消除神经信号采样中噪声的数字滤波技术及其比较

针对多种噪声的干扰,采用自适应平滑技术、自适应滤波技术、普通数字滤波器和一种用于消除50Hz市电干扰的方法在Compaq 286e微机上对人体正中神经束内诱发的单一传入电位的波形特征进行处理,发现自适应滤波及快速算法可以很好地消除市电干扰,但电位波形发生严重畸变而自适应平滑的效果比较理想;后者适应范围较广,对降低神经电位的各种干扰有明显效果;快速算法可用于生物信号的实时处理.     

Enhancing subjective well‐being in individuals with asthma

Asthma, a chronic respiratory disease, is caused by a complex interaction between genetic and environmental variables. The intent of this article is to propose a theory that provides an explanation for the reduction of emotionally triggered asthma through treatments derived from positive psychology. The basic tenet of the theory is that physical health issues, such as asthma, can be promoted through systematic interventions that are designed to enhance the individual's sense of independence, intimacies or friendships, and/or feelings of competence. This theoretical approach is based largely on Bertrand Russell's definition of happiness and is consistent with positive psychology in that it focuses on variables that promote subjective well‐being, or a satisfying daily life. © 2004 Wiley Periodicals, Inc. Psychol Schs 41: 95–100, 2004.     

Auxetic polymers: a new range of materials

Materials with a negative Poisson's ratio (auxetic materials) have the fascinating property of becoming fatter when stretched. This article describes some of the consequences of this phenomenon and some of the routes for making polymers with this property. Potential applications for these materials are reviewed.     

The conflict detection and resolution in knowledge merging for image annotation

Semantic annotation of images is an important step to support semantic information extraction and retrieval. However, in a multi-annotator environment, various types of conflicts such as converting, merging, and inference conflicts could arise during the annotation. We devised conflict detection patterns based on different data, ontology at different inference levels and proposed the corresponding automatic conflict resolution strategies. We also constructed a simple annotator model to decide whether to trust a given piece of annotation from a given annotator. Finally, we conducted experiments to compare the performance of the automatic conflict resolution approaches during the annotation of images in the celebrity domain by 62 annotators. The experiments showed that the proposed method improved 3/4 annotation accuracy with respect to a naïve annotation system.     

Online activities of urban Malaysian adolescents: report of a pilot study

The literacy practices of many communities today show new ways of meaning making in the contemporary, technological and digital culture. A number of Malaysian adolescents belong to this culture. This pilot study reports the preliminary findings of a larger study aimed at describing the online activities of Malaysian adolescents. Fifty‐four participants from an urban secondary school in Penang took part in this study. One finding showed that the percentages of language use on the Internet were: 80.6 per cent in English, 10.6 per cent in Bahasa Malaysia and 8.8 per cent in Chinese. In addition, the study also revealed some common websites that these adolescents frequented. The findings point to the need to investigate the extent of these online literacy practices beyond school among the adolescent population in Malaysia and to look into the implications for ESL education.     

The Oprah Effect: Texts,Readers, and the Dialectic of Signification

The West treasures few moments in its history the way it treasures the story of the democratization of print. [Eighteenth century] men of letters commonly linked the spread of letters to the growth of knowledge [and to] the democratization of power … in their eyes, the citizen s reading took on a mythic significance it has never lost, even to the present. (Warner, 1993, p. 7)     

Predictors of Localism in Public Television Scheduling in the United States

In the United States, public television claims itself a champion of localism. A prime-time schedule analysis of the Public Broadcasting Service's (PBS) member stations establishes localism scores, and discriminant analysis finds variables that predict differences among stations. Market level variables (income, education, ethnic diversity, geographic component) and organizational level variables (Community Service Grants, membership funding, overall revenue) affect localization of member stations' schedules. This is the first empirical study utilizing a structural operationalization of localism, inclusive of all programming genres, applied to PBS member stations.     

Organizational learning and program renewal in teacher education: A socio-cultural theory of learning, innovation and change

Pressures for change in the field of teacher education are escalating significantly as part of systemic education reform initiatives in a broad spectrum of economically developed and developing nations. Considering these pressures, it is surprising that relatively little theoretical or empirical analysis of learning and change processes within teacher education programs has been undertaken. In this paper, we illustrate some ways in which contemporary socio-cultural learning theory may be used as a lens for addressing these issues. Using a theoretical framework developed by Harré [Harré, R. (1984). Personal being: A theory for individual psychology. Cambridge, MA: Harvard University Press], we show how processes of individual and collective learning led to changes in a teacher education program observed over an eighteen month period of time. Important innovations in program practice were generally found to have their sources in the creative work of individual faculty. However program level changes required negotiation of new ideas and practices within small groups of faculty, and with the larger collective of the program. We conclude that the Harré model, and the socio-cultural learning theories from which it is derived, may offer a useful theoretical framework for interpreting complex social processes underlying organizational renewal, innovation, and change.     

Erratum to: Management and academic practices to prevent higher education corruption — a case review of an international branch campus in Uzbekistan

Tertiary Education and Management - The following article is being retracted from publication in Tertiary Education and Management: ‘Management and academic practices to prevent higher...