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 ...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 M展开更多
Objecfive:To evaluate the application effect of a plastic head brake device after radical resection of oral malignant tumors and flap repair for defects.Methods:2018-2019 years,5 months Sun Yat-sen Memorial patients o...Objecfive:To evaluate the application effect of a plastic head brake device after radical resection of oral malignant tumors and flap repair for defects.Methods:2018-2019 years,5 months Sun Yat-sen Memorial patients oral and maxillofacial surgery for oral malignant tumor resection surgery period skin flaps hospital 150 patients randomly divided into groups.Test groups 70 examples and the control group of 80 cases,two different head braking methods were used.The experimental group used a self-designed head brake device,which was prepared to suit the height of the patient before operation.lt was used from 0 to 3 days after operation.After the operation,the head lateral range was adjusted according to the braking requirements,and the pillow height was adjusted.The control group wrapped a 500g salt bag with a treatment towel on both sides of the patient's head for head braking.The incidence of flap vascular crisis,head and neck deviation,head occipital pressure ulcer incidence and patient comfort during braking were evaluated in both groups.ResuIts:The occurrence of vascular crisis in patients with oral tumors was significantly corelated with the patient's gender,alcoholism,and head movement(P0.05),and the movement of patients'head and neck was also significantly correlated with the occurrence of vascular crisis.Compared with the control group,the experimental group had sigmificant differences in head and neck deviation,incidence of vascular crisis,incidence of head ulcer pressure ulcers and patient comfort(P<0.05).Conclusion:The degree of head movement and incidence of vascular crisis in patients Closely related.Mouldable head brake device has more than ordinary salt bag ProA better head and neck braking effect can significantly reduce the incidence of postoperative vascular crisis,improve patient comfort,and have a better clinical application effect.In addition,this device can also be used repeatedly,reducing economic costs and better improving the satisfaction of doctors,nurses and patients.展开更多
The Remote Radio Head (RRH) over Fiber system is a new distributed network coverage mode.It processes the baseband parts concentratively by separating the baseband and Radio Frequency (RF).It moves the RF modules usin...The Remote Radio Head (RRH) over Fiber system is a new distributed network coverage mode.It processes the baseband parts concentratively by separating the baseband and Radio Frequency (RF).It moves the RF modules using fibers from the Base Stations (BSs) to the remote RF units.These RF modules are placed on the stations to be covered.This solution saves many equipment rooms required by conventional solutions.Meanwhile,it supports RRH over a large number of fibers through high-capacity macro BSs to realize the conversion between capacity and coverage.In addition,the RRH system also supports the coverage in other situations,such as high-speed railways and ultra-long distance.It is one of the most widely used technologies in the 3G network.展开更多
文摘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 M
文摘Objecfive:To evaluate the application effect of a plastic head brake device after radical resection of oral malignant tumors and flap repair for defects.Methods:2018-2019 years,5 months Sun Yat-sen Memorial patients oral and maxillofacial surgery for oral malignant tumor resection surgery period skin flaps hospital 150 patients randomly divided into groups.Test groups 70 examples and the control group of 80 cases,two different head braking methods were used.The experimental group used a self-designed head brake device,which was prepared to suit the height of the patient before operation.lt was used from 0 to 3 days after operation.After the operation,the head lateral range was adjusted according to the braking requirements,and the pillow height was adjusted.The control group wrapped a 500g salt bag with a treatment towel on both sides of the patient's head for head braking.The incidence of flap vascular crisis,head and neck deviation,head occipital pressure ulcer incidence and patient comfort during braking were evaluated in both groups.ResuIts:The occurrence of vascular crisis in patients with oral tumors was significantly corelated with the patient's gender,alcoholism,and head movement(P0.05),and the movement of patients'head and neck was also significantly correlated with the occurrence of vascular crisis.Compared with the control group,the experimental group had sigmificant differences in head and neck deviation,incidence of vascular crisis,incidence of head ulcer pressure ulcers and patient comfort(P<0.05).Conclusion:The degree of head movement and incidence of vascular crisis in patients Closely related.Mouldable head brake device has more than ordinary salt bag ProA better head and neck braking effect can significantly reduce the incidence of postoperative vascular crisis,improve patient comfort,and have a better clinical application effect.In addition,this device can also be used repeatedly,reducing economic costs and better improving the satisfaction of doctors,nurses and patients.
基金supported by the National Natural Science Foundation of China under Grant No.60877052
文摘The Remote Radio Head (RRH) over Fiber system is a new distributed network coverage mode.It processes the baseband parts concentratively by separating the baseband and Radio Frequency (RF).It moves the RF modules using fibers from the Base Stations (BSs) to the remote RF units.These RF modules are placed on the stations to be covered.This solution saves many equipment rooms required by conventional solutions.Meanwhile,it supports RRH over a large number of fibers through high-capacity macro BSs to realize the conversion between capacity and coverage.In addition,the RRH system also supports the coverage in other situations,such as high-speed railways and ultra-long distance.It is one of the most widely used technologies in the 3G network.
