• Title/Summary/Keyword: 3D Point Data

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The Impact of Safety Climate and Fatigue on Safety Performance of Operating Room Nurses (수술실 간호사의 안전분위기와 피로 수준이 안전이행에 미치는 영향)

  • Choi, U-Eun;Kim, Hyun-Young
    • Journal of Korean Academy of Nursing Administration
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    • v.22 no.5
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    • pp.471-479
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    • 2016
  • Purpose: This study was conducted to evaluate the level of safety climate, fatigue, and safety performance and to identify the impact of safety climate and fatigue on the safety performance of operating room nurses. Methods: The study design was a descriptive survey. Participants were 174 operating room nurses from two general hospitals and two university hospitals in S and D cities. Three structurally designed questionnaires were used to evaluate their safety climate, fatigue, and safety performance. Collected data were analyzed using descriptive analysis, t-tests, ANOVAs, Pearson correlation coefficient, and stepwise multiple regression. Results: Safety performance of operating room nurses had a mean of 3.26 on a 5-point scale. 'Current department career'(${\beta}=.17$, p=.006) and 'safety climate (work-unit contribution) (${\beta}=.63$, p<.001) accounted for 39% of the variance in operating room nurses' safety performance. Conclusion: Findings indicate that work-unit contribution towards safety climate is an important factor in increasing operating room nurses' safety performance. Therefore, it is essential to find motivational properties consistent with the characteristics of the operating room environment.

A Study of Skin Resistance of Jeong-Acupuncture Points Using the Compound Electrode (복합전극을 이용한 정혈의 최대피부저항특성에 관한 연구)

  • 최진욱;최귀원;박영배
    • The Journal of Korean Medicine
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    • v.24 no.1
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    • pp.100-109
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    • 2003
  • Objectives : The purpose of this study is to 1. measure the skin resistance of jeong-acupuncture points using compound electrode, and 2. develop a database of skin resistance based on age and gender. Methods : The skin resistance of jeong-acupuncture points on the hands and feet of 191 healthy volunteers was measured using a specially designed compound electrode. A constant current of $5{\mu\textrm{A}}$ was applied to the measurement points and the skin resistance was obtained using amplifier, A/D converter and Acknowledge software program, Results : 1. ANOVA statistical analysis showed no significant differences between jeong-acupuncture points on hands and feet. 2. Paired samples t-test showed no significant differences between Yin-Yang meridian points, 3. When the data were sorted by gender, factor analysis showed statistically significant differences between male and female groups in all measured points except for left foot. 4. Based on the factor analysis, a significant relationship between the skin resistance and age was found in feet. However, no such relationship was found in hands. Conclusions : There are differences in skin resistance according to sex and age, Further clinical research is necessary using compound electrode method.

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A Visual Effect according to Pants Style and Geometric Pattern - Using a 3D Virtual Garment System - (가상착의 시스템을 이용한 팬츠 스타일과 기하학 무늬의 특성에 따른 시각적 효과)

  • Park, Woo Mee
    • Fashion & Textile Research Journal
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    • v.15 no.4
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    • pp.504-513
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    • 2013
  • This study evaluates the difference of visual effect according to pant style and geometric pattern. The researcher made 28 stimuli-combination of four pant Stiles (classic, baggy, skinny, and bell-bottom) and seven geometric pattern (large vertical stripe, small vertical stripe, large horizontal stripe, small horizontal stripe, large check, small check, and hound's tooth check). The test involved 96 female college students. The stimuli were made with the i-Designer computer program. The panels tested the computer screen images of all manikins wearing pants. A 7-point scale was used to evaluate each image. For the data analysis, ANOVA and Duncan-test were applied along with an SPSS program. The results of this study are as follows. Three factors (lower-body compensation, abdomen highlight, and length compensation) influenced the visual effect pant styles and geometric patterns. The skinny style and large vertical stripe evaluated positively in elongated height and leg length and a slimmer overall body. It was shown that the vertical stripe pattern was evaluated as more positive than the horizontal stripe pattern in the visual effect; particularly, the results showed distinct aspects in the classic pants style. The mutual influence of the visual effect (according to pants style and geometric pattern) were indicated as two factors of lower-body compensation and length compensation. A more positive visual effects resulted in a higher mutual influence on pant style and geometric pattern.

A Study of the 3D Unmanned Remote Surveying for the Curved Semi-Shield Tunneling

  • Lee, Jin-Yi;Jun, Jong-Woo
    • 제어로봇시스템학회:학술대회논문집
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    • 2005.06a
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    • pp.1791-1796
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    • 2005
  • Semi-shield tunneling is one of the propulsion construction methods used to lay pipes underground between two pits named 'entrance' and 'destination', respectively. Usually a simple composition, such as 'a fiducial target at the entrance+a total station (TS)+a target on the machine', is used to confirm the planned course. However, unavoidable curved sections are present in small-sized pipe lines, which are laid after implementation of a road system, for public works such as waterworks, sewer, electrical power, and gas and communication networks. Therefore, if the planned course has a curved section, it is difficult to survey the course with the abovementioned simple composition. This difficulty could be solved by using the multiple total stations (MTS), which attaches the cross type linear LED target to oneself. The MTS are disposed to where each TS can detect the LED target at the other TS or the base point or the machine. And the accurate relative positions between each MTS and target are calculated from measured data. This research proposes the relative and absolute coordinate calculation algorithm by using three MTS to measure a curved course with 20m curvature at 30m maximum distance, and verifies the algorithm experimentally.

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Defect Chemistry of the Mixed Conducting Cage Compound Ca12Al14O33

  • Janek, J.;Lee, D.K.
    • Journal of the Korean Ceramic Society
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    • v.47 no.2
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    • pp.99-105
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    • 2010
  • The electrical transport properties of mayenite ($Ca_{12}Al_{14}O_{33}$ or $12CaO{\cdot}7Al_2O_3$; mostly abbreviated as $C_{12}A_7$) can be controlled in a wide range by varying the oxygen deficiency: At high temperatures mayenite becomes either an oxygen solid electrolyte, a mixed ionic/electronic conductor or an inorganic electride with metal-like properties upon chemical reduction (removing oxygen). The underlying defect chemistry can be understood on the basis of a relatively simple model-despite the complex cage structure: A point defect model based on the assumption that the framework $[Ca_{12}Al_{14}O_{32}]^{2+}$ acts as a pseudo-donor describes well the high temperature transport properties. It accounts for the observed conductivity plateau at higher oxygen activities and also describes the experimentally observed oxygen activity dependence of the electronic conductivity with -1/4 slope at temperatures between 800 and $1000^{\circ}C$. Doping effects in mayenite are still not well explored, and we review briefly the existing data on doping by different elements. Hydration of mayenite plays a crucial role, as Mayenite is hygroscopic, which may be a major obstacle for technical applications.

A vision system for autonomous material handling by static and dynamic range finding (정적 및 동적 range 검출에 의한 원료 처리 자동화용 vision 시스템)

  • 안현식;최진태;이관희;신기태;하영호
    • Journal of the Korean Institute of Telematics and Electronics S
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    • v.34S no.10
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    • pp.59-70
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    • 1997
  • Until now, considerable progress has been made in the application of range finding techanique performing direct 3-D measurement from the object. However, ther are few use of the method in the area of the application of material handing. We present a range finding vision system consisting of static and dynamic range finders to automate a reclaimer used for material handling. A static range finder detects range data of the front part of the piles of material, and a height map is obtained from the proposed image processing algorithm. The height map is used to calculate the optimal job path as features for required information for material handling function. A dynamic range finder attached on the side of the arm of the reclaimer detects the change of the local properties of the material with the handling function, which is used for avoiding collision and detecting the ending point for changing direction. the developed vision systm was applied to a 1/20 simulator and the results of test show that it is appropriate to use for automating the material handling.

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AERODYNAMIC DESIGN AND NUMERICAL ANALYSIS OF PROPANE REFRIGERANT CENTRIFUGAL COMPRESSOR FOR LNG PLANT (LNG 플랜트용 프로판 냉매 압축기 공력설계 및 수치해석)

  • Park, J.H.;Lee, W.S.;Kang, K.J.;Shin, Y.H.;Lee, Y.P.;Kim, K.H.;Chung, J.T.
    • 한국전산유체공학회:학술대회논문집
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    • 2010.05a
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    • pp.167-173
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    • 2010
  • In this study, flow structure in a three-stage centrifugal compressor for LNG Plant with the refrigerant, Propane, was numerically investigated at the design point of the compressor using a commercial code. Flow characteristics in the passages of impeller and vaneless diffuser were analyzed in detail including velocity vector, Mach number and pressure contours in blade spanwise and meridional plane for each stage. The estimation on the one-dimensional output from the preliminary design and three-dimensional shape of the impeller blade was performed through the flow analysis. The verification for designed compressor was carried out from three-dimensional Navier-Stokes analysis. The results will be used as reference data for a new design of 3-D impeller shape to improve propane refrigerant compressor performance.

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The Center Locus Estimation of the Evoked Potential Distributions During Visual Stimulation in Human (시각 자극 동안의 유발성 전위분포 의 중심점 추적에 관한 연구)

  • Park, Gwang-Seok;Min, Byeong-Gu;Lee, Chung-Ung
    • Journal of the Korean Institute of Telematics and Electronics
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    • v.20 no.3
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    • pp.6-12
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    • 1983
  • The visual evoked potentials were measured using 19 electrodes attached to the scalp in 5 normal and 4 abnormal subjects during visual stimulation and these data were sampled for computer processing with 500 Hz sampling frequency. The center of potential distributions and its time-dependent locus were estimated from these potential distributions using weighting matrix which was determined by the electrodes' position coordinates. In normal subjects these estimated electrical signals were shown to propagate from the frontal lobe to the occipital lobe of the cortex following the known visual pathway. In abnormal subjects, there were significant differences in these estimated propagation pathway. The relationships among this model, the point source model and the dipole source model were analyzed.

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Base isolated RC building - performance evaluation and numerical model updating using recorded earthquake response

  • Nath, Rupam Jyoti;Deb, Sajal Kanti;Dutta, Anjan
    • Earthquakes and Structures
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    • v.4 no.5
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    • pp.471-487
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    • 2013
  • Performance of a prototype base isolated building located at Indian Institute of Technology, Guwahati (IITG) has been studied here. Two numbers of three storeyed single bay RCC framed prototype buildings were constructed for experimental purpose at IITG, one supported on conventional isolated footings and the other on a seismic isolation system, consisting of lead plug bearings. Force balance accelerometers and a 12 channel strong motion recorder have been used for recording building response during seismic events. Floor responses from these buildings show amplification for the conventional building while 60 to 70% reduction has been observed for the isolated building. Numerical models of both the buildings have been created in SAP2000 Nonlinear. Infill walls have been modeled as compression struts and have been incorporated into the 3D models using Gap elements. System identification of the recorded data has been carried out using Parametric State Space Modeling (N4SID) and the numerical models have been updated accordingly. The study demonstrates the effectiveness of base isolation systems in controlling seismic response of isolated buildings thereby leading to increased levels of seismic protection. The numerical models calibrated by relatively low level of earthquake shaking provides the starting point for modeling the non-linear response of the building when subjected to strong shaking.

The Depression Predictors among Patients with Peg-interferon Treated Hepatitis C (페그-인터페론 치료를 받는 C형 간염 환자의 우울 예측요인)

  • Kim, Ha-Na;Lee, Eun-Nam
    • Korean Journal of Adult Nursing
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    • v.26 no.2
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    • pp.214-222
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    • 2014
  • Purpose: This study was to identify factors predicting the occurrence of depression among patients with hepatitis C treated with Peg-interferon. Methods: The subjects were 134 patients treated with Peg-interferon after the diagnosis with hepatitis C at the D University Hospital and 3 hospitals located in Busan, South Korea. The predictors of depression were identified by measuring the general characteristics of the subjects and their disease-related characteristics, social support, sleep disorders, and degree of side effects by interferon. The data were analyzed with a t-test, ANOVA, and logistic regression using the SPSS/WIN 18.0 program. Results: Sixty-six point four percent of the subjects suffered from mild to more severe depression. Fatigue, hair loss, itching, and sleep disorders turned out to be significant predictors. In addition, the explanatory power of these variables for the occurrence of depression was 70%. Conclusion: Sleep disorders and drug side effects were determined to have significant influence on the development of depression in hepatitis C patients treated with Peg-interferon. Therefore, the development of nursing intervention programs aimed to prevent depression by effectively managing sleep disorders and side effects is mandated in future to help the given population.