• Title/Summary/Keyword: Impact Factor

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Development of a methodology for analysing and quantifying the impact of delay factors affecting construction projects

  • Shebob, Abdulhamid;Dawood, Nashwan;Shah, Raj K.
    • Journal of Construction Engineering and Project Management
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    • v.2 no.3
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    • pp.17-29
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    • 2012
  • Delays are one of the biggest problems facing by the construction industry and they have significant financial and social impact in construction projects. The paper presents a framework of Delay Analysis System (DAS) with the aim of analysing the impact of delay factors in Libyan construction projects. The system has designed by integrating the possible delay factors, critical activities of a project using@risk simulator. A case study of building project was demonstrated to identify the impact of delays and the sensitivity of delay factor. The case study result showed that the project might be delayed by 97 to 103 days in comparison to the planned duration. The developed DAS is a tool for analysing and identify the impacts of delay factors and assist to construction manager to take necessary measure in reducing the delay impact. The paper provides a methodology for analysing the possible delay impact in a construction project and informing to construction manager in advance of the possible delay factors.

Experimental Evaluation of Percussion Performance for Rock-Drill Drifter

  • Seo, Jaho;Park, Jin-Sun;Kim, Heungsub;Noh, Dae Kyung
    • Journal of Biosystems Engineering
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    • v.40 no.1
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    • pp.1-9
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    • 2015
  • Purpose: The objective of this study was to understand the operating mechanism of the rock-drill drifter, to explain how to setup an experimental test system and measure the strain of the drifter's rod, and to evaluate the drifter's performance with respect to the impact energy and blow frequency. Methods: The structure of the rock-drill drifter and its operating principle regarding the impact process were analyzed. Static calibration was carried out to calculate the correction factor using a drifter rod as the first step of the experimental test. The impact energy and blow frequency were then calculated based on strain measurements of the drifter's rod. Results: Experimental results showed that the tested drifter elicited a blow frequency of 3330 BPM (Blows Per Minute) and generated impact energy of 170 J/blow. This indicates that the drifter elicits a higher percussion speed and results in a lower impact energy compared to the hydraulic breaker at the same input power. Conclusions: The study proposed methodologies that deal with the experimental setup and the evaluation of the performance of the rock-drill drifter. These methodologies can be extensively used for validating and improving the percussion performance of the drilling equipment.

An Empirical Research of Gender Impact on Customer Behaviour towards Mobile Entertainment Services in India

  • Satish Kumar, G.N.
    • Asia-Pacific Journal of Business
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    • v.3 no.2
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    • pp.8-15
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    • 2012
  • Mobile Entertainment is the new era in mobile communication. Mobile Entertainment service is a combination of games, music, videos, chatting and telecommunication which has created a wide market in India. There is a variation between male and female customers towards Mobile Entertainment services. This study is aimed at analyzing gender impact of attitude, subjective norm, perceived behaviour control intention and behaviour towards mobile entertainment services. The Theory of planned Behaviour (TPB) provided a framework. Total 566 male and 376 female mobile users of different age groups participated in the research. The data analysis was conducted in three-stages. First, reliability tests were performed. Upon satisfactory results, confirmatory factor analysis (CFA) is used to analysis convergent, concurrent and discriminant validity of the model. Once the model was validated Structural Equation Model (SEM) Multi-group analysis is used to find the impact of gender behaviour towards Mobile entertainment services. The results of the study confirmed that the model is viable in predicting variation in gender impact on mobile entertainment services. The findings have revealed that attitude, perceived behaviour control and intention has a significant impact on behaviour to use mobile entertainment but subjective norm has no significant impact on behaviour to use mobile entertainment.

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A Study of Assessment Method for Site Feasibility of Municipal Solid Waste Incineration (생활폐기물소각장의 입지타당성 평가기법)

  • Lee, Mu-Choon
    • Journal of Environmental Impact Assessment
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    • v.6 no.2
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    • pp.123-135
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    • 1997
  • The solid waste incineration facilities which cause environmental pollution. And those are some kind of loathing facilities for residents who do not want it. This problem could be solved by location feasibility study. The purpose of location feasibility study was to determine one site out of three candidate sites. This study which was done by the law, environmental and economic factor was considered for optimum site selection. Comparative evaluation among the candidate sites was done by ordinal scale and thus the optimum site was selected.

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A Study on the Floor Impact Sound Insulation Characteristics of Floor Coverings (바닥마감재에 의한 바닥충격음 차음특성 연구)

  • Gi, No-Gab;Kwon, Hyun-Jong;Song, Min-Jeong;Kim, Sun-Woo
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2002.11a
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    • pp.368.2-368
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    • 2002
  • It is increasing the interest on the comfortable dwelling environment, while sound insulation performance of materials and elements used in building is falling down as they become thicker and lighter Therefore, sound insulation performance in building has become the most important factor determining the level of housing, especially for apartment that has common wall and floor with next neighbors. (omitted)

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A Study Using Nondestructive Tests Based on Stress Waves for the Estimation of Concrete Compressive Strength (응력파 기반 비파괴 검사법에 의한 콘크리트 강도 추정에 관한 연구)

  • Joo, Hyun-Jee;Cho, Young-Sang
    • Proceedings of the Korea Concrete Institute Conference
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    • 2004.11a
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    • pp.675-678
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    • 2004
  • The importance of predicting concrete compressive strength of in concrete structures is gradually increasing in construction industry. The estimation of concrete compressive strength of is a critical factor of the construction schedule and quality control. This study was performed to examine the relationship between concrete compressive strength and stress wave velocity which was determined by the impact echo method and SASW method.

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Impact on self-satisfaction of shopping tendencies and purchasing behaviors for luxury goods (명품쇼핑성향과 구매행동이 자기만족도에 미치는 영향)

  • Lee, Jeong-Min;Park, Sook-Hyun;Lee, Kyung-Lim
    • The Research Journal of the Costume Culture
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    • v.25 no.1
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    • pp.16-31
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    • 2017
  • This paper aims to identify the impact on self-satisfaction of shopping tendencies and purchase behaviors for luxury goods. The research was conducted by survey method using questionnaires. The subjects of this study were female consumers from 20 to years old with a high purchasing capability for luxury goods. Using the statistics program SPSS 21.0, factor analysis, reliability analysis, one-way ANOVA, and multiple-regression analysis were executed. The analysis results are summarized below. For shopping tendency depending on ages, pleasure pursuit tendency showed insignificant difference in 40~50s, but significant difference in 20~30s. For the self-satisfaction, the interpersonal satisfaction showed the difference by age group, which was much higher in the respondents in 30~50s than those in 20s. Individuality pursuit tendency and rational shopping tendency had impact on self-satisfaction and rational shopping tendency on interpersonal satisfaction in 20s. Pleasure pursuit tendency and rational shopping tendency had impact on self-satisfaction and interpersonal satisfaction and pleasure pursuit tendency on the economic satisfaction in 30s. Pleasure pursuit tendency had impact on self-satisfaction and economic satisfaction and rational satisfaction on interpersonal satisfaction in 40s. Pleasure pursuit tendency and rational shopping tendency had impact on self-satisfaction and interpersonal satisfaction in 50s. High quality had impact on self-satisfaction and economic satisfaction and practicality on interpersonal satisfaction in 20s. High quality had impact on self-satisfaction and interpersonal satisfaction in 30s. High quality had impact on interpersonal satisfaction in 40s. High quality had impact on all elements of self-satisfaction for the respondents in 50s, practicality had negative impact on interpersonal satisfaction.

New APJCP Impact Factor for 2012 is 1.271 - Time to Make a Major Effort to Break Through the 2.0 Barrier

  • Moore, Malcolm A.;Lim, Min-Kyung;Huang, Xin-En
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.6
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    • pp.3377-3378
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    • 2013
  • The APJCP Impact Factor for 2012 is 1.271, returning from 0.659 for 2011 (1.240 for 2010 and 1.108 for 2009). For an Asian Pacific journal publishing over 100 papers a month from countries with very varied resources it is heartening and we thank all those who continued to submit papers and cite references in the APJCP through our difficult period. However, we still have very much room for improvement. As Chief Editors it is our shared responsibility to act for the benefit of the cancer control research community who utilize the journal in our region of over four billion people and provide a prestigious forum for publication of research findings which can be freely shared by all. The motivation for the APOCP/APJCP has never been financial profit but a firm financial base is nevertheless essential. Although we have kind support from the Korean National Cancer Center for our Managing Editor and the website, our ability to maintain our Chinese and Thai offices is totally dependent on the processing charges paid by the authors. In order to expand our staff to cope with increased submissions and provide greater assistance in ensuring comprehensive reference coverage and dissemination of findings published in the APJCP to the worldwide research community, a joint decision has been made to increase formatting charges by 50% from July. We ask for author understanding. In addition, we appeal to scientists to positively consider our requests to make their reference lists as comprehensive as possible, including papers from the APJCP where appropriate. The future of the journal and the APOCP is largely in your own hands.

A Study on the Satisfaction of the Store Attribute, Intention of Revisit and Recommendation on the Clothing Consumer (의류 소비자의 점포 속성 만족도, 재방문 및 추천 의사에 관한 연구)

  • Yang, Lee-Na
    • The Research Journal of the Costume Culture
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    • v.17 no.3
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    • pp.367-382
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    • 2009
  • The aim of the current study was to investigate the impact of store attribute satisfaction on intentions of revisit and recommendation among clothing consumers. The data were collected from 319 consumers through survey and frequency analysis, reliability analysis, factor analysis, and multiple regression analysis were used to obtain results. The findings were as follows: 1. From factor analysis, seven factors were distracted: Fact 1(brand and price), Fact 2(store's facility and environment), Fact 3(product), Fact 4(transportation convenience and access), Fact 5(selling and advertisement), Fact 6(store's atmosphere), and Fact 7(salesman's service). 2. Four factors had statistically significant influence on overall satisfaction of clothing consumers. The most influential factor was Fact 2(store's facility and environment) and Fact 5(selling and advertisement), Fact 1(brand and price), and Fact 4(transportation convenience and access) showed their effects on overall satisfaction in an hierarchical rank-order following Fact 2. 3. Four factors such as Fact 2(store's facility and environment), Fact 1(brand and price), Fact 4(transportation convenience and access) and Fact 5(selling and advertisement) in an hierarchical rank-order from Fact 1 had statistically significant impact on intentions of revisit. 4. Six factors such as Fact 1(brand and price), Fact 2(store's facility and environment), Fact 3(product), Fact 5(selling and advertisement), Fact 6(store's atmosphere), and Fact 7(salesman's service) in an hierarchical rank-order from Fact 1 had statistically significant influence on the intention of recommendation. 5. The results further showed that among seven factors, Fact 1(brand and price), 'Fact 2(store's facility and environment), and Fact 5(selling and advertisement) had impact on both the intention of revisit and the intention of recommendation.

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Bearing Capacity of Driven H-Piles in Embankment (성토지반에 타입된 H형강 말뚝의 지지거동)

  • 박영호;정경자;김성환;유성근;이재혁;박종면
    • Proceedings of the Korean Geotechical Society Conference
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    • 2000.03b
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    • pp.173-182
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    • 2000
  • To find axial and lateral responses of impact-driven H piles in embankment(SM), the H piles are instrumented with electric strain gages, dynamic load test is performed during driving, and then the damage of strain gages is checked simultaneously. Axially and laterally static load tests are performed on the same piles after one to nine days as well. Then load-settlement behavior is measured. Furthermore, to find the set-up effect in H pile, No. 4, 16, 26, and R6 piles are restriked about 1, 2, and 14 days after driving. As results, ram height and pile capacity obtained from impact driving control method become 80cm and 210.3∼242.3ton, respectively. At 15 days after driving, allowable bearing capacity by CAPWAP analysis, which 2.5 of the factor of safety is applied for ultimate bearing capacity, increases 10.8%. Ultimate bearing capacity obtained from axially static load test is 306∼338ton. This capacity is 68.5∼75.7% at yield force of pile material and is 4∼4.5 times of design load. Allowable bearing capacity using 2 of the factor of safety is 153∼169ton. Initial stiffness response of the pile is 27.5ton/mm. As the lateral load increases, the horizontal load-settlement behaves linearly to which the lateral load reaches up to 17ton. This reason is filled with sand in the cavity formed between flange and web during pile driving. As the result of reading with electric strain gages, flange material of pile is yielded at 19ton in horizontal load. Thus allowable load of this pile material is 9.5ton when the factor of safety is 2.0. Allowable lateral displacement of this pile corresponding to this load is 23∼36mm in embankment.

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