588 research outputs found
Local e-government information and service delivery
In this article we present a survey of the websites of 239 Portuguese municipalities. General characteristics of the web sites, available information and online delivery of services were observed. The study was conducted between February and May, 2010. Considering the results, we conclude that, despite the investments made in the past decade, local e-government in Portugal still exhibits medium level development in what relates information dissemination and remains substantially underdeveloped concerning online service delivery. We argue that a cultural breakthrough is needed in order to take full advantage of new technologies in government-to-citizen interactions at the local level in Portugal. © 2011 AISTI
Q-model: Um modelo bidimensional de maturidade para o e-government
In this article we present and discuss the Q-Model - a two-dimensional maturity model for e-government. Although it is the result of a synthesis effort on previously proposed maturity models, it innovates by using two dimensions of analysis: interaction in service delivery; and integration of the service delivery from the client's perspective. This approach allows the classification of a broader spectrum of e-government initiatives and suggests that multiple maturity paths can be followed from traditional face-to-face non-integrated government environments to fully multi-channel and trannsversally integrated e-government scenarios. We argue that the Q-Model contributes to shift the focus from interaction driven e-government development to a development approach that balances interaction with integration concerns. This is especially relevant since governments tend to postpone integration objectives because they are harder to achieve and have less immediate visibility
Adoption of reverse auctions in public e-procurement: The case of Portugal
This study focuses on the adoption and use of electronic Reverse Auctions (eRA) for public procurement in Portugal, between 2013 and 2014. With this objective, we collected and analysed 8646 contract notices of public works, supplies and services for open and restricted procedures. Conclusions were drawn regarding its distribution in terms of Contracting Authorities, their organization and etymology, contracts' objects, types of purchase, type of procedure used, prices, and supporting technology. The study demonstrates that an eRA took place in 0.7% of the procedures, consistent and in line with the results advanced by the European authorities. © 2016 AISTI
Universal behavior of baryons and mesons' transverse momentum distributions in the framework of percolation of strings
In the framework of percolation of strings, we present predictions for the
and for mesons and baryons and for ratios
at LHC energies.Comment: Presented at "Heavy Ion Collisions at the LHC: last call for
predictions", Geneva Switzerland, May 14th-June 8t
Characterization of anti-crotalic antibodies
AbstractCrotalus durissus terrificus, C. d. collilineatus, C. d. cascavella and C. d. marajoensis are responsible minor but severe snake bites in Brazil. The venoms of these snakes share the presence of crotoxin, a neurotoxin comprising of two associated components, crotapotin and phospholipase A2 (PLA2). Treatment of the victims with specific antiserum is the unique effective therapeutic measure. The ability of anti-Crotalus antisera produced by the routine using crude venom to immunize horses or purified crotoxin and PLA2 as individual immunogens was compared. Antisera obtained from horses immunized with C. durissus terrificus crude venom were able to recognize and neutralize not only the toxins presents in C. durissus terrificus, but also the ones present in the venoms from C. d. collilineatus, C. d. cascavella and C. d. marajoensis. Antisera from horses immunized with individual crotoxin or PLA2, although in lesser titers, were also able of recognizing the toxins in all four Crotalus species and neutralize the lethality of the C. d. terrificus venom
The leading particle effect from light quark fragmentation in charm hadroproduction
The asymmetry of and meson production in scattering
observed by the E791 experiment is a typical phenomenon known as the leading
particle effect in charm hadroproducton. We show that the phenomenon can be
explained by the effect of light quark fragmentation into charmed hadrons
(LQF). Meanwhile, the size of the LQF effect is estimated from data of the E791
experiment.
A comparison is made with the estimate of the LQF effect from prompt
like-sign dimuon rate in neutrino experiments. The influence of the LQF effect
on the measurement of nucleon strange distribution asymmetry from charged
current charm production processes is briefly discussed.Comment: 6 latex pages, 1 figure, to appear in EPJ
Chemical features and bioactivities of lactuca canadensis L., an unconventional food plant from Brazilian cerrado
Throughout the world, people’s diet is generally quite restricted regarding the variety of plants used in their daily regime. The Unconventional Food Plant (UFP) Lactuca canadensis L. is an edible species of wild lettuce sparsely described in literature and considered to be native from the eastern and central parts of North America. To valorize this species as potential alternative food, an analysis of its nutritional, chemical, and bioactive properties was performed. The results specify the occurrence of organic acids, mainly quinic acid (127.9 ± 0.6 g/kg dry weight (dw)), polyunsaturated fatty acids (65.3%), among which are linolenic acid (44.4 ± 0.4 %), and tocopherols, mostly α-tocopherol (61.2 ± 0.7 mg/kg dw). Additionally, eight phenolic compounds were also identified, among which luteolin-O-glucuronide was found in larger amounts in both infusion and hydroethanolic extracts (5.46 ± 0.09 and 4.6 ± 0.1 mg/g dw, respectively). Carbohydrates and proteins were the main macronutrients (603 ± 1 and 177.5 ± 0.3 g/kg dw, respectively), followed by ashes (166.5 ± 0.9), indicative of a great amount of minerals. Additionally, good antioxidant and antibacterial activities were detected in the analyzed extracts. In general, our results contribute to extend the range of different, unexploited, and nutritionally balanced plant foods, such as Lactuca canadensis, that can and should be included in the daily diet.The authors are grateful to the Foundation for Science and Technology (FCT, Portugal) for
financial support by national funds FCT/MCTES to CIMO (UIDB/00690/2020) and national funding
by FCT, P.I., through the institutional scientific employment program-contract for L.B., A.F. and M.I.D.,
and through the individual scientific employment program-contract for J.P. (CEECIND/01011/2018).
The authors are also grateful to the project TRANSCoLAB (0612_TRANS_CO_LAB_2_P), to the
European Regional Development Fund (ERDF) through the Regional Operational Program North
2020, within the scope of Project GreenHealth, Norte-01-0145-FEDER-000042. The authors C.T.P.C.
and V.G.P.S. are grateful to the international mobility departments of the Federal University of Goiás
and the Polytechnic Institute of Bragança for the opportunity for student exchange of C.T.P.C. and
developing of the research with L. canadensis species.info:eu-repo/semantics/publishedVersio
Two-body decays in the minimal 331 model
The two-body decays of the extra neutral boson Z_2 predicted by the minimal
331 model are analyzed. At the three-level it can decay into standard model
particles as well as exotic quarks and the new gauge bosons predicted by the
model. The decays into a lepton pair are strongly suppressed, with and . In the bosonic
sector, Z_2 would decay mainly into a pair of bilepton gauge bosons, with a
branching ratio below the 0.1 level. The Z_2 boson has thus a leptophobic and
bileptophobic nature and it would decay dominantly into quark pairs. The
anomaly-induced decays and , which occurs
at the one-loop level are studied. It is found that and at most. As for the and decays, with H a relatively light Higgs boson, they
are induced via Z'-Z mixing. It is obtained that
and . We also examine the flavor changing neutral
current decays and , which may have branching
fractions as large as and , respectively, and thus may be of
phenomenological interest.Comment: 14 pages, 3 figures, submitted to Physical Review
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