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41.
The concept of strategic control as described by the authors [8] partitions the decision horizon of the firm into two segments. In the long term, information is not precise, goals are vague and constraints are unclear. The problem for the firm is, in spite of this ambiguity, to establish a development window at the beginning of this period that reflects long-run factors and can serve as a guide for short-term behaviour. In the short run, information is precise enough for conventional mathematical programming models to be used to guide attainment of the development window. This paper presents an analytic model that solves the long-run problem defined by the strategic control framework and generates the required development window. A numerical example is presented for illustrative purposes. 相似文献
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Qualitative Sociology - This study is an analysis of the racial group identification pattern among the black bourgeoisie for the years 1950 through 1979. It is argued that the militant ideology of... 相似文献
44.
Erik Klijzing Jacques Siegers Nico Keilman Loek Groot 《Revue europeenne de demographie》1988,4(2):97-116
Numerous studies have found a negative relationship between female labour-force participation and fertility. In theory, there could be three explanations of this finding: (i) causality runs from labour-force participation to fertility, (ii) causality runs from fertility to labour-force participation, (iii) causality runs both ways. Alternatively, the relationship may not be a causal one. In practice, empirical studies covering a wide range of Western countries at different times, and utilizing a great variety of methods and techniques, have shown all four possibilities to be plausible. This may be because outcomes differ from country to country for socio-cultural reasons, or from period to period for historical ones. If so, applying various methodologies to data for one country at a particular point in time should yield consistent results that all point in one direction only. If they did not outcomes would appear to be method-dependent. The single data set used in this study refers to the Netherlands in 1984 (ORIN project). The relationship between fertility and labour-force participation in this data set is investigated by means of three methodologies, ranging from ‘static’ to ‘dynamic’, i.e., differing according to the degree in which they take the temporal aspects of the decision-making process underlying this relationship into account: simultaneous logit analysis, Granger analysis and Markov analysis. Each main approach is applied in two different ways or on two different subgroups, for a total of six applications. In spite of diverging operationalizations of the basic variables, it turns out that four of these six analyses favour the inference that fertility decisions do have an impact on labour force participation decisions but not the other way around, whereas the other two confirm earlier findings (from data sets collected during the 1970s) that the relationship is reciprocal. Substantively, this might indicate that the pattern of covariance is changing. But ‘static’ simultaneous logit analysis is the only method to consistently point at this causal unidirectionality, while outcomes from Granger and Markov analysis depend on the modality applied. Methodologically, this means that the issue of method-dependency, at least in this area, remains largely unresolved. 相似文献
45.
Depuis 1941, on a observe au Canada des variations importantes du niveau de la fecondite et la tendance est souvent illustree par les fluctuations du taux de natalite. Afin de mieux interpreter ces fluctuations, une analyse des principales composantes du taux de natalite s'avere necessaire: la distribution par age de la population feminine (mariee ou de tout etat matrimonial) et les taux de fecondite par age tant pour les femmes mariees que pour l'ensemble des femmes. C'est la baisse de la fecondite legitime qui est en majeure partie la cause de la chute du taux de natalite observee depuis 1959. Pour approfondir l'analyse, on etablit une comparaison entre des indices de fecondite legitime de cohorte et du moment. De 1946 a 1960, les indices du moment sont nettement plus eleves que ceux de cohorte; cependant contrairement a ce qui s'est passe au cours de cette periode, on observe maintenant un etalement des intervalles entre naissances, de telle sorte que depuis 1960, les indices du moment sont nettement plus faibles que les indices de fecondite legitime de cohorte.
Observers have witnessed important changes in the level of fertility in Canada since 1941. The trend is often illustrated by variations in the birth rate. To understand these variations better, the main components of the birth rate will be analysed: age distribution of total and married female population, and age-specific fertility rates for all women and married women. The decline of marital fertility is mostly responsible for the fall of the birth rate observed since 1959. In a further analysis, period and cohort marital fertility are compared: from 1946 to 1960, period measures were much higher than cohort measures; in contrast to what happened during those years we now observe a spread in birth intervals, so that, since 1960, period measures are much lower than cohort marital fertility measures. 相似文献
Observers have witnessed important changes in the level of fertility in Canada since 1941. The trend is often illustrated by variations in the birth rate. To understand these variations better, the main components of the birth rate will be analysed: age distribution of total and married female population, and age-specific fertility rates for all women and married women. The decline of marital fertility is mostly responsible for the fall of the birth rate observed since 1959. In a further analysis, period and cohort marital fertility are compared: from 1946 to 1960, period measures were much higher than cohort measures; in contrast to what happened during those years we now observe a spread in birth intervals, so that, since 1960, period measures are much lower than cohort marital fertility measures. 相似文献
46.
To insure the widest possible test of the hypothesis that individuals with lower ascribed or achieved status will demonstrate lower levels of self-esteem than higher status individuals, 972 subjects completed questionnaires which included the Rosenberg Self-Esteem Scale. North Florida residents were sampled using a disproportionate stratified random sampling technique. Seven groups were identified: psychiatric patients, prisoners, black or white college students, city residents, married black residents, and service-oriented professionals. When analyzing data for each group, the results indicated that persons with lower ascribed status (blacks, females, and older Americans) did not, as a group, have lower self-esteem scores than persons with higher ascribed status (Whites, males, and younger Americans). However, persons with lower achieved status in the areas of educational attainment and occupational prestige did have lower self-esteem scores than did persons of higher status. Further, having an institutionalized status—confinement at a state psychiatric hospital or a maximum security prison—is correlated with low self-esteem scores. Some possible explanations of these findings are explored. 相似文献
47.
Métier de sociologue,approche inductive et objet d'analyse. Brèves remarques à partir de Bourdieu 下载免费PDF全文
Jacques Hamel 《Revue canadienne de sociologie》2015,52(2):187-200
This article seeks to reveal the role played by the inductive approach in sociology. Grounded Theory assumes its full importance in formulating sociological explanations. However, the theory does pose a problem, in that the “method” is not based on clearly defined operations, which remain implicit. This article attempts to show that the object of analysis—what is being analyzed—makes perceptible the operations implicitly conceived by the analyst, based on Grounded Theory. With qualitative analysis software, such as Atlas.ti, it is possible to shed light on these operations. The article is illustrated by the theory of Pierre Bourdieu and the epistemological considerations he developed as a result of his qualitative inquiry, La Misère du monde. Cet article cherche à montrer le rôle que joue l'approche inductive en sociologie. La Grounded Theory revêt son importance pour formuler l'explication sociologique. Celle‐ci pose toutefois problème. En effet, la «méthode» ne repose pas sur des opérations clairement définies et celles‐ci restent implicites. Dans cet article, on cherche à montrer que l'objet d'analyse—ce sur quoi porte l'analyse—rend perceptibles les opérations que l'analyste conçoit implicitement en s'appuyant sur la Grounded Theory. Les logiciels d'analyse qualitative, comme Atlas.ti, permettent d'autre part de les mettre en évidence. L'article est illustré par la théorie de Pierre Bourdieu et les considérations épistémologiques qu'a développées cet auteur à la suite de son enquête qualitative sur la Misère du monde. 相似文献
48.
Glenn J. Wagner Matthew Hoover Harold Green Johnny Tohme Jacques Mokhbat 《心理学和人类性特征杂志》2015,27(3):264-275
Objectives: We examined the social, relational and network determinants of condom use and HIV testing among men who have sex with men (MSM) in Beirut. Methods: Two-hundred thirteen men were recruited via respondent driven sampling and administered a survey. Results: Sixty-four percent reported unprotected anal intercourse (UAI), including 23% who had UAI with unknown HIV status partners (UAIU); 62% of participants had tested for HIV. In multivariate analysis, being in a relationship was associated with UAI and HIV testing; lower condom self-efficacy was associated with UAIU and HIV testing; gay discrimination was associated with UAIU; MSM disclosure was associated with UAI, UAIU and HIV testing; and network centralization was associated with HIV testing. Conclusions: Multi-level social factors influence sexual health in MSM. 相似文献
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50.
Géraldine Duthé France Meslé Jacques Vallin Irina Badurashvili Karine Kuyumjyan 《Population and development review》2012,38(3):487-501
During the 1990s, the sex ratio at birth increased considerably and simultaneously in the three independent Caucasian countries, Armenia, Azerbaijan, and Georgia. At the end of the first decade of the twenty‐first century, levels remain abnormally high in Armenia and Azerbaijan (above 114 male births per 100 female births) and show erratic trends in Georgia. Analyzing data from demographic surveys carried out around 2005, we confirm the persistence of high sex ratios in these three countries and document significant differences in fertility intentions and behavior according to the sex of the previous child or children that constitute evidence of the practice of sex‐selective abortion. These countries combine societal features and medical systems that make this phenomenon possible: son preference in a context of low fertility and the possibility of prenatal sex selection given easy access to ultrasound screening and induced abortion. Why high sex ratios are observed only in these three countries of the sub‐region remains, however, an open question. 相似文献