• Journal of Biosystems Engineering
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• v.40 no.3
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• pp.238-249
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• 2015

Purpose: Fruit and vegetable production is a fast-growing sector in East Africa, and it bears considerable local and international market potential. In an effort to analyze the challenges within this sector and suggest possible solutions, this study reviews the postharvest handling technologies commonly used with fruits and vegetables in East Africa. Methods: During the course of this study, small-scale farmers were identified as the most prominent producers of fruit and vegetable crops in the region. Results: We found that many of these small-scale farmers employed relative simple and inexpensive techniques in handling their limited volumes of produce. Several factors could be addressed to reduce postharvest losses, including weak policies, inferior infrastructure, and poor market strategies. However, the lack of basic knowledge (including demographic, scientific, and economic knowledge) among the stakeholders (e.g., researchers, farmers, governments, nongovernment organizations, and merchants) on how to develop, implement, use, and sustain the recommended handling technologies is probably the most problematic. Conclusions: We recommend that high priority be placed on closing the knowledge gap, which could enhance the efforts of all the stakeholders to address and reduce postharvest losses.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.8 no.11
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• pp.3810-3836
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• 2014

Geo-location white space spectrum databases (GL-WSDBs) are currently the preferred technique for enabling spectrum sharing between primary users and secondary users or white space devices (WSDs) in the very-high frequency (VHF) and ultra-high frequency (UHF) bands. This is true because technologies for making low-cost WSDs capable of autonomous sensing and detection of available white space (WS) spectrum are not yet feasible. This paper reviews the necessary enabling technical conditions to allow coexistence of primary and secondary systems in the VHF and UHF spectrum through a GL-WSDB approach. The practical implementation of South Africa's first GL-WSDB was performed. Results of WS channels available from five cities in South Africa calculated from the implemented GL-WSDB was compared with a commercially available GL-WSDB and was found to be 68% similar. Additionally, results from the implemented GL-WSDB were compared with measurements obtained from field spectrum scanning campaigns at two different locations in Cape Town, South Africa, and was found to be 64% similar.

• Analytical Science and Technology
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• v.36 no.2
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• pp.99-104
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• 2023

Trace elements (TEs) have significant effects on both dental health and human health. Toxic effects are caused by deficiency or excess of TEs. This study was performed to determine levels of toxic and trace elements in incisor and molar teeth sampled from male and female participants residing in the north and south regions of Sudan. The tooth enamel of 18 extracted human teeth was analyzed using particle-induced x-ray emission (µ-PIXE) to determine its elemental profile and distribution. GeoPIXEII software package was used for the analysis of µ-PIXE data. The main elements determined were Na, Mg, P, S, Cl, K, Ca, Mn, Fe, Zn, Co, and Sr which were homogeneously distributed in the areas of the tooth enamel mapped with micro-PIXE.

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.01a
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• pp.243-244
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• 2022

본 연구는 코로나-19로 인해 아프리카 국가들 중 1인당 사망자수와 케이스 수 그리고 환경적 요인과 의료 환경 요인을 데이터베이스화하여 다각적인 방면에서 측정하고 분석하였다. 코로나로 인해 사망자수가 증가하였으나 무엇이 가장 영향을 끼친 요인인지에 대해서 아직 정확히 밝혀진 바가 없다. 또한, 코로나 특성상 하나의 요인이 아닌 여러 요인이 혼합적으로 작용하여 일어나기 때문에, 여러 상황을 가정하여 외부 환경과 의료 환경을 모두 분석하였다. 이를 통해 요인을 확인하고 요인이 없다면 향후 다른 요인을 밝혀내기 위해 필요한 자료로 사용될 것이며 앞으로 각 국가별로 정책을 실행할 때 이를 이용해 '위드 코로나', '폐쇄 정책' 등을 실시할 수 있을 것으로 기대된다.

• Journal of Plant Biotechnology
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• v.43 no.3
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• pp.302-310
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• 2016

A study aimed at identifying putative drought responsive genes that confer tolerance to water stress deficit in tea plants was conducted in a 'rain-out shelter' using potted plants. Eighteen months old drought tolerant and susceptible tea cultivars were each separately exposed to water stress or control conditions of 18 or 34% soil moisture content, respectively, for three months. After the treatment period, leaves were harvested from each treatment for isolation of RNA and cDNA synthesis. The cDNA libraries were sequenced on Roche 454 high-throughput pyrosequencing platform to produce 232,853 reads. After quality control, the reads were assembled into 460 long transcripts (contigs). The annotated contigs showed similarity with proteins in the Arabidopsis thaliana proteome. Heat shock proteins (HSP70), superoxide dismutase (SOD), catalase (cat), peroxidase (PoX), calmodulinelike protein (Cam7) and galactinol synthase (Gols4) droughtrelated genes were shown to be regulated differently in tea plants exposed to water stress. HSP70 and SOD were highly expressed in the drought tolerant cultivar relative to the susceptible cultivar under drought conditions. The genes and pathways identified suggest efficient regulation leading to active adaptation as a basal defense response against water stress deficit by tea. The knowledge generated can be further utilized to better understand molecular mechanisms underlying stress tolerance in tea.

• Journal of Korea Technology Innovation Society
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• v.15 no.2
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• pp.323-344
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• 2012

We investigate and analyze the effect of population density on digital divide in Africa by applying the panel data analysis therein. From the estimation results based on the panel data analysis, it has been found that population density as well as both levels of income and education has a significant effect on the digital divide in African region. In particular, the fact that the variable of population density makes a significantly influential role implies that the construction cost of information infrastructure in Africa behaves such a considerable obstacle to Africa wishing to enter into information society. In conclusion, throughout the integration of the estimation results in the paper, the following implications for economic cooperation with Africa can be drawn. The estimation results mentioned above strongly imply that the variable referred to as population density should be considered in selecting which countries to assist for construction of information infrastructure.

• International Area Studies Review
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• v.13 no.3
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• pp.873-896
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• 2009

China's the resource diplomacy towards Africa as successful results that are difficult to find precedents even within the world's diplomatic community. These results was after having its first diplomatic contact with Africa, during the Bandung Conference of 1955, China supported the armed independence movement of each colony in Africa. These several material and immaterial ad and sacrifice continued for over half a century and they could be see as the products of the Cold War that was created. The importance of the argument, how did and international relation that began as an idea extend into the spheres of politics and economics, has resurfaced. With this objective, the purpose of this research is to understand the initial stages of Chinese versus African policies that started with the first official contact between China and Africa, centered on the 1995 Bandung Conference and the 1957 Afro-Asian People's Solidarity and Study the development of the ensuing relationship.

• Asia Pacific Journal of Business Review
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• v.2 no.1
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• pp.1-20
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• 2017

The model of success in South Korea from a pariah state coming from the ruins of the Korean War into a member of the Organization for Economic Cooperation and Development (OECD) with a trillion dollar economy is encouraging. The Korean economic experience in terms of entrepreneurship and poverty reduction is an intriguing jig saw puzzle to researchers. This paper looks at Korean entrepreneurship history from the 1960s and how it shaped the contemporary sustainable economic development success of the Korean economy. Using a qualitative approach, the study used the Korean case study in comparison with Sub Saharan Africa to explore five powerful lessons on how the region can replicate the Korean entrepreneurship experience. The study shows that entrepreneurship was key to the radical transformation of its economy and government was instrumental in latent nurturing of Korean entrepreneurial spirit.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.28 no.1
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• pp.90-105
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• 2020

This research investigates the export strategy for pioneering a new market of Advanced Pilot Trainer T-50, a business unit of KAI company, and increasing its market share. The export strategy is proposed based on the Corporate Marketing Model along with the market oriented concept. Specific sales strategies are extracted in consideration of product analysis, market analysis, and integration of product and target market. Therefore, six countries in Africa are selected as the primary target markets on account of their market potentials. In addition, T-50 is repositioned to 'T-50Af' as 'high price competitive and multi-role trainer.' The business implications include the expansion of the market in Africa and the pursuit of the consistent development and growth of T-50.

• Korea Trade Review
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• v.44 no.3
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• pp.271-287
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• 2019

This paper reviews and analyzes the ethical issues of multinational corporations (MNCs) in Africa. First, we find that the transparency and institutions of a host country have a negative relationship with the number of ethical violations of the MNCs. Second, this covers the effects of industry characteristics on each category of ethical issues such as the human rights and the environment. Based on the database of "Ethical Consumer", we show that the Auto, Chemical, Finance, and Telecommunication industries are more likely to violate human rights issues, and that Mining, Oil, Cosmetics, and Chemical industries are more likely to pollute the environments. Further, the country of origin does matter: the US and Asian companies are more likely to be involved with the business ethics violations than are their European counterparts.