To analyze the incidence and progression of overactive bladder (OAB) symptoms following radical prostatectomy for prostate cancer patients and to identify related risk factors.
Emerging smart grid applications analyze large amounts of data collected from millions of meters and systems to facilitate distributed monitoring and real-time control tasks. However, current parallel data processing systems are designed for common applications, unaware of the massive volume of the collected data, causing long data transfer delay during the computation and slow response time of smart grid systems. A promising direction to reduce delay is to jointly schedule computation tasks and data transfers. We identify that the smart grid data analytic jobs require the intermediate data among different computation stages to be transmitted orderly to avoid network congestion. This new feature prevents current scheduling algorithms from being efficient. In this work, an integrated computing and communication task scheduling scheme is proposed. The mathematical formulation of smart grid data analytic jobs scheduling problem is given, which is unsolvable by existing optimization methods due to the strongly coupled constraints. Several techniques are combined to linearize it for adapting the Branch and Cut method. Based on the topological information in the job graph, the Topology Aware Branch and Cut method is further proposed to speed up searching for optimal solutions. Numerical results demonstrate the effectiveness of the proposed method.
In this study,three concentrations of sugarcane production by agent(1.67,2.50,5.00 mL/L) were released to three sugarcane varieties(ROC22,ROC10 and Yuanlin 6)through the buried drip irrigation.The effect of the root absorption of sucrose-cane promoter was discussed,and the best concentration of rhizosphere drip irrigation of sugar cane production was found.The results show that,comparing to the control,three treatments all reduced the activities of Acid-converting enzyme and Malic enzyme in the leaves,increased the activity of neutral-converting enzyme and peroxidase,which could boost the restoration of the absorptive capacity of the root and improve the plant physiological and biochemical characteristics.The release of sucrose-yield promoter had no obvious effects on the plant height and diameter,which may be related with the release time.All treatments increased the sugar contents than contrast,and 2.50 mL/L treatment was the best.
The DNA content of the epithelium cells and the characteristics of cell proliferation cycle of various phase of malignant transformation were analysed by flow-cytometry. Comparison has been made amony three cell lines withdifferent proliferation capacityf33the normal esophgeal epithelium(NRE),the anaplasticepithelium induced by NSEE(DRE) and RE25 -3 (malignant transformation cell from DRE) Without using carcinogen in vitro .The experimental results showed that, NRE cells and DRE :ells have similar DNA content, DI-1.0, while the DI of various generations of the kE25-3 cells incerased to 1.60--3.36. The analysis of the cell proliferation cycle showed that the percentage of S phase cells was 5.04% in NRE, 29.92% in DRE, while in R-E5-3 it increased froml0.62%to 45.85% much higher than NRE and DRE. When RE25-3 was transplanted to the nude mice (RE25/N) its S phase cell decreased markedly which impress that the proliferation capacity of the cell may be affected by the immunity of the host.
By means of chemical composition testing, scanning electron microscopy observation, metallographic observation and hardness gradient detection etc, analysis of the typical failure samples from a well-known brand GD8020×1100 ball screw unit in the fatigue test was carried on. Results show that there is no obvious surface wear of the ball screw, showing the normal contact fatigue failure. But severe surface wear happens on the raceway of nut A with obvious flaking and many local cracks; which is the main reason leading to the failure of ball screw unit. So effective measures to avoid earlier failure of the ball screw unit can be put forward by controlling the steel quality strictly and improving the hardness and depth of the hardened layer on the raceway of nut A.
In terms of enhancing the spectrum-sharing capability of the Internet of vehicles (IoV), the integrated sensing and communication (ISAC) systems of the communication transmission and radar detection in the IoV are discussed. Firstly, the optimal power allocation of communication and radar is considered, respectively, and the joint optimization problem of maximizing the communication rate and the Fisher information (FI) of radar sensing is constructed. Then, an adaptive optimization weight factor is introduced to optimize the power allocation of the ISAC system, to achieve a trade-off performance between sensing and communication in the IoV system. Subsequently, the alternating optimization fractional programming and KKT (AO-FP-KKT) algorithm is proposed based on the coupled characteristics of the problem. This algorithm introduces dual variables to construct the Lagrange function, combines fractional programming architecture, and utilizes KKT conditions to obtain closed-form solutions. In particular, the scope of the dual variable is analyzed in detail and proved strictly. Finally, the numerical simulation results show that the effectiveness of the proposed algorithm and its superior performance compared with the existing state-of-the-art power allocation methods are demonstrated. The proposed algorithm enhances the system spectrum-sharing capability and achieves a trade-off between sensing and communication performance.
Based on macro morphology, metallographic microstructure, field emission scanning electron microscope observations and microhardness testing, failure analysis of the GCr15 steel balls in the ball screw pair was dealt with in this paper. The experimental results showed that small scratches and pits were evenly distributed on the surface of the A steel ball which showed features of wear failure. Characteristics of the B steel ball surface morphology were contacted to fatigue failure. Microstructure observation on the cross-section of the B steel ball showed that martensite and carbides were uneven distributed which were caused by the uneven elements distribution in the raw materials. It was the main cause of this abnormal failure. Therefore, the quality of the raw materials needed to be strictly controlled and the reasonable heat treatment process should be adopted to ensure the quality of the steel balls.
Failure analysis on the GCr15 bearing steel and the 20CrMo carburized steel nuts was performed after two sets of fatigue tests of GD8020×1100 ball screw pair. By means of scanning electron microscopy observation, energy dispersive analysis and microhardness testing, it is found that there is an obvious indentation, slight pitting and microcracks on the raceway of the GCr15 bearing steel nut and shows the characteristics of contact fatigue failure. The nonuniformity of microstructure and the lower carbon and chromium content in the indentation, leading to local lower hardness, account for the nut failure. While the raceway of the 20CrMo carburized steel nut is more rough with scratches caused by the damaged steel balls so as to show the characteristics of wear failure. Therefore there are different failure ways for the different nuts made by different steels and heat treatments under the same fatigue testing condition.
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