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1 – 10 of over 25000Anthony D. Songer, James E. Diekmann and Douglas Karet
Three‐dimensional (3‐D) computer aided design (CAD) and its integration with project schedules (4‐D CAD) are promising technologies in design and construction. This paper…
Abstract
Three‐dimensional (3‐D) computer aided design (CAD) and its integration with project schedules (4‐D CAD) are promising technologies in design and construction. This paper represents a second study on the effectiveness of visualization on project planning. While the initial study investigated 2‐D, 3‐D and walk‐thru technologies’ impact on project schedule development, the subsequent study reported herein, focuses on the impact of 3‐D/4‐D visualization on project schedule review. Experimental results provide quantitative evidence of the advantages of 3‐D/4‐D representations for schedule review for construction projects.
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Anurag K. Srivastava, Sukumar Kamalasadan, Daxa Patel, Sandhya Sankar and Khalid S. Al‐Olimat
The electric power industry has been moving from a regulated monopoly structure to a deregulated market structure in many countries. The purpose of this study is to…
Abstract
Purpose
The electric power industry has been moving from a regulated monopoly structure to a deregulated market structure in many countries. The purpose of this study is to comprehensively review the existing markets to study advantages, issues involved and lessons learnt to benefit emerging electricity markets.
Design/methodology/approach
The paper employs a comprehensive review of existing competitive electricity market models in USA (California), UK, Australia, Nordic Countries (Norway), and developing country (Chile) to analyze the similarities, differences, weaknesses, and strengths among these markets based on publically available data, literature review and information.
Findings
Ongoing or forthcoming electricity sector restructuring activities in some countries can be better designed based on lessons learnt from existing markets and incorporating their own political, technical and economical contexts. A template for design of successful electricity market has also been presented.
Research limitations/implications
This study is limited to a comparative analysis of five markets and can be extended in the future for other existing and emerging electricity markets.
Practical implications
The discussed weaknesses and strengths of existing electricity markets in this study can be practically utilized to improve the electricity industry market structures leading to several social benefits including lower electricity cost.
Originality/value
The comprehensive review and analysis of five existing markets, physically located in different continents, may be used as an assistance or reference guide to benefit the emerging electricity markets in other countries.
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Han Ching Huang and Pei-Shan Tung
The purpose of this paper is to examine whether the underlying option impacts an insider’s propensity to purchase and sell before corporate announcements, the proportion of…
Abstract
Purpose
The purpose of this paper is to examine whether the underlying option impacts an insider’s propensity to purchase and sell before corporate announcements, the proportion of insiders’ trading after announcements relative to before announcements, and the insider’s profitability around corporate announcements.
Design/methodology/approach
The authors test whether the timing information and option have impacted on the tendency of insider trade, the percentage of all shares traded by insiders in the post-announcement to pre-announcement periods and the average cumulative abnormal stock returns during the pre-announcement period.
Findings
Insiders’ propensity to trade before announcements is higher for stocks without options listed than for stocks with traded options. This result is stronger for unscheduled announcements than for scheduled ones. The proportion of insiders’ trade volume after announcements relative to before announcements in stocks that have not options listed is higher than those in stocks with traded options. The positive relationship between the insiders’ signed volume and the informational content of corporate announcements is stronger in stocks without traded options than in stocks with options listed. Insider trades prior to unscheduled announcement are more profitable than those before scheduled ones.
Research limitations/implications
The paper examines whether there is a difference between the effects of optioned stock and non-optioned stock. Roll et al. (2010) use the relative trading volume of options to stock ratio (O/S) to proxy for informed options trading activity. Future research could explore the impact of O/S. Moreover, the authors examine how insiders with private information use such information to trade in their own firms. Mehta et al. (2017) argue that insiders also use private information to facilitate trading (shadow trading) in linked firms, such as supply chain partners or competitors. Therefore, future research could consider the impact of shadow trading.
Social implications
Since the insider’s propensity to buy before announcements in stocks without options listed is larger than in stocks with traded options and the relationship is stronger for unscheduled announcements than for scheduled ones, the efforts of regulators should focus on monitoring insider trading in stocks without options listed prior to unscheduled announcements.
Originality/value
First, Lei and Wang (2014) find that the increasing pattern of insider’s propensity to trade before unscheduled announcements is larger than that before scheduled announcements. The authors document the underlying option has impacted the insider’s propensity to purchase and sell, and the relationship is stronger for unscheduled announcements than for scheduled ones. Second, related studies show insider’s trading activity has shifted from periods before corporate announcements to periods after corporate announcements to decrease litigation risk. This paper find the underlying option has influenced the proportion of insiders’ trading after announcements relative to before announcements when the illegal insider trade-related penalties increase.
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Trade barriers between countries, especially cash‐strapped countries, are being revised and/or dropped as a means of promoting international trade. Even the U.S. is aggressively…
Abstract
Trade barriers between countries, especially cash‐strapped countries, are being revised and/or dropped as a means of promoting international trade. Even the U.S. is aggressively seeking trade with countries as a way to create jobs, boost our economy, and improve our trade balance Because of the importance of international trade, governmental agencies assist this process by “greasing the wheels of investment” through the provision of information, consultation, and exploration as they attempt to assist small‐ and medium‐size businesses gain international trade experience (Business Korea, June 1999). For the U.S., SMEs will be the engine of economic growth over the next few years (Field, 1997). SMEs can go it alone, using internet technology, or they can seek low‐cost assistance in learning the ropes relative to international trade.
Anil Kumar Manchikatla and Rajesh H. Acharya
The purpose of this paper is to study the effectiveness of insider trading enforcement actions in India and international dimensions.
Abstract
Purpose
The purpose of this paper is to study the effectiveness of insider trading enforcement actions in India and international dimensions.
Design/methodology/approach
The research is based on the insider trading regulations and amendments made during the period 1992-2015.
Findings
The notable observation of the study is the dearth of insider trading conviction and the paucity of prosecution for insider trading offences in India. It is difficult to resist the conclusion that surveillance and enforcement matter more than the drafting of the relevant statutes and regulations in emerging markets. Whereas, developed countries have a better record of prosecution than emerging markets.
Research limitations/implications
Future research may explore the factors that hinder effective regulation and recommend new methods to increase the impact of Securities and Exchange Board of India insider trading regulation.
Originality/value
The current paper presents guidance for the foreign institutional investors, regulators and market participants on insider trading regulation and prosecution in India.
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Oya Icmeli, S. Selcuk Erenguc and Christopher J. Zappe
A survey of project scheduling problems since 1973 limited to workdone specifically in the project scheduling area (although severaltechniques developed for assembly line…
Abstract
A survey of project scheduling problems since 1973 limited to work done specifically in the project scheduling area (although several techniques developed for assembly line balancing and job‐shop scheduling can be applicable to project scheduling): the survey includes the work done on fundamental problems such as the resource‐constrained project scheduling problem (RCPSP); time/cost trade‐off problem (TCTP); and payment scheduling problem (PSP). Also discusses some recent research that integrates RCPSP with either TCTP or PSP, and PSP with TCTP. In spite of their practical relevance, very little work has been done on these combined problems to date. The future of the project scheduling literature appears to be developing in the direction of combining the fundamental problems and developing efficient exact and heuristic methods for the resulting problems.
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Okechukwu Bruno-Kizito Nwadigo, Nicola Naismith, Ali GhaffarianHoseini, Amirhosein GhaffarianHoseini and John Tookey
Dynamic planning and scheduling forms a widely adopted smart strategy for solving real-world problems in diverse business systems. This paper uses deductive content analysis to…
Abstract
Purpose
Dynamic planning and scheduling forms a widely adopted smart strategy for solving real-world problems in diverse business systems. This paper uses deductive content analysis to explore secondary data from previous studies in dynamic planning and scheduling to draw conclusions on its current status, forward action and research needs in construction management.
Design/methodology/approach
The authors searched academic databases using planning and scheduling keywords without a periodic setting. This research collected secondary data from the database to draw an objective comparison of categories and conclusions about how the data relates to planning and scheduling to avoid the subjective responses from questionnaires and interviews. Then, applying inclusion and exclusion criteria, we selected one hundred and four articles. Finally, the study used a seven-step deductive content analysis to develop the categorisation matrix and sub-themes for describing the dynamic planning and scheduling categories. The authors used deductive analysis because of the secondary data and categories comparison. Using the event types represented in a quadrant mapping, authors delve into where, when, application and benefits of the classes.
Findings
The content analysis showed that all the accounts and descriptions of dynamic planning and scheduling are identifiable in an extensive research database. The content analysis reveals the need for multi-hybrid (4D BIM-Agent based-discrete event-discrete rate-system dynamics) simulation modelling and optimisation method for proffering solutions to scheduling and planning problems, its current status, tools and obstacles.
Originality/value
This research reveals the deductive content analysis talent in construction research. It also draws direction, focuses and raises a question on dynamic planning and scheduling research concerning the five-integrated model, an opportunity for their integration, models combined attributes and insight into its solution viability in construction.
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The purpose of this paper is to illustrate how emission constraints imposed by the emission trading scheme (ETS) in the European Union, as well as transmissions capacity, can…
Abstract
Purpose
The purpose of this paper is to illustrate how emission constraints imposed by the emission trading scheme (ETS) in the European Union, as well as transmissions capacity, can affect the outcome of the generation scheduling. The aim is to demonstrate the application of the generation scheduling tool which includes both the ETS and transmission constraints, and helps evaluate their effect on emission reduction, costs, and generators' behavior and availability. It can also be used to help generators make strategic decisions regarding utilization and purchases of carbon allowances.
Design/methodology/approach
The paper extends the generation scheduling formulation to allow for additional constraints modeling. The formulation is based on the mixed integer programming approach with linearization of generation cost and emission functions, and the possibility to split the system into zones in order to investigate transmission congestion.
Findings
The paper presents six case studies that include unconstrained and constrained operation, both from the emission and transmission points of view. It also illustrates the effect of free allocations versus auctioning. The case studies look into the system with wind generation that can be constrained due to transmission limits, and their impact on emission reductions. This is often the case in systems where most of the wind generation is located in the area which does not have sufficiently strong links to the rest of the system where the majority of loads are.
Research limitations/implications
The extension of the work will be inclusion of stochastic nature of emission prices and wind availability. It will also be used for further studies on systems with high wind penetration and insufficient transmission capacity.
Originality/value
The generation scheduling tool and the results from the paper could be useful for generators when making decisions on how to use or purchase their emission allocations, as well as for evaluation of the adverse affect of transmission congestion on carbon emission reductions.
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The outlook for US alliances.
Details
DOI: 10.1108/OXAN-DB251063
ISSN: 2633-304X
Keywords
Geographic
Topical
Dinesh Jaisinghani, Muskan Kaur and Mohd Merajuddin Inamdar
The purpose of this paper is to analyze different seasonal anomalies for the Israeli securities markets for the pre- and post-global financial crisis periods.
Abstract
Purpose
The purpose of this paper is to analyze different seasonal anomalies for the Israeli securities markets for the pre- and post-global financial crisis periods.
Design/methodology/approach
The closing values of six indices of the Tel Aviv Stock Exchange (TASE) of Israel have been considered. The time frame ranges from 2000 to 2018. Further, the overall time frame has been segregated into pre- and post-financial crisis periods. The study employs dummy variable regression technique for assessing different calendar anomalies.
Findings
The results show evidence pertaining to different seasonal anomalies for the Israeli markets. The results specifically show that the anomalies change considerably across the pre- and post-financial crisis periods. The results are more apparent for three anomalies including the day of the week effect, the month of the year effect and the holiday effect. However, anomalies including the Halloween effect and the trading month effect are found to be insignificant across both pre- and post-financial crisis periods.
Originality/value
The study is first of its kind that analyzes different seasonal anomalies across pre- and post-financial crisis periods for the Israeli markets. The study provides newer insights about the overall return patterns observed in different indices of the TASE.
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