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Rabeb Kammoun

Abstract

Maritime transportation for Tunisia plays an important role in trade exchange with other countries. Therefore, the objective of this paper is to measure the efficiency scores of 7 seaports in Tunisia by applying the Stochastic Frontier Analysis (SFA) with Cobb-Douglas production function and Data envelopment analysis (DEA) with CCR and BCC models. The annual data collected cover the 2007-2017 period for each port. Thus, the sample size for the analysis comprises a total of 77 observations. The empirical result shows that the total average scores of operating efficiency scores were DEA-BCC (0.746) >SFACD (0.536)>DEA-CCR (0.334) from 2007 to 2017. Given these results, the port of Gabes can be considered as the best efficient port in the 3 models (DEA-BCC, DEA-CCR and SFA-CD).

Open access

Sarah Bakhtiari and Mohammad Ali Nekooie

Abstract

Due to the fact that dams are considered one of the strategic infrastructures of a country, it is very important to protect it against destructive acts. Accordingly, sensors were used at various points to record structural responses to the dam. Based on the questionnaires completed by experts, accuracy had the score of 3.8 so it was considered as the most important feature of the sensors and the optical fiber sensor with a mean score of 3.93 was selected as the best sensor type among the available ones. For this project, a questionnaire was prepared based on Likert scale and SPSS method was used in TOPSIS software. Then, Seimare concrete double curvature arch dam was simulated in ABAQUS 2017 software and the proper positioning of the sensors for optimum performance was determined based on Finite Element Method analysis and according to structural control criteria such as tension, displacement, strain, velocity and so one.

Open access

Akeem Bolaji Wahab and Kingsley Omaka

Abstract

Of recent, the need to increase the performance of services installations in buildings has been a major point of interest amongst construction professionals through the consideration of commissioning practices required to be adopted during execution of building projects. The aim of the study is to investigate awareness of building professionals on the adoption of building commissioning practices in the installation and use of building services equipment. The study therefore examines the characteristics of building commissioning practices, examines the level of awareness and adoption of building commissioning practices amongst construction professionals in Lagos State, Nigeria, as well as investigates the factors influencing their adoption. A survey method of research was employed with questionnaire administered on construction professionals available on the list of firms of the Federation of Construction Industry (FOCI) registered with the Lagos State Government. The data collected were analysed with the use of statistical tools, such as frequency distribution, mean item score, analysis of variance and factor analysis. The study shows that amongst the characteristics of building commissioning practices, lighting services have the highest level of engagement with a mean score of 4.45, heating, ventilation and air-conditioning 4.15 while vertical transporting services have a mean score of 3.82. A significant proportion of the respondents are aware of building commissioning practices through different professional training courses and practices. The study also shows that there is relationship between the level of awareness and adoption of building commissioning practices at 95 % confidence level. The indicators in group one are found through the factor analysis to be contributing mostly to the adoption of building commissioning practices by the respondents. The study concludes that with the existing level of its awareness in the study area, efforts should be made by stakeholders to entrench building commissioning practices provisions in the country’s institutional framework/regulatory code, which covers the installation and use of service items in building stock so as to further deepen their adoption in order to enhance performance and comfort of building projects.

Open access

Łukasz Sarnowski, Zbigniew Podgórski and Dariusz Brykała

Abstract

The potential for using a standardized landscape evaluation method for planning a greenway in a young glacial area in northern Poland is evaluated in this paper. In the evaluation of visual landscape attractiveness (VLA), we took into account not only its natural but also its cultural components. The cultural components were divided into two groups, i.e. increasing and decreasing VLA scores. The sources of data needed for the evaluation included a Vector Smart Map level 2 (VMap L2), aerial photographs and a field survey. The newly-designated greenway links two landscape parks (which play the role of greenspaces) and runs along numerous lakes, forests, rivers, and objects of cultural heritage. The greenway is composed of existing local roads, allowing a more optimal utilisation of natural and cultural resources of the landscape, primarily those located between the selected greenspaces. Using this application, the idea of sustainable development can be implemented, and the overlapping protected areas will not be subject to devitalisation. The VLA method can facilitate multiple greenway designations in other areas.

Open access

Jana Spilková

Abstract

Child overweight and obesity represent a serious health problem worldwide. The Czech Republic now ranks the fourth most obese country in Europe and obesity and overweight is becoming more and more frequent in children and teenagers. This pilot study estimates the prevalence of obesity and overweight among Czech teenagers aged 14–15 years in terms of neighbourhood characteristics, and assesses the effects of neighbourhood environmental quality versus family or personal-level factors on teenage obesity and overweight. The results show that unsafe environments result in the risk of lesser physical activity of their inhabitants, but since the vast majority (92%) of the students felt safe in their neighbourhoods, mediation through safety of the neighbourhood is not at stake. Second, the housing estates demonstrate the most severe problems with both obesity and overweight and their built environments, but when perceptions of sporting facilities and similar opportunities for physical activity are factored in, they do not have low scores; therefore, mediation by physical activity is not a relevant response to the obesity problem. These findings imply that the most important obesogenic and obesoprotective factors are likely to be found within the family environment and personal life styles.

Open access

S.V.S. Raja Prasad

Abstract

Indian real estate segment has been one of the utmost affected segments of economy contemplating the changes in economic policies. The Indian economy experienced a radical change as an outcome of demonetization and the consequences are perceived on the real estate segment. The current study has been proposed to evaluate the efficiency of Indian real estate firms by adopting the technique of data envelopment analysis during the pre- and post-period of demonetization. The aim of the research is to understand the effect of demonetization on the performance of the Indian real estate firms during the post-demonetization period compared to pre-demonetization period. Eight real estate firms have been considered for the analysis. The firms have been ranked on the basis of the efficiency score. It is evident from the results of the study that there is a significant difference between the ranks of the firms during the period of pre and post demonetization; and it can be elucidated that the demonetization has an impact on the performance of the firms.

Open access

Ankit Mishra and Linda Kauškale

References British Research Establishment Environment Assessment Method. n.d. BREEAM category issues and aims. Retrieved from https://www.breeam.com/discover/how-breeam-certification-works/ British Research Establishment Environment Method. (n. d.). The Aim of BREEAM. Retrieved from https://www.breeam.com/ British Research Establishment Environment Assessment Method, (2011). Scoring and Rating BREEAM assessed buildings. Retrieved from https://www.breeam.com/BREEAM2011SchemeDocument/Content/03_ScoringRating/scoring

Open access

Jiří Hasman, Yvona Kostelecká and David Hána

References: ALBA, R., NEE, V. (2005): Remaking the American mainstream: assimilation and contemporary immigration. Cambridge, Harvard University Press. BIFULCO, R., LADD, H. F. (2007): School choice, racial segregation, and test-score gaps: Evidence from North Carolina's charter school program. Journal of Policy Analysis and Management, 26: 31–56. BIFULCO, R., LADD, H. F., ROSS, S. L. (2009): Public school choice and integration evidence from Durham, North Carolina. Social Science Research, 38(1): 71–85. BLACK, S. E. (1999): Do Better

Open access

Ankit Mishra and Linda Kauškale

Update. Country sustainability ranking - April 2016, dimension & total sustainability scores Retrieved from http://www.robecosam.com/images/Country_Ranking_Update_May_2016.pdf Rubina, M. (2010). Riga City Council, Riga City Sustainable Energy Action Plan for 2010-2020. Retrieved from http://www.rea.riga.lv/files/MR_ricibas_plans_prezentacija_EN.pdf Santander Trade. (October 2017). Latvia: Foreign Investment. Retrieved from https://en.portal.santandertrade.com/establish-overseas/latvia/investing Santander Trade. (October

Open access

Martin Erlebach, Marián Halás, Jan Daniel and Pavel Klapka

European regions: A multivariate analysis. European Journal of Operational Research, 187(2): 600–612. DiSTEFANO, C., ZHU, M., MINDRILA, D. (2009): Understanding and using factor scores: Considerations for the applied researcher. Practical Assessment, Research & Evaluation, 14(20): 1–11. DOLNICAR, S., GRÜN, B. (2009). Challenging “factor-cluster segmentation”. Journal of Travel Research, 47(1): 63–71. DOLNICAR, S., GRÜN, B. (2011): Three good reasons NOT to use factor-cluster segmentation. Cauthe: 21 st National Conference, Adelaide, Australia, 8