783 research outputs found
QCD critical end point from a realistic PNJL model
With parameters fixed by critical temperature and equation of state at zero
baryon chemical potential, a realistic Polyakov--Nambu--Jona-Lasinio (rPNJL)
model predicts a critical end point of chiral phase transition at . The extracted freeze-out line from heavy ion
collisions is close to the chiral phase transition boundary in the rPNJL model,
and the kurtosis of baryon number fluctuations from the rPNJL
model along the experimental freeze-out line agrees well with the BES-I
measurement. Our analysis shows that the dip structure of measured
is determined by the relationship between the freeze-out line
and chiral phase transition line at low baryon density region, and the peak
structure can be regarded as a clean signature for the existence of CEP.Comment: 8 papges, proceedings of QCD@Work 201
Creencias de los profesores sobre la enseñanza del francĂ©s como lengua extranjera en una universidad china: una perspectiva multilingĂŒe
While French is an important European language being taught in Chinese universities, not much is known about French language teachersâ beliefs about its teaching as a foreign language, particularly not from a multilingual perspective. Adopting a multiple-case design, this study examined 5 French language teachersâ beliefs about the French language and the learner. Analysing data collected via interviews, the study revealed that teachersâ beliefs reflected neither the linguistic landscape of the French language nor the learnerâs existing level of multilingualism. However, the teachersâ monolingual ideology as reflected in their beliefs seemed to co-exist with beliefs that reflected their multilingual ideology; the cultural capital brought by learning French as a foreign language prevailed in teachersâ beliefs about the language with reference to the value of French learning in their studentsâ future international communication in a multilingual world, and the teachers also perceived their students as French learners with English learning experience that could lend support to their French learning.
FUNDING INFORMATION. This research was funded by âResearch on the Innovation of Foreign Language Education in Chinaâ (grant number: 22JJD740011), a major project of the Key Research Institutes of Humanities and Social Sciences under the Ministry of Education, as well as supported by the Beijing Foreign Studies University âDouble First-Classâ Fund (project title: âConstruction of Standards for Foreign Language Education and Foreign Language Talents Training in Higher Educationâ, project number: 2022SYLZD010).Si bien el francĂ©s es un idioma europeo importante que se enseña en las universidades chinas, no se sabe mucho sobre las creencias de los profesores de francĂ©s sobre su enseñanza como lengua extranjera, particularmente no desde una perspectiva multilingĂŒe. Adoptando un diseño de casos mĂșltiples, este estudio examinĂł las creencias de 5 profesores de francĂ©s sobre el idioma francĂ©s y el alumno. Al analizar los datos recopilados a travĂ©s de entrevistas, el estudio revelĂł que las creencias de los docentes no reflejaban ni el panorama lingĂŒĂstico de la lengua francesa ni el nivel actual de multilingĂŒismo del alumno. Sin embargo, la ideologĂa monolingĂŒe de los docentes, que se refleja en tales creencias, parecĂa coexistir con las creencias que reflejaban su ideologĂa multilingĂŒe: el capital cultural aportado por el aprendizaje del francĂ©s como lengua extranjera prevalecĂa en las creencias de los profesores sobre el idioma con referencia al valor del aprendizaje del francĂ©s en la futura comunicaciĂłn internacional de los estudiantes en un mundo multilingĂŒe; los profesores tambiĂ©n percibĂan a sus estudiantes como estudiantes de francĂ©s con experiencia en el aprendizaje del inglĂ©s que podrĂa ayudar al aprendizaje del francĂ©s
ShenZhen transportation system (SZTS): a novel big data benchmark suite
Data analytics is at the core of the supply chain for both products and services in modern economies and societies. Big data workloads, however, are placing unprecedented demands on computing technologies, calling for a deep understanding and characterization of these emerging workloads. In this paper, we propose ShenZhen Transportation System (SZTS), a novel big data Hadoop benchmark suite comprised of real-life transportation analysis applications with real-life input data sets from Shenzhen in China. SZTS uniquely focuses on a specific and real-life application domain whereas other existing Hadoop benchmark suites, such as HiBench and CloudRank-D, consist of generic algorithms with synthetic inputs. We perform a cross-layer workload characterization at the microarchitecture level, the operating system (OS) level, and the job level, revealing unique characteristics of SZTS compared to existing Hadoop benchmarks as well as general-purpose multi-core PARSEC benchmarks. We also study the sensitivity of workload behavior with respect to input data size, and we propose a methodology for identifying representative input data sets
Growth and Survival Determinants of Chinese Private Firms: Fieldwork evidence and econometric estimates
This paper reports on one of the first empirical attempts to investigate small
firm growth and survival, and their determinants, in the Peoplesâ Republic of China.
The work is based on field work evidence gathered from a sample of 83 Chinese
private firms (mainly SMEs) collected initially by face-to-face interviews, and
subsequently by follow-up telephone interviews a year later. We extend the models
of Gibrat (1931) and Jovanovic (1982), which traditionally focus on size and age
alone (e.g. Brock and Evans, 1986), to a âcomprehensiveâ growth model with two
types of additional explanatory variables: firm-specific (e.g. business planning); and environmental (e.g. choice of location). We estimate two econometric models: a âbasicâ age-size-growth model; and a âcomprehensiveâ growth model, using Heckmanâs two-step regression procedure. Estimation is by log-linear regression on cross-section data, with corrections for sample selection bias and heteroskedasticity. Our results refute a pure Gibrat model (but support a more general variant) and support the learning model, as regards the consequences of size and age for growth; and our extension to a comprehensive model highlights the importance of location choice and customer orientation for the growth of Chinese private firms. In the latter
model, growth is explained by variables like planning, R&D orientation, market
competition, elasticity of demand etc. as well as by control variables. Our work on small firm growth achieves two things. First, it upholds the validity of âbasicâ size-age-growth models, and successfully applies them to the Chinese economy. Second, it extends the compass of such models to a âcomprehensiveâ growth model incorporating firm-specific and environmental variables
Intangible assets and determinants of firm growth in China
This paper reports on field work within Chinese small firms, aimed at acquiring data to measure the impact of intangible a ssets on firm growth. We extend a size - and age - based model to define growth as a function of size, age, entrepreneurship and intangible assets. We use statistical analysis to create measures of entrepreneurship and intangible assets from these data. Intangibles are classified into six categories: human capital; enterp rise culture, intellectual property; technology; reputation; and network. Finally, we estimate models of small firm employment growth using our new measures. For our sample, we find that entrepreneurial attributes have little significant impact on small firm growth; whereas intangible asset attributes have a positive and significant impact on growth, with networking and technological knowledge being of prime importance
Instance-wise Grasp Synthesis for Robotic Grasping
Generating high-quality instance-wise grasp configurations provides critical
information of how to grasp specific objects in a multi-object environment and
is of high importance for robot manipulation tasks. This work proposed a novel
\textbf{S}ingle-\textbf{S}tage \textbf{G}rasp (SSG) synthesis network, which
performs high-quality instance-wise grasp synthesis in a single stage: instance
mask and grasp configurations are generated for each object simultaneously. Our
method outperforms state-of-the-art on robotic grasp prediction based on the
OCID-Grasp dataset, and performs competitively on the JACQUARD dataset. The
benchmarking results showed significant improvements compared to the baseline
on the accuracy of generated grasp configurations. The performance of the
proposed method has been validated through both extensive simulations and real
robot experiments for three tasks including single object pick-and-place, grasp
synthesis in cluttered environments and table cleaning task
The kurtosis of net baryon number fluctuations from a realistic Polyakov--Nambu--Jona-Lasinio model along the experimental freeze-out line
Firstly we qualitatively analyze the formation of the dip and peak structures
of the kurtosis of net baryon number fluctuation along
imagined freeze-out lines and discuss the signature of the existence of the QCD
critical end point (CEP) in the Nambu--Jona-Lasinio (NJL) model, Polyakov-NJL
(PNJL) model as well as -dependent PNJL( PNJL) model with different
parameter sets, and then we apply a realistic PNJL model with parameters fixed
by lattice data at zero chemical potential, and quantitatively investigate its
along the real freeze-out line extracted from experiments.
The important contribution from gluodynamics to the baryon number fluctuations
is discussed. The peak structure of along the freeze-out line
is solely determined by the existence of the CEP mountain and can be used as a
clean signature for the existence of CEP. The formation of the dip structure is
sensitive to the relation between the freeze-out line and the phase boundary,
and the freeze-out line starts from the back-ridge of the phase boundary is
required. To our surprise, the kurtosis produced from the
realistic PNJL model along the experimental freeze-out line agrees with BES-I
data well, which indicates that equilibrium result can explain the experimental
data. It is worth to point out that the extracted freeze-out temperatures from
beam energy scan measurement are indeed higher than the critical temperatures
at small chemical potentials, which supports our qualitative analysis.Comment: 15 pages, 10 figure
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