Classes and Objects Sample Clauses

Classes and Objects. ‌ Class processes encapsulate actions corresponding to the operations and threads of the corresponding VDM-RT class. Object processes will effectively create copies of their corresponding class process, but with an allocated object name. In our semantics we do not directly consider static instance variables and functions, which can be represented by similar constructs in CML. We assume that each class can be allocated a unique name represented by meta-tag ‹Classk›. Additionally, each object process of a particular class maintains its own central state. The various threads running within the class’s context copy and synchronise with this state using the channels getState-‹Classk› and syncState-‹Classk›. A semantic mapping for a typical class process is shown in Figure 8. The generated class process is parameteric over an object name objId that will be given when the class is instantiated. The state of the class, that is, the collection m of instance variables, is represented by the record type State-‹Classk› where ‹▇▇▇▇▇› is the instance variable name, and ‹ATm› its type. Thus the class process, VrtClass-‹Classk› has a state variable this of the state type, with initial values taken from the instance variable initial values ‹iai›. The state variable upd records the updates that have been made to the state as a total function on an existing state. It can then be applied to the central state when a thread needs to synchronise. · · · We assume there are n operations, named ‹Op1› ‹Opn›, with operation bodies ‹Op1Body› · · · ‹OpnBody›, respectively, which are encoded by respective actions that encode their thread behaviour. Additionally a class can optionally have a thread action, Thread, whose semantics will be described in the next section. The StateMgr action manages the central state for the class stored in state variable this. It can send the current central state to another action using the getState-‹Classk› channel, and can synchronise the state with an action using the syncState-‹Classk›. In the latter case the state manager updates the value of this by applying the update function to it. The main action of the process inter- leaves the operation and thread actions, and composes them with the state manager. The state manipulation channels are then hidden to ensure that state updates occur urgently: the clock cannot advance whilst a pending state update remains. We now describe the operation actions in more detail. Each operation action first waits for a ...
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Related to Classes and Objects

  • Aims and Objectives 8.1 The aims and objectives of the Agreement are to: • Improve the productivity, efficiency and effectiveness of the operational areas of the SAMFS. • Provide for continuous service improvement. • Ensure ongoing co-operation between the parties. • Provide for wage increases in accordance with Clause 14 of the Agreement. • Provide for the implementation of ongoing reform initiatives.

  • Goals and Objectives The purpose of this Agreement is to ensure that the proper elements and commitments are in place to provide consistent service support and delivery to the customers by the Service Providers. The goal of this Agreement is to obtain mutual agreement for the provision of information and communication between the Service Provider and customer. The objective of this Agreement is to: • Provide clear reference to service ownership, accountability, roles and responsibilities. • Present clear, concise and measurable description of service provision to the customer. • Match perceptions of the expected service provision with actual service support and delivery.

  • BACKGROUND AND OBJECTIVES The partnership proposed by the Cooperator was selected due to merit review evaluations from the 2017 Notice of Funding Opportunity P17AS00037. The Cooperator demonstrated expertise in disciplines and subject areas of relevance to cooperative research and training. The Cooperator met the program interests of NPS with expertise, facilities, experience, diversity of programs, and history of collaborative research projects. The Cooperator helps the NPS-CESU to meet its objectives to:  Provide research, technical assistance and education to NPS for land management, and research;  Develop a program of research, technical assistance and education that involves the biological, physical, social, and cultural sciences needed to address resources issues and interdisciplinary problem-solving at multiple scales and in an ecosystem context at the local, regional, and national level; and  Place special emphasis on the working collaboration among NPS, universities, and their related partner institutions. The CESU network seeks to provide scientifically-based information on the nature and status of selected biological, physical, and cultural resources occurring within the parks in a form that increases its utility for making management decisions, conducting scientific research, educating the public, developing effective monitoring programs, and developing management strategies for resource protection. Studying the resources present in NPS parks benefits the Cooperator’s goal of advancing knowledge through scientific discovery, integration, application, and teaching, which lead toward a holistic understanding of our environmental and natural resources. The Cooperator is a public research university, sharing research, educational, and technological strengths with other institutions. Through inter-institutional collaboration, combined with the unique contributions of each constituent institution, the Cooperator strives to contribute substantially to the cultural, economic, environmental, scientific, social and technological advancement of the nation. The NPS expects there to be substantial involvement between itself and the Cooperator in carrying out the activities contemplated in this Agreement. The primary purpose of this study is not the acquisition of property or services for the direct benefit or use by the Federal Government, but rather to accomplish a public purpose of support or stimulation authorized the Legislative Authorities in ARTICLE II. This agreement fulfills the Public Purpose of support and economic stimulation for the following reasons:  Projects will engage recipients, partners, communities, and/or visitors in shared environmental stewardship.  Projects will promote greater public and private participation in historic preservation programs and activities. The project builds resource stewardship ethics in its participants.  The information, products and/or services identified or developed by projects will be shared through a variety of strategies to increase public awareness, knowledge and support for historic preservation and stewardship of the nation’s cultural and historical heritage.  Projects will support the Government’s objective to provide opportunities for youth to learn about the environment by spending time working on projects in National Parks. The NPS receives the indirect benefit of completing conservation projects.  Projects will motivate youth participants to become involved in the natural, cultural and /or historical resource protection of their communities and beyond.  Students gain “real world” or hands-on experience outside of the classroom of natural, cultural and/or historical resource projects.  The scientific community and/or researchers external to NPS gains by new knowledge provided through research and related results dissemination of natural, cultural and/or historical resource information.  Projects assist in the creation, promotion, facilitation, and/or improvement of the public’s understanding of natural, cultural, historic, recreational and other aspects of areas such as ecological conservation areas, and state and local parks. For performance under this cooperative agreement, the regulations set forth in 2 CFR, Part 200, supersedes OMB Circulars A–21 (2 CFR 220), A–87 (2 CFR 225), A–110, and A–122 (2 CFR 230); Circulars A–89, A–102, and A–133; and the guidance in Circular A–50 on Single Audit Act follow–up apply. The Cooperator shall adhere to 2 CFR, Part 200 in its entirety in addition to any terms and conditions of the master agreement not superseded by 2 CFR 200, as well as the terms and conditions set forth in this agreement. In the event of a conflict between the original terms of the master agreement and 2 CFR, Part 200, relating to this task agreement, 2 CFR, Part 200 shall take precedence.

  • Scope and Objectives 1. This Chapter shall apply, in accordance with the Parties’ respective international obligations and domestic customs law, to customs procedures applied to goods traded between the Parties and to the movement of means of transport between the Parties. 2. The objectives of this Chapter are to: (a) simplify and harmonise customs procedures of the Parties; (b) ensure predictability, consistency and transparency in the application of customs laws and administrative procedures of the Parties; (c) ensure the efficient and expeditious clearance of goods and means of transport; (d) facilitate trade between the Parties; and (e) promote cooperation between the customs administrations, within the scope of this Chapter.

  • Purpose and Objectives The primary purpose of this procedure shall be to obtain, at the lowest administrative level and in the shortest period of time, equitable solutions to grievances which may arise from time to time. Grievance proceedings shall be handled confidentially.