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      • KCI등재

        이용자간 만족도를 고려한 공원의 공간개선 방향연구 - 목포시 삼학도공원을 중심으로 -

        박성현 ( Park Sung-hyun ),배현미 ( Bae Hyun-mi ) 한국도서(섬)학회 2020 韓國島嶼硏究 Vol.32 No.4

        본 연구에서는 역사와 문화를 품고 있는 목포 삼학도공원의 재정비계획 수립과정에서 이용만족도를 높이기 위한 계획 및 설계에 필요한 기초자료를 제공하고자, 공원 이용자들을 대상으로 만족도 분석을 진행하였다. 구체적으로 먼저, 역사적인 측면에서 삼학도공원의 특징을 살펴본 후, 공원시설의 구성과 운용실태에 대해 살펴보았다. 다음으로 삼학도공원의 이용과 만족도 조사를 시민과 관광객을 대상으로 실시한 결과로는 첫째, 삼학도공원은 주말을 이용해서 가족 및 친구와 함께 여가를 즐기기 위한 공간으로서 근린공원의 특징을 보이고 있는데, 이는 시민들이 삼학도공원을 근린공원의 이미지로 인식하는 것과 맥락을 같이 하고 있다. 둘째, 삼학도공원을 찾는 관광객들은 전남지역에 거주하는 사람들이 많았고, 연령층은 시민과 비슷하게 40대와 50대가 가장 높은 것으로 나타났고, 이들은 가족과 함께 관광목적으로 방문한 것으로 나타났다. 셋째, 시민과 관광객 모두 삼학도공원의 이용 및 시설에 대해서는 대체로 만족하는 것으로 나타났으며, 시민은 그 이유로 편안한 쉼터와 좋은 자연환경이라고 응답하였다. 넷째, 시민과 관광객 모두 삼학도공원 이용 시 관리실, 화장실, 매점 등 안내 및 편의시설의 부족하다는 문제점을 제기하고 있으며, 삼학도에 새롭게 만들어졌으면 하는 시설과 사업에 대해시민과 관광객들은 섬의 정체성을 나타내기 위해 특색 없는 다리를 대신하여 육지와 삼학도를 이어주는 가동교 설치를 원하는 것으로 나타났다. 이용자간 만족도를 고려한 공원 공간개선 방향은 정리하면, 첫째 매립지의 기존 공원Zone(A)은 현재 공원시설을 최대한 활용함을 원칙으로 하고 이용측면에서 제기된 문제점을 개선하면서 지역 정체성을 살리고 최근의 트렌드에 맞는 새로운 아이템을 도입하는 방향으로 설계한다. 둘째, 삼학도 활용 Zone(B)은 복원된 삼학도를 적극적으로 활용하는 방향으로 설계한다. 셋째, 공원입구 Zone(C)는 공원의 위치 등 인지도 향상을 위한 안내 홍보 및 가동교 등 랜드마크 설치, 동선 유도책 등이 필요하다. 넷째, 목포내항 삼학도 해안 Zone(D)는 우수한 조망점이라는 특징을 적극 활용하고, 내륙과 내항측에서 접근이 용이한 동선 및 시선 유도계획 방향으로 설계한다. 본 연구의 결과를 통해 섬을 활용한 공원을 조성할 시 시설이용도 및 이용자 만족도를 높이 기 위해 일반적인 근린공원으로 그 역할을 제안하는 것보다는 해당 공원을 통해 지역의 문화와 정서를 담고 섬만의 정체성을 살리는 전략과 계획이 필요하며, 이러한 방식이 섬을 활용한 공원의 지속가능성을 보장할 수 있을 것이다. In this study, the author analyzed satisfaction with Samhak Island Park among park users with an aim to provide basic data essential to be applied in the planning and design phases in a way that enhances their satisfaction in the process of setting up the reorganization plan of this park entailing both the history and culture of Mokpo City. As a first step, the author first examined the characteristics of this park in terms of history and closely looked into the organization and features of park facilities. Secondly, the direction of space improvement plans was proposed based on the findings of the survey on satisfaction among residents and visitors at Samhak Island Park. To summarize the ways to improve park space considering satisfaction among park users, the current park Zone(A) at Mokpo landfill should be designed to address problems in terms of visiting, uphold the local identity, and introduce popular and trendy items, while maintaining the principle of making the best use of the present park facilities. Second, Zone(B) should be designed in a way that takes greater advantages of the restored Samhak Island. Third, Zone(C) representing an entrance requires tasks such as promotional activities to make public its location, landmark installments such as a movable bridge, and improved path guidance. Fourth, Zone(D) by the ocean of this island at the inner harbor should be designed to reflect its outstanding view point in the way that the users are allowed to have easier access from land as well as from the inner harbor as part of its view-attracting plan. The findings revealed that when it comes to building new parks using existing islands, strategies and plans to maintain its identity as an island while upholding its culture and feeling are needed rather than proposing its role as an ordinary neighborhood park to boost facility use and user satisfaction. This way is expected to successfully ensure sustainability related to parks using existing islands.

      • KCI등재

        도시의 모험놀이터‘플레이파크’에 관한 고찰

        신순호(Shin Soon Ho),박성현(Park Sung Hyun) 한국도시행정학회 2011 도시 행정 학보 Vol.24 No.1

        The purpose of this study is to suggest a preliminary data based upon implications from the analysis of Japan’ s Play Park that how we could introduce Play Park in the urban environment. With this in mind, We have looked at the concept of Play Park, the history of Play Park, and the role of Play Park. After that, We have examined “Hanegi Play Park”, which is known for the most advanced model in Japan, based on the following analytical frameworks. First of all, We identified geographic characteristics (location, area, space, facilities, and tools), and then looked into utilization(number of users, age of users, and contents of play), operating structure(operating system and solidarity), and operating contents and method(finance, safety, program, and insurance). In order to enhance the accuracy of research, We have used the different way of research according to its characteristics such as geographic characteristics with observation and utilization, operating structure, and operating contents and method with interview. After analyses, We have found out that a few thing were shall be considered before it introduced Play Park in urban environment. First, Play Park did not require special components such as condition of site and man-made structures, therefore We suggested that we should consider trying the existing park that hardly uses or becomes obsolete on a trial basis. Second, We suggested that we need to take account of operating solidarity in order to make the best use of Play Park. In other words, it shall be an organic cooperation system that local government limits their role to provide only place and finance, while residents could take charge of Play Park operation and all other matters as a “trust”way. Last but not least, it should be discussed how to raise funds. In case of “Hanegi Play Park”, it consists of two parts with ratio of 3:1; consignment fee from local government and earnings from own business. We, however, need to discuss whether this ratio is reasonable or not. It is more desirable to raise funds through own business as much as possible rather than local government financial support.

      • KCI등재

        Simultaneous Optimization Techniques for Multi-purpose Response Functions

        박성현,Park, Sung-Hyun Military Operations Research Society of Korea 1981 한국국방경영분석학회지 Vol.7 No.1

        In many response surface optimization problems for industrial processes, there are more than two responses of interest, and we want to find the optimal levels of the factors that influence the responses. This paper is to propose how to set up the desirability functions to find the optimum for a given set of data, and to propose how to analyse the data and the desirability functions to determine an optimal operating condition for the factors. To implement the proposed method in practice, a FORTRAN computer program was written and explained. Finally, an industrial example is illustrated to explain the proposed technique and the source list of the computer program is attached for the users.

      • KCI등재

        Thixomolding 공정으로 제조된 Mg-xAl-yZn계 마그네슘 합금의 미세조직과 기계적 물성에 미치는 Ti 첨가 영향

        박성현,장호승,이지호,박노진,오명훈,Park, Sung-Hyun,Jang, Ho-Seung,Lee, Ji-Ho,Park, No-Jin,Oh, Myung-Hoon 한국열처리공학회 2019 熱處理工學會誌 Vol.32 No.4

        The microstructural features and relative room temperature mechanical properties were investigated in various compositions of Mg-xAl-yZn alloys by thxiomolding process. The microstructure was composed of ${\alpha}$-Mg particles and mixture of ${\alpha}$-Mg and ${\beta}-Mg_{17}Al_{12}$ eutectic phase. The amount of ${\beta}-Mg_{17}Al_{12}$ eutectic phase in mixture was increased with increasing Al and Zn contents without grain refinement. After adding Ti content, however, the morphology of ${\beta}-Mg_{17}Al_{12}$ eutectic phase transformed from net-like to discontinuous shape and the average grain size reduced. To determine the relationship between microstructural features and their mechanical properties, a tensile test was performed at room temperature. As a result, it was found that the mechanical properties were improved in all of Ti contained alloys due to increased elongation and the mechanisms are discussed in terms of microstructural evolution.

      • KCI등재

        복합생균제와 항생제 급여가 육계의 생산성 및 육질에 미치는 영향

        박성현,최정석,정동순,어중혁,최양일,Park, Sung-Hyun,Choi, Jung-Suk,Jung, Dong-Soon,Auh, Joong-Hyuck,Choi, Yang-Il 한국축산식품학회 2010 한국축산식품학회지 Vol.30 No.3

        본 연구는 복합생균제(Lactobacillus casei, Bacillus subtilis, Saccharomyces cerevisiae, Aspergillus oryzae, Streptomyces griseus)와 항생제 급여가 육계의 생산성 및 육질에 미치는 영향을 구명하고자 수행하였다. 사양시험 1에서, 생균제 첨가수준은 0.1, 0.3, 0.5% 첨가구중에서 0.3% 첨가구가 일당증체량, 사료요구율, 도계율에서 가장 우수한 결과를 나타내어 적정첨가수준으로 판단되었다. 생균제와 항생제 첨가수준을 달리한 사양시험 2에서는 항생제(oxytetracycline) 100%만을 첨가한 처리구에서 일당증체량과 사료요구율이 가장 우수한 것으로 나타났으나, 복합생균제 0.3%를 첨가한 대신 항생제 수준을 50%로 낮춘처리구에서도 타 처리구에 비해 우수한 일당증체량과 사료요구율을 나타내었고, 도계율은 가장 높은 경향이었다. 복합생균제 0.3%와 항생제 50%를 혼합첨가한 처리구의 육질특성에서도 전단력이 다소 높은 것을 제외하고는 일반성분, pH, 보수력과 육색에서는 큰 차이가 없었다. 그 외 항생제 100%만을 첨가한 처리구에 비해 복합생균제 0.3%와 항생제수준을 50%로 낮춰 첨가한 처리구에서 맹장 내 E. coli와 Salmonella균의 성장억제경향이 관찰되었으며, 혈액 내 총 콜레스테롤 수치와 고밀도 콜레스테롤 수치의 감소경향도 나타나 저항생제 수준의 고품질 닭고기 생산에 적합한 사양방법으로 사료되었다. 그 외 계육내 잔류 항생물질 분석에서 항생제 100% 처리구에서는 0.1 ppm 수준을 보였으나, 생균제 0.3%와 항생제 50% 복합처리구에서는 잔류항생물질을 40% 수준으로 낮출 수 있음을 확인할 수 있었다. This study was undertaken to investigate the effects of feeding complex probiotics (Lactobacillus casei, Bacillus subtilis, Saccharomyces cerevisiae, Aspergillus oryzae, Streptomyces griseus, $1.5{\times}10^{10}$ CFU/kg) and antibiotics (oxytetracycline (OTC), 110 ppm) on growth performance and meat quality characteristics of broiler chicks. In the experiment 1, 0.3% complex probiotics feeding level was chosen to be proper addition level due to better average daily gain (ADG), feed conversion (FC) and dressing percent (DP) results among 3 levels (0.1, 0.3 or 0.5%). In the experiment 2, 5 treatments (T1, no probiotics + no antibiotics; T2, probiotics 0.3% + no antibiotics; T3, probiotics 0.3% + antibiotics 50%; T4, probiotics 0.3% + antibiotics 100%; T5, no probiotics + antibiotics 100%) were investigated. In the growth performance of broilers, T5 (antibiotics 100% only) showed the highest (p<0.05) ADG and FC values while T1 (control) showed the worst growth performance. However, T3 (probiotics 0.3% + antibiotics 50%) showed higher ADG (p<0.05), FC (p<0.05) and DP (p>0.05) values compared to control. In the breast and leg meat quality, T3 showed similar pH, proximate composition, cooking loss and meat color values except shear force value compared to T5. Addition of 0.3% probiotics with 50% antibiotics (T3) tended to lower the blood cholesterol levels of broiler chicks and Escherichia coli or Salmonella counts in cecum microflora of broiler chicks compared to T5. In the residual antibiotics analysis, T3 contained 0.04 ppm of residual antibiotics in the breast meat while T4 or T5 contained 0.1 ppm of residual antibiotics and addition of 0.3% probiotics with 50% antibiotics in broiler diets could lower the residual antibiotics level to 40% in the meat. As a result, 0.3% probiotics addition with 50% antibiotics in the broiler diets could be recommended for the production of high quality broiler meat.

      • KCI등재

        Fe-Cr-Al 기 산화물 분산강화 합금의 미세조직에 미치는 분말제조 공정 영향

        박성현,오승탁,Park, Sung Hyun,Oh, Sung-Tag 한국재료학회 2017 한국재료학회지 Vol.27 No.9

        An optimum route to fabricate oxide dispersion strengthened ferritic superalloy with desired microstructure was investigated. Two methods of high energy ball milling or polymeric additive solution route for developing a uniform dispersion of $Y_2O_3$ particles in Fe-Cr-Al-Ti alloy powders were compared on the basis of the resulting microstructures. Microstructural observation revealed that the crystalline size of Fe decreased with increases in milling time, to values of about 15-20 nm, and that an FeCr alloy phase was formed. SEM and TEM analyses of the alloy powders fabricated by solution route using yttrium nitrate and polyvinyl alcohol showed that the nano-sized Y-oxide particles were well distributed in the Fe based alloy powders. The prepared powders were sintered at 1000 and $1100^{\circ}C$ for 30 min in vacuum. The sintered specimen with heat treatment before spark plasma sintering at $1100^{\circ}C$ showed a more homogeneous microstructure. In the case of sintering at $1100^{\circ}C$, the alloys exhibited densified microstructure and the formation of large reaction phases due to oxidation of Al.

      • SCOPUSKCI등재

        Camphene/WO<sub>3</sub>-NiO 슬러리의 동결건조 및 수소분위기 열처리에 의한 W-Ni 다공체 제조

        박성현,박성민,박소정,박보영,오승탁,Park, Sung Hyun,Park, Seong-Min,Park, So-Jeong,Park, Bo-Yeong,Oh, Sung-Tag 한국재료학회 2018 한국재료학회지 Vol.28 No.2

        The present study demonstrates the effect of raw powder on the pore structure of porous W-Ni prepared by freeze drying of camphene-based slurries and sintering process. The reduction behavior of $WO_3$ and $WO_3-NiO$ powders is analyzed by a temperature programmed reduction method in Ar-10% H2 atmosphere. After heat treatment in hydrogen atmosphere, $WO_3-NiO$ powder mixture is completely converted to metallic W without any reaction phases. Camphene slurries with oxide powders are frozen at $-30^{\circ}C$, and pores in the frozen specimens are generated by sublimation of the camphene during drying in air. The green bodies are hydrogen-reduced at $800^{\circ}C$ and sintered at $1000^{\circ}C$ for 1 h. The sintered samples show large and aligned parallel pores to the camphene growth direction, and small pores in the internal wall of large pores. The strut between large pores, prepared from pure $WO_3$ powder, consists of very fine particles with partially necking between the particles. In contrast, the strut densification is clearly observed in the Ni-added W sample due to the enhanced mass transport in activation sintering.

      • KCI등재

        MVPT-R을 이용한 한국과 미국 전학령기 아동의 시지각 능력 비교를 위한 기초 연구

        박성현,박소정,박수희,정혜림,장문영,Park, Sung-Hyun,Park, So-Jung,Park, Soo-Hee,Jung, Hye-Rim,Chang, Moon-Young 대한감각통합치료학회 2005 대한감각통합치료학회지 Vol.3 No.1

        Objective : The purpose of this study was to indicate the foundational data to standardize MVPT-R for Koreans. Method : This study was conducted on 221 children ranging in all preschool age from 4 to 6 years residing in Busan and Kyungsangnam-do. It was performed from January 12, 2004 to April 30, 2004. Result : First, similar to American children, as Korean children grow older, the mean raw score of MVPT-R increased. Second, Korean children's mean raw score was higher than that of American children; 3.51 in 4 age, 1.52 in 4.6 age, 2.93 in 5 age, 1.72 in 5.6 age, 1.84 in 6 age and 0.48 in 6.6 age. Third, the mean of PQ(106.57) in Korean children was higher than that of PQ in American children. Fourth, The raw score in Korean children was higher than the raw score in American children in most of the subjects(excluding visual closure subjects). Conclusion : The visual perception skill of Korean children is higher than that of American children. If we apply MVPT-R developed in U.S to Korean children, it will be difficult for Korean children to achieve the adequate results. Therefore, we must use the standardized MVPT-R for Korean that can minimize the differences between American and Korean children's visual perception skills.

      • KCI등재

        세라믹소재를 이용한 해수압센서 제작 및 전기적 특성 연구

        박성현,김은섭,정정균,Park, Sung-Hyun,Kim, Eun-Sup,Jung, Jung-Kyun 한국전기전자재료학회 2015 전기전자재료학회논문지 Vol.28 No.6

        In this paper, we fabricated ceramic body and sapphire wafer in order to develop a hydraulic pressure sensor with high sensitivity and high temperature stability. The sapphire wafer was adopted with a membrane of capacitance ceramic pressure sensor. The capacitance value of the sensor for the finite element analysis(FEM) showed a linear pressure characteristics. Membrane was processed with a diameter of 32.4 mm and a thickness of 1 mm by using alumina powders. Ceramic body was processed with a diameter 32.4 mm and a thickness 5 mm. The capacitance pressure sensor was made with high heat treatment of the ceramic body and the sapphire wafer. Initially capacitance of the pressure sensor was 50 pF and a capacitance of 110 pF was measured from 5 bar pressure. Output voltage of 5 V was appeared at 5 bar pressure.

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