This paper introduces several new asynchronous pipeline designs which offer high throughput as well as low latency. The designs target dynamic datapaths, both dualrail as well as single-rail. The new pipelines are latchfree and therefore are particularly well-suited for fine-grain pipelining, i.e., where each pipeline stage is only a single gate deep. The pipelines employ new control structures...

External disturbance is an important cause of underground pressure pipeline damage, which leads to accidents, and it crucial study the risk damage caused by external come up with proper prevention control measures. We reviewed literature on identification pipelines due was conducted, a list factors formed. Based factors, fault tree analysis carried out disturbances, measures were proposed throu...

Abstract In the present study, a water transmission pipeline under steady conditions is modeled followed by examining transient flow created failure of pumps in pipeline. This 31 km from Kerman, Iran. The software analysis results were compared with those numerical model for laboratory test to validate modeling. While flows are pump failure, various areas pipelines will be affected waves produc...

The internal inspection of corrosion in large natural gas pipelines is a fundamental task for the prevention possible failures. Photos and videos provide direct proof defects. However, implementation this technique limited by fast robot motion poor lighting conditions, with high-quality images being key to its success. In work, we developed gas-driven pipeline endoscopic (GDPER) visual inner wa...

The sealing performance of end fittings is very important for offshore oil and gas pipelines. To investigate the sealing behavior of a ring-shaped wedge seal, global and local numerical models of the ring–pipe interaction have been developed based on the finite-element method. First, the sealing process of the ring under pressure is simulated. Second, a criterion for the penetration of fluid pr...

The dynamic responses of existing pipelines are great significance to be studied in blasting excavation the arch cover method. In this paper, Shi Kui Subway Station Line 5 Dalian, China, is selected as a case study. A 3D numerical simulation model established analyze dynamics characteristics subjected vibration, with triangular pattern describing blast hole pressure. verified by comparing pipel...

Next generation sequencing (NGS) has been leading the genetic study of human disease into an era of unprecedented productivity. Many bioinformatics pipelines have been developed to call variants from NGS data. The performance of these pipelines depends crucially on the variant caller used and on the calling strategies implemented. We studied the performance of four prevailing callers, SAMtools,...

Liquid pressure is a key parameter for detecting and judging faults in hydraulic mechanisms, but traditional measurement methods have many deficiencies. An effective non-intrusive method using an ultrasound-based technique to measure liquid pressure in small diameter (less than 15 mm) pipelines is presented in this paper. The proposed method is based on the principle that the transmission speed...

The feasibility of a wireless system is examined for propagation inside an oil and gas well pipeline. bore environment modeled as circular aluminium pipe treated metallic microwave waveguide. experimentation test bed was based on the nominal diameters commercially available pipelines. At transceivers, half-wave dipole antennas operating at 2.5 GHz were employed. Due to excitation frequency encl...