http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
RA 123 s: Three metaphor-less Algorithms for Economic Load Dispatch Solution
Manam Ravindra,Sangu Ravindra,Pamidi Lakshminarayana,Karri Manoz Kumar Reddy 대한전기학회 2022 Journal of Electrical Engineering & Technology Vol.17 No.2
This paper presents Rao-1, Rao-2 and Rao-3 algorithms (RA-123) approach to elucidate Economic Load Dispatch (ELD) problem which has Ramp Rate (RRL), Valve Point Eff ect (VPE), Prohibited Zones of Operation (POZ), and losses of lines. Besides most of the algorithms which depend on algorithmic-specifi c parameters, the proposed algorithm is independent of algorithmic-specifi c parameters. The principle contribution of this paper is to minimize the total generation cost by satisfying several constraints such as generation limits, load demand, valve point loading eff ect, and transmission losses considering metaphor-less algorithms (RA-123). The objective with VPE is considered to improve the performance of ELD. This paper determines the performance of proposed RA-123 algorithms considering diff erent constraints on each test case system and compares them. To explore, ability of proposed optimization algorithms, these are implemented on test networks having 6, 40 and 110 unit systems and outcomes are compared with results attained by prior optimization algorithms. The evaluation of results shows ability and effi cacy of (RA-123) for solving ELD problem.
Ravindra N. Bulakhe,Akram Alfantazi,이용록,이문용,심재진 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.101 No.-
The present work describes the deposition of coppersulfide (Cu2S) nanoflakes onto reduced grapheneoxide (rGO) on three dimensional (3D) nickel foam byinexpensive chemical methods. The nanohybridstructure exhibitedexcellent surface area (41.67 m2 g 1) with a porous structure (pore size 22.8 nm) andgood electrical conductivity with a maximum specific capacitance of 1264 F g 1 at a scan rate of 5 mV s 1. The Cu2S@rGOcomposite exhibits a significantlyhigher specific capacitance. The nanohybrid structureshowed outstandingcycling stability of 94 % after 10000cycles. The asymmetric supercapacitor (ASC)device, Cu2S@rGO//rGO exhibited a maximumspecific capacitance of 135 F g 1 withhighenergy andpower densities of 50 Wh kg 1, and 7000 W kg 1, respectively.
Synthesis of SiC/Si3N4 nanocomposite by using automotive waste tyres as resource
Ravindra Rajarao,Rifat Farzana,Rita Khanna,Veena Sahajwalla 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.29 No.-
Large number of waste automotive tyres are being disposed through landfill or illegally dumped and onlysmall proportions are currently recycled. Waste tyres can be a source of health and environmentalconcerns and also represents a loss of potential valuable source. The ecofriendly and resource recoveryapproach is critically required to recycle waste automotive tyres. In this paper, an attempt to synthesisSiC/Si3N4 nanocomposite by in situ process using automotive waste tyres as resources has been reported. The synthesis was carried by using simultaneous carbothermal reduction and nitridation reaction at1550 8C in nitrogen atmosphere using pyrolysed waste automotive tyre char as carbon source and silicondioxide as silica source. The formation of SiC and Si3N4 particles was confirmed by FTIR and XRDtechniques. Raman analysis signifies the major phases of b-SiC, a-Si3N4 and b-Si3N4. The particle size ofsynthesised SiC/Si3N4 nanocomposite was in the range of 20–100 nm and mainly composed of sphereshaped nanoparticles. This innovative approach of using automotive tyres as carbon source forsynthesising SiC/Si3N4 nanocomposite will reduce the volume of wastes in landfills, decreases the risk ofhealth concerns and also recovers valuable carbon resource.
On common and sequential fixed points via asymptotic regularity
Ravindra Kishor Bisht,Sayantan Panja,Kushal Roy,Mantu Saha 대한수학회 2022 대한수학회논문집 Vol.37 No.1
In this paper, we introduce some new classes of generalized mappings and prove some common fixed point theorems for a pair of asymptotically regular mappings. Our results extend and improve various well-known results due to Kannan, Reich, Wong, Hardy and Rogers, \'Ciri\'c, Jungck, G\'ornicki and many others. In addition to it, a sequential fixed point for a mapping which is the point-wise limit of a sequence of functions satisfying \'Ciri\'c-Proinov-G\'ornicki type mapping has been proved. Supporting examples have been given in strengthening hypotheses of our established theorems.
THE DEPENDENCE OF MARKET RETURN VOLATILITY ON TRADING VOLUME IN KOREA AND THAILAND
Ravindra Kamath,Jirayuth Chusanachoti People&Global Business Association 2000 Global Business and Finance Review Vol.5 No.1
The objective of this paper is to examine if the heteroskedasticity in stock market return data can be explained by incorporating trading volume as a mixing variable in the conditional variance equation. This study relies on daily returns and volumes of two developing markets in Asia, namely, the Korean Stock Exchange and the Stock Exchange of Thailand over the 9-year tumultuous period of 1990-1998. The results strongly suggest that the GARCH model adequately describes the two index return series in the absence of volume as a mixing variable. However, the introduction of volume does not succeed in eliminating or for that matter significantly reducing the ARCH and GARCH effects.
Ravindra Singh Chahar,Ravi Kumar B. 국제구조공학회 2019 Steel and Composite Structures, An International J Vol.31 No.4
This paper deals with the effect of ply orientation and control gain on tip transverse displacement of functionally graded beam layer for both active constrained layer damping (ACLD) and passive constrained layer damping (PCLD) system. The functionally graded beam is taken as host beam with a bonded viscoelastic layer in ACLD beam system. Piezoelectric fiber reinforced composite (PFRC) laminate is a constraining layer which acts as actuator through the velocity feedback control system. A finite element model has been developed to study actuation of the smart beam system. Fractional order derivative constitutive model is used for the viscoelastic constitutive equation. The control voltage required for ACLD treatment for various symmetric ply stacking sequences is highest in case of longitudinal orientation of fibers of PFRC laminate over other ply stacking sequences. Performance of symmetric and anti-symmetric ply laminates on damping characteristics has been investigated for smart beam system using time and frequency response plots. Symmetric and anti-symmetric ply laminates significantly reduce the amplitude of the vibration over the longitudinal orientation of fibers of PFRC laminate. The analysis reveals that the PFRC laminate can be used effectively for developing very light weight smart structures.
Ravindra M Shah 대한구강악안면병리학회 2007 대한구강악안면병리학회지 Vol.31 No.2
Oral mucosa is made of stra tifi ed oral epithelium(that forms the surface) and subjacent connective tissues Alt hough oral mucosa lines the oral cavity, and thus provides a barrier between external and inte1'na l(tissue) envi1'onment, it exp1'esses regional va1'ia tions in its clinical appearance based on its structu1'e(ker atini zation/ non- ke1'atini zation; nature of connective tissues ; vascul arity, etc.) . The structu1'e of or al mucosa a lso reflects its flln ctional adapta ti on. Available liter ature indicates t hat oral mucosa may be viewed as masticat ory, lining 0 1' specialized types, aJl of which remains continuously moist and unexposed to light. Oral mucosa, however, is subj ected to daily wear and tear due t o the natllre of food , environmental chernicals , t oxins and met abolites. Hence, an understanding of the biological behavior of its constituents cells and ext1'acellular matrice s , tha t• are in constant s tate of adapt ive changes, is usefll l. Oral epithelium is a multi - Iayered and multi - functional dynarnic system that separates the o1'al environment f1'om the va1'ied nature of the s llbj acent connective tlsslles The connective tissue is eithe1' loose or dense collagen ous, muscula r or osseous, and may contain glands. Thus,oral epithelia play a critical 1'ole in the mainten ance of homeost atic effi ciency of the environment of both the o1'al cavi ty and subj acent connective tisslles. The structure and fllncti ons of the oral epithelial cells are regulated by a complex interplay between genetic and environmental fa cto1's, the knowl edge of which is unfolding only recently. The fundamental prernise on whi ch 3-dimensional organization of oral epithelial integrity and st a bility are maintained is the principl e of st eady-state syst em. The basic featU1'e of the steady- st ate syst em is t he 1'egulation of cellula1' and t issue homeost atic mechanisms. Since during its ontogeny, oral epithelial cells are subj ect ed to daily wear and tear , resulting from external mechanical and chernical facto1's, a 1'eservoi1' of cells, with regene1'ative capacity(va1'iously labeled in lite1'ature as p1'ecurso1' ceJls, p1'ogeni tor cells OI‘ stem cell s) that can maintain the steady-state system of oral epi thelia, are 1'equired. Such a reservoir of cells are located in the basal layer of oral epithelia. These cells proliferates, differentiate into ker atinocyt es, and are lost through desquamation or a poptosis to maintain the steady-state syst em and thus equilibrium of tissue homeostasis