• Korean Journal of Environment and Ecology
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• v.35 no.2
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• pp.135-153
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• 2021

The demilitarized zone (DMZ) is a border barrier with 248 kilometers in length and about 4 kilometers in width crossing east to west to divide the Korean Peninsula about in half. The boundary at 2 kilometers to the south is called the southern limit line. The DMZ has formed a unique ecosystem through a natural ecological succession after the Armistice Agreement and has high conservation value. However, the use of facilities for the military operation and the unchecked weeding often damage the areas in the vicinities of the southern limit line's iron-railing. This study aimed to prepare basic data for the restoration of damaged barren vegetation. As a result of classifying vegetation communities based on indicator species, 10 communities were identified as follows: Duchesnea indica Community, Hosta longipes Community, Sedum kamtschaticum-Sedum sarmentosum Community, Potentilla anemonefolia Community, Potentilla fragarioides var. major Community, Prunella vulgaris var. lilacina Community, Dendranthema zawadskii var. latilobum-Carex lanceolata Community, Dendranthema zawadskii Community, Plantago asiatica-Trifolium repens Community, and Ixeris stolonifera-Kummerowia striata Community. Highly adaptable species can characterize vegetation in barren areas to environment disturbances because artificial disturbances such as soil erosion, soil compaction, topography change, and forest fires caused by military activities frequently occur in the barren areas within the southern limit line. Most of the dominant species in the communities are composed of plants that are commonly found in the roads, roadsides, bare soil, damaged areas, and grasslands throughout South Korea. Currently, the vegetation in barren areas in the vicinities of the DMZ is in the early ecological succession form that develops from bare soil to herbaceous vegetation. Since dominant species distributed in barren land can grow naturally without special maintenance and management, the data can be useful for future restoration material development or species selection.

• Korean Journal of Remote Sensing
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• v.37 no.3
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• pp.603-614
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• 2021

Recently, the surface temperature in the seas around Korea has been continuously rising. This temperature rise causes changes in fishery resources and affects leisure activities such as fishing. In particular, high temperatures lead to the occurrence of red tides, causing severe damage to ocean industries such as aquaculture. Meanwhile, changes in sea temperature are closely related to military operation to detect submarines. This is because the degree of diffraction, refraction, or reflection of sound waves used to detect submarines varies depending on the ocean mixed layer. Currently, research on the prediction of changes in sea water temperature is being actively conducted. However, existing research is focused on predicting only the surface temperature of the ocean, so it is difficult to identify fishery resources according to depth and apply them to military operations such as submarine detection. Therefore, in this study, we predicted the temperature of the ocean mixed layer at a depth of 38m by using temperature data for each water depth in the upper mixed layer and meteorological data such as temperature, atmospheric pressure, and sunlight that are related to the surface temperature. The data used are meteorological data and sea temperature data by water depth observed from 2016 to 2020 at the IEODO Ocean Research Station. In order to increase the accuracy and efficiency of prediction, LSTM (Long Short-Term Memory), which is known to be suitable for time series data among deep learning techniques, was used. As a result of the experiment, in the daily prediction, the RMSE (Root Mean Square Error) of the model using temperature, atmospheric pressure, and sunlight data together was 0.473. On the other hand, the RMSE of the model using only the surface temperature was 0.631. These results confirm that the model using meteorological data together shows better performance in predicting the temperature of the upper ocean mixed layer.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.29 no.5A
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• pp.557-564
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• 2009

In recent years, there have been numerous explosion-related accidents due to military and terrorist activities. Such incidents caused not only damages to structures but also human casualties, especially in urban areas. To protect structures and save human lives against explosion accidents, better understanding of the explosion effect on structures is needed. In an explosion, the blast overpressure is applied to concrete structures as an impulsive load of extremely short duration with very high pressure and heat. Generally, concrete is known to have a relatively high blast resistance compared to other construction materials. However, information and test results related to the blast experiment of internal and external have been limited due to military and national security reasons. Therefore, in this paper, to evaluate blast effect on reinforced have concrete structure and its protective performance, blast tests are carried out with $1.0m{\times}1.0m{\times}150mm$ reinforce concrete slab structure at the Agency for Defence Development. The standoff blast distance is 1.5 m and the preliminary tests consists with TNT 9 lbs and TNT 35 lbs and the main tests used ANFO 35 lbs. It is the first ever blast experiment for nonmilitary purposes domestically. In this paper, based on the basic experiment procedure and measurement details for acquiring structural behavior data, the blast experimental measurement system and procedure are established details. The procedure of blast experiments are based on the established measurement system which consists of sensor, signal conditioner, DAQ system, software. It can be used as basic research references for related research areas, which include protective design and effective behavior measurements of structure under blast loading.

• Research in Community and Public Health Nursing
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• v.10 no.1
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• pp.183-203
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• 1999

High school is regarded as the period when many important physical, mental and social developments occur, and when many health-related behaviors are formed. School health education is one of the major learning resources influencing health potential in the home and community as well as for the individual student. High school health education in Korea has a fundamental systemic flaw however, in that health -related subjects are divided and taught under various subjects at school. In order to achieve quality health education, it is essential to assess the learners' and teachers' educational needs. So far, most of the research projects that had been carried out for improving high school health education were limited to only the learners' educational need. They failed to in elude an educational assessment of the teachers. Therefore, in this study the high school health education teachers' needs relating to health education were investigated through a focus on the teachers' health education activity level, health education activity self-efficacy level, and perceived level of importance in health education content. In this study, research instruments these factors were constructed by Yoo(1997) on the basis of the PRECEDE model. The data for this study were collected from a sample consisting of twenty general and vocational high schools in Seoul and Chongju for a two month period beginning in July, 1996. In analyzing the data, an ANOVA test and stepwise multiple regression were accomplished using an SPSS - PC+ program. The results were as follows: The average level of health education activity and self-efficacy among high school health edu cation teachers were found to be low. But, teachers' perceived importance of health education contents was high. Teachers' activity and perceived importance concerning sex education were lower than in other health education areas. Health education activity of Military drill teachers was higher than that of physical education teachers as well as school nurses. But it was not significant. Health education activity self-efficacy of school nurses was higher than that of other teachers(p<.05). Perceived level of importance of health education contents was the most influential variable in teachers' health education activity. Health education activity self-efficacy level was not an influential variable in teachers' health education activity. The significance of this study is that it has diagnosed the needs of high school health education through the teachers' assessment of a variety of health factors related. These findings suggest that the management of an integrated health education, program requiring large changes in the curriculum of health education is necessary.

• Women's Health Nursing
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• v.1 no.2
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• pp.222-243
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• 1995

The purpose of this study was to develop concrete and in-depth knowledge about menarche and to raise the need of menstrual education. The data were collected from purposively sample 34 women from twenties to forties from April 27 to October 10, 1994. Semi-structured intensive interviews were done and these qualitative data were analysed with "Ethnograph" computer program. The results of the study were as follows : 1. The experience of menarche could be classified into two main groups, which were positive and negative response to menarche. The negative experiences were to be shameful, tearful, scared of the phenomena and thought as a kind of punishment for guilt or confused menarche with other symptoms of diseases. On the contrary, the positive experiences were to be proud of physical maturity and to think that is was wonderful, miraculous and to perceive it as a warm experience. 2. The experience of menarche was influenced by various factors. They were the knowledge about menstruation, the quality and amount of informations, the time of menarche, the environmental factors, the response of significant others toward menarche. The experience of menarche could be positive or negative according to these factors. 3. The previous information sources about menstruation could be significant others, school education and mass-media. The significant others were mothers, sisters, friends and the person in charge of school sex education such as school nurses, home economics, military drill and athletics of teachers. And mass-media included sex education booklets, nursery tales, TV programs, and publicity activities of sanitary napkin companies. 4. The opinions of the subjects about the proper time of menarcheal education could be grossly classified into two groups. The first was active approach toward children when they were in elementary school. The second was passive approach which postponed the time until the child ask about it, because it would be awkward for them to discuss about the topic. 5. The participants thought that the ideal methods of menarche education would be systematic school education programs, open discussion with daughters, audio-visual teachings, or practical education in everyday life. 6. The contents of the menarche education based on the participants' opinions, would be positive details about meanings and functions of menstruation. And it would be desirable if the attitudes of the person in charge of education could be positive, open-hearted, and favorable toward menstruation.

• Journal of the Korean earth science society
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• v.31 no.7
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• pp.785-797
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• 2010

This study identified the linguistic features of Earth science treatises through the analysis of the register. Data included three Korean treatises that were in geology, atmospheric science, and oceanography. The register of Earth science treatise was as follows: First, there were semantic, referential connections between Themes and Rhemes, that the messages and main points of the texts were expressed coherently and cohesively. Second, some predicates were used which were related to deductive inference, abductive inferences, or causal relation according to the genre elements of each text. The logical relations were not represented by the conjunctions but by the types of predicates. Third, most texts in the treatises showed interpersonally weak relationship using mental predicates related to possibilities, which meant scientists expressed indirectly their interpretation, explanation, or arguments. From these results, we argued that some activities of unpacking the language of science be included in science curriculum in order to improve students' literacy of science texts and understanding scientists' knowledge construction.

• Journal of the Korean Institute of Navigation
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• v.17 no.4
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• pp.1-21
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• 1993

The purpose of this paper is to search for reasonable and fair principles applicable to the delimitation of the Exclusive Economic Zone(which is called the EEZ, hereinafter) around the Korean Peninsula th-rought the comprehensive study of maritime boundary, which is one of the most important issues in the law of the Sea. So far, the sea has been exploited for activities such as fishery, transport and military stratedy, and en-vironmental policy and so on. From this time on, however, it becomes important to us as the major trea-sure-house of various resources which will be developed and used for diversified purposes. For these rea-sons, nowadays, more and more countries of the world are competing to secure waters as much as possible within their jurisdiction. And the regime of the EEZ was created as a result of this international trend. At last, it has been institutionalized as the 200-mile EEZ of a legal notion in the Convention on the Law of the Sea, which was adopted at the Third United Nations Conference on the Law of the Sea, in Jamaica on December 10, 1982. In adapting to this EEZ institution, Korea is faced with several complicated problems as it is bounded on three sides by the sea and all of its neighboring countries such as the PRC, the DPRK, Japan, Russia etc are less than 400 miles away between opposite countries. Therefore, when trying to delimit the boun-dary for the EEZ, it appears necessary to analyze applicable principles and rules of international law for delimitation mainly through the Convention on the Law of the Sea, and studies the trends of actual State practices and recent international precedents. It is hoped that such knowledge will enable Korea to secure sufficient resources and other sovereign rights without conflicting with the neighboring countries concer-ned. For the achievement of the above mentioned object. I analyzed the necessities of the establishment of the EEZ in Korea, the difficulties and practices of Korea's neighbors, and the changes and forthcoming trends in Korea's relations with its neighbors concerned on the basis of the general explanation of the EEZ regime. In conclusion, it is my opinion that for the establishment of the EEZ delimitation which neighbors around the Korean Peninsula should be applied reasonable and equitable principles considering the rele-vant circumstances which characterize the area definitely as well as the UN Convention on the Law of the Sea, 1982.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.4
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• pp.611-616
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• 2018

With the recent increase in awareness of the diversification of patterns of warfare and security, technological evolution is occurring in the field of autonomous defense robots. As defense science and technology develops with the development of the concept of military utilization focusing on human lives and economic operation, the importance of autonomous robots in the effect-oriented future battlefield is increasing. The major developed countries have developed core technologies, investment strategies, priorities, data securing strategies and infrastructure development related to the field of autonomous defense robots, and research activities such as technology planning and policy strategy for autonomous defense robots in Korea have already begun. In addition, the field of autonomous defense robots encompasses technologies that represent the fourth industrial revolution, such as artificial intelligence, big data, and virtual reality, and so the expectations for this future area of technology are very high. It is difficult to predict the path of technological development due to the increase in the demand for new rather than existing technology. Moreover, the selection and concentration of strategic R&D is required due to resource constraints. It is thought that a preemptive response is needed. This study attempts to derive 6 new technologies that will shape the future of autonomous defense robots and to obtain meaningful results through an empirical study.

• Journal of the Economic Geographical Society of Korea
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• v.7 no.2
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• pp.203-225
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• 2004

The purpose of this paper analyzes the characteristics of economic space in Gyeonggi border regions. Especially, this study focuses on understanding the environment enveloped the enterprises because today, largely influenced factor for regional economic development is enterprises. Since 1990's the change of the spacial organization in Korean Capital region has been inducing the functional transformation in Gyeonggi border regions so that new function -beyond military functions- is developed in these regions. By the disindustrialization in core region contributed to the industrialization in periphery, border regions are developed as a concentrated space of traditional industries and small size manufactural firms. The most important pull factor is facility for obtain a factory site and favorable condition of land price. Globally, the reasons to locate enterprise in these regions are found not in positive and progressive strategies but in passive and defensive strategies. Therefore few enterprise carried about influences of economic cooperation between North and South Korea at the moment of decision of their site. The survey reveal that enterprises didn't highly estimate the environment in border regions as their business activities. The first dissatisfied condition is insufficiency of labour and difficulty of access for administrative and high level services, due to geographical separation. Considering the recent tendency of spacial reorganization in Capital region is not always good for border regions, border regions have to employ a policy with the object of ameliorating regional business environments and growing up a potentiality of endogenous development.

• Korean Journal of Health Education and Promotion
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• v.12 no.1
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• pp.47-71
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• 1995

This research has been attempted to measure health acknowledgement and needs of 1158 respondents, the parents of elementary, middle, and high school students, residing in Seoul and In-chon. 1. The majority of parents had high interests in health and their children's health education. In addition, more than half of parents showed positive responses in their willingness to participate in organizational activities. 2. 41.7% of parents thought that their children were receiving health education regularly. For their recognitions of the course title, 'Physical Education' was the most highly recognized by the parents of elementary and middle school students, and 'Military Drill' for the parents of high school students. 3. A high number of parents perceived the problems of school health education. 4. There was a high number of parents, who thought that health education teachers' knowledge was deficient, and 86.3% of them agreed that additional education for 33the teachers should be desired. 5. 95.5% of parents acknowledged the necessity of health education; 78.8% of them recognized the reinforcement of health education; and 60.0% of them percepted the necessity of establishing the independent health education courses. 6. For the matter of instruction period, the majority of parents responded that health education should be taught from "kindergarten" and "elementary school". For the appropriate instruction hour per a week, the majority answered 1 hour. Most respondents answered that those, who majored in health education, should be the appropriate teachers. 7. The survey result indicated that there was a close correlation between the cognition of the importance of health education and the correspondents' health educational background, their interest and willingness to participate in health education. 8. The most desired areas of health education were Safety Education and Health-Habit. The followings were Environmental Health, Prevention of Disease, Mental Health, Growth and Nutrition, and Drug-Abuse in a sequent order. The parents of elementary school students showed a high acknowledgement on Health-Habit, Growth and Nutrition, and Prevention of disease, Safety Education. On the other hand, as the children entered into the advanced schools, the parents' recognition of the health education needs shifted into Sex education, Drug Abuse, and Mental Health. 9. Those respondents, who recognized the necessity of health education and advocated the establishment of independent health education courses, had a strong demand for the implementation of the health education.