Search results

To better understand the use intensity of e-government service offerings among citizens, a considerable number of studies have examined correlations between various attitudinal constructs related to such offerings and citizens’ service adoption (intentions). This investigational paper aims to take a different angle by exploring associations between a set of 11 objectively identifiable household and individual behavioral and socio-demographic characteristics on the one side and three levels of e-government services use on the other.

The empirical analysis is based on survey responses of a random sample of 17,012 individuals residing in Germany.

Ordinal logistic regression analysis suggests that citizens with low use levels of public e-service offerings are most likely younger male persons with low levels of computer literacy, internet affinity and education, who have a migration background and live in small mid-level-income households located in rural communities.

The findings imply that public institutions may find it difficult to rapidly raise e-government acceptance by distributing only “technocratic” information explaining various service options. Public authorities should consider supplementing “pure” information programs by measures which ensure that the software of e-government service platforms is designed in a way guaranteeing a very high level of “usability”. Furthermore, they should analyze whether the benefits of providing e-government services in specific foreign languages outweigh the costs of such a service extension. If this is the case, an easy-to-use software menu item should be introduced which enables citizens to switch to another common foreign language.

The contribution of this paper results from the analysis of a set of objective predictors of e-government service use in a large random sample of citizens residing in Germany, whereas most prior studies are based on surveys of small convenience samples in other countries.

International roaming (IR) makes it possible to conveniently use mobile communication services (MCS) such as MI access abroad without switching providers, devices or subscriber identity module (SIM) cards. To increase the intensity of competition in the intra-European Union market for IR services, customers will be enabled to buy IR voice and MI access services separately from their existing domestic MCS, as of July, 2014. Specifically, for separated international MI services providers can choose from three different charge types (use-dependent, flat and combination of flat and use-dependent). The purpose of this paper is to empirically examine customer preferences regarding these tariff types for separated international MI services.

Six research questions concerning antecedents of tariff type preferences for separated international MI access services are derived from a literature review. They are empirically addressed by analyzing survey responses obtained for a sample of 496 German-speaking MCS users.

Customers who actively seek for IR price information, consider IR services to be useful, exhibit high use intensities of MI services, do not restrict their MI usage when travelling abroad and tend to prefer flat rates to other pricing schemes. In contrast to these rather “active users”, customers favoring strictly use-dependent tariff plans exhibit significantly lower IR price information seeking efforts and comparatively low use intensities of MI services. Pricing schemes with MI allowances are especially liked by customers who are well-informed regarding and satisfied with IR prices, report above average use intensities of MI services, restrict their MI use abroad, are more likely to switch providers and use MCS mainly for job-related purposes.

The study is based on a German-speaking sample, which deviates from the German adult population. Additionally, the analysis is limited to stated instead of behaviorally revealed preferences for cross-border MI tariff types. Price thresholds influencing whether a cross-border MI tariff is entered into a consumer’s relevant set of offerings are not examined.

The research suggests that mobile network operators are well-advised to offer a clearly structured menu of a limited number of tariffs directed to the three profiled customer segments. Notwithstanding the advantages of such a set of rate plans, international MI tariff schemes with a data volume allowance appear to be generally beneficial both from a provider and an end-customer perspective.

To date, little is known about customer preferences concerning the three rate plan categories and on antecedents of such preferences in the field of MI access abroad. The present study takes a first step to narrowing this knowledge gap.

This study aims to optimize the energy consumption of residential buildings in mild and humid climates. It investigates the use of thermal insulation to reduce thermal load through energy simulation analysis.

A residential building located in Rasht city, Iran (a mild and humid climate zone), is simulated using DesignBuilder software. Subsequently, the minimum thermal resistance for external walls and roof is analyzed along with its impact on building energy consumption and carbon emissions.

The simulation results indicated a 26.5% reduction in heat loss through the walls and a 14.2% reduction through the roof due to optimal thermal insulation. Furthermore, optimal insulation led to a 19.2% reduction in cooling system energy use, a 12% reduction in heating system energy use and a combined 15.3% reduction in total energy consumption for cooling and heating.

This optimization process leads to several benefits: reduced costs associated with thermal and cooling energy losses in buildings, improved building performance against atmospheric factors and, ultimately, a reduction in energy consumption across the building industry. This research can be valuable to various stakeholders, including the construction industry and building sector, municipalities and engineering systems, building owners and contractors and environmental organizations. By implementing these findings, they can improve the state of modern building insulation and achieve greater energy efficiency.

This paper aims to synthesize and categorize the published literatures related to maintenance strategies formulation, selection and implementation in various industries. The purpose of this paper is to develop a conceptual framework based on literature review for formulation of maintenance strategies, selection and the implementation of selected strategies. Further, to study on impact of maintenance strategies implementation in maintenance function.

A literature review has been carried out to identify the existing frameworks related to maintenance strategies formulation, selection of maintenance strategy and implementation of maintenance strategy in the industry. Literature support for all the conceptual constructs referred in the framework has been discussed to establish a logical sequence.

A conceptual framework for maintenance strategies formulation, selection and implementation and its impact in maintenance function has been developed. Further, constructs and sub-constructs which form the basis for maintenance strategies formulation, selection and implementation have been identified from the literatures. In addition, propositions have also been formulated to support the conceptual framework and these propositions provide the logical relationship among the maintenance strategies formulation, selection among the formulated strategies and the implementation of these strategies.

The conceptual framework developed in this paper for maintenance strategy formulation and selection is yet to be empirically tested. The proposed framework can be tested in various industries.

Literature study on maintenance strategy formulation and selection has so far been very limited. Maintenance strategy selection is a critical decision-making problem for the maintenance managers working in the process plant, manufacturing companies, etc. The conceptual framework proposed in this paper will help maintenance managers to asses, formulate, select suitable maintenance strategy and implement for their organization.

The paper provides comprehensive study on maintenance strategy problem which will be useful to researchers, maintenance managers and other professionals in various industries such as process industry, manufacturing industry, etc., to understand maintenance strategy selection problem and implementation of maintenance strategy.

The aim of this paper is to classify suppliers into some clusters based on sustainability factors. However, there might be some unqualified suppliers and we should identify and remove those suppliers before clustering.

First, using fuzzy screening system, the authors identify and remove the unqualified suppliers. Then, the authors run their proposed clustering method. This paper proposes a data envelopment analysis (DEA) algorithm to cluster suppliers.

This paper presents a two-aspect DEA-based algorithm for clustering suppliers into clusters. The first aspect applied DEA to consider efficient frontiers and the second aspect applied DEA to consider inefficient frontiers. The authors examine their proposed clustering approach by a numerical example. The results confirmed that their method can cluster DMUs into clusters.

The main contributions of this paper are as follows: This paper develops a new clustering algorithm based on DEA models. This paper presents a new DEA model in inefficiency aspect. For the first time, the authors’ proposed algorithm uses fuzzy screening system and DEA to select suppliers. Our proposed method clusters suppliers of MPASR based on sustainability factors.

Genetics, a discipline of biology, is one of the most recent and rapidly advancing disciplines in science. This study aims to present a bibliometric analysis of the genetics research output of Iranian authors, map the intellectual structure of these studies and investigate the development path of this literature and the interrelationships among the main topics.

This study searched the Web of Science database for documentation of Iranian-published genetics research published up to 2020. Further, this study used HistCite software to profile and analyze the most cited articles and references and to draw their historiographies.

A database search revealed 21,329 documents that created the study population. The highest cited publications based on the Global Citation Score (GCS) and Local Citation Score (LCS) achieved scores of 602 and 47, respectively. The publication growth rate study demonstrated consistent expansion over time. The scientific maps based on LCS and GCS had five and four clusters, respectively. Furthermore, journal articles emerged as the predominant type of publication.

The significance of this study is in its contribution to understanding the genetics research position in Iran, informing policymakers and researchers, helping scientific collaboration and its impact on public attitudes and quality of life. The results of the present study, with benefits for various groups of communities, such as policymakers, academic groups and public society, can bridge the gap between theoretical research and practical implications.

The results of this study, by helping future advancement in health care, medical genetics and disease prevention, may have a direct and indirect positive influence on the quality of life. Furthermore, it may lead to more informed discussions on health care and biotechnology as well as influencing public attitudes and perceptions.

Ultimately, this study concludes that despite the proliferation of publications in terms of quantity and complexity, especially in areas such as disease diagnosis, prevention and treatment, there remains a need for more attention to other facets of genetics such as biology and biotechnology. Iranian publications are most related to population genetics, human genetics, molecular genetics, medical genetics, genomics, developmental genetics and evolutionary genetics out of 10 branches of genetics. This study reveals patterns in scientific outputs and authorship collaborations and plays an alternative and innovative role in revealing Iranian research trends in genetics.