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1.
Spatial thinking and spatial knowledge generation in decision-making are still not mature fields of study in planning research, despite these being crucial elements in addressing the issues of the twenty-first-century city. This article contributes to their understanding by exploring their interrelationships with spatial data usage. Through storylines, it analyzes the arguments that planning practitioners offer in support of infrastructure-led decisions in Arequipa (Peru), before and after spatial data usage. The article concludes that spatial data usage improve spatial thinking to different extents, yet suggests aligning spatial data generation and the inclusion of GIS-based spatial analyses with the spatial knowledge needed by routine planning practice.  相似文献   

2.
The objective of this study was to estimate the spatial distribution of work accident risk in the informal work market in the urban zone of an industrialized city in southeast Brazil and to examine concomitant effects of age, gender, and type of occupation after controlling for spatial risk variation. The basic methodology adopted was that of a population-based case-control study with particular interest focused on the spatial location of work. Cases were all casual workers in the city suffering work accidents during a one-year period; controls were selected from the source population of casual laborers by systematic random sampling of urban homes. The spatial distribution of work accidents was estimated via a semiparametric generalized additive model with a nonparametric bidimensional spline of the geographical coordinates of cases and controls as the nonlinear spatial component, and including age, gender, and occupation as linear predictive variables in the parametric component. We analyzed 1,918 cases and 2,245 controls between 1/11/2003 and 31/10/2004 in Piracicaba, Brazil. Areas of significantly high and low accident risk were identified in relation to mean risk in the study region (p < 0.01). Work accident risk for informal workers varied significantly in the study area. Significant age, gender, and occupational group effects on accident risk were identified after correcting for this spatial variation. A good understanding of high-risk groups and high-risk regions underpins the formulation of hypotheses concerning accident causality and the development of effective public accident prevention policies.  相似文献   

3.
This article engages the question—what is the right business‐society relationship? We consider three perspectives that seek to address the relationship: corporate social responsibility (CSR), social entrepreneurship (SE), and conscious capitalism (CC). We take a macroapproach considering how commentary about these approaches establishes a direction for corporate practice and its relationship to key stakeholder groups. We argue that these perspectives are ‘D'iscourses that provide arguments for and articulations about the direction of corporate practice and the business‐society relationship. To organize our review of each perspective, and focus our critique, for each we highlight (a) drivers and influencers, (b) core assumptions and defining features, and (c) approaches and exemplars. Although distinct, all emphasize effective business practices as key to meeting social needs. CSR suggests legitimizing business practice; SE relocates business practices; and CC seeks to reimagine/rehabilitate business for social good. Ultimately, we conclude that these Discourses lack a clear communicative focus in terms of decision making within these organizations. We attend to this and other implications, and offer avenues for further research.  相似文献   

4.
In this paper, we consider data‐driven approaches to the problem of inventory control. We first consider the approach of operational statistics and review related results which enable us to maximize a priori expected profit uniformly over all parameter values, when the demand distribution is known up to the location and scale parameters. For the case of the unknown shape parameter, we first suggest a heuristic approach based on operational statistics to obtain improved ordering policies and illustrate the same for the case of a Pareto demand distribution. In more general cases where the heuristic is not applicable, we suggest linear correction and support vector regression approaches to better estimate ordering policies, and illustrate these using a Gamma demand distribution. In certain cases, our proposed approaches are found to yield significant improvements.  相似文献   

5.
This paper analyses the cooperation governance mode and possible factors affecting the choice between an equity joint venture and a contractual agreement. Although transaction cost economics (TCE) provides a workable and well-used framework within which to analyse this choice, it only captures the static transaction costs related to the two modes. This has lead to a discussion about dynamic governance costs and possible benefits related to the governance mode. The objective of this paper is to show how this extended framework differs from TCE when determining the appropriate governance mode. We use four factors related to nature of cooperation to contrast these two approaches. We collected empirical data about cooperation in the information and communications technology (ICT) sector in order to find support for these arguments. Estimates based on logistic regression analysis suggest that our dynamic governance cost and benefit perspective really provides valuable complementary insights into the traditional static transaction-cost framework when it is a question of the choice of alliance form.  相似文献   

6.
A probabilistic risk assessment study has been undertaken in the French city of Lyons. The issue was to know whether it was justified to forbid hazardous material lorries in the city center and to divert them through the suburbs. Therefore, two routes, the City Center route and the Suburban route were compared. This paper describes the analysis and shows how the results were used in the decision-making process. It also lists the difficulties that are encountered when trying to incorporate formal risk analysis into actual decision-making processes. The risk analysis showed that rerouting is an effective option with respect to all criteria. The mathematical expectation of the number of deaths is divided by three, the reduction on the annual frequency of catastrophic accidents is even more important (about one order of magnitude for accidents involving more than 50 deaths). The spatial analysis proved that the risk was more evenly distributed along the Suburban route. However, the annual expected number of death is low: 0.5 in the worst case. So traditional decision-making approaches do not indicate the necessity of rerouting. Such a situation is believed to be typical for risk management of major hazards. In Lyons, the use of a very small risk aversion factor is sufficient to justify the rerouting option on a formal decision-aiding basis. This is rather unusual, but it is thought that the recognition of the importance of risk aversion by the decision-makers themselves is a very positive outcome from this study.  相似文献   

7.
Debates about short-termism in business tend to center around the role of shareholder pressures and managers’ incentives, while the role of organizational structure remains understudied. In our paper, we adopt an attention-based lens to elucidate the role of organizational structure in directing the attention of management towards pressures for short-term results at the expense of the long term. Specifically, we argue that greater scale of operations, hierarchy, bureaucracy, and workforce flexibility reduce slack resources available to senior managers and increase the complexity of information presented to them in different ways. As a result, the senior managers shift their attention to short-term pressures, which are more easily understood, at the expense of attention for long-term considerations. Analysis based on a survey of senior managers in 3221 private firms in the Netherlands provides support for our arguments.  相似文献   

8.
《The Leadership Quarterly》1999,10(2):129-144
I use a framework by Reichers and Schneider (1990) to explore the evolution of leadership research across time. This analysis leads to development of the doom and gloom arguments about the field in the 1970s and early 1980s. Transformational and charismatic leadership is discussed as it takes off following the doom and gloom period. That takeoff is followed by revisiting the shift to transformational/charismatic leadership and considering why some of the leading and next-generation scholars set off in this new direction. I then link transformational/charismatic leadership with more traditional approaches and finish with conclusions concerning forces for change, assessing where the leadership field is currently, and providing a future assessment with some caveats. I conclude that a crucial contribution of transformational/charismatic leadership has been in terms of its rejuvenation of the leadership field, regardless of whatever content contributions it has made. This rejuvenation came about because of what most would consider a paradigm shift that has attracted numerous new scholars and moved the field as a whole out of its doldrums.  相似文献   

9.
How does one deal with problems of risk transfer if it is the case that increasing risks to future generations decreases the risks to present generations, and increasing the risks to present generations decreases the risks to future generations? In the case of high‐level nuclear waste and spent fuel, for example, should billions of dollars be spent to secure the wastes and protect future generations, or should the same monies be spent on present‐day needs, under the assumption that future generations will be better able to deal with the waste than we are at present? Although these questions may appear insoluble, they become less so when one recognizes several common ethical and logical errors that beset many discussions of technological risk and duties to future generations. After briefly explaining the grounds for inter‐ and intragenerational equity, this analysis argues for three propositions about many treatments of inter‐ and intragenerational ethics: (1) these discussions often err because they frame policy arguments in terms that ignore rights and focus on maximizing welfare or utility, (2) they err because they frequently frame policy arguments in ways that set inter‐ and intragenerational welfare at odds, when they are not, because they ignore ameliorating practices and the conditions for proxy consent, and (3) they also err because they engage in risk practices that do not match their risk rhetoric.  相似文献   

10.
This paper presents an integrated framework for studying organizational spaces. It suggests that existing research can be classed into three categories: studies of space as distance; studies of space as the materialization of power relations; and studies of space as experience. These approaches are drawn together using Henri Lefebvre's theory of spatial production to argue that an adequate understanding of organizational spaces would investigate how they are practised, planned and imagined. Moreover, an adequate theory of space would account for multiple spatial levels, or scales. To illustrate the potential of the synthetic framework, a reading of three exemplary studies of multiple organizational spaces, from social anthropology and economic geography, is presented. The paper concludes by presenting a research agenda that indicates how data collection and analysis in established fields such as employee relations and international business might become more ‘space sensitive’ by integrating such theorized cross‐scale analysis.  相似文献   

11.
In the current issue of Decision Sciences, Brightman [2] argues that the growth of the discipline should be managed, and individual decision scientists must ultimately be held accountable for the ethical implications of implementing their research findings. The purpose of this comment is to examine several principles behind Brightman's arguments and to initiate a discussion of some of the important issues that have been raised. The distinction between the inquiry and technological imperatives and questions about the universality of moral reasoning at the ethical-principles leverl further Brightman's analysis and pose important considerations for decision scientists.  相似文献   

12.
Soil lead pollution is a recalcitrant problem in urban areas resulting from a combination of historical residential, industrial, and transportation practices. The emergence of urban gardening movements in postindustrial cities necessitates accurate assessment of soil lead levels to ensure safe gardening. In this study, we examined small‐scale spatial variability of soil lead within a 15 × 30 m urban garden plot established on two adjacent residential lots located in Detroit, Michigan, USA. Eighty samples collected using a variably spaced sampling grid were analyzed for total, fine fraction (less than 250 μm), and bioaccessible soil lead. Measured concentrations varied at sampling scales of 1–10 m and a hot spot exceeding 400 ppm total soil lead was identified in the northwest portion of the site. An interpolated map of total lead was treated as an exhaustive data set, and random sampling was simulated to generate Monte Carlo distributions and evaluate alternative sampling strategies intended to estimate the average soil lead concentration or detect hot spots. Increasing the number of individual samples decreases the probability of overlooking the hot spot (type II error). However, the practice of compositing and averaging samples decreased the probability of overestimating the mean concentration (type I error) at the expense of increasing the chance for type II error. The results reported here suggest a need to reconsider U.S. Environmental Protection Agency sampling objectives and consequent guidelines for reclaimed city lots where soil lead distributions are expected to be nonuniform.  相似文献   

13.
It is widely accepted that the relationship between lightning wildfire occurrence and its influencing factors vary depending on the spatial scale of analysis, making the development of models at the regional scale advisable. In this study, we analyze the effects of different biophysical variables and lightning characteristics on lightning-caused forest wildfires in Castilla y León region (Central Spain). The presence/absence of at least one lightning-caused fire in any 4 × 4-km grid cell was used as a dependent variable and vegetation type and structure, terrain, climate, and lightning characteristics were used as possible covariates. Five prediction methods were compared: a generalized linear model (GLM), a random forest model (RFM), a generalized additive model (GAM), a GAM that includes a spatial trend function (GAMs) and a spatial autoregressive model (AUREG). A GAMs with just one covariate, apart from longitude and latitude for each observation included as a combined effect, was considered the most appropriate model in terms of both predictive ability and simplicity. According to our results, the probability of a forest being affected by a lightning-caused fire is positively and nonlinearly associated with the percentage of coniferous woodlands in the landscape, suggesting that occurrence is more closely associated with vegetation type than with topography, climate, or lightning characteristics. The selected GAMs is intended to inform the Regional Government of Castilla y León (the fire and fuel agency in the region) regarding identification of areas at greatest risk so it can design long-term forest fuel and fire management strategies.  相似文献   

14.
The paper complements Abu-Orf's theory about violent settings by setting out a theory of fear in urban planning in ordinary urban contexts around three arguments: spatialization of fear; (modernist) spatialities and the encounter and political economies of urban fear. The three theoretical arguments are used to re-frame the planning history of Chelas, an affordable housing district in Lisbon, Portugal, and debate the way fear shapes, and is shaped in turn by, planning practice. Confirming that (growing) fear in ordinary urban contexts is not just an effect of the contemporary organization of cities, the paper argues for a theorization of fear that combines global (hegemonic) and a local (discursive/contingent) perspectives in the theorization of urban fear, and advocates for the need to put fear, and its capacity to create a crisis in urban policy, at the heart of planners' agendas.  相似文献   

15.
Numerous traditional theories and paradigms of leadership purport to describe what leadership is. It is difficult to reconcile these traditional approaches, however, if each one alone, independent of the others, is viewed as capturing the actual identity of leadership. In this article, we take an integrative view of traditional approaches to leadership. To do so, we first identify some underlying ideas common to them. Next, we explain how these underlying ideas lead us to a fundamental theory about close relationships—that is, self-expansion theory, which refers to a psychological process in which an individual incorporates another into the self (Aron & Aron, 1986). We then review the traditional leadership theories to explore whether these theories may be linked through self-expansion theory and whether self-expansion may help to explain why boundary conditions have been discovered for all of them. In this process, we explore whether traditional approaches to leadership might also be linked with more contemporary approaches through self-expansion theory. Finally, we discuss the implications for future research and professional practice of the integration of traditional approaches to leadership.  相似文献   

16.
关于农村劳动力流动的政策问题分析   总被引:62,自引:0,他引:62  
本文主要从政策运行过程讨论农村劳动力流动的政策问题。已有的研究 (杜鹰、白南生等,1997;宋洪远、白南生等 ,2001)表明 ,政策和体制是影响农村劳动力外出与回流的重要因素。我们在调查中也时常听到流动劳动力的抱怨 ,外出期间受到很多不公平的待遇和歧视。要全面深刻揭示农村劳动力外出与回流的现象及其原因 ,就必须对政策问题进行专门的讨论和分析。本文的分析主要是依据2001年6月对东部发达地区山东威海、江苏常熟等市和同年7月对中部核心地区河南、湖南两省的三县两市 (郾城县、邓州市 ,临澧县、嘉禾县、浏阳市 )的实…  相似文献   

17.
Gustafson  Per E. 《Risk analysis》1998,18(6):805-811
A substantial body of risk research indicates that women and men differ in their perceptions of risk. This paper discusses how they differ and why. A review of a number of existing empirical studies of risk perception points at several problems, regarding what gender differences are found in such studies, and how these differences are accounted for. Firstly, quantitative approaches, which have so far dominated risk research, and qualitative approaches give different, sometimes even contradictory images of women's and men's perceptions of risk. Secondly, the gender differences that appear are often left unexplained, and even when explanations are suggested, these are seldom related to gender research and gender theory in any systematic way. This paper argues that a coherent, theoretically informed gender perspective on risk is needed to improve the understanding of women's and men's risk perceptions. An analysis of social theories of gender points out some relations and distinctions which should be considered in such a perspective. It is argued that gender structures, reflected in gendered ideology and gendered practice, give rise to systematic gender differences in the perception of risk. These gender differences may be of different kinds, and their investigation requires the use of qualitative as well as quantitative methods. In conclusion, the arguments about gender and risk perception are brought together in a theoretical model which might serve as a starting point for further research.  相似文献   

18.
A number of more contextual and process‐oriented approaches have been followed recently in entrepreneurial research, including the cognitive approach, the learning approach and the evolutionary approach. This paper reviews the evolutionary approach to the study of entrepreneurship. This includes an overview of evolutionary theory and the arguments behind its relevance to the study of socio‐economics systems, as well as a review of the application of evolutionary theory to the study of entrepreneurship at both the population level (population ecology) and the organizational level (strategic choice). The reconciliation of these two perspectives is discussed, and comparisons are made with the cognition‐based and learning‐based approaches. It is argued in this paper that an evolutionary approach to the study of entrepreneurship leads to more theory‐driven research with a strong focus on process and context. In addition, it offers more than both the cognition‐based and learning‐based approaches because it allows for multi‐level analyses of the new venture creation process, encompassing both the population ecology (population level) and strategic choice (organizational level) perspective, and the resultant interactions between both hierarchies, giving valuable insight into the same overall evolutionary process.  相似文献   

19.
It is well documented that more research can lead to hardened positions, particularly when dealing with complex, controversial, and value‐laden issues. This study is an attempt to unveil underlying values in a contemporary debate, where both sides use scientific evidence to support their argument. We analyze the problem framing, vocabulary, interpretation of evidence, and policy recommendations, with particular attention to the framing of nature and technology. We find clear differences between the two arguments. One side stress that there is no evidence that the present approach is causing harm to humans or the environment, does not ruminate on uncertainties to that end, references nature's ability to handle the problem, and indicates distrust in technological solutions. In contrast, the other side focuses on uncertainties, particularly the lack of knowledge about potential environmental effects and signals trust in technological development and human intervention as the solution. Our study suggests that the two sides’ diverging interpretations are tied to their perception of nature: vulnerable to human activities versus robust and able to handle human impacts. The two sides also seem to hold diverging views of technology, but there are indications that this might be rooted in their perception of governance and economy rather than about technology per se. We conclude that there is a need to further investigate how scientific arguments are related to worldviews, to see how (if at all) worldview typologies can help us to understand how value‐based judgments are embedded in science advice, and the impact these have on policy preferences.  相似文献   

20.
For quite a few years the two authors have been engaging in dialogues about management issues. Using as a model Plato's dialogues between Socrates and his various students, we have tried to clarify the nature of a concept by asking questions and thinking carefully about the answers. We disagree about many things, but agree that we respect each other's opinions, and can clarify our own viewpoints by debating them respectfully with another. For this dialogue, we decided to focus on the question of the scale of business operations. One of us has a particular preference for small scale enterprise, and for the localisation of the economy, because he believes that the giganticism of corporations is behind many of the problems we face today. As you will see, the other protagonist disagrees, arguing instead that other issues than scale are at the root of why some businesses do bad things.  相似文献   

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