Energy saving of buildings is a big issue because building energy occupies about 25% of national energy. To reduce building energy, many countries try to control building energy…
Abstract
Energy saving of buildings is a big issue because building energy occupies about 25% of national energy. To reduce building energy, many countries try to control building energy by laws, such as building energy regulations. This study has two objectives. The first is to evaluate building energy efficiency rate of a specific building using annual energy analysis software based on BIM tools. The second objective is to reduce building energy usage adopting passive and active architectural strategies under the Korean building energy rating regulation. A newly constructed public library building was selected as energy simulation base model, and a few active and passive energy saving strategies were applied to the same building. Energy plus was adopted as a simulation tool. The calculated annual source energy usage per area for alt model was 210.7 kWh/m2 yr, and the value for base model was 355 kWh/m2 yr. The building energy efficiency rate for alt model is the first class under Korean building energy rating regulation.
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Young Yoon Choi, Hun-Koo Ha and Minions Park
The maritime freight transportation industry has played an important role in the Korean economy. The Korean maritime freight transportation industry is faced with a period of…
Abstract
The maritime freight transportation industry has played an important role in the Korean economy. The Korean maritime freight transportation industry is faced with a period of transforming it competitively and efficiently in this global age. This paper, therefore, aims to identify the impact of the maritime freight transportation industry in the Korean national economy. Hence, this paper provides policy-makers with accessible and reliable information regarding the role of the Korean maritime freight transportation industry. This study employs input-output (I-O) analysis to examine the role of the maritime freight transportation industry in the national economy for the period 1995-2003, with specific application to Korea. This study pays particular attention to the maritime freight transportation industry by taking the industry as exogenous variable and then investigates its economic impacts. We identify inter-industry linkage effects in 20 sectors, production-inducing effects, added value-inducing effects, and supply-shortage effects of the maritime freight transportation industry.
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Sang M. Lee, Sung Tae Kim and Donghyun Choi
The purpose of this study is to explore green supply chain management (GSCM) practices and their relationship with organizational performance. More specifically, this research…
Abstract
Purpose
The purpose of this study is to explore green supply chain management (GSCM) practices and their relationship with organizational performance. More specifically, this research explores the effect of GSCM efforts and other organizational factors on firm performance of small and medium enterprises (SMEs) that serve as suppliers to large customer firms in the electronics industry.
Design/methodology/approach
This study developed a research model relating GSCM practice and business performance through three organizational variables (employee satisfaction, operational efficiency, and relational efficiency) as moderators. Statistical analyses were based on the data collected, through survey questionnaires, from 223 SMEs in the electronics industry in Korea. Reliability, validity, and goodness‐of‐fit of the research model were tested by the widely accepted statistical tools. To test the hypotheses relating GSCM practice implementation and business performance, structural equation modeling was used.
Findings
The most anticipated finding of the study was a direct link between GSCM practice implementation and business performance. However, no statistical significance was found. Instead, significant indirect relationships were found between GSCM practice implementation and business performance through mediating variables of operational efficiency and relational efficiency. This result indicates that business performance will be improved when GSCM enhances operational efficiency and operational efficiency.
Research limitations/implications
Research on GSCM is still at the early stage. Further refinement of the questionnaire is needed. Generalizability of the findings is also limited because of data collected from electronics firms in Korean. This study shed several important insights. The findings of this study are generally consistent with prior studies in other parts of the world. SMEs in the Korean electronics industry believe that GSCM practices help generate new opportunities to attract clients in addition to complying with the buyer firms' demand. It was also found that implementation of GSCM practices help improve operational and relational efficiencies of supplier firms.
Originality/value
Few empirical studies have been done in GSCM based on the conceptual footing of resource dependence theory. Also, this study was conducted from the supplier's perspective in examining the weaknesses of SME suppliers. Thus, the authors emphasize the importance of support from large buying firms for improving SME suppliers' green management capabilities.
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Abstract
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Japan’s Foreign Minister Taro Kono called the ruling “totally unacceptable” and warned that Tokyo is considering “every option”. South Korean Prime Minister Lee Nak-yon said he…
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DOI: 10.1108/OXAN-DB239563
ISSN: 2633-304X
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Ouafae El Yahyaoui, Bahia Bouabid, Nabil Ait Ouaaziz, Mohamed El Bakkali, Hanae El Harche, Lalla Aicha Lrhorfi, Kamal Nakari and Rachid Bengueddour
Within the framework of the valorization of natural resources, a characterization of the biochemical composition of the edible parts of Adansonia Digitata is applied. The…
Abstract
Purpose
Within the framework of the valorization of natural resources, a characterization of the biochemical composition of the edible parts of Adansonia Digitata is applied. The antibacterial effect against bacteria is also realized and compared to some synthetic antibiotics.
Design/methodology/approach
The biochemical characterization is carried out according to the norms of the French Association of Normalization, methods of Association of Official Analytical Chemists (AOAC International) and gas chromatography (GC). The antibacterial activity is tested by disk diffusion on a solid medium. Parametric tests are used to compare the differences between groups and heat maps to show the expression of the mean inhibitions according to the studied parameters. Multivariate logistic modeling is applied to study the effect of extracts and antibiotics on bacteria.
Findings
Biochemical characterization showed a variable importance of proteins, fibers and total sugars, with the presence of highly desired fatty acids such as palmitic, oleic, stearic, linoleic and a-linolenic acids. This gives the tested parts important energy values, especially in the seeds very rich in fatty acids. Methanol proved to be a better extraction solvent than dichloromethane. Antibacterial activity showed that pulp and leaves extracted with methanol had quite similar inhibitory activities against Enterococcus faecalis ATCC29212 and that this effect was better than some antibiotics. Multivariate analysis showed that the leaves had a similar effect to antibiotics, and a significant effect against Staphylococcus aureus ATCC29213.
Originality/value
This important activity and the attractive nutritional value of this plant could justify its extensive use in the traditional pharmacopoeia.