A Pervasive Approach to EEG-Based Depression Detection.Hanshu Cai,Jiashuo Han,YunfeiChen,Xiaocong Sha,Ziyang Wang,Bin Hu,Jing Yang,Lei Feng,Zhijie Ding,YiqiangChen &Jürg Gutknecht -2018 -Complexity 2018:1-13.detailsNowadays, depression is the world’s major health concern and economic burden worldwide. However, due to the limitations of current methods for depression diagnosis, a pervasive and objective approach is essential. In the present study, a psychophysiological database, containing 213 subjects, was constructed. The electroencephalogram signals of all participants under resting state and sound stimulation were collected using a pervasive prefrontal-lobe three-electrode EEG system at Fp1, Fp2, and Fpz electrode sites. After denoising using the Finite Impulse Response filter combining the Kalman (...) derivation formula, Discrete Wavelet Transformation, and an Adaptive Predictor Filter, a total of 270 linear and nonlinear features were extracted. Then, the minimal-redundancy-maximal-relevance feature selection technique reduced the dimensionality of the feature space. Four classification methods distinguished the depressed participants from normal controls. The classifiers’ performances were evaluated using 10-fold cross-validation. The results showed thatK-Nearest Neighbor had the highest accuracy of 79.27%. The result also suggested that the absolute power of the theta wave might be a valid characteristic for discriminating depression. This study proves the feasibility of a pervasive three-electrode EEG acquisition system for depression diagnosis. (shrink)
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Optimization of IoT-Based Motion Intelligence Monitoring System.Jian Qiao,Zhendong Zhang &EnqingChen -2021 -Complexity 2021:1-10.detailsWe design and implement an intelligent IoT-based motion monitoring system to realize the monitoring of three important parameters, namely, the type of movement, the number of movements, and the period of movement in physical activities, and optimize the system to support the simultaneous use by multiple users. Considering the motion monitoring scenario for smart fit, the framework of an IoT-based motion monitoring system is proposed. The framework contains components such as active acquisition nodes, wireless access points, data processing servers, and (...) terminals. In terms of algorithm optimization, research related to active pattern recognition and periodic calculation methods is conducted. For active pattern recognition, two types of classification algorithms with different complexity are proposed based on Support Vector Machine and deep neural networks, respectively, to adapt to scenarios with different computational capabilities. For period calculation, a method based on over-zero detection and wavelet transform is proposed to count the number of actions and calculate the period of each action. In 100 times action cycle calculation experiments, the count statistic calculation method achieves 100% calculation accuracy and the active cycle calculation results are close to the real value, which proves the effectiveness of the cycle calculation method. The system provides a multiuser-oriented communication method and realizes accurate and reliable human movement monitoring, which has a wide application prospect in the fields of physical education and rehabilitation training. (shrink)
Authoring Selves in Language Teaching: A Dialogic Approach to Language Teacher Psychology.ShanChen,Lawrence Jun Zhang &Judy M. Parr -2022 -Frontiers in Psychology 13.detailsThe teacher self is a composite psychological construct which encompasses the cognitive, affective, emotional, and social dimensions of teaching. This qualitative study draws on Bakhtin’s concepts of dialogism, answerability, and addressivity to discuss how English language teachers negotiated the shifting and conflictive context to construct selves in relation to the promoted communicative language teaching approach. Based on narrative interviews and classroom observations with five tertiary English teachers in China, we found that these teachers were actively engaged in the dialog with (...) their prior learning experiences and active, responsive in answering their contexts while authoring selves in everyday teaching practice. The multiple-case study data support a Bakhtinian understanding that teachers are active users and producers of theory in their own right, highlighting teachers’ agency, creativity, and autonomy. Based on Bakhtin’s dialogism and the case study findings, we bring cognition, identity and practice together and conceptualize the teacher self as having multiple facets and layers: the autobiographical self, the discursive self, and the pedagogical self. The three selves are constitutive of the consummated whole of the teacher self instead of being separate entities functioning individually. The study is concluded with implications for language teacher education and teacher development. (shrink)
Smooth Infinitesimals in the Metaphysical Foundation of Spacetime Theories.LuChen -2022 -Journal of Philosophical Logic 51 (4):857-877.detailsI propose a theory of space with infinitesimal regions called smooth infinitesimal geometry based on certain algebraic objects, which regiments a mode of reasoning heuristically used by geometricists and physicists. I argue that SIG has the following utilities. It provides a simple metaphysics of vector fields and tangent space that are otherwise perplexing. A tangent space can be considered an infinitesimal region of space. It generalizes a standard implementation of spacetime algebraicism called Einstein algebras. It solves the long-standing problem of (...) interpreting smooth infinitesimal analysis realistically, an alternative foundation of spacetime theories to real analysis, 277–392, 1980). SIA is formulated in intuitionistic logic and is thought to have no classical reformulations. Against this, I argue that SIG is such a reformulation. But SIG has an unorthodox mereology, in which the principle of supplementation fails. (shrink)
Reasoning with uncertain categories.Gregory L. Murphy,Stephanie Y.Chen &Brian H. Ross -2012 -Thinking and Reasoning 18 (1):81 - 117.detailsFive experiments investigated how people use categories to make inductions about objects whose categorisation is uncertain. Normatively, they should consider all the categories the object might be in and use a weighted combination of information from all the categories: bet-hedging. The experiments presented people with simple, artificial categories and asked them to make an induction about a new object that was most likely in one category but possibly in another. The results showed that the majority of people focused on the (...) most likely category in making inductions, although there was a group of consistently normative responders who used information from both categories (about 25% of our college population). Across experiments the overall pattern of results suggests that performance in the task is improved not by understanding the underlying principles of bet-hedging but by increasing the likelihood that multiple categories are in working memory at the time of the induction. We discuss implications for improving everyday inductions. (shrink)
Zheng ju fa xue.Chongyi Fan,HaiguangChen &Zhengjie Suo (eds.) -2001 - Beijing: Fa lü chu ban she.details本书介绍了证据法学的基本知识、基本理论,并以科学性、准确性为原则来解决实务问题。.
Object and event concepts: A cognitive mechanism of incommensurability.XiangChen -2003 -Philosophy of Science 70 (5):962-974.detailsIn this paper I examine a cognitive mechanism of incommensurability. Using the frame model of concept representation to capture structural relations within concepts, I reveal an ontological difference between object and event concepts: the former are spatial but the latter temporal. Experiments from cognitive sciences further demonstrate that the mind treats object and event concepts differently. Thus, incommensurability can occur in conceptual change across different ontological categories. I use a historical case to illustrate how the ontological difference between an object (...) and an event concept actually caused incommensurability in the context of nineteenth‐century optics. The cognitive and historical analyses indicate that incommensurability can be a local phenomenon and does not necessarily imply incomparability. (shrink)
Paul Auster and August Brill’s solitary rooms: the spatiality of solitude.RuChen,Song Liu,Jiaxin Lin &Muhammad Khail Kan -2022 -Trans/Form/Ação 45 (4):183-204.detailsResumo: Para Paul Auster, um quarto é, em essência, “a própria substância da solidão”, uma solidão espacialmente definida. Nesse sentido, o fenômeno transcendeu suas limitações físicas e assumiu significado existencial e filosófico. Em seus escritos, uma sala é, antes de tudo, um espaço arquitetônico que um escritor solitário ocupa; além disso, é metaforizado como a mente que é a sala - um espaço construído intelectualmente; e, por fim, é um lugar narrado em suas histórias, onde seus personagens meditam e compõem, (...) um espaço que existe em palavras. O artigo realiza estudos sobre os escritos da vida de Auster e uma de suas ficções, Homem no Escuro, para apresentar a complexidade das três formas de quartos solitários e sua mútua inclusão na solidão intersubjetiva. (shrink)
(Mis)communication through stickers in online group discussions: A multiple-case study.QianChen,Susan C. Herring,Khe Foon Hew &Ying Tang -2021 -Discourse and Communication 15 (5):582-606.detailsSticker use is an increasingly popular part of daily messaging activity. However, little is known regarding the types, functions, and outcomes of sticker use in authentic online communications. To investigate these phenomena, we analysed sticker use in five small mobile-messaging-facilitated discussion groups initiated by students for course projects in an Asian university. The students used four types of stickers, among which ‘animated picture without text’ was the most frequent. Sticker functions fell into two main categories: as a tone indicator with (...) scope over a textual message, and as a stand-alone illocutionary act. Based on interviews with seven participants, we found disparities between the sender’s intention and the receiver’s interpretation for 34.7% of the stickers, but these disparities did not adversely affect the communication. Implications of the findings are discussed. (shrink)
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Pharmaceutical Sales Representatives in the United States and China: The Need for Professional Public Space.XiaoyingChen -2021 -Health Care Analysis 30 (1):35-56.detailsPharmaceutical sales representatives (PSRs) are one of the most frequently used drug information sources for physicians in both the United States and China. During face-to-face interactions, PSRs use various promotional strategies to impact the prescribing behavior. In the United States, PSRs provide physicians small gifts, free drug samples, and “sincere friendships”, whereas in China, they played an indispensable role in medical corruption over the past three decades. To cope with the undue influence of PSRs, both these countries have taken positive (...) but insufficient measures to eliminate the effect thus far. By comparing the strategies of American and Chinese PSRs, it was found that building a friendly personal relationship with physicians in a relatively closed private environment (such as physician’s office) is a key factor to exert an individualized influence on physicians, even in different social backgrounds and healthcare contexts. Therefore, this essay suggests that it is necessary to limit the establishment of personal relationships and maintain a more professional interaction to reduce the personalized psychological and emotional influences on physicians’ professional judgment. To achieve this goal, it is proposed to transfer the physician-PSR interaction to a professional public space as a supplement to current countermeasures and suggestions. The presence of others and the possibility of third party participation will stimulate more ethical and reputational concerns. It is hoped that the increased transparency of the interaction will promote participants to consider more professional norms and mitigate the undue influence of PSRs’ individualized strategies. (shrink)
Rasch Analysis of Work-Family Conflict Scale Among Chinese Prison Police.WeiChen,Guyin Zhang,Xue Tian,Li Wang &Jie Luo -2021 -Frontiers in Psychology 12.detailsAs a special group of police officer, prison police have to endure more work stress and have significant work-family conflict, which may lead to more physical and mental health problems and need to be noticed by the society. The Work-Family Conflict Scale is a brief self-report scale that measures the conflict that an individual experiences between their work and family roles and the extent they interfere with one another. However, there is limited data on the scale’s psychometric properties. The aim (...) of this study was to examine the dimensionality and reliability of the Chinese version of the WFCS. The study sample was made up of a total of 717 Chinese prison police. The Rasch Rating Scale Model was used to determine the latent structure and estimate the quality of items and reliability of scale. The principle component analysis showed that the assumption of unidimensionality was fulfilled. The infit and outfit mean square statistics were of a reasonable range, and point-measure correlations indicted good model fit of each item. The item-person separation and reliability indices both met psychometric standards, illustrating good reliability. The person-item map indicated acceptable fit of items and persons, suggesting an alignment between persons and items. In addition, no evidence emerged of differential item functioning across different gender groups. Overall, the WFCS has good reliability and validity, and can be used to accurately evaluate the level of work-family conflict in Chinese prison police. (shrink)
A different kind of revolutionary change: transformation from object to process concepts.XiangChen -2010 -Studies in History and Philosophy of Science Part A 41 (2):182-191.detailsI propose a new perspective with which to understand scientific revolutions. This is a conversion from an object-only perspective to one that properly treats object and process concepts as distinct kinds. I begin with a re-examination of the Copernican revolution. Recent findings from the history of astronomy suggest that the Copernican revolution was a move from a conceptual framework built around an object concept to one built around a process concept. Drawing from studies in the cognitive sciences, I then show (...) that process concepts are independent of object concepts, grounded in specific regions of the brain and involving unique representational mechanisms. There are cognitive obstacles to the transformation from object to process concepts, and an object bias—a tendency to treat processes as objects—makes this kind of conceptual change difficult. Consequently, transformation from object to process concepts is disruptive and revolutionary. Finally, I explore the implications of this new perspective on scientific revolutions for both the history and philosophy of science.Keywords: Scientific revolutions; Process concepts; Object concepts; Object bias; Copernican revolution. (shrink)
Corporate Social Responsibility and NGO Directors on Boards.ShiliChen,Niels Hermes &Reggy Hooghiemstra -2020 -Journal of Business Ethics 175 (3):625-649.detailsIn the years 2009 to 2016, approximately 35% of Standard & Poor’s (S&P) 500 firms had at least one director with a professional background in private, not-for-profit organizations (NGO director). Yet research provides little guidance on what kind of firms are more likely to have NGO directors on their boards, neither do we know these directors’ effects on firm strategic outcomes. Our study examines the above two questions in the context of corporate social responsibility (CSR), taking the lens of resource (...) dependence theory. Results from an analysis of all firms included in the S&P 500 index between 2010 and 2016 show that the number of NGO directors serving on a firm’s board in a certain year is positively related to the extent to which the firm displays poor CSR performance in the prior year. We also find that NGO directors on boards are not associated with immediate improvements in CSR performance; rather, their positive influence on CSR performance takes hold after 3 years. Our findings suggest that whereas NGO directors may potentially be appointed to a firm’s board for legitimization reasons, these directors are associated with enhanced CSR performance in the long term. (shrink)
RETRACTED ARTICLE: Robust Model Selection and Estimation for Censored Survival Data with High Dimensional Genomic Covariates.GuorongChen,Sijian Wang,Guannan Sun &Huanxue Pan -2019 -Acta Biotheoretica 67 (3):225-251.detailsWhen relating genomic data to survival outcomes, there are three main challenges that are the censored survival outcomes, the high-dimensionality of the genomic data, and the non-normality of data. We propose a method to tackle these challenges simultaneously and obtain a robust estimation of detecting significant genes related to survival outcomes based on Accelerated Failure Time model. Specifically, we include a general loss function to the AFT model, adopt model regularization and shrinkage technique, cope with parameters tuning and model selection, (...) and develop an algorithm based on unified Expectation–Maximization approach for easy implementation. Simulation results demonstrate the advantages of the proposed method compared with existing methods when the data has heavy-tailed errors and correlated covariates. Two real case studies on patients are provided to illustrate the application of the proposed method. (shrink)
Service evaluation: A grey area of research?Lu-Yen A.Chen &Tonks N. Fawcett -2019 -Nursing Ethics 26 (4):1172-1185.detailsThe National Health Service in the United Kingdom categorises research and research-like activities in five ways, such as ‘service evaluation’, ‘clinical audit’, ‘surveillance’, ‘usual practice’ and ‘research’. Only activities classified as ‘research’ require review by the Research Ethics Committees. It is argued, in this position paper, that the current governance of research and research-like activities does not provide sufficient ethical oversight for projects classified as ‘service evaluation’. The distinction between the categories of ‘research’ and ‘service evaluation’ can be a grey (...) area. A considerable percentage of studies are considered as non-research and therefore not eligible to be reviewed by the Research Ethics Committee, which scrutinises research proposals rigorously to ensure they conform to established ethical standards, protecting research participants from harm, preserving their rights and providing reassurance to the public. This article explores the ethical discomfort potentially inherent in the activity currently labelled as ‘service evaluation’. (shrink)
Philosophy of Vocational Education in China: A Historical Overview.Carsten Schmidtke &PengChen -2012 -Journal of Philosophy of Education 46 (3):432-448.detailsHistorically, Chinese educational philosophy has been dominated by Confucianism and, since 1949, by Marxism. However, rapid industrialization, ideological demands, and loyalty to traditions have now led to a situation where various Western philosophies have been adopted into vocational education in hopes of moving the country forward without challenging the status quo too vigorously. The result is that China presently has no clear philosophical foundation that can help the country make solid decisions on how vocational education shall contribute to economic growth (...) and social improvements. Awareness of one's philosophy, however, is important for vocational educators so that they can make well-founded decisions about their teaching. The authors hope that by presenting an overview of which philosophies have been adopted in the past and the influence they have had on practitioners and policymakers, scholars can engage in a debate on which vocational education philosophy can help train China's workforce most effectively and support continued economic growth. (shrink)
The differences of addiction causes between massive multiplayer online game and multi user domain.Jengchung V.Chen &Yangil Park -2005 -International Review of Information Ethics 4 (5):53-60.detailsThis paper proposes research propositions to study on MMOG and MUD addictions based on their causes – flow state and social interaction. Though previous studies relate MMOG addictions to Internet addictions based on social interactions, this study after examining the underlying theories of Use and Gratification The-ory and Flow Theory concludes that what cause MMOG addiction is flow experience not social interaction. On the other hand, the cause of MUD addiction is social interaction. After proposing the propositions of MUD and (...) MMOG addiction causes, this study provides possible impacts of such addictions based on the reasoning between the two theories and two online game addictions. (shrink)
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