메모리 효율적인 방법을 이용한 3D 슈팅 게임 개발

박석희, 안성옥, 김수균 배재대학교 공학연구소 2014 공학논문집 Vol.16 No.1

현재 다양한 게임 개발 툴과 게임 엔진의 발전으로 초보자도 손쉽게 게임을 제작할 수 있게 되었다. DirectX SDK로 개발할 때의 장점은 게임 엔진에서는 접근하기 힘든 세세한 부분까지 구현이 가능하며, 비주얼 이펙트를 극대화하고 그래픽을 최적화하여 메모리 효율적인 측면이 있다. 또한 게임 개발 및 유지보수 면에서 최소의 비용으로 높은 효율을 기대할 수 있기 때문에 DirectX를 이용한 게임 개발이 꾸준하게 이루어지고 있다. 본 논문에서는 게임 개발 툴이나 엔진을 사용하지 않고 DirectX 라이브러리를 이용하여 3D 슈팅게임을 제작한다. 또한 누구나 손쉽게 접근할 수 있으며 간편한 조작으로 게임의 컨텐츠를 접할 수 있는 게임을 개발하는 것을 목표로 한다.

시선제어 시스템에서의 비선형 토크보상 적용

盧澈均,尹錫榮,金廣泰 慶一大學校 1997 論文集 Vol.14 No.2

Line of sight(LOS) control systems are precision electro-optical-mechanical gimbal assemblies designed to control the angular position of the LOS of a sensor precisely, therefore they are isolated from the base vehicle dynamics and LOS is pointed toward the target in a desired direction. Nonlinear torque disturbances in their systems cause LOS jitter which limit system performance. Major sources of nonlinear disturbance are friction torque by rotation and gimbal imbalance torque by nonlinear environment. This paper describes the compensation technique for reducing LOS jitter due to nonlinear friction coupling of the host vibration. Proposed compensator controls the feedforward torque command of plant adaptively to converge the error between reference model without friction and plant output to zero. Simulation results show that proposed compensator is effective in cancelling the nonlinear torque and improving the stabilization performance.

초음파법을 이용한 콘크리트 역타시공 이음부 공극의 화상검출특성

박석균,백운찬,이한범,김명모 한국비파괴검사학회 2000 한국비파괴검사학회지 Vol.20 No.4

최근 역타시공법 등에 의한 콘크리트 구조물의 시공이 증가 추세에 있다. 이 경우, 자주 발생되는 신ㆍ구타설 콘크리트 시공이음부의 공극은 향후 구조물의 구조적인 특성과 내구성 등에 큰 영향을 미치게 된다. 그러나 현재 제안되고 있는 비파괴 검사법으로는 효과적으로 이음부 공극을 평가하기에 많은 한계가 있다. 본 연구에서는 시공이음부의 콘크리트 충전상태를 평가하기 위해 철골철근 콘크리트와 무근 콘크리트 시험체내에 공극을 모의제작한 후, 초음파속도 측정을 실시하고, 화상처리기법을 이용하여 비교적 용이하게 해석 가능한 방법에 대해 검토하였다.

환경친화적 소비자의 구매행동에 관한 연구 : 환경제품의 관여도를 중심으로 Focus on the Involvement of the Green Product

송균석 建國大學校 經濟經營硏究所 1996 商經硏究 Vol.21 No.1

Environmentally-friendly consumers can exhibit environmental responsibility by acquiring and using green products, neglecting to acquire and use non-green products. This paper argues that environmentally-friendly consumer research can be enhanced by the application of the green product involvement and the symbolic interactionist perspective. The purpose of this paper is to examine the literature regarding green marketing and environmentally-friendly consumers, introduce the green product involvement construct and the symbolic interactionism perspective, and enhance the behavior research of environmentally- friendly consumers. This paper has attempted to show the potential for combining environmentally-friendly consumers with the green product involvement construct and the symbolic interactionism perspective. Consumers attempt to preserve or enhance their self-image by buying products they believe are congruent with that self-image and avoiding products that are not. Self-image is a powerful concept which has many implications and applications in the field of consumer behavior. The results of this research have discovered that the concern for the environment results in the green product involvement, which in turn relates to information search, buy intention, brand loyalty, opinion leadership, innovativeness. Future research is needed to test the proposed relationships and further establish and refine reliable/valid measures of constructs.

화재로 손상된 콘크리트 구조물의 내구적 성질 및 역학적 특성에 관한 조사연구

박석균 大田大學校 産業技術硏究所 1998 산업기술연구소 論文集 Vol.9 No.1

The evaluation of fire-damaged concrete is a very important issue to maintain or repair concrete structures effectively. But, investigation techniques for the evaluation of fire-damaged concrete are not sufficiently understood at this time. In this study, the evaluation of fire-damaged concrete has been made using field-applicable test methods which are based on visual inspections, ultrasonic test methods, and load test methods. For a more comprehensive assessment of fire-damaged concrete, chemical test methods and semi-destructive test methods are also available. This paper deals with the case study of a fire involving a 500㎡ reinforced concrete slab area that was less than about three months old at the time of the fire. From the test results, this study verified that these methods (mentioned of visual inspections, ultrasonic test methods, load test methods, chemical test methods, and semi-destructive test method) were reliable to evaluate the degree of damage to the reinforcing steel and the concrete. Finally, investigation results show that the reinforced concrete was able to withstand the fire with only minor damage.

자아이미지, 제품상징성, 제품관여의 관련성에 관한 연구

송균석 建國大學校 經濟經營硏究所 1993 商經硏究 Vol.18 No.1

This paper has reviewed relationships among self-image(self-concept), product symbolism, product involvement. Each Individual has a perceived image of himself or herself as a certain kind of person, with certain traits, habits, possessions, relationships, and ways of behaving. As with other types of perceptions, the individual's self-image is unique, a product of that person's background and experience. Individuals develop a perceived self-image through interactions with other people. Products and brands have symbolic value for individuals, who evaluate them on the basis of their consistency(congruence) with their personal pictures of themselves. Some products seem to agree with an individual's self-image ; others seem totally alien. Consumers attempt to preserve or enhance their self-image by buying products they believe are congruent with that self-image and avoiding products that are not. Consumers also tend to shop in stores that have an image consistent with their own self-image. Consumers prefer the objects(product, brand, store) that project their self-concept. If the consistency between self-concept and product image(symbolism) exist, consumers are loyal to the product. The relationship between self-image and product symbolism affects the levels, responses of involvement. Therefore, for effective marketing strategy using involvement, a study on self-image and product symbolism should be preceeded. Three different self-image constructs have been identified : The ideal self-concept, actual self-concept, and expected self-concept. The concept of self-image has strategic implications for marketers. Marketers can segment their markets on the basis of relevant consumer self-images and position their products or stores as symbols of such self-images, Such a strategy is in complete agreement with the classical marketing concept. Self-image is a powerful concept which has many implications and applications in the field of consumer behavior. The concept has been used in market segmentation, advertising, packaging, personal selling, product development, and retailing. The marketing manager must identify self-images that are broadly held by groups of consumers and build a product image that is consistent with these images. Future research is needed to test the proposed relationships and further establish and refine reliable/valid measures of constructs.

일본에서의 지구환경문제와 환경친화적 콘크리트의 역할과 대책

박석균 大田大學校 環境問題硏究所 1999 환경문제연구소 논문집 Vol.4 No.-

Eco-concrete which is named from evironmentally friendly concrete is specially issued in Japan. It is because eco-concrete can be expected to reduce environmental load as gloval environmental problems. Environmental load can be reduced by characteristics of eco-concrete, that is, water permeability, sound absorption, and chemical charateristics. Eco-concrete is also effective for sabing energy, natural resource, water purification, and planting base structure as organisms asoptable concrete. Therefore, it can be anticipated that eco-concrete become to be also important issue in Korea. For furnishing the persons concerned with useful information, this note introduced a review of global environmental problems and evironmentally friendly concrete which is specially issued in Japan.

현장 구조물 콘크리트의 열화원인분석을 위한 화학적 내구성 진단방법에 관한 연구

박석균 대전대학교 산업기술연구소 1999 산업기술연구소 論文集 Vol.10 No.1

The durability evaluation of deteriorated concrete is a very important issue to maintain or repair concrete structures effectively. But, diagnosis techniques for the durability evaluation of deteriorated concrete are not sufficiently applied at this time in Korea. These techniques can be also used to the identification of the causes of deterioration, such as sulphate or chloride, or to specification compliance, involving cement content and water/cement ratio determination. In this study, the durability evaluation and cause identification of deteriorated concrete has been made using chemical testing methods which are based on chemical composition analysis using x-ray fluorescence spectroscopy, hydrated material analysis using x-ray diffractometer, porosity test using mercury-porosimeter, chloride content test using potentio-graph and hydrated material observation using scanning electron microscope. As a result, it is clarified that these are all highly specialized techniques which can be used for analysis of the constituents of concrete involving durability evaluation and identification of the causes of deterioration.

초음파법을 이용한 콘크리트 시공이음부 공극 및 내부공동의 화상검출 해석에 관한 연구

박석균,백운찬,이한범 대전대학교 산업기술연구소 2000 산업기술연구소 論文集 Vol.11 No.2

The joint and void treatment of concrete is one of the technical problems in construction. Joints and voids created with the construction result in serious weakness from the aspects of both structural and water-barrier function. Ultrasonic image processing technique was used for the inspection of construction joints of SRC(Steel-frame Reinforced Concrete) column and voids of concrete block in this study. The advantages and limitations of this technique for non-destructive inspection in construction joints and voids are investigated. As a result, it has been verified that the semi-direct measurement type is more effective than the other types for detecting the construction joints and voids using ultrasonic method.

이차구순열 결손의 치료

임석균,박인순,여환호,지재휴,김영균,김수관 大韓顎顔面成形再建外科學會 1997 Maxillofacial Plastic Reconstructive Surgery Vol.19 No.2

Despite the current accomplishments with the repair of cleft lips, the surgical management of the nasal deformity remains a functional and aesthetic dilemma for patients, their families, and reconstructive surgeons. Recent improvements in the understanding and technical execution of te primary cleft lip repair have significantly reduced secondary sequelae and the consequent need for secondary surgical correction. But, secondary surgical corrections are necessary according to numerous factors. Such factors include the secondary surgical corrections are necessary according to numerous factors. Such factors include the severity of the initial deformity, the surgical plan, precision of execution of the primary repair, and success of the postoperative management. We preformed the secondary correction of cleft lip and palate in 11 patients via various methods. In conclusion, primary repair of cleft lip and palate patients is the most important to prevent the secondary deformities, and most of cleft lip and palate with secondary deformities must be treated with combined cheiloplasty and rhinoplasty.