The concepts of hypothesis testing, trade-offs between Type I and Type II error, and the use of power in choosing an appropriate sample size based on power when designing an experiment are routinely included in many i...
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The concepts of hypothesis testing, trade-offs between Type I and Type II error, and the use of power in choosing an appropriate sample size based on power when designing an experiment are routinely included in many introductory statistics courses. However, many students do not fully grasp the importance of these ideas and are unable to implement them in any meaningful way at the conclusion of the course. This paper presents a number of applets intended to help students understand the role of power in hypothesis testing and which allow them to obtain numerical values without having to perform any calculations for a variety of scenarios, complementing some of the applets presented inAberson, Berger, Healy, and Romero (2002). Ideas are given about how to incorporate the materials into an introductory course.
We have used the computer language java to develop a computer simulation program for heavy-ion elastic scattering based on the parameterized phase shift model. Using this program, we have carried out a chi(2)-fit to t...
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We have used the computer language java to develop a computer simulation program for heavy-ion elastic scattering based on the parameterized phase shift model. Using this program, we have carried out a chi(2)-fit to the observed differential cross-section data of the heavy-ion elastic scattering and performed computer simulations of the angular distribution, the deflection function, the reaction cross-section, the scattering matrix element, and the analysis results as graphical representations. The program is also applied to elastic scattering of the C-12+C-12 system at E-lab = 1016 MeV.
An Internet web page is described for organizing and analyzing information about lepidopteran sex pheromone components. Hypertext markup language(HTML) with javaScript program code is used to draw moth pheromone analo...
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An Internet web page is described for organizing and analyzing information about lepidopteran sex pheromone components. Hypertext markup language(HTML) with javaScript program code is used to draw moth pheromone analogs by combining GIF bitmap images for viewing by web browsers such as Netscape or Microsoft Internet Explorer. Straight-chain hydrocarbons of 5-22 carbons with epoxides or unsaturated positions of E or Z geometrical configuration with several alternative functional groups can be drawn by simply checking menu bars or checkboxes representing chain length, E/Z unsaturation points, epoxide position and chirality, and optional functional groups. The functional group can be an aldehyde, alcohol, or ester of formate, acetate, propionate, or butyrate. The program is capable of drawing several million structures and naming them [e.g., (E,E)-8,10-dodecadien-1-ol and abbreviated as E8E10-12:OH]. A java applet program run from the same page searches for the presently drawn structure in an internal database compiled from the Pherolist, and if the component is found, provides a textarea display of the families and species using the component. Links are automatically specified for drawn components if found in the Pherolist web site (maintained by H. Arn). Windowed links can also be made to two other javaScript programs that allow searches of a web site database with over 5900 research citations on lepidopteran semiochemicals and a calculator of vapor pressures of some moth sex pheromone analogs at a specified temperature. Various evolutionary and biosynthetic aspects are discussed in regard to the diversity of moth sex pheromone components.
As information techniques are improving they give a chance to developed new tools for teaching. Web-based education material has been developed in the Laboratory of Electrical Engineering and Health at the Tampere Uni...
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ISBN:
(纸本)0780375254
As information techniques are improving they give a chance to developed new tools for teaching. Web-based education material has been developed in the Laboratory of Electrical Engineering and Health at the Tampere University of Technology for a few years now. The aim of this paper is to present the course "Environmental Issues of Electric and Electronics Industry" and ideas for applying WWW in the teaching as well as a virtual laboratory exercise for the course. The course was carried out as a traditional and also as a virtual course on the Internet. The course consisted of lectures, calculation exercises, interactive exercises and supplementary study material in paper. The course was operated in a learning environment developed at the Laboratory of Electrical Engineering and Health.
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