Selection of the optimal flow path and control program for the turbo drive of remotely operated underwater vehicle

Обеспечение высокой экономичности не только на режимах номинальной мощности, но и на частичных режимах при изменении внешних параметров приводит к необходимости оптимизации проточной части турбины с объективным учетом ее характеристик на переменных режимах. Приводятся результаты многорежимной оптимизации МРТ в составе ЭУ АНПА на базе подхода разработанного авторами. Представлены основные результаты сравнительного анализа многорежимной оптимизации МРТ с оптимизацией на i-тый режим и работающей на остальных режимах как переменных для различных программ регулирования мощности. Выявлено сильное влияние на результаты многорежимной оптимизации основного ограничения в виде равенства мощности турбины мощности задаваемой графиком нагрузки, а также программ регулирования. Возможность применения соплового регулирования приводит к ослаблению степени воздействия основного ограничения. Установлено, что оптимальные геометрические характеристики стремятся к режиму с большей работой. Представлены результаты многорежимной оптимизации МРТ для различных программ регулирования и графиков нагрузок по отношению к результатам многорежимной оптимизации с программой реализующей сопловое регулирование в сочетании с изменением начальных параметров перед турбиной. Многорежимная оптимизация для программы, реализующей сопловое регулирование в сочетании с изменением только начальной температуры перед турбиной, выявила узкую регулировочную способность начальной температуры, и невозможность в некоторых случаях удовлетворения основным ограничениям по равенству мощностей для всех исследуемых графиков нагрузки в пределах заданных ограничений на режимные параметры. Результаты численного эксперимента свидетельствуют, что разработанный автором подход к многорежимной оптимизации МРТ позволяет снизить расход топлива при условии обеспечения заданного графика нагрузок по сравнению с традиционными методами проектирования на номинальный режим. Ensuring high efficiency not only at nominal power modes, but also at partial modes when changing external parameters leads to the need to optimize the flow path of the turbine with objective consideration of its characteristics at variable modes. The results of multi-mode optimization of a low-consumption turbine as part of a power unit of remotely operated underwater vehicle based on the approach developed by the authors are presented. The main results of a comparative analysis of multi-mode optimization of a low-consumption turbine with optimization for the i-mode and operating in other modes as variables for various power control programs are presented. A strong influence on the results of multi-mode optimization of the main limitation in the form of equality of the turbine power to the power set by the load schedule, as well as control programs is revealed. The possibility of using nozzle regulation leads to a weakening of the degree of influence of the main restriction. It was found that the optimal geometric characteristics tend to the regime with more work. The results of multi-mode optimization of a low-consumption turbine for various control programs and load schedules are presented in relation to the results of multi-mode optimization with a program that implements nozzle control in combination with a change in the initial parameters in front of the turbine. Multimode optimization for a program that implements nozzle regulation in combination with changing only the initial temperature in front of the turbine revealed a narrow adjusting ability of the initial temperature and the impossibility, in some cases, of satisfying the basic constraints on the equality of powers for all the studied load curves within the specified constraints on operating parameters. The results of the numerical experiment indicate that the approach developed by the author to the multi-mode optimization of a low-consumption turbine makes it possible to reduce fuel consumption, provided that a given load schedule is provided in comparison with traditional design methods for the nominal mode.

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The “Hospital Epidemiologist” in U.S. Hospitals, 1976-1977: A Description of the Head of the Infection Surveillance and Control Program Report from the SENIC Project

Infection Control ◽

10.1017/s019594170005236x ◽

1980 ◽

Vol 1 (1) ◽

pp. 21-32 ◽

Cited By ~ 14

Author(s):

Robert W. Haley

Keyword(s):

Infection Control ◽

Nosocomial Infections ◽

Professional Training ◽

Control Program ◽

Clinical Problem ◽

Control Programs ◽

Project Study ◽

Infection Surveillance ◽

Urban Rural ◽

And Control

AbstractAs part of the first two phases of the SENIC Project (Study on the Efficacy of Nosocomial Infection Control), information was collected from the heads of the infection surveillance and control programs (ISCPs) in U.S. hospitals. The data were analyzed to describe these respondents and to determine whether differences among them were related to their areas of professional training or to characteristics of the hospitals where they were located. The findings indicate that the ISCP heads constitute a very heterogeneous group, with substantial differences in age, professional training (40% are pathologists), characteristics of their medical practices, memberships in professional organizations related to infection control, time spent in ISCP activities, approach to epidemiologic problems, and opinions on the preventability of nosocomial infections and the seriousness of infection problems in their hospitals. These differences are related strongly to the ISCP heads' professional training, size of hospital, and, to a lesser extent, medical school affiliation, but there is little evidence that the differences are related to regional or urban-rural location or type of ownership of the hospitals. The average ISCP head estimates that about half of all nosocomial infections are preventable, but these estimates vary inversely with tenure in the position and the tendency to approach a clinical problem epidemiologically.

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THE INJURY CONTROL PROGRAM OF THE U.S. PUBLIC HEALTH SERVICE

PEDIATRICS ◽

10.1542/peds.44.5.888 ◽

1969 ◽

Vol 44 (5) ◽

pp. 888-890

Author(s):

Richard E. Marland ◽

Frederic David Burg

Keyword(s):

Health Problem ◽

Control Program ◽

Control Measures ◽

Morbidity Rate ◽

Control Programs ◽

Stage Of Development ◽

Preventive Health Programs ◽

Benefit Cost ◽

Injury Control ◽

And Control

Today the center for action and support of accident prevention activities within the Federal Government is the Injury Control Program. Therefore, it is appropriate to discuss the Government's role in solving this health problem. The present stage of development in injury control allows us to define, comprehend, and control some injury types as if they were disease entities. If the appropriate funds were made available, the estimated 16 billion dollars per year lost to the economy from accidents, the 50 million injuries caused by accidents, the 100,000 plus deaths resulting from accidents, and the 20 million plus hospital bed days used up by accident victims could all be reduced by about 30%. Figure 1 shows the benefit-cost potential to be found in the control of accidental injuries and is derived from study of cost-effectiveness of previous injury control programs. The present situation (point A) has been relatively static over the past few years-that is, a reasonably low return is being made from our investment. With a 20 to 30% increase in resources, the curve reaches a steeper slope where you will get the greatest benefits per dollars spent. Fundamentally, injury control needs a high Federal priority to receive adequate resources to make progress in overcoming this health problem. The basic criteria used to ascertain a prioritY rating in preventive health programs are: (1) mortality rate (including age-specific rates), (2) morbidity rate (including age-specific rates), (3) financial impact on national economy, (4) utilization of space in our nation's hospitals by those involved in caring for those incapacitated or requiring care, (6) the control measures available for attacking the problem-or the case with which they can be attained, (7) available resources, both personnel and monetary, to attack and solve the problem, and (8) public reception to the idea of controlling the problem.

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Effects of an Extracurricular Anger Self-Control Program for Nursing Students

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18063059 ◽

2021 ◽

Vol 18 (6) ◽

pp. 3059

Author(s):

Won Hee Jun ◽

Eun Joung Choi ◽

Hyun-Mee Cho

Keyword(s):

Nursing Students ◽

Intervention Group ◽

Anger Expression ◽

Control Program ◽

Self Control ◽

Trait Anger ◽

Control Group ◽

Control Programs ◽

Quasi Experimental ◽

And Control

Nursing students often experience anger in response to stress and suppress their anger instead of actively controlling it. Therefore, the anger self-control programs that can manage nursing students’ anger level and dysfunctional anger expression are needed. The aim of this study is to investigate the effects of an anger self-control program on trait anger, anger expression style, grateful disposition, and depression among nursing students. The study used a quasi-experimental study with a nonequivalent control group and a non-synchronized design. Participants were 29 nursing students who were assigned to intervention and control groups. Compared to the control group, the intervention group showed significantly decreased mean scores for the trait anger, anger-in, and anger-out anger expression styles, and increased mean scores for the anger-control anger expression style and grateful disposition. Anger self-control programs might be usefully applied as extracurricular anger-management programs for nursing students.

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THE ROLE OF CANINE SURGICAL STERILIZATION AND OTHER DOG POPULATION MANAGEMENT STRATEGIES TO COMPLEMENT RABIES PREVENTION AND CONTROL PROGRAMS

Journal of Animal Health ◽

10.47604/jah.1169 ◽

2020 ◽

Vol 2 (1) ◽

pp. 62

Author(s):

Jiregna Dugassa ◽

Abebe Fromsa ◽

Abebe Wirtu

Keyword(s):

Prevention And Control ◽

Population Control ◽

Management Strategies ◽

Control Program ◽

Population Management ◽

Control Programs ◽

Surgical Sterilization ◽

And Control ◽

Rabies Prevention

Purpose: To assess the role of canine surgical sterilization and other dog population management strategies to complement rabies prevention and control programs. Findings: Rabies is highly fatal viral anthropozoonotic disease which is caused by virus of the genus Lyssavirus and transmitted from rabid animals to humans by bite or scratch from rabid animals. Rabies is preventable and controllable disease through integration of one or more animal population control and vaccination methods. However, the primary focus of a rabies control program in dogs is vaccination by implementation of mass dog vaccination aiming for 70% vaccination in order to promote and maintain levels of protection above thresh hold between campaigns which consequently reduces ongoing transmission. Not only these but also, interlinking of one or more of other DPM tools such as prevention and control of reproduction, acceptable euthanisation, surgical sterilization, education and legislation of responsible dog ownership can create effective DPM programs. In developing country the integration of animal birth control and vaccination is not at grass root level so well coordination of veterinarians, human health professionals and other stake holders are vital.

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An Inter-Disciplinary Approach to the Development of a Low-Consumption Prototype for the European Shell Eco-Marathon

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.875-877.977 ◽

2014 ◽

Vol 875-877 ◽

pp. 977-982

Author(s):

Teresa Donateo ◽

Fabio Ingrosso ◽

Angelo Nicolì ◽

Andrea Taurino

Keyword(s):

High Efficiency ◽

Test Phase ◽

Power Train ◽

Vehicle Shape ◽

Definition Of ◽

And Control ◽

Low Consumption

The paper describes the design, the test and the optimization of a prototype for the European Shell Eco-Marathon (SEM) competition. The design step includes the definition of vehicle shape, materials, structure, tires, power-train and control with an inter-disciplinary approach. The test phase was performed both numerically and experimentally. The vehicle, named Carla 2012 has been build at the DII (Department of Innovation Engineering) at Università Del Salento and tested on the facilities available at the Nardò Technical Center and was able to satisfy all the specifics of SEM regulation in 2012 edition. The optimization step is aimed at defining an innovative powertrain and an high-efficiency race strategy in order to achieve 3000 km with the equivalent of 1 liter of gasoline.

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A computer-control program for TEM in situ fatigue experiments

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100155074 ◽

1989 ◽

Vol 47 ◽

pp. 620-621

Author(s):

Kenneth S. Vecchio ◽

John A. Hunt

Keyword(s):

Slow Crack Growth ◽

Computer Control ◽

Control Program ◽

Video Tape ◽

Computer Control System ◽

Transmission Electron ◽

In Situ Experiments ◽

Tremendous Amount ◽

And Control

In-situ experiments conducted within a transmission electron microscope provide the operator a unique opportunity to directly observe microstructural phenomena, such as phase transformations and dislocation-precipitate interactions, “as they happen”. However, in-situ experiments usually require a tremendous amount of experimental preparation beforehand, as well as, during the actual experiment. In most cases the researcher must operate and control several pieces of equipment simultaneously. For example, in in-situ deformation experiments, the researcher may have to not only operate the TEM, but also control the straining holder and possibly some recording system such as a video tape machine. When it comes to in-situ fatigue deformation, the experiments became even more complicated with having to control numerous loading cycles while following the slow crack growth. In this paper we will describe a new method for conducting in-situ fatigue experiments using a camputer-controlled tensile straining holder.The tensile straining holder used with computer-control system was manufactured by Philips for the Philips 300 series microscopes. It was necessary to modify the specimen stage area of this holder to work in the Philips 400 series microscopes because the distance between the optic axis and holder airlock is different than in the Philips 300 series microscopes. However, the program and interfacing can easily be modified to work with any goniometer type straining holder which uses a penrmanent magnet motor.

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The Diabetic Retinopathy Screening, Prevention and Control Program

Case Medical Research ◽

10.31525/ct1-nct04240652 ◽

2020 ◽

Author(s):

Keyword(s):

Diabetic Retinopathy ◽

Prevention And Control ◽

Control Program ◽

Diabetic Retinopathy Screening ◽

And Control ◽

Retinopathy Screening

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Design, Construction, and Control for an Underwater Vehicle Type Sepiida

Robotica ◽

10.1017/s0263574720000739 ◽

2020 ◽

pp. 1-18

Author(s):

M. Garcia ◽

P. Castillo ◽

E. Campos ◽

R. Lozano

Keyword(s):

Embedded System ◽

Closed Loop ◽

Underwater Vehicle ◽

Mathematical Representation ◽

Closed Loop System ◽

Vehicle Type ◽

Mathematical Equations ◽

And Control ◽

Design Construction

SUMMARY A novel underwater vehicle configuration with an operating principle as the Sepiida animal is presented and developed in this paper. The mathematical equations describing the movements of the vehicle are obtained using the Newton–Euler approach. An analysis of the dynamic model is done for control purposes. A prototype and its embedded system are developed for validating analytically and experimentally the proposed mathematical representation. A real-time characterization of one mass is done to relate the pitch angle with the radio of displacement of the mass. In addition, first validation of the closed-loop system is done using a linear controller.

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