Specifying systems

Formal methods mathematical languages, techniques and tools, used to specify and verify systems, goal is help engineers construct more reliable systems. Introduction to Formal Methodspresents about introduction; formal specification; formalformal verificationverification; model checking; theorem proving.

29p ngkhacvu 22-05-2015 75 7   Download

Bài giảng chương 13 đề cập đến vấn đề bảo mật trong cơ sở dữ liệu. Chương này trình bày những nội dung chinh như: Introduction to database security, access control, discretionary access control, specifying privileges using views, revoking privileges, propagation of privileges using the grant option,... Mời các bạn cùng tham khảo.

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Lecture "Software engineering - Lecture 10: Specifying systems" has contents: Use of UML for ODP system specifications, use of UML for ODP system specifications, UML object constraint language.

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Objectives: The main objective of this thesis is to study the problem of stability analysis and applications in control of discrete-time 2-D systems described by Roesser model with certain types of stochastic parameters. The research includes the methodology development and establishment of analysis and synthesis conditions of the following specified models.

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Objectives: The main objectives of this thesis is to study the problem of stability analysis and applications in control of discrete-time 2-D systems described by Roesser model with certain types of stochastic parameters. The research includes the methodology development and establishment of analysis and synthesis conditions of the following specified models.

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The paper presents a brief description of an automated system, designed to control coal quality in accordance with the specified parameters of the waste rock content owing to obtaining, collecting, processing and storing information from primary instruments, using a radioisotope measuring method.

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Identify the product whose software requirements are specified in this document, including the revision or release number. Describe the scope of the product that is covered by this SRS, particularly if this SRS describes only part of the system or a single subsystem.

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Formal specification of agent behaviour through environment scenarios introduces a formal notation for the specification of scenario s in agent based systems. The autonomous and collaborative behavior of an agent can be formally specified by a set of rules describing its activity in various scenarios. The power of the approach is illustrated by the formal specification of maes.

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Users and Security Security domain The database administrator defines the names of the users who are allowed to access a database. A security domain defines the settings that apply to the user. Authentication mechanism A user who requires access to the database can be authenticated by one of the following: Data dictionary Operating system Network The means of authentication is specified at the time the user is defined in the database and can be altered later. This lesson covers authentication by database and by operating system only.

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cacls /T /E /G administrator:F d:\users\*.* Cacls will add Full Control for the adminsitrator account all files and subfolders in the Users folder of the D:\ drive. cacls /T /E /R Everyone d:\users Cacls will remove all permissions for the 'Everyone' group in all files and subfolders in the Users folder of the D:\ drive. Be sure to use the /E switch when you are just making modifications to a specific account or group. Without the /E switch, your settings will replace the current security with only what is specified. ...

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Used to communicate IP status and error messages between hosts and routers Uses IP to route its messages between hosts Must be implemented with IP remember, IP is just a packet delivery system transmits and routes datagrams from sources to destinations through a series of interconnected networks it has a checksum in the IP header to detect lost bits no error detection on the datagram payload though but has no native mechanism for source host notification This is where ICMP comes in its used to report IP errors to the source host ICMP data is carried as the payload of an IP datagram specifie...

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Upon completing this module, you will be able to: Explain how bridging and switching operates Explain the purpose and operations of the Spanning-Tree Protocol Verify the default configuration of the device, given a functioning access layer switch Build a functional access switch configuration to support the specified network operational parameters, given a network design Execute an add, move, or change on an access layer switch, given a new network requirement

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Upon completing this course, you will be able to: Execute an add, move, or change so that the network functions in accordance with the new requirement, given a new network requirement Use available configuration tools to establish connectivity to the appropriate network device to complete the initial device configuration Build a functional configuration to support the specified network operational requirements, given a network design Use the command-line interface to accurately determine network device operational status and network performance...

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SPIN là một công cụ để xác minh tính chính xác của của một mô hình phần mềm một cách nghiêm ngặt và tự động. Ngôn ngữ đầu vào của SPIN có tên là PROMELA. PROMELA có thể dùng để quy định hệ thống đồng thời bằng cách tự động thay đổi số lượng các quá trình tương tác, nơi mà các quá trình tương tác có thể được đồng bộ hóa hoặc không đồng bộ hóa.

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The for loop is a MATLAB construct that allows a sequence of MATLAB statements to be executed more than once. The for loop repeats a block of commands for a specified number of times; the specified number is established before the loop is executed.

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A BGP routing policy has been created using route maps. The command route-map TEST permit 10 is part of the configuration. What does the argument 10 indicate? It identifies the access list number to be used by the route map statement. It identifies the position of the route map in relation to other instances. It indicates the local preference to be set for routes that match the route map. It indicates the metric to be set for routes that match the route map. It specifies the route map to be used on autonomous system 10....

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CONTINUOUS IMAGE MATHEMATICAL CHARACTERIZATION In the design and analysis of image processing systems, it is convenient and often necessary mathematically to characterize the image to be processed. There are two basic mathematical characterizations of interest: deterministic and statistical. In deterministic image representation, a mathematical image function is defined and point properties of the image are considered. For a statistical image representation, the image is specified by average properties.

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Connecting to a Secured Access Database Problem You want to connect to a Microsoft Access database that has been secured with user-level security and a workgroup file. Solution Use the Jet OLEDB:System Database attribute in the connection string to specify the path and filename of the workgroup information file or system database.

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The contents of the HKEY_LOCAL_MACHINE\SYSTEM\Select registry key The CurrentControlSet key is actually a symbolic link to the control set specified by the Current setting under HKEY_LOCAL_MACHINE\SYSTEM\Select

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In general terms, the functional specification states what the proposed system is to do, whereas design is how the system is to be constructed to meet the functional specification. However in writing it, some consideration of design issues must take place, to ensure a realistic system is specified.

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