• Asian-Australasian Journal of Animal Sciences
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• 제12권4호
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• pp.511-514
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• 1999

Data pertaining to 1111 first lactation performance record of Karan Fries (Holstein-Friesian $\times$ Zebu) cows spread over a period of 21 years and sired by 72 bulls were used to examine the efficiency of sire indices for lactation milk production using auxiliary traits. First lactation length, first service period, first calving interval, first dry period and age at first calving were considered as auxiliary traits. The efficiency of this method was compared with simple daughter average index (D), contemporary comparison method (CC), least-square method (LSQ), simplified regressed least-squares method (SRLS) and best linear unbiased prediction (BLUP) for lactation milk production. The relative efficiency of sire evaluation methods using one auxiliary trait was lower (24.2-32.8%) in comparison to CC method, the most efficient method observed in this study. Use of two auxiliary traits at a time did not further improve the efficiency. The auxiliary sire indices discriminate better among bulls as the range of breeding values were higher in these methods in comparison to conventional sire evaluation methods. The rank correlation between breeding values estimated using auxiliary traits were high (0.77-0.78) with CC method. The rank correlation among auxiliary sire indices ranged from 0.98 to 0.99, indicating similar ranking of sire for breeding values of milk production in all the auxiliary sire indices.

• 응용통계연구
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• 제20권2호
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• pp.333-343
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• 2007

고객의 도착간격시간과 서비스시간 중 어느 하나가 지수분포가 아닌 큐를 분석할 때 중요하게 등장하는 함수가 보조재생함수(auxiliar renewal function)이다. 재생함수와 마찬가지로 보조재생함수도 이론적으로는 정의할 수 있으나 함수값을 실제로 계산하기에는 어려움이 많아 근사값을 구하는 연구가 필요하다. 본 논문에서는 보조재생함수의 값을 근사적으로 계산하는 두 가지 방법을 보여주고 부분적으로 알려져 있는 보조재생 함수의 참값과의 비교를 통하여 두 방법을 서로 비교한다.

• 전기학회논문지P
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• 제66권4호
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• pp.177-181
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• 2017

Auxiliary power supply for railway vehicle is a equipment that focuses on the service of passengers in a vehicle. It supplies power to controllers used in heating and cooling devices, fluorescent lamps, batteries and many other electrical equipments. Most of the auxiliary power supply for railway vehicle are mainly used for the round trips and circulation routes within the metropolitan area and have a capacity of 170~200 kVA. In this study, we developed the auxiliary power supply capacity to 240kVA for 200km/h class. As such, the auxiliary power supply is an important device for securing the reliability and safety of the railway vehicle and improving the passenger convenience, so the performance verification of the performance must be ensured. In this paper, 240kVA auxiliary power supply is developed. Also, performance of the auxiliary power supply manufactured through the analysis of various characteristics related to the auxiliary power supply was confirmed while operating the actual line.

• 무역상무연구
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• 제47권
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• pp.185-212
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• 2010

This study aims to derive practical suggestions to apply application methods by auxiliary costs, especially application of logistics and customs clearance areas in order to establish EPS support system of auxiliary cost occurred from export/import. For the propose, this study has analyzed types and situation of auxiliary costs, application method by auxiliary costs, payment situation of logistics auxiliary costs and clearance auxiliary costs and suggested the relevant problems and their application methods. Especially, in case of logistics auxiliary costs through connection to the attached general documents required for negotiation by reflecting characteristics of B2B transactions. In addition, it has suggested that those services by the said system should be conveniently used commonly by the export companies and logistics companies through provision of various payment measures, support of foreign currency payment, etc. and security of reliability/system stability, etc. for the compatible payment with other systems as the prerequisite for the successful settlement of the auxiliary costs EPS. It is expected that satisfaction of the uTradeHub users such as export/import companies and logistics companies will be increased, user-oriented customized information services such as raw cost prediction service through calculation of auxiliary costs could be available in the future and efficiency of work processes related to auxiliary costs will be increased, by providing the EPS through various single window based payment measures through establishment of the export/import auxiliary costs payment system.

• 한국치위생학회지
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• 제8권3호
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• pp.37-52
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• 2008

본 연구는 서비스 종사자들의 구강위생보조용품의 사용 실태를 조사하기 위해 서울시 S생명사와 L백화점에 종사하는 서비스군 200명과 사무직에 종사하는 비서비스군 200명을 대상으로 칫솔질 습관, 구강위생보조용품의 사용행태 및 만족도 등에 관한 면접설문조사를 실시하여 비교한 결과 다음과 같은 결론을 얻었다. 1. 서비스군의 양치 횟수는 하루 3~4회(53.4%)가, 양치방법은 위 아래로 닦는 방법(50.8%)이 가장 많았으며, 양치 시기는 식후 5분 후(45.0%)가 하는 경우가, 칫솔 교환 시기는 모양을 보고 교환하는 경우(56.6%)가 가장 많았다. 2. 서비스군은 비서비스군에 비해 구강위생보조용품을 많이 사용하고 있었고 그 사용 빈도는 이쑤시개(30.9%), 구강양치용액(29.9%), 치실(13.5%), 혀닦이(10.1%) 순이었으며 그 외의 구강위생보조용품의 사용 빈도는 매우 낮았다. 3. 각 구강위생보조용품 별로 두 군 간의 사용현황을 비교해 보면, 서비스군은 치실(66.1%),의 사용이 비서비스군(33.9%)에 비해 더 많았고, 혀닦이(64.4%), 역시 비서비스군(33.3%)보다 더 많이 사용하고 있었으며, 구강양치용액에서도 서비스군이 (64.43%) 비서비스군에(35.6%) 비해 더 많이 사용하고 있는 것으로 나타났다. 반면 이쑤시개에 있어서는 비서비스군(54.6%)이 서비스군(45.4%)에 비해 더 많이 사용하고 있는 것으로 나타났다 4. 서비스 종사자들의 구강위생보조용품의 사용동기는 치과에서 권유하여 사용하는 경우(53.6%)가 가장 많았고, 구강위생보조용품을 사용하지 않는 이유는 사용하기 불편하거나(45.4%), 사용하는 방법을 잘 모르기 때문(21.60%)이 가장 많은 것으로 조사되었다. 5. 구강위생보조용품의 인지도에 따른 사용률을 조사한 결과 이쑤시개를 제외한 대부분의 구강위생보조용품에서 서비스군이 비서비스군보다 높은 이용률을 보였으며 특히 구강양치용액(54.8%), 혀닦이(43.3%) 치실(35.8%) 등에서 다소 높은 사용률을 보였다. 6. 서비스군(54.9%)은 비서비스군(45.1%)에 비해 정기검진을 더 많이 받고 있었으며, 정기검진의 기간에 있어서 1년마다 시행하는 경우가(43.5%) 가장 많았다. 조사결과 서비스 종사자들은 비서비스종사자들에 비해 구강위생활동을 더 활발히 하고 있는 것으로 나타났으며, 관심 또한 많은 것으로 조사되었다. 그러나 일부 구강위생보조용품만을 사용하고 그 외의 구강위생보조용품의 사용은 매우 저조한 것으로 나타났으며, 구강위생보조용품을 사용함에 불편감을 갖고 있었다. 이에 따라 향후 구강위생보조용품의 지속적인 적극적인 홍보가 매우 필요하고, 다양한 교육매체를 이용하여 구강상태에 따라 다양한 구강위생보조용품을 사용할 수 있도록 전문가 교육 및 프로그램 개발이 시급하다. 아울러 보다 편리하게 사용할 수 있는 구강위생보조용품을 개발하고 손쉽게 접근할 수 있도록 판매처를 증가시키고 보급하는 것 또한 필요하다고 사료된다. 본 연구는 몇 가지 점에서 한계를 가지고 있었다. 첫째, 서비스 종사자들 일부만을 대상으로 하여 서비스 종사자들을 모두 대표하기 어렵다는 점이다. 둘째, 구강위생보조용품 사용률은 평가하였으나 사용능력은 평가하지 못했다는 점이다. 즉, 구강위생용품을 정확하게 사용할 수 있는 능력 또한 사용률 못지않게 중요하나 이를 조사하지 못했다. 셋째, 인지도에 따른 사용현황은 조사하였으나 구강건강 상태와 관련하여 사용실태를 파악하지 못했다는 점이다. 따라서 향후 보다 더 실용적인 자료가 되기 위해, 앞선 한계를 보완한 조사도구가 개발되어 보다 광범위한 연구가 필요하다고 사료된다.

• 경영과학
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• 제31권2호
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• pp.87-103
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• 2014

This study looks for the service factors influencing to conversion among the domestic telecommunication companies and finds out the effect which the switching benefit affect the customer satisfaction and the switching intention. Eight service factors of the telecommunication company such as usability, call quality, terminal quality, auxiliary service, rates, after service, application and brand image are selected and verified using the structural equation model. Auxiliary service, rates and brand image give positive (+) effects to the customer's satisfaction, but the application gives negative (-) effects to the customer's satisfaction. Switching benefit affects significantly to the switching intention, but not to the customer satisfaction. The customer satisfaction gives a positive effect to the switching intention. The telecommunication service factors influence to customer satisfaction and switching intention, and switching benefit also influences to switching intention. It was analyzed that the significant influencing service factors were a little different among the telecommunication companies.

• ETRI Journal
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• 제44권2호
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• pp.208-219
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• 2022

Crime amount prediction is crucial for optimizing the police patrols' arrangement in each region of a city. First, we analyzed spatiotemporal correlations of the crime data and the relationships between crime and related auxiliary data, including points-of-interest (POI), public service complaints, and demographics. Then, we proposed a crime amount prediction model based on 2D convolution and long short-term memory neural network (2DCONV-LSTM). The proposed model captures the spatiotemporal correlations in the crime data, and the crime-related auxiliary data are used to enhance the regional spatial features. Extensive experiments on real-world datasets are conducted. Results demonstrated that capturing both temporal and spatial correlations in crime data and using auxiliary data to extract regional spatial features improve the prediction performance. In the best case scenario, the proposed model reduces the prediction error by at least 17.8% and 8.2% compared with support vector regression (SVR) and LSTM, respectively. Moreover, excessive auxiliary data reduce model performance because of the presence of redundant information.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2000년도 추계학술발표논문집 (하)
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• pp.1051-1054
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• 2000

IMT-2000 moving picture messaging service is a primary auxiliary connection service that allows a caller to leave a message when the caller can not complete the call. As the number of service subscriber for wireless communication is dramatically increased, various wireless services as well as simple connection service are requried IMT-2000 moving picture messaging service increases the call completion rate and makes it possible to provide various services.

• 한국철도학회:학술대회논문집
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• 한국철도학회 1999년도 추계학술대회 논문집
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• pp.267-272
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• 1999

The auxiliary power supply system fur passenger service of railway car has been developed from MA(Motor-Alternator) to CVCF Inverter (Static Inverter). Generally, a customer wants to apply tile new control method and device for auxiliary power supply of railcar However, if the auxiliary power supply is supplied to extended existing line, the maintenance cost of the old system is less expensive than new developed system, so, the customer specifies that the auxiliary power supply has compatibility with existing one completely. At that time, the hardware is nearly same as existing system except small changes of accessories for better performance. This paper describes the flicker control using feed-forward method of auxiliary power supply system for new 50 electric railcars, which are delivered to Korean National Railroad (KNR) Kwa-chon Line. The existing power supply system has damping resistor box to stabilize the DC input (1.5 ㎸). At this time, for better system efficiency the new system has not include resistor box but new control method including feed-forward control is applied. This control algorithm realizes the better stabilization of input power compared to the result of the existing system, which includes resistor box

• 전기학회논문지
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• 제64권12호
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• pp.1810-1817
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• 2015

The railway vehicle has an auxiliary power unit for supplying power to the associated electronic control devices and passenger service unit. Typically, input voltage from the catenary for rolling stock is highly fluctuating according to the substation capacity, vehicle propulsion and regeneration. Especially, the frost and freezing on contact wire in winter can cause a blackout inside vehicle, and also brings about electronic components damaging and the system down. To prevent this problem, a large filter and capacitor is used. But this is not a perfect solution, because it is increasing weight of the unit. In this paper, a new algorithm is proposed to suppress the disturbance without adding devices. Simulation and experimental results show that the proposed algorithm has performance to suppress the disturbance at the sudden input voltage variations.