Hypersurfaces of Prescribed Gauss Curvature in Exterior Domains

We prove an existence theorem for convex hypersurfaces of prescribed Gauss curvature in the complement of a compact set in Euclidean space which are close to a cone.Comment: 15 pages, LaTeX (published version

Community indentification in peer-t-peer collaborative consumption services

Even though collaborative consumption (CC) is gaining economic importance, research in CC is still in its infancy. Consumers’ reasons for participating have already been investigated but little research on consequences of participation has been conducted. This article examines whether interactions between customers in peer-to-peer CC services influence the willingness to coproduce service outcomes. Drawing on social exchange theory, it is proposed that this effect is mediated by consumers’ identification with the brand community. Furthermore, continuance intention in CC is introduced as a second stage moderator. In a cross-sectional study, customers of peer-to-peer accommodation sharing are surveyed. While customer-to-customer interactions were found to have a positive effect on brand community identification, brand community identification did not positively affect co-production intention. Surprisingly, the effect of brand community identification on co-production intention was negative. Moreover, continuance intention of customers did not moderate this relationship. Bearing in mind current challenges for researchers and companies, theoretical and managerial implications are discussed

15 Years collaboration between SSTC NRS (Ukraine) and ISTec (GRS) in NPP I&C area

Collaboration between the Institute for Safety Technology (ISTec) from Germany and the State Scientific Technical Center on Nuclear and Radiation Safety (SSTC NRS) from Ukraine has been performed for about 15 years. The main topics of cooperation have been assessment and qualification of digital safety I&C systems for NPP, licensing of those systems and elaboration of standards and guidelines for the licensing processes mentioned above. The paper gives a brief overview about the activities and results of the collaboration.Співпраця Інституту технологій безпеки (Німеччина) та Державного науково- технічного центру з ядерної та радіаційної безпеки (Україна) триває протягом 15 років. Основними напряма-ми співпраці є оцінка і кваліфікація цифрових інформаційних та ке-руючих систем АЕС, ліцензування цих систем і розробка стандартів та керівництв для ліцензування. Стаття містить короткий огляд цієї діяльності та її результатів.Сотрудничество Института технологий безопасности (Германия) и Государственного научно-технического центра по ядерной и радиационной безопасности (Украина) продолжается в течение 15 лет. Основными направлениями сотрудничества являются оценка и квалификация цифровых информационных и управляющих систем АЭС, лицензирование этих систем и разработка стандартов и руководств для лицензирования. Статья содержит краткий обзор этой деятельности и ее результатов