정적 연소실에서 성층화된 혼합기 조건하의 점화 전극사이 당량비 측정과 연소 특성에 미치는 영향

배상수,이기철,민경덕,Bae, Sang-Su,Lee, Gi-Cheol,Min, Gyeong-Deok 대한기계학회 2001 大韓機械學會論文集B Vol.25 No.10

To investigate only the effects of the stratified mixture distribution on initial flame propagation and combustion characteristics, the instantaneous equivalence ratio in the spark plug gap and combustion pressure were measured simultaneously In a constant volume chamber, To induce the stratified propane-air mixture distribution near the spark plug, counter-flow typed mixture injection system was used under the constant mean equivalence ratio $\Phi$$\_$mean/= 1.0 The instantaneous equivalence ratio was measured by a single-shot Raman scattering with narrow-band KrF excimer laser. The measuring error was within the limit of $\pm$ 3.5% provided that the proposed method was applied to the measured Raman signals. Judging from mass fraction burned derived from the measured pressure, the optimum combustion characteristics were shown under the condition that the local equivalence ratio in the spark plug was near 1.28$\pm$0.04, and these characteristics were more remarkable at the initial stage of combustion.

발파작업 시 충전매질에 따른 발파효과 비교 연구

배상수,한우진,장승엽,방명석,Bae, Sang-Soo,Han, Woo-Jin,Jang, Seung-Yup,Bang, Myung-Seok 한국지반신소재학회 2022 한국지반신소재학회 논문집 Vol.21 No.2

This study simulated the shock wave propagation through the tamping material between explosives and hole wall at blasting works and verified the effect of tamping materials. The Arbitrary Lagrangian-Eulerian(ALE) method was selected to model the mixture of solid (Lagrangian) and fluid (Eulerian). The time series analysis was carried out during blasting process time. Explosives and tamping materials (air or water) were modeled with finite element mesh and the hole wall was assumed as a rigid body that can determine the propagation velocity and shock force hitting the hole wall from starting point (explosives). The numerical simulation results show that the propagation velocity and shock force in case of water were larger than those in case of air. In addition, the real site at blasting work was modeled and simulated. The rock was treated as elasto-plastic material. The results demonstrate that the instantaneous shock force was larger and the demolished block size was smaller in water than in air. On the contrary, the impact in the back side of explosives hole was smaller in water, because considerable amount of shock energy was used to demolish the rock, but the propagation of compression through solid becomes smaller due to the damping effect by rock demolition. Therefore, It can be proven that the water as the tamping media was more profitable than air.

해외보고서-돼지고기 체인 품질 조사 보고

배상수,Bae, Sang-Su 대한양돈협회 1995 養豚 Vol.17 No.2

지역보건정보체계의 구성과 활용

배상수,Bae, S.S. 대한예방의학회 1995 예방의학회지 Vol.28 No.2

새로이 발견된 고혈압 환자들의 약물치료 및 생활양식 개선의도와 순응도와의 관계

배상수,이석구,Bae, Sang-Soo,Lee, Sok-Goo 대한예방의학회 2001 예방의학회지 Vol.34 No.4

Objectives : To analyse the psychosocial factors associated with hypertension management(drug treatment and life style modification) of newly detected cases and to understand and assess their behavioral intention or behaviors. Methods : The survey area was a combined urban and rural area in Chungnam province, Korea, and the sampling method was cluster sampling. Study subjects included 541 newly detected cases of hypertension rated above stage 2 by JNC-VI from a community survey. The first survey was applied to 383 of these patients in order to discern their psychosocial characteristics. A follow-up survey was given to 345 persons with an 11-month interval following monthly telephone counseling concerning medication and life style modification by trained nurses. The final study subjects for analysis comprised 271 persons after excluding cases of incomplete data and change of address. Results : Among the 85(33.2%) new patients who had intended to undergo drug treatment, 30(35.3%) persons were treated with antihypertensive agent after 11 - month interval, while among the patients with no intention to receive treatment, only 36(21.1%) persons were treated. Hypertensive patients with a high intention score revealed a high score in life style modification compliance as well. Seventy three percent of the variance of behavioral intention to undergo hypertension management was explained by the patients attitude toward performing the behavior and subjective norm associated with behaviors related to the theory of reasoned action in structural modeling. Actual behaviors related positively with behavioral intention. The coefficient of determination was 0.255. Conclusion : Improving the compliance level of hypertensive patients in respect to drug treatment or life style modification requires a build up of positive behavioral intention, and caregivers must pay more attention to eventually converting behavioral intention to actual behaviors.

국민 건강의 결정 요인 3 : 질병예방 및 의료이용행태

배상수,Bae, Sang-Soo 대한예방의학회 1993 예방의학회지 Vol.26 No.4

지금까지 우리나라의 국민들의 예방행태와 질병행태, 그리고 환자역할에 대하여 기존에 발표된 자료를 중심으로 재해석을 기하여 보았다. 물론 이 발표에서 사용된 자료들이 정확하며 타당한 자료인가에 대해서는 반드시 그렇다라고 답변할 수는 없다. 다만 우리나라에서의 건강관련행태를 설명하기 위해서는 자료의 한계라는 현실을 감안하지 않을 수 없다는 사실을 이해해주기 바란다. 우리나라국민들의 건강행태는 과거에 비해 상당히 변화하고 있으나 계층간의 행태의 차이, 변화의 원인 등에 대해서는 아직 연구가 미흡하다. 지금까지 이루어진 행태연구들이 정합적인 모형을 사용하고 있다고 보기 어려운 것이 그 원인의 하나 일 것이다. 새로이 개발된 모형들을 적용하기 위한 노력이 필요하며, 사용되는 변수의 타당성에 대한 연구도 필요하다. 행태와 관련된 연구에서 사용되는 변수들이 사회문화의 산물이라는 사실을 생각하면 우리나름대로의 변수정의가 있어야 한다는 것은 지극히 당연하다 하겠다. 끝으로 행태를 연구함에 있어 인간의 의식은 사회구조의 산물이라는 사실을 명심할 필요가 있다. 루카치는 자본주의 사회에서는 노동자의 계급의식 역시 자본주의 구조의 산물일 수 있다 하였다. 이런 의미에서 지식, 태도, 행태 등에 대한 연구는 사회구조의 총체성에 대한 인식을 요구한다. 만일 그렇지 않은 경우에는 행태연구를 통한 결과가 희생자비난의 논리로 악순환할 가능성이 높기 때문이다. A wide range of health professionals have interest in changing the health behavior of individuals. To intervene effectively and to make informed judgements about how to measure the success of such interventions, health professionals must have an deep understanding of health behavior. This paper provides an overview of the thories of health-related behaviors and the strength and weakness of each, how the theories relate to others, and how they can be used in practice. The theories reviewed include Suchmann's stages of illness experience, Health belief model, Attribution theory, Fishbein's theory of reasoned action, Multiattribute utility models, Consumer information processing, and Anderson's models. Finally, this paper introduces the reader to interesting research findings in our country.

신 공중보건과 국가공중보건체계

배상수,Bae, Sang Soo 한국농촌의학지역보건학회 2012 농촌의학·지역보건 Vol.39 No.4

The New Public Health(NPH) is a comprehensive approach to protecting and promoting the health status of each individual member and society as a whole. NHP is not so much a philosophy to broaden the understanding of public health as it is an action plan to address current public health system. This paper's objectives include increasing public and professional awareness of the significant changes in the national public health systems of developed countries and contributing to more effective delivery of public health services in Korea. This paper reviews articles and documents concerning NPH and the public health system, and outlines of the achievements in developed countries since NPH movement began. These include the change in the definition and function of public health, expansion of public health networks, strengthening of public health policy, reorientation of public health delivery systems, promotion of workforce capacity, and the implementation of evidence-based management. To overcome the challenges facing the public health system of Korea, we must prioritize the value of population-based approach, expand the notion of a public health system to encompass all sectors that can influence health, promote a "Health in All Policies" approach, focus on an evidence-based health policy and program, develop core competencies for public health workers, and establish performance standards for public health organizations based on the core functions of public health.

상세화학반응기구를 이용한 탄화 수소 및 메탄을 층류 화염 속도 모델링

배상수,민경덕,Bae, Sang-Su,Min, Gyeong-Deok 대한기계학회 2001 大韓機械學會論文集B Vol.25 No.10

In order to be applicable to the combustion modelling of stratified charged combustion like that of - lean burn and GDI engine, the correlations of laminar burring velocities fur several hydrocarbon fuels and methanol are needed over a wide range of equivalence ratio, pressure and temperature. In this study, these correlations are modeled in the 1311owing form based on the experimental and Muller\`s modeling results for several fuels, where $\alpha$, ξ, and ξ are functions of pressure and temperature, $S_{L}$ =$\alpha$ exp[-ξ($\Phi$-$\Phi$$_{m}$)$^{2}$ -exp {-ζ($\Phi$-$\Phi$$_{m}$)}-ζ($\Phi$-$\Phi$$_{m}$)]. By using the results calculated by PREMIX code with Sloane\`s detailed chemical reaction mechanism for propane, it is verified that the coefficients of the abode modeling can be determined by considering laminar burning velocity data only in a range of equivalence ratio less than $\Phi$$_{m}$. Therefore, Muller\`s modeling results can be adopted leer modeling of the pressure and temperature dependency. Compared with the results of the existing Keck'and Gulder's models, those of the present one showed the good agreement of the recent experimental data, especially in the range of lean and rich sides.s.des.s.

산간지역의 전작지 농업용수 공급에 관한 연구

배상수,전무갑,지홍기,이순탁,Bae, Sang-Su,Jeon, Mu-Gap,Ji, Hong-Gi,Lee, Sun-Tak 한국수자원학회 2000 한국수자원학회논문집 Vol.33 No.1

사회생태학적 모형에 기반한 한국인 위암검진 수검의 관련 요인

배상수,조희숙,김동현,최용준,이훈재,이태진,이혜진,Bae, Sang-Soo,Jo, Heui-Sug,Kim, Dong-Hyun,Choi, Yong-Jun,Lee, Hun-Jae,Lee, Tae-Jin,Lee, Hye-Jean 대한예방의학회 2008 예방의학회지 Vol.41 No.2

Objectives : We measured behavioral factors associated with Koreans receiving gastric cancer screening based on a socio-ecological model, in part to develop strategies to improve cancer screening rates. Methods : A telephone survey was conducted with 2,576 people chosen through stratified random sampling from April 1 - May 31, 2004. Collected information included gastric cancer screening, socio-demographic factors, and socio-ecological factors at intrapersonal, interpersonal, community, and public policy levels. Results : Among 985 survey respondents(380 men and 605 women), 402 had received gastric cancer screening. Logistic analysis was performed to compare those screened and unscreened. 'Age' was the only demographic factor that showed a statistically significant association with getting screening. People in their fifties (OR=1.731, 95% CI=1.190-2.520) and sixties (OR=2.098, 95% CI=1.301-3.385) showed a higher likelihood of getting screened, compared to those in the forties. 'Accessibility to a medical institution' was a significant factor related to having gastric cancer screening at the intrapersonal level. At the interpersonal level, recommendations by family members to be screened and a family practice of routine cancer screening were significantly related. People with frequent education about cancer screening or with stronger social feelings that cancer screening is necessary also demonstrated significantly higher tendencies to be screened. Conclusions : In conclusion, a socio-ecological model seems appropriate for explaining gastric cancer screening behavior and associated factors. Health planners should develop integrated strategies to improve cancer screening rates based on socio-ecological factors, especially at the interpersonal and community levels.