Earticle

본 연구에서는 경계선 성격장애 성향을 가진 개인들이 정서조절 어려움을 겪는다는 점을 고려하여, 이들이 얼마나 자신의 정서(긍․부정 정서)에 주의를 기울이고 그 정서를 인식할 수 있는지 살펴보았다. 이를 위해, 연구 1에서는 비임상 대학생을 대상으로 경계선 성격장애 성향과 정서인식명확성 간의 관계를 살펴보았는데, 그 결과, 경계선 성격장애 성향이 강할수록 정서인식명확성 수준이 낮은 것으로 나타났다. 특히, 경계선 성격장애 성향은 정서인식명확성의 하위요인인 정서주의와는 유의한 상관이 없는 반면, 정서 명료성과는 유의한 부적 상관이 있는 것으로 확인되었다. 다음으로, 연구 2에서는 연구 1의 참여자 중 경계선 성격장애 성향이 강한 참여자를 대상으로 긍․부정 기분을 유도하여 모의실험을 진행한 결과, 참여자들은 긍정 기분 유도 조건에서는 긍정 기분은 늘어났지만 부정 기분은 감소하지 않는 반면, 부정 기분 유도 조건에서는 부정 기분은 증가하였고 동시에 긍정 기분도 감소하는 것으로 나타났다. 이러한 결과는 경계선 성격장애 성향이 강한 사람들은 긍정 정서에 비해 상대적으로 부정 정서에 강하게 반응함을 의미한다. 마지막으로, 본 연구의 결과를 토대로 본 연구의 학문적 및 임상적 의의와 후속 연구에 대한 제언을 논의하였다.

Given that people with borderline personality disorder (BPD) traits frequently experience emotional dysregulation, the purpose of this study was to examine how much attention they pay to and recognize their positive and negative moods. Study 1 examined the relationship between BPD traits and emotional awareness clarity among non-clinical college students and found that the higher the BPD traits, the lower the emotional awareness clarity. In terms of subscales, BPD traits were not significantly related to emotional attention but were significantly and negatively related to emotional clarity. Study 2 examined a subset of Study 1 participants with high BPD traits. Those assigned to the positive mood induction condition reported more positive mood but no change in negative mood, while those assigned to the negative mood induction condition reported more negative mood and less positive mood.

불연속 지형을 지나는 천수 흐름을 해석할 수 있는 Hwang의 기법이 채택된 수치 모의를 댐 붕괴 흐름에 의한 직립 홍수터의 범람 실험과 비교하였다. 모의 결과는 저수지, 저수로, 홍수터로 이루어진 실험 수로에서 측정한 결과와 잘 일치하였다. 특히, 댐 붕괴 흐름이 직립 홍수터로 차고 빠지는 과정이 잘 모의되었다. 흐름 저항의 종류에 따른 모의 결과의 차이는 미미하였다. 이 연구를 바탕으로 도심 하천의 범람 예측에서 정확도를 높일 수 있을 것으로 기대된다.

Numerical simulation with Hwang's scheme, which can analyze shallow-water flow over discontinuous topography, was compared with a laboratory experiment of flooding on a perpendicular floodplain with dam-break flows. The simulation results were in good agreement with the results measured in an experimental flume with a reservoir, channel, and floodplain. The wetting and drying process on a perpendicular floodplain with a dam-break flow was particularly well simulated. The difference in simulation results according to the type of flow resistance was insignificant. The results of this study are expected to improve the accuracy of predicting inundation in urban rivers.

Abrupt and gradual levee breach analyses on the flat domain were implemented by laboratory experiments and numerical simulations. To avoid the reflective wave from the side wall the experiment was performed in a large domain surrounded by waterway. A numerical model was developed for solving the two-dimensional gradual levee breach flow. The results of the numerical simulation developed in this study showed good agreement with those of the experimental data. However, even if the numerical schemes effectively replicated the trends of the observed water depth for the first shock, there were little differences for the second shock. In addition, even though the model considered the Smagorinsky horizontal eddy viscosity, the location and height of the hydraulic jump in the numerical simulation were not fairly well agree with experimental measurements. This shows the shallow water equation solver has a limitation which does not exactly reproduce the energy dissipation from the hydraulic jump. Further study might be required, considering the energy dissipation due to the hydraulic jump or transition flow from reflective wave.

본 연구의 목적은 CA(Cellular Automata)이론을 기반으로 행위자기반(agent-based) 보행시뮬레이션 모델을 개발하고, 개발된 모델을 보행시설 설치 실험에 적용하여보는 것이다. 이를 위하여 본 연구에서는 보행교통류에 CA이론이 적용된 모델을 검토하고, Fence라는 보행시설이 보행자의 통행속도에 미치는 영향을 분석하기 위해 실험을 계획하고 CA보행자 모델을 구축하였다. 구축된 CA보행자 모델은 초기화, 보행자 발생 유입, 측방이동, 전방이동의 하위모델로 구성되어 있다. 실험결과 Fence를 설치했을 때의 보행속도가 Fence를 설치하지 않았을 때의 보행속도보다 높게 나타나, 통행 방향이 다른 보행자가 혼재되어 있을 경우 Fence를 설치하지 않았을 때의 보행속도보다 높게 나타나, 통행 방향이 다른 보행자가 혼재되어 있을 경우 Fence를 설치하는 것이 효과적인 것으로 나타났다. 또한, Fence의 설치는 매우 혼잡한 상황에서보다 적당한 혼잡상태에서 더 큰 것으로 분석되었다.

The purpose of this paper is the development of an agent-based pedestrian simulation model. The simulation model is based on the Cellular Automata theory. The model consists of four components: initialization, pedestrian generation, lateral movement, and front movement components. We have applied this model for experiment about pedestrian facility. In particular, we have experimented how the installation of fence is effective to resolve conflict pedestrian movements in different directions. We have found that the installation of the fence as a pedestrian facility can divide conflict moving pedestrians effectively. We have also found that the effect of the fence is bigger in slightly congested pedestrian flows than in severely congested pedestrian flows.

As the frontier of Internet development, hybrid, wireless, multi-hop network has transformed the way we live. Nowadays, this network has been engaged in many areas like economy, war, culture, medical treatment, agriculture, ecology, commerce, etc. The concepts of digital coalmine and digital oil field, in special, promote the development of the study on hybrid, wireless, multi-hop network. The paper establishes cybersecurity mechanism by introducing concepts relevant to this network, and by summarizing its internal and external security threats. By conducting simulation experiment to the security mechanism, the paper concludes that to the influence on security mechanism, the number of nodes is in direct proportion, while the transmission period of node connection in inverse proportion. The paper aims to offer reasonable suggestions and guidance to the development of hybrid, wireless, multi-hop network, to promote the application of the wireless network, and to increase its value, solve security problems and ensure sound operation of hybrid, wireless, multi-hop network.

Bovine mastitis is one of the common diseases in the dairy industry, and is also caused by the loss in the dairy industry. Timely and effective detection of bovine mastitis has important significance. By monitoring the milk conductivity values and other parameters, is to automate the monitoring cow health, is the basis of the prevention of bovine mastitis infection. This design is based single-chip microcomputer processing core control sensor measurement unit, data transmission unit, display and control unit, online monitoring system to achieve real-time data collection, transmission, display and other control functions. For monitoring the conductivity values were piecewise linear model of the relationship between the conductivity and the feedback voltage power function curve model comparison with simulation experiment. Simulation results show that the conductivity measurement piecewise linear model is a better, fitter factor, the average relative error is 2.31% lower, measuring range is 0.7 ms / cm-11.7ms / cm. The error of measuring the overall system is of relative low ratio, but the accuracy is higher, and better meets the needs of real-time monitoring, for cow health management and prevention of bovine mastitis or other diseases provide effective technical means.

With the heater pipeline leakage experiment conducted on the experiment table, inner pipeline leakage of heater was studied through the leakage failure detection system. The frequency distribution and the amplitude of acoustic emission signals of leakage versus internal pressure were analyzed. Variations of signals versus leakage aperture and dissemination distance were summarized. According to the mapping relationship between the leaking spot and acoustic emission signals, and between the leakage flow and acoustic emission signals, reasons of leakage failure were concluded. The results would be applied to heater leakage failure detection. And an on-the-spot detection in the power plant was conducted to test the heater under pressure in order to verify the results.

For the issue of being difficult to carry out various experiments of vehicle braking systems, a real-time simulation platform which is an vehicle braking pressure based on xPC Target is proposed. In the design of platform, the method is studied through writing CS-function driver development. Under MATLAB RTW, the problems of hardware simulation in the loop to support I / O device is resolved in xPC Target toolbox. Upon the analysis of the basic principles and structure of the driver, the solution to the key issues such as register operation and base seeking address are studied. And PCI-1710 driver is developed. The verifications about the driver validation of the data acquisition card and closed-loop regulation to the vehicle braking pressure are completed with the platform. The experimental results show that the A / D sampling frequency of acquisition card can be up to 10 kHz, signals can be displayed in real time and the test platform can be long-running. The development process is stable. Pressure waveforms consistent with the waveforms measured by the oscilloscope. The braking pressure can be adjusted by the real-time simulation platform. A new experimental method is provided for research on the vehicle braking performance.

For superalloy GH4169poor processing, tool wear serious, affecting the surface quality of the workpiece and other issues, using the finite element software AdvantEdge to simulate the formation process of superalloy GH4169 chip in two-dimensional, and researching the characterization of serrated chip. Take the single factor experiment and conduct finite element simulation for superalloy GH4169 in changing the rake angle and tip arc radius of the situation. The simulation and the chip shape taking from experiments will be compared to prove the feasibility of the simulation. And find out changes of rake angle and tiparc radius; make clear the influence of degree of serrated chip. The results show: with the rake angle increases, serrated degree increases, and with tiparc radius increases, serrated degree increases. The study provides a reference for reasonable choice of optimized cutting tool geometric parameters.

Owing great to the widespread application of wireless sensor networks, supply energy for these wireless sensors proves to be a significant issue. Moreover, for the ambient vibration lies everywhere, the vibration can supply energy for the wireless sensor via energy harvester. The single cantilever beam piezoelectric energy harvester becomes the research focus for the simple structure and higher energy conversion efficiency. Due to the transcendental equation in distributed parameter model, the numerical method is become powerful complement for theoretical and experimental method. Static analysis, model analysis, harmonic response analysis and mechanical-electrical coupling analysis are simulated in ANSYS. Four aspects of the harvester has been studied in detail. Test and measurement show that Geometry and shape parameters have great affect to piezoelectric single cantilever energy harvester. In addition, the inherent characteristics of piezoelectric patch will affect enormously on the electrical characteristics

According to the actual situation of a university, the emergency evacuation simulation is modeled based on the physical sign, evacuation speed and personnel ratio using the pathfinder software.The experimental construction export utilization rate is compared with the preliminary simulation scenario. The simulation results show that the utilization rate of evacuation stairs and evacuation exits is significantly improved.The optimized solution can provide the most effective evacuation passage, and the research results can provide the basis for the rational planning and management of evacuation passage in university experiment building.

The rubber seal is a part inserted into servo cylinder to keep the air pressure constant. In order for efficient movements of the servo cylinder, the frictional coefficient of the rubber seal needs to be minimized while the sealing is maintained. In this work the friction characteristics of rubber seal specimen are tested on metal plate at various conditions. The experimental conditions include roughness level, applied pressure, lubrication, and rubbing speed. The design of experiment approach is taken to assess the effect of each parameter. The nonlinear frictional response of the rubber is applied to the FEM model simulating the servo cylinder movement. The result demonstrates that precise optimization of the servo cylinder movement must be preceded by preliminary experiments coupled with the theory and FEM model.

Powder injection molding is an important manufacturing technology to mass produce superalloy components with complex shape. Injection molding step is particularly important for realizing a desired shape, which requires much time and efforts finding the optimum process condition. Therefore computer aided engineering can be very useful to find proper injection molding conditions. In this study, we have conducted a finite element method based simulation for the spiral mold test of superalloy feedstock and compared the results with experimental ones. Sensitivity analysis with both of simulation and experiment reveals that the melt temperature of superalloy feedstock is the most important factor for the full filling of mold cavity. The FEM based simulation matches well the experimental results. This study contributes to the optimization of superalloy powder injection molding process.

This paper attempts to examine the characteristics of underwater acoustic signals distorted in shallow water environments. Time signals are simulated using an acoustic model that employs the Fourier synthesis scheme. An acoustic experiment was conducted in the shallow sea near Pohang, Korea, where water depth is about 60m. The environment in the simulation is set up so that it approximates the experimental condition, which can be regarded as range-independent. The signal is LFM(linar frequency modulated) type centered on one of the four frequencies 200, 400, 600 and 800Hz, each being swept up or down with the bandwidth of 100Hz. To analyze the signal characteristics, the study introduces a spectrum estimation scheme, pseudo Wigner-Ville distribution (PWVD). The simulated and measured signals suffer great interference by the interaction of neighboring rays. Although there are constructive or destructive interference, the signals keep LFM characteristics well. This is thought that only a few dominant rays of small loss contribute to the receive signals in a shallow water environment.

Powder injection molding is an important manufacturing technology to mass produce superalloy componentswith complex shape. Injection molding step is particularly important for realizing a desired shape, which requiresmuch time and efforts finding the optimum process condition. Therefore computer aided engineering can be very usefulto find proper injection molding conditions. In this study, we have conducted a finite element method based simulationfor the spiral mold test of superalloy feedstock and compared the results with experimental ones. Sensitivity analysiswith both of simulation and experiment reveals that the melt temperature of superalloy feedstock is the most importantfactor for the full filling of mold cavity. The FEM based simulation matches well the experimental results. This studycontributes to the optimization of superalloy powder injection molding process.

The ball valve is an important device in the pipeline transportation system of nuclear power plants. Its operational stability and safety directly affect the normal working of nuclear power plants. In this study, the transient numerical simulation of the opening and closing process of a ball valve was conducted on the basis of the flow interruption capability experiment of the ball valve by using the moving mesh method and inlet and outlet variable boundary conditions. The flow rate and pressure difference with time of the opening and closing process of the ball valve were studied. The internal flow characteristics of the ball valve under different relative openings were analyzed in conjunction with the typical back-step flow structure. Results show that the transient numerical results agree well with the experimental results. The internal flow characteristics of the ball valve are similar at the same opening during opening and closing process. At small opening, the spool and outlet channels easily form a back-step flow structure. The disappearance and generation of backflow vortices during opening and closing occur at 85% opening and 75% opening, respectively. With the decrease in opening degree, the difference in vortex core area in the flow channel of the ball valve spool in the opening and closing process gradually appears. The research results provide some reference value for the design and optimization of ball valves.

The radial position of OiSF-ring has been meaningful data in industry. Thus it's position was calculated by application of (V/G)/sub crit/ = 0.138 ㎟/minK and point defect dynamics for industrial scale grower with various pull rates. After the calculation, compared with experimental result. OiSF-ring diameters expected with calculation were good agreement with experimental results. In order to show validity of the predicted temperature distribution using STHAMAS which is one of the global simulator for Cz crystal growing, temperature was measured along the axis of crystal using thermocouples, and compared with the calculated temperature. We found the effective thermal conductivity K/sub m/ (r) which gives in accordance with the temperature distribution at the axis of crystal and crystal/melt interface shape between experimental and computational results. Therefore, effective thermal conductivity K/sub m/ (r) was applied instead of solving melt convection problem.