Fractal geometry is a tool in the analysis and interpretation in Potamology. Delta, is a typical case of alluvial river that occurs at the mouth of the great rivers loaded with a large amount of silt and opens into smooth waters, usually saline (seas and oceans) which has shallow waters and a shelf extended where tides (in most of the cases) are of low intensity and where currents coastline, with different meanings are weak, allowing the appearance, submersible or on surface of bars or a flat surface cone of dejection on which the river it spreads its waters in a web of streams, canals and lakes. A fractal is a geometric entity which, in its spatial development, is multiplying more and more on a smaller scale. An essential characteristic of fractals is that if you look with a magnifying glass, any part thereof, is reproducing at a smaller scale, the figure of the whole fractal. Fractal Analysis of the mouths of the Danube show a particular hydromorphological dynamics with specific mechanisms important for the exchange of energy and matter. The high degree of complexity of the Danube course determines the occurrence of several degrees of freedom in the course of the bed, reflected in an intense development and decreased predictability. On the other hand, the fractal dimension analysis of morphologically homogeneous sections of the course, emphasizes the geometric homogeneity of the lower Danube by similar values thereof. As engineers and scientists, we have become aware that water management involves a holistic and integrated view of a number of distinct systems that would previously have been dealt separately, and consequently there is a need for collaboration with experts from a number of other disciplines. Also we have to take into account the requirement of a range of stakeholders who have a direct interest in Danube Delta ecosystems functions. We have to note the Danube Delta water circulation (DDWCS) system deal with very complex interactions that are not immediately apparent. Simulation modeling has therefore become an important tool in order to understand the behavior under changes to various boundary conditions or internal conditions, such as parameters or even functional representations of different identified phenomena.

Between the 11th and 13th of September 2013 large quantities of rainfall occurred in the upper catchment of river Geru. The precipitations have generated a flash flood with three peaks, with the maximum discharges of 118.00 m3/s recorded on 12th of September 2013, 2300. Simulations of the flash flood were performed alternatively with Mike 11 by DHI - NAM (Nedbør Afstrømning Modele) and with MIKE by DHI –UHM, using radar precipitations as input data. Radar rainfall values were generated by ROFFG (Romanian Flash Flood Guidance) software system in ArcGIS module for determining the area affected by flash floods. The program Mike 11 by DHI – NAM accounts for the water content in up to 4 different storages. As default, NAM uses 9 parameters to represent the Surface zone, Root zone and the Ground water storages. The program Mike 11 by DHI – UHM calculates excess rainfall and determines infiltration losses by four methods. The discharge hydrographs simulated with Mike 11 by DHI program were compared to the discharge measured at the hydrometric station. The amplitude and phase errors are directly dependent of the accuracy of the input data and chosen parameters.

The floods occurred on Moldova River, during 2004-2015 changed the minor bed in Soci area. In this area it is embedded the undergoing Timi?e?ti-Ia?i adduction pipe. The undergoing section morphological changes have influenced the vertical and horizontal minor bed stability. Morphological changes were monitored by topographical surveys. The leveling surveys of research area were updated after each flood. There were made cross section and longitudinal section of the riverbed in the research area. By processing the topographical series of surveys it result the riverbed changes under the action floods. The longitudinal and cross sections indicated the riverbed hydrodynamic erosion parameters. The data collected and processed allowed the design of the breastwork in the area where the headrace ducts under-cross the river.

The principle on which biological analysis is based in order to assess water quality is that throughout organisms evolution, they have adapted to particular environmental conditions. Biological quality elements used to evaluate the ecological potential of barrier lakes are phytoplankton and phytobenthos. The evaluation of the ecological potential in terms of biological elements is obtained by applying the "worst element" principle. The worst potential given by biological elements is the "moderate” potential. During the analysis of the quality state of barrier lakes in the Prut-Bârlad basin, based on biological elements, it was observed a favorable trend in terms of water quality. So if in 2012 there were 4 barrier lakes (with good ecological potential) reaching the environmental objective, in 2014 their number increased to 15 (4 barrier lakes with maximum potential , and 11 with good potential).

This paper intends to analyze antisocial and criminal events in Iasi municipality assesses and finding potential factors that generate this phenomenon. This assessment was necessary to build databases of antisocial events; each event is recorded with all its significant data. For this work was needed antisocial collection events were classified into several types of offenses using online media.

In the latest period, the usage of statistical models in the valuation of real estate properties became very popular among appraisal specialists, bankers and researchers from this field. Many Automatic Valuation Models (AVM) using different statistical and mathematical models like regression, neural networks, and fuzzy logic were proposed and developed with the purpose of assessing the value of a property. Also Computer-Assisted Mass Appraisal (CAMA) became popular for mass valuation of the real estate in fields like taxation or banking sector. The main weakness of an AVM and a CAMA is the absence of the locational analysis of the real estate; even if the spatial component is a main characteristic in establishing the commercial value of a certain property. Geographical Information Systems may be used in order to improve the accuracy of the Automated Valuation Model (AVM) or Computer-Assisted Mass Appraisal (CAMA) by combining the statistical evaluation methods with the spatial locations on property value. The cadastral maps as part of a geographical information system are essential to correct the mathematical models used in Computer Assisted Mass Appraisal. In this article, we analyze the applicability of geographical information system in property assessment, evaluating if the GIS automated models can be a solution for real estate valuation using a case study from the city of Oradea, Romania.

Upgrading water distribution systems in towns imposes the study of water distribution networks, starting from a global vision including the current situation, the management of each element of the system as well as their exploitation, development and optimization. The water distribution system consists of a number of interconnected hydraulic elements, each of them characterized by certain relations among the variables that have been chosen to describe their functioning. Currently, the GIS system has the advantage of enabling the collecting and validation of all available information, leading to the possibility of a coherent data set for the elaboration of a hydraulic model. In order to analyse the running of the system, the current practice restricts the analysis model of these elements, so that the parameters could be molded within the existing simulation systems. The paper presents various possibilities to analyse the functioning of a water distribution system.

Track changes imposed by amending Law 10 on construction quality by Law 177/2015, residential buildings with reduced height (P + 1) are subject to the general rules on quality assurance in construction. This requires the preparation of the technical design verified by law, the execution is mandatory supervised by the technical manager and project supervisor certified by categories of skills. Sensitive execution stages: teaching and landmarks site levelling, excavation for foundations, marking and redrawing, check the verticality and horizontality as the case of structural elements; slopes for sewers and surface platforms can be addressed with great fidelity by using high technology in the field of terrestrial measurements while the specification contains details in this regard.

GIS can be used in tourism as a decision making instrument regarding sustainable planning, impact evaluation and visitor flow management. Tourism has always been considered a suitable environment to expand the horizons of human interests. [1] It is a major factor in the development and exploration of historical, natural and cultural heritage of nations. Therefore, it indirectly serves to improve cultural understanding by both residents and foreigners. Internal tourism creates an understanding and appreciation for local attractions, and consequently improves sustainable tourism.

Accessible sewer collectors in service present a high degree of aging. Rehabilitation of accessible collectors can be differentiated by size and type of wastewater transported. Accessible sewer collectors (large and circular, ovoid, bell or mixed cross section) present specific measures for rehabilitation. Rehabilitation Technology can be with or without digging ditches. Accessible collectors may be rehabilitating with inner and outer works. Hydraulic rehabilitation requires flow parameters analysis for modified geometric sections. Hydraulic rehabilitation requires the analysis of collector walls roughness and its influence on the flow velocity. Research has indicated important changes to the flow section due to silting and hydrodynamic erosion processes. The flow sections were geometric transformed from curved shapes to mixed shapes (curves and lines).The changes of geometrical cross section caused the decreasing of velocity and transported flow by about 15 ... 28%.

The creation and use of spatial databases for the management of public water/sewer utilities in order to be in alignment with the EC standards represent nowadays an important tool in making both their quantitative and qualitative exploitation as efficient as possible. Starting from this aspect, this paper presents the stages in the achievement of spatial databases compiled in a GIs application and an example of converting the specific data on IT support, the building of a relational database, the way the connection between the spatial data and the descriptive ones is achieved within the model. Once these connections are established, the information can be used in various types of analyses and optimization modalities in the water/sewer systems. The large volume of graphic information that can be acquired today imposes its use simultaneously with the necessity of ensuring centralized data control in the database management system.

The issue of 3D modelling is very important nowadays in technical domains and has particular application in general cadastre. In the process of modelling there is a number of software that can create 3D project. The earthquake risk assessment map has been created with programs like Google SketchUp, Autodesk Autocad and ArcMap. In this paper we created a 3D model of an urban area located on Bahlui River Bank Right Street of Iasi. The result of the research is represented by a series of thematic maps for the buildings in the area. The obtained map indicates the presence of second-class seismic mapping for the study area. This assessment requires a technical expertise for the development of risk and the implementation of some limit work that limit the effects of the earthquake.

Taking into account the significant potential of renewable energy sources in Romania, it is reasonable to use it in order to develop Romanian cities and rural regions. There are some current technologies that may be applied to rural sustainable development, such as new-generation photovoltaic panels and systems of passive heating of water. This paper presents an application of Analytic Hierarchy Process for selection of renewable energy sources and technology in context of Central Region of Romania. The option – solar energy have been evaluated based on selected criteria. The objective of our working paper is to analyze the renewable energy development policy in isolated areas of Romania. Renewable sources of energy play an important part in the sustainable supply of energy and in the sustainable economic and social development. Using a GIS model, the aim is to demonstrate which of the analyzed sources of energy is the most convenient to be used in a sustainable system, solar or electric network.

The purpose of this study is to highlight how the Geographic Information System provides permanent access to the updated database and green spaces cadastral map of a particular administrative unit. Green Cadastre emerged from the necessity of creating a management system for green spaces and existing tree species in different administrative units, taking into consideration that the vegetation experiences a dynamic development and structural changes that can be reflected using different GIS applications. Inventory of green spaces was twofold: quantitative (the number of specimens per species, per parcels, quantitative attributes: height, trunk diameter, tree crown) and qualitative (phytosanitary condition of trees, trees belonging to the category of protected species). The result of the study lies in creating a digital map (GIS structure) that contains the distribution of compact green spaces and that emphasizes all green spaces features.

Open source software is that kind of software that can be freely used, changed, and shared (in modified or unmodified form) by anyone. Generally, the open source software is made by many people, and distributed under licenses that comply with the Open Source Definition. There are currently several open source GIS software solutions that imposed themselves in GIS environments and gained ground against proprietary GIS branded solutions. The purpose of the present article is to highlight the characteristics of these freeware solutions and some advantages of using them. Also it shows how are implemented these concepts in MSc. curricula.

The article refers to the calculation of bottom-discharge conduits used in locally sourced dams. In such cases, the foundation terrain is usually elastic. The conduits themselves have either a circular or polygonal cross-section and are made up of reinforced concrete. The length of the conduit is split into sections that are joined together with sealant tape. The article showcases the calculation for the Ibaneasa dam bottom-discharge conduit using the finite element method. There are two scenarios being considered: one in which the conduit is split up into several shorter sections, and one in which only two sections are taken into account – one upstream and one downstream on the dam, with the two being joined in the dam’s axis. The bending momentum is smaller when the number of sections is greater (and their size is diminished).

The main activities of urban landscape planning consists in exposing the strategies, the politics and the programs meant to aid a sustainable development of the environment through the entire national territory and also their proper development according to the legal framework. Along with large scale automation of the technological processes, shows up the need of using a digital support that allow us to obtain a informational system. This kind of system can be used for activities such as: a proper spatial development, protection of natural and built heritage and improvement of living conditions in urban and rural areas.

Reference topographic plan of Romania, in digital format, corresponding to scale 1: 5,000 (TOPRO5) is the unique cartographic support to integration geospatial data for the realization the National Spatial Information Infrastructure - INIS. INIS Geo-portal provides the following functionality: publishing service of metadata; view services and search services as well as data downloading necessary for each user. The application is designed to facilitate of exchange geospatial data resources of a large community of users, providing the tools for search and discovery of spatial data sets and Web services within INSPIRE geo-portal of Romania.

Pumped-storage hydroelectricity is a type of hydroelectric energy storage used by electric power systems for load balancing. The method stores energy in the form of gravitational potential energy of water, pumped from a lower elevation reservoir to a higher elevation in a superior reservoir. This paper presents a theoretical and practical solution on the above theme. The superior reservoir location needs to meet a series of terms listed by the general designer. On the strength of the huge study area, the amount of the involved information, the task of merging the textual and spatial data and the way these above mix all together, the optimum way is to use the geographic information system (GIS) methods.