Formal Specification Sample Clauses

Formal Specification. Modelling in Event-B typically stars from an initially very abstract representation and is conducted in a series of refinement steps, each adding more detail to the model, until the final model is reached containing all details required for coding or, ideally, automatic code generation. In contrast to this “top-down” modelling methodology, which results in a hierarchy of increasingly more complex models, the XCore ISA is “flat”, i.
Sample 1
Formal Specification. The purpose of the formal specification phase is to model the cruise control system in Event-B [Abr09b]. Our input for a formal specification of the cruise control system in Event-B is the semi-formal specification which has been de- rived from the informal specification by the process described in Section 4.3. During pilot deployment we developed several guidelines for constructing for- mal specifications in Event-B from semi-formal specifications in our extended Problem Frames approach which will be described in the following. The first step in constructing a formal specification of a control system in Event-B is to think of the refinement strategy, i.e., a strategy about structur- ing the refinement levels of a formal specification in Event-B. Since Event-B supports so called contexts which describe the static aspects of the system to be modelled and so called machines which describe the dynamic aspects of the system to be modelled one has to think about a refinement strategy for contexts as well as one for machines. During our first experiments of formally modelling the cruise control system in Event-B we found out that our semi-formal requirements specification with different abstraction levels can be mapped to a formal specification in Event-B in the following way: Each problem diagram is modelled as a separate machine with its as- sociated context. Elaborations of an abstract diagram into a more concrete one are real- ized in Event-B by refinement of the machine and its associated con- text. Projections of a problem diagram into two or more subproblems are re- alized in Event-B by shared-variable decomposition [Abr09a] with some changes. Each phenomenon defined in a problem diagram is modelled either as a constant or a variable in Event-B. Abstract phenomena which will be elaborated later are realized in Event-B using records. Elaborations of phenomena in problem diagrams are realized in Event- B using data refinement. events and/or invariants. Table 4.2 shows this mapping of Problem Frame elements to Event-B elements in a compact form. We applied this refinement strategy on the cruise control system. Figure
Sample 1

Related to Formal Specification

  • Technical Specifications The Technical Specifications furnished on the CD are intended to establish the standards for quality, performance and technical requirements for all labor, workmanship, material, methods and equipment necessary to complete the Work. When specifications and drawings are provided or referenced by the County, these are to be considered part of the Scope of Work, and to be specifically documented in the Detailed Scope of Work. For convenience, the County supplied specifications, if any, and the Technical Specifications furnished on the CD.

  • Escrow Format Specification Deposit’s Format. Registry objects, such as domains, contacts, name servers, registrars, etc. will be compiled into a file constructed as described in draft-xxxxx-xxxxxxx-registry-data-escrow, see Part A, Section 9, reference 1 of this Specification and draft-xxxxx-xxxxxxx-dnrd-objects-mapping, see Part A, Section 9, reference 2 of this Specification (collectively, the “DNDE Specification”). The DNDE Specification describes some elements as optional; Registry Operator will include those elements in the Deposits if they are available. If not already an RFC, Registry Operator will use the most recent draft version of the DNDE Specification available at the Effective Date. Registry Operator may at its election use newer versions of the DNDE Specification after the Effective Date. Once the DNDE Specification is published as an RFC, Registry Operator will implement that version of the DNDE Specification, no later than one hundred eighty (180) calendar days after. UTF-8 character encoding will be used.

  • DAF Specifications Developer shall submit initial specifications for the DAF, including System Protection Facilities, to Connecting Transmission Owner and NYISO at least one hundred eighty (180) Calendar Days prior to the Initial Synchronization Date; and final specifications for review and comment at least ninety (90) Calendar Days prior to the Initial Synchronization Date. Connecting Transmission Owner and NYISO shall review such specifications to ensure that the DAF are compatible with the technical specifications, operational control, and safety requirements of the Connecting Transmission Owner and NYISO and comment on such specifications within thirty (30) Calendar Days of Developer’s submission. All specifications provided hereunder shall be deemed to be Confidential Information.

  • General specifications For the purpose of this Regulation, the vehicle shall fulfil the following requirements:

  • Service Specification The Parties have agreed upon the scope and specification of the Services provided under this Service Agreement in the Service Specification.

  • The Specifications The Specifications are that portion of the Contract Documents consisting of the written requirements for materials, equipment, systems, standards and workmanship for the Work, and performance of related services.

  • Equipment Specifications All equipment must meet the contract specifications and all federal and State safety codes and regulations in effect at the date of manufacture. All equipment must be Original Equipment Manufacturer (OEM) equipment unless otherwise stated in the contract. All products, materials, supplies, replacement parts, and equipment offered and furnished must be new, of current manufacturer production, and must have been formally announced by the manufacturer as being commercially available, unless otherwise stated in this Contract.

  • ODUF Packing Specifications 6.3.1 A pack will contain a minimum of one message record or a maximum of 99,999 message records plus a pack header record and a pack trailer record. One transmission can contain a maximum of 99 packs and a minimum of one pack.

  • Product Specifications (a) Supplier shall manufacture all Products according to the Specifications in effect as of the date of this Agreement, with such changes or additions to the Specifications of the Products related thereto as shall be requested by Buyer in accordance with this Section or as otherwise agreed in writing by the Parties. All other Products shall be manufactured with such Specifications as the Parties shall agree in writing. (b) Buyer may request changed or additional Specifications for any Product by delivering written notice thereof to Supplier not less than one hundred twenty (120) days in advance of the first Firm Order for such Product to be supplied with such changed or additional Specifications. Notwithstanding the foregoing, if additional advance time would reasonably be required in order to implement the manufacturing processes for production of a Product with any changed or additional Specifications, and to commence manufacture and delivery thereof, Supplier shall so notify Buyer, and Supplier shall not be required to commence delivery of such Product until the passage of such additional time. (c) Supplier shall be required to accommodate any change of, or additions to, the Specifications for any Product, if and only if (i) in Supplier’s good faith judgment, such changed or additional Specifications would not require Supplier to violate good manufacturing practice, (ii) the representation and warranty of Buyer deemed made pursuant to Subsection (e) below is true and correct, and (iii) Buyer agrees to reimburse Supplier for the incremental costs and expenses incurred by Supplier in accommodating the changed or additional Specifications, including the costs of acquiring any new machinery and tooling. For the avoidance of doubt, such costs and expenses shall be payable by Buyer separately from the cost of Products at such time or times as Supplier shall request. (d) Supplier shall notify Buyer in writing within thirty (30) days of its receipt of any request for changed or additional Specifications (i) whether Supplier will honor such changed or additional Specifications, (ii) if Supplier declines to honor such changed or additional Specifications, the basis therefor and (iii) if applicable, the estimated costs and expenses that Buyer will be required to reimburse Supplier in respect of the requested changes or additions, as provided in Subsection (c) above. Buyer shall notify Supplier in writing within fifteen (15) days after receiving notice of any required reimbursement whether Buyer agrees to assume such reimbursement obligation. (e) By its request for any changed or additional Specifications for any Product, Buyer shall be deemed to represent and warrant to Supplier that the manufacture and sale of the Product incorporating Buyer’s changed or additional Specifications, as a result of such incorporation, will not and could not reasonably be expected to (i) violate or conflict with any contract, agreement, arrangement or understanding to which Buyer and/or any of its Affiliates is a party, including this Agreement and any other contract, agreement, arrangement or understanding with Supplier and/or its Affiliates, (ii) infringe on any trademark, service xxxx, copyright, patent, trade secret or other intellectual property rights of any Person, or (iii) violate any Applicable Law. Buyer shall indemnify and hold Supplier and its Affiliates harmless (including with respect to reasonable attorneys’ fees and disbursements) from any breach of this representation and warranty.

  • Packing Specifications 7.3.1 A pack will contain a minimum of one message record or a maximum of 99,999 message records plus a pack header record and a pack trailer record. One transmission can contain a maximum of 99 packs and a minimum of one pack.