General Electric

About: General Electric is a company organization based out in Boston, Massachusetts, United States. It is known for research contribution in the topics: Turbine & Signal. The organization has 76365 authors who have published 110557 publications receiving 1885108 citations. The organization is also known as: General Electric Company & GE.

Interactive method and system for faciliting the development of computer software applications

Abstract: A comprehensive method and system is provided for developing and implementing new computer software applications through a series of distinct stages. Following the completion of each stage, a tollgate meeting is held between the various parties involved and a decision as made on whether the project should be advanced to the next stage. Guidelines, templates and checklist items are provided for each stage in a user-friendly manner over an interactive computer interface, such as a web page. By providing on-line guidance to project developers, the system and method of the present invention substantially decreases the likelihood of errors being made which introduce costs in both time, resources, and risk. Further, the present system, through its comprehensive, global nature, substantially increases the ability for distributed locations to stay in tune with what each other are doing. Because all locations must develop applications in accordance with the above-described system, added consistency results.

Carbon dioxide capture systems and methods

Abstract: A carbon dioxide separation system comprises a heat exchanger having a first flow path for directing a fluid comprising carbon dioxide, for example an exhaust gas, therethrough and a second flow path for directing a heat transfer fluid therethrough, a separator comprising a material with selective permeability of carbon dioxide for separating the first and second flow paths and for promoting thermal transfer and carbon dioxide transport therebetween, and a condenser for condensing the heat transfer fluid to isolate the carbon dioxide. In another embodiment, a carbon dioxide separation system comprises an energy production system for generating electricity and an exhaust gas including carbon dioxide at a temperature greater than about 300C, a heat exchanger having a first flow path for directing the exhaust gas therethrough and a second flow path for directing water therethrough to promote thermal transfer between the first flow path and the second flow path and produce a flow of steam within the second flow path, a carbon dioxide extraction circuit in thermal and mass transfer relationship with the exhaust gas comprising a third flow path for directing a heat transfer fluid therethrough, wherein the carbon dioxide extraction circuit comprises a material with selective permeability of carbon dioxide for promoting thermal transfer and carbon dioxide transport between the exhaust gas and the heat transfer fluid to produce a mixed flow of a gaseous heat transfer fluid and carbon dioxide within the third flow path, and a condenser for receiving the mixed flow and for condensing the mixed flow to isolate the carbon dioxide.

Tie-Line Power and Frequency Control of Electric Power Systems - Part II [includes discussion]

Abstract: In a previous paper [ibid., vol. 72, pt. III, June 1953, pp. 562-71], the authors presented the results of a study of the performance of two interconnected steam-electric power-generating areas as affected by frequency and tie-line power controllers. The present paper extends this study to include hydroelectric power generating areas as well. As before, the object is to determine theoretically the best values of controller gains, that is, to find those controller settings that will result in best over-all system performance. The principal criterion of good performance is, also as before, the minimizing of any oscillations in tie-line power or system frequency resulting from load disturbances to either area. Thus, stability, rather than rapidity of response, is preferred, since the system actually is continually being disturbed by small and more or less random changes of load, rather than by the step load change used as a test disturbance in the study.

A Review and Evaluation of Software Science

Abstract: During recent years, there have been many attempts to define and measure the \"complexity\" of a computer program. Maurme Halstead has developed a theory that gives objective measures of software complexity. Various studms and experiments have shown that the theory's predictmns of the number of bugs in programs and of the time required to implement a program are amazingly accurate. It is a promising theory worthy of much more probing scientific investigation. This paper reviews the theory, called \"software science,\" and the evidence supporting it. A bmef description of a related theory, called \"software physics,\" is included. INTRODUCTION The increasing complexity of computer programs has increased the need for objective measurement of software quality and complexity. To meet this need, a theory known as Software Science has been developed and refined by Maurice Halstead [19]. This theory applies the scientific method to the properties and structure of computer programs. It provides precise, objective measures of the complexity of existing software, predicts the length of programs, and estimates the amount of time an average programmer can be expected to use to implement a given algorithm. Numerous statistical studies have shown very high correlations between the theory's predictions and actual program measures such as programming time and the mean number of bugs in programs. The theory does all this simply by counting operators and operands in programs. Because Halstead originally called his theory \"Software Physics\" to emphasize the similarity of approach to that of ther-modynamics, it is sometimes confused with Kolence's theory of computer system measurement. We will take a brief look at Kolence's software physics in order to show how it differs from Halstead's software science. The primary purpose of this paper is to review Halstead's theory of software science and to evaluate the major studies and experiments relating to that theory. Section 1 describes Kolence's software physics. Section 2 outlines the theory of software science as described by Halstead [19]. The measurable properties of pro-General permission to make fair use m teaching or research of all or part of this maternal is granted to individual readers and to non-profit libraries acting for them provided that ACM's copyright notice m gtven and that reference is made to the publication, to its date of issue, and to the fact that reprinting ~rivdeges were granted by perrmssion of the Association for Computing Machinery. To otherwise reprint a figure, table, other substantial excerpt, or …