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Nil Kamal Hazra 《统计学通讯:理论与方法》2017,46(19):9842-9858
Stochastic orders are very useful tools to compare the lifetimes of two systems. Optimum lifetime of a series (resp. parallel) system with general standby component(s) depends on the allocation strategy of standby component(s) into the system. Here, we discuss three different models of one or more standby components. In each model, we compare different series (resp. parallel) systems (which are formed through different allocation strategies of standby component(s)) with respect to the usual stochastic order and the stochastic precedence order. The results related to the cold as well as the hot standby models are obtained as particular cases of the results discussed in this article because the model considered here is a general one. 相似文献
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Through the investigation of kolberi (cross-border labor), this paper sheds light on the state’s policy of de-development (or internal colonialization) of the Kurdish region (known as Rojhelat) in Iran. While the most dangerous form of labor, kolberi has become a dominant employment opportunity for Rojhelat Kurds in the last decade. There are no Iranian state laws criminalizing kolberi, and yet those laborers die on a regular basis—being shot or thrown off mountain cliffs by the state forces, stepping into minefields, and so forth. Nevertheless, there is not a single scholarly paper on this subject. Using the mixed methods research approach, our study analyzes the existing data along with in-depth interviews with 20 people who are currently engaged in kolberi to contextualize this understudied phenomenon. Our finding demonstrates that kolberi is a direct outcome of a uni-ethno-religious policies of development and part and parcel of the state's Perso-Shi‘ification strategy in Kurdistan. Therefore, kolberi is more of a political phenomenon than an economic one. 相似文献
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Gulnaz Anjum Anila Kamal Sania Bilwani 《Journal Of Human Behavior In The Social Environment》2013,23(2):282-299
ABSTRACTIn recent years, the participation of young women in education has been on the rise and yet many of them do not end up joining the workforce. This is particularly true for the fields of medicine, and psychology. Using a qualitative research design, we explored underlying social and psychological reasons (antecedents) for this lack of professional participation by females who had or are graduating in medical and psychology degrees. The sample of this qualitative study consisted of 67 female informants including medical doctors, medical students, psychologists, and psychology students. The results based on interpretive phenomenological analyses (IPA) indicated multiple key antecedents that play a crucial role in keeping women from their professional participation in the two fields. Results based on IPA indicated that Gender Role Beliefs and Strain, Economic Decision Making, Women’s Mobility, Role of Society, Objectification of Women and explicit Discrimination and Violence were key thematic antecedents. There were multiple subthemes that emerged as reasons why women’s participation and stay in these fields was difficult, hence creating a substantial gender gap in professional participation and success in the workforce. Knowledge and understanding of these antecedents and their role in prevalence of gender gap in workforce participation is crucial for building policies and strategies on how to engage and retain women in professional work-force. Cultural relevance and societal implications of our findings are discussed with their policy recommendations. 相似文献
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The issue of uncertainty has been one of the most important topics in the research on multinational enterprises' foreign market entry modes. This paper provides a conceptual review of the literature on the role of uncertainty in entry‐mode strategies. It is found that transaction cost theory has focused primarily on entry modes as a way of minimizing behavioural uncertainty, while research using the more recent real options approach has distinguished between endogenous and exogenous types of uncertainty and provided evidence that managing uncertainty through appropriate entry modes may lead to competitive advantage. By synthesizing the relevant literature, this paper provides some new perspectives and avenues for future research on uncertainty and entry‐mode choices by considering the impact of firm learning, prior experience and host market attractiveness. 相似文献
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Ensuring good soil quality is essential to promoting plant growth in urban parks and building ecological resilience into a
cityscape. Periodically used to restore a degraded urban ecosystem, parkland naturalization is a management approach designed
to facilitate the return of an area to a natural state by largely discontinuing maintenance activities and restricting public
access. This study investigates the potential for parkland naturalization to improve soil quality in a forested portion of
Kew Gardens Park, Toronto, Canada by comparing soil physical properties in three six-year-old naturalization enclosures with
those found in adjacent managed parkland. Soil texture, compaction, bulk density, and surface water infiltration rate were
measured at 104 sample sites, while ordinary kriging was used to interpolate two-dimensional prediction surfaces representative
of soil properties. Sand and loamy sand were the dominant soil texture classes found across the study site. Highly compacted
soil (>2,000 kPa) and soil with a bulk density >1.8 Mg/m3 (values sufficiently elevated to restrict tree root growth and respiration and impair soil water infiltration) were spatially
correlated with high pedestrian traffic areas and corridors used by festival and park maintenance vehicles. In contrast, compaction
and bulk density measurements in the naturalized areas were at or below thresholds known to impair root function ([`(X)] {{\overline{X}}} at 10 and 30 cm depth: 849 and 1,311 kPa, 1.15 and 1.51 Mg/m3, respectively). Similarly, water infiltration rates were rapid ( [`(X)] = 470mm/hr ) \left( {{{\overline{X}}} = {47}0{\hbox{mm}}/{\hbox{hr}}} \right) within the naturalization enclosures but retarded to the point of surface pooling in parkland subjected to regular public
use. In the absence of quantitative baseline data, our use of spatial analysis demonstrates that parkland naturalization is
a good management practice for restoration of soil physical characteristics. While our results show improvements to soil properties
in a relatively short period of time, variability in the soil response rate to parkland naturalization will be dependent upon
disturbance history as well as on soil and climate type. 相似文献
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Seyed Hossein Mohaqeqi Kamal Mehdi Basakha Gholamreza Ghaedamini Harouni 《Social indicators research》2018,137(3):1061-1072
This paper employs a multidimensional index for assessing women’s well-being in Iranian provinces using demographic and health survey macro data. Besides economic status as a traditional dimension for objective well-being, other factors such as health, education, risk, and technology as well as self-reported life satisfaction and happiness (psychological well-being) have been included as non-material well-being dimensions. We found that the values of women’s well-being are distributed unequally across the provinces. Southern provinces demonstrate the worst performances and central provinces have the best. Generally, Iranian women are in poor condition in terms of economic variables (e.g. income and participation in the job market), psychological well-being (life satisfaction), HIV literacy, use of the internet, and access to mass media. On the other hand, in recent years, they have made significant progress in education (such as the rate of literacy, high school degree), and health (safe pregnancy care and nutritional supplements). 相似文献
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In a North‐South model with endogenous foreign direct investment (FDI), we examine the impact of Southern intellectual property rights (IPR) protection on the mode and industrial composition of international technology transfer. A novel feature of the model is that, due to technological reasons, industries differ with respect to their susceptibility to imitation. In equilibrium, licensing occurs in industries where the risk of imitation is low and FDI where it is of intermediate magnitude. Stronger IPRs in the South (1) alter the industrial composition of multinational activity toward licensing at the expense of FDI; (2) reduce local imitation; and (3) increase licensing and, to a lesser extent, FDI. (JEL F10, O34) 相似文献