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排序方式: 共有1174条查询结果,搜索用时 15 毫秒
81.
We extended the application of Roger's model for evaluating the institutional forces influencing the adoption intention of RFID by retailer's suppliers. Drawing on institutional theory, we examined how different institutional forces experienced by retailer's suppliers were related to their relational investment on inter-organizational information sharing. Data collected from 130 major Taiwanese suppliers was used in our empirical analyses. We found that relational investment was the most critical adoption factor, which also indirectly enhanced organizational readiness for technological adoption intention. From a Taiwanese perspective, our findings should be helpful in understanding what factors significantly impact the adoption of RFID technology. 相似文献
82.
Jin Yuan Cheng-Liang Liu Xuemei Liu Kesheng Wang Tao Yu 《Expert systems with applications》2009,36(4):8084-8092
Sufficient sampling is usually time-consuming and expensive but also is indispensable for supporting high precise data-driven modeling of wire-cut electrical discharge machining (WEDM) process. Considering the natural way to describe the behavior of a WEDM process by IF-THEN rules drawn from the field experts, engineering knowledge and experimental work, in this paper, the fuzzy logic model is chosen as prior knowledge to leverage the predictive performance. Focusing on the fusion between rough fuzzy system and very scarce noisy samples, a simple but effective re-sampling algorithm based on piecewise relational transfer interpolation is presented and it is integrated with Gaussian processes regression (GPR) for WEDM process modeling. First, by using re-sampling algorithm encoded derivative regularization, the prior model is translated into a pseudo training dataset, and then the dataset is trained by the Gaussian processes. An empirical study on two benchmark datasets intuitively demonstrates the feasibility and effectiveness of this approach. Experiments on high-speed WEDM (DK7725B) are conducted for validation of nonlinear relationship between the design variables (i.e., workpiece thickness, peak current, on-time and off-time) and the responses (i.e., material removal rate and surface roughness). The experimental result shows that combining very rough fuzzy prior model with training examples still significantly improves the predictive performance of WEDM process modeling, even with very limited training dataset. That is, given the generalized prior model, the samples needed by GPR model could be reduced greatly meanwhile keeping precise. 相似文献
83.
Processing is a programming language and environment built for the media arts communities. It is created to teach fundamentals of computer programming within the media arts context and to serve as a software sketchbook. It is used by students, artists, designers, architects, and researchers for learning, prototyping, and production. This essay discusses the ideas underlying the software and presents its relationship to open source software and the idea of software literacy. Additionally, Processing is discussed in relation to education and online communities. 相似文献
84.
A new approach for estimating null value in relational database 总被引:1,自引:0,他引:1
Ching-Hsue Cheng Jia-Wen Wang 《Soft Computing - A Fusion of Foundations, Methodologies and Applications》2006,10(2):104-114
In general, a database system will not operate properly if it exist some null values of attributes in the system. In this paper, we propose a new approach to estimate null values in relational database, which utilize other clustering algorithm to cluster data, and use fuzzy correlation and distance similarity to calculate the correlation of different attribute. For verifying our method, this paper utilize mean of absolute error rate (MAER) as evaluation criterion to compare with other methods; it is shown that our proposed method proves importance than the existing methods for estimating null values in relational database systems. 相似文献
85.
Proctor C. Patrick; August Diane; Carlo María S.; Snow Catherine 《Canadian Metallurgical Quarterly》2006,98(1):159
This study explored a holistic model of English reading comprehension among a sample of 135 Spanish-English bilingual Latina and Latino 4th-grade students This model took into account Spanish language reading skills and language of initial literacy instruction. Controlling for language of instruction, English decoding skill, and English oral language proficiency, the authors explored the effects of Spanish language alphabetic knowledge, fluency, vocabulary knowledge, and listening comprehension on English reading comprehension. Results revealed a significant main effect for Spanish vocabulary knowledge and an interaction between Spanish vocabulary and English fluency, such that faster English readers benefited more from Spanish vocabulary knowledge than their less fluent counterparts. This study demonstrates the existence of literary skills transfer from the 1st to the 2nd language, as well as limits on such transfer. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
86.
Family involvement in school and low-income children's literacy: Longitudinal associations between and within families. 总被引:2,自引:0,他引:2
Dearing Eric; Kreider Holly; Simpkins Sandra; Weiss Heather B. 《Canadian Metallurgical Quarterly》2006,98(4):653
Longitudinal data from kindergarten to 5th grade on both family involvement in school and children's literacy performance were examined for an ethnically diverse, low-income sample (N = 281). Within families, increased school involvement predicted improved child literacy. In addition, although there was an achievement gap in average literacy performance between children of more and less educated mothers if family involvement levels were low, this gap was nonexistent if family involvement levels were high. These results add to existing evidence on the value of family involvement in school by demonstrating that increased involvement between kindergarten and 5th grade is associated with increased literacy performance and that high levels of school involvement may have added reward for low-income children with the added risk of low parent education. As such, these results support arguments that family involvement in school should be a central aim of practice and policy solutions to the achievement gap between lower and higher income children. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
87.
Marilyn M. Cooper Author Vitae 《Computers and Composition》2005,22(1):31-38
Kress encourages us to understand writing as “transformative engagement in the world,” and his emphasis on the materiality of modes draws our attention to the multiple possibilities offered by different materials and sensory channels. Writing involves the transformation of all aspects of the resources for meaning; thus writing is always an ethical act, and the worlds that different cultures and communities bring forth through their semiotic work offer different possibilities of being. 相似文献
88.
Isabelle定理证明器中的证明步骤和证明状态是非常具有参考价值的证明信息。然而目前没有工具可以有效管理这些信息。本文给出一个基于Isabelle的信息系统设计方案。利用该系统的实现,用户可以提取、保存和搜索这两种证明信息。 相似文献
89.
水资源工程技术方案灰色优选模型 总被引:1,自引:0,他引:1
应用灰色系统理论的灰色关联方法,建立了水资源工程技术方案的灰色优选模型,经实例分析,证明该模型是可行的。 相似文献
90.
关系模式到XML模式的影射 总被引:13,自引:4,他引:13
在总结用DTD文档描述关系模式向XML模式转换信息的基础上,利用XML Schema相对于DTD更为强大的描述能力的特性,实现了关系模式向XML模式的完全转换。 相似文献