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Varonne ou Varone, appelée en allemand Varen, est une commune suisse du canton du Valais, située dans le district de Loèche.

Histoire
Des fouilles archéologiques témoignent de la colonisation de Varonne dès l'âge du bronze (VIIIe siècle avant J.C.).

L'endroit est mentionné pour la première fois en 1241 dans un certificat de vente d'un vignoble. En 1543, les statuts municipaux ont été rédigés.

Au spirituel, d'abord rattachée à Loèche, Varonne est érigée en paroisse en 1783. À l'occasion de la bataille de Finges en 1799, de nombreux soldats de l'armée napoléonienne ont été jetés dans les gorges de la Dala. Pour se venger de cela, l'église Notre-Dame-des-Sept-Douleurs a été incendiée. Elle est reconstruite dès 1800-1804.

En 1990, la nouvelle route pour relier Varonne à Loèche est ouverte avec un nouveau pont sur la Dala.

Démographie

Langues
La commune est bilingue, avec une population majoritairement germanophone et une minorité francophone.

Lieux et monuments
 L'église Notre-Dame-des-Sept-Douleurs
L'église est construite lors de la création de la paroisse en 1783. Elle est presque entièrement détruite lors de la bataille de Finges en 1799. Elle est alors reconstruite entre 1800 et 1804, puis agrandi de deux galeries en 1870.

Les deux tremblements de terre de 1946 et 1960 ont causé de tels dommages que l'église a dû être reconstruite en 1967-1969.

L'église qui nous est parvenu aujourd'hui est construite selon les plans de l'architecte Walter Feliser. L'ancienne tour a été conservée et est maintenant entourée d'une salle hexagonale. Les fenêtres de l'église ont été conçues par Anton Mutter.

 Pont sur la Dala
Pont construit sur les gorges de la Dala entre 1986 et 1990 pour relier Varonne à Loèche

Viticulture
Environ 1 million de litres de vin sont produits chaque année sur une superficie de 132 hectares à Varonne. En plus des cépages typiques du Valais tels que le Cornalin, le Chasselas, le Sylvaner et des cépages autochtones tels l'Arvine, l'Humagne rouge et l'Humagne blanche, on trouve des spécialités telles que le Gwäss (Gouais) et le Plantscher. Le village compte dix domaines viticoles qui sont gérés exclusivement comme des entreprises familiales.

Personnalités
 Brigitte Albrecht Loretan (née en 1970 à Lax), ancienne skieuse de fond qui habite Varonne.
 Didier Plaschy (né en 1973 à Varonne), ancien skieur alpin.

Galerie d'images

Références

Liens externes

Commune du canton du Valais
Commune située au bord du Rhône

redpajama_set_name: RedPajamaWikipedia


← Gilets Jaunes Act 10, it has started.
The Vitriolic Anti-American crowd is already a slight majority in the landscape of the United States of America.
These are the times when those who call our form of Government a Democracy, and demand Democracy, must be stopped. They call for the abolishment of the Electoral College, to gain control of the now minority of those who are still Americans at heart.
The are dangerous times. Will Americans go in silence? I think not.
We are today in a Cold Civil War, and it may sooner than we can imagine turn into a Hot Civil War. The coming Civil War will spill the most blood even any war has in history.
The Nation is without a doubt divided. Enemies are within, and their goal and wish is Global Governance. Be not deceived. What they think will be a utopian peaceful World will be total Dictatorship and Tyranny. Do not let your children live in such World.
Globalism MUST be stopped or postponed. Why do I say postponed? It is Biblical. It is written in Revelations, the Anti-Christ will rule the World for a short time.
NOT in our life time! Give your children a chance at Liberty.
Smart young man, outlines the situation in the US.
Support your President now, or else… Follow your President on Twitter.
It may be beneficial to avoid confrontation, but then Globalism will take over, once the Nation is physically divided.
This entry was posted in Conspiracy, Curent Events, Geopolitics, Government and tagged Civil War, Conspiracy, Geopolitics, Globalism, Government, scriptures. Bookmark the permalink.


Research shows that lifting weights can actually lead to healthier, happier aging in several important ways. We've got the details!
Adults of all ages need to be more conscious of their alcohol consumption, and because the effects of alcohol can grow more serious with age, we feel a reminder for older adults is in order, too.
A new study from the University of Miami has discovered a correlation between depression and increased risk of stroke.
This month is Brain Injury Awareness Month, and the Brain Injury Association of America hopes to spread awareness of brain injuries, their causes, and prevention.
Do you have questions about cholesterol and "good" vs "bad"? Here are 4 things that you need to know.


With age comes wisdom. For 25-year-old Max Kruse, age brought wisdom in the unorthodox form of repainting his Maserati in camouflage colours during the summer. But unorthodox is an accurate summation of both Kruse's rise to prominence and subsequently to the German national team in the last few months.
So Kruse is something of a late bloomer in footballing terms, especially given that his international debut only came in June this year. He received that call up from Joachim Löw, to what was more of a Germany "B" squad, after a breakthrough year in the Bundesliga with Freiburg.
Before that, Kruse's career had failed to ignite. Germany as a whole may be lauded for its attitude towards younger players but as with any stereotype, there are flaws to this one. At Werder Bremen, Max Kruse was not given much of a chance by Thomas Schaaf at Bundesliga level despite scoring 19 goals in 39 appearances for the Werder Bremen Under 19 team.
He played in one Bundesliga game back in September 2007 as a substitute in Werder's 8-1 win over Arminia Bielefeld – even managing an assist within five minutes of coming onto the pitch. Yet as BILD reported last month, Schaaf was concerned about Kruse's attitude. While the two didn't fall out with each other, the now former Werder coach was concerned at the time with the pomp and swagger of Kruse, along with his penchant for fast cars.
He may have made the bench five more times that season but the rest of Kruse's time on the pitch came in the Regionalliga Nord with Werder's second team. Nearly a year on from his Bundesliga debut, he fractured his tibia ruling him out for six months. Kruse was finding out then how things can change in such a short space of time, though luckily for him, he'd find that out to better effect a few years later.
He did make a comeback for Werder's second team later on that season but at the end of the campaign, second tier St Pauli picked him up on a free transfer. At this juncture, Kruse was viewed as more of a midfielder, an adaptable attacking one at that as he moved to either side of midfield or as an attacking midfielder when required.
However, Kruse's fitness after fracturing his tibia the previous year wasn't quite there with him only completing two of 17 league starts for St Pauli that season. Overall though he still played 29 games, bagging seven goals and four assists as St Pauli were promoted to the Bundesliga.
Finally, Kruse's chance to shine properly in the Bundesliga had arrived, right? Well, not quite. He took part in all but one game of the campaign yet his season personally, much like St Pauli's, all but fizzled out after their historic derby win at Hamburg as the club were relegated.
Two goals and six assists was a decent return but no more than that. He was keen for a move to the Bundesliga but none came, so he signed a new three year deal with St Pauli. On the pitch, the fitness issue still seemed to be niggling away at Kruse. Whilst accepting, of course, that fitness is not the reason behind every substitution, Kruse did finish 21 of the 27 games he started in the Bundesliga that season – a marked improvement on the two in 17 from the previous campaign but Kruse wanted more.
He admitted only last month to the Frankfurter Allgemeine how his professionalism has improved and the summer of 2011 in particular proved this. In the holidays, he spent a week and €2100 to be with personal fitness trainer Pedro Gonzalez in Mallorca, preparing for the season ahead.
As the Hamburger Morgen Post put it at the time, Kruse was motivated like never before. Not only did he start every one of St Pauli's league games in the season that followed but he also had eight goals and four assists after just 12 matchdays. That goal tally only went up to 13 by the end of the campaign but by then, he had done enough to earn himself another shot at the Bundesliga as Freiburg paid half a million euros for him in May 2012.
He was joining the club at a good time too, given Freiburg's rise from the foot of the Bundesliga at the start of the year to the relative comforts of mid-table, thanks to the work of new coach Christian Streich. "In Max Kruse we've signed a midfielder capable of posing a real threat in front of goal," said Freiburg's Sporting Director Dirk Dufner at the time.
Under Christian Streich though, Kruse would evolve from a midfielder into a striker. As in the previous summer, Kruse spent time before pre-season training began with Gonzalez in Mallorca. It again had the desired effect with Kruse being the only outfield player to play in every game of what would be an outstanding Bundesliga campaign for Freiburg but this time around it was the positional change that had the greatest effect on Kruse's fortunes.
He scored on both his full debut for Freiburg in the DFB-Pokal and his Bundesliga debut for the club in an opening day draw against Mainz. With 11 goals and eight assists, Kruse was the club's top scorer and one of Freiburg's star players in their run to fifth spot in the Bundesliga. To call him the star player would do a disservice to the way in which Freiburg have worked under Christian Streich but his all round contribution to the team was superb.
As Kruse himself put it, after many seasons where he'd had a good half of a season, this campaign with Freiburg was the first time he was able to be consistent for a complete season. It wasn't his greatest goal and assist tally in his career either but accumulating the 11 goals and eight assists at the top-level of German football counted for more – something which was recognised with Kruse being named the Bundesliga's best new player too. That, along with the fact that he'd been such a crucial part of Freiburg's run to a Europa League place was enough to convince Borussia Mönchengladbach to pay the buyout fee for Kruse.
It could have been a return to Werder Bremen, had Thomas Schaaf wanted to re-sign him, but he was wary given his past experience of Kruse, so in stepped Gladbach who paid a fee of €2.5 million for his signature. That sum was five times what Freiburg had paid for him but a price that looked a bargain given the way Kruse had played over the course of the season. Before he could join up with the Foals though, he had a dream to fulfil.
The squad that Jogi Löw took to the USA in the summer was not a full strength one but it was nevertheless the chance for Kruse to make his debut for Die Nationalmannschaft and he made quite an impression. In the first game of the tour, he laid on Lukas Podolski's third against Ecuador and against the United States, he came off the bench at half time to set up Heiko Westermann for Germany's first of the game before scoring their second. Germany lost the game 4-3 but Kruse had won quite a few admirers on the trip, the most important one being Joachim Löw.
He didn't receive a call up to the next squad in August but by then, the 25-year-old was already hitting it off with his new club Borussia Mönchengladbach. Having had little success up front with €12 million record signing Luuk De Jong last season, Lucien Favre opted to start the campaign with Kruse alongside another summer signing, Raffael, in attack.
It's been a pairing that Favre has subsequently played in every Bundesliga game so far this season with Raffael scoring five and setting up four for Gladbach. The star of the partnership though, and indeed of the Foals season so far has been Kruse. After just 12 games this season, his integration into the side has been seamless, scoring seven and setting up six. That puts Kruse high up in both the Bundesliga's scoring and assist charts.
Only Robert Lewandowski has provided a better accumulative total of goals and assists (14) than Max Kruse so far this season. It's little wonder that since September, Kruse has made it into every one of Joachim Löw's Germany squads. Had Miroslav Klose and Mario Gomez not been injured, Kruse's selection may not have been as likely. Still, it should be appreciated given that Kruse is likely to make an appearance for Germany on Tuesday night at Wembley, even if it is from the bench, how far he has come over a relatively short space of time. But, then again, as a man with a camouflage Maserati, Kruse himself no doubt appreciates his own acceleration.


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Community comes together at St. Augustine High's annual Innings for Cancer softball game
St. Augustine Record
ST. AUGUSTINE — St. Augustine High's softball team ditches its trademark colors, maroon and gold, for the orange and blue of the Florida Gators on one night each spring.
It's a tradition that started more than a decade ago, an homage to late head coach Kenneth "B.G." Gaster, who succumbed to pancreatic cancer in July 2009 — 15 months after guiding the Yellow Jackets to just their second Florida High School Athletic Association playoff appearance. The Pittsburgh native, longtime Jacksonville resident and lifelong Gators football fan died at age 56.
Heart of (maroon and) gold:St. Augustine softball team rallies around Esguerra after heart problems
Raising funds:Annual Shut Up and Run 5K draws more than 270 runners on Thanksgiving Day
To honor his memory, the Innings for Cancer game was born the following softball season. Nease served as the Jackets' opponent for the first six iterations, but crosstown rival Menendez has participated in the contest each year since 2016.
Turnout is always high, and competition is fierce on the diamond. But it's also a night for athletes, parents and coaches alike to reflect on things far greater than the sport itself.
"It's competitive, but it's a different moment," said Erica Willis, Menendez's junior varsity head coach and a former assistant at St. Augustine.
"You have players who, just in the last month, have lost loved ones to cancer. That's a little rawer. You have people who are playing for parents who are survivors. … It's one of those nights — St. Augustine, Pedro, it doesn't matter, I've been on both sides of it — when this is a game you want to come play and circle on your calendar."
Innings for Cancer also serves as a significant fundraising effort for St. Johns County charities. Last year, the two schools split $5,000 between two separate organizations — Pink Up the Pace and Unity Outreach, Yellow Jackets head coach Bob Esguerra said.
Esguerra estimates that more than $40,000 has been raised over 13 years, although the 2020 game was canceled due to the COVID-19 pandemic.
"It's about giving back," Esguerra said. "This is bigger than us. We're helping families battling cancer.
"It's a great game. We're giving people their money's worth, but the great cause is to give these organizations that help to fight cancer every single day a little financial relief. When we present them with a check, and they cry, it means a lot — not only to our program, but to Menendez's program."
Jeff Gatlin, the Falcons' coach, said as much prior to first pitch. He worked as an assistant on Gaster's staff at St. Augustine, describing him as intense but as someone who loved his players and treated them equally.
"One of the first things I learned from him was even though I was coaching girls' softball to do so just like I was coaching baseball or football or anything else," Gatlin said.
"He would chew someone out and then 3 seconds later have his hand around them saying, 'You know why I did that.' And (the player) would say, 'Yes sir.'"
Fundraising efforts on Innings for Cancer night include a silent auction for various packages, barbecue dinner sales and inning sponsorships. Local businesses chip in, and the evening's officiating crew donated its game checks, Esguerra said.
All 350 dinner plates — marked $10 apiece — sold out by night's end. Menendez won the game, 9-6.
End of the 'Esguerra era'
Esguerra will retire at the conclusion of the 2022 season, a decision prompted by a desire to spend more time with his family and due in part to ongoing heart-related issues. The 58-year-old has coached more than 1,600 football, basketball and softball games in Northeast Florida.
Though the "Esguerra era" will come to an end, the Innings for Cancer game will continue — perhaps with some changes on the horizon. Gatlin would like to have the game played at a neutral site, with Flagler College a logical location.
"People in this community want to make a difference. They want to do things, and just need the opportunity," Gatlin said. "This is a collaboration of the community. You hear the sponsors; they're from all over town — sponsors that have Pedro kids, sponsors that have St. Augustine kids, sponsors that have Ponte Vedra kids and have nothing to do with us. This community just loves on its own, and they want to be a part of this."

redpajama_set_name: RedPajamaCommonCrawl


Athens World: "Clear and present danger"
The grand jury has spoken. Now the judges have spoken. (See "Judges plead with county for bigger jail" in today's Athens Banner-Herald.) "[T]he jail is a clear and present danger to our community," stated the grand jury in July 2006. "The conditions are, in my opinion, horrific," Judge Lawrence was quoted as saying in the ABH today.
Athenians, when are we going to correct this situation? The news reports that the ACC Mayor and Commission will finally be forming a task force. Let's support their efforts.
Piggly Wiggly on North Avenue Anti-Environment?


MENLO PARK, Calif. - The Fordham University Enrollment Group selected Nuance and its partner Speech Technology Associates, Inc. (STA) to develop the speech recognition and CTI-enabled auto-attendant solution, Automated Operator™.
Automated Operator™ for Education provides one number access to people, information and services, including frequently asked questions (FAQs). Complex inquiries are transferred to Fordham University Enrollment Services, accompanied by student data via computer telephony integration. Enrollment representatives can then automatically access screen-popped records and information when speaking with a caller.
Comprising the voice automation core of Fordham University's Automated Operator™ implementation is Nuance Voice Platform™ 3.0, a VoiceXML platform optimized for the deployment and operation of voice automation solutions. Nuance Voice Platform provides access to Nuance's speech recognition, voice authentication, and text-to-speech software.
"Fordham University Enrollment Services is committed to providing quick, complete, and courteous service to students, parents, faculty, and staff," said Gene Fein, senior associate director of technology. "Automated Operator™ for Education eliminates the frustration of phone trees, while providing immediate response to simple questions, thus freeing staff to respond to inquiries that are more complex. Fordham is pleased to be one of the first universities in the nation to integrate telephony, speech recognition, and the Web to serve the community. Fordham and STA share a commitment to superior service that has fostered an excellent working relationship between our organizations."


This pamphlet provides an overviewof the information that appears on your bill each month. So you will know exactly what you are paying for and what to expect. We will explain things that may differ from your regular monthly rate, like one-time charges and prorates if you add services to your account.
You'll find quickly the information you are looking for. Whether it's an overview of your account or all the details, we've got you covered!
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Last week AMC released the first two Zombie photos from Walking Dead, today we get the first shot Rick Grimes walking. Yeah, it's a boring shot, but it's what the series is, him walking from place to place battling Zombies.
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Home Economy Come Back, Ross Perot!
Come Back, Ross Perot!
In 2008, the mother of one of my best friends died. I flew to Dallas, Texas, to attend the funeral, and found my way to the chapel at the funeral home. After I sat down, an older gentleman and a middle-aged woman sat behind me. Soon after that, a woman came out to sing a hymn. When she finished, the man behind me said, "That was real nice. She's got a real nice voice. But the music was too loud! I couldn't hear her that good."
The voice was unmistakable. It belonged to H. Ross Perot.
My friend's brother-in-law worked for Perot for decades. In fact, the brother-in-law made all the flip charts that became part of the great Texan's lore. I listened to Perot's occasional commentary through the funeral, and then afterwards watched him drive himself away… in a Ford Crown Victoria.
He always drove a General Motors car, until the debacle of selling his company to GM, then buying it back. Then he swore he'd never drive another GM.
I'd love to see a person like Perot on the political scene today. He was quirky, but you didn't have to guess where he stood. Fiscal discipline, good jobs, personal responsibility. But don't call him a conservative… or a liberal.
He hated NAFTA, calling it a job-sucking program that would move industry south of the border. Clearly that happened, but on the flip side, Americans enjoyed much cheaper goods. Is it worth it? That argument is as old as Adam Smith's Wealth of Nations, and still hasn't been answered. If I'm buying a car made in Mexico, I'm glad it cost 25% less than it would if it had been made in the U.S. If I worked for Whirlpool, I'm not happy to see my good-paying job leave the country.
Perot was reluctantly pro-choice. He called for Medicare for All. He wanted to greatly expand education, lengthening the school year from 180 days to 210, and absolutely disallowing any student from playing any sport if they didn't have passing grades. Remember, he was living in Dallas, Texas… sort of the high school football epicenter of the universe. These were fighting words!
He wanted merit pay for teachers and term limits for Congress based on performance. Perot called for ending government pork and reducing staff.
Of course, he also wanted to ban the Electoral College, put disadvantaged kids in government-funded homes, and institute a $0.50 per gallon tax to pay off the federal deficit. Not every idea he had was a winner, and not every strategy would work. He famously said that we could wait out China because their leaders were very old, implying that the nation would turn more democratic as the leadership passed.
But the man was so genuine as to be magnetic!
After two of his executives were falsely accused of bribery in Iran just before the revolution, Perot put together a strike team to break them out of the prison. It worked, and author Ken Follett wrote a best-selling book about it that was made into a film, On Eagle's Wings. Perot also told employees that, at his company, adultery was grounds for immediate dismissal.
Now, as in 1992, I can't imagine a Ross Perot character winning a presidential election. They would be too realistic in their projections, calling for the nation to make sacrifices to achieve what we claim are our goals – reducing debt, caring for the needy, providing basic health services for all, and improving education.
But if we could get more Perots, both men and women, to make their voices heard… perhaps we can at least bend the political curve that seems to point our deficits to the sky without commensurate progress.
At least we might get Congressional term limits.
As we say goodbye to Ross Perot – the short, successful man with big ideas – I'll leave you with a few of his best quotes:
The activist is not the man who says the river is dirty. The activist is the man who cleans up the river.
Which one of these three candidates would you want your daughter to marry?
When you see a snake, kill the snake. Don't appoint a committee on snakes.
Here's to hoping that the political leaders of tomorrow channel their inner Ross Perot and kill a lot more snakes, rather than simply appointing more committees.
But I'm not holding my breath.
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Fujun Wang
The Effect of Surface Geometry of Solid Wall On the Collapse of a Cavitation Bubble
Yurong Sun, Yuxin Du, Zhifeng Yao, Qiang Zhong, Siyuan Geng, Fujun Wang
Journal: Journal of Fluids Engineering
J. Fluids Eng.
Paper No: FE-21-1389
The objective of this paper is to reveal the influence of different surface geometric conditions on the dynamic behavior characteristics of a laser-induced bubble collapse. A high-speed camera system was used to record the oscillation process of the laser-induced bubble on plane solid walls with different roughness and a wall containing reentrant cavities full of water or gas. The focus is on the quantitative analysis of the morphological characteristics of the cavitation bubble near the solid wall under different surface forms during the first two oscillation period. The results show that the dimensionless ratio γ, defined as the distance from the center of the bubble to the wall divided by the maximum radius of the bubble, has a great influence on the change of the cavitation shape in the direction of the vertical wall. Different surface geometries without gas in our cases have no significant effect on the collapse time of cavitation bubbles. While for the surface containing gas, the direction of movement of the bubble accompanying the micro-jet will greatly change during the collapse of the cavitation bubble, and the collapse time seems to be independent of the dimensionless ratio γ. These achievements shed the light for the engineering to avoid the damage of the micro-jet caused by design suitable surface geometry.
Topics: Bubbles, Cavitation, Collapse, Geometry, Lasers, Oscillations, Cavities, Damage, Design, Shapes
Fluid–Structure Interaction Effects of a Partially Immersed, Cantilevered Hydrofoil
Yongshun Zeng, Xin Qi, Lingfeng Shu, Zhifeng Yao, Lingjiu Zhou, Fujun Wang
J. Fluids Eng. February 2022, 144(2): 021202.
Knowledge of the modal parameters of the guide vane is essential for evaluating the operating stability of pump-turbines. In the present investigation, experiments and simulations are designed to analyze the influence of submergence level and sidewall clearance on the vibration characteristics of a guide vane-like structure. The results show that the type of mode shape remains unchanged at different submergence levels, while the position of the node line (NL) demonstrates a slight shift. According to the angle of the NL and the free surface, the mode types are divided into parallel NL, vertical NL, and slanted NL modes. The added mass tends to increase with increasing submergence levels, while the slope of added mass in conjunction with the submergence level, is dependent on the mode type. In particular, in relation to the parallel NL mode, the slope is almost zero, if the free surface is close to the NL region; with regard to the slanted NL mode, the slope in the NL region is significantly smaller than that outside this region; in the case of the vertical NL mode, the slope remains approximately constant. The damping ratio increases with increasing submergence level for the vertical NL mode. While the damping ratios for the parallel and slanted NL modes are decreased if the free surface is close to the NL regions. In addition, as the side wall clearance increases, both the added mass and damping ratio tend to decrease.
Topics: Clearances (Engineering), Damping, Hydrofoil, Mode shapes, Vibration, Simulation, Water
Early Dynamics of a Laser-Induced Underwater Shock Wave
Guihua Lai, Siyuan Geng, Hanwen Zheng, Zhifeng Yao, Qiang Zhong, Fujun Wang
J. Fluids Eng. January 2022, 144(1): 011501.
The objective of this paper is to observe and investigate the early evolution of the shock wave, induced by a nanosecond pulsed laser in still water. A numerical method is performed to calculate the propagation of the shock wave within 1 μ s, after optical breakdown, based on the Gilmore model and the Kirkwood–Bethe hypothesis. The input parameters of the numerical method include the laser pulse duration, the size of the plasma, and the maximally extended cavitation bubble, which are measured utilizing a high time-resolved shadowgraph system. The calculation results are verified by shock wave observation experiments at the cavitation bubble expansion stage. The relative errors of the radiuses and the velocity of the shock wave front reach the maximum value of 45% at 5 ns after breakdown and decrease to less than 20% within 20 ns. The high attenuation characteristics of the shock wave after the optical breakdown are predicted by the numerical method. The quick time and space evolution of the shock wave are carefully analyzed. The normalized shock wave width is found to be independent of the laser energy and duration, and the energy partition ratio is around 2.0 using the nanosecond pulsed laser.
Topics: Bubbles, Lasers, Shock waves, Pressure, Dynamics (Mechanics)
Propagation of Shock Wave at the Cavitation Bubble Expansion Stage Induced by a Nanosecond Laser Pulse
Siyuan Geng, Zhifeng Yao, Qiang Zhong, Yuxin Du, Ruofu Xiao, Fujun Wang
J. Fluids Eng. May 2021, 143(5): 051209.
Published Online: March 4, 2021
The objective of this paper is to reveal the attenuation characteristics of a shock wave after optical breakdown in water, with laser pulses of 12-ns duration. A high time-resolved shadowgraph method is applied to capture the temporal evolutions of the cavitation bubble wall and shock wave. The experiments are carried out on a single bubble generated far away from the free surface and the rigid walls with laser pulse energies of 22 mJ, 45 mJ, and 60 mJ. The results show that a high, time-resolved, wave front velocity of the shock wave is identified, and the maximum velocity can reach up to around 4000 m/s. An asymmetric shock wave is observed at the very start of the bubble expansion stage, and the process of the sharp attenuation of wave front velocity down to sound velocity is accomplished within 310 ns. The possible relationship of the cavitation bubble and the shock wave is discussed and a prediction model, using the maximum bubble radius and the corresponding time calculated by the Gilmore model, is proposed to calculate the location of the wave front.
Topics: Bubbles, Lasers, Shock waves, Cavitation
On the Vortical Characteristics of Horn-Like Vortices in Stator Corner Separation Flow in an Axial Flow Pump
Chaoyue Wang, Fujun Wang, Lihua Xie, Benhong Wang, Zhifeng Yao, Ruofu Xiao
J. Fluids Eng. June 2021, 143(6): 061201.
Published Online: February 19, 2021
The phenomenon of horn-like vortex in stator corner separation flow in an axial flow pump was first reported by Wang et al. (2020, "Investigation on the Horn-Like Vortices in Stator Corner Separation Flow in an Axial Flow Pump," ASME J. Fluids Eng., 142(7), p. 071208), and the associated external features were preliminarily presented. However, internal vortical characteristics of horn-like vortices, including the distributions of swirling strength, the deformation mechanism of vortex tube and the correlation with pressure fluctuation surge, are not revealed. In this paper, the newly developed vorticity decomposition approach is introduced, and thus more novel quantitative results are provided for the physics of horn-like vortex evolution in an axial flow pump. First, the distributions of absolute swirling strength, relative swirling strength and Liutex spectrum are presented to outline the vortical features of the horn-like vortex fields. Second, the deformation mechanism of the horn-like vortex tube is revealed. It is found that the horn-like vortex spatial evolution can be described by the deformation terms (Liutex stretching term, Liutex dilatation term, and curl term of the pseudo-Lamb vector) controlling the Liutex transport process. These terms constantly act on the horn-like vortex tube in an almost independent way, causing its continuous deformations in the transit process. Third, the quantitative correlation between horn-like vortex transit and pressure fluctuation surge is given. It is proved that periodic vortex transit can cause severe pressure fluctuation that is much larger than that induced by rotor–stator interaction. From multiple perspectives, a clearer evolution process of the horn-like vortex is outlined, which is conducive to controlling the corner separation flows and improving the stability of large-capacity and low-head pumping stations.
Topics: Corners (Structural elements), Flow (Dynamics), Separation (Technology), Stators, Vortices, Vorticity, Pumps, Axial flow, Deformation, Pressure
Influence of Tip Clearance on the Hydrodynamic Damping Characteristics of a Hydrofoil
Yongshun Zeng, Zhifeng Yao, Shijie Zhang, Fujun Wang, Ruofu Xiao
Tip clearance in hydraulic machines may complicate the fluid–structure interaction (FSI) effects. In this investigation, a mode-based approach (modal work) is evaluated and employed to quantitatively predict the added mass, added stiffness, and hydrodynamic damping ratio, in relation to the first-order bending mode of a vibrating hydrofoil. The investigated relative tip clearance ranges from 0.067% to 2% of the span length. The predicted vortex shedding frequency, natural frequency, and hydrodynamic damping ratio of the hydrofoil are in good agreement with the previously published experimental results, with relative deviations within 9.92%, 6.97%, and 11.23%, respectively. Simulation results show that the added mass, added stiffness, and hydrodynamic damping ratio increase inversely as the tip clearance increases. In particular, as the relative tip clearance increases from 0.067% to 2%, the added mass in still water, the added stiffness, and hydrodynamic damping ratio at a velocity of 10 m/s decrease by 18.66%, 9.36%, and 27.99%, respectively. As the tip clearance increases, the inversely increased pressure difference between the upper and lower surfaces of the vibrating hydrofoil is the main reason for the inversely increased hydrodynamic damping ratio. This is due to the energy leakages via the tip clearance region increase as the tip clearance increases, which may cause less fluid force to resist the vibration of the hydrofoil, resulting in less negative modal work done by the fluid load on the hydrofoil.
Topics: Clearances (Engineering), Damping, Hydrofoil, Stiffness, Fluids, Water, Computational fluid dynamics
A Preliminary Study on the Simulation of Vortex Flow in Pump Intake Based on LBM-VOF-LES Combined Model
Miao Guo, Xuelin Tang, Xiaoqin Li, Fujun Wang, Xiaoyan Shi
Published Online: February 8, 2021
In this paper, the lattice Boltzmann method-large eddy simulation (LBM-LES) model was combined with the volume of fluid (VOF) method and used to simulate vortex flow in a typical pump intake. The strain rate tensor in the LES model is locally calculated utilizing nonequilibrium moments based on Chapman–Enskog expansion, and the bounce-back scheme is used for nonslip condition on the solid wall and VOF method for the free surface. The evolution of all kinds of cells on the free surface is based on the mass exchange in the VOF method, i.e., lattice Boltzmann-single phase (LB-SP) free surface model. The introduction of the external force terms is established through adding corresponding expressions on the right of the lattice Boltzmann equation (LBE), and by modifying the velocity. The predicted vortex flow patterns (core location and strength of the vortex) and velocity correlate with the experiments undertaken with the physical model. A comparison of the results demonstrates the feasibility and stability of the model and the numerical method in predicting vortex flows inside pump intakes. The model developed and presented in this paper provides a new analysis method of vortex flow patterns in pump intake from a mesoscopic perspective, enriches the relevant technologies, and makes corresponding contributions to further engineering applications .
Topics: Flow (Dynamics), Fluids, Lattice Boltzmann methods, Pumps, Simulation, Vortex flow, Vortices, Vorticity, Eddies (Fluid dynamics), Pipes
Proceedings Papers
A Product Data Model and Processor Supporting Virtual Product Development
Fujun Wang, John J. Mills
Proc. ASME. IDETC-CIE2000, Volume 1: 20th Computers and Information in Engineering Conference, 267-275, September 10–13, 2000
Paper No: DETC2000/CIE-14618
DOI: https://doi.org/10.1115/DETC2000/CIE-14618
To assemble multiple product components into a product in virtual product development mode, it is necessary to integrate heterogeneous product data models from different CAD applications. This paper proposes a Collaboration-oriented Product Representation Model (CPRM) which is made up of Embodiment Data , Functional Data , Management Data and Reusable Data . The CPRM is a neutral, customizable, understandable and reusable model with self-management capability. The Product Model Processor (PMP) helps a user to wrap a specific CAD model into the CPRM or helps to define the complex model data step by step. The PMP is made up of six modules, a Model Broker , a Neutral Model Definer & Browser , a Model Customizer , a Semantic Encapsulator , a Service Enabler and a Model Manager . The CPRM and PMP are described in this paper.
View Paper
Topics: Product development
Analyses of Turbulent Characteristics of the Air-Core Vortex Formation
Dan Zi, Fujun Wang
Proc. ASME. FEDSM2020, Volume 1: Fluid Applications and Systems; Fluid Measurement and Instrumentation, V001T01A029, July 13–15, 2020
Paper No: FEDSM2020-20224
DOI: https://doi.org/10.1115/FEDSM2020-20224
Air-core vortex often appears at the hydraulic intakes, it not only degrades hydraulic performance but also causes vibrations of the pump or turbine, resulting in efficiency reduction and operation instability. In this paper, large eddy simulation using an in-house code with the coupled level-set and volume-of-fluid method for capturing the air-water interface is performed. Vortices motions and turbulent characteristics are investigated. The fully-developed air-core vortex is well reproduced in the simulation. The distribution of the turbulent kinetic energy of the flow field is relevant to the evolution of vortices during the air-core vortex formation. At the early stage of the air-core vortex formation, the turbulent kinetic energy is high near the intake and the two side of the intake along the streamwise direction, and the streamwise component of the Reynolds normal stress is dominant, which indicates that vortices on the two sides move towards the intake along the streamwise direction and gather near intake. The turbulent kinetic energy increases rapidly as it approaches to the intake, and it has two peaks near the intake with the development of the flow field, which indicates that the gathered vortices evolve into two strong vortices. The turbulent kinetic energy only has one peak at the late stage, which indicates that there only exists one dominant vortex, and air is entrained in the intake, forming a fully-connected air-core vortex.
Topics: Turbulence, Vortices, Kinetic energy, Flow (Dynamics), Fluids, Large eddy simulation, Pumps, Simulation, Stress, Turbines
Investigation on the Horn-Like Vortices in Stator Corner Separation Flow in an Axial Flow Pump
Chaoyue Wang, Fujun Wang, Yuan Tang, Benhong Wang, Zhifeng Yao, Ruofu Xiao
J. Fluids Eng. July 2020, 142(7): 071208.
Published Online: March 27, 2020
Stator corner separation flow existing in the guide-vane domain has significant effects on the characteristics of an axial-flow pump. The objective of this paper is to investigate the vortical structures in stator corner separation flow. Transient numerical simulation with a proof experiment was conducted for an axial-flow pump. Structural features of the vortices and their effects on velocity moment attenuation and pressure fluctuations in the guide-vane domain were analyzed. Horn-like vortices are found in the stator corner separation flow. A full cycle of the horn-like vortex evolution, "inception-growth-development-decay," is presented. During this transit process, the vortex tube is gradually elongated and deformed, which forms an oblique separation line on the vane suction surface. High velocity moment always exists in the flow passages of the guide-vane domain, and the uniformity of main flows is gradually reduced. Meanwhile, periodic pressure fluctuations arise. The maximum amplitude of pressure fluctuations in the flow passages occurs in the region where the horn-like vortex cores at the "growth" stage lie in, which is approximately 3.39 times higher than that in the vaneless region between the impeller and guide-vane. The dominant frequency of pressure fluctuations in the flow passages is approximately 0.75 times the rotating frequency, which is close to the frequency of the full cycle of the horn-like vortex evolution. Horn-like vortices have remarkable effects on the flow fields, and more attention should be paid to them.
Topics: Axial flow, Corners (Structural elements), Flow (Dynamics), Guide vanes, Pressure, Pumps, Separation (Technology), Vortices, Stators, Computer simulation
Experimental Investigation on Pressure Fluctuation Reduction in a Double Suction Centrifugal Pump: Influence of Impeller Stagger and Blade Geometry
Yongshun Zeng, Zhifeng Yao, Fujun Wang, Ruofu Xiao, Chenglian He
J. Fluids Eng. April 2020, 142(4): 041202.
The reduction in pressure fluctuation can suppress noise, balance the radial and axial forces, and restrain the vibration level of a centrifugal pump. Impeller stagger and blade geometry influence the pressure fluctuation characteristics of double suction centrifugal pumps. In the present investigation, the pressure fluctuation characteristics of the baseline impeller, the staggered impeller, and the blade geometry modified impeller were investigated experimentally under design and off-design operating conditions. The frequency spectrum was analyzed by fast Fourier transform (FFT) and continuous wavelet transform (CWT) methods. The broadband frequencies are defined quantitatively and analyzed emphatically. The significant linear relationship between the center frequency of the broadband frequencies and the flowrate is discovered for the first time. The center frequency decreases as the flowrate increases. The linearity varies below and above the design flowrate. When the discrete frequencies are in range of the broadband frequencies, a high amplitude of pressure fluctuation occurs. This could explain the large peak-to-peak value of the pressure fluctuation at 1.24Q n , which may be due to the coincidence between broadband frequencies and the components at the frequencies f r and 2f r . Both the staggered impeller and the blade geometry modified impeller can reduce the level of pressure fluctuation; in particular, it is reduced to 35% and 13% compared to that of baseline impeller near the volute tongue region under the design flowrate, respectively. The staggered impeller and the blade geometry can obviously affect the decreasing slopes between the center frequencies and the flowrate.
Topics: Blades, Impellers, Pressure, Suction, Geometry, Centrifugal pumps, Design, Fluctuations (Physics)
Investigation Into the Phenomenon of Flow Deviation in the S-Shaped Discharge Passage of a Slanted Axial-Flow Pumping System
Chaoyue Wang, Fujun Wang, Yuan Tang, Dan Zi, Lihua Xie, Chenglian He, Quanrong Zhu, Congbing Huang
A remarkable flow deviation phenomenon exists in the S-shaped discharge passage of a slanted axial-flow pumping system. In order to reveal the characteristics and development process of the deviating flow, numerical simulation was performed for a 15 deg slanted axial-flow pumping system, and the deviating flow was measured on an experimental rig. The details of the deviating flow in the S-shaped discharge passage were obtained. A kind of "unwinding" flow structure similar to that of DNA in biology is found in the S-shaped passage. The special structure is characterized by a "single strand" in which original helical streamlines are almost straightened. The bulk speed of the fluids on the "single strand" on the left side of the passage significantly increases while the swirling strength and the kinetic pressure ratio decrease. Large-scale Dean vortices at the passage bottom interact with high transverse energy gradient fluids at the passage top as water flows into the convex part of the S-shaped passage, which leads to the emergence of the "unwinding" structure. Reverse secondary flows further enlarge the scale of the Dean vortices as water flows into the concave part of the S-shaped passage, which results in the growth of the "unwinding" structure. With the development of the asymmetrical flow structure, an irreversible severe flow deviation problem naturally comes into being.
Topics: Axial flow, Flow (Dynamics), Pressure
Numerical Investigation of Pressure Pulsation in Vaneless Region of a High Speed Centrifugal Pump
Yongshun Zeng, Min Yang, Yuqing Zhai, Zhifeng Yao, Fujun Wang, Ruofu Xiao
Proc. ASME. AJKFluids2019, Volume 2: Computational Fluid Dynamics, V002T02A015, July 28–August 1, 2019
Paper No: AJKFluids2019-4912
DOI: https://doi.org/10.1115/AJKFluids2019-4912
The pressure pulsation due to rotor-stator interaction (RSI) is unavoidable for high-speed centrifugal pump when operating under different conditions. The frequency components of pressure pulsation in the vaneless region are the most complex, and the pressure pulsation characteristic plays an important role in pump structural stress analysis. A numerical simulation method is used to obtain the hydraulic performances of a high-speed centrifugal pump with 9857 r/min at the range of flow rates between 48.1 to 155.0 m 3 /h. The head and efficiency under different operating conditions have good agreement with experimental results, with maximum deviations in 3.82% and 5.37%, respectively. The results show that the level of the pressure pulsation from the inlet to the outlet of the impeller increased gradually, and the pressure pulsations between the short blades are greater than that between the long and short blades. In the diffuser, the pressure pulsation is the highest near the tongue, whereas it is lower in the region between the two tongues, and this region is defined as the vaneless region. The pressure contours in the vaneless region almost have no change, while they near the tongue are densely distributed, revealing the mechanism of uneven pressure pulsation distribution. Moreover, there is a high radial velocity distribution near the tongue in the vaneless region, indicating that there may be a jet-wake pattern occured in this region.
Topics: Centrifugal pumps, Computer simulation, Pressure, Rotors, Stators
Numerical Investigation of Added Mass and Hydrodynamic Damping on a Blunt Trailing Edge Hydrofoil
Yongshun Zeng, Zhifeng Yao, Jiangyong Gao, Yiping Hong, Fujun Wang, Fang Zhang
J. Fluids Eng. August 2019, 141(8): 081108.
Added mass and hydrodynamic damping play significant roles in fluid-structure interaction (FSI) in hydraulic turbines. Added mass can reduce natural frequencies, while hydrodynamic damping could result in a higher amplitude decay speed of the vibration. In order to quantify the added mass and hydrodynamic damping of a three-dimensional (3D) NACA 0009 hydrofoil with a blunt trailing edge, a two-way FSI simulation method was employed. The effects of grid scale, time-step, turbulence model, exciting force, and numerical damping on the calculation accuracy of the two-way FSI numerical simulation were analyzed in great detail through comparison with the previously published experimental data. Hydraulic force was obtained by using a transitional shear stress transport model at the flow region of the Reynolds number Re L = 0.2 × 10 6 –2 × 10 6 . The vortex shedding frequency, the natural frequency of the first-order bending mode in water, and the hydrodynamic damping ratio obtained from the numerical simulations agree well with the experimental data, with maximum deviations in 6.12%, 4.53%, and 8.82%, respectively. As the flow velocity increases, the natural frequency may not significantly change, while the added mass coefficient gradually increases, considering the effect of added stiffness. Above the first-order bending mode lock-in region, the results indicate that the first-order bending mode hydrodynamic damping ratio increases linearly with velocity. The present numerical achievements offer a higher level of accuracy for predicting the added mass and hydrodynamic damping characteristics of a hydrofoil.
Topics: Damping, Flow (Dynamics), Hydrofoil, Vibration, Water, Fluid structure interaction, Computer simulation, Turbulence, Vortex shedding
Comparative Study on Hydraulic Performance of Single-Suction Centrifugal Pump and Double-Suction Centrifugal Pump
Chaoyue Wang, Fujun Wang, Zhichao Zou
Proc. ASME. FEDSM2017, Volume 1A, Symposia: Keynotes; Advances in Numerical Modeling for Turbomachinery Flow Optimization; Fluid Machinery; Industrial and Environmental Applications of Fluid Mechanics; Pumping Machinery, V01AT03A008, July 30–August 3, 2017
In engineering applications, design and manufacture of double-suction impeller are on the basis of single-suction impeller. However, there is a lack of clear view on the differences of hydraulic performance between single-suction centrifugal pump and double-suction centrifugal pump which has the same blades. In this paper, a single-suction centrifugal pump and double-suction centrifugal pump with the same blades are investigated respectively, and their hydraulic performances have been compared in terms of external characteristics, flow pattern, pressure fluctuation and cavitation characteristics. In operating range of 0.6 Q 0 ∼1.1 Q 0 , results show that the efficiency of double-suction pump is 4.14% higher than that of single-suction pump stably, and the head of single suction pump is 3.5% higher than that of double-suction pump stably. Single-suction impeller and double-suction impeller have similar jet-wake structure in impeller outlet, but the amplitude of velocity of single suction impeller changes more sharply. In the vicinity of rated condition, the amplitude of pressure fluctuation of double suction pump is about half that of the single suction pump, and the cavitation performance of double suction pump and single suction pump are basically the same. These quantitative results show that pressure fluctuation characteristics and cavitation performance of single-suction pump and double-suction pump with the same blades have little difference in the vicinity of rated condition. Compared with single-suction pump, the head of double-suction pump has declined, while the efficiency has improved remarkably. The research results have significant guidance on excavating the potential of excellent hydraulic models and guiding the design of double-inlet multistage double-suction centrifugal pump.
Topics: Centrifugal pumps, Suction, Pumps, Impellers, Suction pumps, Blades, Cavitation, Pressure, Design, Engineering systems and industry applications
Numerical and Experimental Investigation on the Radial Force Characteristic of a Large Double Suction Centrifugal Pump in a Real Pumping Station
Zhifeng Yao, Fujun Wang, Zichao Zhang, Ruofu Xiao, Chenglian He
Proc. ASME. AJKFluids2015, Volume 1: Symposia, V001T33A015, July 26–31, 2015
Paper No: AJKFluids2015-33468
DOI: https://doi.org/10.1115/AJKFluids2015-33468
The pump operation stability is one of the most important indicators for large discharge pumping stations. Impeller seal rings wear is a key problematic issue. A large double suction centrifugal pump in a real water supply pumping station is numerically and experimentally investigated, of which the seal rings are seriously wore on a fixed location. The pump shaft throws in two orthorhombic directions are measured at flow rates ranging from 0 to 110% of nominal flow rate, as well as the startup and shut down periods. And careful analysis of radial forces under various steady and unsteady conditions is carried out combining with the experimental results. The results show that the value of the shaft displacement obviously increases as the flow rate decreases, especially on the operating conditions with the flow rates below 87% of the design flow rate for the drive end side. The absolute value of the shaft displacement is 0.37mm, which is more than 3 times as large as that at nominal operating condition. There exit a lasting time of large shaft displacements during pump startup and shutdown periods, and the largest value of shaft displacement at the drive end side happens during the pump startup process, which can be increase to 0.95mm. There exists relative large radial force, and the direction of which is exactly the same with the pump shaft displacement at the flow rate from 0.73 Q n to 0.32 Q n, and also meet the wear locations of the impeller seal rings.
Topics: Centrifugal pumps, Pumping stations, Suction, Flow (Dynamics), Pumps, Displacement, Impellers, Wear, Design, Stability
Effect of Double-Volute Casing on Impeller Radial Force for a Large Double-Suction Centrifugal Pump
Zichao Zhang, Fujun Wang, Zhifeng Yao, Ruofu Xiao
The operation stability of lager double-suction centrifugal pump is becoming an important issue. High radial force could result in fatigue failure of pump shaft and vibration of impeller. In order to find the effect of double-volute casing on impeller radial force, a double-suction centrifugal pump with two casing configurations is investigated by using CFD approach. The two casings have same geometry, the difference is that one is single-volute casing without dividing rib structure, another is double-volute casing with dividing rid structure. Results show that the dividing rib structure of double-volute casing could result in static pressure surrounding the impeller outlet is symmetry at every operating conditions, this is the reason why radial force of double-volute casing is lower than single-volute casing. The radial force vector diagrams for two casings are all hexagonal. However, radial force of double-volute casing is nearly equal at every operating condition, the centre of hexagon for double-volute casing is nearer to origin of coordinate, these results indicate radial force of double-volute casing is lower than single-volute casing. The rotating frequency and the blade passing frequency dominate the radial force fluctuation in single-volute casing, while both of them are almost not existed in double-volute casing. The results indicate that double-volute casing could significantly reduce radial force fluctuation in double-suction centrifugal pump.
Topics: Centrifugal pumps, Impellers, Suction, Blades, Computational fluid dynamics, Fatigue failure, Geometry, Pressure, Pumps, Stability
Analysis of S Characteristics and Pressure Pulsations in a Pump-Turbine With Misaligned Guide Vanes
Hui Sun, Ruofu Xiao, Weichao Liu, Fujun Wang
Growing environmental concerns and the need for better power balancing and frequency control have increased attention in renewable energy sources such as the reversible pump-turbine which can provide both power generation and energy storage. Pump-turbine operation along the S-shaped curve can lead to difficulties in loading the rejection process with unusual increases in water pressure, which lead to machine vibrations. Pressure fluctuations are the primary reason for unstable operation of pump-turbines. Misaligned guide vanes (MGVs) are widely used to control the stability in the S region. There have been experimental investigations and computational fluid dynamics (CFD) simulations of scale models with aligned guide vanes and MGVs with spectral analyses of the S curve characteristics and the pressure pulsations in the frequency and time-frequency domains at runaway conditions. The course of the S characteristic is related to the centrifugal force and the large incident angle at low flow conditions with large vortices forming between the guide vanes and the blade inlets and strong flow recirculation inside the vaneless space as the main factors that lead to the S-shaped characteristics. Preopening some of the guide vanes enables the pump-turbine to avoid the influence of the S characteristic. However, the increase of the flow during runaway destroys the flow symmetry in the runner leading to all asymmetry forces on the runner that leads to hydraulic system oscillations. The MGV technique also increases the pressure fluctuations in the draft tube and has a negative impact on stable operation of the unit.
Topics: Fluctuations (Physics), Guide vanes, Pressure, Pump turbines, Flow (Dynamics)
Experimental Investigation of Relationship Between Pressure Fluctuations and Vibrations for a Double Suction Centrifugal Pump
Zhifeng Yao, Fujun Wang, Ruofu Xiao, Chenglian He, Zhuqing Liu
Proc. ASME. AJK2011, ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D, 61-68, July 24–29, 2011
Paper No: AJK2011-06014
DOI: https://doi.org/10.1115/AJK2011-06014
Double-suction centrifugal pumps are widely employed in large-scale pumping stations, which generally run in the conditions of large discharge with huge energy consumption. Pressure fluctuation caused by internal flow due to tongue-impeller interaction is the primary source of pump vibration. In this paper, pressure fluctuations and vibrations signals on volute casing wall were experimentally obtained at five flow rates ranging from 59% to 121% of nominal flow rate. Time and frequency domains of the signals were mainly analyzed by using statistical and fast Fourier transform methods. The results show that rotational frequency, blade passing frequency and their harmonic frequencies of pressure fluctuations as well as vibrations are clearly identified. The magnitude at blade passing frequency has close relationship with the measurement location related to the volute tongue, and becomes larger when the flow rate deviates from the nominal flow rate. The magnitudes at blade passing frequency can increase by 70% and 151% at high flow rate over that at the nominal flow rate for pressure fluctuations and vibrations, respectively. While the magnitude of vibration at rotational frequency keeps nearly constant at partial flow rate, and decreases at high flow rate.
Topics: Centrifugal pumps, Fluctuations (Physics), Pressure, Suction, Vibration, Flow (Dynamics), Blades, Signals, Energy consumption, Fast Fourier transforms
Experimental Investigation of Time-Frequency Characteristics of Pressure Fluctuations in a Double-Suction Centrifugal Pump
Zhifeng Yao, Fujun Wang, Lixia Qu, Ruofu Xiao, Chenglian He, Min Wang
J. Fluids Eng. October 2011, 133(10): 101303.
Pressure fluctuation is the primary reason for unstable operations of double-suction centrifugal pumps. By using flush mounted pressure transducers in the semispiral suction chamber and the volute casing of a double-suction pump, the pressure fluctuation signals were obtained and recorded at various operating conditions. Spectral analyses were performed on the pressure fluctuation signals in both frequency domain and time-frequency domain based on fast Fourier transform (FFT) and an adaptive optimal-kernel time-frequency representation (AOK TFR). The results show that pressure fluctuations at the impeller rotating frequency and some lower frequencies dominated in the semispiral suction chamber. Pressure fluctuations at the blade passing frequency, the impeller rotating frequency, and their harmonic frequencies were identified in the volute casing. The amplitude of pressure fluctuation at the blade passing frequency significantly increased when the flow rate deviated from the design flow rate. At 107% of the design flow rate, the amplitude increased more than 254% than that at the design flow rate. The time-frequency characteristics of these pressure fluctuations were affected greatly by both operating conditions and measurement locations. At partial flow rates the pulsation had a great irregularity and the amplitudes at the investigated frequencies were much larger than ones at the design flow rate. An asymmetrical pressure fluctuation structure in the volute casing was observed at all flow rates. The pulsation behavior at the blade passing frequency was the most prominent near the volute tongue zone, and the pressure waves propagated in both the radial and circumferential directions.
Topics: Flow (Dynamics), Fluctuations (Physics), Pressure, Suction, Centrifugal pumps, Pumps, Impellers, Blades


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Architecture, condos, New Developments, Upper East Side
Art meets architecture at 180 East 88th including an intricate plasterwork installation in the lobby
Posted On Mon, October 16, 2017 By Michelle Cohen In Architecture, condos, New Developments, Upper East Side
CityRealty previously reported on the highly anticipated–and visually unique–skyscraper rising at 180 East 88th Street. Developers DDG want the 50-story condominium tower to stand apart from the sea of glass towers rising on the Upper East Side, and renderings show that the building's design is indeed a breathtaking departure from the average both inside and out, from herringbone-patterned brickwork to each unit's herringbone floors imported from Austria. As an example of the project's unmatched level of individuality and attention to detail, DDG is working with a series of artists, including the renowned stucco artist Jan Hooss, who is creating an intricate plasterwork installation above the fireplace that will anchor the building's lobby. Based in Stuttgart, Germany, the artist has worked with Brad Pitt and Angelina Jolie at Chateau Miraval. DDG CEO Joseph McMillan told CityRealty, "We wanted something unique and different for this building which is why we went with stucco art."
DDG is passionate about the importance of art in architecture and how the two work together. Says McMillan, "With every project, we look to the property and the real estate to inform us to what the appropriate piece is. That's how we select the artist and the piece, it has to tell a story. It is critical that the real estate and the art come together to tell a truly compelling story."
In the video, the artist speaks of his spiral-based design for the lobby. Referring to his work in general, Hooss talks of the intention of discovering something by doing it: "If you don't walk from here to there you don't see what is there–or what is between here and there."
A landscaped path covered by a sculptural bronze canopy will lead to the aforementioned lobby. The floors above will offer amenities that will include a fitness room, partial basketball court, and a wine room. Residences will range from lofts to five-bedrooms. Conceived with an art collector in mind, they'll have 14-foot ceilings, entry galleries, and picture rails that sit a few feet below the ceiling to ground inhabitants within the space. There will be several full-floor and duplex layouts, many with a balcony or a terrace.
Photo: CityRealty
In addition to the art within, the 48-unit condo will be wrapped in hand-laid Kolumba bricks punctuated by nine-foot-by-nine-foot windows and concrete catenary arches at its base, waist, and crown. The slender tower rises 524 feet above Third Avenue, making it the tallest building north of 67th Street and giving residents exquisite panoramic views of the skyline, park, and rivers. Construction has reached the 14th floor and quickly climbing.
You can find out more about 180 East 88th Street here.
Developers Used a Four-Foot-Wide Lot to Build a Taller Upper East Side Tower
Units Come Online for 180 East 88th Street, Tallest Building Between 72nd Street and Albany
Rafael Vinoly's Three Waterline Square tops out, first of starchitect trio
All renderings courtesy of DDG.
Tags : 180 East 88th Street, ddg, Jan Hooss
Neighborhoods : Upper East Side


Tail between its legs, the video games industry tried to retreat from 2009. Heavy hitters like Splinter Cell: Conviction, Bioshock 2, Bayonetta and Heavy Rain were pushed back to next year, ostensibly to allow more development time, but more likely to avoid competition from Modern Warfare 2 and Halo 3: ODST during a time of frugal gaming. Despite it all, there were plenty of games to love no matter what genre you're into. I've got my favorites, upon which I've continued the tradition of bestowing arbitrary superlatives instead of arbitrary numerical rankings. Read on to find out what games were Technologizer's best of 2010.


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The Balance - Vex Ruffin
from the album Conveyor (2017)
OK, it is time for reader participation. Please recite a line from the Blondie song Rapture.
Did you say "Fab 5 Freddy told me everyone is fly"? Come on. I know you did. Unless, of course, you are one of those Subaru-loving weirdos. Anyhow, I would bet that more people know of Fab 5 Freddy through that single line than through all the other publicity and acclaim he has received in his magnificent lifetime.
On the surface, this doesn't seem fair. Just ask any of the other four guys in the Fabulous 5.
But at the core, this result is all about connections. All about expanding your network into other worlds and then amplifying those connections.
The Fabulous 5 were master graffiti artists - known as Subway Writers - who specialized in spray painting their art across entire subway cars. In The Bronx, they became legendary and stood at the nexus of graffiti art and the emerging rap and hip-hop scene. Both were about self-expression. About being noticed.
Fab 5 Freddy then crossed the racial divide, reaching out to Lower East Side graffiti artists, like Keith Haring, which introduced him into new circles that included Andy Warhol, The Village Voice, and the Punk Rock scene. In the latter, he forged a friendship with Chris Stein and Deborah Harry, of an up and coming band, Blondie.
Once Blondie skyrocketed to stardom with their Parallel Lines album, Fab 5 Freddy took time to indoctrinate them in the underground art of The Bronx, including rap music. This resulted in Blondie creating Rapture, the first song containing rap lyrics to reach #1 on the US Charts.
This helped create mind bending opportunity for the art and music of The Bronx.
Now, let's shift scenes to Vex Ruffin, a self-taught musician from the Los Angeles area who specializes in minimalist punk music. As he has honed his craft, he has begun infusing beats and samples, not too indifferent from early hip hop, which, when combined with his punk sensibilities, creates music with a direct connection to NYC 1980.
One of Vex's friends shared a new song - The Balance - with a friend, suspecting he might enjoy it. That friend was Fab 5 Freddy, who offered to rap on the song. It was Freddy's first recording in 30 years. In Fab 5 Freddy's words:
"I liked the way this idea organically developed and I began to see my involvement as a sort of art performance piece. The track reminded me of cool dance records that downtown NY DJ's played back in the 80's at places like The Mudd Club, The Garage, Area, Danceteria, and Nells where I hung out, so I put myself in that mindset when working on my lyrics for this song."
And through Fab 5 Freddy's participation, Vex Ruffin will reach thousands of new listeners he may not otherwise have. It is all about the power of connections, of self-promotion, of extending your reach into secondary networks, and beyond.
It is also about making great art and sticking with it. I dig what Vex Ruffin has achieved. It is inspiring.
Click Here to watch the music video to The Balance by Vex Ruffin featuring Fab 5 Freddy.
Click Here to watch video from a recent exhibit of Fab 5 Freddy's art.
Click Here to for some incredible graphical storytelling from The Nib detailing how Fab 5 Freddy met Blondie.
Click Here to watch the original music video for Rapture by Blondie.
Jaba B April 9, 2017 at 2:55 PM
Not so much a Subaru lover, but my phrase was "back to back sacroiliac" from rapture. But hey, being fly was cool too.
The Vex Ruffin video with Fab 5 Freddy was awesome. The infusion of graphic novel art with a segue to live was a wonderful experience.
Not to mention, the memory flash back from Rapture put me on a listening quest that lasted for some while. Thanks.
40 Watt Gigolo April 9, 2017 at 3:04 PM
OK JB, I'll give you sacroiliac. Agreed about the graphic art video. Too cool.
Call 32075! - Shed
Love You To The Sky - Erasure
Sugar For The Pill - Slowdive
Raymond And the Wires - Robyn Hitchcock
Gigolo A Go Go - Episode 2
In The Midst - sir Was
These Foolish Things - Bob Dylan
Cry Cry Darlin' - Leslie Mendelson
Stop (And Start Again) - ADULT.
Andromeda - Gorillaz
Gravediggin' - The Buttertones
This Cities Undone - The Moonlandingz
Lacking in Your Love - Desperate Journalist
French Press - Rolling Blackouts Coastal Fever
Can't Hold On - Black Lips


Opinions are argued about regularly. If not how would persuasion or correction ever happen?
Seriously depends on the doctor!
You mean she did good with cooldowns cut in half?
…I wish they'd take that back so PvP players quit throwing it in our face.
Persuasion and discussion are fine, just don't push opinions as fact.
It's easy to notice for me to notice as well. The range increase is just too small to really be of use.
I get use out of it since it allows me to stay further away. I find it especially useful on the thrall ops, in fact, against the elite bots and during Aria's battle. It's not as powerful as it could be, but I don't think it's as bad as many people consider it to be (similar to how I really like Whitewater rather than GwtF; in PvE, I actually find Whitewater to be the better for boss killing because Wave Shock's damage doesn't scale).
You yourself used it as an argument therfore you made it relevant. Works in court also.
"She's literally perfectly balanced right now" this is pushing your opinion as fact also.
The difference isn't that great at all. I've used it many times. The difference between with or without it isn't large enough to make it more useful for than like kinetic diffusion. There will still be plenty out of range but at least if I take the other option I can dance around them easier. If it had more range it would be an actual strong contender to be chosen but it isnt.
What are you talking about? I think you misconstrued my "irrelevant" for something other than what i was impying: people are entitled to their opinions.
Seriously, listen to your doctor.
My opinion: my team often takes Alani for her ability to push and CC safely. Being able to burst heal from safety is a valuable tool, something only reyna can do, but reyna suffers heavily on the DPS and general utility front and still heals less. DJe, our support, easily drops 1100ish on an ally in three seconds or so (3 stacks, attack sequence, reheal) and can help waveclear with Waveshock / Emergence while I'm busy killing enemies.
She's very viable, but the current preeminence of Beatrix is hurting burst healers in general. Once she settles down and gets a hotfix or two things will be fine again.
This. It's pretty obvious when I'm trying to heal someone else that's been wounded; I've got no clue if I have been wounded.
should be at the bottom of the screen, like slows and weaken, etc. ill have to double check. kit, you want to jump in a test match with me real quick?
Just did a match with Kitru, there is no feedback to the player that they are wounded, unlike silence, stun, weaken, etc.
Especially with all the wound that's going on, that would be great if it had some type of animation.


The products range BioFibra ® is a real alloy composite wood fiber / biodegradable polymer. BioFibre ® products are compostable, bio-equivalent and offer degrees tailored to the different techniques of plastics processing (injection, thermoforming, calendering ...).
These materials are made from biopolymers of vegetable origin alloyed with mineral charges.


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The original Richard Wilhelm translation for the hexagram line...
T'ai - Peace
above: K'un / The Receptive, Earth
below: Ch'ien / The Creative, Heaven
CHANGING LINE:
Hexagram Eleven/Line Five
Six in the fifth place means:
The sovereign I
Gives his daughter in marriage.
And supreme good fortune.
The sovereign I is T'ang the Completer.1 By his decree the imperial princesses, although higher in rank than their husbands, had to obey them like all other wives. Here too we are shown a truly modest union of high and low that brings happiness and blessings.
1. [This refers to Ch'êng T'ang, the first of the Shang rulers, whose reign is thought to have begun in 1766 B.C. However, modern Chinese scholarship no longer accepts the identification of the Emperor I (1191 - 1155 B.C., according to tradition) with T'ang, and holds that the daughter mentioned was given to King Wên's father, or perhaps to King Wên himself.]
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Claimed (S04E11) is the eleventh episode of season four of "The Walking Dead" released on ... More Claimed (S04E11) is the eleventh episode of season four of "The Walking Dead" released on Sun Feb 23, 2014. Over 28,304 TV Time users rated it a 7.78/10 with their favorite characters being Danai Gurira as Michonne, Andrew Lincoln as Rick Grimes and Steven Yeun as Glenn Rhee.
Je les adore ensemble !
I WAS DYING INSIDE !!!


text:
Get Rid of Dust Mites »
Do Dust Mites Bite? Here's How to Get Rid of Dust Mite Bites
19 Shocking Flea Facts You Need to Know to Defeat Them
How to Get Rid of Fleas on Humans
How to Get Rid of Fleas in Bed in 6 Simple Steps
Top 10 Homemade Ant Killer Recipes: DIY Ant Killers that Work
Home Remedies for Fleas: What Works and What Doesn't
12 Home Remedies for Ants Put to the Test: What Works?
How Do You Know if You Have Bed Bugs: 7 Tell Tale Signs of Bed Bugs
7 Tips to Find and Destroy a Roach Nest
How to Get Rid of Baby Roaches (And Why You Want to Get Them While They're Young)
How to Use Diatomaceous Earth for Fleas: 5 Tactics to Kill Fleas with DE
What Kills Cockroaches Instantly? (And Why Quick is Not Always Best)
What Do Ticks Look Like? 23 Pictures of Ticks in All Life Stages
8 Home Remedies for Dust Mites that Work (And The Ones That Don't)
Get Rid of Ants
Get Rid of Bed Bugs
Get Rid of Dust Mites
Get Rid of Fleas
Get Rid of Fruit Flies
Get Rid of Mice
Get Rid of Mosquitoes
Get Rid of Roaches
Get Rid of Scorpions
Get Rid of Silverfish
Get Rid of Termites
Get Rid of Ticks
/ By	Pat
You're itchy. There's bumps on your skin. And you have dust mites. Which leads you to wonder: Do dust mites bite?
Listen. No one likes a negative person. Sometimes, it's essential to try and find something good to say, even about those with very few positive qualities.
No, I'm not talking about Karen in accounting. (But seriously, Karen in accounting is the worst, right?) I'm talking about dust mites.
These microscopic creatures invade our homes, and that population can reach huge numbers before we even know about it. And most likely, you won't know about it – after all, you can't see dust mites without a microscope.
But if you're allergic, you can most definitely feel their presence. A runny nose, puffy eyes, sneezing, and shortness of breath are all signs of a dust mite allergy. These tiny bugs, and the proteins they produce in their droppings and shed skins, can even be a contributing factor towards asthma.
But there's one good thing we can say about these creatures…
Do Dust Mites Bite?
So, do dust mites bites? No, they don't. Not people, anyway. The structure of their mouths isn't set up for biting people, and even if it were, these creatures are just too small to break human skin.
At around 1/64 of an inch in length, these bugs are too small even to really be aware of our existence. Or at least they would be if it wasn't for the bounty of skin flakes that rains down upon them from above.
We all shed dead skin throughout the day. It's how we maintain our fresh and youthful looks – some of us more than others. And it's these shed skin flakes that feed the dust mites in your home.
They have no interest in skin as long as it stays on your body. Only once you shed it do the mites consider it a tasty treat.
But although they are quite different creatures, dust mites are often confused with another type of bug that lives in our homes. A bug that can and does bite. Often, when people talk about dust mites, what they are really thinking of is bed bugs.
What Do Dust Mite Bites Look Like?
Let's say it again: dust mites don't bite people. Some mites bite people, such as scabies and certain species of bird mites. But bites from bird mites are rare unless you have nesting birds in your home, and scabies is a medical condition that needs to be treated by a doctor.
If you are getting bitten by something you can't see, it could be one of these creatures. But it isn't dust mites.
In some people, the allergens created by dust mites can cause a rash on the skin. Sometimes, people assume that this itchy rash comes from bites.
However, a far more common reaction to the presence of dust mites is symptoms similar to a common cold, such as sneezing, runny nose, puffy eyes, and respiratory problems.
Bed bugs, on the other hand, most definitely do bite. In fact, their lives depend on it. Bed bugs feed on human blood, almost exclusively. They will pierce through your skin while you sleep to get it, and these bites usually raise itchy red welts where the skin has been punctured.
Dust Mite Bites vs. Bed Bug Bites
It's very hard to tell what's biting you from the bites alone. The way in which bed bugs pierce human skin is very similar to the way that other bloodsuckers, such as mosquitoes and fleas, do.
However, bed bugs are very indiscriminate about where they bite. While fleas mostly target ankles, wrists, and other areas of thin skin, a bed bug bite can happen just about anywhere.
Likewise, mosquito bites tend to happen outside. Bed bugs live indoors and hide in cracks and crevices in furniture around the home when not feeding on us. So if you're getting multiple bites that seem to happen overnight while you sleep, there's a good chance you may have bed bugs.
Dust mites live in beds too. A regular mattress can contain as many as 10 million of these tiny creatures. But they and their droppings are too small to be seen.
And herein lies a helpful tip to immediately distinguish dust mites vs bed bugs – unlike dust mites, which need a microscope to be seen, bed bugs are quite visible, especially once they reach adulthood.
A mature bed bug can be up to 3/8 of an inch in color and is generally a dark reddish-brown, colored by the blood it feeds on. So if you do have bed bugs, a thorough inspection of your bedroom and the rest of your house may be enough reveal them.
How to Get Rid of Dust Mite Bites
If you're confident it's dust mites and not bed bugs or some other pest that you're dealing with, you'll want to get rid of these microscopic creatures.
But how do you fight something you can't even see? Well, it's not easy. Dust mites are extremely common, found in virtually every house in the world.
And the awful truth is that you may never completely eradicate these bugs from your home. But you can reduce their numbers and deal with the allergens they produce to alleviate the symptoms they cause.
How? Here's a quick guide to get rid of dust mites – and the allergy symptoms that can feel like dust mite bites – along with them!
Vaccuum
All those times when you were a kid, and your mom told you to tidy your room, you may have wondered why. It turns out, Mom knew what she was talking about.
Dibea UV Dust Mite Vacuum
Regular vacuuming is one of the best ways to not only kill dust mites but also remove their droppings and shed skins, which are what cause the allergies in sensitive people.
Use a dust mite vacuum with a HEPA filter to make sure that the allergens get trapped inside the machine instead of being recirculated around the room.
Dust mite covers
Dust mites can live throughout the home. But your bed is one of their favorite places. It offers the high humidity they need and a great source of the shed skin that they crave.
Sleep Defense Dust Mite Covers
So wrapping your mattress in a specially designed dust mite cover can really help to reduce the allergens being released into the air you breathe.
Look for a cover that is certified for use against dust mites, and has a tight enough weave to keep these tiny creatures and their droppings inside. It won't solve the problem by itself, but by isolating a major part of the dust mite population, it will provide some immediate relief.
Also, if you happen to have bed bugs as well, these covers can help protect you from those pests too.
Sprays and powders
Since killing dust mites doesn't really solve the problem of the allergens they create, regular bug spray isn't what you need to deal with these creatures.
Allersearch Dust Mite Spray
What you want instead is an anti-allergen spray. These specially designed dust mite sprays break down the proteins in the dust mite droppings, rendering them harmless, even to those who are allergic.
Wash and dry bedding
A hot wash above 130°F will kill dust mites and remove the allergens they produce from your bedding. Since the bed is such a hot spot for these creatures, try to wash your bedding once a week.
You should also wash drapes, pillows, and any other fabric in the bedroom. Dust mites are so small that they can easily hide between the threads of most materials.
A certified HEPA filter has a tight enough mesh to trap dust mites and the droppings they create. But you don't want to be vacuuming all the time.
Luckily, there are air purifiers with HEPA filters that can do the work for you. You just plug it in and it'll go to town removing the microscopic particles that form dust before it even has a chance to accumulate.
Winix Air Purifier with True HEPA Filter
That's good news on two fronts: you get rid of the dust mites' primary food source and the proteins left by dust mites that cause those pesky allergies.
The Final Word on Dust Mite Bites
As we've learned, there's a big difference between dust mites and bed bugs. And when it comes to dust mites, you don't need to worry about being bitten.
These microscopic creatures have no interest in biting you. Instead, it's your dead skin they're after.
So equipped with this knowledge, go forth in your crusade against these eight-legged beasts, and breathe easy. Dust mites are bad, especially if you're allergic. But hey, at least they're a lot better to have than bed bugs.
Previous Post 8 Home Remedies for Dust Mites that Work (And The Ones That Don't) Next Post What Do Ticks Look Like? 23 Pictures of Ticks in All Life Stages
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Copyright text 2016 by Pest Hacks.


text:
Hell Hath No Fury Like a Nasdaq Scorned
Justin Lahart
Apr 3, 2000 5:31 PM EDT
There has never been a dearth of people to claim that tech had gone too far or that the stocks were dangerously overextended while other issues had unnecessarily languished.
Until a few weeks ago, various investment strategists were regularly trotting out charts showing how the selling in old-economy names had gotten ridiculously overdone and how the move in tech had gone from being merely parabolic to paranormal.
But nobody was prepared for the vicious rotation the market has lately taken and the way investors have rapidly shifted money out of
Nasdaq Stock Market
names and into so-called old-economy stocks.
In the past week, the
has shed 14.8% while the
NYSE Composite
have actually gained ground. News that
Microsoft's
(MSFT) - Get Microsoft Corporation Report
talks with the
fell apart over the weekend accelerated the move Monday, when the Nasdaq dropped 7.6% while the Dow added 2.8%.
The violence of the move has shocked even the most seasoned observers.
"Rarely have I seen a day as stupid as today," says Larry Rice, chief investment officer at
Josephthal
. "Talk about a market of excess -- this is nuts. I can understand the Nasdaq having its correction, but to push up the Dow by 300 points here is as excessive on the upside as is the Nasdaq is on the downside."
The problem with such excessive moves is that they can easily be reversed. No sooner could the last buyer go into the "Old Economy" stocks than momentum could shift back into tech. It makes it a very difficult climate for long-term investors -- rather than traders -- to put money to work. So they sit out the market during volatile spells, or throw up their hands and lower their time horizons. This makes the market more prone to big swings, with everyone piling into, and out of, the same things at once.
"It's a snowball effect," says John Manahan, head trader at
Brown Brothers Harriman
. "The Street acts in herds and that's what's going on here. The more that gets sold, the more that come in to sell. The strange thing is this could reverse tomorrow. We could have people buying the better tech stocks."
It seems unlikely that investors have seen the last of such violent swings in the market. Market volatility has been steadily climbing since the mid-1990s, notes
First Union Securities
chief technical analyst Greg Nie.
"Volatility has really been a growing issue since 1998," he says. "It's been part and parcel of the move up." Nor, with the advent of the day-trader, does Nie think the trend will change.
"Rightly or wrongly, investors have become much more short-term oriented," he says. "We're in a high-risk market."
OpinionFeatures and CommentaryMarkets


text:
UAE Minister Denies Any Hacking of Qatar
By Karin Strohecker LONDON, July 17 (Reuters) – The United Arab Emirates was not responsible for an alleged hack of Qatari websites which helped spark a month-long diplomatic rift with Doha, the UAE's minister of state for foreign affairs said on Monday. Anwar Gargash denied as false a story in the Washington Post that cited
Amid Regional Strains, Qatar Says Hackers Post Fake Comments by Emir
CAIRO, May 24 – Qatar said on Wednesday its state news agency had been hacked, after it reported remarks purportedly by its ruler criticizing aspects of U.S. foreign policy in the wake of U.S. President Donald Trump's visit to Saudi Arabia. The comments attributed to Sheikh Tamim bin Hamad Al Thani continued to be carried
Oddities in WannaCry Ransomware Puzzle Cybersecurity Researchers
By Jeremy Wagstaff SINGAPORE, May 16 – The WannaCry malware that spread to more than 100 countries in a few hours is throwing up several surprises for cybersecurity researchers, including how it gained its initial foothold, how it spread so fast and why the hackers are not making much money from it. Some researchers have
Hackers Attack EU Executive but no Data Breach -spokesman
BRUSSELS, Nov 25 – Hackers attacked the European Commission's computers on Thursday, flooding the EU executive's servers with digital service requests, but while connection speeds were affected, there was no data breach, the Commission said. "Yesterday afternoon the Commission was targeted by an attempt to saturate our internet connection," Commission spokesman Margaritis Schinas told a
Yahoo Faces Growing Scrutiny Over When it Learned of Data Breach
By Dustin Volz WASHINGTON, Sept 23 – Yahoo on Friday faced pointed questions about exactly when it knew about a cyber attack that exposed the email credentials of 500 million users, a critical issue for the company as it seeks to prevent the breach from affecting a pending takeover by Verizon Inc. The internet company
Bridging the gap between board governance and IT security teams BY Jim Jaeger Today's cyber criminals are highly sophisticated and constantly morphing their methods and attacks, presenting new risks to the organization on a daily basis. Confronted with the real potential of financial loss, brand and reputation damage, loss of intellectual property, reduction in customer
Apple Fixes Security Flaw After UAE Dissident's iPhone Targeted
By Joseph Menn SAN FRANCISCO, Aug 28 – Apple Inc issued a patch on Thursday to fix a dangerous security flaw in iPhones and iPads after researchers discovered that a prominent United Arab Emirates dissident's phone had been targeted with a previously unknown method of hacking. The thwarted attack on the human rights activist, Ahmed
The Terrorist Algorithm
Would it be possible to stop terrorists by hacking into their accounts? BY Nicholas Noe Could Omar Mateen's killing spree in Orlando, Florida on June 12 have been prevented if Facebook had employed a computer algorithm to flag potential terrorists? The U.S. Senate's Homeland Security Committee, for one, may be interested in exploring this tantalizing, though
NATO Likely to Designate Cyber as Operational Domain of Warl: German Official
BERLIN, June 1 – NATO members will likely agree during a summit meeting in Warsaw next month to designate cyber as an official operational domain of warfare, along with air, sea, land and space, a senior German defence ministry official said Wednesday. Major General Ludwig Leinhos, who heads the German military's effort to build up
SWIFT to Unveil New Security Plan After Hackers' Heists
By Huw Jones and Tom Bergin LONDON, May 24 – The SWIFT secure messaging service that underpins international banking said it plans to launch a new security programme as it fights to rebuild its reputation in the wake of the Bangladesh Bank heist. The Society for Worldwide Interbank Financial Telecommunication (SWIFT)'s chief executive, Gottfried Leibbrandt


text:
Matt Donham moderates panel at Building Museums Symposium
Matt will moderate, "Cultivating a Colossus: Learning from Jeff Koons's Split-Rocker at Glenstone."
Explore the ongoing curatorial and operational complexities of bringing Jeff Koons's Split-Rocker, 2000 to life within the sculpture program at Glenstone Museum. Presenters will review the monumental sculpture program within the landscape at Glenstone, whose mission is to seamlessly integrate art, architecture, and landscape. Panelists will touch on the planning, siting, construction, and first planting of the piece in 2013 and the continuing seasonal challenges the piece presents as a living sculpture installation. Attendees will learn what issues they should consider in the design of outdoor galleries and how long-term landscape maintenance planning is integral to scoping out the design of capital improvements.
More on the 2017 Building Museums Conference here.
Cooper Hewitt Garden Attracts Young Crowd!
Museum Director, Caroline Baumann, achieves the goal of making the Cooper Hewitt the "friendliest place on Museum Mile." The museum's garden is the "gateway drug to design." RAFT is proud to have been a part of this effort. Read the New York Times article here.
Trees New York screens The Trees!
Filmed over the course of five years, The Trees documents the journey of over 400 Swamp White Oaks from their temporary home in New Jersey to the World Trade Center Memorial Plaza. Through the stories of those who design, plan, and construct the Memorial, The Trees explores the evolution of one of the world's most innovative "green" roof gardens. The film shows public reaction to this lasting, yet ever-changing memorial to the victims of the September 11th attacks. A visual meditation on seasonal changes and the possibility of rebirth, The Trees asks how we memorialize and remember.
Thursday, November 3, 2016 from 6:00 PM to 8:00 PM (EDT)
The Arsenal
After the screening there will be a panel discussion, including:
Scott Elliott, Director
Scott Elliott was editing his first PBS documentary twenty blocks from the World Trade Center on September 11th, 2001 and knows many people who lost loved ones in the attacks. The Trees combines his interest in architecture, urban design, and gardening.
Paul Cowie, President of Paul Cowie + Associates
Paul founded Paul Cowie + Associates, a professional consulting firm providing expert advice in the preservation, enhancement and long-term management of shade trees and urban forest resources. Paul's personal areas of expertise include assisting in the development of innovative and sustainable urban planting designs, site-appropriate species selection, tree inventories, and community forest management planning.
Matt Donham, Founding Partner of RAFT Landscape Architecture
A former partner at PWP Landscape Architecture, Matt Donham worked tirelessly to achieve the elegant subtlety of the National 9/11 Memorial amidst the unparalleled political and physical complexity of the World Trade Center site. Recent projects include the multi-modal greenway vision for Queens Boulevard, the garden at the Cooper Hewitt Smithsonian Design Museum, and the colossal living sculpture Split-Rocker with artist Jeff Koons.
Opening the Edge Project Holds First Community Meeting!
The Design Trust for Public Space and the Opening the Edge Fellows held their first community meeting with residents of the Lillian Wald housing development last night. The residents shared their visions of how to make their neighborhood a better place. In the photo above, Fellows Kate Sweater and Destiny Mata discuss the neighborhood with two residents.
Rebecca Hill Awarded Design Trust for Public Space Fellowship!
Rebecca was recently chosen to be the Landscape Architect Fellow for the Design Trust's latest project: Opening the Edge. Rebecca, along with the other Fellows and the Design Trust, will work with public housing residents at the Lillian Wald Housing Development to redesign an underutilized green space.
Matt Donham teaching Queens Boulevard Studio at RISD
Matt returns to RISD's Landscape Architecture Department to teach an advanced studio on roadway infrastructure using Queens Boulevard as a research site. Students will be challenged to imagine future forms and cultural functions for existing roads.
Preservation of over 500 unmarked graves at Sandy Ground Cemetery
Photo courtesy of Sandy Ground Historical Society
"I feel so proud and happy," said Moody of the unmarked grave discovery at a press conference to announce the findings of the "Cultural Landscape Report."
"The 365-page "Cultural Landscape Report"-- prepared by Jablonski Building Conservation with RAFT Landscape Architecture, and Horsley Archaeological Prospection-- combines historical research with recommendations for sensitive maintenance and restoration in the future such as appropriate landscaping and fencing."
Source: Staten Island Live
Cooper Hewitt covered in Architect's Newspaper!
Agaton Strom Photography/Cooper Hewitt, Smithsonian Design Museum
"The Cooper Hewitt is directly adjacent Engineers Gate and the Jacqueline Kennedy Onassis Reservoir, and many of the plantings here are different than what you see in the greater park," Hood said. "These were planted during the City Beautiful era and grow in contrast to [Frederick] Olmsted's curation of local flora and fauna."
The team selected plants from the reservoir's periphery such as Yoshino cherry trees, the red chokeberry, and rhododendrons as well as native herbaceous plants. Benches designed by Yves Béhar and playful Heatherwick Studio Spun Chairs provide ample seating and invite the public to stay and relax.
Source: http://www.archpaper.com/news/articles.asp...
Cooper Hewitt Garden open to the public!
CMG photobombs RAFT at ASLA Annual Meeting!