MONOPOL NAD ROBOM S PROSTORNIM ODRŽAVANJEM

This study addresses the effects of monopolistic firms\u27 location and guarantee time limit on pricing for goods requiring high maintenance expenditure, such as elevators, televisions and computers. A spatial maintenance model of two stages within a guaranteed time limit is outlined in this paper. Based on this model, location, maintenance commitment and pricing are all characterized under a monopoly situation. This paper outlines the optimal price and location for the monopolist. The effects of guarantee time limit on price are discussed.Ovaj rad se bavi efektima koje lokacija i vremensko ograničenje garancije u monopolističkim tvrtkama imaju na formiranje cijena robe koja zahtijeva visoke troškove održavanja, kao što su liftovi, televizori i kompjuteri. U ovom radu iznosimo model prostornog održavanja u dva stupnja unutar garantiranog vremenskog ograničenja. Na osnovu ovog modela, lokacija, obveza održavanja i formiranje cijena se sve određuju u situaciji monopola. Rad donosi optimalne cijene i lokacije za monopolistu. Raspravlja se i o učincima vremenskog ograničenja garancije na cijenu

Two Roads Diverged: A Semantic Network Analysis of Guanxi on Twitter

Guanxi, roughly translated as "social connection", is a term commonly used in the Chinese language. In this research, we employed a linguistic approach to explore popular discourses on Guanxi. Although sharing the same Confucian roots, Chinese communities inside and outside Mainland China have undergone different historical trajectories. Hence, we took a comparative approach to examine guanxi in Mainland China and in Taiwan, Hong Kong, and Macau (TW-HK-M). Comparing guanxi discourses in two Chinese societies aims at revealing the divergence of guanxi culture. The data for this research were collected on Twitter over a three-week period by searching tweets containing guanxi written in Simplified Chinese characters and in Traditional Chinese characters. After building, visualising, and conducting community detection on both semantic networks, two guanxi discourses were then compared in terms of their major concept sub-communities. This research aims at addressing two questions: Has the meaning of guanxi transformed in contemporary Chinese societies? And how do different socio-economic configurations affect the practice of guanxi? Results suggest that guanxi in interpersonal relationships has adapted to a new family structure in both Chinese societies. In addition, the practice of guanxi in business varies in Mainland China and in TW-HK-M. Furthermore, an extended domain was identified where guanxi is used in a macro-level discussion of state relations. Network representations of the guanxi discourses enabled reification of the concept and shed lights on the understanding of social connections and social orders in contemporary China.Comment: under review. 29 pages + supplementary informatio

Universal impurity-induced bound state in topological superfluids

We predict a universal mid-gap bound state in topological superfluids, induced by either non-magnetic or magnetic impurities in the strong scattering limit. This universal state is similar to the lowest-energy Caroli-de Gennes-Martricon bound state in a vortex core, but is bound to localized impurities. We argue that the observation of such a universal bound state can be a clear signature for identifying topological superfluids. We theoretically examine our argument for a spin-orbit coupled ultracold atomic Fermi gas trapped in a two-dimensional harmonic potential, by performing extensive self-consistent calculations within the mean-field Bogoliubov-de Gennes theory. A realistic scenario for observing universal bound state in ultracold $^{40}$K atoms is proposed.Comment: 5 pages + 4 figures; published in PRL; see the relevant study in 1D: Phys. Rev. A 87, 013622 (2013); see also the accompanying Physics Synopsis: http://physics.aps.org/synopsis-for/10.1103/PhysRevLett.110.02040