Offloading application to cloud can augment mobile devices' computation capabilities for the emerging resource-hungry mobile application, however it can also consume both much time and energy for mobile device off...Offloading application to cloud can augment mobile devices' computation capabilities for the emerging resource-hungry mobile application, however it can also consume both much time and energy for mobile device offloading application remotely to cloud. In this paper, we develop a newly adaptive application offloading decision-transmission scheduling scheme which can solve above problem efficiently. Specifically, we first propose an adaptive application offloading model which allows multiple target clouds coexisting. Second, based on Lyapunov optimization theory, a low complexity adaptive offloading decision-transmission scheduling scheme has been proposed. And the performance analysis is also given. Finally, simulation results show that,compared with that all applications are executed locally, mobile device can save 68.557% average execution time and 67.095% average energy consumption under situations.展开更多
A new multi-species particle swarm optimization with a two-level hierarchical topology and the orthogonal learning strategy(OMSPSO) is proposed, which enhances the global search ability of particles and increases thei...A new multi-species particle swarm optimization with a two-level hierarchical topology and the orthogonal learning strategy(OMSPSO) is proposed, which enhances the global search ability of particles and increases their convergence rates. The numerical results on 10 benchmark functions demonstrated the effectiveness of our proposed algorithm. Then, the proposed algorithm is presented to design a butterfly-shaped microstrip patch antenna. Combined with the HFSS solver, a butterfly-shaped patch antenna with a bandwidth of about 40.1% is designed by using the proposed OMSPSO. The return loss of the butterfly-shaped antenna is greater than 10 d B between 4.15 and 6.36 GHz. The antenna can serve simultaneously for the high-speed wireless computer networks(5.15–5.35 GHz) and the RFID systems(5.8 GHz).展开更多
The requirements of the college English curriculum teaching put forward the teaching objectives to cultivate the English comprehensive application abilities of the students, and improve their cultural qualities and th...The requirements of the college English curriculum teaching put forward the teaching objectives to cultivate the English comprehensive application abilities of the students, and improve their cultural qualities and their abilities of the independent learning, which pointed out the direction for the reform of the college English teaching. The language teaching mode based on the contents of the subject advocates that the knowledge learning and the language learning with the combination of the contents of the discipline, to develop the students＇ independent learning abilities, is a feasible and effective way to achieve the goal of the college English teaching. To cultivate the students＇ practical ability of using English is the basic task of the English teaching and learning. But China＇s current college English education failed to organically and effectively combine the teaching of the language knowledge and the cultivation of the language abilities and the teaching of the knowledge, leading to the existence of the obvious price scissors in the students＇ language knowledge and the language abilities. Therefore, the key to the reform of the college English teaching is to correctly position the roles of the foreign language teachers, change the classroom teaching into the process of the two-way interaction between the teachers and the students, focus on the cultivation of the students＇ intercultural communicative competence, so that the students＇ language knowledge and their language abilities can promote each other, and obtain the coordinative development, to better adapt to the requirements of the times.展开更多
基金supported by National Natural Science Foundation of China (Grant No.61261017, No.61571143 and No.61561014)Guangxi Natural Science Foundation (2013GXNSFAA019334 and 2014GXNSFAA118387)+3 种基金Key Laboratory of Cognitive Radio and Information Processing, Ministry of Education (No.CRKL150112)Guangxi Key Lab of Wireless Wideband Communication & Signal Processing (GXKL0614202, GXKL0614101 and GXKL061501)Sci.and Tech.on Info.Transmission and Dissemination in Communication Networks Lab (No.ITD-U14008/KX142600015)Graduate Student Research Innovation Project of Guilin University of Electronic Technology (YJCXS201523)
文摘Offloading application to cloud can augment mobile devices' computation capabilities for the emerging resource-hungry mobile application, however it can also consume both much time and energy for mobile device offloading application remotely to cloud. In this paper, we develop a newly adaptive application offloading decision-transmission scheduling scheme which can solve above problem efficiently. Specifically, we first propose an adaptive application offloading model which allows multiple target clouds coexisting. Second, based on Lyapunov optimization theory, a low complexity adaptive offloading decision-transmission scheduling scheme has been proposed. And the performance analysis is also given. Finally, simulation results show that,compared with that all applications are executed locally, mobile device can save 68.557% average execution time and 67.095% average energy consumption under situations.
基金Project(61105067)supported by the National Natural Science Foundation of China
文摘A new multi-species particle swarm optimization with a two-level hierarchical topology and the orthogonal learning strategy(OMSPSO) is proposed, which enhances the global search ability of particles and increases their convergence rates. The numerical results on 10 benchmark functions demonstrated the effectiveness of our proposed algorithm. Then, the proposed algorithm is presented to design a butterfly-shaped microstrip patch antenna. Combined with the HFSS solver, a butterfly-shaped patch antenna with a bandwidth of about 40.1% is designed by using the proposed OMSPSO. The return loss of the butterfly-shaped antenna is greater than 10 d B between 4.15 and 6.36 GHz. The antenna can serve simultaneously for the high-speed wireless computer networks(5.15–5.35 GHz) and the RFID systems(5.8 GHz).
文摘The requirements of the college English curriculum teaching put forward the teaching objectives to cultivate the English comprehensive application abilities of the students, and improve their cultural qualities and their abilities of the independent learning, which pointed out the direction for the reform of the college English teaching. The language teaching mode based on the contents of the subject advocates that the knowledge learning and the language learning with the combination of the contents of the discipline, to develop the students＇ independent learning abilities, is a feasible and effective way to achieve the goal of the college English teaching. To cultivate the students＇ practical ability of using English is the basic task of the English teaching and learning. But China＇s current college English education failed to organically and effectively combine the teaching of the language knowledge and the cultivation of the language abilities and the teaching of the knowledge, leading to the existence of the obvious price scissors in the students＇ language knowledge and the language abilities. Therefore, the key to the reform of the college English teaching is to correctly position the roles of the foreign language teachers, change the classroom teaching into the process of the two-way interaction between the teachers and the students, focus on the cultivation of the students＇ intercultural communicative competence, so that the students＇ language knowledge and their language abilities can promote each other, and obtain the coordinative development, to better adapt to the requirements of the times.
