CFD Challenge: Application of the Commercial Finite Element Solver FIDAP in a Clinical Setting

2012 ◽  
Author(s):  
Merih Cibis ◽  
Jolanda J. Wentzel ◽  
Frank J. H. Gijsen
Keyword(s):  
Finite Element ◽  
Shear Stress ◽  
Carotid Arteries ◽  
Time Frame ◽  
Academic Hospital ◽  
Close Collaboration ◽  
Desktop Computer ◽  
Reasonable Time ◽  
Finite Element Software ◽  
Reasonable Time Frame

The Rotterdam group mainly focuses on the influence of shear stress on plaque localization and progression in human coronary and carotid arteries. Since we are in an academic hospital, we always have been working in close collaboration with cardiologists and radiologists. Since clinicians do not have the time or the sources that academic engineering groups have, we limited ourselves to perform the simulations on a standard desktop computer (Intel Xeon six core processor, 2.40 GHz CPU and 12 GB RAM) using commercial finite element software (FIDAP 8.7.4 with GAMBIT 2.4.6) within a reasonable time-frame (the weekend). The simulations were carried out by our PhD student Merih Cibis.

scholarly journals Reasonable time frame in bankruptcy proceedings: Analysis of cases from the judicial practice of the Commercial Court in Niš

2021 ◽  
Vol 60 (90) ◽  
pp. 97-118
Author(s):  
Aleksandar Mojašević ◽  
Aleksandar Jovanović
Keyword(s):  
Case Law ◽  
Time Frame ◽  
Fair Trial ◽  
Fundamental Rights ◽  
Reasonable Time ◽  
Judicial Practice ◽  
Reasonable Time Frame ◽  
The Subject ◽  
The Republic ◽  
The Right

The Act on the Protection of the Right to a Trial within a Reasonable Time, which took effect in 2016, has created the conditions in our legal system for the protection of the right to a trial within a reasonable time, as one of the fundamental rights guaranteed by the Constitution of the Republic of Serbia and related international documents. Although the legislator does not explicitly provide for the application of this Act in the context of bankruptcy proceedings, it has been used in judicial practice as a mean for the bankruptcy creditors to obtain just satisfaction in cases involving lengthy bankruptcy proceedings and a violation of the right to a fair trial within a reasonable time. The subject matter of analysis in this paper is the right to a trial within a reasonable time in bankruptcy cases. For that purpose, the authors examine the case law of the Commercial Court in Niš in the period from the beginning of 2016 to the end of 2019, particularly focusing on the bankruptcy cases in which complaints (objections) were filed for the protection of the right to a fair trial within a reasonable time. The aim of the research is to examine whether the objection, as an initial act, is a suitable instrument for increasing the efficiency of the bankruptcy proceeding, or whether it only serves to satisfy the interests of creditors. The authors have also examined whether this remedy affects the overall costs and duration of the bankruptcy proceeding. The main finding is that there is an increasing number of objections in the Commercial Court in Niš, which still does not affect the length and costs of bankruptcy. This trend is not only the result of inactivity of the court and the complexity of certain cases but also of numerous external factors, the most prominent of which is the work of some state bodies.

Enough Talk, It's Time to Transform: A Call for Editorial Leadership for a Robust Science

2018 ◽  
Vol 11 (1) ◽  
pp. 43-48 ◽  
Author(s):  
Sven Kepes ◽  
Sheila K. List ◽  
Michael A. McDaniel
Keyword(s):  
Decision Making ◽  
Time Frame ◽  
Potential Effect ◽  
Scientific Discipline ◽  
Decision Making Process ◽  
Bottom Up ◽  
Detailed Review ◽  
Reasonable Time ◽  
Reasonable Time Frame

The focal article (Grand et al., 2018) addresses one of the most important issues across virtually all areas of science (Goldstein, 2010): the trustworthiness and credibility of a scientific discipline. Once these attributes are lost, it is difficult to regain them within a reasonable time frame, if ever. In contrast to previous articles on this topic (e.g., Kepes & McDaniel, 2013), the authors of the focal article provide a detailed review of the stakeholders surrounding industrial and organizational (I-O) psychology, including their potential effect on the robustness and trustworthiness of our scientific discipline. In essence, the focal article describes I-O psychology's ecosystem responsible for fostering robust and credible science. The authors should be commended for their comprehensive undertaking, and we have no substantive disagreements. However, implicitly, as with most articles on this vital topic, the focal article tends to take a bottom-up approach to decision making and change. The bottom-up approach is an emergent process where the individuals involved in the day-to-day activities are primarily responsible for the decision-making process and resulting change (Kindler, 1979). Thus, changes resulting from this process are incremental and typically involve making minor adjustments to existing processes (Bartunek & Moch, 1987).

Destruction of model organic pollutants in water using ozone, UV and their combination (Part I)

2003 ◽  
Vol 47 (1) ◽  
pp. 191-196 ◽  
Author(s):  
K.C. Teo ◽  
C. Yang ◽  
R.J. Xie ◽  
N.K. Goh ◽  
L.S. Chia
Keyword(s):  
Phenolic Compounds ◽  
Organic Carbon ◽  
Organic Pollutants ◽  
Effective Means ◽  
Time Frame ◽  
Model Compounds ◽  
Reasonable Time ◽  
Reasonable Time Frame ◽  
Aqueous Matrices ◽  
Removal Efficiencies

The experimental results showed that ozone (O3) oxidation is an effective means to destroy phenolic organic pollutants present in water. High removal efficiencies can be readily achieved for most of the model compounds fortified in aqueous matrices within a reasonable time frame. This study also included the oxidation of phenolic compounds using ozone in combination with ultraviolet (UV) irradiation. The extent of mineralization measured in terms of the losses in total organic carbon is promoted by the joint action of ozone and UV in comparison with using ozone alone.

scholarly journals Peptide Pattern Recognition for high-throughput protein sequence analysis and clustering

2017 ◽  
Author(s):  
Peter Kamp Busk
Keyword(s):  
Pattern Recognition ◽  
Protein Sequence ◽  
Time Frame ◽  
Protein Sequence Analysis ◽  
Large Protein ◽  
Desktop Computer ◽  
Peptide Pattern ◽  
Large Numbers ◽  
Reasonable Time Frame ◽  
Peptide Pattern Recognition

AbstractLarge collections of protein sequences with divergent sequences are tedious to analyze for understanding their phylogenetic or structure-function relation. Peptide Pattern Recognition is an algorithm that was developed to facilitate this task but the previous version does only allow a limited number of sequences as input.I implemented Peptide Pattern Recognition as a multithread software designed to handle large numbers of sequences and perform analysis in a reasonable time frame. Benchmarking showed that the new implementation of Peptide Pattern Recognition is twenty times faster than the previous implementation on a small protein collection with 673 MAP kinase sequences. In addition, the new implementation could analyze a large protein collection with 48,570 Glycosyl Transferase family 20 sequences without reaching its upper limit on a desktop computer.Peptide Pattern Recognition is a useful software for providing comprehensive groups of related sequences from large protein sequence collections.

The Different Pavement Structure Combination Shear Stress Analyze

2014 ◽  
Vol 587-589 ◽  
pp. 990-995
Author(s):  
Jian Hong Gao
Keyword(s):  
System Theory ◽  
Finite Element ◽  
Shear Stress ◽  
Elastic System ◽  
Finite Element Software ◽  
Load Change ◽  
Maximal Shear Stress ◽  
Pavement Structure ◽  
Structure Layer

Based on the multi-layer elastic system theory, large general used finite element software is used to analysis in the paper. The pavement structure layer bottom three-direction maximal shear stress SXY, SYZ and SXZ are computed under the different axis load for four kind combinations. Through contrasting the three direction shear stress, the paper obtained some curves and laws about the pavement structure layer bottom three-direction shear stress along with the axis load change.

Application of Dynamic-Static Drainage Consolidation Method on a Silty Ground of Guangzhou

2011 ◽  
Vol 403-408 ◽  
pp. 1405-1408 ◽  
Author(s):  
Li Juan Zhang ◽  
Zhang Ming Li
Keyword(s):  
Pore Water Pressure ◽  
Water Pressure ◽  
Time Frame ◽  
Dynamic Compaction ◽  
Residual Effects ◽  
Soft Ground ◽  
Reasonable Time ◽  
Reasonable Time Frame ◽  
Load Tests ◽  
Compaction Method

The treatment of a silty ground for petroleum product storage facilities in Guangzhou with dynamic-static drainage consolidation method which is based on based on combining the dynamic compaction method and the static consolidation is presented. The pore water pressure, settlement, field vane shear strength, bearing capacity through plate load tests have clearly shown that this method can significantly strengthen the silt ground within reasonable time frame. The soft ground has been improved under the dynamic and static forces and their residual effects.

scholarly journals FORECASTING, VALUATION AND PORTFOLIO RETURNS OF STOCK MARKET EVOLUTION: PROBLEMS, PARADOXES AND EFFICIENT INFORMATION. WORLDWIDE IMPLICATIONS AND ROMANIAN EVIDENCE

2019 ◽  
Vol 21 (1) ◽  
pp. 87-114
Author(s):  
Florin Turcaș ◽  
Florin Cornel Dumiter ◽  
Petre Brezeanu ◽  
Marius Boiță
Keyword(s):  
Stock Market ◽  
Time Frame ◽  
Market Evolution ◽  
Reasonable Time ◽  
Empirical Results ◽  
Portfolio Returns ◽  
Eclectic Approach ◽  
Reasonable Time Frame ◽  
Efficient Information ◽  
Portfolio Return

The purpose of this paper is to make a quantitative and qualitative critical analyse regarding the three important aspects of stock market evolution. First, the forecasting problems are presented and analyse in order to establish the main problems and the potential solutions. Second, the valuation problems are tackled in order to observe different trends and directions of solving these issues. Third, the portfolio return forecasts are mandatory in order to establish the results of the titles/market evolutions. The methods used in this research reveal the importance of adopting some important econometric tools in order to test the robustness of different main theories of the stock market and some important practices used among investors. The scope of the research was to give a quid pro quo in order to confer potential solutions regarding problems, paradoxes and efficient information of the stock market. The empirical results reveal that besides the critical side of the theories this paper sets a basis for a new eclectic approach regarding the probabilities that a title achieves certain values within a reasonable time frame. The main conclusion of this article suggests’ that the current theories register some gaps regarding the adherence into stock markets’ realities.

Analysis on the Effects of Goodman Contact Model's Parameters to the Shear Stress

2013 ◽  
Vol 405-408 ◽  
pp. 406-410
Author(s):  
Jian Rong Xue ◽  
Ling Hui Dai ◽  
Ying Ying Zhang
Keyword(s):  
Finite Element ◽  
Shear Stress ◽  
Contact Model ◽  
Direct Shear ◽  
Nonlinear Characteristic ◽  
Shear Tests ◽  
Second Development ◽  
Direct Shear Tests ◽  
Finite Element Software ◽  
Contact Parameters

In this paper, the Goodman element contact model is programmed on the second-development calculation platform offered by finite element software. Computation and analysis have been done so as to obtain the effect of contact parameters to the shear stress. The results show that, the subroutine can reflect the model’s nonlinear characteristic well. The order of the effects of parameters to shear stress is: φ>Rf >K>n; and when Rf increases, the shear stress decreases. These results can offer reference to direct shear tests to obtain the contact parameters.

Efficient Visualization Strategies for Large-Scale Finite Element Models

2018 ◽  
Vol 18 (1) ◽  
Author(s):  
Xu Liangyin ◽  
Li Yunpeng ◽  
Zhang Sheng ◽  
Chen Biaosong
Keyword(s):  
Finite Element ◽  
Large Scale ◽  
Finite Element Models ◽  
Processing Unit ◽  
Desktop Computer ◽  
Extraction Technology ◽  
Surface Extraction ◽  
Finite Element Software ◽  
Large Scale Data ◽  
Scale Data

In this paper, an effective strategy is proposed to realize the smooth visualization of large-scale finite element models on a desktop computer. Based on multicore parallel and graphics processing unit (GPU) computing techniques, the large-scale data of a finite element model and the corresponding graphics data can be handled and rendered effectively. The proposed strategies mainly consist of four parts. First, a parallel surface extraction technology based on the dual connections of elements and nodes is developed to reduce the graphics data. Second, the OpenGL vertex buffer object (VBO) technology is used to improve the rendering efficiency after surface extraction. Third, the element-hiding and cut-surface functions are implemented to facilitate the observation of the interior of the meshes. Finally, the stream/filter architecture, which has the advantages of efficient computation and communication, is introduced to meet the needs of large-scale data processing and various visualization methods. These strategies are developed on the general visualization system SiPESC.Post. Using these strategies, SiPESC.Post implements high-performance display and real-time operation for large-scale finite element models, especially for models containing millions or tens of millions of elements. To demonstrate the superiority and feasibility of the presented strategies, large-scale numerical examples are presented, and the strategies are compared with several commercial finite element software systems and open-source visual postprocessing packages in terms of visualization efficiency.

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