定价： 53元 / 折扣价： 46 元

This guide presents various approaches of good practice that will improve the ability to assemble and erect self-supporting and guyed concrete pole structures. This guide covers construction aspects after foundation installation and up to the conductor stringing operation. Concrete pole structures may have components made of other materials (i.e., steel, wood, aluminum). Though some aspects of construction related to these materials are covered in this document, it should not be considered… read more complete. Other documents cover these materials in more detail (see IEEE Std 951-19881). read less

定价： 158元 / 折扣价： 135 元

Magnetic fields of analog and digital telephone receivers, as well as non-traditional telephone receivers, such as wireless devices, may be objectively measured using this standard. Receivers not connected to a telephone may be evaluated as well. Measurement of static fields, such as those created by permanent magnets, is not covered. The methodology described in this standard is suitable for measurements in the range of 100 Hz to 10 000 Hz.

定价： 135元 / 折扣价： 115 元

This standard provides minimum acceptable requirements for systematic software reviews, where "systematic" includes the following attributes: -- Team participation -- Documented results of the review -- Documented procedures for conducting the review Reviews that do not meet the requirements of this standard are considered to be non-systematic reviews. The standard is not intended to discourage or prohibit the use of non-systematic reviews. The definitions, requirements, and procedures for the… read more following five types of reviews are included within this standard: a) Management reviews b) Technical reviews c) Inspections d) Walk-throughs e) Audits This standard does not establish the need to conduct specific reviews; that need is defined by other software engineering standards or by local procedures. This standard provides definitions, requirements, and procedures that are applicable to the reviews of software development products throughout the software life cycle. Users of this standard shall specify where and when this standard applies and any intended deviations from this standard. This standard may be used with other software engineering standards that determine the products to be reviewed, the timing of reviews, and the necessity of reviews. This standard is closely aligned with IEEE Std 1012-2004 [B6], but it can also be used with IEEE Std 1074-2006 [B11], IEEE Std 730-2002 [B2], IEEE Std 12207-2008 [B15], and other standards. A useful model is to consider IEEE Std 1028-2008 as a subroutine to the other standards. Thus, if IEEE Std 1012-2004 [B6] were used to carry out the verification and validation process, the procedure in IEEE Std 1012-2004 [B6] could be followed until such time as instructions to carry out a specific review are encountered. At that point, IEEE Std 1028-2008 would be "called" to carry out the review, using the specific review type described herein. Once the review has been completed, IEEE Std 1012-2004 [B6] would be "returned to" for disposition of the results of the review and any additional action required by IEEE Std 1012-2004 [B6]. This standard may also be used as a stand-alone definition of software review and audit procedures. In this case, local management must determine the events that precede and follow the actual software reviews and audits. In this model, requirements and quality attributes for the software product are "parameter inputs" to the review and are imposed by the "caller." When the review is finished, the review outputs are "returned" to the "caller" for action. Review outputs typically include anomaly lists and action item lists; the resolution of the anomalies and action items are the responsibility of the "caller." read less

定价： 172元 / 折扣价： 147 元

This guide assists users in specifying the functional requirements for transmission static Var compensators (SVCs) using conventional thyristor technology. Many sections will be useful for compensator systems using gate turn-off thyristor technology [static synchronous compensator (STATCOM)] or other semiconductor devices, or SVCs associated with high-voltage direct current (HVDC) converter stations, or industrial and distribution applications. Although this guide may not directly serve for… read more SVCs primarily associated with industrial drives nor with the correction of load disturbances or phase unbalance, many sections will be useful also for these applications. General terms and conditions forming the commercial part of a specification for a particular project are outside the scope of this document. read less

定价： 174元 / 折扣价： 148 元

This standard provides terms and definitions for surface acoustic wave devices. These terms and definitions are given in the following categories: wave-related terms, transducer-related terms, and device-related terms, respectively.

定价： 129元 / 折扣价： 110 元

This guide describes the application of configuration management (CM) disciplines to the management of software engineering projects. Software configuration management (SCM) consists of two major aspects planning and implementation. For those planning SCM activities, this guide provides insight into the various factors that must be considered. Users implementing SCM disciplines will find suggestions and detailed examples of plans in this guide. This guide also presents an interpretation of how… read more ANSI/IEEE Std 828-1983 [2] can be used for planning the management of different kinds of computer program development and maintenance activities. The guide is presented in two parts. The first part, the main body of the guide, presents issues to consider when planning software configuration management for a project or organization. The second part of the guide presents, for those preparing SCM Plans, a series of sample Plans illustrating different concepts discussed in the body of the guide. The text of the guide introduces the essential concepts of SCM, particularly those of special significance (for example, libraries and tools) to software engineering. It then presents the planning for SCM in terms of documenting a Plan following the outline of ANSI/IEEE Std 828-1983 [2] so that a user who is unfamiliar with the disciplines of software configuration management can gain some insight into the issues. For those preparing SCM Plans, the second part of the guide provides sample plans for consideration. The sample SCM Plans include a variety of software configuration management applications for different types of projects and organizations. illustrates a software configuration management plan (SCMP) for a project developing a complex, critical computer system. It describes a Plan for managing a typical software development cycle where the development is contracted to an organization that does not have responsibility for its maintenance or use. illustrates a SCMP for a small software development project. It describes a Plan for supporting a prototype development activity where the goal of the project is to demonstrate the feasibility of a concept. illustrates a SCMP used by an organization where the emphasis is on maintaining programs developed by other activities or organizations. illustrates a SCMP for an organization developing and maintaining computer programs embedded in a hardware product line. It describes a Plan for managing both software development and maintenance of a commercial product line. Some of the different characteristics illustrated are shown in Table 1 . read less

定价： 198元 / 折扣价： 169 元

Digital control technology, microelectronics, and digital data communication are rapidly evolving fields. Controversial issues such as geographical and functional distribution, network topologies, hierarchical architectures, medium access control, and the physical connection are not resolved. A single design standard to cover the scope outlined above is impractical. This guide, therefore, addresses alternate approaches to the task of applying a digital control system, comparing relative… read more advantages and disadvantages of these approaches, and addresses criteria to be used to judge the suitability of commercially available systems for use in the power generation industry. read less

定价： 172元 / 折扣价： 147 元

This guide assists users in specifying the functional requirements for transmission static synchronous compensator (STATCOM) systems using forced commutated technology based on voltage sourced converter topologies. This guide covers specifications, applications, engineering studies, main component characteristics, system functions and features, factory testing, commissioning, and operations of the STATCOM systems. A number of sections in the guide can be used for active filters and for… read more industrial or distribution system applications. However, reactive power compensation, mitigation of load disturbances, or phase unbalance compensation for industrial and distribution system applications are not included in this guide. Commercial terms and conditions for the purchase of the STATCOM systems are also beyond the scope of this document. General terms and conditions forming the commercial part of a specification for a particular project are outside the scope of this document. read less

定价： 160元 / 折扣价： 136 元

定价： 55元 / 折扣价： 47 元

This recommended practice describes a set of useful quality considerations that can be selected and applied during one or more steps in a software acquisition process. The recommended practices can be applied to software that runs on any computer system regardless of the size, complexity, or criticality of the software. The software supply chain may include integration of commercial-off-the-shelf (COTS), custom, or free and open source software (FOSS). Each organization or individual using this… read more recommended practice will need to identify the specific quality and activities that need to be included within the organization's acquisition process. Security will be included as a quality attribute considered during the acquisition. read less

定价： 82元 / 折扣价： 70 元

Precipitators and baghouses are two systems designed to remove fly ash from boiler flue gas. Air pollution control regulations require that these precipitators and baghouses operate efficiently and reliably. Malfunctions or equipment failures could lead to boiler de-rating or complete shutdown, which increase the operation and maintenance expenses for the operating company. Problems related to fly ash collection in the hoppers, such as fly ash agglomeration and fly ash solidification, can lead… read more to precipitator and baghouse shutdowns. The proper design and installation of hopper heating systems can significantly reduce the maintenance problems associated with fly ash plugging in hoppers. read less

定价： 172元 / 折扣价： 147 元

This Standard is intended as a guide for the industry in the determination and presentation of test data and ratings of magnetic amplifiers. While these Standards are intended mainly for self-saturating linear and/or bistable magnetic amplifiers, appropriate items may be applied to simple saturable reactor circuits. It is not the intent of this Standard to require a certain fixed number of ratings or tests for the complete specification of a particular amplifier; rather it is the intent to… read more standardize the most common ratings and tests so that when they are applied by the equipment manufacturer or by the user, the significance of the rating or test will always be the same. read less

定价： 55元 / 折扣价： 47 元

Provide the industry with a generic specification, including design and testing, for transmission modular restoration structure components being widely used today by many electric utilities.

定价： 113元 / 折扣价： 97 元

This guide will provide the industry with a generic specification, including design and testing, for transmission modular restoration structure components.

定价： 110元 / 折扣价： 94 元