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Cloud-Enabled E-Governance Framework for Citizen Centric Services

Journal of Computer and Communications 2020年第7期8卷 63-78页

作者： jara muda Sisay Tumsa Amin Tuni Durga Prasad Sharma Bule Hora University Bule Hora Ethiopia Arba Minch University Arba Minch Ethiopia AMUIT MOEFDRE under UNDP & Research Adviser MAISM-RTU Kota India

In the modern arena, the Information and Communication Technologies (ICTs) have been playing a vital role in every walks of our day to day life. In order to enhance the ICT capacity and align with the global technology transformations, the developing countries have started introducing the computerization and automation processes at different levels of the governments. The several research studies revealed that the existing legacy of governance system and their services in current state have several issues and challenges in terms of timeliness, cost of services, delay in service delivery, time-bound availability of services (24/7/365), inefficiency services, ease of service and discomforts, poor service collaboration, absence of responsiveness, and limited security of sensitive information/documents. A significant question is still unanswered that how to bring the Citizens and Government bodies closer for alleviating the aforementioned issues and challenges of existing government system services. This research paper aims to investigate the issues and challenges in the current status of Governance and partial E-Governance systems which encompass the computerization or automation process. The research designs a cloud framework for effective delivery of citizen centric services in general and Ethiopia as a specific case study. After rigorous analysis of prior research efforts, along with primary survey and interview, it was clearly observed that cloud computing can be an alternative instrumental for significant transformation of governmental service delivery. The research paper used a mix of exploratory and constructive research design and methodology with qualitative & quantitative data analysis approach. Finally, a Cloud Based E-Governance (CBEG) Framework is designed for the delivery of Ethiopian Citizen Centric Services. The validation, evaluation and acceptance test of the framework proves that the revealed knowledge can provide a significant transformation towards

关键词： E-Governance Framework Cloud Computing Citizen Centric Hybrid Cloud

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Post-fire recovery of Puya raimondii, vegetation and birds in the puna of Huascarán National Park, Perú

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Journal of Mountain Science 2024年第1期21卷 20-32页

作者： Mery L.SUNI Giovana P.VADILLO César ARANA Enoc jara-PENA Letty SALINAS M.Estela PONCE Paul M.RAMSAY Plant Physiology Laboratory Faculty of Biological SciencesUniversidad Nacional Mayor de San MarcosLima 15081Peru Natural History Museum Universidad Nacional Mayor de San MarcosLima 15072Peru Applied Phytology Laboratory Faculty of Biological SciencesUniversidad Nacional Mayor de San MarcosLima 15081Peru Department of Statistics Faculty of Mathematical SciencesUniversidad Nacional Mayor de San MarcosLima 15081Peru Department of Chemical and Biological Sciences Universidad de las Américas PueblaSan Andrés Cholula CP Cholula CP 72810Mexico

A large fire of 233 ha in Huascarán National Park in Peru provided an opportunity to compare plant and bird responses in burned and nearby unburned zones of the puna. Heights and live diameters of flagship Puya raimondii rosettes(assigned to four broad developmental phases), plant communities(66 species in 24 families and nine growth forms) and bird communities(77 species in six trophic guilds) were monitored after the fire. Although no mortality was observed, Puya raimondii plants were affected by the fire, losing approximately 60% of their photosynthetic area across all developmental phases, but recovered quickly during the first two years after fire. The comparison of Puya rosette recovery after fire was complicated by the changes in live rosette diameter for unburned plants, which showed plasticity of photosynthetic area linked to seasonal and annual fluctuations in precipitation in this relatively dry environment(decreased by 26% for mature adult plants over the study period). Fire caused an immediate change in the density, biomass and composition of vegetation. Although the species present remained similar, their abundances changed significantly immediately after the fire, with notable reductions in dominant tussock grasses. This provided opportunities for other plants, resulting in higher postfire diversity of plant species, genera, families and growth forms. In turn, the changes in vegetation after fire affected the composition of birds according to their trophic guild. Granivores largely disappeared,generalists were mostly unaffected, and other guilds showed a more complex response. As the vegetation recovered, most displaced birds returned within approximately one year.

关键词： Burning Plant biomass Trophic guilds Andes Giant rosette plants

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Nagata rings

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Frontiers of Mathematics in China 2015年第1期10卷 91-110页

作者： Pascual jara Department of Algebra University of Granada 18071-Granada Spain

Let A be a commutative ring. For any set P of prime ideals of A, we define a new ring Na（A, P）： the Nagata ring. This new ring has the particularity that we may transform certain properties relative to P to properties on the whole ring Na（A, P）; some of these properties are： ascending chain condition, Krull dimension, Cohen-Macaulay, Gorenstein. Our main aim is to show that most of the above properties relative to a set of prime ideals P（i.e., local properties） determine and are determined by the same properties on the Nagata ring （i.e., global properties）. In order to look for new applications, we show that this construction is functorial, and exhibits a functorial embedding from the localized category （A, P）-Mod into the module category Na（A,P）-Mod.

关键词： Cohen-Macaulay Gorenstein Krull Nagata rings 13BA15 13B30 13F20 13F05 16S85

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Phosphorylated tau as a toxic agent in synaptic mitochondria: implications in aging and Alzheimer’s disease

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Neural Regeneration Research 2022年第8期17卷 1645-1651页

作者： Angie K.Torres Bastián I.Rivera Catalina M.Polanco Claudia jara Cheril Tapia-Rojas Laboratory of Neurobiology of Aging Centro de Biología Celular y Biomedicina(CEBICEM)Facultad de Medicina y CienciaUniversidad San SebastiánSede Los LeonesSantiagoChile

During normal aging,there is a decline in all physiological functions in the *** of the most affected organs is the brain,where neurons lose their proper synaptic function leading to cognitive *** is one of the main risk factors for the development of neurodegenerative diseases,such as Alzheimer’s *** of the main responsible factors for synaptic dysfunction in aging and neurodegenerative diseases is the accumulation of abnormal proteins forming *** most studied brain aggregates are the senile plaques,formed by Aβpeptide;however,the aggregates formed by phosphorylated tau protein have gained relevance in the last years by their *** is reported that neurons undergo severe mitochondrial dysfunction with age,with a decrease in adenosine 5′-triphosphate production,loss of the mitochondrial membrane potential,redox imbalance,impaired mitophagy,and loss of calcium buffer ***,abnormal tau protein interacts with several mitochondrial proteins,suggesting that it could induce mitochondrial ***,whether tau-mediated mitochondrial dysfunction occurs indirectly or directly is still unknown.A recent study of our laboratory shows that phosphorylated tau at Ser396/404(known as PHF-1),an epitope commonly related to pathology,accumulates inside mitochondria during normal *** accumulation occurs preferentially in synaptic mitochondria,which suggests that it may contribute to the synaptic failure and cognitive impairment seen in aged ***,we review the main tau modifications promoting mitochondrial dysfunction,and the possible mechanism ***,we discuss the evidence that supports the possibility that phosphorylated tau accumulation in synaptic mitochondria promotes synaptic and cognitive impairment in ***,we show evidence and argue about the presence of phosphorylated tau PHF-1 inside mitochondria in Alzheimer’s disease,which could be considered as an early event

关键词： age pathology aging Alzheimer’s disease hippocampus memory mitochondria PHF-1 phosphorylated tau synaptic mitochondria tau

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Pesticide food safety standards as companions to tolerances and maximum residue limits

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Journal of Integrative Agriculture 2015年第11期14卷 2358-2364页

作者： Carl K Winter Elizabeth A jara Department of Food Science and Technology University of California

Allowable levels for pesticide residues in foods, known as tolerances in the US and as maximum residue limits （MRLs） in much of the world, are widely yet inappropriately perceived as levels of safety concern. A novel approach to develop scientifically defensible levels of safety concern is presented and an example to determine acute and chronic pesticide food safety standard （PFSS） levels for the fungicide captan on strawberries is provided. Using this approach, the chronic PFSS level for captan on strawberries was determined to be 2 000 mg kg-1 and the acute PFSS level was determined to be 250 mg kg-1. Both levels are far above the existing tolerance and MRLs that commonly range from 3 to 20 mg kg-~, and provide evidence that captan residues detected at levels greater than the tolerance or MRLs are not of acute or chronic health concern even though they represent violative residues. The benefits of developing the PFSS approach to serve as a companion to existing tolerances/MRLs include a greater understanding concerning the health significance, if any, from exposure to violative pesticide residues. In addition, the PFSS approach can be universally applied to all potential pesticide residues on all food commodities, can be modified by specific jurisdictions to take into account differences in food consumption practices, and can help prioritize food residue monitoring by identifying the pesticide/commodity combinations of the greatest potential food safety concern and guiding development of field level analytical methods to detect pesticide residues on prioritized pesticide/commodity combinations.

关键词： pesticide residues food safety tolerances maximum residue limits (MRLs) regulation reference dose captan strawberries

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Historical fluxes of metal and metalloids in an aquatic ecosystem affected by land-use change and mining activities in northwestern Mexico

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International Journal of Sediment Research 2023年第5期38卷 724-738页

作者： Ochoa-Contreras Roberto jara-Marini Martín Enrique Ruiz-Fernández Ana Carolina Sanchez-Cabeza Joan Albert Meza-Figueroa Diana Pérez-Bernal Libia Hascibe Posgrado en Ciencias Centro de Investigación en Alimentación y Desarrollo Unidad Hermosillo 2. Centro de Investigación en Alimentación y Desarrollo Unidad Hermosillo Unidad Acad emica Mazatlán Instituto de Ciencias del Mar y Limnología Universidad Nacional Autónoma de M exico Departamento de Geología División de Ciencias Exactas y Naturales Universidad de Sonora Rosales y Encinas

Freshwater reservoirs are essential owing because of their ecological, economic, and social *** are particularly vulnerable to contamination, as of metal and metalloids, derived from anthropogenic activities like mining. The temporal variations in trace element concentrations(arsenic(As),mercury(Hg), chromium(Cr), copper(Cu), nickel(Ni), lead(Pb), and zinc(Zn)), enrichment, fluxes, and possible sources were evaluated by studying two sediment cores from the La Angostura(ANG) Reservoir(northwest Mexico), using210Pb geochronology. The enrichment factors showed from null to minor enrichment for most elements, but moderate to severe enrichment of mercury(Hg). Most trace element concentrations had a detrital origin, and notable Hg concentration increases since the past decade were associated with severe drought periods, likely resulting from wildfires. The observed sediment concentrations of As and Hg can cause adverse effects on biota in the ecosystem since they are above the probable effect level(PEL). Development of strategies for metal attenuation in this reservoir is recommended and metals should be controlled until specific ecotoxicological studies are performed.

关键词： Aquatic ecosystems ~(210)Pb geochronology Mining activities Metals Metalloids Enrichment factors

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Mineralogical and petrographic analysis on the flake graphite ore from Saba Boru area in Ethiopia

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International Journal of Mining Science and Technology 2020年第5期30卷 715-721页

作者： Allah D.jara Girma Woldetinsae Amha Betemariam Jung Yong Kim School of Materials Science and Engineering Jimma Institute of TechnologyJimma UniversityJimmaEthiopia The Ministry of Mines Petroleum and Natural GasAddis AbabaEthiopia Debre Berhan University Debre BerhanEthiopia School of Chemical Engineering Jimma Institute of TechnologyJimma UniversityJimmaEthiopia

The mineralogy and petrography of natural graphite in Saba Boru of Ethiopia indicate that there exists flake graphite with a slightly oval structured fine size according to our study on thin and polished ***,for estimating the carbon content in graphite,the ASTM-C561,the test method for ash in a graphite sample,was *** characterizing graphite,x-ray diffraction,x-ray fluorescence,inductively coupled plasma mass spectroscopy,and scanning electron microscopy were also *** analysis of ore samples determined that the average compositions are 63.35%SiO2,15.45%Al2O3,2.36%Fe2O3,2.07%K2O,less than1%others,and loss-on-ignition(LOI)in the range of^4.74%–37.42%.The total carbon content of graphitic ore ranged from 4.11%to 33.14%.Importantly,when graphite is concentrated through floatation,its average purity and recovery are 92.97%and 90.82%,***,once the graphite concentrates are treated with hydrofluoric acid,the average value attains a high grade of 96.48%***,the average ash content is 81.93%(pre-flotation)and 3.1%(post-flotation),***,after beneficiation,a silica is identified as a major gangue(85.88%),usable as a raw material for other purposes such as ***,these graphite-bearing rocks seem to be worth exploring for commercialization opportunities.

关键词： Mineralogy Petrography Flake graphite Flotation Saba Boru Ethiopia

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Purification,application and current market trend of natural graphite:A review

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International Journal of Mining Science and Technology 2019年第5期29卷 671-689页

作者： Allah D.jara Amha Betemariam Girma Woldetinsae Jung Yong Kim School of Materials Science and Engineering Jimma Institute of TechnologyJimma UniversityJimma P.O.Box 378Ethiopia Defense Engineering College Bishoftu P.O.Box 1041Ethiopia The Ministry of Mines Petroleum and Natural GasAddis Ababa P.O.Box 486Ethiopia School of Chemical Engineering Jimma Institute of TechnologyJimma UniversityJimma P.O.Box 378Ethiopia

Graphite has a stacked planar sp2-hybridized C6 ring structure,displaying a polymorphism with rhombohedral,hexagonal,and *** on its structure-property relationship,it affords a variety of technologically innovative applications or performances in industries,such as lithium-ion batteries,fuel cells,two dimensional graphene,water purification,electronics,fiber optics,spintronics,refractories,electrical products,electric vehicles,*** monetary value of graphite depends largely on carbon content and flake ***,the physical separation of graphite from its ore body is known to be very expensive,energy intensive and ***,this study extensively describes a current purification method for producing high-quality graphite material with impurities reaching about 10–100 mg/kg,attracting a lot of end *** also describes the potential applications of graphite materials and identifies the future scope of a new market,depending on material ***,the current and future graphite-mining countries are investigated in details.

关键词： Graphite Purification Graphene Lithium-ion battery Market Technology

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Influence of steel jacket thickness on the RC bridges' seismic vulnerability

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Journal of Traffic and Transportation Engineering(English Edition) 2019年第1期6卷 15-34页

作者： Bertha Olmos José Manuel jara Gerardo Gómez Guillermo Martínez Department of Civil Engineering Universidad Michoacana de San Nicolas de Hidalgo

The seismic demands of bridges subjected to strong earthquakes are mostly concentrated on piers. The main objective of this study is to assess the seismic vulnerability of retrofitted bridges with steel jackets. It analyzes the influence of the steel jacket thickness on the seismic capacity and demand of bridges. The bridges in study have two simple supported spans with superstructure composed by AASHTO type girders and a substructure formed with one circular pier over a stiff foundation. They are located on the Pacific coast of Mexico that is a zone of high seismicity. The bridges seismic capacity are evaluated through nonlinear static analyses and the shear force and displacement demands were determined using capacity spectra with a group of 10 real accelerograms from a subduction source. The response spectra were scaled to several peak ground accelerations(PGA) with the aim to estimate four damage scenarios linked each one to a probability of exceedance in a specific period, for return periods in the range of 72-3500 years that represent service level and maximum considered earthquake. Results show that the confining effect provided by the steel jackets substantially improves the seismic performance of the bridges piers. The increase of jacket thickness guides to important increments on columns base shear capacity, and the influence of the steel jacket thickness depends on the limit state and bridge slenderness ratio.

关键词： Steel jacket Piers’retrofit Subduction earthquakes RC piers’vulnerability

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THEMIS,the new kid on the block for T-cell development

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Cellular & Molecular Immunology 2017年第9期14卷 721-723页

作者： Janyra A Espinoza Evelyn L jara Alexis M Kalergis Facultad de Ciencias Biologicas Departamento de Genética Molecular y MicrobiologíaMillennium Institute on Immunology and ImmunotherapyPontificia Universidad Catolica de ChileSantiagoChile Facultad de Medicina Escuela de MedicinaDepartamento de EndocrinologíaPontificia Universidad Catolica de ChileSantiagoChile

Understanding T-cell development is a major goal of the immunology field and is crucial for the elucidation of the mechanisms behind self-tolerance and the occurrence of autoimmune disorders.T-cell development is a co... 详细信息

关键词： MIS arise development

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