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The second central limit theorem for martingale difference arrays
배종식,전두배,Shlomo Levental 대한수학회 2014 대한수학회보 Vol.51 No.2
In Bae et al. [2], we have considered the uniform CLT for the martingale difference arrays under the uniformly integrable entropy. In this paper, we prove the same problem under the bracketing entropy condition. The proofs are based on Freedman inequality combined with a chaining argument that utilizes majorizing measures. The results of present paper generalize those for a sequence of stationary martingale differences. The results also generalize independent problems.
THE UNIFORM CLT FOR MARTINGALE DIFFERENCE ARRAYS UNDER THE UNIFORMLY INTEGRABLE ENTROPY
배종식,전두배,Shlomo Levental 대한수학회 2010 대한수학회보 Vol.47 No.1
In this paper we consider the uniform central limit theorem for a martingale-difference array of a function-indexed stochastic process under the uniformly integrable entropy condition. We prove a maximal inequality for martingale-difference arrays of process indexed by a class of measurable functions by a method as Ziegler [19] did for triangular arrays of row wise independent process. The main tools are the Freedman inequality for the martingale-difference and a sub-Gaussian inequality based on the restricted chaining. The results of present paper generalizes those of Ziegler [19] and other results of independent problems. The results also generalizes those of Bae and Choi [3] to martingale-difference array of a function-indexed stochastic process. Finally, an application to classes of functions changing with n is given.
Exporting versus Foreign Direct Investment
( Shabtai Donnenfeld ),( Shlomo Weber ) 세종대학교 경제통합연구소 (구 세종대학교 국제경제연구소) 2000 Journal of Economic Integration Vol.15 No.1
In this paper we investigate how strategic aspects influence the choice between exporting and servicing foreign markets by setting up a plant in the foreign country. We show that tariffs on imports in conjunction with the size of the set up costs incurred while setting up plants and the size of the foreign market will determine whether domestic firms which face competition from a foreign firm will choose to deter foreign direct investment (FDI), prevent exports or may accommodate either form of penetration of a foreign firm in their market. Our analysis reveals that there is no simple relationship between the size of the tariff and the propensity of foreign firms to engage in foreign direct investment. Higher tariffs may result in exports rather than FDI. Furthermore, due to actual competition among domestic firms while facing potential competition in the form of FDI, a rise in tariffs may lead to a decrease in domestic output. (JEL Classifications: F12, F21)
USN applied to Smart Cold Chain based on the mesh wireless sensor network
Chul Rhee,Shlomo Berkovitch,Yaron Kaufmann,David Wiseman 대한산업공학회 2011 대한산업공학회 춘계학술대회논문집 Vol.2011 No.5
USN, or wireless sensor network, is applied for the real time monitoring for the Supply Chain Industry, starting from the Cold Chain Monitoring (CCM) needs, such as shipments of Fruits & Vegetables, Meat and Medicines. There are a number of different terms related or used in conjunction with the WSN. These are ISM, RFID, GPS, CCM, DASH7 Alliance, ISO18000-7, ZigBee Alliance, IEEE 802.15.4, ZWave WPAN, Wi-Fi, Bluetooth and many, many more. The subject of the WSN is quite a clear, intuitive and simple concept. It goes to the tracing and monitoring of what is needed and possible ?devices, things, living, plants, environment, etc. CartaSense developed the system that enables the customer to take decisions based on: ? Affordable sensors to track and collect ongoing transportation data such as temperature, Humidity and pressure conditions ? Reliable communication with a gateway even in humid and harsh conditions (where regular RF would hardly work) ? Proprietary software to analyze the data and prediction of expected expiration or ripe dates. Major issues and problems in this application which can be accessed by the management science and industrial engineering are analyzed and discussed.
USN applied to Smart Cold Chain based on the mesh wireless sensor network
Chul Rhee,Shlomo Berkovitch,Yaron Kaufmann,David Wiseman 한국경영과학회 2011 한국경영과학회 학술대회논문집 Vol.2011 No.5
USN, or wireless sensor network, is applied for the real time monitoring for the Supply Chain Industry, starting from the Cold Chain Monitoring (CCM) needs, such as shipments of Fruits & Vegetables, Meat and Medicines. There are a number of different terms related or used in conjunction with the WSN. These are ISM, RFID, GPS, CCM, DASH7 Alliance, ISO18000-7, ZigBee Alliance, IEEE 802.15.4, ZWave WPAN, Wi-Fi, Bluetooth and many, many more. The subject of the WSN is quite a clear, intuitive and simple concept. It goes to the tracing and monitoring of what is needed and possible ?devices, things, living, plants, environment, etc. CartaSense developed the system that enables the customer to take decisions based on: ? Affordable sensors to track and collect ongoing transportation data such as temperature, Humidity and pressure conditions ? Reliable communication with a gateway even in humid and harsh conditions (where regular RF would hardly work) ? Proprietary software to analyze the data and prediction of expected expiration or ripe dates. Major issues and problems in this application which can be accessed by the management science and industrial engineering are analyzed and discussed.
Exporting versus Foreign Direct Investment
Donnenfeld, Shabtai,Weber, Shlomo 세종대학교 국제경제연구소 2000 Journal of Economic Integration Vol.15 No.1
In this paper we investigate how strategic aspects influence the choice between exporting and servicing foreign markets by setting up a plant in the foreign country. We show that tariffs on imports in conjunction with the size of the set up costs incurred while setting up plants and the size of the foreign market will determine whether domestic firms which face competition from a foreign firm will choose to deter foreign direct investment(FDI), prevent exports or may accommodate either form of pentration of a foreign firm in their market. Our analysis reveals that there is no simple relationship between the size of the tariff and the propensity of foreign firms to engage in foreign direct investment. Higher tariffs may result in exports rather than FDI. Furthermore, due to actual competition among domestic firms while facing potential competition in the form of FDI, a rise in tariffs may lead to a decrease in domestic output. (JEL Classifications: F12, F21)