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The primary purpose of the current research was to identify core contextual factors that facilitate or hinder the process of organizational knowledge creation practices. The grounded theory framework and negotiated coding approach were employed. Serving as the fundamental research framework was Nonaka and his colleagues' knowledge creation and conversion theory, along with their proposed knowledge creation enablers. A total of 314 codeable units from 153 individuals were used for data analysis. All answers were coded and categorized into three emerged domains—organization, team/subgroup, and individual—for both areas of facilitating and hindering factors. Limitations and implications for further research are presented in the discussion section. 相似文献
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Liang Xiong Lyu Fen Li Kang Wu Pan Deng Seung Hee Jeong Zhigang Wu Han Ding 《国家科学评论(英文版)》2019,6(5):970
Soft robotics with new designs, fabrication technologies and control strategies inspired by nature have been totally changing our view on robotics. To fully exploit their potential in practical applications, untethered designs are preferred in implementation. However, hindered by the limited thermal/mechanical performance of soft materials, it has been always challenging for researchers to implement untethered solutions, which generally involve rigid forms of high energy-density power sources or high energy-density processes. A number of insects in nature, such as rove beetles, can gain a burst of kinetic energy from the induced surface-energy gradient on water to return to their familiar habitats, which is generally known as Marangoni propulsion. Inspired by such a behavior, we report the agile untethered mobility of a fully soft robot in liquid based on induced energy gradients and also develop corresponding fabrication and maneuvering strategies. The robot can reach a speed of 5.5 body lengths per second, which is 7-fold more than the best reported, 0.69 (body length per second), in the previous work on untethered soft robots in liquid by far. Further controlling the robots, we demonstrate a soft-robot swarm that can approach a target simultaneously to assure a hit with high accuracy. Without employing any high energy-density power sources or processes, our robot exhibits many attractive merits, such as quietness, no mechanical wear, no thermal fatigue, invisibility and ease of robot fabrication, which may potentially impact many fields in the future. 相似文献
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Lin Tzu-Jung Nagpal Manisha VanDerHeide Jennifer Ha Seung Yon Newell George 《Reading and writing》2020,33(10):2549-2575
Reading and Writing - Argumentative writing has long been considered an essential skill for disciplinary learning. For researchers and curriculum developers to develop ecologically valid... 相似文献
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Research Findings: This qualitative study explored the process through which a small group of preservice early childhood teachers engaged in primary caregiving as a framework for learning about early care and education with infants during an infant practicum course at a university-affiliated early childhood center in the United States. Based on multiple data sources, findings revealed that the participants found the primary care system to be beneficial to both infants and teachers. The student teachers gained a better understanding of the uniqueness of the infancy period, experienced the emotional rewards of a special relationship with an infant, and learned to provide individualized and relationship-based infant care and education, while the infants received the benefits of this care. The integration of hands-on practice enacting a primary care system in a responsive infant room, ongoing supervision, and a theory-to-practice seminar created an effective professional learning process for the student teachers, which helped them to grow as both infant teachers and early childhood professionals. Practice or Policy: These findings are a 1st step toward looking more deeply at 1 strategy as a promising practice for the future, offering implications for early childhood teacher education and new insight to the field. 相似文献
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Shelley A. Gable Seung Youn Chyung Anthony Marker Donald Winiecki 《Performance Improvement》2010,49(4):17-25
This evaluation study explores how a nonprofit health insurance provider responds to the results of its annual employee engagement survey. The study answers two questions: (a) What do organizational leaders do with the data collected? and (b) How do leaders perceive the usefulness of the survey? It provides study results, discussions, and recommendations relevant to human performance technology practitioners, to help maximize the value of an organizational survey by increasing its usefulness as a catalyst for change. 相似文献
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The goal of the current study was to introduce a new stopping rule for computerized adaptive testing. The predicted standard error reduction stopping rule (PSER) uses the predictive posterior variance to determine the reduction in standard error that would result from the administration of additional items. The performance of the PSER was compared to that of the minimum standard error stopping rule and a modified version of the minimum information stopping rule in a series of simulated adaptive tests, drawn from a number of item pools. Results indicate that the PSER makes efficient use of CAT item pools, administering fewer items when predictive gains in information are small and increasing measurement precision when information is abundant. 相似文献
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As America’s older population continues to grow, more individuals are experiencing cognitive decline in the United States. At the same time, we live in an age where technology has increasingly become an integral part of our daily lives. Although numerous studies have examined cognitive functions of older adults from a diverse range of perspectives, research on the relationship between the technology adoption and adult cognitive capacity has been limited. Using nationally representative data (n = 5,259) from the Health and Retirement Study (HRS), this study analyzed the effect of computer usage on the cognitive capabilities of individuals aged 50 and older in the United States. Findings show that computer use in older adults declines with age but rises for those with higher levels of education. Results also indicate that an increased use of computers is significantly associated with improved cognitive capability, when controlling for age, gender, and years of education. Further research is needed to better understand the patterns of technology adoption among older adults and assess its effects on their cognitive abilities. 相似文献
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One of the methods of controlling test security in adaptive testing is imposing random item-ineligibility constraints on the selection of the items with probabilities automatically updated to maintain a predetermined upper bound on the exposure rates. Three major improvements of the method are presented. First, a few modifications to improve the initialization of the method and accelerate the impact of its feedback mechanism on the observed item-exposure rates are introduced. Second, the case of conditional item-exposure control given the uncertainty of examinee's ability parameter is addressed. Third, although rare for a well-designed item pool, when applied in combination with the shadow-test approach to adaptive testing the method may meet occasional infeasibility of the shadow-test model. A big M method is proposed that resolves the issue. The practical advantages of the improvements are illustrated using simulated adaptive testing from a real-world item pool under a variety of conditions. 相似文献