측백나무 잎의 정유성분 조사

임동균, 홍열, 임흥빈 충북대학교 연초연구소 2008 煙草硏究 Vol.21 No.-

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진공청소기 팬 모터의 진동 및 소음원인 분석을 위한 유동해석

김재열,곽이구,안재신,양동조,송경석,박기형 한국공작기계학회 2004 한국생산제조학회지 Vol.13 No.4

Recently technology resulted in highly efficient and multiple-functional electric appliances considering environmental problems. One of the environmental problems is noise of a product in respect to its function. A vacuum cleaner is an essential electric appliance in our daily lives. However, severe noise resulted from high motor speed for improving the function of the appliance is a nuisance for the user. This noise is caused by vibration from various parts of the appliance and fluid noise during a series of intake and exhaust processes while rotating the impeller connected to the axle at a high speed of the fan motor inside the vacuum cleaner rotating around 30,000-35,000rpm. Despite the fact that many researchers conducted studies on reducing the noise level of the fan motor in a vacuum cleaner, only few studies have been conducted considering both the theoretical and experimental aspects using fluid analysis by measuring vibration and noise. Moreover, there has not been a study that accurately compared major noise data obtained considering both of the aspects. In this study, both aspects were considered by considering the following experimental and theoretical methods to verify the major causes of noise from the fan motor in a vacuum cleaner.

적외선 열화상 카메라를 이용한 열적 결함부 자동 검출 모니터링 시스템 개발

김재열,양동조,한재호,유신,김창현,송경석 한국비파괴검사학회 2004 학술대회 논문집 Vol.- No.-

The most part of various electrics has been affected by thermal failure due to electric overload. Contact-sensor has been used, for detection to this thermal failure, until now. But, it is impossible to detect the unsuitable element by using contact-temperature-sensor. This problem, with development of the infrared thermal vision camera, will be solved. Because it take some advantages which are composed of non-contact detect and non-destructive detect for temperature distribution, it is possible to detect on the temperature of revolution part, high temperature part. We developed the automatic detection monitoring system for thermal failure part on electrics with overload by using the infrared thermal vision camera. The first stage, thermal signal was detected from the infrared thermal vision camera, and then the data that was wanted from user was shown. The second stage, if the temperature that was decided to failure coded to the program, automatically electrics was shut off. This monitoring system is possible to apply on various conveniences in the whole industrial sites.

빔 구조물의 손상평가를 위한 임피던스 기술의 응용

홍동표,홍용,왕고평,김병진,김영문,이재정,김재열 한국공작기계학회 2006 한국공작기계학회 추계학술대회논문집 Vol.2006 No.-

This paper presents a primary study for a new method of enhancing measurement using impedance analysis method, which is widely used for structure health monitoring. Many of skyscrapers, bridges, tunnels, which have been built up several years, and nearly reached their operating life due to aging crack, material deterioration, and so on. therefore, the health monitoring technique has obtained considerable attention. The goal of this research is to show basic information to evaluate structural health condition using piezoelectric sensors. The piezoelectric materials have various merits. It is easy to shape various forms and can be embedded on the materials more conveniently. Moreover, the excitation frequency can be changed and the piezoelectric sensors cost less. All these features make the piezoelectric-based system applicable to structural healthy monitoring. This work presents a study for the development of a practical and quantitative technique for assessment of the structural health condition by piezoelectric impedance-based technique associated with longitudinal wave propagation. To estimate the damage condition numerically, we suggest the evaluation method Cov (Covariance) and CC (Correlation Coefficient) in this paper.

적외선 열화상 카메라를 이용한 머시닝 센터 주축 열변위에 관한 열해석

김재열,윤성운,임노빈,유신,마상동,양동조,송인석 한국공작기계학회 2001 한국공작기계학회 춘계학술대회논문집 Vol.2001 No.-

Diagnosis or measurements using Infrared thermo-image hasn't been available. A quick diagnosis and thermal analysis can be possible when that kind of system is introduced to the investigation of each part. In this study, Infrared Camera, Thermo-vision 900 was used in order to investigate. Infrared Camera usually detects only Infrared wave from the light in order to illustrate the temperature distribution. Infrared diagnosis system can be applied to various field. Also, it is more effective to analyze temperature distribution on the machining center main-axis process.

3차원 레이저 진동측정기를 이용한 고속회전 모터의 진동특성 분석

김재열,김창현,송경석,양동조,곽이구,이창선 한국공작기계학회 2003 한국공작기계학회 춘계학술대회논문집 Vol.2003 No.-

Noise cause is dividing to fluid noise by exhaust flow of fan and vibration noise by rotational vibration of motor. Until now, measuring method has been used to measure vibration by the accelerometer, this method has been not measured for the vibration in some parts of brush and commutator because of motor construction. This research was purposed on the accurate analysis, using laser vibration analyzer, of noise cause against the difficult part in old times. By using this measured data, we would like to use for the design of silent motor.

군위지역 오이 시설 재배지의 토양특성 변화

이동훈,최충렬,김광섭,김평열,서정우,박만 경북대학교 농업과학기술연구소 2006 慶北大農學誌 Vol.24 No.-

군위군 오이재배지역을 정밀토양도를 이용하며 토양특성을 조사하구 군위군 노지 및 시설오이 재배지토양의 물리화학적 특성을 조사하여, 연작과 관행적인 토양관리로 인하여 저하된 토양의 이화학적 특성을 오이재배에 적합한 토양으로 개량하기 위한 기초자료로 이용하고자 토양조사를 실시하였다. 조사지역은 군위군 군위읍 외랑리 오이재배단지로서 주요토양통은 토양토에 나타난 단북통과 신정들이 가장 넓게 분포하였으며, 점토함량은 시설재배지내 토양의 경우 양토이었으며, 시설재배지의 외부 토양의 경우 23.8%로 높게 나타났다. 오이 재배지 토양의 화학적 특성 결과에 대한 오이재배지 토양의 적정범위와비교하여 보면 일반적인 화학적 성질에서 서는 유효인산의 함량이 적정범위보다 높은 것을 알 수 있으며, 치환성 양이온 함량은 시설재배지의 외부토양은 적정범위에 속하나 시설재배지 내부토양은 모두 높은 것으로 나타났으며, 최상부 토양은 매우 높으나 l0cm이하는 깊이에 따라 뚜렷한 차이는 없었다. 오이 재배지 토양 중 중금속 함량은 모두 기준치보다 높게 나타났는데, 구리의 함량이 시설재배지가 노지재배지보다 높게 나타났다. The soils of plastic film houses in which intensive cultivation takes place suffer from the serious problems such as severe salinity and accumulation of heavy metals etc. The objective of this research was to examine the change in soil properties with repeated cucumber cultivation under plastic film house at Gunwi-Gun area. The soils were classified mainly to Danbuk and SinJung series. Clay content is lower in the soils of plastic film house than in the field soil. Available P205 and exchangeable cations were accumulated at the level higher than the optimum range. The content of extractable heavy metals were higher in the soils of plastic film house than in those of the field. For optimum yield, much attention should be paied to the management of soils by the pre-soil survey.

한국어의 인칭범주 : 프랑스어 인칭체계와 비교연구 Etude compare´e avec le syste`me de la personne franc¸aise

박동열 한국 프랑스어문교육학회 2003 프랑스어문교육 Vol.15 No.-

La cate´gorie de la personne est indispensable dans l'acte de langage pour e^tre promue a` la dicibilite´. C'est a` dire que cette cate´gorie se pre´sente comme une condition fondamentale du langage et domine effectivement les syste`mes de l'espace et du temps. En franc¸ais, la personne locutive est elle-me^me analysable en terme d'espace et du temps. Dans ce rapport, sur le plan spatial, il proce`de d'une premie`re ope´ration de se´paration du Moi et du Hors-Moi. L'Hors-moi s'organise a` son tour selon le principe d'ite´rativite´, c'est-a`-dire qu'il se´pare toi de lui. Sur le plan temporel, le 'moi' devient 'je' et inclut le 'toi' qui devient 'tu', dans le rapport d'interlocution qui prend comme repe`re de temps l'instant de parole. C'est ainsi qu'on peut obtenir un syste`me de repre´sentation des personnes ranc¸aises et qu'on accorde la place aux le`re et 2e personne et celle accorde ´e a` la 3e personne. Par ailleurs, ce qu'on entend par la personne ne re´fe`re pas seulement a` une cate´gorie grammaticale purement formelle, mais aussi a` la pre ´sence humaine. Pour ainsi dire, la personne ne peut pas e^tre conside´re´e seulement au plan de l'e´nonce´, mais aussi au plan de l'e´nonciation. Le syste`me ordinal de la personne du franc¸aise a sa source dans un contrat associatif entre la personne de langage (la personne discours) et la personne de langue. En revanche, en core´en, on ne trouve non seulement pas de pronoms personnels intra-verbaux qui repre´senteraient le pocuteur et l'allocutaire, mais aussi les indicateurs core´eens correspondant au pronom personnel en franc¸ais, sont nombreux et diversifie´s l'extre^me. Cela veut dire que le core´en ne constitue pas en langue un syste`me ferme´, c'est-a`-dire, une repre´sentation de personne. Autrement dit, les personnes parlantes et e´coutantes ne s'inte´riorisent pas dans la langue. Mais, me^me si le core´en ne posse`de pas de personne de la langue, les e´nonce´s core´ens identifient la personne par le contexte et dans l'e´nonciation ou` la personne parlante est relativise´e par des conside´rations socio-culturelles ou socio-hie´rarchiques a` l'e´gard de la personne e´coutante. On peut trouver des traces d'ope´rations d'institutionnalisation des participants a` l'e´nonciation par, d'une part, des morphe`mes grammaticaux et par, d'autre part, certains types de pre´dicat qui sont lie´s aux instances e´nonciatives et impliquent des participants, sans marques explicites de de´termination re´fe´rentielle. Donc le core´en n'a pas de personne de la langue, mais la belle personne du discours.

메뉴분석 모형(Menu Engineering)에 의한 실증분석 : 광주광역시 M관광호텔 일식당을 중심으로

崔東烈 서강정보대학 1995 論文集 Vol.14 No.-

The restaurant in the tourist hotel is important so much that the amount of the restaurant occupies 30~50% in the amount of sale of the hotel. One of the point of success or failure of restaurant management is just menu management. An effective menu management is needed menu analysis. Therefore, I recognized that various method of menu analysis is needed and I started this study. Especially, I decided that Kwangju circle hotel as the subject of actual analysis because the amount of sale of the restaurant is given much weight more and more toward locality and in order to help scintillation of menu management in Kwangju circle hotel. But I could not obtain the low data for the purpose of menu analysis So, the subject of M Hotel in Kwangju circle, the second quarter in 1995. The result of menu engineering analysis in the case of the Japanese restaurant of M Hotel in Kwangju circle is as follows. Firstly, It is exposed that Star class menus having guest's high state of preference and high state of contribution margin are 'Assorted Sashimi' and 'Special Assorted Sashimi'. These menus are needed quality control in order to maintain their popularity. Secondly, It is exposed that Plow horse class menus having guest's high state of preference and below the average state of contribution margin are 'Assorted Sushi', 'Boiled Hot Pepper & Red Snapper & Vegetables dish', 'Maku No Uchi(Luncheon Box)', 'Special Assorted Sushi', 'Tuna Roll Sushi', 'Assorted Hand Roll', 'Sashimi on Rice', 'Cod Fish & Vegetables Boiled Dish'. These menus of this group are needed effort in order to raise state of contribution margin through raise of the food charge and an apt cost control. Thirdly, It is exposed that puzzle class menus are 'Japanese Full Course' and 'Thin Sliced Sashimi'. These menus have high state of contribution margin but have customer's low state of preference. Therefore these menus should be performed diversified strategy of sales promotion. Fourth, except 12 kinds of menus, 33 kinds of menus among 45 kinds of food menus of the Japanese restaurant in M Hotel are classified as Dog class. That is, dog class menu which is not particularly chosen by customer and has poor contribution margin charges 73.3% in the whole menu of the Japanese restaurant. 15 kinds of menus among them were not sold a single dish during 3months, the period of investigation subject. 15 kinds of menus among dog class menu were not sold a single dish should be excluded boldly, and the rest of them are needed diversified policy of menu management changing into puzzle class or Plow horse class. Lastly, according to my observation about Kwangju circle hotel, menu management of restaurant in Kwangju circle hotel is the lowest level. It should be introduced scientific and synthetic method of menu analysis.

地方 호텔 外來客(Foreign Tourist) 增大方案 : 光州圈 호텔 客室 投宿客을 中心으로

崔東烈 서강전문대학 1993 論文集 Vol.12 No.-

In these days of localization, local hotel should be reborn as a hotel contributing to community development. Firstly, local hotel should be familiar with local residents, secondly, local hotel must not conduct unwholesome business what local residents dislike, thirdly, local hotel should plan inflow of outward capital in order to contribute to community development. But, foreign hotel room occupancy rate by city of tourist hotel in Kwangju area is the lowest all over the country. In order to increase foreign hotel room occupancy, hotels in Kwangju area should adopt following devices. Hotel top managements in Kwangju area should change their way of thinking. They should abandon the thinking of having only to make money, and they should have will that they shall participate in community development. One of these methods is concerning about attracting foreign tourists. Much investigation is needed to attract foreign tourist. If top managements don't change their way of thinking, it cannot be even conceived the idea of doing. The next is advance of sales & promotion activity. According to a statistics, the low foreign hotel occupancy rate is due to the lack of sales & promotion and public relations. Hotels in Kwangju area do not operate sales & promotion activity for increasing foreign tourists. About all, hotels in Kwangju area should solidify sales & promotion activity to increase foreign tourists. And hotels must get fully prepared for accommodating foreign guests. Hotels should increase materials for public relations written in foreign languages, possess tourism information system and expand available convenient facilities for foreigners. If hotels indifferent to foreigners because few foreigners visit, in that case, a casual foreign visitor shall be missed. To promote the quality of reception a guest and service, it is needed strengthening service education training and foreign language conversation against employees. If employees are diffident of foreign language, they cannot serve smoothly. Therefore, preferentially, employees should train foreign language to the degree of not having inconveience in serving guests. In order to attract a group tourist, it is needed a commodity development of Package tour, Incentive tour, etc. It is important to utilize existing resources rather than develop goods artificially. Kwangju area has many possible objects in making tourism resource, nevertheless it has not been developed. Lastly, cooperation system with local residents, a self-governing body and organizations concerned with improvement of attracting foreign tourist should be constructed. Foreign tourists are not attracted by a man's endeavor. So we should convert our cognition about tourism industry, realize as soon as possible the importance of income by tourism industry and make circumstance for local residents in coorperation to drive.