Emergent Capabilities for Collaborative Teams in the Evolving Web Environment

This paper reports on our investigation of the latest advances for the Social Web, Web 2.0 and the Linked Data Web. These advances are discussed in terms of the latest capabilities that are available (or being made available) on the Web at the time of writing this paper. Such capabilities can be of significant benefit to teams, especially those comprised of multinational, geographically-dispersed team members. The specific context of coalition members in a rapidly formed diverse military context such as disaster relief or humanitarian aid is considered, where close working between non-government organisations and non-military teams will help to achieve results as quickly and efficiently as possible. The heterogeneity one finds in such teams, coupled with a lack of dedicated private network infrastructure, poses a number of challenges for collaboration, and the current paper represents an attempt to assess whether nascent Web-based capabilities can support such teams in terms of both their collaborative activities and their access to (and sharing of) information resources

NITELIGHT: A Graphical Tool for Semantic Query Construction

Query formulation is a key aspect of information retrieval, contributing to both the efficiency and usability of many semantic applications. A number of query languages, such as SPARQL, have been developed for the Semantic Web; however, there are, as yet, few tools to support end users with respect to the creation and editing of semantic queries. In this paper we introduce a graphical tool for semantic query construction (NITELIGHT) that is based on the SPARQL query language specification. The tool supports end users by providing a set of graphical notations that represent semantic query language constructs. This language provides a visual query language counterpart to SPARQL that we call vSPARQL. NITELIGHT also provides an interactive graphical editing environment that combines ontology navigation capabilities with graphical query visualization techniques. This paper describes the functionality and user interaction features of the NITELIGHT tool based on our work to date. We also present details of the vSPARQL constructs used to support the graphical representation of SPARQL queries

A turning point?: water saving technologies in north Gujarat's groundwater socio-ecology

Irrigation systemsWater conservationCrop managementVermicompostingIncomeWomenFarmers

Analysis framework for the interaction between lean construction and building information modelling

Building with Building Information Modelling (BIM) changes design and production processes. But can BIM be used to support process changes designed according to lean production and lean construction principles? To begin to answer this question we provide a conceptual analysis of the interaction of lean construction and BIM for improving construction. This was investigated by compiling a detailed listing of lean construction principles and BIM functionalities which are relevant from this perspective. These were drawn from a detailed literature survey. A research framework for analysis of the interaction between lean and BIM was then compiled. The goal of the framework is to both guide and stimulate research; as such, the approach adopted up to this point is constructive. Ongoing research has identified 55 such interactions, the majority of which show positive synergy between the two

Commercial Aspects of Self-Help Group Banking in India: A Study of Bank Transaction Costs

There are two outstanding aspects to Nabard’s Linking Banks and Self-Help Groups: with an outreach to 500,000 SHGs and a population of 40m rural poor, it is the largest non-directed microsavings & microcredit program in the developing world; and its bank lending rates – fluctuating at market rates around 7% in real terms – are among the lowest. Is it a commercial proposition for the 17,000 participating bank branches, and perhaps for another 20,000 who might join the program to reach a population of 100m by 2008? We are presenting a methodology for the study of financial products, applied to seven units of three banks in October 2002. The results are indicative only. We applied average cost analysis, attributing all costs duly to each product; and marginal cost analysis, in response to the advice of bank managers to ignore personnel costs of SHG banking because of existing idle capacities. Main performance indicators are non-performing loans, return on average assets, and operational self-sufficiency. Non-performing loans to SHGs were 0%, testifying to the effectiveness of group lending to the very poor. In contrast, consolidated NPL ratios ranged from 2.6% to 18%; and of Cash Credit (CC) and Agricultural Term Loans (ATL) up to 55% and 62%, respectively. Returns on average assets of SHG Banking ranged from 1.4% to 7.5% by average and 4.6% to 11.8% by marginal cost analysis, compared to –1.7% to 2.3% consolidated. The operational self-sufficiency of SHG banking ranged from 110% to 165% by average and 142% to 286% by marginal cost analysis, compared to 86% to 145% consolidated. In contrast, ROA of Cash Credit varied from –10.2% to –0.5% and of ATL from –6.3% to 0.2%; OSS ratios from 54% to 102%. SHG Banking was found to be a robust financial product, performing well in healthy and distressed financial institutions. Self-reliance of SHGs based on internal savings and retained earnings was found to be rapidly growing, exceeding in older groups the volume of bank refinance by an increasing margin. In addition SHGs deposit substantial amounts of savings voluntarily in banks as a reserve for bad debts. In addition to direct effects on bank profits, SHG Banking has indirect commercial effects on banks in terms of improved overall vibrancy in banking activities. Indirect benefits at village level include the spreading of thrift and financial self-reliance and of a credit culture among villagers, microentrepreneurial experience, growth of assets and incomes, the spreading of financial management skills, and the decline of private money lending. Intangible social benefits are reportedly many: self-confidence and empowerment of women in civic affairs and local politics, improved school enrolment and women’s literacy, better family planning and health, improved sanitation, reduction of drinking and smoking among men, and a decline in adherence to local extremism. The future sustainability of SHG Banking hinges on five factors: (a) A sound self-supporting institutional framework is in place. (b) Despite exceptionally low interest rates, linkage banking was found to be viable and profit-making for all financial institutions and SHGs; however, many rural banks require restructuring. (c) SHGs have substantially increased their level of self-reliance and deposited reserves, while banks are constrained by high statutory liquidity requirements. (d) Given the low inflation rate, preservation of the value of resources is no major issue, except in distressed banks. (e) With continually increasing internal funds, effective supervision of SHGs through a delegated system, together with the enforcement of prudential norms in banks and cooperatives, emerges as a major challenge to the long-term sustainability of SHG banking and rural finance in India. Among the topics for further study are: pricing of financial products in a random sample of rural financial institutions; extending SHG Banking to the middle poor; options of delegated supervision for SHGs and cooperatives; collateral for larger loans within SHGs; loan protection through life insurance; and options for individual performance incentives in banks and cooperatives. --

Adiabatic Gate Teleportation

The difficulty in producing precisely timed and controlled quantum gates is a significant source of error in many physical implementations of quantum computers. Here we introduce a simple universal primitive, adiabatic gate teleportation, which is robust to timing errors and many control errors and maintains a constant energy gap throughout the computation above a degenerate ground state space. Notably this construction allows for geometric robustness based upon the control of two independent qubit interactions. Further, our piecewise adiabatic evolution easily relates to the quantum circuit model, enabling the use of standard methods from fault-tolerance theory for establishing thresholds.Comment: 4 pages, 1 figure, with additional 3 pages and 2 figures in an appendix. v2 Refs added. Video abstract available at http://www.quantiki.org/video_abstracts/0905090

The Stellar Initial Mass Function at the Epoch of Reionization

I provide estimates of the ultraviolet and visible light luminosity density at z~6 after accounting for the contribution from faint galaxies below the detection limit of deep Hubble and Spitzer surveys. I find the rest-frame V-band luminosity density is a factor of ~2-3 below the ultraviolet luminosity density at z~6. This implies that the maximal age of the stellar population at z~6, for a Salpeter initial mass function, and a single, passively evolving burst, must be <100 Myr. If the stars in z~6 galaxies are remnants of the star-formation that was responsible for ionizing the intergalactic medium, reionization must have been a brief process that was completed at z<7. This assumes the most current estimates of the clumping factor and escape fraction and a Salpeter slope extending up to 200 M_{\sun} for the stellar initial mass function (IMF; dN/dM \propto M^{\alpha}, \alpha=-2.3). Unless the ratio of the clumping factor to escape fraction is less than 60, a Salpeter slope for the stellar IMF and reionization redshift higher than 7 is ruled out. In order to maintain an ionized intergalactic medium from redshift 9 onwards, the stellar IMF must have a slope of \alpha=-1.65 even if stars as massive as ~200 M_{\sun} are formed. Correspondingly, if the intergalactic medium was ionized from redshift 11 onwards, the IMF must have \alpha~-1.5. The range of stellar mass densities at z~6 straddled by IMFs which result in reionization at z>7 is 1.3+/-0.4\times10^{7} Msun/Mpc^3.Comment: 25 pages, 2 tables, 6 figures, ApJ, in press, v680 n