The hot deformation behavior of Ti-3.0Al-3.7Cr-2.0Fe-0.1B (TACFB) titanium alloy was investigated using a Gleeble-1500D thermal simulator in the temperature range of 800-950 °C, at constant strain rate from 0.01 ...The hot deformation behavior of Ti-3.0Al-3.7Cr-2.0Fe-0.1B (TACFB) titanium alloy was investigated using a Gleeble-1500D thermal simulator in the temperature range of 800-950 °C, at constant strain rate from 0.01 s-1 to 10 s-1 and with height reduction of 70%. Flow stress and microstructure evolution during hot compression of TACFB alloy were investigated. The processing map of TACFB alloy was obtained. The results indicate that the hot deformation behavior of TACFB alloy is sensitive to the deformation temperature and strain rate. The peak flow stress decreases with increasing the test temperature and decreasing the strain rate. The constitutive relationship of TACFB alloy was obtained on the base of Arrhenius equations. When the strain rates are higher than 1.0 s-1, the dynamic recrystallization occurs, and the higher the strain rates are, the more the recrystallization is.展开更多
Purpose： This paper responds to the question, is exercise medicine？ It does so using a qualitative case study that proposes that exercise is recreation. The study （1） describes and reflects upon an exercise is rec...Purpose： This paper responds to the question, is exercise medicine？ It does so using a qualitative case study that proposes that exercise is recreation. The study （1） describes and reflects upon an exercise is recreation metaphor, （2） establishes the principles and processes used to develop a sport park within which exercise is recreation, and （3） presents a comparative analysis of the exercise is recreation approach with a UK quality framework for ＂exercise referrals＂. Methods： Four years of documentation were collated and placed into 14 categories： （1） university strategies, （2） plans of the site, （3） policy documents, （4） minutes of a steering group, （5） contemporary documents, （6） organisational charts, （7） responses to local government policies on sport, （8） consultation documents, （9） operational procedures, （10） facility specifications, （11） partnership agreements, （12） material relating to the university＇s work on events, （13） notes on the universities sport department, and （14） timetables. These data were analysed through a 4-stage process which used recreation as the analytical theme for a comparative analysis. Results： The characteristics of the exercise is recreation metaphor in this case are （1） a focus on the experience of the user, （2） the promotion of well-being, （3） the importance of community, （4） embracing inclusivity, （5） sport, （6） aesthetics, and （7） leisure time. The principles and processes used to develop the sport park were （1） custodianship, （2） partnerships, （3） values, （4） inter-professional working, （5） local heritage, （6） change, （7） the natural park environment, and （8） ＂riding the bike as you build it＂. The comparative analysis with a UK quality framework for ＂exercise referrals＂ clearly shows a difference from an exercise is recreation approach. Conclusion： Exercise is recreation and may enable individuals and communities to reach a state of well-being. ~ 2016 Production and hosting by Elsevier B.V. on behalf of Shanghai University of Sport. This is an open access article under the CC BY-NC-ND license （http：//creativecommons.org/licenses/by-nc-nd/4.0/）.展开更多
Electronic Commerce or E-Commerce is the concept of making trade in electronic environment which has emerged by the use of the internet in commerce and increased after 1995. Organizations started to use electronic com...Electronic Commerce or E-Commerce is the concept of making trade in electronic environment which has emerged by the use of the internet in commerce and increased after 1995. Organizations started to use electronic commerce by internet facilities nearby their traditional marketing methods to increase their sales and profits. E-Commerce has many advantages when compared to traditional trade. This paper aims to take out these advantages for the companies which want to make use of electronic commerce and includes important advices for these companies. The paper also includes the basic version of an e-commerce business, by analysing one of the most successful firms in Turkey, yemeksepeti.com in terms of an Entity-Relationship Diagram （ERD） and Event Driven Process （EDP） to explain the organizations how an e-commerce business model should be constructed systematically. An ERD is a data modeling technique which graphically illustrates an information system＇s entities and the relationships between those entities. On the other hand, EDP is a chain for the modeling language which is used for describing business processes and workflows of an organization. This study examines yemeksepeti.com for providing an example of these two diagrams, which should be a milestone for the newcomers of an e-commerce. Organizing an e-commerce should start with the software designs and these examples of ERD and EDP which are the base for the software of an e-commerce business. The limitations of the paper include the examination of an only one company which operates only in Turkey, thus the further research should examine a global company and/or an e-commerce business that operates in several industries.展开更多
基金Project (2010DFA52280) supported by International Science and Technology CooperationProject (20100470260) supported by China Postdoctoral Science Foundation
文摘The hot deformation behavior of Ti-3.0Al-3.7Cr-2.0Fe-0.1B (TACFB) titanium alloy was investigated using a Gleeble-1500D thermal simulator in the temperature range of 800-950 °C, at constant strain rate from 0.01 s-1 to 10 s-1 and with height reduction of 70%. Flow stress and microstructure evolution during hot compression of TACFB alloy were investigated. The processing map of TACFB alloy was obtained. The results indicate that the hot deformation behavior of TACFB alloy is sensitive to the deformation temperature and strain rate. The peak flow stress decreases with increasing the test temperature and decreasing the strain rate. The constitutive relationship of TACFB alloy was obtained on the base of Arrhenius equations. When the strain rates are higher than 1.0 s-1, the dynamic recrystallization occurs, and the higher the strain rates are, the more the recrystallization is.
文摘Purpose： This paper responds to the question, is exercise medicine？ It does so using a qualitative case study that proposes that exercise is recreation. The study （1） describes and reflects upon an exercise is recreation metaphor, （2） establishes the principles and processes used to develop a sport park within which exercise is recreation, and （3） presents a comparative analysis of the exercise is recreation approach with a UK quality framework for ＂exercise referrals＂. Methods： Four years of documentation were collated and placed into 14 categories： （1） university strategies, （2） plans of the site, （3） policy documents, （4） minutes of a steering group, （5） contemporary documents, （6） organisational charts, （7） responses to local government policies on sport, （8） consultation documents, （9） operational procedures, （10） facility specifications, （11） partnership agreements, （12） material relating to the university＇s work on events, （13） notes on the universities sport department, and （14） timetables. These data were analysed through a 4-stage process which used recreation as the analytical theme for a comparative analysis. Results： The characteristics of the exercise is recreation metaphor in this case are （1） a focus on the experience of the user, （2） the promotion of well-being, （3） the importance of community, （4） embracing inclusivity, （5） sport, （6） aesthetics, and （7） leisure time. The principles and processes used to develop the sport park were （1） custodianship, （2） partnerships, （3） values, （4） inter-professional working, （5） local heritage, （6） change, （7） the natural park environment, and （8） ＂riding the bike as you build it＂. The comparative analysis with a UK quality framework for ＂exercise referrals＂ clearly shows a difference from an exercise is recreation approach. Conclusion： Exercise is recreation and may enable individuals and communities to reach a state of well-being. ~ 2016 Production and hosting by Elsevier B.V. on behalf of Shanghai University of Sport. This is an open access article under the CC BY-NC-ND license （http：//creativecommons.org/licenses/by-nc-nd/4.0/）.
文摘Electronic Commerce or E-Commerce is the concept of making trade in electronic environment which has emerged by the use of the internet in commerce and increased after 1995. Organizations started to use electronic commerce by internet facilities nearby their traditional marketing methods to increase their sales and profits. E-Commerce has many advantages when compared to traditional trade. This paper aims to take out these advantages for the companies which want to make use of electronic commerce and includes important advices for these companies. The paper also includes the basic version of an e-commerce business, by analysing one of the most successful firms in Turkey, yemeksepeti.com in terms of an Entity-Relationship Diagram （ERD） and Event Driven Process （EDP） to explain the organizations how an e-commerce business model should be constructed systematically. An ERD is a data modeling technique which graphically illustrates an information system＇s entities and the relationships between those entities. On the other hand, EDP is a chain for the modeling language which is used for describing business processes and workflows of an organization. This study examines yemeksepeti.com for providing an example of these two diagrams, which should be a milestone for the newcomers of an e-commerce. Organizing an e-commerce should start with the software designs and these examples of ERD and EDP which are the base for the software of an e-commerce business. The limitations of the paper include the examination of an only one company which operates only in Turkey, thus the further research should examine a global company and/or an e-commerce business that operates in several industries.
