• Title/Summary/Keyword: Activity Cost

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A Case Study on Use of the Production Innovation Methods for Improving Productivity (생산혁신 기법을 활용한 생산성향상 사례연구)

  • Kim, Kwang Soo;Seo, Chen Beom;Chuhg, Soon Seok
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.8 no.3
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    • pp.147-155
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    • 2013
  • This paper study is for enhance the productivity. The purpose of this study is save the cost and contribute the enhancing company's competitiveness by analysis overall wastes in production line and improve the wastes in production line. Many company does not have clear process for analysis the wastes in production line. so they use classical IE tool and advanced IE tool by considering their current situation but the result was not so effective. The study to arrange the classic IE and advanced IE by each step to analysis the wastes by each production line include assembly line and processing line and automation line so that we can predict the mount of the overall wastes and easily select / focus on the tool for maximize the improvement result. It will contribute to establish the mid term and long term improvement activity plan.

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Analysis of Energy Efficiency Design Index and Onboard Power Capacity for New Building Ships (신조선의 에너지효율설계지수와 선상 동력용량에 대한 분석)

  • Lee, D.C.;Millar Jr, Melchor M.;Nam, J.G.
    • Journal of Advanced Marine Engineering and Technology
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    • v.33 no.6
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    • pp.843-851
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    • 2009
  • Much work has already been done to control and regulate the worldwide problems caused by climate change, particularly the issues on greenhouse gas (GHG) emissions. Carbon dioxide (CO2), having the highest form of concentration among GHGs composed around 1.0 billion tons of emission, and comprises about 98% of the total emissions from the shipping industry. Korean trade mainly rely on the sea transportation. Korean ship tonnages that was brought about by shipbuilders all over the country, continues to grow annually due to the prevailing demands on goods or material supplies and depicting only a small part of the global maritime activity. Nowadays, new build ships coming from the Korean Shipbuilders are being optimized by hull, structure and appendages design, The operational capability of the propulsion and auxiliary machineries in its maximum capacity to achieve the highest possible efficiencies for energy and onboard power use to mitigate CO2 emissions are continually being done through the help of research and development. In this paper, the energy efficiency design index and anboard power capacity of Korean new build ships have been analyzed with response to data collected by ship types, and its respective fuel consumption in relation to CO2 emission results. In response to climate change convention outcome proposals, the best way for the new build ships to become energy efficient is by lowering its operational speed thru adopting the state of the art diesel propulsion engines, patronizing the best sailing practice to lower the transportation cost on the different sea trade routes also helps in CO2 mitigation.

A Study on Efficient Software Education Donation Ecosystem

  • Kil, Hyunyoung;Lee, Won Joo;Lim, Chunsung
    • Journal of the Korea Society of Computer and Information
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    • v.23 no.4
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    • pp.175-182
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    • 2018
  • In this paper, we propose a software education ecosystem model for activating software education donation. First, in order to investigate current software education donation status, we will conduct a survey on software education donors and analyze the results. 39.6% of the software education donors responded that they were introduced to software education donation activities through their affiliated companies, institutions, organizations. Therefore, it can be seen that the promotion of software education donation activities is the most effective by promoting through software companies, organizations, and organizations and using human networks. The subjects of software education donation activities were the highest at middle school students (73.9%), and the contents of software education donations were the highest at programming practice (63.3%). Donors' satisfaction with software education donation activities was 57.9%. The social support for SW education donors was in the order of software education contents support, activity cost support, equipment and network support, and place sponsorship. 87.4% of donors were willing to continue to donate to software education. The reason why they did not want to continue donating software education was 'lack of personal time' (65.4%). Therefore, it is necessary to develop appropriate social support and incentive system to overcome shortage of personal time in order to activate software education contribution. In order to promote sustainable software education donations, it is essential to establish a virtuous circle of software education donation ecosystem based on cooperation and solidarity with various organizations such as government, corporations, institutions, universities and civil society organizations.

A Study on the Appropriateness of Health Insurance Fee in Main Nursing Practices (주요 간호활동의 건강보험 수가 적절성에 관한 연구)

  • Kim, Yunmi;Kim, Kyungsook;Park, Mi Mi;Kim, In Sook;Kim, Mi Young
    • Journal of Korean Clinical Nursing Research
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    • v.23 no.2
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    • pp.236-247
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    • 2017
  • Purpose: This study was to present improvement strategy and the problems of the nursing fee in national health insurance system. Methods: A total of 23 nursing activities performed by nurses were selected. Data were collected the relative value score and criteria of the Health Insurance Review & Assessment Agency. Sixty clinical nursing experts panels were composed and nursing time surveyed self-reported method. The actual fee was calculated through the nursing time, relative value score and actual labor costs. Nextly, the labor costs analyzed was compared with that in the national health insurance. Results: Although the practices were mainly performed by the nurse, other occupations have been recorded as main practitioners and the time of the nursing activity is partially improperly reflected. Additionally, although the nurse practiced mainly in glucose (semi-quantitative) test, it was confirmed that the principal practitioner was described as a clinical pathologist. The the labor cost gap was estimated that is 9.3 times (median) and 11.9 times (average) in this analysis. Conclusion: This study suggests that it is necessary to legislate a policy that can improve the quality of clinical nursing by reinforcing the appropriateness and improving nursing fee through reflection of the actual time spent for nursing care.

A Design of N-Tiers Platform for Building Enterprise Framework with Development Productivity (개발 생산성 있는 엔터프라이즈 프레임워크 구축을 위한 N-Tiers 플랫폼의 설계)

  • Lee, Myeong-Ho
    • Journal of Digital Convergence
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    • v.11 no.10
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    • pp.411-417
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    • 2013
  • Enterprises utilize software development strategically within digital convergence of information technology. Software development direction of IT takes advantage of new technology through integration of across-the-board data and business process standardization and integration. But, software development environment of enterprises which globalization is accelerated gradually is doing cost-cutting effort with controls and administration about various reform activity. Nevertheless, have not normalized in customer's requirement according to project, there is visual point that excessive software development integration work and administration are necessary according as connection is not harmonious with new system. Therefore, in this study, to construct these real-time integration environment, do to propose database implementation that have productivity by deent,ing N-Tiers platform for building enterprise framework with development productivity presentation, middle(business) and data(EIS) tier that take advantage of MVC design pattern.

Anti-biofouling properties of silver nano-particle coated artificial light-weight aggregates (은 나노 입자가 코팅된 인공경량골재의 생물오손 방지 특성)

  • Kim, Seongyeol;Kim, Yooteak;Park, Yongjoon
    • Journal of the Korean Crystal Growth and Crystal Technology
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    • v.25 no.5
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    • pp.212-217
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    • 2015
  • Ships and marine structures have a lot of problems in their high maintenance and operating cost by biofouling. A biofouling occurrs by the adhesion of marine microorganism, algae and bacteria. In this study, the aim is to prevent or to reduce the biofouling phenomena through silver nano-particle coating on artificial light-weight aggregates and geopolymer. The antibacterial activity on them is tested according to ASTM E2149-2013a. The test results showed, it is estimated that silver nano-particles removed 99.99 % of bacteria. Specimens were set up in the sea side of field test area in Korea Institute of Ocean Science and Technology (KIOST) and have been observed for five months. The anti-biofouling effect and difference in weight change rate have been detected two months later after the installation. Because silver nanoparticles inhibit bacterial growth and kill the cells by destroying bacterial membranes, silver nano-particle coating on artificial lightweight aggregates is a well-suited and eco-friendly method for preventing biofouling in the sea up to 5 months.

Response of Soybean (Glycine max L.) to Subsurface Drip Irrigation with Different Dripline Placements at a Sandy-loam Soil

  • Lee, Sanghun;Jung, Ki-Yuol;Chun, Hyen-Chung;Choi, Young-Dae;Kang, Hang-Won
    • Korean Journal of Soil Science and Fertilizer
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    • v.51 no.2
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    • pp.79-89
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    • 2018
  • Subsurface drip irrigation (SDI) system is considered one of the most effective methods for water application. A 2-year field study was conducted to investigate the effect of SDI systems with various dripline spacing (0.7 or 1.4 m) and position (under furrow or ridge) on soybean (Glycine max L.) production at a sandy-loam soil in Miryang, South Korea. For 2016-2017, average grain yield in SDI irrigated plots, 3.16Mgha1, was statistically greater than rainfed irrigated plot (2.63Mgha1). Soybean grain yield averaged 3.25Mgha1 for the 0.7 m dripline spacing and 3.07Mgha1 for the 1.4 m spacing for the two-year period compared to a rainfed irrigated average of 2.63Mgha1 for the same period. Soybean treated with SDI system had significantly greater values of normalized difference vegetation index and stomatal conductance, indicating that soybean plants in SDI plots had greater photosynthetic and stomatal activity due to the higher water availability in soil. Irrigation water use efficiency (IWUE) was greatest in the plot of 0.7 m spacing installed under ridge position than any other plot across growing season. Average soil water content in plots with 0.7 m dripline spacing was 0.21m3m3 at 5 cm depth layer, which was 45% greater compared to the plots with 1.4 m spacing, even though the gross irrigation amounts were greater in 1.4 m spacing plots. It is concluded that wide dripline spacing (1.4 m) is probably the more economical installation design for SDI system compared to 0.7 m spacing in this study soil because the initial cost for dripline may be reduced with wide spacing design, even though the IWUE is greater in the plot of 0.7 m dripline spacing.

Synthesis and Characterization of Magnetic Nanoparticles and Its Application in Lipase Immobilization

  • Xu, Jiakun;Ju, Caixia;Sheng, Jun;Wang, Fang;Zhang, Quan;Sun, Guolong;Sun, Mi
    • Bulletin of the Korean Chemical Society
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    • v.34 no.8
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    • pp.2408-2412
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    • 2013
  • We demonstrate herein the synthesis and modification of magnetic nanoparticles and its use in the immobilization of the lipase. Magnetic Fe3O4 nanoparticles (MNPs) were prepared by simple co-precipitation method in aqueous medium and then subsequently modified with tetraethyl orthosilicate (TEOS) and 3-aminopropyl triethylenesilane (APTES). Silanization magnetic nanoparticles (SMNP) and amino magnetic nanomicrosphere (AMNP) were synthesized successfully. The morphology, structure, magnetic property and chemical composition of the synthetic MNP and its derivatives were characterized using transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR) analysis, X-ray diffraction, superconducting quantum interference device (SQUID) and thermogravimetric analyses (TGA). All of these three nanoparticles exhibited good crystallization performance, apparent superparamagnetism, and the saturation magnetization of MNP, SMNP, AMNP were 47.9 emu/g, 33.0 emu/g and 19.5 emu/g, respectively. The amino content was 5.66%. The AMNP was used to immobilize lipase, and the maximum adsorption capacity of the protein was 26.3 mg/g. The maximum maintained activity (88 percent) was achieved while the amount of immobilized lipase was 23.7 mg g1. Immobilization of enzyme on the magnetic nanoparticles can facilitate the isolation of reaction products from reaction mixture and thus lowers the cost of enzyme application.

Physiological Activities of Citrus Peel Extracts by Different Extraction Methods and Gamma Irradiation (추출방법과 감마선 조사에 따른 귤피 추출물 생리활성의 변화)

  • 강호진;조철훈;김덕진;서재수;변명우
    • Food Science and Preservation
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    • v.10 no.3
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    • pp.388-393
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    • 2003
  • Citrus peel extract was prepared using 70% ethanol solution by two extraction conditions (20C for 72 hours and 85C for 3 hours). The effect of gamma-irradiation on the changes of physiological activity also investigated at 0, 5, 10 and 20 kGy of absorbed doses. Color characteristics, DPPH radical scavenging, tyrosinase inhibition and nitrite scavenging activities of the extracts were measured at 41C for 30 days. Color values were different by extraction methods at the initial stage, which heat-extracted sample had lower L\^*/ - but higher a\^*/ - and b\^*/ -values than those extracted at room temperature. Irradiation changed color of the extract lighter by increasing Hunter color L\^*/ - and a\^*/ -values. DPPH radical scavenging, tyrosinase inhibition and nitrite scavenging activities were not affected by either extraction methods or irradiation but significantly reduced by storage time. Therefore, when the cost-effective extraction methods is selected, the citrus peel extracts, which is a major byproduct in citrus processing, could be used as a functional material in various applications.

Design and Performance Evaluation of DGPS Based on Optimal and Sub-optimal Reference Point (Optimal 및 Sub-optimal 기준점을 사용한 DGPS 설계 및 성능평가)

  • 고광섭;홍성래;정세모
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.2 no.3
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    • pp.343-352
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    • 1998
  • The use of DGPS enhances standalone GPS accuracy and removes common errors from two or more receivers viewing the same satellites. The design of DGPS system contains a precise reference point which is able to compute the common errors to update the pseudo range of users receivers. It should take a great time and cost to provide precise and sufficient accuracy of the reference point. That is, it is natural to measure the parameters from satellites with specific survey instrument system, and then obtain that by post processing. The purpose of the study is to examine the bounds of accuracy which resulted from RTCM correction data transmitted from a simply designed DGPS system. In the paper, We design and evaluate the DGPS system based m the surveyed reference point, and Sub-optimal no by a Standalone GPS as well. As a result of the study, it is shown that the designed system may be applied to the specific marine activity in civilian and military.

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