A Story‐based Simulation for Teaching Sampling Distributions

Statistical inference relies heavily on the concept of sampling distributions. However, sampling distributions are difficult to teach. We present a series of short animations that are story‐based, with associated assessments. We hope that our contribution can be useful as a tool to teach sampling distributions in the introductory statistics classroom.     

Serum calcium measurement: Total versus free (ionized) calcium

Measurement of serum free (ionized) calcium (Ca⁺⁺) reflects true calcium status of the body in health and disease. Present study evaluates efficacy of Ca⁺⁺ over total calcium (CaT) in serum for calcium status. 52 subjects were enrolled for study. Anaerobic fasting blood sample for Ca⁺⁺ measurement and autoclaved plain bulb for estimation of CaT, Total protein (TP) and Albumin was used. CaT, Corrected CaT, Ca⁺⁺, Calculated Ca⁺⁺ were measured and correlated. Corrected CaT and calculated Ca⁺⁺ were derived from the measured parameters. Study group showed significant difference between CaT and corrected CaT (p<0.006), Ca⁺⁺ and calculated Ca⁺⁺ (p<0.001). Negligible correlation was observed between Ca⁺⁺ and serum protein. Positive correlation was observed between CaT and calculated Ca⁺⁺, TP and albumin. Findings indicate that Ca⁺⁺ levels are independent of serum protein status. With scrupulous sampling, Ca⁺⁺ may be a better parameter than presently used CaT for assessing calcium status in serum.     

VC++6.0环境下脉冲捕捉的实现

本文论述了信号采集中捕捉脉冲的算法,该算法具有一定的防误捕捉功能,文章给出了相应的VC 6.0程序以及程序在实际应用时的效果。该算法对捕捉具有其他特点的信号有一定的参考价值。     

基于Blog的教育叙事促进教师专业发展的案例研究

本文以【苏州教育博客】学习-发展共同体为案例,以其280篇精华日志作为研究对象,通过抽样整理和分析,论证它们促进了教师专业发展结构中哪些方面的发展,最终得出结论:基于Blog的教育叙事可促进教师专业发展结构各个方面得到不同程度的发展。     

Medical Library Employer Expectations

No abstract available for this article.     

Convincing Family Caregivers to Participate in Research: “Does that Count as Caregiving?”

This essay details lessons learned in the completion of a dissertation on family caregivers. The four central lessons address challenges with scheduling for caregivers, caregiver understanding of their own activities, the culturally situated nature of caregiving, and the importance of advocating for one's research. Each lesson includes context for how the lesson emerged from a significant problem in applied research and tactics for improvement in similar or related work.     

Robust design and optimization for autonomous PV-wind hybrid power systems

This study presents a robust design method for autonomous photovoltaic （PV）-wind hybrid power systems to obtain an optimum system configuration insensitive to design variable variations. This issue has been formulated as a constraint multi-objective optimization problem, which is solved by a multi-objective genetic algorithm, NSGA-II. Monte Carlo Simulation （MCS） method, combined with Latin Hypercube Sampling （LHS）, is applied to evaluate the stochastic system performance. The potential of the proposed method has been demonstrated by a conceptual system design. A comparative study between the proposed robust method and the deterministic method presented in literature has been conducted, The results indicate that the proposed method can find a large mount of Pareto optimal system configurations with better compromising performance than the deterministic method. The trade-off information may be derived by a systematical comparison of these configurations, The proposed robust design method should be useful for hybrid power systems that require both optimality and robustness.     

A Walker Runs Through the Syllabus

A bag of 24 packets of a well‐known brand of crisps provides a handy visual (and edible) aid to looking at the syllabus of a basic course in statistics.     

Discussion and Perception of Information in Groups and Judge-Advisor Systems

Participants were given information about three different vacation destinations to read before discussing them in a group. Some information was given to all three group members before the discussion (shared) and some information was only given to one participant (unshared). Participants were randomly assigned to discuss the issue in either unstructured groups or Judge-Advisor Systems (JASs). A JAS is a group in which one member has the role of decisionmaker and the other two members act as advisors to the decisionmaker. Participants in JASs discussed more information and repeated a higher percentage of both their own unshared information and others’ unshared information than participants in unstructured groups. The hypothesis that others’ unshared information would be rated as more important and valid in JASs than groups was not supported.