• 제목/요약/키워드: stock assessment

검색결과 192건 처리시간 0.026초

Prediction of City-Scale Building Energy and Emissions: Toward Sustainable Cities

  • KIM, Dong-Soo;Srinivasan, Ravi S.
    • International conference on construction engineering and project management
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    • The 6th International Conference on Construction Engineering and Project Management
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    • pp.723-727
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    • 2015
  • Building energy use estimation relies on building characteristics, its energy systems, occupants, and weather. Energy estimation of new buildings is considerably an easy task when compared to modeling existing buildings as they require calibration with actual data. Particularly, when energy estimation of existing building stock is warranted at a city-scale, the problem is exacerbated owing to lack of construction drawings and other engineering specifications. However, as collection of buildings and other infrastructure constitute cities, such predictions are a necessary component of developing and maintaining sustainable cities. This paper uses Artificial Neural Network techniques to predict electricity consumption for residential buildings situated in the City of Gainesville, Florida. With the use of 32,813 samples of data vectors that comprise of building floor area, built year, number of stories, and range of monthly energy consumption, this paper extends the prediction to environmental impact assessment of electricity usage at the urban-scale. Among others, one of the applications of the proposed model discussed in this paper is the study of urban scale Life Cycle Assessment, and other decisions related to creating sustainable cities.

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A Study on the RAMS Activities and Practices for assuring Safety of the Centralized Traffic Control System of Urban Railway (도시철도관제시스템 안전성 확보를 위한 RAMS 활동 및 그 적용사례에 관한 연구)

  • Choi, Yo Chul
    • Journal of the Korean Society of Systems Engineering
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    • 제10권2호
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    • pp.43-50
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    • 2014
  • The Centralized Traffic Control(CTC) System of Urban Railway is an element(subsystem) of the Urban Railway system to aim safety operation and efficient management of rolling stock in accordance with a train scheduling program in train operation ways. That's why the CTC System must be developed considering systematic and safety-guaranteed methods such as RAMS(Reliability, Availability, Maintainability, and Safety) refereed to IEC standards. The CTC System is consists of rolling stock, signaling, power supply, communication, and mechanical equipment and preforms control and remote monitoring functions. The technical activities considering safety process are very important at such an early stage of development in a railway project. This paper introduces RAMS activities and an independent safety assessment by $3^{rd}$ Party focused on a safety applied to a development of the CTC system of Urban Railway and proposes the experiences as well practices.

Islamic Banking Ranking Efficiency Based on a Decision Tree in Iran

  • Salehi, Mahdi;Khaksar, Jalil;Torabi, Elahe
    • Asian Journal of Business Environment
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    • 제4권2호
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    • pp.5-11
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    • 2014
  • Purpose - This study attempts to examine Islamic banking practices in Iran based on new scientific methods. Design, methodology, and approach - The study used financial ratios demonstrating healthy or non-healthy banks to assess the financial health of banks listed on the Tehran Stock Exchange. The assessment of these ratios with a decision tree as a non-parametric method for modeling is recommended to present this model. Information about the financial health of banks could affect the decisions of different groups of banks' financial report users including shareholders, auditors, stock exchanges, central banks, and so on. Results - The results of the study show that a decision tree is a strong approach for classifying Islamic banks in Iran. Conclusions - To date, several studies have been conducted in various countries on the topic of this study. Considering the importance of Islamic banking, this is one of the first studies in Iran the outcomes of the study may prove helpful to the Iranian economy.

Evaluation of Islamic Banking Efficiency in Iran

  • Khaksar, Jalil;Salehi, Mahdi;Torabi, Elahe
    • East Asian Journal of Business Economics (EAJBE)
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    • 제2권2호
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    • pp.37-47
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    • 2014
  • Purpose - In this study, it is attempted to examine the Islamic banking practice in Iran based on new scientific methods. Design/methodology/approach- It is used the financial ratios demonstrating healthy or non-healthy of banks to assess the financial health of listed banks in Tehran Stock Exchange. The assessment of these ratios with use of decision tree as a non-parametric method for modeling is recommended for presenting this model. Information about the financial health of banks could be effective on the decisions of different groups of banks' financial reports users, including shareholders, auditors, stock exchange, central bank and etc. Findings - the results of the study show that Decision Tree is strong approach in order to classifying Islamic banks in Iran. Originality/value- So far, several studies have been conducted in various countries on the topic of this study. Considering the importance Islamic banking, it is almost the first study in Iran and the outcomes of the study may helpful to Iranian economy.

Crash Simulation of Rolling Stock (철도차량 충돌 시뮬레이션)

  • 김필환;이장욱;김진태;김창수
    • Proceedings of the KSR Conference
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    • 한국철도학회 1998년도 창립기념 춘계학술대회 논문집
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    • pp.401-407
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    • 1998
  • Recently, as the railway vehicles become speedy and massive, the collision is being regarded as an important factor for the assessment of safety for passenger. And the study of collision is being in progress more actively in advanced nations. In this study, the collision analysis is performed by using non-linear dynamic finite element program PAM-CRASH. The carbody used in analysis is made of Aluminum AL6005A to realize lightweight, and designed and manufactured by DHI (Daewoo Heavy Industry) lately. For the accuracy of the result in the practical collision, the experiment of material properties has been performed. The result of the analysis shows the underframe of rolling stock is the most important part as a collision energy absorbing structure. Further study is needed for optimal design which enables the carbody shell structure to disperse absorbing energy adequately.

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The Structural Strength Assessment of Corroded Electric Rail Car Body Structure by FEM (유한요소법에 의한 부식을 고려한 전동차 차체의 강도평가)

  • Kim Sun-Yong;Goo Byeong-Choon;Lim Choong-hwan
    • Proceedings of the KSR Conference
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    • 한국철도학회 2005년도 추계학술대회 논문집
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    • pp.350-355
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    • 2005
  • All the facility, the structure and the rolling stock have limited life so after starting use, we must decide disuse or use when it exeeds the lifetime. Currently the subway which exeeds the lifetime appeared in our country. Structural members of rolling stock structures were occurred corrosion after passage of time and It gives a many effect in the structure strength. In this study, it accomplished a structural analysis which use FEM for the No.2 subway line which operated currently, and it investigated the structural strength change which it follows with dimension change of structural members due to corrosion

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A comparative study on rapid seismic risk prioritization for reinforced concrete buildings in Antalya, Türkiye

  • Engin Kepenek;Kasim A. Korkmaz;Ziya Gencel
    • Computers and Concrete
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    • 제31권3호
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    • pp.185-195
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    • 2023
  • Antalya is located south part of minor Asia, one of the biggest cities in Türkiye. As a result of population growth and vast migration to Antalya, many parts of the city that were not suitable for construction due to its geological conditions have become urban areas, and most of these urban areas are full of poorly engineered buildings. Poor engineering has been combined with unplanned urbanization, that causes utter vulnerability to disasters in Antalya. When an earthquake-prone city, Antalya faces with an earthquake risk, fear arises in society. To overcome this problem, it has become necessary to investigate the building stock, expressed in hundreds of thousands, in a fast and reliable way and then perform an urban transformation to create the perception of structural safety. However, the excessive building stock, labor, and economic problems made the implementation stage challenging and revealed the necessity of finding alternative solutions in the field. The present study presents a novel approach for assessment and model based on a rapid visual inspection method to transform areas under earthquake risk in Türkiye. The approach aimed to rank the interventions for decision-making mechanisms by making comparisons in the scale hierarchy. In the present study, to investigate the proposed approach, over 26,000 buildings were examined in Antalya, which is the fifth largest city in Türkiye that has a population of over 2.5 Million. In the results of the study, the risk classification was defined in the framework of building, block, street, neighborhood, and district scales.

Rapid seismic performance assessment method for one story hinged precast buildings

  • Palanci, Mehmet;Senel, Sevket Murat
    • Structural Engineering and Mechanics
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    • 제48권2호
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    • pp.257-274
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    • 2013
  • In this study, seismic performance of one story hinged precast buildings, which represents the majority of existing lightweight industrial building stock of Turkey, was assessed. A lot of precast buildings, constructed in one of the important seismic zones of western Turkey, were investigated and building inventories were prepared. By this method, structural properties of inventory buildings and damaged precast buildings in recent earthquakes were compared. Damage estimations based on nonlinear analysis methods have shown that estimated damage levels of inventory buildings and observed damage levels in recent earthquakes are similar. Accuracy of damage estimation study and the simplicity of the one story precast building models implied that rapid seismic performance assessment method for these buildings can be developed. In this assessment method, capacity curves and vibration periods of precast buildings were calculated by using structural properties of precast buildings. The proposed assessment method was applied to inventory buildings by using two different seismic demand scenarios which reflect moderate and soft soil conditions. Comparison of detailed analysis and rapid assessment methods have indicated that reliable seismic performance estimations can be performed by using proposed method. It is also observed that distribution of damage estimations is compatible in both scenarios.

The Express-Assessment of Main Monetary Indicators of Russia and the Countries of CIS

  • Vyborova, Elena Nikolaevna
    • East Asian Journal of Business Economics (EAJBE)
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    • 제6권1호
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    • pp.1-31
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    • 2018
  • Purpose - This study is to analyze indicators characterizing the monetary turnover and its determining factors. Also this paper looked at the evolution of monetary aggregates of the Russian Federation, Australian, Sweden, Denmark, countries of CIS at the present stage of development and in the historical context. Research design, data, and methodology - The scale of research on Russia: to be analyzed the amount of data from the 2011 by 2016. In the historical context of the estimated data in the 1900-2011. On Belarus - the 2007-2017, on Tajikistan - the 2000 - 2017, on Kazakhstan - the 2000-2017, on Kyrgyzstan - the 2000-2017, on Australian - the 1959-2017, on Sweden - the 2009-2017, on Denmark - the 1999-2017. Results - Hypothesis 1. In Russian Federation the monetary stock has the steady tendency to growth. The dynamics of money supply in Russia is largely determined by historical events. Hypothesis 2. The dynamics of money supply the leading countries-partners has the tendency to grow. The monetary amount of countries-partners are analyzed is largely determined by external debt, GDP, the exports, the imports, the international reserves. Conclusions - The dynamics of monetary stock of Russia is determined by the historical events in many respects. The Russian Federation maintains a steady and the liquid economic position in the case of considerable amount of monetary stock and the high degree of its surplus. In most of the countries studied, the monetary supply has a significant volume exceeding the needs of the economy. If the distribution of monetary mass is adequate and there is a vertical of financial control, this will not have a negative impact on the country's economic stability and the development.

Genetic stock identification of Chum salmon in the Pacific Rim (북태평양 서식 연어의 계군 분석)

  • Yoon, Moongeun;Abe, Syuiti;Jeong, Hee-Je
    • Proceedings of KOSOMES biannual meeting
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    • 해양환경안전학회 2017년도 공동학술발표회
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    • pp.82-82
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    • 2017
  • Chum salmon, Oncorhynchus keta, has received considerable attention in recent years for population genetic studies due to its broad geographic distribution and high commercial importance in North Pacific fisheries. The Bering Sea and North Pacific Ocean provide major feeding habitats for various salmon stocks originating from Japan, Russia and North America. Chum salmon are a dominant pelagic fish in the Bering Sea during summer and their numbers fall when they moved in coastal areas to spawn. Population genetic data for chum salmon that can serve as a baseline for stock identification studies are scarce. In this review, we describe recently developed molecular markers and discuss their use in the study of genetic population structure of chum salmon in the Pacific Rim. In addition, we review previous genetic studies focused on the assessment of stock compositions in mixed chum salmon aggregations in the Bering Sea and North Pacific Ocean.

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