A bundle of software rights and duties

Like the ownership of physical property, the issues computer software ownership raises can be understood as concerns over how various rights and duties over software are shared between owners and users. The powers of software owners are defined in software licenses, the legal agreements defining what users can and cannot do with a particular program. To help clarify how these licenses permit and restrict users’ actions, here I present a conceptual framework of software rights and duties that is inspired by the terms of various proprietary, open source, and free software licenses. To clarify the relationships defined by these rights and duties, this framework distinguishes between software creators (the original developer), custodians (those who can control its use), and users (those who utilise the software). I define the various rights and duties that can be shared between these parties and how these rights and duties relate to each other. I conclude with a brief example of how this framework can be used by defining the concepts of free software and copyleft in terms of rights and duties.     

Control vector optimization and genetic algorithms for mixed-integer dynamic optimization in the synthesis of rice drying processes

Rice drying synthesis is an essential operation that has to be done carefully and cost-effectively. Rice is harvested at high moisture content and hence must be dried within 24 h for safe storage. However, improper drying can cause fissuring in the rice grain, and thus greatly reduce its market value. Multi-pass drying systems are therefore used to gradually bring moisture content to desired level.The problem of rice synthesis, considered in this study, seeks the configuration of units and their corresponding operating conditions that maximize rice quality. This problem is formulated as a mixed-integer dynamic optimization problem. The integer part of the problem reflects process alternatives while the dynamic part originates from nonlinear differential-algebraic equations describing the drying behavior of a rice grain.Clearly such a formidable problem is not easy to solve. Hence, we propose an approach that makes use of two algorithms: a genetic algorithm to search for the best configuration of units and a control vector parameterization approach that optimizes the operating conditions for each configuration. We demonstrate the effectiveness of the approach on a case study.     

Salivary cortisol mediates effects of poverty and parenting on executive functions in early childhood

In a predominantly low-income population-based longitudinal sample of 1,292 children followed from birth, higher level of salivary cortisol assessed at ages 7, 15, and 24 months was uniquely associated with lower executive function ability and to a lesser extent IQ at age 3 years. Measures of positive and negative aspects of parenting and household risk were also uniquely related to both executive functions and IQ. The effect of positive parenting on executive functions was partially mediated through cortisol. Typical or resting level of cortisol was increased in African American relative to White participants. In combination with positive and negative parenting and household risk, cortisol mediated effects of income-to-need, maternal education, and African American ethnicity on child cognitive ability.     

Exploring dynamic assessment as a means of identifying children at risk of developing comprehension difficulties

In this study, the authors explore a newly constructed dynamic assessment (DA) intended to tap inference-making skills that they hypothesize will be predictive of future comprehension performance. The authors administered the test to 100 second-grade children using a dynamic format to consider the concurrent validity of the measure. The dynamic portion of the assessment comprised teaching children to be "reading detectives" by using textual clues to solve what was happening in the story. During the DA children listened to short passages and answered three inferential questions (i.e., one setting, two causal). If children were unable to answer a question, they were reminded what a reading detective would do and given a set of increasingly concrete prompts and clues to orient them to the relevant portion of text until they could answer the question correctly. Results showed that the DA correlated significantly with a standardized measure of reading comprehension and explained a small but significant amount of unique variance in reading comprehension above and beyond vocabulary and word identification skills. In addition, results suggest that DA may be better than the standardized measure of reading comprehension at identifying intraindividual differences in young children's reading abilities.     

基于论证型式应用的论证挖掘

本文旨在为构建一种以论证型式为基础的方法,用以帮助非形式逻辑的学生分析自然语言对话的文本,并识别出其中所出现的常见论证类型.他们在这一过程中时常会错误地辨识论证类型,而本文将表明所发展的这种方法对于学习非形式逻辑的学生们是非常有帮助的.另外,对于那些可用于构建一种有用的论证识别方法的理论资源,本文对其最新发展动态进行了考察,并且也概览了当前人工智能领域中所发展的自动论证挖掘工具.     

Narratives,Identity, and Transformation

In attempt to honor the legacy of Dudley Allen Sargent and address our current concerns in kinesiology in a transformative manner, this article examines both our collective and individual narratives with respect to kinesiology and examines how this relates to our identity. In the language of anthropologist Clifford Geertz, we need to examine the kind of stories we tell about ourselves and the kind of stories others tell about us. I contend that we need to not only share our own individual and collective narratives but also make space to listen to the narratives of others.     

Comparison of Students' Knowledge Structure Coherence and Understanding of Force in the Philippines,Turkey, China,Mexico, and the United States

This study investigates the ongoing debate in the conceptual change literature between unitary and elemental perspectives on students' knowledge structure coherence. More specifically, the current study explores two potential explanations for the conflicting results reported by Ioannides and Vosniadou (2002 Ioannides, C. and Vosniadou, S. 2002. The changing meanings of force. Cognitive Science Quarterly, 2(1): 5–62.  [Google Scholar])and diSessa, Gillespie, and Esterly (2004 diSessa, A. A, Gillespie, N. and Esterly, J. 2004. Coherence versus fragmentation in the development of the concept of force. Cognitive Science, 28: 843–900. [Crossref], [Web of Science ®] , [Google Scholar]) in terms of differences in coding schemes and differences in student populations. The current study addresses these questions by applying the coding schemes from both studies to interviews with 201 students drawn from the United States, the Philippines, Turkey, China, and Mexico. The analyses focus first on the coding schemes, suggesting that differences in coding schemes seem unlikely to account for the differences in the original studies. The analyses then focus on potential differences between student populations, suggesting that some differences exist in terms of consistency and meanings that might result from language, culture, or educational systems, but that these differences are too small to account for the radical differences in the findings of the original studies. Two additional explanations are then proposed and explored involving the instruments and the epistemological stances invoked for the students. Overall, the results align more closely with the findings of diSessa, Gillespie, and Esterly (2004 diSessa, A. A, Gillespie, N. and Esterly, J. 2004. Coherence versus fragmentation in the development of the concept of force. Cognitive Science, 28: 843–900. [Crossref], [Web of Science ®] , [Google Scholar]). [Supplemental materials are available for this article. Go to the publisher's online edition of Journal of the Learning Sciences for the following free supplement: Coding Schemes and Rules.]     

LEVERAGING RESOURCES THROUGH STRATEGIC ALLIANCES FOR WORKFORCE DEVELOPMENT

The Michigan Technical Education Center (M-TEC) at Bay de Noc Community College is leading the way in workforce development for Michigan's Upper Peninsula. By leveraging resources through strategic alliances with industry, government, labor, and education, the M-TEC has become a powerful tool for training solutions. A March 1998 State of Michigan initiative sought applications from community colleges interested in a no more business as usual approach to technical skills training. The Michigan Economic Development Corporation (MEDC) awarded the M-TEC construction grant to Bay College in January 1999; groundbreaking took place in May 1999 and the center was dedicated in March 2000. The M-TEC concept - anytime, anywhere, customized training - proved itself through dramatic first-year increases in the number of workers trained (89%), total training hours (90% ), and MEDC training grant funds (500%). This has been accomplished in part through the impressive variety of resources the M-TEC leveraged from its strategic alliances. The M-TEC's sustaining partners, a group that has doubled in size after 1 year of operation (i.e., from 9 to 18), have increased the capacity of the center, even as they have contributed to its operation's budget. Equipment the center could not afford is now in use because the supplier wants its local customers to have access to it - and because the center could provide the training laboratories to house it. Dedicated computer laboratories make workforce training simple, with resources always available when needed by business and industry. The M-TEC is generating multiple revenue streams through nontraditional means to meet the state s 5-year mandate of self-sufficiency.     

A Structural Equation Modeling Approach for the Analysis of Cortisol Data Collected Using Pre–Post–Post Designs

Abstract

This study introduces a novel application of structural equation modeling (SEM) for the analysis of cortisol data that are collected using a pre–post–post design. By way of an extended example, an SEM model is developed that permits an examination of both the overall level of cortisol, as well as changes in cortisol (reactivity and regulation), as predictors of cognitive (executive) and behavioral functioning in 3- to 5-year-old children (N = 171) attending Head Start. The SEM model makes use of the parameterization of latent curve models. Throughout the extended example, the strengths of using an SEM approach for the analysis of cortisol data that are collected using pre–post–post designs is highlighted.     

Turning Social Capital Into Social Performance: Three Case Studies and a New Framework for Value Creation

Sociologists, political scientists, and economists have described different dimensions and functions of social capital from their disciplinary perspectives, emphasizing the value and impact of social relationships, governance institutions, or efficient and reliable economic transactions, respectively. In this article, we propose to integrate all three perspectives and the research accumulated in those fields in a common, practical framework for effectively using social capital assets in producing value‐adding social and organizational performance.