text:
\section{Introduction}

In spite of the great success of the quark model~\cite{DeRujula:1975qlm},
its connection with quantum chromodynamics (QCD) is not yet clear,
and to clarify the relation between these theories is one of the most important problems in hadron physics.
A significant difference between them is the main dynamical degrees of freedom: while QCD is formulated with current quarks and gluons, the quark model is described only with the massive  constituent quarks.
The other significant difference would be the symmetries they possess.
QCD has local color $\mathrm{SU}(3)$ symmetry, whereas the quark model only has global color $\mathrm{SU}(3)$ symmetry reflecting the absence of dynamical gluons.
This suggests that the quark model is a low-energy effective theory of QCD in some gauge.

Then, what gauge corresponds to the quark model?
Here, we need not respect full Lorentz symmetry,
since the nonrelativistic quark model has only the spatial-rotation symmetry.
We consider that gauge to be the Coulomb gauge.
There are several reasons for this choice.
First, the Coulomb gauge leaves global color $\mathrm{SU}(3)$ symmetry at each time slice, which might correspond to the global color symmetry in the quark model.
Second, the Coulomb gauge is globally defined by minimizing spatial gauge-field fluctuations,
and therefore one expects only a small fluctuation
of the spatial gluon field, which might explain the absence of dynamical gluons in the quark model.
Third, in the Coulomb gauge, the temporal gauge field $A_0$
is no more dynamical but appears as a potential for quarks,
which might give the static potential in the quark model.
Several researchers have already studied the relation between the quark model and Coulomb gauge QCD~\cite{Szczepaniak:2001rg}.

We investigate the relation between the quark model and Coulomb gauge QCD using gauge configurations
generated in SU(3) lattice QCD.
The organization of this paper is as follows.
In Sec.~\ref{sec:Coulombgauge}, we briefly review
QCD in the Coulomb gauge.
In Sec.~\ref{sec:A0projection}, we propose
$\vec{A} = 0$ projection, i.e.,
removal of spatial gluons from lattice gauge configurations in the Coulomb gauge,
and investigate the static inter-quark potential and hadron masses.
In Sec.~\ref{sec:eigenmodeprojection}, we propose a generalization of the $\vec{A} = 0$ projection in the Coulomb gauge utilizing the Faddeev-Popov eigenmodes.
In Sec.~\ref{sec:hadron_mass}, we apply this  projection to light hadron and glueball masses.
Section~\ref{sec:summary} is devoted to Summary and Conclusion.
This paper is based on Ref.~\cite{Ohata:2022iqm}.

\section{Coulomb gauge QCD} \label{sec:Coulombgauge}
We briefly review Coulomb gauge QCD, which
is locally defined as
$\partial_i A_{s,i}^a = 0$ for the gluon field $A_{s,\mu}=A_{s,\mu}^aT^a \in {\rm su}(N_c)$.
In the Coulomb gauge,
the spatial gluon fields $A_{i}^a$ are canonical variables and behave as dynamical variables,
whereas the temporal gluon field $A_0^a$
just behaves as a potential field.
The global definition of the Coulomb gauge is to minimize
\begin{equation}
R_{\mathrm{C}}[A] \coloneqq \int dt~d^3s \sum_{i,a}~ [A_{s,i}^a(t)]^2
\end{equation}
under the gauge transformation,
which satisfies the local Coulomb gauge condition.
In fact, the gauge fluctuation of the spatial gluon field is strongly suppressed in the Coulomb gauge.

Thus, in the Coulomb gauge,
spatial gluons are forced to be minimized and
the temporal gluon just provides a potential.
This situation might be preferable to match
QCD and the quark model,
since the quark model only has quark degrees of freedom and an inter-quark potential.

In the path-integral formalism, the generating functional of the Yang-Mills (YM) theory
in the Coulomb gauge is expressed by
\begin{equation}
Z = \int DA\, e^{iS[A]}~\delta(\partial_i A_i^a)~{\rm Det}(D_i\partial_i)
\end{equation}
with the YM action $S[A]$.
There appears the Faddeev-Popov (FP) operator,
\begin{equation}
M^{ab} \coloneqq D_i^{ab}\partial_i =\partial_i^2\delta^{ab}+gf^{abc}A^c_i \partial_i,
\label{eq:continuumFP}
\end{equation}
as a weight of the gauge orbital in the Coulomb gauge.
This FP operator is one of the key operators in the Coulomb gauge,
and its inverse gives the propagator of the FP ghost field.

In lattice QCD, the gauge degrees of freedom is described by the link variable
$U_{s,\mu} \coloneqq e^{iagA_{s,\mu}} \in {\rm SU}(N_c)$, where $g$ is the gauge coupling and $a$ the lattice spacing, and the global definition of the Coulomb gauge is to maximize
\begin{equation}
R_{\mathrm{C}} [U] \coloneqq \sum_{t,s,i} {\rm Re}~
{\rm Tr} U_{s,i}(t) \label{eq:Coulomb_def}
\end{equation}
under the gauge transformation.
This global definition leads to the local gauge condition
$\partial^B_i {\cal A}_{s,i} = 0$,
where $\partial^B$ denotes the backward derivative and
\begin{equation}
{\cal A}_{s,i} \coloneqq  \frac{1}{2iag}\{U_{s,i}-U_{s,i}^\dagger\}\bigg{|}_{\rm traceless} \in {\rm su}(N_c)
\end{equation}
goes to the original gluon field $A_i(s)$ in the continuum limit.

In lattice QCD in the Coulomb gauge, the generating functional of the gauge sector is written by
\begin{equation}
Z= \int DU\, e^{-S[U]}~ \delta(\partial_i {\cal A}_i^a)~ {\rm Det}(M),
\end{equation}
where the FP operator in the Coulomb gauge takes the form~\cite{Iritani:2012bc} of
\begin{equation}
M_{x,y}^{a,b} = \sum_{i} A_{x,i}^{a,b} \delta_{x,y} -
B_{x,i}^{a,b} \delta_{x + \hat{i}, y} - C_{x,i}^{a,b} \delta_{x - \hat{i}, y},
\label{eq:FPlattice}
\end{equation}
with
\begin{align}
\!\!\!\! A_{x,i}^{a,b} = {\rm Re} {\rm Tr}[\{T^a, T^b\} ( U_{x,i} + U_{x - \hat{i},i})],~
B_{x,i}^{a,b} = 2 {\rm Re} {\rm Tr}[T^b T^a U_{x,i}],~
C_{x,i}^{a,b} = 2 {\rm Re} {\rm Tr}[T^a T^b U_{x - \hat{i},i}],\!
\end{align}
at each time slice,
which leads to Eq.~(\ref{eq:continuumFP}) in the continuum limit.
Note that $M$ is a real symmetric matrix, i.e.,
$M^{a,b}_{x,y}=M^{b,a}_{y,x} \in {\bf R}$,
and hence its eigenvalues $\lambda_n$ are real.

In the Coulomb gauge, this FP operator is a key quantity to control the gauge-orbital weight,
and has been studied in the context of
the Gribov horizon~\cite{Gribov:1977wm,Zwanziger:1995cv},
the instantaneous color-Coulomb potential~\cite{Zwanziger:1995cv,Zwanziger:1998ez,Szczepaniak:2001rg,Zwanziger:2002sh},
and a confinement scenario of the gluon-chain picture~\cite{Greensite:2001nx,tHooft:2002pmx}.

\section{Lattice QCD simulation and $\vec{A} = 0$ projection} \label{sec:A0projection}
We perform SU(3) quenched lattice QCD calculation at $\beta = 6.0$ on a $L_s^3 \times L_t = 16^3 \times 32$ lattice.
We impose periodic boundary conditions for link variables in all directions.
We generate 500 gauge configurations, which are picked up every
$500$ sweeps after a thermalization of $5000$ sweeps.
For these gauge configurations, we perform Coulomb gauge fixing by maximizing Eq.~(\ref{eq:Coulomb_def}) under the SU(3) gauge transformation.
Thus, we obtain representatives of the QCD vacuum in the Coulomb gauge.

The static inter-quark potential is one of the most fundamental constituents in the quark model.
In QCD, it can be calculated from correlator of the Polyakov loops.
Since the Polyakov loop is defined only by temporal gauge fields, the static quark-antiquark potential is independent of spatial gauge fields in the gauge configurations.
To see this, we define $\vec{A} = 0$ projection as a simple removal of spatial gluons in the generated gauge configurations in the Coulomb gauge,
and apply it to the static quark-antiquark potential.
Figure~\ref{fig:qqbar_pot} shows the static  quark-antiquark potentials calculated from Wilson loops, evaluated from the original gauge configurations and $\vec{A} = 0$ projected ones in the Coulomb gauge.
\begin{figure}[htb]
\begin{center}
\includegraphics[width=0.5\linewidth]{qqbar_pot.pdf}
\end{center}
\vspace{-0.6cm}
\caption{\label{fig:qqbar_pot}
The static quark-antiquark potentials evaluated from the original configurations (black) and $\vec{A} = 0$ projected ones in the Coulomb gauge (red).
The black and red curves are the fit results with the Cornell potential $V(r) = -A / r + \sigma r + \mathrm{const}$.
}
\end{figure}
They agree very well in the whole distance region as expected.
In the quark model, the inter-quark potential is introduced by hand. In lattice QCD in the Coulomb gauge, we can keep the original static inter-quark potential by just leaving the temporal gauge fields unchanged.

Using the $\vec{A} = 0$ projection
in the Coulomb gauge,
we next investigate hadron masses
to see the role of spatial gluons,
which gives some hadron-mass splitting
via the color-magnetic interactions
in the quark model.
Since hadron masses are not purely static quantities, their values under the $\vec{A} = 0$ projection are non-trivial.
We use the clover fermion ($\mathcal{O}(a)$ improved Wilson fermion) with a non-perturbatively determined clover coefficient $c_{\mathrm{SW}} = 1.769$~\cite{Luscher:1996ug}.
We consider the light hadrons of the pion, rho meson, nucleon, and delta baryon.
We extract pion mass $m_\pi$ and rho meson mass $m_\rho$ from correlators defined as
\begin{align}
C(t) = \sum_{\vec{x}} M^{\mathrm{ud}}(\vec{x}, t) M^{\mathrm{ud}}(\vec{0}, 0)^\dag, \quad
M^{\mathrm{ud}} =
\begin{cases}
\overline{u} \gamma_5 d & \text{for pion ($\pi^-$)}, \\
\overline{u} \gamma_i d & \text{for rho meson ($\rho^-$)}.
\end{cases}
\end{align}
For nucleon mass $m_{\mathrm{N}}$ and delta baryon mass $m_{\Delta}$, we use correlators
\begin{align}
\!\!
C(t) = \Gamma_{\alpha \beta} \sum_{\vec{x}} B^{\mathrm{udu}}_{\alpha}(\vec{x},t) \overline{B}_{\beta}^{\mathrm{udu}}(\vec{0},0), \quad
B^{\mathrm{udu}} =
\begin{cases}
\epsilon^{abc} ((u^{\mathrm{T}})^a C \gamma_5 d^b) u^c \\
\qquad \qquad \qquad \text{for nucleon (proton)}, \\
\epsilon^{abc} \{
2((u^{\mathrm{T}})^a C \gamma_i d^b) u^c
+ ((u^{\mathrm{T}})^a C \gamma_i u^b) d^c
\} \!\!\!\! \\
\qquad \qquad \qquad \text{for delta baryon ($\Delta^+$)}.
\end{cases}
\end{align}
Here $C = \gamma_0 \gamma_2$ is the charge conjugation matrix, and we set $\Gamma = (1 \pm \gamma_0)$ to extract components proportional to these parity projection operators.

Figure~\ref{fig:hadron_masses}~(a) shows light hadron mass measurement from the original gauge configuration.
For each hoppoing parameter $\kappa$ and sector, hadron mass is obtained from single cosh / exponential fit to the correlation function.
From linear chiral extrapolations of $m_{\pi}^2$ and $m_{\rho}$,
the physical hopping parameter and the lattice spacing are determined so that $m_{\pi} = 0.14 {\rm GeV}$ and $m_{\rho} = 0.77 {\rm GeV}$.
The lattice spacing is found to be $a = 0.1051(15) {\rm fm}$.
Nucleon and delta baryon masses are found to be $m_{\mathrm{N}} = 1.050(24) {\rm GeV}$ and $m_{\Delta} = 1.334(31) {\rm GeV}$,
which are consistent with a quenched lattice QCD simulation with a similar lattice setup~\cite{JLQCD:2002zto}.
\begin{figure*}[htb]
\includegraphics[width=0.245\linewidth]{original.jpg}
\includegraphics[width=0.245\linewidth]{projected.jpg}
\includegraphics[width=0.245\linewidth]{projected1.jpg}
\includegraphics[width=0.245\linewidth]{projected2.jpg}
\caption{\label{fig:hadron_masses}
Hadron mass measurement (a) from the original gauge configuration;
(b) under the $\vec A$ = 0 projection in the Coulomb gauge;
(c) under the eigenmode projection with 5 \% low-lying FP eigenmodes;
(d) under the eigenmode projection with 95 \% high-lying FP eigenmodes.
}
\end{figure*}

Figure~\ref{fig:hadron_masses}~(b) shows light hadron mass measurement under the $\vec{A} = 0$ projection.
Here we assume that the lattice spacing is the same as the one obtained from the original gauge configuration because the static quark-antiquark potential is unchanged.
The physical hopping parameter is determined so that $m_{\pi} = 0.14 {\rm GeV}$.
Rho meson, nucleon, and delta baryon masses are found to be $m_{\rho} = 0.409(17) {\rm GeV}, m_{\mathrm{N}} = 0.607(44) {\rm GeV}$, and $m_{\Delta} = 0.658(49) {\rm GeV}$, respectively under the $\vec{A} = 0$ projection.
The overall decrease of hadron masses suggests a constituent quark with smaller mass of $m_{\mathrm{Q}} \simeq 0.2 {\rm GeV}$.

Interestingly, we find that nucleon and delta baryon masses are almost degenerate under the $\vec{A} = 0$ projection.
Here, we consider the physical meaning of the $\vec{A} = 0$ projection.
Under the $\vec{A} = 0$ projection,
while color-electric fields can remain,
color-magnetic fields
$H_i^a=\epsilon_{ijk}(\partial_j A_k^a
-\partial_k A_j^a
-g f^{abc}A_j^b A_k^c)$
are inevitably zero, and therefore
color-magnetic interactions vanish.
Since only the color-magnetic interactions are spin-dependent for static systems in QCD,
mass splitting between different spin states are universally expected to vanish or to decrease under the $\vec{A} = 0$ projection.
This correspondence between
color-magnetic interactions and
spin-dependent hadron mass splitting
seems consistent with the standard quark-model picture,
since the $\mathrm{N}-\Delta$ mass splitting is generated
by the color-magnetic interactions in the quark model.

\section{A generalization of the $\vec{A} = 0$
projection in the Coulomb gauge} \label{sec:eigenmodeprojection}

To investigate the role of spatial gluons in the Coulomb gauge quantitatively, we generalize the $\vec{A} = 0$ projection so as to eliminate the spatial gluons  contribution continuously.
To this end, we utilize the Faddeev-Popov (FP)
operator $M$ and consider expansion of the spatial gluon fields in terms of its eigenmodes.
Roughly, the FP operator defined by Eq.~(\ref{eq:continuumFP})
resembles the Laplacian in the Coulomb gauge,
where spatial gluon amplitude is fairly suppressed,
and low-lying FP modes correspond to low-energy components.
In lattice QCD, the FP operator $M$
is expressed as a $8L_s^3 \times 8L_s^3$ matrix $M_{IJ}=M_{x,y}^{a,b}$ in Eq.~(\ref{eq:FPlattice}),
with the index $I=(x,a)$ and $J=(y,b)$.

Since the FP operator is a real symmetric matrix, its eigenmodes $\psi_n$ satisfying
\begin{equation}
M \psi_n = \lambda_n \psi_n \quad (n = 1, 2, \dots, 8L_s^3)
\end{equation}
can be taken real and normalized eigenvectors $\psi_n(t)$ at each time $t$ form a complete set
\begin{equation}
\sum_{n}\psi_{n,s}^a(t)~ \psi_{n,s^{\prime}}^{a^{\prime}}(t) = \delta_{s,s^\prime} ~\delta^{a, a^{\prime}}.
\end{equation}
With these eigenvectors, spatial gluon fields at each time $t$ can be uniquely expanded as
\begin{align}
A_{s,i}^a(t) = \sum_{n = 1}^{8 L_s^3} c_{n,i}(t) ~\psi_{n,s}^a(t), \qquad
c_{n,i}(t) \coloneqq \sum_{s,a} A_{s,i}^a(t) ~\psi_{n,s}^a(t).
\end{align}
Among the $8L_s^3$ eigenmodes, we consider a restriction of these modes, and define FP eigenmode projection
for spatial gluon fields $A_{s,i}(t)$
as a replacement by
\begin{align}
A_{s,i}^{a,\mathrm{projected}}(t)
=\sum_{n \in S} c_{n,i}(t)~\psi_{n,s}^a(t)
\end{align}
in the Coulomb gauge.
Here, $S$ denotes a subset of the whole set $\{1,\dots, 8L_s^3\}$.
In this projection, the temporal gluon $A_4$
is unchanged.
The eigenmode projection with whole set $S = \{1, \dots, 8L_s^3\}$ gives the original gauge configuration, whereas
the projection with no eigenmode ($S = \phi$) becomes the  $\vec{A} = 0$ projection.
Then, we can connect the $\vec{A} = 0$ projected configuration with the original one by smoothly changing the subset $S$.

In this study, we only consider eigenmode projections with $N_{\mathrm{low}}$ low-lying or $N_{\mathrm{high}}$ high-lying eigenmodes.
Specifically, we set
\begin{align}
S_{\mathrm{low}} = \{1, \dots, N_{\mathrm{low}}\}, \qquad
S_{\mathrm{high}} = \{8L_s^3 - N_{\mathrm{high}} + 1, \dots, 8L_s^3\}
\end{align}
for eigenmodes which are ordered as
$\lambda_1 \le \lambda_2 \le \dots \le \lambda_{8L_s^3}$.
For each gauge configuration and time $t$, we calculate 1638 low-lying and high-lying eigenmodes for the FP operator by using the Krylov-Schur solver implemented in SLEPc~\cite{Hernandez:2005:SSF}.
It is found that the 1638-th smallest eigenvalue corresponds to the low-lying eigenmode of about $(2 {\rm GeV})^2$.

Note that, unlike the Fourier expansion~\cite{Yamamoto:2008am,Yamamoto:2008ze},
the current expansion has no practical eigenvalue degeneracy except for the trivial eight zero-modes,
and one can smoothly connect the $\vec{A} = 0$ projected gauge configuration with the original one.

\section{hadron and glueball masses under the eigenmode projection} \label{sec:hadron_mass}
We calculate light hadron masses under the eigenmode projection.
Figure~\ref{fig:hadron_masses}~(c) and (d) show light hadron masses under the eigenmodes projection with 5\% low-lying and with 95\% high-lying eigenmodes, respectively.
Figure~\ref{fig:hadron_mass} shows
hadron masses under the eigenmode projection plotted against the number of low-lying or high-lying FP eigenmodes.
Some of these results are listed in Table~\ref{table:hadron_mass}.
\begin{table}[htb]
\caption{
Hadron masses under the eigenmode projection with low-lying FP eigenmodes.
}
\begin{center}
\begin{tabular}{cccc}
\hline
num. of low-lying FP modes & $m_{\rho}$ [GeV] & $m_{\mathrm{N}}$ [GeV] & $m_{\Delta}$ [GeV] \\
\hline
0 (0 \%)          & 0.409(17)    & 0.607(44) & 0.658(49) \\
8 (0.02 \%)       & 0.569(23)    & 0.788(86) & 0.887(68) \\
33 (0.10 \%)      & 0.675(25)    & 0.984(68) & 1.122(77) \\
164 (0.50 \%)     & 0.772(20)    & 1.045(35) & 1.306(50) \\
328 (1.00 \%)     & 0.785(21)    & 1.051(36) & 1.372(54) \\
$8L_s^3$ (100 \%) & 0.77         & 1.050(24) & 1.334(31) \\
\hline
\end{tabular}
\end{center}
\label{table:hadron_mass}
\end{table}

\begin{figure*}[htb]
\includegraphics[width=\linewidth]{hadron_mass_total.pdf}
\caption{\label{fig:hadron_mass}
Hadron masses under the eigenmode projection in GeV unit plotted against the number of low-lying or high-lying FP eigenmodes in the projection.
Pion mass $m_\pi = 0.14 {\rm GeV}$ is used to set the physical hopping parameter for each measurement.
The lattice spacing $a = 0.1051(15) {\rm fm}$ is used to set the scale.
The solid and dashed lines are connecting adjacent data points for visibility.
}
\vspace{-0.5cm}
\end{figure*}

We find monotonically increasing behaviors in Fig.~\ref{fig:hadron_mass}.
The original light hadron masses are approximately reproduced with only one percent of low-lying eigenmodes.
Interestingly, Figs.~\ref{fig:hadron_masses} (c) and (d) are respectively very similar
with Figs.~\ref{fig:hadron_masses} (a) and (b) in Sec.~\ref{sec:A0projection},
except for the values of hopping parameter $\kappa$.
These results indicate an important role of low-lying eigenmodes on light hadron masses.
From Fig.~\ref{fig:hadron_mass} and Table~\ref{table:hadron_mass},
we also find that the $\mathrm{N}-\Delta$ mass splitting becomes evident when projected with more than 0.1 \% low-lying eigenmodes.

Finally, to go beyond the quark model,
we investigate $0^{++}$ and $2^{++}$ glueball masses
in the FP eigenmode projection in the Coulomb gauge.
The mass splitting of $0^{++}$ and $2^{++}$ glueballs
are also considered to be due to the color-magnetic interaction.

These glueball masses can be extracted from correlators
\begin{align}
C(t) = \phi(t) \phi(0), \qquad
\phi(t) =
\begin{cases}
\sum_{\vec{x}} {\rm Re}~{\rm tr}(P_{12} + P_{23} + P_{31})(\vec{x}, t) & \text{for $0^{++}$}, \\
\sum_{\vec{x}} {\rm Re}~{\rm tr}(P_{12} - P_{13})(\vec{x}, t) & \text{for $2^{++}$},
\end{cases}
\label{eq:glueball_corr}
\end{align}
where $P_{ij}$ is the plaquette in $i-j$ plane and the vacuum contribution must be subtracted from the correlator for $0^{++}$ glueball mass~\cite{Ishikawa:1982tb}.
For the glueball calculation, although 500 gauge configurations might not be enough statistically  \cite{Teper:1987wt},
we calculate approximate $0^{++}$ and $2^{++}$ glueball masses under the eigenmode projection with low-lying eigenmodes,
from single exponential fits to the correlators~(\ref{eq:glueball_corr}).
Those results are summarized in Fig.~\ref{fig:glueball_mass}.
\begin{figure*}[htb]
\begin{center}
\includegraphics[width=1.0\linewidth]{glueball_mass_total.pdf}
\end{center}
\vspace{-0.25cm}
\caption{\label{fig:glueball_mass}
Glueball masses under the eigenmode projection in GeV unit plotted against the number of low-lying FP eigenmodes in the projection.
}
\end{figure*}

We also show glueball mass mesurement under the eigenmode projection with 0.1 \% low-lying eigenmodes in Fig.~\ref{fig:glueball_mass_only_small_33}.
In the case of projection with high-lying eigenmodes,
the correlation functions are too noisy that we can not extract the masses at all.

\begin{figure*}[htb]
\begin{center}
\includegraphics[width=0.8\linewidth]{glueball_mass_only_small_33.pdf}
\end{center}
\vspace{-0.5cm}
\caption{\label{fig:glueball_mass_only_small_33}
Glueball mass measurement under the eigenmode projection with 0.1 \% low-lying FP eigenmodes.
Correlation functions are normalized such that $C(0) = 1$.
}
\end{figure*}

From Fig.~\ref{fig:glueball_mass}, it seems that $0^{++}$ and $2^{++}$ glueball masses are approximately degenerate near the $\vec{A} = 0$ projection.
This can be also seen from Fig.~\ref{fig:glueball_mass_only_small_33}, where correlation functions are very alike.
They approximately converge to the original values with just one percent of low-lying eigenmodes.
We also find that the $0^{++}-2^{++}$ glueball mass splitting becomes evident when projected with more than 0.1 \% low-lying eigenmodes.
Thus, we obtain similar results also in the case of glueball masses.

\section{Summary and Conclusion} \label{sec:summary}

In this paper, aiming at the relation between QCD and the quark model, we have investigated the role of spatial gluons for hadron masses in the Coulomb gauge.
In the $\vec{A} = 0$ projection,
where all the spatial gluon fields are set to zero,
we have found that nucleon and delta baryon masses are almost degenerate. This suggests that
the N-$\Delta$ mass difference arises from the color-magnetic interactions, which is consistent with the quark model picture.
Next, as a generalization of this projection,
we expanded spatial gluon fields in terms of Faddeev-Popov eigenmodes
and left only some partial components.
We have found that the original ${\rm N}-\Delta$ and $0^{++}-2^{++}$ glueball mass splittings are almost reproduced only with 1 \% low-lying components.
This suggests that low-lying color-magnetic interaction leads to the hadron mass splitting.

Our study suggests a possibility that the quark model can be derived from Coulomb gauge QCD by a reduction of high-lying spatial gluons above $1.3 {\rm GeV}$.
Also, a QCD-based constituent gluon model
might be formulated from Coulomb gauge QCD with the reduction of high-lying spatial gluons, and its combination with the quark model might describe wide category of hadrons including glueballs and hybrids.

H.O. is supported by a Grant-in-Aid
for JSPS Fellows (Grant No.21J20089).
H.S. is supported by a Grants-in-Aid for
Scientific Research [19K03869] from JSPS.
This work was in part based on Bridge++ code~\cite{Ueda:2014rya}.
We used SLEPc~\cite{Hernandez:2005:SSF} to solve eigenvalue problems.
The numerical simulations was carried out on Yukawa-21 at YITP, Kyoto University.

redpajama_set_name: RedPajamaArXiv


text:
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In a fast-paced and action-packed narrative, Navy SEAL commander Rorke Denver tackles the questions that have emerged about America's past decade at war—from what makes a hero to why we fight and what it does to us. Heroes are not always the guys who jump on grenades. Sometimes, they are the snipers who decide to hold their fire, the wounded operators who find fresh ways to contribute, or the wives who keep the families together back home. Even a SEAL commander—especially a SEAL commander—knows that. But what's a hero, really? What do we have a right to expect from our heroes? How should we hold them accountable? Amid all the loose talk of heroes, these questions are seldom asked. As a SEAL commander, Rorke Denver is uniquely qualified to answer questions about what makes a hero or a leader, why men kill, how best to serve your country, how battlefield experiences can elevate us, and most importantly, why we fight and what it does for and to us. In Worth Dying For, Denver tackles many of these issues by sharing his personal experiences from the forefront of war today. Denver applies some of his SEAL-sense to nine big-picture, news-driven questions of war and peace, in a way that appeals to all sides of the public conversation. By broadening the issues, sharing his insights, and achieving what civilian political leaders have been utterly unable to, Denver eloquently shares answers to America's most burning questions about war, heroism, and what it all means for America's future.
By Rorke Denver and Ellis Henican
9781501124112, titled "Worth Dying for: A Navy Seal's Call to a Nation" | Howard Pub Co, April 5, 2016, cover price $24.00
9781501125683, titled "Worth Dying for: A Navy Seal's Call to a Nation" | Reprint edition (Howard Pub Co, January 17, 2017), cover price $15.99
9781522642107, titled "Worth Dying for: A Navy Seal's Call to a Nation" | Mp3 una edition (Audible Studios on Brilliance audio, July 5, 2016), cover price $9.99 | About this edition: In a fast-paced and action-packed narrative, Navy SEAL commander Rorke Denver tackles the questions that have emerged about America's past decade at war—from what makes a hero to why we fight and what it does to us.
Sailor and Fiddler: Reflections of a 100-year-old Author
By Herman Wouk
9781410488626 | Large print edition (Thorndike Pr, April 20, 2016), cover price $31.99
9781501128547 | Simon & Schuster, January 5, 2016, cover price $20.00
9781501128554 | Reprint edition (Simon & Schuster, January 17, 2017), cover price $14.00
The Art of Women at War
By Eileen Rivers
9781942872634 | Regan Arts, January 17, 2017, cover price $26.95
His Father's Son: The Life of General Ted Roosevelt, Jr.
By Tim Brady
9781101988152 | New Amer Library, January 3, 2017, cover price $27.00
Tank Action: An Armoured Troop Commander's War 1944?45
By Stuart Tootal
9781474603263 | Weidenfeld & Nicolson Ltd, January 3, 2017, cover price $29.99
The Lion of Africa: The Untold Story of General Paul Von Lettow-vorbeck and the Creation of Modern Africa
By Robert Gaudi
Soe Hero: Bob Maloubier and the French Resistance
Product Description: Churchill's wartime secret agent, saboteur, the father of French combat swimmers, Robert "Bob" Maloubier, is an extraordinary man and one of the 20th century's greatest adventurers. He joined SOE aged 19 and survived 3 gunshot wounds, German prison camps, an escape from Bizerte when it was invaded by the Afrika Korps, and the assassination of Admiral Darlan Fernand Bonnier by his former high school classmate Chapel...read more
By Tania Szabó (trans)
9780750966078 | History Pr Ltd, January 1, 2017, cover price $29.95 | About this edition: Churchill's wartime secret agent, saboteur, the father of French combat swimmers, Robert "Bob" Maloubier, is an extraordinary man and one of the 20th century's greatest adventurers.
Shadow Warriors of World War II: The Daring Women of the Oss and Soe
By Greg Lewis
9781613730867 | Chicago Review Pr, January 1, 2017, cover price $26.99
Cast in Deathless Bronze: Andrew Rowan, the Spanish-american War, and the Origins of American Empire
By Donald Tunnicliff Rice
9781943665426 | West Virginia Univ Pr, December 1, 2016, cover price $79.99
9781943665433 | Reprint edition (West Virginia Univ Pr, December 1, 2016), cover price $27.99
Fighting Blind: A Green Beret's Story of Extraordinary Courage
By Ivan Castro and Jim DeFelice
9781250076540 | St Martins Pr, November 15, 2016, cover price $26.99
Eleven Months to Freedom: A German Pow's Unlikely Escape from Siberia in 1915
Product Description: Eleven Months to Freedom recounts the daring World War I escape of German midshipman Erich Killinger. Falsely accused of bombing a railway station after crashing his plane at sea, he was sentenced to life in the Sakhalin coal mines...read more
By Dwight R. Messimer
9781682470657 | Naval Inst Pr, November 15, 2016, cover price $35.00 | About this edition: Eleven Months to Freedom recounts the daring World War I escape of German midshipman Erich Killinger.
Eleanor Marx: A Life
By Rachel Holmes
9781620409701 | Bloomsbury Pub Plc USA, February 24, 2015, cover price $35.00
9780747583844 | Bloomsbury Pub Ltd, May 8, 2014, cover price $41.40
9781408852897 | Bloomsbury Pub Plc USA, November 15, 2016, cover price $23.00
The Lost Airman: A True Story of Escape from Nazi Occupied France
Product Description: The remarkable, untold story of World War II American Air Force turret-gunner Staff Sergeant Arthur Meyerowitz, who was shot down over Nazi-occupied France and evaded Gestapo pursuers for more than six months before escaping to freedom...read more
By Peter Stevens
9781592409723, titled "The Lost Airman: A True Story of Escape from Nazi-occupied France" | Reprint edition (New Amer Library, November 15, 2016), cover price $16.00 | About this edition: The remarkable, untold story of World War II American Air Force turret-gunner Staff Sergeant Arthur Meyerowitz, who was shot down over Nazi-occupied France and evaded Gestapo pursuers for more than six months before escaping to freedom.
Tough As They Come
By Gary Sinise (foreword by)
9781101904800 | Convergent, November 8, 2016, cover price $15.99
The Lion of Sabray: The Afghani Warrior Who Defied the Taliban and Saved the Life of Navy Seal Marcus Luttrell
By Patrick Robinson
9781501117985 | Touchstone Books, November 3, 2015, cover price $27.00
9781501117992 | Reprint edition (Touchstone Books, November 8, 2016), cover price $16.99
The Other Side of Infamy: My Journey Through Pearl Harbor and the World of War
By James Lund (contributor)
9781631467448 | Nav Pr, November 3, 2016, cover price $22.99
The Fleet at Flood Tide: America at Total War in the Pacific 1944-1945
By James Hornfischer
9780345548702 | Bantam Dell Pub Group, November 1, 2016, cover price $35.00
9781101889541, titled "The Fleet at Flood Tide: America at Total War in the Pacific, 1944-1945" | Unabridged edition (Random House, November 1, 2016), cover price $45.00

redpajama_set_name: RedPajamaCommonCrawl


Real HCG drops are an amazing way to lose weight quickly and keep it off. But if you get fake drops, you're out of luck. In this post I will explore how you can tell whether you are purchasing real oral HCG or fake HCG drops.
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For this 3.8 ha geomembrane capping project at Margetts Pit, Burham, Kent, Peter Baxter Associates Ltd carried out detail design, prepared and agreed a CQA Plan and provided visiting and full time CQA Supervision, as well as compliance testing during the construction period.
Sittingbourne Lorry Park Design. Peter Baxter Associates Ltd were commissioned to design the surfacing for a 3000m2 lorry park by the design and build contractor. The geotechnical design required a site investigation to establish soil type and CBR values at the Sittingbourne, Kent site, along with an estimate of storm run-off flows and the design of additional drainage pipework.
Ashford based Knapp Hicks and Partners use Peter Baxter Associates Ltd as a soil testing contractor for their building development investigations. PBA provide a quick turnaround and localised service.


Until last year, I hadn't yet farro'd. But with just one forkful of this risotto-esque farro recipe, I became a convert.
This Sweet Corn, Gouda and Farro recipe comes with high requests. It was originally devised by Jodie Rogers, the Executive Chef of Deer Valley Resort, for a Niman Ranch farmer appreciation dinner she and fellow Chef Clark Norris were invited to participate in with 5 other award winning chefs from around the country. For 1,500 dinners. That's a lot of farro.
Last year, Jodie recreated this farro recipe for a far smaller cast of characters at the Better Blog Retreat. From the food bloggers' response and request for the recipe, it was likely the dish that made the biggest impression of the night.
So what' the attraction to farro?
Like many other whole foods farro is high in nutrients and fiber. It has a nutty, crunchy bite even when cooked that makes the mellowness and adaptability of quinoa's flavorings simply whisper away in the wind. This is a hearty grain, and is the perfect solution to help convert your meaty protein lovers to a more whole grain diet. It's filling.
After making this recipe, I cooked another batch of farro to have on hand. I simply followed the package directions and boiled it in water (or stock) for 30 minutes. Perfect for lunchtime salads or soups, and yes, add it to yogurt with fruit for breakfast too.
Anything quinoa can do, farro can do too.
About the recipe: I used organic farro from Bob's Red Mill for this recipe and calls for an overnight soak in water to soften the grains and ready them for risotto-style cooking.
This recipe uses sweet corn straight from the cob. I found a few remaining cobs from harvest at the farmer's market, but if you can't find fresh, Jodie recommends air-dried corn. Or you could simply try a good brand of frozen.
A white wine is added to the veggies after their sauté and really adds to the recipe. Non-drinkers don't fret, all of the alcohol is cooked out.
Ahhh. Gouda. What could be good-a than gouda added to a recipe? Gouda is one of the ultimate melty cheeses and envelops each kernel of grain and veggie dice in only the best way possible. The bit of butter mixed in doubles the creamy factor. Heaven.
The farro is cooked just as you would risotto, with warm broth ladled into the farro mixture 1/2 cups at a time until reduced and then added more again until the farro is cooked through. Farro is done when it decides to be done, so allow for taste testing along the way.
Strain the farro, and set aside.
In a medium saucepan, bring the broth to a simmer. In a separate 10-inch skillet, heat the oil over medium heat. Add the onion, carrots, celery and garlic and sauté until transparent. Add the sweet corn and stir.
Add the wine and cook until reduced by half. Add the farro and cook for 3 minutes while stirring continuously. Add the broth 1/2 cup at a time, continuing to stir after each addition until the farro has absorbed most of the liquid and reaches al denté, about 45 minutes. Occasionally test the farro for tenderness. *Note: All of the liquid may not be used.
Remove the farro from the heat and stir in the butter, gouda and parsley. Season with salt and pepper to taste.
While restaurants and chefs have been fawning over farro for the past few years, and food bloggers are highlighting its merits and ease in the kitchen with feast-worthy recipes, too. Here are 15 more farro recipes to love forever.
A sweetened, simple dressing over oven roasted veggies makes this salad perfect for lunch and yes! Dinner too. Recipe on Baked Bree, here.
This recipe only requires one large pot and 30 minutes of your time for far-out farro bliss. Recipe on Vintage Mixer, here.
A bit of chopping, a bit of farro-ing. I could get use to this! Recipe on Lauren's Latest, here.
Now this is the kind of whole foods, stick-to-your-ribs recipe any meat eater could get behind. Recipe on Bakeaholic Mama, here.
All the flavors of Thanksgiving. This would look stellar on the t-day table. Recipe on Cookin' Canuck, here.
Sneaking in healthy ingredients to family favorite recipes is the secret to every mom's success. Recipe on Cook the Story, here.
This cornucopia of flavors cooks up in under 30 minutes. Fast and farro, just how I like it. Recipe on Completely Delicious, here.
What better way to convert the uninitiated than by adding avocado to your farro. Score one for the cook! Recipe on Reluctant Entertainer, here.
Farro on the go! What could make eating a whole grain lunch any easier? Recipe on Cookie & Kate, here.
Piled high with veggies, this gratin can go meat-free if you so desire. Me? I dig sausage so I'm keeping it as is. Recipe on Climbing Grier Mountain, here.
Is eating farro 4 days in a row overkill? Aggie thinks not. Recipe on Aggie's Kitchen, here.
I'm on a risotto ladling roll and this combo sounds fall-rific. Recipe on Love and Olive Oil, here.
Much healthier than traditional Mexican rice, this version is protein packed with flavor. Recipe on Gimme Some Oven, here.
The proof is in the porridge, farro isn't just for lunch and dinner anymore. Dessert for breakfast, everyone! Recipe on Blogging Over Thyme, here.
Now, there's no excuse not to farro. Get cooking!
I'm such a crazy farro lover! I love how nutty and chewy it is, but not overly chewy. Yummy recipe, Heidi. Love it mixed with corn!
I absolutely adore farro! (Thank you for including my porridge Heidi!). And farro risotto!! This looks like a recipe for the books! Can't wait to try it.
I love farro! And am so happy you shared your recipe (and a bunch of others) today. I can't wait to try some of these fun flavour combos!
I love farro and it's a great rice substitute, and gouda had to be my all-time favorite cheese. Looks like a fun-filled retreat!
I'm all about the farro! And I can't wait to give this recipe a try. Thanks for sharing my recipe!
This looks like a panful of comfort food! I must try this soon! A savory, gorgeous, dish!
Oh..I'm totally in love with this post!! Farro heaven. Your risotto looks absolutely incredible. Thanks for the shout out!
I absolutely adore farro and have been looking for some good farro recipes. Will definitely check these out!
Question re the sweet corn, gouda, faro recipe. You noted that the second choice of corn is air dried corn. Maybe that means something else in Deer Valley than it does where I am from. Is she talking corn that has been dehydrated in the air? So sorry if this is a silly question, but the suggestion of dehydrated corn seemed odd.
Also – in case someone cannot find farro in their grocery – spelt is essentially farro and Barley and whole wheatberries are almost identical subs – less trendy sounding, but still delicious and good.
Thanks for the clarification on the farro and barley. Great info! Yes, you could use dehydrated corn.
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text:
Home Research Topics Coronavirus Disease (COVID-19)
During the pandemic, teen summer employment hit its lowest point since the Great Recession
By Drew DeSilver
Morgan Jackson, 18, scoops ice cream while working at Beals Ice Cream in Portland, Maine, on April 26, 2018. (Shawn Patrick Ouellette/Portland Press Herald via Getty Images)
During the pandemic summer of 2020, teen summer employment in the United States plunged to its lowest level since the Great Recession, erasing a decade's worth of slow gains, according to Pew Research Center's latest analysis of federal employment data.
Fewer than a third (30.8%) of U.S. teens had a paying job last summer, as many of the places most likely to employ them – restaurants, shops, recreation centers, tourist attractions – were either shuttered entirely or had their operations severely curtailed because of the COVID-19 pandemic. In 2019, 35.8% of teens worked over the summer.
As recently as 2000, more than half (51.7%) of U.S. teens could expect to spend at least part of their summer vacation lifeguarding, selling T-shirts, dishing up soft-serve ice cream or otherwise working for pay. But the share of teens working during the summer tumbled soon after, to 29.6% in 2010 and 2011. When teens do get summer jobs these days, they're more likely to be busing tables or tending a grill than staffing a mall boutique or souvenir stand (despite an uptick in teen retail employment in 2020).
To understand what's happened to the Great American Summer Job, Pew Research Center relied on monthly employment data gathered by the federal Bureau of Labor Statistics. We specifically looked at the employment rate – or, more formally, the employment-population ratio – for 16- to 19-year-olds, which the BLS has compiled since 1948. We took the average employment rate for June, July and August of each year as our measure of summer employment.
In addition, we analyzed unpublished BLS data on industry and occupational employment among 16- to 19-year-olds. Both the industry and occupational classifications schemes were revised starting with the 2020 figures; while the reclassifications on the industry side were minor and did not affect comparability, the new occupational scheme is different enough that the 2020 data can't be compared with prior years.
We used non-seasonally adjusted data for this analysis, as teen employment normally rises sharply in the summer months and typically peaks in July.
From the late 1940s, which is as far back as the data goes, through the 1980s, teen summer employment followed a fairly regular pattern: rising during economic good times and falling during and after recessions. The teen summer employment rate fluctuated in a relatively narrow band: 46.3% (the low, in 1963) to 58% (the peak, in 1978).
That pattern began to change in the 1990s, when the teen summer employment rate didn't experience its typical bounce-back after the 1990-91 recession. Teen summer employment fell sharply starting during the 2001 recession and dropped even more sharply during and after the 2007-09 Great Recession. The teen summer employment rate edged higher throughout the 2010s but never quite returned to pre-recession levels.
The COVID-19 pandemic, and the economic restrictions imposed to combat its spread, upended the teen job market just as it did the broader job market. About 1.9 million 16- to 19-year-olds lost their jobs between February and April 2020. While there was some recovery in the ensuing months, the number of teens employed in July 2020 – what would normally be the peak month for summer jobs – fell by more than a million from July 2019.
While younger teens – 16- and 17-year-olds – are still less likely to work in the summer than their older peers, they lost jobs at a slower pace last year than did older teens (ages 18 to 19). Last summer's average employment rate for 16- and 17-year-olds was 22.3%, down 2 percentage points from 2019. But for 18- and 19-year-olds, summer employment last year averaged 40.5%, compared with 47.8% in 2019.
White teens are more likely to work in the summer, as well as during the rest of the year, than teens of other racial and ethnic backgrounds – a trend the pandemic did nothing to change. On average last summer, about a third (33.4%) of 16- to 19-year-old White teens were employed, compared with 25.8% of Hispanic teens, 25.1% of Black teens and 14.3% of Asian teens.
The decline in teen summer jobs is a specific instance of a broader long-term decline in overall youth employment, a trend that's also been observed in other advanced economies.
Besides the pandemic-specific reasons why teens might not have worked last summer, researchers have suggested multiple reasons why fewer young people are working in other summers: fewer low-skill, entry-level jobs, such as sales clerks or office assistants, than in decades past; more schools ending later in June and/or restarting before Labor Day; more students enrolled in high school or college over the summer; more teens doing volunteer community service as part of their graduation requirements or to burnish their college applications; and more students taking unpaid internships, which the Bureau of Labor Statistics doesn't count as being employed.
The types of summer jobs that teenagers are holding have changed over time, too – though last year's pandemic-related shifts obscure some of the long-term trends.
More than a third (35.1%) of the estimated 5.4 million teens who were employed last July worked in the accommodation and food services industry – restaurants, hotels and the like – compared with 31.9% in July 2019 and 22.6% in July 2000, according to BLS data. Retail, after years of decline as a summertime source of teen jobs, rebounded last summer, accounting for about a quarter (24.5%) of employed teens. The retail share had fallen from 24% in 2000 to 19% in 2019.
The construction and manufacturing sectors, which together employed about 12.6% of teens in July 2000, accounted for just 7% this past July. And arts, entertainment and recreation, which had grown steadily as a summertime employer of teens since 2000 (think of all those fairs, carnivals and community pools), slumped to 6.7% of total teen summer employment in 2020, compared with 9.3% in 2019.
Occupational (not industry) data shows that many summer job categories continue to differ markedly by sex. Last July, for example, 27.6% of working female teens had sales jobs, compared with 12.8% of male teens. Female teens were three times as likely as males to have personal care and service jobs (9.7% vs. 3.2%) and more likely to have office and administrative support jobs (11.2% of female teens vs. 7.7% of male teens). On the other hand, male teens were far likelier than female teens to have transportation and material moving jobs (17.9% vs. 5%); construction and extraction jobs (8.8% vs. 0.1%); and installation, maintenance and repair jobs (3.4% vs. 0.1%).
As the country continues to emerge from pandemic-related shutdowns and restrictions, how do things look for teen summer employment this year?
As overall job trends indicate a strengthening economy, 32.4% of 16- to 19-year-olds, or 5.3 million teens, were employed in May 2021 (not adjusting for seasonal variations). By both measures, those are the highest May employment figures for teens since 2008. An estimated 562,000 teens were unemployed, meaning they were available and actively searching for work but hadn't yet found any – a much stronger number than a year ago, when about 1.7 million teens were unemployed. The unemployment rate among those ages 16 to 19 was 9.5%, a vast improvement over the 30.7% rate recorded in May 2020.
That improvement, combined with reports of worker shortages as the country reopens, could portend a far better summer for teen jobs than last year.
Over the long term, though, the trend of fewer teens working over the summer seems likely to continue. Even though there were more working-age teens in May 2021 than in May 2000 (16.4 million vs. 15.9 million), far fewer of them were in the labor force: 5.9 million as of May, down from 8.1 million in 2000. And about 10.6 million teens, or nearly two-thirds of the total civilian non-institutional population ages 16 to 19, were outside the labor force entirely, compared with 7.8 million (49.1%) in May 2000.
Note: This is an update of a post originally published July 2, 2018.
Economy & WorkTeens & YouthUnemploymentUnemploymentCoronavirus Disease (COVID-19)COVID-19 & the Economy
Drew DeSilver is a senior writer at Pew Research Center.
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Facts are more important than ever.
The fading of the teen summer job
Where teens are finding summer jobs: More food service, less retail
Report | Aug 29, 2019
10 facts about American workers
With a potential 'baby bust' on the horizon, key facts about fertility in the U.S. before the pandemic
5 ways the U.S. workforce has changed, a decade since the Great Recession began
Teens & YouthCoronavirus Disease (COVID-19)Economy & WorkUnemploymentUnemploymentCOVID-19 & the Economy


LeanXcale is a Full SQL Full ACID distributed database that scales out from 1 to 100s of nodes thanks to its patented transactional management and query processing technology. With LeanXcale you know that it will handle any workload at any scale you may need.
LeanXcale is a Hybrid Transactional Analytical Processing (HTAP) database. This means that you do not need anymore to create and maintain complex ETL pipelines between your operational database and your data warehouse or any other analytical infrastructure. With LeanXcale HTAP capabilities your operational and analytical capabilities are solved in a single database management system. What it is more, forget about analytics over stale data, with LeanXcale you will get real-time analytics by running the analytical queries over the operational data.
Never spend a coin on unneeded resources and associated costs (clouds resources in the cloud, power & cooling on premise, 24x7 operations team, …). With LeanXcale elasticity you can now devote the exact resources you need for the current load as it evolves over time and without any disruption in the service and its quality during the dynamic reconfigurations.
Finally, you can get the best of two worlds, SQL & NoSQL, with LeanXcale thanks to its dual interface. With LeanXcale you can access your relational data via the simple and powerful SQL or through its ultra-efficient key-value interface, always with Full ACID guarantees. Its key-value interface avoids the overhead of SQL processing for simple operations and empowers you with amazing rates per core deployed.
LeanXcale database handles any load needed by modern data driven enterprises scaling out linearly to 100's of nodes in a transparent way to applications.
Traditional operational databases are the main bottleneck in enterprise IT and a huge amount of engineering and DBA hours are wasted to twist the business application and configure the database to avoid breaking the operational database (e.g. by resorting to sharding over multiple independent DBs). Other alternatives like moving to a NoSQL data store result in even higher costs in engineering and maintenance, and losing data consistency guarantees with painful consequences.
LeanXcale is an ultra-scalable Full ACID Full SQL database able to handle any load up to millions of update transactions per second scaling out linearly to 100's of nodes transparent way to applications, processing any load needed by modern data driven enterprises.
Now, companies can just focus on developing their business application and forget about the database, because with LeanXcale they know it will scale as much as they need to satisfy their requirements. No more budget wasted in engineering and DBAs due to a non-scalable operational database.
LeanXcale has been conceived as a distributed database with all its components able to scale out to many 100s of nodes.
Its patented ultra-scalable transactional management solves the bottleneck of existing operational databases. It does so by decomposing the ACID properties and scaling them out independently but in a composable manner. It can scale to many millions of update transactions per second.
Be ultra-efficient with modern hardware that is multi-core and has NUMA memory.
Scale out to 100s of nodes, terabytes of data, millions of updates per second.
Provide sub-millisecond latencies for single item operations.
Be efficient for both operational and analytical workloads.
Its distributed query engine is able to scale for both OLTP and OLAP workloads. For OLTP workloads each query engine instance can handle a subset of the client sessions. For OLAP workloads it can spread the processing across many query instances to answer analytical queries in online response times.
LeanXcale provides Real-Time Big Data Analytics blending operational and analytical capabilities in a single database.
Today companies use two different kinds of database managers for processing their data. Transactional SQL databases (On Line Transactional Processing - OLTP) manage operational data and guarantee data consistency despite failures and concurrent updates, relying on full ACID transactions. At the same time, data warehouses (On Line Analytical Processing - OLAP) are used to run analytical queries. These queries are heavy and require traversing vast amounts of data. Since OLTP and OLAP are two different database management systems, with very different compute resource profiles, data has to be copied from the OLTP database to the OLAP database in a process called Extract-Transform-Load, or ETL.
The ETL process is often too complex and costly to create and maintain, being estimated to take up to 80% of the business analytics budget. Additionally, analytics are performed over stale data, thus preventing from obtaining real-time insights what leads to a significant reduction in business agility.
LeanXcale, thanks to its ultra-scalable transactional processing system, blends operational and analytical capabilities in a single database. LeanXcale is able to process any operational workload. On top of it is able to run analytical queries over the operational data without any interference between both workloads., delivering Real-Time Big Data Analytics.
By blending both capabilities on a single database ETLs can be eliminated or highly reduced. Thus, LeanXcale enables significant reduction in costs and increments the business agility for data intensive companies.
At the transactional level, the interference between operational and analytical workloads it is avoided thanks to our multi-version concurrency control (MVCC). Our MVCC avoids interference between reads and writes by creating new versions of rows rather than updating in place.
At the query engine level, our query engine is a distributed data warehouse engine with Massive Parallel Processing (MPP) able to process analytical queries with online response times. The query engine is also able to scale out with the number of clients to process arbitrary operational workloads.
At the storage engine level, we have architected from scratch designed to be efficient for both operational & analytical workloads. It is based on a novel proprietary data structure efficient for both random updates and range queries. It is vectorial to accelerate analytical queries by processing multiples rows at the same time. It has a unique design that provides perfect isolation between both workloads.
Grow and shrink database cluster size as needed ensuring optimal use of resources.
Currently, database systems are over-provisioned to avoid crashing under the highest foreseen load peak. Over-provisioning results in wasting a large fraction of the budget. On cloud deployments, paying per use, it means paying 24x7 for resources one might never need, or resources that are just needed 1/5 of the time (e.g. working hours are 20% of all the hours in the year). On premise, power, cooling, and 24x7 operations team cost are all proportional to the number of nodes that are running. Having many more nodes than needed results in a high waste of budget.
LeanXcale provides full elasticity. LeanXcale manager is able to provision new nodes dynamically to scale out any incoming workload to deal with temporary peak capacity needs. In the same way, when the peak is over, LeanXcale manager can decommission unneeded nodes to just use the necessary resources for coping with the current workload.
LeanXcale adds efficiency to the data management of companies relying on data-driven operations by augmenting the resources when needed to load peaks such as Black Fridays or other flash crowds and by reducing the footprint of the cluster during low demand hours. LeanXcale avoids over-provisioning, thus reducing substantially the operations costs. Besides, LeanXcale database makes the most out of a cloud environment, either public or private, and cuts down 24x7 pay-per-use by enabling to reduce the cloud resources when the demand is lower.
Innovative algorithm for moving data regions without stopping processing or affecting the QoS of running transactions over them resulting in non-intrusive elasticity.
Novel multi-resource dynamic load balancing.
Non-intrusive dynamic elasticity scaling in and out.
One database, two interfaces: Simple and rich SQL queries and ultra fast relational key-value interface on the same data.
Companies have to choose today between the reliability, consistency, and ease of use of SQL operational databases and the performance and scalability of NoSQL data stores. Traditional SQL operational databases are fully ACID guaranteeing the consistency of data with transactional semantics, they are queried with SQL known by millions of developers, and accessed by the widely known JDBC drivers. Unfortunately, they do not scale and become the main IT bottleneck.
NoSQL data stores, especially key-value data stores, are highly scalable and very performant. Unfortunately, they are not ACID and they lack data consistency guarantees. They have their own non-standardized query APIs/languages known by a small fraction of developers that are hard to find.
LeanXcale is a Full ACID relational database. As such data can be accessed with Full SQL and through a standard JDBC driver. Unlike existing SQL databases, LeanXcale is ultra-scalable and able any workload load at any scale.
LeanXcale also offers a key-value interface to its relational data. This key-value interface is ultra-efficient and avoids all the overhead of SQL processing when SQL is not needed (e.g. for ingesting data at very high rates, or making simple ranges queries with predicates), while still being Full ACID and thus, avoiding the consistency issues of current NoSQL data stores.
LeanXcale provides, therefore, a database with two interfaces that can be used simultaneously, each of them for the most suited purpose.
LeanXcale's storage engine, KiVi, is in itself a fully ACID relational key-value data store. It can scale out to 100s of nodes, store terabytes of data and bear many millions of update operations per second. Unlike, most key-value data stores, KiVi is relational, so the data can be queried with range queries with arbitrary predicates. LeanXcale enables to access the data not only through SQL, but also through the underlying key-value interface enables to do simple operations such as insertions, updates and queries with predicates without the overhead of SQL in an extremely efficient way. At the same time data is still accessible through SQL when appropriate or when the power of complex SQL queries is needed.


Our best selling bat, the Palio 2 star ready made bat is slightly heavier than the Palio 1 star model and features a better quality blade. This model is also known as the Palio "Expert" Table Tennis Bat and are identical to those sold on Amazon. This genuine Palio ready-made bat is recommended for players wishing to improve their table tennis skills.
Now supplied with a FREE plastic rubber protector sleeve!
Palio CJ8000 rubbers ITTF approved.
Improved spin, control and durability from the ITTF approved Palio CJ8000 Biotech rubbers.
A good quality bat at a great price!
The Palio 2 Star blade is a good quality class 2 blade with a 7 layer construction (5 wood + 2 carbon). The flared profile of the handle fits comfortably in the hand and it is nicely balanced. Like most table tennis rackets sold in the UK, this has a long handle designed for shake hands grip (which is the most commonly used grip).
The rubbers used in the Palio 2 star bat are the very popular Palio CJ8000. These are ITTF approved, pimples (pips) in, two sides loop on a 2.0-2.2mm (approximate thickness) sponge. The CJ8000 rubbers are great for beginners and intermediate players. The rubber top sheet is tacky which makes them good for loops and spin. The thick sponge helps with an attacking/offensive style of play. The rubbers are the same on both sides, only the colour is different. Please note that the rubber sponge colour may vary.
I organise an over 50's table tennis group in Saltburn and buy these table tennis bats from skilltoyz as starter / improver bats for our players. Have purchased about 15 so far and always found them be ideal for our use. Plus the offering and prompt delivery is superb. For this price I doubt if there is anything out there to match.
I organise a table tennis group of about sixty people in the '50+' age group and have decided upon this bat as our preferred bat for beginners / improvers due to it's quality, ease of playing and price. The availability and delivery from Skilltoyz has always been first class.
I am just restarting to play TT again at 82 and decided I needed a better bat than my old Stiga.
Good choice. Good bat. Good price.


text:
El batarà galtaargentat (Sakesphorus cristatus) és una espècie d'ocell de la família dels tamnofílids (Thamnophilidae).

Hàbitat i distribució
Habita les sabanes i caatinga del Brasil oriental.

Referències

batarà galtaargentat

redpajama_set_name: RedPajamaWikipedia


Any request for GB/T1591 Q390D Carbon and Low-alloy High-strength Steel Plate Email: shi@hzzsteel.cn and Tel:0086-371-65652655 Inquiry If you have any request or doubts,Please send message to us,It will be checked for you on time.
Q345 Steel Equivalent ASTM A572 Grade 50, Find high Quality Products from Steel Sheets, Sichuan Liaofu Special Steel Trading Co., Ltd. China Steel - SteelfromChina Check the China Steel designations and grades below for a variety of China Steel products.
Hot sell equivalent material saph440 ,BBN keeps more than 10,000 tons equivalent material saph440 in stock each month.We can meet our customer's any quantity request.Based on these stock source, our advantage industry spread into steel process like:cutting ( any size and any shape ) drilling,welding,milling,machining and steel structure.if you want to know more,don't miss.
Katalor offer Hot rolled ss400 steel plate carbon steel sheet plate Q390B . Hot rolled ss400 steel plate carbon steel sheet plate Q390B manufacturer in China ,we are professional Hot rolled ss400 steel plate carbon steel sheet plate Q390B suppliers and distributor ,if you need Hot rolled ss400 steel plate carbon steel sheet plate Q390B price and application ,please contact us.
BBN offer A36 steel stock Forging Low-carbon steel,hot sell Forging standard for steel grade st37 1 sheet ,SA36,A283,A572 steel,offer all kinds of Forging Low-carbon steel stock in China.
022Cr19Ni10 steel roof raw material from china manufacturer in China ,we are professional 022Cr19Ni10 steel roof raw material from china suppliers and distributor ,if you need 022Cr19Ni10 steel roof raw material from china price and application ,please contact us.
Henan HZZ offers a large selection of high quality EN 10025-4 S355ML carbon and low-alloy high-strength steel plate with Q+T. Having been focused on various steel products for over 20 years, we now brings customers quality products with high precision and high strength. Fast delivery and good after-sales service are also available.
BCA - Design Guide on Use of Structural Steel - Free download as PDF File (.pdf), Text File (.txt) or read online for free.
Hot sell st52 equivalent material ,BBN keeps more than 10,000 tons st52 equivalent material in stock each month.We can meet our customer's any quantity request.Based on these stock source, our advantage industry spread into steel process like:cutting ( any size and any shape ) drilling,welding,milling,machining and steel structure.if you want to know more,don't miss.


We just took this unit in on a trade from the original owner. It was very well kept and regularly serviced by the local Acura Dealer. It has All Wheel Drive, Leather Heated Seats, Power Moonroof, Bluetooth and Backup Camera just to name a few of the options.
Please feel free to contact me anytime via text, phone or email.


Risga Carson has been volunteering for Amnesty Scotland during the Edinburgh Festival for several years. This year, she was Festival Co-ordinator.
Every year, at least 30 volunteers work with Amnesty Scotland at the Edinburgh Festival (Book, Fringe and Comedy) to campaign for our Festival case.
This case changes each year but our success rate has remained constant for the past six years; last year's case, a Burmese prisoner of conscience called U Myint Aye was released just three months after our campaign. In 2011, the 'UAE 5', five men who were detained in the United Arab Emirates, were similarly freed after our efforts. This year's campaign is asking the Sri Lankan government to investigate the disappearance of Prageeth Eknaligoda.
At the time of writing, it's the last day of the Festival. I've been speaking to some of our volunteers throughout the month about why they volunteered and what they've enjoyed most about the experience.
Our volunteers come from a wide variety of backgrounds. They range from senior school students to retirees. Some have been involved with Amnesty for years, through involvement with local or university groups, whilst others are getting involved for the first time.
Similarly, reasons for getting involved also vary. Alistair, another new volunteer, realised he had free time throughout August that would allow him to become more involved with Amnesty and he has promised to return next year.
Gill is a very experienced reviewer, and this year she had the opportunity to review "Nirbhaya" which actually won the Freedom of Expression Award – this was her Festival highlight.
If you would like to volunteer for the Edinburgh Festival next year, keep an eye on our Twitter feed or our website for the announcement of applications early in 2014.


Jeep Grand Cherokee and VW Bug Stuck - Whoops!
A couple of friends and I decided it would be a good idea to drive along a river one evening. When we first tested the riverbed, it was hard rock until all of a sudden we were driving on soft sand. I thankfully made it to a raised sand bar and parked there as I waited for my friend in his new Rubicon to come down. He got stuck in the sand and I had to pull him out. This led to me being stuck past my wheels and almost to the top of my fenders by the end of the night. Fortunately, we were able to get a tow company to pull us out of our ruts so that we could turn around and drive out.
I was out with the Baja after fixing its engine and decided to tool around in a field near where I live and a Cars & Coffee is usually held. After exploring for a little while, I was headed back and decided to go the short way to the parking lot over what I thought was dried mud. I was wrong. It was clay and the Bug dug in. I had to go back and get my Land Cruiser to winch it out. Whoops.


text:
Fail Week: When The U.S. Government Knocked On Tim Draper's Door About That $6 Million
Colleen Taylor	@loyalelectron / 7 years
It's said that history is written by the victors — or at least, by those who empathize with the victors — so it makes sense that much of the press coverage about the tech industry concentrates on the big wins instead of the losses. But the truth is that the business people best known for being "successful" have also had their fair share of failures along the way. They just don't discuss them very often.
That silence about failure is something that needs to change. People who are working through struggles in building a business should know that they're not the only ones who have had dark days.
So we asked some of the most prominent people in the tech industry to talk about a time in their careers that was marked by epic failure and dark days. We got five really good stories, and we'll be airing them over the coming days in a series we're calling "Fail Week" (yep, it's our own answer to Shark Week.)
In this first episode, hear legendary venture capitalist Tim Draper talk about the time that the government knocked on his door about the $6 million he owed them — and put him on their "dirt list" of people they were watching. According to him, before you succeed, you must "fail and fail again."


text:
EC plans new cloud data rules
by Michael Carroll |
Dec 8, 2011 6:58am
European Union data protection laws need rapid and wide-reaching overhaul to cover increasing use of cloud services, European Commission (EC) vice president Viviane Reding claims.
Updated laws should ensure that consumers are in full control of the information they share and where they share it, businesses make security a bedrock of cloud services, and clarify how European information is shared with other global nations, Reding told a GSM Association cloud security round table yesterday.
Reding, who is also the EU justice commissioner for privacy, notes that current laws are over 15 years old, and so fail to account for new data protection scenarios raised by growing cloud adoption.
"Technological advances in 2011 represent one of the biggest challenges to data protection and data security of our citizens," Reding states, adding that fresh data protection laws are needed to meet "these new challenges and any new situations."
The new laws should also encourage a level playing field between businesses of all sizes. Redding notes that cloud services are already benefitting small to medium-sized enterprises by removing the need for them to maintain costly servers on-site. "Inefficient data protection rules hold businesses back," the commissioner points out.
Redding says the protection elements outlined at the round table will form the basis of a new package of legislative proposals due in January. The commissioner also pledged to work closely with digital agenda vice president Neelie Kroes, who plans to propose a Europe-wide cloud computing strategy in 2012, because "we both believe that Europe should be in the fast lane when it comes to cloud computing," Redding notes.
https://twitter.com/fiercewirelessE


text:
The Whimsy of Creation: The Blog of Tieryas
Videogames, people who can fly, an artist who paints through fire, I like to scribble down everything I can. This site is a hub for all my musings…
Mecha Samurai Empire Press
USJ Press
Tieryas Reviews Kerotakis by Janice Lee
By Peter Tieryas April 3, 2014 author book review books fiction janice lee kerotakis philosophy review science time writing
Kerotakis by Janice Lee is a chant, a singularity sucking on the neurons of your soul, a conversation between a futuristic cyborg, a scientist from the past, a real brain, a painter and author and a mother out of time, and you, the orbital collapse of a gravitational anomaly spurred by an inquisition of the metaphysics of time and literature. Kerotakis is physics, poetry, fiction, ontology, and metamorphosis hurled together into a hurricane of Lee's prose.
"I've heard that dust is 70% human skin. Whose skin? Does that include my skin? Or is it all theirs?"
The chemical composition of sentences is part of the allure as she describes the reactions that constitute, "a metaphor for a metaphor." Nothing less than time and existence is at stake, a Socratic methodology shattered by mechanical meanderings. Do mathematics have a monopoly on truth? Or can a dialogue, despite all its inherent limitations, splinter reality in ways formulas lack? Language can bias and restrict concepts due to linguistic and cultural barriers inherent in the syntax. Lee attempts to circumvent those limitations with multiple perspectives that attack the questions with both a sense of wonder and recontextualizing analysis. She is both skeptic and zealot, machine and human, mother and daughter, scientist and guinea pig:
"You can only perceive the time in which you exist. You may perceive the past in memory, or the future in imagination, but direct perception only exists in the present. You can perceive space at a distance, but time only when in proximity to it."
Or to simplify:
"is real really real?"
I've read almost everything by Janice Lee (we're also been collaborating on a project called Entropy), but reading Kerotakis was a revelation, especially through some of the most provocative prose-poetry I've ever read. "String theory suggests that the Big Bang was not the origin of the universe but simply the outcome of a preexisting state." It amazes me to think this was her first book, her Big Bang of ideas. Watch as her universe unfolds in Daughter, Damnation, and other future books.
Posted in literary


text:
Los Angeles Dodgers Foundation Sunset Run presented by UCLA Health
Use the code "RaceGrader" and take $5 OFF registration!
The Los Angeles Dodgers Foundation is ready to go the distance and tackle the most pressing problems facing Los Angeles with a mission to improve education, health care, homelessness and social justice for all Angelenos. ESPN's 2020 Sports Humanitarian Team of the Year, the Los Angeles Dodgers Foundation is bigger than baseball and envisions a city where everyone regardless of zip code has the opportunity to thrive.
This year's run will take place at "Sunset". The 2022 Los Angeles Dodgers Foundation Run Presented by UCLA Health features a 5K and 10K course in Dodger Stadium with breathtaking views of the Downtown L.A. Skyline and a cool-down lap around the Dodger Stadium warning track.


text:
Browsing Cases by Knowledge Domain/Industry
All of Vlerick RepositoryCommunities & CollectionsPublication DateAuthorsTitlesSubjectsKnowledge Domain/IndustryThis CollectionPublication DateAuthorsTitlesSubjectsKnowledge Domain/Industry
Browsing Cases by Knowledge Domain/Industry "Innovation Management"
xmlui.ArtifactBrowser.ConfigurableBrowse.view
A case study of Arteconomy - Building a bridge between art and enterprise: Flemish businesses stimulate creativity and innovation through art
Van den Broeck, Herman; Cools, Eva; Maenhout, Tine (2008)
In a world where there has long since been more at play than functionality and cost price, we need creative innovation more than ever before. Organisations are trying to find ways to embed more creativity, more innovative potential and more entrepreneurship into the everyday running of their businesses. They are constantly in search of effective ways to make their organisation's culture better equipped for change. The Flemish non-profit organisation Arteconomy has developed a method for doing this, by bringing businesspeople and artists together in a series of particularly unique projects. In this case study, you can read about the philosophy that give rise to Arteconomy and the pioneering work that preceded it. The case describes two specific projects that provide a concrete illustration of the arteconomy approach in two Belgian textile firms: 'The Dragon of Deerlijk' at Promo Fashion and 'The Walk' at Concordia Textiles. The case study, and more specifically Arteconomy's approach, provides relevant material for discussion with students (level: Masters and MBA) and managers (in the context of executive business programmes) on: (1) change as an organisational process, and (2) how to stimulate employees' creative skills.
Case NewCo
Clarysse, Bart (2003)
Dyneema, the superstrong polyethylene fiber
Van Asten, Tim; Van Dingenen, Jan; Vanhaverbeke, Wim
Dyneema, the superstrong polyethylene fiber: teaching note
Vanhaverbeke, Wim; Van Dingenen, Jan; Kirschbaum, Robert
From the Beer Garage to the Europe Zone HQ - Digital Innovation at AB Inbev
Van den Bergh, Joachim; Viaene, Stijn (2017)
How IT enables Business Model innovation at the VDAB
Viaene, Stijn; Broeckx, Saskia (2012)
This case study invites students to discuss strategic value creation through the use of IT. It raises issues of business model innovation, IT strategy, digital platforms, ecosystems, business-IT alignment, and leadership. The key character in the case is the CIO, Paul Danneels, who is ready to drive the strategic transformation of the VDAB, the Flemish Employment Agency, from a service provider to a labor market conductor. Starting from a firm understanding of the VDAB's strategic choices, students should be able to discuss the positioning and role of the IT department as well as its views on value delivery. The case also asks students to reflect on the desired features of the IT organization, the ways in which IT might help the VDAB to co-create value with other labor market actors, and any issues the CIO and the CEO should discuss in the near future.
Imec (A): creating value through a new approach to IPR Management
Chesbrough, Henry; Vanhaverbeke, Wim (2008)
This is the first of a two-case series (308-225-1 and 308-226-1). IMEC - a successful Belgian research institute in nano-electronics - represents an innovative and successful open innovation response to the growing challenges of technology innovation in the semiconductor industry. IMEC offers a creative public-private partnership approach to pursue new generation technologies, with the support of both public funds and industry membership funds.There are several issues that can be pursued through this case. How public and private sources of research funding work in practice? How academic research goals do or do not comport with industry research goals? How industrial research is organised in a capital intensive, rapidly advancing industry? The role that intellectual property can play in catalysing advanced research within an open innovation model? The role of business models, and how they enable and constrain research? The case shows how IMEC is confronted by an investment decision that is on an entirely different scale from anything undertaken before: whether or not to raise and invest more than US$1 billion to upgrade its facilities and equipment to research 300mm wafer semiconductor technology research. This particular setting opens up broader questions about IMEC's existing business model, its open intellectual property rights model, etc In this sense, this decision will force both the strengths and the limits of the IMEC model into the open.
Imec (B): Creating value through a new approach to IPR Management
Odusanya, Lola; Chesbrough, Henry; Vanhaverbeke, Wim (2008)
This is the second of a two-case series (308-225-1 and 308-226-1). IMEC - a successful Belgian research institute in nano-electronics - represents an innovative and successful open innovation response to the growing challenges of technology innovation in the semiconductor industry. IMEC offers a creative public-private partnership approach to pursue new generation technologies, with the support of both public funds and industry membership funds.There are several issues that can be pursued through this case. How public and private sources of research funding work in practice? How academic research goals do or do not comport with industry research goals? How industrial research is organised in a capital intensive, rapidly advancing industry? The role that intellectual property can play in catalysing advanced research within an open innovation model? The role of business models, and how they enable and constrain research? The case shows how IMEC is confronted by an investment decision that is on an entirely different scale from anything undertaken before: whether or not to raise and invest more than US$1 billion to upgrade its facilities and equipment to research 300mm wafer semiconductor technology research. This particular setting opens up broader questions about IMEC's existing business model, its open intellectual property rights model, etc In this sense, this decision will force both the strengths and the limits of the IMEC model into the open.
Incorporating New Business Opportunities at Eandis
Varganova, Olga; Samii, Behzad (2017)
Innovating with career analytics and big data
Viaene, Stijn; Danneels, Lieselot (2016)
Innovation for sustainable, profitable growth at Barry Callebaut
Muylle, Steve; Baert, Caroline; Debruyne, Marion (2013)
IT enabled change: the TPI project at Philips
De Graaf, Anouk; Vanhaverbeke, Wim (2001)
Open innovation at DSM: deciding about an external corporate investment in Sanus
Vanhaverbeke, Wim; Engelen, Yvonne
This negotiation case describes a situation in which an investment manager of a large chemical company (ACE) has to decide about a corporate venturing investment in a small high-tech start-up (Sanus). To win board approval for this investment, an ACE business unit (in this case, ACE Food Specialties) must write a letter of commitment. The investment manager of ACE Venturing cannot invest in the start-up without a MoU between the start-up and the business unit of ACE. This case provides the required information for a negotiation between the investment manager, the business unit manager, and the start-up's CEO. During the negotiation, students should discover that it is possible to draft an MoU which is beneficial for the two firms.
Siemens Enterprise Mis(s)Communications
Muylle, Steve; Devoldere, Bart (2009)
In December 2007, Danny VandeVyver, Regional Director of Marketing and Communication at Siemens Enterprise Communications, was given a board mandate to introduce OpenScape Unified Communications, a breakthrough concept for integrated professional communications, in his region. Together with a global marketing communications agency, VandeVyver considered three options for successfully unleashing this killer application in the Belgian test market. Based on the learning, the technology would then be rolled out in the South West Europe region. The case highlights the importance and complexity of integrated marketing communications and explores the possibilities of new social media in a B2B setting. Conventional wisdom in B2B integrated marketing communications (IMC) is challenged by novel approaches in which the Web and even a former Miss Belgium play an important role. We found the case to be highly useful for introducing and discussing effective B2B IMC campaign development through which managers and students can learn to identify and integrate key communication sources, messages, media, target audiences, and effects. The case is supplemented with a teaching note, three presentations, and four video snippets that illustrate how the technology works and showcases how the selected campaign was implemented. Key metrics and insights are shared.
Strategic innovation in the logistic real estate development business: Eurinpro
Debruyne, Marion; Schoovaerts, Marie; Boute, Robert (2007)
Eurinpro is a pan-European provider of tailor-made logistic real estate solutions. The case describes Eurinpro's history towards its current business model that deviates from established industry practice. The case highlights the different aspects of the business model and the unique structure and capabilities that Eurinpro has established to make it successful. The focus of the case is on the customer value model that Eurinpro developed. The question posed in the case is whether Eurinpro can sustain this model to keep up growth in the future.
Strategic innovation in the logistic real estate development business: Eurinpro - Teaching note


Parties tournament in format *.pdn available on reference (*.zip).
Tables tournaments in format *.xls available on reference (*.zip).
In section "Photo's" is added photo participant, as well as photographies excursion.
17/08/2009 Refined lists of participants. Regulations.


text:
Q: [PHP-Array]Group Script Hey stackoverflow comunity i have this script to search a MySQL database, this script shows me how many times one number was extracted from the loto extraction. I don't know how to make it search for number groups like 22,69,80.
What this script shows:
http://i.stack.imgur.com/i8wof.png
Script:
<?php
mysql_connect("mysql.hostinger.ro", "******", "*****") or die(mysql_error());
mysql_select_db("*******") or die(mysql_error());

$numere_cautate = false;
if (isset($_POST['numere'])) {
    $search_text = str_replace(" ", "", trim($_POST['numere']));
    if (!empty($search_text)) {
        $numere_cautate = explode(",", $search_text);
    }
}

$search_text = isset($search_text) ? $search_text : "";

$limit = isset($_POST['extrageri']) ? $_POST['extrageri'] : 10;
$limit = is_numeric($limit) ? $limit : 10;

$ultimele_zile = isset($_POST['ultimele_zile']) ? $_POST['ultimele_zile'] : 3;
$ultimele_zile = is_numeric($ultimele_zile) ? $ultimele_zile : 3;
?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <link rel="stylesheet" href="style.css" type="text/css" media="all" />

    <title>Loto Polonia</title>

    <form method="post" action="index.php">
        <input type="text" placeholder="Numere" name="numere" size="30" value="<?php echo $search_text; ?>">
        <input type="text" placeholder="Extrageri" name="extrageri" size="5" value="<?php echo $limit; ?>">
        <select name="ultimele_zile">
            <option value="1">Ultima zi</option>
            <option value="2">Ultimele 2 zile</option>
            <option value="3" selected="selected">Ultimele 3 zile</option>
            <option value="4">Ultimele 4 zile</option>
            <option value="5">Ultimele 5 zile</option>
            <option value="0">Toată baza de date</option>
        </select>
        <input type="submit" value="Caută">
    </form>

            Nr.
            Aparitii
            Pauza
            Pauza max.
            Media

        <?php
        if (is_array($numere_cautate)) {
            $cu_limita = ($ultimele_zile == 0) ? "" : "AND data >= (CURDATE() - INTERVAL $ultimele_zile DAY )";

            foreach ($numere_cautate as $numar_cautat) {
                echo '
';
                echo ''.$numar_cautat.'	';
                echo '';
                $aparitii = mysql_num_rows(mysql_query("SELECT * FROM extrageri WHERE FIND_IN_SET('".$numar_cautat."', numere) > 0 ".$cu_limita." ORDER BY id DESC "));
                echo $aparitii;
                echo '	';

                $prima_pauza = false;
                $pauza = $pauza_curenta = $pauza_maxima = 0;
                $ultimele_extrageri = mysql_query("SELECT * FROM extrageri WHERE id ".$cu_limita." ORDER BY id DESC");
                $numar_ultimele_extrageri = mysql_num_rows($ultimele_extrageri);
                while ($rand = mysql_fetch_assoc($ultimele_extrageri)) {
                    $numere = str_replace(" ", "", $rand['numere']);
                    $numere_array = explode(",", $numere);

                    if (!in_array($numar_cautat, $numere_array)) {
                        $pauza++;
                        if ($pauza > $pauza_maxima) $pauza_maxima = $pauza;
                    } else {
                        if ($prima_pauza == false) {
                            $pauza_curenta = $pauza;
                            $prima_pauza = true;
                            $pauza = 0;
                        }
                    }

                    if ($aparitii == 0) $pauza_curenta = $pauza_maxima = $numar_ultimele_extrageri;
                }
                $medie = number_format(($aparitii * 100)/$numar_ultimele_extrageri, 2);
                echo ''.$pauza_curenta.'	';
                echo ''.$pauza_maxima.'	';
                echo ''.$medie.'%	';
                echo '
';
            }
        }
           ?>

http://i.stack.imgur.com/i8wof.png
This is mysql dump

SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO"; SET time_zone = "+00:00";
/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT /;
  /!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS /;
  /!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION /;
  /!40101 SET NAMES utf8 */;
--
-- Bază de date: loto_polonia

--
-- Structura de tabel pentru tabelul extrageri
CREATE TABLE IF NOT EXISTS extrageri (   id int(11) NOT NULL
  AUTO_INCREMENT,   data date NOT NULL,   numere varchar(255) NOT
  NULL,   PRIMARY KEY (id) ) ENGINE=InnoDB  DEFAULT CHARSET=utf8
  AUTO_INCREMENT=31 ;
--
-- Salvarea datelor din tabel extrageri
INSERT INTO extrageri (id, data, numere) VALUES (1,
  '2014-01-08',
  '6,9,10,12,14,25,27,30,32,33,34,41,43,50,51,56,59,68,73,74'), (2,
  '2014-01-08',
  '6,7,8,11,18,20,24,25,31,45,48,50,51,53,61,67,69,72,75,80'), (3,
  '2014-01-09',
  '4,5,6,7,12,19,22,28,32,36,44,48,52,53,57,58,66,74,77,penis'), (4,
  '2014-01-09',
  '3,5,6,8,9,13,14,19,26,31,34,41,42,50,54,59,63,67,73,77'), (5,
  '2014-01-10',
  '4,5,7,11,15,17,20,22,24,25,31,32,35,41,42,55,60,62,69,75'), (6,
  '2014-01-10',
  '1,6,11,12,13,15,19,27,28,31,34,35,40,43,49,51,52,64,66,71'), (7,
  '2014-01-11',
  '8,14,21,23,24,28,31,33,39,44,47,48,58,62,64,67,70,71,78,80'), (8,
  '2014-01-11',
  '5,8,15,24,31,35,37,39,40,42,47,51,57,58,63,68,70,75,76,78'), (9,
  '2014-01-12',
  '1,3,10,11,12,24,31,38,41,48,52,53,56,58,62,64,73,74,75,78'), (10,
  '2014-01-12',
  '2,6,9,13,17,21,29,44,50,53,54,56,58,59,65,66,70,71,72,76'), (11,
  '2014-01-13',
  '9,10,11,12,15,16,23,26,32,33,34,43,45,49,60,67,69,72,74,78'), (12,
  '2014-01-13',
  '4,9,17,18,22,23,25,27,30,31,32,37,44,51,52,55,66,70,71,72'), (13,
  '2014-01-14',
  '3,8,16,18,25,26,29,38,41,44,51,54,57,64,66,69,71,76,77,79'), (14,
  '2014-01-14',
  '6,7,16,22,24,26,28,35,37,43,46,54,55,58,69,70,71,73,77,79'), (15,
  '2014-01-15',
  '4,5,6,10,11,20,23,25,27,28,30,31,37,39,41,53,55,57,70,71'), (16,
  '2014-01-15',
  '5,7,10,14,15,19,28,30,36,37,38,45,52,57,58,66,67,72,75,76'), (17,
  '2014-01-16',
  '4,6,8,9,10,22,25,34,36,37,40,42,44,47,49,51,58,63,70,73'), (18,
  '2014-01-16',
  '7,8,9,10,14,22,23,26,27,29,30,32,48,55,57,58,62,65,67,75'), (19,
  '2014-01-17',
  '2,5,8,13,15,22,24,38,41,43,50,56,60,62,64,67,72,74,75,77'), (20,
  '2014-01-17',
  '1,6,13,14,19,21,24,25,30,33,38,44,47,49,54,56,57,63,77,80'), (21,
  '2014-01-18',
  '2,5,7,10,15,21,26,27,34,36,43,47,50,52,59,68,72,74,76,77'), (22,
  '2014-01-18',
  '12,14,17,21,23,27,33,34,35,38,53,57,58,63,64,66,69,70,74,75'), (23,
  '2014-01-19',
  '2,4,6,9,17,20,21,30,31,34,36,37,41,49,60,66,67,68,69,78'), (24,
  '2014-01-19',
  '1,17,18,25,27,30,32,35,36,37,41,48,55,58,59,64,69,71,72,77'), (25,
  '2014-01-20',
  '10,12,14,16,19,20,21,24,29,36,43,46,52,53,55,56,61,63,64,79'), (26,
  '2014-01-20',
  '2,6,7,14,20,21,22,26,35,43,44,46,47,50,59,60,63,64,72,76'), (27,
  '2014-01-21',
  '7,9,10,11,12,15,18,24,25,39,44,51,54,55,56,57,60,66,74,77'), (28,
  '2014-01-21',
  '3,9,14,15,22,30,39,40,50,52,55,56,59,60,68,69,71,75,79,80'), (29,
  '2014-01-22',
  '1,15,17,18,19,22,23,25,27,36,39,51,53,54,56,60,61,62,69,74'), (30,
  '2014-01-22',
  '2,4,8,16,21,25,27,31,40,45,47,52,54,56,59,62,69,71,73,77');
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT /;
  /!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS /;
  /!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;

A: You can use the IN clause in MySQL. This is a better solution compared to: "X OR Y OR Z";
An example with the IN clause:
SELECT * FROM table WHERE ID IN (22, 69, 80);

This will return the record where ID is equal to one of the set you have given.
Read more: http://www.tutorialspoint.com/mysql/mysql-in-clause.htm
At the presentation layer you can apply a SELECT with the multiple attribute. The user can select multiple items from a list using CTRL. Here you can see an example: http://www.w3schools.com/tags/att_select_multiple.asp
Although this presentation method requires you to load all records from the database, you can also use AJAX to find the records you want and get their IDs. For example: http://loopj.com/jquery-tokeninput/

redpajama_set_name: RedPajamaStackExchange


text:
Q: GoogleAdMobAdsSdkAndroid-6.3.0 not working I've created some apps for the past last two weeks, and the admob ads is working perfectly.
Then, last week, when I published one app that has the ads in the app, I notice it was not working. The status said inactive (red circle) .
Then, I realized that there's already an updated version of AdsSDK which is 6.3 and my app is still using 6.2.1. But the ads are showing perfectly in the app.
So, what I did is just change the AdsSdk  (6.2.1 > 6.3) and update the app on Google Play (ver 2).
But, the ads are still not working. The status is still inactive on AdMob Dashboard.
Then, I also deleted the app profile on Admob, and created a new one with the same package name.
And of course, I changed the mediation ID in the app, and updated a new version (ver 3.0) on Google Play.
And I don't think there is a problem in the code, used the same code as other apps which using adssdk 6.2.1 ...
What's the problem ?
Thank you :D

A: Problem solved ! :D
At the Ad Network Configuration Setting,
I reliazed that the publisher id for the app was is different . So , I just changed it to the correct Publisher ID ..
Sorry for the unnecessary post ...
If someone has a problem like mine , try checking your AdMob Network setting ~
:D


text:
import { css } from '@emotion/core';
import styled from '@emotion/styled';

const primary = ({ theme }) => css`
	background-color: ${theme.colors.primaryColor};
`;

const Slider = styled('div')`
	.rheostat {
		overflow: visible;
		margin: 24px 12px;
	}

	.rheostat-progress {
		background-color: #d8d8d8;
		position: absolute;

		${props => props.primary && primary}
	}

	.rheostat-handle {
		border: 1px solid #9a9a9a;
		${props => props.primary && primary}
		background-color: #fff;
		border-radius: 50%;
		height: 24px;
		outline: none;
		z-index: 2;
		width: 24px;
		cursor: pointer;
	}

	.rheostat-horizontal {
		height: 24px;
	}

	.rheostat-background {
		height: 4px;
		background-color: #c7c7c7;
		top: 0px;
		width: 100%;
		position: relative;
	}

	.rheostat-horizontal .rheostat-progress {
		height: 4px;
		top: 0;
	}

	.rheostat-horizontal .rheostat-handle {
		margin-left: -12px;
		top: -10px;
	}

	.slider-tooltip, .slider-tooltip-focus, .slider-tooltip-visible {
		visibility: hidden;
		background-color: black;
		color: #fff;
		text-align: center;
		border-radius: 6px;
		padding: 6px 8px;
		position: absolute;
		z-index: 1;
		transform: translate(-50%,-170%); /* Positions Tooltip Container */
	}

	.slider-tooltip-visible {
		visibility: visible;
	}

	.slider-tooltip:after, .slider-tooltip-focus:after, .slider-tooltip-visible:after {
		content: '';
		position: absolute;
		top: 98%; /* Positions Tooltip Arrow */
		left: 50%;
		margin-left: -5px;
		border-width: 5px;
		border-style: solid;
		border-color: black transparent transparent transparent;
	}

	.rheostat-handle:hover .slider-tooltip,
	.rheostat-handle:focus .slider-tooltip,
	.rheostat-handle:active .slider-tooltip {
    	visibility: visible;
	}

	.rheostat-handle:hover .slider-tooltip-focus {
   		visibility: hidden;
	}

	.rheostat-handle:focus .slider-tooltip-focus,
	.rheostat-handle:active .slider-tooltip-focus {
		visibility: visible;
	}

	${({ theme }) => theme.component};
`;

export default Slider;

redpajama_set_name: RedPajamaGithub


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