Sequences arise in many online and of-fline settings: urls to visit, songs to listento, videos to watch, restaurants to dine at,and so on. User-generated sequences aretightly related to mechanisms of choice,where a user must select one from a finiteset of alternatives. In this talk, we willsurvey a class of problems arising fromstudying such sequences and the rol...

We defined the Grothendieck groups KX and K0X. They are vector bundles, respectively coherent sheaves, modulo the relation [E] = [E ] + [E ]. We have a pullback on K: f : KX → KY. KX is a ring: [E] · [F] = [E ⊗ F]. We have a pushforward on K0: f∗[F ] = ∑ i≥0(−1) [Rf∗F ]. We obviously have a homomorphism KX → K0X. K0X is aK X-module: KX⊗K0X → X is given by [E] · [F ] = [E⊗ F ]. Unproved fact: If...

1.1. Crash course in blowing up. Last time I began to talk about blowing up. Let X be a scheme, and I ⊂ OX a sheaf of ideals on X. (Technical requirement automatically satisfied in our situation: I should be a coherent sheaf, i.e. finitely generated.) Here is the “universal property” definition of blowing-up. Then the blow-up of OX along I is a morphism π : X̃ → X satisfying the following univer...

Business failure belongs to the most investigated topics in the business literature (Huang et al. (2008)). A plethora of works have addressed the problem using conventional statistical or machine learning techniques that are known to suffer from distributional assumptions, representational bias, statistical inconsistencies or over-fitting in generalization, and therefore bring results that have...

Bu makale hadislerin tarihlendirilmesinde yaygın bir şekilde kullanılan “müşterek ravi” teorisinin eleştirisini konu edinir. Schacht tarafından geliştirilen ve özellikle hukukî rivayetlere uygulanan bu teorinin doğruluk kapsayıcılığının test edilmesi amacıyla fiten rivayetleri arasından seçilen üç örneğe uygulanmıştır. bağlamda öncelikli olarak yazar “dış tarihlendirme” belirtilen yöntemle riva...

1 Access Control 3 Sabrina De Capitani di Vimercati, Pierangela Samarati, and Ravi Sandhu 1.

Vol. XLVII (December 2010), 1090 –1099 *Uzma Khan is Assistant Professor of Marketing, Graduate School of Business, Stanford University (e-mail: [email protected]). Ravi Dhar is George Rogers Clark Professor of Management and Marketing, Yale School of Management, Yale University (e-mail: [email protected]). The authors thank Nathan Novemsky, Zakary Tormala, Harikesh Nair, Jiwoong Shin, and...

A study of chromosomal analysis for 200 breeding bulls of different breeds of cattle (Jersey, Holstein Friesian, Sahiwal and Cross-bred) and Nili-Ravi buffalo, maintained at Semen Production Unit, Qadirabad and Livestock Experiment Station, Bhunikey (Pattoki) was carried out. Micromethod was adopted for leukocyte culture and chromosomes were trapped at metaphase stage. The diploid number of chr...