نتایج جستجو برای: c35

تعداد نتایج: 344  

2005
Valentino Dardanoni

In this paper we combine recent advances in marginal modelling for contingency tables with the notion of copula to formulate a class of models for describing how the joint distribution of a set of ordinal response variables depends on exogenous regressors. We derive the main properties of a marginal parameterization, the global interaction copula, whose nature is essentially non parametric, and...

2011
Silvia Lui Martin Weale

We explore the effects of income and, additionally education on the income, self-reported health and survival of people aged sixty-five and over in order to identify benefits resulting from education which are omitted in the conventional analysis with its focus on labour income excluding employer contributions. We find that well educated people enjoy substantially higher incomes and longer heal...

1998
Katherine M. Harris Michael P. Keane

In this paper, we model the elderly’s choice among health plans using data from a 1988 study of the Minneapolis—St. Paul Medicare health plan market. We show how attitudinal data can be combined with revealed preference data to provide more reliable estimates of consumers’ preferences for and perceptions of the attributes of choice alternatives. We develop an extended heterogeneous logit model ...

Journal: :Scientific reports 2016
Se H Kim Moon S Kim Bun Y Lee Pyung C Lee

Recent research interest in phytochemicals has consistently driven the efforts in the metabolic engineering field toward microbial production of various carotenoids. In spite of systematic studies, the possibility of using C30 carotenoids as biologically functional compounds has not been explored thus far. Here, we generated 13 novel structures of C30 carotenoids and one C35 carotenoid, includi...

2004
Florenz Plassmann John R. Lott

We investigate the relationships between gun ownership and murders, reported rapes, and robberies. We proxy gun ownership by the number of subscriptions to the gun magazine Handguns Magazine and accommodate the count nature of our data by analyzing them with a multivariate Poisson-lognormal model. For most of our analyses, we find that the correlation between today’s number of guns and future c...

2010
James Mitchell Richard J. Smith Martin R. Weale

Qualitative business survey data are used widely to provide indicators of economic activity ahead of the publication of official data. Traditional indicators exploit only aggregate survey information, namely the proportions of respondents who report “up” and “down”. This paper examines disaggregate or firm-level survey responses. It considers how the responses of the individual firms should be ...

علیرضا قاسم پور, غلامحسین ابراهیمی پور محمد یعقوبی آوینی,

 ظهور مقاومت هایدارویی در بین میکروارگانیسم های بیماریزا نشان دهنده نیاز به کشف آنتی بیوتیک هایجدید است. در جستجوی یک میکروارگانیسم تولید کننده ماده ضد میکروبی جدید از خاکهای آلوده به نفت اطراف دزفول یک سویه subsp. faecalis Alcaligenes faecalis  جداسازی گردید. عوامل موثردر تولید ماده ضد میکروبی به روش یک فاکتور در هر زمان تعیین گردید که بر اساس آن بهترتیب 9 pH =، دما °C35، % 34/0NH4Cl، % 2 استا...

2000
Christian Dustmann Oliver Kirchkamp

If migrants return to their origin countries, two questions arise which are of immediate economic interest for both immigration and emigration country: what determines their optimal migration duration, and what are the activities migrants choose after a return. Little research has been devoted to these two issues. This paper utilises a unique survey data set which records activities of returned...

2014
Adam Pilny Magdalena A. Stroka Thomas K. Bauer Wolfgang Leininger

Existing literature analyzing the choice of received long-term care by frail elderly (65+ years) predominantly focuses on physical and psychological conditions of elderly people as factors that infl uence the decision for a particular type of care. Until now, however, the regional in-patient long-term care supply has been neglected as infl uential factor in the individual’s decision-making proc...

2010
Massimiliano Bratti Alfonso Miranda

In this paper we propose a method to estimate models in which an endogenous dichotomous treatment affects a count outcome in the presence of either sample selection or endogenous participation using maximum simulated likelihood. We allow for the treatment to have an effect on both the sample selection or the participation rule and the main outcome. Applications of this model are frequent in man...

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