• School Mathematics
• /
• v.7 no.2
• /
• pp.103-121
• /
• 2005

This article compares and analyzes mathematics textbooks of North Korea, South Korea, China and Japan and draws meaningful ways for introducing the division algorithm of fractions. The analysis is based on the five contexts: 'measurement division', 'determination of a unit rate', 'reduction of the quantities in the same measure', 'division as the inverse of multiplication or Cartesian product', 'analogy with multiplication algorithm of fractions'. The main focus of the analysis is what context is used to introduce the algorithm and how much it can appeal to students. This analysis supports that there is a few differences of introducing methods the division algorithm of fractions among those countries and more meaningful way can be considered than ours. It finally suggests that we teach the algorithm in a way which can have students easily see the reason of multiplying the reciprocal of a divisor when they divide with fractions. For this, we need to teach the meaning of a reciprocal of fraction and consider to use the context of determination of a unit rate.

• Korean Journal of Comparative Education
• /
• v.27 no.1
• /
• pp.51-76
• /
• 2017

This study aims to examine the integration process of educational system and school structure of the former East Germany into the Federal Republic of Germany following German unification. More specifically, the study focuses on drawing some policy suggestions and implications for achieving integration of South and North Korean educational system in a unified Korea. In fact, the school structure in the former East Germany had been integrated into West German educational system and school structure before and after official German unification by way of so called transitional process. The results of the study indicate that the integration process of school structure in the former East Germany into West German educational system was quite successful with stable management by means of various transitional measures and reaching an agreement between East and West Germany. Additionally, the study presents that local characteristics regarding school structure in the former East Germany were recognized and introduced in the integration process and they managed to handle the social change situation after German unification flexibly. However, it shows some shortcomings because it had been carried out in too short a period of time and the positive factors of school structure in the former East Germany had not been enough taken account into the integration process, along with the lack of inner comprehensive relevant infrastructure. Furthermore, the study points out that German case of school structure and its integration process after German unification has implications for specific ways Korea should pursue to achieve integration of South and North Korean educational system in a unified Korea. To be more specific, it suggests how we come up with plans and measures to establish integration of South and North Korean school structure in a stable way especially in terms of dealing with North Korean school structure and building an inner infrastructure.

• Economic and Environmental Geology
• /
• v.38 no.2 s.171
• /
• pp.197-206
• /
• 2005

North Korea is plentiful in the mineral resources as magnesite, gold, zinc, iron, rare metal, and coal resources compared to South Korea and has 6 industrial zones which are located nearby to the mineralized areas. The industrial zones are provided with a sound infrastructures and accumulation of advanced technology. As a huge mineral and energy consuming country, South Korea imports mineral and coal resources equivalent to almost 8 trillion won annually. Inter-Korean cooperation for development of mineral resources in North Korea will be improved by the practical use of the North Korea's plentiful mineral resources, infiastructures related to development and refinement, and basic geo-technology, which would be considered toward combining with South Korean capital and Russian geo-technologies.

• Journal of Korean Library and Information Science Society
• /
• v.53 no.2
• /
• pp.117-136
• /
• 2022

The purpose of this study is to derive implications by comparing and analyzing the North Korean Library Act both in 1999 and in 2012. In this study, the North Korean Library Act revised in 2012 compared to the previous North Korean Library Act in 1999, and the newly revised, deleted, and newly established items were analyzed by old/new phrase contrast method. While the North Korean Library Act revised in 1999 consisted of a total of 5 chapters and 45 articles, the North Korean Library Act revised in 2012 was reorganized into a total of 6 chapters and 58 articles. The main changes and features are the establishment and modification of provisions related to electronic libraries and electronic publications in accordance with changes in the information service environment, and new provisions related to training of library staff. Based on the analyzed results, the topics and fields that can be discussed in the future, such as mutual exchange of various learning contents for remote education, establishment of an information service cooperation system between South and North libraries, and training specialists on North Korean libraries.

• Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
• /
• 1997.10a
• /
• pp.68-72
• /
• 1997

사천진항은 동해안에 위치한 제1종 어항으로 강원도 강릉시에 소재하고 있는 항구로서 남북쪽에 비교적 긴 모래 해안이 발달해 있으며 항 남단으로 사천천 하구와 연결되고 있다. 항북쪽으로는 연곡천, 남쪽 아래쪽에서는 남대천이 흐르고 있으며 해안은 1/40-l/60의 대체로 완만한 경사를 이루고 있다. 사천진항은 태풍의 내습이 없는 항으로 탁월풍은 SW, 평균풍속은 2.7㎧로서 년 강우량이 1383mm이며 조석관계는 평균조차가 13cm, 대조차가 약 17cm, 소조차가 약 9cm로서 작은 조차를 보이고 있다. (중략)

• Journal of the Korea Convergence Society
• /
• v.12 no.1
• /
• pp.275-281
• /
• 2021

The purpose of this study is to analyze the differences in Mulan character makeup and to determine whether the makeup of the period reflects the traditional culture through the analysis of Mulan's movies produced in the background of the Mulan Si story in the period of China's North and South Dynasties, the Sui Dynasty, and the Tang Dynasty. The research method is to analyze makeup images. Mulan's usual appearance at home, the appearance in the military, and the appearance of Mulan after wearing makeup were compared to the actual makeup of North and South Dynasties, the Sui Dynasty, and the Tang Dynasty. There are three works refer to the period makeup: the movie (2020), (2020), and the drama (1998). Two Mulan films, (2020) and the movie (2020) use makeup from the North and South Dynasties such as Eo Hwang-jang, Myeonyeop, and Sa Hong to create the character Mulan. (1964) is a work based on the makeup culture of the Tang Dynasty of the Sui Dynasty. Through this paper, hope to look forward to the development of Mulan-related movie works in the future, and at the same time, it is considered that the make-up production according to the periods will be helpful in the creation of movie when producing movie in the background of the North and South Dynasties, the Sui Dynasty, and the Tang Dynasty.

• Annual Conference on Human and Language Technology
• /
• 1992.10a
• /
• pp.367-375
• /
• 1992

한국어는 다른 언어와는 달리 초성, 중성, 종성의 자소가 모여서 한 음절을 이룬다. 음절을 이루는 자소는 그 발생의 확률적 성질에 따라 확률변수로 간주된다. 음절 안에서 자소간의 발생의 상관관계는 자소간 조건부 확률 및 엔트로피로 표시된다. 음절이 모여서 단어를 이루고 단어를 이루는 음절은 그 발생의 확률적 성질에 따라 확률변수로 간주된다. 한국어 단어안에서 음절간의 발생의 상관관계는 음절간 조건부 확률 및 엔트로피로 표시된다. 수 있다. 그런데 가능한 음절의 종류가 매우 많기 때문에 음절 발생의 상관관계를 표시하는 지표로서 음절간 조건부 확률 대신 초성, 중성, 종성 단위의 조건부 확률을 사용하는 것이 음절간의 발생의 상관관계를 표시하는데 효과적이다. 이러한 한국어의 정보이론적 연구를 위하여서는 기초자료로서 한국어 단어의 빈도분포가 필요하다. 한국어 단어의 빈도분포의 포괄적인 조사는 1956년의 "우리말 말수 사용의 잦기 조사"가 유일한 실정이다. 시간 경과에 따른 한국어의 정보이론적 특성 변화의 분석을 위하여서는 한국어 단어 빈도의 주기적인 조사가 필요하다. 한국어에서 초성, 중성, 종성단위의 정보이론적 연구결과는 한국어 음성인식 및 함성, 자연언어처리, 암호법, 언어학, 음성학, 한국어부호 표준화 연구등에 이용될 것으로 기대된다. 남북한의 언어는 분단이 지속됨에 따라 상호 이질화가 진행되고 있다. 이러한 이질화를 극복하려는 부분적인 노력으로 남북한 언어의 한국어 영문표기의 단일화 등이 있었다. 이러한 노력에 병행하여 남한과 북한의 언어에 대한 정보이론적 비교 연구도 있어야 할 것이다. 정보를 효과적으로 캐싱할 수 있도록 인접한 데이터를 클러스터링해서 브로드캐스팅하여 이동 호스트의 구성 시간(setup time)을 최소화하였다. 그리고, 맨하탄거리(Manhattan Distance)를 사용해서 위치 의존 질의에서 사용하는 데이타를 캐싱하고 질의를 처리하는 방법을 제안한다. 맨하탄 거리를 이용해서 캐싱하면 도로에 인접해서 위치한 데이타를 효과적으로 캐싱할 수 있다. 또한, 거리 계산 방법으로 맨하탄 거리를 사용하면 도심에서 실제 이동 거리와 비슷한 값을 알 수 있고, 직선 거리 계산식에 비해서 계산식도 간단하기 때문에 시스템 계산량도 줄일 수 있다. 기준으로 라이신 부산물은 어분 단백질을 40%까지 대체가 가능하였으며, 아울러 높은 라이신 부산물의 대체 수준에 있어서 사료효율과 단백질 전환효율을 고려한다면 아미노산 첨가(라이신과 아르지닌)와 중화 효과에 좋은 결과가 있을 것으로 사료된다.의한 적정 양성수용밀도는 각고 5~6cm 크기의 경우 10~15개체가 적합하였다. 수증별 성장은 15~20 m 수층에서 빨랐으며, 성장촉진과 폐사를 줄이기 위해서는 고수온이 지속되는 7~10월에는 20~30m수층으로 채롱을 내려 양성하고 그 외 시기에는 15 m층 내외가 좋은 것으로 나타났다. 상품으로 출하 가능한 크기 인 각고 10 cm이상, 전중량 140 g 내외로 성장시 키기까지는 채묘후 22개월이 소요되었고, 출하시기는 전중량 증가가 최대에 이르는 3월에서 4월 중순이 경제적일 것으로 판단된다.er 90 % of good relative dynamic modulus of elasticity due

• Journal of Korea Water Resources Association
• /
• v.57 no.8
• /
• pp.509-518
• /
• 2024

Flash drought is a rapid-onset drought that occurs rapidly over a short period due to abrupt changes in meteorological and environmental factors. In this study, we utilized satellite-based soil moisture product from the Advanced Microwave Scanning Radiometer-2(AMSR2) ascending X-band to calculate the weekly Flash Drought Intensity Index (FDII). We also analyzed the characteristics of flash droughts on the Korean Peninsula over a 10-year period from 2013 to 2022. The analysis of monthly spatial distribution patterns of the irrigation period across the Korean Peninsula revealed significant variations. In North Korea (NK), a substantial increase in the rate of intensification (FD_INT) was observed due to the rapid depletion of soil moisture, whereas South Korea (SK) experienced a significant increase in drought severity (DRO_SEV). Additionally, regional time series analysis revealed that both FD_INT and DRO_SEV were significantly high in the Gangwon province of both NK and SK. The estimation of probability density by region revealed a clear difference in FD_INT between NK and SK, with SK showing a higher probability of severe drought occurrence primarily due to the high values of DRO_SEV. As a result, it is inferred that the occurrence frequency and damage of flash droughts in NK are higher than those in SK, as indicated by the higher density of large FDII values in the NK region. We analyzed the correlation between DRO_SEV and the Evaporative Stress Index (ESI) across the Korean Peninsula and confirmed a positive correlation ranging from 0.4 to 0.6. It is concluded that analyzing overall drought conditions through the average drought severity holds high utility. These findings are expected to contribute to understanding the characteristics of flash droughts on the Korean Peninsula and formulating post-event response plans.

• Korean Journal of Social Welfare Studies
• /
• v.42 no.3
• /
• pp.5-32
• /
• 2011

The purpose of this study is to examine the research trends of social welfare in North Korea and to make suggestions for the further research. This study analyzed a total of 99 articles(from 1972 to 2009) related to social welfare in North Korea. The main findings of this study are as follows: First, the approaches of change within system are needed and this can make well-balanced perspectives. Second, the perspectives of external-totalitarian must be rejected and the immanent-critical approaches should be addressed. Third, in terms of study contents, ideological, institutional and practical studies need to be extended. Fourth, micro studies should be more developed. Fifth, in the research method, the quantitative research method, and the synthetic and comparative strategies should be more employed. Finally, use of original text should be further conducted.

• Journal of Mushroom
• /
• v.21 no.3
• /
• pp.93-100
• /
• 2023

In this study, research trends in mushroom science were examined using North Korean journal articles published in 1978-2023. Researchers in each field reviewed 450 papers and finally selected 429 papers, excluding 21 papers classified in different fields. The number of researchers was 872, and the number of authors per paper was 2.03. Kim Cheol-Hak published the most academic papers in the field of mushroom science in North Korea, with 12 papers. The number of research articles increased annually, from 7 in 1985, 12 in 1998, 11 in 2008, and 27 in 2020, and has especially increased rapidly since the mid-2010s. The study by mushroom type was as follows: 42 pine mushrooms (17.8 %), 25 oyster mushrooms (10.6 %), 23 Ganoderma sp. (9.8 %), 19 shiitake mushrooms (8.1 %), 17 button mushrooms (7.2 %), and 16 manna lichens (6.8 %). This study is considered meaningful in reviewing the research status and technology level in North Korea through analyzing North Korean academic journals in the field of mushroom science for the first time.