Issues in Hiriong People with Disabilities Expressed by Employers

Christina Kim,Heidi Paul 국립특수교육원 2007 특수교육연구 Vol.14 No.1

고용주의 장애인 고용에 대한 현안사항 탐색-미국 캘리포니아 지역을 중심으로 -Christina Kimm* Heidi Paul**이 연구는 장애인을 고용할 때 고용주가 갖는 기대와 문제점을 주목적으로 장애인의 고용률을 증가시킬 수 있는 요소가 무엇인지를 알아보고자 하는 연구이다 . 연구의 참가자는 미국 캘리포니아주 남부(남가주)에 사업체를 가지고 있는 2,000여 명의 고용주들에게 설문지를 보내어 약 665명으로부터 얻은 결과를 기록했다 . 참가자는 남가주 지역사회의 구성인원의 비율보다는 동양인과 히스패닉

동진강 유역 비점오염원 정밀조사

원찬희,정팔진,김민정,조선영,김세훈,김종천 전북대학교 공학연구원 ( 구 전북대학교 공업기술연구소 ) 2002 工學硏究 Vol.33 No.-

Nonpoint source pollution(NSP) arises due to agriculture activity and it is quite an extensive and complicated problem in order to control and has received a great deal of concern during the recent years, whereas point source are known to originate from an estimated volume of contaminant discharged from a distinguishable source. Extensive research work have been conducted and presented in the past with regard to the various characteristics of watershed on Dong Jin River(DJR), however there are certain drawbacks of existing survey for determining important polluting sources, distribution features of pollutants and estimated load of the organic and nutrients from the creeks. Unfortunately, investigation for loadings originating due to agricultural drainage was not satisfactory, although the regional consideration for DJR across Kim Je Field(KJF) as an agricultural area receives a reasonable source point in the agri-pollution management. Therefore it was necessary to carry out a thorough investigation into the diffuse sources resulting, to form the pollution-developing estimation and to evaluate the output roperties and determining various factors in the generation of non-point pollution. Eventually, this research work would serve as an useful tool for the development of predictive pollution management for DJR. Non-point sources in the present work were classified as municipal non-treated sewage water discharged into the river, loadings through agricultural drainages in the dry/wet field and inadequate treatment of wastewater generated from livestocks. The entire duration of the research work was from December-2001 to July-2002. Site measurement were conducted during various season, in a dry season(December), in rainfall, in seed-sowing time and also collecting data from the rural public organizations related to water management was done and examined and examined during the mid of research work. Similarly, domestic wastewater loadings due to population was based on area unit, as City, Country, Up, Myon, Dong, Ri. The Dong Jin River watershed contains small three Creeks, KoBu(KB), DongJin(DJ, including JeongEup(JE) and ChilBo(CB), WonPyong(WP). It was further divided into 32 sub-watersheds which comprises of further 5,18,9 watersheds in the creeks respectively. The results obtained from research work are presented as follows. Animal productions have marked differences in the rate of pollutant loadings reported in the following sequence: DJ(only CE)>WP>CB>KB, in a case of Korean cow and milk cow. However, it was revealed that WP creek became significantly higher than any other livestocks. According to statistical data for land use, rice field(369.0㎢) and forest(378㎢) have much occupation prior to dry paddies(125.0㎢), residential land(32.0㎢) and others(5.0㎢). Especially, rice fields receives 2.5∼3 times than dry paddies in size.

수치모델을 이용한 중소규모 하천의 수질관리

김완중,정팔진 全北大學校 1995 論文集 Vol.40 No.-

The problems of dongjin river were multi-branchs and control of flow rate. Inverstigated water quality of the mainstream and Cheongup stream, water quality was little changed before and after choenup stream joined. In this paper, Qual-2E model was applied for water quality management in the dongjin river and Cheongup stream at 2004. The results obtained could be summarized as follows: - in oder to achive the water quality aim at 2004, treatment plans of BOD removal should be 70% in upstream of the dongjin river, 40%-Cheongup stream. - in order to water quality of dongjin river, flow rate of upstream sould be controls to be closely connected with discharge of the seomjin river-dam.

Aik Sang Busik System의 유기물제거특성과 Activated Sludge System과의 연계처리에 관한 연구

정팔진,김민정,김성진 全北大學校 附設 都市및環境硏究所 1997 都市 및 環境硏究 Vol.12 No.1

In ASBS(Aik Sang Busik System), removal efficiency of TSS was increased abut 10.5%, 9% in COD_Mn and COD_Cr, respectively as the air inflow was increased from 7.3 l/min to 11.04 l/min, The same processing also improved removal efficiency of DSS by 21.1% in COD_MN, 23.1% in COD_Cr and 36% in BOD_5. When the effluent of ASBS was treated by Activated Sludge System, removal efficiency of TSS and DSS was about 45∼60% and 25∼60%. Respectively the results may be derived from lower DSS compared with TSS in effluent of Aik Sang Busik System.

하상 퇴적물의 고형물과 영양염의 함량 및 분포

정팔진,김민정,권지영,정진필 全北大學校 附設 都市및環境硏究所 1999 都市 및 環境硏究 Vol.14 No.1

This study was performed in order to investigate organic matters and nutrieny contents of sediment on the Ik-san stream. Samples were collected 2 times during this study period at 5 points. The results were as follows ; The concentration of COD in the sediments were "Nonpolluted" by criteria of EPA. But the contents of volatile solids in the sediment were over 8%, "heavy polluted" by criteria of EPA. The concentration of Niitrogen in the sediments were "Nonpolluted" by criteria of EPA. And the concentration of T-P in the sediments were "Nonpolluted" by criteria of EPA. Therefore, it is surveyed that the sediments of Ik-san stream not yet polluted.

조류성장잠재력(AGP) 시험에 의한 섬진강의 조류생장 제한영양염의 추정

정팔진,김민정,김종신 全北大學校 附設 都市및環境硏究所 1996 都市 및 環境硏究 Vol.11 No.1

Algal Growth Potential spike test of Sumjin River were carried out in order to identify algal growth limiting constituents. To investigate the water quality of Sumjin river, samples were collected 8 times during this study period at five station. BOD, T-N and T-P loading were sequentially caused by live stock, human activity, land and fish farm. The amount of BOD, nitrogen and phosphorus accumulated were respectively 12,165.1㎏/d, 2,416.9㎏/d and 1,119.8㎏/d. Particularly, 69 percent of total BOD loading, 66 percent of T-N and 92 percent of T-P loading resulted from live stock. Among the tested sites, W-1 point water greadly produced biomass up to 14㎎ dry weight of Selenastrum capricornutum/ℓ due to the fact that 0.1㎎ PO_4-P/ℓ addition of orther constituents are excessive. Therefore, Sumjin River were identified as extremely phosphorus-limited water for algal growth.

인공호의 부영양화 평가

정팔진,김민정,권지영 全北大學校 附設 都市및環境硏究所 1999 都市 및 環境硏究 Vol.14 No.1

Studies on physico-Chemical factors in Buan Dam were carried out from July, 1998 to June, 1990. To investigate the water quality of Buan Dam, Samples were collected 3 times during this study period at three station. The Environmental factors were Water Temperature(3∼28℃), pH(6.3∼8.8), DO(7.0∼14.4), COD(1.4∼3.3㎎/ℓ), T-P(0.001∼0.032㎎/ℓ), T-N(0.760∼2,100 ㎎/ℓ) and Chl-a(1.0∼9.2㎎/㎥), respectively. The purpose of this study is to evaluate and to predict of eutrophication in Buan Dam by using Vollenweider Index. The trophic states of Buan Dam can be assessed as eutrophy because Nitrogen loading exceeds the critical nitrogen loading by Vollenweider Index. Due to the fact that ratio Nitrogen/Phosphorus of constituents are excessive. Therefore, Buan Dam were identified as extremely Phosphorus-limited water for algal growth.

간헐 혐기·호기공법에 의한 축산폐수의 처리에 관한 연구

정팔진,김민정,현미희,정진필 全北大學校 附設 都市및環境硏究所 1996 都市 및 環境硏究 Vol.11 No.1

The livestock waste which contains a high concentration of nutrients was operated by the continuous operation and anaerobic·aerobic process in order to observe the features of biological N, P reaction. As the characteristics of the livestock waste and Aiksang Busic Liquid were studied, the basic data of an efficient development of Aiksang Busic Liquide were suggested through the problems in a real operation. During the handling of livestock waste, the eliminating tendency of organic substats in a reactor and anaerobic·aerobic process were steady as same as SCODcr and TOC. The efflent SCODcr 1,575㎎/ℓ decreased to 820㎎/ℓ in an aerobic reactor. In addition, 52.2% of the efflent was eliminated and this figure indicated that the biological matters having the potential decomposition were completely decomposed. While the livestock waste was being handled by anaerobic·aerobic process, "24hr track study" was performed to measure "release-uptake rate" caused by poly-P organisms. The result of this study was quite different form the studies done before. Total N and dissolved N were hot released and these concentration sharply decreased during the anaerobic period. On the other hand, these concentration increased during the aerobic period.

소양천의 수질현황 및 영양도 판정에 관한 고찰

정팔진,김민정,권지영 全北大學校 附設 都市및環境硏究所 1997 都市 및 環境硏究 Vol.12 No.1

This study was performed in order to estimate the water quality and the trophic state for Soyang Stream. To investigate the water quality of Soyang Stream, samples were collected 3 times during this study period at seven points. The water quality criteria of the Soyang Stream is polluted over second grade. Particularly, Soyang chun were polluted highly from pollution of the branches. By using the standards of EPA, the standards of Forsberg & Sakamoto, the standard of Vollenweider and KTSI, this study was done the present condition of trophication for Soyang Stream. The limiting factor of Soyang Stream was T-P by the standards of Forsberg & Sakamoto and the standard of Vollenweider. By using the standards of EPA, the standard of Vollenweider and KTSI, the result was "eutrophic" at all points of Soyang Stream.

축산폐수 처리시 연계처리 가능성과 미생물의 특성에 관한 연구

정팔진,현미희,김민정 전북대학교 공학연구원 ( 구 전북대학교 공업기술연구소 ) 2002 工學硏究 Vol.33 No.-

The livestock waste which contains a high concentration of nutrients was operated by aerobic digestion process and activated sludge process in order to observe the characteristics of biological N·P elimination. In addition, this result was different form that of municipal waste-water because of a complicated reaction caused by the characteristics of highly concentrated waste-water. After an aerobic process was operated for 15datys(HRT), NO3-N increased from 175 ㎎/L in influent to 980㎎/L in effluent and dissolved P increased from 51㎎/L in influent to 143㎎/L in effluent. Consequently, the treatment of P and N cause a big economic problem during the second-stage operation. When effluent which goes through an aerobic process in the second-stage operation is continuously treated by activated sludge, this effluent with or without O_3 contacts is experimented. The sample analysis was carried out by the class filter. The elimination rate of organic materials is not quite different form that of N·P due to the fact that the concentration of dissolved organic materials is very low, compared to NBD. However, the reactor is generally stable because its influent contacts with O_3 and there are a variety of microorganisms when they are observed through a microscope.