摘要：
Financial networks have become extremely useful in characterizing the structures of complex financial systems. Meanwhile, the time evolution property of the stock markets can be described by temporal networks. We utilize the temporal network framework to characterize the time-evolving correlation-based networks of stock markets. The market instability can be detected by the evolution of the topology structure of the financial networks. We then employ the temporal centrality as a portfolio selection tool. Those portfolios, which are composed of peripheral stocks with low temporal centrality scores, have consistently better performance under different portfolio optimization frameworks, suggesting that the temporal centrality measure can be used as new portfolio optimization and risk management tool. Our results reveal the importance of the temporal attributes of the stock markets, which should be taken serious consideration in real life applications. (C) 2018 Elsevier B.V. All rights reserved.
期刊：
Research in Autism Spectrum Disorders,2018年53:53-66 ISSN：1750-9467
通讯作者：
Bo, Jin
作者机构：
[Pang, YanLi; Shen, Bo; Bo, Jin] Cent China Normal Univ, Sch Phys Educ, Wuhan, Hubei, Peoples R China.;[Lee, Chimei M.] Univ Minnesota, Dept Pediat, Div Clin Behav Neurosci, Minneapolis, MN 55455 USA.;[Bo, Jin; Wright, Morgan] Eastern Michigan Univ, Dept Psychol, Ypsilanti, MI 48197 USA.;[Shen, Jiaming] Univ Michigan, Dept Stat, Ann Arbor, MI 48109 USA.;[Shen, Bo] Wayne State Univ, Div Kinesiol, Detroit, MI 48202 USA.
通讯机构：
[Bo, Jin] E;Eastern Michigan Univ, 341 MJ Sci Bldg, Ypsilanti, MI 48197 USA.
关键词：
ASD;Assessment;Chinese;Diagnosis;Screening
摘要：
The estimated prevalence of Autism Spectrum Disorders (ASD) in China has been consistently lower than most of the studies in the West. The current article addressed several challenges in identifying and diagnosing ASD in mainland China. The underestimated prevalence may due to a variety of reasons, including inconsistencies in screening and diagnostic procedures, variations in translated instruments, and discrepancies between diagnostic criteria. This review provides insight into ASD assessment and diagnosis in the Chinese population and discusses strategies for the further advancement of ASD identification and intervention in mainland China.
摘要：
The current study examined the augmentation of error feedback on visuomotor adaptability in older adults with varying degrees of cognitive decline (assessed by the Montreal Cognitive Assessment; MoCA). Twenty-three participants performed a center-out computerized visuomotor adaptation task when the visual feedback of their hand movement error was presented in a regular (ratio = 1:1) or enhanced (ratio = 1:2) error feedback schedule. Results showed that older adults with lower scores on the MoCA had less adaptability than those with higher MoCA scores during the regular feedback schedule. However, participants demonstrated similar adaptability during the enhanced feedback schedule, regardless of their cognitive ability. Furthermore, individuals with lower MoCA scores showed larger after-effects in spatial control during the enhanced schedule compared to the regular schedule, whereas individuals with higher MoCA scores displayed the opposite pattern. Additional neuro-cognitive assessments revealed that spatial working memory and processing speed were positively related to motor adaptability during the regular scheduled but negatively related to adaptability during the enhanced schedule. We argue that individuals with mild cognitive decline employed different adaptation strategies when encountering enhanced visual feedback, suggesting older adults with mild cognitive impairment (MCI) may benefit from enhanced visual error feedback during sensorimotor adaptation.
摘要：
Purpose: This study reports on our efforts toward extending the conceptual understanding of content development in physical education by validating content maps as a measurement tool, examining new categories of instructional tasks to describe content development and validating formulae that can be used to evaluate depth of content development. Method: The reliability, content, and concurrent validity of content maps and formulae were evaluated together with an application of the content maps and formulae. Descriptive statistics were used to report the data. Results: The reliability and validity of content maps was established. The new categories allowed for a finer analysis of content development. All formulae differentiated among different content expertise. Discussion/Conclusion: If depth of content knowledge is evidenced by tasks designed to refine, extend and apply student performance, then the content map, categories and formulae reported in this study provide tools that have utility for teachers, teacher educators and researchers.
摘要：
Highlights ? Individuals with normal motor ability showed a positive inter-limb transfer on motor planning when feedback was regular. ? When feedback was enhanced, inter-limb transfer was found on temporal control but not on spatial control or motor planning. ? A clear internal model, instead of motor abilities, is critical for inter-limb transfer on kinematic adaptation. Abstract A previous study suggested that adults with greater motor difficulties demonstrated less adaptation under a regular error feedback schedule (gain = 1:1) but reached a similar level of adaptation compared to controls when feedback was enhanced (gain = 1:2). In light of these findings, the present study examined inter-limb transfer after adults adapted to visuomotor distortions with their dominant hand on either regular or enhanced feedback schedules. Results revealed that successful transfer related to the magnitude of adaptation with their dominant hand regardless of the individuals’ motor abilities on the regular feedback schedule. When the feedback was enhanced, the transfer was not related to either the adaptation of the dominant hand or individuals’ motor abilities. We argue that a stable internal model is essential for inter-limb transfer in kinematic adaptation.
作者机构：
[Liu, Shouyin; Liu, Tao; Yang, Lintao] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan, Hubei Province, Peoples R China.;[Liu, Tao] Jiujiang Univ, Sch Informat Sci & Technol, Jiujiang, Jiangxi, Peoples R China.;[Liu, Shouyin; Liu, Tao; Yang, Lintao] Cent China Normal Univ, Collaborat & Innovat Ctr Educ Technol, Wuhan, Hubei Province, Peoples R China.;[Ge, Shuangkui] Beijing Inst Elect Technol & Applicat, Beijing, Peoples R China.
通讯机构：
[Yang, Lintao] C;Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan, Hubei Province, Peoples R China.;Cent China Normal Univ, Collaborat & Innovat Ctr Educ Technol, Wuhan, Hubei Province, Peoples R China.
关键词：
Schools;Social networks;Community structure;Undergraduates;China;Distribution curves;Social communication;Social research
摘要：
Social networks play an important role in our daily lives. However, social ties are rather elusive to quantify, especially for large groups of subjects over prolonged periods of time. In this work, we first propose a methodology for extracting social ties from long spatio-temporal data streams, where the subjects are 17,795 undergraduates from a university of China and the data streams are the 9,147,106 time-stamped RFID check-in records left behind by them during one academic year. By several metrics mentioned below, we then analyze the structure of the social network. Our results center around three main observations. First, we characterize the global structure of the network, and we confirm the small-world phenomenon on a global scale. Second, we find that the network shows clear community structure. And we observe that younger students at lower levels tend to form large communities, while students at higher levels mostly form smaller communities. Third, we characterize the assortativity patterns by studying the basic demographic and network properties of users. We observe clear degree assortativity on a global scale. Furthermore, we find a strong effect of grade and school on tie formation preference, but we do not find any strong region homophily. Our research may help us to elucidate the structural characteristics and the preference of the formation of social ties in college students’ social network.
关键词：
Phonemes;Syllables;Computational linguistics;Language;Semantics;Random variables;Morphology (linguistics);Probability density
摘要：
We study rank-frequency relations for phonemes, the minimal units that still relate to linguistic meaning. We show that these relations can be described by the Dirichlet distribution, a direct analogue of the ideal-gas model in statistical mechanics. This description allows us to demonstrate that the rank-frequency relations for phonemes of a text do depend on its author. The author-dependency effect is not caused by the author's vocabulary (common words used in different texts), and is confirmed by several alternative means. This suggests that it can be directly related to phonemes. These features contrast to rank-frequency relations for words, which are both author and text independent and are governed by the Zipf's law.
期刊：
International Journal of Psychology,2016年51(4):1087-1087 ISSN：0020-7594
作者机构：
[Luo, Xiaobing; Liu, Lian; Wang, Bin] Cent China Normal Univ, Sch Phys Educ, Wuhan, Hubei, Peoples R China.;[Li, Na] Fujian Normal Univ, Sch PE & Sport Sci, Fuzhou, Fujian, Peoples R China.;[Shi, Wenwen] Hubei Univ, Sch Phys Educ, Wuhan, Hubei, Peoples R China.;[Bo, Jin] Eastern Michigan Univ, Dept Psychol, Ypsilanti, MI 48197 USA.
摘要：
The Journal for Specialists in Pediatric Nursing (JSPN) is the international interdisciplinary resource for nurses who specialize in the care of children and families. T=\"I\">JSPN bridges the gap between research and practice by publishing peer-reviewed reliable, clinically relevant, and readily applicable evidence. Evidence includes qualitative and quantitative research, clinical expertise, and the perspectives of children and families. The journal integrates the best evidence with pediatric nurses' passion for achieving the best outcomes.The journal values interdisciplinary perspectives in the care of children and families and publishes a wide variety of peer-reviewed papers on clinically relevant topics. Each feature article concludes with a section titled, “How do I apply this information to nursing practice?” In addition, JSPN columns provide a forum for authors to share their expertise. The concise, information-packed columns are popular with students and educators as well as with clinicians.Coverage in the Journals@Ovid database begins with the January 2004 issue.
期刊：
Thinking Skills and Creativity,2016年19:175-187 ISSN：1871-1871
通讯作者：
Bao, Lei
作者机构：
[Xiao, Hua; Zhou, Shaona] S China Normal Univ, Sch Phys & Telecommun Engn, Guangzhou 510006, Guangdong, Peoples R China.;[Fu, Zhao; Bao, Lei; Raplinger, Amy; Han, Jing; Zhou, Shaona] Ohio State Univ, Dept Phys, 174 W 18th Ave, Columbus, OH 43210 USA.;[Koenig, Kathleen] Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA.;[Pi, Yuan] Cent China Normal Univ, Dept Phys, Wuhan 430079, Peoples R China.;[Li, Dan; Bao, Lei] Beijing Jiaotong Univ, Dept Phys, Beijing, Peoples R China.
通讯机构：
[Bao, Lei] O;[Bao, Lei] B;Ohio State Univ, Dept Phys, 174 W 18th Ave, Columbus, OH 43210 USA.;Beijing Jiaotong Univ, Dept Phys, Beijing, Peoples R China.
关键词：
assessment context;control of variables;multiple variable reasoning;progression of reasoning;scientific reasoning
摘要：
Scientific reasoning is an important component under the cognitive strand of the 21st century skills and is highly emphasized in the new science education standards. This study focuses on the assessment of student reasoning in control of variables (COV), which is a core sub-skill of scientific reasoning. The main research question is to investigate the extent to which the existence of experimental data in questions impacts student reasoning and performance. This study also explores the effects of task contexts on student reasoning as well as students' abilities to distinguish between testability and causal influences of variables in COV experiments. Data were collected with students from both USA and China. Students received randomly one of two test versions, one with experimental data and one without. The results show that students from both populations (1) perform better when experimental data are not provided, (2) perform better in physics contexts than in real-life contexts, and (3) students have a tendency to equate non-influential variables to non-testable variables. In addition, based on the analysis of both quantitative and qualitative data, a possible progression of developmental levels of student reasoning in control of variables is proposed, which can be used to inform future development of assessment and instruction. (C) 2015 Elsevier Ltd. All rights reserved.
作者机构：
[Jiang Jian] Huazhong Normal Univ, Complex Sci Ctr, Wuhan 430079, Peoples R China.;[Jiang Jian] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.;[Wang Ru; Jiang Jian; Alexandre, Wang Qiuping] Inst Super Mat & Mecan Avances, F-72000 Le Mans, France.;[Jiang Jian; Alexandre, Wang Qiuping; Michel, Pezeril] Univ Maine, UMR 6283, IMMM, F-72085 Le Mans, France.;[Jiang Jian] Wuhan Text Univ, Coll Math & Comp Sci, Wuhan 430200, Peoples R China.
通讯机构：
[Jiang Jian] H;Huazhong Normal Univ, Complex Sci Ctr, Wuhan 430079, Peoples R China.
摘要：
A remarkable phenomenon in the time evolution of many networks such as cultural, political, national and economic systems is the recurrent transition between the states of union and the division of nodes. We propose a phenomenological modeling, inspired by the maxim "long union divides and long division unites" to investigate the evolutionary characters of these networks composed of the entities whose behaviors are dominated by these two events. The nodes are endowed with quantities such as identity, ingredient, richness (power), openness (connections), age, distance, and interaction, which determine collectively the evolution in a probabilistic way. Depending on a tunable parameter, the time evolution of this model is mainly an alternative domination of union or division state, with a possible state of final union dominated by one single node.
作者机构：
[Deng, Weibing; Wang, Q. A.; Allahverdyan, Armen E.] ISMANS, Lab Phys Stat & Syst Complexes, F-72000 Le Mans, France.;[Allahverdyan, Armen E.] Yerevan Phys Inst, Yerevan 375036, Armenia.;[Deng, Weibing; Wang, Q. A.] Univ Maine, UMR CNRS 6283, IMMM, F-72085 Le Mans, France.;[Deng, Weibing] Hua Zhong Normal Univ, Complex Sci Ctr, Wuhan 430079, Peoples R China.;[Deng, Weibing] Hua Zhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
通讯机构：
[Allahverdyan, Armen E.] I;ISMANS, Lab Phys Stat & Syst Complexes, 44 Ave Bartholdi, F-72000 Le Mans, France.
摘要：
Zipf's law is the major regularity of statistical linguistics that has served as a prototype for rank-frequency relations and scaling laws in natural sciences. Here we show that Zipf's law—together with its applicability for a single text and its generalizations to high and low frequencies including hapax legomena—can be derived from assuming that the words are drawn into the text with random probabilities. Their a priori density relates, via the Bayesian statistics, to the mental lexicon of the author who produced the text.
