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Статті в журналах з теми "Inverse procedural modeling"

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Автор: Grafiati

Опубліковано: 7 липня 2024

Оновлено: 7 липня 2024

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1

Wu, Fuzhang, Dong-Ming Yan, Weiming Dong, Xiaopeng Zhang, and Peter Wonka. "Inverse procedural modeling of facade layouts." ACM Transactions on Graphics 33, no. 4 (July 27, 2014): 1–10. http://dx.doi.org/10.1145/2601097.2601162.

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2

Hu, Yiwei, Chengan He, Valentin Deschaintre, Julie Dorsey, and Holly Rushmeier. "An Inverse Procedural Modeling Pipeline for SVBRDF Maps." ACM Transactions on Graphics 41, no. 2 (April 30, 2022): 1–17. http://dx.doi.org/10.1145/3502431.

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Procedural modeling is now the de facto standard of material modeling in industry. Procedural models can be edited and are easily extended, unlike pixel-based representations of captured materials. In this article, we present a semi-automatic pipeline for general material proceduralization. Given Spatially Varying Bidirectional Reflectance Distribution Functions (SVBRDFs) represented as sets of pixel maps, our pipeline decomposes them into a tree of sub-materials whose spatial distributions are encoded by their associated mask maps. This semi-automatic decomposition of material maps progresses hierarchically, driven by our new spectrum-aware material matting and instance-based decomposition methods. Each decomposed sub-material is proceduralized by a novel multi-layer noise model to capture local variations at different scales. Spatial distributions of these sub-materials are modeled either by a by-example inverse synthesis method recovering Point Process Texture Basis Functions (PPTBF) [ 30 ] or via random sampling. To reconstruct procedural material maps, we propose a differentiable rendering-based optimization that recomposes all generated procedures together to maximize the similarity between our procedural models and the input material pixel maps. We evaluate our pipeline on a variety of synthetic and real materials. We demonstrate our method’s capacity to process a wide range of material types, eliminating the need for artist designed material graphs required in previous work [ 38 , 53 ]. As fully procedural models, our results expand to arbitrary resolution and enable high-level user control of appearance.

3

Garifullin, Albert, Nikolay Maiorov, Vladimir Frolov, and Alexey Voloboy. "Single-View 3D Reconstruction via Differentiable Rendering and Inverse Procedural Modeling." Symmetry 16, no. 2 (February 4, 2024): 184. http://dx.doi.org/10.3390/sym16020184.

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Three-dimensional models, reconstructed from real-life objects, are extensively used in virtual and mixed reality technologies. In this paper we propose an approach to 3D model reconstruction via inverse procedural modeling and describe two variants of this approach. The first option is to fit a set of input parameters using a genetic algorithm. The second option allows us to significantly improve precision by using gradients within the memetic algorithm, differentiable rendering, and differentiable procedural generators. We demonstrate the results of our work on different models, including trees, which are complex objects that most existing methods cannot reconstruct. In our work, we see two main contributions. First, we propose a method to join differentiable rendering and inverse procedural modeling. This gives us the ability to reconstruct 3D models more accurately than existing approaches when few input images are available, even for a single image. Second, we combine both differentiable and non-differentiable procedural generators into a single framework that allows us to apply inverse procedural modeling to fairly complex generators. We show that both variants of our approach can be useful: the differentiable one is more precise but puts limitations on the procedural generator, while the one based on genetic algorithms can be used with any existing generator. The proposed approach uses information about the symmetry and structure of the object to achieve high-quality reconstruction from a single image.

4

Hu, Yiwei, Julie Dorsey, and Holly Rushmeier. "A novel framework for inverse procedural texture modeling." ACM Transactions on Graphics 38, no. 6 (November 8, 2019): 1–14. http://dx.doi.org/10.1145/3355089.3356516.

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5

Št'ava, O., B. Beneš, R. Měch, D. G. Aliaga, and P. Krištof. "Inverse Procedural Modeling by Automatic Generation of L-systems." Computer Graphics Forum 29, no. 2 (May 2010): 665–74. http://dx.doi.org/10.1111/j.1467-8659.2009.01636.x.

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6

Bokeloh, Martin, Michael Wand, and Hans-Peter Seidel. "A connection between partial symmetry and inverse procedural modeling." ACM Transactions on Graphics 29, no. 4 (July 26, 2010): 1–10. http://dx.doi.org/10.1145/1778765.1778841.

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7

Guo, Jianwei, Haiyong Jiang, Bedrich Benes, Oliver Deussen, Xiaopeng Zhang, Dani Lischinski, and Hui Huang. "Inverse Procedural Modeling of Branching Structures by Inferring L-Systems." ACM Transactions on Graphics 39, no. 5 (September 4, 2020): 1–13. http://dx.doi.org/10.1145/3394105.

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8

Petrenko, Olga, Mateu Sbert, Olivier Terraz, and Djamchid Ghazanfarpour. "Modeling of Flowers with Inverse Grammar Generation Interface." International Journal of Creative Interfaces and Computer Graphics 3, no. 2 (July 2012): 23–41. http://dx.doi.org/10.4018/jcicg.2012070103.

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Flowers belong to one of the natural phenomena that cannot be captured completely, as there is enormous variety of shapes both within and between individuals. The authors propose a procedural modeling of flowering plants using an extension of L-Systems – a model based on three-dimensional generalized maps. Conventionally, in order to build a model the user has to write the grammar, which consists of the description of 3Gmaps and all the production rules. The process of writing a grammar is usually quite laborious and tedious. In order to avoid this the authors propose new interface functionality: the inverse modeling by automatic generation of L-systems. The user describes the flower he wants to model, by assigning the properties of its organs. The algorithm uses this information as an input, which is then analyzed and coded as L-systems grammar.

9

Aliaga, Daniel G. "3D Design and Modeling of Smart Cities from a Computer Graphics Perspective." ISRN Computer Graphics 2012 (December 6, 2012): 1–19. http://dx.doi.org/10.5402/2012/728913.

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Modeling cities, and urban spaces in general, is a daring task for computer graphics, computer vision, and visualization. Understanding, describing, and modeling the geometry and behavior of cities are significant challenges that ultimately benefit urban planning and simulation, mapping and visualization, emergency response, and entertainment. In this paper, we have collected and organized research which addresses this multidisciplinary challenge. In particular, we divide research in modeling cities and urban spaces into the areas of geometrical modeling and of behavioral modeling. The first area overlaps significantly with computer graphics and computer vision—our focus is on algorithms that produce intricate geometry quickly from a compact set of specifications (i.e., procedural modeling). The second area of behavioral modeling centers on understanding the underlying socioeconomic, meteorological, and resource consumption/waste production processes occurring within an urban space. Research in urban modeling, even from a computer graphics perspective, must tie the two areas of geometric and behavioral modeling together in order to ensure that useful 3D modeling techniques are developed and are placed within their needed context. In addition, we discuss the growing trend of inverse procedural modeling and some sample urban applications.

10

G, Baranov, Komisarenko O, Parohnenko L, and Voydenko O. "AXIOLOGICAL FUNDAMENTALS OF SCIENTIFIC AND METHODOLOGICAL APPARATUS FOR INFORMATION AND CONTROL MEANS OF INTELLECTUAL VEHICLES." National Transport University Bulletin 1, no. 51 (2022): 28–37. http://dx.doi.org/10.33744/2308-6645-2022-1-51-028-037.

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Ukraine, together with the world's leading countries, is actively promoting the development of intelligent transport systems (ITS). Target cycles are aimed at future forecast states, which are provided by the relevant strategic plans and programs for 2030-2050. Targeted resource-efficient satisfaction of society's needs in the form of expected services, products, goods according to new complex regulations, products, standards, safety criteria, functional stability, survivability, ecological economy is impossible without significant updating of technical and technological solutions (TTP). The interaction of sets of objects of complex dynamic systems (SDS) with heterogeneous contacts of the Air Force determines the desired paradigm of duality of direct and inverse, causal relations. Within the framework of complex dynamic systems (SDS) in advance, qualitatively complete, locally accurate modeling rules assess in advance their own actions and influences of factors of the interacting natural environment (APS). It is the predicative form of theoretical results and evidence on the facts of practice that determines the axiological basis of science. Known logical descriptions are immutable and decisive <if there is a specific fixed form of pair interaction of the Air Force → VTS, as a cause, then, as a consequence in these specific conditions, we have an accurate conclusion>. Similar facts of existence of the corresponding limited procedural result, effect of TTR, a condition of VDS and VPS are possible. For every constant, stationary, similar situation, a double, inverse statement is also valid. It is accurate based on multiple confirmations of the practice of scientific observations and comparisons in various fields of human activity. The article is devoted to the development of technologies for modeling integration processes that synergistically affect the level of road safety of vehicles under conditions of risk and uncertainty of nonstationary environmental factors. The mathematical description of the problem area and information space of interaction of the Air Force participants → VTS is formalized. The essence, peculiarity and specificity of situational modes of dynamic, continuous interaction in space-time discrete cells of the electronic map of the critical zone are substantiated on the basis of the frequency of previous accidents that are possible in the future.

11

Stava, O., S. Pirk, J. Kratt, B. Chen, R. Měch, O. Deussen, and B. Benes. "Inverse Procedural Modelling of Trees." Computer Graphics Forum 33, no. 6 (March 20, 2014): 118–31. http://dx.doi.org/10.1111/cgf.12282.

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12

Sharma, Jyoti, and Rajib Lochan Dhar. "Factors influencing job performance of nursing staff." Personnel Review 45, no. 1 (February 1, 2016): 161–82. http://dx.doi.org/10.1108/pr-01-2014-0007.

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Purpose – The purpose of this paper is to examine the factors that influence the affective commitment of nursing staff and its subsequent impact on their job performance. Design/methodology/approach – A survey-based study was performed among 349 nursing staff working in Uttarakhand, randomly selected from six public healthcare institutes, using a well-established questionnaire. Structural equation modeling was applied to study the mediating effect of affective commitment and its correlation with the constructs used in research. Findings – The findings of the study revealed that the level of burnout is significantly higher among the nursing staff and had an inverse relation with affective commitment. Further, perceived organizational support and procedural justice showed a positive relation with affective commitment in contrast to burnout. Moreover, affective commitment had a strong impact on job performance of the nursing staff, indicated by direct relation with a value of 0.70. Research limitations/implications – The findings contribute by recognizing the various factors affecting the performance of nursing staff specifically in developing country like India. Limited in geographical area, industry and a self-rated questionnaire are some of the limitations of the present study. Practical implications – To conclude, this study revealed the vital significance of factors affecting the job performance of nursing staff through affective commitment. Based on the findings, healthcare institutions need to reduce the level of burnout, create and enhance a supportive and fair working environment to enhance the level of affective commitment and consequently the job performance of the nursing staff. Originality/value – This study has extended the existing literature by identifying the mediating role of affective commitment on factors affecting job performance of nursing staff specifically in the Indian context.

13

Chen, Chin Chun. "Construct Concept Structure for Fundamental Mathematics." Applied Mechanics and Materials 145 (December 2011): 436–40. http://dx.doi.org/10.4028/www.scientific.net/amm.145.436.

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Currently, cognitive psychologists and mathematics educators are looking again at conceptual and procedural knowledge in mathematics learning. Building relationship between conceptual knowledge and the procedures of mathematics contributes to long-term memory of procedures and to their effective use. So we know that symbols could enhance concept and procedures apply concepts to solve problem efficiently. Sketch the graph of exponential function and logarithmic function. Find the inverse exponential function, logarithmic function and so on. The lack of other concrete example in general exponential and logarithmic function prevented the development of application about general exponential and logarithm. Numerical fundamental mathematic problems are provided with complicated number frequently. The lack of other concrete example in general exponential and logarithmic function prevented the development of application about general exponential and logarithm. Numerical fundamental mathematic problems are provided with complicated number frequently The conceptual knowledge, not mechanical algorithms, need more study and thought to identify. But there is a limitation for students use some materials to clarify complicated mathematic concepts perfectly. In order to insight the misconception of learning fundamental mathematics and progress teaching. The purpose of this study is to provide an integrated method of fuzzy theory basis for individualized concept structure analysis. This method integrates Fuzzy Logic Model of Perception (FLMP) and Interpretive Structural Modeling (ISM). The combined algorithm could analyze individualized concepts structure based on the comparisons with concept structure of expert. Applying the method of the cluster of fuzzy c-mean, we could distinguish characteristics of six groups. We analysis the whole data and discuss the relationship between knowledge structures of the sample. The result and discoveries from the research can offer pupils' misconception of learning fundamental mathematics with reference of diagnosis.

14

Mei, Han, Lihui Lang, Kangning Liu, and Xiaoguang Yang. "Evaluation Study on Iterative Inverse Modeling Procedure for Determining Post-Necking Hardening Behavior of Sheet Metal at Elevated Temperature." Metals 8, no. 12 (December 10, 2018): 1044. http://dx.doi.org/10.3390/met8121044.

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The identification of the post-necking strain hardening behavior of metal sheet is important for finite element analysis procedures of sheet metal forming process. The inverse modeling method is a practical way to determine the hardening curve to large strains. This study is thus focused on the evaluation of the inverse modeling method using a novel material performance test. In this article, hot uniaxial tensile test of a commercially pure titanium sheet with rectangular section was first conducted. Utilizing the raw data from the tensile test, the post-necking hardening behavior of the material is determined by a FE-based inverse modeling procedure. Then the inverse method is compared with some classical hardening models. In order to further evaluate the applicability of the inverse method, biaxial tensile test at elevated temperatures was performed using a special designed cruciform specimen. The cruciform specimen could guarantee that the maximum equi-biaxial deformation occurs in the center section. By using the inverse modeling procedure, the hardening curves under biaxial stress state are able to be extracted. Finally the stress-strain curves obtained from the two experiments are compared and analysis studies are provided.

15

Alipouri, Yousef, and Javad Poshtan. "Non-affine minimum variance controller design by inverse modeling procedure." Nonlinear Dynamics 78, no. 4 (August 9, 2014): 2675–84. http://dx.doi.org/10.1007/s11071-014-1617-5.

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16

Tupper, Haley I., Brian L. Lawson, Patricia Kipnis, Ashish R. Patel, Simon K. Ashiku, Nareg H. Roubinian, Laura C. Myers, Vincent X. Liu, and Jeffrey B. Velotta. "Video-Assisted vs Robotic-Assisted Lung Lobectomies for Operating Room Resource Utilization and Patient Outcomes." JAMA Network Open 7, no. 5 (May 3, 2024): e248881. http://dx.doi.org/10.1001/jamanetworkopen.2024.8881.

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ImportanceWith increased use of robots, there is an inadequate understanding of minimally invasive modalities’ time costs. This study evaluates the operative durations of robotic-assisted vs video-assisted lung lobectomies.ObjectiveTo compare resource utilization, specifically operative time, between video-assisted and robotic-assisted thoracoscopic lung lobectomies.Design, Setting, and ParticipantsThis retrospective cohort study evaluated patients aged 18 to 90 years who underwent minimally invasive (robotic-assisted or video-assisted) lung lobectomy from January 1, 2020, to December 31, 2022, with 90 days’ follow-up after surgery. The study included multicenter electronic health record data from 21 hospitals within an integrated health care system in Northern California. Thoracic surgery was regionalized to 4 centers with 14 board-certified general thoracic surgeons.ExposuresRobotic-assisted or video-assisted lung lobectomy.Main Outcomes and MeasuresThe primary outcome was operative duration (cut to close) in minutes. Secondary outcomes were length of stay, 30-day readmission, and 90-day mortality. Comparisons between video-assisted and robotic-assisted lobectomies were generated using the Wilcoxon rank sum test for continuous variables and the χ2 test for categorical variables. The average treatment effects were estimated with augmented inverse probability treatment weighting (AIPTW). Patient and surgeon covariates were adjusted for and included patient demographics, comorbidities, and case complexity (age, sex, race and ethnicity, neighborhood deprivation index, body mass index, Charlson Comorbidity Index score, nonelective hospitalizations, emergency department visits, a validated laboratory derangement score, a validated institutional comorbidity score, a surgeon-designated complexity indicator, and a procedural code count), and a primary surgeon-specific indicator.ResultsThe study included 1088 patients (median age, 70.1 years [IQR, 63.3-75.8 years]; 704 [64.7%] female), of whom 446 (41.0%) underwent robotic-assisted and 642 (59.0%) underwent video-assisted lobectomy. The median unadjusted operative duration was 172.0 minutes (IQR, 128.0-226.0 minutes). After AIPTW, there was less than a 10% difference in all covariates between groups, and operative duration was a median 20.6 minutes (95% CI, 12.9-28.2 minutes; P &lt; .001) longer for robotic-assisted compared with video-assisted lobectomies. There was no difference in adjusted secondary patient outcomes, specifically for length of stay (0.3 days; 95% CI, −0.3 to 0.8 days; P = .11) or risk of 30-day readmission (adjusted odds ratio, 1.29; 95% CI, 0.84-1.98; P = .13). The unadjusted 90-day mortality rate (1.3% [n = 14]) was too low for the AIPTW modeling process.Conclusions and RelevanceIn this cohort study, there was no difference in patient outcomes between modalities, but operative duration was longer in robotic-assisted compared with video-assisted lung lobectomy. Given that this elevated operative duration is additive when applied systematically, increased consideration of appropriate patient selection for robotic-assisted lung lobectomy is needed to improve resource utilization.

17

Hu, Han, Xinrong Liang, Yulin Ding, Xuekun Yuan, Qisen Shang, Bo Xu, Xuming Ge, Min Chen, Ruofei Zhong, and Qing Zhu. "Semi-supervised adversarial recognition of refined window structures for inverse procedural façade modelling." ISPRS Journal of Photogrammetry and Remote Sensing 192 (October 2022): 215–31. http://dx.doi.org/10.1016/j.isprsjprs.2022.08.014.

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18

Christensen, Niels B., and Rasmus J. Tølbøll. "A lateral model parameter correlation procedure for one-dimensional inverse modelling." Geophysical Prospecting 57, no. 5 (September 2009): 919–29. http://dx.doi.org/10.1111/j.1365-2478.2008.00756.x.

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19

Frey, Daniel D., Kevin N. Otto, and Stan Taketani. "Manufacturing Block Diagrams and Optimal Adjustment Procedures." Journal of Manufacturing Science and Engineering 123, no. 1 (October 1, 1999): 119–27. http://dx.doi.org/10.1115/1.1310329.

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This paper introduces a technique for modeling manufacturing systems using block diagrams. The blocks represent linear transformations of dimensionless noise vectors to normalized quality characteristic vectors. These block diagrams are used to model on-line adjustment procedures using generalized inverses. This adjustment strategy is shown to guarantee minimum quality loss as defined by Taguchi if the required adjustments have no active constraints, and is effective for coupled linear systems. The surface mount of large body packages serves as an example of the modeling techniques. Block diagrams of the surface mount process are developed for a production system incorporating on-line adjustments and for the same system without adjustments. Data from preproduction runs support the model’s predictions of bias, variance, and yield.

20

Jiménez, R. D., L. C. Santos, N. M. Kuhl, J. C. Egaña, and R. L. Soto. "An inverse eigenvalue procedure for damage detection in rods." Computers & Mathematics with Applications 47, no. 4-5 (February 2004): 643–57. http://dx.doi.org/10.1016/s0898-1221(04)90052-1.

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21

OLSEN, KIM BAK. "A STABLE AND FLEXIBLE PROCEDURE FOR THE INVERSE MODELLING OF SEISMIC FIRST ARRIVALS1." Geophysical Prospecting 37, no. 5 (July 1989): 455–65. http://dx.doi.org/10.1111/j.1365-2478.1989.tb02217.x.

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22

Cho, Hokwon A. "Inverse-Type Sampling Procedure for Estimating the Number of Multinomial Classes." Sequential Analysis 22, no. 4 (December 31, 2003): 307–24. http://dx.doi.org/10.1081/sqa-120026886.

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23

Chen, Pinyuen. "Closed inverse sampling procedure for selecting the largest multinomial cell probability." Communications in Statistics - Simulation and Computation 17, no. 3 (January 1988): 969–94. http://dx.doi.org/10.1080/03610918808812707.

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24

Saey, Timothy, Philippe De Smedt, Samuël Delefortrie, Ellen Van De Vijver, and Marc Van Meirvenne. "Comparing one- and two-dimensional EMI conductivity inverse modeling procedures for characterizing a two-layered soil." Geoderma 241-242 (March 2015): 12–23. http://dx.doi.org/10.1016/j.geoderma.2014.10.020.

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25

Hehnen, Tristan, Lukas Arnold, and Saverio La Mendola. "Numerical Fire Spread Simulation Based on Material Pyrolysis—An Application to the CHRISTIFIRE Phase 1 Horizontal Cable Tray Tests." Fire 3, no. 3 (July 24, 2020): 33. http://dx.doi.org/10.3390/fire3030033.

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A general procedure is described to generate material parameter sets to simulate fire propagation in horizontal cable tray installations. Cone Calorimeter test data are processed in an inverse modelling approach. Here, parameter sets are generated procedurally and serve as input for simulations conducted with the Fire Dynamics Simulator (FDS). The simulation responses are compared with the experimental data and ranked based on their fitness. The best fitness was found for a test condition of 50 kW/m2. Low flux conditions 25 kW/m2 and less exhibited difficulties to be accurately simulated. As a validation step, the best parameter sets are then utilised to simulate fire propagation within a horizontal cable tray installation and are compared with experimental data. It is important to note, the inverse modelling process is focused on the Cone Calorimeter and not aware of the actual validation step. Despite this handicap, the general features in the fire development can be reproduced, however not exact. The fire in the tray simulation extinguishes earlier and the total energy release is slightly higher when compared to the experiment. The responses of the material parameter sets are briefly compared with a selection of state of the art procedures.

26

Franchi, Rodolfo, Antonio del Prete, Domenico Umbrello, and Emilia Mariano. "Inverse Analysis Procedure to Determine Flow Stress and Friction Data for Metal Cutting Finite Element Modeling." Key Engineering Materials 651-653 (July 2015): 1345–50. http://dx.doi.org/10.4028/www.scientific.net/kem.651-653.1345.

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This paper describes an automated procedure developed for the identification of Johnson-Cook (JC) law material parameters and Coulomb friction coefficient at the tool-chip interface, in the specific case of metal cutting FE analysis. The procedure has been developed in iSight environment, through the integration between AdvantEdge metal cutting FE code and an appropriately selected optimization algorithm. The identification of JC and friction parameters, in fact, has been performed considering it as an optimization problem, in which the objective function is the numerical/experimental error function minimization (in the specific case, it is related to the forces and temperatures responses). The calibration and validation phases have been performed using forces and temperatures experimental data, collected in orthogonal cutting test on SAF2507 superduplex steel.

27

Verheggen, B., and M. Mozurkewich. "An inverse modeling procedure to determine particle growth and nucleation rates from measured aerosol size distributions." Atmospheric Chemistry and Physics Discussions 6, no. 2 (March 7, 2006): 1679–723. http://dx.doi.org/10.5194/acpd-6-1679-2006.

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Abstract. Classical nucleation theory is unable to explain the ubiquity of nucleation events observed in the atmosphere. This shows a need for an empirical determination of the nucleation rate. Here we present a novel inverse modeling procedure to determine particle nucleation and growth rates based on consecutive measurements of the aerosol size distribution. The particle growth rate is determined by regression analysis of the measured change in the aerosol size distribution over time, taking into account the effects of processes such as coagulation, deposition and/or dilution. This allows the growth rate to be determined with a higher time-resolution than can be deduced from inspecting contour plots (''banana-plots''). Knowing the growth rate as a function of time enables the evaluation of the time of nucleation of measured particles of a certain size. The nucleation rate is then obtained by integrating the particle losses from time of measurement to time of nucleation. The regression analysis can also be used to determine or verify the optimum value of other parameters of interest, such as the wall loss or coagulation rate constants. As an example, the method is applied to smog chamber measurements. This program offers a powerful interpretive tool to study empirical aerosol population dynamics in general, and nucleation and growth in particular.

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Verheggen, B., and M. Mozurkewich. "An inverse modeling procedure to determine particle growth and nucleation rates from measured aerosol size distributions." Atmospheric Chemistry and Physics 6, no. 10 (July 17, 2006): 2927–42. http://dx.doi.org/10.5194/acp-6-2927-2006.

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Abstract. Classical nucleation theory is unable to explain the ubiquity of nucleation events observed in the atmosphere. This shows a need for an empirical determination of the nucleation rate. Here we present a novel inverse modeling procedure to determine particle nucleation and growth rates based on consecutive measurements of the aerosol size distribution. The particle growth rate is determined by regression analysis of the measured change in the aerosol size distribution over time, taking into account the effects of processes such as coagulation, deposition and/or dilution. This allows the growth rate to be determined with a higher time-resolution than can be deduced from inspecting contour plots ("banana-plots''). Knowing the growth rate as a function of time enables the evaluation of the time of nucleation of measured particles of a certain size. The nucleation rate is then obtained by integrating the particle losses from time of measurement to time of nucleation. The regression analysis can also be used to determine or verify the optimum value of other parameters of interest, such as the wall loss or coagulation rate constants. As an example, the method is applied to smog chamber measurements. This program offers a powerful interpretive tool to study empirical aerosol population dynamics in general, and nucleation and growth in particular.

29

Bahrami, Amir, Fateme Aghamir, Mehdi Bahrami, and Habib Khodaverdiloo. "Inverse modeling towards parameter estimation of the nonlinear soil hydraulic functions using developed multistep outflow procedure." Journal of Hydrology 590 (November 2020): 125446. http://dx.doi.org/10.1016/j.jhydrol.2020.125446.

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30

Franchi, Rodolfo, Antonio Del Prete, and Domenico Umbrello. "Inverse analysis procedure to determine flow stress and friction data for finite element modeling of machining." International Journal of Material Forming 10, no. 5 (July 28, 2016): 685–95. http://dx.doi.org/10.1007/s12289-016-1311-x.

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31

Mahon, S. J., and D. J. Skellern. "Procedure for inverse modelling of GaAs/AlGaAs HEMT structures from DC I/V characteristic curves." Electronics Letters 27, no. 1 (January 3, 1991): 81–82. http://dx.doi.org/10.1049/el:19910052.

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Gelin, Jean-Claude, and Omar Ghouati. "An inverse solution procedure for material parameters identification in large plastic deformations." Communications in Numerical Methods in Engineering 12, no. 3 (March 1996): 161–73. http://dx.doi.org/10.1002/(sici)1099-0887(199603)12:3<161::aid-cnm961>3.0.co;2-e.

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Li, Guangyao, Fengxiang Xu, Guangyong Sun, and Qing Li. "Identification of mechanical properties of the weld line by combining 3D digital image correlation with inverse modeling procedure." International Journal of Advanced Manufacturing Technology 74, no. 5-8 (June 14, 2014): 893–905. http://dx.doi.org/10.1007/s00170-014-6034-x.

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34

Septier, François, Patrick Armand, and Christophe Duchenne. "A bayesian inference procedure based on inverse dispersion modelling for source term estimation in built-up environments." Atmospheric Environment 242 (December 2020): 117733. http://dx.doi.org/10.1016/j.atmosenv.2020.117733.

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35

Liu, Jian Tao, and Tian Du. "An Efficient Computational Procedure of Fatigue Crack Growth under Variable Amplitude Loading via XFEM." Advanced Materials Research 538-541 (June 2012): 3012–20. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.3012.

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Modeling of fatigue crack growth (FCG) under variable amplitude (VA) loading has been a topic of intensive research for decades. This paper proposed an efficient numerical simulation procedure of the FCG process under VA loading via extended finite element method (XFEM). The procedure can describe the integrative effect of several factors (specimen thickness, stress ratio, Poisson’s ratio and so on) simultaneously with a general model. In order to improve the computation efficiency, the whole continua domain is divided into two parts by the level set functions and the global stiffness matrix is divided into four parts accordingly. Then, the inverse operation of global stiffness matrix can be calculated rapidly with the LDU decomposition and the equilibrium equation can be solved effectively. Several sets of fatigue test data in 2024-T351 and 7075-T6 aluminum alloys are used to verify the procedure, the predictions are in good agreement with the test data.

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Charkas, Hasan, Hayder Rasheed, and Yacoub Najjar. "Calibrating a J2 plasticity material model using a 2D inverse finite element procedure." International Journal of Solids and Structures 45, no. 5 (March 2008): 1244–63. http://dx.doi.org/10.1016/j.ijsolstr.2007.09.033.

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Chisari, C., L. Macorini, C. Amadio, and B. A. Izzuddin. "An inverse analysis procedure for material parameter identification of mortar joints in unreinforced masonry." Computers & Structures 155 (July 2015): 97–105. http://dx.doi.org/10.1016/j.compstruc.2015.02.008.

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Zhang, Zongliang, Jonathan Li, Xin Li, Yangbin Lin, Shanxin Zhang, and Cheng Wang. "A FAST METHOD FOR MEASURING THE SIMILARITY BETWEEN 3D MODEL AND 3D POINT CLOUD." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B1 (June 6, 2016): 725–28. http://dx.doi.org/10.5194/isprs-archives-xli-b1-725-2016.

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This paper proposes a fast method for measuring the partial Similarity between 3D Model and 3D point Cloud (SimMC). It is crucial to measure SimMC for many point cloud-related applications such as 3D object retrieval and inverse procedural modelling. In our proposed method, the surface area of model and the Distance from Model to point Cloud (DistMC) are exploited as measurements to calculate SimMC. Here, DistMC is defined as the weighted distance of the distances between points sampled from model and point cloud. Similarly, Distance from point Cloud to Model (DistCM) is defined as the average distance of the distances between points in point cloud and model. In order to reduce huge computational burdens brought by calculation of DistCM in some traditional methods, we define SimMC as the ratio of weighted surface area of model to DistMC. Compared to those traditional SimMC measuring methods that are only able to measure global similarity, our method is capable of measuring partial similarity by employing distance-weighted strategy. Moreover, our method is able to be faster than other partial similarity assessment methods. We demonstrate the superiority of our method both on synthetic data and laser scanning data.

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Zhang, Zongliang, Jonathan Li, Xin Li, Yangbin Lin, Shanxin Zhang, and Cheng Wang. "A FAST METHOD FOR MEASURING THE SIMILARITY BETWEEN 3D MODEL AND 3D POINT CLOUD." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B1 (June 6, 2016): 725–28. http://dx.doi.org/10.5194/isprsarchives-xli-b1-725-2016.

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This paper proposes a fast method for measuring the partial Similarity between 3D Model and 3D point Cloud (SimMC). It is crucial to measure SimMC for many point cloud-related applications such as 3D object retrieval and inverse procedural modelling. In our proposed method, the surface area of model and the Distance from Model to point Cloud (DistMC) are exploited as measurements to calculate SimMC. Here, DistMC is defined as the weighted distance of the distances between points sampled from model and point cloud. Similarly, Distance from point Cloud to Model (DistCM) is defined as the average distance of the distances between points in point cloud and model. In order to reduce huge computational burdens brought by calculation of DistCM in some traditional methods, we define SimMC as the ratio of weighted surface area of model to DistMC. Compared to those traditional SimMC measuring methods that are only able to measure global similarity, our method is capable of measuring partial similarity by employing distance-weighted strategy. Moreover, our method is able to be faster than other partial similarity assessment methods. We demonstrate the superiority of our method both on synthetic data and laser scanning data.

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Sanz, Esteban, and Clifford I. Voss. "Inverse modeling for seawater intrusion in coastal aquifers: Insights about parameter sensitivities, variances, correlations and estimation procedures derived from the Henry problem." Advances in Water Resources 29, no. 3 (March 2006): 439–57. http://dx.doi.org/10.1016/j.advwatres.2005.05.014.

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41

Grilo, Tiago Jordão, Nelson Souto, Robertt Angelo Fontes Valente, António Andrade-Campos, Sandrine Thuillier, and R. J. Alves de Sousa. "On the Development and Computational Implementation of Complex Constitutive Models and Parameters’ Identification Procedures." Key Engineering Materials 554-557 (June 2013): 936–48. http://dx.doi.org/10.4028/www.scientific.net/kem.554-557.936.

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Nowadays, the automotive industry has focused its attention to weight reduction of the vehicles to overcome environmental restrictions. For this purpose, new materials, namely, advanced high strength steels and aluminum alloys have emerged. These materials combine good formability and ductility, with a high tensile strength due to a multi-phase structure (for the steel alloys) and reduced weight (for the aluminum alloys). As a consequence of their advanced performances, complex constitutive models are required in order to describe the various mechanical features involved. In this work, the anisotropic plastic behavior of dual-phase steels and high strength aluminum alloys is described by the non-quadratic Yld2004-18p yield criterion, combined with a mixed isotropic-nonlinear kinematic hardening law. This phenomenological model allows for an accurate description of complex anisotropy and Bauschinger effects of the materials, which are essential for a reliable prediction of deep drawing and springback results using numerical simulations. To this end, an efficient computational implementation is needed, altogether with an inverse methodology to properly identify the constitutive parameters to be used as numerical simulation input. The constitutive model is implemented in the commercial finite element code ABAQUS as a user-defined material subroutine (UMAT). A multi-stage return mapping procedure, which utilizes the control of the potential residual, is implemented to integrate the constitutive equations at any instant of time (pseudo-time), during a deformation process. Additionally, an inverse methodology is developed to identify the constitutive model parameters of the studied alloys. The identification framework is based on an interface program that links an optimization software and the commercial finite element code. This methodology compares experimental data with the respective results numerically obtained. The implemented optimization process aims to minimize an objective function, which defines the difference between experimental and numerical results using the Levenberg-Marquardt gradient-based optimization method. The proposed integrated approach is validated in a number of benchmarks in sheet metal forming, including monotonic and cyclic loading, with the goal to infer about the modelling of anisotropic effects.

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Butera, I., M. G. Tanda, and A. Zanini. "Use of numerical modelling to identify the transfer function and application to the geostatistical procedure in the solution of inverse problems in groundwater." Journal of Inverse and Ill-posed Problems 14, no. 6 (September 2006): 547–72. http://dx.doi.org/10.1515/156939406778474532.

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Lin, Zone-Ching, and Ven-Huei Lin. "Thermal conductivity investigation for upsetting with a procedure of combining inverse model and the proposed regularization of Tikhonov method." Journal of Materials Processing Technology 167, no. 2-3 (August 2005): 208–17. http://dx.doi.org/10.1016/j.jmatprotec.2005.06.036.

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Trunz, Elena, Jonathan Klein, Jan Müller, Lukas Bode, Ralf Sarlette, Michael Weinmann, and Reinhard Klein. "Neural inverse procedural modeling of knitting yarns from images." Computers & Graphics, December 2023. http://dx.doi.org/10.1016/j.cag.2023.12.013.

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Baldi, Guillaume, Rémi Allègre, and Jean-Michel Dischler. "Differentiable point process texture basis functions for inverse procedural modeling of cellular stochastic structures." Computers & Graphics, April 2023. http://dx.doi.org/10.1016/j.cag.2023.04.004.

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Minhas, Abdul, Robert Ariss, SALIK NAZIR, Keerat Ahuja, Muhammmad Khan, Tariq Jamal Siddiqi, Richard Krasuski, Stephen J. Greene, and Marat Fudim. "Abstract 9998: Association of Hospital Procedural Volume with Outcomes in Heart Transplantation." Circulation 144, Suppl_1 (November 16, 2021). http://dx.doi.org/10.1161/circ.144.suppl_1.9998.

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Background: Studies have shown an inverse relationship between procedural volume and outcomes for numerous procedures. The aim of this study was to evaluate the association of heart transplant (HT) procedural volume and in-hospital clinical outcomes. Methods: We conducted a retrospective analysis of adult hospitalizations from the Nationwide Readmissions Database (NRD) 2018. International Classification Diseases (ICD) codes were used to identify patients who underwent HT. Hospitals were categorized into 3 groups on the basis of tertiles of annual procedural volume: low (1-14 procedures/year), medium (14 to 27 procedures /year), and high (28 to 115 procedures /year). Hierarchical mixed effect logistic regression modeling with hospital as a random effect was used to examine the association between hospital procedural volume and outcomes. These models were adjusted for patient-level and hospital-level characteristics. Low volume hospitals were used as the reference category. Results: This study included 1689 procedures performed across 69 hospitals ( Table ). On multivariate analysis, there was no statistically significant difference in inpatient mortality, discharge to nursing home/long term care facility, stroke, acute kidney injury, bleeding requiring transfusion, pericardial complications, vascular complications or length of stay among low, medium and high-volume centers ( Table ). Interestingly there was a trend toward lower length of stay and lower inpatient mortality in high volume centers that did not reach statistical significance. Conclusion: Our study did not find any association between hospital HT procedural volume and clinical outcomes. Further studies are needed to confirm this.

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Schott, Hugo, Axel Paris, Lucie Fournier, Eric Guérin, and Eric Galin. "Large-scale terrain authoring through interactive erosion simulation." ACM Transactions on Graphics, April 25, 2023. http://dx.doi.org/10.1145/3592787.

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Large-scale terrains are essential in the definition of virtual worlds. Given the diversity of landforms and the geomorphological complexity, there is a need for authoring techniques offering hydrological consistency without sacrificing user control. In this paper, we bridge the gap between large-scale erosion simulation and authoring into an efficient framework. We set aside modeling in the elevation domain in favour of the uplift domain, and compute emerging reliefs by simulating the stream power erosion. Our simulation relies on a fast yet accurate approximation of drainage area and flow routing to compute the erosion interactively, which allows for incremental authoring. Our model provides landscape artists with tools for shaping mountain ranges and valleys, such as copy-and-paste operations; warping for imitating folds and faults; point and curve elevation constraints to precisely sculpt ridges or carve river networks. It also lends itself to inverse procedural modeling by reconstructing the uplift from an input digital elevation model and allows hydrologically consistent blending between terrain patches.

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Wayne, Nicole, Qufei Wu, Stephen C. Moore, Victor A. Ferrari, Scott D. Metzler, and Marie A. Guerraty. "Multimodality assessment of the coronary microvasculature with TIMI frame count versus perfusion PET highlights coronary changes characteristic of coronary microvascular disease." Frontiers in Cardiovascular Medicine 11 (June 20, 2024). http://dx.doi.org/10.3389/fcvm.2024.1395036.

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BackgroundThe diagnosis of coronary microvascular disease (CMVD) remains challenging. Perfusion PET-derived myocardial blood flow (MBF) reserve (MBFR) can quantify CMVD but is not widely available. Thrombolysis in Myocardial Infarction (TIMI) frame count (TFC) is an angiography-based method that has been proposed as a measure of CMVD. Here, we compare TFC and PET-derived MBF measurements to establish the role of TFC in assessing for CMVD. We use coronary modeling to elucidate the relationship between MBFR and TFC and propose TFC thresholds for identifying CMVD.MethodsIn a cohort of 123 individuals (age 58 ± 12.1, 63% women, 41% Caucasian) without obstructive coronary artery disease who had undergone perfusion PET and coronary angiography for clinical indications, we compared TFC and perfusion PET parameters using Pearson correlation (PCC) and linear regression modeling. We used mathematical modeling of the coronary circulation to understand the relationship between these parameters and performed Receiver Operating Curve (ROC) analysis.ResultsWe found a significant negative correlation between TFC and MBFR. Sex, race and ethnicity, and nitroglycerin administration impact this relationship. Coronary modeling showed an uncoupling between TFC and flow in epicardial vessels. In ROC analysis, TFC performed well in women (AUC 0.84–0.89) and a moderately in men (AUC 0.68–0.78).ConclusionsWe established an inverse relationship between TFC and PET-derived MBFR, which is affected by patient selection and procedural factors. TFC represents a measure of the volume of the epicardial coronary compartment, which is increased in patients with CMVD, and performs well in identifying women with CMVD.

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"MICRO- AND MACROGENESIS OF SEMANTIC ARCHITECTONICS OF CONSCIOUSNESS." Socialization & Human Development: International Scientific Journal 3, no. 1 (December 23, 2021): 53–65. http://dx.doi.org/10.37096/shdisj-21-1.1-0006.

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The purpose of the article is to highlight the genetic and functional plans of the semantic architectonics of human consciousness. The procedure of theoretical and methodological research is based on the methodological background of the genetic and modeling approach of S.D. Maksymenko, cultural and historical concept of L.S. Vyhotskyi, activity and system paradigms. It is defined the concept of “semantic architectonics of consciousness” as a multidimensional semantic construction that “puts” traces of fixed previous interactions and attitudes into events and situations in the semantic fields and mnemic contexts. It is specified that the “world picture” is a system of variable and objective cases of conceptualization of semantic architectonics of individual’s consciousness - intentionally activated dynamic semantic network with multiformat structure of plurality of individually set images of the world and oneself in it and hierarchical semantic connections (relations) between all specific elements that make up partial images and the network as a whole. The sources of the unique emotional color of crystallized patterns are revealed. These sources determine the detail and scale of a person’s subjective reality, his or her subjective personal response to the influence of objective reality. It is proved that the genesis of new semantic connections creates internal conditions to act in an active way, changing one's life world (subjective reality), “setting” it for the real world in a more specific way. It is substantiated the procedural chain of finding of the meaning, the progress-movement of which as an instrument of man’s discovery of oneself and the world, has a transitional but inverse form, namely: “world” ← → “unconscious connotations of non-verbal experiences” that have somatopsychic manifestation ← → “necessity” ← → “interiorisation” (which is combined with the selectivity of perception of another person due to the action of imprintings and mnemic contexts) ← → “intention” ← → “attitude, activity” ← → “understanding and interpretation” ← → “meaning” ← → objectified “intersubjective meaning” ← → “world”.

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Rafique, Rashad, Michael N. Fienen, Timothy B. Parkin, and Robert P. Anex. "Nitrous Oxide Emissions from Cropland: a Procedure for Calibrating the DayCent Biogeochemical Model Using Inverse Modelling." Water, Air, & Soil Pollution 224, no. 9 (August 15, 2013). http://dx.doi.org/10.1007/s11270-013-1677-z.

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