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A robust adaptive fuzzy nonlinear controller based on dynamic surface and integral sliding mode control strategy is proposed to realize trajectory tracking for a class of quadrotor UAVs. In this study, the composite factors including parametric uncertainties and external disturbances are added to controller design, which make it more realistic. The quadrotor model is divided into two subsystems of attitude and position that make the control design become feasible. The main contributions of the proposed ADSISMC strategy are as follows: The (...) combination of dynamic surface and integral sliding mode makes the system always in sliding stage by finding the appropriate initial position compared with the common sliding mode, and the complexity of explosion in backstepping method is eliminated. By introducing the fuzzy system, the unknown functions and uncertainties can be approximated which significantly improves the robustness and the tracking performance. The switching control strategy is utilized to compensate for the errors between estimated and ideal inputs; the tracking performance of the whole system has been significantly improved. The simulation results show the effectiveness of the proposed control method. (shrink)

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This paper considers the parametric control to the Lorenz system by state feedback. Based on the solutions of the generalized Sylvester matrix equation, the unified explicit parametric expression of the state feedback gain matrix is proposed. The closed loop of the Lorenz system can be transformed into an arbitrary constant matrix with the desired eigenstructure. The freedom provided by the parametric control can be fully used to find a controller to satisfy the robustness criteria. A numerical simulation is developed to (...) illustrate the effectiveness of the proposed approach. (shrink)

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Sarco/endoplasmic reticulum Ca2+ ATPase 2b (SERCA2b), a member of the SERCA family, is expressed ubiquitously and transports Ca2+ into the sarco/endoplasmic reticulum using the energy provided by ATP binding and hydrolysis. The crystal structure of SERCA2b in its Ca2+‐ and ATP‐bound (E1∙2Ca2+‐ATP) state and cryo‐electron microscopy (cryo‐EM) structures of the protein in its E1∙2Ca2+‐ATP and Ca2+‐unbound phosphorylated (E2P) states have provided essential insights into how the overall conformation and ATPase activity of SERCA2b is regulated by the transmembrane helix 11 and (...) the subsequent luminal extension loop, both of which are specific to this isoform. More recently, our cryo‐EM analysis has revealed that SERCA2b likely adopts open and closed conformations of the cytosolic domains in the Ca2+‐bound but ATP‐free (E1∙2Ca2+) state, and that the closed conformation represents a state immediately prior to ATP binding. This review article summarizes the unique mechanisms underlying the conformational and functional regulation of SERCA2b. (shrink)

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Journal of Chinese Philosophy, EarlyView.

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In accordance with the principle of historical materialism, nature of the property depends primarily on the fact that the actual possession of the property, rather than on their legal ownership first. Accordingly, the Isle of Man from the stock of the "separation of ownership 'departure, the actual property is not recognized joint-stock private property, but" social property ", so they also hopes to achieve socialism in stock. However, the situation at the time, the Isle of Man is sometimes still only (...) legal private ownership of property from the stock starting to think so, sometimes with analysis of private enterprise, "Das Kapital" residual value analysis on the model of joint-stock company, joint-stock property changes on the significant underestimate, even such as the stock is still equivalent to private ownership. According to the principle of materialism, the feature of property first depends on the reality of factual possession of property, but does not first depend on its legal ownership. Hence, from the theory of share holding system of its "separdtion of ownership and manageship" , Marx and Engels considered that the property of share holding system is actually not the private property, but the "public property". They, therefore, put the hope of realizing socialism on the share holding system. But under that situation, Marx and Engels could only consider the problems from the legal private ownership of the property of share holding system by using the theory of surplus values ​​and even regard the share holding system as private ownership. (shrink)

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本书包括:信义:社会伦理;贵族时代的道德;兵者诡道;纵横家;侠客:舍生取义的典范等内容。.

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本书是对中国文化思想史的研究,主要包括资政新篇;论世变之亟;中国国民党第一次钱国代表大会宣言等内容。.

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With the continuous development and improvement of Internet media technologies in China, the influence of livestream e-commerce is becoming increasingly prominent, and an increasing number of people are engaging in consumption activities in this field. It is important to study consumer stickiness in livestream e-commerce to promote economic structure adjustment and innovation-driven development. Therefore, in this study, we adopted the expectation confirmation theory as the theoretical framework and analyzed the ECT and stickiness. The study considered satisfaction as the previous influencing (...) factor of user and consumer stickiness, replaced the continuance intention in the expectation confirmation model with consumer stickiness as the explanatory variable, introduced the variable of perceived playfulness as the value perception after user experience, and established a consumer stickiness factors model. A total of 262 valid questionnaires were collected in this study, and SmartPLS analysis along with interviews were used to justify the limitations of data analysis. The results of the study demonstrated a significant effect of perceived usefulness and confirmation on satisfaction, a significant effect of confirmation on perceived usefulness, a significant effect of satisfaction on stickiness, and a significant effect of confirmation on perceived playfulness. Based on findings from the data analysis and interviews, we further proposed rationalized recommendations, and aimed to provide some theoretical guidance for future research on live streaming. (shrink)

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The puzzle has played a significant role in Chinese culture since its formation. The Lo-shu and the Ba-gua, the most prominent number puzzle in ancient China, with its instinctual quest for universal order, has constructed a philosophical system that has incorporated human being as an integral part of nature. The system has exerted great influence on Chinese culture to this day. Because of its mysterious origin and magical evolution, the Ba-gua has been used to predict the fortune of both the (...) nation and the individual. The Chinese character-deconstructing puzzle has also functioned as a foreshadow of one’s fate. By analyzing the components of a character, written by the subject in a specific context, divination was made. In contrast to the solemn mission of the number puzzle, and the character-deconstructing puzzle, the wedding puzzle and the riddle are lighthearted, and intended to provoke humor, and to function pedagogically. A latecomer, once the mysteriousness of number and character has faded, the riddle is used to promote the intellectual development of children. The wedding puzzle has been popular among those who are illiterate and make analogy by using common occurrence to allude to taboo in the oral dialect. Since their illiteracy has excluded them from reading and writing, they are free to make puzzles in their own dialect without being limited by a reverence for the written character. (shrink)

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Dinner times provide rich opportunities for overt and covert socialization. Drawing upon a larger corpus of 35 video-recorded family meals involving the three-year-old Zoe and her parents, this conversation analytic study describes how Zoe displays such agency through the practice of “voicing control” – momentarily sounding and acting like an adult by performing a range of controlling acts such as leading, instructing, advising, assessing, and mediating. I argue that by playing with such activities bound to the category of a higher (...) position than hers, the child manages to grow “a head taller” in the Vygotskyan sense. The findings contribute to the budding literature on documenting socialization in naturalistic settings with a specific focus on the child’s role in such socialization. (shrink)

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The target article by David Alfandre et al. offers a new ethical framework to guide COVID-19 contingency surge planning and response, and applies this ethical framework to three case example...

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This book covers a collection of papers addressing ethical issues generated by advanced biomedical technologies.

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Considering three monetary policy rules, together with two endogenous macroprudential policies that are credit constraints for households and counter-cyclical capital for bankers, this paper establishes a dynamic stochastic general equilibrium model. Based on the welfare analysis of different combinations of macroprudential rules and monetary policy rules, this paper identifies the optimal policy combinations and analyzes the coordination effects between macroprudential policies and monetary policies. The results show that no matter what kind of monetary policy rules is implemented, the introduction of (...) macroprudential rules has improved the level of total social welfare. In the optimal “two pillars” framework of monetary policies and macroprudential rules, the main objective of monetary policy is to stabilize price inflation, and the macroprudential policy to be implemented is the CRR macroprudential policy. This combination can effectively promote the stability of the real estate market, financial market, and macroeconomy, while maximizing the improvement of total social welfare. (shrink)

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Previous studies have shown that the motion intention recognition for lower limb prosthesis mainly focused on the identification of performed gait. However, the bionic prosthesis needs to know the next movement at the beginning of a new gait, especially in complex operation environments. In this paper, an upcoming locomotion prediction scheme via multilevel classifier fusion was proposed for the complex operation. At first, two motion states, including steady state and transient state, were defined. Steady-state recognition was backtracking of a completed (...) gait, which would be used as prior knowledge of motion prediction. In steady-state recognition, surface electromyographic and inertial sensors were fused to improve recognition accuracy; five typical locomotion modes were recognized by random forest classifier with over 97.8% accuracy. The transient state was defined as an observation period at the initial stage of upcoming movement, in which only the sEMG signal was recorded due to the limitation of sliding window length. LightGBM classifier was validated to outperform other methods in the accuracy and prediction time of transient-state recognition. Finally, a simplified HMM model based on prior knowledge and observation result was constructed to predict upcoming locomotion. The results indicated that the locomotion prediction was over 91% accuracy. The proposed scheme implements the locomotion prediction at the initial stage of each gait and provides critical information for the gait control of lower limb prosthesis. (shrink)

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Zi xu -- Di 1zhang yu zhou san yuan: xin, wu, neng -- Di 2zhang jin dai wu li xue de zhe xue yi yi -- Di 3zhang xin wu neng de ji ben te xing yu yu zhou ji ben fa ze -- Di 4zhang yu zhou san jie -- Di 5zhang yu zhou de sheng cheng bian hua -- Di 6zhang zong jie yu ying yong.

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Employee creativity is the foundation of organizational competitiveness, and it is also the important theme of creativity research. Based on the knowledge graph theory, this article uses the Citespace software to conduct a bibliometric analysis of 1,168 importance literature from the Web of Science and draws the co-citation and co-word clustering knowledge graph to explore research hotspots and trends of employee creativity. The research found that: First, the research on the connotation, dimensions, and behavior of employee creativity is still in (...) the initial stage; second, the research on the psychological, behavioral, and management factors that affect employee creativity is the key content of common concern; and third, it needs to comprehensively consider relevant factors from the combination of individuals, groups, and organizations about employee creativity research. On this basis, this article proposes the main directions for future research. (shrink)

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Undergraduate education is very important for higher education. Among the factors affecting the quality of undergraduate education, teaching quality is the most important factor. At present, an important issue that affects teaching quality is insufficient teaching investment. An open-ended questionnaire survey was conducted on 62 faculty members and 65 university students in China. Results found that the undergraduate teaching investment of faculty members mainly consists of four parts: workload investment, ability investment, energy investment, and teaching emotional investment. A preliminary test (...) was conducted on 342 faculty members, and the results of an exploratory factor analysis supported the proposed four-dimensional teaching investment model. The test involved 293 faculty members and confirmatory factor analysis showed that the four-dimensional model had a good degree of fit. A further criterion-related test showed that the four-dimensional teaching investment of faculty members has a significant positive correlation with classroom management, clarity of teaching materials, teacher–student interaction, teaching strategies, and skills application, and work engagement. These results show that the proposed four dimensions of teaching investment effectively measure the teaching investment of faculty members, specifically the indicators of teaching investment and that they promote the development of faculty teaching investment research. (shrink)

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Through an analysis of survey data gathered from private firms in China, this study examines the impact of employee protection on corporate innovation ability. The results indicate that firms with more advanced employee protection have stronger innovation ability. Furthermore, the positive relationship between employee protection and corporate innovation ability is more pronounced in those enterprises with labor unions. Finally, a firm’s political connections strengthen the influence of employee protection on corporate innovation. These empirical findings highlight the positive consolidating effects of (...) labor unions and political connections and will be of value to policy makers in emerging markets in gauging the important drivers of corporate innovation ability. (shrink)

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本书包括“‘五四之子’:文化养成和学业背景”、“西南联大七年的岁月”、“思想的自我放逐之旅”、“自由主义思想背景走向前台”、“跟着‘五四’的脚步前进”、“我不分享这个时代的价值”、“志未酬:晚年的思想 与学术”、“殷海光与后‘五四’时期中国思想的演进”八个部分。.

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This research synthesizes social exchange, organizational culture, and social identity theories to explore the boundary conditions of the relationship between high-performance work systems and employee organizational citizenship behavior. In particular, it draws on the China-specific management context. In this country, in spite of the wide use of a long-term-oriented and loose-control-focused Western-styled strategic human resource management model, a short-term-focused and tight-control-oriented error aversion culture is still popular. The study uses multi-source individual-level survey data in a large state-owned enterprise to test (...) the hypotheses. It is found that employee-experienced, Western-styled high-performance work systems positively impact a China-specific employee’s organizational citizenship behavior, and the—joint—moderation effects of employee-perceived error aversion culture and organizational identification are significant. The research findings deepen the understanding of the HRM-OCB relationship by demonstrating that culture and identity can jointly adjust the effects of HRM on OCB. The findings also challenge an established argument in the HRM-OCB literature that compatibility between employees’ personalities and organizational values – organizational identification – can enhance OCB. (shrink)

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Owing to the COVID-19 pandemic, working from home promotes the importance of indoor environment qualities. With the settings and functions of home offices, an experiment was carried out to determine the interaction effects between indoor plants and traffic noise levels on the performance and environmental evaluations of English reading comprehension tasks and the performance of short-term breaks. A sample of 22 Chinese university students took part in the experiment. Two visual conditions and five TNLs were included. Participants’ accuracy rates, eye (...) movements, mental workload, and feelings about the environment were collected. The mental fatigue recovery, visual fatigue recovery, anxiety recovery, and unfriendly recovery were measured for the analysis of a 5-min short-term break. The results demonstrate plants have significant effects on ERCTs and short-term breaks, especially at 45 and 50 dBA TNL; the effects of TNLs on ERCTs’ eye movements and work environment satisfaction differ by the presence of plants, e.g., the average pupil diameter, lighting and layout satisfaction; The effects of indoor plants on ERCT differ by the range of TNLs. In conclusion, indoor plants are beneficial to home workers engaged in ERCT when TNL does not exceed 50 dBA. The current data highlight the importance of audio-visual interaction in home offices and provide insights into the interaction mechanism between indoor plants and traffic noise. (shrink)

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Dual innovation, which includes exploratory innovation and exploitative innovation, is crucial for firms to obtain a sustainable competitive advantage. The knowledge base of firms greatly influences or even determines the scope, direction, and path of their dual-innovation activities, which drive their innovation process and produce different innovation performances. This study uses data source patents obtained by 285 focal firms in the Chinese new-energy vehicle industry in the period 2015–2020. Five knowledge-base features are selected by analyzing the correlation and multicollinearity, and (...) four different firm clusters are found by using the k-means clustering algorithm. Based on the classification and regression tree algorithm, we mine the potential decision rules governing the dual-innovation performance of firms. The results show that the exploratory innovation performance of firms in different clusters is mainly affected by two different knowledge-base features. Knowledge-base scale is a key factor affecting the exploitative innovation performance of firms. Firms in different clusters can improve their dual-innovation performance by rationally tuning the combination of knowledge-base features. (shrink)

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Although servant leadership may be equipped to provide a leadership model that addresses the issues of the modern workforce, little literature is available regarding the relationship between servant leadership and employee brand-based equity. This study contends to address this gap for which data have been collected from the service industry under a cross-sectional research design by distributing 410 questionnaires among the participants, out of which 337 were received back. After discarding the partially filled and incomplete responses, the useable responses were (...) 314. Data were analyzed via the Smart PLS approach by applying the structural equation modeling technique. Results indicate that servant leadership directly increased the employee-based brand equity by the mediating role of interpersonal trust. However, this study has not established the moderating role of an ethical work climate. (shrink)

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The main purpose of this study is to examine the impact of the big data management capabilities on the performance of manufacturing firms in the Asian Economy during coronavirus disease 2019. In addition to this, this study is also planned to examine the mediating role of organizational agility in the relationship between the big data management capabilities and the performance of Chinese manufacturing firms during COVID-19. Last, this study has examined the moderating role of information technology capability in the relationship (...) between the big data management capabilities and performance of Chinese manufacturing firms during COVID-19. This study adopted the quantitative method of research with a cross-sectional technique. This study employed a questionnaire to gather the data as a research instrument. This study has used the purposive sampling method by keeping in mind the context of this study. Employees of the Chinese SMEs that were at least 10 years old were the population of this study. The research model was being analyzed by employing the “partial least squares” technique through statistical software the Smart PLS version 3. The results are in line with the proposed hypothesis. This study contributed to the literature by suggesting characteristics that promote or prevent the organization from successfully implementing big data and pointed out that showing resistance in information management system implementation may have different effects on the organization. Besides, the study also discussed the relationship between such information systems and the organization. Findings of these two factors provide insights for the practitioners and researchers in assessing the success or failure of organizations for using big data. (shrink)

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ObjectiveThe aim of the study was to explore the relationship among gratitude, meaning in life, career calling, and career goal self-efficacy of the pre-service teachers in the Free Teacher Education program in China and the internal mechanism of action.MethodsIn this study, gratitude, MIL, career calling, and CGSE questionnaires were used to investigate 801 pre-service teachers. IBM SPSS 25.0 and AMOS 24.0 were used for data processing, and SPSS macro program Model 6 was used for the mediating mechanism.Results Gratitude was positively (...) correlated with MIL and career calling. MIL was positively correlated with career calling. Gratitude, MIL, and career calling were significantly and positively associated with CGSE. Gratitude influences pre-service teachers’ CGSE mainly through the independent intermediary of MIL and career calling, and the chain intermediary of MIL→career calling, three indirect effects.ConclusionGratitude indirectly predicts CGSE of pre-service teachers not only through the independent intermediary of MIL and career calling but also through the chain intermediary of MIL and career calling. (shrink)

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ObjectiveThe objective of the study was to explore the relationship between social support and fatigue as well as the mediating role of social functioning on that relationship.BackgroundPsychosocial factors such as social support and social functioning may influence patients’ fatigue symptoms. There is limited evidence on the relationship between social support, social functioning, and fatigue in liver transplant recipients.MethodsA total of 210 patients with liver transplants from two tertiary hospitals were enrolled in the current study. Questionnaires used include one for general (...) demographic data, the Perceived Social Support Scale, Social Disability Screening Schedule, and Fatigue Symptom Inventory.ResultsA total of 126 recipients reported fatigue. Gender, residence, BMI, and liver function were the primary factors affecting fatigue. Social support was positively correlated with social functioning and was negatively correlated with fatigue. The effect of social support on fatigue was partially mediated by social functioning.ConclusionThe fatigue of liver transplant recipients should be attended to. The higher the social support, the lower the fatigue of liver transplant recipients. Social support may also reduce fatigue through social functioning. The liver transplant team should help the liver transplant recipient establish a social support system, restore social functioning, and reduce fatigue symptoms. (shrink)

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