• 예술인문사회 융합 멀티미디어 논문지
• /
• 제7권12호
• /
• pp.101-110
• /
• 2017

2016년 통계청의 자료에 따르면 법인의 직무발명 비중이 늘어나고 있음에도 불구하고, 정당한 직무발명보상을 실시하지 않는 기업은 56.9%나 되는 것으로 집계되었다. 하나의 원인은 객관적인 특허 기여율 산출 방식과 정당한 보상의 명확한 기준이 정립되지 못했기 때문이다. 본 연구에서는 정당한 직무발명 보상금 산정을 위해 DCF (Discounted cash flow)와 AHP (Analytical hiearchy process) 방법론을 활용한 새로운 특허 기여율 산출 방식을 제시하고 이를 활용하여 실제 사례를 통해 검증하였다. 그 결과 기존 판례의 보상금 산정보다 2.3배 높은 금액이 산정되었으며 이는 정당한 보상금 산정에 있어 명확한 기준이 정립되지 않아 발명자 보호에 매우 미흡한 현 상황에서 조금 더 발명자를 보호할 수 있는 객관적인 보상금 산정 기준을 제시하고 있다는 점에서 의의가 있다. 본 방법론은 계산방법과 절차가 단순하여 중소기업을 위한 직무발명 보상 기법으로 활용 가능할 것으로 기대한다.

• 대한토목학회논문집
• /
• 제32권2D호
• /
• pp.95-101
• /
• 2012

본 연구에서는 복합환승센터 접근교통수단의 정류장시설 배치기준을 개발하였다. 복합환승센터의 시설배치기준은 접근교통수단(Access Mode)의 승하차시설의 상대적인 위치선정에 관한 것으로 접근교통수단 하차 후 주교통수단(Main Mode)의 승하차 시설까지 이동거리를 최소화하도록 기준을 제시하였다. 이동거리 중 계단은 평면거리 보다 큰 가중치를 적용하였고 에스컬레이터는 평면거리 보다 적은 가중치를 적용하였다. 효과척도로서 접근교통수단별 이용자 가중평면환산거리를 채택하였다. 최종적으로는 본 연구에서 제시된 기준을 기존 김포공항에 적용하여 접근교통수단의 승하차 시설의 위치와 접근시설의 개선방안을 제시하였다.

• Nuclear Engineering and Technology
• /
• 제51권4호
• /
• pp.1098-1108
• /
• 2019

Korea's first commercial nuclear power plant at Kori site was permanently shut down in 2017 and is currently in transition stage. Preparatory activities for decommissioning such as historical site assessment, characterization, and dismantling design are being actively carried out for successful D&D (Dismantling and Decontamination) at Kori site. The ultimate goal of decommissioning will be to ensure the safety of workers and residents that may arise during the decommissioning of nuclear facilities and, thereby finally returning the site to its original status in accordance with the release criteria. Upon completion of decommissioning, the resident's safety at a site released will be assessed from the evaluation of dose caused by radionuclides expected to be present or detected at the site. Although the U.S. commercial nuclear power plants with decommissioning experience use different site release criteria, most of them are 0.25 mSv/y. In Korea, both the unrestricted and restricted release criteria have been set to 0.1 mSv/y by the Nuclear Safety and Security Commission. However, since the dose is difficult to measure, measurable concentration guideline levels for residual radionuclides that result in dose equivalent to the site release criteria should be derived. For this derivation, site reuse scenario, selection of potential radionuclides, and systematic methodology should be developed in planning stage of Kori site decommissioning. In this paper, for calculation of a preliminary site-specific Derived Concentration Guideline Levels (DCGLs) for the Nuclear Power Plant site, a novel approach has been developed which can fully reflect practical reuse plans of the Kori site by taking into account multiple site reuse scenarios sequentially, thereby striking a remarkable distinction with conventional approaches which considers only a single site scenario.

• Journal of Advanced Marine Engineering and Technology
• /
• 제29권7호
• /
• pp.785-794
• /
• 2005

Modern ship hulls of large oil carriers and container carrers have become more flexible with scantling optimization and increase in ship length. On the other hand. as the demand for power has increased with the ship size. shaft diameters have become larger and stiffer. Consequently. the alignment of the propulsion system has become more sensitive to hull girder deflections. resulting in difficulties in analyzing the alignment and conducting the alignment procedure. Accordingly. the frequency of shaft alignment related bearing damages has increased significantly in recent years. The alignment related damages are mostly attributed to inadequate analyses. changes in the design of the vessel. shipyards' practices in conducting the alignment. and a lack of well defined analytical criteria. The hull deflections should be considered at the design stage to minimize the bearing damage caused by hull deflection. Hull deflections can be estimated by analytical approach and reverse calculation using the measured data. The hull girder deflection analysis using the reverse calculation will be introduced in this paper.

• 소음진동
• /
• 제7권2호
• /
• pp.247-254
• /
• 1997

In the case of a precision equipment, it requires a vibration free environment to provide its proper function. Especially, lithography and inspection devices, which have sub-nanometer class high accuracy and resolution, have come to necessity for producing more improved giga class semiconductor wafers. This high technology equipments require very strict environmental vibration standard in proportion to the accuracy of the manufacturing, inspecting devices. The vibration criteria are usually obtained either by the real vibration exciting test on the equipment or by the analytical calculation. This paper proposes a new method to solve this problem at a time. The permissible vibration level to a precision equipment can be easily obtained by analyzing a process of Frequency Response Function. This paper also demonstrates its effectiveness by applying the proposed method to finding the vibration criteria of a Computer Hard Disk Driver by Impact Test.

• 한국초전도ㆍ저온공학회논문지
• /
• 제17권2호
• /
• pp.45-49
• /
• 2015

It has been well known that a toroid is the inevitable shape for a high temperature superconducting (HTS) coil as a component of a large scale superconducting magnetic energy storage system (SMES) because it is the best option to minimize a magnetic field intensity applied perpendicularly to the HTS wires. Even though a perfect toroid coil does not have a perpendicular magnetic field, for a practical toroid coil composed of many HTS pancake coils, some type of perpendicular magnetic field cannot be avoided, which is a major cause of degradation of the HTS wires. In order to suggest an optimum design solution for an HTS SMES system, we need an accurate, fast, and effective calculation for the magnetic field, mechanical stresses, and stored energy. As a calculation method for these criteria, a numerical calculation such as an finite element method (FEM) has usually been adopted. However, a 3-dimensional FEM can involve complicated calculation and can be relatively time consuming, which leads to very inefficient iterations for an optimal design process. In this paper, we suggested an intuitive and effective way to determine the maximum magnetic field intensity in the HTS coil by using an analytic and statistical calculation method. We were able to achieve a remarkable reduction of the calculation time by using this method. The calculation results using this method for sample model coils were compared with those obtained by conventional numerical method to verify the accuracy and availability of this proposed method. After the successful substitution of this calculation method for the proposed design program, a similar method of determining the maximum mechanical stress in the HTS coil will also be studied as a future work.

• 한국화재소방학회논문지
• /
• 제11권1호
• /
• pp.11-19
• /
• 1997

본 논문은 도시지역에있어 위해 활동주변에 위치한 일반대중에 미치는 위험성의 계량 방법을검토했 다. 이 연구는 대다수의 인구와 관련된 사회적 위험성에대한 산출, 표현 그리고 해석에 대하여 중점적 으로 다루었으며, 또한 각기 다른 인구밀도와 배경을 가진 각국의 위험성 범주를 비교했다. 결론적으로 사회적 위험성 범주는 위험에 노출될 수 있는 대상 인구에 대하여 보다 광범위한 적용을 권장한다.

• 한국해양공학회지
• /
• 제34권2호
• /
• pp.55-65
• /
• 2020

A review of the 2nd generation of intact stability by the International Maritime Organization is performed. The main issues with the new stability criteria are reviewed. In particular, the physical background and related mathematical formulations of the pure loss of stability and parametric roll are summarized. Based on a literature review, benchmark calculation results for 17 different types of ships are discussed, and the final results are in excellent agreement with our physical expectations. Some relatively serious design problems are found in the application of the new stability criteria to sample ships built in Korea, and possible technical solutions are proposed, which have to be improved in the coming years.

• Nuclear Engineering and Technology
• /
• 제52권10호
• /
• pp.2402-2409
• /
• 2020

Analytical criteria for the onset of fuel fragmentation and Burst Fission Gas Release in fuel rods with ballooned claddings are formulated. On that basis, the GRSW-A model integrated with a fuel behaviour code is updated. After modification, the updated code is successfully applied to simulation of the Halden LOCA test IFA-650.12. Specifically, the calculation with Burst Fission Gas Release during the test resulted in prediction of cladding failure, whereas it could not be predicted at the test planning, before new models were implemented. A good agreement of the current model with experimental data for transient Fission Gas Release in the tests IFA-650.12 and IFA-650.14 is shown, as well.

• 한국소음진동공학회:학술대회논문집
• /
• 한국소음진동공학회 1996년도 추계학술대회논문집; 한국과학기술회관, 8 Nov. 1996
• /
• pp.377-385
• /
• 1996

In the case of a precision equipment, it requires a vibration free environment to provide its proper function. Especially, lithography and inspection devices, which have sub-nanometer class high accuracy and resolution, have come to necessity for producing more improved giga class semiconductor wafers. This high technology equipments require very strict environmental vibration standard in proportion to the accuracy of the manufacturing, inspecting devices. The vibration criteria are usually obtained either by the real vibration exciting test on the equipment or by the analytical calculation. the former is accurate but requires a great deal of time and efforts while the latter lacks reliability. this paper proposes a new method to solve this problem at a time. the permissible vibration level to a precision equipment can be easily obtained by analyzing a process of Frequency Response Function. This paper also demonstrates its effectiveness by applying the proposed method to finding the vibration criteria of a Computer Hard Disk Drive by impact Test.