This paper studies the problems of tip position regulation and vibration suppression of flexible manipulators without using the model. Because of the two-timescale characteristics of flexible manipulators, applying the existing model-free control methods may lead to ill-conditioned numerical problems. In this paper, the dynamics of a flexible manipulator is decomposed into two subsystems which are linear and controllable at different timescales by singular perturbation theory and a model-free composite controller is designed to alleviate the ill-conditioned numerical problems. To do this, (...) a model-free composite control strategy is constructed which facilitates in designing the controller in slow and fast timescales. In the slow timescale, the slow subsystem controller is designed by adaptive dynamic programming based on the measurements of the slow inputs and the position, while the vibration in the slow timescale is estimated by the least square method. In the fast timescale, the vibration is reconstructed based on the measurements of vibration and its estimate in the slow timescale, by which the fast controller is designed using ADP. Stability of the closed-loop system is proved by SP theory. Finally, simulations are given to show the feasibility and effectiveness of the proposed methods. (shrink)

As an imitation of the biological nervous systems, neural networks, which have been characterized as powerful learning tools, are employed in a wide range of applications, such as control of complex nonlinear systems, optimization, system identification, and patterns recognition. This article aims to bring a brief review of the state-of-the-art NNs for the complex nonlinear systems by summarizing recent progress of NNs in both theory and practical applications. Specifically, this survey also reviews a number of NN based robot control algorithms, (...) including NN based manipulator control, NN based human-robot interaction, and NN based cognitive control. (shrink)

Dysregulation of lipid metabolism is a commonly observed feature associated with metabolic syndrome and leads to the development of negative health outcomes such as obesity, diabetes mellitus, non‐alcoholic fatty liver disease, or atherosclerosis. Time‐restricted feeding/eating (TRF/TRE), an emerging dietary intervention, has been shown to promote pleiotropic health benefits including the alteration of diurnal expression of genes associated with lipid metabolism, as well as levels of lipid species. Although TRF likely induces a response in multiple organs leading to the modulation of (...) lipid metabolism, a majority of the studies related to TRF effects on lipids have focused only on individual tissues, and furthermore there is a lack of insight into potential underlying mechanisms. In this review, we summarize the current insights regarding TRF effects on lipid metabolism and the potential mechanisms in adipose tissue, liver, skeletal muscle, and heart, and conclude by outlining possible avenues for future exploration. (shrink)

Based on the concept of “passengers self-help hubbing,” we build a flight schedule optimization model where maximizing the number of feasible flight connections, indicating transfer opportunities, as one objective and minimizing total slot displacements as the other objective. At the same time, the “Demand Smoothing Model” is introduced into the flight schedule optimization model to reduce the queuing delays for arrival and departure flights. We take into account all aircraft itineraries, the difficulty level of schedule coordination, and the maximum displacement (...) of any single flight acceptable to airlines when optimizing flight schedule. Given an original schedule, the model produces a feasible modified schedule that obeys the slot limits specified for an airport without canceling any flights, increases transfer opportunities, and improves on-time performance for hub airports while reducing interference with airline scheduling preferences. The model was verified with the operating data of the Urumqi international airport, and the results show that minor adjustments to flight schedules can increase the transfer opportunities of the airport and significantly reduce flight queuing delays. (shrink)

Understanding how teacher leaders are engaged in curriculum affairs is critical with the implementation of instructional decentralization. The current study adopts a qualitative approach to investigate Teaching Research Group leaders’ involvement in curriculum leadership in the Chinese context. It explores the conceptions of TRG leaders by interviewing 20 of them, observing four meetings held by TRG leaders, and collecting 10 extracts from appraisal summaries of TRG leaders in secondary schools in China. Drawing on the findings, this paper examines the characteristics (...) of TRG leader’s engagement in CL. More importantly, data highlighted significant problems the participants perceived and faced in their work as TRG leaders, which consisted of amplifying the necessity for empowering TRG leaders and identifying the phenomenon that said leaders are less empowered and less motivated to undertake the CL role. The results add to the international body of knowledge on the teachers’ engagement in CL. (shrink)

Extant studies of corporate hypocrisy have largely overlooked its implications for employees until recently. Drawing upon social information processing theory, we theorize the impact of corporate hypocrisy on employee silence—an employee behavior potentially detrimental to both organizations and society, as well as the underlying mediating and moderating mechanisms. We empirically tested our hypotheses with two studies. In Study 1, we found that corporate hypocrisy was positively related to employee silence through both employee cognitive trust and employee prosocial motivation. In Study (...) 2, we revealed that consumer pressure weakened the mediating roles of employee cognitive trust and prosocial motivation, while regulatory pressure strengthened these roles. Overall, this study sheds light on whether, how, and when employees remain silent when they perceive corporate hypocrisy. Implications for theory and practice are discussed. (shrink)

Ben shu dui ke xue mei xue si xiang shi de yan jiu dui xiang, ren wu he fang fa jin xing le xi tong di lun shu.

本书介绍了职业道德的特征、社会主义职业道德的基本原则和规范,职业道德的教育、修养和评价等内容。.

In this paper, I provide a framework for accounting for the self, based on a reconstruction of Galen Strawson’s “theory of SESMETs,” or the Pearl view, with Barry Dainton’s continuous consciousness thesis. I argue that the framework I provide adequately accounts for the self and is preferable to solely adopting either Strawson’s or Dainton’s theory. I call my reconstruction the “Necklace” view of the self.

A nonlinear coupled wing model subject to unknown external disturbances is proposed in this paper. Since the model is modeled by partial differential equations, the traditional control design scheme based on the ordinary differential equation model is not applicable, and the control law design becomes very complex. In this paper, a new antidisturbance boundary control scheme based on a finite time convergent disturbance observer is proposed. The control laws are designed based on the new disturbance observers to make the external (...) disturbance errors converge to zero in a finite time and ensure the uniformly bounded stability of the controlled system. Finally, the effectiveness of the controllers and the finite-time convergence of disturbance errors are verified by the simulation and comparison. (shrink)

本书对科技与政治交互作用空间的性质、结构及其张力进行了基本阐述,探讨科技政治空间价值张力的离合及有机统一的作用规律以及科技政治空间自由与干涉的权力张力及其作用规律等。.

People’s comfort with and acceptability of artificial intelligence (AI) instantiations is a topic that has received little systematic study. This is surprising given the topic’s relevance to the design, deployment and even regulation of AI systems. To help fill in our knowledge base, we conducted mixed-methods analysis based on a survey of a representative sample of the US population (_N_ = 2254). Results show that there are two distinct social dimensions to comfort with AI: as a peer and as a (...) superior. For both dimensions, general and technological efficacy traits—locus of control, communication apprehension, robot phobia, and perceived technology competence—are strongly associated with acceptance of AI in various roles. Female and older respondents also were less comfortable with the idea of AI agents in various roles. A qualitative analysis of comments collected from respondents complemented our statistical approach. We conclude by exploring the implications of our research for AI acceptability in society. (shrink)

本书分四个部分:第一部分以梁漱溟先生的思虑为个案样本,探讨法的一般理念问题;第二部分论及宪政、普通法和近代西方法律教育与法学研究;第三部分意在研索“罪孽理念与罪刑关系”;第四部分为通讯体论文。.

本书是关于新意识形态批评的论文集,本书要论述的意图是:以理论与社会生活的密切关系而言,中国文论家可以创造出自己的“本位话语”,其具体问题集中为两个,即文化转型中的当代中国的精神建构和建立文学理论的本位 话语。.

本书内容包括:孔子思想的主要特征、老子思想的文化地位、墨子思想的历史影响、孟子思想的历史影响、董仲舒在学术思想史上的地位、张衡在中国思想文化上的地位等内容。.

本书简要地介绍了《周易》的一些重要概念及其在二十一世纪的可能应用,指出以《周易》为代表的东方文明对人类社会在新世纪的可持续发展所可能做出的贡献。.

The subject of this work is the worldview of subculture and its complex interaction with the elements and structure of these groups. To do this, various types of subcultures are analyzed in detail in order to identify their unique ideological features and characteristics. The main purpose of the research is to find links between the worldview of subcultures and their structural elements, as well as to understand the impact of these links on socio-cultural processes. By analyzing these issues, the study (...) seeks to expand our understanding of subcultural dynamics and their place in the modern sociocultural context. The results of this work can be useful for further research in the field of anthropology, sociology, cultural studies, as well as for the development of practical strategies for managing and supporting subcultural communities. To achieve the goals of the study, an anthropological analysis of subcultures is used, which includes an analysis of synchronous and diachronic aspects of the subcultural worldview, as well as comparative analysis. The scientific novelty of this work is manifested in a deep and comprehensive analysis of the diversity of types of worldview representation in various subcultures and their impact on a wide range of socio-cultural processes. The analysis presented in the study reveals unique aspects of the subcultural worldview and its diverse manifestations, which not only contributes to a deeper understanding of the socio-cultural dynamics of modern society, but also expands our knowledge of the mechanisms of formation and functioning of subcultural communities. The conclusions of this work are important both for academic research in the field of anthropology and sociology, and for practical applications, for example, those aimed at effective management and support of subcultural groups in modern society, including the development of policies and programs that promote inclusivity, cultural diversity and socio-cultural harmony. (shrink)

The Alexandra District Ambulance Service is the only volunteer-based ambulance service in Victoria, Australia. It provides an opportunity to reflect on the ethical issues surrounding the delivery of ambulance service by volunteers, and its impact on the community.

Microgames are rapidly gaining increased attention and are highly being considered because of the technology-based media that enhances students’ learning interests and educational activities. Therefore, this study aims to develop a new construct through confirmatory factor analysis, to comprehensively understand the factors influencing the use of microgames in mathematics class. Participants of the study were the secondary school teachers in West Java, Indonesia, which had a 1-year training in microgames development. We applied a quantitative approach to collect the data via (...) online questionnaires through google form. Structural Equation Modelling with AMOS software was used to analyze the proposed model. Empirical results confirmed the perceived easy to use and subjective norm influence relationship with teachers’ microgame usage behaviors and intentions. In this condition, SN was found to have the initial significant influence on behavioral intention, as attitude, BI, and facilitating conditions also correlated with the actual use of microgames. Furthermore, the largest influential factor was BI, with the results subsequently showing that TPACK had no significant influence on the actual use of microgames. This report is expected to help bridge the gap across several previous studies, as well as contribute to the explanation and prediction of the factors influencing the teachers’ mathematical utilization of the study’s program. Besides this, it also helps to increase the use of microgames in teaching and learning activities. (shrink)