Apple Daily (Hong Kong) (September 9, 2018) "'The Khmer Empire controlled the Isan area for many years. Phimai is the first place to build a temple in this style, about a hundred years before Angkor Wat.' We walked into the temple with Tim Bewer and listened to history…He is a veritable Thai master."
Vogue (USA) (August, 2017) "On the border of Laos, in the northeastern part of Thailand, lies Isaan, an entire region that has been largely neglected by outsiders. The area is rural Thailand at its best: farmland meets sleepy villages. It's proof that Thailand isn't completely trodden with tourists."
The Nation (Thailand) (July 20, 2016) "Enjoy the sensational food and the simple lifestyles of Thailand's Northeast with a 10-day trip that meanders from Khon Kaen to Ubon Ratchathani."
New York Times (April 15, 2016) "One of the mahouts new to us said he'd enjoyed the tour, and said the elephants had, too. "How do you know?" I asked. "They were making happy noises all day long," he said."
The Nation (Thailand) (June 17, 2015) "Discover the authentic cuisine of Northeast Thailand with Isan Explorer, a family-run travel agency in Khon Kaen province."
Jetsetter (Hong Kong) (Spring 2015) "Shunning the usual elephant rides and trick shows, Isan Explorer's tours let the animals roam free in their natural environment on two, three, and four-day itineraries."
The Star (Malaysia) (April 4, 2015) "The sight of elephants walking past his house in the Thai city of Khon Kaen has always evoked in Tim Bewer a sense of pity."
Los Angeles Times (February 4, 2015) "Isan Explorer worked with the Save Elephant Foundation to ensure that its tours are responsible: There are no chair rides or circus tricks, and the elephants are off-chain."
South China Morning Post (Hong Kong) (January 15, 2015) "Thai tour company Isan Explorer is offering three new Elephant Encounter trips that let tourists interact with the animals in an 'ethical' way."
New York Times (December 21, 2014) "Isan covers one third of Thailand yet is off the well-traveled Chiang Mai-Bangkok-Phuket path. 'It's pretty rare to meet travelers who aren't Thai,' said Tim Bewer, of Isan Explorer, a 'slow tour' company with the motto 'Showing You the Other Thailand.'"


text:
World Cup Stadiums Guide for Russia 2018
Russia 2018 kicks off on the 14th of June and on this page of our site, we have all the information you need on the stadiums that will be hosting the games. There are twelve stadiums in total that will be hosting the 64 World Cup matches and these are spread out over 1,800 miles. We have details on each of these below.
Bet On World Cup Top Games!
Located in Moscow, the Luzhniki stadium is the largest venue. It has the capacity to hold 81,000 spectators. The opening game will be held here on the 14th of June as will the final 31 days later. This stadium originally opened in 1956 and re-opened again in 2018 after renovations. Spectators can expect average highs of 23C along with a 50% chance of rain. The stadium is located on the Moskva River in the west of the country and is located in park land. It is about 6km south-west of the city centre. The Luzhniki stadium used to be called the Central Lenin Stadium and it is steeped in history. It was built in just 450 days and initially held just over 100,000. It was the central venue for the 1980 Moscow Olympics. Renovations were carried out in the 1990s when it was renamed and has since then hosted the 1999 UEFA Cup Final and the 2008 Champions League final.
The matches taking place in Luzhniki Stadium are:
14 June 2018 18:00 – Russia vs Saudi Arabia – Group A
17 June 2018 18:00 – Germany vs Mexico – Group F
20 June 2018 15:00 – Portugal vs Morocco – Group B
26 June 2018 17:00 – Denmark vs France – Group C
1 July 2018 17:00 – 1B vs 2A – Round of 16
11 July 2018 21:00 – W59 vs W60 – Semi Final
15 July 2018 18:00 – W61 vs W62 – Final
Spartak Stadium
Located in Moscow, this stadium has the capacity to hold 43,298 spectators and was opened in 2014. It is located in the north-west of Moscow on a former airfield in the district of Tushino. This stadium is the permanent home of Russian champions Spartak Moscow and the name was changed from Otkrytiye Arena for the World Cup. The exterior of the stadium features hundreds of connected diamonds that are coloured red and white but can be changed to reflect the teams playing.
The matches taking place at Spartak Stadium are:
16 June 2018 16:00 – Argentina vs Iceland – Group D
19 June 2018 15:00 – Poland vs Senegal – Group H
23 June 2018 15:00 – Belgium vs Tunisia – Group B
26 June 2018 17:00 – Serbia vs Brazil – Group C
3 July 2018 21:00 – 1H vs 2G – Round of 16
This stadium is located in the Nizhegorod oblast region and lies approximately 265 miles east of Moscow. It has the capacity to hold 45,331 spectators and opened in 2018. It is situated on the West Bank of the river Volga and construction began in 2015. The stadium has been inspired by the nature in the Volga region and the circle design draws on wind and water. It also lights up at night.
The matches taking place at Nizhny Novgorod Stadium are:
18 June 2018 15:00 – Sweden vs Korea Republic – Group F
21 June 2018 21:00 – Argentina vs Croatia – Group D
24 June 2018 15:00 – England vs Panama – Group G
27 June 2018 21:00 – Switzerland vs Costa Rica – Group E
1 July 2018 21:00 – 1D vs 2C – Round of 16
6 July 2018 17:00 – W49 vs W50 – Quarter Final
This stadium is located in Saransk and can hold 44,442 spectators. It opened in 2018 and is located approximately 400 miles from Moscow. Saransk is the capital of the Republic of Mordovia and situated at the confluence of the Saransk and Insar rivers. This is one of the most colorful venues for Russia 2018 and has an orange, red and white exterior. It is located in the centre of Saransk. Initially the arena will hold 45,000 but this will be reduced to 28,000 after the World Cup by removing the upper tier and turning it into a walking concourse. It will then become home to FC Mordovia Saransk.
The matches being play at the Mordovia Arena are:
16 June 2018 19:00 – Peru vs Denmark – Group C
19 June 2018 18:00 – Colombia vs Japan – Group H
25 June 2018 21:00 – Iran vs Portugal – Group B
28 June 2018 21:00 – Panama vs Tunisia – Group G
This arena will hold 44,779 spectators and opened in 2013. It is located 510 miles from Moscow. Kazan is the capital and largest city of the Republic of Tatarstan. It lies at the confluence of the Volga and Kazanka Rivers. The stadium itself was designed by the same architects that oversaw the new Wembley and Emirates Stadiums. It was completed in July 2013 and has become the home of Rubin Kazan. The stadium also hosted some of the competitions at the 2015 World Aquatics Championships when the football pitch was replaced by two swimming pools.
The matches being played at the Kazan Arena are:
16 June 2018 13:00 – France vs Australia – Group C
20 June 2018 21:00 – Iran vs Spain – Group B
24 June 2018 21:00 – Poland vs Colombia – Group H
27 June 2018 17:00 – Korea Republic vs Germany – Group F
30 June 2018 17:00 – 1C vs 2D – Round of 16
The Samara Arena is located 655 miles from Moscow and has a capacity of 44,807. It opened in 2018 and is situated in the south-eastern part of European Russia at the confluence of the Volga and Samara rivers. The arena has a dome structure and metallic look. It also lights up at night and is designed around a space theme to reflect the regions aerospace sector. It will be renamed after the World Cup to the Cosmos Arena and will become the new home of Krylia Sovetov.
Matches being played at the Samara Arena are:
17 June 2018 16:00 – Costa Rica vs Serbia – Group E
21 June 2018 19:00 – Denmark vs Australia – Group C
25 June 2018 18:00 – Uruguay vs Russia – Group A
28 June 2018 18:00 – Senegal vs Colombia – Group H
2 July 2018 18:00 – 1E vs 2F – Round of 16
Ekaterinburg Arena
This arena is located in Russia's fourth largest city and is on the borderline of Europe and Russia. The stadium is located 1,090 miles from Moscow and can hold 35,696 spectators. It opened in 1953 and had new stands and roof installed for 2018. Ekaterinburg is located at the foot of the Ural Mountains and this is the most eastern stadium being used in the World Cup. This stadium has some unique design elements and temporary extra seating that stretches beyond the outside of the stadium was added to make the venue suitable for the World Cup. The stadium was originally called Central Stadium and was built between 1953 and 1957. It was redeveloped between 2007 and 2011 and is the home of Premier League side Ural Ekaterinburg.
Matches taking place at Ekaterinburg Arena are:
15 June 2018 17:00 – Egypt vs Uruguay – Group A
21 June 2018 17:00 – France vs Peru – Group C
24 June 2018 20:00 – Japan vs Senegal – Group H
27 June 2018 19:00 – Mexico vs Sweden – Group F
Saint Petersburg Stadium
This stadium is located 425 miles from Moscow and can hold 68,134 spectators. It opened in 2017. It is the most northern venue situated at the head of the Gulf of Finland on the Baltic Sea. It is also known as the Krestovsky Stadium or Zenit Arena by day. For the World Cup it is being called the Saint Petersburg Stadium. The stadium was built from Kisho Kurokawa's "The Spaceship" design and is a scaled down version of the Toyota Stadium in Toyota City, Japan. It has a sliding pitch and retractable room and is one of the most technologically advanced stadiums in the world. It will be home to Russian Club Zenit St. Petersburg and will also host group stage matches in Euro 2020.
The matches being held at Saint Petersburg Stadium are:
15 June 2018 17:00 – Morocco vs Iran – Group B
19 June 2018 21:00 – Russia vs Egypt – Group A
22 June 2018 15:00 – Brazil vs Costa Rica – Group E
26 June 2018 21:00 – Nigeria vs Argentina – Group D
3 July 2018 17:00 – 1F vs 2E – Round of 16
14 July 2018 17:00 – L61 vs L62 – Third Place
The Kaliningrad stadium is located 770 miles from Moscow and can hold 35,212 spectators. It opened in 2018. Kaliningrad is a Russian exclave situated on the Baltic Sea between Poland and Lithuania. The stadium design is based loosely on Bayern Munich's Allianz Arena and this new built had a number of difficulties including bankruptcy. It was initially to hold 45,000 spectators and have a retractable roof but this was scaled back to a roofless 35,000 stadium. After the World Cup the stadium will have 10,000 seats removed and become home to Russian team Baltika Kaliningrad.
Matches being played at this stadium are:
16 June 2018 21:00 – Croatia vs Nigeria – Group D
22 June 2018 20:00 – Serbia vs Switzerland – Group E
25 June 2018 20:00 – Spain vs Morocco – Group B
28 June 2018 20:00 – England vs Belgium – Group G
The Volgograd Arena opened in 2018 and can hold 45,568 spectators. It is located 585 miles from Moscow and was formerly Stalingrad. The stadium was built for the World Cup and was constructed on the site of the demolished Central Stadium which stood since 1958. It has a meshed, lattice-like exterior and cabled roof. It is one of the most distinctive stadiums for the competition and will be reduced to a capacity of 35,000 after the World Cup finishes. It will then become the new home of Russian side Rotor Volgograd.
18 June 2018 21:00 – Tunisia vs England – Group G
22 June 2018 18:00 – Nigeria vs Iceland – Group D
25 June 2018 17:00 – Saudi Arabia vs Egypt – Group A
28 June 2018 17:00 – Japan vs Poland – Group H
The Rostov Arena can hold 45,145 spectators and is located 690 miles south of Moscow. It is 20 miles from the Sea of Azov. This is another new stadium and when work began a number of intact shells from World War II were discovered. It is situated on the southern bank of the River Don and the stadium will form part of a new city centre that is being built. After the World Cup this stadium will be reduced to hold just 25,000 spectators and will become home to FC Rostov.
Matches being played at the Rostov Arena are:
17 June 2018 21:00 – Brazil vs Switzerland – Group E
20 June 2018 18:00 – Uruguay vs Saudi Arabia – Group A
23 June 2018 21:00 – Korea Republic vs Mexico – Group F
26 June 2018 21:00 – Iceland vs Croatia – Group D
2 July 2018 21:00 – 1G vs 2H – Round of 16
Fisht Stadium
Located in Sochi, 1040 miles from Moscow, the Fisht Stadium opened in 2013 and can hold 47,700 spectators. Sochi is located on the coast of the Black Sea and stretches for 140km making it the longest city in Europe. It is the most southerly venue for World Cup 2018. The Fisht Stadium was built for the 2014 Winter Olympics and was designed to resemble snowy peaks. It was originally named after Mount Fisht in the Caucasus mountains. The two ends of the stadium were previously open and views of the Krasnaya Polyana Mountains and the Black Sea were visible. These have been filled with temporary seating for Russia 2018.
Matches taking places are the Fisht Stadium are:
15 June 2018 21:00 – Portugal vs Spain – Group B
18 June 2018 18:00 – Belgium vs Panama – Group G
23 June 2018 18:00 – Germany vs Sweden – Group F
26 June 2018 17:00 – Australia vs Peru – Group C
30 June 2018 21:00 – 1A vs 2B – Round of 16
World Cup 2018 Mascot
World Cup 2018 Song
World Cup Stadiums Guide
World Cup Animal Prediction Results
World Cup 2018 Ball Unveiled

redpajama_set_name: RedPajamaCommonCrawl


text:
Janice Gross Stein  (born 1943) is a Canadian political scientist and international relations expert. Stein is a specialist in Middle East area studies; negotiation theory; foreign policy decision-making; and international conflict management.

She was the founding director of the Munk School of Global Affairs & Public Policy at the University of Toronto, where she is a professor.

Life and career
Stein holds degrees from McGill University (undergraduate and doctoral), and Yale University (master's).  She has been a professor at the University of Toronto since 1982, and was named a University Professor in 1996.

Stein is a specialist in Middle East area studies; negotiation theory; foreign policy decision-making; and international conflict management, on which she has lectured at the Centre for National Security Studies in Ottawa and at the NATO Defense College in Rome, Italy.

Stein is the founder and former director of the Munk School of Global Affairs at the University of Toronto and Associate Chair and Belzberg Professor of Conflict Management and Negotiation within the University of Toronto's political science department. Stein has been considered the central figure in making the Munk School a go-to-place for international affairs in Toronto. She has also been referred to as an academic entrepreneur.

Following the end of her directorship at the Munk School, Stein became the senior presidential advisor on international initiatives to the University of Toronto President, Meric Gertler.

Stein is a fellow of the Royal Society of Canada and an Honorary Foreign Member of the American Academy of Arts and Sciences.  Other organizational affiliations and memberships include:
 National Academy of Sciences' Workshop on Middle East Negotiations and the Committee on International Conflict Resolution
 Advisory Group on Cross-Cultural Negotiation
 United States Institute of Peace's Advisory Committee for Peacemaking in the 21st Century
 American Association for the Advancement of Science's Advisory Committee on Conflict Management in the Gulf
 American Academy of Arts and Sciences' Committee on Security
 Chair, International Centre for Human Rights and Democratic Development
 Board Member, Canadian International Council

Honours

Stein was selected to give the 2001 Massey Lecture. She was awarded the Molson Prize by the Canada Council for an outstanding contribution by a social scientist to public debate, was awarded a Trudeau Fellow in 2003.

She is also the winner of the Mershon Prize for an outstanding contribution to public education on issues of national security.

She has been awarded Honorary Doctorate of Laws by the University of Alberta, the University of Cape Breton and McMaster University, as well as Hebrew University.

In 2006, she was made a Member of the Order of Canada. In 2007, she was awarded the Order of Ontario.

Publications and commentary

Janice Stein was a long-time member of the foreign affairs panel on the TVOntario television programs Studio 2 and Diplomatic Immunity, and continues as a regular guest on The Agenda. She has also appeared on CBC Television's The National numerous times.

In the scholarly arena, Professor Stein has authored over 80 books, book chapters and articles on intelligence, international security, negotiation processes, peace-making and public policy.

Books

 Networks of Knowledge

Coauthored books:

Choosing to Cooperate: How States Avoid Loss, with Louis Pauly
We All Lost the Cold War, with Richard Ned Lebow
Powder Keg in the Middle East: The Struggle for Gulf Security, with Geoffrey Kemp
Citizen Engagement in Conflict Resolution: Lessons for Canada in International Experience with David Cameron and Richard Simeon
The Unexpected War: Canada in Kandahar with Eugene Lang

References

External links
 Janice Stein: Brief Biography (Munk Centre for International Studies)
 Audio interview (with Eugene Lang) re: The Unexpected War

1943 births
Living people
20th-century Canadian non-fiction writers
Canadian television personalities
Canadian women non-fiction writers
Fellows of the Royal Society of Canada
McGill University alumni
Members of the Order of Canada
Members of the Order of Ontario
Academic staff of the University of Toronto
Canadian women television personalities
21st-century Canadian non-fiction writers
20th-century Canadian women writers
21st-century Canadian women writers

redpajama_set_name: RedPajamaWikipedia


text:
Tim Locastro
.250 1 17
Position: LF Born: 7/14/1992 Birthplace: Syracuse, New York
Bats/Throws: R/R Draft: 13th Round by Blue Jays (2013)
Hitting Breakdown 2019
Splits AVG G AB R H 2B 3B HR RBI SB CS TBB K GDP OBP SLG
Total .250 91 212 38 53 12 2 1 17 17 0 14 44 1 .357 .340
vs. Left .225 - 80 - 18 4 2 1 5 1 0 7 21 0 .354 .363
vs. Right .265 - 132 - 35 8 0 0 12 16 0 7 23 1 .359 .326
Home .250 44 100 16 25 4 0 0 8 8 0 7 23 0 .345 .290
Away .250 47 112 22 28 8 2 1 9 9 0 7 21 1 .368 .384
Grass .260 43 96 20 25 8 1 1 6 9 0 6 18 1 .383 .396
Turf .241 48 116 18 28 4 1 0 11 8 0 8 26 0 .336 .293
Day .300 31 100 20 30 6 2 1 11 7 0 8 17 1 .393 .430
Night .205 60 112 18 23 6 0 0 6 10 0 6 27 0 .326 .259
Runners and Outs
None on .246 - 122 - 30 6 1 1 1 0 0 9 27 0 .366 .336
Runners On .256 - 90 - 23 6 1 0 16 17 0 5 17 1 .346 .344
Scoring Pos .302 - 53 - 16 2 1 0 16 2 0 2 13 0 .367 .377
None on/out .230 - 61 - 14 1 1 1 1 0 0 3 14 0 .365 .328
ScPos/2Out .276 - 29 - 8 1 1 0 11 0 0 1 6 0 .364 .379
Inning 1-6 .264 - 125 20 33 10 2 0 9 7 0 6 30 0 .359 .376
Inning 7+ .230 - 87 18 20 2 0 1 8 10 0 8 14 1 .356 .287
Pre All-Star .236 47 106 18 25 4 2 0 12 7 0 9 17 0 .364 .311
Post All-Star .264 44 106 20 28 8 0 1 5 10 0 5 27 1 .350 .368
April .364 9 11 4 4 0 0 0 0 2 0 2 5 0 .563 .364
May .241 10 29 6 7 3 1 0 3 2 0 2 3 0 .389 .414
June .224 25 58 8 13 1 1 0 9 3 0 5 7 0 .333 .276
July .295 15 44 6 13 4 0 1 3 2 0 1 8 0 .326 .455
August .242 16 33 10 8 1 0 0 0 4 0 3 9 0 .375 .273
September .216 16 37 4 8 3 0 0 2 4 0 1 12 1 .310 .297
vs. Team
vs.Bal .250 1 4 0 1 0 0 0 0 0 0 1 2 0 .400 .250
vs.Bos - 1 0 0 0 0 0 0 0 0 0 0 0 0 - -
vs.Mil .313 6 16 1 5 1 0 0 0 2 0 1 2 0 .353 .375
vs.NYY .500 1 4 1 2 1 0 1 1 0 0 0 0 0 .500 1.500
vs.Tex .400 4 10 3 4 1 0 0 1 1 0 0 2 0 .455 .500
vs.Tor .231 3 13 2 3 0 1 0 3 0 0 1 2 0 .286 .385
vs.Atl .250 3 4 3 1 0 0 0 0 2 0 1 1 0 .571 .250
vs.Cin .000 4 4 1 0 0 0 0 0 3 0 0 0 1 .200 .000
vs.LAD .162 14 37 7 6 1 0 0 3 4 0 0 10 0 .220 .189
vs.Was .100 5 10 2 1 1 0 0 0 0 0 1 3 0 .308 .200
vs.NYM .333 5 12 2 4 1 0 0 1 2 0 2 1 0 .500 .417
vs.Phi .000 4 5 0 0 0 0 0 0 0 0 0 0 0 .000 .000
vs.StL .500 3 10 2 5 1 0 0 2 1 0 0 1 0 .545 .600
vs.SD .238 9 21 1 5 1 0 0 1 0 0 1 11 0 .333 .286
vs.SF .348 10 23 5 8 2 0 0 5 0 0 3 3 0 .516 .435
vs.Col .250 13 28 6 7 1 1 0 0 2 0 2 4 0 .344 .357
vs.Mia .125 4 8 2 1 1 0 0 0 0 0 1 1 0 .222 .250
vs.TB .000 1 3 0 0 0 0 0 0 0 0 0 1 0 .250 .000


text:
var util = require('./bench-util')

util.emit(1, 'one listener')

redpajama_set_name: RedPajamaGithub


text:
Partnership merges high school AP courses, applied science
By Shaina Cavazos
@ShainaRC
scavazos@chalkbeat.org
College Board and Project Lead The Way team up to blend courses for college or careers
Should top students who are interested in both career technology fields, like engineering, and advanced academic courses, like physics, have to choose between them?
That's what happens in a lot of high schools. Career technology is seen by some as a less academic track, but a new partnership of two top education groups that create high school courses wants to change that.
Choosing between career-oriented and academic electives isn't easy, said Steve Rogers, chairman of the engineering and technology department at Warren Township's Walker Career Center. Sometimes parents shy away from courses they aren't sure will look challenging to a college or employer.
"But when you can have documentation for parents to say, you know, you should take both, then we won't have stigma that engineering classes aren't the same relevance as physics classes," Rogers said.
That's the idea behind a partnership between the College Board, creator of the SAT and Advanced Placement classes, and Project Lead The Way, an Indianapolis-based nonprofit that develops curriculum for applied science and project-based classes.
The partnership would create new high school class sequences, or "pathways," of both AP and Project Lead The Way classes and give students a certificate to show colleges they've completed a demanding course load.
"It is very much focused on pathways and helping kids not just do this once, but do this over time and invest in this and get the kind of preparation to build the confidence to find that this is the thing they are going to fall in love with," said Anna Jones, senior vice president for Project Lead The Way.
Project Lead The Way moved its headquarters from upstate New York to Indianapolis in 2011. Its CEO, Vince Bertram, was named to the Indiana State Board of Education by Gov. Mike Pence earlier this week.
The organization seeks to encourage more students to study science and math by creating classwork that is rooted in problem-solving and applying the subjects to real life. Schools that participate pay a yearly fee for the curriculum, between $2,000 and $3,000. More than 400 schools in the state offer Project Lead The Way classes.
College Board is headquartered in New York and has been around for more than 100 years. The nonprofit writes tests, designs curriculum for Advanced Placement classes and offers resources for parents and students planning for college.
The partnership between the two would be fairly straightforward, Jones said.
The companies would take the existing Project Lead The Way programs — in engineering, biomedical science and computer science — and create options for how AP science and math classes could fit in. For example, a student might be on the Project Lead The Way engineering track and take introduction to engineering and principles of engineering as well as AP Physics.
Students who complete a combination of at least three AP and Project Lead The Way classes will earn the recognition certificate beginning in 2016. To be eligible, however, they must pass all the classes and earn a passing score of three, four or five out of five on an AP exam.
"This credential is designed to value the work that our students are doing that are participating in AP and Project Lead The Way," Jones said. "So it really is building, frankly, the strength of both organizations."
Showing the value of career tech classes
Rogers, who has worked as a Project Lead The Way teacher since 2003, said he likes that the pathways could be used to show parents how students could map out their classes during high school. That way, they might better understand what classes would help their kids succeed in college.
For many STEM — science, technology, engineering and math — professionals, that means both content-heavy AP classes and ones rooted in projects and problem solving like Project Lead The Way.
Oftentimes, Rogers said, it's not clear to parents why students should forgo an AP or core academic class to try the Project Lead The Way classes. Universities typically count passing AP exam scores for college credit, but many don't do the same for other courses. That means kids who take Project Lead The Way classes in engineering might be repeating basic skills classes in college.
"We have kids every year that take three, four, five (engineering) classes and go on to Purdue and Rose-Hulman (Institute of Technology) and really get no benefit," Rogers said. "The class was a benefit, but nothing credit-wise to help the kids out."
Edward Biedermann, with College Board, said the pathways might also help diversify both programs' students.
"All too often we see some students think of themselves only as (career and technical education) students and not try to take AP, and other students may think of themselves as college-bound students who take AP and don't focus on classes with applied learning," Biedermann said. "This partnership is a way to get all types of students into an AP course that has the potential for college credit."
Rogers said that though he's just recently heard about the partnership, he thinks it has the potential to be mutually beneficial for students — AP kids can learn more about STEM careers they can pursue after high school, and Project Lead The Way kids focused on career and technical study, who might not be thinking of college, will be encouraged to earn college credit.
Plus, the new recognition might strike a chord with colleges and push them to cut repetitive introductory classes down the line, Rogers said, saving students time and money.
"It makes sense that we're putting those courses together into more of a defined pathway because, let's be honest, they need AP Physics, they need AP Chemistry," Rogers said. "They might as well see it now when they're in a class of 20 because they'll take freshman chemistry in a lab, and it could be 200 kids at Purdue."
http://in.chalkbeat.org/2015/06/03/partnership-merges-high-school-ap-courses-applied-science/#.VZIkRWBcLKC


Here is a brand new flavor. It is called 'Tom Klong'. Tom Klong is similar to Tom Yum flavor, hot and sour soup, but the herbs are roasted first which gives the soup a mild smokey flavor.
We also offer Wai Wai tom yum flavor and our favorite: Pad Char.
Ingredients: wheat flour, palm oil, shallot, artificial smoked fish flavor, sugar, salt, onion powder, chilli, msg, citric acid. Product of Thailand.


text:
1918 Detroit Electric Model 75 Brougham: An early urban car
By KIT FOSTER
Battery-powered cars continue to be looked at as an alternative to internal combustion. Every time the California zero-emission mandate raises its head, there's a renaissance of pure-battery propulsion.
But the electric market has always been up and down.
After a strong start at the turn of the century led by companies such as Baker, Waverley and Milburn, electric cars entered a fallow period around 1905, primarily due to a lack of infrastructure. Few private homes, even in cities, had electricity with which to charge storage batteries, and community charging stations and battery exchange schemes failed to catch on. Electric power gave way, with internal combustion capturing the public's fancy.
The golden age of the electric began to build around 1909 when a significant number of Americans were able to plug into the convenience of electric living. The most prolific manufacturer of electric cars in the United States was established as the Anderson Carriage Co. in 1884, in Port Huron, Michigan. A builder of high-grade buggies, Anderson entered the electric vehicle market in June 1907, after moving to Detroit. It produced 125 cars that first year, and by 1909 was building 650 cars annually, in runabout and coupe styles.
Principal attractions of the electric car were its convenience and reliability—no cranking was needed and it never stalled—which ensured a following despite its hefty price tag. Anderson's cheapest Detroit Electric in 1909 sold for $1,400, 65 percent more than a Model T Ford. It was an urban car, popular among doctors and women, who appreciated not having to handle flammable fluids. Owners included Thomas Edison's wife, Mina, and Clara Ford, whose car now lives, unrestored, at the Henry Ford Museum in Dearborn, Michigan.
With the retirement of company founder William Anderson in 1918, the Anderson Electric Car Co., as it had become known, was renamed for its product: Detroit Electric Car.John Rich, a retired electrical contractor from Shushan, New York, found this 1918 Model 75 Detroit Brougham in New Jersey. Aside from a recent repaint, the car is unrestored and remarkably well preserved.
Its drivetrain consists of an 84-volt, 4.28-horsepower DC motor running through a conventional driveshaft and differential. Forty-two lead-acid wet cells, 21 front and 21 rear, power the motor through a "controller," basically a rotary switch for making various series-parallel combinations of cells. Originally the cells were housed in hard rubber cases called "jars," which sat in trays strapped into the car. Today it's much simpler and less costly to use a number of six-volt golf-cart batteries, as Rich does.
Rich's Detroit Electric gets about 60 miles on a charge, not quite the range some modern battery-powered cars such as GM's EV1 could do. The 25-mph top speed is too placid for most of our roads. Of course, power-consuming accessories like heater and radio are absent, as are turn signals.
Driving the Detroit Electric is not much more complicated than a "point and shoot" golf cart, but the controls are a bit more intricate. There are three pedals and two levers. The longer lever is the steering tiller: Pushed forward it turns the car to the left, pulled back it turns right. The shorter lever controls the speed. The farther you push it forward, the faster the car goes. Pulling back on the speed lever activates a mechanical drum brake on the motor's armature—regenerative braking was still to come.
Electric motors generate maximum torque at stall speed, so acceleration in the Detroit Electric is immediate and impressive, up to a point—that 25-mph top speed. The pedals provide a parking brake, service brakes (on the same shoes) and reverse, which merely reverses the polarity of the batteries. Thus the Detroit can back up as swiftly as it goes forward, which—with its direct steering ratio—can be a bit scary.
Riding in the car is eerie, as propul-sion is silent. The loudest noise is the creaking of the body. Rich reports it can be hazardous to drive with pedestrians around. People are so accustomed to the noise of internal combustion, they fail to sense that a silent electric car is actually on the move.Detroit Electric Car lasted until about 1939, building cars with modern Dodge bodies grafted on top. In all, the company produced about 14,000 cars, almost 1800 in its peak year of 1917, and it continues to rank as the champion of battery-powered cars in the United States.
VW Charging Network Is in a Global Race with Tesla


text:
blane de st. croix
Unnecessary Memorial: Palisade I & II
By blanedsc / January 16, 2013 / projects
UNNECESSARY MEMORIAL: PALISADE I & II (2012)
Wood, plywood, foam, plastic, paint, branches, dirt, and other natural materials.
Palisade I: 16′ × 11′ × 8′
Palisade II: 13′ × 12.5′ × 9.75′
(Installation views: Wave Hill, Bronx, NY, and Hudson Museum, Yonkers, NY)
Palisade I and Palisade II are sculpture projects related to the Hudson Palisades, presented respectively as an indoor sculptural installation at Wave Hill and an outdoor installation at the Hudson River Museum. These works explore the ecology, environment, and rescue of the Palisades in the early 20th century. Drawing on Blane De St. Croix's deep interest in landscape as a subject, and referencing the historical genre of landscape painting with its accepted standards of sublime beauty, the Palisades sculptures focus on this unique geological formation, which was an important subject of the Hudson River School Painters. The Palisades sculpture projects reflect extensive research conducted by De St. Croix, through site visits, photographic documentation, interviews, internet mining, and satellite imagery. The works and their elements are entirely sculpted by hand, reflecting the artist's interest in creating an intimate tableau.
The Palisade I and Palisade II sculptures represent a portion of the Palisades' cliffs modeled on De St. Croix's research of the rock formations. The sculpted rock formations are assembled and installed in different formations in each venue, customized to engage with the architectural spaces through their mass, form, and scale.
At Wave Hill, Palisade I responds to the interior Georgian Revival architecture of Glyndor Gallery. At the Hudson River Museum Palisade II, installed as an outdoor sculpture, engages the view of the Palisades framed by the Brutalist architecture of the Hudson River Museum. Derived from a common theme, the Palisade sculpture projects are installed in site-specific surroundings that call out different aspects of their underlying grounding in the historical Hudson Palisades.
The Hudson Palisades are steep cliffs on the West side of the river, formed over 200 million years ago at the close of the Triassic Period by the intrusion of molten magma upward into sandstone. This stone is distinct from the schist found on the East side of the Hudson. Preservation efforts led by George W. Perkins (former owner of Wave Hill) and the formation of the Palisades Interstate Park Commission stopped the quarrying for railroad ballast. Through his work with the PIPC, Perkins not only ensured that the view from Wave Hill and the East side of the river would be preserved, but also that the land would be available for public use. The Palisades were designated a National Natural Landmark in 1983.
Photo credit: Stefan Hagen (Palisade I), Jason Weller (Palisade II)
All content © Blane De St. Croix, 2021. Unauthorized use is strictly prohibited. Please direct inquiries regarding any use of content here.


text:
require 'rails_helper'

RSpec.describe KeyVisualization, type: :model do
  subject { FactoryBot.build(:key_visualization) }

  it { is_expected.to be_valid }

  it 'should be invalid without title' do
    subject.title = nil
    expect(subject).to have(1).errors_on(:title)
  end

  it 'should be invalid without description' do
    subject.description = nil
    expect(subject).to have(1).errors_on(:description)
  end

  it 'should be invalid without topic' do
    subject.topic = nil
    expect(subject).to have(1).errors_on(:topic)
  end

  it 'should be invalid without created date' do
    subject.created_date = nil
    expect(subject).to have(1).errors_on(:created_date)
  end

  it 'should be invalid without last updated date' do
    subject.last_updated_date = nil
    expect(subject).to have(1).errors_on(:last_updated_date)
  end
end


text:
Monster Energy – Casey Currie, King of The Hammers 2010
https://www.youtube.com/watch?v=0sSrt9t71vw
Monster Energy presents exclusive coverage of Casey Currie at the 2010 King of The Hammers! This Mad Media produced clip features highlights of Casey's battle in Shannon Campbell's 2009 custom built KOH rig.
Casey had a spectacular start, passing 15-20 vehicles over the first fifty miles.
With a mere five miles to go from finishing, he entered the treacherous "Sledgehammer" section of the coarse and attacked it's nearly impassable rock faces and giant boulders,
Casey made it half way up the hill, but after getting stuck and passed by another competitor, he lost his front air shocks and the airline to both his lockers, leaving him stranded.


Confetti with alpha. Falling confetti from the sky. alpha channel is included.
Falling confetti from the sky. Alpha channel is included.
Falling streamers from the sky. Alpha channel is included.
Very smooth animation. It can be used for birthday, holiday, anniversary concept etc. Also alpha channel is included. You can change the color of box easily with Hue/Saturation.


text:
Philanthropists Richard and Theresa Crocker Donate $1 Million to The Tahoe Truckee Community Foundation
Tags: giving, Philanthropy
TCCF's impact investment agenda, trust-based philanthropy and nimble capital enable swift deployment of gift to support critical initiatives
TAHOE TRUCKEE, CA— Richard and Theresa Crocker, the donor advisors of the Crocker Philanthropic fund, have donated $1 million to the Tahoe Truckee Community Foundation (TTCF), which serves the region by identifying and strategically addressing complex, inter-related issues that affect the community.
Thanks to its impact investment agenda, trust-based philanthropy, and nimble capital, TTCF swiftly deployed the gift to fund critical initiatives where it was most needed, including forest health, workforce development, housing, scholarships, families and community programing.
We are extremely grateful to the Crockers for this generous gift to help TTCF fund its impact agenda, which aims to create a thriving, resilient community where families are stable and happy, housing is affordable, forests are strong and healthy, and the economy is vibrant, diverse and sustainable. The Crockers, who have spent over two decades as part-time homeowners in Tahoe Truckee, used this gift to express their affection for and commitment to the community.
Stacy Caldwell, TTCF's CEO
"Our effective deployment of resources makes it possible for communities like Tahoe Truckee to tackle complex, inter-related issues that affect part-time and full-time residents, the forest, infrastructure, sustainability, and economics," said Caldwell, who notes that TTCF has applied lessons learned from community partnerships and grantmaking during COVID to create a sense of urgency and use trust-based philanthropy to quickly deploy dollars where they are most needed.
"We have long enjoyed the Lake Tahoe area, especially Truckee, which has given us so much joy. We felt it was only right to give back," said Richard and Theresa Crocker, whose primary residence is in Santa Cruz, CA. "It seems a modest gesture compared to all that this area has provided for us. We hope all those that have received the same pleasures from this community are inspired to give back in any way they can."
The gift will support some of TTCF's most critical initiatives: programs that focus on mental health, social services, and disaster preparedness for very low-income residents; scholarships to aid in workforce development; housing solutions; and community programming. In addition, it will help fund TTCF's new Forest Futures Campaign, a comprehensive approach that can be replicated by other communities to align community climate action with transformational finance for forest health and infrastructure, and diversification of local economies.
Forest Futures is the culmination of more than four years of work with 97 multi-disciplinary experts to form a strategy and action plan that addresses a variety of interrelated forestry issues. These include forest management; community education; incentives to protect the wildland urban interface (WUI); improving the local economy by funding infrastructure, jobs, and new market solutions; and transforming existing resources into long-term benefits by providing loans and investments and establishing a long-term community funding source for nimble and flexible financial capital.
Give back to the place you love
Give Back Tahoe, the end-of-year giving campaign hosted by the Tahoe Truckee Community Foundation (TTCF), kicks off on Giving Tuesday…
Read More about Give back to the place you love


text:
Putting A Roof On Risk With A COVID-19 Vaccine Jab
By Bob Mondello
Published January 14, 2021 at 2:37 PM PST
No lollipops at the vaccination center, but they were giving out stickers.
It's 8:45 a.m. on a weekday in Washington, D.C., and if anyone needs a reminder why the coronavirus vaccine is important, there's one arriving at the Takoma Metro stop: an almost empty train pulling up to an almost empty subway platform at the height of rush hour.
One year ago the World Health Organization held its first news conference on a new coronavirus emerging from Wuhan, China. Incredibly, I'm on my way to mark that anniversary by joining some six million Americans who have already been vaccinated.
As I board the train, there are five other passengers on a car with 62 seats. I take my place as far from each of the others as I can — much as they must have when they boarded — reminded of the importance of social distancing by a metallic voice emanating from overhead speakers: "Facial coverings are required at all times while riding Metrorail and Metrobus." Everyone is, indeed, masked.
I'm traveling across town to a location that's dispensing COVID-19 shots two-trains-and-a-bus-ride away from my home: The Washington Senior Wellness Center. When I logged onto the District's vaccination website to make my appointment in the first hour that doing so was possible, the two dozen closer locations already had no reservations left. This is the first time people over 65 are eligible, and by day's end, all available slots had been snapped up, all across the District.
So I'm lucky. As are the 17 people lined up before me when the center opens at 10 a.m. — "opens" being a relative term, since we're still lined up outside on this brisk January morning. Until your appointment time is just a couple of minutes away, you stay outside.
Inside, things are bright and socially distanced. The pharmacists are dispensing the Moderna vaccine (which does not have to be kept insanely cold), and the process at this center is so efficient it seems almost anticlimactic: a form to sign, a pinprick, and about 90 seconds after I enter the room, I get a sticker saying "vaccinated." Sort of an adult lollipop to take home.
I'm told to come back in four weeks for a booster shot that will make me as protected as I'll ever be. And that, I guess, is that.
It all reminded me of a friend's observation that the most important home renovation he'd ever done, replacing his roof, was also the least satisfying. Before he did it, he had a roof. After he did it, he'd spent $30,000, and he had a roof.
This feels a little like that. I have not gotten sick with the coronavirus. And now that I've gotten the first of my two shots, the chances that I'll get sick are much diminished. That's good, because I'm old enough to be at heightened risk of dying.
But society is still at risk, so it won't change the fact that I'll need to wear masks, stay six feet away from people, and avoid crowds until most of the public has been vaccinated, too.
It's enormously important, this protective roof I've put on my own risk. A miracle provided by medical professionals to whom I am profoundly grateful for putting me back where we all started.
Bob Mondello
Bob Mondello, who jokes that he was a jinx at the beginning of his critical career — hired to write for every small paper that ever folded in Washington, just as it was about to collapse — saw that jinx broken in 1984 when he came to NPR.
See stories by Bob Mondello


text:
home > education > colleges > texas colleges
College Profile: University of North Texas
The University of North Texas (informally UNT or North Texas) is a public university located in Denton, Texas, USA. UNT is the flagship of the University of North Texas System, which also includes the UNT Health Science Center at Fort Worth and the UNT Dallas Campus. The university was founded in 1890 by Joshua Chilton as the Texas Normal College and Teacher Training Institute. Since its inception, the institution has had its name modified six times to reflect its growth and change. In 1894, the name became North Texas Normal College, followed by North Texas State Normal College in 1901. The institution was known as North Texas State Teachers College in 1923, North Texas State College in 1949, and North Texas State University in 1961, before becoming the University of North Texas in 1989. With an enrollment of over 34,000 students, it is the largest university in North Texas and the third largest in the state by enrollment. The university is also the tenth largest university by undergraduate enrollment in the United States. The university is a member of the Federation of North Texas Area Universities, offering various graduate degrees in coordination with Texas Woman's University and Texas A&M University-Commerce. The university is accredited by the Southern Association of Colleges and Schools (SACS).
Other Names UNT, North Texas, Mean Grean
Size 20,000 and above
University of North Texas Website
11,003 Fall Admissions
No Associate's degree Yes Two but less than 4 years certificate
Sales, Distribution, and Marketing Operations, General.
Banking and Financial Support Services.
Chemistry, Other.
Nuclear/Nuclear Power Technology/Technician.
English Literature (British and Commonwealth).
Educational, Instructional, and Curriculum Supervision.
Metal and Jewelry Arts.
Social Sciences, General.
City/Urban, Community and Regional Planning.
Immunology.
Physics, Other.
Computer Teacher Education.
Labor and Industrial Relations.
Optics/Optical Sciences.
Physical and Theoretical Chemistry.
Construction Engineering Technology/Technician.
Hospitality Administration/Management, General.
Materials Science.
Broadcast Journalism.
Solid State and Low-Temperature Physics.
Comparative Literature.
Library Science/Librarianship.
Hospital and Health Care Facilities Administration/Management.
Financial Planning and Services.
Reading Teacher Education.
Educational Statistics and Research Methods.
American Literature (United States).
Higher Education/Higher Education Administration.
Engineering Technology, General.
Management Science, General.
Health Services/Allied Health/Health Sciences, General.
Musicology and Ethnomusicology.
Animal Physiology.
Logistics and Materials Management.
Organizational Behavior Studies.
Criminal Justice/Safety Studies.
Jazz/Jazz Studies.
International/Global Studies.
Inorganic Chemistry.
E-Commerce/Electronic Commerce.
Technical and Business Writing.
Health/Health Care Administration/Management.
Fashion/Apparel Design.
Interior Architecture.
Mechanical Engineering/Mechanical Technology/Technician.
Multicultural Education.
Rehabilitation and Therapeutic Professions, Other.
Behavioral Sciences.
Speech and Rhetorical Studies.
Audiology/Audiologist and Hearing Sciences.
Fashion Merchandising.
Latin Language and Literature.
Experimental Psychology.
Molecular Biology.
Gerontology.
Cytotechnology/Cytotechnologist.
Atomic/Molecular Physics.
Industrial and Organizational Psychology.
Kindergarten/Preschool Education and Teaching.
Community Organization and Advocacy.
American Government and Politics (United States).
Merchandising and Buying Operations.
Teacher Education and Professional Development, Specific Levels and Methods, Other.
Organic Chemistry.
Commercial and Advertising Art.
Human Resources Development.
Astrophysics.
Microbiology, General.
Nuclear Physics.
General Office Occupations and Clerical Services.
Analytical Chemistry.
Business Family and Consumer Sciences/Human Sciences.
English Composition.
Special Products Marketing Operations.
Question and Answer about "University of North Texas"


Image Title: Impressive Polished Brass Vanity Lights Bathroom Creative Of 4 Light In Plans 31. Filename: impressive-polished-brass-vanity-lights-bathroom-creative-of-4-light-in-plans-31.jpg. Image Dimension: 1000 x 331 pixels. Images Format: jpg/jpeg. Publisher/Author: Jeffrey Wisoky. Uploaded Date: Sunday - May 20th. 2018 12:24:50 PM. Category: Architecture. Image Source: interior.com.
Tap The Thumbnail Bellow to See Related Gallery of "Impressive Polished Brass Vanity Lights Bathroom Creative Of 4 Light In Plans 31"


text:
Sex With Strangers
19 February, 2015 19 February, 2015 Jemma Lanyon 0 Comments Brisbane Powerhouse, Brisbane Theatre, Jennifer Flowers, Sex with Strangers, Thomas Larkin, Veronica Neave
Thomas Larkin and Veronica Neave in Sex With Strangers. Image by Joel Devereux.
Matilda Award Nominated Sex With Strangers is back for a sizzling return season.
Olivia is a woman d'un certain âge who retreats to a quiet bed and breakfast to work on her second novel. Her first novel didn't enjoy tremendous popularity, but Olivia strives for quality over mass appeal. Surrounded by her favourite books, and armed with a bottle of wine, Olivia settles in for her first night of work, but her tranquil writing cocoon is unraveled by a stranger bursting in from the storm. Enter Ethan. Ethan is a late 20-something blogger who has achieved infamy with his blog about his crusade to sleep with at least one new woman every week. He turned this blog into a New York Times best seller, but he craves legitimacy as he says, 'I think I have a meaningful contribution to the literary cannon in me', and has come to the B&B to focus on it. He's brash, but charming, and after a little stilted small talk, some wine and banter, Ethan reveals a deeper side, and the unlikely pair fall into bed together. Multiple times. What ensues is a fascinating study in psychology. There are many layers to this play; as it raises questions and opens itself to audience interpretation.
As I watched Olivia and Ethan challenge each other to discover what is missing in their lives, I was swept up in the moment. I wanted them to make it as a couple. It was easy to fall for Ethan's charm, his infectious energy, and love of life. Like Olivia, I wanted Ethan to be the reformed character he purports to be, and like Olivia I lived in fear that he would prove himself to be the shallow, uncaring person he has to been to all the women he has written about in his blog.
Veronica Neave and Thomas Larkin in Sex With Strangers [image supplied]
This is an extremely challenging piece of theatre to execute. If Ethan is too glib and two-dimensional, then an audience will be left wondering 'Why do we care? What does Olivia see in him?' If, on the other hand, Ethan is too likeable, if the audience is too firmly on his side, then the play becomes a vehicle for misogyny. It expects Olivia to apologise for her success and ambition, and condones Ethan's manipulative and deceitful behaviour. Thomas Larkin treads this line with agility. His nuanced performance, brimming with boyish energy, is charismatic and likeable enough to pull you along for the ride, but subtle enough to leave you with the uneasy feeling that you've been had.
Veronica Neave is fabulous as the strong, smart, cynical, and passionate Olivia, and together the pair had palpable chemistry. The simple set and lighting design (Troy Armstrong and Jason Glenwright) was extremely effective and left the focus where it should be- on Olivia and Ethan's relationship.
Astutely directed by Jennifer Flowers, this isn't a play that you shuck off as you exit the theatre. It sits in your gut and sets you thinking. It gets you thinking about how well you can ever know your partner, the importance of the past to the present moment, our relationship with technology, and the boundaries between public and private life. Yet, like most good theatre, it's not didactic. It leaves many questions unanswered.
So, go experience Sex With Strangers at the Brisbane Powerhouse until Feb 21, with no strings attached. It's an intimate, fascinating night at the theatre that will leave you wanting more.
← Previous Adelaide Fringe: Blood At The Root
Next → Adelaide Fringe: Velvet


text:
Präposition (DiN13)
by Subsonic Experience
Uwe Grüntjes
Donald Lowndes Sanderson
Hewj
HillTopMan
Claus Streck
Mesmerised
Eric Leblond
noida77
chrazzi1
[0.][.0].000][0.]
Comes in a standard jewel case. Imagery Uta Stiene & Thorsten Niestrath.
Includes unlimited streaming of Präposition (DiN13) via the free Bandcamp app, plus high-quality download in MP3, FLAC and more.
The Regained Paradise 10:08
Throne in the Background 08:39
Strengthening the Volatile, Part 1 06:21
In the Shadow of Possibilities 07:11
Treasures of the World 09:30
Masked Woman 07:50
DiN11 | 2002 | Limited to 1000
The members of Subsonic Experience are traditionalists. Not so much in their thinking, but in their history. Bernhard Wöstheinrich (born in 1968) and Thorsten Niestrath (born in 1967) met in Arts School in Bielefeld, Germany, a city with a reputation in improvised experimental music and design.
Being design students, the two worked together on a number of art projects which included film, performance art, painting and last but not least, the band Subsonic Experience (from autumn 1990 till summer 1993). Artistically influenced by Zen Buddhism, the teachings of Don Juan, Gerhard Richter, Peter Michael Hamel and the likes of Klaus Schulze and early Tangerine Dream, Subsonic Experience played several festivals including two legendary support shows for the band "Embryo".
The band reformed for a weekend recording session at Bernhard´s studio in the German countryside just after Christmas 2000. The result was a rough snapshot of intuitive improvisation at work. The music was all played live, between cigarette breaks and with coffee stained equipment (mostly cheap synths and abandoned floor effects pedals). Most notably there is Thorsten´s amazing synth organ work. His wonderful lead lines and colourful organ clusters can be found on all tracks of the album. Bernhard's duties on the other hand levitated toward keeping the sequencers running, generating endless variations of tones and textures in real time.
Recorded with very basic means, but mixed and mastered using state-of-the-art technology, this album is the perfect amalgamation of musicianship with a traditionalists feel for early EM, and modern production techniques. The material from the recording session was edited and mixed by DiN founder Ian Boddy and mastered by Krautrock specialist and mastering guru Eroc. Bernhard Wöstheinrich, as one half of the duo Centrozoon, has already been featured on DiN 6 - Blast.
released May 1, 2003
ambient berlin school bernhard wöstheinrich em electronic electronic music electronica space music thorsten niestrath Sunderland


text:
24/8/22 Ukraine Refugees Morning Tea
It is Rod's and my great pleasure to welcome you all to Government House this morning.
Government House is a house for all South Australians, for all members of our community.
We want you all to feel welcome and at home here.
South Australia has a long history of welcoming displaced peoples into our community.
From Prussian settlers who arrived here in the 1840s, we have received mid- and post-war refugees and migrants from Southern and Eastern Europe and later from South and South-East Asia, Africa and the Middle East.
Each generation of migrants brings a rich mix of culture, skills and knowledge to our community.
The newly arrived Ukrainians with us today are among more than almost 400 people who have arrived in Adelaide from Ukraine, seeking peace and safety.
As a South Australian community we see coverage of the war in Ukraine on the television and social media.
As for the conflict at large, I am sure the predominant feeling is one of outrage.
As for those affected - for you - I am sure the feeling is of sympathy, of empathy, and a desire to provide practical support.
I greatly admire the strength and courage of all Ukrainians – whether they have chosen to stay, or have had no choice but to stay, or have sought refuge in another country.
I have been touched by the way in which the South Australian community has wrapped its arms around those who have sought refuge here, particularly the Ukrainian community through the work of the Association of Ukrainians in SA and the Slava Ukrainian Cultural Centre.
I thank the Association and the Cultural Centre for their extensive support activities such as helping new arrivals to secure food and shelter, to learn English, and to receive counselling and employment support.
I also thank the many not-for-profit organisations and educational institutions working in partnership with the Association and Cultural Centre.
Today, on Ukrainian Independence Day, Rod and I extend our best wishes to all members of South Australia's Ukrainian community.
Glory to Ukraine.


One of the first steps in cleaning any carpet is determining what made the stain in question. By doing this you can choose a method that will best remove the stain. If you don't know what caused the stain, you will have to troubleshoot the cleaning process and try several different cleaning solutions to find one that is most effective. Artificial coloring in beverages or grape juice are often the causes of purple stains on carpets.
Mix 1/4 tsp. liquid dish soap with 1 cup warm water. Do not use dish soap that has bleach or strong coloring in it, as this could do more damage to your carpet.
Brush the soapy solution into the purple stain with a toothbrush. Be careful not to brush too hard, as this could work the stain deeper into the carpet or could spread it further.
Mix 1 cup distilled white vinegar with 2 cups water if the stain is still visible.
Dip a toothbrush into the vinegar solution then apply the solution to the stain.
Mix 1 tbsp. ammonia with 1 cup warm water. Ammonia is especially effective in removing fruit juices.
Dip a toothbrush into the ammonia solution and scrub away the stain.
Press a cloth into the area to soak up all of the excess cleaning solution.
Mist the area with clear water from a spray bottle. This will help rinse away the cleaning solution residue.
Soak up all of the excess cleaning solution and water with a clean cloth.
Continue misting and drying the carpet until you've rinsed all of the cleaning solution. A slight vinegar smell might remain, but it will dissipate eventually.
Do not scrub the stain, as this can damage the carpet's fibers.


text:
61% of professionals worried about GDPR impact on recruiting and hiring
by Conner Forrest in Security on March 21, 2018, 6:33 AM PST
A recent study found that while 70% of compliance professionals feel that they'll be ready for the May 25 GDPR deadline, doubts loom.
Best practices for reducing GDPR liability
Building a slide deck, pitch, or presentation? Here are the big takeaways:
70% of compliance professionals said they believe their hiring and recruiting will be GDPR compliant by the May 25th deadline. -- Lever, 2018
Despite confidence in GDPR readiness, 61% of compliance professionals are worried about how it will impact future hiring and recruiting. -- Lever, 2018
Despite the looming impact of the General Data Protection Regulation (GDPR), 70% of compliance professionals said they believe their recruiting and hiring processes will be compliant by the May 25 deadline, according to a new study from Lever.
Of those that did feel ready for GDPR, it didn't come without a cost. Roughly a third said they had invested "significant time and resources" into GDPR compliance, and 73% said they had enlisted the help of legal counsel in the process, according to a press release.
GDPR is often associated with customer data, but it will undoubtedly affect the use of employee and candidate data as well. As such, despite their readiness, 61% of the respondents were concerned about how the GDPR would impact their recruiting and hiring processes, including their methods for sourcing potential candidates, the release said.
SEE: EU General Data Protection Regulation (GDPR) policy (Tech Pro Research)
Concerns were widespread across a host of different processes. According to the release, here's how the biggest concerns broke down:
"Maintaining full records of recruiting processing activities" - 52%
"Determining when to get consent from candidates" - 50%
"Determining how long to store a candidate's personal data before deleting it or obtaining consent" - 47%
"Selecting software vendors who will enter into GDPR compliant contracts and meet data security requirements" - 46%
Despite these worries, 90% of those surveyed who already handled sourcing will continue that job under the GDPR, the report said.
The GDPR states that a company must have "lawful basis" for processing personal candidate data, the release said, but many respondents were confused about what this means. Other points of confusion were when consent was needed, and how long data could be stored. The GDPR states that data can be stored "no longer than is necessary for the purposes for which the personal data are processed."
"The GDPR deadline is quickly approaching, but few are discussing the potential impact these regulations will have on how organizations source, recruit and hire their talent," Mike Walsh, director of product marketing of Lever, said in the release.
Cybersecurity Insider Newsletter
Strengthen your organization's IT security defenses by keeping abreast of the latest cybersecurity news, solutions, and best practices. Delivered Tuesdays and Thursdays
Special report: Cybersecurity in an IoT and mobile world (free PDF) (TechRepublic)
GDPR and the cloud: How to manage suppliers in a changing world (ZDNet)
EU General Data Protection Regulation (GDPR): A cheat sheet (TechRepublic)
GDPR: These are the organisations which are least prepared (ZDNet)
Time is running out on GDPR compliance: Find out if you're affected (TechRepublic)
Image: iStockphoto/mixmagic
TechRepublic Premium: The best IT policies, templates, and tools, for today and tomorrow.
The best programming languages to learn in 2022
Check for Log4j vulnerabilities with this simple-to-use script
TasksBoard is the kanban interface for Google Tasks you've been waiting for
Paging Zefram Cochrane: Humans have figured out how to make a warp bubble
2022 tech conferences and events to add to your calendar
Comment and share: 61% of professionals worried about GDPR impact on recruiting and hiring
By Conner Forrest
Conner Forrest is an analyst for 451 Research. He was formerly a Senior Editor for TechRepublic.
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text:
Yodel the Cowboy Way is a compilation recording released by the Western band Riders in the Sky on January 13, 1998.  It is available as a single CD.

For years, the fans of Riders in the Sky had requested a collection showcasing the group's yodeling talents. It was released in 1998.

Track listing
 "That's How the Yodel Was Born" (Douglas B. Green) – 2:18
 "Here Comes the Santa Fe" (Green) – 3:11
 "Cowpoke" (Jones) – 1:42
 "Riding the Winds of the West" (Green) – 2:14
 "Back in the Saddle Again" (Gene Autry, Ray Whitley) – 4:00
 "Blue Montana Skies" (Green) – 3:28
 "Singing a Song to the Sky" (Green) – 2:29
 "The First Cowboy Song" (Green, McMahan) – 2:45
 "The Yodel Blues" (Dolan, Mercer) – 2:24
 "When the Bloom Is on the Sage" (Vincent, Wright) – 3:21
 "At the End of the Rainbow Trail" (Green) – 2:10
 "Desert Serenade" (Green) – 2:59

Personnel
 Douglas B. Green (a.k.a. Ranger Doug) – vocals, guitar
 Paul Chrisman (a.k.a. Woody Paul) – vocals, fiddle
 Fred LaBour (a.k.a. Too Slim) – vocals, bass
also
 Eddie Bayers - percussion
 Louis Brown - trombone
 David Davidson - violin
 Gregg Galbraith - acoustic guitar
 Tommy Goldsmith - acoustic guitar, electric guitar
 Carl Gorodetzky - violin
 Mark Howard - acoustic guitar
 Lee Larrison - violin
 Kenny Malone - percussion
 Bob Mater - drums
 Joey Miskulin - accordion
 Weldon Myrick - steel guitar
 Richard O'Brien - acoustic guitar
 Chris O'Connell - vocals
 Woody Paul - vocals, fiddle, harmonica
 John Probst - accordion
 Kayton Roberts - steel guitar
 Pamela Sixfin - violin
 George Tidwell - trumpet
 Robby Turner - lap steel guitar
 Tommy Wells - drums
 Kristin Wilkinson - viola
 Paul Worley - guitar
 Andrea Zonn - violin, viola

References

External links
 Riders in the Sky Official Website

1998 albums
Riders in the Sky (band) albums


text:
Q: Angular 6 + firebase hosting no ssr I made an app angular 6.0.0 with ssr following this guide :
https://github.com/angular/universal-starter
When I build my app npm run build:ssr and run npm run serve:ssr - SSR works.
When I deploy my app to firebase host, SSR not working.
It's firebase foult or mine ? Locally ssr works ( runs with ngExpressEngine ), but in firebase host it won't work.

redpajama_set_name: RedPajamaStackExchange


text:
\section{Introduction}
While the reference antiferromagnetic (AFM) insulator compounds
of high-$T_{c}$ superconductors (HTSC's)  are well understood in
terms of 2-dimensional (2D) isotropic Heisenberg model the nature
of anomalous spin-dynamics in the doped samples still requires
proper understanding ~\cite{kam}.

One of the simplest models invoked to describe the HTSC's is the $t-J$
model, which contains the essential physics of $CuO_{2}$ planes in the
superconducting cuprates. The $t-J$
(or its extension $t-t^{\prime}-J$) model is the low energy effective model
obtained from the Hubbard model by projecting out doubly occupied sites.
As a result the $t-J$ model is formulated in terms of the so called Hubbard
operators (HO's), which are neither Fermi nor Bose operators.
This particularity makes it difficult to treat the $t-J$ model within
the conventional field-theory methods.

The various approaches, e.g., slave-boson \cite{tan,ste} or
slave-fermion \cite{hed,kan,aue} methods and diagrammatic technique
for HO's  \cite{izu}, have been used to study the spin dynamics within the
$t-J$ model. In the slave-field approaches the local constraint is usually
replaced by the global one restricting the validity of the approach.
Whereas in any approximation formulated in terms of HO's the constraint of
no doubly occupancy can be rigorously preserved.

Recently in
Ref.~\cite{onu} the diagrammatic technique for HO's
has been used to calculate the spin susceptibility
within the Larkin equation \cite{lar}
for the $t-J$ model.
However, in the particular case $J=0$
(corresponding to $U\rightarrow \infty$ limit of the Hubbard model)
the contribution from the irreducible part in
the denominator of Larkin equation (see Eq. (9) of Ref.~\cite{onu})
vanishes, which indicates that the so called kinematical interaction
is not properly taken into account.

In the present paper we study the dynamic spin
susceptibility for the $t-J$ model by applying memory function technique
\cite{for} in term of HO's which has been applied recently
for calculation of the optical conductivity for this model
~\cite{pla}. We show that there exist two different in nature
contributions to the memory function. The first one is due to the kinematical
interaction and comes from the particle-hole excitations in
the itinerant hole subsystem.
While the second one comes from the localized spin fluctuations
due to the Heisenberg interaction.
The existence of these two contributions
explicitly shows that there is a competition between itinerant and localized
magnetism as it has been pointed out in Refs. ~\cite{izu,onu} and
observed experimentally (see, e. g. Ref. ~\cite{aep}).

It is found that the low energy ($\omega\rightarrow 0$) spin dynamics
has a diffusive character. While in the high energy limit
($\omega\rightarrow \infty$ ) the spin-wave-like excitations are
regained. The mean-filed-like (MFL) expression obtained earlier ~\cite{shi}
by Kondo and Yamaji's (KY's) theory ~\cite{kon} is recovered in this limit.

The paper is organized as follows. In the next section we formulate
the $t-J$ model in terms of HO's. In Sec. 3  the general formalism of the
memory function approach is presented and within
the mode coupling approximation
the memory function is calculated.
The self-consistency of the presented approach is discussed in Sec. 4.
Sec. 5 summarizes our main results. In the Appendix the expression for
static spin susceptibility is derived.

\section{ The model}
The Hamiltonian of the $t-J$ model reads
\begin{equation}
H=H_{t}+H_{J}=\sum_{i,j,\sigma}t_{ij}X_{i}^{\sigma 0}X_{j}^{0\sigma}+
\sum_{i,j}J_{ij}\Bigl\{{\bf S}_{i}{\bf S}_{j}-\frac{1}{4}n_{i}n_{j}\Bigr\}.
\label{m1}
\end{equation}
The first term in the right hand-side of Eq. (\ref{m1})
describes an electron
hopping between the nearest ($t_{ij}=t$) and next-nearest
($t_{ij}=t^{\prime}$) neighbor lattice sites. The second term
describes the exchange interaction of localized
spins ${\bf S}_{i}$ between the
nearest neighbor sites ($J_{ij}=J$).
The HO's in Eq. (\ref{m1}) are defined as
\begin{equation}
X_{i}^{\alpha\beta}=|i,\alpha\rangle\langle i,\beta|
\label{m2}
\end{equation}
for three possible states at the lattice site $i$
\begin{equation}
|i,\alpha\rangle=|i,0\rangle,\;\;\;|i,\sigma\rangle,
\label{m3}
\end{equation}
for an empty site and for a singly occupied site by electron
with spin $\sigma/2$ ($\sigma=\pm1$).  In the $t-J$ model only singly occupied sites are
retained and the completeness relation for the HO's reads as
\begin{equation}
X_{i}^{00}+\sum_{\sigma}X_{i}^{\sigma\sigma}=1.
\label{m4}
\end{equation}
The spin and density operators in Eq. (\ref{m1}) are expressed by
HO's as
\begin{equation}
S_{i}^{\sigma}=X_{i}^{\sigma\bar{\sigma}},\;\;\;
S_{i}^{z}=\frac{1}{2}\sum_{\sigma}\sigma X_{i}^{\sigma\sigma},\;\;\;
n_{i}=\sum_{\sigma}X_{i}^{\sigma\sigma}.
\label{m5}
\end{equation}
where $\bar{\sigma}=-\sigma$. The HO's obey the following multiplication
rules
\begin{equation}
X_{i}^{\alpha\beta}X_{j}^{\gamma\delta}=\delta_{ij}\delta_{\beta\gamma}
X_{i}^{\alpha\delta}
\label{m6}
\end{equation}
and commutation relations
\begin{equation}
\left[X_{i}^{\alpha\beta}X_{j}^{\gamma\delta}\right]_{\pm}=
\delta_{ij}\left(\delta_{\beta\gamma}X_{i}^{\alpha\delta}\pm
\delta_{\delta\alpha}X_{i}^{\gamma\beta}\right).
\label{m7}
\end{equation}
In Eq.(\ref{m7}) the upper sign stands for the case when both
HO's are Fermi-like ones (as, e. g., $X_{i}^{0\sigma}$).
The spin and density operators (\ref{m5}) are Bose-like and for them
the lower sign in Eq.(\ref{m7}) should be taken.
The HO's are neither Fermi nor Bose operators, the are projected
operators. These unconventional commutation relations (\ref{m7})
makes impossible to treat the model within the
conventional diagrammatic technique. To use
the latter one needs to introduce slave particles with the
constraint of no doubly occupancy. While in the treatment within
the HO's the constraint is automatically fulfilled.
Therefore we treat the problem in terms of HO's and use
the memory function formalism to determine the dynamic spin
susceptibility.

\section{Memory Function}
\subsection{General Formalism}

The dynamic spin susceptibility is defined as
\begin{equation}
\chi_{\bf q}(\omega)=-\langle\langle
S^{+}_{\bf q}|S^{-}_{\bf q}\rangle\rangle_{\omega}=-
\sum_{{\bf R}_{ij}}e^{-i{\bf q}{\bf R}_{ij}}
\langle\langle
S^{+}_{i}|S^{-}_{j}\rangle\rangle_{\omega}
,
\label{g1}
\end{equation}
where ${\bf R}_{ij}={\bf R}_{i}-{\bf R}_{j}$ and
$\langle\langle A|B\rangle\rangle_{\omega}$ denotes the Fourier transformed two-time retarded
commutator Green function (GF) ~\cite{zub,tse}
\begin{equation}
\langle\langle A|B\rangle\rangle_{\omega}=-i \int_{0}^{\infty}dt e^{i\omega t}
\langle[A(t), B]\rangle,
\label{g2}
\end{equation}
where $\rm{Im}\omega >0$, $ A(t)=\exp (i Ht) A\exp (-i Ht)$,
and $\langle AB \rangle$ denotes the equilibrium statistical average.

In the paramagnetic state
with zero sublattice magnetization
 an average of the
commutator $\langle[S^{+}_{i},S^{-}_{j}]\rangle
=2\delta_{ij}\langle S_{i}^{z}\rangle$ equals zero.
Since just this quantity enters as an initial condition $(t=0)$ in the
equation of motion for the GF (\ref{g1}), it is more convenient to
construct the self-consistent equation for the Kubo-Mori
relaxation function (see, e.g., Ref.~\cite{for})
\begin{equation}
(( A | B ))_{\omega} = - i \int_{0}^{\infty} dt  e^{i
   \omega t}  (A(t), B),
\label{g3}
\end{equation}
where $(A(t), B)$ is the Kubo-Mori scalar product defined as
\begin{equation}
(A(t), B) =\int_{0}^{\beta}d\lambda \langle A(t-i\lambda) B \rangle,
\label{g4}
\end{equation}
where $\beta=1/T$ $(h=k_{B}=1)$.

The GFs (\ref{g2}) and (\ref{g3}) are coupled by the equation
\begin{equation}
\omega  (( A | B ))_{\omega} =
\langle\langle A | B \rangle\rangle_{\omega} -
\langle\langle A | B \rangle\rangle_{\omega =0} .
\end{equation}
There are also following useful relations which can be obtained
from the definitions (\ref{g2})-(\ref{g4})
\begin{equation}
(( i\dot{A}| B ))_{\omega}
=(( A | -i\dot{ B} ))_{\omega}
=\langle\langle A | B \rangle\rangle_{\omega},
\label{g6}
\end{equation}
\begin{equation}
( i \dot{A} , B ) =  ( A , - i\dot{ B} )
=\langle [ A , B ]\rangle,
\label{g7}
\end{equation}
\begin{equation}
(A , B )= - \langle\langle A | B \rangle\rangle_{\omega =0},
\label{g8}
\end{equation}
where  $ i \dot{A} = i dA/dt = [A,H] $.

By using the above formulas for the dynamic spin susceptibility we obtain
\begin{equation}
\chi_{\bf q}(\omega)=\chi_{\bf q}-\omega\Phi_{q}(\omega),
\label{g9}
\end{equation}
where $\chi_{\bf q}\equiv\chi_{\bf q}(0)$ is the static spin
susceptibility and
$\Phi_{\bf q}(\omega)\equiv((S^{+}_{\bf q}|S^{-}_{\bf q}))_{\omega}$.
To calculate the spin-spin relaxation function $\Phi_{\bf q}(\omega)$
it is convenient to employ the memory function approach of Mori
(see, e.g. Ref.~\cite{for}).
We define the memory function $M({\bf q},\omega)$ by the equation
\begin{equation}
\Phi_{\bf q}(\omega)=\frac{\chi_{\bf q}}
{\omega - M({\bf q},\omega)/\chi_{\bf q}}
\label{g10}
\end{equation}

To calculate the memory function we use the equation of motion for the
relaxation function (\ref{g3})
\begin{equation}
\omega((S_{\bf q}^{+}|S_{\bf q}^{-}))_{\omega}=\chi_{\bf q}+
((i\dot{S}_{\bf q}^{+}|S_{\bf q}^{-}))_{\omega},
\label{g12}
\end{equation}
and similarly  $((i\dot{S}_{\bf q}^{+}|S_{\bf q}^{-}))_{\omega}$
obey the following equation of motion
\begin{equation}
\omega((i\dot{S}_{\bf q}^{+}|S_{\bf q}^{-}))_{\omega}=
(i\dot{S}_{\bf q}^{+},S_{\bf q}^{-})+
((i\dot{S}_{\bf q}^{+}|-i\dot{S}_{\bf q}^{-}))_{\omega}.
\label{g13}
\end{equation}
From Eq.(\ref{g7}) we have
$(i\dot{S}_{\bf q}^{+},S_{\bf q}^{-})=
\langle[S_{\bf q}^{+},S_{\bf q}^{-}]\rangle=
2/\sqrt{N}\langle S_{\bf q}^{z}\rangle\delta_{{\bf q}0}$
which is zero in the paramagnetic phase, that results
\begin{equation}
\omega\Phi_{\bf q}(\omega)=\chi_{\bf q}+\frac{1}{\omega}
((i\dot{S}_{\bf q}^{+}|-i\dot{S}_{\bf q}^{-}))_{\omega}.
\label{g14}
\end{equation}

By introducing the zero order GF
$\Phi_{\bf q}^{0}(\omega)=\chi_{\bf q}/\omega$ we rewrite Eq. (\ref{g14}) as
follows
\begin{equation}
\Phi_{\bf q}(\omega)=\Phi_{\bf q}^{0}(\omega)+
\Phi_{\bf q}^{0}(\omega)T_{\bf q}(\omega)
\Phi_{\bf q}^{0}(\omega)
\label{g15}
\end{equation}
where we have introduced the scattering matrix
\begin{equation}
T_{\bf q}(\omega)=\frac{1}{\chi_{\bf q}}
((i\dot{S}_{\bf q}^{+}|-i\dot{S}_{\bf q}^{-}))_{\omega}
\frac{1}{\chi_{\bf q}}.
\label{g16}
\end{equation}
By comparing (\ref{g16}) to the definition of the memory function
(\ref{g10}) we get the following relation between the scattering
matrix and the memory function
\begin{equation}
T_{\bf q}(\omega)=\frac{M({\bf q},\omega)}{\chi_{\bf q}^{2}}+
\frac{M({\bf q},\omega)}{\chi_{\bf q}^{2}}
\Phi_{\bf q}^{0}(\omega)T_{\bf q}(\omega).
\label{g17}
\end{equation}
A formal solution of the Eq. (\ref{g17}) by iteration shows that the
quantity $M({\bf q},\omega)/\chi_{\bf q}(\omega)$ is just the
irreducible part of the scattering matrix which has no parts connected
by the single zero order GF $\Phi_{\bf q}^{0}(\omega)$:
\begin{equation}
M({\bf q},\omega)=\chi_{\bf q}^{2}T_{\bf q}^{irr}(\omega)=
((i\dot{S}_{\bf q}^{+}|-i\dot{S}_{\bf q}^{-}))_{\omega}^{irr}
\label{g18}
\end{equation}

Finally, the dynamic spin susceptibility in terms
of the memory function can be written as
\begin{equation}
\chi_{\bf q}(\omega)=-\chi_{\bf q}\frac{M({\bf q},\omega)/\chi_{\bf q}}
{\omega-M({\bf q},\omega)/\chi_{\bf q}}.
\label{g19}
\end{equation}
\subsection{Mode-coupling approximation}

First we express the memory function in terms of the irreducible
current-current time-dependent correlation function by using the spectral
representation for the GF

\begin{equation}
M({\bf q}, \omega)=\sum_{{\bf R}_{ij}}e^{-{\bf q}{\bf R}_{ij}}\frac{1}{2\pi}
\int_{-\infty}^{\infty}d\omega^{\prime}\frac{e^{\beta\omega^{\prime}}-1}
{\omega^{\prime}(\omega-\omega^{\prime}+i\eta)}\int_{-\infty}^{\infty}
dte^{-i\omega^{\prime}t}\langle J^{\dagger}_{i}(t)|J_{j} \rangle^{irr} ,
\label{g20}
\end{equation}
where the current operator in
the site representation is defined as  $J_{j}=i\dot{S}_{j}^{+}$. Current operator can be written as a
sum of two terms
\begin{equation}
J_{j}=J_{j}^{t}+J_{j}^{J}=[S_{j}^{+},H_{t}]+[S_{j}^{+},H_{J}]
\label{g21}
\end{equation}

In Eq.(\ref{g21}) the first term comes from the so called
kinematical interaction
which is due to the unconventional commutation relation for the HO's
operators (\ref{m7}). This term is proportional to the hopping integral and reads as
\begin{equation}
J_{j}^{t}=-\sum_{m}t_{jm}(X_{j}^{+0}X_{m}^{0-}-X_{m}^{+0}X_{j}^{0-}).
\label{g22}
\end{equation}

The second term in Eq.(\ref{g21}) comes from the exchange interaction between
localized spins and has the form
\begin{equation}
J_{j}^{J}=2\sum_{m}J_{jm}(S_{j}^{z}S_{m}^{+}-S_{m}^{z}S_{j}^{+}).
\label{g23}
\end{equation}

To calculate the irreducible time-dependent correlation function in
the right hand -side of Eq. (\ref{g20}) we employ the mode-coupling approximation
in terms of an independent propagation of the dressed
particle-hole and spin fluctuations
(see, e. g., G\"{o}tze et al.,~\cite{got}).
 This scheme is essentially equivalent to
the self-consistent Born approximation in which the vertex corrections
are neglected. The proposed scheme is defined by the following decoupling of the
time-dependent correlation functions:
\begin{equation}
\langle X_{m}^{-0}(t)X_{i}^{0+}(t)X_{j}^{+0}X_{l}^{0-}\rangle\simeq
\langle X_{m}^{-0}(t)X_{l}^{0-}\rangle
\langle X_{i}^{0+}(t)X_{j}^{+0}\rangle,
\label{g24}
\end{equation}
\begin{equation}
\langle S_{i}^{z}(t)S_{m}^{-}(t)S_{j}^{z}S_{l}^{+}\rangle\simeq
\langle S_{i}^{z}(t)S_{j}^{z}\rangle
\langle S_{m}^{-}(t)S_{l}^{+}\rangle.
\label{g25}
\end{equation}
The cross-correlations like $\langle J_{i}^{t}|(J^{J})_{j}^{+}\rangle$
are ignored within the proposed approximation and they will be omitted.

By using the above defined decoupling scheme (\ref{g24}) and (\ref{g25}) and the
spectral representation for the GF, the memory function (\ref{g20})
can be written as
\begin{equation}
M({\bf q},\omega)=M_{t}({\bf q},\omega)+M_{J}({\bf q},\omega),
\label{g26}
\end{equation}
where $M_{t}({\bf q},\omega)$ is the contribution from the itinerant hole
subsystem and reads as
\begin{equation}
M_{t}({\bf q},\omega)=
\frac{1}{N}\sum_{{\bf k}}^{}t^{2}_{{\bf k}{\bf q}}
\int\!\!\!\!\int\limits_{-\infty }^{\infty }
d\omega_{1}d\omega^{\prime}
\left[ n(\omega_{1}-\omega^{\prime})
-n(\omega_{1})\right]
\frac{A_{{\bf k}}(\omega_{1})A_{{\bf k}-{\bf q}}(\omega_{1}-\omega^{\prime})}
{\omega^{\prime}(\omega-\omega^{\prime}+i\eta)}
,
\label{g27}
\end{equation}
where $n(\omega)=(e^{\beta\omega}+1)^{-1}$,
$t_{{\bf k}{\bf q}}=t_{\bf k}-t_{{\bf k}-{\bf q}}$ with
$t_{\bf k}=z(t\gamma_{\bf q}+t^{\prime}\gamma_{\bf q}^{\prime})$,
$z=4$,
$\gamma_{\bf q}=1/2 [\cos q_{x}+\cos q_{y}]$ and
$\gamma_{\bf q}^{\prime}=\cos q_{x}\cos q_{y}$ for 2D square lattice
(the lattice constant is taken to be unity)
and
$A_{\bf k}(\omega)=-1/\pi\rm{Im}\langle\langle
X_{\bf q}^{\sigma 0}X_{\bf q}^{0\sigma}\rangle\rangle_{\omega}$ is
a hole particle spectral function which is spin independent in the
paramagnetic phase.

The second contribution $M_{J}({\bf q},\omega)$ in Eq.(\ref{g26})
comes from the localized spin subsystem and is given by
\begin{equation}
M_{J}({\bf q},\omega)=
\frac{2}{\pi^{2}N}\sum_{{\bf k}}^{}J^{2}_{{\bf k}{\bf q}}
\int\!\!\!\!\int\limits_{-\infty }^{\infty }
d\omega_{1}d\omega^{\prime}
\left[ N(\omega_{1}-\omega^{\prime})
-N(\omega_{1})\right]
\frac{\rm{Im}\chi_{{\bf k}}(\omega_{1})\rm{Im}\chi_{{\bf k}-{\bf q}}
(\omega_{1}-\omega^{\prime})}
{\omega^{\prime}(\omega-\omega^{\prime}+i\eta)}
,
\label{g28}
\end{equation}
where $N(\omega)=(e^{\beta\omega}-1)^{-1}$ and
$J_{{\bf k}{\bf q}}=J_{\bf k}-J_{{\bf k}-{\bf q}}$, and
$J_{\bf q}=zJ\gamma_{\bf q}$.
In obtaining (\ref{g28}) relation
$\langle\langle S_{\bf q}^{z}|S_{\bf q}^{z}\rangle\rangle_{\omega}=
1/2\langle\langle S_{\bf q}^{+}|S_{\bf q}^{-}\rangle\rangle_{\omega}$
which is valid in the rotationally invariant system has been used.

The real, $\rm{Re}M({\bf q},\omega)$, and imaginary,
 $\rm{Im}M({\bf q},\omega)$,
parts of the memory function are odd and
even functions of $\omega$ , respectively, and they are coupled by the
dispersion relation
\begin{equation}
\rm{ReM}({\bf q},\omega) = \frac{1}{\pi}\int_{-\infty}^{\infty} d\omega^{\prime}
\frac {\rm{Im}M({\bf q},\omega^{\prime})}{\omega^{\prime}-\omega}.
\label{g29}
\end{equation}
Therefore, only imaginary part of the memory function should be evaluated.
\subsection{Asymptotic behavior of $\chi_{\bf q}(\omega)$}
Now we examine asymptotic behavior of the dynamic spin susceptibility.
First we consider the hydrodynamic limit ${\bf q}\rightarrow 0$ and
$\omega\rightarrow 0$. In this limit, $\rm{Re}M({\bf q},\omega)$
being an odd function of $\omega$ vanishes while $\rm{Im}M({\bf q},\omega)$
remains finite. By using Eqs.(\ref{g27}) and ({\ref{g28}) we
can express it as $\rm{Im}M({\bf q},\omega)\simeq -Dq^{2}$
with $D=D_{t}+D_{J}$ where
\begin{eqnarray}
D_{t}=
\frac{\pi}{N}\sum_{{\bf k}}^{}
(\hat{\bf q}\nabla_{\bf k}t_{\bf k})^{2}
\lim\limits_{\omega\to 0}
\lim\limits_{{\bf q}\to 0}
\int\limits_{-\infty }^{\infty }
d\omega_{1}
 |n^{\prime}(\omega_{1})|
A_{{\bf k}}(\omega_{1})
A_{{\bf k}-{\bf q}}(\omega_{1}-\omega),\nonumber\\
D_{J}=
\frac{2}{\pi N}\sum_{{\bf k}}^{}
(\hat{\bf q}\nabla_{\bf k}J_{\bf k})^{2}
\lim\limits_{\omega\to 0}
\lim\limits_{{\bf q}\to 0}
\int\limits_{-\infty }^{\infty }
d\omega_{1}
|N^{\prime}(\omega_{1})|
\rm{Im}\chi_{{\bf k}}(\omega_{1})
\rm{Im}\chi_{{\bf k}-{\bf q}}(\omega_{1}-\omega),
\label{g30}
\end{eqnarray}
where $\hat{\bf q}={\bf q}/q$, $\nabla_{\bf k}=dt_{\bf k}/d{\bf k}$,
$n^{\prime}(\omega)=dn(\omega)/d\omega$, and
$N^{\prime}(\omega)=dN(\omega)/d\omega$.
Finally in the hydrodynamic limit the dynamic spin-susceptibility can be
expressed in the usual form (see Ref. ~\cite{for}) as
\begin{equation}
\chi_{\bf q}(\omega)=\chi_{0}\frac{i\tilde{D}q^{2}}{\omega+i\tilde{D}q^{2}}
\label{g31}
\end{equation}
where $\tilde{D}=D/\chi_{0}$ is the spin diffusion coefficient and $\chi_{0}$
is the static uniform susceptibility.

Unlike to the hydrodynamic limit, in the high energy limit,
$\omega\rightarrow \infty$ the dominant contribution to the memory
functions comes from the real part:
$M({\bf q},\omega)\simeq m_{\bf q}/\omega$ where $m_{\bf q}$ is the first
non-vanishing moment in $1/\omega$ expansion of the memory function
defined as
\begin{equation}
m_{\bf q}=-\frac{1}{\pi}\int\limits_{-\infty}^{\infty}d\omega\rm{Im}M({\bf q},\omega)=
\langle[i\dot{S}_{\bf q}^{+},S_{\bf q}^{+}]\rangle
\label{g32}
\end{equation}
Thus in the high energy limit dynamic susceptibility takes the form
\begin{equation}
\chi_{\bf q}(\omega)=-\chi_{\bf q}\frac{\omega_{\bf q}^{2}}
{\omega^{2}-\omega_{\bf q}^{2}}
\label{g33}
\end{equation}
where $\omega_{\bf q}^{2}=m_{\bf q}/\chi_{\bf q}$.
Let us note, that Eq. (\ref{g33}) with  expressions of $\chi_{\bf q}$
and $m_{\bf q}$ derived in the Appendix [see Eqs. (\ref{A16}) and
(\ref{A17})] reproduces the result for the spin susceptibility
obtained for the $t-J$ model in Ref.~\cite{shi}
by KY's theory ~\cite{kon} which is essentially
self-consistent MFL approximation.
\section{Self-consistency of the problem}
The equations (\ref{g19}),(\ref{g27}), and (\ref{g28})
are the self-consistent integral equations for dynamic
spin susceptibility which is obtained by using
only mode coupling approximation.
These equations should be solved numerically by iteration
procedure. The static spin susceptibility at each iteration
step should be calculated by Eq. (\ref{A4}) with $M({\bf q},\omega)$
and $\chi_{\bf q}(\omega)$ from the preceding iteration.
However some ansatz for $\chi_{\bf q}(\omega)$ as the starting point
of iteration procedure should be defined. Moreover we need to know
the hole spectral function entering into Eq. (\ref{g27})
for the memory function.

According to well known results for hole spectral function
obtained within $t-J$ model~\cite{dag} $A_{\bf k}(\omega)$
can be modeled as
\begin{equation}
A_{\bf k}(\omega)=Z_{\bf k}\delta(\omega+\mu-\varepsilon_{\bf k})+
A^{inc}_{\bf k}(\omega),
\label{r1}
\end{equation}
where $Z_{\bf k}$ is the quasiparticle weight for the excitations with the
dispersion $\varepsilon_{\bf k}$ in a narrow band of the order $J$.
The second part $A_{\bf k}^{inc}(\omega)$
is due to the diffusive motion of holes in a broad band with bandwidth $2W$
(of order $8t$ for 2D square lattice). We model it as
\begin{equation}
A_{\bf k}^{inc}=N_{inc}\theta(W-|\omega+\mu|),
\label{r2}
\end{equation}
where $N_{inc}$ is the density of state for the incoherent continuum
and it is coupled to $Z_{\bf k}$ by the sum rule
\begin{equation}
\frac{1}{N}\sum_{\bf k}\int_{-\infty}^{\infty}d\omega A_{\bf k}(\omega)=
\langle X_{i}^{00}+X_{i}^{\sigma\sigma}\rangle=1-\frac{n}{2}.
\label{r3}
\end{equation}
By using Eq.(\ref{r1}) the contribution from the hole coherent motion
to the imaginary part of the memory function can be expressed as
\begin{equation}
\rm{Im}M_{t}^{c-c}({\bf q},\omega)=\frac{\pi}{N}
\sum_{\bf k}t_{{\bf k}{\bf q}}^{2}
Z_{\bf k}Z_{{\bf k}-{\bf q}}
\frac{n(\varepsilon_{{\bf k}})-n(\varepsilon_{{\bf k}-{\bf q}})}
{\omega}\delta(\varepsilon_{\bf k}-\varepsilon_{{\bf k}-{\bf q}}-\omega)
\label{r4}
\end{equation}

To evaluate the second term in the memory function (\ref{g28})
as the starting point for $\chi_{\bf q}(\omega)$ one can use
the MFL expression (\ref{g33}),  with $m_{\bf q}$
 and $\omega_{\bf q}$ defined by (\ref{A8}) and
(\ref{A16}), respectively. As a result we obtain
\begin{equation}
\rm{Im}M_{J}({\bf q},\omega)=\frac{\pi}{2N}
\sum_{\bf k}B_{{\bf k}{\bf q}}\{P_{{\bf k}{\bf q}}(\omega)+
P_{{\bf k}{\bf q}}(-\omega)\}
\label{r5}
\end{equation}
where
\begin{equation}
B_{{\bf k}{\bf q}}=J_{{\bf k}{\bf q}}^{2}\frac{m_{\bf k}m_{{\bf k}-{\bf q}}}
{\omega_{{\bf k}}\omega_{{\bf k}-{\bf q}}},
\label{r6}
\end{equation}
is an effective vertex function and
\begin{equation}
P_{{\bf k}{\bf q}}(\omega)=\Biggl\{\frac{N(\omega_{{\bf k}})-N(\omega_{{\bf k}-{\bf q}})}
{\omega}\delta(\omega_{\bf k}-\omega_{{\bf k}-{\bf q}}-\omega)-
\frac{1+N(\omega_{{\bf k}})+N(\omega_{{\bf k}-{\bf q}})}
{\omega}\delta(\omega_{\bf k}+\omega_{{\bf k}-{\bf q}}-\omega)
\Biggr\}.
\label{r7}
\end{equation}

Eqs.(\ref{r4}) and Eq.(\ref{r5}) can be considered as the first iteration
for the memory function. The hole parameters entering into expressions
(\ref{A8}) and (\ref{A16}) for $m_{\bf q}$  and
$\omega_{\bf q}$ can be calculated from the hole spectral function
(\ref{r1}). Whereas
$\chi_{1}$ and $\chi_{2}$ defined by Eqs. (\ref{A10}) and (\ref{A18})
should be evaluated self-consistently from the dynamic spin
susceptibility (\ref{g33}).
By using the above expressions  (\ref{r4}) and (\ref{r5})
for $\rm{Im}M({\bf q},\omega)$ and the dispersion relation
(\ref{g29}) the dynamic spin susceptibility within
the first iteration can be calculated from Eq.(\ref{g19}).

Using the obtained
results one can evaluate the spin fluctuation part of
the memory (\ref{g28}) and the static spin susceptibility
(\ref{A4})-(\ref{A6}) for the next iteration procedure.
The iteration procedure should be continued until
the convergency will be reached.

\section{Summary}

To summarize, based on the $t-J$ model and memory function approach we
have derived a general representation for dynamic spin-susceptibility
(\ref{g19}) in terms of the memory function (\ref{g20}).
Our approach is formulated in terms of HO's and therefore the constraint
of no doubly occupancy is rigorously preserved.
The memory function is calculated by using the equation of motion method
for two-time retarded GF's~\cite{zub} within the mode coupling approximation
(\ref{g26}-\ref{g28}).
The two contributions to the memory function is obtained. The first
one (\ref{g27}) comes from the itinerant hole subsystem
and is due to the kinematical
interaction. The second one (\ref{g28}) comes from the localized
interacting spin subsystem.
In the limit of small concentration of doped holes the latter one gives
the main contribution which describes spin dynamics characteristic for
the Heisenberg model. Whereas in the opposite limit
of large hole concentration particle-hole excitations characteristic
to the itinerant magnetism give the main contribution to spin
dynamics. We have shown that in the paramagnetic phase there are two regimes
in the spin dynamics. In the hydrodynamic limit
($q\rightarrow 0$, $ \omega\rightarrow 0$) the spin susceptibility
(\ref{g31}) describes diffusion spin dynamics with the diffusion
coefficient (\ref{g30}), which has essentially two contributions.
While in the high-frequency limit
($\omega\rightarrow \infty$) spin-wave-like excitations described by
Eq. (\ref{g33}) are observed. Their dispersion, Eq. (\ref{A16}),
obtained in the mode coupling like approximation for the equal time
correlation function
(\ref{A14})
recovers the earlier MFL result~\cite{shi}
obtained within the KY's ~\cite{kon}theory.

To compare our results with that obtained by diagrammatic methods we would
like to point out that our approach, based on the general representation
for the spin susceptibility (\ref{g19}), is equivalent to summation
of infinite series of diagrams generated by the memory function (\ref{g20}).
The latter one, being calculated in the mode coupling approximation
,Eqs. (\ref{g24}) and (\ref{g25}), can be
schematically represented by two loop-diagrams:
the first one of order $t^{2}$ due to the particle-hole loop and
the second one of order $J^{2}$ due to the spin fluctuation loop.
In Ref.~\cite{onu} all the contributions in the denominator
of the Larkin equation are proportional to $J$ and therefore
disappears in the limit $J=0$ ($U\rightarrow \infty$).
While in our approach contribution due to the first loop
(for which the kinematical interaction is responsible)
remains. Whereas, in Ref. \cite{izu} the
spin fluctuation contribution given by our second loop is neglected while
several other diagrams
beyond our simple one-loop diagram
due to the kinematical interaction are
taken into account.

At present time it is difficult to justify any of discussed scheme,
including our mode coupling approximation. To check the validity of our
approximation one has to solve numerically self-consistent equations
and compare the obtained results with the
experimental data. This will be done in a forthcoming publication.

\acknowledgments

Financial supports by the Russian
Foundation for Fundamental Researches Grant No 96--02--17527, and
the INTAS--RFBR Program Grant No 95--591 are acknowledged.
 Partial financial supports by NREL, Subcontract  No. AAX-6-16763-01,
by the Russian State Program ``High-Temperature Superconductivity'',
 Grant No 95056, and  the Heisen\-berg-Landau Program of BLTP, JINR,
 are also acknowledged.

redpajama_set_name: RedPajamaArXiv


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text:
"""Google namespace package."""

# pylint:disable=g-import-not-at-top
try:
  import pkg_resources
  pkg_resources.declare_namespace(__name__)
except ImportError:
  import pkgutil
  __path__ = pkgutil.extend_path(__path__, __name__)