scholarly journals The American Turboliner

1975 ◽  
Author(s):  
J. R. Pier ◽  
J. L. Foster

The background for selection of turbine trains for corridor service is examined and characteristics of the RTG Turbine Train power units described. Design criteria for future performance requirements are also developed.

2020 ◽  
Vol 4 (2) ◽  
pp. 30-35
Author(s):  
Sivajothi Paramasivam ◽  
Hari Krishnan Munisamy ◽  
Santhansamy Rayappan

Atrocities against stray animal’s especially large number of scavenging street dogs have increased at an alarming rate nationwide. Relevant authorities, in view of controlling stray animal population and curb chronic infections mulled cracking down on stray dogs using inhumane methods such as usage of tranquilizers or forcefully capturing. Thus, causing injuries, trauma and potentially death to these captured strays. Even though statistics about the number of violent incidents against strays remains unknown but animal welfare groups report constant complaints regarding animal cruelty. Animal activists mooted a request to design and built a modernize efficient yet low cost trap cage with a provision of technology which are normally ignored by many quarters; as a vehicle to educate the public on humane and compassionate ways to treat stray animals.   The design of the cage involves consists of 3 parts, which was electronics hardware, communication system and critically the structure hardware whereby to withstand the possible aggressiveness of the animal. The objective of this paper is to present and apply the techniques of the analytic hierarchy process (AHP) in the prioritization and selection of design criteria of the trap cage. The finding shows that out of 5 design criteria, quality criteria is the most important criteria in designing of a humane trap cage issue. This is followed by innovativeness, cost, safety and aesthetics factors.


2009 ◽  
pp. 366-379
Author(s):  
Jijun Lu ◽  
Swapna S. Gokhale

With the rapid development and widespread use of the Internet, Web servers have become a dominant source of information and services. The use of Web servers in business and critical application domains imposes stringent performance requirements on them. These performance requirements cast a direct influence on the choice of the configuration options of the hardware and the software infrastructure on which a Web server is deployed. In addition to the selection of configuration options, for a given level of load and a particular hardware and software configuration, it is necessary to estimate the performance of a Web server prior to deployment.


2019 ◽  
Vol 16 (8) ◽  
pp. 3351-3358
Author(s):  
Jyothi P. Phatak ◽  
L. Venkatesha ◽  
C. S. Raviprasad

The selection of motor is one of the significant factors in Electric Vehicle design. When the motor is selected based on the conventional method, its performance during starting of the EV is met but it may fail in other operating regions of the driving cycle. This is because, acceleration requirements assume zero initial speed conditions and the requirements with different initial speeds is not accounted in the conventional method. This paper discusses an alternative procedure to compute the ratings of induction motor. The preliminary method to compute the ratings is carried out based on vehicle performance requirements. The improvisation techniques in the computation are then adopted to get required acceleration and transient torque capabilities of motor to meet the driving cycle requirements. The procedure is illustrated through simulation studies using MAT lab software.


1987 ◽  
Vol 109 (2) ◽  
pp. 256-259 ◽  
Author(s):  
G. J. Mraz

Out of concern for public safety, most legal jurisdictions now require unfired pressure vessel construction to comply with the ASME Boiler and Pressure Vessel Code. Because the present two divisions of Section VIII of that Code are not well suited for high pressure design, a new division is needed [1]. The currently anticipated main design criteria of the proposed division are full plastic flow or full overstrain pressure, stress intensity in the bore, fatigue, and fracture mechanics. The rules are expected to allow better utilization of high strength steels already included in the present Section VIII. At the same time materials of even higher strength are introduced. The benefits of compressive prestress are recognized. Construction methods allowing it’s achievement, such as autofrettage, shrink fitting and wire winding are included. Reasons for selection of the criteria are given.


2011 ◽  
Vol 5 (1) ◽  
pp. 5-16
Author(s):  
Lenka Kovářová ◽  
Karel Kovář

The article presents new fi ndings regarding the evaluation system of talent prerequisites for short triathlon in the pre-peak period, i.e. in junior category (18 – 19 years). We present the current battery of tests and three case studies that bring the possibility of data interpretation. For the evaluation, we used standards (T-points) for individual tests, which illustrate intra- and interindividual diff erences with respect to a given model – the norm. We found out that a below-average result reached in one of the tested areas cannot be compensated by any above-average result in another area. Th e most important issue for the assessment of future performance in triathlon is to fi nd the lower limit of 45 T-points, rather than achieving the highest level in some of the tests. For the selection of talented athletes at the age of 18 – 19 years, it is desirable to seek an individual, who has achieved outstanding results in tests that can be considered to be less aff ected by training (ECM/BCM, VO2max, mobility and concentration of attention); however, another necessary precondition is also the high level of swimming tests with regard to age of athletes. It is rather essential to distinguish between highly trained individuals who already have the minimal capacity for improvement and may not be perspective in the categories K 23 and seniors (the peak of their careers is the junior age).


Author(s):  
J. J. Th. Van Dijk ◽  
A. J. Klijn

During the initial years of Gasunie’s existence, the early 60’s, a projection was made for the power required in various compressorstations in the grid. This projection was updated periodically and this paper reviews the 1977 update, focussing on the Ravenstein compressorstation. The main subject of the paper is the development of the design criteria for this update and the comparison with the reality of the 1979/1980 pumping season. It may be stated that the actual conditions of the pumping season have justified the selection of the criteria.


Author(s):  
Anusha Musunuru ◽  
Richard J. Porter ◽  
Tarek Sayed ◽  
Martin Fyfe

Highway and street designers deal with the challenge of designing for a broad range of driver, vehicle, and roadway characteristics and conditions. There is significant variability in design inputs and design controls that influence design criteria and design decisions. This variability has traditionally been considered implicitly through selected values for geometric design parameters and criteria. Average values are used when the variability in the input design parameters is small. Conservative values are used if the variability is larger, often the case within the highway geometric design context. Previous research has demonstrated that addressing this variability and uncertainty more explicitly as part of design decisions can lead to better-informed and more cost-effective design decisions. Probabilistic design approaches that quantify both risk and reliability have been successfully incorporated into other design disciplines for those reasons. These approaches have also been explored in the highway geometric design literature and have shown promise. They are likely to be central to future performance-based design initiatives, as outlined in a recently published framework on conducting performance-based geometric design analysis. Given the emerging importance of performance-based design and the need to address challenges regarding the current method of handling variability and uncertainty in the input design parameters, this paper presents a collective review and assessment of methodological alternatives for quantifying risk and reliability associated with geometric design criteria and decisions.


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