Papers by Keyword: Stream

Abstract: Retaining structure of homogeneous fluid and granular stream is one of the main criteria for technological process assuring the high quality outcome in many industries, including mechanical engineering and oil & gas industry. For example, in oil and gas industry during the pipeline transportation of oils there is a strong trend for cluster aggregation, and particle coarsening and entanglement. Dehomogenization of particle stream results in reverse dynamics of the stream. The importance of prevention and minimization of small particles coalescence by separating the oil stream leads to the need of improving the properties of the dispersers to boost their efficiency. Our paper investigates the operating principle of the disperser for separating particles (separator), which is designed by the authors. We have considered a particle stream of dispersed structure. We have obtained the conformity with the stability of the disperser operation. To yield the results we use the extremum problems for differential equations. This approach provides strong evidence that there are optimum parameters of the dispersers, which result in better stability of the particle stream.

Abstract: This paper first analyzes the protocol used in video on demand system function, using method. Then this paper introduces the coding technology, according to the characteristics of streaming media network transmission, points out the case for network transmission code. This paper introduces the influence of patching algorithm, greedy algorithm, elegant patch algorithm and cycle algorithm on streaming media height algorithm. The paper presents research on algorithm of video on demand scheduling by protocol of video on demand and multimedia encoding technology.

Abstract: This study was carried out to select the suitable plants for aquatic ecosystem restoration such as lakes and streams. In this study, 2 woody species were investigated for their survival and growth characteristics in the complete and partly flooding condition with 1day, 3days and 5days flooding durations. Flooding tolerance of Rosa multiflora is high and available on half flooded conditions, and no tolerance on complete flooded conditions except 1day flooding. And flooding tolerance of Spiraea prunifolia is high and available when flooded within 3days. Consequentially, it realized that Rosa multiflora and Spiraea prunifolia known as upland terrestrial plants are available in aquatic ecosystems also, and it is realized Rosa multiflora is more effective than Spiraea prunifolia.

Abstract: With the development of the computer network and communication technology, some important information is used to infringe upon by using the Internet and associated communications technology. The paper analyzes briefly the principle of the JAVA stream filtering and data security protection strategy on network of multi-level, then takes some safety measures for data protection by using the JAVA stream filter, mainly focuses on the network transmission of the socket data, in order to protect the security of data, and discussed some related problems of data encryption, finally gives the safety results.

Abstract: The study area comprises of Okada Town and its environs (having combined base population estimate of 78,000) are located in the South Western part of Edo State in Nigeria. The study area is primarily an agricultural and commercial area with prospects of becoming a big town with attendant water supply problems. This study assessed the adequacy of available streams as possible viable sources of water supply with the objective to assess the existing water facilities, capacity and production levels. And further, to carry out comparative analysis of projected target water demand and minimum stream flow. The study area falls under urban water schemes, although in terms of economic and commercial activities, it has the character of rural and semi-urban composition. The 20-year projected population of target water consumers is 124,800 using arithmetic growth rate pattern and 140,877 persons using geometric pattern, both with growth rate of 3%. The 20-projected ultimate water supply is 23,250 m³/day. The existing water schemes have total capacity of 7,600 m³ and effective capacity of 2,512 m³.The present water supply of 1,618 m³/day is very grossly inadequate when compared totarget water demand. Okada; Iguedo and Okhai Streams are the three source streams. The combined and reliable stream yields is226,534m³/day and 103,886m³/day respectively. The maximum stream abstraction is 81,455m³/day. Analysis of water demand, stream yield and projected water demands showed adequacy of the source streams as possible viable sources of water supply.

Abstract: Applicability and hydraulic evaluation of green revetment media which have improved physical structure are evaluated by the hydraulic model experiments. Results of the study on the relative erosion rates of base materials by the location of method and presence of vegetation, the green revetment had stability up to the limit of 1m distance, 1.5kg/m2 water pressure and 2 min of experimental duration. In addition, maintaining good rooting of vegetation would be beneficial to prevent erosion of revetment media during the flood as the resistance to the water pressure increases when the vegetation is applied in the river revetment.

Abstract: Processors using stream architecture can make good use of the on-chip resources and explore the data locality and parallelism. DES algorithm is one of the most popular cipher algorithms. This paper proposes the novel implementation of DES algorithm on stream architecture based on both stream programming model and DES algorithm and the speedup is 1.27 times.

Abstract: Maximal frequent itemsets are one of several condensed representations of frequent itemsets, which store most of the information contained in frequent itemsets using less space, thus being more suitable for stream mining. This paper focuses on mining maximal frequent itemsets approximately over a stream landmark model. A false negative method is proposed based on Chernoff Bound to save the computing and memory cost. Our experimental results on a real world dataset show that our algorithm is effective and efficient.

Abstract: The main parameter which shows the space distribution of the emitted gas components is the rate of concentration decrease by the increase of the distance from the point where the emitted gas appears in the atmosphere. It is considered three different driving forces leading to the spreading of the emitted gas components from the centre of the metallurgical region to its periphery:  diffusion factor – the appearance of the emitted substance is the reason of the local concentration increase, it correlates with the diffusion process;  wind load factor – the wind movement acts always in advantage direction, wind force is not space homogeneous as the diffusion force is;  chemical factor – the intensity of chemical interaction of emitted components with the atmospheric ones influences the space distribution of the interaction products (secondary emissions). The proposed method allows to predict the space-time distribution of the emitted metallurgical gas by various external conditions.