• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.42 no.2
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• pp.181-190
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• 2014

The optimized flight path planning which is appropriate for UAV operation with high performance and multiplex sensors is required for efficient ISR missions. Furthermore, a mission visualization tool is necessary for the assessment of MoE(Measures of Effectiveness) prior to mission operation and the urgent tactical decision in peace time and wartime. A mission visualization and analysis tool was developed by combining STK and MATLAB, whose tool was used for UAV ISR mission analyses in this study. In this mission analysis tool, obstacle avoidance and FoM(Figure of Merit) analysis algorithms were applied to enable the optimized mission planning.

• Journal of the Korean Applied Science and Technology
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• v.37 no.4
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• pp.986-995
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• 2020

The purpose of this study is to find out about unknown golf activities through sociological analysis based on the relationship between King Youngchin's life in Japan and the people around him. The following conclusions were drawn. King Youngchin was influenced by the Japanese imperial family to learn golf for the first time in 1924, and participated in golf tournaments in 1925. In 1927, during a one-year European tour, he participated in golf games in Singapore, Paris, Switzerland, England, Belgium, the Netherlands, and Italy, as well as golf course tours, golf lessons, and visiting golf ball manufacturing factories. After returning from Europe, he provided support for the site of Gyeongseong Gunjari Golf Course, construction and operation expenses. However, he did not show any special golf activities during his life as a high class Japanese military officer, and after the Pacific War, he could not find any more golf activities due to social conditions and economic conditions such as wartime restoration. There were no more golf activities due to health problems from 1958.

• The Journal of the Korea Contents Association
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• v.18 no.7
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• pp.577-589
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• 2018

The future of ROK-US alliance has not been discussed in detail by both governments since early 2000s. However, it is becoming more apparent that ROK-US alliance is facing various daunting challenges. The new administrations both in ROK and US might have different perspectives about the future of alliance. In the process of resolving outstanding North Korean nuclear issue, the alliance can face challenges to change its fundamental features such as halting joint military exercise. ROK-US governments also agreed to transfer wartime operational control as soon as possible. All those factors indicates the growing necessity to articulate the future of ROK-US alliance. ROK and US needs to facilitate to dialogue for future alliance with the possible scenarios of changing security environment such as maintaining status quo, reconciliation of North and South Korea, and entering the reunification stage. In each phase, ROK-US has to develop the goal for the alliance, military institution to implement the alliance, role of USFK, and etc. It is imperative to develop the road map for future ROK-US alliance at this stage to avoid unnecessary folly.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.40 no.1
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• pp.11-21
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• 2017

Artillery fire power due to effectiveness which is hard to predict well-planned and surprising attack can give a fear and shock to the personnel and is a very core weapon system and takes a critical role in wartime. Therefore in order to maximize operational effectiveness, Army required protecting artillery and takes a quick attack action through rapid construction of artillery's positions. The artillery use artillery's position to prevent exposure by moving to other position frequently. They have to move and construct at new artillery's positions quickly against exposing existed place by foe's recognition. These positions should be built by not manpower but engineering construction equipment. Because artillery positions have to protect human and artillery equipment well and build quickly. Military engineering battalion have lots of construction equipment which include excavator, loader, dozer, combat multi-purposed excavator, armored combat earthmover dump truck and so on. So they have to decide to optimal number of Team combining these equipments and determine construction sequence of artillery's position in operational plan. In this research, we propose to decide number of Team efficiently and allocate required construction's positions for each Team under constraints of limited equipments and time. To do so, we develop efficient heuristic method which can give near optimal solution and be applied to various situation including commander's intention, artillery position's priority or grouping etc. This heuristic can support quick and flexible construction plan of artillery positions not only for using various composition's equipment to organize Teams but also for changing quantity of positions.

• Journal of architectural history
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• v.15 no.5
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• pp.19-39
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• 2006

This study deals with construction contract bid-rigging by Japanese contractors who monopolized the construction market of the Korean Peninsula during the Japanese colonial rule, and investigates the abuses of the contract bid-rigging. First of all, construction contract bid-rigging in Korea was triggered by Japanese construction contractors and contract brokers, who had savored the benefits of bidrigging in Japan and had repeated the bid-rigging in Korea since 1903. Second, the agency played a significant role to mediate construction contractors, and existed throughout the Japanese colonial rule on the Korean Peninsula with changing their names. Most of them were engaged in major contract bid-rigging scandals. Among them was Construction Association of Korea, which existed for over 13 years. The agencies had took part in governmental services since the mid-1930s when Japan exploited Korean people during wartime, and focused on sweating human resources for the constructions. Third, one of the biggest construction bid-rigging scandals during the Japanese colonial rule was "the 1st and 2nd scandal on Daegu construction contract bid-rigging." Indeed, the second scandal paved the way for the serial scandals: "Kyeongseong construction contract bid-rigging scandal", "Busan construction contract bid-rigging scandal", and other cases throughout the nation. Fourth, along with the contract bid-rigging cases related to the Japanese Government-General of Korea and local authorities, bid-riggings firmly took rooted in local governments' farmland reclamation projects in the 1920s and the poor relief services in the 1930s. The "bid-rigging charges" forced contractors to compensate their losses with exploiting material costs and labor costs, generating serious problems. The construction contract bid-rigging enabled Japan to monopolize the construction industry and to sweat farmers on the Korean Peninsula. Against this backdrop, contract bid-rigging by Japanese construction contractors during the its colonization made Korean contractors ruled out, and helped Japanese monopolize the industry. A large amount of bid-rigging charges drove Japanese contractors to do fraudulent work with cheap materials and to exploit Korean labor force.

• Journal of the Korea Institute of Building Construction
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• v.14 no.6
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• pp.545-550
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• 2014

The re-locatable military facilities are significant in combat zones with limited infrastructures. Military tents are particularly one of the most essential components in the battlefields, During the offensive operation. This study assesses educational effectiveness of the 4D Building Information Modeling (BIM), which is used to deliver educational information with considering re-locatable military facility construction. Furthermore, the real time for constructing temporary concentration camp was measured, By using analysis of variance associated with the educational effects of the 4D BIM. Statistically, understandability of facility construction using 4D BIM was found to be higher than the conventional educational materials with field manual.

• Journal of the Korean Society of Costume
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• v.63 no.7
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• pp.94-108
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• 2013

This study is about the armors that high navy officers of Joseon wore during the period of Japanese invasion of Korea(1592~1598). The kinds of armors that these officers wore during this period are Sueungap, cheolgap, pigap, jigap and myeongap. Sueungap, cheolgap, pigap are all described in literatures, which were released in that period and the early Joseon period. According to publications that were released during that period, Yuyeopgap was a type of an iron armor. Armors that are recorded in only literatures published in the early Joseon period include swaejagap, gyeongbeongap, dujeonggap, hwangdongdujeonggap and dudumigap. Myeongap is found only in publications that were made in the above war time. The styles of armors are largely classified into chalgap and dujeonggap. The chalgap-styled armors used gapchal as their main component. Dujeonggap-styled armors used fabrics and dujeong. The names and the manufacturing methods of the gapchal did not changed since its creation in the early Joseon period until the above wartime. But, their shapes were considerably changed between the two times. This is clearly shown in armors that were found in the moat of the Dongrae-eup fortress. Dujeonggap-styled armors that were used during the period of the Japan-Korea war were a successor to those of dujeonggap-styled armors of the early Joseon period. But the former armors were different from the latter in that they had no gapchal inside. They are well represented by Jeong Chung Sin's armor.

• Journal of National Security and Military Science
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• s.7
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• pp.1-24
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• 2009

This article deals with military thought in general. First I tried to distinguish 'thought' from 'theory', 'philosophy', and 'principle'. Thought means the act of thinking about or considering something, an idea or opinion, or a set of ideas about a particular subject, e.g. military affairs in the present discussion. Theory means a formal statement of the rules on which a subject of study is based or of ideas which are suggested to explain a fact or event or, more generally, an opinion or explanation. Philosophy means the use of reason in understanding such things as the nature of reality and existence, the use and limits of knowledge. Principle means a basic idea or rule that explains or controls how something happens or works. Chapter 3 summarized the characteristics of military thoughts into five points', (i) it is closely related with concrete experiences of a nation; (ii) it includes philosophical and logical arguments; (iii) it relies heavily on the political thought of a nation; (iv) it includes necessarily value-judgments; (v) it contains visions of a nation which are not only descriptions or explanations of military affairs, but also evaluations and advocacies. Chapter 4 considers the relation of international political thoughts to military thought. Throughout the history of the modem states system there have been three competing traditions of thought: the Hobbesian or realist tradition, which views international politics as a state of war; the Kantian or universalist tradition, which sees at work in international politics a potential community of mankind; and the Grotian or internationalist tradition, which views international politics as taking place within an international society. Chapter 5 considers the law of war, which is a body of law concerning acceptable justifications to engage in war (jus ad bellum) and the limits to acceptable wartime conduct (jus in bello). Among other issues, modem laws of war address declarations of war, acceptance of surrender and the treatment of prisoners of war, military necessity along with distinction and proportionality, and the prohibition of certain weapons that may cause unnecessary suffering.

• Journal of Korean Medical classics
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• v.23 no.1
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• pp.31-46
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• 2010

This research is aimed at contriving to expand to its base on the research work Military medicine in East Asia by introducing GunjungUihak(means Military medicine) and adding translations and commentaries to it and propagating to academic circles. GunjungUihak is the only technical book on GunjungUihak which was written for the purpose of treating soldiers in time of war. One of the characteristics shown in its prescription is convenience in medical treatment; the writer of GunjungUihak Wangmyeonghak(王鳴學) edited pills and a powdered medicine to be prescribed in large proportions so that they could be used urgently in the situation of battles at a viewpoint of a general while collecting knowledge of medicine. In addition, this book is compiled with a very short edition with one volume and 18 units. Including only a little amount in the book means that it was compiled by extracting only the contents needed in preparation for the wartime emergency, and such a measure was taken for military surgeons to carry it with facility during the time of war. In addition, much weight of this book was given to the diseases caused by environment with which soldiers came in contact in time of combat, not the wounds by the weapons of war as specified from the beginning of the book, which suggests that the environmental factor of the friendly forces was much more threatening than the arms of enemy troops in the situation of a combat. Like this, GunjungUihak is a material of great value in that it is showing a model of the aspects of Military medicine in East Asia at that time even in its fragmentary writings and it has been preserved by Korea.

• Journal of the military operations research society of Korea
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• v.35 no.3
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• pp.17-30
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• 2009

In this study, we propose the operational availability computation model that can be used on the weapon system's requirement planning phase. The proposed model consists of the time parameters of Ao(Operational Availability) for a system and each time parameter's estimation method. The time parameters for Ao computation are TT(Total Time) and TDT(Total Down Time). The time parameters are defined by considering OMS/MP(Operational Mode Summary/Mission Profile) elements. TT is a calendar time as a specific mission time at wartime or one year at peacetime. TDT consists of TPM(Total Preventive Maintenance time), TCM (Total Corrective maintenance time), TALDT(Total Administrative and Logistics Down Time). Then the estimation method for these time parameters are presented by the weapon systems types.