The Christian approach to Islam has been undergoing a period of flux during the last decade. As a reaction to the slow progress in Islam mission and the fragility of churches of converts from Islam, some missionaries have cast about for a new model of approach for the Muslims. An important feature of the new approach has been a quest for new forms that involve converts remaining within Islam. This has been called C5 ministry or “insiders movement.” This C5 ministry among the John Travis’ C1-C6 spectrum, which compares and contrasts types of “Christ-centered communities” found in the Muslim world(1998), has drawn fire from the other side of the missiologists. Phil Phashall considered C5 approach to represent a dangerous slide into syncretism. Although John Travis and Dean S. Gilliland responded on the criticism, that was the beginning of long arguments on the possibility, validity, and credibility of the C5, or insiders movement. These arguments can be divided into two categories: theological interpretation on the biblical references which have been used to support the C5 ministry and some missiological issues on definitions of the terminologies of C5 ministry as well as social-religious culture and identity of the insiders. Due to the limited space, the author focused on some missiological issues only. The author analyzed the missiological arguments by dividing them into four areas: degree of contextualization, possibility of using Islamic culture and religious forms, Christian identity, and ethical problem. Then the author showed how the arguments have been expanded more widely among the missiologists’ circle after 2006. At the end, the author concluded that the arguments are still in progress. The arguments have shown the positive possibilities of Islam mission and left some challenges. The challenges are lacking of MBB leaders’ participation in the course of the argument, the continuing quotations of Parshall’s statistics from the side of the opponents, the issue of the translation of some sensitive biblical expressions to Muslims such as “Son of God,” and theological exegesis and applications of the supporting biblical references of the proponents. However, I feel more deepened discussions needed in the future. C5 ministry will continue to grow, regardless of the process of these arguments, because of its dynamic characteristics. Thus, we need to show generous attitude to the process of their growth and focus on the direction of the group as well as the each individual of C5 movement. And everybody in the future arguments needs to remember that each argument should be a process to keep balance between theology and praxis in order to build Christ’s church.

The study deals with crisis of Latin America and diakonia mission strategy to deeply problems in Latin America society and culture in which problems have been formed historically in the colonialism context from Spanish and Portugal. In this paper, crisis of Latin America analyzes the economical, social, religious, cultural and political factors to the problems, and mention mission strategy of diakonia for the social transformation against problems and issues. First, I explained on the crisis of the economic, political, social, cultural and spiritual problem of Latin America, the paper describes the present difficult situation and its historical roots resulting from the time of the Spanish and Portugal’s colonialism. They have a lot of problems in Latin America society; such as poverty, violence, population explosion, lack of job, diseases, lack of foods, and illiteracy. Second, this paper suggest some diakonia mission strategies to be able to the change in Latin America. There are 1) diakonia mission strategy through Christianity NGO group; 2) social development mission toward poverty region and slum area; 3) holistic education mission strategy; 4) global partnership and cooperation mission for crises and problems of Latin America. Third, this study focus on holistic mission and social service mission in various Latin America contexts. International mission agency and Christian community in the world should be help and participate about problems and pains of Latin America. We need partnership and cooperation with between world Christianity and Latin America community.

This study focuses developing an effective mission strategy in a cyber culture to reach the new generation in Korea. It asks these important questions: "What are the barrier for the Korean churches in evangelism to the new generation?" "How can Korean churches change their Cyber culture in mission for the unchurched new generation?" In order to answer these questions, data was collected through questionnaires and interviews with members of the new generation in Korea. Both the characteristics of the new generation, and those of the emerging Cyber culture in Korea, were analyzed. Concerns for effective strategies of Korea church mission was an important issues in this study of how best to reach for Christ the Korean new generation. The writer's experience of mission in the Korean context led him to the strategy that the Korean churches need a multimedia mission approach using Cyber culture. Multimedia mission is a challenge for Korean churches seeking to reach the new generation. Korean churches need to be develop the mission strategies using multimedia appropriate for the Cyber culture of the new generation. Such multimedia must be part of an effective mission toward the new generation who embrace a Cyber culture.

This paper suggests a relative orbit control strategy for the CubeSat Astronomy by NASA and Yonsei using Virtual Telescope Alignment eXperiment (CANYVAL-X) mission whose main goal is to demonstrate an essential technique, which is an arrangement among two satellites and a specific celestial object, referred to as inertial alignment, for a next-generation virtual space telescope. The inertial alignment system is a relative orbit control system and has requirements for the relative state. Through the proposed orbit control strategy, consisting of separation, proximity keeping, and reconfiguration, the requirements will be satisfied. The separation direction of the two CubeSats with respect to the orbital plane is decided to provide advantageous initial condition to the orbit controller. Proximity keeping is accomplished by differential atmospheric drag control (DADC), which generates acceleration by changing the spacecraft’s effective cross section via attitude control rather than consuming propellant. Reconfiguration is performed to meet the requirements after proximity keeping. Numerical simulations show that the requirements can be satisfied by the relative orbit control strategy. Furthermore, through numerical simulations, it is demonstrated that the inertial alignment can be achieved. A beacon signal had been received for several months after the launch; however, we have lost the signal at present.

19세기에 중국에서 활동한 개신교 선교사들은 가톨릭교회의 선교에 비 해서 그들의 선교가 여러 측면에서 불리한 조건을 가지고 있었음을 인식하 였다. 그러므로 그들은 선교현장에서 의도적으로 개신교회가 ‘성서의 종교’ 임을 강조하고, 성서를 번역하는 일에 최우선 순위를 두었으며 성서를 보 급하는 일에 노력하였는데 이는 개신교 선교부의 가톨릭교회와의 차별화 전략에 속한다고 볼 수 있다. 가톨릭교회가 초기에는 ‘선교보호권’(宣敎保 護權)을 중심으로, 1622년부터는 포교성성(布敎聖省)을 중심으로 하여 국 가 및 교황청을 중심으로 하여 아시아 및 중국선교를 수행하였던 것과는 달리 개신교 선교사들은 대체적으로 자발적 선교회 등을 중심으로 하여 국 가 또는 강력한 교회중심체제로부터 벗어나 선교를 수행하였다. 일부의 현 상이나마, 가톨릭교회가 기독교를 선점한 중국에서 그리고 당시 직접적 복 음전도의 자유가 없던 중국에서 개신교 선교사들의 최선의 전략은 성서원 문으로부터의 성서번역과 보급이었으며 이는 종교개혁의 후예로서 자신들 의 정체성과도 일치하는 일이었다. 로버트 모리슨의 번역본을 시작으로 첫 100여년동안 8개의 다른 중국어번역본을 출판한 개신교의 열정이 그들의 성서에 대한 관심을 증거한다. 그러나, 대립되는 성서판본을 출판할 수밖에 없었던 개신교회의 불일치성은 오늘날 진지한 성찰을 요구하기도 한다.

In this paper, a brief but essential development strategy for the lunar orbit determination system is discussed to prepare for the future Korea’s lunar missions. Prior to the discussion of this preliminary development strategy, technical models of foreign agencies for the lunar orbit determination system, tracking networks to measure the orbit, and collaborative efforts to verify system performance are reviewed in detail with a short summary of their lunar mission history. Covered foreign agencies are European Space Agency, Japan Aerospace Exploration Agency, Indian Space Research Organization and China National Space Administration. Based on the lessons from their experiences, the preliminary development strategy for Korea’s future lunar orbit determination system is discussed with regard to the core technical issues of dynamic modeling, numerical integration, measurement modeling, estimation method, measurement system as well as appropriate data formatting for the interoperability among foreign agencies. Although only the preliminary development strategy has been discussed through this work, the proposed strategy will aid the Korean astronautical society while on the development phase of the future Korea’s own lunar orbit determination system. Also, it is expected that further detailed system requirements or technical development strategies could be designed or established based on the current discussions.