scholarly journals Delay model for Engineering Procurement Construction (EPC): a case of Liquefied Natural Gas (LNG) projects in Indonesia

2019 ◽  
Vol 270 ◽  
pp. 05010
Author(s):  
Peter F. Kaming ◽  
Ambrosius Koesmargono ◽  
Bimo Wahyu Aji
Keyword(s):  
Natural Gas ◽  
Structural Equation ◽  
Large Scale ◽  
Human Resources Management ◽  
Sem Analysis ◽  
Liquefied Natural Gas ◽  
Survey Method ◽  
Delay Model ◽  
Factors Analysis ◽  
Plant Equipment

Development of Liquefied Natural Gas (LNG) projects in Indonesia mostly utilized Engineering Procurement Construction) EPC as type of contract. The contract is particularly applied in large-scale project such as LNG because it needed to be realized with comprehensively planning and to be on time, and on budget for the benefit for all stakeholders. In maximizing the utilization of the resources, LNG plant project depended on detailed work plans and tightly work schedule. This research aims at analyzing factors influencing causes of project delay in construction LNG projects. Data were collected using survey method by mean of distributing questionnaire to respondent that representing skilled staffs of the contractor LNG construction. Grouping variables were carried out using factors analysis, and the generated factors and delay of the projects then were analyzed their relationship using Structural Equation Modelling (SEM). Results of this study generated seven factors that influenced the delay of the EPC contract in LNG projects. The factors are: Human Resources; Management; Material; External; Plant Equipment; Method; Quality. From the result of SEM analysis it generated a model for analyzing the delay of the EPC for LNG projects in Indonesia.

Large-scale liquefied natural gas ships

2020 ◽  
Vol 7 (3) ◽  
pp. 461-465
Author(s):  
Danping Lou ◽  
Yan Li
Keyword(s):  
Natural Gas ◽  
Large Scale ◽  
Liquefied Natural Gas

SYSTEMATIC INNOVATION CAPABILITY: EVIDENCE FROM CASE STUDIES AND A LARGE SURVEY

2017 ◽  
Vol 21 (07) ◽  
pp. 1750058 ◽  
Author(s):  
DANNY SAMSON ◽  
MARIANNE GLOET ◽  
PRAKASH SINGH
Keyword(s):  
Case Studies ◽  
Structural Equation ◽  
Large Scale ◽  
Process Management ◽  
Human Resources Management ◽  
Innovation Process ◽  
Performance Outcomes ◽  
Extensive Literature ◽  
Innovation Capability ◽  
Management Culture

This study involved a series of case studies that were combined with an extensive literature review to frame and construct a large-scale survey, measuring systematic innovation capability, and innovation performance (IP). Previous literature is quite fragmented with little inherent cohesion. Relatively few truly holistic studies have been done, especially in a large-scale multi-industry context. The case studies and structural equation modelling (SEM) in the present study validated important predictor variables of IP, including leadership and innovation strategy, customer focus and innovation process management, culture and human resources management, knowledge and technology management. The SEM determined that systematic innovation capability is a valid concept and can be measured as such, relating strongly to IP and business performance. Based on deep case studies and our large sample, innovation capability was demonstrated to be a holistic concept comprising a number of core elements that act together to strongly determine performance outcomes.

End-Users’ Acceptance of Biometrics Authentication to Secure E-Commerce within the Context of Saudi Culture

2013 ◽  
pp. 1356-1376
Author(s):  
Fahad AL Harby ◽  
Rami Qahwaji ◽  
Mumtaz Kamala
Keyword(s):  
Structural Equation ◽  
Large Scale ◽  
Sem Analysis ◽  
Equation Modeling ◽  
Factors Affecting ◽  
Moderating Variables ◽  
Use Of Technology ◽  
Moderating Factors ◽  
Education Levels ◽  
Scale Experiment

This book study presents recent findings from an ongoing cross-cultural study exploring the acceptance of a new security method based on biometrics authentication systems to be applied to an e-commerce application within the context of Saudi culture. The aim of the study was to explore factors affecting users’ acceptance of biometrics authentication system. The authors conducted a large scale experiment of 306 Saudis using a login fingerprint system and examined a proposed conceptual framework based on the Unified Theory of Acceptance and Use of Technology (UTAUT) with moderating variables. The findings from Structural Equation Modeling (SEM) analysis indicate that education levels are significant moderating factors, while gender and age do not record as significant. The findings of this study propose the need to take cultural background and disposition into consideration when applying biometrics technology.

Boil-Off Gas Formation inside Large Scale Liquefied Natural Gas (LNG) Tank Based on Specific Parameters

2012 ◽  
Vol 229-231 ◽  
pp. 690-694 ◽  
Author(s):  
Mohamad Shukri Zakaria ◽  
Kahar Osman ◽  
Md. Nor Musa
Keyword(s):  
Natural Gas ◽  
Large Scale ◽  
Seawater Temperature ◽  
Three Dimensional ◽  
Ambient Air ◽  
Calculation Model ◽  
Liquefied Natural Gas ◽  
Three Dimensional Model ◽  
Ambient Seawater ◽  
Lng Tank

Liquefied Natural Gas (LNG) fleets are coasting with various condition and behavior. These variable leads to different type of LNG fleets build every year with unavoidable generated Boil-off Gas (BOG). Estimation of BOG generated inside LNG tank play significant role in determines the ship specification and management method of BOG including venting, propulsion or requalification. Hence, in the present study, the right choices of boundary condition and parameter have been implementing in order to have good estimation amount of BOG evaporates for specific LNG tank. Three dimensional model of cargo with capacity 160000 m3 LNG carrier are simulate using ANSYS Fluent with specific ambient air temperature of 5oC and ambient seawater temperature of 0oC have been chosen as a calculation case, gain the total heat transfer rate and Boil-off Rate (BOR). The result shows that the calculation model and simulation are feasible with typical LNG fleet specification and International Marine Organization (IMO) standard.

ASSESSING THE POTENTIAL OF KEY EXPORTERS IN THE GLOBAL LIQUEFIED NATURAL GAS MARKET

2020 ◽  
Vol 1 (3) ◽  
pp. 39-48
Author(s):  
A. A. SHCHEGOL’KOVA ◽  
Keyword(s):  
Natural Gas ◽  
Economic Analysis ◽  
Large Scale ◽  
Global Market ◽  
Liquefied Natural Gas ◽  
Transport Infrastructure ◽  
Graphical Methods ◽  
Analysis Calculation ◽  
Key Drivers ◽  
Gas Market

The article provides an analysis of the global market for liquefied natural gas (LNG), which revealed the key drivers of changing market dynamics. The development and prospects of large-scale gas projects of the main LNG exporting countries are shown. The potential of key LNG exporters, prospects for the development of the global LNG market has been assessed. Research and analysis of trends in the global LNG market were carried out using statistical methods of economic analysis: calculation of averages, indices; creation of ranks of dynamics; Summaries, groupings of economic indicators; Graphical methods of research were also used. The article assesses the prospects of Russian producers in the global LNG market from the perspective of diversification and modernization of gas transport infrastructure.

Student satisfaction on the implementation of the online undergraduate thesis examination: a PLS-SEM analysis

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Sri Astuti ◽  
Diki Rukmana
Keyword(s):  
Higher Education ◽  
Student Satisfaction ◽  
Conceptual Model ◽  
Structural Equation ◽  
Large Scale ◽  
Sem Analysis ◽  
Equation Modeling ◽  
Content Type ◽  
Undergraduate Thesis

Purpose The covid-19 pandemic that hit the world has caused several changes in the higher education service sector, including the implementation of the undergraduate thesis examination, where direct interaction between students and examiners is avoided and replacing it with an online bachelor thesis exam. This study aims to develop a conceptual model regarding the variables that can affect student satisfaction with the quality of the implementation of online undergraduate thesis examinations in higher education. Design/methodology/approach The research instrument consisted of 22 survey questions distributed to 583 students taking the thesis trial examination in the even semester of 2019/2020 who came from 12 different study programs. Factor analysis and structural equation modeling (SEM) were conducted to analyze the validity of the instrument and test the hypothesis. The results of the analysis show that the 22 instrument items used have been determined by sufficient variables to check the structure of each. Findings SEM analysis results show that the three hypothesized variables (study program service, examiner performance and quality of video conference applications) positively and significantly affect the level of student satisfaction with the online undergraduate thesis examination 0.187, 0.177 and 0.177, respectively. The total effect of these three factors is 0.737. Research limitations/implications This finding is a reference for those who want to improve the quality of the online undergraduate thesis examination in higher education. Originality/value As the online thesis examination was implemented in higher education in Indonesia as a result of the implementation of the study and work at home policy by the Indonesian Ministry of Education, it is important to conduct research on the implementation of online thesis exams in Indonesia, especially to study the conceptual model of variables affect student satisfaction with the implementation of the online thesis exam. Because even though the implementation of online thesis exams on a large scale is new to some higher education in Indonesia.

FEATURES OF CURRENT ECONOMIC ENVIRONMENT OF GLOBAL LIQUEFIED NATURAL GAS MARKET

2020 ◽  
Vol 5 (12) ◽  
pp. 153-163
Author(s):  
A. A. SHCHEGOLKOVA ◽  
◽  
◽  
Keyword(s):  
Natural Gas ◽  
Large Scale ◽  
Driving Forces ◽  
Liquefied Natural Gas ◽  
Economic Environment ◽  
The Arctic ◽  
Resource Base ◽  
Natural Gas Market ◽  
Gas Market ◽  
The Impact

The subject of this article is the economic environment of the global liquefied natural gas (LNG) market. The article assesses the development trends in the global liquefied natural gas market, identifies the key driving forces of the global LNG market, analyzes the existing contractual models in the global LNG market. The study uses a general scientific methodology that provides for a systematic, comprehensive approach to assessing the current economic situation in the global LNG market. A significant array of statistical data and factual material on the global LNG market was analyzed, the results of the research were obtained using statistical methods of economic analysis. As a result, the author conducted an analysis of the trends in the global LNG market, which made it possible to identify the key driving forces behind changes in market dynamics. The dynamics and structure of the global LNG market for the period 2015–2019 have been investigated. An assessment of Russia's position in the global LNG market is given. The impact of the "coronacrisis" on the global LNG market has been studied. The development and prospects of large-scale gas projects of the main LNG exporting countries are shown, the influence of the price environment on the implementation of LNG projects is investigated. It is revealed that geopolitical factors have become decisive in the formation of the world energy policy. The possible impact of the legislative expansion of the resource base of the Arctic territories on the growth of production and export of Russian LNG has been determined. It is concluded that the strategic goal of Russia's energy geopolitics is to modernize the existing export model of LNG for the long term. Modernization of the existing energy export strategy will strengthen the country's competitive position in the global LNG market, thereby becoming the basis for Russia's regional presence in the Arctic, where the main increase in LNG capacity is expected.

Liquefied Natural Gas (LNG) as a Freight Railroad Fuel: Perspective From a Western U.S. Railroad

2012 ◽  
Author(s):  
Michael E. Iden
Keyword(s):  
Natural Gas ◽  
Large Scale ◽  
Liquefied Natural Gas ◽  
Rolling Stock ◽  
Dual Fuel ◽  
Technology System ◽  
Pilot Fuel ◽  
Gas Ignition ◽  
Gas Fuel ◽  
Lng Fuel

The use of liquefied natural gas (LNG) as a line-haul locomotive fuel is not a new idea, despite recent publicity, with previous work stretching back into the 1980s. Intense publicity has been given to recent announcements about developing dual-fuel locomotive engines which can burn natural gas as the primary fuel, using diesel fuel only as a pilot fuel for gas ignition. However, developing a locomotive engine capable of using gaseous fuel may prove to be only one of five major challenges to widespread adoption of LNG as a freight railroad fuel: 1. Dual-fuel line-haul locomotives with engines which can use natural gas fuel must be developed and made available for use. 2. Natural gas fuel must be made available to dual-fuel locomotives, either onboard the locomotive itself or by using LNG tenders coupled to the locomotives. 3. LNG must be stored and available for refueling dual-fuel locomotives or their tenders at logical locations along railroad corridors where such locomotives are to be used. 4. Natural gas (from gas fields or pipelines) must be available along with liquefaction plants to convert the gas into cryogenic LNG fuel. 5. The safe operation of trains and locomotives, and safe maintenance of rolling stock, is paramount and cannot be compromised (nor should the efficiency of the rail system) should dual-fuel locomotives and LNG tenders supplant or replace conventional diesel-fueled locomotives. For LNG to become an effective large-scale freight railroad fuel, all five factors must be managed jointly and treated as a 5-legged technology system. If any one of the five “technology legs” is weak or improperly developed, the entire LNG-based system may be unsuitable in the freight railroad environment.

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