The coordinator role of trade credit contract for coordinating integrated pricing and periodic review inventory decisions with stochastic demand

Author(s):  
Maryam Johari ◽  
Seyyed-Mahdi Hosseini-Motlagh ◽  
Mohammadreza Nematollahi
Author(s):  
Elena A. Kosovan ◽  

The author of the publication reviews the photobook “Palimpsests”, published in 2018 in the publishing house “Ad Marginem Press” with the support of the Heinrich Böll Foundation. The book presents photos of post-Soviet cities taken by M. Sher. Preface, the author of which is the coordinator of the “Democracy” program of the Heinrich Böll Foundation in Russia N. Fatykhova, as well as articles by M. Trudolyubov and K. Bush, which accompany these photos, contain explanation of the peculiarities of urban space formation and patterns of its habitation in the Soviet Union times and in the post-Soviet period. The author of the publication highly appreciates the publication under review. Analyzing the photographic works of M. Sher and their interpretation undertaken in the articles, the author of the publication agrees with the main conclusions of N. Fatykhova, M. Trudolyubov and K. Bush with regards to the importance of the role of the state in the processes of urban development and urbanization in the Soviet and post-Soviet space, but points out that the second factor that has a key influence on these processes is ownership relations. The paper positively assesses the approach proposed by the authors of the photobook to the study of the post-Soviet city as an architectural and landscape palimpsest consisting mainly of two layers, “socialist” and “capitalist”. The author of the publication specifically emphasizes the importance of analyzing the archetypal component of this palimpsest, pointing out that the articles published in the reviewed book do not pay sufficient attention to this issue. Particular importance is attributed by the author to the issue of metageography of post-Soviet cities and meta-geographical approach to their exploration. Emphasizing that the urban palimpsest is a system of realities, each in turn including a multitude of ideas, meanings, symbols, and interpretations, the author points out that the photobook “Palimpsests” is actually an invitation to a scientific game with space, which should start a new direction in the study of post-Soviet urban space.


2012 ◽  
Vol 29 (01) ◽  
pp. 1240002 ◽  
Author(s):  
XIANGPEI HU ◽  
HUIMIN WANG ◽  
YUNZENG WANG

Costs of many items drop systematically throughout their life-cycles, due to advances in technology and competition. Motivated by the management of service parts for some high-tech products, this paper studies inventory decisions for such items. In a periodic review setting with stochastic demand, we model the purchasing costs of successive periods as a stochastic and decreasing sequence. Unit selling price of the item is determined as some mark-up of the purchasing cost and, hence, will change over time as well. We consider two specific mark-up models: (1) purchasing cost plus constant-dollar-amount mark-up, and (2) purchasing cost plus constant-percentage mark-up. To maximize the total discounted expected profit, we derive conditions under which myopic policies are optimal for the systems.


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