Electromagnetic effects on the biological tissue surrounding a transcutaneous transformer for an artificial anal sphincter system     

Zan P  Yang BH  Shao Y  Yan GZ  Liu H 《Journal of Zhejiang University. Science. B》2010,11(12):931-936

This paper reports on the electromagnetic effects on the biological tissue surrounding a transcutaneous transformer for an artificial anal sphincter. The coupling coils and human tissues, including the skin, fat, muscle, liver, and blood, were considered. Specific absorption rate (SAR) and current density were analyzed by a finite-length solenoid model. First, SAR and current density as a function of frequency (10–10⁷ Hz) for an emission current of 1.5 A were calculated under different tissue thickness. Then relations between SAR, current density, and five types of tissues under each frequency were deduced. As a result, both the SAR and current density were below the basic restrictions of the International Commission on Non-Ionizing Radiation Protection (ICNIRP). The results show that the analysis of these data is very important for developing the artificial anal sphincter system.  相似文献   

Impulsive control for passivity and exponential synchronization of coupled neural networks with multiple weights     

Hong-An Tang  Jin-Liang Wang  Lidan Wang  Xiaofang Hu  Yue Zhou  Shukai Duan 《Journal of The Franklin Institute》2019,356(10):5434-5463

This paper investigates the passivity and synchronization problems for two classes of multiple weighted coupled neural networks (MWCNNs) with or without time delays. Firstly, by utilizing an impulsive control strategy and some inequality techniques, several passivity criteria for MWCNNs with diverse dimensions of output and input are established. Then, based on the Lyapunov functional, some sufficient conditions to ensure the synchronization of MWCNNs via impulsive control are derived. In addition, combined with the comparison principle and the impulsive delay differential inequality, the global exponential synchronization of MWCNNs with time-varying delays is considered under impulsive control. Finally, two numerical examples illustrate the effectiveness of the obtained results.  相似文献   

Toward an Ethical Rhetoric of the Digital Scientific Image: Learning From the Era When Science Met Photoshop     

Jonathan Buehl 《Technical Communication Quarterly》2014,23(3):184-206

Over the past two decades, scientific editors have attempted to correct “mistaken” assumptions about scientific images and to curb unethical image-manipulation practices. Reactions to the advent and abuse of image-adjustment software (such as Adobe Photoshop) reveal the complex relations among visual representations, scientific credibility, and epistemic rhetoric. Perelman and Olbrechts-Tyteca's model of argumentation provides a flexible system for understanding these relations and for teaching students to use scientific images ethically and effectively.  相似文献   

Applying artificial intelligence technique to predict knowledge hiding behavior     

《International Journal of Information Management》2019

Drawing on psychological ownership and social exchange theories, this study suggests theoretical arguments and empirical evidence for understanding employee reactions to distributive, procedural, and interactional (in)justice — three crucial bases of employees’ feelings of social self-worth. Utilizing field data and artificial intelligence technique, this paper reveals that distributive, procedural, and interactional (in)justice contribute to higher levels of knowledge hiding behavior among employees and that this impact is non-linear (asymmetric). By reuniting the discourses of organizational justice and knowledge management, this study indicates that feelings of psychological ownership of knowledge and the degree of social interaction are mechanisms that work with organizational (in)justice to influence knowledge hiding behavior. The current research may inform contemporary theories of business research and provide normative guidance for managers.  相似文献   

Negation recognition in medical narrative reports   总被引：1，自引：0，他引：1  

Lior Rokach  Roni Romano  Oded Maimon 《Information Retrieval》2008,11(6):499-538

Substantial medical data, such as discharge summaries and operative reports are stored in electronic textual form. Databases containing free-text clinical narratives reports often need to be retrieved to find relevant information for clinical and research purposes. The context of negation, a negative finding, is of special importance, since many of the most frequently described findings are such. When searching free-text narratives for patients with a certain medical condition, if negation is not taken into account, many of the documents retrieved will be irrelevant. Hence, negation is a major source of poor precision in medical information retrieval systems. Previous research has shown that negated findings may be difficult to identify if the words implying negations (negation signals) are more than a few words away from them. We present a new pattern learning method for automatic identification of negative context in clinical narratives reports. We compare the new algorithm to previous methods proposed for the same task, and show its advantages: accuracy improvement compared to other machine learning methods, and much faster than manual knowledge engineering techniques with matching accuracy. The new algorithm can be applied also to further context identification and information extraction tasks.

Lior RokachEmail:

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中西翻译实践中的暴力操纵思辨     

赵朋 《闽江学院学报》2008,29(6)

传统的翻译理论注重标准的厘定及其时标准的遵守,但翻译中所体现的政治和意识形态以及翻译实践中的暴力操纵对翻译的“忠实”原则给予了无情的解构。因此,探讨翻译背后的暴力问题、译者在其间的特殊身份以及减轻暴力操纵的方法是译介研究的一个重要论题。  相似文献   

操纵翻译理论介绍及其对中国文学翻译的启示   总被引：1，自引：0，他引：1  

张彩虹 《河北师范大学学报(教育科学版)》2008,10(4):138-141

操纵理论虽然产生于上世纪六、七十年代的西方,但有关其内容的介绍在我国却始于上世纪末。它的问世给文学翻译带来了研究问题的新思想和方法,对中国文学翻译研究活动无论是在理论上还是在实践上都有不小的启示。  相似文献   

基于NN的随动系统故障诊断     

王青海 《河西学院学报》2008,24(5)

文章首先介绍了人工神经网络的基本原理,其次讨论了反向传播算法,并针对传统BP算法的不足设计了一种基于参数动态改变的BP算法,最后研究了新的算法在某武器随动系统诊断方面的应用.  相似文献   

基于免疫算法和人工势场的移动机器人路径规划     

刘芳 《教育技术导刊》2008,7(4):51-53

分析了人工势场模型存在的两个问题:目标不可到达问题和由于局部最优解的存在而产生的死锁问题。在人工势场路径规划的基础上,提出了基于免疫算法和人工势场法的最优路径规划方法。通过仿真算例验证了该模型的有效性。  相似文献   

文化翻译理论在儿童文学翻译中的应用     

程晓 《洛阳师范学院学报》2008,27(3):141-143

翻译就是原文本的重写,而重写意味着某种操控。对于翻译者来说翻译的过程就是将外文作品通过自己的分析解构,进行文化上的转移,然后在个人的理解和知识背景的支持下进行重构,形成受体语言的文本。而进行儿童文学翻译的成年翻译者因为成年人与儿童在心理、理解力、阅历、视角上面的差异,造成了普通文学翻译中不会出现的目标读者在翻译过程中缺席的现象。译者对作品的操控在儿童文学作品翻译的过程中会由于目标读者的特殊性使得重构时无法由重要的目标读者对即将形成的译文进行及时评估和修改。成年的译者无法代表目标读者对译文进行操控,其具体的结果就是使译文的可读性成为一个难于确定的问题。  相似文献