Experimental modeling of a middle-rise office building via ambient modal identification is presented. A 200-DOF (Dimension of freedom) test model is designed to correlate with finite element mode. A newly developed fr...Experimental modeling of a middle-rise office building via ambient modal identification is presented. A 200-DOF (Dimension of freedom) test model is designed to correlate with finite element mode. A newly developed frequency-spatial domain decomposition ( FSDD ) technique is used to identify modal characteristics of the full-size building by using ambient response measurements. In the interested frequency ranges of 0～4.5 Hz and 0～ 6.5 Hz altogether 9 bending and torsion modes are identified. As one of the major focuses of the project, the accurate damping estimation is conducted based on FSDD. The identified modal frequencies and mode shapes are utilized for finite element model tuning. Excellent agreement has been achieved with respect to the final tuned finite element (FE) model up to 9 modes.展开更多
For improving global stability of mining environment reconstructing structure,the stress field evolution law of the structure with the filling height change of low-grade backfill was studied by ADINA finite element an...For improving global stability of mining environment reconstructing structure,the stress field evolution law of the structure with the filling height change of low-grade backfill was studied by ADINA finite element analysis code.Three kinds of filling schemes were designed and calculated,in which the filling heights were 2,4,and 7 m,separately.The results show that there are some rules in the stress field with the increase of the filling height as follows:(1) the maximum value of tension stress of the roof decreases gradually,and stress conditions are improved gradually;(2) the tension stress status in the vertical pillar is transformed into the compressive stress status,and the carrying capacity is improved gradually;however,when the filling height is beyond 2.8 m,the carrying capacity of the vertical pillar grows very slowly,so,there is little significance to continue to fill the low-grade backfill;(3) the bottom pillar suffers the squeezing action from the vertical pillars at first and then the gravity action of the low-grade backfill,and the maximum value of tension stress of the bottom pillar firstly increases and then decreases.Considering the economic factor,security and other factors,the low-grade backfill has the most reasonable height(2.8 m) in the scope of all filling height.展开更多
The concept of sustainable development, after being brousht forward, has become a shibboleth in the world, at national and local levels. In Europe, this concept is implemented from the local to tha nation, even to the...The concept of sustainable development, after being brousht forward, has become a shibboleth in the world, at national and local levels. In Europe, this concept is implemented from the local to tha nation, even to the Continent. The local sustainable development mainly consists in two factors： one is the renovating method continually invented by European Secretariot of ICLEI, and the other is that the local authorities towards sustainability are co-operated by the European Sustainable Cities and Towns Campaign. The coo-budget method is the outcome of tbese factors, For our country is a big country, on rapid progression of indastrialization and urbanization, with a large population and scarce resoarces per capita, it is practically significance to study us soon as possible the methodology. Experience from European local sustainable development may help us to resolve the handicap of departraent division in local a, tbority.展开更多
According to characteristics of information communication and sevices in omnimedia era, this paper studied the plan of constructing remote plant end animal hospital, which provided remote diagnosis service by expert t...According to characteristics of information communication and sevices in omnimedia era, this paper studied the plan of constructing remote plant end animal hospital, which provided remote diagnosis service by expert team of doctors based on the co-building and sharing medical case resource bases through the reasonable management model on cloud services platform, and discussed the model for service and commerce of remote plant and animal hospital.展开更多
With the reform of college English teaching, many new teaching methods have been applied to college English teaching. This article is based on constructivist theory to explore its application in college English teachi...With the reform of college English teaching, many new teaching methods have been applied to college English teaching. This article is based on constructivist theory to explore its application in college English teaching. Constructivism emphasizes student-centered, collaborative learning, self-learning and real learning environment. It emphasizes active leamers meaning construction.展开更多
Fear of crime varies considerably depending on its attitude towards environmental conditions. Sense of community and CPTED （crime prevention through environmental design） are believed to have an influence on fear of...Fear of crime varies considerably depending on its attitude towards environmental conditions. Sense of community and CPTED （crime prevention through environmental design） are believed to have an influence on fear of crime. This paper investigates the hypotheses of influences of CPTED on FOC （fear of crime） and SOC （sense of community）. A total of 171 respondents from the designated residential areas were involved in this study. The structural equation modeling technique was employed and the results indicate that CPTED has a direct influence on fear of crime and sense of community. However, no significant relationship was found between SOC and FOC.展开更多
Underground building with such major functions as underground traffic, commerce, culture and recreation, especially the multifunctional underground large-scale public complex, has become a significant part of the over...Underground building with such major functions as underground traffic, commerce, culture and recreation, especially the multifunctional underground large-scale public complex, has become a significant part of the overaU functional structure or even the core of a city. Therefore, the expression of the architectural appearance, and characters of underground building, as well as the integration between the building and its external environment constitute an important part in improving overall functional structure and optimizing cityscape. From the perspective of space and environment shaping, the author explores the architectural appearance, and characters of underground building and its external environment, provides several basic design patterns with further discussion.展开更多
The recent establishment of a digital culture and society, together with current financial crisis and urgent energetic and climatic needs, has radically changed the architectural scene from the optimism of some years ...The recent establishment of a digital culture and society, together with current financial crisis and urgent energetic and climatic needs, has radically changed the architectural scene from the optimism of some years ago to a situation of uncertainty and huge social demands and challenges. In this context, it is suggested to rethink the role of structure in architecture, such as an enabler, a guide and a catalyst. The purpose of this paper is to present the economic, cultural and social context in which architecture develops nowadays. The method, to suggest a discussion on which role the structure may adopt in the architecture to come. The achievement, to highlight its potential to face current requirements and challenges.展开更多
The aim of this paper is to describe and to reflect on the experience of the authors in setting up a new model of learning environment in management education in a University in Brazil, which was initially called Mana...The aim of this paper is to describe and to reflect on the experience of the authors in setting up a new model of learning environment in management education in a University in Brazil, which was initially called Management Practice Laboratory （MPL）. The MPL environment was conceived as a physical and conceptual space where students could learn and practice the principles and techniques of working in organizations in its three levels operational, tactical, and strategic. The foundations of the project come from social constructivist perspective on learning, from experiential learning literature and from researches that call for a new epistemological ground in management learning. In this paper, the authors will stress some challenges and frustrations with the project since these could be helpful to those interested in similar initiatives. Due to limited space, only two challenges will be stressed： （1） the construction of legitimacy for the project; and （2） the persistent dissonance between theory and practice. The authors conclude that there is room for innovation in the way management is taught and learned in universities since one shows courage to overcome the challenges and frustrations one will certainly deal with展开更多
Community spirit is the real essence of community. By involvement in community life, people identify with the communities where they live and work. Thanks to its own distinctive history and cultural environment, Chine...Community spirit is the real essence of community. By involvement in community life, people identify with the communities where they live and work. Thanks to its own distinctive history and cultural environment, Chinese society has a community development and social structure quite distinct from that of the West. Social organizations are not fully developed in China, and the government plays a dominant role in community development. Community building in China should cultivate residents＇ community consciousness, and be centered on specific social problems such as homelessness, unemployment, family care, poverty, etc.展开更多
文摘Experimental modeling of a middle-rise office building via ambient modal identification is presented. A 200-DOF (Dimension of freedom) test model is designed to correlate with finite element mode. A newly developed frequency-spatial domain decomposition ( FSDD ) technique is used to identify modal characteristics of the full-size building by using ambient response measurements. In the interested frequency ranges of 0～4.5 Hz and 0～ 6.5 Hz altogether 9 bending and torsion modes are identified. As one of the major focuses of the project, the accurate damping estimation is conducted based on FSDD. The identified modal frequencies and mode shapes are utilized for finite element model tuning. Excellent agreement has been achieved with respect to the final tuned finite element (FE) model up to 9 modes.
基金Project(200911MS01) supported by the Scientific Research Fund of Guangxi Provincial Education Department, China Project (XBZ100126) supported by the Scientific Research Foundation of Guangxi University, China Project(2009B005) supported by the Teaching Reform Foundation in the New Century Higher Education of Guangxi Province,China
文摘For improving global stability of mining environment reconstructing structure,the stress field evolution law of the structure with the filling height change of low-grade backfill was studied by ADINA finite element analysis code.Three kinds of filling schemes were designed and calculated,in which the filling heights were 2,4,and 7 m,separately.The results show that there are some rules in the stress field with the increase of the filling height as follows:(1) the maximum value of tension stress of the roof decreases gradually,and stress conditions are improved gradually;(2) the tension stress status in the vertical pillar is transformed into the compressive stress status,and the carrying capacity is improved gradually;however,when the filling height is beyond 2.8 m,the carrying capacity of the vertical pillar grows very slowly,so,there is little significance to continue to fill the low-grade backfill;(3) the bottom pillar suffers the squeezing action from the vertical pillars at first and then the gravity action of the low-grade backfill,and the maximum value of tension stress of the bottom pillar firstly increases and then decreases.Considering the economic factor,security and other factors,the low-grade backfill has the most reasonable height(2.8 m) in the scope of all filling height.
文摘The concept of sustainable development, after being brousht forward, has become a shibboleth in the world, at national and local levels. In Europe, this concept is implemented from the local to tha nation, even to the Continent. The local sustainable development mainly consists in two factors： one is the renovating method continually invented by European Secretariot of ICLEI, and the other is that the local authorities towards sustainability are co-operated by the European Sustainable Cities and Towns Campaign. The coo-budget method is the outcome of tbese factors, For our country is a big country, on rapid progression of indastrialization and urbanization, with a large population and scarce resoarces per capita, it is practically significance to study us soon as possible the methodology. Experience from European local sustainable development may help us to resolve the handicap of departraent division in local a, tbority.
文摘According to characteristics of information communication and sevices in omnimedia era, this paper studied the plan of constructing remote plant end animal hospital, which provided remote diagnosis service by expert team of doctors based on the co-building and sharing medical case resource bases through the reasonable management model on cloud services platform, and discussed the model for service and commerce of remote plant and animal hospital.
文摘With the reform of college English teaching, many new teaching methods have been applied to college English teaching. This article is based on constructivist theory to explore its application in college English teaching. Constructivism emphasizes student-centered, collaborative learning, self-learning and real learning environment. It emphasizes active leamers meaning construction.
文摘Fear of crime varies considerably depending on its attitude towards environmental conditions. Sense of community and CPTED （crime prevention through environmental design） are believed to have an influence on fear of crime. This paper investigates the hypotheses of influences of CPTED on FOC （fear of crime） and SOC （sense of community）. A total of 171 respondents from the designated residential areas were involved in this study. The structural equation modeling technique was employed and the results indicate that CPTED has a direct influence on fear of crime and sense of community. However, no significant relationship was found between SOC and FOC.
文摘Underground building with such major functions as underground traffic, commerce, culture and recreation, especially the multifunctional underground large-scale public complex, has become a significant part of the overaU functional structure or even the core of a city. Therefore, the expression of the architectural appearance, and characters of underground building, as well as the integration between the building and its external environment constitute an important part in improving overall functional structure and optimizing cityscape. From the perspective of space and environment shaping, the author explores the architectural appearance, and characters of underground building and its external environment, provides several basic design patterns with further discussion.
文摘The recent establishment of a digital culture and society, together with current financial crisis and urgent energetic and climatic needs, has radically changed the architectural scene from the optimism of some years ago to a situation of uncertainty and huge social demands and challenges. In this context, it is suggested to rethink the role of structure in architecture, such as an enabler, a guide and a catalyst. The purpose of this paper is to present the economic, cultural and social context in which architecture develops nowadays. The method, to suggest a discussion on which role the structure may adopt in the architecture to come. The achievement, to highlight its potential to face current requirements and challenges.
文摘The aim of this paper is to describe and to reflect on the experience of the authors in setting up a new model of learning environment in management education in a University in Brazil, which was initially called Management Practice Laboratory （MPL）. The MPL environment was conceived as a physical and conceptual space where students could learn and practice the principles and techniques of working in organizations in its three levels operational, tactical, and strategic. The foundations of the project come from social constructivist perspective on learning, from experiential learning literature and from researches that call for a new epistemological ground in management learning. In this paper, the authors will stress some challenges and frustrations with the project since these could be helpful to those interested in similar initiatives. Due to limited space, only two challenges will be stressed： （1） the construction of legitimacy for the project; and （2） the persistent dissonance between theory and practice. The authors conclude that there is room for innovation in the way management is taught and learned in universities since one shows courage to overcome the challenges and frustrations one will certainly deal with
文摘Community spirit is the real essence of community. By involvement in community life, people identify with the communities where they live and work. Thanks to its own distinctive history and cultural environment, Chinese society has a community development and social structure quite distinct from that of the West. Social organizations are not fully developed in China, and the government plays a dominant role in community development. Community building in China should cultivate residents＇ community consciousness, and be centered on specific social problems such as homelessness, unemployment, family care, poverty, etc.
