This study is aimed to develop an improved shellfish dredge vessel considering the increase of the fishing safety and welfare of fishermen in Jeonnam province. We visited five fishing village societies in Korea, and conducted field surveys and survey questions to investigate the current status. In order to solve the problems presented by the investigation, a general arrangement of the improvement vessel was written and adopted after meeting between the fishermen and research team, and calculated the initial stability in five loading conditions by using the Napa program. As a result of field surveys and survey questions, the existing vessel have buoyant materials under the bow and the warp pass through the wheel-house. In addition, most fishing equipment and nets are concentrated on a narrow stern, making it difficult to work efficiently. According to the survey, fishermen also responded that operation of casting and hauling is very inconvenient. The fishing equipment of the improvement vessel was rearranged, the size of the wheel-house and the crew room was increased, and we secured a basic welfare space. As a result of the initial stability test, the stability criteria of the fishing vessel were satisfied in all loading condition.

This research carried out a study on the job characteristics of the skipper of the coastal composite fishing vessels in order to find a way to prevent the ship collision caused by the highest human error among the marine casualty of fishing boats. Video observation was used as the research method in which six CCD cameras were installed on the vessel to collect image data and data extracted from the image were analyzed to derive the results of the functional activity of skipper according to the fishing operation process of experimental fishing vessel. The results are as follows. The working process of the experimental fishing vessel consisted of navigation for fishing ground, setting line, waiting for hauling line, hauling line and navigation to homeport. In these processes, the skipper was performing watchkeeping in the wheelhouse in which he carried out a single task, a dual task that performed two tasks simultaneously, and a triple task that performed two or more tasks simultaneously. In addition, one of the risk factors causing the collision was a no watchkeeping in the wheelhouse for navigating for fishing ground, waiting for hauling line, and hauling line at 25.4%, 64.6% and 0.3%, respectively among the marine casualty while drowsiness caused 1.2% of the marine casualty in navigating for fishing ground. Concurrent tasks that simultaneously perform two or more tasks that can overlook any other important duties while carrying out watchkeeping in the wheelhouse include 51.3% of navigation for fishing ground, 81.9% of setting line, 19.0% of waiting for hauling line, 87.9% of hauling, and 88.7% of navigation to homeport. The above concurrent tasks yielded an average of 66.1%. Experimental fishing vessels are required to focus on ship handling operations related to fishery operations, and the skipper is assigned more activities and attention to fishery related tasks. Therefore, it is considered desirable to build a collision prevention system that is appropriate to the characteristics of the skipper’s work, escaping from transferring the responsibility of ship collision to the skipper completely.

The purpose of this paper is to explore the fishing grounds of trawl fishery, which are operating in the waters around Jeju Island, and to investigate the monthly shifting changes of the explored fishing grounds. Information on AIS of fishing vessels operating near Jeju Island was collected and analyzed from October 16, 2016 to October 16, 2017. Thus, the location of fishing vessels with the same operational characteristics as those in this industry was extracted and displayed on Google Maps' location drawings to analyze the dense distribution of fishing vessels according to the frequency of their appearance. In the distribution of fishing vessels that appeared in October, a wide range of fishing grounds connecting the upper and lower waters of the 221 and 222 sea of fishing area was found to have gradually expanded and increased density, showing the widest range and highest density in December, and then gradually decreasing from January 2017 to near extinction in May. The distribution of fishing vessels that appeared in the left and lower waters of the 243 sea estuary increased not only in November and December, but also in the appearing sea areas gradually moved to the 242 sea and the range of their appearance was extended to the 241 sea. In other words, the highly dense fishing area in December indirectly shows that it is winter fishing grounds for these industries. The distribution of these dense fishing vessels gradually moved north and west with each passing day, reducing their density and reaching a near extinction in August. However, in September, the density was gradually restored again. Fishing vessels that appeared in high density in the northern waters of the 224 sea east of the Yeoseo island in December were thought to be fishing vessels, whose density decreased over time, almost disappeared in May, and reappeared in July and August, showing a certain degree of density, and then decreased again.

The species composition and abundance variations of fishery resources in the adjacent marine ranching area, Tongyeong, Korea, were investigated by shrimp trawl, gill net, and longline during the period of July, September, and October in 2016. During the study period, the total catch were 8,522.9 kg with 34 species from the shrimp trawl, 32 species from the gill net, and nine species from the longline. The dominant species were different by gear, which were Hypodytes rubripinnis and Parapercis sexfasciata in the shrimp trawl, Platycephalus indicus and Raja kenojei in the gill net, and Conger myriaster and Scomber Japonicus in the longline. In terms of spatial distribution, Yongchodo showed the highest total catch in number as well as of in weight while Jukdo showed the lowest total catch in number and Bijindo showed the lowest total catch in weight. The amount of demersal fish resources in the survey area estimated as 301 ha, was 99,396 individuals which was converted to be 8,552.9 kg. The amount of demersal fish resources by gear were of trawling area, which area is 127 ha, were 76,251 and 3,489.5 kg, 74 ha in the gill net and longline survey area was 16,213 and 3,457.3 kg, and the other 100 ha area was 6,932 and 1,606.1 kg. In this study, the minimum resources for demersal fish is 61,687 and 4,265.2 kg, and the maximum is 149,439 and 14,197.9 kg.

For the study of the production and availability of biopolymer from Bacillus polymyxa YU-101, its rheological properties were investigated in comparison with other polysaccharides. The intrinsic viscosity of the biopolymer was 35.18 dL/g, showing the characteristics of the polyelectrolyte. The chain stiffness of the biopolymer was 0.55, which was expected to be extremely flexible, and the coil overlap parameter and the critical concentration were 0.722 and 0.15 dL/g, respectively. The activation energy of the biopolymer calculated by intrinsic viscosity showed two linear relationships at 50oC. Biopolymer showed pseudoplastic flow characteristics with increasing shear rate. At a concentration of 0.5% (w/w), the consistency index was 660.39 mPa·S and the flow behavior index was 0.765 and 0.4 at the shear rates of 0-11.7 s-1 and 11.7-105.3 s-1, respectively, similar to guar gum. At the shear rate of 58.5 s-1, the apparent viscosity of the biopolymer with the change of pH showed an abrupt increase in the range of acidity. In addition, the apparent viscosity of the biopolymer showed the maximum value at the 0.3%(w/w) concentration of salt, increased only by sucrose in the tested sugars.

4차 산업혁명시대를 맞이하여 데이터는 향후 디지털 경제성장을 견인할 수 있는 주요 수단의 하나로 여겨지고 있다. 종래에는 보호의 대상으로만 인식되었던 개인정보도 이제는 빅데이터의 활용과 맞물려 그로부터 경제적 이익도 도모할 수 있는 중요한 수단으로 주목받고 있다. 개인정보의 활용과 보호를 조화롭게 발전시키려면, 이를 뒷받침할 각종 제도를 정립할 필요성이 증대 되고 있다. 특히, IPv4 시대에서 IPv6의 시대로의 전환이 전 세계적으로 진행되며, 사실상 모든 기기에 고정 IP를 부여할 수 있을 정도의 규모가 됨에 따라 빅 데이터 시대에서 각종 디지털 정보들의 연결고리 가 될 수 있는 IP 주소의 중요성은 고정 IP인지 유동 IP인지 여부와 무관하게 더욱 커지게 되었다. 이 글에서는 디지털 개인정보의 한 종류인 IP 주소에 대해 살펴보고, IP 주소의 개인정보 인정 여부에 대한 국내외 논의와 함께, IP 주소에 적용 되는 현행의 개인정보보호법, 정보통신망 이용촉진 및 정보보호 등에 관한 법률을 검토하였다. 디지털 개인정보의 활용과 보호의 조화로운 발전을 위해 개인정보보호법에 IP 주소가 개인정보임을 명시함으로써 정보의 이용자들이 수집⋅활 용 전에 IP 주소가 개인정보임을 인지하고 이에 맞는 법적 동의 절차를 이행하면, 비식별화된 IP 주소를 법적 테두리 내에서 자유로이 활용할 수 있도록 보장받을 것이다. 이와 함께 정보 주체는 법률에 명시된 제도적, 기술적 안전장치로 인해 본인의 개인정보인 IP 주소가 유출, 남용되는 피해가 발생할지도 모른다는 두려움을 확실히 해소 할 수 있게 될 것이다. 이와 같은 법적 안전장치의 마련을 통해 정보 이용자의 사업 수행 권리와 정보 주체의 개인정 보보호가 조화를 이루며, 디지털 산업의 성장이 가능할 것으로 기대된다.