• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.17 no.6
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• pp.552-559
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• 2005

This paper describes an experimental study on the inertance pulse tube refrigerator using a small compressor. The purpose of this experimental study is to identify the performance of the inertance pulse tube refrigerator for various operating conditions and to obtain the optimum configuration. The dead volume effect is verified by two experimental apparatuses with different dead volumes between the compressor and the aftercooler. The refrigerator of the smaller dead volume shows better performance. The influence of operating frequency and charging pressure on the performance of the refrigerator is experimentally investigated. Reducing the regenerator mesh size improves the performance of the refrigerator. Finally, the inertance pulse tube refrigerator has maximum cooling capacity at the specific combination of the pulse tube length and the inertance tube length. The loss analysis is used to analyze and predict the optimum condition of the pulse tube refrigerator.

• English & American cultural studies
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• v.9 no.1
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• pp.297-321
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• 2009

The purpose of this study is to re-read the film of Dead Poets Society, specially focused on a feminist view. The film hides the strategy of recovering the traditional Patriarchal Society. At the beginning, the film resists the values of traditional society through John Keating. His unorthodox methods of teaching literature smack against the traditions of Welton Academy. Furthermore, he stresses on "Carpe Diem"—Seize the Day, the romantic values of free thinking, creativity, and individuality. The forces opposing Keating's philosophy are personified by Welton's rigid, old headmaster, Mr. Nolan, and the cruel, stubborn parent, Mr. Perry. Keating's romantic values are failed by their powerful, dominating attitudes. Effected by Keating's philosophy, Neil decides to pursue acting rather than medicine. He conflicts with his strict father. Finally frustrated by his authority, Neil commits suicide. And Keating is accused of inciting the boys to restart the Dead Poets Society, and at last he is fired. Keating and Neil are victimized by the Patriarchal society. Even though the film concentrates male characters at the all boys' school, it reveals the male angle of binary oppositions between men and women, subject and object, activity and passivity, presence and absence. In the film's dramatic conclusion, English class is now being temporarily taught by Nolan, who has the boys read from the very Pritchard essay they had ripped out at the start of the film. It symbolizes the triumph of the traditional logocentric society. However, influenced by Keating's unconventional attitudes, ultimately Welton Academy will be changed as it is embodied in its closing scene.

• Earthquakes and Structures
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• v.24 no.1
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• pp.1-9
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• 2023

A model for calculating structure interacted mechanics is proposed. A structural interaction model and controller design based on tuned mass damping (TMD) was developed to control the induced vibration. A key point is to introduce a new analytical model to evaluate the properties of the TMD that recognizes the motion-dependent nonlinear response observed in the simulations. Aiming at the problem of increased current harmonics and low efficiency of permanent magnet synchronous motors for electric vehicles due to dead time effect, a dead time compensation method based on neural network filter and current polarity detection is proposed. Firstly, the DC components and the higher harmonic components of the motor currents are obtained by virtue of what the neural network filters and the extracted harmonic currents are adjusted to the required compensation voltages by virtue of what the neural network filters. Then, the extracted DC components are used for current polarity dead time compensation control to avert the false compensation when currents approach zero. The neural network filter method extracts the required compensation voltages from the speed component and the current polarity detection compensation method obtains the required compensation voltages by discriminating the current polarity. The combination of the two methods can more precisely compensate the dead time effect of the control system to improve the control performance. Furthermore, based on the relaxed method, the intelligent approach of stability criterion can be regulated appropriately and the artificial TMD was found to be effective in reducing cross-wind vibrations.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.13 no.1
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• pp.99-108
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• 2014

Recently, the interest in autonomous vehicle which is an aggregate of the automotive control technology is increasing. In particular, researches on the self-localization technology that is directly connected with stable driving of autonomous vehicle have been performed. Various dead reckoning technologies which are solutions for resolving the limitation of GPS have been introduced. However, the conventional dead reckoning technologies have two disadvantages to apply on the autonomous vehicle. First one is that the expensive sensors must be equipped additionally. The other one is that the accuracy of self-localization decreases caused by wheel slip when the vehicle's motion changed rapidly. Based on this background, in this paper, the wheel speed sensor which is equipped on most of vehicles was used and the dead reckoning algorithm considering wheel slip ratio was developed for autonomous vehicle. Finally, in order to evaluate the performance of developed algorithm, the various simulation were conducted and the results were compared with the conventional algorithm.

• The Transactions of the Korean Institute of Power Electronics
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• v.11 no.5
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• pp.395-403
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• 2006

This paper has proposed a new dead time compensation method for a voltage-fed PMW inverter. In the voltage-fed PMW inverter, a voltage distortion is generated by the dead time effect and the nonlinear characteristics of the switching devices. Especially, the distorted voltage causes 5th and 7th harmonics in the stationary phase currents, and 6th harmonic in the synchronous phase currents. As a result, the integrator output of the synchronous PI current regulator has the ripple corresponding to six times of the inverter output frequency. In this paper, the signal of the integrator output of the d-axis current regulator is used as the control signal for the dead time compensation. The experimental and simulation results are presented to verify the validity of the proposed method.

• The Research Journal of the Costume Culture
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• v.8 no.6
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• pp.822-841
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• 2000

The purpose of this study is to organize how the deceased are clothed. Although there are many people who have seen the dead clothed once or twice and although the clothing has been constantly going on, there have been no books or studies on how the deceased are clothed. Instead, the methods have only been handed down orally by seniors and others who are experienced in it. I see the necessity of systematizing the method of clothing the deceased so that both ordinary people as well as experts can utilize it properly to show their sincerity and courtesy towards the dead. This study is based on literature including old books, dissertations, publications, and reports on ethnic customs. It also refers from interview results of shrouds makers, those experienced in clothing the dead, and seniors knowledgeable in the trade. Funeral manifested the social status of the dead. Shrouds of the olden days had different colors, such as white, black, blue, red, etc. according to items. However, nowadays they are white, pink, or partially light blue or sometimes people just keep the colors of their original cloths. Current items do not differ much from those of the ancient times, though Kwadu, Km, and Po, which were used to cover the belly, have been relatively simplified. The form of shrouds has changed nowadays. There are differences in the funeral procedures and how the deceased are clothed. In the olden days, when a person died, the body was cleaned up and clothed the very next after death. Nowadays, the cleansing and clothing of the body and placing the body in the coffin are all done together the following day. According to the foregoing, though there are no big differences in the way the deceased are clothed between the olden days and the present, the order in which Aksu and B누 are placed, differs and the procedures, items and shape have been simplified.

• Journal of the Korean Society of Costume
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• v.51 no.3
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• pp.75-85
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• 2001

The system of washing and shrouding a dead body is a series of procedures for encoffining in funeral rites, which are taken after death indentification by using CHOKWANG and praying for the resurrection of a dead body by calling a soul departed from the body. The washing and shrouding a dead body (hereinafter reffered to as "YEOMSEUP") is the broad concept which contains the procedures of washing, clothing and shrouding the body. The clothing includes washing, putting rices into the mouth. and then dressing while the shrouding includes first wrapping, second-wrapping and encoffining. The clothes for YEOMSEUP (all clothes and articles for funeral rites are designated) will be put in the coffin along with a dead body according to the YEOMSEUP procedures. Dasan, a SILHAK scholar in the late Yi Dynasty, pointed out some problems of the funeral rites observed in those days. At the same time, he found that the problems had arisen from the misinterpretation of the original descriptions in Chinese characters. and had tried to correct them. The books written by Dasan basically emphasized his ideology reshaping the whole procedures by trimming and removing meaningless formalities which are too much luxurious and wasteful and making them as a part of the original principles of the funeral rites. His Intents are clearly shown in his wrings on practical ettiquttes, such as SANGRYESAJON and SANGUIJEOLYO. In its attempt, this study aims at reformulating the DASAN\\`s SANGRYESAJON in terms of YEOMSEUP methods. A lot of virtues of the Dasan, like WOOSU, SIMUI, DAEDAE, MO, SORYUMHYO and DAERYUMHYO could also be found accordingly. The merits and characteristic in funeral rites are an obedience in filial duty, the pursuit of frugality. and the efficiency of practical functions. It could be said that the resurvey of DASAN′s theory on YEOMSEUP procedures is a meaningful work today when the original meaning of funeral rites fades out. Furthermore, discussions of refined burial service and encouraging cremation designed to improve land use, which are widely spread among people, could weaken the basic philosophy of YEOMSEUP and more likely propagate the atmosphere of despising the dignity of human beings.

• Journal of Microbiology and Biotechnology
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• v.26 no.3
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• pp.469-476
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• 2016

This study was undertaken to evaluate the immunomodulatory effect of dead nano-sized Lactobacillus plantarum (nLp) in RAW 264.7 cells and murine primary splenocytes. nLp is a dead, shrunken, processed form of L. plantarum nF1 isolated from kimchi (a traditional Korean fermented cabbage) and is less than 1 μm in size. It was found that nLp treatment stimulated nitric oxide (NO) production more in RAW 264.7 macrophages than pure live L. plantarum (pLp), and that the stimulatory properties were probably largely derived from its cell wall. In addition, nLp induced murine splenocyte proliferation more so than pLp; in particular, a high dose of nLp (1.0 × 10¹¹ CFU/ml) stimulated proliferation as much as lipopolysaccharide at 2 μg/ml. Moreover, according to our cytokine profile results in splenocytes, nLp treatment promoted Th1 (TNF-α, IL-12 p70) responses rather than Th2 (IL-4, IL-5) responses and also increased Th17 (IL-6, IL-17A) responses. Thus, nLp stimulated NO release in RAW 264.7 cells and induced splenocyte proliferation more so than pLp and stimulated Th1 and Th17 cytokine production. These findings suggested that dead nLp has potential use as a functional food ingredient to improve the immune response, and especially as a means of inducing Th1/Th17 immune responses.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.45 no.2
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• pp.167-172
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• 2012

Minerals from marine materials such as deep ocean water and Dead Sea water have been used since ancient times. We made a mask pack sheet including deep ocean water and salt from the Dead Sea and evaluated the function of the mask pack sheet through animal study. Three full-thickness skin defects were made on the backs of Sprague-Dawley rats. The wounds were left untreated in group Con, and mask pack sheets including deep ocean water or deep ocean water and Dead Sea water were used as treatment for 20 min on the skin of animals in groups DP and DDP, respectively. We analyzed the gross, histological and biochemical findings. Groups DDP and DP showed decreases in wound size, as compared to group Con at 7 days after wound infliction. The histological findings revealed that wound healing had progressed further in groups DP and DDP than in group Con, with more rapid collagen deposition and regression of neutrophils. Also, the expression of vascular endothelial growth factor and transforming growth factor ${\beta}1$ were increased in groups DDP and DP compared with those in group Con at 3 days after wound infliction. Mask sheet packs including deep ocean water and Dead Sea salt affected wound healing by reducing the inflammatory phase and stimulated wound contracture by facilitating the deposition of collagen.

• Membrane Journal
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• v.26 no.4
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• pp.266-272
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• 2016

The separation and purification of lysozyme enzyme from chicken egg white (CEW) solution was studied using the dead-end filtration. The optimum operation conditions of the dead-end filtration reveal that the maximum value of permselectivity of lysozyme to the other proteins of ovalbumin and conalbumin in the CEW solution was tested with change of molecular weight cut-off (MWCO) of ultrafitration membrane and pH of the CEW solution. The optimum operation conditions for the efficient permeable separation of lysozyme from the CEW solution are that the membrane MWCO is 30 kD and the pH of CEW solution is 11. At this optimum operation conditions, the maximum value of permselectivity of lysozyme to total proteins in CEW solution is about 83.