• Journal of Astronomy and Space Sciences
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• v.13 no.2
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• pp.163-172
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• 1996

The objective of this paper is to show how digital signal processing experiment(DSPE) was designed and to present its experimental results in orbit and on the ground. The multi-missional and flexible DSPE was designed in a reliable manner. Among several experiments executed in orbit and on the ground, a high-speed(19.2kbps) software modulator experiment was discussed in this paper. A 32bit floating-type TMS320C30, which was developed for commercial purposes, was used on LEO micro-satellites, KITSAT-1 and KITSAT-2. This digital signal processor(DSP) can be applied to the various payloads of the next generation satellites.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2012.07a
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• pp.155-157
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• 2012

'재난방송' 이라고 하면, 어떻게 하면 재난정보를 신속하게 피해주민들에게 전달하여 그 피해를 최소화 할 수 있을까 하는데 목적이 있는 것으로 생각하고 있다. 그러나 이는 단지 재난정보를 전달하는 재난전달시스템에 불과하다고 하겠다. 실제로 '재난방송' 이라고 말하면 재난이 발생했을 때 '무엇을' '어떻게' 방송하는 것이 재난피해를 최소화 할 수 있을 것인가에 대한 논의가 본래의 재난방송의 의미라고 하겠다. 즉, 재난방송은 전달하는 내용이나 전달 방법에 따라서 전달효과(impact)가 달라서 재난방송은 사전에 충분히 준비하고 준비된 방송내용과 전달방법이 필요하다고 본다. 본고는 2011년 3 11 동일본대진재 당시 일본의 텔레비전방송은 실제로 '무엇을' '어떻게' 방송했는지를 자세하게 분석해 본다. 구체적으로 일본의 주요방송 3사인 NHK, 니혼TV, 후지TV의 3일간 실시한 재난방송의 (1)기본화면과 (2)전달내용 등을 분석 해 보기로 한다. (1)NHK의 경우는 아나운서나 기자, 해설위원 등 자국 직원이 전달하는 비율이 80%를 넘고 있다. 외부 전문가는 4.4%로 소수에 불과하다, (2)니혼TV는 자국 직원이 대응하는 비율이 75.6%로 비교적 높은 편이나, 외부 전문가도 8%나 된다. 후지 TV의 경우는 직원이 대응하는 비율이 71.4%로 방송 3사 중 가장 낮은 비율을 보이고 있다. 그러나 외전문가로는 13.3%로 NHK에 비해 3배 정도로 외부 전문가를 이용해 객관성을 높이고 있다. NHK 재난방송은 원고로써 정리된 정보를 주로 아나운서나 기자, 해설위원이 전달하는 형태를 취하는 것을 기본패턴으로 하고 있다.

• 한국IT서비스학회:학술대회논문집
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• 2003.05a
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• pp.420-427
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• 2003

최근 국내 기업들의 ERP시스템 도입 사례는 대기업에서 중소기업으로, 제조업중심에서 금융, 서비스, 유통 등의 다양한 산업분야로 그 영역을 확장하고 있다. 또한 SCM(Supply Chain management), CRM(Customer Relationship Management)과 같은 확장ERP 시스템의 도입도 활발히 진행되고 있다. 여러 가지 측면의 ERP시스템의 확장 방향 중에서 산업별 특성에 따른 ERP시스템의 개발은 해당 산업분야의 규모와 중요성의 순서에 따라 그 깊이와 범위가 다르게 이루어 졌으며, 소수 특이한 산업에 대한 솔루션은 미개발 상태인 경우가 많이 있다. ERP 소프트웨어 공급업체들은 주요 산업별로 특징적인 업무 프로세스를 지원하기위해 추가적인 프로그램을 공급하거나 개발 중에 있다. 본 연구는 국내 기업 중 다소 특수한 업무 프로세스를 가지고 있는 OEM(Original Equipment Manufacturing) 형태의 생산방식을 가진 의류 제조, 판매 업체의 ERP도입 사례를 통하여 ERP시스템 유연성의 한계에 대해 검토하여 보고 OEM산업과 의류산업이라는 산업특성에서의 ERP시스템 도입이 어떠한 문제점을 지니고 있는지 조사해 보고자 한다. 본 연구는 이를 위해 OEM산업에 대한 고찰과 의류업종의 업무적 특징을 정리하여 보고 실제 ERP 도입 사례를 통해 발견된 도입 특성 또는 도입시의 문제점과 해결 방안을 제시함으로서 향후 유사 업종의 ERP 시스템 도입 시 유용한 지침(Guideline)을 제공하고자 한다. ERP 도입사례는 SAP R/3를 채택하여 약 9개월간의 도입기간에 나타난 현상들을 기반으로 한다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.15 no.12
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• pp.981-989
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• 1990

Thos paper summarized previously proposed several public key distribution systems and proposes a new public key distribution system to generate an common secret conference key for public key distribution systems three or more user. The now system is based on discrete exponentiation, that is all operations involve reduction modulo p for large prime p and we study some novel characteristics for computins multiplicative inverse in GF(p). We use one-way communication to distribute work keys, while the other uses two-way communication. The security of the new system is based on the difficulty of determining logarithms in a finite field GF(p) and stronger than Diffie-Hellman public key distribution system.

• Journal of Ethics
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• no.77
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• pp.73-112
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• 2010

This study aims to explore the character and problem of multicultural society in Korea in terms of the concept of moral panics. Its major issues are dealt with as follows: Firstly, this essay will apply two concepts of culture in multiculturalism - the pattern of meaning and a study of perfection- to three degrees of multicultural members: by individual, by groups and by a society as a whole. In this approach, moral panics of multicultural society in Korea have been manipulated by the secondary definitions like Korean government and media. In this study, however, the resource of the panics would be seen as nationalism in Korean history. To remove it in this essay, the conception of the pattern of meaning, which makes members understand others outer their norms, should be harmonized with that of a study of perfection by which they have identities. Secondly, the main subject of multiculturalism in Korea should at least be majority (groups)-Korean, not minority (groups)-foreigners. A stereotype of foreigners by majority is an image distorted by nationalities and races. People, for example, with the white skin from advanced countries are recognized as superior, while those born in the countries of Southeast Asia are, consciously or unconsciously, discriminated and have low positions due to socio-economic stratification in Korea. In this sense, a study of multicultural society in Korea should go forward to the inner direction to majority, because it is one of the real moral panics in Korea. In conclusion, it is important that there must be a study of identity which we can have of others in multicultural studies of Korea. It enables us to meet the conception of diversity. In that Korean government and media have neglected the danger of nationalism, it is also necessary that this study have any foundation of morality in ethics, which can give useful alternatives to the given polices of the secondary definitions.

• Journal of The Korean Association For Science Education
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• v.35 no.3
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• pp.375-382
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• 2015

Textbooks corresponding to curriculum goals are necessary because they are specific products of curriculum and are the most important materials for teaching, learning, and evaluation. In particular, learning objectives written in textbooks should be clearly described because they play a role in promoting learning by showing learning goals to learners clearly. This study analyzed the characteristics of verbs used as predicate of learning objectives written in high school physics I and II textbooks of Korea and compared them with physics textbooks of Singapore and the United States. Results show that Korean textbooks have less kinds of verbs compared to those of Singapore and the United States, and the verbs with abstract and comprehensive meaning such as 'understand' and 'know' were mainly used. In American textbooks, it was noticeable that no verbs have been used by more than 10%. When classifying the learning objectives in the two Korean textbooks, cognitive domain accounted for 98 to 99%, and inquiry domain accounted for only 1% to 2%. With regard to physics textbooks of the United States, inquiry domain accounted for a large proportion of domains in learning objectives compared with physics textbooks of Korea and Singapore. Physics textbooks of Singapore were similar to those of Korea in that learning objectives were biased toward cognitive domain, but differed from those of Korea in that learning objectives were specifically described using action verbs.

• Communications of Mathematical Education
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• v.37 no.1
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• pp.85-104
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• 2023

The purpose of this study is to analyze the types of mathematics journals of elementary school students and to understand how they change in mathematics journals as the grade goes up, and to obtain implications in mathematics education. To this end, 170 of the 222 parish mathematics data submitted to the "Math Journal Contest" were analyzed with the consent of both minors and their parents. As for the framework for analyzing math journal types, 12 types were derived through independent analysis between three researchers. The research results showed that first, the type of math journal written by elementary school students is a variety of journals, such as observation, problem making, concept organization, and review. In addition, as a learning area, it was found that math journal showed a noticeable increase in experimental observation, problem making, and concept journal as the grades progressed, while a small number of idea journal and explanatory journals appeared. However, game (winning) strategy building and types declined. It can be seen that this is evolving from a type that requires activity-oriented or simple descriptions to a type that actively applies mathematical concepts. As such, there are 12-type of math journals, but it is necessary to actively use the teaching materials in writing that can be freely expressed in the school setting.

• The Journal of the Korea Contents Association
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• v.18 no.8
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• pp.102-108
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• 2018

The existing data transmission technology applied between the non-secure external internet and the secure internal business network has various problems when applied to the building facility management SCADA system control network. Traditional inter-network data transfer technologies involve high complexity and high costs because blacklist-based security techniques are applied to all data. However, whitelist-based security techniques can be applied to data distributed in Building Facility Management SCADA control systems because a small number of structured control data are repeatable and periodic. This simplifies the security technology applied to inter-network data transmission, enabling building facility management SCADA system control network deployment at low cost. In this paper, we proposed building control networks specialized in building facility management SCADA control systems by providing solutions to address and address these problems.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.43 no.3 s.345
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• pp.40-47
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• 2006

The finite-field multiplication can be applied to the elliptic curve cryptosystems. However, an efficient algorithm and the hardware design are required since the finite-field multiplication takes much time to compute. In this paper, we propose a radix-4 systolic multiplier on $GF(2^m)$ with comparative area and performance. The algorithm of the proposed standard-basis multiplier is mathematically developed to map on low-cost systolic cells, so that the proposed systolic architecture is suitable for VLSI design. Compared to the bit-parallel, bit-serial and systolic multipliers, the proposed multiplier has relatively effective high performance and low cost. We design and synthesis $GF(2^{193})$ finite-field multiplier using Hynix $0.35{\mu}m$ standard cell library and the maximum clock frequency is 400MHz.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.44 no.3 s.357
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• pp.35-42
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• 2007

The finite-field division can be applied to the elliptic curve cryptosystems. However, an efficient algorithm and the hardware design are required since the finite-field division takes much time to compute. In this paper, we propose a radix-4 systolic divider on $GF(2^m)$ with comparative area and performance. The algorithm of the proposed divide, is mathematically developed and new counter structure is proposed to map on low-cost systolic cells, so that the proposed systolic architecture is suitable for YLSI design. Compared to the bit-parallel, bit-serial and digit-serial dividers, the proposed divider has relatively effective high performance and low cost. We design and synthesis $GF(2^{193})$ finite-field divider using Dongbuanam $0.18{\mu}m$ standard cell library and the maximum clock frequency is 400MHz.