757 research outputs found
Towards a Learning Organization Perspective to Supplier Selection for Global Supply Chain Management: an Integrated Framework
No full textSupplier selection procedures have focused on available and measurable data. In this paper the authors present a framework for supplier evaluation in a global environment where data are often unavailable, ambiguous, and difficult to measure. Global supply chains may involve very different relationships, from strategic/long term to tactical/short term relationships. Given the wide range of purchasing situations and the different types of supply relationships it does not seem practicable to identify a single and optimal solution to the problem of defining a suitable evaluation method. The proposed framework is intended to support supply chain managers both in the problem setting stage, in order to identify the most appropriate and effective evaluation method given information on the strategic characteristics of the supply relationship, on suppliers performance, and its localization (what do you mean here), and in problem solving stage, in order to support the assessment of suppliers in a systematic way
Biochemistry and regulation of rubber transferase in parthenium argentatum gray
No full textTypescript (photocopy)VitaMajor subject: Plant PhysiologyWashed rubber particles from stem homogenates of Parthenium argentatum contain a bound rubber transferase which catalyzes the de novo synthesis of a rubber polymer. The bound rubber transferase utilizes the photolabile substrate analogs 2- diazo-3-trifluropropionyloxy-dimethylallyl pyrophosphate and 2- diazo-3-trifluropropionyloxy-geranyl pyrophosphate as allylic cosubstrates for the polymerization reaction. Irradiation of the washed rubber particles with UV light in the presence of Mg2+, isopentynyl pyrophosphate and 2-diazo-3-trifluropropionyloxygeranyl pyrophosphate photo inactivates the rubber transferase. Irradiation of the washed rubber particles with UV light in the presence of Mg2+, isopentynyl pyrophosphate and 8 -[3H ]-2- diazo-3-trifluropropionyloxy-geranyl pyrophosphate labels mainly a polypeptide with a molecular weight of 52,000 as determined by the separation of the extracted protein by sodium dodecyl polyacrylamide gel electrophoresis. The bound rubber transferase was solubilized from the rubber particles with 3-[(cholamidopropyl)dimethylammonio]-1-propane sulfonate and purified. A 52 kD protein represented as a major protein in the sodium dodecyl polyacrylamide gel electrophoresis. These studies, together with the photoaffinity labeling studies, tentatively show the molecular weight of the purified bound rubber transferase to be 52,000. The purified rubber transferase catalyzed the formation of a high molecular weight rubber polymer. Washed rubber particles isolated from Hevea brasiliensis contain a tightly bound rubber transferase capable of catalyzing the de novo synthesis of polyisoprene. Experiments with photoprobe substrates, similar to Parthenium argentatum was performed using the washed rubber particles of Hevea brasiliensis. From these studies a polypeptide of 94 kD has been tentatively identified to be the rubber transferase in Hevea brasiliensis. Rubber transferase activity in stem bark tissue of Parthenium argentatum increased several fold by exposure of the plants to low w inter temperatures. Sodium dodecyl polyacrylamide gel electrophoresis shows that the washed rubber particles proteins were higher in cold induced plant than the plants that were not exposed to cold temperature..
The impact of national culture on e-government implementation: A comparison case study
No full textOver the past decade there has been increasing interest in the IS research literature on the impact of cultural differences on the development and use of information and communications technologies (Ives & Jarvenpaa, 1991; Shore & Venkatachalam, 1995; Tractinsky & Jarvenpaa, 1995, Myers and Tan, 2002, Ali and Brooks, 2008). In this paper the authors explore the influence of national culture on eGov implementation. The authors have conducted a comparative case study in two different countries the UK as a developed country and Sari Lanka as a developing country. The research findings highlight the potential influence of cultural differences on eGov implementation
Settlement-date Accounting for Equity Share Options – Conceptual Validity and Numerical Effects
No full textThis paper shows that settlement-date accounting for equity share options can be seen as an accounting method which implements a shareholder focused residually rewarded partners’ equity view. This equity view represents a simple, natural extension of the shareholder proprietary view. It implicates an equity and income sharing model for accounting which is characterized by specification of both shareholders’ and non-shareholders’ parts of total equity and income. When using this equity and income sharing model, the remeasurements of equity share option obligations made by settlement-date accounting are fully conceptually valid. They represent measurements of one partner group’s share of total equity with effect for another group’s share of total equity and income: the shareholders’ part. Partially, this equity and income sharing model is already the basis for existing accounting standards. It is shown that an intriguing implication of the equity and income sharing model is the fact that treasury shares can hedge present shareholders’ share price risk from the obligation to holders of equity share options. A special hedge accounting construct is needed to account for this hedge effect, and the construct of this model is shown. Numerical simulations are used to illustrate the long run expense effects for shareholders from equity share options by settlement-date accounting both when the expense effects are unhedged and when they are hedged with treasury share holdings. The results demonstrate that the expenses resulting from settlement-date accounting for equity share option awards are significantly higher on average than the expenses resulting from grant-date accounting. And they show that the cost of equity, the share price volatility and the lifetime of the equity share options are important determinants for the size of the differences in total expenses, which in a long run perspective is to be expected from the use of these two alternative accounting models for equity share options. The simulation results demonstrate that hedging with treasury share holdings is very effective to stabilize expenses resulting from options granted to employeesNo keywords;
In-situ microwave irradiation synthesis of ZnO-graphene nanocomposite for high-performance supercapacitor applications
No full textIndia–Africa Partnerships for Food Security and Capacity Building
No full textSmallholder farmers across the drylands of Africa and Asia face similar challenges—low agricultural productivity, lack of profitable alternative livelihoods, lack of access to technology, capital, and markets, low resilience to face climate change and other issues. The challenge before
African countries is to transform agriculture from the predominantly subsistence orientated smallholder systems to more sustainable, efficient and market-orientated ones which create jobs for the youth on a rapidly growing continent. International Crops Research Institute for the Semi- Arid Tropics (ICRISAT) provides a global platform for regular knowledge exchange between agricultural research and development professionals from Africa and India
Genetic analyses of micropropagated and regenerated plantlets of banana as assessed by RAPD and ISSR markers.
No full textA cultivar of dessert banana, namely, Nanjanagudu
Rasabale (NR), classified under group “silk” (of genotype
AAB), is seriously under the threat of extinction due to its
susceptibility to bacterial wilt and bunchy-top virus disease.
A regeneration protocol using tissue culture method was
developed (Venkatachalam et al. 2006), where a large
number of plantlets were regenerated from leaf base
explants. Simultaneously, a micropropagation protocol was
also developed where high levels of up to 53.28 μM of
benzylamino purine (BAP) and 55.80 μM of kinetin (Kn)
were used. The progressive increase of cytokinins levels
resulted in concomitant increase in shoot number, with a
maximum of 80 shoot buds per segment in BAP (31.08 μM).
The plantlets were analyzed for their genetic stability using
randomly amplified polymorphic DNA (RAPD) and inter
simple sequence repeats (ISSR) markers. A total of 50 RAPD
and 12 ISSR primers resulted in 625 distinct and reproducible
bands showing homogeneous RAPD and ISSR patterns. Band
intensity histogram of each gel confirmed their monomorphic
nature with no genetic variation among the plantlets analyzed.
The present study has established for the first time that the
regeneration and rapid micropropagation protocol developed
through the present study will be of great use in conserving the
endangered cultivar – NR – without risk of genetic instability
On r-dynamic chromatic number of some brick product graphs C(2n, 1, p)
No full textAn r-dynamic coloring of a graph G is a proper coloring c of the vertices such that vertical bar c(N(v))vertical bar >= min{r,d(v)} for each vertex v is an element of V(G). The r-dynamic chromatic number of a graph G is the minimum k such that G has an r-dynamic coloring with k colors. In this paper, we obtain the r-dynamic chromatic number of brick product graphs
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