A new explicit quadratic radical function is found by numerical experiments,which is simpler and has only 70.778%of the maximal distance error compared with the Fisher z transformation.Furthermore,a piecewise function...A new explicit quadratic radical function is found by numerical experiments,which is simpler and has only 70.778%of the maximal distance error compared with the Fisher z transformation.Furthermore,a piecewise function is constructed for the standard normal distribution:if the independent variable falls in the interval(-1.519,1.519),the proposed function is employed;otherwise,the Fisher z transformation is used.Compared with the Fisher z transformation,this piecewise function has only 38.206%of the total error.The new function is more exact to estimate the confidence intervals of Pearson product moment correlation coefficient and Dickinson best weights for the linear combination of forecasts.展开更多
This paper presents an efficient parallel algorithm for the shortest-path problem in interval graph for computing shortest-paths in a weighted interval graph that runs in O(n) time with n intervals in a graph. A linea...This paper presents an efficient parallel algorithm for the shortest-path problem in interval graph for computing shortest-paths in a weighted interval graph that runs in O(n) time with n intervals in a graph. A linear processor CRCW algorithm for determining the shortest-paths in an interval graphs is given.展开更多
The primary objective of this study is to assess the impact of a pharmacist-implemented protocol on number of post-operative alvimopan doses. The secondary objective of this study is to assess LOS （length of stay）, ...The primary objective of this study is to assess the impact of a pharmacist-implemented protocol on number of post-operative alvimopan doses. The secondary objective of this study is to assess LOS （length of stay）, in days, before and after protocol implementation. A retrospective chart review was conducted from October 2015 through March 2016 for all laparoscopic colorectal surgeries. Number of post-operative alvimopan doses received and LOS was recorded for each patient that received at least one dose of alvimopan. Comparative data, before protocol implementation, from November 2014 through June 2015 were analyzed against the study data. Number of post-operative alvimopan doses and LOS were recorded. The mean number of doses was 6.41 in the comparator group and 4.25 in the study group （probability size P 〈 0.001）, which did meet statistical significance. Although the secondary objective was not statistically significant, LOS slightly decreased as the mean LOS was 5.01 days in the comparator group versus 4.49 days in the study group （P = 0.256）. At the current price of $120 per capsule, close to $30,000 was saved during the study period, projecting an annual cost savings of approximately $68,000. Results from this study show that pharmacists can play a vital role in cost savings and ensuring appropriate use of certain high-risk medications, like alvimopan, without increasing overall length of stay.展开更多
This work explores the feasibility of a novel predictive control strategy on a power factor correction system. The proposed control strategy allows a significant reduction of the power losses respect to a classical pr...This work explores the feasibility of a novel predictive control strategy on a power factor correction system. The proposed control strategy allows a significant reduction of the power losses respect to a classical predictive control strategy working with a fixed execution time Ts. The proposed control strategy operates with a variable execution time T~, and it has been implemented using a low cost hardware platform based on TI~ TMS320F2812 DSP. The chosen platform is capable to execute a control strategy code with a variable execution time T,. This operation can be performed by setting in proper manner, the timer registers of one of two event manager A/B blocks present on the mentioned DSP （digital signal processor）.展开更多
Simulation is an important and useful technique helping users understand and model real life systems. Once built, the models can run proving realistic results. This supports making decisions on a more logical and scie...Simulation is an important and useful technique helping users understand and model real life systems. Once built, the models can run proving realistic results. This supports making decisions on a more logical and scientific basis. The paper introduces method of simulation, and describes various types of its application. The authors used the method of analysis of the creation and implementation of the programme code. The authors compared parallel instruction of computing defined to pipelined instructions. The power of simulation is that a common model can be used to design a large variety of systems. An important aspect of the simulation method is that a simulation model is designed to be repeated in actual computer systems, especially in multicore processors. For this reason, it is important to minimize average waiting time for fetch and decode stage instructions. The objective of the research is to prove that the parallel operation of programme code is faster than sequential operation code on the multi processor architecture. The system modeling uses methods and simulation on the parallel computer systems is very precise. The time benefit gained in simulation of mathematical model on the pipeline processor is higher than the one in simulation of mathematical model on the multi processors computer system.展开更多
基金Supported by Natural Science Foundation of Tianjin(No.09JCYBJC07700)
文摘A new explicit quadratic radical function is found by numerical experiments,which is simpler and has only 70.778%of the maximal distance error compared with the Fisher z transformation.Furthermore,a piecewise function is constructed for the standard normal distribution:if the independent variable falls in the interval(-1.519,1.519),the proposed function is employed;otherwise,the Fisher z transformation is used.Compared with the Fisher z transformation,this piecewise function has only 38.206%of the total error.The new function is more exact to estimate the confidence intervals of Pearson product moment correlation coefficient and Dickinson best weights for the linear combination of forecasts.
文摘This paper presents an efficient parallel algorithm for the shortest-path problem in interval graph for computing shortest-paths in a weighted interval graph that runs in O(n) time with n intervals in a graph. A linear processor CRCW algorithm for determining the shortest-paths in an interval graphs is given.
文摘The primary objective of this study is to assess the impact of a pharmacist-implemented protocol on number of post-operative alvimopan doses. The secondary objective of this study is to assess LOS （length of stay）, in days, before and after protocol implementation. A retrospective chart review was conducted from October 2015 through March 2016 for all laparoscopic colorectal surgeries. Number of post-operative alvimopan doses received and LOS was recorded for each patient that received at least one dose of alvimopan. Comparative data, before protocol implementation, from November 2014 through June 2015 were analyzed against the study data. Number of post-operative alvimopan doses and LOS were recorded. The mean number of doses was 6.41 in the comparator group and 4.25 in the study group （probability size P 〈 0.001）, which did meet statistical significance. Although the secondary objective was not statistically significant, LOS slightly decreased as the mean LOS was 5.01 days in the comparator group versus 4.49 days in the study group （P = 0.256）. At the current price of $120 per capsule, close to $30,000 was saved during the study period, projecting an annual cost savings of approximately $68,000. Results from this study show that pharmacists can play a vital role in cost savings and ensuring appropriate use of certain high-risk medications, like alvimopan, without increasing overall length of stay.
文摘This work explores the feasibility of a novel predictive control strategy on a power factor correction system. The proposed control strategy allows a significant reduction of the power losses respect to a classical predictive control strategy working with a fixed execution time Ts. The proposed control strategy operates with a variable execution time T~, and it has been implemented using a low cost hardware platform based on TI~ TMS320F2812 DSP. The chosen platform is capable to execute a control strategy code with a variable execution time T,. This operation can be performed by setting in proper manner, the timer registers of one of two event manager A/B blocks present on the mentioned DSP （digital signal processor）.
文摘Simulation is an important and useful technique helping users understand and model real life systems. Once built, the models can run proving realistic results. This supports making decisions on a more logical and scientific basis. The paper introduces method of simulation, and describes various types of its application. The authors used the method of analysis of the creation and implementation of the programme code. The authors compared parallel instruction of computing defined to pipelined instructions. The power of simulation is that a common model can be used to design a large variety of systems. An important aspect of the simulation method is that a simulation model is designed to be repeated in actual computer systems, especially in multicore processors. For this reason, it is important to minimize average waiting time for fetch and decode stage instructions. The objective of the research is to prove that the parallel operation of programme code is faster than sequential operation code on the multi processor architecture. The system modeling uses methods and simulation on the parallel computer systems is very precise. The time benefit gained in simulation of mathematical model on the pipeline processor is higher than the one in simulation of mathematical model on the multi processors computer system.
