Adhesive Hard-Sphere Colloidal Dispersions. A Small-Angle Neutron-Scattering Study of Stickiness and the Structure Factor

Small-angle neutron-scattering structure factor measurements were made on sterically stabilized silica spheres dispersed in benzene up to volume fractions of 0.30. Benzene is only a marginal solvent for the stabilizing layer on the surface of the particles. The particles are made attractive by lowering temperature. This attraction is modeled by a square well potential, the depth of which varies with temperature. At the highest temperature studied, our experimental system behaved effectively as an assembly of hard spheres, whereas at the lowest temperature the system approaches a spinodal. Using Baxter's theory we were able to evaluate the interaction parameters and to calculate the structure factor. Experimental structure factors were satisfactorily reproduced over the entire temperature range studied

Discussion

In this contribution aspects of inter-sample input signal behavior are examined. The starting point is that parametric identication always is performed on basis of discrete-time data. This is valid for identication of discrete-time models as well as continuous-time models. The usual assumptions on the input signal are; i) it is band-limited, ii) it is piecewise constant or iii) it is piecewise linear. One point made in this paper is that if a discrete-time model is used, the best possible (in the model structure) adjustment to data is made. This is independent of the assumption on the input signal. However, a transformation of the obtained discrete model to a continuous one is not possible without additional assumptions on the input signal. The other point made is that the frequency functions of the discrete models very well coincides with the frequency functions of the discretized continuous time models and the continuous time transfer function fitted in the frequency domain

Variable finals in proto-Sino-Tibetan

This paper concentrates on variable finals, and argues that just as we find a certain amount of both rule-governed and non-rule governed variation in modern languages, in reconstructing Proto-Sino-Tibetan we should recognize the possibility of these types of variation

(Mis)communication in couples : positioning as a site of conflict : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Psychology at Massey University

Appendix B & C missing from original copyMis)communication between people in couple relationships often results in arguments. Psychological research on this phenomenon has often relied on essentialist accounts of gender, offering little room for social or personal change. This study has used feminist poststructuralist theory to investigate the discourses that constitute couple relationships and enable (mis)communications in the form of arguments. From my reading of this theory and my experience of couple relationships I formulated three research questions: What discourses may be identified in young adults' talk about their couple relationships? How do these discourses specify the various obligations and entitlements of Boyfriends and Girlfriends? How are young adults' positions within these discourses implicated in their accounts of arguments? The transcripts of semi-structured interviews with young adults talking about their couple relationships provided the texts for analysis. I conducted interviews with six men and six women aged between 22 and 30. Four themes emerged from participants' talk: division of labour, relationship work, spending time, and arguments. I used analytic resources from Parker's (1992) and Baxter's (2003) interpretations of poststructuralist discourse analysis to identify five discourses that constitute these thematics. I have named these discourses egalitarian, traditional, togetherness, reciprocity, and men-need-space. Analyses address the ways in which these discourses position boyfriends and girlfriends. The implications of contradictory positioning for enabling arguments are discussed

Spartan Daily, October 12, 1978

Volume 71, Issue 28https://scholarworks.sjsu.edu/spartandaily/6387/thumbnail.jp

Second Generation Law and Economics of Conflict of Laws: Baxter\u27s Comparative Impairment and Beyond

In his 1963 article in the Stanford Law Review, Choice of Law and the Federal System, Professor William F. Baxter criticized the choice-of-law approach of the First Restatement of the Conflict of Laws. According to the Restatement, courts should apply the law of the state where the last act or event deemed necessary to create a cause of action occurred. In contrast, Baxter advocated a comparative-impairment approach, whereby judges were obligated to apply the law of the state whose public policy would suffer the greatest impairment if its law was not applied. The authors contend that although Baxter\u27s approach caries intuitive appeal for one interested in economic theory, available empirical evidence and public choice insights together indicate that Baxter\u27s approach cannot work efficiently in practice. Because judges in practice have neither the data nor the intuitive understanding of the complexities of any legal problem to make the comparative-impairment determination in the scrupulous way that Baxter suggested, William H. Allen and Professor Erin A. O\u27Hara recommend a modified Restatement approach. They believe an approach that keeps the basic concepts of the Restatement but modifies rules that have not worked well in practice will generate greater predictability and less bias in decisionmakin

A comparative analysis of web-based GIS applications using usability metrics

With the rapid expansion of the internet, Web-based Geographic Information System (WGIS) applications have gained popularity, despite the interface of the WGIS application being difficult to learn and understand because special functions are needed to manipulate the maps. Hence, it is essential to evaluate the usability of WGIS applications. Usability is an important factor in ensuring the development of quality, usable software products. On the other hand, there are a number of standards and models in the literature, each of which describes usability in terms of various set of attributes. These models are vague and difficult to understand. Therefore, the primary purpose of this study is to compare five common usability models (Shackel, Nielsen, ISO 9241 P-11, ISO 9126-1 and QUIM) to identify usability metrics that have most frequently used in the previous models. The questionnaire method and the automated usability evaluation method by using Loop11 tool were used, in order to evaluate the usability metrics for three case studies of commonly used WGIS applications as Google maps, Yahoo maps, and MapQuest. Finally, those case studies were compared and analysed based on usability metrics that have been identified. Based on a comparative study, four usability metrics (Effectiveness, Efficiency, Satisfaction and Learnability) were identified. Those usability metrics were characterized by consistent, comprehensive, not vaguely and proper to evaluate the usability of WGIS applications. In addition, there was a positive correlation between these usability metrics. The comparative analysis indicates that Effectiveness, Satisfaction and Learnability were higher, and the Efficiency was lesser by using the Loop11 tool compared to questionnaire method for the three case studies. In addition, Yahoo Maps and MapQuest have usability metrics rate lesser than Google Maps by applying two methods. Therefore, Google Maps is more usable compared to Yahoo Maps and MapQuest