Research and Implementation of Color Schemes in Color Digital Jacquard CAD

2011 ◽  
Vol 467-469 ◽  
pp. 1959-1966
Author(s):  
Peng Fang ◽  
Yong Sun ◽  
Yan Nian Rui
Keyword(s):  
Production Efficiency ◽  
Back Side ◽  
Color Selection ◽  
Cad System ◽  
Color Table ◽  
The Given

In color digital jacquard CAD system, the design of the color schemes is both significant and challenging. This paper mainly deals with how to design the jacquard scheme for each color in standard 256 color table with the given 6 different yarns. The features of the color schemes designed in this paper are as follows: 1. Manual operations are avoided in the process of yarn color selection; 2. Engineering difficulties are reduced through lessening the number of the yarns used for the weft; 3. The back side of the jacquard products is no longer in a mess; 4. With only a few changes, the color schemes in this paper can be comfortably applied to the present jacquard machines. In this way, we can not only improve the production efficiency, but also broaden the application market of color digital jacquard technology.

Prediction of Color Attributes Through Geometrical Modeling

2008 ◽  
Vol 12 (1) ◽  
pp. 19-31 ◽  
Author(s):  
Kavita Mathur ◽  
Abdel-Fattah M. Seyam ◽  
David Hinks ◽  
R. Alan Donaldson
Keyword(s):  
Geometric Modeling ◽  
Geometric Model ◽  
Subjective Evaluation ◽  
Woven Fabric ◽  
Warp Yarn ◽  
Color Selection ◽  
Cad System ◽  
System Operator ◽  
Color Mixing ◽  
Fabric Surface

Today, Jacquard woven fabric producers are able to digitally control each warp yarn individually, pre-program the variable pick density and speed for each filling yarn, and automatically change a pattern without stopping the weaving process. Jacquard CAD systems dramatically reduce the time to produce fabric from the artwork or target design The process of weave/color selection for each area of the pattern is, however, still highly dependent on the CAD system operator who works from a particular color gamut. Multiple weaving trials are required to get a sample that matches the original artwork since the process requires the designer‘s subjective evaluation. The lack of automatic selection of weaves/color matching prompts this research. This paper addresses the development of a geometric model for predicting the color contribution of each warp and filling yarn on the fabric surface in terms of construction parameters. The combination of geometric modeling and existing color mixing equations enables the prediction of the final color of different areas of a Jacquard pattern. The model was verified experimentally and a close agreement was found between a color mixing equation and the experimental measurements.

Affect of Application of Hairiness Reduction Equipment on Winding Quality

2011 ◽  
Vol 331 ◽  
pp. 437-443
Author(s):  
Jian Ping Lin ◽  
Hong Jun Cui
Keyword(s):  
High Speed ◽  
Production Efficiency ◽  
Standard Test ◽  
Appearance Quality ◽  
Yarn Quality ◽  
Test Conditions ◽  
Yarn Hairiness ◽  
The Given

In order to reduce yarn hairiness of spooling procedure and improve the quality of knotless yarn, contrast experiments, under the given standard test conditions, is performed among several cheese with or without airflow hairiness reduction equipment (HRE); analyzing and discussing the application effect and affect of HRE on yarn quality indexs. It is found from the investigation that the application of airflow HRE can effectively reduce yarn hairiness and also reduce yarn’s CV value of tenacity and improve its minimum tenacity, which can decrease ends’ breakage and machine suspension during high speed warping and high speed weaving production and improve weaving efficiency and appearance quality of fabric. Through analytic comparison, the application of airflow HRE will slightly increase yarn neps, but it’s still an effective method for reducing yarn hairiness and improve fabric appearance quality and weaving production efficiency.

scholarly journals Determination of technological parameters and tool for flanging holes from sheet blanks

2020 ◽  
Vol 164 ◽  
pp. 14019
Author(s):  
Khaidar Kaderov ◽  
Sergey Kireev ◽  
Marina Korchagina ◽  
Aleksey Lebedev
Keyword(s):  
Technological Development ◽  
Three Dimensional ◽  
Hole Diameter ◽  
Simultaneous Increase ◽  
Technological Parameters ◽  
Cad System ◽  
Dimensional Models ◽  
Three Dimensional Models ◽  
The Given

In the article the parameters of shaping operations of internal axisymmetric cylindrical flanging are considered. The article is written to improve the quality and speed of flanging round holes development from sheet blanks and tooling construction by increasing the accuracy of hole diameter calculation for flanging in the automated mode of building three-dimensional models of workpiece and a flanged product. Given formulas increase the accuracy of hole diameter calculation for flanging, taking into account the deformed condition of the sheet blank. The accuracy of the hole diameter calculation for flanging according to the given formulas is determined by comparing the mass of the workpiece with the mass of the flanged part. CAD system algorithm for automated construction of the flanged parts sketch and determination of technological parameters is implemented. The parameterized scheme of a typical construction of a flanging stamp is presented. The constructed schemes allow making changes in their parameters and providing automatic representation of calculation results and also their correct graphic interpretation. Discussion of the article results allows drawing conclusions about correctness of the given mathematical model and its applicability for the automated construction of three-dimensional models of the flanged details that will allow simplifying technological development and constructed documentation with simultaneous increase of their accuracy and reducing costs of production preparation.

Mammogram Analysis using League Championship Algorithm Optimized Ensembled FCRN Classifier

2017 ◽  
Vol 5 (2) ◽  
pp. 451 ◽  
Author(s):  
Saraswathi D ◽  
Srinivasan E
Keyword(s):  
Roc Curve ◽  
Operating Characteristic ◽  
Diagnostic System ◽  
Texture Features ◽  
Cad System ◽  
Trade Offs ◽  
Good Classification ◽  
Mammogram Image ◽  
The Given ◽  
Complex Valued

An intelligent mammogram diagnosis system can be very helpful for radiologist in detecting the abnormalities earlier than typical screening techniques. This paper investigates a new classification approach for detection of breast abnormalities in digital mammograms using League Championship Algorithm Optimized Ensembled Fully Complex valued Relaxation Network (LCA-FCRN). The proposed algorithm is based on extracting curvelet fractal texture features from the mammograms and classifying the suspicious regions by applying a pattern classifier. The whole system includes steps for pre-processing, feature extraction, feature selection and classification to classify whether the given input mammogram image is normal or abnormal. The method is applied to MIAS database of 322 film mammograms. The performance of the CAD system is analysed using Receiver Operating Characteristic (ROC) curve. This curve indicates the trade-offs between sensitivity and specificity that is available from a diagnostic system, and thus describes the inherent discrimination capacity of the proposed system. The result shows that the area under the ROC curve of the proposed algorithm is 0.985 with a sensitivity of 98.1% and specificity of 92.105%. Experimental results demonstrate that the proposed method can form an effective CAD system, and achieve good classification accuracy.

scholarly journals A Multicriteria Motion Planning Approach for Combining Smoothness and Speed in Collaborative Assembly Systems

2020 ◽  
Vol 10 (15) ◽  
pp. 5086
Author(s):  
Rafael A. Rojas ◽  
Erich Wehrle ◽  
Renato Vidoni
Keyword(s):  
Production Efficiency ◽  
Well Being ◽  
Human Robot Interaction ◽  
Cognitive Stress ◽  
Safety Requirements ◽  
Cognitive Ergonomics ◽  
Planning Approach ◽  
Variational Formalism ◽  
The Given

Human–robot interaction is an important aspect of Industry 4.0, and the extended use of robotics in industrial environments will not be possible without enabling them to safely interact with humans. This imposes relevant constraints in the qualitative characterization of the motions of robots when sharing their workspace with humans. In this paper, we address the trade-off between two such constraints, namely the smoothness, which is related to the cognitive stress that a person undergoes when interacting with a robot, and the speed, which is related to normative safety requirements. Given an execution time, such an approach will allow us to plan safe trajectories without neglecting cognitive ergonomics and production efficiency aspects. We first present the methodology able to express the balance between these qualities in the form of a composite objective function. Thanks to the variational formalism, we identify the related set of optimal trajectories with respect to the given criterion and give a suitable parametrization to them. Then, we are able to formulate the safety requirements in terms of a reparametrization of the motion. Finally, numerical and experimental results are provided. This allows the identification of the preferable sets of the possible motions that satisfy the operator’s psychological well-being and the assembly process performance by complying with the safety requirements in terms of mechanical risk prevention.

scholarly journals Economic efficiency of oilseed production in Ukraine

2021 ◽  
Vol 234 ◽  
pp. 00001
Author(s):  
Anna Slobodianyk ◽  
George Abuselidze ◽  
Valeriia Lymar
Keyword(s):  
Production Efficiency ◽  
Production Costs ◽  
Practical Implementation ◽  
Theoretical Significance ◽  
Oilseed Production ◽  
Relative Production ◽  
New Perspective ◽  
Price Instability ◽  
The Stability ◽  
The Given

The paper studies the dynamics of the relative production efficiency of the main agricultural crops in Ukrainian enterprises for 2017 – 2019 years, in particular sunflower. It has been established that price instability restrains the intensification at which oilseed yield increases, but the degree of risk increases due to the simultaneous trend of convergence of price indicators and production costs. It is concluded that the capacity building of the oil and fat industry should have scientifically sound limits. The work is innovative in terms of its approaches and recommendations, as well as in a new perspective of researching topics. The issues and provisions given in it may be used to analyze existing theoretical positions. In addition, the theoretical significance of the paper is it can become a motif and a major base for further studies in the given direction. The practical implementation of the conclusions, recommendations and suggestions obtained from the research will contribute to the stability of oilseed production after the Covid-19 pandemic.

Development of Stamping Process CAD System on Automatic Production Line for Robotic Manipulation

2014 ◽  
Vol 556-562 ◽  
pp. 2256-2261 ◽  
Author(s):  
Qi Xian Cao ◽  
Xiao Ting Xiao
Keyword(s):  
Production Line ◽  
Production Efficiency ◽  
Three Dimensional ◽  
Secondary Development ◽  
Automatic Production ◽  
Cad System ◽  
Safe Production ◽  
Stamping Process ◽  
Development Cycle ◽  
Automatic Production Line

. When transporting the large and medium-sized stamping parts on automatic stamping production line, robotic end picking-up device (tooling) needs reasonable clamping positions to ensure smooth precision transmission and safe production. Based on UG platform, this paper has used the secondary development technique to develop a stamping process CAD system on automatic production line for robot manipulation with UG/Open API functions in Visual c++ 6.0 environment, the system can quickly analyze the stamping process and the clamping positions for robots and generate a three-dimensional entity mould, which effectively shorten the production line product development cycle, improve the quality and production efficiency of stamping parts.

scholarly journals Survey of SNPs Associated with Total Number Born and Total Number Born Alive in Pig

Genes ◽  
2020 ◽  
Vol 11 (5) ◽  
pp. 491 ◽  
Author(s):  
Siroj Bakoev ◽  
Lyubov Getmantseva ◽  
Faridun Bakoev ◽  
Maria Kolosova ◽  
Valeria Gabova ◽  
...  
Keyword(s):  
Production Efficiency ◽  
Association Studies ◽  
Reproductive Traits ◽  
International Studies ◽  
Genome Wide Association Studies ◽  
Large White ◽  
Genome Wide ◽  
Genome Map ◽  
Trait Locus ◽  
The Given

Reproductive productivity depend on a complex set of characteristics. The number of piglets at birth (Total number born, Litter size, TNB) and the number of alive piglets at birth (Total number born alive, NBA) are the main indicators of the reproductive productivity of sows in pig breeding. Great hopes are pinned on GWAS (Genome-Wide Association Studies) to solve the problems associated with studying the genetic architecture of reproductive traits of pigs. This paper provides an overview of international studies on SNP (Single nucleotide polymorphism) associated with TNB and NBA in pigs presented in PigQTLdb as “Genome map association”. Currently on the base of Genome map association results 306 SNPs associated with TNB (218 SNPs) and NBA (88 SNPs) have been identified and presented in the Pig QTLdb database. The results are based on research of pigs such as Large White, Yorkshire, Landrace, Berkshire, Duroc and Erhualian. The presented review shows that most SNPs found in chromosome areas where candidate genes or QTLs (Quantitative trait locus) have been identified. Further research in the given direction will allow to obtain new data that will become an impulse for creating breakthrough breeding technologies and increase the production efficiency in pig farming.

scholarly journals A Survey on Cut Flower Cultivar Trends and Horticultural Status of Lilies (Lilium Hybrids) in South Korea

2013 ◽  
Vol 23 (5) ◽  
pp. 629-634 ◽  
Author(s):  
Yun-Im Kang ◽  
Hyang Young Joung ◽  
Dae Hoe Goo ◽  
Youn Jung Choi ◽  
Mok Pil Choi ◽  
...  
Keyword(s):  
South Korea ◽  
Production Efficiency ◽  
Low Cost ◽  
Cut Flowers ◽  
Soil Culture ◽  
South Korean ◽  
Rhizoglyphus Robini ◽  
Stable Production ◽  
Fungus Gnat ◽  
The Given

This study investigated trends in lily (Lilium hybrids) cultivars and challenges for growing cut lily flowers using a survey of producers in the South Korean lily industry. A questionnaire requested information on various topics including the total growing area, length of farming experience, cultivars grown, factors considered when purchasing bulbs, cultivation systems, horticultural practices, disease and pest problems, and horticultural problems. The survey targeted the membership of the Korea Lily Producer Association and the number of respondents corresponded to 43% of all lily farmers in the country. Oriental-Trumpet (OT) hybrid ‘Yelloween’ and Oriental hybrids ‘Siberia’, ‘Medusa’, and ‘Sorbonne’ were mainly cultivated in South Korea. The main flower colors were yellow, white, and pink. Factors considered in choosing cultivars were the prices of bulbs and cut flowers affecting income of the farm. More than 90% of respondents used soil culture in a greenhouse to grow cut flowers. There were various horticultural practices used from planting to harvest. The main pests harming bulb and flower productivity were fungus gnat (Bradysia difformis) and bulb mite (Rhizoglyphus robini), and the most common horticultural problem was leaf scorch. Overall, the survey suggested that the stable production of lily bulb with low cost and high quality was required and practical techniques should be developed for increasing the cut lily production efficiency. In addition, the pests, diseases, and horticultural problems in the given local environmental conditions should be considered when breeding new cultivars and developing production technology.

HREM observation of dislocations near room temperature fractures in silicon

1988 ◽  
Vol 46 ◽  
pp. 892-893
Author(s):  
M. H. Rhee ◽  
W. A. Coghlan
Keyword(s):  
Cross Section ◽  
Room Temperature ◽  
Single Crystal Silicon ◽  
Dislocation Nucleation ◽  
Back Side ◽  
Ion Milling ◽  
Crystal Silicon ◽  
Flat Surfaces ◽  
Induced Fractures ◽  
Vicker’S Microhardness

Silicon is believed to be an almost perfectly brittle material with cleavage occurring on {111} planes. In such a material at room temperature cleavage is expected to occur prior to any dislocation nucleation. This behavior suggests that cleavage fracture may be used to produce usable flat surfaces. Attempts to show this have failed. Such fractures produced in semiconductor silicon tend to occur on planes of variable orientation resulting in surfaces with a poor surface finish. In order to learn more about the mechanisms involved in fracture of silicon we began a HREM study of hardness indent induced fractures in thin samples of oxidized silicon.Samples of single crystal silicon were oxidized in air for 100 hours at 1000°C. Two pieces of this material were glued together and 500 μm thick cross-section samples were cut from the combined piece. The cross-section samples were indented using a Vicker's microhardness tester to produce cracks. The cracks in the samples were preserved by thinning from the back side using a combination of mechanical grinding and ion milling.

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