• Nuclear Engineering and Technology
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• 제54권8호
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• pp.2898-2914
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• 2022

When evaluating energy balance and temperature in reduced-scale fire experiments, which are conducted as an alternative to full-scale fire experiments, it is important to consider the similarity in the scale among these experiments. In this paper, a method considering the similarity of energy balance is proposed for setting the conditions for reduced-scale experiments of mechanically ventilated compartment fires. A small-scale fire experiment consisting of various cases with different compartment geometries (aspect ratios between 0.2 and 4.7) and heights of vents and fire sources was conducted under mechanical ventilation, and the energy balance in the quasi-steady state was evaluated. The results indicate the following: (1) although the compartment geometry varies the energy balance in a mechanically ventilated compartment, the variation in the energy balance can be evaluated irrespective of the compartment size and geometry by considering scaling factor F (∝h_effA_wR_T, where h_eff is the effective heat transfer coefficient, A_w is the total wall area, and R_T is the ratio of the spatial mean gas temperature to the exhaust temperature); (2) the value of R_T, which is a part of F, reflects the effects of the compartment geometry and corresponds to the distributions of the gas temperature and wall heat loss.

• 한국콘텐츠학회논문지
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• 제9권5호
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• pp.137-144
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• 2009

경북 문화콘텐츠산업은 소비지향적 구조, 영세성, 부족한 인프라, 불균형, 전략 부재 등의 문제점을 안고 있다. 하지만, 경북 문화콘텐츠산업은 풍부한 문화자원, 문화콘텐츠산업의 전망, 미래의 효과적인 육성전략으로 인해서 그 가능성이 크다고 할 수 있다. 그리고 육성방안으로는 문화원형의 디지털화, 유교 문화의 에듀테인먼트, 전통문화디지털센터의 구축, 장소마케팅, 다큐영상원 건립, 문화 리터러시, 작은 영상 지향, 글로벌 도시와 문화거점 도시의 육성, 킬러 콘텐츠 개발, 관광자원 개발, 차별화 전략 등이 있다. 문화콘텐츠산업은 고부가가치, 관련 산업에 대한 영향력, 디지털문화콘텐츠의 효용성, 시장 규모의 확대, 빠른 성장속도 등의 측면에서 경북도 문화콘텐츠산업을 적극적으로 육성해야 할 필요성이 있다.

• 디지털산업정보학회논문지
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• 제12권3호
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• pp.33-54
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• 2016

In the modern society based on information and communication, which is exposed to the risks of a lot of information security breaches, corporate information assets may be an economical scale in a country. Most of damages derived from corporate technological information leak often occur in small and medium corporations. Although many information security managers in corporations have focused on certification systems such as information security management system, small and medium corporations are poorly aware of the information security, and their environments surrounding it should be also improved. In addition, it is difficult to expect spontaneous participations in it, since the sustainable information security management systems are often not forced to be certified. Thus, the purpose of this study is to examine plans to improve small and medium corporations' technological protections by using some component of the information security management system. On the basis of this examination, it also attempts to discuss some methods for effective and efficient information security in the small and medium corporations' technological protections.

• 한국지능시스템학회논문지
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• 제19권6호
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• pp.766-772
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• 2009

일반적으로 풍력발전은 광범위한 영역에 지속적인 바람을 요구하는 대형 시스템 위주로 개발이 되어왔다. 그러나 소형 풍력발전 시스템은 사용자에게 보다 친숙하고, 대형에 비해 보다 광범위한 적용이 가능하다는 점 때문에 최근 이에 대한 관심이 증가되고 있는 실정이다. 이에 본 연구에서는 배터리 충전에 효과적으로 도입될 수 있는 도시형 풍력발전을 위한 프로토타입 시스템에 대해 기술하며, 프로토타입 시스템에 효과적으로 도입될 수 있는 인공신경망 기반의 최대 전력점 추종 알고리즘을 제안하고자 한다. 또한 Matlab기반의 다양한 시뮬레이션 및 실제 시스템 설계를 통해 제안된 기법의 유용성을 확인하고자 한다.

• 한국미생물·생명공학회지
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• 제47권2호
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• pp.234-241
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• 2019

In Korea, traditional doenjang is manufactured using the conventional method at home and by small-scale enterprises. Because this age-old process depends on natural inoculation of various microorganisms, it is difficult to reproduce or maintain consistency in the final product quality across batches. Moreover, doenjang occasionally prepared by this method raises safety concerns related to aflatoxin, biogenic amine, and Bacillus cereus contamination. To develop starters that can be conveniently used at home or in small industry settings for the manufacturing of safe and flavor-improved doenjang, autochthonous microbe starters were developed in dried forms as ready-to-use starters. Each starter powder prepared by heat- or freeze-drying methods remained stable even after 24-week storage. These ready- to-use starter powders were successfully applied to lab-scale fermentation for the production of safe and flavor-improved doenjang. We believe that these ready-to-use starter powders will benefit small-scale enterprises in the manufacturing of doenjang of good reproducible quality.

• 한국정밀공학회지
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• 제18권10호
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• pp.69-75
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• 2001

Systems engineering has been utilized in system development primarily for large-scale projects or commercial large-scale systems during the last several decades. We can understand why it would be useful to apply systems engineering to the development of a relatively small system. However, it is difficult to effectively carry out a project due to the complexity in applying the methods of systems engineering. To apply systems engineering to the development of a small system, the system engineering processes should be tailored. We established a requirements driven system design process(RDSDP) that can effectively carry out the system design far a small system. RDSDP is a system design process that treats all the requirements thoroughly and effectively. This is applied by the designer according to a standardized and systematized process during the first phase in design, in which system specifications are made. By using RDSDP, we can affect a reduction of the number of redesign phases in the process of the system design, shorten the period for to make specification, which will then cause the system to succeed in the actual application.

• 월간산업보건
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• 제8호통권244호
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• pp.54-55
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• 2008

• 식품산업과 영양
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• 제21권1호
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• pp.31-33
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• 2016

• Design & Manufacturing
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• 제11권1호
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• pp.39-44
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• 2017

The domestic mold industry is composed of 6,560 small and medium sized mold companies as of 2015. The structure of mold industry centered on less than 10 people in the past has been improved in the direction of increasing number of medium and large scale companies with more than 20 competitors with global competitiveness and has maintained its position as the world's second largest mold exporter with global competitiveness. Nevertheless, the manpower structure and corporate competitiveness structure of the mold industry is very high, with the proportion of production manpower reaching 70% and shortage rate of 10% or more in order to respond to the orders of customers. However, the development base for new employees with technological skills required by the industrial field is poor, and the inflow of young people is very limited due to factors such as the avoidance of small and medium enterprises and production jobs. It is expected that the labor shortage of mold enterprises will be further increased in the future. In the mold industry, due to the characteristics of small quantity multi-product production corresponding to the demand of the consumer, many production processes are individually and independently carried out, resulting in low labor productivity, and the structural time required for the worker to increase the working time Due to limitations, the working hours per week of the employees are about 50 hours. The implementation of the working time reduction bill, which is recently promoted by the government, is a crisis factor. In order to cultivate the mold industry, it is necessary to expand the base of molds to meet the intensification of global competition, the convergence of technologies to actively respond to the restructuring of the industrial structure, and the response to the new industry, It is necessary to improve labor productivity through policies such as development and dissemination of system, and to secure price, delivery and quality competitiveness in global market.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2012년도 춘계학술발표대회
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• pp.1163-1166
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• 2012

프로젝트의 성공을 위해서는 프로젝트 품질을 관리해야 한다. 본 논문에서는 중소기업의 프로젝트 품질관리 개선을 위해 품질관리 국제모델과 감리프레임워크를 참고하여 개발한 프로젝트 품질관리 프레임워크를 통해 품질관리 개선사례를 제시한다. 제시된 품질관리 프레임워크를 23개 중소기업에 적용한 사례를 살펴보고 품질관리를 통해 프로젝트 목표달성에 기여했음을 보인다.