712 research outputs found
T-government for benefit realisation
This paper proposes a model for t-Government and highlights the research agenda needed to
increase understanding of transformational government and the processes involved in
furthering the agenda of the t-Government. In particular, both an operational and a conceptual
model for the effective involvement of citizens and businesses in government functioning
have been proposed. This will help to define an agenda for t-Government research that
emerges from national UK strategy and policy for e-Government. The main threads of t-
Government encompass: (1) A citizen-centric delivery of public services or e-inclusion, (2) A
shared services culture to maximize value added to clients, (3) The effective delivery and
management of resources and skills within government or professionalism. All three threads
should be addressed principally from the perspectives of delivery, evaluation and participation
in view of benefit realisation as envisioned by Government strategic planning and policy
directives (CabinetOffice, 2005). The management of change dimension of these phenomena
have been included in the research agenda. In particular, research is needed to reshape the
discourse towards emphasising a citizen centric approach that defines, develops, and benefits
from public service. Decision makers in Government will need models of Governance that
fulfil transformational objectives. They will also need models of benefits realisation within a
strategic Governance framework. It has been argued that t-Government research should be
addressing these relative voids
Optical properties of ZnO nanocrystals embedded in PMMA
We report in this work the preparation of thin films of ZnO nanocrystals synthesized and dispersed in polymethylmethacrylate using a easy route and deposited in class substrate by spin coating technique. Their structural and optical properties were investigated by X-ray, absorption and photoluminescence spectroscopy. The XRD patterns exhibit sharp peaks at 2Ξ corresponding to the hexagonal (wurtzite) phase diffraction planes. The optically characterization, exhibit a wide absorption band in the range of the study and a large emission band with three peaks at 481.5, 531.09 and at 671.28 nm.The crystallites radius (R) was estimated by applying the effective mass approximation model and was about 1.8 nm. From measurements of second order susceptibilities using harmonic generation technique at λ=1,064 nm in picoseconds regime we deduced λ2eff equal to 5.95Ă10â10  m/V. Obtained λ2eff was four order of magnitude larger compared with ZnO bulk material (2.5 pm/V)
On Non Commutative Calabi-Yau Hypersurfaces
Using the algebraic geometry method of Berenstein et al (hep-th/0005087), we
reconsider the derivation of the non commutative quintic algebra
and derive new representations by choosing different
sets of Calabi-Yau charges . Next we extend these results to
higher complex dimension non commutative Calabi-Yau hypersurface algebras
. We derive and solve the set of constraint eqs
carrying the non commutative structure in terms of Calabi-Yau charges and
discrete torsion. Finally we construct the representations of
preserving manifestly the Calabi-Yau condition and give comments on the non commutative subalgebras.Comment: 16 pages, Latex. One more subsection on fractional branes, one
reference and minor changes are added. To appear in Phy. Let.
Integration of IT in building design and technology: a systems engineering framework
Most concepts of systems engineering (SE) offer a systematic approach to the adaptation of procedures, tools, and standards toward an information-oriented problem in order to analyze, to design, to develop, to manage and to finally implement an effective and a pragmatic integrated information technology solution. This paper proposes a systems engineering framework for integrating information technology (IT) in building design and development. The system view is based on SE good practice and corresponding SE standards. All lifecycle for systems development is covered ranging from the operational concept to operation and maintenance and disposal. The paper is focused mainly at the requirement engineering levels and validation verification issues. In addition, this paper involves a case-study with an important setup where the simulated results are obtained within the use of distributed control and building performance simulation software by run-time coupling. The case-study is also developed in an effective way to illustrate the integration of IT in building design
Ăpandage des margines sur les sols agricoles : impacts environnementaux microbiologiques
LâĂ©pandage agricole des margines (effluents des moulins Ă huile dâolive) constitue une alternative parmi les solutions permettant de les valoriser, mais Ă condition que cette opĂ©ration soit contrĂŽlĂ©e et maĂźtrisĂ©e enrespectant les doses Ă appliquer. Cependant, une rĂ©ticence envers lâĂ©pandage demeure jusquâĂ nos jours, pour des craintes dâĂ©ventuelles incidences microbiologiques nĂ©gatives sur le sol. Ainsi, pour contribuer Ă soulever lâambiguĂŻtĂ© qui a dĂ» rĂ©sulter des avis souvent controversĂ©s envers la valorisation agricole des margines, ce travail a Ă©tĂ© menĂ© au niveau dâune exploitation agricole. En comparaison avec un sol non traitĂ© aux margines (tĂ©moin), les impacts environnementaux microbiologiquesde lâĂ©pandage de 25 et 50 m3/ha ont Ă©tĂ© Ă©tudiĂ©s, pendant quatre mois, au niveau de deux horizons (0-20 cm et 20-40 cm) dâun sol homogĂšne de texture sable limoneux. Les rĂ©sultats obtenus ont rĂ©vĂ©lĂ© que les phĂ©nols provenant des margines ont Ă©tĂ© dĂ©gradĂ©s ou rĂ©organisĂ©s au cours du deuxiĂšme mois aprĂšs lâĂ©pandage. Ni activation, ni inhibition de lâactivitĂ© de la microflore du sol nâont Ă©tĂ© constatĂ©es suite Ă lâĂ©pandage des doses Ă©tudiĂ©es.Mots-clĂ©s : margines, Ă©pandage, environnement, impacts microbiologiques
Synthesis, photophysical and photochemical properties of oxazolone derivatives
Acyloxyphenyl derivatives of oxazolone, which have tree photo active centers, were synthesized and their physicochemical properties are determined by NMR, absorption, fluorescence excitation and emission spectroscopies. The semi-empirical calculations carried out according with the theory of the PM3/Cl level has shown, that at an irradiating of their solutions by UV-light give no possibilities of the photo-Fries reaction. The calculated values are in a good accordance with the experimental ones
Optimization of liquid crystal structures for real time holography applications
In this paper we present results of experiments designed to increase our understanding of the photorefractive effect occurring during processes of dynamic hologram generation in Hybrid Photorefractive Liquid Crystal Structures (HPLCS). We also propose equivalent mathematical model which can be used to optimize those structures in order to obtain the highest diffraction efficiency in possibly shortest time. (C) 2011 Optical Society of Americ
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