1,720,958 research outputs found
ADVANCED COMPOSITE MATERIAL USED IN SCRAMJET ENGINE
No full textPropelled flying machine motors require propelled materials to meet their objectives of execution, push to-weight proportion, and eco-friendliness. There are three primary materials-related drivers for the improvement of cutting edge motors.This paper chiefly centers around a concise audit of the present status of composite materials, for example, Polymer lattice composites, Metal network composites and Ceramic Matrix Composites (CMCs)
PERFORMANCE OF VEHICLE USING TWIN TURBOCHARGER
No full textSeveral turbocharger units can be used for engine boosting in series or parallel arrangements in which they are phased in and out according to the operating conditions of the engine. This technology has the potential to facilitate downsizing of automotive engines in order to yield benefits in terms of their transient performance, the fuel consumption and emissions output. This review investigates the benefits and drawbacks of series and parallel Turbocharging arrangements. Since the effectiveness of using the boosting technology crucially depends on the control scheme applied, developments in the modeling and controlapproaches used in single-stage, series and parallel Turbocharging are also examined
REVIEW ON EXPERIMENTAL STUDY ON CONCRETE WITH WASTE GRANITE POWDER AS AN ADMIXTURE
No full textGranite fines which are the byproduct produced in granite factories while cutting huge granite rocks to the desired shapes. Granite fines are used as a filler material in the concrete, replacing the fine aggregate which will help in filling up the pores in the concrete. Filling up of the pores by granite fines increase the strength of the concrete and also a material which is abundantly to investigate the strength behavior of concrete with use of granite fines as an additive. So it can be concluded that when locally available granite is a good partial substitute to concrete and improves compressive, tensile and flexure characteristics of concrete, while simultaneously offsetting the overall cost of concrete substantially
OPTIMISATION OF PROCESS PARAMETER IN TURNING OPERATION USING TAGUCHI METHOD
No full textTurning process is the one of the methods to remove material from cylindrical and non-cylindrical parts. In any machining process, it is most important to determine the optimal settings ofmachining parameters aiming at reduction of production costs and achieving the desired product quality.The material removal rate has been identified as the qualitytraits and assumed to be directly linked to productivity. Thereare three important cutting parameters namely, cutting speed,feed rates and depth of cut, which has been considered duringthe turning operation. An Orthogonal array has beenconstructed to determined the signal-to-noise (S/N) ratio
A REVIEW PAPER ON MACHINING OPITMIZATION USING TAGUCHI METHOD FOR CNC TURNING OPERATION
No full textIn this study, a try is made to take a look at that how is we able to improve the machining limits in turning methods. On this, we’re essentially doing the usage of optimization approach on CNC machines. There’s one of the best technique of optimization, which is the Taguchi approach. Taguchi techniques are statistical methods, or once in a while referred to as sturdy layout methods. However, here we are able to be the usage of Taguchi approach for its more simpleness. Taguchi technique is a new engineering design optimization way(s) of doing things that improve the excellent of present merchandise and tactics and reduces their prices right away. Taguchi technique makes the product or process strong and healthful and consequently is also known as a robust layout. In this paper, the application potential of CNC turning process has been classified under certain criteria
MODIFICATION AND CORRECTIVE ACTION OF OIL GROOVE FOR HIGH PERFORMANCE BEARINGS
No full textThe article deals with the failure of bearings due to oil starvation due to absence of sufficient oil film between the bearing and the journal permits metal-to-metal contact this resulting wiping action causes premature bearing fatigue and High loads applied to the bearings result in a reduction of minimum oil film thickness so to prevent such failure specific load applied to the grooved bearing may be lowered by means of a reduction in groove width by modification in groove design
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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