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1.
以往的救灾实践对建立国家血液战略储备体系提出了迫切要求。国家血液战略储备库的建设问题亟待解决。由于血液产品特性以及应急血液保障特性的存在,使得国家血液战略储备库的选址决策具有一定的复杂性。本文将问题定位为选址-库存问题。首先,以应急条件下血液保障及时度最高为目标,构建了一个不确定环境下考虑多情景、多血型、多阶段、带提前期、有容量限制、日常随机需求、有预算约束及协同定位的国家血液战略储备库选址-库存模型。同时,为了规避应急条件下的不确定风险,进一步构建了国家血液战略储备库选址-库存问题的随机p-鲁棒优化模型。该模型为离散非线性混合整数规划模型,难以快速精确求解。故基于模型性质,设计了相应的遗传算法。最后,设计了两组算例验证模型与算法的有效性。其中,第1组算例基于我国大陆地区31个省级血液中心与省级行政区的数据,并根据不同预算值给出6个算例,得到了国家血液战略储备库的选址-库存决策方案。第2组算例为6个不同规模的模拟算例,用来测试不同规模下的算法性能。算例结果表明:遗传算法的性能更好;鲁棒解与确定性模型最优值相差不大(最大差距≤1.08%),可降低不确定性导致的风险。实践中,可对本文所建模型稍作改进,应用于具有类似特征的易腐品(药品、粮食等)应急物资储备库选址-库存决策。  相似文献   
2.
以南京某综合性大学和某医学院校为例,比较两类学校学生在无偿献血认知、献血参与态度及献血动机方面的差异。通过文献研究、专家咨询及焦点小组评分编制调查问卷。认知差异比较采用卡方检验,态度和动机差异采用t检验。综合性大学学生对无偿献血的认知水平较低。医学类院校学生在献血参与态度方面的得分较高,二者在献血感受上无差异。献血动机方面,医学类院校学生献血的利他性得分较高,在两校暂未献血人群中,医学类院校学生自我效能型和献血奖励型动机得分更高。需加强对综合性大学学生献血知识的普及,根据态度及动机差异采取有针对性的献血宣传及招募。  相似文献   
3.
血缘是中国文化的最本质要素,它建构、锁定了以家庭为核心,以"家国一体"为主要构架的中国伦理;在承载几千年的历史使命之后,在遭遇西方文明的碰撞之时,血缘文化及其建构的中国伦理在合法性上遭受了质疑;从过去的封建小农经济到今天的大工业社会,中国伦理的失范与重建成为一代代学人所共同关注的核心。  相似文献   
4.
ABSTRACT

Recently, the FDA announced that it would soon lift the long-standing lifetime ban on blood donation by men who have sex with men (MSM). Reexamining blood donation by MSM, it is clear that there are several ethical goods that must be balanced. Through balancing the primary duty to safety with the imperatives to craft a policy that is formally equal, upholds the public's trust, and is nondiscriminatory, an ethical blood donation deferral guideline may be advanced, both for MSM and the population at large.  相似文献   
5.
Taking their cue from a seeming dissonance between the theory of commodification and exploitation of migrant care workers and the case study of the outsourced self proposed by Hochschild, the author speculates whether or not the family–caregiver relationship may be equal and inclusive. The argument is unraveled by posing another question en route: what specific ‘catalysts’ can trigger ‘high-intensity affective relationships’? Elster defines 'essentially byproduct' the result of a process lacking any direct and conscious link between outcome and intention, and requiring the relaxation of the control of reason in order to be fulfilled. The author mixes significant theoretical results coming both from the relational Palo Alto School and from history of families studies, concluding that an equal and inclusive relationship may be like an Elster’s ‘essentially byproduct’ of a market relationship , when a high-intensity affective relation acts as a ‘catalyst’. The frame suggested in this article seems consistent with recent constructionist reinterpretations of the idea of kinship, which take shape and evolve through ‘everyday experiences’. Kinship thus shifts towards a more complex undefined category, that of Karsten’s relatedness. Speaking of which, the author argues some logical reasons suggesting a generalized adoption of the term only with great care and caution.  相似文献   
6.
A weaver, seamstress, laundress and artist, in this essay I shall spin a yarn, tangle a web, and construct a text(ile) of the inter-weave of narrative and identity that I define as my intellectual, textual, somatic and material/visual practice obsessions. My work explores ‘the places in-between’ in the entanglements of Irish and Northern Irish gender and identity, and in the abject fabrics of death and of desire. As an Irish feminist, sense-making of the complexities, conundrums, challenges and contradictions of my land, my cloth, my body and my culture owes much to Irish women before me who fought for female suffrage, and Irish women now – north and south of the border that divides the island of Ireland – who still struggle for equality of citizenship, social justice, human rights, and full reproductive autonomy. My contention is that when we accept that Ireland herself is a many-layered cloth, a stained and bloodied cloth, a cloth marked irreversibly by history, conflict, denial and abuse, stained by its own repression, marked through denial of all its people’s rights and needs, and bloodied by its greatest export, the haemorrhage of its people, then – polemical, didactic or reflective, with more compassion, empathy, humility and heart – we just might make peace with our past.  相似文献   
7.
According to recent findings, nonprofit organizations should address the relationships of nonprofit service quality, satisfaction, loyalty, and organizational identification when planning and evaluating donor surveys. This article presents a donor satisfaction barometer that can be used to gain insights into the strength of these key relationships and thereby establish a basis for calculated relevant indices. With such indices, nonprofit organizations can compare stakeholder performance over time and benchmark themselves against other organizations. Data from 2,599 blood donors to one section of the German Red Cross, collected through the proposed donor satisfaction barometer, show that service quality drives satisfaction, and donor satisfaction and organizational identification both exert significant positive effects on donor loyalty. Therefore, nonprofit organizations should use a combined strategic approach that improves both donor satisfaction and organizational identification to increase donor loyalty. The successful application of the donor satisfaction barometer also suggests its value for other nonprofit industries and offers important insights for managers.  相似文献   
8.
Objective: To compare anthropometric measures of body mass index (BMI), waist circumference (WC), waist-to-height ratio (WHtR), and sagittal abdominal diameter (SAD) as predictors of blood pressure in college students. Participants: Students (N = 116) were recruited from November 2012 to May 2014 at an urban university and rural community colleges. Methods: Students underwent a brief physical examination during which anthropometric measures were obtained and blood pressure was measured. Covariates were measured using self-reported questionnaires. Hierarchical multiple linear regressions were used for the data analysis. Results: All anthropometric measures were predictive of systolic (SBP) and diastolic blood pressure (DBP). WC was the strongest predictor of SBP (β = .582, p < .01) explaining an additional 3–4% of the variance than BMI, WHtR, or SAD. The measures were similar in predicting DBP. WC predicted SBP independent of BMI. Conclusions: Clinicians should consider using WC to assess the risk for hypertension in college students.  相似文献   
9.
以宝鸡赤沙为代表的陕西血社火首先是一种祭祀,相信神灵的存在并向其献祭,是其基本的文化内涵。在这一前提下,血社火中所扮演的人物身份和角色以及故事情节倒是次要的,重要的是其刀劈斧砍、剑刺凳扎及铡刀铡额、利剑穿腹的瞬间残酷的杀人场面。血社火的这一共同而基本的特征蕴含了从原始社会流传下来的古代祭祀的两个重要而独特的因素——人牲和血祭。所有的血故事,无论情节多么曲折,人物形象多么丰满而逼真,或善或恶,都投射了古代以亲子为牲,以族人为牲,以仇人为牲,以俘虏为牲的影子。鲜红的血迹凝结为人们关于几千年来神秘而恐怖的祭祀文化集体无意识的象征符号。这种关于殷周祭祀文化的集体无意识以生命传承的方式依然存留在现代陕西的民间社会,它是生长血社火这一独特民间文化奇葩的根。  相似文献   
10.
文章选取了120名妊娠期糖尿病孕妇,随机分为系统健康教育组和传统健康教育组,观察两组血糖控制情况及妊娠结局,以探讨系统健康教育对妊娠期糖尿病孕妇的干预效果。结果发现,系统教育组和传统教育组均可使血糖下降,且系统教育组要优于传统教育组,差异有统计学意义。两组在分娩方式、新生儿体重、巨大儿、妊高症、羊水过多、早产儿、胎儿宫内窘迫等方面比较无显著差异;在胎膜早破、产时失血方面,系统健康教育组低于传统健康教育组,差异有统计学意义。据此认为,系统健康教育有助于妊娠期糖尿病孕妇控制血糖和降低产科并发症。  相似文献   
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