Research on adsorption mechanism of wall climbing robots based on internally balanced theory

The internally balanced theory proposed by the Japanese researchers,solved the contradiction between adsorption ability and moving capability of the permanent magnetic adsorption mechanism.However,it still has some problems when applied to wall climbing robots.This paper analyzes and improves this theory,and the improved internally balanced theory satisfies the requirements of the adsorption mechanism significantly.Finally,a practical prototype is proposed based on this method,and both the analysis using ANSYS and the experiment results justify the design validity.

GENERAL CONSTITUTIVE EQUATIONS OF AN ER SUSPENSION BASED ON THE INTERNAL VARIABLE THEORY

A microstructural constitutive theory of ER suspensions was formulated in this investigation. The framework was based on the internal variable theory and the mechanism analysis. The ER suspension consists of fine particles with high dielectric constant and the supporting fluid. Under the action of the electric field, the polarized particles will aggregate together to form the chain-like structures along the direction of the electric field. As the size and orientation of the particle aggregates are volatile, and they adjust according to the applied electric field and strain rate, the energy conservation equation and the force equilibrium equation were thus established to determine the orientation and size of the aggregates. Following that, a three-dimensional, explicit form of the constitutive equation was derived based on the interaction energy and the dissipation function of the system. The response of the system under the action of a simple shearing load was considered and discussed in detail. It is found that the shear-thinning viscosity of an ER suspension is wed approximated by the power-law proportional to (Mn)(-D.82).

The core ideology of Ecological Marxism:Marx is the pioneer of internal factors theory of ecological environment

This paper from the unified visual angle of philosophy and economics has observed Marx's theory of ecological economics, clarified the misunderstanding on Marx's theory of nature and ecological environmental thought at home and abroad for a long time, studied systematically and deeply the Marx's thought that natural and ecological environment is external condition and internal elements of human social economic growth, confirmed firstly Marx is the forerunner who established the theory of internal cause of natural ecological environment. It is of far-reaching academic and practical significance.

Relationality and processual construction： bringing Chinese ideas into international relations theory

The three mainstream International Relations theories that have arisen in the past thirty years, structural realism, neo-liberal institutionalism and structural constructivism, have all missed an important dimension, i.e., the study relational complexity in international society. of processes in the international system and of This paper, informed by social constructivism and Chinese philosophical traditions, aims to make up for this missing link and develop a theoretical model of processual constructivism by incorporating and conceptualizing two key Chinese ideas - processes and relations. ＂Process,＂ defined as relations in motion, can stand on its own, has its own dynamics, and plays a crucial role in international relations. The core of process, by definition, consists in relations. If ＂rationality,＂ rooted in individuality, has been a key concept for Western society, then its counterpart in Chinese society can be ＂relationality.＂ Conceptualizing relationality and treating it as the theoretical hard core, processual constructivism holds that relational networking in international society helps nation-states form their identities and produces international power. Processual constructivism is an evolution theory at systemic level, focusing on interactive practices among states and emphasizing the independent ontology of social processes which play a meaningful role in constructing international norms and state identities.

The Chinese View of World Order： The Concept of Tianxia （ All-Under-Heaven）

The topic of the paper is the Chinese view of world order and the concept of Tianxia （all under heaven ）. The objective is to analyze how contemporary Chinese scholars currently discuss and perceive this concept. In fact, several Chinese scholars are proposing to replace the existing international system with an updated version of the Tianxia system. This paper will describe the salient characteristics of Tianxia as an ideal and practice in China since early times, and examine recent Chinese literature on this subject. It will also analyze the related debate on the existence of a Chinese International Relations Theory（IRT）. The formation of an autonomous IRT would epitomize a new and clearer definition of the Chinese role in the international framework.

Brothers Indeed:Syria-Iran Quasi-alliance Revisited

It is universally acknowledged that while students of International Relations have probed deeply into alliance theory in the past half century,current literature in this field can hardly explain the informal mechanism for Syria-Iran Security Cooperation.To unravel the puzzle,this paper proposes a new hypothesis:Quasi-alliance.Based on an empirical study of Syria-Iran relations in the past three decades,it reveals that Quasi-alliance is a unique mode for security cooperation in international arena paralleling with formal alliance,and its security arrangement has unique logic,dynamics,mode of management and attributes.In the new framework of analysis,this paper considers the fundamental characteristics of Quasi-alliance formation,management,efficacy and prospect by focusing on the empirical study of the Syria-Iran Quasi-alliance from 1979 to 2009.The bilateral Quasi-alliance practice has undergone three stages of combating Iraqi aggression in the 1980s,curbing the Israel-Turkey Axis in 1990s and balancing the US-Israel coalition in the 21st century.

Energy Politics and Security Concepts from Multidimensional Perspectives

Even though the foregoing theories on international relations give different interpretations on this issue,they are actually interactional and overlapping.Also they seem to share more and more common features.With the acceleration of economic globalization since the end of the Cold War,nation states are increasingly interdependent in the energy sector while competition and coordination become the mainstream of international energy politics.Consequently all parties have put growing importance on international energy cooperation and its institutional construction.They believe that energy security should be achieved through international cooperation and coordination,for it is closely linked with sustainable development of economy and society as well as the external political and economic relations of nation states.

Appraisal of the Production-Oriented Approach： An Introduction

The production-oriented approach （POA） has been developed over a decade. It is driven by the need to improve English classroom instruction for university students in China （Wen, 2016）. It is also motivated by the aspiration to enhance the quality of foreign language education in other similar pedagogical contexts outside China. A volume of research has been done by Wen Qiufang and her research team, to formulate the theory of POA and to test its effectiveness in classroom pedagogy （e.g. Wen, 2016, 2015; Yang, 2015; Zhang, 2015）. At the moment, the POA is still at an early stage of theory building and almost all empirical research is done in the Chinese context. In order to improve the quality of this theory and to make it intelligible to the international academic community, a one-day symposium was held in Beijing Foreign Studies University on May 15, 2017. The symposium was entitled ＇The first international forum on innovative foreign language education in China： Appraisal of the POA＇. In the forum, leading experts in applied linguistics were invited to discuss the strengths and weaknesses of the POA and the directions for its future development. The symposium was the first attempt for the POA research team to discuss its latest work with international scholars. This Viewpoint section collects the responses of four experts who participated in the symposium, listed in alphabetical order. The collection of articles covers three topics related to the POA： its pedagogical application, its use for teacher training, and its research. Alister Cumming is Professor Emeritus and the former Head of the Centre for Educational Research on Languages and Literacies, University of Toronto, Canada. His article focuses primarily on POA research as an exemplary case of design-based research. Rod Ellis is Research Professor in the School of Education at Curtin University, Australia. He discusses POA in terms of pedagogy, teacher training and research, with both critiques and constructive suggestions. Paul Kei Matsuda is Professor of English and Director of Second Language Writing at Arizona State University, the writed states. He responds to POA from the perspective of an expert researcher and teacher of L2 writing. Charlene Polio is Professor and Associate Chair in the Department of Linguistics ＆ Germanic, Slavic, Asian ＆ African Languages atMichigan State University, the writed states. She conceptualises POA as a useful method to address some issues in pre-service teacher development. Overall, the articles in this section are insightful and reader-friendly. They are not only useful for the development of POA in particular, but may also be valuable to a broad range of researchers as they touch upon pertaining issues, as well as emerging topics, in the field of applied linguistics. We therefore find it necessary to make them accessible to a wide readership.