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A Study on the Stability of the Slope according to the Bedding of the Sedimentary Rocks (퇴적암지대의 층리 경사에 따른 비탈면 안정성 검토)

  • Seonggi Yu;Chanmook Chung;Dongwon Lee
    • The Journal of Engineering Geology
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    • v.34 no.2
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    • pp.193-206
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    • 2024
  • A standard slope stability analysis was undertaken for new railway sections, based on the slope of sedimentary rock layers and filling material (sand), to evaluate the stability of the cut-off slope in the section passing through a zone of sedimentary rock. The stability analysis was undertaken during the dry and rainy seasons, accounting for earthquake occurrence, based on slope design criteria. It was found that if the slope of the sedimentary rock formation was <10°, the effect on the safety rate of the cut-off slope was insignificant. Furthermore, a slope relief of 1:1.0 or more should be applied with slopes of 10~20°, and 1:1.2 or more with >20°. This study provides an important reference for evaluation of slope stability when railway and road construction is undertaken in areas of sedimentary rock.

A Study on Asset Valuation Method in Educational Facilities Delivered by BTL (BTL 사업 학교시설의 자산 가치평가 기법 연구)

  • Lee, Young-Joo;Soh, Ji-Yune;Lee, Jun-Bok;Han, Choong-Hee;Chae, Myung-Jin
    • Korean Journal of Construction Engineering and Management
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    • v.12 no.4
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    • pp.40-49
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    • 2011
  • A number of BTL projects for educational facilities have been augmented because of the increase of newtown development and deflationary policy of class size for learning efficiency. As the operation and maintenance costs rapidly increase, the budget for operation and maintenance is expected to be short. Therefore the asset management maximizing asset value is required to clarify the budget plan and distribution and provide a qualitatively high service. The main objective of this research is to establish asset valuation process in educational facilities delivered by BTL project. In order to meet the research objective, the asset valuation process is established by literature reviews, expert advice, and lessons learned from the developed countries. The developed process includes depreciation by internal accounting law, the core element of valuation, and asset valuation process. The results of the research will be help to offer the qualitatively high service and explain the standard of budget plan. It will assist commencing the asset management system.

Quantitative Proteogenomics and the Reconstruction of the Metabolic Pathway in Lactobacillus mucosae LM1

  • Pajarillo, Edward Alain B.;Kim, Sang Hoon;Lee, Ji-Yoon;Valeriano, Valerie Diane V.;Kang, Dae-Kyung
    • Food Science of Animal Resources
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    • v.35 no.5
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    • pp.692-702
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    • 2015
  • Lactobacillus mucosae is a natural resident of the gastrointestinal tract of humans and animals and a potential probiotic bacterium. To understand the global protein expression profile and metabolic features of L. mucosae LM1 in the early stationary phase, the QExactiveTM Hybrid Quadrupole-Orbitrap Mass Spectrometer was used. Characterization of the intracellular proteome identified 842 proteins, accounting for approximately 35% of the 2,404 protein-coding sequences in the complete genome of L. mucosae LM1. Proteome quantification using QExactiveTM Orbitrap MS detected 19 highly abundant proteins (> 1.0% of the intracellular proteome), including CysK (cysteine synthase, 5.41%) and EF-Tu (elongation factor Tu, 4.91%), which are involved in cell survival against environmental stresses. Metabolic pathway annotation of LM1 proteome using the Kyoto Encyclopedia of Genes and Genomes (KEGG) database showed that half of the proteins expressed are important for basic metabolic and biosynthetic processes, and the other half might be structurally important or involved in basic cellular processes. In addition, glycogen biosynthesis was activated in the early stationary phase, which is important for energy storage and maintenance. The proteogenomic data presented in this study provide a suitable reference to understand the protein expression pattern of lactobacilli in standard conditions

UK Case Study for Sustainable Forest Biomass Policy Development of South Korea (지속가능한 산림바이오매스 정책개발을 위한 영국사례 연구)

  • Lee, Seung-Rok;Han, Gyu-Seong
    • New & Renewable Energy
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    • v.17 no.1
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    • pp.50-60
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    • 2021
  • This study investigated the reference case in the UK where legality and sustainability were systematically established for forest biomass represented by wood pellets. The UK is the country that best utilizes the trade value of wood pellets based on sustainability, with bioenergy accounting for 31% of total renewable energy production. The UK imported wood pellet, estimated 8,697 thousand tons in 2019. The UK government has continuously improved the renewable generation policy system to ensure the sustainability of wood pellets. The weighted average greenhouse gas emissions of a UK biomass power plant that received a Renewable Obligation Certificate (ROC) in 2018-19 was 26.71 gCO2e/MJ. These power plants are expected to meet the upper limit of 72.2 gCO2e/MJ by 2025. To issue an ROC, the biomass power plant must demonstrate that 70% of its total biofuel usage is sustainable. The UK uses the Sustainable Biomass Program (SBP) certification system, which is gradually expanding to other European countries, to prove the sustainability of biomass energy fuels. Global wood pellet production with SBP certification in 2019 was 10.5 Mt. This trend has significant implications for introducing additional sustainability into the wood pellet policy of South Korea.

Tax Incentives for Job Creation and Employment Retention (고용창출과 고용유지를 위한 조세지원제도의 개선방안에 관한 연구)

  • Lee, Byung-San
    • Journal of Digital Convergence
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    • v.13 no.11
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    • pp.133-139
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    • 2015
  • This study is aimed at suggesting the establishment strategy of human resource development through the tax support system under the "Tax incentive limitation law" provided for job creation and employment retention, by which the improvement measurements for utility maximization. The study results are briefly summarized as follows: At first, It's necessary to permit overlapping deduction of the tax favor for encouragement of job creation and employment retention, i.e. tax exemption and tax credit, and to exclude a company from the object for the alternative minimum tax application for maximization of the effect on employment inducement. Secondly, It's necessary to establish tax exemption and a tax credit on the surplus of the minimum wage standard. At last, It's also necessary to abolish, or expand the sunset period of tax support on a large scale to enhance the predictability of human resources management. These discussion are made through the convergence both employment policies and tax laws.

Estimating the Burden of Cancers Attributable to Smoking Using Disability Adjusted Life Years in Indonesia

  • Kristina, Susi Ari;Endarti, Dwi;Sendjaya, Natalia;Pramestuty, Octy
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.3
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    • pp.1577-1581
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    • 2016
  • Tobacco use is a well-established risk factor for many types of cancers. Recent data on selected cancer incidence and mortality related to smoking in the Indonesian population are provided in this study. Morbidity and mortality data were derived from GLOBOCAN 2012 and the population attributable fraction (PAF) was estimated using the standard methodology developed by the World Health Organization. Using these data, we calculated disability adjusted life year (DALY) values for smoking-related cancer. The DALY was estimated by summation of the years lived with disability (YLD) and years life lost due to premature death (YLL). The cancer cases related to smoking in Indonesia numbered 45,132, accounting for 35,580 cancer deaths. The morbidity and mortality of lung cancer can be considered as the highest priority in both men and women. Furthermore the greatest YLD due to smoking in Indonesian men and women were from pancreas and lung cancers. For YLL among men, the highest years lost were from lung and liver cancers. On the other hand, among women lung oral cavity and lip were most important. Based on the DALY indicator, burden priorities for Indonesian men were lung cancer (298,980), liver cancer (60,367), and nasopharynx (46,185), while among Indonesian women they were lung cancer (34,119), cervix uteri (9,213) and pancreas cancer (5,433). In total, Indonesian burden of cancers attributed to smoking was 638,682 DALY. This study provides evidence about the burden of cancers caused by smoking as a rational basis for initiating national tobacco control policies in Indonesia.

The Estimation of Greenhouse Gas Reductions from Renewable Energy (Photovoltaic, Wind Power) : A Case Study in Korea (재생에너지(태양광, 풍력) 기술의 온실가스 감축산정: 국내를 대상으로)

  • Jung, Jaehyung;Kim, Kiman
    • Journal of Environmental Science International
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    • v.29 no.7
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    • pp.729-737
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    • 2020
  • This study estimates the greenhouse gas (GHG) emissions reduction resulting from photovoltaic and wind power technologies using a bottom-up approach for an indirect emission source (scope 2) in South Korea. To estimate GHG reductions from photovoltaic and wind power activities under standard operating conditions, methodologies are derived from the 2006 IPCC guidelines for national GHG inventories and the guidelines for local government greenhouse inventories of Korea published in 2016. Indirect emission factors for electricity are obtained from the 2011 Korea Power Exchange. The total annual GHG reduction from photovoltaic power (23,000 tons CO2eq) and wind power (30,000 tons CO2eq) was estimated to be 53,000 tons CO2eq. The estimation of individual GHGs showed that the largest component is carbon dioxide, accounting for up to 99% of the total GHG. The results of estimation from photovoltaic and wind power were 63.60% and 80.22% of installed capacity, respectively. The annual average GHG reductions from photovoltaic and wind power per year per unit installed capacity (MW) were estimated as 549 tons CO2eq/yr·MW and 647 tons CO2eq/yr·MW, respectively. Finally, the results showed that the level of GHG reduction per year per installed capacity of photovoltaic and wind power is 62% and 42% compared to the CDM project, respectively.

A Study on the Correlation among Family Functioning, Self-concept and Health Promotion Behavior of Elementary School Students (초등학생의 가족기능, 자아개념 및 건강증진행위와의 관계)

  • Kim, Eun-Hee;Kim, Tae-Kyung;Kwon, Su-Ja
    • Research in Community and Public Health Nursing
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    • v.15 no.4
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    • pp.608-617
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    • 2004
  • Purpose: This study was to investigate family functioning, self-concept and health promotion behavior of elementary school students and to find out the correlation among these variables. Method: The subjects were 277 students who participated voluntarily in the questionnaire. The instrument used in this study was family APGAR, self-concept and health promotion behavior tool. The data were collected from May 18th to 21st, 2004 with a self-administered questionnaire, using frequency, percentage, t-test, ANOVA, Pearson correlation coefficient and stepwise multiple regression with SPSS 10.0 win. Results: 1) The mean score of health promotion behavior by general characteristics was significant in educational status of mother (F=5.352, p=0.005), living standard (F=9.646, p=0.000) and perceived health status (F=8.349, p=0.000). 2) The mean score of family functioning was 3.57 (5 point scale), self-concept was 3.47 (5 point scale) and health promotion behavior was 3.67 (5 point scale). 3) In the relationship between family functioning and self-concept was correlated (r=.547), family functioning and health promotion behavior was correlated (r=.518) and self-concept and health promotion behavior was correlated (r=.670). 4) The most influencing variable was self-concept, accounting for 43% in stepwise multiple regression. A combination of self-concept, family functioning and perceived health status explained 47% of the variance for health promoting behavior. Conclusion: Considering the results above, we can recognize that there are close relations among the family functioning, self-concept and health promotion behavior. Therefore, it is necessary to elevate the level of self-concept and family functioning in order to get health promotion behavior of the elementary school students.

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Gust durations, gust factors and gust response factors in wind codes and standards

  • Holmes, John D.;Allsop, Andrew C.;Ginger, John D.
    • Wind and Structures
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    • v.19 no.3
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    • pp.339-352
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    • 2014
  • This paper discusses the appropriate duration for basic gust wind speeds in wind loading codes and standards, and in wind engineering generally. Although various proposed definitions are discussed, the 'moving average' gust duration has been widely accepted internationally. The commonly-specified gust duration of 3-seconds, however, is shown to have a significant effect on the high-frequency end of the spectrum of turbulence, and may not be ideally suited for wind engineering purposes. The effective gust durations measured by commonly-used anemometer types are discussed; these are typically considerably shorter than the 'standard' duration of 3 seconds. Using stationary random process theory, the paper gives expected peak factors, $g_u$, as a function of the non-dimensional parameter ($T/{\tau}$), where T is the sample, or reference, time, and ${\tau}$ is the gust duration, and a non-dimensional mean wind speed, $\bar{U}.T/L_u$, where $\bar{U}$ is a mean wind speed, and $L_u$ is the integral length scale of turbulence. The commonly-used Durst relationship, relating gusts of various durations, is shown to correspond to a particular value of turbulence intensity $I_u$, of 16.5%, and is therefore applicable to particular terrain and height situations, and hence should not be applied universally. The effective frontal areas associated with peak gusts of various durations are discussed; this indicates that a gust of 3 seconds has an equivalent frontal area equal to that of a tall building. Finally a generalized gust response factor format, accounting for fluctuating and resonant along-wind loading of structures, applicable to any code is presented.

Brands and Competing Factors in Purchasing Hand Phones in the Malaysian Market

  • Rahman, Mahfuzur;Ismail, Yusof;Albaity, Mohamed;Isa, Che Ruhana
    • The Journal of Asian Finance, Economics and Business
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    • v.4 no.2
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    • pp.75-80
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    • 2017
  • Hand phones are standard paraphernalia among university students. Factors that motivate them to own the gadget would be of interest to both the students as well as marketers. Hand phone usage is an unexamined field in academic literature, this exploratory study attempts to investigate student purchasing motives in cellular phone markets. It also intends to know the student's satisfaction with the different services and its future impact on socio economic changes. In this study, undergraduates (n=336) were requested to specify their purchase criteria of hand phone. The instrument used in the study to collect feedback from the respondents contains a combination of open-ended and scaled questions, and some background demographics. The study employed content analysis, Pearson's correlation, and t-tests as the primary tools to analyze the responses. Results show that brand was rated as the most important factor in student purchase decisions. Other factors, arranged in decreasing order of importance comprise price, product quality, features, durability, availability, promotion, and post purchase service. Brand and price correlated significantly. It is also observed that there is very little difference regarding preference between brand and price in purchasing a hand phone. Marketers may formulate suitable strategies out of the findings to promote hand phones to university undergraduates in Malaysia by emphasizing at brands and price.