• 제목/요약/키워드: Car-following

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IT기반 커뮤니케이션 요인이 서비스재이용의도에 미치는 영향분석 : 정비서비스를 중심으로 (The Analysis of Impact of IT-Based Communication Level on Customer's Intention of Service Reuse : Auto Repair Service)

  • 한복우;김철수
    • 한국IT서비스학회지
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    • 제13권3호
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    • pp.333-342
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    • 2014
  • As for the dimensions of service quality, reliability, responsiveness, assurance, empathy, and tangibles are the main factors that determine the company's service quality. To improve quality of service, companies emphasize the balance among the dimensions of service quality. These emphases improve definitely customer satisfaction and intention of reusing service, while communication at customer encounters give direct affects in customer satisfaction and intention of reusing service. This study shows how communications at customer encounters affect intention of reusing service and be affected by the dimensions of service quality. It especially analyzes how IT-based communications, one of physical one, such as phones, emails, messengers, and SNSs affect and be affected. In addition, it analyzes car repair service. This research uses a factor of communications at service encounter as for intermediate parameter and analyzes how it relates to dimensions of service quality and intention of reusing service. With following research model, it will analyze how IT-based communication affects intention of reusing service and be also affected by dimensions of service quality.

Identifiaction and Molecular Size of Zine-Binding Ligands in Pancreatic/Biliary Fluid of Rats

  • Kwun, In-Sook;Donald Oberleas
    • Preventive Nutrition and Food Science
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    • 제2권1호
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    • pp.42-48
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    • 1997
  • the exocrine pancreatic secretion is an important factor in the maintenance of zinc homeostasis. The daily pancreatic secretion of zinc into the gastrointestinal tract may be two or more times the daily dietary zinc intake. The objective of this study was to examine the distribution of proteins and zinc in pancreatic/biliary fluid following intraperitoneal {TEX}${65}^Zn${/TEX} injection into dietary prepared Sprague-Dawly rats. Distribution of zinc-binding protein in Sephadex G-75 subfractions showed a peak corresponding to the high molecular weight protein standard(<66kDa) in the pancreatic/biliary fluid. Zinc also was associated with the 29~35kDa mole-cular weight proteins. These are similar in size with zinc-containing enzymes, carboxypeptidase A and car-boxypeptidase B. A more remarkable small molecular weight fraction eluted beyond the 6.5kDa standard pro-tein peak. These results show the presence of small molecular weight compound in pancreatic/biliary fluid associated with zinc . These small molecular weight compounds may serve as zinc-binding ligands for the secretion of enogenous zinc into the duodenum. These findings suggest that these lignads may dissociate zinc in the duodenum thus making it vulnerable to complexation with phytate in the upper gastrointestinal tract rendering the zinc unavailable for reabsorption.

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Road Aware Information Sharing in VANETs

  • Song, Wang-Cheol;Rehman, Shafqat Ur;Awan, Muhammad Bilal
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제9권9호
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    • pp.3377-3395
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    • 2015
  • Recently, several approaches to share road conditions and/or digital contents through VANETs have been proposed, and such approaches have generally considered the radial distance from the information source as well as the TTL to provision an ephemeral, geographically-limited information sharing service. However, they implement general MANETs and have not been tailored to the constrained movement of vehicles on roads that are mostly linear. In this paper, we propose a novel application-level mechanism that can be used to share road conditions, including accidents, detours and congestion, through a VANET. We assign probabilities to roads around each of the intersections in the neighborhood road network. We then use the graph representation of the road network to build a spanning tree of roads with the information source as the root node. Nodes below the root represent junctions, and the edges represent inter-connecting road segments. Messages propagate along the branches of the tree, and as the information propagates down the branches, the probability of replication decreases. The information is replicated until a threshold probability has been reached, and our method also ensures that messages are not delivered to irrelevant vehicles, independently of their proximity to the source. We evaluated the success rate and performance of this approach using NS-3 simulations, and we used IDM car following and MOBIL lane change models to provide realistic modeling of the vehicle mobility.

젊은 남자 환자에서 발생한 자발적 비장 파열: 증례보고 (Spontaneous Normal Splenic Rupture: A Case Report)

  • 이성배;최영일
    • Journal of Trauma and Injury
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    • 제27권4호
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    • pp.208-210
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    • 2014
  • Rupture of the spleen is relatively common, both immediately and in a delayed fashion following significant blunt abdominal trauma. However, atraumatic splenic rupture rarely occurs. Multiple underlying pathologies have been associated with splenic rupture without trauma, including hematological, neoplastic, inflammatory and infectious conditions. In our case, a 21-year-old male without prior medical history visited the hospital with left upper quadrant abdominal pain that had started one day earlier. He had no history of trauma. An abdominal computed tomography (CT) scan found a collection of perisplenic fluid, accompanying a splenic rupture. Due to the patient's stable vital signs and lack of clinical progression of hemorrhage, he underwent conservative treatment. The patient was discharged at day 14 without complication. Rupture of a normal spleen without a history of trauma is not often reported, and it has long been a subject of debate. Ruptures of normal spleen almost always follow some kind of trauma, such as a car accidents or a fall from significant heights. Here, we report a case of spontaneous rupture of a normal spleen in the absence of other medical pathologies or triggering factors.

Design of Integrated Database for CRM in Automobile Maintenance Industry

  • Jung, Lee-Sang;Jung, Dae-Hyun
    • 한국컴퓨터정보학회논문지
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    • 제23권5호
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    • pp.55-63
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    • 2018
  • In this paper, we designed a system that integrate and organize customer management programs and databases, which are performed independently of each other. And we designed the system so that it can be used for future marketing by implementing the system to share and efficiently utilize mutual independent maintenance information. From the CRM perspective, a comprehensive information system ghat manages every information on both new cars and second hand cares grom their purchase, to parts, to insurance, and to scraping needs to be established. The following should be applied in the establishment of the IAMS. Auto makers or auto maintenance services providers exclusive management of information on customers and their car maintenance services is aggravating the customer's inconvenience and complaints. In addition, the service provider has difficulty providing consistent maintenance services because it has little information about previous auto maintenance services the customer received. Besides, the customers who have no information on costs of parts and labor tend to hesitate to trust the costs of maintenance services. This study to provide customers with systematic maintenance service and causing them some inconvenience. Therefore, in order to maintain existing customers, auto maintenance service providers should provide services the customers wanted on the basis of accurate information about them.

차량 주행에 따른 콘크리트용 바닥 마감재의 마모저항성 평가방법 (An experimental study on the evaluation of abrasion resistance for concrete surface coating materials by cruising vehicle)

  • 최은수;김영근;서상교
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2008년도 춘계 학술발표회 제20권1호
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    • pp.849-852
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    • 2008
  • 주차장의 열화조건 중 가장 보편적으로 나타나는 코너 부위의 열화요인을 실험적으로 재현하여 바닥재의 성능을 비교 평가하여 바닥재의 신뢰성을 확보하기 위하여, 윤하중 시험을 실시하고 있다. 하지만 윤하중 시험의 시험 조건별 시험결과가 상이하여, 보다 명확한 시험조건의 설정이 필요하다. 이에 본 연구에서는 2가지 조건의 윤하중 시험을 실시하여, 보다 실제상황과 유사한 시험조건을 찾고자 한다. 1. 공통조건 - 실제 자동차 타이어에 300㎏의 하중을 가하여, 5㎞/h의 속도로 80,000 회전 시킨 후 마모도를 평가 2. 조건(A) - 별도의 (열화)조건을 주지 않고 마모도를 평가 3. 조건(B) - 30회마다 1회씩 1.0g의 표준사를 1m 높이에서 낙하

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Synthesis of Forsterite with High Q and Near Zero TCf for Microwave/Millimeterwave Dielectrics

  • Ohsato, Hitoshi;Ando, Minato;Tsunooka, Tsutomu
    • 한국세라믹학회지
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    • 제44권11호
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    • pp.597-606
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    • 2007
  • With the advent of ubiquitous age, the high quality dielectric materials have been required for the wireless communications available to the millimeterwave as well as microwave frequencies. The utilizable region for the frequency has been expanding to the millimeter-wave region because of the shortage of radio frequency (RF) resources. These high frequencies would be expected for ultra high speed LAN, ETS and car anti-collision system on the intelligent transport system (ITS) and so on. Silicates are good candidates for microwave/millimeterwave dielectrics, because of their low dielectric constant ${\epsilon}_r$ and high quality factor (High Q). Forsterite ($Mg_2SiO_4$) is one of the silicates with low ${\epsilon}_r$ of 6.8 and Q f of 240000 GHz. In this paper, we reviewed following three categories for synthesis of forsterite: (1) Synthesis of high Q forsterite (2) Adjust the temperature coefficient of resonant frequency $TC_f$ (3) Diffusion of $SiO_{4^-}$ and Mg-ions on the formation of forsterite.

고장력 소재로 롤-포밍 공법에 의한 자동차 도어 사이드 임팩트 빔 개발 (Development of Vehicle Door Side Impact Beam with High Tensile Steel using Roll Forming Process)

  • 손희진;김성육;오범석;김기선
    • 한국기계가공학회지
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    • 제11권6호
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    • pp.82-87
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    • 2012
  • The purpose of this study is to produce a side impact beam with high tensile steel using a roll forming process. The door side impact beam plays an important roll in a car because it protects passengers from external crash. The roll forming process is a continuous bending process wherein a long metal sheet is bended as it continuously passes several rolls. The characteristic of this study is that an impact beam is produced by a continuous process using a ultra high strength steel without a hardening heat treatment. A model was determined by analysing plasticity of a cross section shape considering high strength. Design parameters of the impact beam was determined by crash-analysing the model. Workpiece products were manufactured by designing dies for roll forming and setting them up in a following process line. Results of a bending test and a FEM analysis was considered and reviewed.

AC8A-T6 알루미늄 합금재의 절삭가공 특성에 관한 연구 (A Study on the Characteristics of Machining for AC8A-T6 Aluminum Alloy)

  • 최현민;김경우;김우순;김용환;김동현;채왕석
    • 한국공작기계학회:학술대회논문집
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    • 한국공작기계학회 2002년도 추계학술대회 논문집
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    • pp.192-197
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    • 2002
  • In this study, examined the cutting characteristics of alumuminum alloy AC8A-T6 that is used to present car piston materials. And in been holding materials machining empirically escape as result that experiment comparison changing the cutting speed and feed on various condition to choose efficient machining condition. The following results can be summarized from this research. 1. As the cutting speed decreased, principal cutting force and thrust cutting force is increased, and reason that cutting force interacts greatly in the low cutting speed is thought by result by BUE's stabilization. 2. The feed speed and cutting speed increase, friction factor is decrescent and the cause appeared the thrust cutting force is fallen than cutting force relatively because chip flow according to increase of the feed rate is constraint. 3. Though specific cutting resistance grows cutting area and the feed rate are few, the cause was expose that shear angle decreases by rake face of tool gets into negative angle remarkably as wear of a cutting tool or defect part of workpiece is cut. 4. Cutting speed do greatly depth of cut is slow, surface roughness examined closely through an experiment that becomes bad, and know that it can get good surface that process cutting speed because do feed rate by 0.1mm/rev low more than 250m/min to get good surface roughness can.

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Carrageenan as a Rheology Agent for Mild Cleansing Applications.

  • Lynch, Gerard
    • 대한화장품학회:학술대회논문집
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    • 대한화장품학회 2003년도 IFSCC Conference Proceeding Book II
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    • pp.369-369
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    • 2003
  • Viscarin is a tradename given to viscosifying carrageenans manufactured by FMC BioPolymer. The suitability of Vis car ins as rheology agents in mild cleansing applications has been investigated. Rheological properties, foam volume and clarity were measured to determine the impact of including 1 % Viscarin on 10% solutions of the following surfactants: acylglutamate, cocoamidopropyl betaine, PEG-80 laurate, sodium lauryl sulphate and sodium lauryol sarcosinate. Viscosity, pseudoplasticity and thixotropy of Viscarin/surfactant solutions varied with surfactant type. In all cases, the addition of Viscarin substantially increased viscosity. For example, at a shear rate of 1 sol, all surfactant solutions had viscosities <0.1 Pa s while viscosities of Viscarin/surfactant solutions ranged from 10 to 60 Pa s. By comparison, a solution of 1 % Viscarin had a viscosity of 0.3 Pa s. Clarity of surfactant solutions decreased in all cases on the addition of Viscarin. However, it was found that by including a mild solubilizing surfactant, such as PEG 40 hydrogenated castor oil, crystal clarity could be maintained in Viscarin/surfactant solutions. Viscarin increased the foam volume of sodium lauryolsarcosinate solutions from 10 ml to 220 ml and had no impact on the foam volume of the other surfactants tested. These results were used to formulate a clear, ultra-mild foaming cleansing gel based on sodium lauryol sarcosinate and Viscarin without the need for a secondary, foam-boasting surfactant. A mild shampoo was also formulated. Both products have excellent skin-feel and are capable of suspending bubbles and solid inclusions.

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