차량정보단말기를 통한 광고가 운전자에 미치는 영향

김태승(Taeseung Kim),우진명(Jinmyung Woo),김문식(Moonsik Kim),류시복(Sibok Yu),이수영(Sooyoung Lee) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2007 No.11

차량 내 디스플레이 장치를 이용한 광고의 효용성 평가

김태승(Taeseung Kim),우진명(Jinmyung Woo),김문식(Moonsik Kim),류시복(Sibok Yu),이수영(Sooyoung Lee) 한국자동차공학회 2007 한국자동차공학회 Symposium Vol.- No.-

Recently products based on in-vehicle display(ex, vehicle navigation, telematics service, DMB, etc.)rapidly expand in market. because of driver for vehicle IT product increase supplying in the demand. Bacause the policy has been focused on limiting the commercial advertisement which has been always core interest of companies, the study on actual driver distraction and efficiency of advertisement has been also limited. Assuming that the commercial advertisement using in-vehicle display system can be allowed in the near future, as a base study for safety and efficiency, a set of experiments with various advertising text was conducted using the vehicle simulator system in KATECH(Korea Automotive Technology Institute). According to it distinguishes to method of efficiency advertisement a plan, in-vehicle will be used to total studying advertisement safety and approval in based on fundermental data.

지하수 중 탄소원으로 fumarate 주입과 유전자분석을 통한 질산성질소 자연저감도 평가

박선화,김현구,김소현,이민경,이경미,김영,김문수,김태승,Park, Sunhwa,Kim, Hyun-Gu,Kim, Sohyun,Lee, Min-Kyeong,Lee, Gyeong-Mi,Kim, Young,Kim, Moon-Su,Kim, Taeseung 한국지하수토양환경학회 2014 지하수토양환경 Vol.19 No.4

In the results of monitoring nitrate concentration in more than 8,000 groundwater wells around agro-livestock, the average and maximum nitrate concentration was 9.4 mg/L and 101.2 mg/L, respectively. Since about 31% of the monitoring wells was exceed the quality standard for drinking water, nitrate control such as remediation or source regulation is required to conserve safe-groundwater in South Korea. Typical nitrate-treatment technologies include ion exchange, reverse osmosis, and biological denitrification. Among the treatment methods, biological denitrification by indigenous microorganism has environmental and economic advantages for the complete elimination of nitrate because of lower operating costs compared to other methods. Major mechanism of the process is microbial reduction of nitrate to nitrite and nitrogen gas. Three functional genes (nosZ, nirK, nirS) that encode for the enzyme involved in the pathway. In this work, we tried to develop simple process to determine possibility of natural denitrification reaction by monitoring the functional gene. For the work, the functional genes in nitrate-contaminated groundwater were monitored by using PCR with specific target primers. In the result, functional genes (nosZ and nirK) encoding denitrification enzymes were detected in the groundwater samples. This method can help to determine the possibility of natural-nitrate degradation in target groundwater wells without multiplex experimental process. In addition, for field-remediation application we selected nitrate-contaminated site where 200~600 mg/L of nitrate is continuously detected. To determine the possibility of nitrate-degradation by stimulated-natural attenuation, groundwater was sampled in two different wells of the site and nitrate concentration of the samples was 300 mg/L and 616 mg/L, respectively. Fumarate for different C/N ratio was added into microcosm bottles containing the groundwater to examine denitrification rate depending on carbon concentration. In the result, once 1.5 times more than amount of fumarate stoichiometry required was added, the 616 mg/L of nitrate and 300 mg/L of nitrate were completely degraded in 8 days and 30 days. The nitrite, byproduct of denitrification process, was also completely degraded during the experimental period.

연속흐름반응조에서 바이오필름형태의 탈염소화 미생물에 의한 TCE분해 모니터링

박선화,한경진,홍의전,안홍일,김남희,김현구,김태승,김영,Park, Sunhwa,Han, Kyungjin,Hong, Uijeon,Ahn, Hongil,Kim, Namhee,Kim, Hyunkoo,Kim, Taeseung,Kim, Young 한국지하수토양환경학회 2012 지하수토양환경 Vol.17 No.5

A 1.28 L-batch reactor and continuous-flow stirred tank reactor (CFSTR) fed with formate and trichloroethene (TCE) were operated for 120 days and 56 days, respectively, to study the effect of formate as electron donor on anaerobic reductive dechlorination (ARD) of TCE to cis-1,2-dichloroethylene (c-DCE), vinyl chloride (VC), and ethylene (ETH). In batch reactor, injected 60 ${\mu}mol$ TCE was completely degraded in the presence of 20% hydrogen gas ($H_2$) in less than 8 days by anaerobic dechlorination mixed-culture (300 mg-soluble protein), Evanite Culture with ability to completely degrade tetrachloroethene (PCE) and -TCE to ETH under anaerobic conditions. Once the formate was used as electron donor instead of hydrogen gas in batch or chemostat system, the TCE-dechlorination rate decreased and acetate production rate increased. It indicates that the concentration of hydrogen produced in both systems is possibly more close to threshold for homoacetogenesis process. Soluble protein concentration of Evanite culture during the batch test increased from 300 mg to 688 mg for 120 days. Through the protein monitoring, we confirmed an increase of microbial population during the reactor operation. In CFSTR test, TCE was fed continuously at 9.9 ppm (75.38 ${\mu}mol/L$) and the influent formate feed concentration increased stepwise from 1.3 mmol/L to 14.3 mmol/L. Injected TCE was accumulated at 18 days of HRT, but TCE was completely degraded at 36 days of HRT without accumulation of the injected-TCE during the left of experiment period, getting $H_2$ from fermentative hydrogen production of injected formate. Although c-DCE was also accumulated for 23 days after beginning of CFSTR operation, it reached steady-state in the presence of excessive formate. We also evaluated microbial dynamic of the culture at different chemical state in the reactor by DGGE (denaturing gradient gel electrophoresis).

울산 울주지역 소규모 수도시설 지하수의 수리지화학적 특성 연구

김동수,김문수,조성진,김익현,이헌민,황종연,박선화,조훈제,김태승,김현구,Kim, Dongsoo,Kim, MoonSu,Jo, Sungjin,Kim, Ikhyun,Lee, Heonmin,Hwang, Jongyoen,Park, Sunhwa,Jo, Hunje,Kim, Taeseung,Kim, Hyunkoo 한국지하수토양환경학회 2017 지하수토양환경 Vol.22 No.5

The hydrogeochemical characteristics of groundwater in the small waterworks are examined with 81 groundwater samples in Ulju region, Ulsan. The pH ranged in 6.3-8.2 and did not exceed the drinking water standards. Electrical conductivity ranged from $50{\mu}S/cm$ to $1,719{\mu}S/cm$. It indicated that the electrical conductivities in groundwaters at the study area are relatively low, compared with other groundwaters in Ulsan area. The calcium concentrations in groundwaters ranged from 3.55 to 113.01 mg/L, and sodium concentrations ranged from 2.02 to 65.50 mg/L. Nitrate concentrations ranged from 0 to 100.56 mg/L and potassium concentrations ranged from N.D (not detected) to 2.50 mg/L. Major cations and anions were mainly derived from the water-rock interaction involving feldspar, gypsum and calcite. The groundwaters were mainly the $Ca-(Na)-HCO_3$ type, classified as the early stage of groundwater evolutions. The correlation between electrical conductivities and Ca concentrations in groundwaters was relatively high ($R^2=0.74$). In the correlations between ions, the correlation coefficient between $SO_4$ and Ca was 0.65 and between Mg and $HCO_3$ was 0.65.

한국 화물운송노동자의 노동환경이 교통사고에 미치는 영향 분석

이광훈 ( Kwanghun Lee ),김태승 ( Taeseung Kim ) 한국로지스틱스학회 2017 로지스틱스연구 Vol.25 No.1

한국은 타 선진국에 비해 높은 수준의 국가물류비를 지출하고 있으며, 이 중 공로화물의 수송분담률은 90.7%에 달한다. 하지만 공로화물운송에서 가장 큰 역할을 맡고 있는 영업용 화물차량의 도로안전은 열악하여 그 안정성이 떨어진다. 2014년 현재 영업용 화물차량의 사고율은 전체차량 사고율의 약 5.7배에 달하며 꾸준히 증가하는 추세에 있고, 치사율 또한 전체 차량평균보다 약 2배 높다. 영업용 화물차량의 교통사고는 일반적인 사고보다 더욱 다양한 요인이 복합적으로 작용하기 때문에 외부요인, 차량 특성뿐만 아니라 운송 자체 특성과 산업의 구조적인 특성까지 고려할 필요가 있다. 이에 본 연구는 화물운송노동자의 미거시적인 노동환경을 고려, 한국 영업용 화물차량의 교통사고의 원인을 다각도로 파악하고자 한다. 본 연구는 2015년 3/4분기 화물운송시장실태조사 자료를 토대로 진행되었으며, 한국 화물운송시장의 대표 차종인 일반 카고형 차량으로 대상을 한정하였다. 사고발생 횟수를 종속변수로 하고, 전통적인 사고유발변수와 더불어 한국 화물운송시장의 특수한 현상을 반영하는 변수들을 독립변수로 하는 회귀분석을 실시하되, 종속변수가 빈도변수이고, 데이터가 과산포의 경향을 보여 포아송 모델의 일반화 형태인 음이항 회귀모형을 최종적인 분석 모델로 선정하였다. 분석 결과, 회당 운송시간, 월평균 운송횟수, 회당 운임이 하락할 때 사고위험도가 상승했고, 회당 운송거리, 월평균 운행일수, 평균적재율, 혼재율, 거래단계수, 보험료, 부양가족수가 상승할수록 사고위험도가 상승했다. 주로 화물운송노동자의 소득 보전과 관련이 있는 요인들이 교통사고에 영향을 끼치는 것으로 드러났으며, 특히 운송거래단계가 증가할 때 사고위험도가 상승했다. 화물운송노동자의 소득 수준을 제고할 수 있는 대안 및 한국 화물운송시장의 다단계운송주선구조에 대한 개선과 보완이 필요한 것으로 사료된다. Road safety of commercial vehicle which serves as the biggest part for road freight transport industry is poor and lacks stability. As of 2014, the accident rate for commercial vehicles is approximately 5.7 times as high as the accident rate of the overall vehicles, and is steadily increasing. Since traffic accidents involving commercial vehicles are more diverse than typical accidents, we need to consider not only external factors and vehicle characteristics, but also transport characteristics and structural characteristics of the industry. The study aims to determine the cause of the traffic accident involving commercial vehicles with regard to micro and macro labor environment of the freight transport workers. This study was carried out based on the commercial truck driver survey data sheet of the third quarter of 2015, and was limited to the standard cargo type vehicle, which is representative of the freight transport market. The analysis model was selected as negative binomial regression model since it was observed overdispersion on the data. As the result of the analysis, the number of accidents increased when the hours of transportation, the monthly average number of dispatches, and the average freight rate fell and when the average km of distance, the average number of days per month, average loading rate, the rate of consolidation, the stage number of multi-tiered subcontracting, the average paying of insurance fee, the number of family increased. Factors related to the preservation of income of freight workers have been mainly found to affect traffic accidents, especially on increasing in the stage number of multi-tiered subcontracting. Finally, It is required to improve and supplement the level of the freight transport workers` incomes and multi-tiered subcontracting in Korean carge transport market.

차량용 디바이스 사용자 인터페이스를 위한 XVC(eXtensible Viewer Composition) 프래임 구조의 사용성 평가

노승환(Soonghwan Ro),이충기(Chungki Lee),정우철(Woocheol Jung),국세경(Saekyung Kuk),김태승(Taeseung Kim),우진명(Jinmyung Woo) 한국자동차공학회 2007 한국자동차공학회 Symposium Vol.- No.-

XVC (eXtensible Viewer Composition) is an in-vehicle user interface framework for telematics applications. It provides a document-oriented applications model enables drivers to make use of multiple information services simultaneously, while maintaining satisfactory control of their vehicles. In this paper, we present the usability test on XVC framework that was performed to evaluate how the XVC client may affect the driving work of drivers while trying to make use of its functions. The evaluation was performed using the Advanced Automotive Simulator System at KATECH (Korea Automobile Technology Institute). Furthermore, we also analyzed the advantages of XVC Framework and compared over non-XVC Framework through test results.

단일공 주입-추출 실험을 이용한 지하수 내 질산성질소의 생물학적 원위치 정화공법 적용가능성 평가

염여훈 ( Yuhoon Yeum ),한경진 ( Kyungjin Han ),윤종현 ( Jonghyeon Yoon ),박선화 ( Sunhwa Park ),김태승 ( Taeseung Kim ),권수열 ( Sooyoul Kwon ),김영 ( Young Kim ) 한국물환경학회(구 한국수질보전학회) 2016 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2016 No.-