More and more researchers have put their emphases on peer-to-peer streaming services, which can provide massive and cheap video-on-demand services. Data dissemination is one of the most important open problems when providing peer-to-peer streaming services, including live streaming and videoon-demand. Considering the performance and fault-tolerance of streaming systems, content should be distri...

introduction: users of medical record information in accordance to relying on data and health information, they demand quality. proper storage, maintenance, and archiving of old medical records forms for different purposes has led to lack of enough storage space and retention problems for health services organizations. the objective of this study is to assess the effectiveness of medical record...

In a wide superscalar processor, the amount of time it takes to execute an application depends on the instruction latency and the amount of instruction level parallelism (ILP) that can be extracted from the application. One important factor which influences the instruction latency is the number of cycles it takes to access the register file. Whether it is a CISC architecture or a RISC architect...

There is growing demand for higher bit rates in the access domain due to the emergence of bandwidthhungry applications such as video-on-Demand and file sharing. Gigabit-capable passive optical network (GPON) is the most important PON. In a hybrid wave division multiplexing/time division multiplexing (WDM/TDM passive optical network (PON), Quadrature amplitude modulation (QAM) is proposed as a w...

The decreasing costs of genome sequencing is creating a demand for scalable storage and processing tools and techniques to deal with the large amounts of generated data. Referential compression is one of these techniques, in which the similarity between the DNA of organisms of the same or an evolutionary close species is exploited to reduce the storage demands of genome sequences up to 700 time...

apical extrusion of debris and irrigants during cleaning and shaping of the root canal is one of the main causes of periapical inflammation and postoperative flare-ups. the purpose of this study was to quantitatively measure the amount of debris and irrigants extruded apically in single rooted canals using two reciprocating and one rotary single file nickel-titanium instrumentation systems.sixt...

A pilot scale wastewater treatment plant was designed, constructed and operated on site to treat wastewater from a combined effluent drain. The activated sludge process (ASP) was used at three different hydraulic retention times (HRT) of 12, 10 and 8 hrs at an average MLSS concentration of 3500 mg/L. Under each HRT, the pilot plant was operated for a period of 10-12 weeks. Chemical oxygen deman...

The efforts of modern civilization to create an environment to meet human aspirations have successfully resulted in constant improvements of our lifestyle, but it has increased risks to human and ecological health. This situation has motivated many scientists throughout the world to analyze the environmental factors that can affect our health or ecology and to calculate the levels of risk. In B...

introduction: the aim of this study was to compare digital and conventional radiography in determining the working length of dilacerated canals.methods: thirty nine human extracted single-rooted teeth with root curvature more than 35 degrees were included in this study. after access preparation, a file was inserted into the canal and advanced until the file tip was visualized at the foramen. wi...

Without significant intervention, demand for crude oil could rise by a further 25% by 2035, stemming from its use for transportation, particularly road transport. Many technologies for alternative fuels and substitute transport energy carriers are being researched, but successful implementation of these technologies at scale will require attention to consumer-behavioural and policy challenges a...