Theoretical and practical applications of blockchain in healthcare information management

A primary objective of blockchain technology is to address information security and efficiency issues related to existing information sharing systems. For the sharing of health records, little is known about the application of blockchain in management information systems. There are strict regulations for sharing health information due to insecure systems and privacy concerns. To significantly and effectively improve medical diagnosis, it is beneficial to have efficient, reliable, and accurate accessibility to a patient's full medical history. Due to concerns with the security of health systems and privacy concerns, medical histories are not always accessible to healthcare providers. To help increase accessibility options, this research proposes a blockchain-based model that facilitates sharing medical records in a manner that is beneficial to both healthcare providers and patients. Social exchange theory provides the theoretical support for the conceptual model presented. Experimental findings based on 151 participants revealed that the blockchain technology can provide a secure information system and increase patient motivation to share medical records. To show the applicability of the proposed use of blockchain from a practical managerial perspective, we show feasibility by developing an Android software application.     

不完备模糊决策信息系统的粗集模型与精度约简

在不完备信息系统和模糊决策信息系统概念及其粗集模型的基础上,本文提出了不完备模糊决策信息系统的概念,给出了不完备模糊决策信息系统的粗糙集模型,它既不同于不完备近似空间上的信息系统又不同于完备空间上的模糊决策信息系统。该模型是完备模糊决策信息系统和经典决策信息系统粗糙集模型的推广。文中还给出了系统的精度约简概念及其约简算法。     

A framework for incremental construction of real global smart space applications

This article describes a standardised way to build context-aware global smart space applications using information that is distributed across independent (legacy, sensor-enabled, and embedded) systems by exploiting the overlapping spatial and temporal attributes of the information maintained by these systems. The framework supports a spatial programming model based on a topographical approach to modelling space that enables systems to independently define and use potentially overlapping spatial context in a consistent manner and in contrast to topological approaches, in which geographical relationships between objects are described explicitly. This approach is supported by an extensible data model that implicitly captures the relationships between information provided by separate underlying systems and facilitates the incremental construction of global smart spaces since the underlying systems to be incorporated are largely decoupled. The framework has been evaluated using a prototype that integrates legacy systems and context-aware services for multi-modal urban journey planning and for visualising traffic congestion.     

不完备模糊目标信息系统粗集模型与知识约简

在不完备信息系统和模糊目标信息系统的基础上,将不完备近似空间和模糊目标信息系统有机地结台起来,提出了不完备模糊目标信息系统的概念;同时还给出了不完备模糊目标信息系统的粗糙集模型,该模型是完备模糊目标信息系统和经典目标信息系统粗糙集模型的推广。还给出了系统知识约简的一些相关概念及其辨识矩阵的知识约简方法。     

Information filtering for time-delay systems

This paper presents the information filter, which is developed in filtered forms, for time-delay systems which include continuous-time case and discrete-time case. By introducing delay-free observation, the optimal filtering problems for time-delay systems can be converted into multiple steps prediction problems for delay-free systems. Then, the recursive forms for optimal filter are given via innovation approach in Hilbert space. Furthermore, the information filter in Riccati recursions can be derived by using the matrix inversion Lemma to optimal filtering formulas. Finally, the distributed Kalman filter for time-delay systems is designed based on information filter developed.

     

Rough set theory for the interval-valued fuzzy information systems

The notion of a rough set was originally proposed by Pawlak [Z. Pawlak, Rough sets, International Journal of Computer and Information Sciences 11 (5) (1982) 341-356]. Later on, Dubois and Prade [D. Dubois, H. Prade, Rough fuzzy sets and fuzzy rough sets, International Journal of General System 17 (2-3) (1990) 191-209] introduced rough fuzzy sets and fuzzy rough sets as a generalization of rough sets. This paper deals with an interval-valued fuzzy information system by means of integrating the classical Pawlak rough set theory with the interval-valued fuzzy set theory and discusses the basic rough set theory for the interval-valued fuzzy information systems. In this paper we firstly define the rough approximation of an interval-valued fuzzy set on the universe U in the classical Pawlak approximation space and the generalized approximation space respectively, i.e., the space on which the interval-valued rough fuzzy set model is built. Secondly several interesting properties of the approximation operators are examined, and the interrelationships of the interval-valued rough fuzzy set models in the classical Pawlak approximation space and the generalized approximation space are investigated. Thirdly we discuss the attribute reduction of the interval-valued fuzzy information systems. Finally, the methods of the knowledge discovery for the interval-valued fuzzy information systems are presented with an example.     

Synthesis of an information channel in planning goal functioning of space remote sensing systems according to quality criteria

Quality criteria for an image received from optic-electronic complexes of space remote sensing systems and methods of evaluating these quality criteria that allow one to choose parameters of elements of a ground space information channel together with orbital design of space remote sensing systems are considered.     

Two-grid algorithms for some linear and nonlinear elliptic systems

In this paper, several two-grid algorithms are presented. For nonsymmetric linear systems, we propose a two-grid algorithm by using the information of the adjoint operator. The solution of the original systems is mainly reduced to a solution of symmetric positive definite (SPD) systems. For nonlinear systems, we present a two-grid algorithm based on the modified Newton method. The solution of the original systems on the fine space is reduced to the solution of two small systems on the coarse space and two similar linear systems (with same stiffness matrix) on the fine space. It is shown that the accuracy ( ${\mathcal{L}^2}$ norm) obtained by this algorithm is as same as the optimal accuracy derived by using two full Newton steps. Additionally, for more practically applications, the ideas of these algorithms can be also extended to the multilevel case. Numerical experiments are given for these new algorithms.     

空间信息安全规范发展研究

论文针对CCSDS(空间数据系统咨询委员会)标准中信息安全规范进行了详细调研,对CCSDS空间信息系统安全规范的最新进展和主要问题进行了总结和提炼,并对我国如何引用CCSDS空间信息安全规范来提升我国空间信息系统的安全进行了分析。     

A discrete event system model of business system-a systemstheoretic foundation for information systems analysis. I

A variety of information systems methodologies for information systems analysis have been proposed. Though each methodology has its own effective concepts and tools, there still does not seem to exist a rigorous model of a business system. In this paper a general model of business systems is proposed. The model describes the whole mechanism of typical routine processing of business tasks with slips and business papers. Furthermore it can be used to examine the ability and limitation of popular tools. The model proposed is called a business transaction system. It consists of both static and dynamic structures. The former depicts the interconnection of the transactions and file system in a business system. The dynamic structure is constructed as a state space representation by introducing a state space, and then the resultant dynamic system is a discrete event system. The state space consists of the file system and schedule of transactions processing. The model provides answers to some questions about the nature of information systems methodologies     

计算机网络安全方案概探

随着网络技术的迅速发展和广泛的应用,小型的业务系统逐渐向大型业务系统发展,如金融业务系统、党政部门信息系统等。互联网的分散性、开放性、交互性创出了一个信息共享、交流、服务的理想空间,但同时也产生了信息污柒、信息不易受控制、信息泄露等安全问题。目前,我国网络安全就存在计算机系统易遭受病毒感染和破坏、黑客威胁、信息基础设施网络完全等网络安全问题。     

Necessary and sufficient conditions for strong comparability of multicomponent systems

In this article we analyze the stochastic comparison of continuous time Markov chains with state space E?=?{0,1,2,...} ^N used as models for N??component systems. Although the conditions for comparability of such processes are known in the theory, they involve a huge family of sets which makes their checking a difficult task. We show how, under some assumptions on the transitions allowed in the chains, the conditions can be greatly simplified, writing them in terms of conditions for each component. As an application we give the necessary and sufficient conditions for the stochastic comparability of two batch-arrival assemble-transfer queueing networks in terms of conditions for their single stations, improving previous results on the subject (Economou, J Appl Probab 40:1103–1120, 2003b). We also analyze a finite site version of interacting particle systems studied in Borrello (Electron J Probab 16:106–151, 2011).     

粗糙集近似与信息粒度

用粗糙集近似描述了三类常见信息系统(即Pawlak信息系统、不完备信息系统、不完备模糊信息系统)中对象的基本信息粒度.通过信息系统中对象属性值关于对象属性近似空问的上近似可以得到与对象具有相同或相似信息的对象集,即利用对象属性值关于对象属性近似空间的上近似将对象属性值信息变换成为对象的基本信息粒度. .所得结论对信息系统中基本信息粒度的物理意义有了比较清楚和更加合理的解释.     

面向信息栅格环境下的信息共享

首先指出了信息栅格下的信息共享的范围由局域网发展到广域网范围,集成方式由静态集成到动态集成,共享数据量呈几何增长,共享和分发模式由“点对点”发展到“多对多”,在共享层次上由技术共享发展到语义共享;第二,指出目前信息系统的共享模式依然是“点到点”的共享,信息共享仍然停留在“技术层面”的共享,基于内容的信息搜索与发现弱,自动的按需分发能力弱,并且指出了点到点信息共享机制对网格环境的不适应性。第三,提出了以共享空间为基础,以发布/订阅为信息交换手段的共享解决方案,并且进一步给出了系统的共享模式,提出了由数据资源、元数据管理、基于内容的搜索、信息访问和发布/订阅、用户访问控制等组成的分层的框架结构。     

Audio feedback system for teleoperation experiments on engineering test satellite VII system design and assessment using eye mark recorder for capturing task

When operating space robots, safety and reliability are the most important issues-even at the expense of dexterity and swiftness. This makes it very stressful for operators to teleoperate space robots, especially since they cannot be repaired during operation, unlike ground robots. Furthermore, operators have to quickly analyze a large amount of information about the target objects and immediately make decisions on how to proceed. The majority of this information is presented visually, including digital values, status displays, 3D computer simulation, and camera images. Therefore, we developed an audio feedback system that can convey some of this information in order to improve the operator's decision-making and avoid accidents. We used an eye-mark-recorder to assess the performance of this system. Audio systems for information presentation have previously only been proposed for ground-based operation systems. This is the first case in which sound has been utilized for space robot operation, even though sound does not actually exist in space.     

信息网格中基于虚拟组织的动态映射模型研究

实现信息集成、有效信息共享一直是科研和产业界面临的一个挑战,网格技术为解决这一问题提出了解决方案。提出了一种在信息网格环境下基于虚拟组织的信息资源模型,给出了在该模型中如何动态映射虚拟资源和物理资源的方法,并给出相应的算法和分析。     

基于PPI网络的地下停车场监控系统设计

本系统采用上位机和下位机的两级控制方式。上位机采用组态王监控系统,实现车库信息的采集、显示和车位的分配等功能;下位机采用多PLC的PPI网络系统,实现对车库信息的自动采集,根据声音信号对车库照明进行自动控制等功能,为现代智能车库的管理提供借鉴。     

Necessary conditions for exact controllability with a finite-dimensional input space

We derive necessary conditions for exact controllability of infinite-dimensional systems described by , where the generator A has a Riesz basis of eigenvectors and the input space is finite-dimensional. These conditions are in terms of the eigenvalues of A and the degree of unboundedness of B, but no further information about B is needed. Our results easily imply lack of exact controllability for a wide range of distributed parameter systems. It is known from partial differential equation (PDE) examples that the addition of damping into an exactly controllable second order system can destroy exact controllability. We discuss the effect of damping on such systems using our general conditions. We also give simple new proofs for results about the lack of exact controllability of hyperbolic systems in more than one space dimension.     

P3 systems: putting the place back into social networks

The availability of technologies enables a new class of location-aware information systems that link people-to-people-to-geographical-places (P3 systems). P3 systems can strengthen the relationship between social networks and physical places. They can also help individuals leverage location information to make new social ties and coordinate interactions that reinforce existing ties. Using the P3 systems framework, we describe the design space for location-aware community systems and important socio-technical challenges and opportunities.     

A multipoint method of minimization of a convex function

The problem of minimization of a convex nonsmooth function in a finite-dimensional space is considered. The method employs the Moreau-Yosida regularization. To accelerate the computation process, the proximate function is constructed using quasi-Newton matrices. Translated from Kibernetika i Sistemnyi Analiz, No. 6, pp. 151–153, November–December, 1999.