ADC-GERT network parameter estimation model for mission effectiveness of joint operation system

Effectiveness evaluation of the joint operation system is an important basis for the demonstration and development of weapon equipment.With the consideration that existing models of system effectiveness evaluation seldom describe the structural relationship among equipment clearly as well as reflect the dynamic,the analog-to-digital converter-graphical evaluation and review technique(ADC-GERT)network parameter estimation model is proposed based on the ADC model and the joint operation system structure.Firstly,analysis of the joint operation system structure and operation process is conducted to build the GERT network,where equipment subsystems are nodes and activities are directed arches.Then the mission effectiveness of equipment subsystems is calculated by the ADC model.The probability transfer parameters are modified by the mission effectiveness of equipment subsystems based on the Bayesian theorem,with the ADC-GERT network parameter estimation model constructed.Finally,a case study is used to validate the efficiency and dynamic of the ADC-GERT network parameter estimation model.

Hemocoagulase Injection blood anesthesia in joint operation

Objective:To investigate the role of Hemocoagulase Injection used in the joint operation and the effect on the blood coagulable function.Methods:A total of 60 patients who undergoing joint operation in our hospital were randomly divided into two groups.Experiment group(Group A,n=30)was injected with 2 U Hemocoagulase Injection in 5 min before anesthesia induction.The contrast group(Group B,n=30)was treated with 0.9%normal saline in 5 min before anesthesia induction.Then common anesthesia was given to the two groups of patients.The venous blood was withdrawn for blood routine examination,thrombelastography and coagulable function at the time of pre-inducement, end of operation,and in 6 and 12 h after operation.The change of thrombelastograph and coagulable state were monitored during the whole surgery.And the volume of transfusion and hemorrhage between two groups was contrasted. Results:After the use of Hemocoagulase Injection,the operative time was shortened obviously(P<0.05).The volumes hemorrhage and transfusion was obviously smaller in Group A than in Group B(P<0.01).Hemocoagulase Injection did not influence fibrinogen and thrombelastograph of Group A(P>0.05).Conclusion:Hemocoagulase Injection can reduce the volumes of hemorrhage and transfusion and not influence the coagulable function.It is worth using in the joint operation.

Study on the Characteristics of A New Hybrid Mooring System for DualPlatform Joint Operations

As the sustainable exploitation of marine resources develops,dual-platform joint operation has caught increasing attention.Dual-platform joint operation requires smaller relative motion between the two sub-platforms,which is normally difficult to be satisfied by the traditional mooring system.Therefore,a new hybrid mooring system is developed and studied in this article.To ensure safety during platform movements,both the number of anchor chains and the relative motion between the two sub-platforms are reduced in the new hybrid mooring system.By performing numerical simulations based on three-dimensional potential flow theory in AQWA and physical experiments,the performances of both the new hybrid and traditional mooring systems under two different wave conditions(i.e.,working wave and freak wave conditions) are systematically investigated.Regarding the new hybrid mooring system,the relative stability between the two sub-platforms of the new system is better,and the platforms can restore stability faster when affected by freak waves.

A survey on joint-operation application for unmanned swarm formations under a complex confrontation environment

With the rapid development of informatization,autonomy and intelligence,unmanned swarm formation intelligent operations will become the main combat mode of future wars.Typical unmanned swarm formations such as ground-based directed energy weapon formations,space-based kinetic energy weapon formations,and sea-based carrier-based formations have become the trump card for winning future wars.In a complex confrontation environment,these sophisticated weapon formation systems can precisely strike mobile threat group targets,making them extreme deterrents in joint combat applications.Based on this,first,this paper provides a comprehensive summary of the outstanding advantages,strategic position and combat style of unmanned clusters in joint warfare to highlight their important position in future warfare.Second,a detailed analysis of the technological breakthroughs in four key areas,situational awareness,heterogeneous coordination,mixed combat,and intelligent assessment of typical unmanned aerial vehicle(UAV)swarms in joint warfare,is presented.An in-depth analysis of the UAV swarm communication networking operating mechanism during joint warfare is provided to lay the theoretical foundation for subsequent cooperative tracking and control.Then,an indepth analysis of the shut-in technology requirements of UAV clusters in joint warfare is provided to lay a theoretical foundation for subsequent cooperative tracking control.Finally,the technical requirements of UAV clusters in joint warfare are analysed in depth so the key technologies can form a closed-loop kill chain system and provide theoretical references for the study of intelligent command operations.

Study on joint optimization operation scheme forPangduo reservoir and Zhikong reservoir

The cascade hydropower system composed of Pangduo reservoir and Zhikong reservoir are formed on the middlereach of the main Lasahe river. For giving full play of joint compensation effect of the two reservoirs, the paper studied the joint operationscheme for Pangduo reservoir and Zhikong reservoir. Based on the respective operation scheme, a reservoir group joint operationmodel is built, the model is solved by the simulation- optimization method, and then the practical and operational scheme isachieved. The scheme could give full play of the joint regulation and storage effect of the reservoir group and improve effectivelythe utilization factor of hydropower resources.

Autonomous process collaboration framework for C4ISR system interoperation

Interoperability plays an important role in the joint command, control, communication, computer, intelligence, surveillance, reconnaissance(C4 ISR) operations. Coordinating and integrating operational processes to fulfill a common mission are challenged by the ever-changing battlefield and hence requires a cross-organizational process management that produces an autonomous, flexible and adaptable architecture for collaborative process evolution. The traditional business process collaboration pattern is based on the predefined "public-view" perspective and cannot meet the requirement of the joint task operations. This paper proposes a flexible visibility control mechanism and a dynamic collaboration framework for modeling and generating collaborative processes. The mechanism allows collaborators to define a set of visibility rules to generate different views of the private processes for different collaborations, which gives a great flexibility for the collaboration initiator to decide on an appropriate collaboration pattern. The framework supports collaborators to dynamically and recursively add a new process or even a new organization to an existing collaboration. Moreover, a formal representation of the processes and a set of generation algorithms are provided to consolidate the proposed theory.

Simulation-optimization model of reservoir operation based on target storage curves

This paper proposes a new storage allocation rule based on target storage curves. Joint operating rules are also proposed to solve the operation problems of a multi-reservoir system with joint demands and water transfer-supply projects. The joint operating rules include a water diversion rule to determine the amount of diverted water in a period, a hedging rule based on an aggregated reservoir to determine the total release from the system, and a storage allocation rule to specify the release from each reservoir. A simulation-optimization model was established to optimize the key points of the water diversion curves, the hedging rule curves, and the target storage curves using the improved particle swarm optimization （IPSO） algorithm. The multi-reservoir water supply system located in Liaoning Province, China, including a water transfer-supply project, was employed as a case study to verify the effectiveness of the proposed join operating rules and target storage curves. The results indicate that the proposed operating rules are suitable for the complex system. The storage allocation rule based on target storage curves shows an improved performance with regard to system storage distribution.

Superconducting joints using reacted multifilament MgB_(2)wires:A technology toward cryogen-free MRI magnets

The development of superconducting joining technology for reacted magnesium diboride(MgB_(2))conductors remains a critical challenge for the advancement of cryogen-free MgB_(2)-based magnets for magnetic resonance imaging(MRI).Herein,the fabrication of superconducting joints using reacted carbon-doped multifilament MgB_(2)wires for MRI magnets is reported.To achieve successful superconducting joints,the powder-in-mold method was employed,which involved tuning the filament protection mechanism,the powder compaction pressure,and the heat treatment condition.The fabricated joints demonstrated clear superconducting-to-normal transitions in self-field,with effective magnetic field screening up to 0.5 T at 20 K.To evaluate the interface between one of the MgB_(2)filaments and the MgB_(2)bulk within the joint,serial sectioning was conducted for the first time in this type of superconducting joint.The serial sectioning revealed space formation at the interface,potentially caused by the volume shrinkage associated with the MgB_(2)formation or the combined effect of the volume shrinkage and the different thermal expansion coefficients of the MgB_(2)bulk,the filament,the mold,and the sealing material.These findings are expected to be pivotal in developing MgB_(2)superconducting joining technology for MRI magnet applications through interface engineering.

校企共建实践教学基地的运行机制探析

校企共建实践教学基地是实现教育与产业对接的关键环节,通过整合校企资源、创新教学模式、构建科学评价体系,可有效提升学生的实践能力和创新意识。在实践中,校企要系统探讨实践教学基地建设的理论框架、运行机理、创新实践,并以长远视角下的战略规划、合作机制优化和资源整合策略,推动基地高质量运转、人才培养质量持续提升,为现代职业教育发展提供方法借鉴。

基于全局系统的混凝土泵车功率匹配研究

为降低混凝土泵车的能量损失,针对混凝土泵车发动机燃油消耗率和变量泵效率提出一种节能控制策略。首先利用台架试验数据分别建立发动机燃油消耗率模型和变量泵效率模型,针对以节能为驱动的全局系统功率匹配进行控制策略研究。然后在策略中采用基于遗传算法的全局动力系统节能参数匹配方案,合理设置分动箱速比,以全局系统的经济性为优化目标,通过合理调节发动机转速和变量泵排量两项参数,使发动机和变量泵能够同时工作在经济区。仿真结果表明,新型控制策略燃油消耗率有效降低,节能效果明显,对混凝土泵车的节能技术研究具有积极意义。

督脉刺骨术治疗中轴型强直性脊柱炎临床观察:基于督脉筋经理论

目的:探讨在督脉筋经理论指导下,应用督脉刺骨术治疗中轴型强直性脊柱炎的临床效果。方法:选取2023年3月-2024年3月,经半年以上常规治疗效果不明显的中轴型活动期强直性脊柱炎患者50例作为研究对象。采用随机对照试验法,将研究对象分为对照组和观察组,每组各25例。对照组主要给予依那西普注射液控制病情,观察组在此基础上联合督脉刺骨术治疗。治疗1个月后,比较两组患者治疗前后BASFI(强直性脊柱炎功能指数)评分、BathBASDAI(Bath强直性脊柱炎疾病活动度)评分、VAS(脊柱疼痛)评分、关节活动度情况(枕墙距、指地距、Schober试验、晨僵时间)及红细胞沉降率(ESR)、C反应蛋白(CRP)水平。结果:经治疗后,观察组BASFI评分、BASDAI评分、VAS评分、关节活动度及ESR、CRP水平改善明显,与对照组相比差异有统计学意义(P<0.05)。结论:生物制剂依那西普注射液配合督脉刺骨术治疗中轴型强直性脊柱炎疗效更加显著,能有效减轻患者病痛,改善脊柱功能,并且副作用小,安全性好。

Slodkowski Joint Spectrum and Tensor Product

Slodkowski joint spectrum is similar to Taylor joint spectrum, but it has more important meaning in theory and application. In this paper we characterize Slodkowski joint spectrum and generalize some results about tensor product.

42号大号码道岔心轨不解锁问题研究

42号大号码道岔通常设置于高铁正线2条线路交汇处或线路所,而作为不同高铁线路的岔路口,线路所多为无人值守。当道岔出现故障后,维修人员处理时间相对较长,对行车影响较大。为此,沈阳高铁基础设施段经过近3年对京哈高速线、哈大高速线22组42号大号码道岔心轨不解锁问题进行深度分析,发现温度变化和结构因素是造成道岔心轨不解锁的主要原因。通过数据比对和研究试验,采取调整道岔框架尺寸、几何参数、道岔密贴力,以及改进外锁闭配件结构等措施,同时规范42号大号码道岔工电联合整治作业流程,可初步解决42号大号码道岔心轨不解锁问题,有益于保障高速铁路行车安全。

A NOTE ON n-PERINORMAL OPERATORS

The study of operators satisfying σja（T ） = σa（T ） is of significant interest. Does σja（T ） = σa（T ） for n-perinormal operator T ∈ B（H）？ This question was raised by Mecheri and Braha [Oper. Matrices 6 （2012）, 725-734]. In the note we construct a counterexample to this question and obtain the following result： if T is a n-perinormal operator in B（H）, then σja（T ）／{0} = σa（T ）／{0}. We also consider tensor product of n-perinormal operators.

虚拟手术系统联合个体化导航模板在复杂胫骨平台骨折中的应用

目的 分析虚拟手术系统联合个体化导航模板在复杂胫骨平台骨折(TPF)中的应用效果。方法 选取2021年5月至2022年12月我院收治的60例复杂TPF患者,随机分为对照组和观察组,每组30例。2组均行切开复位钢板内固定治疗,对照组患者采用传统手术计划方案治疗,观察组患者采用虚拟手术系统联合个体化导航模板的手术计划方案治疗。比较2组患者骨折复位优良率、手术相关指标、膝关节活动度、膝关节功能、并发症发生率。结果 与对照组比较,观察组患者出血量、术中C型臂透视次数减少(P<0.05),住院时间、骨折愈合时间及手术时间缩短(P<0.05);观察组患者骨折复位优良率高于对照组(P<0.05);与对照组比较,观察组患者术后3个月、6个月膝关节屈曲度、伸展度较大(P<0.05);观察组患者术后3个月、6个月的膝关节协会评分标准(KSS)、纽约特种外科医院(HSS)评分高于对照组(P<0.05);观察组患者并发症发生率低于对照组(P<0.05)。结论 复杂TPF患者切开复位钢板内固定治疗中采用虚拟手术系统联合个体化导航模板能明显提高手术效率,减少手术创伤及并发症,促进患者术后康复,提高骨折复位质量,改善预后。

Hallux rigidus: Joint preserving alternatives to arthrodesis- a review of the literature

Hallux rigidus describes the osteoarthritis of the firstmetatarsophalangeal joint. It was first mentioned in 1887. Since then a multitude of terms have been introduced referring to the same disease. The main complaints are pain especially during movement and a limited range of motion. Radiographically the typical signs of osteoarthritis can be observed starting at the dorsal portion of the joint. Numerous classifications make the comparison of the different studies difficult. If non-operative treatment fails to resolve the symptoms operative treatment is indicated. The most studied procedure with reproducible results is the arthrodesis. Nevertheless, many patients refuse this treatment option, favouring a procedure preserving motion. Different motion preserving and joint sacrificing operations such as arthroplasty are available. In this review we focus on motion and joint preserving procedures. Numer-ous joint preserving osteotomies have been described. Most of them try to relocate the viable plantar cartilage more dorsally, to decompress the joint and to increase dorsiflexion of the first metatarsal bone. Multiple studies are available investigating these procedures. Most of them suffer from low quality, short follow up and small patient numbers. Consequently the grade of recommendation is low. Nonetheless, joint preserving procedures are appealing because if they fail to relief the symptoms an arthrodesis or arthroplasty can still be performed thereafter.

Joint remote preparation of an arbitrary five-qubit Brown state via non-maximally entangled channels

We firstly present a novel scheme for deterministic joint remote state preparation of an arbitrary five-qubit Brown state using four Greenberg-Horme-Zeilinger （GHZ） entangled states as the quantum channel. The success probability of this scheme is up to 1, which is superior to the existing ones. Moreover, the scheme is extended to the generalized case where three-qubit and four-qubit non-maximally entangled states are taken as the quantum channel. We simultaneously employ two common methods to reconstruct the desired state. By comparing these two methods, we draw a conclusion that the first is superior to the second-optimal positive operator-valued measure only taking into account the number of auxiliary particles and the success probability.

Positive-Definite Operator-Valued Kernels and Integral Representations

A truncated trigonometric, operator-valued moment problem in section 3 of this note is solved. Let be a finite sequence of bounded operators, with arbitrary, acting on a finite dimensional Hilbert space H. A necessary and sufficient condition on the positivity of an operator kernel for the existence of an atomic, positive, operator-valued measure , with the property that for every with , the moment of coincides with the term of the sequence, is given. The connection between some positive definite operator-valued kernels and the Riesz-Herglotz integral representation of the analytic on the unit disc, operator-valued functions with positive real part in the class of operators in Section 4 of the note is studied.

Stability of Operator-Valued Truncated Moment Problems

In this note a multidimensional Hausdorff truncated operator-valued moment problem, from the point of view of “stability concept” of the number of atoms of the obtained atomic, operator-valued representing measure for the terms of a finite, positively define kernel of operators, is studied. The notion of “stability of the dimension” in truncated, scalar moment problems was introduced in [1]. In this note, the concept of “stability” of the algebraic dimension of the obtained Hilbert space from the space of the polynomials of finite, total degree with respect to the null subspace of a unital square positive functional, in [1], is adapted to the concept of stability of the algebraic dimension of the Hilbert space obtained as the separated space of some space of vectorial functions with respect to the null subspace of a hermitian square positive functional attached to a positive definite kernel of operators. In connection with the stability of the dimension of such obtained Hilbert space, a Hausdorff truncated operator-valued moment problem and the stability of the number of atoms of the representing measure for the terms of the given operator kernel, in this note, is studied.

A Characterization of the Left Joint Spectrum and Its Applications

In this paper we characterize the left joint spectrum of an n-tuple T = (T1,… ,Tn) of dominant bounded linear operators on a complex Hilbert space H and the unital C-algebra C(T) generated by T1, …,Tn and Ⅰ; moreover, we give an application of this characterization.