DISTRIBUTION OF DATA ON THE WEB

Data are most often represented [1] in tabular form, where each row represents a few records that are described and each column represents some properties of these items. Cells in a table have particular values for these properties. This article shows a sample of data about a school, completed during the school-leaving examination, 2017. We analyze several different strategies on how these data can be distributed on the web. In all these strategies, some data will be represented on a computer while other parts will be represented on another computer.school leaving-examination, data distribution of Web, strategies for the distribution of data on Web, distributed data, RDF solution, semantic web

Cell-Probe Lower Bounds from Online Communication Complexity

In this work, we introduce an online model for communication complexity. Analogous to how online algorithms receive their input piece-by-piece, our model presents one of the players, Bob, his input piece-by-piece, and has the players Alice and Bob cooperate to compute a result each time before the next piece is revealed to Bob. This model has a closer and more natural correspondence to dynamic data structures than classic communication models do, and hence presents a new perspective on data structures. We first present a tight lower bound for the online set intersection problem in the online communication model, demonstrating a general approach for proving online communication lower bounds. The online communication model prevents a batching trick that classic communication complexity allows, and yields a stronger lower bound. We then apply the online communication model to prove data structure lower bounds for two dynamic data structure problems: the Group Range problem and the Dynamic Connectivity problem for forests. Both of the problems admit a worst case $O(\log n)$-time data structure. Using online communication complexity, we prove a tight cell-probe lower bound for each: spending $o(\log n)$ (even amortized) time per operation results in at best an $\exp(-\delta^2 n)$ probability of correctly answering a $(1/2+\delta)$-fraction of the $n$ queries

TENDINŢE DE DEZVOLTARE DURABILĂ ALE TURISMULUI DIN ROMÂNIA

Trends in sustainable development of tourism in Romania. This study focuses on a thorough analysis of tourism in Romania, by underlining the issues that support the prerequisites of sustainable development concept. Firstly, we highlight the management and planning patterns of thermal and mineral water in the current health resorts, where hidrographical resources have been used for centuries and have not yet been exhausted. The tourist potential of the Romanian Carpathians and the Black Sea has enabled the development of various forms of tourism and tourist infrastructure suitable for both primary and derived offer. Romania’s integration into the European Union, as well as its complying with the regulations of market economy have led to establishing a new globalized tourism, based on sustainable development, regarding mainly the cultural and rural tourism

Gastrointestinal stromal tumor (GIST) of the Treitz’s angle– a very rare cause of high bowel obstruction

Gastrointestinal stromal tumors (GIST) are somewhat rare gastrointestinal tumors - approximately 1% to 3% incidence, but they are the most common mesenchymal neoplasms of the gastrointestinal tract. GISTs are usually found in the stomach or small intestine but can occur anywhere within the gastrointestinal tract, even in extremely uncommon locations like duodeno-jejunal flexure. Only 3% – 5% of GISTs are located in the duodenum and tumors occurring in the angle of Treitz are even rarer, most published studies being case reports. These tumors have a size ranging from small lesions to large masses and can cause digestive bleeding or high bowel obstruction. This paper is a case presentation illustrating an emergency situation involving a high bowel obstruction caused by a small tumor with an unusual location in the Treitz’s angle. A large percentage of duodenal GISTs are localized in the third and fourth part of the duodenum and may not be found through standard upper endoscopy; only the barium study of the upper gastrointestinal tract highlights the obstruction point. Preoperative diagnosis is difficult but non-invasive imaging techniques like ultrasonography and computed tomography of the abdomen can be helpful. Recently, targeted therapy with inhibitors of tyrosine kinase receptors (IMATINIB) has been introduced for the management of advanced and metastatic tumors. In our opinion the surgical resection with curative intent is the treatment of choice

A peculiar behaviour of liquid jet impact

Coalescent masses of fluid, formed upon liquid jet impact, should exhibit either dripping or jetting regardless of the distance between the nozzles. The study reveals that above a certain flow rate, by increasing this distance, the coalescent mass enters a dripping state, when only a jetting regime is previously present. This is followed again by a jetting regime before breakup which occurs at a critical distance. The upper limit of this dripping state is achieved when Bond number is equal to unity, this result being valid below a certain critical Reynolds number

The antioxidant activity of selected Romanian honeys

Four types of Apis mellifera honey collected in the eastern region of Romania were screened for their total phenolic content by the Folin-Ciocalteau method, for anti radical power as assessed by DPPHradical scavenging assay, for the FRAP assay-ferric reducing antioxidant power. The antioxidant effect over a substrate sensitive to lipid per oxidation and also the presence of some pigments with antioxidant action in honey-ABS 450 were evaluated. All assays revealed the following order of the obtained values: Lime honey>poly-flower honey>Sea buckthorn honey>Acacia honey

Oilseed rape crop in Romania: research regarding technological alternatives for weed control

Weeds compete against cultivated plants, taking their water, nutrients, light and heat. Weeds proliferation is a major limiting factor for profitable and quality crops, knowing that early weeds proliferation in rape crops may lead to compromised crops in autumn. In order to contribute to finding technical solutions for an effective control of problematic weeds affecting rape crops, cruciferous especially, we carried out a monofactorial experiment with 10 experimental variants. The experiment was carried out during the agricultural year 2011 - 2012 and it took place in South Romania, near Bucharest (in Otopeni, Ilfov County), at “Agricola Otopeni” company, on a red phaeozem soil. Within current research we present the experimental results obtained in 2011 - 2012 related to weeds control on rape crops

Oilseed rape crop in Romania: technological alternatives for weed control

Weeds competition represents an important issue for oilseed rape crop and also a restricting factor in obtaining a costeffective production. In order to control the weeds in oilseed rape crops the farmers can choose today from various technological alternatives, flexible to concrete situations of their own rape area, out of which an important role is the use of herbicides. As have been demonstrated by worldwide researchers the use of plant protection products is one of the most important ways of protecting plants, agricultural production improving and protection of plant products against the harmful organisms including weeds. By analyzing the offer of herbicides products on the Romanian market during last years, it can be noted the existence of a total of 19 registered active ingredients for weed control in oilseed rape crop. These herbicides are mainly focused on weed control by using them in crop post emergency

Stereo MicroPIV measurements in an irrigation nozzle

Irrigation nozzles often feature small serpentine-shaped channels to avoid clogging. Reduced clogging improves the lifetime of the irrigation nozzle, which reduces plastic waste and thereby reduces the impact on the environment. Clogging in micro channels is often suppressed in the presence of three- dimensional (3D) flow structures called vortices. In micro scales the initiation of such 3D microstructures is normally suppressed because of the low Reynolds number inherent to micro scale flows. Passive, zig-zag shaped irrigation nozzles have the potential to induce three- dimensional rotating flow structures around sharp corners, which enhance 3D flows in the channel and thereby reduce clogging. The aim of this study is to identify and characterize such vortices using a Stereoscopic MicroPIV system

IMPLEMENTATION OF CLEAN TECHNOLOGIES IN THE CONTEXT OF SUSTAINABLE DEVELOPMENT

The article presents the concept of sustainable development and its evolution over time. The authors analyse possibilities for promotion of clean technologies within the context of sustainable development. There are presented and analysed advantages of sustainable development and of utilisation of clean technologies for achieving the targets linked with climate changes. The authors have presented and analysed a case study regarding utilisation of a clean technology in an industrial sector. The case study is referring to modification of a furnace through introduction of a heat recovery unit from flue gasses for pre-heating of combustion air. The results of the complex energy, economic and environment analysis show that utilisation of this solution leads to energy and financial savings and to reduction of the environment impact. In conclusion there is shown the importance of the sustainable development and the implications of clean technologies in the energy sector