• Title/Summary/Keyword: cam

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Optimal Design of a Variable-Speed Cam for Power Circuit Breaker (고압 회로차단기의 비등속 회전 캠의 최적설계)

  • Kim, Jun-Hyeong;An, Gil-Yeong;Kim, Su-Hyeon;Gwak, Yun-Geun
    • Journal of the Korean Society for Precision Engineering
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    • v.18 no.12
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    • pp.47-53
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    • 2001
  • Power Circuit Breaker uses a variable-speed cam mechanism actuated by pre-loaded spring force. This paper presents the optimal design procedure for a variable-speed cam mechanism based on the dynamic model of a complete spring-actuated cam system. The optimal cam is compared with an original cam. Simulation results show that the dynamic behaviors of the designed cam are superior to those of the original cam.

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The use of complementary and alternative medicine in children with common neurologic diseases

  • Yeon, Gyu-Min;Nam, Sang Ook
    • Clinical and Experimental Pediatrics
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    • v.59 no.8
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    • pp.313-318
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    • 2016
  • Complementary and alternative medicine (CAM) is a phrase used to describe additional health care methods such as mind/body practices and natural products not regarded as treatments by conventional medicine. The use of CAM in children with common neurologic diseases is more frequent than its use in healthy children (24%-78% vs. 12%). However, less than half of patients report such use to their physicians. The preferred modalities of CAM vary in different countries due to their different cultures and traditions. The most common factor significantly associated with the use of CAM is parental CAM use in most studies. The frequency of the use of CAM in children and adults with neurologic diseases is similar, and both rates are higher than the rates in those without these conditions. The preferred modalities of CAM in adults are diverse, and megavitamins and mind/body therapy (prayer and chiropractic care) are included. The most common factor significantly associated with the use of CAM in adults with neurologic diseases is high educational level. Physicians need to be concerned with patients' use of CAM and provide correct information about CAM so that patients may make the right decisions. Further study is needed to determine the evidence-based efficacy of CAM use in children with common neurologic diseases.

A Study on Nursing Students' Attitudes toward Complementary and Alternative Medicine (CAM) (간호학생이 지각하는 보완대체요법에 대한 태도 조사연구)

  • Kim Yeong-Hee
    • Journal of Korean Public Health Nursing
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    • v.18 no.2
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    • pp.276-285
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    • 2004
  • The purpose of this study was to help in explaining the necessity of education on complementary and alternative medicine(CAM) and opening relevant curriculums in nursing education by grasping the kinds of CAM in which nursing students want to be opened. Data were collected from September 27, 2003 through October 20, 2003. A group of 865 nursing students were surveyed using questionnaires in seven universities whose curriculums on CAM have not been available. Collected data were statistically analyzed by using SAS 8.02 system, and the study results are as follows: 1. The average of subjects' behavior toward CAM was 3.52 of the total 5 with practical affairs 3.79. medical treatment 3.79, social concerns 3.84, and communication 3.78. 2. Most nursing students $(90.6\%)$ did not precisely understand the meaning of CAM although they had heard of it. Most of them $(85.5\%)$ had no experience of applying CAM. The study also revealed that more qualified CAM lecturers in the future are needed: specialist in the relevant field $(83.2\%)$, doctor and herb doctor $(6.5\%)$, clinical nurse $(6.0\%)$ and professor of the department of nursing science $(4.3\%)$. 3. Concerning students' behavior toward CAM, there were statistically significant difference between students from agrarian and fishing villages (F=4.91. p=.007) and the others. 4. CAM courses that students want were therapeutic touch (massage) $(22.9\%)$. aroma therapy $(14.8\%)$, manual healing methods $(14.7\%)$, treatment of blood vessel $(8.3\%)$, foot reflexology $(7.9\%)$, and heart remedy $(6.8\%)$. In conclusion, the study indicated that nursing students had positive attitudes toward CAM and for this. healers should have a frank talk with patients in order to maximize symptom-relieving effects. However, the study showed that most nursing students did not understand the exact meaning of CAM. Considered the fact that improvement of both health status and quality of life will be an important issue in the future, active introduction and education of CAM in nursing curriculum are a matter of necessity.

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Expanded Object Localization Learning Data Generation Using CAM and Selective Search and Its Retraining to Improve WSOL Performance (CAM과 Selective Search를 이용한 확장된 객체 지역화 학습데이터 생성 및 이의 재학습을 통한 WSOL 성능 개선)

  • Go, Sooyeon;Choi, Yeongwoo
    • KIPS Transactions on Software and Data Engineering
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    • v.10 no.9
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    • pp.349-358
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    • 2021
  • Recently, a method of finding the attention area or localization area for an object of an image using CAM (Class Activation Map)[1] has been variously carried out as a study of WSOL (Weakly Supervised Object Localization). The attention area extraction from the object heat map using CAM has a disadvantage in that it cannot find the entire area of the object by focusing mainly on the part where the features are most concentrated in the object. To improve this, using CAM and Selective Search[6] together, we first expand the attention area in the heat map, and a Gaussian smoothing is applied to the extended area to generate retraining data. Finally we train the data to expand the attention area of the objects. The proposed method requires retraining only once, and the search time to find an localization area is greatly reduced since the selective search is not needed in this stage. Through the experiment, the attention area was expanded from the existing CAM heat maps, and in the calculation of IOU (Intersection of Union) with the ground truth for the bounding box of the expanded attention area, about 58% was improved compared to the existing CAM.

Use of Complementary and Alternative Medicine among Cancer Patients in Korea (우리나라 소화기암 환자들의 대체의료이용에 관한 연구)

  • Jung, Eun-Young;Han, Dong-Woon;Choi, Byung-Hee;Kim, You-Kyum;Park, Yeon-Hee
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.21 no.6
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    • pp.1590-1596
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    • 2007
  • Complementary and alternative medicine (CAM) has gained in popularity among cancer patients in recent years. The use of CAM in cancer patients is common with about one third of patients using some form of CAM in Western countries. The purpose of this study was to analyze the use of CAM and determine what factors affect to use CAM among cancer patients to provide CAM therapy information and assist therapy selection among various CAM therapies to cancer patients. The design of the study was descriptive cross-sectional, and data were collected using a 16-item questionnaire. This study was conducted in subjects with confirmed diagnosis of stomach, colon, liver, or pancreas cancer, in both out-patients clinics and inpatients setting in a tertiary hospital in Seoul Korea. As a result, among the participants, past or current CAM use was reported by 75%, which shows a statistically significant difference in income groups(P<0.05), but no difference in age and religion groups. The most common therapies use by cancer patients included traditional Korean medicine (32.1%), folk remedies (26.6%), exercise (14%), dietary supplements (11.6%), physical therapy (9.9%), diet therapy (5%), and meditation (4%). 77.8% of patients show satisfaction and 64.4% shows perceived effectiveness of CAM. Male patients with higher income, and previous treatment were more likely to use CAM. The main benefits from CAM reported by cancer patients were psychological improvement and symptom improvement. Of the cancer patients used CAM, 30.9% were dissatisfied, 25.8% did not have benefits from the use, and 7.6% experience side effects. Cancer patients who prefer CAM (more than 3 kinds) used it to cure cancer, on the contrary, the one who do not prefer CAM used to improve symptoms and psychological stability. The main sources of information about CAM were family and friends(54.4%), and media(24.5%), doctor and nurse(18.3%), and religion group(2.6%). Findings suggest that due to the relatively high use of CAM among cancer patients in Korea, this topic should be taken into account in the development of a holistic approach to cancer patients and efficient cancer patients management system and proactive and consistent management of CAM is necessary in the health care system in Korea.

Complementary and Alternative Medicine Use by Gynecologic Oncology Patients in Turkey

  • Nazik, Evsen;Nazik, Hakan;Api, Murat;Kale, Ahmet;Aksu, Meltem
    • Asian Pacific Journal of Cancer Prevention
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    • v.13 no.1
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    • pp.21-25
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    • 2012
  • The use of complementary and alternative medicines (CAM) among women with gynecologic cancer is becoming increasingly popular. Therefore, it is important to gain insight into the prevalence and factors related to the use of CAM. The aim of this study was to assess the use of CAM in women with gynecologic cancer. This is a descriptive cross-sectional study. Data were obtained from 67 gynecological cancer patients at gynecologic oncology clinic of a hospital in Turkey between October 2009 to December 2010 using a questionnaire developed specifically for this study. The instrument included questions on socio-demographic information, disease specifics and complementary and alternative medicine usage. On the basis of women's responses, all participants were divided into 2 groups: CAM users and nonusers. The findings indicated that 61.2% of the women reported the use of 1 or more CAM therapies. There were no significant differences in the sociodemographic and clinical characteristics between CAM users and nonusers (P <0.05). The most frequently used CAM method was herbal therapy (90.2%) and the second was prayer (41.5%). The main sources of information about CAM were informal (friends/ family members). A considerable proportion (56.1%) of CAM users had discussed their CAM use with their physicians or nurses. Turkish women with gynecologic cancer frequently use CAM in addition to standard medical therapy. Nurses/ oncologists caring for women with gynecologic cancer should initiate a dialogue about usage of CAM, discussing the potential adverse effects of CAM and the patient's therapeutic goals.

Performance Improvement of Tone Compression of HDR Images and Qualitative Evaluations using a Modified iCAM06 Technique (Modified iCAM06 기법을 이용한 HDR 영상의 tone compression 개선과 평가)

  • Jang, Jae-Hoon;Lee, Sung-Hak;Sohng, Kyu-Ik
    • Journal of Korea Multimedia Society
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    • v.12 no.8
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    • pp.1055-1065
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    • 2009
  • High-dynamic-range (HDR) rendering technology changes the range from the broad dynamic range (up to 9 log units) of a luminance, in a real-world scene, to the 8-bit dynamic range which is the common output of a display's dynamic range. One of the techniques, iCAM06 has a superior capacity for making HDR images. iCAM06 is capable of making color appearance predictions of HDR images based on CIECAM02 and incorporating spatial process models in the human visual system (HVS) for contrast enhancement. However there are several problems in the iCAM06, including obscure user controllable factors to be decided. These factors have a serious effect on the output image but users get into difficulty in that they can't find an adequate solution on how to adjust. So a suggested model gives a quantitative formulation for user controllable factors of iCAM06 to find suitable values which corresponds with different viewing conditions, and improves subjective visuality of displayed images for varying illuminations.

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Immune Responses to Plant-Derived Recombinant Colorectal Cancer Glycoprotein EpCAM-FcK Fusion Protein in Mice

  • Lim, Chae-Yeon;Kim, Deuk-Su;Kang, Yangjoo;Lee, Ye-Rin;Kim, Kibum;Kim, Do Sun;Kim, Moon-Soo;Ko, Kisung
    • Biomolecules & Therapeutics
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    • v.30 no.6
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    • pp.546-552
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    • 2022
  • Epidermal cell adhesion molecule (EpCAM) is a tumor-associated antigen (TAA), which has been considered as a cancer vaccine candidate. The EpCAM protein fused to the fragment crystallizable region of immunoglobulin G (IgG) tagged with KDEL endoplasmic reticulum (ER) retention signal (EpCAM-FcK) has been successfully expressed in transgenic tobacco (Nicotiana tabacum cv. Xanthi) and purified from the plant leaf. In this study, we investigated the ability of the plant-derived EpCAM-FcK (EpCAM-FcKP) to elicit an immune response in vivo. The animal group injected with the EpCAM-FcKP showed a higher differentiated germinal center (GC) B cell population (~9%) compared with the animal group injected with the recombinant rhEpCAM-Fc chimera (EpCAM-FcM). The animal group injected with EpCAM-FcKP (~42%) had more differentiated T follicular helper cells (Tfh) than the animal group injected with EpCAM-FcM (~7%). This study demonstrated that the plant-derived EpCAM-FcK fusion antigenic protein induced a humoral immune response in mice.

Cam Profile Design of a Fuel Pump Using Dynamic Analysis (동해석을 이용한 연료펌프의 캠 형상 설계)

  • Kim Bong-Ho;Lee Boo-Youn;Kim Won-Jin
    • Journal of Advanced Marine Engineering and Technology
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    • v.30 no.1
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    • pp.58-64
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    • 2006
  • This work focuses on reducing the noise and vibration levels of an LPi fuel pump, which are generated from the dynamic motions of pump elements and non-uniform flow of fuel. The noise and vibration levels increase as the revolution speed of the cam goes up. The fuel pump consists of five cavity cells, plungers and diaphragms, which are driven by the cam. The optimal design of the cam profile is performed to decrease the accelerations of moving Parts and to obtain a smooth hydraulic force through a dynamic analysis of a cam-plunger mechanism. The cam-Plunger with a cavity is modeled as a 2 degrees of freedom system having non-linear contacts, the cam profile being represented in terms of Fourier series in order to determine the optimal shape of the cam. From the optimized cam Profile, the acceleration of the diaphragm is reduced in $78\%$, the hydraulic force becoming smoother in case that the hydraulic force is rapidly dropped.

A Study on Korean Medical Students' Perception Towards Complementary Alternative Medicine (보완대체의학에 대한 한의대생의 인식 조사)

  • Kim, Ji-Young;Jung, Duk-Jin;Lee, Jae-Hyok
    • Journal of Oriental Neuropsychiatry
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    • v.25 no.2
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    • pp.143-152
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    • 2014
  • Objectives: The purpose of this research is to examine the perceptions that current Korean medical students have towards the practice and efficacy of Complementary Alternative Medicine (CAM). Methods: A survey questionnaire was given to 91 Korean medical students assessing their attitudes towards CAM. Results: 1) Most students (82.4%) expressed concern about CAM. 2) Many students (59.3%) expressed a positive attitude towards the efficacy of CAM. No surveyed student (0%) thought the efficacy of CAM was due to the placebo effect. 3) Many students (75.8%) posited that Korean Medicine would ultimately absorb CAM to facilitate the development of Korean medicine. 4) Most surveyed students (87.9%) answered they planned to integrate the use of CAM in their clinical practice. Conclusions: The survey questionnaire results suggests that Korean medical students have a positive perception toward CAM. They also have an affirmative attitude towards the clinical use of CAM.