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Glass  R.L. 《Software, IEEE》2005,22(6):112-112
The field of software engineering would greatly benefit from detailed research on why some software builders perform better than others, but this isn't happening.  相似文献   

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In this inductive study we explore the relational microdynamics of organizational resilience in adventure racing. Drawing from an organizing lens, we frame resilience as an ongoing process by which organizational actors work together to absorb strain and maintain functioning within dynamically uncertain and adverse environments. Adventure racing exemplifies such a context: stress, technological breakdowns, and untoward environmental conditions are both frequent and unpredictable. By analyzing and triangulating interview data from 103 members of 53 adventure racing teams, we found that racers experienced ongoing adversity punctuated by discrete acute shocks. Moreover, resilience was accomplished and re-accomplished through processes of interrelating, in which racers worked together to mutually adjust roles and engagement, coordinated through distributed sensemaking. These processes allowed racers to better align with reality from one moment to the next, not only responding to and absorbing adversity as it arose but also shaping their emergent context. The patterns of interrelating established in response to adversity fuelled cycles of resilience or vulnerability and the capability to manage strain over the longer term. Our findings suggest resilience in organizations is more impermanent, enacted and relational than conceptual models currently portray.  相似文献   

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本文讨论了单层物理层用户数据传输平台体系结构网络(SUPANET)中特有的专用连接释放协议(CEP—Connection Ending Protocol)。文中分析了采用独立的CEP的必要性,讨论了CEP协议数据单元格式、CEP运作过程以及与用户数据传输平台之间的协作关系,文中重点讨论了在三次握手的基础上实现的协商拆除和单方面主动或异常拆除连接的处理。  相似文献   

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Which processor interconnection method makes a modular, reconfigurable system perform best in a given application? Certain tools and strategies help provide the answer.  相似文献   

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The primary aims of this study were to establish a client injury baseline for the New Zealand adventure tourism and adventure sport sector, and to examine patterns and trends in claims for injury during participation in adventure activities. Content analysis of narrative text data for compensated injuries occurring in a place for recreation and sport over a 12-month period produced over 15,000 cases involving adventure tourism and adventure sport. As found in previous studies in New Zealand, highest claim counts were observed for activities that are often undertaken independently, rather than commercially. Horse riding, tramping, surfing and mountain biking were found to have highest claim counts, while hang gliding/paragliding/parasailing and jet boating injuries had highest claim costs, suggesting greatest injury severity. Highest claim incidence was observed for horse riding, with female claimants over-represented for this activity. Younger male claimants comprised the largest proportion of adventure injuries, and falls were the most common injury mechanism.  相似文献   

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The CAB 500 was planned by SEA as a low cost, simple to use computer, primarily for scientific calculations. The technology used was magnetic amplifiers, transistors, ferrite cores, and a magnetic drum, with input/output on perforated paper tape. It could be used in two modes: as a stored program computer or as a desk calculator. It was a micro-programmed machine, and a high-level language PAF (Programmation Automatique des Formules) was developed for it. It was launched in 1960 and over 100 were sold.  相似文献   

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韩国首尔为期四天的“全球游戏展G-STAR 2014”盛宴圆满落幕,来自全球35个国家的617家国内外游戏企业参展,规模创历届之最,参展人数创下纪录,预估为20万509人次。
  除了BTC和BTB展览之外,为庆祝G-STAR十周年,历届以来最大规模G-STAR 2014还举办了各种纪念活动,例如一些附加的G-STAR十周年庆祝活动;此外,本届游戏展不仅规模超历届,而且为参展者提供相当优质的内容和活动,提高了参展者对游戏展的满意度。  相似文献   

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介绍了OSPF协议中最重要的两个部分———寻径和L-S信息广播处理。并且对他们的算法及复杂性作出了分析。在分析的基础上,将L-S信息广播处理改为在哈密顿回路上单点发送L-S信息,发送次数为n,并且给出两个哈密顿回路算法及其分析。  相似文献   

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This paper presents an innovative solution to model distributed adaptive systems in biomedical environments. We present an original TCBR-HMM (Text Case Based Reasoning-Hidden Markov Model) for biomedical text classification based on document content. The main goal is to propose a more effective classifier than current methods in this environment where the model needs to be adapted to new documents in an iterative learning frame. To demonstrate its achievement, we include a set of experiments, which have been performed on OSHUMED corpus. Our classifier is compared with Naive Bayes and SVM techniques, commonly used in text classification tasks. The results suggest that the TCBR-HMM Model is indeed more suitable for document classification. The model is empirically and statistically comparable to the SVM classifier and outperforms it in terms of time efficiency.  相似文献   

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Today many young people form and maintain what they consider friendships through the net. Internet friendship appears to some as modifying the meaning of real friendship and replacing it with something more trivial. In this paper we explore the complexity of online friendship. We start by seeking to gain an understanding of why and how friendship relates to wellbeing. We then look at how friendships are formed, focusing on the concepts of propinquity and homophily and how they play out within the context of online friendships. We delineate the major dimensions of friendship that have emerged in theory and research and then comment on how these features of friendship may be affected by the advent of widespread electronic communication. The differences between offline and online companionship, social support, tangible support and protection, exclusiveness, conflict resolution and relationship stability are also considered. The chapter concludes with a discussion of the challenges of conducting research on the behaviour of children and young people on the Internet and the difficulties in defining the term “friendship.”  相似文献   

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Team workload, which is usually described as an index of the ratio of available team resources to task demands, is believed to be critical for optimal human–computer integration. Although research conceptualizing team workload suggests that the measurement of team workload should consider workload unique to the team, the sum/min/max of members’ workload associated with taskwork referring to individual task performance is often used as an indicator of team workload. In order to better assess workload in team performance in which more than two individuals cooperate and conduct a task, it is also necessary to assess members’ workload associated with teamwork that refers to interpersonal interactions among individuals. The present study aims to develop a measure of workload associated with teamwork and discuss its contribution to operationalizing team workload. Results of team experiments indicate that the Teamwork Workload Scale is able to assess workload associated with teamwork and that it is necessary to assess both workload associated with taskwork and teamwork in order to better assess workload in team performance and operationalize team workload. In order to operationalize and measure team workload, it is necessary to investigate workload in team performance using quantitative data.  相似文献   

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Through the use of an extended field programmable gate array (FPGA) technology, a large digital circuit can be realized on a relatively small amount of real hardware. Several configuration RAM modules are provided inside the FPGA chip, and the configuration of the gate array can be rapidly changed by replacing the active module. Data for configuration are transferred from an off-chip backup RAM to an unused configuration RAM module. A novel computation mechanism called the WASMII, which executes a target dataflow graph directly, can be proposed on the basis of this virtual hardware. A WASMII chip consists of the FPGA for virtual hardware and an additional mechanism to replace configuration RAM modules in a data-driven manner. Configuration data are preloaded in the order assigned in advance by a static scheduling preprocessor. By connecting a number of WASMII chips, a highly parallel system can be easily constructed.  相似文献   

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一种高性能大数模幂协处理器SEA   总被引:3,自引:0,他引:3  
大数模幂是许多公钥算法中的主要操作和计算瓶颈.SEA是一种针对大数模幂的高性能协处理器,其主要采用如下3种加速方法:①采用二进制并行模幂算法(PBME)和以基数长度为处理字长的高基数Montgomery算法(RBHRMMM);②将算法映射到脉动阵列处理结构,并交替计算平方和乘以掩盖RBHRMMM算法中的相关,同时应用定向技术消除PBME算法中的相关;③基于“先拆分乘法、后将累加压缩”的思想优化关键路径.SEA完成1024b完整大数模幂仅需72738个时钟周期,采用基于标准单元的正向设计流程实现,其面积为4.2×4.2mm2,等效门数为739933.目前,SEA已经在0.18μm1P6MCMOS工艺上流片成功,主频133MHz,峰值功耗为962.26mW,使用SEA后,完成一次1024bRSA签名仅需316.9μs.  相似文献   

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We have developed a bilingual interface to the Novell network operating system, called the Dialoguer. This system carries on a conversation with the user in Arabic or English or a combination of the two and attempts to help the user use the Novell network operating system. Learning to use an operating system is a major barrier in starting to use computers. There is no single standard for operating systems which makes it difficult for novice users to learn a new operating system. With the proliferation of client–server environments, users will eventually end up using one network operating system or another. These problems motivated our choice of an area to work in and they have made it easy to find real users to test our system.
This system is both an expert system and a natural language interface. The system embodies expert knowledge of the operating system commands and of a large variety of plans that the user may want to carry out. The system also contains a natural language understanding component and a response generation component. The Dialoguer makes extensive use of case frame tables in both components. Algorithms for handling a bilingual dialogue are one of the important contributions of this paper along with the Arabic case frames.  相似文献   

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The use of diverse knowledge sources in text recognition and in correction of letter substitution errors in words of text is considered. Three knowledge sources are defined: channel characteristics as probabilities that observed letters are corruptions of other letters, bottom-up context as letter conditional probabilities (when the previous letters of the word are known), and top-down context as a lexicon. Two algorithms, one based on integrating the knowledge sources in a single step and the other based on sequentially cascading bottom-up and top-down processes, are compared in terms of computational/storage requirements and results of experimentation.  相似文献   

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