• Title/Summary/Keyword: CAM work

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Why do registered nurses choose to offer complementary and alternative medicine?

  • Johannessen, Berit
    • CELLMED
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    • v.2 no.1
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    • pp.7.1-7.4
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    • 2012
  • The use of Complementary and Alternative Medicine (CAM) is increasing in Norway. A growing number of nurses choose to offer CAM, and the purpose of the study presented in this article was to examine the reasons for their choices. Fieldwork including interviews with 20 nurses offering CAM was conducted. The results showed that the nurses in general are not satisfied with the public health service. They had four main reasons for their choice to offer CAM: 1. A desire to perform holistic nursing. 2. A tendency to value self-realization. 3. A wish to experience meaning in their work and develop a stronger professional identity. 4. A freedom to mix care and cure. The results of this study are also discussed in view of medicalization.

A Dedicated CAM for Welding Automation System in Assembly Line at Shipyards (조선 대조립 용접라인의 CAD/CAM 시스템 적용)

  • Kim, Eun-Jung;Lee, Si-Youl;Kim, Byung-Su;Park, Jin-Hyung;Park, Young-Jun
    • Proceedings of the KSME Conference
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    • 2003.11a
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    • pp.1757-1762
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    • 2003
  • For coping with various ship types easily, welding automation using CAD/CAM is demanded and and developed. In this paper we propose a dedicated CAM system which generates MACRO files to control robot manipulators. The paper contains CAD interface, virtual simulation, macro generation and job schedulling. At first, it defines and extracts weldline from CAD data, and generates proper MACRO programs. And it obtains optimum job schedules. This system removes the manual work, and consequently reduces the overall lead time. And it reduces costs and time for developing robot welding programs. This can be expanded to virtual factory simulation technology. Moreover, it is possible to apply this system for automation of Cutting and Painting

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Hot Forming Design of a CAM for Vessel Engine (선박엔진용 캠의 열간 성형공정설계)

  • Yeom, J.T.;Kim, J.H.;Kim, J.H.;Hong, J.K.;Lee, J.S.
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • 2009.05a
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    • pp.417-420
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    • 2009
  • The hot forming process of a CAM for vessel engine was designed by finite element (FE) simulation and experimental analysis. An aim of process design was to achieve the near-net shaped CAM forgings by hot forging process. Based on the compression test results of the low alloy steel, deformation processing map was generated using the superposition approach between the dynamic materials model (DMM) and flow stability and/or instability criteria. From the processing map, the initial heating temperature was determined as $1200^{\circ}C$. FE analysis was simulated to predict the formation of rolling defects and deformed shape with different forging designs. Optimum process design suggested in this work was made by comparing with the CAM for vessel engine manufactured by actual forging process.

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Study on the Transient EHL Fluid Film for the Dynamic Contact Behaviors between Cam and Follower with Multigrid Multilevel Method (다중격자 다중차원 기법을 응용한 캠과 종동물의 비정상 상태의 유막특성 연구)

  • 장시열
    • Tribology and Lubricants
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    • v.20 no.3
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    • pp.132-139
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    • 2004
  • Many researches about the contacts between cam and follower have investigated EHL film thickness either without dynamic loading effect or only with curve fitting formula such as Dowson-Hamrock's, because including squeeze film effect makes it hard to obtain convergence and stability of computation. Therefore, inaccurate information about minimum film thickness without dynamic loading condition causes inappropriate design of cam profiles and wrong selection of cam and follower materials. In this work, computation tools both for kinematics and dynamics of valve train system of push-rod type and for fluid film thickness with elastic deformation on the basis of dynamic loading condition with multigrid multi-level method is developed. The computational results of minimum film thickness with the respects of both static and dynamic loading conditions are compared for the contact of flat follower over the entire cycle.

Study on BLENDED CAM DESIGN (복합곡선으로 이루어진 캠의 설계에 관한 연구)

  • Yang, Min-Yang;Shon, Tae-Young
    • Journal of the Korean Society for Precision Engineering
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    • v.12 no.9
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    • pp.59-65
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    • 1995
  • The cam is used to a main component in a variety of automatic machines and instruments. To meet the demand of a complicated operation and of reducing weight for automatic machine, Curve Blending Technology, in which each of the basic curves suitable for individual interval is connected, is used for the cam design. In the curve blending, it is necessary to select appropriate elementary curve for each interval and to confirm the dynamic continuity at connecting points between adjoining elementary curves. This paper represented the elementary curve selection method to select an appropriate curve for each interval, and executed computation for the follower displacement and angular displacement of each interval. The paper made an analysis and examine closely for elementary curves to synthesizing curve blending, and it performed dynamic conditions clearly at every points on the cam motions. Therefore the curve blending technology presented by the paper turned into easier work.

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Integration of Multi-scale CAM and Attention for Weakly Supervised Defects Localization on Surface Defective Apple

  • Nguyen Bui Ngoc Han;Ju Hwan Lee;Jin Young Kim
    • Smart Media Journal
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    • v.12 no.9
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    • pp.45-59
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    • 2023
  • Weakly supervised object localization (WSOL) is a task of localizing an object in an image using only image-level labels. Previous studies have followed the conventional class activation mapping (CAM) pipeline. However, we reveal the current CAM approach suffers from problems which cause original CAM could not capture the complete defects features. This work utilizes a convolutional neural network (CNN) pretrained on image-level labels to generate class activation maps in a multi-scale manner to highlight discriminative regions. Additionally, a vision transformer (ViT) pretrained was treated to produce multi-head attention maps as an auxiliary detector. By integrating the CNN-based CAMs and attention maps, our approach localizes defective regions without requiring bounding box or pixel-level supervision during training. We evaluate our approach on a dataset of apple images with only image-level labels of defect categories. Experiments demonstrate our proposed method aligns with several Object Detection models performance, hold a promise for improving localization.

Evaluation on a Miller Cam for Improving the Fuel Consumption of a Large Diesel Engine (대형 디젤 엔진의 연비 향상을 위한 Miller Cam 평가)

  • Song, Changhoon;Wang, Tae Joong;Im, Heejun
    • Transactions of the Korean Society of Automotive Engineers
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    • v.24 no.1
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    • pp.47-52
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    • 2016
  • Miller timing is one of the promising ways which can improve the fuel consumption of internal combustion engines. Indeed, Miller timing employing an early intake valve close is widely applied to large diesel and gas engines to enhance performance and reduce NOx emissions. In this study, performance evaluation is carried out by 1-D cycle simulation in order to estimate the effect of Miller CAM timing before BDC for a 32 L turbocharged diesel engine. To optimize Miller CAM timing, a single stage turbocharger is matched with an early intake valve close since boost pressure is a significant parameter that can control compression work in a turbocharged engine. The engine simulation result shows that there is enough potential to improve fuel consumption rate and also reduce NOx emissions at the same time.Abstract here.

A Study on Optimum Cam Profile Extraction Considering Dynamic Characteristics of a Cam-Valve System (밸브 기구의 동특성을 고려한 캠 형상 설계에 관한 연구)

  • 박경조;전혁수;박윤식
    • Transactions of the Korean Society of Mechanical Engineers
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    • v.13 no.1
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    • pp.29-39
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    • 1989
  • In this work, a numerical and experimental study was done to get an optimum cam profile considering dynamic characteristics of a cam-valve system. First of all, a four degree of freedom dynamic model was set up for an OHV type cam-valve acceleration while not modifying original cam shape greatly. Also another optimization which aims to enlarge the valve displacement area while reducing the peak valve acceleration, was tried. The optimized cam profile was tested experimentally and found that the measured valve displacement and pushrod force show only very small error from the analytically predicted model simulation results.

Should CAM and CAM Training Programs Be Included in the Curriculum of Schools That Provide Health Education?

  • Onal, Ozgur;Sahin, Deniz Say;Inanc, Betul Battaloglu
    • Journal of Pharmacopuncture
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    • v.19 no.4
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    • pp.344-349
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    • 2016
  • Objectives: This study aimed to determine the knowledge levels and attitudes of School of Health and Vocational School of Health students toward complementary and alternative medicine (CAM). Methods: Three hundred thirty-three (333) students studying at the Mehmet Akif Ersoy University School of Health and the Golhisar Vocational School of Health in Burdur, Turkey, were included in the study. Research data were collected by using a survey method based on the expressed opinions of the participants. Results: Of the participants, 69.7% were female and 97% were single (unmarried). Of cigarette users and those with chronic illnesses, 46.8% and 47.8%, respectively, used CAM. Those using CAM were statistically more likely to be female (P < 0.021), to have higher grades (P < 0.007), to be single (P < 0.005), to be vocational school of health graduates (P < 0.008), and to have fathers at work (P < 0.021). While 9.6% of the students thought CAM to be nonsense, 10.8% thought that the methods of CAM should be tried before consulting a doctor. Conclusion: A majority of the students in the study population were found to use complementary and alternative medicine, but that they lacked information about its methods. As a way to address this, CAM should be included in the curriculum of schools that provide health education, and CAM training programs should be given to healthcare professionals to improve their knowledge of CAM. In Turkey, many more studies should be performed to determine nurses' and doctors' knowledge of and attitudes about CAM methods so that they can give correct guidance to society and take more active responsibility in improving patient safety.

About Korean Precious Metal Industrial Activation Plan Research (With a Focus on Synthetic Gem) (한국 귀금속산업 활성화 방안분석(CAD/CAM을 중심으로))

  • Park, Seung-Chul
    • The Journal of the Korea Contents Association
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    • v.9 no.12
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    • pp.613-621
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    • 2009
  • Except for traditional industrial art and history of design development, Korea jewelry industry before 1980's, had little meaning in the aspect of marketing and business. Domestic jewelry market which have changed from the value of goods to value of ornaments, faced important transition point for jewelry industry by the chance of in Asian Game held in 1986, and money of overseas traveler after 1980s. The rapidly-grown Jewelry field by the introduction of detail casting method to make it possible mass-production of the products before 1990's, began to change into new system, with introducing CAD/CAM after 1990's. Jewelry industry has changed from manual work called handmade to the detail casting industry based on master for mass-production. For this, the development of master, with the design development, have been suggested as important task to jewelry industry firms, and by the introduction of CAD/CAM, the diversification of design and master development has been made up. In this study, we would try to find out current status of domestic jewelry field and to understand CAD/CAM, and advantage of CAD/CAM, and through this, suggest good solution to precipitate domestic jewelry market.