Publikationen deutschsprachiger Forscher in?Top-Journals (3. Quartal 2010)

Aktuelle Publikationen

Publikationen deutschsprachiger Forscher in Top-Journals (3. Quartal 2010)     

On Becoming a Statistician—A Qualitative View

In this paper, we highlight some qualitative facets of the discipline of statistics and argue that a qualitative approach, in particular a qualitative methodology known as phenomenography, allows us to research important aspects of statistics pedagogy. We summarize several components of our recent research into students' conceptions of statistics, their learning of statistics, our teaching of statistics, and their perceptions of their future professional work. We have obtained this information on the basis of analyses of several series of interviews with students studying statistics, both as statistics majors and as service students. In each of these cases, the broadest views relate in some way to personal connection, growth, and change. In other words, they contain a strong ontological component—focusing on being or becoming a statistician—above and beyond the standard epistemological component—focusing on the knowledge required to do statistics. We discuss the importance of personal change in becoming a statistician, or an informed professional user of statistics, and investigate the pedagogical conditions under which such change is likely to occur.     

Qualitative Input–Output Analysis of the Indian Economic Structure

Qualitative input–output (IO) analysis can be considered mostly in terms of a graph-theoretic formulation, which involves the construction and use of an adjacency matrix, derived from a binary transformation of the IO coefficient matrix. Classical attempts at qualitative IO analysis have derived the structure from the direct IO coefficient table. In more recent attempts, greater sophistication has been achieved by incorporating a degree of quantification into the qualitative analysis. Also, the concept of important coefficients (IC) has been used for the construction of the adjacency matrix. The present study is carried out along these lines for the Indian economy.     

Simultan stärkste unverfälschte Tests

Ohne Zusammenfassung     

Mittelwerte und ihre Schätzfunktionen bei zirkulären zufälligen Variablen

Zusammenfassung Für zuf?llige Winkel oder, anders ausgedrückt, zuf?llige Variable mit Werten auf den Einheitskreis wird mit Hilfe einer allgemeinen Verlustfunktion ein Mittelwert definiert und eine konsistente Sch?tzfunktion angegeben. Dabei wird eine Invarianzbedingung beachtet, die die freie W?hlbarkeit des Anfangspunktes der Winkelmessung berücksichtigt. Mittelwert und Sch?tzfunktion werden für drei spezielle Verlustfunktionen genauer untersucht.

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Summary Using a general loss function, a mean value is defined for random angles or random variables with values on the unit circle. A consistent estimator is given. For the mean and the estimator an invariance condition is taken into consideration regarding that the initial line of the angle may be choosen at liberty. A particular research follows for three special loss functions.

     

Kapitalkostenermittlung – von unverzerrten Schätzern und ­Länderrisikoprämien

PRAXIS | Artikel

Kapitalkostenermittlung – von unverzerrten Sch?tzern und -L?nderrisikopr?mien Dirk Hachmeister/Frederik Ruthardt/Maximilian R?mhild     

足文字D：试驾荣威350D

在我们为国内的汽车品牌归类时．荣威是被归为自主品牌之到的。其实,准确的说,荣威应该算是一个国际化的中国品牌。荣威品牌于2006年诞生于上汽集团,但其汽车技术却来源于上汽集团之前收购的英国汽车“罗孚Rover”。     

尼康全球同步推出D7100、D600

7月18日,2013年中国政府采购高峰论坛成功举办。尼康映像仪器销售（中国）有限公司作为供应商代表出席本次论坛并参与交流,并带来自己的新产品D600-D7100。会上尼康客户事业推进总部摄影技术支持部刘毅经理重点介绍发这两款明星产品。     

4D领导力

领导力足立体的,不是单而的;相对而论,强有力的领导者存患炽到全维度领导力需求的时候,不只是按照自己的喜好去完成领导力的迎没,也能按照领导力的需要补足自己的不足。领导力的长度：领导者需耍具有对于行业、形势与关键要素发展的长远项期,并建立有自己适当的预测系统,从而能够对于组织与运动的发展方向做出负有远见的判断。