电泳柔性生产线基于多重任务队列的实时动态调度

提出可变优先级的多重任务队列方法，解决电泳柔性生产线自动输送系统的实时动态调度问题。该方法充分考虑了系统资源约束及相互之间的影响，解决了自动输送系统各运输天车的负荷平衡和冲突问题。基于事件驱动的调度实现方法具有很好的实时性与可重调度性。南平铝厂电泳自动生产线的应用，有效提高了车间生产效率和生产效益，表明了该方法的有效性与实用性。     

马钢上半年重点建设项目进展顺利

提前启动投资250亿资金的马钢“十一五”重点建设项目——年产钢500万t新区建设进度加快，进展顺利，上半年累计完成投资27．6亿元，占当年计划的60．38％，顺利实现双过半目标任务。     

浅析开发0RACLE数据库应用软件的连接方式

介绍了目前在开发数据库应用程序时采用的体系架构，并对常用的几种访问Oracle数据库的连接方式进行分析，提出了在应用开发过程中对Oracle数据库帐户信息进行加密使用和对Oracle数据库进行多次连接验证的方法连接数据库，达到增强系统安全性。     

计算机控制技术在热轧新平整分卷线中的应用

介绍了在新的服务器环境中组建热轧新平整分卷线二级计算机运用平台的设计方法，从Oracle数据库的安装、网络配制、系统环境变量设置、应用程序、通讯程序、数据库接口程序的安装、编译，进程的启动等方面作了详细阐述。     

英语任务型教学设计

新课程下的英语教学要求学生听说读写全面发展，而英语知识的散碎性又意味着记忆的不断重复性。那么把学生抓在手中让他们跟着学，有兴趣学就变得非常重要。这就要求英语教学设计日臻精致、完美、行之有效和富于独创性。任务型教学就是一种行之有效的方法。它立足于学生本身，把学生作为教学的主体，教师从学生“学”的角度设计出各种教学活动，使学生在完成各种任务的过程中逐步形成运用语言的能力，学会自主学习。     

以岗位任务为目标的文秘英语课程项目改革

以岗位任务为目标的项目课程研究是一种新型的课堂教学模式,它以职业性为原则,以任务活动为主要途径,使教学过程任务化,充分确立了学生的主体地位,培养学生综合运用语言的能力.     

Oracle8PL／SQL编程风格与系统性能的提高

介绍Oracle8PL／SQL程序设计中，提高系统性能的绾程风格的几种方法，存储过程及触发器的使用、错误处理等。     

教学内容与RPG类游戏任务融合研究——任务驱动式教育游戏设计探微

教育与游戏的融合是教育游戏取得成功的关键,已有的研究侧重于从教学机制方面研究两者的融合,关于教育与游戏的内在、具体的融合方式的研究较为缺乏.作者试图从教学内容和游戏任务系统的内在结构探求教育与游戏的融合方式.认为将教学内容融入游戏的任务系统是实现二者有机融合的有效途径,并结合案例阐述了任务驱动式教育游戏设计的基本思想、结构及过程.     

任务型英语阅读教学读后活动与能力整合

从一个中心(语言学习者),两个阶段(任务完成中和任务完成后),三个维度(语言学习者、阅读材料、教师)来探索语言学习者在任务型阅读教学之后的各项活动、行为和培养、提高学习者的四个语言基本技能层面(听、说、读、写)的学习策略整合,旨在了解学生不同读后学习行为习惯,帮助教师鉴定学生的不同的读后表现与需求,力求在动态的学习过程中落实语言学习者、阅读材料、教师间的多层互动,实现读后任务与语言学习策略及语言能力的理想整合。     

教学过程动态管理方法探讨

教学管理是技工学校管理的重要组成部分，它是教学管理者通过一定的管理手段，使教学活动达到既定目标的过程。其主要任务是在教学过程中，根据教学规律，按照一定的原则，遵循一定的程序和方法，对教与学双方进行计划、组织、调度、检查和总结，保证教学任务的完成，以培养符合现代生产要求的技术工人。     

Estimating Work Zone Road User Cost for Alternative Contracting Methods in Highway Construction Projects

Highway construction often causes an additional road user cost (RUC) to motorists due to traffic flow interruption and congestion in work zones. Consequently, facility owners, such as the Florida Department of Transportation (FDOT), are often interested in using alternative contracting methods such as A+B contracting to expedite construction. Although many of these contracting methods rely on the RUC to determine incentives or disincentives, no standard method for RUC calculation is available to FDOT district engineers. In addition, existing methods are neither practical nor user-friendly for determining incentives or disincentives. This study intends to develop a RUC calculation procedure for the FDOT that focuses on using data that are easily accessible to FDOT district engineers, such as drawings and maintenance of traffic plans. The procedure is developed based on traffic analysis methods published in the Highway Capacity Manual, previous studies on user benefit analysis and work zones, and empirical data specific to Florida. Case studies are used to illustrate the procedure and to compare it with two other existing models, the Arizona model and the queue and user cost evaluation of work zone model, through correlation analysis, comparison of calculation assumptions, and data input analysis. This study shows that the suggested procedure produces consistent RUC estimates.     

Working Memory, Task Switching, and Executive Control in the Task Span Procedure.

Four experiments explored the task span procedure: Subjects received lists of 1-10 task names to remember and then lists of 1-10 stimuli on which to perform the tasks. Task span is the number of tasks performed in order perfectly. Experiment 1 compared the task span with the traditional memory span in 6 practiced subjects and found little difference. Experiment 2 compared the task span and the memory span in 64 unpracticed subjects and also found little difference. Experiment 3 compared practice with consistent and varied lists to address retrieval from long-term memory. Experiment 4 manipulated the number of task switches and found that it had little effect on task spans. The results suggest there is no trade-off between storage and task switching, which supports some theories of executive control and challenges others. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Better learning with more error: Probabilistic feedback increases sensitivity to correlated cues in categorization.

Despite the fact that categories are often composed of correlated features, the evidence that people detect and use these correlations during intentional category learning has been overwhelmingly negative to date. Nonetheless, on other categorization tasks, such as feature prediction, people show evidence of correlational sensitivity. A conventional explanation holds that category learning tasks promote rule use, which discards the correlated-feature information, whereas other types of category learning tasks promote exemplar storage, which preserves correlated-feature information. Contrary to that common belief, the authors report 2 experiments that demonstrate that using probabilistic feedback in an intentional categorization task leads to sensitivity to correlations among nondiagnostic cues. Deterministic feedback eliminates correlational sensitivity by focusing attention on relevant cues. Computational modeling reveals that exemplar storage coupled with selective attention is necessary to explain this effect. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Dynamic Allocation of Ragged Arrays Using C++: Potentiality for Finite-Element Method Software

A ragged array is an irregularly shaped data structure that is an extremely convenient and natural means of implementing storage schemes that exploit the symmetry and sparsity of the different stiffness matrices involved in the finite-element method. Ragged arrays have the potential for improving the programmer’s productivity as well as enhancing code maintainability. Additionally, no performance degradation was detected when ragged arrays were used; the performance of the Gauss elimination procedure, implemented in C++ using ragged arrays, was comparable to the performance of the same procedure implemented in FORTRAN using traditional data structures.     

Experimental Assessment of Bacterial Storage Yield

An experimental procedure was developed for the respirometric determination of bacterial storage yield as defined in the Activated Sludge Model No. 3. The proposed approach is based on the oxygen utilization rate (OUR) profile obtained from a batch test and correlates the area under the OUR curve to the amount of oxygen associated with substrate storage. Model simulation was used to evaluate the procedure for different initial experimental conditions. The procedure was tested on acetate. The same storage yield value of 0.76 gCOD/gCOD was calculated for two experiments, starting with different F/M ratios of 0.12 and 0.64 gCOD/g cellCOD.     

Effects of increased processing demands on age differences in working memory.

Three studies investigated (a) the plausibility of the claim that increasing the processing demands in a memory task contributes to greater involvement of a central processor and (b) the effects of altering reliance on the central processor on the magnitude of age-related differences in working-memory tasks. In the first study, young adults performed versions of 2 tasks presumed to vary in the degree of reliance on the central processor. In the second and third studies, young and older adults performed versions of a computation-span task that were assumed to vary along a rough continuum of the amount of required processing. The results indicated that although a central processor appears to be involved when working-memory tasks require simultaneous storage and processing of information, age related differences in working memory seem to be determined at least as much by differences in the capacity of storage as by differences in the efficacy of processing. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The separability of working memory resources for spatial thinking and language processing: An individual differences approach.

The current study demonstrates the separability of spatial and verbal working memory resources among college students, In Experiment 1, we developed a spatial span task that taxes both the processing and storage components of spatial working memory. This measure correlated with spatial ability (spatial visualization) measures, but not with verbal ability measures. In contrast, the reading span test, a common test of verbal working memory, correlates with verbal ability measures, but not with spatial ability measures. Experiment 2, which uses an interference paradigm to cross the processing and storage demands of span tasks, replicates this dissociation and further demonstrates that both the processing and storage components of working memory tasks are important for predicting performance on spatial thinking and language processing tasks. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Optimization of Resource Allocation and Leveling Using Genetic Algorithms

Resource allocation and leveling are among the top challenges in project management. Due to the complexity of projects, resource allocation and leveling have been dealt with as two distinct subproblems solved mainly using heuristic procedures that cannot guarantee optimum solutions. In this paper, improvements are proposed to resource allocation and leveling heuristics, and the Genetic Algorithms (GAs) technique is used to search for near-optimum solution, considering both aspects simultaneously. In the improved heuristics, random priorities are introduced into selected tasks and their impact on the schedule is monitored. The GA procedure then searches for an optimum set of tasks' priorities that produces shorter project duration and better-leveled resource profiles. One major advantage of the procedure is its simple applicability within commercial project management software systems to improve their performance. With a widely used system as an example, a macro program is written to automate the GA procedure. A case study is presented and several experiments conducted to demonstrate the multiobjective benefit of the procedure and outline future extensions.     

Interspersing additional easier items to enhance mathematics performance on subtests requiring different task demands.

The current study was conducted to extend research on the interspersal procedure using standardized mathematics subtests with different task demands. Thirty, Grade 7, at-risk students were administered Forms A and B of the Mental Computation and Multiplication subtests of the KeyMath-Revised (KM-R; A. J. Connolly, 1988). For each subtest, students were administered a control subtest and an experimental subtest that contained additional easier items interspersed among standard items. Results showed that the interspersal procedure enhanced academic performance on the Mental Computation subtest, but not the Multiplication subtest. These results indicate that the efficacy of the interspersal procedure is affected differentially by task demands. Findings support N. A. Neef, B. A. Iwata, and T. J. Page's (1977, 1980) hypothesis that the interspersal procedure may increase rates of reinforcement, which enhances students' attention to tasks and their performance on tasks that require high levels of sustained attention. Discussion focuses on applied and theoretical implications of identifying the mechanisms that contribute to the effectiveness of interspersal procedures. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Different ways of encoding geometric information by goldfish (Carassius auratus).

On the basis of results of a probe trial in 2 different experiments, K. Cheng (2005) has proposed a common mechanism for orientation in fish trained in both a maplike or relational procedure and a directly cued procedure. However, K. Cheng's model is inconsistent with previous results of goldfish (Carassius auratus) trained in these 2 tasks. Given that K. Cheng's proposal assumes that fish choose the goal by using a matching strategy in which they try to match as many properties as possible, including geometric and featural properties, future research is necessary to clarify what properties of the environmental space are codified and used for navigation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)