Structured flowchart( SFC) and Automatic code generation based on SFC( CG-SFC) have been widely used in software requirements,design and testing phases. Some CG-SFC tools such as Rhapsody have the ability to build flo...Structured flowchart( SFC) and Automatic code generation based on SFC( CG-SFC) have been widely used in software requirements,design and testing phases. Some CG-SFC tools such as Rhapsody have the ability to build flowchart and generate code,but they do not check whether a given flowchart is correct or structural. For unstructured error ‘goto'statements will be generated randomly. We proposed three algorithms and some error recognition criteria to solve those problems. Structure recognition algorithm can recognize Selection,While/for and do-while structures. Error recognition algorithm incorporating criteria can check all the errors. At last,we develop a CG-SFC system,and compared with existing Rhapsody,it shows that the proposed algorithms are correct and effective.展开更多
目的探讨质量持续改进在降低药物使用错误率中的应用效果。方法成立护理部药品管理质控小组,运用网络信息化报告系统平台进行全程质量监控,通过戴明循环法(Plan-Do-Check-Act,PDCA)总结问题、制定改进措施。对比质量持续改进前(2022年1...目的探讨质量持续改进在降低药物使用错误率中的应用效果。方法成立护理部药品管理质控小组,运用网络信息化报告系统平台进行全程质量监控,通过戴明循环法(Plan-Do-Check-Act,PDCA)总结问题、制定改进措施。对比质量持续改进前(2022年1—6月)、后(2022年7—12月)药物使用错误情况变化。结果改进后的给药差错发生率为0.03‰,低于改进前的0.08‰(P<0.05);改进后的个人数字助理(personal digital assistant,PDA)执行率、考核合格率高于改进前,差异有统计学意义(P<0.05)。结论成立专项质量持续改进小组,动态分析原因,提出并落实改进措施,有效降低给药差错发生率。展开更多
针对极化码在中短码长时纠错性能的不足,提出了一种基于错误集的极化码改进串行抵消列表(Successive Cancellation List of Polar Codes Based on Error Set,ES-SCL)译码算法。该算法首先根据极化码的信道特性构造错误集,在极化码编码...针对极化码在中短码长时纠错性能的不足,提出了一种基于错误集的极化码改进串行抵消列表(Successive Cancellation List of Polar Codes Based on Error Set,ES-SCL)译码算法。该算法首先根据极化码的信道特性构造错误集,在极化码编码时根据错误集中的元素设置奇偶校验(Parity Check,PC)位,其余位置则放置信息比特和冻结比特,译码器在译码PC位时,每条路径通过校验函数得到PC位的比特估计,不执行路径分裂和剪枝,其余位置则执行SCL译码。仿真结果表明,在加性高斯白噪声信道下,当码长为512,码率为0.5,误块率为10^(-5),最大译码列表数为8时,相较于PC-PSCL译码算法以及CA-SCL译码算法,所提出的ES-SCL译码算法获得了约0.18和0.15 dB的增益;当码长为256,码率为0.5,误码率为10^(-5),最大译码列表数为8时,相较于CA-SCL,PC-PSCL译码算法,获得了约0.3和0.35 dB的增益;此外,采用部分比特分裂译码的ES-SCL译码算法可以在误块率与PC-PSCL译码算法几乎相同的情况下,减少约50%的排序次数,具有更低的译码复杂度。展开更多
The checking survey in Open mine is one of the most frequent and important work.It plays the role of forming a connecting link between open mine planning and pro- duction.Traditional checking method has such disadvant...The checking survey in Open mine is one of the most frequent and important work.It plays the role of forming a connecting link between open mine planning and pro- duction.Traditional checking method has such disadvantages as long time consumption, heavy workload,complicated calculating process,and lower automation.Used GPS and GIS technologies to systematically study the core issues of checking survey in open mine. A detail GPS data acquisition coding scheme was presented.Based on the scheme an algorithm used for computer semiautomatic cartography was made.Three methods used for eliminating gross errors from raw data which were needed for creating DEM was dis- cussed.Two algorithms were researched and realized which can be used to create open mine fine DEM model with constrained conditions and to dynamically update the model. The precision analysis and evaluation of the created model were carried out.展开更多
CAD model with nominal dimension is implemented in interference checking of assembly simulation of aircraft complex parts at present, which causes inadequate availability. In order to address this challenging issue, i...CAD model with nominal dimension is implemented in interference checking of assembly simulation of aircraft complex parts at present, which causes inadequate availability. In order to address this challenging issue, interference checking method with tolerance based on assembly dimension chain was proposed. Worst case and maximum error probability of tolerance of composing loop were used, and CAD models were respectively re-constructed and inserted into simulation system. Before dynamic interference checking, engineering semantic interference condition was set to assembly requirements. Finally, the interface checking result was a basis for reasonability of assembly process and tolerance. A prototype system was developed based on the above research.展开更多
Based on the property that high degree variable nodes within an irregular LowDensity Parity-Check (LDPC) code have more powerful error-correcting capability than that of low degree variable nodes, a group of irregular...Based on the property that high degree variable nodes within an irregular LowDensity Parity-Check (LDPC) code have more powerful error-correcting capability than that of low degree variable nodes, a group of irregular LDPC codes with Unequal Error Protection (UEP)property is designed in this letter. Simulation results show that the transmission quality of the image may be effectively improved with this class of irregular LDPC code.展开更多
系统级封装(System in Packet,SiP)技术将多个子系统集成在一个封装内,具有组装方式灵活、研发周期短等优势,在电子设备小型化的进程中具有广阔的发展前景.在SiP的设计流程中,原理图设计是否正确往往决定了整体设计的成败.然而,原理图...系统级封装(System in Packet,SiP)技术将多个子系统集成在一个封装内,具有组装方式灵活、研发周期短等优势,在电子设备小型化的进程中具有广阔的发展前景.在SiP的设计流程中,原理图设计是否正确往往决定了整体设计的成败.然而,原理图设计中出现的连接性错误通常需要工程人员花费大量时间进行查找对比,从而确定错误的位置.为了提高原理图连接性错误检查的效率,提出了一种应用于SiP系统级封装原理图设计阶段的连接性规则检查错误反标工具,由工具命令语言(Tool Command Language,TCL)开发.该工具以插件形式集成于OrCAD Capture CIS X具中,可以配合已有的原理图规则检查工具,使用户可以通过图形界面获取并分析规则检查工具生成的有效错误信息,并将错误信息清晰直观的反标于原理图的相应位置.通过对由26页原理图组成的测试系统进行错误反标测试,该工具可以在数秒内将原理图中的连接性错误信息反标在原理图的对应位置,使设计人员可以快速定位错误的位置,有效的提高了原理图设计阶段连接性检查的效率.展开更多
基金Sponsored by the National Natural Science Foundation of China(Grant No.61402131)the China Postdoctoral Science Foundation(Grant No.2014M551245,2016T90293)+1 种基金the Heilongjiang Postdoctoral Science Foundation(Grant No.LBH-Z13105)the Fundamental Research Funds for the Central Universities(Grant No.HIT.NSRIF.201651)
文摘Structured flowchart( SFC) and Automatic code generation based on SFC( CG-SFC) have been widely used in software requirements,design and testing phases. Some CG-SFC tools such as Rhapsody have the ability to build flowchart and generate code,but they do not check whether a given flowchart is correct or structural. For unstructured error ‘goto'statements will be generated randomly. We proposed three algorithms and some error recognition criteria to solve those problems. Structure recognition algorithm can recognize Selection,While/for and do-while structures. Error recognition algorithm incorporating criteria can check all the errors. At last,we develop a CG-SFC system,and compared with existing Rhapsody,it shows that the proposed algorithms are correct and effective.
文摘目的探讨质量持续改进在降低药物使用错误率中的应用效果。方法成立护理部药品管理质控小组,运用网络信息化报告系统平台进行全程质量监控,通过戴明循环法(Plan-Do-Check-Act,PDCA)总结问题、制定改进措施。对比质量持续改进前(2022年1—6月)、后(2022年7—12月)药物使用错误情况变化。结果改进后的给药差错发生率为0.03‰,低于改进前的0.08‰(P<0.05);改进后的个人数字助理(personal digital assistant,PDA)执行率、考核合格率高于改进前,差异有统计学意义(P<0.05)。结论成立专项质量持续改进小组,动态分析原因,提出并落实改进措施,有效降低给药差错发生率。
文摘针对极化码在中短码长时纠错性能的不足,提出了一种基于错误集的极化码改进串行抵消列表(Successive Cancellation List of Polar Codes Based on Error Set,ES-SCL)译码算法。该算法首先根据极化码的信道特性构造错误集,在极化码编码时根据错误集中的元素设置奇偶校验(Parity Check,PC)位,其余位置则放置信息比特和冻结比特,译码器在译码PC位时,每条路径通过校验函数得到PC位的比特估计,不执行路径分裂和剪枝,其余位置则执行SCL译码。仿真结果表明,在加性高斯白噪声信道下,当码长为512,码率为0.5,误块率为10^(-5),最大译码列表数为8时,相较于PC-PSCL译码算法以及CA-SCL译码算法,所提出的ES-SCL译码算法获得了约0.18和0.15 dB的增益;当码长为256,码率为0.5,误码率为10^(-5),最大译码列表数为8时,相较于CA-SCL,PC-PSCL译码算法,获得了约0.3和0.35 dB的增益;此外,采用部分比特分裂译码的ES-SCL译码算法可以在误块率与PC-PSCL译码算法几乎相同的情况下,减少约50%的排序次数,具有更低的译码复杂度。
基金the Ph.D.Program Research Foundation from MOE of China(20060147004)Research Foundation from Liaoning Technical University(04A02001)
文摘The checking survey in Open mine is one of the most frequent and important work.It plays the role of forming a connecting link between open mine planning and pro- duction.Traditional checking method has such disadvantages as long time consumption, heavy workload,complicated calculating process,and lower automation.Used GPS and GIS technologies to systematically study the core issues of checking survey in open mine. A detail GPS data acquisition coding scheme was presented.Based on the scheme an algorithm used for computer semiautomatic cartography was made.Three methods used for eliminating gross errors from raw data which were needed for creating DEM was dis- cussed.Two algorithms were researched and realized which can be used to create open mine fine DEM model with constrained conditions and to dynamically update the model. The precision analysis and evaluation of the created model were carried out.
基金Supported by the National Natural Science Foundation Project of China (No.50905087)the National Science and Technology Major Project of China (2012ZX04010041)the Aeronautical Science Foundation Project of China (2010ZE52057)
文摘CAD model with nominal dimension is implemented in interference checking of assembly simulation of aircraft complex parts at present, which causes inadequate availability. In order to address this challenging issue, interference checking method with tolerance based on assembly dimension chain was proposed. Worst case and maximum error probability of tolerance of composing loop were used, and CAD models were respectively re-constructed and inserted into simulation system. Before dynamic interference checking, engineering semantic interference condition was set to assembly requirements. Finally, the interface checking result was a basis for reasonability of assembly process and tolerance. A prototype system was developed based on the above research.
文摘Based on the property that high degree variable nodes within an irregular LowDensity Parity-Check (LDPC) code have more powerful error-correcting capability than that of low degree variable nodes, a group of irregular LDPC codes with Unequal Error Protection (UEP)property is designed in this letter. Simulation results show that the transmission quality of the image may be effectively improved with this class of irregular LDPC code.
