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排序方式: 共有467条查询结果,搜索用时 15 毫秒
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Tammy O Tengs Sajjad Ahmad Rebecca Moore Eric Gage 《Journal of policy analysis and management》2004,23(4):857-872
If manufacturing a safer cigarette is technically possible--an open question--then mandating that tobacco manufacturers improve the safety of cigarettes would likely have both positive and negative implications for the nation's health. On the one hand, removing toxins may reduce the incidence of smoking-related diseases and premature mortality in smokers. On the other hand, smokers might be less inclined to quit, those who have quit might resume the habit, and youth who have never smoked will have one less reason to avoid tobacco use. To assess the expected population health impacts of a legislative or regulatory mandate, we created the Tobacco Policy Model, a system dynamics computer simulation model. The model relies on secondary data and simulates the U.S. population over time spans as long as 50 years. Our simulation results reveal that even if requiring cigarettes to be safer makes smoking more attractive and increases tobacco use, a net gain in population health is still possible. 相似文献
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Eqbal Ahmad 《亚洲研究》2013,45(1):23-29
AbstractLouis Dumont has argued persuasively that the concept of caste is not simply a form of social stratification, but a way of looking at society as a whole. Dumont argues that the “Western mind” sees society as the relationship between individuals and the mass, but that the “Indian mind” sees relationships between groups (castes) and social unity. This holistic concept of Indian society is essentially religious, for it is based on beliefs and values which reflect a sacred order, undergird religious institutions, and are the subjects of religious texts. At the heart of these beliefs and values are the Hindu concepts of purity/pollution, and the karmic cycle of birth and rebirth. Both of these concepts are intimately related to the notion of Untouchability; and without them, the caste system would lose its religious legitimacy. The question, then, is whether the Untouchables accept this logic, or whether it is forced upon them. 相似文献
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Akhlaq Ahmad 《发展研究杂志》2016,52(1):5-21
This article explains the factors that contributed to the socialisation of youth into a radical ideology in one nationally powerful Islamist organisation in Pakistan. It argues that young individuals who join Islamist organisations do not necessarily hold pre-existing extremist views that dispose them towards such organisations. Instead, the radicalisation of personal beliefs and worldview may in fact also occur after joining such an organisation. Findings indicate that young members’ gradual orientation to an Islamist ideology resulted from the interplay of a number of factors. First, their close and significant friendships increasingly became concentrated inside the organisation. Second, participation in various organisational meetings brought a personally meaningful improvement in their skills and self-esteem. Third, the organisation bestowed power and influence on its members, both in psychological and actual terms. 相似文献
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Yi‐Hong Liao BS Jae‐Sang Hyun PhD Michael Feller MS Tyler Bell PhD Ian Bortins BS James Wolfe MS David Baldwin PhD Song Zhang PhD 《Journal of forensic sciences》2021,66(1):112-128
The forensic science community raised the need for improved evidence recognition, collection, and visualization analytical instrumentation for field and laboratory use. While the 3D optical techniques for imaging static objects have been extensively studied, there is still a major gap between current knowledge and collecting high‐quality footwear and tire impression evidence. Among optical means for 3D imaging, digital fringe projection (DFP) techniques reconstruct 3D shape from phase information, achieving camera‐pixel spatial resolution. This paper presents a high‐resolution 3D imaging technology using DFP techniques dedicated to footwear and tire impression capture. We developed fully automated software algorithms and a graphical user interface (GUI) that allow anyone without training to operate for high‐quality 3D data capture. We performed accuracy evaluations and comparisons comparing with the commercial high‐end 3D scanner and carried out qualitative tests for various impressions comparing with the current practices. Overall, our technology achieves similar levels of accuracy and resolution with a high‐end commercially available 3D scanner, while having the merits of being (1) more affordable; (2) much easier to operate; and (3) more robust. Compared with the current practice of casting, our technology demonstrates its superiority because it (1) is non‐destructive; (2) collects more evidence detail than casts, especially when an impression is fragile; (3) requires less time and money to collect each piece of evidence; and (4) results in a digital file that can easily be shared with other examiners. 相似文献
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The three decades of conflict in Afghanistan have taken thelives of more than a million people and the country and itspeople have suffered the gravest violations of human rights.There is a strong desire for justice among the Afghanis, butsince the fall of the Taliban, the transitional government withits base of international support has intentionally ignoredthe calls to deal with these past injustices. While Afghanistan has come a long way towards establishing democraticinstitutions, such as parliament, failure to deal with the crimesof the past threatens the legitimacy and democratic foundationof these institutions. The country has started on a path dealing with these past injusticesby conducting a comprehensive national consultation and developinga transitional justice strategy that is coherent, multidimensionaland based on the views of the public. The success of this resultingstrategy remains precarious, however, due to both the ongoinginsecurity in the country as well as its dependence upon theunreliable political will of Afghanistan's leadership. 相似文献
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A. J. Uddin Minhaj Ahmad 《公共行政管理与发展》1991,11(1):25-38
The present government of Bangladesh has extensively reformed the administrative system and upgraded the previous thana to upazila (sub-district) to serve as the focal point of development administration. A new tier of local government called Upazila Parishad (UZP) has been created and a large number of functions have been devolved to this institution along with the placement of central government employees at its disposal. The reformers argue that the present system will remove the inadequacies of the previous administrative system and will bring about an improvement in the co-ordination of field services at the upazila level. However, the actual situation represents a totally different picture. The desired integration— both vertical and horizontal—and co-ordination in local level planning is non-existent due to the absence of any clear direction from the central government. Proper co-ordination among the field services in the upazila administration does not exist due to the anomalous relation between the upazila and the national government, including excessive central control; the involvement of multiple agencies of the central government in guiding and supervising; ambiguity in government thinking; the absence of clarification from the ministries concerned and agencies on the timing of different development programmes; and conflict over the allocation of resources. There is also conflict between the different tiers of local government in respect of authority and resources. Relations between public representatives and officials at the upazila level are strained because a clear allocation of authority to political executives is lacking; areas for co-operation among different agencies have not been clarified; and public representatives and government officials lack mutual respect. 相似文献
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Won S. Choi PhD Edward F. Ellerbeck MD Harsohena Kaur MD Niaman Nazir MBBS MPH Jasjit S. Ahluwalia MD MPH MS 《Journal of youth and adolescence》2006,35(6):969-975
Behaviors developed in adolescence influence health later in life. The purpose of this study was to investigate the frequency of health care provider's discussion of health behaviors with overweight and non-overweight adolescents and identify demographic and health behaviors related to exercise, hours of television viewing, and weight issues associated with these discussions. A Cross sectional survey of urban adolescents was conducted. Trained interviewers administered surveys over a three month period in 2001 at an urban academic pediatric and adolescent clinic. The 252 adolescents surveyed had a mean age of 15 with 49% categorized as being at risk for overweight/overweight and 51% as normal weight using the CDC percentiles for BMI. While 16% of the adolescents reported that their physician or nurse discussed the amount of television they watched, rates of discussion related to exercise (58%), and weight (54%) were much higher. In multivariate analyses, health care provider discussions with adolescents regarding exercise were more common for overweight (O.R.=2.42, 95% C.I. [1.28–4.57]) and at risk for overweight (O.R.=1.98, 95% C.I. [1.03–3.81]) adolescents, whereas physician discussion of television viewing was not associated with weight. Discussions of weight were more common for female (O.R.=2.18, 95% C.I. [1.21–3.95]), African-American (O.R.=2.53, 95% C.I. [1.40–4.57]), and overweight (O.R.=3.92, 95% C.I. [1.97–7.81]) adolescents. Even after adjusting for weight, race and gender strongly influenced the frequency of discussions about weight in physician offices. Although health care providers frequently address weight and exercise with adolescents, more discussions related to sedentary behaviors such as television viewing may be warranted to address adolescent obesity.Received PhD in Epidemiology from University of California, San Diego. Research interests include smoking prevention and cessation among adolescents and health promotion interventions.Received MD from University of Missouri-Kansas City and MPH from Johns Hopkins University. Research interests include health services research and research in support of measurable, systematic improvements in the quality of medical care.Received medical degree from Christian Medical College, Punjab, India and Master of Public Health from University of Kansas School of Medicine. Research interests include diet and physical activity behaviors, role of the environment in obesity and obesity prevention, especially among children and adolescents.Received MBBS from Allama Iqbal Medical College, Punjab University, Lahore, Pakistan and MPH from University of Kansas Medical Center. Research interests include smoking cessation, database design, implementation, data management and analysis, and use of information technology in health care settings.Director, Cancer Prevention, Control, and Population Sciences, Kansas Cancer Institute. Received MD/MPH from Tulane University and MS from Harvard School of Public Health. Research interests include disparities in healthcare; smoking cessation among underserved populations, specifically African Americans; diet, nutrition, obesity, and physical activity. 相似文献