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The introduction of the 22 member countries of the 4+10+2+6 model of the Asian economy is the immediate task. Japan, Korea, China, India, Indonesia, the Philippines, Brunei Darussalam, Malaysia, Singapore, Thailand, Vietnam, Cambodia, Laos, and Myanmar constitute the now-famous 4+10 model. Following the principle of inclusion, Mongolia, Chinese Taipei, Bangladesh, Bhutan, Nepal, Pakistan, the Maldives, and Sri Lanka, as they belong to the regional map of the continent of Asia, are the eight remaining member countries (see Chapter 1). An overview of Asia's 22 member continental economy the AE-22, with its 3.6 billion people (2006) who have made the region of Asia their home in a land area of 20.5 million km² should be welcome. To put these figures in perspective, the AE-22 comprises only 13.7 percent of the world's land area, but is home to over half the world's population. Tables 2.1–2.4, presented below, illustrate the various figures relating to population, land area, GDP, and GDP per capita of the member nations of the AE-22.

There has long been a prevailing view concerning North Korea, officially known as the Democratic People’s Republic of Korea (DPRK), that the world’s most reclusive socialist state, in accordance with its “juche” (self-reliance) ideology,¹ shuns capitalism, and discourages entrepreneurship and innovation, and feigns reform to further its nuclear ambitions including the development of intercontinental ballistic missiles. Under its previous leaders, Kim Il Sung and his son, Kim Jong Il, the DPRK saw little need for and discouraged innovation in the financial sector, particularly that of Western origin. However, since coming to power in December 2011, its current leader, Kim Jong-Un, has placed a strong emphasis on entrepreneurship and innovation, in numerous sectors, including its financial system. Based on research and interviews conducted with international business and entrepreneurship experts that have trained North Koreans, and personal experience as an adjunct business faculty member in the DPRK, this research shows the recent developments including the role played by entrepreneurs in helping the DPRK achieve its goal of economic and technological transformation. The primary focus is on changes in the DPRK’s financial sector.

Comparing international history textbooks creates a perfect opportunity for students to see the complexity and controversy of history interpretation of certain events. Such a critical comparative approach helps students understand how people in different countries perceive and interpret the Korean War, its aftermath, and its effects on current international relation-ships. In this article, we suggest that teachers approach the Korean War and the Six-Party Talks in two ways: Six-Party Discussion Table motivation activities and analysis of middle school history textbook excerpts about the Korean War in the six countries. Detailed lesson plans and handouts are provided for teachers to facilitate these discussions. These include the directions and procedures for the activities, teachers' guide, suggested answers, textbook excerpts from the United States, and textbook excerpts translated into English China, Japan, Russia, North Korea, and South Korea.

The rotor system supported by the cylindrical roller bearings is widely used in various fields such as aviation, space and machinery due to its importance. In the study of the dynamic characteristics of the cylindrical roller bearings, it is important to accurately calculate the stiffness of the cylindrical roller bearings. The stiffness of the cylindrical roller bearings is very important in the analysis of the vibration characteristics of the rotor system. Therefore, in this paper, the method of creating a comprehensive stiffness model of the cylindrical roller bearing is mentioned. The purpose of this study is to improve the dynamic stability of the rotor system supported by the cylindrical roller bearing by accurately establishing the comprehensive stiffness calculation model of the cylindrical roller bearings.

In consideration of the radial clearance of the cylindrical roller bearing, the radial load acting on the cylindrical roller bearing was derived, and based on this, a model for calculating the Hertz contact stiffness of the cylindrical roller bearing was created. Based on the load considering the radial clearance, an oil film stiffness model of the cylindrical roller bearing was created under the elastohydrodynamic lubrication (EHL) theory. Then, the comprehensive stiffness was calculated by combining Hertz contact stiffness and the oil film stiffness of the cylindrical roller bearing, and the dynamic parameters are calculated by using the MATLAB program.

When the radial clearance of the cylindrical roller bearing is considered, the comprehensive stiffness is larger than when the radial clearance is not taken into account, and the radial clearance of the cylindrical roller bearing is an important factor that directly affects the comprehensive stiffness of the cylindrical roller bearing.

In this paper, based on Hertz contact theory and the EHL theory, the authors investigated the method of creating a comprehensive stiffness model of the cylindrical roller bearing considering the radial clearance. These results will contribute to the theoretical basis for studying the mechanics of cylindrical roller bearings and optimizing their structures, and they will provide an important theoretical basis for analyzing the dynamic characteristics of the rotor system supported by the cylindrical roller bearing.

The author provides us here with a rare and original testimony about the Democratic People’s Republic of Korea, from the trips he was able to make there and the many contacts he had there. He focuses the readers’ attention more particularly on his interpretation of Juche’s thinking, the principles of which contribute to find the development strategy of this country. The emphasis is primarily on the imperative of autonomy for the economy and the society.

As a core rotating component of power machinery and working machinery, the rotor system is widely used in the fields of machinery, electric power and aviation. When the system operates at high speed, the system stability is of great importance. To enhance the system stability, squeeze film damper (SFD) is being installed in the rotor system to alleviate vibration. The purpose of this paper is to first classify the rotor system into two types, the dual rotor system and the single rotor system, and to comprehensively and specifically mention the method of generating the dynamic model. Next, based on the establishment of a dynamic model with and without SFD in the rotor system, the optimization design of the rotor system with SFD was carried out using a genetic algorithm. Through sensitivity analysis, SFD clearance, shaft stiffness and oil viscosity were determined as design variables of the rotor system, and the objective function was the minimization of the maximum amplitude of the rotor system with SFD within the operation speed range.

In this paper, first, the rotor system was classified into two types, namely, the dual rotor system and the single rotor system, and the method of creating a dynamic model was comprehensively and specifically mentioned. Here, the dynamic model of the rotor system was derived in detail for the single rotor system and the dual rotor system with and without SFD. Next, based on the establishment of a dynamic model with and without SFD in the rotor system, the optimization design of the rotor system with SFD was carried out using a genetic algorithm. The sensitivity analysis of the unbalanced response was carried out to determine the design variables of the optimization design. Through sensitivity analysis, SFD clearance, shaft stiffness and oil viscosity were determined as design variables of the rotor system, and the objective function was the minimization of the maximum amplitude of the rotor system with SFD within the operation speed range.

SFD clearance, shaft stiffness and oil viscosity were determined as design variables of the rotor system through sensitivity analysis of the unbalanced response. These three variables are basic factors affecting the amplitude of the rotor system with SFD.

In the existing studies, only a dynamic model of a single rotor system with SFD was created, and the characteristic values of pure SFD were selected as optimization variables and optimization design was carried out. But in this study, the rotor system was classified into two types, namely, the dual rotor system and the single rotor system, and the method of creating a dynamic model was comprehensively and specifically mentioned. In addition, optimization design variables were selected and optimized design was performed through sensitivity analysis on the unbalanced response of factors affecting the vibration characteristics of the rotor system.