Analysis of robust design experiments with time-dependent ordinal response characteristics: a quality improvement study from the horticulture industry

An approach to the analysis of time-dependent ordinal quality score data from robust design experiments is developed and applied to an experiment from commercial horticultural research, using concepts of product robustness and longevity that are familiar to analysts in engineering research. A two-stage analysis is used to develop models describing the effects of a number of experimental treatments on the rate of post-sales product quality decline. The first stage uses a polynomial function on a transformed scale to approximate the quality decline for an individual experimental unit using derived coefficients and the second stage uses a joint mean and dispersion model to investigate the effects of the experimental treatments on these derived coefficients. The approach, developed specifically for an application in horticulture, is exemplified with data from a trial testing ornamental plants that are subjected to a range of treatments during production and home-life. The results of the analysis show how a number of control and noise factors affect the rate of post-production quality decline. Although the model is used to analyse quality data from a trial on ornamental plants, the approach developed is expected to be more generally applicable to a wide range of other complex production systems.     

Learning How and Learning What: Effects of Tacit and Codified Knowledge on Performance Improvement Following Technology Adoption

This paper examines effects of tacit and codified knowledge on performance improvement as organizations gain experience with a new technology. We draw from knowledge management and learning curve research to predict improvement rate heterogeneity across organizations. We first note that the same technology can present opportunities for improvement along more than one dimension, such as efficiency and breadth of use. We compare improvement for two dimensions: one in which the acquisition of codified knowledge leads to improvement and another in which improvement requires tacit knowledge. We hypothesize that improvement rates across organizations will be more heterogeneous for dimensions of performance that rely on tacit knowledge than for those that rely on codified knowledge (H1), and that group membership stability predicts improvement rates for dimensions relying on tacit knowledge (H2). We further hypothesize that when performance relies on codified knowledge, later adopters should improve more quickly than earlier adopters (H3). All three hypotheses are supported in a study of 15 hospitals learning to use a new surgical technology. Implications for theory and practice are discussed.     

The effects of financial management strategies on quality of family life in remarriage

A conceptualization of financial management behavior in remarriage forwarded by Fishman (1983) is refined and used to study 91 remarried couples. Couples are categorized into three financial management strategy groups: those having only joint accounts, only separate accounts, and a combination of joint and separate accounts. The different groups' demographic characteristics and satisfaction and happiness regarding family life are compared. Overall few differences between groups are found on the demographic characteristics, and no differences are found on satisfaction or happiness. Her research interests are in remarriage and stepfamily relationships, fathering postdivorce, and stress and coping in adolescents. She received her Ed.D. from Indiana University. He received his M.S. degree in Human Development and Family Studies at Colorado State University, Ft. Collins, CO 80523. His research interests include factors affecting adjustment in remarriage and multiple remarriages and problem solving and creativity in families. before her death in December 1993. Her research interests were financial management and families in transition. She received her Ph.D. from the University of Tennessee at Knoxville.     

语言的历史作用——中国南部和越南北部台语民族语言文化史考察

围绕语言作用这个话题,根据语言基因材料追溯中国北部、南部人口及中越边境地区人口的生物起源历史,并通过分析百越的族群、语言和风俗习惯,揭示台语民族的种族、语言起源历史。文章还介绍了百越后裔的语言生态发展状况。     

Working in caseload midwifery care: The experience of midwives working in a birth centre in North Queensland

BackgroundPregnancy, birth and child rearing are significant life events for women and their families. The demand for services that are family friendly, women focused, safe and accessible is increasing. These demands and rights of women have led to increased government and consumer interest in continuity of care and the establishment in Australia of birth centres, and the introduction of caseload midwifery models of care.AimThe aim of this research project was to uncover how birth centre midwives working within a caseload model care constructed their midwifery role in order to maintain a positive work–life balance.MethodsA Grounded Theory study using semi-structured individual interviews was undertaken with seven midwives who work at a regional hospital birth centre to ascertain their views as to how they construct their midwifery role while working in a caseload model of care.FindingsThe results showed that caseload midwifery care enabled the midwives to practice autonomously within hospital policies and guidelines for birth centre midwifery practice and that they did not feel too restricted in regards to the eligibility of women who could give birth at the centre. Work relationships were found to be a key component in being able to construct their birth centre midwifery role. The midwives valued the flexibility that came with working in supportive partnerships with many feeling this enabled them to achieve a good work–life balance.ConclusionThe research contributes to the current body of knowledge surrounding working in a caseload model of care as it shows how the birth centre midwives construct their midwifery role. It provides information for development and improvement of these models of care to ensure that sustainability and quality of care is provided to women and their families.     

A generalized estimating equation method for fitting autocorrelated ordinal score data with an application in horticultural research

Summary.  Generalized estimating equations for correlated repeated ordinal score data are developed assuming a proportional odds model and a working correlation structure based on a first-order autoregressive process. Repeated ordinal scores on the same experimental units, not necessarily with equally spaced time intervals, are assumed and a new algorithm for the joint estimation of the model regression parameters and the correlation coefficient is developed. Approximate standard errors for the estimated correlation coefficient are developed and a simulation study is used to compare the new methodology with existing methodology. The work was part of a project on post-harvest quality of pot-plants and the generalized estimating equation model is used to analyse data on poinsettia and begonia pot-plant quality deterioration over time. The relationship between the key attributes of plant quality and the quality and longevity of ornamental pot-plants during shelf and after-sales life is explored.     

Situated Knowledge and Learning in Dispersed Teams

This qualitative field study explores how geographically dispersed teams learn and accomplish challenging work by drawing on knowledge situated in the multiple physical locales they span. We propose the construct of situated knowledge as important for understanding the learning process in dispersed teams. Data collected on seven development projects, each spanning multiple sites, reveal that situated knowledge is at the same time a valuable resource and a source of communication difficulty for dispersed teams. We find that, because their members understand and participate in locale–specific practices, dispersed teams can easily access and use unique locale–specific knowledge resources to resolve problems that arise in those same locales. However, when dispersed teams need knowledge situated at a site other than where the problem occurred, they must first recognize and adjust for locale–specific practices within which that knowledge is embedded before they can use it. The paper reports on analyses of 44 learning episodes that involved identifying and engaging situated knowledge, and draws from these data to identify implications for research and practice.     

探足于"后现代"、"后美国"与"复古求变"的交叉河流——论国际传播理论的亚洲中心学派

本文建立在作者最近所编译的<传播理论的亚洲视维>一书所涉及的研究范围和基础之上.文中尝试以"后现代"、"后美国"与"复古求变"的交叉视角,对目前已经在国际上出现、并在逐渐发展扩大的传播理论的亚洲中心学派进行引介.作者除论析该学派的学术背景宗旨,及其对既有传播理论欧/美中心的批判性反思、受现当代新儒家思想润泽等之外,也展示了该学派在充分意识到亚洲复杂性基础上所开展的、对传播理论亚洲共同性的探求.最后,全文以简要述论该学派主要学者们提出的建构性的亚洲中心传播命题和模式及学派的发展前景作结.     

6 Three Perspectives on Team Learning

Abstract

The emergence of a research literature on team learning has been driven by at least two factors. First, longstanding interest in what makes organizational work teams effective leads naturally to questions about how members of newly formed teams learn to work together and how existing teams improve or adapt. Second, some have argued that teams play a crucial role in organizational learning. These interests have produced a growing and heterogeneous literature. Empirical studies of learning by small groups or teams present a variety of terms, concepts, and methods. This heterogeneity is both generative and occasionally confusing. We identify three distinct areas of research that provide insight into how teams learn to stimulate cross-area discussion and future research. We find that scholars have made progress in understanding how teams in general learn, and propose that future work should develop more precise and context-specific theories to help guide research and practice in disparate task and industry domains.     

The facts of death

This tour of the average American's death says a lot about modern life. When and where we die is largely up to medicine. But trends in how we die and honor our dead depend more on social change, aging, and demographic diversity.