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Reliability assessment of three-dimensional bearing capacity of shallow foundation using fuzzy set theory

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Frontiers of Structural and Civil Engineering 2021年第2期15卷 478-489页

作者： Rajarshi PRAMANIK dilip kumar BAIDYA Nirjhar DHANG Department of Civil Engineering Indian Institute of Technology KharagpurKharagpur 721302India

The aim of this study is to investigate the applicability of reliability theory on surface square/rectangular footing against bearing capacity failure using fuzzy set theory in conjunction with the finite element *** is modeled as a three-dimensional spatially varying medium,where its parameters(cohesion,friction angle,unit weight,etc.)are considered as fuzzy variables that maintain some membership *** is idealized as an elastic-perfectly plastic material obeying the Mohr-Coulomb failure criterion,where both associated and non-associated flow rules are considered in estimating the ultimate bearing capacity of the *** spatial variability of the soil is incorporated for both isotropic and anisotropic fields,which are determined by the values of scales of fluctuation in both the horizontal and vertical directions.A new parameter namely,limiting applied pressure at zero failure probability is proposed,and it indirectly predicts the failure probability of the *** effect of the coefficient of variation of the friction angle of the soil on the probability of failure is analyzed,and it is observed that the effect is ***,the effect of the scale of fluctuation on the probability of failure is investigated,and the necessity for considering spatial variability in the reliability analysis is well proven.

关键词： finite element method square footing reliability analysis fuzzy set theory coefficient of variation spatial variability

Remote sensing and GIS for land use/cover mapping and integrated land management： case from the middle Ganga plain

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Frontiers of Earth Science 2012年第2期6卷 167-176页

作者： R B SINGH dilip kumar Department of Geography Delhi School of EconomicsUniversity of DelhiDelhi 110007India

In India, land resources have reached a critical stage due to the rapidly growing population. This challenge requires an integrated approach toward harnes- sing land resources, while taking into account the vulnerable environmental conditions. Remote sensing and Geographical Information System （GIS） based technologies may be applied to an area in order to generate a sustainable development plan that is optimally suited to the terrain and to the productive potential of the local resources. The present study area is a part of the middle Ganga plain, known as Son-Karamnasa interfluve, in India. Alternative land use systems and the integration of livestock enterprises with the agricultural system have been suggested for land resources management. The objective of this paper is to prepare a land resource development plan in order to increase the productivity of land for sustainable development. The present study will contribute necessary input for policy makers to improve the socio-eeonomic and environmental conditions of the region.

关键词： land use/cover remote sensing GIS middleGanga plain integrated land management

All-optical adder/subtractor based on terahertz optical asymmetric demultiplexer

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Chinese Optics Letters 2009年第6期7卷 530-533页

作者： dilip kumar Gayen Rajat kumar Pal Jitendra Nath Roy Department of Computer Science College of Engineering and Management Department of Computer Science and Engineering Calcutta University Department of Physics College of Engineering and ManagementKolaghat KTPP Township

An all-optical adder/subtractor （A/S） unit with the （TOAD） is proposed. The all-optical A/S unit with help of terahertz optical asymmetric demultiplexer a set of all-optical full-adders and optical exclusive- ORs （XORs）, can be used to perform a fast central processor unit using optical hardware components. We try to exploit the advantages of TOAD-based optical switch to design an integrated all-optical circuit which can perform binary addition and subtraction. With computer simulation results confirming the described methods, conclusions are given.

关键词： EDFA XOR All-optical adder/subtractor based on terahertz optical asymmetric demultiplexer mode

Impacts of soil fertility management on productivity and economics of rice and fodder intercropping systems under rainfed conditions in Odisha,India

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Journal of Integrative Agriculture 2021年第12期20卷 3114-3126页

作者： dilip kumar BASTIA Subrat kumar BEHERA Manas Ranjan PANDA All India Coordinated Research Project for Dryland Agriculture Odisha University of Agriculture and Technology(OUAT)Phulbani 762001India

Under small and marginal farm conditions,allocation of land exclusively for forages is not ***,integration of forages in existing crop geometry can ensure production of grain and fodder,simultaneously under rainfed *** experiment was conducted to study the effect of different nutrient management practices on rice and fodder intercropping systems under rainfed conditions during *** intercropping system comprised(i)sole rice(R),(ii)rice and cowpea(5:2)(CP)and(iii)rice and ricebean(5:2)(RB)whereas the different nutrient management practices comprised(i)application of farm yard manure(FYM)at 5t ha^(-1)(farmers'practice)(N_(1)),(ii)application of inorganic fertilizer(recommended dose of fertilizer(RDF)of rice,60:30:30 kg ha^(-1) of N:P_(2)O_(5):K_(2)O)(N_(2))and(iii)application of both FYM at 5t ha^(-1) and 50%of RDF inorganic fertilizer(N3).The results of the experiment revealed that the growth attribute such as leaf area was influenced significantly when fodder crops were taken as intercrops because rice plant was getting more nitrogen from soil due to nitrogen fixation of leguminous fodder *** the nutrient management practices,significant differences in leaf area were found beween N2 and and between N_(3)and N_(1)***,regarding total number of effective tillers,significant differences were found neither between nutrient management practices nor between cropping *** rice equivalent yield(REY)based on price(REY_(P))was found to be significantly lower in CP(2615 kg ha^(-1);-6.4%)and RB intercropping systems(2571 kg ha^(-1);-8.0%)than in R monocropping system(2794 kg ha^(-1)).However,the REY based on energy(REY_(E))of CP(2999 kg ha^(-1);+7.3%)and RB(2960 kg ha^(-1);+5.9%)were found to be significantly higher than that of R(2794 kg ha^(-1))irrespective of nutrient management *** different nutrient management practices,the N3 treatment recorded the highest REY_(P)and REY_(E)which was at par with

关键词： rice-based intercropping system fodder cultivation nutrient management rice and cowpea fodder intercropping system rice and ricebean fodder intercropping system

Stability study of fortified low-fat spreads with preservatives

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Food Quality and Safety 2022年第4期6卷 700-708页

作者： Suman Kharb dilip kumar Thompkinson Harshita kumari James L.Winkle College of Pharmacy University of CincinnatiCincinnatiOHUSA Dairy Technology Division National Dairy Research InstituteKarnalHaryanaIndia

Physicochemical variations in products are known to occur depending on storage *** study examined the effects of storage time on the physicochemical,sensory,rheological,and microbiological properties of fortified low-fat *** spreads containing potassium sorbate(PS;0.05%and 0.1%)or MicroGard 100(MG;0.5%and 1%)as preservatives and a control spread(CS)were packed in presterilized airtight polyethylene jars and their shelf lives were investigated by storage at(5±1)℃for 91 *** on the physicochemical properties,the addition of preservatives inhibited the formation of free fatty acids and thiobarbituric acid and influenced the pH and *** emulsion stability of the preserved samples was greater than that of the CS after 14 *** storage progressed,the sensory and rheological properties of the CS deteriorated continuously,whereas significantly smaller changes were observed for the samples containing 0.1%PS and 1%*** surface growth of yeasts and molds was the main cause of spoilage,particularly in the *** all the samples,the standard plate counts and the yeast and mold counts increased during *** contrast,the coliform counts were zero,indicating that the samples were manufactured and stored under hygienic *** samples containing lower levels of preservatives(0.05%PS and 0.5%MG)were acceptable for 70 d and 77 d as compared to 49 d for the ***,the addition of 0.1%PS and 1%MG extended the shelf life to 91 d.

关键词： Potassium sorbate(PS) MicroGard(MG) control spread(CS)

All-optical prefix tree adder with the help of terahertz optical asymmetric demultiplexer

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Chinese Optics Letters 2011年第6期9卷 82-86页

作者： dilip kumar Gayen Tanay Chattopadhyay Rajat kumar Pal Jitendra Nath Roy Department of Computer Science College of Engineering and Management Kolaghat KTPP Township Mechanical Operation (Stage-II) Kolaghat Thermal Power Station WBPDCL Mecheda Purba Medinipur KTPP Sub Post Office Department of Computer Science and Engineering Calcutta University Department of Physics NIT Agartala

We propose and describe an all-optical prefix tree adder with the help of a terahertz optical asymmetric demultiplexer （TOAD） using a set of optical switches. The prefix tree adder is useful in compound adder implementation. It is preferred over the ripple carry adder and the carry lookahead adder. We also describe the principle and possibilities of the all-optical prefix tree adder. The theoretical model is presented and verified through numerical simulation. The new method promises higher processing speed and accuracy. The model can be extended for studying more complex all-optical circuits of enhanced functionality in which the prefix tree adder is the basic building block.

关键词： tree All-optical prefix tree adder with the help of terahertz optical asymmetric demultiplexer XOR SOA

Terahertz optical asymmetric demultiplexer based tree-net architecture for all-optical conversion scheme from binary to its other 2^n radix based form

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Chinese Optics Letters 2008年第7期6卷 536-540页

作者： Jitendra Nath Roy Goutam kumar Maity dilip kumar Gayen Tanay Chattopadhyay Department of Physics College of Engineering and ManagementKolaghat Calcutta Institute of Technology UluberiaHowrahW.B.India Department of Computer Science College of Engineering and ManagementKolaghat KTPP Township.Midnapur (East).721171W.B.India Mechanical Operation (Stage-Ⅱ) Kolaghat Thermal Power StationWBPDCLIndia

To exploit the parallelism of optics in data processing, a suitable number system and an efficient encoding/decoding scheme for handling the data are very essential. In the field of optical computing and parallel information processing, several number systems like binary, quaternary, octal, hexadecimal, etc. have been used for different arithmetic and algebraic operations. Here, we have proposed an all-optical conversion scheme from its binary to its other 2^n radix based form with the help of terahertz optical asymmetric demultiplexer （TOAD） based tree-net architecture.

关键词： tree Terahertz optical asymmetric demultiplexer based tree-net architecture for all-optical conversion scheme from binary to its other 2~n radix based form net

Phosphorus partitioning and recovery of low-phosphorus iron-rich compounds through physical separation of Linz-Donawitz slag

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International Journal of Minerals,Metallurgy and Materials 2016年第7期23卷 751-759页

作者： dilip Makhija Rajendra kumar Rath Kaushik Chakravarty Abhay Shankar Patra Asim kumar Mukherjee Akhilesh kumar Dubey Research and Development Division Tata Steel Ltd. Mineral Processing Division CSIR-National Metallurgical Laboratory Raw Material Blending and Bedding Section Tata Steel Ltd.

The Linz-Donawitz（LD） steelmaking process produces LD slag at a rate of about 125 kg/t. After metallic scrap recovery, the non-metallic LD slag is rejected because its physical/chemical properties are unsuitable for recycling. X-ray diffraction（XRD） studies have indicated that non-metallic LD slag contains a substantial quantity of mineral phases such as di- and tricalcium silicates. The availability of these mineral phases indicates that LD slag can be recycled by iron（Fe）-ore sintering. However, the presence of 1.2wt% phosphorus（P） in the slag renders the material unsuitable for sintering operations. Electron probe microscopic analysis（EPMA） studies indicated concentration of phosphorus in dicalcium silicate phase as calcium phosphate. The Fe-bearing phases（i.e., wustite and dicalcium ferrite） showed comparatively lower concentrations of P compared with other phases in the slag. Attempts were made to lower the P content of LD slag by adopting various beneficiation techniques. Dry high-intensity magnetic separation and jigging were performed on as-received samples with particle sizes of 6 and 3 mm. Spiral separation was conducted using samples ground to sizes of less than 1 and 0.5 mm. Among these studies, grinding to 0.5 mm followed by spiral concentration demonstrated the best results, yielding a concentrate with about 0.75wt% P and 45wt% Fe.

关键词： steelmaking slag dephosphorization recycling

Detection of Fuel Adulteration Using Wave Optical with Machine Learning Algorithms

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Computer Systems Science & Engineering 2022年第4期41卷 19-33页

作者： S.dilip kumar T.V.Sivasubramonia Pillai Department of Instrumentation and Control Engineering Sri Krishna College of TechnologyCoimbatore641105TamilnaduIndia Department of Physics University College of EngineeringNagercoil629004TamilnaduIndia

Fuel is a very important factor and has considerable inﬂuence on the air quality in the environment,which is the heart of the *** increase of vehi-cles in lived-in areas results in greater emission of carbon particles in the *** fuel causes more contaminated particles to mix with breathing air and becomes the main source of dangerous *** is the mixing of foreign substances in fuel,which damages vehicles and causes more health problems in living beings such as humans,birds,aquatic life,and even water resources by emitting high levels of hydrocarbons,nitrogen oxides,and carbon *** frequent blending liquids are lubricants and kerosene in the petrol,and its adulteration is a considerable problem that adds to environ-mental *** study focuses on detecting the adulteration in petrol using sensors and machine learning algorithms.A modiﬁed evanescent wave opticalﬁber sensor with discrete wavelet transform is proposed for classiﬁcation of adult-erated data from the ***,support vector machine classiﬁer is used for accurate *** sensor isﬁrst tested with fuel and numerical data is classiﬁed based on machine learning ***,the result is eval-uated with less error and high accuracy of 99.9%,which is higher than all existing techniques.

关键词： Petrol adulteration discrete wavelet transform modiﬁed evanescent wave opticalﬁber SVM classiﬁer