XP customer practices: A grounded theory

The Customer is a critical role in XP, but almost all XP practices are presented for developers by developers. While XP calls for Real Customer Involvement, it does not explain what XP Customers should do, nor how they should do it. Using Grounded Theory, we discovered eight customer practices used by successful XP teams: Customer Boot Camp, Customer’s Apprentice, Customer Pairing, and Programmer’s Holiday support the well-being and effectiveness of customers; Programmer On-site and Road shows support team and organization interactions; and Big Picture Up Front and Re-calibration support Customers steering the whole project. By adopting these processes, XP Customers and teams can work faster and more sustainably

The XP customer team: A grounded theory

The initial definition of XP resulted in many people interpreting the on-site customer to be a single person. We have conducted extensive qualitative research studying XP teams, and one of our research questions was “who is the customer”? We found that, rather than a single person, a customer team always exists. In this paper we outline the different roles that were typically on the team, which range from the recognized “Acceptance Tester” role to the less recognized roles of “Political Advisor” and “Super-Secretary”

Determinants of Mammography Usage across Rural and Urban Regions of Canada

Breast cancer is a leading source of mortality among Canadian women; however early detection via mammography considerably improves survival rates. Accordingly, national guidelines advocate biennial screening for asymptomatic women aged 50 to 69 years. Unfortunately many women do not abide by such recommendations, and there is some evidence that compliance rates are lower in rural areas. This report explores the extent of regional variation within and between Canadian provinces using a new and more detailed set of rural indicators based on economic zones of influence. We find the incidence of ever having a mammogram and screening within the last two years are significantly lower for women most removed from large urban centers. This result is obtained after controlling for demographic and socio-economic characteristics, concentration of physicians and specialists in the local area and whether the woman has a regular family doctor. An important reason for the observed differences across rural and urban areas is found to be awareness of the need for regular screening. We also observe that differences in mammography usage between rural and urban areas vary significantly across Canadian provinces.mammography, cancer screening, rural health, women's health

Emergency department use among Asian adults living in the United States: Results from the National Health Interview Survey (2006 – 2013)

This paper presents secondary analyses of the National Health Interview Survey data focused on emergency department (ED) utilization among Asian adults residing in the United States. National Health Interview Survey data provided from survey years 2006-2013 was pooled and disaggregated by single-race Asian ethnic subgroups (Filipino, Chinese, Asian Indian, other Asian). We explored trends in reports of an ED visit over the survey years for the purpose of determining whether reports of an ED visit increased or decreased over survey years. We also explored background/biologic, environment, access to care, and behavior factors and their associations with having an ED visit. The majority of respondents were foreign-born (75.9%) and had lived in the United States for ten or more years (54.3%). Estimates for reports of any ED visits ranged from 8.3% for the Chinese to 15.3% for the Filipino subgroups. Filipinos were more likely to have an ED visit compared to the Chinese and other Asians (except Asian Indians). For the eight years of survey data, estimates indicate a trend of fewer reports of any ED visit among the Asian Indian and Filipino subgroups. Among Filipinos, having diabetes and a smoking history were associated with an ED visit. The odds of an ED visit were higher among Asians in the youngest age category, among other Asians born in the United States, and among those who saw/talked to a mental health professional within the previous year. As there is a paucity of information available about ED use among Asians or Asian subgroups, this report adds to the literature on patterns of health care utilization among Asian subgroups living in the United States with a specific focus on ED utilization

Movement to Enhance Learning and On-Task Behavior in Early Childhood Classrooms

The purpose of this literature review was to examine the impact of movement on learning and behavior. The literature provides numerous studies that reveal effects of movement on student achievement and on-task behavior of young children. As educators strive to keep students engaged and on-task, research shows that movement opportunities are a strategy to be utilized. Physical activity can benefit self-regulation and academic performance. Strategies for using movement in the classroom are given to support teachers

Tungsten and barium transport in the internal plasma of hollow cathodes

The effect of tungsten erosion, transport, and redeposition on the operation of dispenser hollow cathodes was investigated in detailed examinations of the discharge cathode inserts from 8200 h and 30 352 h ion engine wear tests. Erosion and subsequent redeposition of tungsten in the electron emission zone at the downstream end of the insert reduce the porosity of the tungsten matrix, preventing the flow of barium from the interior. This inhibits the interfacial reactions of the barium-calcium-aluminate impregnant with the tungsten in the pores. A numerical model of barium transport in the internal xenon discharge plasma shows that the barium required to reduce the work function in the emission zone can be supplied from upstream through the gas phase. Barium that flows out of the pores of the tungsten insert is rapidly ionized in the xenon discharge and pushed back to the emitter surface by the electric field and drag from the xenon ion flow. This barium ion flux is sufficient to maintain a barium surface coverage at the downstream end greater than 0.6, even if local barium production at that point is inhibited by tungsten deposits. The model also shows that the neutral barium pressure exceeds the equilibrium vapor pressure of the impregnant decomposition reaction over much of the insert length, so the reactions are suppressed. Only a small region upstream of the zone blocked by tungsten deposits is active and supplies the required barium. These results indicate that hollow cathode failure models based on barium depletion rates in vacuum dispenser cathodes are very conservative

Self-Leadership and Self-Regulated Learning: An Investigation of Theoretical Relationships

The purpose of this study was to investigate the relationships between the behavior, motivation, and cognitive dimensions of self-leadership and self-regulated learning. This quantitative study used the Revised Self-Leadership Questionnaire measuring self-leadership, and the Learning and Study Strategies Inventory, Second Edition measuring self-regulated learning, to collect data. The sample was drawn from the undergraduate college student population of one small private university. The Pearson product moment correlation results indicated several weak-to-moderate relationships between self-leadership and self-regulated learning behavior, motivation, and cognitive strategy dimensions. This was a first attempt to compare the two self-regulation theories; the results indicate that SL and SRL are related. Future research should further investigate the relationships for possible cross application of the theories. Specifically, recommended research includes exploring SL as a method to teach SRL and SRL as an approach to promote professional and organizational learning