• 한국사회복지학
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• 제61권1호
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• pp.323-357
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• 2009

본 연구는 고령자 노동지위가설과 사회적 지위획득모델의 한계를 보완하고 통합하여, 노후 노동지위에 미치는 생애과정의 메커니즘을 조명하였다. 분석결과 첫째, 60세 이상 남성근로자의 노동지위는, 직종은 대부분이 농어업이거나 단순노무직이고, 고위직 (준)전문가는 소수에 불과하였다. 종사상 지위도 상용직과 고용주는 4.4%에 불과한 반면, 약 70%가 임시일용직과 자영업이며, 약 60%는 연 천만원 이하의 저임금근로자였다. 대부분의 고령자는 노후에도 고위직을 유지한다는 노후풍요가설이 적용되는 경우는 소수에 불과함을 말해준다. 둘째, 약 20%가 5천만원 미만의 재산을 가지고 있는 반면, 9.3%는 6억 이상의 재산을 소유하여 격차가 크다. 노후풍요가설처럼 대부분의 사람이 노후에 필요한 적절한 부를 축적하였다고 보기 어렵다. 그리고 재산은 교육수준에 따라 차이가 커서, 부의 축적은 사회적 지위획득모델이 더 적절한 것으로 판단된다. 셋째, 교육수준에 따라 생애노동경력뿐 아니라, 노후 노동지위가 달랐다. 넷째, 경로분석결과, 교육수준은 생애노동경력과 재산을 매개로 노후 노동지위에 영향을 미쳤다. 즉, 교육수준이 낮은 사람은 생애노동경력이 불안정하고, 재산이 적으며, 노년에도 일은 하지만 저임금, 낮은 사회적 직종, 불안정한 고용형태에서 근무하였다. 생애불평등이 노년에도 지속됨을 보여주는 것이다. 따라서 교육기회의 불평등과 비정규직과 영세자영업 확산을 축소시키고, 불안정 고용이 덫이 되지 않도록 제반 여건을 마련해야 한다.

• 한국환경농학회지
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• 제28권2호
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• pp.97-105
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• 2009

농어촌 등에서 소규모로 발생하는 하수를 환경친화형 인공습지 하수처리장에서 효과적으로 처리하기 위하여 인공습지 하수처리장을 시공한 후 3년 동안의 수처리 효율을 조사하였다. 하수처리 시기별 오염물질 농도 변화를 조사한 결과 BOD, COD 및 부유물질은 하수원수 농도의 편차가 심하였으나, 호기성조와 혐기성조를 통과하면서 농도가 급격히 감소하여 방류수의 BOD는 0.2${\sim}$11.8 mg/L, COD는 1.0${\sim}$41.9 mg/L 및 SS 함량은 1.1${\sim}$6.5 mg/L이었다. 방류수의 총 질소 농도는 4${\sim}$60 mg/L범위로 각 조에 유입되는 총 질소 농도에 따라 편차가 심하였고, 방류수의 총 인 농도는 0.02${\sim}$3.51 mg/L범위이었다. 연차별 BOD, COD 및 부유물질 처리효율은 연차에 따라 큰 차이를 보이지 않았으며, 시공 후 3차년도의 방류수의 BOD, COD, 부유물질의 처리효율은 각각 97, 92 및 99%로 매우 높았다. 연차별 총 질소와 총 인의 처리효율은 호기성조 처리수와 방류수 모두에서 연차가 증가함에 따라 점차 그 처리효율이 증가하는 경향이었으며, 시공 후 3차년도의 방류수 중 총 질소 및 총 인 처리효율은 각각 62 및 73%이었다. 계절별 BOD, COD, 부유물질 및 총 인의 처리효율은 4계절 모두 큰 차이가 없었으며, 방류수의 BOD 처리효율은 97${\sim}$98%, COD 처리효율은 87${\sim}$91%, 부유물질 처리효율은 99% 및 총 인 처리효율은 76${\sim}$86%로 나타났다. 하지만 계절별 방류수의 총 질소 처리효율은 봄과 겨울철이 다른 계절에 비해 처리효율이 약간 감소하였고, 특히 겨울철 방류수의 총 질소 처리효율은 43%로 여름철의 61%에 비해 18%정도 감소하였다.

• 한국화재소방학회논문지
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• 제26권6호
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• pp.85-91
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• 2012

건축물에서 화재 시 인명과 재산의 피해를 줄이기 위해서는 초기의 화염의 확산을 억제하는 것이 우선되어야 한다. 화염의 확산을 방지하기 위한 화재확산방지 대책은 일반적으로 방화구획에서의 구조부재의 내화 성능 확보, 마감재료의 연소 성능에 따른 사용 제한 등이 있다. 마감재료의 연소 성능 판단은 화염의 확산을 판단하기 위해 가장 기초적인 화재 안전 설계이지만 국내의 연소 시험은 시편 크기의 화재 시험 방법으로 연소 성능을 판단하고 있어 샌드위치패널 등과 같은 복합재료의 연소 성능을 판단하기에는 많은 제약을 가지고 있다. 특히 외벽 마감재료의 경우 내부 마감재료에 비해 드라이비트, 알루미늄복합패널, 메탈패널 등과 같은 다양한 복합재료 등이 사용되고 있기 때문에 본 연구에서는 외벽 마감재료의 국제시험규격인 ISO 13785-2 시험방법을 통해 외벽 마감재료의 실물 화재 실험을 통해 외벽 마감재료의 수직화재 확산 특성을 판단하고자 하였다.

• 수산경영론집
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• 제15권1호
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• pp.1-57
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• 1984

The fisherman has been playing the roles of forming the fisheries village and surviving the fisheries production. Therefore, we should understand the nature of the fisherman's successor-cultivation which has been performed in order to maintain equlibrium between the fisheries economy and the national economy. Thesedays, fisherman's successor-cultivation mainly has been undertaken by the government in order to facilitate forming the economic foundation of fisherman's successor who has intended to choose "fisheries" as his own occupation in the future. From the above-mentioned, we find the meaning of the undertaking as both securing the foundation of living permanently and having the worth-while life of a professional fisherman by the survival and growth of his own business. And then, choosing the "fisheries" as an occupation, the successor should be satisfied with the requisites of occupation: 1) maintaining one's living, 2) working out one's individuality, 3) fulfilling one's social role-through engaging in the fisheries. Therefore, in order to have these requisites satisfied, I intend to suggest the followings : Firstly to maintain one's living, the environment of fisheies village should be kept in good condition to facilitate the successor's economic performance. Secondly to work out one's individuality, the fisheries' educational system should be adjusted to improve fisherman's ability. 1 hope to institute "the course of regional fisheries management" in fisheries high school and junior vocational collage, and "the school of fisheries management" for the learning of advanced fisheries knowledge. Thirdly to fulfill one's role, the opportunity actively participating in decision-making of the village's affair should be prepared more sufficiently, and the present fishing-centered fisheries system should be reformed into the fish-farming-centered fisheries system. To do this, the long-perspective vision is necessary. These three suggestions are come out from the macro-view point. Meanwhile the fisherman as an individual to improve his business is from the micro-view point. That is, the public aid, financial and legal, should be prepared. The above-mentioned suggestions are necessary to equalize fisherman's social status with other professional's especially from the result of improving the successor's economic force. Therefore, the principle of cultivating the fisherman's successor should be the principle of social equilibrium. be the principle of social equilibrium.

• 수산경영론집
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• 제27권1호
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• pp.15-45
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• 1996

The sustained economic growth cannot be expected without the balanced development in all the realms of industries. Korea has recorded the continuous high growth rate of economy, but it is now facing some difficulties in keeping the normal economic growth, because industrial workers do not like to work in some fields, the typical one of which is the fishery works. This thesis aims at studying the determinants of fishermen's job satisfaction(FJS) and the determinants of affecting the fishermen's trunover intention(FTI) to obtain and maintain the man power for fishing boats. This study assumes that the determinants which affact FJS are fishermen's work values, job characteristics, the attitude of accepting their fishery work, and that the determinants which affect FTI are FJS and their perceptions of labor market. This study concerns two kinds of Job satisfaction : one is an intrinsic satisfaction which comes directly from the work itself, and the other is an extrinsic satisfaction comes from the compensation for the work, but in this study “Pollnac's work satisfaction factor” is added as an additional determinant of FJS. There is a difference in job satisfactions between the individuals who have different work values. Some feel more satisfacttion than the others, which can be explained by the internal work values which assume the work is only a means for another objective of life. This study applies Hackman and 014ham's studies to the job characteristics that a worker's job satisfaction is positively related to the core job characteristis of the job. In addition, this study transformed their studies into variables. A job enrichment to reduce the simplicity of a work and make it more valueable can increase a job satisfaction, but an existing organization has limitation in redesigning the job for its enrichment. A reasonable answer about this matter can be obtained from the workers' subjective perceptins to highly regard the objective job characteristics. Worker's previews of fishery work also affect their job satisfaction because they are already informed of the details and charcteristics of the job that they have to carry out. A Job dissatisfaction causes their intention to leave jobs owing to general perceptions prevailing in labor markets.

• International Journal of Industrial Entomology and Biomaterials
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• 제31권2호
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• pp.79-84
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• 2015

A new cecropin-like antimicrobial peptide (Px-CLP) gene was isolated from the immunechallenged larvae of the swallowtail butterfly, Papilio xuthus, by employing annealing control primer (ACP)-based GeneFishing PCR. The full-length cDNA of Px-CLP is 310 nucleotides encoding a 70 amino acid precursor that contains a putative 22-residue signal peptide, a 4-residue propeptide, a presumed 37-residue mature peptide, and an uncommon 7-residue acidic pro-region at the C-terminus. The deduced amino acid sequence of Px-CLP showed significant identities with other Lepidopteran cecropin D type peptides. RT-PCR revealed that the Px-CLP transcript was detected at significant level after injection with bacterial lipopolysaccharide (LPS). The peptides with or without C-terminal acidic sequence region were synthesized on-solid phage and submitted to antibacterial activity assay. The synthetic 37-mer peptide (Px-CLPa), which removed C-terminal acidic sequence region, was showed exclusively antibacterial activity against E. coli ML35; meanwhile, a 44-mer peptide (Px-CLPb) with C-terminal acidic peptide region was not active. This result suggests that Px-CLP is produced as a larger precursor containing a C-terminal pro-region that is subsequently removed by C-terminal modification.

• 한국수산과학회지
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• 제43권1호
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• pp.69-77
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• 2010

We examined shrimp and bycatch species composition in the shrimp beam trawl fishery off Wan-do, Korea(in the major or fishing ground)from December 2004 to November 2005. We observed a total of 103, 072 individuals in 96 taxa. By densities of individuals, 96.97% were shrimps, 1.20% decapods, 1.10% fish, 0.30% cephalopods and 0.43% other species. By catch weight, 57.29% were shrimps, 26.33% fish, 6.82% decapods, 4.64% cephalopods and 4.92% other species. In spring, the dominant bycatch species by biomass were Okamejei kenojei, Lophiomus setigerus, and Charybdis bimaculata. In summer, the dominant species were Charybdis bimaculata, Muraenesox cinereus, and Paralichlhys olivaceus. In autumn, dominants were Okamejei kenojei, Conger myriasler, and Sefipinna tenuifilis, and in winter they were Okamjei kenojei, Chaeturichthys stigmatias, and Sillago japonica. Bycatch species composition and individual species abundances differed significantly among seasons, probably indicating that variations were related to the life history characteristics of bycatch species. The diversity index was highest in October (2.797) and lowest in July (1.012). The July dominance index (0.569) was much higher than in other months; evenness was highest in September (0.856) and lowest in July (0.374). During the study period, the bycatch-to-shrimp ratio of this fishery varied from 0.063 in February 2005 to 11.031 in May 2005, with a mean of 3.363 These temporal variations may be linked 10 variations in reproductive behaviors and migration patterns of the marine animals sampled.

• 한국수산과학회지
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• 제46권6호
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• pp.835-842
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• 2013

Flathead flounder Hippoglossoides dubius is a commercially important fish in the coastal waters of Gangwon Province, which is its spawning ground and breeding habitat. A total of 1,669 gonads were sampled monthly from February 2011 to May 2013 to investigate ecological characteristics, such as variations in maturation and spawning by gonad index, visual maturity stage, histological observations and oocyte diameter. Males were numerically dominant over females in the fishing grounds year round. The spawning season was from January to April, and the peak was from February to March. Oocyte number as a measure of fecundity was between 27,372 and 915,209 eggs with a length range of 26.0-48.7 cm TL, while the largest oocyte grew to 0.9-1.4mm in egg diameter during its spawning season. The relationship between fecundity and total length was $F=0.0016TL^{5.2539}$. The smallest mature lengths of the females and males were 28.4 and 22.6 cm respectively, and the 50% mature lengths of females and males were 32.9, 26.9 cm respectively.

• 한국항해학회지
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• 제12권1호
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• pp.85-112
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• 1988

From the point of view of safety of life and property at sea and the protection of the marine environment, the Vessel Traffic Management System along the Korea coastal waterway is inevitably introduced. But the establishing priority per area must be evaluated under the restricted budget. In this case, the estimated traffic flow has a major effect on priority evaluation. In the former paper , an algorithm was proposed for estimating the trip distribution between each pair of zones such as harbours and straits. This paper aims to formulate a simulation model for estimating the dynamic traffic flow per area in the Korea coastal waterway. The model consists of the algorithm constrined by the statistical movement of ships and the observed data, the regression analysis and the traffic network evaluations. The processed results of traffic flow except fishing vessel are summarized as follows ; 1) In 2000, the traffic congestions per area are estimated, in proportion of ship's number (tonnage), as Busan area 22.3%(44.5%), Yeosu area 19.8%(11.2%), Wando-Jeju area18.1%(6.8%), Mokpo area 14.9%(9.9%), Gunsan area 9.1%(9.3%), Inchon area 8.1%(7.7%), Pohang area 5.5%(8.5%), and Donghae area 2.2%(2.1%). 2) For example in Busan area, the increment of traffic volume per annum is estimated 4, 102 ships (23 million tons) and the traffic flow in 2000 is evaluated 158, 793 ships (687 million tons). 3) consequently, the increment of traffic volume in Busan area is found the largest and followed by Yeosu, Wando-Jeju area. Also, the traffic flow per area in 2000 has the same order.