Search results

The purpose of this paper is to deal with the different phases of volatility behavior and the dependence of the variability of the time series on its own past, models allowing for heteroscedasticity like autoregressive conditional heteroscedasticity (ARCH), generalized autoregressive conditional heteroscedasticity (GARCH), or regime‐switching models have been suggested by reserachers. Both types of models are widely used in practice.

Both regime‐switching models and GARCH are used in this paper to model and explain the behavior of crude oil prices in order to forecast their volatility. In regime‐switching models, the oil return volatility has a dynamic process whose mean is subject to shifts, which is governed by a two‐state first‐order Markov process.

The GARCH models are found to be very useful in modeling a unique stochastic process with conditional variance; regime‐switching models have the advantage of dividing the observed stochastic behavior of a time series into several separate phases with different underlying stochastic processes.

The regime‐switching models show similar goodness‐of‐fit result to GARCH modeling, while has the advantage of capturing major events affecting the oil market. Daily data of crude oil prices are used from NYMEX Crude Oil market for the period 13 February 2006 up to 21 July 2009.

Co‐operation is necessary for the economic survival of destinations with a fragmented offer under conditions of global competition. Customer orientation forces the SME's to co‐operate for the development and the commercialisation of tourism services.

As demographic changes impact the workplace, governments, organizations, and workers are looking for ways to sustain optimal working lives at higher ages. Workplace flexibility has been introduced as a potential way workers can have more satisfying working lives until their retirement ages. This chapter presents a critical review of the literature on workplace flexibility across the lifespan. It discusses how flexibility has been conceptualized across different disciplines, and postulates a definition that captures the joint roles of employer and employee in negotiating workplace flexibility that contributes to both employee and organization benefits. Moreover, it reviews how flexibility has been theorized and investigated in relation to older workers. The chapter ends with a future research agenda for advancing understanding of how workplace flexibility may enhance working experiences of older workers, and in particular focuses on the critical investigation of uses of flexibility in relation to older workers.

This paper explores the contested notion of what constitutes a fair price in the context of grain exchanges in a subsistence farming village in the highlands of Matagalpa. Using ethnographic data, I show how Nicaraguan campesinos’ economic behavior plays out within a local moral universe of fairness: how much to produce and how much to sell in the market (or to give away); how prices and obligations vary depending on the social relation that binds the seller and the buyer (kinship, friendship, community, and so on); in what ways these notions of fair price are articulated and contested by different classes within a rural community; and lastly, what is expected of the State in terms of regulating food prices. Price emerges as the dialectic between the market in its abstract form and the specific social relationships and everyday politics that shape exchanges. What constitutes help (ayuda) and what constitutes exploitation in market exchanges and the determination of price is constantly contested, the moral economy is a discursive battlefield.

The purpose of this paper is to present modern marketing tools used by today’s businesses to maintain or strengthen the value of their brands in the conditions of deteriorating economic situation. The specific purpose is an analysis of activities that might be attempted by companies in emerging markets in order to increase the strength of their brands.

The paper presents the determinants of the development of brand value. An analysis has also been made of activities connected with the development of the brand based on the experience of the best brands in the world. Considerations are based on secondary sources, from national and international journals, books, magazines and specialist reports, as well as were supported by research results of the most valuable brands in the world.

The paper provides the insight of marketing activities, that may favor building brand value in the time of recession. It was suggested that recession may be a good time for some companies to invest in the brand. However, today’s competition conditions are forcing companies to used more modern marketing techniques in order to build a positive brand image. In addition, customers increasingly expect to be able to engage in brand and wish to influence its image.

The paper includes implications for companies in emerging markets, through which it is possible to effectively manage brand value in the time of crisis. These proposals are an important course of action for companies from emerging markets, which tend to increase the strength of its brand.

Due to the fact that the considerations in the paper relate to general proposals for action, the results can constitute a starting point for in-depth research in the future. An interesting issue would be to assess the effectiveness of the proposed activities in emerging markets.

The purpose of this article is the discussion of a service-learning experience in architecture pedagogy, based on two core courses at a private university in Mexico. The aim is to identify learning opportunities, challenges and implications arising from engaging with inhabitants of an informal urban settlement with limited digital resources in La Campana-Altamira in Monterrey, Mexico.

The methodology selected is a case study approach, chosen for its effectiveness in architectural pedagogy to create knowledge through exposure to a particular phenomenon, as well as highlight positive teaching practices to facilitate replicability. Case-study methodology was also beneficial in this case because its openness and flexibility allowed for research of a variety of phenomena simultaneously, in this case, both the effects in the informal settlement community and in the academic one.

Findings revealed that opportunities outweigh challenges, and meaningful service and learning are possible in an online context, even when the service aspects take longer than the course length if there are long-term relationships between communities and institutions.

The value of the article lies in the need for flexible and sensitive approaches that put communities in the center, a critical path to identifying and understanding their needs and improving their contexts. This holds especially true given the rapid pace of worldwide urbanization and the ubiquity of informal urban settlements. Implementing service-learning approaches in informal settings using online tools, while sanitary restrictions are in place shows that meaningful experiences can be achieved, even when courses are short and resources are limited.

This study aims to offer a bibliometric analysis of the already substantial and growing literature on global virtual teams (GVTs).

Using a systematic literature review approach, it identifies all articles in the Web of Science from 1999 to 2021 that include the term GVTs (in the title, the abstract or keywords) and finds 175 articles. The VOSviewer software was applied to analyze the bibliometric data.

The analysis revealed three dialogizing research clusters in the GVTs literature: a pioneering management information systems and organizational cluster, a general management cluster and a growing international management and behavioural studies cluster. Furthermore, it highlights the most cited articles, authors, journals and nations, and the network of strong and weak links regarding co-authorships and co-citations. Additionally, this study shows a change in research patterns regarding topics, journals and disciplinary approaches from 1999 to 2021. Finally, the analysis illustrates the position and centrality in the network of the most relevant actors.

The findings can guide management practitioners, educators and researchers to the most meaningful clusters of publications on GVTs, and help navigate and make sense of the vast body of the available literature. The importance of GVTs has been growing in the past two decades, and Covid-19 has accelerated the trend.

This study provides an updated and comprehensive systematic literature review on GVTs. To the best of the authors’ knowledge, it is also the first systematic literature review and bibliometry on GVTs. It concludes by suggesting future research paths.

Location awareness is essential to decisions pertinent to tracking and progress reporting, as well as to safety in construction projects. However, these applications have been mostly limited to the outdoor environment, where satellites for positioning information are in view. Recent studies on indoor location sensing systems are now overcoming this limitation and offering significant potential on construction practices, and radio frequency identification (RFID) is the most widely utilised technology for such application. The purpose of this paper is to address a wide range of protocols that are vital for RFID deployment for indoor construction. The paper identifies deployment settings to provide data acquisition with higher accuracy for indoor location sensing in construction.

A computational platform was designed to assess and evaluate the most suitable condition related to deployment of reference tags in construction. In this platform, a number of protocols and parameters are presented and their performance is evaluated. The evaluation scenarios were performed on a construction facility in Montreal, as well as in a controlled lab environment. The computational platform used for the study comprises the use of passive reference RFID tags and K Nearest Neighbour algorithm (K‐NN) for course‐grained detection of target's location and its classification into pre‐defined zone areas.

The studies resulted in a number of observations, findings, and lessons learned for RFID deployment in construction. The results indicate that: the speed of the reader is in direct relationship with the detection error rate; zone configuration effectiveness is in direct relationship with the deployed RFID read‐range; error rate on the controlled environment is significantly lower than rates in construction site; and stationary reader performs better than moving reader.

The paper's findings are expected to be of considerable value to researchers and practitioners involved in the utilisation of RFID technology in construction. The paper provides a set of helpful protocols for the deployment of passive RFIDs for automated onsite management of construction operations.