공기연료비 변화에 있어서 기관출럭에 미치는 각 인자의 영향에 관한 해석

강우정,김문헌,이성열 한국자동차공학회 1983 한국자동차공학회 학술강연초록집 Vol.- No.-

PPCP 장치에서 NOx 및 SOx의 동시저감에 따른 탄화수소 가스 종류의 첨가효과

姜宇政 충주대 산업과학기술연구소 2000 産業科學論文集 Vol.8 No.-

Green Round connected with trade and environment has been under discussion since WTO was established. It has an effect on the industry of environment that our country become a member of OECD. We must meet with the intensive sanction of air pollution and develope the preventive technology of air pollution. In the case when noxious materials are NOx and SOx that have the same concentration in the sample gas, the reduction rate of NOx and SOx is increased because the ionization works well in the rector and radical reaction among NOx, SOx and C2H4. When the initial concentration of NOx and SOx is lower, the additional amount of C2H4 is higher, the flow rate is lower, the oxgen concentration is higher, and the input voltage and the frequency are higher, the reduction rate of NOx and SOx are increased similarly.

스파아크 점화기관의 출력성능에 미치는 각 인자의 영향

姜宇政 忠州大學校 1987 한국교통대학교 논문집 Vol.21 No.-

The horsepower of internal combustion engines is influenced by three factors; Operating factor, environmental fector and design factor. This study is concerned with the horspower on the veriation of air-fuel ratio as an operating factor. The important experimental results are as follows. 1) The behavior of each factor which influences horsepower in variation of air-fuel ratio was proved. 2) The horsepower is largely influenced by the combustion efficiency in the various factors.

하수 슬러지 건조 공정의 경제성 평가에 관한 연구

姜宇政,申澈洙,梁晶模 충주대 2004 産業科學論文集 Vol.12 No.-

To solve the water pollution prevention problems, sewage and wastewater disposal system as the basic facilities are required strongly. However, the production of sewage sludge, a by-product of sewage and wastewater disposal system, is tending to increase. Therefore, efficient disposal method of sewage and wastewater is needed. At present, there are many problems in current disposal methods such as open dumping, ocean disposal, and incineration. These cause secondary environmental problems. Recycling sewage sludge is an alternative method to solve these problems thoroughly and prevent environmental disruption and maximize economic usefulness. This study presents LCA(Life Cycle Assesment) application to analyze the environmental loads and economy of sewage sludge drying process. The obtained results are applied to prepare fundamental understanding and judgement in view of environmental and economical consideration on drying process of sewage sludge by local authorities. The results are as follows; The economic assessment showed that the expense of drying process of sewage sludge was 45,603 won per ton. Among the expense items, the fuel cost is around 35%(15,961 won per ton) and it is the main cause. It is regarded that reducing the fuel can obtain the reduction of the cost and carbon dioxide, major environmental pollution discharge.

PPCP 장치에서 NOS_x 및 SO_x 의 동시저감에 따른 C₂H₄가스의 첨가효과

姜宇政 충주대 2001 한국교통대학교 논문집 Vol.36 No.1

In the case when noxious materials are NOx and SOx that have the same concentration in the sample gas, the reduction rate of NOx and SOx is increased becouse the ionization works well in the ractor and rabical reaction among NOx, SOx and C2H4.When the initial concentration of NOx and SOx is lower, the additional amount of C2H4 is higher, the flow rate is lower, the oxgen concentration is higher, and the input voltage and the frequency are higher, the reduction rate of NOx and SOx are increased similarly.

NO 및 SO 의 동시제거를 위한 코로나 방전실험

姜宇政 忠州大學校 1995 한국교통대학교 논문집 Vol.30 No.1

The corona-induced simultaneous removal of NOx and SOx and SO₂from the flue gas is based on the application of narrow voltage pulses to in electrode structure simiar to that of an electrostatic precipitator. The free electros of the corona discharge, having eneygy up to 20 eV, originate active radicals which lead to the transformation of NOx and SOx into their which can be neutralized to salt particulate by adding to the gas a basic compound such as ammonia and calcium hydroxide. the process has been investigated with a test rig installed in the slipstream of the flue gas duct of a coal thermal power plant. The experiments were performed with three reactor modules of different geometries having a hominal gas flow rate of 1000 nM³/h. The voltage pulses, generated with a fast switching experimental device, had a rise front of less than 400 as and a repetition frequency up to 300 Hz. The test results have confimed the physical feasibility of the process. Under initial concentration of NOx and SO₂ between 400 and 530 ppmV, the removal efficiency was 50-60% for NOx and about 80% for SO₂at an energy input to the gas of 12-14 Wh/Nm³when ammonia was injected in the fiue gas, Using hydtated lime instead resulted in a less suitable basic compound. Further experiments are necessary to assess the effect of different electrode geometries of the reactor, the efficiency of the process attainable with an improved coupling of narrow pulse power set to the reactor, and the practical ways for integrating the DeNOx and DeSO₂corona process with the soild particle collection system.

회전건조로를 이용한 하수슬러지 건조 인자에 관한 실험적연구

姜宇政,李基福 충주대 2003 産業科學論文集 Vol.11 No.-

The general methods of sewage sludge disposal Simple reclaiming, Dumping in the sea, Incineration are causing so many problems, and sewage sludge dry for safety disposal can cut down on the delivery expense from reducibility effect of the volume and weight, also can prevent the several second environmental pollution. It is a necessary process of the multiple disposal method to raise a economization and efficiency of sewage sludge final disposal. Such a point of this view, dry is a simple method, but chemical properties, heat properties, physical properties by physical law of sewage sludge have brought a difficulty of dryer operation. Therefore in this study of several factors occurred during operating a dryer has been systematically formed, and as a result of the test to draw out the optimal drying process condition with the factor the amount use of fuel, pressure, over air amount, damper opening and shutting rate, rotary kiln revolutions, transfer device revolution in the rotary dryer, by using Taguchi method. It is achieved a hight efficiency of dryer that is decided the most suitable operating condition of swage sludge dryer

기본심리욕구가 SNS 중독경향성에 영향을 미침에 있어서 상태 소외에 대한 두려움의 매개효과: 재한 중국 유학생을 대상으로

강우정,박정윤 국제인문사회연구학회 2024 Studies on Humanities and Social Sciences (SHSC) Vol.6 No.2

기본심리욕구가 SNS 중독경향성에 영향을 미침에 있어서 상태 소외에 대한 두려움의 매개효과: 재한 중국 유학생을 대상으로 강 우 정ㆍ박 정 윤 연구 목적: 중국 유학생의 기본심리욕구와 SNS 중독경향성의 관계에서 상태 소외에 대한 두려움의 매개효과를 검증하고자 하였다. 연구 방법: 한국에 재학 중인 중국 유학생 308명을 대상으로 온라인 설문조사를 실시하였으며, IBM SPSS Statistics 28과 Process Macro V4.3을 사용해 통계분석을 실시하였다. 연구 내용: 연구 결과, 하루 평균 SNS 이용 시간, 문화적응 스트레스, 기본심리욕구 중 자율성, 상태 소외에 대한 두려움이 유학생들의 SNS 중독경향성에 영향을 미치는 것으로 나타났다. 기본심리욕구 중 자율성과 유능성이 SNS 중독경향성과의 관계에서 상태 소외에 대한 두려움의 부분 매개효과를 나타냈다. 결론 및 제언: 본 연구 결과를 토대로 중국 유학생의 SNS 중독경향성을 낮추기 위해서는 기본심리욕구를 향상시키고 상태 소외에 대한 두려움이라는 인지 편향을 수정하도록 돕는 상담적 개입을 제안하였다. 핵심어: 중국 유학생, 기본심리욕구, 상태 소외에 대한 두려움, SNS 중독경향성, 매개효과 Mediating Effect of State-fear of Missing Outin the Influence of Basic Psychological Needson Social Network Services Addiction Proneness:Focusing on Chinese International Students in Korea Yujing Jiang** & Jeongyun Park*** Abstract: The purpose of this study is to examine the mediating effect of state-fear of missing out (state-FoMO) on the relationship between basic psychological needs of Chinese international students and social network service (SNS) addiction proneness. The date were collected through a online survey of 308 Chinese international students studying in Korea and analyzed using the IBM SPSS Statistics 28 and Process Macro V4.3. As a result, the average time spend on SNS per day, cultural adaptation stress, autonomy as a sub variable of basic psychological needs, state-FoMO have a significant impact on SNS addiction proneness of Chinese international students. The study confirmed the mediation of state-FoMO in the effect of basic psychological needs on SNS addiction proneness. Based on the research results, this study suggests directions for counseling intervention to improve basic psychological needs and correction cognitive biases of state-FoMO in order to reduce the SNS addiction proneness of Chinese international students. Key Words: Chinese International Students, Basic Psychological Needs, State-FoMO, SNS Addiction Proneness, Mediating Effect □ 접수일: 2024년 4월 5일, 수정일: 2024년 4월 18일, 게재확정일: 2024년 4월 20일* 이 논문은 주저자의 중앙대학교 석사학위논문을 수정・보완한 것임. ** 주저자, 중앙대학교 일반대학원 심리학과 석사(First Author, Master, ChungAng Univ., Email: namecorrine@163.com)*** 교신저자, 중앙대학교 심리학과 교수(Corresponding Author, Professor, ChungAng Univ., Email: pjy4838@cau.ac.kr)

內燃機關에서의 熱損失에 關한 硏究

姜宇政 충주대학교 1994 한국교통대학교 논문집 Vol.29 No.1

The major objective of this study is to assume the heat loss during the combustion period. For this purpose two methods are suggested. The first is to transform p-v diagram which can be got from the indicator diagram through an experiment into the equivalent constant volume cycle, moreover being in search of the adiabatic constant volume cycle under the same initial conditions of combustion, then to utilize the differences of the peak temperatures for these two cycles. The second is to make use of the heat release through the analysis of indicator diagrams. In case of changing atmospheric conditions, the heat loss during the combustion period obtained by two methods is nearly corresponding. Therefore, it is concluded that these methods for heat loss during the combustion period are reasonable.

조종사를 대상으로한 Human Error 예방제도에 대한 연구

강우정 韓國交通大學校 2013 한국교통대학교 논문집 Vol.48 No.-

Human error has been cited as a primary cause or contributing factor in disasters and accidents in industries as diverse as nuclear power, aviation, space exploration, and medicine. The origins of Human Factors as a profession with its own domain of expertise are not all self-evident. In fact, humans have been increasing causal factor in both military and civilian aviation accidents as mechanical equipment have become more reliable. Today, a very large percentage of all aviation are attributable, directly or indirectly, to some form of human error. It is therefore intended that the ICAO Human Factors Digests will become a source of both infotmation and practical measures to be used in the effort to improve education, training and remedial measures in Human Factors. As a result of many study, a range of prevention of human error have been developed. but each of kind is lack of a precision, effectiveness and seem to be considered for aspect of deficiency as an systematic accessibility. So, we're going to sort the most effective and systematic prevenetion of human error and concentrate on consolidating method for human error and aviation safety.