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The quality of experiences in childcare has significant, lasting impact on children&s social development. With the growing number of young children being served in family childcare settings, it is imperative that the care provides a quality environment that nurtures children&s social development. Empirically supported interventions that specifically target family childcare, however, are lacking. The development and evaluation of a video-based program aimed at training family childcare providers in setting up their childcare environment to promote social development in young children is described. Forty-two family childcare providers were randomly assigned to an intervention group and a wait-list control group. A majority of the participants felt they learned some to very much new, practical information and said they found the interactive discussions particularly helpful. This study illustrates the feasibility of doing training and evaluation research in family childcare settings. 相似文献
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Charter schools that target underserved communities, including Latinxs, have proliferated in the U.S., claiming a unique, more autonomous and successful alternative to traditional public schools, often with a promise of increased postsecondary access and preparation. However, there is conflicting evidence regarding their effectiveness on academic outcomes, prompting additional research on charter schools. This study examined the college access and preparation experiences of 14 Latinxs attending college preparatory charter schools within one school system in Texas. Findings highlight how schools assisted students in preparing for college, but challenges in accessing college knowledge and assistance still existed, particularly for undocumented students. 相似文献
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道德规范与图书馆事业 总被引：1，自引：0，他引：1
美国图书馆协会的《职业道德规范声明》提出了以图书馆事业为中心的具体原则,其《图书馆权利法案》则明确了图书馆的责任和义务。目前,美国社会和政治环境的变化为图书馆职业带来了越来越多的忧虑和压力。"9·11"后出台的《爱国者法案》明显与图书馆职业道德规范中所阐述的重要原则相冲突。因此,美国图书馆协会决心抵制《爱国者法案》对知识、信息自由开放以及行使个人隐私权的限制。 相似文献
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Allan B. de Guzman Katrina N. Maravilla Veniza Anne M. Maravilla Jomille D.V. Marfil Janine Angelica R. Mariñas Jorelle Michael B. Marquez 《Educational gerontology》2013,39(8):563-575
Numerous studies have been conducted worldwide about loneliness in older adults living in nursing homes and the factors associated with it. However, only a few studies have focused on social factors that may predispose these older adults to experience loneliness. The purpose of this study was to examine the interplay between and among loneliness, social isolation, social engagement, and life satisfaction among Filipino elderly (n = 180) recruited from government and nongovernment nursing homes in the Philippines. A multiaspect questionnaire, which included the UCLA Loneliness Scale, Revised Index for Social Engagement, Friendship Scale, and Life Satisfaction for the Third Age-Short Form was used to gather the needed data and information. Results of single and multiple regression analyses indicate an effect of the three factors (social isolation, social engagement, and life satisfaction) on loneliness with social isolation having the greatest impact on loneliness. Notably, increased social isolation, inadequate social engagement and decreased life satisfaction consequently aggravate loneliness. Social engagement produced a positive effect to both social isolation and life satisfaction in a way that a decrease in social engagement will decrease life satisfaction and increase social isolation. On the whole, loneliness in geriatric nursing homes is evident, and it is shaped by social isolation, social engagement and life satisfaction. Impliedly, interventions and measures to minimize loneliness are necessary, and further research is needed to explore other variables contributing to loneliness in geriatric nursing homes. 相似文献
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In this paper, a new approach to robust H∞ filtering for a class of nonlinear systems with time-varying uncertainties is proposed in the LMI framework based on a general dynamical observer structure. The nonlinearities under consideration are assumed to satisfy local Lipschitz conditions and appear in both state and measured output equations. The admissible Lipschitz constants of the nonlinear functions are maximized through LMI optimization. The resulting H∞ observer guarantees asymptotic stability of the estimation error dynamics with prespecified disturbance attenuation level and is robust against time-varying parametric uncertainties as well as Lipschitz nonlinear additive uncertainty. 相似文献
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We utilized a microfluidic device with hydrodynamic flow focusing geometry to produce uniform agarose droplets in the range of 50 to 110 μm. The transport property of the thermally gelled particles was tailored by layer-by-layer (LBL) polyelectrolytes coating on the surface and was measured via the release rates of Rhodamine B. The mechanical strength of the capsules was further enhanced by a coating of silica nano-particles in addition to polyelectrolyte coatings. We demonstrated that yeast cells can be successfully encapsulated into agarose capsules. 相似文献
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In this paper a method of electrospinning conducting and nonconducting biphasic Janus nanofibers using microfluidic polydimethylsiloxane (PDMS)-based manifolds is described. Key benefits of using microfluidic devices for nanofiber synthesis include rapid prototyping, ease of fabrication, and the ability to spin multiple Janus fibers in parallel through arrays of individual microchannels. Biphasic Janus nanofibers of polyvinylpyrrolidone (PVP)+polypyrrole (PPy)∕PVP nanofibers with an average diameter of 250 nm were successfully fabricated using elastomeric microfluidic devices. Fiber characterization and confirmation of the Janus morphology was subsequently carried out using a combination of scanning electron microscopy, energy dispersion spectroscopy, and transmission electron microscopy. 相似文献
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This paper reports the use of microfluidic approaches for the fabrication of yeastosomes (yeast-celloidosomes) based on self-assembly of yeast cells onto liquid-solid or liquid-gas interfaces. Precise control over fluidic flows in droplet- and bubble-forming microfluidic devices allows production of monodispersed, size-selected templates. The general strategy to organize and assemble living cells is to tune electrostatic attractions between the template (gel or gas core) and the cells via surface charging. Layer-by-Layer (LbL) polyelectrolyte deposition was employed to invert or enhance charges of solid surfaces. We demonstrated the ability to produce high-quality, monolayer-shelled yeastosome structures under proper conditions when sufficient electrostatic driving forces are present. The combination of microfluidic fabrication with cell self-assembly enables a versatile platform for designing synthetic hierarchy bio-structures. 相似文献