921 resultados para Voice of Process


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ed. by Cyrus Adler

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3. "Plan d'ensemble d'une enquête sur les attitudes generales de la population allemande a l'egard de la France et leurs consequences en ce qui concerne l'orientation des emissions en langue allemande de la radiodiffusion francaise", 18.05.1953. Typoskript, 7 Blatt; 4. "Note" Über Methode, Forschungsrichtung und Reichweite der Ergebnisse der Untersuchung; 18.05.1953; Typoskript, 7 Blatt; 5. "Note" Über Geschichte und Tätigkeit des Instituts für Sozialforschung; 18.05.1953; Typoskript, 5 Blatt; 6. Memorandum des Instituts zu Verfahren und ergebnissen der Untersuchung; 1954 [?]; Typoskript, 2 Blatt; 7.-17. Décamps, Jacques: Memoranden; 7. Memorandum, 12.09.1953; Typoskript, 1 Blatt; 8. "Memorandum re: Besprechung in Bad Godesberg in Bezug auf die französische Studie, am 04.September 1953", 10.09.1953. Typoskript, 1 Blatt; 9. "Memorandum re: Vorhaben des 'Centre d'Etudes Sociologiques, Paris', eine deutsch-französische Arbeitsgemeinschft für die Durchführung von Gemeindestudien zu gründen", 15.06.1953. Typoskript, 1 Blatt; 10. "Memorandum über den Besuch von M. Jean L. Pelosse, Centre d'Etudes sociologiques Paris", 12.06.1953. Typoskript, 3 Blatt; 11. "Bericht über die 'Journées d'Etudes eurropéennes sur la Population' Paris, 21., 22. und 23. Mai 1953", 01.06.1953; 12. "Bericht über den Stand der Verhandlungen mit dem Französischen Auswärtigen Amt und dem französischem Rundfunk. Besprechungen in Paris am 27. und 28. Mai 1953", 01.06.1953. Typoskript, 2 Blatt; 13. Angaben für Max Horkheimer zur Übergabe von Memoranden, Projektbeschreibungen und Briefentwürfen, Mai 1953; Typoskript, 1 Blatt; 14. "Bericht über das 'Institut National d'Etudes Démographiques'", 07.05.1953. Typoskript, 4 Blatt; 15. "Memorandum re: Methode der Gruppendiskussion", 04.05.1953. Typoskript, 1 Blatt; 16. "Besprechung im 'Institut francaise d'Opinion Publique, Paris' und bei der hohen Behörde Luxemburg" 30.04.1953; 17. "Besprechung im Auswärtigen Amt und bei dem französischen Rundfunk", 29.04.1953. Typoskript, 6 Blatt; 18. Horkheimer, Max: 1 Brief an den französischen Botschafter in der Bundesrepublik Deutschland, ohen Ort, ohne Datum; Typoskript, 1 Blatt; 19. Radiodiffusion-Télévision Francaise, le Directeur: 1 Briefabschrift an Jacques Décamps, Paris, 09.03.1954; 1 Blatt; 20. Plessner, Helmuth: 1 Brief an den französischen Außenminister, ohne Ort, 18.05.1953; 1 Blatt; 21. Plessner, Helmuth: 1 Brief an Radiodiffusion Francaise, ohne Ort, 18.05.1953; 1 Blatt; 22. Plessner, Helmuth: 1 Brief an den Ministerialrat der Sektion "Agences et Radio" im französischem Außenministerium, ohne Ort, 18.05.1953; 1 Blatt; "The Effectiveness of Candid versus Evasive German-Language Broadcasts of the Voice of America. Final Report", 1953. Typoskript, gebunden, 432 Blatt;

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This paper introduces a new mathematical model for the simultaneous synthesis of heat exchanger networks (HENs), wherein the handling pressure of process streams is used to enhance the heat integration. The proposed approach combines generalized disjunctive programming (GDP) and mixed-integer nonlinear programming (MINLP) formulation, in order to minimize the total annualized cost composed by operational and capital expenses. A multi-stage superstructure is developed for the HEN synthesis, assuming constant heat capacity flow rates and isothermal mixing, and allowing for streams splits. In this model, the pressure and temperature of streams must be treated as optimization variables, increasing further the complexity and difficulty to solve the problem. In addition, the model allows for coupling of compressors and turbines to save energy. A case study is performed to verify the accuracy of the proposed model. In this example, the optimal integration between the heat and work decreases the need for thermal utilities in the HEN design. As a result, the total annualized cost is also reduced due to the decrease in the operational expenses related to the heating and cooling of the streams.

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This paper presents a new mathematical programming model for the retrofit of heat exchanger networks (HENs), wherein the pressure recovery of process streams is conducted to enhance heat integration. Particularly applied to cryogenic processes, HENs retrofit with combined heat and work integration is mainly aimed at reducing the use of expensive cold services. The proposed multi-stage superstructure allows the increment of the existing heat transfer area, as well as the use of new equipment for both heat exchange and pressure manipulation. The pressure recovery of streams is carried out simultaneously with the HEN design, such that the process conditions (streams pressure and temperature) are variables of optimization. The mathematical model is formulated using generalized disjunctive programming (GDP) and is optimized via mixed-integer nonlinear programming (MINLP), through the minimization of the retrofit total annualized cost, considering the turbine and compressor coupling with a helper motor. Three case studies are performed to assess the accuracy of the developed approach, including a real industrial example related to liquefied natural gas (LNG) production. The results show that the pressure recovery of streams is efficient for energy savings and, consequently, for decreasing the HEN retrofit total cost especially in sub-ambient processes.

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"Supported in part by Contract no. U.S. AEC (11-1)l469."

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Advertisements on p. [1]-[6] at end.

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The paper describes a procedure for accurately and speedily calibrating tanks used for the chemical processing of nuclear materials. The procedure features the use of (1) precalibrated vessels certified to deliver known volumes of liquid, (2) calibrated linear measuring devices, and (3) a digital computer for manipulating data and producing printed calibration information. Calibration records of the standards are traceable to primary standards. Logic is incorporated in the computer program to accomplish curve fitting and perform the tests to accept or to reject the calibration, based on statistical, empirical, and report requirements. This logic is believed to be unique.

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Mode of access: Internet.