Fast optimisation procedure for the selection of L-PBF parameters based on utility function

2021 ◽  
pp. 1-13
Author(s):  
Stefania Cacace ◽  
Quirico Semeraro
Keyword(s):  
Utility Function ◽  
Optimisation Procedure ◽  
Selection Of

Analisa Pemilihan Moda Transportasi Umum Rute Tanjung Karang – Bandara Radin Inten II Dengan Stated Preference dan Uji Crame’s V

2018 ◽  
Vol 2 (2) ◽  
pp. 137
Author(s):  
Muhammad Abi Berkah Nadi
Keyword(s):  
Regression Analysis ◽  
Utility Function ◽  
Stated Preference ◽  
Technical Analysis ◽  
Chi Square ◽  
Time Headway ◽  
Independent Variable ◽  
The Relationship ◽  
Selection Of

Radin Inten II Airport is a national flight in Lampung Province. In this study using the technical analysis stated preference which is the approach by conveying the choice statement in the form of hypotheses to be assessed by the respondent. By using these techniques the researcher can fully control the hypothesized factors. To determine utility function for model forecasting in fulfilling request of traveler is used regression analysis with SPSS program. The analysis results obtained that the passengers of the dominant airport in the selection of modes of cost attributes than on other attributes. From the result of regression analysis, the influence of independent variable to the highest dependent variable is when the five attributes are used together with the R square value of 8.8%. The relationship between cost, time, headway, time acces and service with the selection of modes, the provision that states whether or not there is a decision. The significance of α = 0.05 with chi-square. And the result of Crame's V test average of 0.298 is around the middle, then the relationship is moderate enough.

Multi-Criteria Decision Methodology for Supplier Selection in Building Industry

2018 ◽  
Vol 7 (4) ◽  
pp. 49-58
Author(s):  
Daniela Borissova ◽  
Zornitsa Agresimova Atanassova
Keyword(s):  
Utility Function ◽  
Supplier Selection ◽  
Green Buildings ◽  
Current Paper ◽  
Building Industry ◽  
Materials Used ◽  
Building Project ◽  
Selection Of

The current paper proposes a multi-criteria decision methodology to determine the most reliable supplier for green buildings. The selection of a supplier for the construction of green buildings should meet different criteria due to the specifics of the materials used, a predetermined budget, and fixed deadlines. The proposed methodology is based on localization of possible suppliers around the building project up to an acceptable distance. The methodology can use different methods based on utility function to perform the selection. This methodology could be integrated as a separate module for logistics in the determination of supplier selection.

Evaluating Bayesian adaptive randomization procedures with adaptive clip methods for multi-arm trials

2021 ◽  
pp. 096228022199596
Author(s):  
Kim May Lee ◽  
J Jack Lee
Keyword(s):  
Utility Function ◽  
Early Time ◽  
Heuristic Approach ◽  
Data Driven ◽  
Selection Strategy ◽  
Adaptive Randomization ◽  
Wide Range ◽  
Undesirable Property ◽  
Utility Approach ◽  
Selection Of

Bayesian adaptive randomization is a heuristic approach that aims to randomize more patients to the putatively superior arms based on the trend of the accrued data in a trial. Many statistical aspects of this approach have been explored and compared with other approaches; yet only a limited number of works has focused on improving its performance and providing guidance on its application to real trials. An undesirable property of this approach is that the procedure would randomize patients to an inferior arm in some circumstances, which has raised concerns in its application. Here, we propose an adaptive clip method to rectify the problem by incorporating a data-driven function to be used in conjunction with Bayesian adaptive randomization procedure. This function aims to minimize the chance of assigning patients to inferior arms during the early time of the trial. Moreover, we propose a utility approach to facilitate the selection of a randomization procedure. A cost that reflects the penalty of assigning patients to the inferior arm(s) in the trial is incorporated into our utility function along with all patients benefited from the trial, both within and beyond the trial. We illustrate the selection strategy for a wide range of scenarios.

Study on Highway Transportation Route Selection of Heavy and Oversize Cargo

2015 ◽  
Vol 730 ◽  
pp. 25-28
Author(s):  
Yan Mei Zhou ◽  
Chuan Hua Zeng ◽  
Fei Xian
Keyword(s):  
Utility Function ◽  
Linear Model ◽  
Limiting Factors ◽  
Route Selection ◽  
Shortest Path Algorithm ◽  
Highway Transportation ◽  
Objective Model ◽  
The Cost ◽  
Transportation Route ◽  
Selection Of

<p class="p16">  This paper discussed the main limiting factors that affects the transportion route selection of heavy and oversize cargo and established the cost and time dual objective linear model on the basis of these limiting factors. By establishing the multi-attribute utility function, this dual objective linear model was transformed into the single objective model under the principle of maximizing the multi-attribute utility function value.The optimal route was obtained by using the Dijkstra shortest path algorithm in the model solution.</p>

scholarly journals Selection of Optimal Thermochemical Treatment of Steel Guides of Yarn

2019 ◽  
Vol 27 (6(138)) ◽  
pp. 27-33
Author(s):  
Stanisław Płonka ◽  
Robert Drobina ◽  
Dariusz Jędrzejczyk ◽  
Jacek Postrożny
Keyword(s):  
Surface Layer ◽  
Thermochemical Treatment ◽  
Pairwise Comparison ◽  
Case Depth ◽  
Case Hardening ◽  
Ring Spinning ◽  
Individual Decisions ◽  
The Individual ◽  
Optimisation Procedure ◽  
Selection Of

This paper presents a method of selection of an optimal (the best possible) thermochemical treatment of a steel guide of yarn for a ring spinning frame with the use of an optimisation procedure based on assumed criteria, and with consideration of their importance. Yarn guides for a ring spinning frame were manufactured from three brands of steel and were subjected to the following types of thermochemical treatment: 50SiCr4 steel (chrome hardening, diffusion boronising, and titanising); 41CrAlMo7 steel (nitrosulfiding and nitrogen case hardening), and C45 steel (diffusion boronizing). Unit manufacturing costs and six criteria of manufacturing quality: four parameters of surface texture (Rq, Rp, RΔq, rw), maximal hardness of the surface layer (HV0,1), and the case depth of the surface layer (gww), were taken as criteria for assessment. Values of the assessment criteria obtained from calculations and measurements were subjected to normalisation. The knowledge of experts and importance matrix B evaluated with the use of the Saaty method (consisting in pairwise comparison of the successive criteria) were used to determine the importance of the criteria taken for the assessment. Using the Power method, eigenvalues of matrix B were found, as well as corresponding coordinates yt of the eigenvector, which are simultaneously the weights of the corresponding criteria. Normalised decisions were created in the next step by raising each component of the normalised assessments to a power equal to the corresponding weight. In the last step of the procedure, a single optimal lining-up was created comprising the smallest s-th components of the individual decisions d1, d2, …, dm. The best variant of the thermochemical treatment was recognised as corresponding to the largest component of the optimal lining-up, which in our case is the diffusion boronizing.

A Method for Shaping the Dynamic Characteristics of Vibration Isolation Systems

2013 ◽  
Vol 198 ◽  
pp. 615-620
Author(s):  
Igor Maciejewski
Keyword(s):  
Dynamic Characteristics ◽  
Nonlinear Dynamic ◽  
Vibration Isolation ◽  
Dynamic Behaviour ◽  
Pareto Optimal ◽  
System Configuration ◽  
Isolation Systems ◽  
Optimisation Procedure ◽  
System Characteristics ◽  
Selection Of

In this paper a method for shaping the dynamic characteristics of vibration isolation systems is presented. The multi-criteria optimisation procedure is utilized in order to find the Pareto-optimal system configuration with simultaneous minimization of conflicted optimisation criteria: the isolated body acceleration and suspension travel. As an example of the proposed method, the seat with a pneuma-hydraulic suspension is investigated and its vibro-isolation properties are shaped by an appropriate selection of the system characteristics. The basic findings of the paper consist in the optimisation procedure that takes into account the nonlinear dynamic behaviour of vibration isolation systems.

Cognitive gadgets and cognitive priors

2019 ◽  
Vol 42 ◽  
Author(s):  
Gian Domenico Iannetti ◽  
Giorgio Vallortigara
Keyword(s):  
Cognitive Neuroscience ◽  
Selection Of

Abstract Some of the foundations of Heyes’ radical reasoning seem to be based on a fractional selection of available evidence. Using an ethological perspective, we argue against Heyes’ rapid dismissal of innate cognitive instincts. Heyes’ use of fMRI studies of literacy to claim that culture assembles pieces of mental technology seems an example of incorrect reverse inferences and overlap theories pervasive in cognitive neuroscience.

Note on Selection of Coordinate Systems for Geodynamics

1975 ◽  
Vol 26 ◽  
pp. 395-407
Author(s):  
S. Henriksen
Keyword(s):  
Sea Level ◽  
The Other ◽  
Coordinate Systems ◽  
Mean Sea Level ◽  
The Earth ◽  
The One ◽  
Static Systems ◽  
Selection Of

The first question to be answered, in seeking coordinate systems for geodynamics, is: what is geodynamics? The answer is, of course, that geodynamics is that part of geophysics which is concerned with movements of the Earth, as opposed to geostatics which is the physics of the stationary Earth. But as far as we know, there is no stationary Earth – epur sic monere. So geodynamics is actually coextensive with geophysics, and coordinate systems suitable for the one should be suitable for the other. At the present time, there are not many coordinate systems, if any, that can be identified with a static Earth. Certainly the only coordinate of aeronomic (atmospheric) interest is the height, and this is usually either as geodynamic height or as pressure. In oceanology, the most important coordinate is depth, and this, like heights in the atmosphere, is expressed as metric depth from mean sea level, as geodynamic depth, or as pressure. Only for the earth do we find “static” systems in use, ana even here there is real question as to whether the systems are dynamic or static. So it would seem that our answer to the question, of what kind, of coordinate systems are we seeking, must be that we are looking for the same systems as are used in geophysics, and these systems are dynamic in nature already – that is, their definition involvestime.

Measurements of the Cape Astrometric Survey of the Southern Hemisphere

1978 ◽  
Vol 48 ◽  
pp. 515-521
Author(s):  
W. Nicholson
Keyword(s):  
Southern Hemisphere ◽  
Automatic Measuring ◽  
Measuring Machine ◽  
Final Selection ◽  
Selection Of

SummaryA routine has been developed for the processing of the 5820 plates of the survey. The plates are measured on the automatic measuring machine, GALAXY, and the measures are subsequently processed by computer, to edit and then refer them to the SAO catalogue. A start has been made on measuring the plates, but the final selection of stars to be made is still a matter for discussion.

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