• 설비공학논문집
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• 제5권4호
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• pp.278-284
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• 1993

A simplified TAC method was developed for the selection of design temperature and absolute humidity for peak cooling and heating load calculation with ETD method. And the design data of the 11 major cities in Korea were obtained. Based on the simplified TAC method, the design data for summer and autumn cooling season were selected by the TAC 5.0% of July through August and TAC 5.0% of October, respectively. But the design data for winter heating season were selected by the conventional TAC 2.5% of the full winter season.

• 설비공학논문집
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• 제4권4호
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• pp.316-322
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• 1992

A simplified TAC method was developed for the selection of solar atmospheric transmittance data fundamental to the calculation of design solar radiation for the peak cooling load calculation using ETD method. The summer and autumn solar atmospheric transmittance data of the 11 major cities in Korea were obtained. Based on the simplified TAC method, the atmospheric transmittance data were selected by the TAC 2.5% of July instead of the TAC 2.5% of June through September for summer and the TAC 5.0% of October instead of the TAC 2.5% of October and November for autumn. Results show that the atmospheric transmittance data at solar noon were in the range of 0.61-0.66 for summer and 0.78-0.82 for autumn except for Pusan and Incheon.

• 한국항해항만학회지
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• 제29권8호
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• pp.755-761
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• 2005

본 논문에서는 OFDM 방식의 문제점으로 지적되고 있는 송신단에서의 PAR 특성을 고려하여 고속 적응형 PTS 기법과 SLM 기법을 결합한 SLM-PTS 결합기법을 제안하였다. 또한, PAR 저감기법을 적용한 시스템을 평가하기 위하여 ETD-Turbo 부호를 사용한 COFDM 시스템을 구성한 후 성능을 평가하였다. 분석 결과 제안된 SLM-PTS 기법이 연산량을 경감시키며 전반적으로 우수한 PAR 저감성능을 보임을 알 수 있었다. 특히 Combine 3의 경우 10-5 BER을 기준으로 약 $3.7\~3.9\;dB$ 정토의 개선된 PAR 성능을 보였다. 또한, 터보부호를 사용한 경우 전반적으로 우수한 PAR 성능을 보임을 알 수 있었고, ETD-Turbo 부호를 적응한 경우 추가적으로 약 0.5 dB 정도의 성능 개선효과가 있음을 알 수 있었다.

• Mass Spectrometry Letters
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• 제15권2호
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• pp.107-119
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• 2024

We aimed to develop a suitable quantification method for detecting asparagine deamidation and aspartic acid isomerization in peptide mapping using LC-MS. Our assessment of its validity and suitability involved comparing its quantitative findings with those obtained from cation-exchange chromatography and capillary electrophoresis methods. By subjecting trastuzumab to rigorous conditions to induce these modifications, we validated the efficacy of this new analytical method in peptide mapping via LC-MS, evaluating both qualitative and quantitative aspects of asparagine deamidation and aspartic acid isomerization. Our investigation underscored the significance of enzyme selection and the presence of miss-cleaved or non-specific peptides in achieving accurate quantitative results. The experimental results demonstrated a strong correlation with results from cation-exchange chromatography and capillary electrophoresis analyses, confirming the reliability of the LC-MS based peptide mapping approach.

• 한국작물학회지
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• 제28권3호
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• pp.285-290
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• 1983

수도의 안전재배기간을 설정하기 위하여 수원등 9개지역의 기온조건을 분석하여 재배시기별 기준온도의 출현확율을 이용하는 방안과 평년 평균기온을 이용하는 H-U법과 비교검토하고 확율법에 의한 지역별 안전 이앙기, 출수기 및 성숙기를 설정하였다. 확율법에 의한 작기는 기상의 년차별 변이에 대한 안전성을 기할 수 있었으나 H-U법은 안정성이 적었다. 확율법에 의한 이앙기 조한일은 출현율 75-90%를 기대할 수 있는 경우 중북부지역은 5월 12일-22일, 동해연변지는 5월 15일-25일, 남부지방은 5월 4일-16일이었다. 춘천지방에서는 이앙에서 출수까지 소요정산온도가 1$700^{\circ}C$ 이상인 중만생종 품종은 부적합한 것으로 보이며 동해안변지인 강릉에서는 190$0^{\circ}C$이상 만생종은 부적한 것으로 판단된다. 호적출수기는 남부지방에서 통일계품종은 8월 초순, 일반계품종은 8월 중순이며, 강릉과 춘천지방에서는 통일계품종의 안전출수기간이 짧아 재배가 부적합한 것으로 나타났다. 성숙기 만한일은 중북부 지방에서 9월 30일-10월 2일, 동해연변지에서 10월 13일-14일, 그리고 남부지방에서 10월 7일-14일이며, 극초상일에 가까워 수확기에 상해에 대한 안정성도 기대할 수 있다.

• 산업경영시스템학회지
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• 제19권37호
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• pp.127-136
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• 1996

Due to the development of technology, urbanization, industrialization, etd. at modern times, even the individual view of value has changed in variety. That means the change of each consumcer's life-style and even that of propensity to consume. In that regard, the modern, commercial space became to be increasingly included to specialization and complication. Such specialization and complication of the commercial space can be thought to be a positive response of enterprises to satisfy the needs or desire of consumers who become diversified. In this study, some new models in the method of the planning and designing of the S.I.P(Shop Identity Program). intended to research into as follows ; - As the background of the advent of the multi-used shopping complex, changes in consumer life-style and propensity to consume according to social and economical changes were intended to be studied through various statistical data literature. - For the study of the characteristics, constituent conditions, and planning operation of the future multi used shopping complex in the marketing aspect of enterprises, it was intended to study centered on the theory of consumer behavior and that of retail marketing. - In the process of the spatial design of the multi-used shopping complex, it was tried that a designing process to materialize a target of the discrimination and orderly arrangement of stores be progressed. In the process of materializing a target based on both corporate image and 'brand' image in designing.

• Advances in aircraft and spacecraft science
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• 제10권1호
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• pp.19-49
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• 2023

The present study proposes a theoretical and numerical investigation on the dynamic response behaviour of a functional graded (FG) ceramic-metal tapered rotor shaft system, by the differential quadrature finite elements method (DQFEM) to identify the natural frequencies for modelling and analysis of the structure with suitable validations. The purpose of this paper is to explore the influence of heat gradients on the natural frequency of rotation of FG shafts via three-dimensional solid elements, as well as a theoretical examination using the Timoshenko beam mode, which took into account the gyroscopic effect and rotational inertia. The functionally graded material's distribution is described by two distribution laws: the power law and the exponential law. To simulate varied thermal conditions, radial temperature distributions are obtained using the nonlinear temperature distribution (NLTD) and exponential temperature distribution (ETD) approaches. This work deals with the results of the effect on the fundamental frequencies of different material's laws gradation and temperature gradients distributions. Attempts are conducted to identify adequate explanations for the behaviours based on material characteristics. The effect of taper angle and material distribution on the dynamic behaviour of the FG conical rotor system is discussed.

• 항공우주정책ㆍ법학회지
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• 제22권2호
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• pp.155-175
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• 2007

As intellectual terror threats increase, we feel the limit in coping with those threats and the things we do are placing traditional X-ray machines & ETD and increasing aviation security staffs. In fact, even if air transportation system is the fast and most efficient transportation methods, it is true that there are many inconveniences to endure due to terror threats. In the name of security, even if we make a lot of efforts and time to screen both good-natured passengers, baggage, cargo and suspicious passengers, it is impossible to screen perfectly and it is not an efficient methods. Therefore, we introduce profiling system that reduce the effort to screen good-natured passengers but focus on screening dangerous passengers and baggages. Profiling system strengthens aviation security, using the concept "Selection & Concentration". Israel started to introduce manual profiling system in aviation security, which is interviewing suspicious passengers and it has been used in crime investigation since 1960. And it has been upgraded and diversified to CAPPS(Computer Assisted Passenger Screening Program) and SPOT(Screening Passenger by Observation). So, this theses is to study on the concept & kind of profiling and profiling methods adopted in airlines. Also it presents the method of introduction of profiling system in Korea and the necessity of making law on it.

• 한국수자원학회논문집
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• 제40권8호
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• pp.655-663
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• 2007

본 연구는 면적이 작은 도시유역에 적용하기 위한 강우의 시간분포방법을 제안하였다. 이를 위하여 유역의 특성을 고려한 Interevent Time Definition(ETD) 결정방법과 3시간 미만의 강우를 포함한 무차원 누가우량곡선을 제안하였다. 새롭게 제시된 IETD 결정방법은 호우 사상의 종료 시점으로부터 직접유출의 종료 시점까지의 기간을 IETD로 정의하였다. 제안된 IETD 결정방법을 사용하여 중랑 배수구역에 대한 면적-IETD 관계곡선을 유도하였다. 제안된 강우분포모형을 4개의 도시 유역에 적용하여 10년빈도 2시간 강우를 시간분포 시켰으며, SWMM을 사용하여 유출수문곡선을 산정하였다. 산정된 유출수문곡선을 Huff 방법으로 산정한 유출수문곡선과 비교하였다. 비교한 결과 새롭게 제시된 강우의 시간분포 방법에 의한 유역의 첨두 홍수량은 Huff 모형에 의한 결과들보다 $11\sim15%$크게 나타났으며, 따라서 기존의 Huff 모형을 도시유역에 그대로 적용하는 것은 유출을 과소평가 할 위험성을 내포하고 있다.

• The Korean Journal of Physiology and Pharmacology
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• 제19권6호
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• pp.543-547
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• 2015

We investigated the combined moisturizing effect of liposomal serine and a cosmeceutical base selected in this study. Serine is a major amino acid consisting of natural moisturizing factors and keratin, and the hydroxyl group of serine can actively interact with water molecules. Therefore, we hypothesized that serine efficiently delivered to the stratum corneum (SC) of the skin would enhance the moisturizing capability of the skin. We prepared four different cosmeceutical bases (hydrogel, oil-in-water (O/W) essence, O/W cream, and water-in-oil (W/O) cream); their moisturizing abilities were then assessed using a $Corneometer^{(R)}$. The hydrogel was selected as the optimum base for skin moisturization based on the area under the moisture content change-time curves (AUMCC) values used as a parameter for the water hold capacity of the skin. Liposomal serine prepared by a reverse-phase evaporation method was then incorporated in the hydrogel. The liposomal serine-incorporated hydrogel (serine level=1%) showed an approximately 1.62~1.77 times greater moisturizing effect on the skin than those of hydrogel, hydrogel with serine (1%), and hydrogel with blank liposome. However, the AUMCC values were not dependent on the level of serine in liposomal serine-loaded hydrogels. Together, the delivery of serine to the SC of the skin is a promising strategy for moisturizing the skin. This study is expected to be an important step in developing highly effective moisturizing cosmeceutical products.