• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.1
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• pp.194-198
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• 2013

A total of 193 children between three and six years of age were given tests by using the PRES, REVT, KOSECT, and APAC. A specificity between referred and non-referred cases was not high. In the current study, the sensitivity of formal tests was insufficient. But combining of parental report with formal language tests could provide good criteria for identifying language impairment. The CCC-2 may provide an effective means to identify language difficulties using a standardized approach.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.7 no.1
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• pp.105-111
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• 2012

Purpose: This is the study about the experiences of university students in traditional Korean education. Methods and process: This study was based on the grounded theory method(Strauss & Corbin, 1998). Interviews and observations were conducted with 20 adults who were thought by the researcher as the teacher. They are 21 or 33 years old. This paper had conducted during 14 weeks, Results: The core category of this study is 'university students' adaptation and overcome the conflicts in the every situation. Based on the core category, three types of students' experiences were found. Three types of students are 'negative-cognition', 'positive-cognition', 'indifference'. Conclusions: For making globalizational period, we need the teachers who can understand the traditional Korea education. And we have to change them.

• Journal of KSNVE
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• v.8 no.2
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• pp.331-335
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• 1998

A design modification was made on the 9-th stage wheel dovetail of a high-intermediate pressure (HIP) turbine rotor for a fossil power plant that necessitates the use of new long-shank buckets for the row. A bucket vibration test is necessary to verify that the new 9-th stage buckets have adequate frequency margin from a nozzle passing frequency when running at speed. A finite element analysis (FEA) has been performed using a commercial S/W to approximately estimate bucket natural frequencies, and thus to help the vibration test. A row of the new buckets has assembled on the HIP rotor for the vibration tests using dynamic balancing facilities. The tests have been done during deceleration run with air excitation. The test results are compared with the calculation using our empirical formula, and show that the modified design meets the frequency-margin requirements.

• Proceedings of the Korean Journal of Food and Nutrition Conference
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• 2003.07a
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• pp.81-81
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• 2003

우리 민속전통주의 참나무 oak통을 이용한 저장주의 가능성을 규명하기 위하여 상법에 의하여 쌀로 제조한 증류주를 용량 10L의 수입 참나무(oak)통에서 실온 25로 5개월부터 9개월까지 숙성한 숙성주와 숙성하지 않은 증류주의 성분함량 변화를 측정하여 다음과 같은 결론을 얻었다. 1) 유기산은 검출되지 않았으며 다만 7개월 이상 숙성주에서 acetic acid 가 0.023 ∼ 0.033%로 미량 검출되었다. 2) 총 유리아미노산의 함량은 숙성 기간이 경과할수록 감소하였다. ) 휴젤유 함량을 측정한 결과 숙성 기간이 길수록 감소하였으며 휴젤유 중 가장 많은 성분은 isopropyl alcohol이었다. 4)휘발성 향기성분은 숙성기간이 경과함에 따라 이취를 생성할 수 있는 aldehyde나 ketone류가 감소하였고 신선한 과실향이나 꽃향기 등의 향기 성분인 ester류가 증가하여 숙성 5개월째에는 oak 숙성주로서 가장 독특한 향을 갖는다고 예측할 수 있었다. 5) Gas chromatography-olfactometry를 이용하여 각각의 시료들의 향기특성을 관능 평가하여 동정한 결과 전반적으로 green 및 herb note가 우세한 숙성기간 8개월 숙성주가 가장 우수한 것으로 판단되었다. 6) 전체적인 색상 비교 결과 기준값이 되는 oak 숙성을 하지 않은 증류주보다 숙성기간이 오래 경과된 숙성주일수록 점점 높아지는 경향을 보였다. 또한 UCS graph에서 보면 기준값 보다 숙성된 시료가 탁하다는 것을 나타냈고 색상 선에서는 기준시료보다 R(red)에 가까웠다. 숙성기간이 긴 발효주일수록 명도는 낮았다.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.36 no.11
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• pp.1094-1103
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• 2008

A fuel specific detonation wave in a pipe propagates with a predictable wave velocity. This internal detonation wave speed determines the level of flexural wave excitation of pipes and the possibility of resonant response leading to a large displacement. In this paper, we present particular solutions of displacements and the resonance conditions for internally loaded pipe structures. These analytical results are compared to numerical simulations obtained using a hydrocode(multi-material blast wave analysis tool). We expect to identify potential explosion hazards in the general power industries.

• Journal of the Korean Geotechnical Society
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• v.17 no.2
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• pp.73-83
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• 2001

본 연구에서는 전국 4개 지구의 화강암 풍화토를 연구대상으로 현장 및 실내시험을 수행하고 토량 변화율을 노상과 노체에 대하여 결정하였다. 그리고, 본 연구에서는 인공 신경망 중 오류 역전파 학습 알고리즘을 도입하여 토량 변화율 C 값을 추정하고 신경망의 적용성에 대한 검증을 수행하였다. 화강암 풍화토에 대한 실내 및 현장시험 결과에서 얻어진 토량 변화율 C 값은 노상과 노체 구분 없이 최소 0.7에서 최대 1.2정도의 넓은 범위로 나타났다. 토지공사에서 제안하는 C값의 산정식과 본 연구 결과를 비교한 결과, 토지공사의 산정식에 의한 결과가 과대 평가될 가능성이 큰 것으로 나타났다. 비중, 자연 함수비, 자연상태의 습윤단위중량, #200 통과율 그리고 균등계수의 입력변수를 갖는 $I_{5-1}$$H_{30-30}$$O_1$의 신경망에서 다른 신경망 구조들보다 잦은 지역 최소점에 수렴하는 결과를 보였다. 본 연구에서 사용한 모든 신경망 구조에서 시험결과와 신경망 결과의 상관계수는 0.9이상으로 나타나 높은 상관성을 나타내었다. 특히, 인공 신경망에 의한 예측결과는 다양한 영향인자들 중에서 비중, 자연 함수비, 자연상태의 습윤단위중량 그리고 #200 통과율의 4개 변수만으로도 C값을 예측할 수 있었으며, 상관계수는 0.96으로 나타났다.다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.33 no.5A
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• pp.494-499
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• 2008

In this study, a Software Defined Radio(SDR) technology-based digital filtering technique applicable to a multiple channel processing system such as a wireless mobile communication system using Code Division Multiple Access(CDMA) technology is proposed. The technique includes a micro-processor to redesign Finite Impulse Response(FIR) filter coefficients according to specific system information and to download the filter coefficients to one digital Band Pass Filter(BPF) to reconfigure another system. The feasibility of the algorithm is verified by implementing a multiple channel signal generator that is reconfigurable to other system profiles, including those for a CDMA system and a WCDMA system on identical hardware platform.

• The Journal of the Korea Contents Association
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• v.16 no.7
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• pp.221-230
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• 2016

The public mostly get the information regarding real estate policy not from the press release of the government but from news articles. This type of information, though, might be delivered in a different frame depending on inclination of media or press. The media runs the articles within its own frame, so that it often conveys either expectation or concern depending on its inclination. This study analyzed the articles regarding 'Agreement to revise three major real estate regulations to perk up property market' and examined how the real estate policy imprinted in them depending on the disposition of the press. The results showed that the conservative press ran articles within a positive frame expressing favorable expectation. On the other hand, progressive press mostly kept neutral or unfavorable tone on the same regulations within the negative frame. Therefore, it was confirmed that there exist different frames within articles depending on their disposition.

• Korean Journal of Food Science and Technology
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• v.34 no.3
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• pp.444-448
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• 2002

The waste brine gained from successively reused brine during kimchi manufacturing can cause serious water pollution. We investigated the filtration effects on the physicochemical characteristics and microbial counts of the waste brine. Chinese cabbage was salted for five times successively, and the waste brines were filtered through sand and active carbon column. While original values of salinity and soluble solid contents of waste brine were 15.4% and $18.0^{\circ}$Brix$, respectively, we observed decrease of them to 0.1% and $0.0^{\circ}$Brix$, respectively, after filtration of the waste brine through sand followed by active carbon column. The filtration also recover pH value of the waste brine to its original value, which was decreased by successive salting from 8.3 to 6.0. We also observed that COD of waste brine increased to 63.2 ppm after five times of salting but decreased to 5.1 ppm after active carbon filtration. Total viable count was also increased with successive 5 steps of salting and was not detected after active carbon-filtration.

• Economic and Environmental Geology
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• v.34 no.4
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• pp.355-373
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• 2001

Palaeomagnesim of Paleozoic Tuwibong Type Sequence in Yemi area was studied with a total of 256 core-samples collected from 23 sites. The study area (geographical coordinates: 37.l8$^{\circ}$N, l28.610E) is located between Taebaek and Yongwol belonging to the northeastern part of the Okchon Belt. Thermal cleaning was a most effective method to extract stable characteristic remanent magnetization (ChRM) direction, even though AF cleaning also worked on some specimens. Mean ChRM direction of the Cambrian Hwajol Formation was different from the present-day field direction and showed maximum clustering (max. k value) at 100% bedding-tilt correction. However, it could not pass the fold test. Ordovician Makkol and Kosong Limestones as well as Permian Sadong and Kobangsan Formations have very weak NRM, and were remagnetized into the present-day field direction. ChRM directions from the Carboniferous Hongjom Formation passed both fold and reversal tests. IRM experiments and blocking temperature spectrum indicate that both magnetite and haematite are carrier of the primary magnetization. Palaeomagnetic pole position from the Carboniferous Hongjom Formation is very similar to that of contemporary North China Block (NCB) suggesting that the study area was a part of, or located very near to, the NCB during Carboniferous.