Bibliographies thématiques / Straight Forward Method

Littérature scientifique sur le sujet « Straight Forward Method »

Auteur : Grafiati
Publié le 10 mars 2023

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Articles de revues sur le sujet "Straight Forward Method"

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Howe, Peter W. A. « A straight-forward method of optimising protein solubility for NMR ». Journal of Biomolecular NMR 30, no 3 (novembre 2004) : 283–86. http://dx.doi.org/10.1007/s10858-004-3739-4.

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Cheng, Guixi, Hu Zhu et Dongwon Jung. « Research on the Negative Multistage Incremental Forming of Straight-Wall Parts Based on the Extrusion from the Forward and Reverse Side of the Sheet ». Metals 12, no 3 (9 mars 2022) : 459. http://dx.doi.org/10.3390/met12030459.

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Because the forming area involved in traditional reverse multistage incremental forming is only located inside the model, the sheet-metal thinning rate is relatively large. Particularly, the straight-wall parts with a narrow internal space cannot be formed using traditional multistage incremental forming. Therefore, a negative multistage incremental forming that extrudes the sheet from the forward and the reverse side of the straight-wall part is proposed in this paper. In this method, firstly, the auxiliary surface is generated to divide the straight-wall part model into three forming regions; secondly, the first- and second-stage forming are carried out from the forward side of the straight-wall part with support, respectively; Thirdly, the third-stage forming is carried out from the forward side of the straight-wall part without support. The software system for auxiliary-surface generation, the straight-wall parts partition, each intermediate-stage-forming model, and each stage-forming toolpath generation was developed by using C++, VC++, and OpenGL library. In order to verify the feasibility of the proposed method in this paper, the forming experiments of a 1060 aluminum sheet were conducted using traditional reverse multistage forming and the proposed method in this paper, and the forming effects were compared and analyzed. The results show that compared with traditional reverse multistage incremental forming with forward-side extrusion, the multistage incremental forming method with the forward and the reverse-sided extrusion proposed in this paper can increase the area of the sheet participating in the deformation and avoid the problem of excessive thinning of sheet thickness, especially suitable for the straight-wall part model with narrow internal space.
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Chen, Shiang-Fong, et Jiansong Deng. « A Geometric Path Planner for Car-like Robots ». Journal of Mechanical Design 122, no 3 (1 mai 1999) : 343–46. http://dx.doi.org/10.1115/1.1288403.

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This technical brief presents a refined slabbing method, originally used for free-flying robots, for finding efficient paths for nonholonomic robots. Our method takes kinematic constraints and reversal maneuvers into account. We create orientation levels for each orientation configuration of the robot. The slopes of slabbing lines in each orientation level match the orientation of a robot in that level. The resulting slabbing lines act as “rails” to guide the robot. Thus, a robot, if it keeps moving in a given orientation level, can only translate straight forward or straight backward along a given slabbing line. Limiting robot movement to straight forward or straight backward along a slabbing line prevents the robot from violating kinematic constraints, by moving sideways to another slabbing line. [S1050-0472(00)01403-3]
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Ledwith, Deirdre M., Aine M. Whelan et John M. Kelly. « A rapid, straight-forward method for controlling the morphology of stable silver nanoparticles ». Journal of Materials Chemistry 17, no 23 (2007) : 2459. http://dx.doi.org/10.1039/b702141k.

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GOTO, Tomonobu, Daisuke SHIRAGA, Shunsuke NAKAMURA, Shotaro YAMAZAKI, Tonau NAKAI, Masaharu NISHIMURA, Yuki MITSUI et Shinji AKAMATSU. « A conventional method for acoustic impedance eduction in a flow duct based on the straight forward method ». Transactions of the JSME (in Japanese) 85, no 879 (2019) : 19–00042. http://dx.doi.org/10.1299/transjsme.19-00042.

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Nakamura, Tamotsu, Niels Bay et Zhi-Liang Zhang. « FEM Simulation of a Friction Testing Metliod Based on Combined Forward Conical Can-Backward Straight Can Extrusion ». Journal of Tribology 120, no 4 (1 octobre 1998) : 716–23. http://dx.doi.org/10.1115/1.2833770.

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A new friction testing method based on combined forward conical can-backward straight can extrusion is proposed in order to evaluate friction characteristics in severe metal forming operations. By this method the friction coefficient along the conical punch surface is determined knowing the friction coefficient along the die wall. The latter is determined by a combined forward and backward can extrusion of straight cans. Calibration curves determining the relationship between punch travel, can heights, and friction coefficient for the two tests are calculated based on a rigid-plastic FEM analysis. Experimental friction tests are carried out in a mechanical press with aluminium alloy A6061 as the workpiece material and different kinds of lubricants. They confirm that the theoretical analysis results in reasonable values for the friction coefficient.
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Chen, Jian, Ke Tian Li, Xiang Bo Ouyang et Shao Hua Ding. « The 3D Measuring Method Based on the Color Coding Grating ». Applied Mechanics and Materials 109 (octobre 2011) : 385–89. http://dx.doi.org/10.4028/www.scientific.net/amm.109.385.

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This paper puts forward a new method of 3D measurement which based on the color coding structure light technology, projects the specific color coding grating to a Calibration board in RGB three color space, gets the straight line equation of grating which projected to Calibration board in the world coordinate system, obtains each projection plane of code through plane fitting, then joins the projection planes and the object imaging straight strips which through the camera focus, it can be get that the three dimensional coordinates of the objects. This method is simple and reliable; only need one camera and one projector without scanning; only one image is needed to get the information of a full frame depth image. It is suitable for high speed, real-time online measurement.
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Sul, Hoseok, Raegeun Oh, Wonjun Yang, Young Geul Yoon, Jee Woong Choi, Sangkyu Han et Bumsoo Kwon. « A Study on Mine Localization of Forward Looking Sonar Considering the Effect of Underwater Sound Refraction ». Journal of the Korea Institute of Military Science and Technology 25, no 3 (5 juin 2022) : 231–38. http://dx.doi.org/10.9766/kimst.2022.25.3.231.

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Mine detection has been mainly studied with images of the forward-looking sonar. Forward-looking sonar assumes the propagation path of the sound wave as a straight path, creating the surrounding images. This might lead to errors in the detection by ignoring the refraction of the sound wave. In this study, we propose a mine localization method that can robustly identify the location of mines in an underwater environment by considering the refraction of sound waves. We propose a method of estimating the elevation angle of arrival of the target echo signal in a single receiver, and estimate the mine location by applying the estimated elevation angle of arrival to ray tracing. As a result of simulation, the method proposed in this paper was more effective in estimating the mine localization than the existing method that assumed the propagation path as a straight line.
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Oeggl, Reinhard, Juliane Glaser, Eric von Lieres et Dörte Rother. « Continuous enzymatic stirred tank reactor cascade with unconventional medium yielding high concentrations of (S)-2-hydroxyphenyl propanone and its derivatives ». Catalysis Science & ; Technology 11, no 24 (2021) : 7886–97. http://dx.doi.org/10.1039/d0cy01666g.

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How can high product concentrations be continuously provided, while dealing with substrate toxicity? Which method leads to a straight forward product isolation? The example of a model based process intensification shows how.
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Mishra, Richa, et Lokman H. Choudhury. « Catalyst-free microwave-assisted arylglyoxal-based multicomponent reactions for the synthesis of fused pyrans ». RSC Advances 6, no 29 (2016) : 24464–69. http://dx.doi.org/10.1039/c5ra25536h.

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A simple and straight forward method has been reported for the synthesis of fused pyrans from the three component reactions of arylglyoxals, cyclic 1,3-dicarbonyls and malononitrile under microwave and catalyst free conditions.
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Thèses sur le sujet "Straight Forward Method"

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HAMID, RASHIDI. « Development of a novel grazing flow test rig for acoustic liners’ assessment ». Doctoral thesis, 2021. http://hdl.handle.net/2158/1240290.

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This research activity addresses the development of a test bench for acoustic measurements in a thermally hostile environment, representative of the exhaust in an aircraft engine, for liner characterization purposes. In this regard, a brand-new rig at the Department of Industrial Engineering (DIEF) of the University of Florence (UniFI) was designed and is introduced in detail. The design of this experimental asset, which would be the combination of a high-speed wind tunnel and an acoustic test rig, has been carefully addressed. The rig is presented and its capability to support reliable acoustic tests is preliminarily verified. The impedance of a liner sample is assessed by means of a data reduction process, considering both a 2D and a 3D incoming acoustic field inside the test-section. Results are promising and show the capability of the developed rig to achieve reliable acoustic information in a defined frequency band.
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Livres sur le sujet "Straight Forward Method"

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Stauffer, Donald W. Piano tuning for musicians & teachers : An easy, straight forward method of tuning to assist the musician & music teacher to care for his own piano and to gain a better perspective of the enigma of temperament. Birmingham, AL : Stauffer Press, 1989.

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Chapitres de livres sur le sujet "Straight Forward Method"

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Karagiannaki, Ioulia, Yannis Pantazis, Ekaterini Chatzaki et Ioannis Tsamardinos. « Pathway Activity Score Learning for Dimensionality Reduction of Gene Expression Data ». Dans Discovery Science, 246–61. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-61527-7_17.

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Abstract Molecular gene-expression datasets consist of samples with tens of thousands of measured quantities (e.g., high dimensional data). However, there exist lower-dimensional representations that retain the useful information. We present a novel algorithm for such dimensionality reduction called Pathway Activity Score Learning (PASL). The major novelty of PASL is that the constructed features directly correspond to known molecular pathways and can be interpreted as pathway activity scores. Hence, unlike PCA and similar methods, PASL’s latent space has a relatively straight-forward biological interpretation. As a use-case, PASL is applied on two collections of breast cancer and leukemia gene expression datasets. We show that PASL does retain the predictive information for disease classification on new, unseen datasets, as well as outperforming PLIER, a recently proposed competitive method. We also show that differential activation pathway analysis provides complementary information to standard gene set enrichment analysis. The code is available at https://github.com/mensxmachina/PASL.
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Liu, Wanli, et Weiyan Xin. « Study on Flow Distribution on Diversion Surface at the Head of Sandbar in Bifurcated Reach ». Dans Lecture Notes in Civil Engineering, 210–18. Singapore : Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6138-0_19.

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AbstractThe rule of flow distribution in the diversion region at the head of sandbar of bifurcated reach is studied. The results show that there are diversion points and stagnation points in the diversion area at the head of sandbar in straight-bifurcated reach, and there exists diversion surface due to the difference between flow directions of surface and bottom in the diversion area at the head of sandbar in meandering-bifurcated reach. The concept of diversion surface is put forward through the study. It refers to the curved surface along vertical direction calculated according to the diversion ratio of two branches in the local reach of the head of sandbar in diversion area. Natural flow characteristics at the head of typical bifurcated reach in the middle reaches of the Yangtze River are studied based on the concept of diversion surface, and the layout principle of regulation project at the head of sandbar in bifurcated reach is put forward, that is, the project at the head of sandbar should be set near the relatively stable diversion surface if the diversion ratio of two branches is not planned to be changed, while the purpose can be achieved by deflecting the starting point of the project to one side if it is made to play the role of changing the diversion ratio of two branches. The proposal of the concept and calculation method of diversion surface provides a theoretical basis for the design and construction of location of regulation works in bifurcated reach.
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Serrano-Sánchez, Federico, Mouna Gharsallah, Julián Bermúdez, Félix Carrascoso, Norbert M. Nemes, Oscar J. Dura, Marco A. López de la Torre, José L. Martínez, María T. Fernández-Díaz et José A. Alonso. « Nanostructured State-of-the-Art Thermoelectric Materials Prepared by Straight-Forward Arc-Melting Method ». Dans Thermoelectrics for Power Generation - A Look at Trends in the Technology. InTech, 2016. http://dx.doi.org/10.5772/65115.

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Sarhosis, Vasilis. « Micro-Modeling Options for Masonry ». Dans Computational Modeling of Masonry Structures Using the Discrete Element Method, 28–60. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-5225-0231-9.ch002.

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In this chapter, a review of the available methods and their challenges to simulate the mechanical behavior of masonry structures are presented. Different micro-modeling computational options are considered and compared with regard to their ability to define the initial state of the structure, realism in simulation, computer efficiency and data availability for their application to model low bond strength masonry structures. It is highlighted that different computational approaches should lead to different results and these will depend on the adequacy of the approach used and the information available. From the results analysis it is also highlighted that a realistic analysis and assessment of existing masonry structures using numerical methods of analysis is not a straight forward task even under full knowledge of current conditions and materials.
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Djojodihardjo, Harijono. « Acoustic Method for the Suppression of Acoustic and Aerodynamically Induced Vibration on Structures ». Dans Modeling and Simulation Techniques in Structural Engineering, 1–37. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-0588-4.ch001.

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The close relationship between noise and vibration is reviewed and analyzed for the suppression of noise and vibration in structures. The suppression of noise and vibration by acoustic means are addressed. For the first, an analysis is carried out by representing noise by monopoles and higher harmonics, and to devise a straight-forward method to counter their influence by selective secondary acoustic source. The second problem is analyzed using a methodology developed earlier for the computational scheme for the calculation of the acoustic disturbance to the aeroelasticity of structures. The generic approach of the latter consists of three parts. The first is the formulation of the acoustic wave propagation governed by the Helmholtz equation by using boundary element approach, to allow the calculation of the acoustic pressure on the acoustic-structure boundaries. The structural dynamic problem is formulated using finite elements. The third part involves the calculation of the unsteady aerodynamics loading on the structure using generic unsteady aerodynamics computational method.
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Deng, Jie, et Nansha Gao. « Periodic Acoustic Black Holes to Mitigate Sound Radiation from Cylindrical Structures ». Dans Acoustic Emission - New Perspectives and Applications. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.101959.

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Acoustic black holes (ABHs) achieved by progressively diminishing structural thickness have been proved a very efficient approach for wideband vibration reduction, sound suppression, energy harvesting, and wave manipulation. In this chapter, the focus is placed on mitigating the sound emitted from cylindrical shells with embedded ABHs. In the applications of aeronautics, astronautics, and underwater vehicles, cylindrical shells are very common yet the vibroacoustic problems in such structures are very challenging. Even the researches on ABHs for straight beams and flat plates are boosting in recent years, the ABH effect is unclear for curved structures thus it deserves further investigations to push forward their applications. Since cylindrical shells are usually long in, for example, airplanes and rockets, periodic ABHs are designed to alleviate the acoustic emission from them. The Gaussian expansion method (GEM) is employed to recover the vibration field on the cylinder and, based on that, the sound radiation model is developed to determine the emitted sound power level (SWL). The band gaps (BGs) are shown for infinite periodic ABH shells, followed by the vibroacoustic level for a finite periodic shell. Particularly, axial stiffeners are introduced and the influences of their quantity and width are carried out.
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« Figure 7.12 : inductive and deductive reasoning It should not be overlooked that each inference placed by someone constructing an argument asserting Anna’s guilt can provoke one of the following counterresponses : (1) An explanation as to why the assertion is misguided. (Explain it away!) (2) A straight denial. (Deny the validity or existence of the evidentiary fact backing your inference.) (3) A rival evidential fact is set up and asserted. In fact it is important when setting up an argument that the potential dangers of inference are considered. For there are loopholes for error and one of the most common is overlooking the fact that sometimes there is just a plurality of causes. There can be alternative explanations. The important task is to identify possible alternative conclusions and test them out. The question then becomes which are the stronger inferences ? Does your favoured argument look strong or does a counterargument stand up ? As noted above inductive reasoning is the closest to everyday legal reasons, as inductive reasoning involves putting forward a conclusion that seems strong, based on inferences that provide evidence in favour of one party. So, your final argument will consist of a range of propositions or assertions that will invariably be backed by evidence. For some law problems, a cluster of arguments may need to be set up dealing with separate issues. » Dans Legal Method and Reasoning, 234. Routledge-Cavendish, 2012. http://dx.doi.org/10.4324/9781843145103-179.

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Bleakley, Chris. « Introduction ». Dans Poems That Solve Puzzles, 1–8. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198853732.003.0014.

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The Introduction explains what an algorithms is, provides three examples, and exposes the relationship between algorithms and computers. An algorithm is a sequence of well-defined steps which solve an information problem. The chapter begins with the simple example of an algorithm for sharing sweets. The chapter highlights the elegance of effective algorithms and shows how they are written down. It then moves on to explain a straight-forward algorithm for sorting books. An alternative algorithm for more quickly sorting books is presented and contrasted. By definition, a computer is a machine that performs algorithms. The chapter explains how algorithms are the underlying methods that computers follow to process data and make decisions.
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« A lawyer may need to argue convincingly that the part of the previous judgment that is being relied on by an opponent is not part of the reasoning process leading to judgment ; that it was an ‘aside’ comment, based on a hypothetical situation (technically referred to as an obiter dictum comment). On the other hand, perhaps the only argument a lawyer has to support the client’s position is an aside comment. If the comment was made by a senior judge in the Court of Appeal or the House of Lords, and it is a relevant comment on the exact circumstances of the present case, then it could be argued that this is an important indicator of what that court would do if such a case came before it. Cases in the higher appellate courts, the Court of Appeal and the House of Lords, contain more than one judgment. Usually, there are three in the Court of Appeal and five in the House of Lords, but there can be more in an important case. Here, the lawyer’s task in ascertaining the strength of a precedent in a previous case may be more difficult. Often, there will be a dissenting judgment. This judgment can eventually, through a range of other cases, come to represent the majority view of an area of law. If the judge who is dissenting has a particular reputation for excellence, then the judgment will be seriously considered by those coming to read the case for the precedential value of the majority judgments. In time, the argument presented by the dissenting judge, the minority view, may be accepted as the more appropriate way forward. English law, as created, developed and refined in the courts, does not resemble a straight line of development ; rather, it is a winding road of distinctions, consideration of majority and minority views, determinations according to similarity, more judgments, then more distinctions. Change is slow but English law remains flexible. 4.5 THE DOCTRINE OF PRECEDENT IN PRACTICE : HANDLING LAW REPORTS When law cases in any area are considered, it is important that the reader knows several things about the case for future usage. These are set out in Figure 4.7, below. Most importantly, law reports have a standard layout. Carefully consider Figures 4.8 and 4.9, below. 4.5.1 What happens if a judge does not like a precedent ? Some judges are better than others at ‘dodging’ precedent : If a judge of reasonable strength of mind thought a particular precedent was wrong he must be a great fool if he couldn’t get round it. [Lord Radcliffe (House of Lords) in an interview with Alan Patterson (1984).] Yet, contrast this with the following quotation : I am unable to adduce any reason to show that the decision which I am about to pronounce is right—but I am bound by authority which of course it is my duty to follow. [Per Buckley LJ, Olympia Oil and Cake Co Ltd v Produce Brokers Ltd (1915) 21 Com Cas 320.] ». Dans Legal Method and Reasoning, 87. Routledge-Cavendish, 2012. http://dx.doi.org/10.4324/9781843145103-65.

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Gartner, Scott Sigmund, Chin-Hao Huang, Yitan Li et Patrick James. « Theorizing about Identity, Change in Capabilities and Dyadic Relations : An Approach Based on Analytic Eclecticism and Systemism ». Dans Identity in the Shadow of a Giant, 65–90. Policy Press, 2021. http://dx.doi.org/10.1332/policypress/9781529209877.003.0004.

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This chapter theorizes about identity, change in capabilities and dyadic relations. It shows that the frame of reference for this work combines analytic eclecticism and systemism. Analytic eclecticism guides assembly of causal mechanisms into an integrated whole, while systemism — a means towards visual representation of hypotheses — provides the method. The chapter argues that the Taiwanese identity, the rise of China, cross-Strait relations, and the role of the United States are connected to each other and depicted within a figure created under the rules put forward by systemism. It then proceeds to review paradigmatic thinking and concludes that it is insufficient to provide a basis for theorizing in the complex and fast-paced context of the rise of China, shifting Taiwanese identity, cross-Strait relations and US influence. It discusses the means towards building and depicting theory: analytic eclecticism and systemism, and it assembles the causal mechanisms gleaned from the diverse academic literature into a visual representation.
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Actes de conférences sur le sujet "Straight Forward Method"

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Murakami, H. « A Moving Frame Method for Multi-Body Dynamics ». Dans ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62833.

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Élie Cartan’s moving frame method, developed in differential geometry, has been applied to multi-body dynamics to derive equations of motion. The explicit representation of a body-attached orthonormal coordinate basis and its origin, referred to as a moving frame, enables the usage of the special orthogonal group, SO(3), and the special Euclidean group, SE(3), to describe kinematics and kinetics of interconnected bodies by joints and force elements. The moving frame representation using Theodore Frankel’s compact notation is adopted to alleviate theoretical complexities of the Lie group theory to which SO(3) and SE(3) belong. For the variational formulation, the restricted variation of angular velocity is derived for the moving frame method. Starting from two connected rigid bodies, it will be demonstrated that the explicit representation of moving frames renders straight-forward symbolic computations of three-dimensional kinematics and kinetics. This simplicity eliminates errors in computing analytical expressions for kinematic and kinetic variables and streamlines the coding effort for numerical solution. For controller design, if the degrees-of-freedom is small, the moving frame method allows a straight-forward derivation of equations of motion in analytical form.
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Jie, Yang, Li Haitao, Rui Chengjie, Wei Wenjun et Dong Xuezhu. « Research on a Generating Method of Spiral Flutes of Hourglass Worm Gear Hob ». Dans ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-67053.

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All of the cutting edges on an hourglass worm gear hob have different shapes and spiral angles. If the spiral angles are small, straight flutes are usually adopted. But for the hob with multiple threads, the absolute values of the negative rake angles at one side of the cutting teeth will greatly affect the cutting performance of the hob if straight flutes are still used. Therefore, spiral flutes are usually adopted to solve the problem. However, no method of determination of the spiral flute of the hourglass worm gear hob has been put forward till now. Based on the curved surface generating theory and the hourglass worm forming principle, a generating method for the spiral flute of the planar double enveloping worm gear hob is put forward in this paper. A mathematical model is built to generate the spiral flute. The rake angles of all cutting teeth of the hob are calculated. The laws of the rake angles of the cutting teeth of four hobs with different threads from one to four threads are analyzed when straight flutes and spiral flutes are adopted respectively. The laws between the value of the negative rake angles of the hob with four threads and the milling transmission ratio are studied. The most appropriate milling transmission ratio for generating the spiral flute is obtained. The machining of the spiral flutes is simulated by a virtual manufacturing system and the results verify the correctness of the method.
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Chen, Shiang-Fong, et Jiansong Deng. « A Geometric Path Planner for Car-Like Robots ». Dans ASME 1999 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/detc99/dac-8652.

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Abstract This paper presents a simple geometric method for planning collision-free paths for car-like robots. A slabbing method, originally used for free-flying robots, is refined, by taking kinematic constraints and reversal maneuvers into account, for finding efficient nonholonomic paths. Successive configuration spaces are computed for different robot orientations. Resulting configuration spaces are called “orientation levels”. Each orientation level is slabbed by a group of parallel slabbing lines. The slopes of slabbing lines in each orientation level are positioned to have the same orientation as a robot in that level. The resulting slabbing lines act as “rails” to guide the robot. Thus, a robot can only translate straight forward or straight backward, if it keeps moving in a given orientation level. Limiting robot movement to straight forward or straight backward along slabbing lines prevents a robot from violating kinematic constraints, by moving sideways across slabbing lines. Our proposed algorithm has been fully implemented. Performance of our path planner is demonstrated by four examples.
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Kasaiezadeh, Alireza, Amir Khajepour et Hamid Jahed. « Using Level Set Method in Order to Design Structures Against Buckling ». Dans ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-28942.

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The level set approach has been used as a powerful tool in designing structures with a proper safety margin against stability and buckling issues. In this article a closed form equation for critical buckling load of any arbitrary topology has been proposed and employed in Level Set formulation in order to maximize it. Results show that the Level Set Method is straight forward and easy to implement, with fewer limitations overall in the topology optimization of engineering structures.
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Csar, Theresa, Martin Lackner et Reinhard Pichler. « Computing the Schulze Method for Large-Scale Preference Data Sets ». Dans Twenty-Seventh International Joint Conference on Artificial Intelligence {IJCAI-18}. California : International Joint Conferences on Artificial Intelligence Organization, 2018. http://dx.doi.org/10.24963/ijcai.2018/25.

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The Schulze method is a voting rule widely used in practice and enjoys many positive axiomatic properties. While it is computable in polynomial time, its straight-forward implementation does not scale well for large elections. In this paper, we develop a highly optimised algorithm for computing the Schulze method with Pregel, a framework for massively parallel computation of graph problems, and demonstrate its applicability for large preference data sets. In addition, our theoretic analysis shows that the Schulze method is indeed particularly well-suited for parallel computation, in stark contrast to the related ranked pairs method. More precisely we show that winner determination subject to the Schulze method is NL-complete, whereas this problem is P-complete for the ranked pairs method.
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Farzbod, Farhad, et Michael J. Leamy. « Analysis of Bloch’s Method in Structures With Energy Dissipation ». Dans ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-39433.

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Bloch analysis was originally developed to solve Schro¨dinger’s equation for the electron wave function in a periodic potential field, such as found in a pristine crystalline solid. In the context of Schro¨dinger’s equation, damping is absent and energy is conserved. More recently, Bloch analysis has found application in periodic macroscale materials, such as photonic and phononic crystals. In the vibration analysis of phononic crystals, structural damping is present together with energy dissipation. As a result, application of Bloch analysis is not straight-forward and requires additional considerations in order to obtain valid results. It is the intent of this paper to propose a general framework for applying Bloch analysis in such systems. Results are presented in which the approach is applied to example phononic crystals. These results reveal the manner in which damping affects dispersion and the presence of band gaps in periodic systems.
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Sorge, Kai, et Friedrich Pfeiffer. « A Preprocessor for the Treatment of Elastic Bodies in Multibody Systems ». Dans ASME 1991 Design Technical Conferences. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/detc1991-0212.

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Abstract A preprocessor providing the inertia data of elastic bodies for multibody algorithms is considered. The desired capability of including stress stiffening terms leads to a high computational effort. The method presented allows a straight forward implementation of the basic formulas by starting with the development of a special purpose symbolic calculator. A rotating elastic ring serves as an example.
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Das, Ranjan, et Rohit Kumar Singla. « Inverse Heat Transfer Study of a Nonlinear Straight Porous Fin Using Hybrid Optimization ». Dans ASME 2014 Gas Turbine India Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gtindia2014-8101.

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Gas turbine blades are subjected to excessive heating load and for safe operation they must be properly cooled for protecting the blade material from damage. This involves external film cooling and internal pin-fin cooling. Cooling using fins are used for gas turbine blades by passing cold air over small extended surfaces. However, it is found that compared to conventional solid fins, for same weight, the usage of porous fins gives better thermal performance. In order to satisfy a given temperature distribution, the fin designer needs to determine various important properties and parameters, which requires solution of inverse problems. These parameters are generally thermo-physical properties for selecting suitable material and dimensions. In this work, an inverse heat transfer study of a porous rectangular fin using a hybrid Differential Evolution (DE)-nonlinear programming (NLP) algorithm has been carried out. The energy exchange in the porous fin is governed by conductive, convective and radiative heat transfer alongwith mass diffusion through the porous media, which makes the problem nonlinear. The fluid medium is assumed to be air. Using DE-NLP algorithm, four important parameters such as porosity, thermal conductivity of solid, length and thickness of the porous fin have been estimated for satisfying a given temperature distribution. Initially, the prescribed temperature distribution is calculated by solving a forward problem based on an implicit Runge-Kutta method working on Lobatto technique. Effects of random measurement errors, comparison of number of iterations and reconstruction distributions for the hybrid DE-NLP and individual NLP, DE schemes are performed. It is observed that the hybrid DE-NLP method converges faster than other two methods working separately. For all measurement errors, a very good reconstruction of the temperature distribution is observed using DE-NLP algorithm. In addition to this, it is found that many feasible combinations of the parameters can satisfy a given temperature distribution, which offers flexibility in selecting various parameters by adjusting the fin size, solid thermal conductivity and porosity.
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Mital, Anil, et Arunkumar Pennathur. « Choosing Between Manual and Automated Methods for Assembly Operations : A Systematic Procedure ». Dans ASME 1996 Design Engineering Technical Conferences and Computers in Engineering Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-detc/fas-1632.

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Abstract Product assembly is a major consideration when designing products for manufacture as the method of assembly (manual, hybrid, or automated) often dictates, among other things the design of components, the assembly process and associated tooling. The choice of assembly method is, on the other hand, frequently dictated by technical and economic considerations. If the technical and economic considerations favor one method over the other, the decision-making is straight forward. However, when a product can be assembled either manually or with the assistance of automated equipment, the designer is confronted with the decision to choose between the two methods. This article provides a systematic procedure for choosing the assembly method in the event both manual and automated assembly methods are technically feasible.
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Inaba, Humio, Masahiro Toida, Hiroyuki Osada et Tsutomu Ichimura. « Wavelength-tunable 2-D bioimaging and tomography based on a coherent detection imaging method with widely tunable lasers ». Dans OSA Annual Meeting. Washington, D.C. : Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.mmm7.

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We report further progress in our experimental demonstration of computer-assisted tunable laser absorption tomography (Laser CT) of biological organisms and samples. This was achieved by coherent detection imaging based on the laser heterodyne detection technique and the projection slice theorem. Its operating principle and simple demonstration have already been published.1,2 Although the idea of optical imaging inside the living body is appealing, strong light scattering by the tissues and other optical distortions create severe practical difficulties. To overcome such a diffuse optical image quality in highly turbid, scattering media, we have proposed and verified, we believe for the first time, the use of the optical heterodyne method utilizing tunable coherent laser beams. It should be stressed that this method possesses both the properties of a highly sensitive receiver and an extremely directional antenna, so that ballistic photons can be detected passing straight through multiple-forward scattering in the tissues and systems.
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