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Publicatii proprii

Clustering of Approaches to Microbiological Image Enhancement and Classification Based on Buser and Baroni-Urbani’s Algorithm and Dragomirescu’s Homogeneity

Even though microbial imagery had constantly benefited upon technical developments, the analysis of microbial images did not record the same progress. However, analytical tools had been developed in conjunction with remote sensing imagery, and are available for other fields of study as well. When importing such approaches, it is necessary to understand their detailed functioning in order to envisage eventual problems and improve the correctness and

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Spatial approach to the assessment of anthropogenic impact on biodiversity based on the Nomenclature of Territorial Units for Statistics (NUTS) applicable to Romania

Based on the spatial scale, authors distinguish several levels of biodiversity: α diversity (for an ecosystem), ß diversity (for ecosystems within a complex), γ diversity (for a regional complex of ecosystems), and δ diversity (for a macro-regional complex of ecosystems). Taking into account this “diversity of diversities”, the paper recommends a hierarchy of methods that could be used to assess the impact of urban and spatial plans on biodiversity.

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GIS assessment of landform diversity covered by natural protected areas in Romania

The richness of the natural heritage of Romania pleads for the need of conserving its geodiversity and biodiversity. The natural protected areas (reserves) should reflect the national biogeographical diversity. Geographical Information Systems provide a methodology to assess whether this conservation goal is met. This paper focuses on employing the GIS methodology to assess whether existing natural protected areas reflect the national geodiversity,

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Ethical Issues in Epidemiological Data Analysis

The use of statistical tools requires a certain professional ethic, regardless the field of application. In epidemiological studies, statistical ethics refer to choosing the proper design of the study, knowing the advantages, disadvantages and limitations of each type, based on the study hypotheses. Statistical ethics also relate to the analysis of data, through the choice of appropriate methods and tests, knowing their advantages, disadvantages

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Orientation of communication routes and balanced regional development

Territorial development depends on territorial discontinuities, provided that the region is born of discontinuities, lives through them and is killed by them. Moreover, the equilibrium, as a goal of territorial cohesion, aims to reduce the gaps between regions, paying a special attention to deeply disadvantaged areas. The answer of the European Union consists of the concept of polycentricity, relying on many factors, including accessibility, which

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Land cover and use changes focused on the urbanization processes in Romania

Given the spatial dimension of urban (urbanization, deurbanization, urban restructuring etc.) and industrial (exploitation of natural resources) processes, Coordination of Information on the Environment Programme (CORINE) data provide an image of land cover/use dynamics in territorial statistical units - administrative units and development regions. This study employed ordinary kriging interpolation to depict how these processes are reflected at

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GIS analysis of an area representative for the Romanian hardly accessible mountain regions with a complex and high-valued touristic potential

The crucial importance of mountain regions in the socioeconomic and environmental cohesion policies is underlined by key documents in Romania as well as in the European Union. However, the lack of a unique definition or set of criteria used to delineate the mountain regions, in order to analyze their characteristics constitutes a barrier to the elaboration of a common strategy for their development. This study has created a methodology based upon

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GIS-based assessment of the landform distribution of 2100 predicted climate change and its influence on biodiversity and natural protected areas in Romania

Potential effects of climate change include loss of biodiversity and ecodiversity due to direct influences and habitat changes and impacts on agricultural systems resulting into the decrease of productivity. While direct assessment is rarely possible, the evaluation methodology focused on statistical modelling. This study used the Geographical Information Systems to look at the spatial distribution of 2100 predicted temperatures in Romania by landform

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Long-term dynamics of zooplankton in the Matita and Merhei shallow lakes (the Danube Delta, Romania). 1. Diversity and abundance

The present paper presents significant changes occurred in the multi-annual dynamics of zooplankton diversity and abundance (1980-2007), under the pressure of human-induced eutrophication in two shallow lakes specific for the Danube Delta. Zooplankton community from lakes Matita and Merhei was characterized by high species richness but low abundance values until 1981, in ecological conditions unaffected by eutrophication. For the next ten years,

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The July Surface Temperature Lapse in the Romanian Carpathians

Based on July land surface temperature (LST) in the Romanian Carpathians derived from MODIS (Moderate Resolution Imaging Spectroradiometer) images, this paper investigates the vertical thermal lapse and the influence of several factors. The astronomical parameters, atmospheric circulation and geographical factors are relatively similar in the area of interest, so that the influence of elevation, aspect, and land cover becomes more relevant at regional

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