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John-James Wilson,Huey-Min Karen-Chia,Kong-Wah Sing,Mohd Sofian-Azirun 한국응용곤충학회 2014 Journal of Asia-Pacific Entomology Vol.17 No.3
Graphiumbutterflies are famous in PeninsularMalaysia for their colourfulwings, yet their taxonomy remains unresolved. The popular guides to Malaysian butterflies, place the species in one, two or three genera and identificationto species using obscuremorphological characters can be difficult, especially for the closely related species,G. bathycles bathycloides and G. chironidesmalayanum.We sequenced the COI mtDNA barcode for Graphiumspecimensin the Museumof Zoology, University ofMalaya to test the utility of DNA barcoding for the identification ofGraphium species. Additionally, we sequenced 28S rRNA to examine, in conjunction with COI, the phylogeneticrelationships of these species and investigate the validity of Pathysa and Paranticopsis as distinct genera. Wefound that all species of Graphium possessed a distinctive cluster of DNA barcodes with the exception of specimensoriginally identified as G. bathycles bathycloides and G. chironides malayanum which shared DNA barcodes. On further examination we found that the morphological determinations were ambiguous as the specimensoverlapped for diagnostic characters reported for each species. The COI and 28S rRNA phylogenetic trees showeda similar topology with Paranticopsis species forming a clade nested within a larger clade also comprising Pathysaspecies. Based on this topology, in order for Pathysa to be a valid genus, at least three other clades withinGraphium s.l. would also have to be raised as genera.
Food Safety and Trade: Winners and Losers in a Non-Harmonized World
( John S. Wilson ),( Tsunehiro Otsuki ) 세종대학교 경제통합연구소 (구 세종대학교 국제경제연구소) 2003 Journal of Economic Integration Vol.18 No.2
Food safety and the trade-off between precaution and increased agricultural exports are at the forefront of policy debate. Moreover, how international standards are set for food safety, can have a profound effect on export prospects for the least developed countries. This study examines the impact of adopting international food safety standards and harmonization of standards on global food trade patterns. The paper estimates the effect of aflatoxin standards in 15 importing (4 developing) countries on exports from 31 (21 developing ) countries. We estimate that world exports would rise by $38.8 billion if an international standard (Codex) were adopted, compared to the current divergent national standards in place.
Food Safety and Trade : Winners and Losers in a Non-Harmonized World
Wilson, John S.,Otsuki, Tsunehiro 세종대학교 국제경제연구소 2003 Journal of Economic Integration Vol.18 No.2
Food safety and the trade-off between precaution and increased agricultural exports ane at the forefront of policy devate. Moreover, how international standards are ser for food safety, can hace a progound effect on export prospects for the least developed countries. This stuy examines the impact of adopting international food safety standards and tharmanization of standards on global food trade patterns. The paper estimates the effect of aflatoxin standards in 15 importing(4 developing) countries on exports from 31 (21 develoging) countries. We estimate that world wxports would rise by $38.8 villion if an international standard (Codex) were adopted, compared to the current divergent national standards in place.
Device Architectures for Enhanced Photon Recycling in Thin-Film Multijunction Solar Cells
Sheng, Xing,Yun, Myoung Hee,Zhang, Chen,Al-Okaily, Ala'a M.,Masouraki, Maria,Shen, Ling,Wang, Shuodao,Wilson, William L.,Kim, Jin Young,Ferreira, Placid,Li, Xiuling,Yablonovitch, Eli,Rogers, John A. Wiley (John WileySons) 2015 Advanced Energy Materials Vol.5 No.1
Kwame Wilson Shamuyarira,Hussein Shimelis,Terence Tapera,Toi John Tsilo 한국작물학회 2019 Journal of crop science and biotechnology Vol.22 No.2
Genetic variation and heritability estimates in early generations are important in identifying superior families that can be targeted for genetic advancement. Early generation selection has been a successful tool to enhance selection efficiency in plant breeding programs. The aim of this study was to select and advance F3 families of wheat relative to their parents for drought tolerance using agronomic traits. Twelve parental lines and 66 newly-developed F3 families were evaluated using a 6x13 alpha-lattice design under drought-stressed and non-stressed conditions. Considerable genetic and phenotypic variation was observed for days to heading, plant height, spike length, kernels per spike, fresh biomass, and grain yield. Expected genetic gains were high for fresh biomass and grain yield. The families LM02xLM05, LM02xLM23, LM09xLM45, and LM13xLM45 were high yielding with high biomass values and are recommended for genetic advancement using single seed descent.
Trade, Infrastructure, and Roadways in Europe and Central Asia: New Empirical Evidence
( Ben Shepherd ),( John S. Wilson ) 세종대학교 경제통합연구소 2007 Journal of Economic Integration Vol.22 No.4
Infrastructure quality is a crucial determinant of trade. To assess the importance of regional infrastructure externalities, we use detailed overland transit information from an original road network database. Gravity model simulations suggest that an ambitious but feasible road upgrade could increase trade by 50% over baseline, exceeding the expected gains from tariff reductions or trade facilitation programs of comparable scope. Cross-country spillovers due to overland transit are very large: total intraregional trade could be increased by 30% by upgrading roads in just three countries-Albania, Hungary and Romania. These results bolster the case for regional coordination of infrastructure investments.
Investing in Port Infrastructure to Lower Trade Costs in East Asia
Kazutomo Abe,JohnS.Wilson 대외경제정책연구원 2011 East Asian Economic Review Vol.15 No.2
We examine how port infrastructure affects trade and role of transport costs in driving exports and imports for East Asia. Existing studies use survey indexes to explain transport costs. These do not link investment in port infrastructure to transport costs. We include in our estimates a variable to represent the congestion of the ports to explain the transport costs. We find that the port congestion has significantly increased the transport costs from East Asia to the United States. Our analysis suggests that increase in port capacity by 10 percent could cut transport cost in East Asia by up to three percent. This translates into a 0.3 to 0.5 percent across-the-board tariff cut.
Modelling of seismically induced storey-drift in buildings
Nelson Lam,John Wilson,Elisa Lumantarna 국제구조공학회 2010 Structural Engineering and Mechanics, An Int'l Jou Vol.35 No.4
This paper contains detailed descriptions of a dynamic time-history modal analysis to calculate deflection, inter-storey drift and storey shear demand in single-storey and multi-storey buildings using an EXCEL spreadsheet. The developed spreadsheets can be used to obtain estimates of the dynamic response parameters with minimum input information, and is therefore ideal for supporting the conceptual design of tall building structures, or any other structures, in the early stages of the design process. No commercial packages, when customised, could compete with spreadsheets in terms of simplicity, portability, versatility and transparency. An innovative method for developing the stiffness matrix for the lateral load resistant elements in medium-rise and high-rise buildings is also introduced. The method involves minimal use of memory space and computational time, and yet allows for variations in the sectional properties of the lateral load resisting elements up the height of the building and the coupling of moment frames with structural walls by diaphragm action. Numerical examples are used throughout the paper to illustrate the development and use of the spreadsheet programs.
Force-deformation behaviour modelling of cracked reinforced concrete by EXCEL spreadsheets
Nelson Lam,John Wilson,Elisa Lumantarna 사단법인 한국계산역학회 2011 Computers and Concrete, An International Journal Vol.8 No.1
Force-deformation modelling of cracked reinforced concrete is essential for a displacementbased seismic assessment of structures and can be achieved by fibre-element analysis of the cross-section of the major lateral resisting elements. The non-linear moment curvature relationship obtained from fibreelement analysis takes into account the significant effects of axial pre-compression and contributions by the longitudinal reinforcement. Whilst some specialised analysis packages possess the capability of incorporating fibre-elements into the modelling (e.g., RESPONSE 2000), implementation of the analysis on EXCEL is illustrated in this paper. The outcome of the analysis is the moment-curvature relationship of the wall cross-section, curvature at yield and at damage control limit states specified by the user. Few software platforms can compete with EXCEL in terms of its transparencies, versatility and familiarity to the computer users. The program has the capability of handling arbitrary cross-sections that are without an axis of symmetry. Application of the program is illustrated with examples of typical cross-sections of structural walls. The calculated limiting curvature for the considered cross-sections were used to construct displacement profiles up the height of the wall for comparison with the seismically induced displacement demand.