论电视文本的结构主义批评

结构主义研究方法对电视文本的解读具有十分重要的意义。“二元对立”原理主要用于对电视作品的分析,探索其内部结构基本模式;叙事学原理对电视语言进行分层次的研究可以得出较为理想的研究效果。正确地运用结构主义的解读方法,通过对创作者思维结构的把握,进一步挖掘作品结构内部更丰富更深层的东西,完整把握作品的思想性与艺术性。     

多媒体教学与现代教育课程改革

本文主要通过发挥多媒体信息集成控制、非线性网络结构组织信息、智能交互的特性和合理进行多媒体教学设计几个方面与现代教育课程相结合,阐述了如何进行教育教学方法的改革与创新。     

浅谈UPS的使用与维护

UPS意为“不间断供电电源”,对保护负载设备有重要作用。使用和维护UPS时,要根据负载合理选用UPS类型;UPS不宜长期处于满载或过度轻载状态下运行;要正确使用和维护UPS系统内的蓄电池;做好UPS电源线和通信线的防雷过压保护;要在UPS电源前科学加装交流稳压器;要定期对UPS进行检查和放电。     

Scheduling Truck Arrivals at an Air Cargo Terminal

We consider the scheduling of truck arrivals at an air cargo terminal. By coordinating arrivals of cargo delivery trucks with outbound flight departure schedules, some of the shipments can be transferred directly to the departing flights, while others will be stored at the terminal's storage facility and incur extra handling and storage costs. The objective is to obtain a feasible schedule so as to minimize the total cost of operations. We formulate the problem as a time‐indexed integer program and show that, even with limited number of unloading docks at the terminal, the problem is non‐trivial (NP‐hard in the strong sense). Our solution method includes an exact solution procedure to determine an optimal unloading sequence for the shipments carried by each truck, together with a Lagrangian relaxation‐based heuristic for assigning trucks to truck docks and determining truck arrival times. We conducted computational experiments to test the performance of our solution method. Computational results show that our method can generate near‐optimal solutions efficiently. Our simulation results indicate that the scheduling approach proposed in this paper has the potential to generate significant cost savings over a first‐come, first‐served approach currently used at the air cargo terminal that we observed.     

A lower bound for the centred L 2-discrepancy on combined designs under the asymmetric factorials

The foldover is a useful technique in the construction of two-level factorial designs for follow-up experiments. To search an optimal foldover plans is an important issue. In this paper, for a set of asymmetric fractional factorials such as the original designs, a lower bound for centred L ₂-discrepancy of combined designs under a general foldover plan is obtained, which can be used as a benchmark for searching optimal foldover plans. All of our results are the extended ones of Ou et al. [Lower bounds of various discrepancies on combined designs, Metrika 74 (2011), pp. 109–119] for symmetric designs to asymmetric designs. Moreover, it also provides a theoretical justification for optimal foldover plans in terms of uniformity criterion.     

Learning in and from projects: the learning modes and a learning capability model

Abstract

The notion of ‘project delivery’ is well embedded in and across the management and organizational sciences literature – generating a narrative that reflects and recognizes the instrumental nature of projects and programmes in strategy execution. Project management, as a distinct and well-established body of research enquiry, has increasingly sought to focus our attention on the impacts of complexity, risk and uncertainty in projects; the corollary being a desideratum to strengthen our theoretical understanding of how insight and learning from projects may influence improvements to organizational efficiency. The wider literature suggests that organizational learning remains a challenging proposition, particularly in the context of organizations operating in environments of high complexity. In this paper, we enhance the conversation on organizational learning through a series of case studies, generating evidence of thirteen ‘learning modes’. The paper proposes that mature organizations tend to exhibit a greater number of learning modes and that there is a tendency to capture and socialize knowledge with a greater emphasis on the context of the learning situation rather than the learning artefact in isolation. The empirical evidence gathered in this paper forms the basis of a capability model, characterized by the thirteen modes of learning. The model intimates that learning occurs, and is more effective, when knowledge and information are enacted in practice through the learning modes which form a nucleus of the organizational learning capability. The research concludes with a 'call to action' that emphasizes the strategic importance of learning practices and routines in project oriented-organizations.     

高校组织人事干部队伍素质建设刍议

本文着重探讨了新形势下高校组织人事干部应具备的思想政治素质和业务素质,提出了培养和提高组织人事干部素质的主要途径。     

几个玉米自交系农艺性状的配合力分析

采用Griffing完全双列杂交方法 4对西南农业大学农学系新选育的 7个玉米自交系单株产量、穗长、穗重、穗粗、穗位高、株高进行了一般配合力和特殊配合力的测定。结果表明 :这 6个性状组合间都存在显著差异 ;一般配合力高的自交系其特殊配合力也高。其中 ,产量的一般配合力以丙 1 0最高 ,SS1 - 1 8×丙 1 0的产量特殊配合力最高。     

Evaluations of FDR-controlling procedures in multiple hypothesis testing

Many exploratory experiments such as DNA microarray or brain imaging require simultaneously comparisons of hundreds or thousands of hypotheses. Under such a setting, using the false discovery rate (FDR) as an overall Type I error is recommended (Benjamini and Hochberg in J. R. Stat. Soc. B 57:289–300, 1995). Many FDR controlling procedures have been proposed. However, when evaluating the performance of FDR-controlling procedures, researchers are often focused on the ability of procedures to control the FDR and to achieve high power. Meanwhile, under the multiple hypotheses, it may be also likely to commit a false non-discovery or fail to claim a true non-significance. In addition, various experimental parameters such as the number of hypotheses, the proportion of the number of true null hypotheses to the number of hypotheses, the samples size and the correlation structure may affect the performance of FDR controlling procedures. The purpose of this paper is to illustrate the performance of some existing FDR controlling procedures in terms of four indices, i.e., the FDR, the false non-discovery rate, the sensitivity and the specificity. Analytical results of these indices for the FDR controlling procedures are derived. Simulations are also performed to evaluate the performance of controlling procedures in terms of these indices under various experimental parameters. The result can be used to summarize as a guidance for practitioners to properly choose a FDR controlling procedure.     

古代文体学的学理构成

古代文体学的学理构成,大体包括文学文体学、文章文体学与文化文体学三个层面,具体分文体形态学、文体起源学、文体命名学、文体范畴学、文体分类学、文体史学、文体创作学、文体艺术学等,是一完整独立而又开放的学科体系.中国古代文体概念,类似于西方的文类概念,西方文体(style)概念,则类似中国古代风格概念.不存在纯粹的"文学文体",也没有纯粹的"应用文体".以内容、风格、功用为标准界定和划分文体,是不科学的,只能以体式为标准.文体分类,"一分为三"比"一分为二"更合理.现代文体分类四分法,与古代文体学原生态相差较大,造成流弊.文体在不断新生与淘汰过程中发展,文体演进是封闭性与开放性、纯洁性与包容性、逻辑性与非逻辑性的统一,它如同一条连续不断的长河,前后古今不是沟、界,而是环环相连.