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111.
Kavita Mathur David Hinks Abdel‐Fattah M. Seyam Robert Alan Donaldson 《Color research and application》2009,34(3):225-232
Jacquard woven fabrics are made from colored yarns and different weaves for designing complex pictorial and other patterning effects. The final visualized color effect is the result of assigning weave designs to different areas of the pattern to be created. The current practice in creating Jacquard woven fabric designs is to produce many samples in a trial‐and‐error attempt to match artwork colors. An ability to simulate accurately the appearance of a design prior to manufacture is highly desirable to reduce trial‐and‐error sample production. No automated accurate digital color methodology is yet available to assist designers in matching the patterned woven fabric to the desired artwork. To achieve this, we developed a geometrical model to predict the color contribution of each yarn on the face of the fabric. The geometrical model combined with a Kubelka‐Munk based color mixing model allowed the prediction of the reflectance properties of the final color for a given design. We compared the predicted and experimental values of the reflectance properties for a range of fabrics using the same geometric model with three separate color mixing models. The geometrical model combined with a log‐based color mixing model produced reasonable agreement between predicted and measured ΔEab, with an average ΔEab of approximately five. © 2009 Wiley Periodicals, Inc. Col Res Appl, 34, 225–232, 2009 相似文献
112.
S. Basavaraja D. S. Balaji Mahesh D. Bedre D. Raghunandan P. M. Prithviraj Swamy A. Venkataraman 《Bulletin of Materials Science》2011,34(7):1313-1317
Nanometer-sized α-Fe2O3 particles have been prepared by a simple solvothermal method using ferric acetylacetonate as a precursor. The products were characterized by X-ray diffraction (XRD), energy dispersive X-ray microanalysis (EDAX), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transition electron microscopy (TEM), infrared spectroscopy (IR) and thermal analysis (TG-DTA). XRD indicates that the product is single-phase α-Fe2O3 with rhombohedral structure. Bundles of acicular shaped nanoparticles are seen in TEM images with an aspect ratio ~ 12; typically 8–12 nm wide and over 150 nm long. The α-Fe2O3 nanoparticles posses a high thermal stability, as observed on thermal analysis traces. 相似文献
113.
Interface Mutation: an approach for integration testing 总被引:1,自引:0,他引:1
Delamaro M.E. Maidonado J.C. Mathur A.P. 《IEEE transactions on pattern analysis and machine intelligence》2001,27(3):228-247
The need for test adequacy criteria is widely recognized. Several criteria have been proposed for the assessment of adequacy of tests at the unit level. However, there remains a lack of criteria for the assessment of the adequacy of tests generated during integration testing. We present a mutation based interprocedural criterion, named Interface Mutation (IM), suitable for use during integration testing. A case study to evaluate the proposed criterion is reported. In the study, the UNIX sort utility was seeded with errors and Interface Mutation evaluated by measuring the cost of its application and its error revealing effectiveness. Alternative IM criteria using different sets of Interface Mutation operators were also evaluated. While comparing the error revealing effectiveness of these Interface Mutation-based test sets with same size randomly generated test sets, we observed that in most cases Interface Mutation based test sets are superior. The results suggest that Interface Mutation offers a viable test adequacy criteria for use at the integration level 相似文献
114.
A VERY SIMPLE SET OF PROCESS CONTROL RULES 总被引:2,自引:0,他引:2
115.
116.
Tensile strained InGaP-InGaAsP-GaAsP single quantum well broad area lasers have been grown by metalorganic chemical vapor deposition and the effects of strain on the device parameters have been studied. The lasing mode is found to be TE for a strain of -0.46% and TM for a strain of -0.71%. The role of barrier height in controlling gain and temperature dependence in this system is measured. A low threshold current density of 221 A/cm2 has been obtained for a cavity length of 2.34 mm with -0.46% strain 相似文献
117.
118.
OBJECTIVE: To report our clinical experience on the use of oral erythromycin for the treatment of severe gastrointestinal dysmotility in preterm infants. METHODOLOGY: A case series study of seven preterm infants (six were very low birthweight) with severe intestinal dysmotility in a tertiary neonatal centre. RESULTS: All responded favourably without adverse effects and tolerated full enteral feeding within 1-2 weeks of the commencement of the drug. CONCLUSIONS: As prolonged total parenteral nutrition carries significant risk of complications, this therapy could be considered in selected preterm infants who fail to establish enteral feeding after an extended period, and in whom an anatomically obstructive lesion of the gastrointestinal tract has been excluded. Meanwhile, we would caution against the widespread implementation of this therapeutic approach until formal evaluation by randomized controlled trials have established the exact role of erythromycin, or its analogues, in the treatment of intestinal dysmotility in preterm infants. 相似文献
119.
Using methods of dynamical systems, we construct examples of smooth, almost universally observable vector fields on the projective 1-space. These vector fields are non-linear, non-autonomous and their time dependence is almost periodic. 相似文献
120.
G. S. Gopalakrshna M. J. Mahesh S. P. Madhu K. G. Ashamanjari M. A. Shridhara S. Prasad 《Journal of Materials Science》2006,41(5):1423-1427
CsNiP and 2(LiZnHP2O7) crystals were synthesized by hydrothermal technique at moderate P-T conditions. Solubility results of both the compound
shown positive thermal coefficient and single crystal X-ray studies revealed, CsNiP crystallized in hexagonal system with
cell parameters; a = 7.173(2), c = 5.944(9) Å, V = 264.87(7) Å3 and space group P63/mmc and 2(LiZnHP2O7) crystallized in orthorhombic system with cell parameters; a = 12.3636 Å, b = 27.5330 Å, c = 6.8647 Å and space group, Pca21 exhibiting ring type of cavities with open aperture in the structure. CsNiP is a frequency
dependent paramagnetic and 2(LiZnHP2O7) is a diamagnetic. 相似文献