• 한국식품영양학회지
• /
• 제26권4호
• /
• pp.713-724
• /
• 2013

This study examines the effects of smoking on the health and nutrient intake of male adults. The subjects recruited are divided into two groups according to non-smokers (n=64), and smokers (n=50). The results show that the non-smokers are significantly more interested in health and maintain more frequency of weekly exercise as compared to the smokers. Smokers reported that the main reason for failures in quitting attempts was a lack of willingness (62.0%). 44.0% of smoker would be interested in attending a smoking cessation program if they had the opportunities to do so. The non-smoker is considered healthy, and ate a regular diet, and low in fat-rich foods compared to the smokers. The non-smokers and smokers consume lower intakes of vitamin $B_2$, folic acid, and calcium (Ca). On the other hand, intakes of phosphorus, and sodium are the highest among all groups. In the case of smokers, increased intakes of antioxidant-rich fruits and vegetables should be encouraged, and the nutrition education for low-salt-type foods is also recommended.

• 한국해안해양공학회지
• /
• 제19권6호
• /
• pp.596-605
• /
• 2007

본 연구에서는 파랑이 존재하는 수역에서 수평방향으로 분사되는 비부력 원형 난류제트의 거동을 검토하기 위해 수리실험을 수행하였다. 난류제트의 유속은 PIV(particle image velocimetry)기법을 이용하여 측정하였으며, 측정된 순간유속장을 위상평균하여 평균유속장으로 계산하였다. 수리실험에서는 상대적으로 작은 파고의 규칙파가 사용되었으며, 파랑의 분산이 난류제트의 확산현상에 미치는 영향을 제트의 중심선유속과 횡단면유속의 변화를 통하여 관찰하였다. 또한 파랑의 위상변화에 따른 제트 거동을 파악하기 위하여 다른 세 위상순간에서 제트의 거동을 비교하였다. 제트의 중심선유속은 파고가 커짐에 따라 감소하였으며, 횡단면의 폭은 증가함을 알 수 있었다. 제트의 횡단면유속분포 특성인 자기상사성은 파고가 증가할수록 약해졌으나 축방향으로의 단면폭의 변화는 크지 않았다. 또한 파고에 대한 제트의 변화에 비해 파랑 위상에 대해서는 변화가 작음을 알 수 있었다.

• Journal of Periodontal and Implant Science
• /
• 제40권5호
• /
• pp.249-253
• /
• 2010

Purpose: The purpose of this study was to evaluate the improvement of periodontal health of generalized aggressive periodontitis (GAgP) diagnosed patients treated with non-surgical periodontal therapy accompanying systemic antibiotics administration. Methods: Two patients with GAgP were chosen for this study. Clinical indices were taken and a radiographic examination was performed at the baseline of the study and they were treated by periodontal therapy accompanying systemic antibiotics administration. Post-surgical visits were scheduled at regular intervals to check clinical and radiographic changes. Results: Through non-surgical periodontal therapy accompanying systemic antibiotics administration, GAgP patients showed decreased probing pocket depth, sulcus bleeding index, and increased attachment level and clinical index when comparing the initial and six month follow up data. In the six month follow-up radiographic examination after non-surgical periodontal therapy, resolution of the bony defect was observed. Conclusions: Non-surgical therapy combined with systemic antibiotics administration in GAgP patients is suggested to be an effective approach to enhance the periodontal health.

• 대한암한의학회지
• /
• 제27권1호
• /
• pp.57-66
• /
• 2022

Objective: To report the improvements with Korean medicine-based integrative cancer therapies on adverse effects of adjuvant chemotherapy in non-small cell lung cancer patients. Method: There were two patients complained cough, rhinorrhea, numbness, general weakness, nausea and dyspepsia after chemotherapy. They got treated centered on Korean medicine including herbal medicine, acupuncture, electro-acupuncture, pharmacopuncture, moxibustion, hand and foot bath. They were also treated Western immunotherapies like Thymosin at regular intervals. The symptoms were measured by the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 15 for Palliative Care(EORTC QLQ C-15 PAL) and their subjective assessments. Results: Their chief complaints were relieved and their quality of life scores was improved even though they have been receiving chemotherapy continuously. Conclusion: These cases revealed a possibility that Korean medicine-based integrative cancer therapies could improve some symptoms after chemotherapy in non-small cell lung cancer.

• 한국항해항만학회:학술대회논문집
• /
• 한국항해항만학회 2006년도 Asia Navigation Conference
• /
• pp.134-143
• /
• 2006

Out of all types of motions the critical motions leading to capsize is roll. The dynamic amplification in case of roll motion may be large for ships as roll natural frequency generally falls within the frequency range of wave energy spectrum typical used for estimation of motion spectrum. Roll motion is highly non-linear in nature. Den are various representations of non-linear damping and restoring available in literature. In this paper an uncoupled non-linear roll equations with three representation of damping and cubic restoring term is solved using a perturbation technique. Damping moment representations are linear plus quadratic velocity damping, angle dependant damping and linear plus cubic velocity dependant damping. Numerical value of linear damping coefficient is almost same for all types but non-linear damping is different. Linear and non-linear damping coefficients are obtained form free roll decay tests. External rolling moment is assumed as deterministic with sinusoidal form. Maximum roll amplitude of non-linear roll equation with various representations of damping is calculated using analytical procedure and compared with experimental results, which are obtained form forced tests in regular waves by varying frequency with three wave heights. Experiments indicate influence of non-linearity at resonance frequency. Both experiment and analytical results indicates increase in maximum roll amplitude with wave slope at resonance. Analytical results are compared with experiment results which indicate maximum roll amplitude analytically obtained with angle dependent and cubic velocity damping are equal and difference from experiments with these damping are less compared to non-linear equation with quadratic velocity damping.

• 대한수학회보
• /
• 제20권1호
• /
• pp.45-49
• /
• 1983

If R is ring and M is a right (or left) R-module, then M is called a faithful R-module if, for some a in R, x.a=0 for all x.mem.M then a=0. In [4], R.E. Johnson defines that M is a prime module if every non-zero submodule of M is faithful. Let us define that M is of prime type provided that M is faithful if and only if every non-zero submodule is faithful. We call a right (left) ideal I of R is of prime type if R/I is of prime type as a R-module. This is equivalent to the condition that if xRy.subeq.I then either x.mem.I ro y.mem.I (see [5:3:1]). It is easy to see that in case R is a commutative ring then a right or left ideal of a prime type is just a prime ideal. We have defined in [5], that a chain of right ideals of prime type in a ring R is a finite strictly increasing sequence I$_{0}$.contnd.I$_{1}$.contnd....contnd.I$_{n}$; the length of the chain is n. By the right dimension of a ring R, which is denoted by dim, R, we mean the supremum of the length of all chains of right ideals of prime type in R. It is an integer .geq.0 or .inf.. The left dimension of R, which is denoted by dim$_{l}$ R is similarly defined. It was shown in [5], that dim$_{r}$R=0 if and only if dim$_{l}$ R=0 if and only if R modulo the prime radical is a strongly regular ring. By "a strongly regular ring", we mean that for every a in R there is x in R such that axa=a=a$^{2}$x. It was also shown that R is a simple ring if and only if every right ideal is of prime type if and only if every left ideal is of prime type. In case, R is a (right or left) primitive ring then dim$_{r}$R=n if and only if dim$_{l}$ R=n if and only if R.iden.D$_{n+1}$ , n+1 by n+1 matrix ring on a division ring D. in this paper, we establish the following results: (1) If R is prime ring and dim$_{r}$R=n then either R is a righe Ore domain such that every non-zero right ideal of a prime type contains a non-zero minimal prime ideal or the classical ring of ritght quotients is isomorphic to m*m matrix ring over a division ring where m.leq.n+1. (b) If R is prime ring and dim$_{r}$R=n then dim$_{l}$ R=n if dim$_{l}$ R=n if dim$_{l}$ R<.inf. (c) Let R be a principal right and left ideal domain. If dim$_{r}$R=1 then R is an unique factorization domain.TEX>R=1 then R is an unique factorization domain.

• 대한기계학회논문집B
• /
• 제23권11호
• /
• pp.1473-1480
• /
• 1999

In the case of Impingement of plane moving shock wave over concave or convex double wedges (pseudo-stationary flow) and cylindrical walls (truly non-stationary flow), it Is expected that there are transitions from regular reflection to Mach reflection or vice versa In shock wave reflections. In these connections, it is necessary to verify the various of reflection process and transition angle for the reflection problems In double wedges, and to verify the transition angle, effects of curvature radius and initial wall angle on it for the reflection problems In cylindrical walls. Especially, we focused our attention to confirm the existence of hysteresis phenomenon induced by the different transition processes, and Neumann paradox, which is a small discrepancy between theoretical and experimental transition angles. Experiments were carried out by using the shock tube of $6{\times}6cm^2$, and high speed photographic technique consisted of delay unit, triggering system, light source of Xe lamp and so on was used for flow visualization.

• 전자공학회논문지 IE
• /
• 제47권4호
• /
• pp.34-38
• /
• 2010

본 논문에서 DCU는 기지국 전력증폭기의 성능을 안정적으로 유지하여 기지국 전체의 성능과 안정성 유지에 기여한다. 제안된 DCU는 전력증폭기에 공급되는 전력을 제어하며 실험에 사용한 앰프는 정격 입력이 10dBm일 때 정격 출력은 47.8dBm 이다. 성능의 비교는 DCU를 적용 했을 때와 미적용 했을 때를 비교하였고 연구결과 DCU가 IMD의 열화 경계에서 안정적으로 잘 동작 하였으며 전력증폭기가 매우 안정적으로 동작했다. DCU 없이 입력을 정격 보다 2dB 올렸을 때 IMD는 3~4dB 정도 나빠짐을 볼 수 있었다. 측정 결과를 보면 DSP를 이용한 제어가 유효하다는 것을 입증한다.

• 한국학교ㆍ지역보건교육학회지
• /
• 제20권2호
• /
• pp.53-67
• /
• 2019

Objectives: The purpose of this study is to obtain the basic data for the development of maternal health care by analyzing the status and needs of service target persons in Timor-Leste. Methods: The subjects were selected through the non-probability sampling method applying the FGI. Researchers interviewed 3 maternal health service managers, 6 midwives at Gleno and Railaco Health Centers and 2 women between 15 and 45 years of age. Results: In the results of on-site visit of the delivery facility and the FGI, we found poor sanitation in delivery room, lack of medical equipment related to antenatal consultation and delivery. In the case of the health center manager, the public health center provides various maternity health services, but the lack of the staff has difficulty in providing the service and managing the subjects. Midwives asked for regular maintenance education. Women in child bearing age living in mountainous areas had poor access to delivery facilities and lack of awareness of delivery services. Conclusions: It is necessary to increase the maternity management rate through regular maternity and maternal health check service and application to maternal management database, to improve the sanitation of the maternity clinic in the public health center, to strengthen the midwife competency program.

• 한국조리학회지
• /
• 제17권4호
• /
• pp.219-237
• /
• 2011

본 연구의 목적은 국내 외식업계의 비정규직 직원을 대상으로 핵심자기평가, 일-가족 지원, 직장만족 그리고 이직의도의 관계를 분석함으로써 직원의 이직을 줄이기 위한 방안을 모색하고 추후 이와 관련된 연구의 방향을 제시하는 것이다. 본 연구의 가설을 검증하기 위하여 AMOS 4.0과 SPSS 10.0 통계 프로그램을 이용하였으며, 분석 방법은 신뢰도분석(reliability analysis), 빈도분석(frequency analysis), 확인적 요인분석(confirmatory factor analysis), 상관관계 분석(correlation analysis) 그리고 공분산 구조분석(covariance structure analysis)을 실시하였다. 연구 결과, 핵심자기평가는 일-가족 방향 지원과 가족-일 방향 지원 모두에 긍정적인 영향이 있는 것으로 밝혀졌다. 일-가족 지원과 직장만족의 관계에 있어서는 가족-일 방향 지원만이 직장만족에 긍정적인 영향이 있는 것으로 나타났다. 마지막으로 직장만족은 직원의 이직을 줄이는 것에 효과가 있는 것으로 규명되었다.