• 충청수학회지
• /
• 제25권2호
• /
• pp.253-265
• /
• 2012

Gottlieb polynomials were introduced and investigated in 1938, and then have been cited in several articles. Very recently Khan and Akhlaq introduced and investigated Gottlieb polynomials in two and three variables to give their generating functions. Subse- quently, Khan and Asif investigated the generating functions for the $q$-analogue of Gottlieb polynomials. Also, by modifying Khan and Akhlaq's method, Choi presented a generalization of the Gottlieb polynomials in $m$ variables to give two generating functions of the generalized Gottlieb polynomials ${\varphi}_{n}^{m}(\cdot)$. Here, we aim at defining a $q$-extension of the generalized two variable Gottlieb polynomials ${\varphi}_{n}^{2}(\cdot)$ and presenting their several generating functions.

• 대한전기학회논문지
• /
• 제45권2호
• /
• pp.185-192
• /
• 1996

This paper presents a design of vertical axis Darrieus wind turbine combine with Savonius for wind-power generating system to be adapted for variable wind speed. The wind turbine consists of two troposkien- and four Savonius-blades. Darrieus turbine is designed with diameter 9.4[m], chord length 380[mm], tip speed ratio 5. Savonius turbine is designed with diameter 1.8[m], height 2[m], tip speed ratio 0.95. The design of turbine is laid for the main data of rated wind speed 10[m/s], turbine speed 101.4[rpm]. The generating power is estimated to maximum power 20[kW], and this is converted to commercial power line by means of three phase synchronous generator-inverter system. Generating system is designed for operation on VSVF(variable speed variable frequency) condition and constant voltage system.

• 한국수소및신에너지학회논문집
• /
• 제22권3호
• /
• pp.313-318
• /
• 2011

This study is about characteristics of generating efficiency and $NO_x$ emissions of a 30 kW gas engine generator in case of using model biogas with hydrogen addition. In this case, both generating efficiency and $NO_x$ emissions are lower than the case of using urban gas (LNG). However, generating efficiency and $NO_x$ emissions are higher than the case of using model biogas only. It means that adding hydrogen which has a high flame propagation velocity has the possibility to improve the generating efficiency, but simultaneously it is also able to increase the $NO_x$ emissions of a gas engine generator.

• 한국컴퓨터정보학회논문지
• /
• 제21권10호
• /
• pp.125-133
• /
• 2016

In this paper, we propose a real-time fault monitoring and dual system design of the countdown time-generating system, which is the main component of the mission control system. The countdown time-generating system produces a countdown signal that is distributed to mission control system devices. The stability of the countdown signal is essential for the main launch-related devices because they perform reserved functions based on the countdown time information received from the countdown time-generating system. Therefore, a reliable and fault-tolerant design is required for the countdown time-generating system. To ensure system reliability, component devices should be redundant and faults should be monitored in real time to manage the device changeover from Active mode to Standby mode upon fault detection. In addition, designing different methods for mode changeover based on fault classification is necessary for appropriate changeover. This study presents a real-time fault monitoring and changeover system, which is based on the dual system design of countdown time-generating devices, as well as experiment on real-time fault monitoring and changeover based on fault inputs.

• 구강회복응용과학지
• /
• 제23권3호
• /
• pp.227-237
• /
• 2007

Various methods and torque generating devices are developed and employed to apply proper torque clinically. In this study, clinically used torque control devices are measured whether uniformed and precise torque are generated. Digital torque gauge are employed for measurement and torque driver, torque limiting device, torque indicating device are used for torque generating devices. ${\chi}^2$ distribution was formed and One-way ANOVA(Turkey test) was performed to measure torque values generated by each torque generating device. In the results, all companies have been shown slight errors and deviations. This indicates a difficulty of applying precise torque. Therefore, it would be recommended torque generating device should be checked whether uniformed and precise torque can be generated and an error should be corrected.

• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2023년도 봄 학술논문 발표대회
• /
• pp.169-170
• /
• 2023

In this study, light-heat generating materials were produced in two ways, and the performance of two light-generating insulation sheets was reviewed. As a result of the experiment, it was possible to confirm the improved heating performance of the light heating insulation sheet compared to the existing bubble sheet. The light heat insulation sheet (b) showed improved thermal properties compared to the existing bubble sheet, and it is believed that the temperature has increased due to the combined effect of initial hydration heat and heat generation after installation. In future studies additional experiments are needed to compensate for the insufficient insulation performance due to the single bubble sheet through the double bubble sheet and to adjust the amount of light-generating materials added as a consideration of the optimal heat-generating effect of the light-generating insulation sheet (b).

• 한국군사과학기술학회지
• /
• 제27권3호
• /
• pp.416-427
• /
• 2024

The wake-homing underwater guided weapon that detects and tracks wake generated during voyage of a surface ship is impossible to avoid with the present acoustic deception torpedo defense system. Therefore, research on bubble-generating wake decoy is necessary to deceive wake-homing underwater guided weapon. Experiments in various environments are required to verify the effective operation method and performance of the wake decoy, but performance verification through underwater experiment is limited. In this paper, we develop a simulator for an torpedo defense system of surface ship, which is applied bubble-generating wake decoy, against acoustic, wake, and hybrid homing underwater guided weapon attack. The simulator includes surface ship model, acoustic decoy(static, mobile) model, bubble-generating wake decoy model, search and motion model of underwater guided weapon and so on. By integrating various models, MATLAB GUI simulator was developed. Through the simulation results for various environmental variables by this simulator, it is judged that effective operation method and performance verification of the bubble-generating wake decoy can be performed.

• 한국과학교육학회지
• /
• 제26권4호
• /
• pp.568-580
• /
• 2006

이 연구에서는 예비교사들이 생물학 가설을 생성함때 나타나는 4가지 감성 생성 유형을 fMRI 이용하여 객관적이고 실증적인 두뇌 활동에 대한 정보를 조사하였다. 연구를 위해 과학교육을 전공하는 건강한 여자 대학생 10명을 대상으로 3.0T scanner를 사용하여 492초 동안 두뇌 영상을 측정하였다. 측정한 후 언어적 보고 자료를 수집하여 fMRI 영상 자료의 신뢰도를 확보하였다 언어적 보고의 분석 결과 BGP RGP에서는 10명의 피험자가 CGP와 AGP에서는 8명의 피힘자가 유의미한 과학적 감성을 생성하였다. 이들 피험자를 대상으로 SPM2 프로그램을 사용하여 fMRI 영상 자료를 통계 처리하였다. 그 결과 GPSE의 4개 유형별로 독특한 두뇌 활성화 영역들이 나타났다. 이러한 결과는 인지심리학적으로 규명된 4개의 감성 생성 과정이 두뇌에 실제로 존재한다는 것을 경생리학적으로 규명하였다는데 그 의의가 있다. 또한 과학교육에서 fMRI를 활용한 새로운 연구방법의 확립과 사례 연구를 제시하였다는데 큰 가치가 있다. 그리고 생물학가설 생성과정의 총체적 이해에 도움이될 것이다.

• Journal of Acupuncture Research
• /
• 제26권2호
• /
• pp.41-48
• /
• 2009

Objectives : The conventional direct and indirect moxibustion therapies for prostate treatment could not been applied to the acupuncture point of $CV_1$(Conception Vessel Meridian 1, 會陰) because of its boring body region. The position of $CV_1$(會陰) is the back side of hard part between the anus and the genital organ. The conventional moxibustion methods have many troubles in operating to the acupuncture point of $CV_1$(會陰). In order to get rid of these problems, we have suggested the special heat generating terminal especially for prostate. The features of the special heat generating terminal for prostate are the low temperature infrared heater and the adhesive moxa-pad. These features are no burnt, no fiery and especially suitable for the point of $CV_1$(會陰). Methods: The heat generating terminal which is a part of the moxa-extract moxibustion cauterizer is composed of a PTC(Positive Temperature Coefficients) ceramic heater and the adhesive moxa-pad We had got the experimental demonstrations by the stimulating the acupuncture points which are $CV_1$(會陰), $BL_{28}$(Bladder Meridian 28, 膀胱兪), and $CV_3$(Conception Vessel Meridian 3, 中極) with the special heat generating terminal for the prostatitis and the benign prosthetic hypertrophy. And the stimulation level was 43$^{\circ}C$ infrared heat for one hour. The type of thermography is IRIS-5000. Results : With one subject suffering the prostatitis and another subject suffering the benign prosthetic hypertrophy, we cauterized the acupuncture points $CV_1$(會陰), $BL_{28}$(膀胱兪) and $CV_3$(中極) with the special heat generating terminal for prostate. We measured the temperature variations by the thermography before and after stimulations. Finally we estimated the tendency of temperature decreasing in the region of post-stroke urinary symptoms and the improvement of nocturnal enuresis after the stimulations. Conclusions : We suggest that the special heat generating terminal of moxa-extract moxibustion cauterizer proposed herein is effective for the treatment of prostate by NIH-CPSI and IPSS.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 2005년도 ICCAS
• /
• pp.389-392
• /
• 2005

In the maskless photolithography based on the Digital Micromirror Device (DMD) by Texas Instruments Inc. (TI), the micromirror array works as a virtual photomask to write patterns directly onto Flat Panel Display (FPD) at high speed with low cost. However, it is neither simple to generate region-based patterns for the micromirror array nor easy to deliver sequences of patterns for the micromirror controller. Moreover, the quality of lithography yields the precise synchronization between generating sequence of patterns and irradiation rate off micromirrors. In this study, the region-based pattern generating system for maskless photolithography is devised. To verify salient features of devised functionalities, the prototype system is implemented and the system is evaluated with actual DMD based photolithography. The results show that proposed pattern generating method is proper and reliable. Moreover, the devised region-based pattern generating system is robust and precise enough to handle any possible user specified mandate and to achieve the quality of photolithography required by FPD manufacturer.