• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2002년도 합동 추계학술대회 논문집 정보 및 제어부문
• /
• pp.178-182
• /
• 2002

For action selection as well as teaming, simple associations between stimulus and response have been employed in most of literatures. But, for successful task accomplishment, it is required that artificial life system can team and express behavioral sequences. In this paper, we propose a novel action-selection-mechanism to deal with behavioral sequences. For this, we define behavioral motivation as a primitive node for action selection, and then hierarchically construct a tree with behavioral motivations. The vertical path of the tree represents behavioral sequences. Here, such a tree for our proposed ASM can be newly generated and/or updated, whenever a new behavioral sequence is learned. To show the validity of our proposed ASM, three 2-D grid world simulations will be illustrated.

• 대한안전경영과학회지
• /
• 제11권1호
• /
• pp.205-211
• /
• 2009

In reality, distribution planning for a supply chain is established using a certain probabilistic distribution estimated by forecasting. However, in general, the demands used for an actual distribution planning are of deterministic value, a single value for each of periods. Because of this reason the final result of a planning has to be a single value for each period. Unfortunately, it is very difficult to estimate a single value due to the inherent uncertainty in the probabilistic distribution of customer demand. The issue addressed in this paper is the selection of single demand value among of the distributed demand estimations for a period to be used in the distribution planning. This paper proposes an efficient demand selection scheme for minimizing total inventory costs while satisfying target service level under the various experimental conditions.

• 농업과학연구
• /
• 제50권4호
• /
• pp.953-966
• /
• 2023

As the importance of renewable energy diffusion spreads, promotion of sustainable renewable energy projects such as agrivoltaics is expected to accelerate. Furthermore, to promote agrivoltaics projects, it must be considered the legislation related to agrivoltaics and Chungnam Province's local policy. This research focuses on the selection of the most suitable sites for agrivoltaics installations in Chungnam Province in South Korea. Therefore, the process of this research was as follows. First, the legislation related to agrivoltaics and local policy in Chungnam Province were identified. Second, it employs an analytic hierarchy process (AHP) to consider important criteria and their weights for site selection. Third, based on the weights calculated AHP, geographic information system (GIS) was performed to select most suitable location selection of agrivoltaics installations in Chungnam Province. The analysis identified approximately 60 promising most suitable location for agrivoltaics installations in Chungnam Province, primarily in the northern part of Chungnam Province. These areas are expected to meet electricity demands in nearby regions since these are relatively adjacent to Gyeonggi Province. According to the results of research, policy suggestions related to agrivoltaics were presented separately into the agricultural sector and the electricity power sector. The study's results serve as a valuable resource for future national-level candidate site selection for agrivoltaics projects.

• 한국건설관리학회논문집
• /
• 제5권3호
• /
• pp.55-62
• /
• 2004

본 연구는 유능한 민간투자 사업시행자를 선정하기 위한 절차모델을 제안한 것이다. 국내$\cdot$외 문헌과 기존 방식 및 제도에 대한 검토$\cdot$분석을 통하여 국내 민간투자 사업시행자 선정 절차의 현황과 문제점을 파악하였다. 적격심사 및 협상절차의 불합리, 사업 참여주체 간 의사소통$\cdot$정보교환 기회 부족 등 문제점을 도출하였으며, 각각의 문제점들에 대한 대안을 모색하였다. 면담조사 및 설문조사$\cdot$분석을 통하여 국내 실정에 적합한 대안을 설정하고 기존의 절차를 혁신한 새로운 사업시행자 선정모델을 제안하였다. 사전자격심사(PQ)제도의 시행, 사업계획 평가 및 협상 절차의 개선, 민간의 창의와 효율성 도입, 의사소통 및 정보교환의 활성화를 촉진할 수 있는 내용을 선정절차에 포함하였다. 또한 전체 사업시행자 선정이 객관적이고 투명한 환경에서 이루어 질 수 있도록 사업시행자 선정 Team의 구성$\cdot$운영을 제안하였다.

• 인터넷정보학회논문지
• /
• 제24권6호
• /
• pp.155-160
• /
• 2023

국방부 또는 공공기관에서 관리하는 모든 데이터베이스 및 시스템의 데이터는 일정 품질 이상 보장하는 것이 원칙이나 대부분 다수의 정보시스템을 구축·운영하기 때문에 현실적으로 모든 시스템에 대한 데이터 품질관리는 한계가 있다. 국방데이터는 업무의 특성상 공개되지 않는 데이터가 대부분이고 군에서 업무의 필요 및 중요도에 따라 전략적으로 개발되거나 통합되어 관리하는 시스템이 많다. 또한, 무기체계에서 발생하는 센서데이터, 비정형데이터, 인공지능 학습데이터 등 데이터 품질관리가 필요한 다양한 유형의 많은 데이터가 축척되고 생성되고 있다. 그러나, 국방데이터를 위한 데이터 품질관리 가이드 및 품질관리 대상 선정에 대한 가이드가 부재한 상황이고, 공공데이터 품질관리 매뉴얼의 기준에 따라 국방데이터의 품질관리 대상 데이터베이스 및 시스템을 선정하기에는 선정 기준이 모호하며 실무 담당자에 의존적이다. 따라서, 본 논문에서는 국방데이터의 품질관리를 위한 대상 체계 선정 기준에 대하여 제안하며, 제안한 선정기준들과 기존 매뉴얼의 선정기준과의 관계성에 대하여 기술한다.

• Molecules and Cells
• /
• 제28권3호
• /
• pp.209-213
• /
• 2009

Caenorhabditis elegans is a free living soil nematode and thus in its natural habitat, C. elegans encounters many different species of soil bacteria. Although some soil bacteria may be excellent sources of nutrition for the worm, others may be pathogenic. Thus, we undertook a study to understand how C. elegans can identify their preferred food using a simple behavioral assay. We found that there are various species of soil bacteria that C. elegans prefers in comparison to the standard laboratory E. coli strain OP50. In particular, two bacterial strains, Bacillus mycoides and Bacillus soli, were preferred strains. Interestingly, the sole feeding of these bacteria to wild type animals results in extended lifespan through the activation of the autophagic process. Further studies will be required to understand the precise mechanism controlling the behavior of identification and selection of food in C. elegans.

• Nuclear Engineering and Technology
• /
• 제46권2호
• /
• pp.273-280
• /
• 2014

The spectrum weighted responses of various detectors were calculated to provide guidance on the proper selection and use of survey instruments on the basis of their energy response characteristics on the neutron fields. To yield the spectrum weighted response, the detector response functions of 17 neutron-measuring devices were numerically folded with each of the produced calibration neutron spectra through the in-house developed software 'K-SWR'. The detectors' response functions were taken from the IAEA Technical Reports Series No. 403 (TRS-403). The reference neutron fields of 21 kinds with 2 spectra groups with different proportions of thermal and fast neutrons have been produced using neutrons from the $^{241}Am$-Be sources held in a graphite pile, a bare $^{241}Am$-Be source, and a DT neutron generator. Fluence-average energy ($E_{ave}$) varied from 3.8 MeV to 16.9 MeV, and the ambient-dose-equivalent rate [$H^*(10)/h$] varied from 0.99 to 16.5 mSv/h.

• 한국균학회소식:학술대회논문집
• /
• 한국균학회 2014년도 추계학술대회 및 정기총회
• /
• pp.23-23
• /
• 2014

There are many yeast strains have been discovered for industrial usage in global scale. In the point of view for the alcoholic fermentation performance and producing alcoholic beverage products, recently many countries have known about the importance of microorganisms as a valuable resource. Discovered with well performed yeasts have potential industrial application in diverse ways such as foods, beverages, cosmetics, pharmaceutical functions, and so on. In Korea, the yeast research has not been sufficiently performed especially for distilled spirits industry. As a result, not so little manufacturers use exotic yeasts from overseas even included the expensive royalties. Besides of those, to produce distilled spirits, many manufacturers do not use specialized yeast for distilled spirits. Distiller's characterized yeasts such as whisky, brandy, vodka, Japanese shochu and awamori, are all well-known industrialized. For decades, the distillers, except us, have selected, developed, and practised yeasts in accordance with distilled spirits characters. This study is about selection and industrial application of yeasts for the Korean pot distilled spirits. Finally 7 yeast strains were selected among over 1,000 yeasts from the traditional Nuruks, through the essential related tests based on brewing and distilling science. The selected yeasts show the appropriate characteristics of distilled spirits. The result of this study could help our distilled spirits industry be activated and stand independent from the exotic microbes.

• 품질경영학회지
• /
• 제49권3호
• /
• pp.421-431
• /
• 2021

Purpose: For improving outgoing quality, this study presents a novel sampling framework based on predictive analytics. Methods: The proposed framework is composed of three steps. The first step is the variable selection. The knowledge-based and data-driven approaches are employed to select important variables. The second step is the model learning. In this step, we consider the supervised classification methods, the anomaly detection methods, and the rule-based methods. The applying model is the third step. This step includes the all processes to be enabled on real-time prediction. Each prediction model classifies a product as a target sample or random sample. Thereafter intensive quality inspections are executed on the specified target samples. Results: The inspection data of three Samsung products (mobile, TV, refrigerator) are used to check functional defects in the product by utilizing the proposed method. The results demonstrate that using target sampling is more effective and efficient than random sampling. Conclusion: The results of this paper show that the proposed method can efficiently detect products that have the possibilities of user's defect in the lot. Additionally our study can guide practitioners on how to easily detect defective products using stratified sampling

• Journal of Power Electronics
• /
• 제16권4호
• /
• pp.1298-1305
• /
• 2016

This paper presents the development of a short-circuit protection mechanism on a high voltage switch (HVS) board which is built by a series connection of semiconductor switches. The HVS board is able to quickly detect and limit the peak fault current before the signal board triggers off a gate signal. Voltage clamping techniques are used to safely turn off the short-circuit current and to prevent overvoltage of the series-connected switches. The selection method of the main devices and the development of the HVS board are described in detail. Experimental results have demonstrated that the HVS board is capable of withstanding a short-circuit current at a rated voltage of 10kV without a di/dt slowing down inductor. The corresponding short-circuit current is restricted to 125 A within 100 ns and can safely turn off within 120 ns.