Educational Campus as a Paradigm for a Global Innovation - University of Nis Case Study

This paper deals with contemporary discourse regarding urban revival, elaborating the Educational Campus as a paradigm for global innovation. The objective is to examine the significance and capacity of education and its spatial articulation for social incubation and overall urban development. Furthermore through case of the city of Nis it was demonstrated the possibilities for connecting capacities and priorities in order to build a theoretical 'platform' for systematic urban design package in respect to the local resource. The new needed identity for the city of Nis in the time of transition from former industrial into the modern competitive city, can take many forms. Here was argued that, while there is the absence of a formal response to neoliberal governance regarding the strategic urban development, new Educational Campus paradigm might be solution for urban revival. This paper has examined possibilities of formation of the University Campus within the city core as a plausible model for prosper urban transformation of the city. Particularly concerning positive outcomes for the city and the university, the revival and redevelopment of historically important but neglected urban area including city's Fortress in the center of the city is given proposal that was used for model analysis through which some important issues was examined

Village Knez Selo in the Context of Sustainable Development

The paper analyses the present condition of the sustainability elements at the level of a village, and then on the relevant representative sample of the households, according to the parameters of sustainability defined in advance. By definition, such analysis of natural, economic, human and spatial resources provides the scope of the present status, but also defines the sustainability degree, and the capacities and potential directions of development. The obtained results and drawn conclusions served as a platform for the analysis of the future development and transformation of the village and the households’ courtyards as spatial manifestation of households in general. Knez Selo belongs to, by its morphology, compact type of villages, and has been firstly uninhabited since Roman Empire. Position of the higher ground and the excellent view towards Nis’s valley has always been interesting place for living. There are rich complexes of forests and pastures, and favourable conditions for livestock keeping, mild climate, as well as many other natural and environmental values in the village locality, which has caused that in XX century a hospital (later clinic) for lungs diseases had been built nearby the settlement. It is situated 10km from the centre of the city of Nis with decent traffic roads and public transport, this settlement took a turn and during 70’s and 80’s started transformation from rural mostly agricultural village towards a cottage village with substantial number of cottages mainly build by people who live in the city. With steady number of inhabitants a little less than 1000, this settlement belongs to semi-urban areas that have multiple chances for sustainability. Although it is economically weak with no clear developmental discourse, this village have enough natural and human resources for consideration of sustainable future development

A comparative analysis of the corrosive effect of artificial saliva of variable pH on DMLS and cast Co-Cr-Mo dental alloy

Abstract: Dental alloys for direct metal laser sintering (DMLS) are available on the market today, but there is little scientific evidence reported on their characteristics. One of them is the release of ions, as an indicator of the corrosion characteristics of a dental alloy. Within this research, the difference in the elution of metals from DMLS and cast (CM) samples of Co-Cr-Mo dental alloy in saliva-like medium of three different pH was examined by inductively-coupled plasma mass spectrometry (ICP-MS). The obtained results show that the metal elution in artificial saliva from the DMLS alloy was lower than the elution from the CM alloy. The release of all investigated metal ions was influenced by the acidity, both from the DMLS and CM alloy, throughout the investigated period of 30 days. The change in acidity from a pH of 6.8 to a pH of 2.3 for the cast alloy led to a higher increase of the elution of Co, Cr and Mo from CM than from the DMLS alloy. The greatest release out of Co, Cr and Mo was for Co for both tested alloys. Further, the greatest release of all ions was measured at pH 2.3. In saliva of pH 2.3 and pH 4.5, the longer the investigated period, the higher the difference between the total metal ion release from the CM and DMLS alloys. Both alloys showed a safe level of elution according to the ISO definition in all investigated acidic environments

Fulfillment Testing Standards in Design of Pre-School Facilities as a Basis for Architectural and Urban Transformation in the Context of Energy Efficiency

This paper analyses examples of existing kindergartens’ buildings in Serbia in terms of meeting the requirements of spatial capacity and compliance with the minimum standards of required area. Surveyed buildings are dating from various periods. Over time, their environments have undergone numerous changes and interventions, so it is important to establish whether basic requirements are been violated. The second parameter is the degree of land availability, and the existence or nonexistence of free space for possible intervention aimed at changing urban context. Finally, the third aspect is the possibility of using the closest environment to amend the urban environment parameters that would affect the local climate change, reducing outside air temperature in summer or increasing in winter, changing direction or stopping unwanted effects of dominant winds. Namely, by the influence on the input parameters, the need for thermal insulation and the method of ventilation could be changed. The norms are dealing predominantly with the external building envelope and with the insulation, which is necessary, but the last in a series of interventions and by far the most expensive, as a solution. Due to frequent climatic anomalies, global trends are going in the direction of prevention, while interventions have been aimed at the urban environment and the use of space resources. Possible changes in city planning, transformation and revitalization of the area would also have a significant impact on the physical environment and the energy efficiency of buildings

Combining experimental assays with epidemiological surveys to assess indicators of Plum pox virus epidemicity

The huge increase in sequence data those last decades has allowed defining better demarcation criteria for viral taxonomic assignments. For the epidemiologists, such demarcation based on molecular properties, especially at the strain level, is particularly meaningful if one can link the different strains to specific phenotypes (host range, pathogenicity,...) and can thus identify specific epidemic risks for a given host or for a given agro-ecological context. Plum pox virus (PPV, genus Potyvirus, family Potyviridae) is responsible for the sharka disease, the most serious disease of stone fruit trees (Prunus species). In the framework of a collaborative European research program, an important effort has been made to increase the knowledge of PPV genetic diversity (www sharco.eu). Based on molecular criteria (genetic distances and successful recombinant genomes), eight different strains have been distinguished but very little is known about their specific biological and epidemiological properties. Such a situation is due to different reasons: (i) the quarantine pest status of PPV does not allow experiments unless carried out under a strict confinement; (ii) the perennial nature of the Prunus hosts makes the experiments generally long and complicated; and (iii) the epidemiological behaviour of a given strain (or even isolate) can be influenced by specific agro-ecological conditions occurring at a given location. In this study, we combined biological experiments with epidemiological surveys to gain a better knowledge on PPV epidemic properties. A first approach was thus developed for the three most prevalent PPV strains (M, D and Rec) in Europe, which have different geographical distributions. The experimental assays were designed to allow measuring indicators of the key steps of the infection cycle on three Prunus species (apricot, peach and plum): (i) ability for a given strain to infect the host after aphid-mediated (using a clone of Myzus persicae) inoculation, (ii) dynamic of infection in each Prunus host, and (iii) efficiency of the infected Prunus as virus sources (acquisition-transmission assays carried out with M. persicae as vector). In parallel to these experimental assays, surveys have been carried out in Serbia in order to assess (i) the relative prevalence of these three PPV strains known to spread in this country, and (ii) their Prunus host preference. These two approaches bring different but complementary information. The experimental assays did not evidence strict host specificity (pathotype) but rather several cumulative advantages (shorter latency in apricot, better generalization in peach, higher overall aphid transmission rates) that should confer a higher epidemicity to the PPV-M strain. The results from surveys evidenced a strong host specificity (PPV-M on peach), frequent coinfections and independence between infections by the three PPV strains in plum. (Texte intégral

Experimental and MCNP5 based evaluation of neutron and gamma flux in the irradiation ports of the University of Utah research reactor

Neutron and gamma flux environment of various irradiation ports in the University of Utah training, research, isotope production, general atomics reactor were experimentally assessed and fully modeled using the MCNP5 code. The experimental measurements were based on the cadmium ratio in the irradiation ports of the reactor, flux profiling using nickel wire, and gamma dose measurements using thermo luminescence dosimeter. Full 3-D MCNP5 reactor model was developed to obtain the neutron flux distributions of the entire reactor core and to compare it with the measured flux focusing at the irradiation ports. Integration of all these analysis provided the updated comprehensive neutron-gamma flux maps of the existing irradiation facilities of the University of Utah TRIGA reactor

A new EUVE-detected flare star (EUVE J0613-23.9B)

Extreme Ultraviolet Explorer (EUVE) observations have provided detailed spectroscopic and timing studies of several flare stars, including AU Mic (Cully et al., 1993), AD Leo (Hawley et al., 1995) and EQ Peg (Monsignori-Fossi et al., 1995). In this bulletin, we present the EUVE and optical follow-up observations of a newly detected flare star. This star was serendipitously discovered during an EUVE observation of the G star HD 43162 as part of the analysis for the 3rd EUVE Right Angle Program Catalog (Christian, 2002). Analysis of the EUVE spectra obtained during the largest flare (Fe XIX-XXIV emission and a strong 300-650 Å continuum) have been presented elsewhere (Christian et al., 2003). We present optical spectroscopy and results obtained at MT Stromlo Observatory to identify the optical counterpart in § 1, and the long-term EUVE Deep Survey light-curves in § 2

PHOENIX model chromospheres of mid- to late-type M dwarfs

We present semi-empirical model chromospheres computed with the atmosphere code PHOENIX. The models are designed to fit the observed spectra of five mid- to late-type M dwarfs. Next to hydrogen lines from the Balmer series we used various metal lines, e. g. from Fe {\sc i}, for the comparison between data and models. Our computations show that an NLTE treatment of C, N, O impacts on the hydrogen line formation, while NLTE treatment of less abundant metals such as nickel influences the lines of the considered species itself. For our coolest models we investigated also the influence of dust on the chromospheres and found that dust increases the emission line flux. Moreover we present an (electronically published) emission line list for the spectral range of 3100 to 3900 and 4700 to 6800 \AA for a set of 21 M dwarfs and brown dwarfs. The line list includes the detection of the Na {\sc i} D lines in emission for a L3 dwarf.Comment: 14 pages, 18 figure