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11.
Shweta Shenoy Jasmine Kaur Chawla Swati Gupta Jaspal Singh Sandhu 《Journal of women & aging》2017,29(4):334-347
The purpose of this study was to find the prevalence of low bone health conditions and assess associated nutritional and other risk factors in Indian women aged 41–60 years. A total of 1,911 women participated in this cross-sectional study. Bone health was assessed using an Omnisense multisite quantitative ultrasound bone densitometer on two sites (radius and tibia). Crude prevalence of osteopenia and osteoporosis was found to be 30.09% and 19.89%, respectively. The Indian women were deficient in a majority of nutrients. Postmenopause, hysterectomy, hyperthyroid, hypothyroid, hypertension, low physical activity, low sun exposure, high stress levels, and low calcium levels were found to be independent risk factors of low bone health. 相似文献
12.
Jennifer Platt 《International Journal of Social Research Methodology》2016,19(1):31-49
The methods used when samples of journal articles are treated as the basis for measuring levels of quantification in national sociologies are examined. The data come from every identified example in English. It is found that operational definitions of ‘quantitative’ vary, while ‘qualitative’ work is characterised simply by the absence of sophisticated quantification, which is sometimes taken to imply quantitative incompetence rather than methodological choice. The articles used as data on the state of a whole national sociology are usually drawn from elite general journals in which many sociologists have never published, and ignore the authors’ national backgrounds and publications elsewhere. It is concluded that there is a gap between concepts and operational definitions which it would be desirable to fill. 相似文献
13.
This research compared direct and indirect measures of ambivalence, 2 commonly used strategies for measuring intergenerational ambivalence between older parents and their adult children. Directly and indirectly measured ambivalence, corresponding to felt and potential manifestations of the construct, were contrasted with each other and across generations. Data were derived from 253 older parent–adult child dyads participating in the Longitudinal Study of Generations in 2005. Direct and indirect measures of ambivalence were moderately correlated with each other within each generation. Children expressed greater indirect ambivalence than their parents but were no different than their mothers or fathers in their levels of direct ambivalence. Multivariate regression analyses examining the relationship between each type of ambivalence with individual and relationship characteristics found differences in associations across equations. The results suggest that direct and indirect measures are related but represent 2 distinct conceptions of ambivalence. This research highlights the challenges in understanding the full complexity of intergenerational relations and suggests that both generational perspectives be considered in future research. 相似文献
14.
词选是词的主要传播媒介,20世纪词选的数量和种类与前代相比达到最大值,其对柳永词的著录篇数与著录名次亦创历史新高。这种传播盛况充分表明此期柳永词在读者心目中的重要地位和深远影响。俚俗词进入柳永“名词”排行榜与“名词”的分散、扩展趋势则表明此期词学观念、词学趣尚的深刻变化与多元化发展态势。 相似文献
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16.
Microbiological food safety is an important economic and health issue in the context of globalization and presents food business operators with new challenges in providing safe foods. The hazard analysis and critical control point approach involve identifying the main steps in food processing and the physical and chemical parameters that have an impact on the safety of foods. In the risk‐based approach, as defined in the Codex Alimentarius, controlling these parameters in such a way that the final products meet a food safety objective (FSO), fixed by the competent authorities, is a big challenge and of great interest to the food business operators. Process risk models, issued from the quantitative microbiological risk assessment framework, provide useful tools in this respect. We propose a methodology, called multivariate factor mapping (MFM), for establishing a link between process parameters and compliance with a FSO. For a stochastic and dynamic process risk model of in soft cheese made from pasteurized milk with many uncertain inputs, multivariate sensitivity analysis and MFM are combined to (i) identify the critical control points (CCPs) for throughout the food chain and (ii) compute the critical limits of the most influential process parameters, located at the CCPs, with regard to the specific process implemented in the model. Due to certain forms of interaction among parameters, the results show some new possibilities for the management of microbiological hazards when a FSO is specified. 相似文献
17.
类生产函数企业价值链管理模型研究 总被引:2,自引:0,他引:2
本文从价值链的一些本质特征出发,借鉴生产函数的原理与形式,提出了一种新的价值链模型——类生产函数价值链管理,证明了类生产函数的一些重要性质,论述了此模型对企业价值链的管理与优化过程。最后进行了实例分析,分析过程及结果表明,该模型能够较好地实现价值链的优化与管理。 相似文献
18.
CRM中客户忠诚对价格敏感性的影响研究 总被引:6,自引:0,他引:6
综合考虑了CRM中的客户竞争、客户保持和转移成本因素,建立了基于客户忠诚度的客户关系保持的数学模型。然后以客户保持模型为基础,从理论上分析了不同忠诚度水平的客户的价格敏感性的不同及其原因。最后以客户价格敏感性为基础,得到了可供企业CRM系统借鉴的客户保持的定量策略。 相似文献
19.
Quantitative Estimates of Risk for Noncancer Endpoints 总被引:2,自引:0,他引:2
While quantitative estimates of risk have been a standard practice in cancer risk assessment for many years, no similar practice is evident in noncancer risk assessment. We use two recent examples involving methylmercury and arsenic to illustrate the negative impact of this discrepancy on risk communication and cost-benefit analysis. We argue for a more balanced treatment of cancer and noncancer risks and suggest an approach for reaching this goal. 相似文献
20.
Risk Assessment of Human Listeriosis from Semisoft Cheeses Made from Raw Sheep's Milk in Lazio and Tuscany (Italy) 下载免费PDF全文
Roberto Condoleo Ziad Mezher Selene Marozzi Antonella Guzzon Roberto Fischetti Matteo Senese Stefania Sette Luca Bucchini 《Risk analysis》2017,37(4):661-676
Semisoft cheese made from raw sheep's milk is traditionally and economically important in southern Europe. However, raw milk cheese is also a known vehicle of human listeriosis and contamination of sheep cheese with Listeria monocytogenes has been reported. In the present study, we have developed and applied a quantitative risk assessment model, based on available evidence and challenge testing, to estimate risk of invasive listeriosis due to consumption of an artisanal sheep cheese made with raw milk collected from a single flock in central Italy. In the model, contamination of milk may originate from the farm environment or from mastitic animals, with potential growth of the pathogen in bulk milk and during cheese ripening. Based on the 48‐day challenge test of a local semisoft raw sheep's milk cheese we found limited growth only during the initial phase of ripening (24 hours) and no growth or limited decline during the following ripening period. In our simulation, in the baseline scenario, 2.2% of cheese servings are estimated to have at least 1 colony forming unit (CFU) per gram. Of these, 15.1% would be above the current E.U. limit of 100 CFU/g (5.2% would exceed 1,000 CFU/g). Risk of invasive listeriosis per random serving is estimated in the 10?12 range (mean) for healthy adults, and in the 10?10 range (mean) for vulnerable populations. When small flocks (10–36 animals) are combined with the presence of a sheep with undetected subclinical mastitis, risk of listeriosis increases and such flocks may represent a public health risk. 相似文献