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Articles de revues sur le sujet « Asymmetrical Designs »

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Auteur : Grafiati

Publié le 8 septembre 2023

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1

Agarwal, S. B., et M. N. Das. « Asymmetrical Factorial Type Switch over Designs ». Calcutta Statistical Association Bulletin 35, n^o 3-4 (septembre 1986) : 149–56. http://dx.doi.org/10.1177/0008068319860304.

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In the present paper an attempt has been made to construct asymmetrical factorial type switch over designs having strip type arrangement of combination of the levels. To start with two factors at different levels have been considered. One factor has number of levels larger by one compared to the number of levels of other factor. The sequences of levels of second factor are associated with each level symbol of first factor. The situation is similar to strip plot designs in agricultural experiments. Method of construction along with analysis of these designs has been described in this paper.

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Gupta, V. K., Rajender Parsad, Lal Mohan Bhar et Basudev Kole. « Supersaturated Designs for Asymmetrical Factorial Experiments ». Journal of Statistical Theory and Practice 2, n^o 1 (mars 2008) : 95–108. http://dx.doi.org/10.1080/15598608.2008.10411863.

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3

Zi, Xue-Min, Min-Qian Liu et Run-Chu Zhang. « Asymmetrical Factorial Designs Containing Clear Effects ». Metrika 65, n^o 1 (14 avril 2006) : 123–31. http://dx.doi.org/10.1007/s00184-006-0064-9.

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Boguslavsky, Ilya, Slava Z. Brodsky et Gena R. Ioffe. « Regular uniform main-effect designs derivable from geometric factorial designs in 2n runs ». Model Assisted Statistics and Applications 15, n^o 4 (25 décembre 2020) : 323–33. http://dx.doi.org/10.3233/mas-200504.

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The article introduces a general method of construction of asymmetrical regular factorial main-effect designs in 2n runs. It presents a collection of optimal designs constructed by this method in 32, 64, 128, and 256 runs. The method provides exploration of design structure and construction of designs with required properties. Construction of composite designs is given as an example of design structure exploration.

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Han, Xiaoxue, Jianbin Chen, Min-Qian Liu et Shengli Zhao. « Asymmetrical split-plot designs with clear effects ». Metrika 83, n^o 7 (4 décembre 2019) : 779–98. http://dx.doi.org/10.1007/s00184-019-00755-0.

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Akinwolemiwa, Bamidele, Chaohui Wei et George Z. Chen. « Mechanisms and Designs of Asymmetrical Electrochemical Capacitors ». Electrochimica Acta 247 (septembre 2017) : 344–57. http://dx.doi.org/10.1016/j.electacta.2017.06.088.

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Das, A. D., et G. M. Saha. « Incomplete Block Designs for Asymmetrical Parallel Line Assays ». Calcutta Statistical Association Bulletin 35, n^o 1-2 (mars 1986) : 51–58. http://dx.doi.org/10.1177/0008068319860106.

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Methods of construction of incomplete block designs for asymmetrical parallel line assays based on C-designs with examples have been presented. Outline of analysos of these designs are given in general terms.

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8

El-Helbawy, Abdalla T., Essam A. Ahmed et Abdullah H. Alharbey. « Optimal designs for asymmetrical factorial paired comparison experiments ». Communications in Statistics - Simulation and Computation 23, n^o 3 (janvier 1994) : 663–81. http://dx.doi.org/10.1080/03610919408813192.

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9

Gupta, V. K., et A. K. Nigam. « A class of asymmetrical orthogonal resolution-IV designs ». Journal of Statistical Planning and Inference 11, n^o 3 (avril 1985) : 381–83. http://dx.doi.org/10.1016/0378-3758(85)90043-6.

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Kageyama, Sanpei. « Connectedness of PBIB designs having asymmetrical association schemes ». Annals of the Institute of Statistical Mathematics 37, n^o 1 (décembre 1985) : 139–43. http://dx.doi.org/10.1007/bf02481086.

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El Mossadeq, A., et A. Koblinsky. « Run orders and quantitative factors in asymmetrical designs ». Applied Stochastic Models and Data Analysis 8, n^o 4 (décembre 1992) : 259–81. http://dx.doi.org/10.1002/asm.3150080403.

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12

Gou, Tingxun, Hong Qin et Kashinath Chatterjee. « Efficient Asymmetrical Extended Designs Under Wrap-Around L2-Discrepancy ». Journal of Systems Science and Complexity 31, n^o 5 (8 août 2018) : 1391–404. http://dx.doi.org/10.1007/s11424-018-7131-y.

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Koster, Lennard A., Joris E. Meinardi, Bart L. Kaptein, Enrike Van der Linden - Van der Zwaag et Rob G. H. H. Nelissen. « Two-year RSA migration results of symmetrical and asymmetrical tibial components in total knee arthroplasty : a randomized controlled trial ». Bone & ; Joint Journal 103-B, n^o 5 (1 mai 2021) : 855–63. http://dx.doi.org/10.1302/0301-620x.103b5.bjj-2020-1575.r2.

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Aims The objective of this study was to compare the two-year migration pattern and clinical outcomes of a total knee arthroplasty (TKA) with an asymmetrical tibial design (Persona PS) and a well-proven TKA with a symmetrical tibial design (NexGen LPS). Methods A randomized controlled radiostereometric analysis (RSA) trial was conducted including 75 cemented posterior-stabilized TKAs. Implant migration was measured with RSA. Maximum total point motion (MTPM), translations, rotations, clinical outcomes, and patient-reported outcome measures (PROMs) were assessed at one week postoperatively and at three, six, 12, and 24 months postoperatively. Results A linear mixed-effect model using RSA data of 31 asymmetrical and 38 symmetrical TKAs did not show a difference in mean MTPM migration pattern of the tibial or femoral components. Mean tibial component MTPM at two years postoperative of the asymmetrical TKA design was 0.93 mm and 1.00 mm for the symmetrical design. For the femoral component these values were 1.04 mm and 1.14 mm, respectively. No significant differences were observed in other migration parameters or in clinical and PROM measurements. Conclusion The TKA design with an asymmetrical tibial component has comparable component migration with the proven TKA with a symmetrical tibial component. This suggests the risk of long-term aseptic loosening of the two designs is comparable. Cite this article: Bone Joint J 2021;103-B(5):855–863.

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Rao, K. Sreenivasa, G. E. Babu, P. Ravi kumar, M. Anusha, A. Saiprashad et P. Kiran Babu. « Validation and Profile Modification of a Spur Gear to Improve the Gear Tooth Strengths ». International Journal of Innovative Research in Computer Science & ; Technology 10, n^o 4 (26 juillet 2022) : 218–21. http://dx.doi.org/10.55524/ijircst.2022.10.4.27.

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The idea of using asymmetric tooth forms has gained momentum in gearing design. Similar to symmetric basic rack gears, tooth action parameters are established in the first stage. The second stage involves calculating the unified generating basic rack for a set of mated gears. In some cases, it is possible to determine the features of specific fundamental rack tooth profiles for each gear in a transmission. Gearings with asymmetrical profiles have the advantage of having a higher-pressure angle than operational profiles (as a result of a lower pressure angle than non-operating profiles) and the possibility for a considerable improvement in the face contact ratio. In this study, symmetric and asymmetric tooth profiles will be compared using the finite element analysis tool Ansys. Asymmetric (different pressure angle) and symmetric (different pressure angle) tooth profiles will be designed and built in the 3D modelling software CATIA. The designs made with different materials will go through structural examination (mild steel and EN 32 steel).

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Meyer, Martha J., Sheryl Lee Day et Yung-Bin Benjamin Lee. « Symmetry in Building Block Design for Learning Disabled and Nonlearning Disabled Boys ». Perceptual and Motor Skills 74, n^o 3_suppl (juin 1992) : 1031–39. http://dx.doi.org/10.2466/pms.1992.74.3c.1031.

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This study examined perceptual differences in symmetry with and without a model between 21 learning disabled boys with reading deficits and 28 learning disabled boys with deficits in mathematics. 55 nonlearning disabled boys served as controls. All boys were in Grades 3, 4, or 5. Without a model, all learning disabled boys built significantly more asymmetrical building block designs than nonlearning disabled boys. However, with a model, all learning disabled boys could imitate the model, but it took them longer to complete the task successfully. All boys appeared to have difficulty in modeling asymmetrical tasks taking more time for task completion after seeing an asymmetrical model. This study suggests modeling perceptual tasks might be an effective teaching strategy for such children

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KUMAR, PRAKASH, KRISHAN LAL, ANIRBAN MUKHERJEE, UPENDRA KUMAR PRADHAN, MRINMOY RAY et OM PRAKASH. « Advanced row-column designs for animal feed experiments ». Indian Journal of Animal Sciences 88, n^o 4 (5 janvier 2023) : 499–503. http://dx.doi.org/10.56093/ijans.v88i4.78895.

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Inappropriate statistical designs may misinterpret results of animal feed experiments. Thus complete statistical designs can make animal feed research more appropriate and cost effective. Usually factorial row-column designs are used when the heterogeneity in the experimental material is in two directions and the experimenter is interested in studying the effect of two or more factors simultaneously. Attempts have been to develop the method of construction of balanced nested row column design under factorial setup. Factorial experiments are used in designs when two or more factors have same levels or different levels. The designs that are balanced symmetric factorials nested in blocks are called block designs with nested row-column balanced symmetric factorial experiments. These designs were constructed by using confounding through equation methods.Construction of confounded asymmetrical factorial experiments in row-column settings and efficiency factor of confounded effects was worked out. The design can be used in animal feed experiment with fewer resources by not compromising the test accuracy.

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Kashinath, Chatterjee, Gou Tingxun et Qin Hong. « Optimal additions to asymmetrical fractional factorial designs under Lee discrepancy ». SCIENTIA SINICA Mathematica 50, n^o 5 (29 avril 2020) : 599. http://dx.doi.org/10.1360/n012019-00095.

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Wanyoike, J. N., M. M. Manene et F. Njui. « EFFICIENCY FACTORS FOR LINEAR CONTRASTS IN CONFOUNDED ASYMMETRICAL FACTORIAL DESIGNS ». Far East Journal of Theoretical Statistics 55, n^o 1 (30 janvier 2019) : 23–52. http://dx.doi.org/10.17654/ts055010023.

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Queiroz, Nuno C., Fernando P. Lima, Pedro A. Ribeiro, Sílvia G. Pereira et António M. Santos. « Using Asymmetrical Designs for Environmental Impact Assessment of Unplanned Disturbances ». Hydrobiologia 555, n^o 1 (février 2006) : 223–27. http://dx.doi.org/10.1007/s10750-005-1118-0.

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20

Hua, J., et P. S. Walker. « Relative motion of hip stems under load. An in vitro study of symmetrical, asymmetrical, and custom asymmetrical designs. » Journal of Bone & ; Joint Surgery 76, n^o 1 (janvier 1994) : 95–103. http://dx.doi.org/10.2106/00004623-199401000-00012.

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21

Passos, Diego, Cledson O. de Sousa et Celio Albuquerque. « An NDT Model for Block Designs Operating Under Asymmetrical Duty Cycling ». IEEE Wireless Communications Letters 9, n^o 12 (décembre 2020) : 2116–20. http://dx.doi.org/10.1109/lwc.2020.3014512.

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Bagchi, S. « On theE-optimality of certain asymmetrical designs under mixed effects model ». Metrika 34, n^o 1 (décembre 1987) : 95–105. http://dx.doi.org/10.1007/bf02613134.

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23

Ai, Ming-Yao, et Run-Chu Zhang. « Projection justification of generalized minimum aberration for asymmetrical fractional factorial designs ». Metrika 60, n^o 3 (novembre 2004) : 279–85. http://dx.doi.org/10.1007/s001840300310.

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Aggarwal, M. L., et V. Sarin. « Use of asymmetrical factorials for generating designs for quadratic mixture model ». Statistics & ; Probability Letters 27, n^o 3 (avril 1996) : 275–79. http://dx.doi.org/10.1016/0167-7152(95)00084-4.

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25

Song, Hyunwoo, Kyoung-Nam Kim et Daniel Hernandez. « Simulation Design of Incremental Leg Tapered Birdcage Coil for Head Imaging at 4.7T MRI ». Applied Sciences 11, n^o 5 (26 février 2021) : 2064. http://dx.doi.org/10.3390/app11052064.

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This study analyzed asymmetrical designs of birdcage (BC) coils, for which the conventional shape of the BC is modified in order to improve field intensity and uniformity in the brain region for magnetic resonance imaging (MRI) at 4.7T. Typically the BC coil has insufficient field uniformity when operating at higher frequencies such as 200 MHz, corresponding to the Larmor frequency at 4.7T, due to the interaction between the electrical properties of body tissue and the propagated magnetic field wavelength. We propose a new design of BC coil, which consists of different ring diameters and leg width. The performance of proposed designs was compared to that of a head-size BC coil. Using finite-difference time-domain simulations to obtain the |B1+| fields for a human model, we demonstrate that the proposed designs can achieve better field intensity and uniformity compared with other BC coil designs.

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Velasco, Carlos, Abhishek Pathak, Andy T. Woods, Andres Corredor et Andrew J. Elliot. « The relation between symmetry in food packaging and approach and avoidance words ». Quarterly Journal of Experimental Psychology 73, n^o 5 (19 novembre 2019) : 654–63. http://dx.doi.org/10.1177/1747021819887172.

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Research on aesthetic science has demonstrated that people generally prefer symmetrical over asymmetrical compositions. However, it remains unclear whether and how such compositions relate to the concepts of approach and avoidance motivation, especially in consumer contexts. In addition, it is not known how symmetry may influence such concepts in contexts where objects can differ in terms of their hedonic values (symmetry/product taste congruency). In the present research, we evaluated the relation between visual symmetry of the packaging of products with different hedonic value (sweet, non-sweet, non-food) and approach and avoidance words. In two experiments, we found evidence that people associate symmetrical designs with approach words more often than asymmetrical designs. Importantly, however, we did not find evidence that such an effect is influenced by the hedonic value of the products. Our results have value for scholars and practitioners interested in the effect of aesthetic features of brand elements (such as a product’s packaging) on consumer motivation.

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Barone, Stefano, et Alberto Lombardo. « Balanced Asymmetrical Nearly Orthogonal Designs for first and second order effect estimation ». Journal of Applied Statistics 33, n^o 4 (mai 2006) : 373–86. http://dx.doi.org/10.1080/02664760500448917.

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Brown, Steven P., Pamela M. Homer et J. Jeffrey Inman. « A Meta-Analysis of Relationships between Ad-Evoked Feelings and Advertising Responses ». Journal of Marketing Research 35, n^o 1 (février 1998) : 114–26. http://dx.doi.org/10.1177/002224379803500111.

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The authors conduct meta-analyses of relationships involving positive and negative ad-evoked feelings to determine (1) whether the effects of positive and negative feelings on advertising responses are symmetrical or asymmetrical and bipolar or bidimensional; (2) whether study design characteristics influence the strength of effects of positive and negative feelings on ad and brand attitudes; (3) whether moderator effects are differential for positive and negative feelings; and (4) whether relationships are generalizable across different study designs, product types, and media. Using the aggregated data, the authors assess competing predictions of three alternative theoretical perspectives: bipolarity, generalized asymmetry, and contingent asymmetry. Analyses indicate that positive and negative feelings have contingently asymmetrical effects on advertising responses. Study conditions related to subjects’ cognitive processing sets moderated the effects of negative feelings on ad and brand attitudes but generally did not moderate the effects of positive feelings. The authors also demonstrate the utility of bootstrapping as an advantageous new way of conducting moderator analyses in meta-analysis.

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Sharma, M. K. « A Note on Main Effect Plans ». Calcutta Statistical Association Bulletin 47, n^o 1-2 (mars 1997) : 111–16. http://dx.doi.org/10.1177/0008068319970109.

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Method of construction of main effect plans (saturated and unsaturated) through BIB designs, using necessary and sufficient condition of proportional frequencies, is proposed. Using this condition, we obtain two new plans 216/18 and 225/27 not reported earlier. Utilising these plans, we have obtained two new asymmetrical orthogonal main effect plans.

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Abu-Bakar, Siti Hawa, Firdaus Muhammad-Sukki, Daria Freier, Roberto Ramirez-Iniguez, Tapas Kumar Mallick, Abu Bakar Munir, Siti Hajar Mohd Yasin et al. « Potential of Implementing the Low Concentration Photovoltaic Systems in the United Kingdom ». International Journal of Electrical and Computer Engineering (IJECE) 7, n^o 3 (1 juin 2017) : 1398. http://dx.doi.org/10.11591/ijece.v7i3.pp1398-1405.

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This paper discusses the prospect of integrating a novel type of low concentration photovoltaic (LCPV) design known as the rotationally asymmetrical compound parabolic concentrator (RACPC) in a building in the United Kingdom. This is done by proposing a number of building integration designs to create a zero carbon building. A cost reduction analysis of installing the LCPV systems in the country is also presented. It was found that an RACPC design could reduce the LCPV module’s manufacturing cost by 31.75% and the LCPV module’s cost per unit power output by 33.87% when compared with the conventional PV module.

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Cartmell, Matthew, Olga Ganilova, Eoin Lennon et Gavin Shuttleworth. « Motorised momentum exchange space tethers : the dynamics of asymmetrical tethers, and some recent new applications ». MATEC Web of Conferences 148 (2018) : 01001. http://dx.doi.org/10.1051/matecconf/201814801001.

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This paper reports on a first attempt to model the dynamics of an asymmetrical motorised momentum exchange tether for spacecraft payload propulsion, and it also provides some interesting summary results for two novel applications for motorised momentum exchange tethers. The asymmetrical tether analysis is very important because it represents the problematic scenario when payload mass unbalance intrudes, due to unexpected payload loss or failure to retrieve. Mass symmetry is highly desirable both dynamically and logistically, but it is shown in this paper that there is still realistic potential for mission rescue should an asymmetry condition arise. Conceptual designs for tethered payload release from LEO and lunar tether delivery and retrieval are also presented as options for future development.

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Zhou, Xiaodong, Yunjuan Wang et Rongxian Yue. « Robust Optimum Life-Testing Plans under Progressive Type-I Interval Censoring Schemes with Cost Constraint ». Symmetry 14, n^o 5 (19 mai 2022) : 1047. http://dx.doi.org/10.3390/sym14051047.

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This paper considers optimal design problems for the Weibull distribution, which can be used to model symmetrical or asymmetrical data, in the presence of progressive interval censoring in life-testing experiments. Two robust approaches, Bayesian and minimax, are proposed to deal with the dependence of the D-optimality and c-optimality on the unknown model parameters. Meanwhile, the compound design method is applied to ensure a compromise between the precision of estimation of the model parameters and the precision of estimation of the quantiles. Furthermore, to make the design become more practical, the cost constraints are taken into account in constructing the optimal designs. Two algorithms are provided for finding the robust optimal solutions. A simulated example and a real life example are given to illustrate the proposed methods. The sensitivity analysis is also studied. These new design methods can help the engineers to obtain robust optimal designs for the censored life-testing experiments.

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Trabzon, Levent, Huseyin Kizil, Levent Yobas, Arzu Ozbey, Mustafa Yilmaz, Meral Cengiz, Metin Trabzon, Mustafa Ordu et Nihat Kaygusuz. « The Effect of Asymmetry on Particle Focusing in Microchannels ». Advanced Materials Research 403-408 (novembre 2011) : 482–85. http://dx.doi.org/10.4028/www.scientific.net/amr.403-408.482.

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We studied the effect of geometry on single focusing of particles in the passive microfluidic channels. There is a quantitative analysis of focusing on non-axisymmetric straight channels with two different unique designs as well as curved channels having symmetrical and asymmetrical radius of curvatures in one turn. We found that there is a clear relationship in existence of single line focusing with the degree of non-symmetry in microchannels. One-degree of asymmetry in straight channels does not induce any formation of single focusing, but single line focusing is pronounced by two-degree of asymmetry in straight channels. On the other hand, single line focusing in the curved channels is enhanced with asymmetrical radius of curvatures in one turn. The single line focusing in curved channels is seen at Rep values higher than 1, which gives us better continuous and high-throughput performance. The position of single focused particles in the microchannels is found to be 50 m with respect to the channel wall in the asymmetrical curved microchannels.

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Penna, Marina, Paola Gennaro, Tiziano Bacci, Benedetta Trabucco, Enrico Cecchi, Cecilia Mancusi, Luigi Piazzi, Francesco Sante Rende, Fabrizio Serena et Anna Maria Cicero. « Multiple environmental descriptors to assess ecological status of sensitive habitats in the area affected by the Costa Concordia shipwreck (Giglio Island, Italy) ». Journal of the Marine Biological Association of the United Kingdom 98, n^o 1 (22 août 2017) : 51–59. http://dx.doi.org/10.1017/s0025315417001485.

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The aim of the study was to evaluate the effectiveness of the application of multiple environmental descriptors through an asymmetrical sampling design to detect possible impacts related to the Costa Concordia event on the coastal marine environment. The Costa Concordia shipwreck occurred on a submerged rocky reef in the north-western Mediterranean Sea and the wreck was removed 2 years later. To achieve the proposed objective two main coastal ecosystems, the seagrass Posidonia oceanica and coralligenous assemblages were studied using two ecological indices, PREI and ESCA, respectively. Both indices show a lower ecological quality in the disturbed sites compared with the control ones. Differences between the disturbed and control sites observed in both studied ecosystems would seem to indicate an increase of turbidity around the shipwreck as the most plausible cause of impact. The concurrent use of different ecological indices and asymmetrical sampling designs allowed detection of differences in ecological quality of the disturbed sites compared with the controls. This approach may represent an interesting tool to be employed in impact evaluation studies.

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Wen, C. Y., et H. T. Chang. « Design and Characterization of Valveless Impedance Pumps ». Journal of Mechanics 25, n^o 4 (décembre 2009) : 345–54. http://dx.doi.org/10.1017/s1727719100002835.

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ABSTRACTThis study designs, fabricates and characterizes three valveless impedance pumps, namely a symmetrical pump with a circular cross-section, an asymmetrical pump with a circular cross-section, and an asymmetrical pump with a rectangular cross-section. The pressure head and flow rate characteristics of the three pumps are investigated as a function of the compression location, the compression frequency and the compression amplitude. The experimental results show that the flow is reversible in every case. Moreover, the pressure head is found to be significantly dependent on the actuating frequency, the compression location and the compression amplitude. However, no pressure head is produced when the pinching effect is applied at the center of channel configuration for the symmetrical pump. In the symmetrical pump, a maximum pressure head of 590mm is obtained at a frequency of 26Hz, and results in a flow rate of 0.581/min in the positive direction (i.e. from the left-hand reservoir of the pump to the righthand reservoir). Meanwhile, in the asymmetrical pumps with circular and rectangular cross-sections, respectively, maximum pressure heads of −620mm and −570mm are developed at frequencies of 36Hz and 32Hz, respectively. The corresponding flow rates are determined to be 0.641/min and 0.531/min, respectively. In both cases, the fluid moves in the negative direction (i.e. from the right-hand reservoir of the pump to the left-hand reservoir). Overall, the valveless impedance pumps developed in this study generate a high pumping rate, are easily fabricated and have no moving mechanical valves. As a result, they are eminently suitable for pumping applications in such diverse systems as biomedical devices, fuel cells, PC cooling systems, and so forth.

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Guk, Hye Ran. « Shape Changes of Slice Parallel Line and Preferential Angle Line Asymmetry Cut according to Head Area Division, Length, Angle and Slice Line ». Asian Journal of Beauty and Cosmetology 20, n^o 4 (29 décembre 2022) : 519–30. http://dx.doi.org/10.20402/ajbc.2022.0095.

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Purpose: In this study, the asymmetrical cut of the left parallel line and the right diagonal line was examined by varying the length, angle, and slice line. Additionally, basic data on haircuts will be provided.Methods: The head region division was divided into upper and lower parts. The angle of the parallel line on the left, the right side of the right side, and the head were 25°, 50°, and 75°, respectively. The slice A (diagonal) line on the side was 25°, the parallel line was 50°, and the V (diagonal) line was 75°.Results: The one-reel angle represents smoothness and orderliness. Furthermore, rough texture and arrangement represent gradation. The feeling of liveliness and rhythm appear when the head area division position is up, and the feeling of volume and weight increases when it is down. The A (diagonal) line represents maturity, maturity, and thinness, the parallel line represents plain and smooth, and the V (diagonal) line represents cuteness and youthfulness. The imbalance of asymmetrical cuts can offer freshness, mystery, vibrant dynamics, rhythm, and mystery.Conclusion: Different types of cut designs can be reborn if you abandon the same way of thinking. Based on this, it is considered that sensuous haircut designs are endless.

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Stoddard, J. E., D. J. Deehan, A. M. J. Bull, A. W. McCaskie et A. A. Amis. « No difference in patellar tracking between symmetrical and asymmetrical femoral component designs in TKA ». Knee Surgery, Sports Traumatology, Arthroscopy 22, n^o 3 (1 juin 2013) : 534–42. http://dx.doi.org/10.1007/s00167-013-2534-8.

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Ceylan, Gülsüm, Gülsüm Sayın Özel, Gözde Memişoglu, Faruk Emir et Sevgin Şen. « Evaluating the Facial Esthetic Outcomes of Digital Smile Designs Generated by Artificial Intelligence and Dental Professionals ». Applied Sciences 13, n^o 15 (6 août 2023) : 9001. http://dx.doi.org/10.3390/app13159001.

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This study evaluates the preference rates for smile designs created by professionals or by Artificial Intelligence (AI) among dentists, dentistry students, and laypeople. Four cases with symmetrical and asymmetrical features were selected based on the Facial Flow (FF) concept from the database of the Smile Designer app regarding anatomical facial points. Two smile designs were created for each selected case: one using Artificial Intelligence (AI) and one created manually. An online survey assessed participants’ preferences for the different smile designs. The chi-square test “Pearson’s and Fisher’s exact test (P)” was used to analyze the survey data. A total of 628 people completed the study. Dentists preferred the manually-created smile design for the first three cases. For Case 4, dentists who used the Smile Designer program preferred the manually-created design (55.88%), while those who did not use the program preferred the AI-generated design (55.84%). There was a significant difference in esthetic perception between dentists and dental students (p = 0.001) and between dentists and laypeople (p = 0.001) for Case 1, only between dentists and dental students (p = 0.003) for Case 2, and only between dentists and laypeople (p = 0.001) for Case 3. Furthermore, we found that females (p = 0.007) and orthodontists (p = 0.025) had a higher preference for the AI-generated design in this case compared to males and other dental specialties for Case 3. While age, education level, and clinical experience did not significantly impact dentists’ preference for manually-created or AI-generated smile designs (p > 0.05), our results suggest that there were some differences in preference for Case 3. Overall, our findings suggest that the use of AI-generated smile designs for symmetric faces is acceptable to both dentists and laypeople and can offer time-saving benefits for clinicians.

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Bevilacqua, S., et A. Terlizzi. « Species surrogacy in environmental impact assessment and monitoring : extending the BestAgg approach to asymmetrical designs ». Marine Ecology Progress Series 547 (7 avril 2016) : 19–32. http://dx.doi.org/10.3354/meps11656.

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Verma, Ankita, et Rajeev Kumar. « Construction of Asymmetrical Response Surface Designs of form 2m×3n in Presence of Neighbour Effect ». Current Advances in Agricultural Sciences(An International Journal) 14, n^o 1 (2022) : 90–93. http://dx.doi.org/10.5958/2394-4471.2022.00024.7.

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Minns, R. J. « Wear and Contact Stress Studies of the Minns Meniscal Knee Prosthesis ». Engineering in Medicine 17, n^o 3 (juillet 1988) : 135–38. http://dx.doi.org/10.1243/emed_jour_1988_017_035_02.

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This paper describes the results of wear testing and contact area studies of a Minns meniscal knee prosthesis and compares the results of previous work on wear and contact stress studies of other knee prosthesis designs. Although stresses that arise at the surface of the polyethylene meniscus components are large, after repetitive loading the contact area rises, as a consequence of plastic flow and creep, and they reduce to a fifth of the initial stress after 1 million cycles. Contact area studies show that asymmetrical loading of the meniscus give proportionally high stresses on the higher loaded meniscus and, at large values of flexion, have similar values to a more conforming but fixed polyethylene tibial component design of knee prosthesis.

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Wang, Dawei, Yujie Hu, Wencheng Yue, Youhong Zeng, Zhijuan Tu, Yan Cai, Wei Wang, Qing Fang et Mingbin Yu. « Broadband and compact polarization beam splitter based on an asymmetrical directional coupler with extra optimizing designs ». Applied Optics 58, n^o 30 (17 octobre 2019) : 8221. http://dx.doi.org/10.1364/ao.58.008221.

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Pantoja-Pacheco, Yaquelin Verenice, Armando Javier Ríos-Lira, José Antonio Vázquez-López, José Alfredo Jiménez-García, Martha Laura Asato-España et Moisés Tapia-Esquivias. « One Note for Fractionation and Increase for Mixed-Level Designs When the Levels Are Not Multiple ». Mathematics 9, n^o 13 (22 juin 2021) : 1455. http://dx.doi.org/10.3390/math9131455.

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Mixed-level designs have a wide application in the fields of medicine, science, and agriculture, being very useful for experiments where there are both, quantitative, and qualitative factors. Traditional construction methods often make use of complex programing specialized software and powerful computer equipment. This article is focused on a subgroup of these designs in which none of the factor levels are multiples of each other, which we have called pure asymmetrical arrays. For this subgroup we present two algorithms of zero computational cost: the first with capacity to build fractions of a desired size; and the second, a strategy to increase these fractions with M additional new runs determined by the experimenter; this is an advantage over the folding methods presented in the literature in which at least half of the initial runs are required. In both algorithms, the constructed fractions are comparable to those showed in the literature as the best in terms of balance and orthogonality.

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Abdel-Majeed, Mahmoud S., Abdullah Shawier, Ayman S. Abdel-Khalik, Mostafa S. Hamad, Mohamed M. Sedky et Noha A. Elmalhy. « General Current Control of Six-Phase-Based Non-Isolated Integrated On-Board Charger with Low Order Harmonic Compensation ». Sustainability 14, n^o 3 (18 janvier 2022) : 1088. http://dx.doi.org/10.3390/su14031088.

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Electric vehicle charging technology has recently witnessed massive developments due to its significant role in the ever-growing number of electric vehicles on the market. The integrated on-board charger technology (IOBC) represents an effective and attractive solution to reduce EV size, cost, and weight. IOBC technology employs propulsion components, such as the motor and its converter, in the charging process. The main objective of IOBC is to achieve the maximum charging current with zero average/pulsating torque so that mechanical interlocking can be dispensed. Recently, some of the IOBC topologies have adopted machines with six-phase stators to exploit the many advantages of multiphase-based systems. This paper investigates the effect of the winding design, namely, chorded or un-chorded designs, as well as the winding configuration, namely, dual three-phase, asymmetrical, or symmetrical winding configurations, on the current quality of a six-phase-based non-isolated IOBC. The relation between the winding design and the induced low order harmonics in the charging current is first clarified. The required current controller structure is then proposed, which ensures balanced grid line currents with high quality, under either healthy or one-phase fault conditions. Finally, a comparative study between all available designs with the proposed current controller is carried out to validate the theoretical findings.

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MacDessi, Samuel, Darren Chen et Monther Gharaibeh. « Intra-operative Analysis of Different Patellar Implant Designs in Total Knee Replacement : A Prospective Randomised Comparative Trial ». Orthopaedic Journal of Sports Medicine 5, n^o 5_suppl5 (1 mai 2017) : 2325967117S0016. http://dx.doi.org/10.1177/2325967117s00169.

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Objectives: Present scientific literature supports patellar resurfacing with regards to reduced re-operation risk and improved long term patient satisfaction in total knee arthroplasty (Schindler 2012). Two basic techniques are present for resurfacing the patella (Lachiewicz 2003); onlay and round inset (IN). Onlay designs are either symmetrical (round) (OR) or oval shaped with an asymmetric ridge (OO). When using a round patellar implant, a lateral facetectomy is often performed to avoid lateral compression syndrome and enhance patellar tracking (Zhang, Zhang et al. 2012). However, none of these implants have been found to be superior to the other. This study will compare three different types of patellar implant designs commonly used for resurfacing in TKA and report on intra-operative outcomes. We hypothesise that OO design offers improved bone coverage with less need to perform facetectomy when compared to round designs. Methods: A prospective, randomised trial was performed on patients undergoing unilateral TKA by 2 surgeons. Patients who agreed to participate were allocated to one of the three patellar design groups (IN, OR, OO). Patients were blinded to the implant assigned to them. The prostheses were implanted with the aim to restore pre-resection thickness, uniform facet thickness, with maximal bone coverage and medialisation of the median ridge to enhance tracking. Groups were compared in terms of implant size, percentage bone coverage, lateral facet underhang and requirement for facetectomy. Paired t-tests and ANOVA were used to compare continuous outcome measures with chi-squared test for categorical variables. Results: 86 patients were initially assessed for inclusion. Eight patients refused to participate and a further 18 did not meet the study inclusion criteria. A total of 60 patients were included in the final analysis. There were no differences between the 3 groups with regards to mean age, sex, pre-resection patellar thickness, patellar dimensions or pre-operative Kujala score. The asymmetrical onlay design resulted in a statistically significant larger button size (mean size 25.3 mm IN, 32.7 mm OR, 34.6 mm OO; p<0.001), reduced lateral underhang (mean 11.1mmm IN, 7.7 mm OR, 1.2 mm OO; p<0.001), and reduced need for facetectomy (85% IN, 85% OR, 0% OO). Percentage of surface bone coverage was 49%, 63.8%, 89.6% for IN, OR, OO implants respectively (p< 0.001). Conclusion: Oval onlay design demonstrates better surface bone coverage than round onlay or inlay implants. There were no cases in the oval group that required lateral facetectomy. Future analysis of this study group will aim to determine whether radiographic, patellar vascular and functional outcomes vary amongst the designs.

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Popa, Gabriel Nicolae, et Corina Maria Diniș. « Complex Electronic Protection for Low-voltage Three-phase Induction Motors ». WSEAS TRANSACTIONS ON ELECTRONICS 11 (7 mai 2020) : 11–17. http://dx.doi.org/10.37394/232017.2020.11.2.

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Low-voltage three-phase induction motors are most often used in industrial electric drives. Electric motors must be protected by electric and/or electronic devices against: short-circuit, overloads, asymmetrical currents, two-phase voltage operation, under-voltage, and over-temperature. To design the electronic protection currents, voltages and temperature must be measured to determine whether they fall within normal limits. The electronic protection was design into low capacity PLC. The paper presents the designs and analysis of complex electronic protection for general purpose low-voltage three-phase induction motors. The electronic protection has Hall transducers and conversion electronic devices for AC currents to DC voltages, AC voltages to DC voltage, temperature to DC voltage, a low capacity PLC, switches, motor’s power contactors, and signalling lamps has been developed. Experiments with complex electronic protection, for different faults are presented. The proposed protection has the advantages of incorporating all usual protections future for the low-voltage three-phase induction motors.

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HARRIS, IRINA M., MICHAEL J. FULHAM et LAURIE A. MILLER. « The effects of mesial temporal and cerebellar hypometabolism on learning and memory ». Journal of the International Neuropsychological Society 7, n^o 3 (mars 2001) : 353–62. http://dx.doi.org/10.1017/s1355617701733097.

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The effects of mesial temporal (MT) and cerebellar hypometabolism were studied using measures of verbal, visual and motor skill learning. Twelve patients with refractory temporal lobe epilepsy who showed asymmetrical mesial temporal lobe hypometabolism on [18F] fluoro-2-deoxy-glucose positron emission tomography (FDG-PET) were given tests involving 4 consecutive learning trials and a 30-min delayed recall trial. Delayed recognition was also assessed for the words and designs, and skill transfer was evaluated for mirror drawing. Compared to 9 normal control participants, patients with more marked MT hypometabolism on the left had impaired delayed recall of words and patients with more marked MT hypometabolism on the right showed impaired learning of novel designs, but normal retention over delay. Patients were not impaired in their mirror-drawing performance. The findings for MT hypometabolism correspond well to those obtained in other studies where patients have been classified on the basis of side of hippocampal atrophy or temporal lobe excision. (JINS, 2001, 7, 353–362.)

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Shahhoseini, Zahra, Majid Sarvi, Meead Saberi et Milad Haghani. « Pedestrian Crowd Dynamics Observed at Merging Sections : Impact of Designs on Movement Efficiency ». Transportation Research Record : Journal of the Transportation Research Board 2622, n^o 1 (janvier 2017) : 48–57. http://dx.doi.org/10.3141/2622-05.

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The need for reliable crowd simulation tools has necessitated an accurate understanding of human behavior and the rules that govern their movements under normal and emergency escapes. This paper investigates the dynamics of merging streams of pedestrians. In the merging sections, the interaction between pedestrians and geometric features of merging sections can significantly impede the collective motion and can increase the possibility of flow breakdown, particularly under emergency conditions. Therefore, to create safe and efficient designs, it is important to study human movement characteristics associated with these types of conflicting geometries. In this study, empirical data collected from large numbers of high-density experiments with people at different desired speed levels were used to explore the effect of different merging configurations (i.e., design and angle) on dynamics of merging crowds. For the first time, this study examined the impact of elevated speed regimes (as a behavioral proxy of emergency escapes) on the movement efficiency of crowds in merging sections with different geometric designs. In particular, this study investigated the impact of these conflicting geometric settings on the average waiting time in the system as a measure of movement efficiency. Results suggest that the experienced delay is dramatically greater in asymmetrical setups compared with the delay in symmetrical setups and that the difference is even more pronounced at elevated levels of pedestrians’ desired speed. These findings give significant insights into the implications of inefficient designs of merging sections for pedestrians’ safety, notably when quick movement of crowds is necessary (e.g., in emergencies).

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Xia, Liang-jie, et Hua-wei Zhi. « Ananlysis of Carbon Emission Reduction and Power Dominance between Single Manufacturer and Single Retailer in Regulatory Cap and Trade System ». Discrete Dynamics in Nature and Society 2014 (2014) : 1–12. http://dx.doi.org/10.1155/2014/523451.

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In the cap and trade system, the paper analyses the Stackelberg game between the power asymmetrical retailer and manufacturer and designs a side-payment self-enforcing contract to resolve some arguments that the existing research overemphasizes spontaneity of participation in side-payment contracts design based on supply chain coordination and does not consider rationality and fairness of allocation of profit increment. Also, the numerical analysis was given. The research shows some important conclusions: in the supply chain, the dominant manufacturer is not able to encourage the retailer to improve its promotion level by increasing its carbon cutting level, but the optimal emission reduction level increases with the dominant retailer’s promotion level; the optimal promotion level, emission reduction, and product demand in a retailer leading supply chain are higher than those in a supply chain dominated by manufacturer; with the new side-payment self-enforcing contract, decentralized decision according to individual rationality incurs a collective reason effect in the centralized setting.

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Hund, E., Y. Vander Heyden, M. Haustein, D. L. Massart et J. Smeyers-Verbeke. « Robustness testing of a reversed-phase high-performance liquid chromatographic assay : comparison of fractional and asymmetrical factorial designs ». Journal of Chromatography A 874, n^o 2 (avril 2000) : 167–85. http://dx.doi.org/10.1016/s0021-9673(00)00081-9.

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