Hypertext transfer protocol(HTTP) adaptive streaming(HAS) plays a key role in mobile video transmission. Considering the multi-segment and multi-rate features of HAS, this paper proposes a buffer-driven resource manag...Hypertext transfer protocol(HTTP) adaptive streaming(HAS) plays a key role in mobile video transmission. Considering the multi-segment and multi-rate features of HAS, this paper proposes a buffer-driven resource management(BDRM) method to enhance HAS quality of experience(QoE) in mobile network. Different from the traditional methods only focusing on base station side without considering the buffer, the proposed method takes both station and client sides into account and end user's buffer plays as the drive of whole schedule process. The proposed HAS QoE influencing factors are composed of initial delay, rebuffering and quality level. The BDRM method decomposes the HAS QoE maximization problem into client and base station sides separately to solve it in multicell and multi-user video playing scene in mobile network. In client side, the decision is made based on buffer probe and rate request algorithm by each user separately. It guarantees the less rebuffering events and decides which HAS segment rate to fetch. While, in the base station side, the schedule of wireless resource is made to maximize the quality level of all access clients and decides the final rate pulled from HAS server. The drive of buffer and twice rate request schemes make BDRMtake full advantage of HAS's multi-segment and multi-rate features. As to the simulation results, compared with proportional fair(PF), Max C/I and traditional HAS schedule(THS) methods, the proposed BDRM method decreases rebuffering percent to 1.96% from 11.1% with PF and from 7.01% with THS and increases the mean MOS of all users to 3.94 from 3.42 with PF method and from 2.15 with Max C/I method. It also guarantees a high fairness with 0.98 from the view of objective and subjective assessment metrics.展开更多
Paulo Coelho＇s novels call into question the nature of the literary text and the act of reading in a post-Einsteinian world. Amidst the debate over his popular writings （Albanese; Ndagano）, the discussion turns to ...Paulo Coelho＇s novels call into question the nature of the literary text and the act of reading in a post-Einsteinian world. Amidst the debate over his popular writings （Albanese; Ndagano）, the discussion turns to whether Coelho continues a poetics of narrative developed by Jorge Luis Borges. This paper explores how Coelho＇s work may depart from a reading of Borges, yet goes beyond it into what Bakhtin established as ＂the Einsteinian universe applied to literary studies＂, as posited by Stone （2008）. Coelho＇s work is affected by hypertexts, new ways of connecting and perceiving subjectivities, and cross-cultural pilgrimages. A hermeneutic reading of his novel, The Zahir： A Novel of Obsession （2005b）, allows us to delve into the Coelhian the notion of the zahir as a tensional metaphor （Ricouer） of world-making （Valdes）. This underscores the postmodern assumption of the author as just another reader, albeit an ably active one. Through the courageous act of making his reading（s） transparent through writing, he invites other readers into the dialectical presumptions of his world.展开更多
Corpus-based linguistic approach is one of the most used text studies. Nowadays, stylistic analysis has been adopted to shed new light on tourism English. The topic is to apply the language theory--the stylistic analy...Corpus-based linguistic approach is one of the most used text studies. Nowadays, stylistic analysis has been adopted to shed new light on tourism English. The topic is to apply the language theory--the stylistic analysis to the tourist text analysis, to discover the style essence of Tourist English Hypertext. The stylistic features include graphological analysis of Tourist English Hypertext, lexical features in hypertext, syntactical analysis of Tourist English Hypertext. It summarizes online Tourist English Hypertext information with some typical samples, with the methods of examples and analysis. It aims to offer an in-depth insight into the stylistic features of online tourism English texts, helping people to grasp the key points of the online information when they are browsing the information on the Internet. So this paper both enlarges the application of the stylistic analysis and presents summary for online tourist information.展开更多
There are several software estimation models such as Line of Code, Function Point and COnstructive COst MOdel （COCOMO）. The original COCOMO model is one of the most widely practiced and popular among the software de...There are several software estimation models such as Line of Code, Function Point and COnstructive COst MOdel （COCOMO）. The original COCOMO model is one of the most widely practiced and popular among the software development community because of its flexible usage. It is a suite of models i.e., COnstructive Cost MOdel I and COnstructive Cost MOdel II. in this paper, we are evaluating the both models, to find out the level of efficiency they present and how they can be tailored to the needs of modem software development projects. We are applying COCOMO models on a case study of an e-commerce application that is built using Hyper Text Markup Language （HTML） and JavaScript. We will also shed light on the different components of each model, and how their Cost Drivers effect on the accuracy of cost estimations for software development projects.展开更多
Online literature contains both traditional text and hypertext. While traditional text containing ＂hypertextuality＂ provides the foundation for online literature, hypertext as the prevalent signifying medium of the ...Online literature contains both traditional text and hypertext. While traditional text containing ＂hypertextuality＂ provides the foundation for online literature, hypertext as the prevalent signifying medium of the cyberworld has awakened the latent energy and spirit of traditional text, making the latter more open, more autonomous and more interactive. The literature of ＂bits＂ points to the direction of future development. It deconstructs the traditional and overturns the nature of things through decentered ＂online reading and writing＂ that is uncertain and nonlinear. Hand in hand with post-modernism, hypertext has transformed literature＇s context and mode of existence. Above all, the shift to hypertext in online literature is transforming our mode of thinking and value criteria in relation to literature and aesthetics. We should therefore conduct in-depth and long-term explorations of how online literature may innovate while maintaining tradition.展开更多
基金supported by the 863 project (Grant No. 2014AA01A701) Beijing Natural Science Foundation (Grant No. 4152047)
文摘Hypertext transfer protocol(HTTP) adaptive streaming(HAS) plays a key role in mobile video transmission. Considering the multi-segment and multi-rate features of HAS, this paper proposes a buffer-driven resource management(BDRM) method to enhance HAS quality of experience(QoE) in mobile network. Different from the traditional methods only focusing on base station side without considering the buffer, the proposed method takes both station and client sides into account and end user's buffer plays as the drive of whole schedule process. The proposed HAS QoE influencing factors are composed of initial delay, rebuffering and quality level. The BDRM method decomposes the HAS QoE maximization problem into client and base station sides separately to solve it in multicell and multi-user video playing scene in mobile network. In client side, the decision is made based on buffer probe and rate request algorithm by each user separately. It guarantees the less rebuffering events and decides which HAS segment rate to fetch. While, in the base station side, the schedule of wireless resource is made to maximize the quality level of all access clients and decides the final rate pulled from HAS server. The drive of buffer and twice rate request schemes make BDRMtake full advantage of HAS's multi-segment and multi-rate features. As to the simulation results, compared with proportional fair(PF), Max C/I and traditional HAS schedule(THS) methods, the proposed BDRM method decreases rebuffering percent to 1.96% from 11.1% with PF and from 7.01% with THS and increases the mean MOS of all users to 3.94 from 3.42 with PF method and from 2.15 with Max C/I method. It also guarantees a high fairness with 0.98 from the view of objective and subjective assessment metrics.
文摘Paulo Coelho＇s novels call into question the nature of the literary text and the act of reading in a post-Einsteinian world. Amidst the debate over his popular writings （Albanese; Ndagano）, the discussion turns to whether Coelho continues a poetics of narrative developed by Jorge Luis Borges. This paper explores how Coelho＇s work may depart from a reading of Borges, yet goes beyond it into what Bakhtin established as ＂the Einsteinian universe applied to literary studies＂, as posited by Stone （2008）. Coelho＇s work is affected by hypertexts, new ways of connecting and perceiving subjectivities, and cross-cultural pilgrimages. A hermeneutic reading of his novel, The Zahir： A Novel of Obsession （2005b）, allows us to delve into the Coelhian the notion of the zahir as a tensional metaphor （Ricouer） of world-making （Valdes）. This underscores the postmodern assumption of the author as just another reader, albeit an ably active one. Through the courageous act of making his reading（s） transparent through writing, he invites other readers into the dialectical presumptions of his world.
文摘Corpus-based linguistic approach is one of the most used text studies. Nowadays, stylistic analysis has been adopted to shed new light on tourism English. The topic is to apply the language theory--the stylistic analysis to the tourist text analysis, to discover the style essence of Tourist English Hypertext. The stylistic features include graphological analysis of Tourist English Hypertext, lexical features in hypertext, syntactical analysis of Tourist English Hypertext. It summarizes online Tourist English Hypertext information with some typical samples, with the methods of examples and analysis. It aims to offer an in-depth insight into the stylistic features of online tourism English texts, helping people to grasp the key points of the online information when they are browsing the information on the Internet. So this paper both enlarges the application of the stylistic analysis and presents summary for online tourist information.
文摘There are several software estimation models such as Line of Code, Function Point and COnstructive COst MOdel （COCOMO）. The original COCOMO model is one of the most widely practiced and popular among the software development community because of its flexible usage. It is a suite of models i.e., COnstructive Cost MOdel I and COnstructive Cost MOdel II. in this paper, we are evaluating the both models, to find out the level of efficiency they present and how they can be tailored to the needs of modem software development projects. We are applying COCOMO models on a case study of an e-commerce application that is built using Hyper Text Markup Language （HTML） and JavaScript. We will also shed light on the different components of each model, and how their Cost Drivers effect on the accuracy of cost estimations for software development projects.
文摘Online literature contains both traditional text and hypertext. While traditional text containing ＂hypertextuality＂ provides the foundation for online literature, hypertext as the prevalent signifying medium of the cyberworld has awakened the latent energy and spirit of traditional text, making the latter more open, more autonomous and more interactive. The literature of ＂bits＂ points to the direction of future development. It deconstructs the traditional and overturns the nature of things through decentered ＂online reading and writing＂ that is uncertain and nonlinear. Hand in hand with post-modernism, hypertext has transformed literature＇s context and mode of existence. Above all, the shift to hypertext in online literature is transforming our mode of thinking and value criteria in relation to literature and aesthetics. We should therefore conduct in-depth and long-term explorations of how online literature may innovate while maintaining tradition.
