Unsustainable HR practices impose illegitimate tasks on employees due to a shortage of resources. These illegitimate tasks bring counterproductive work behavior in terms of workplace incivility that creates a sense of ostracism in employees. To address these issues, the study examined the relationship among unsustainable HR practices in terms of illegitimate tasks and workplace ostracism. Whereas workplace incivility is defined as an underlying reason through which this association exists. Adopting a theoretical framework from earlier research, the study used cross-sectional data (...) and subsequently a method of quantitative research, and the sample comprised permanent faculty members of private universities in Pakistan working in different departments with different role titles. Smart PLS was applied to run multiple statistics analyzed on the obtained data. The results from the study supported the hypothesis by depicting a positive and significant association between illegitimate tasks and workplace ostracism. Further, workplace incivility was playing the mediating role between illegitimate tasks and workplace ostracism. The results from the study carry significant implications for managers and researchers. Recommendations and future research directions are also discussed in the paper. (shrink)

The evolution of Web 2.0 and social networks has led to the increased use of enterprise social media platforms, making online interactions more common in organizations. However, few studies have researched online interactions in organizational context. This study addressed this gap using two research phases: a qualitative phase and a quantitative phase. The qualitative study phase identified two dimensions of online interaction: employee–employee online interaction and employee–platform online interaction. The employee–employee online interaction assessed responsiveness and suitability. The employee–platform online interaction (...) assessed usefulness, applicability, and ease of use. The quantitative study phase applied a proposed conceptual framework derived from the qualitative study to create and validate measures for a new online interaction scale. This was done using a systematic scale development process. Measuring online interaction can help drive future quantitative research, providing an instrumental basis for further exploring the scientific management practice elements that govern employee psychology and behavior in cyberspace. (shrink)

Ben shu gong you ba jiang zu cheng, fen bie shi sheng ren bi ke xue er zhi, Wang Yangming de xin xue ti xi, shi gong yu bing xue, wen xue si xiang yu shi wen chuang zuo, jiao yu si xiang yu shi jian, Yangming hou xue, Yangming xue zai jin xian dai de ying xiang, Yangming wen hua yu Guizhou lü you. Mei ge lun ti lun shu ji zhong, shen du shi zhong, xu shu xing yu (...) yan tong su liu chang, gu shi xing qiang, hen shi he da zhong du zhe yue du. wei qi fa du zhe si kao, zeng qiang yue du xiao guo, zai mei yi jiang zhi hou shi liang she zhi le yi xie ming ci jie shi, jian da tao lun ti. ling pei he xiang guan wen zi, she zhi le yi xie tu pian, bei ke he Yangming shu fa zuo pin deng, ju you ji jia de guan shang xing. (shrink)

Decision-making competence refers to the ability to make better decisions, as defined by decision-making principles posited by models of rational choice. The adult decision-making competence (A-DMC) scale is a relatively mature evaluation tool used for decision-making competence. However, the A-DMC is yet far from other mature psychological evaluation tools, and especially the structure of A-DMC remains unclear. In the current study, we estimated a regularized partial correlation network of decision-making competence in a Chinese sample consisting of 339 adults who were (...) evaluated by the A-DMC, and then the centrality indicators were calculated. The results revealed that all nodes of the decision-making competence networks are positively associated, except for the association of resistance to framing (RF) and resistance to sunk costs (SC). The strongest edge was between RF and applying decision rules (DR; regularized partial correlation = 0.37). The centrality indicators of RF and applying DR were highest, revealing that these two variables may play important roles in the decision-making competence network. Our study conceptualizes the decision-making competence from network perspectives, so as to provide some insights for future researches. (shrink)

Mismatch negativity of event-related potentials is a biomarker reflecting the preattentional change detection under non-attentional conditions. This study was performed to explore whether high self-related information could elicit MMN in the visual channel, indicating the automatic processing of self-related information at the preattentional stage. Thirty-five participants were recruited and asked to list 25 city names including the birthplace. According to the difference of relevance reported from the participants, we divided names of the different cities into high, medium, and low self-related (...) information. Visual MMN was elicited by high self-related information but not by medium self-related information, with an occipital–temporal scalp distribution, indicating that, under non-attentional condition, high self-related information can be effectively processed automatically in the preattentional stage compared with low self-related information. These data provided new electrophysiological evidence for self-related information processing. (shrink)

The mammalian dentition is a segmented organ system with shape differences among its serially homologous elements (individual teeth). It is believed to have evolved from simpler precursors with greater similarities in shape among teeth, and a wealth of descriptive data exist on changes to the dentition that have occurred within mammals. Recent progress has been made in determining the genetic basis of the processes that form an individual tooth, but patterning of the dentition as a whole (i.e. the number, location (...) and shape of the teeth) is less well understood. In contrast to similarly organized systems, such as the vertebral column and limb, Hox genes are not involved in specifying differences among elements. Nevertheless, recent work on a variety of systems is providing clues to the transcription factors and extracellular signalling molecules involved. (shrink)

The purpose of this study is to explore why workplace deviance behavior among employees has increased during Corona Virus Disease 2019 from the perspective of insecure attachment style. Based on attachment theory, we propose and test the effect of insecure attachment style on deviance behavior via organization-based self-esteem using 422 data from Chinese employees. And we further examine the moderating role of leader–member exchange in reducing workplace deviance behavior. The findings show that attachment anxiety and attachment avoidance are both positively (...) related to workplace deviance behavior. Attachment anxiety and attachment avoidance both indirectly predict organizational deviance behavior through organization-based self-esteem. Moreover, leader–member exchange can moderate the indirect effects of both attachment anxiety and attachment avoidance on organizational deviance behavior via organization-based self-esteem. This research highlights the fact that employees with insecure attachment style need more care from the organization during the COVID-19 pandemic and demonstrates that one of the key ways in which insecure attachment style increases organization-based self-esteem is by facilitating the development of high-quality leader–member exchange. (shrink)

This study presents an evolutionary game to model interactions among stakeholders with potential conflicts, including the operational enterprise of incineration plant, the local government, and the residents nearby. System dynamics is used to simulate the change of strategic actions corresponding to the three players, in order to seek for the evolutionary stability strategies. A numerical case is proposed to demonstrate the game theory application, in which the impacts of governmental incentive and punishment on the player’s actions are investigated. The results (...) indicated that administrative penalty is effective not only in motivating the enterprises to upgrade treatment facilities for ensuring environmental quality but also in helping the local government and residents to approach dominant strategies. Policy implications are given based on the results to lay out a foundation for the alleviation of the conflicts. (shrink)

As an excellent management tool, service guarantee can improve the competitive advantage of enterprises and allow consumers to obtain high-quality products and services. However, in the current Chinese context, this tool has not played its proper function. One important reason is the perception deviation of Chinese consumers. This research analyzes the main reasons for this deviation, puts forward related hypotheses and research models, and discusses the influence of disposition to trust of contract, perceived structural assurance, and subjective norm on service (...) guarantee perception. Also, this study discusses SGP of customers through perceived risk and quality. Through the verification of 574 sample data, the main conclusions are as follows: Disposition to trust of contract, subjective norms, and PSA significantly affect SGP positively; SGP positively affects customer value ; and SGP s are obviously different between people of different ages, education levels, and income levels. Hopefully, these conclusions can have the following enlightenment to enterprises serving Chinese consumers: in the designing stage of service guarantee, perception of customers of this guarantee should be a consideration; CUV can be a proper direction if an enterprise wish to lead the guarantee perception of the customer; Not all products need the same level of service guarantee; and The proper service guarantee level depends on various statistical characteristics of target customers of the service. (shrink)

ObjectivesPrevious studies on negative workplace gossip have neglected the role of gossip targets of supervisors. The purpose of this paper is to deepen our understanding of how subordinates’ negative workplace gossip affects supervisors’ work-related behaviors. Drawing upon conservation of resource theory, the authors propose that subordinates’ negative gossip leads to supervisor emotional exhaustion. In turn, such emotional exhaustion provokes supervisors to exhibit undermining toward their subordinates. Additionally, the authors propose that a trait factor, namely, supervisor mindfulness, mitigates the relationship between (...) such negative workplace gossip and supervisors’ emotional exhaustion.MethodData were collected from employees and their immediate supervisors in 35 organizations located in Jiangsu and Anhui Provinces in China. The data were obtained at three time points, each time interval was 2 weeks, and finally, 362 valid data points were obtained.ResultsThe following findings were obtained: perceived subordinates’ negative gossip has a significant positive effect on supervisor undermining; supervisor emotional exhaustion mediates the relationship between perceived subordinates’ negative gossip and supervisor undermining; and supervisor mindfulness moderates the relationship between perceived subordinates’ negative gossip and supervisor emotional exhaustion and moderates the mediating effect of supervisor emotional exhaustion on the relationship between perceived subordinates’ negative gossip and supervisor undermining.ConclusionUsing multisource data and a moderated mediation model, we found that subordinates’ negative workplace gossip predicts supervisor undermining through supervisor emotional exhaustion. We also discovered that supervisor mindfulness can buffer the positive relationship between perceived subordinates’ negative workplace gossip and supervisor undermining. These findings have important implications for the literature on negative gossip in the workforce, especially the impact of subordinates’ negative workplace gossip on supervisors’ responses. (shrink)

內容簡介 先秦兩漢儒家思想的發展，經歷一個高低起伏的歷史，值得重新注視。加上近年利用出土文獻的大量發現和整理，重寫先秦兩漢思想史的呼聲高唱入雲。本書各篇文章多能利用最新出土文獻，並浸潤於傳世文獻中，以求對此段思 想大潮加以析述。全書共收文章十九篇，主題圍繞先秦兩漢思想與教育為主，開啟了二千年來以儒家思想為主流的中國文化。.

We prove the Decomposability Conjecture for functions of Baire class $2$ from a Polish space to a separable metrizable space. This partially answers an important open problem in descriptive set theory.

Exploring the amplitude modulation phenomenon of chaotic signal has become a subject of great concern in recent years. This paper mainly concentrates on the preliminary study on amplitude modulation principle of a chaotic system. First, two 3D chaotic systems with quadratic product terms are introduced for studying the amplitude modulation phenomenon of chaotic signal. It is found that the signal amplitude of the first system can be controlled by partial quadratic coefficient. But for the second system, none of nonlinear coefficient (...) can be employed to control the signal amplitude. Then, the amplitude modulation principle of chaotic system is preliminarily studied by exploring the intrinsic relationship between nonzero equilibrium point and phase space trajectory, and it is further validated by introducing unified parameter to the two 3D chaotic systems. As a necessary condition, the principle provides a feasible and simple method for constructing and analyzing an amplitude modulation chaotic system. (shrink)

Increasing rates of obesity have fueled interest in the factors underlying food choice. While epidemiological studies report that disadvantaged social groups exhibit a higher incidence of obesity, causal evidence for an effect of social contexts on food choice remains scarce. To further our knowledge, we experimentally investigated the effect of disadvantageous social context on food choice in healthy, non-dieting participants. We used three established experimental methods to generate social contexts of different valence in controlled laboratory settings: (i) receiving varying amounts (...) of money in a Dictator Game (DG; n = 40), (ii) being included or excluded in a Cyberball Game (CBG; n = 35), and (iii) performing well, average, or poorly in a response time ranking task (RTR; n = 81). Following exposure to a particular social context, participants made pairwise choices between food items that involved a conflict between perceived taste and health attributes. In line with previous research, stronger dispositional self-control, greater cognitive control of eating behavior, and lower external eating (all assessed via questionnaires) were associated with healthier food choices. As expected, being treated unfairly in the DG, being excluded in the CBG, and performing poorly in the RTR led to negative emotions. However, we did not find an effect of the induced social context on food choice in any of the experiments, even when taking into account individual differences in participants' responses to the social context. Our results suggest that-at least in controlled laboratory environments-the influence of disadvantageous social contexts on food choice is limited. (shrink)

The joint multifractal analysis is usually conducted in two different variables for their cross-correlations but rarely used for two records of one variable collected at two different places. It is important for the detection of change in multifractality in space. Besides, the cross-correlations in two analyzed series make the analysis of sources of joint multifractality difficult. There are few studies on the source of joint multifractality. We focus on the two issues for two level records at pairs of adjacent sites (...) along one river and carry out an extension of our previous work which is about the single multifractality of one record with the same data set. The data set is collected from 10 observation stations of a northern China river and contains about two million high-frequency river level records. Results of joint multifractal analysis via multifractal detrended cross-correlation analysis show that the change in joint multifractality at pairs of adjacent sites caused by weak cross-correlations can be detected by comparing the single generalized Hurst exponent with the joint scaling exponent function and reveal the effects of human activities on joint multifractality. This analysis provides an approach for detecting the change in multifractality. Following the idea of our previous work, two robust hypothesis tests via a set of pairs of surrogate series are proposed for the source testing of joint multifractality. The analysis of the effects of cross-correlations is carried out via a proposed simultaneously half-shifting technique which can both minimize the cross-correlations between original series and make full use of records. Results of source analysis show not only the effects of autocorrelations in series and probability distribution of river levels but also the effects of cross-correlations between series. (shrink)

The capacitive voltage transformer is a special measuring and protecting device, which is commonly applied in high-voltage power systems. Its measurement accuracy is affected seriously by the stray capacitances of the capacitance voltage divider to ground and other charged parts. In this study, based on the boundary element method, a mathematical model was established firstly to calculate the stray capacitance. Then, the voltage distribution of the CVD was obtained by the CVD’s equivalent circuit model. Next, the effect of stray capacitance (...) on the voltage distribution and the voltage difference ratio of CVD was analysed in detail. We finally designed three types of shield and optimized their structure parameters to reduce VDR. The results indicated that the average deviation rate between calculated and experimental measured voltages is only 0.015%; that is to say, the method has high calculation precision. The stray capacitance of the CVD to ground is far larger than that of the CVD to the high-voltage terminal. It results in the inhomogeneous distribution of voltage and the increase of VDR. For the test CVT, its VDR exceeds the requirement of class 0.2. Among all of the three types of shield, the C type reduced the VDR of the test CVT the most. After optimizing the structure parameters of C-type shield, the VDR is further reduced to 0.08%. It is not only in accord with the requirement of class 0.2 but also has an adequate margin. (shrink)

This research performed four experiments to investigate the influence of infant schema cues on charitable donation intention and examine the moderating effect of gender. The results indicate that: individuals stimulated by infant schema cues had a higher willingness to donate when facing charity promotion; the main effect was not due to the perceived cuteness of character in posters; empathy played an entirely mediating role in the relationship between infant schema cues and donation intention; gender moderated the influence of infant schema (...) on donation intention: infant schema cues are effective for improving females’ donation intention, but ineffective for males. These findings contributed to the literature on infant schema and provide practical significance for introducing infant schema in charity promotion. (shrink)

Scholars are the main force behind academic entrepreneurship. The method of how to stimulate scholars’ academic entrepreneurial intention and how to further promote social and economic development are important questions for the academic community. Research on the “net effect” of the factors affecting academic entrepreneurial intention has achieved some theoretical results. However, the results that affect academic entrepreneurial intention are complex and not influenced by a single factor, but rather by the interaction between various factors. Therefore, this study used a (...) fuzzy set qualitative comparative analysis research method to explore how various factors can affect scholars’ academic entrepreneurial intention from two dimensions: the Big Five personality traits and academic entrepreneurial motivation. Our findings showed two configurations that affect high academic entrepreneurial intention of university scholars: the openness to experience—ribbon—dominant path, and the ribbon—dominant path. Additionally, two configurations were revealed for the formation of not-high academic entrepreneurial intention: extraversion—conscientiousness—inhibition and extraversion—agreeableness—gold—hindrance paths. Moreover, this study revealed that a causal asymmetry exists between the high and the not-high academic entrepreneurial intention configurations. This study broadens the application of the fuzzy set qualitative comparative analysis method in the research of academic entrepreneurial intention and provides theoretical and practical insights for researchers and practitioners on how to effectively stimulate scholars’ academic entrepreneurial intention. (shrink)

本书的重点是谈作者对波普尔的看法,主要包括对波普尔思想的理解和对波普尔思想的评论和批评两部分。.

This paper presents an overall view of the Philosophy of Tian-xia, a particular form of neo-universalism developed by its author and very much debated in the last years. The system of Tian-xia, or ‘all-under-heaven’, is a philosophical re-elaboration of an ancient form of Chinese universalism. The world is constituted as a global unity and a basic concept of political philosophy. It aims at a world institution as a way to rethink all problems in the world as problems of the world. (...) Zhao Tingyang has analytically developed this view in some recent publications in Chinese. This article represents the most recent attempt to provide a synthetic view of his philosophy of ‘all-under-heaven’. (shrink)

Since the beginning of the twentieth century, Chinese scholars have tended to traditional Chinese learning split apart and rearrange it according to the systematics of modern Western academic disciplines. By examining the meaning of Western "philosophy" and "ethics," it is demonstrated that Western and Chinese learning should not be lumped together according to the same systematics. Moreover, classical Chinese learning has always had its own complex systematics and its own long tradition, and it has undergone constant development over time. Thus, (...) it is well beyond any criticism that may be leveled at it from the standpoint of Western systematics. Even so, modern Chinese intellectuals have become accustomed to understanding classical Chinese learning through a Western prism. (shrink)

According to the differences in the spatial-temporal co-location of human individuals, Alfred Schutz divided the contemporaneous lifeworld into two major realms: the realm of consociates made up of individuals sharing a community of space and a community of time, and the realm of contemporaries made up of individuals sharing neither a community of space nor a community of time. Extending Schutz''s phenomenological analysis to cyberspace, this paper delineates an emergent third realm – the realm of consociated contemporaries, in which individuals (...) share a community of time without sharing a community of space. A central argument of this paper is that the emergence of this social domain in cyberspace reconfigures the structure of the lifeworld by creating a new spatial-temporal condition of human contact, which gives rise to a new mode of human interaction and a new form of human relationship. The revolution of electronic communication is therefore a revolution of the ways in which human individuals come to construct we-relationships with one another in shared meaning contexts. (shrink)

Conceptual art plays a crucial and continuous role in the generation and development of contemporary art, and thus is also the reference point of contemporary art. Conceptual art is an art centered on ideas, and it is dominated by the use of language. These two characteristics have induced three important tendencies of de-materialization, anti-formalism, and anti-visual aesthetics in contemporary art. It is these three tendencies that have led to a new understanding and evaluation of the value of work or labor (...) in contemporary art. Put briefly, contemporary artists pay more attention to the concept value, process value, and Complex Polysensoriality value of art work, rather than the physical object value, commodity value, and visual aesthetic value in the past. These changes are not only caused by art itself, but also have root and basis in techonology, philosophy, society, and the existing condition of human beings, which raises further questions. (shrink)

Seepage analysis is always a concern in dam safety and stability research. The prediction and analysis of seepage pressure monitoring data is an effective way to ensure the safety and stability of dam seepage. With the timeliness of a change in a monitoring value and lag due to external influences, a RS-LSTM model written in Python is developed in this paper which combines rough set theory and the long- and short-term memory network model. The model proposed calculates the prediction score (...) of the seepage pressure of a dam experiencing multiple effects by preordering factor importance values to eliminate the interference of redundant factors. A case study shows that the water level, rainfall, temperature, and duration are all factors that affect the seepage pressure, and their importance values decrease successively. Thus, the seepage pressure of a dam can be predicted with a determination coefficient R2 of 0.96. Compared with the recurrent neural network model and BP neural network model, the training time of the RS-LSTM model proposed is 6.37 s, and the operation efficiency is 41% and 59% higher than that of the RNN and BP models, respectively. The mean relative error is also 3.00%, which is 50% lower than that of the RNN model and 31% lower than that of the BP model. Based on these results, this model has the advantages of fast computation speed and high accuracy in prediction. (shrink)

As an idealist form of realism, or realist form of idealism, the system of ‘All-under-Heaven’ seeks to find a rational and optimal solution to the problem of political conflict. Howeve...

With the mutual exchange and integration of world football, modern football is in an increasingly comprehensive direction. This research mainly discusses complexity computer simulation in the study of the overall play of campus football. Complexity computer simulation is used to design the background of the simulated football field, and the area is divided according to the size ratio of the actual football field. Then, it uses drawing software to draw the football and player controls. The construction of the knowledge base (...) of this paper is mainly combined with the functional modules of rapid formation and response tactics. In the fast formation function, the required formation can be quickly given through football experience and knowledge rules. In the applied tactics function, for the responsibilities of forwards, midfielders, defenders, and other roles, the tactics implemented are given, including partially coordinated offensive and defensive tactics, personal offensive and defensive tactics, and set-ball tactics. The “holistic play” football tactics studied in this paper use XML files as recording and playback data, which not only greatly reduce the amount of file data but also make the operation of XML files intuitive and simple. XML can not only realize the recording and playback of player and football track but also be used in the function of rapid formation. The coach uses the “holistic play” football tactics simulation to demonstrate the movement route through the image, guide the players in each position to perceive the game scene by observing the movement route, and analyze and judge the tactical coordination of their respective positions. The computer simulation tactical analysis of the precision of the passing and running and the path coefficient of the passing factor is 0.606 and 0.59, respectively. This research helps to provide guidance on the overall playing tactics of football. (shrink)

Objectives: To explore the effect of social support and ability perception on stress coping strategies for competitive stress, and to reveal the mediating effects of primary and secondary evaluation, so as to further improve the theoretical model of stress coping in soccer players.Methods: A total of 331 male athletes from 22 teams in the Chengdu Middle School Campus Football League were taken as survey samples, and surveys were conducted on their stress experience, social support, ability perception, cognitive assessment, and coping (...) strategies for competition stress. SPSS 21.0 and AMOS 21.0 statistical analysis software were used. Descriptive statistics, correlation analysis, exploratory factor analysis, and confirmatory factor analysis were used to process the obtained data.Results: Positive primary assessment acted as a full mediator in the relationship between social support and secondary assessments, and negative primary assessment acted as a partial mediator in the relationship between competence perception and secondary assessments; Secondary assessment played a partial mediating role between positive primary assessment and positive coping strategies, and a full mediating role between negative primary assessment and positive coping strategies; Secondary assessments played the mediator neither between social support and a coping strategy for stress nor competence perception and a coping strategy for stress; Positive primary assessment, positive negative assessment, and secondary assessment all had significant positive benefits for positive coping. Still, the impact of positive primary assessment on positive coping was significantly better than negative primary assessment and secondary assessment.Conclusion: The coping strategy for the competitive stress model proposed by this study has a very good fit for the causal model. It can be used to explain the observed data from soccer players in middle schools. The primary and secondary assessments play different roles in the model. The combination of problem focuses and emotional focus on the positive stress coping strategy is suitable in the field of competitive sports. Still, the relevant research results need to be further explored and verified in the future. (shrink)

Should studies of social history engage in questions of important socio-political changes? The answer is undoubtedly affirmative. So far as the important changes in 19th century China are concerned, some case studies in regional social history have presented a picture of greater complexity and diversity. The Ningbo case, for example, shows that when a port that has had a history of foreign trade becomes embroiled in conflict between Chinese and foreigners, this conflict may simply become one mode of interaction amongst (...) many between Chinese and foreigners. The case of Turmot is an important turning point in Chinese history, since it marks the reversal of 2000 years of frequent attempts by nomadic tribes to expand southward. This trend is completely reversed by the Han nationalities’ northward immigration and reclamation, a development as significant as the Western invasion of China in terms of consequent social transformations. These historical traces revealed from within regions deepen our comprehension of these social transformations; consequently, such studies in social history may manage to provide answers different from those offered by the traditional model of political history. (shrink)

In a recent paper, Francis Y. Lin proposes a “memory-challenge” to two main interpretations of Wittgenstein’s private language argument: the “no-criterion-of-correctness” interpretation and the “no-stage-setting” interpretation. According to Lin, both camps of interpretation fail to explain why a private language is impossible within a short time period. To answer the “memory-challenge”, Lin motivates a grammatical interpretation of the private language argument. In this paper, I provide a critical discussion of Lin’s objection to these interpretations and argue that Lin’s objection fails. (...) In the case of the “no-stage-setting” interpretation, Lin suggests that the private language user can establish a stage within a short time period. However, I show that this stage is insufficient for a private language to be used correctly. In the case of the “no-criterion-of-correctness” interpretation, Lin believes that since memory is reliable within a short period, no criterion is needed for the correct use of a private language. However, I argue that his objection attacks a strawman, since the interpretation concerns the structure of justification, rather than the weakness of memory itself. I conclude with a critical discussion on memory and primitive expressions, the latter of which are crucial to Wittgenstein’s approach to public language. This discussion will help to draw a sharp line between private language and public language, and cast some doubt on Lin’s grammatical interpretation. (shrink)

This article is based on the author's extensive research on the missionaries to Tibet from the Disciples of Christ USA, and discusses various missionary efforts to transmit scientific and practical knowledge such as medicine, building, and agriculture in Eastern Tibet from 1904–1919. It shows that American missionaries played a prominent and distinctive role in the dissemination of scientific and practical knowledge as a result of their hard work and wisdom. In this sense, they made an important contribution to the development (...) of Tibetan society and the modernization movement in early twentieth-century Eastern Tibet. (shrink)

This paper focuses on modeling and control of a class of serial variable stiffness actuators based on level mechanisms for robotic applications. A multi-input multi-output complex nonlinear dynamic model is derived to fully describe SVSAs and the relative degree of the model is determined accordingly. Due to nonlinearity, high coupling, and parametric uncertainty of SVSAs, a neural network-based adaptive control strategy based on feedback linearization is proposed to handle system uncertainties. The feasibility of the proposed approach for position and stiffness (...) tracking of SVSAs is verified by simulation results. (shrink)