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    Wyświetlanie 1-13 z 13
    Tytuł:
    Design optimal rural road network using GIS
    Autorzy:
    Modinpuroju, A.
    Prasad, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/223559.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    rural roads
    optimal road network
    minimum travel time
    facility index
    GIS
    drogi wiejskie
    optymalna sieć dróg
    minimalny czas podróży
    indeks obiektu
    Opis:
    To have an effective development among the isolated, remote areas, rural transportation is recognized as a key factor. Efficient rural transportation depends largely on a well-knit road network to provide accessibility and mobility in rural areas. This work affords an applied method for the development of rural road networks in rural areas of developing countries. The proposed methodology enables to determine nodal points in the rural road network based on the facility index of the settlements. The rural road network is generated by connecting the nodal points by minimum travel time path in Geographical Information System (GIS). Spatial analysis is carried out in the study area to identify the Desirable Coverage Distance of the Facility(DCDF). The Village Facility Index (VFI) is calculated by considering the desirable coverage distance. The suggested methodology is simple and practical, hence, highly applicable to real-world scenarios, as demonstrated in the definition of the road network for the rural areas.
    Źródło:
    Archives of Transport; 2017, 41, 1; 63-71
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Feasible star – delta and delta – star transformations for reliability networks
    Autorzy:
    Prasad, V. C.
    Powiązania:
    https://bibliotekanauki.pl/articles/262801.pdf
    Data publikacji:
    2017
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
    Tematy:
    star–delta transformation
    delta–star transformation
    series parallel reliability networks
    Opis:
    Consider the problem of transforming a star (delta) into an equivalent delta (star) in a reliability network with imperfect undirected edges and perfect vertices. It is believed that such transformations are not possible in general if the probabilities of the elements of the given star / delta are rational numbers. Contrary to this, it is shown here that star – delta and delta – star transformations are possible under certain conditions. Further the probability of success of an element of an equivalent star (delta) is shown to be equal to the probability of failure of the corresponding element of the given delta (star).
    Źródło:
    Electrical Power Quality and Utilisation. Journal; 2017, 20, 1; 1-5
    1896-4672
    Pojawia się w:
    Electrical Power Quality and Utilisation. Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quality of Minimal Sets of Prime Implicants of Boolean Functions
    Autorzy:
    Prasad, V. C.
    Powiązania:
    https://bibliotekanauki.pl/articles/227310.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    logic circuits
    digital circuits
    Boolean functions
    minimal sets
    Opis:
    Two new problems are posed and solved concerning minimal sets of prime implicants of Boolean functions. It is well known that the prime implicant set of a Boolean function should be minimal and have as few literals as possible. But it is not well known that min term repetitions should also be as few as possible to reduce power consumption. Determination of minimal sets of prime implicants is a well known problem. But nothing is known on the least number of (i) prime implicants (ii) literals and (iii) min term repetitions , any minimal set of prime implicants will have. These measures are useful to assess the quality of a minimal set. They are then extended to determine least number of prime implicants / implicates required to design a static hazard free circuit. The new technique tends to give smallest set of prime implicants for various objectives.
    Źródło:
    International Journal of Electronics and Telecommunications; 2017, 63, 2; 165-169
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Novel method to simplify Boolean functions
    Nowa metoda upraszczania funkcji boolowskich
    Autorzy:
    Prasad, V. C.
    Powiązania:
    https://bibliotekanauki.pl/articles/282156.pdf
    Data publikacji:
    2018
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    Boolean functions
    digital electronics
    prime implicants
    funkcje boolowskie
    elektronika cyfrowa
    implikanty proste
    Opis:
    Most methods for determining the prime implicants of a Boolean function depend on the minterms of the function. Deviating from this philosophy, this paper presents a method that dependson maxterms (the minterms of the complement of the function) for this purpose. Normally, maxterms are used to get prime implicates and not prime implicants. It is shown that all prime implicants of a Boolean function can be obtained by expanding and simplifying any product of sums form of the function appropriately. No special form of the product of the sums is required. What is more, prime implicants can generally be generated from any form of the function by converting it into a POS using well-known techniques. The prime implicants of a product of Boolean functions can be obtained from the prime implicants of individual Boolean functions. This allows us to handle big functions by breaking them into the products of smaller functions. A simple method is presented to obtain one minimal set of prime implicants from all prime implicants without using minterms. Similar statements also hold for prime implicates. In particular, all prime implicates can be obtained from any sum of a products form.Twelve variable examples are solved to illustrate the methods.
    Większość metod wyznaczania implikantów prostych funkcji boolowskiej wykorzystuje mintermy funkcji. Niniejszy artykuł prezentuje odmienną metodę, która stosuje do tego celu makstermy (mintermy dopełnienia funkcji). Jest to podejście niestandardowe, gdyż zazwyczaj na podstawie makstermów uzyskuje się implicenty proste, a nie implikanty proste. W artykule pokazano, że wszystkie implikanty proste funkcji boolowskiej mogą być otrzymane przez odpowiednie rozwinięcie i uproszczenie funkcji podanej w dowolnej postaci typu iloczyn sum. Nie jest przy tym wymagana żadna szczególna postać tego iloczynu. Co więcej, implikanty proste mogą być zwykle utworzone na podstawie funkcji w dowolnej postaci, przez przekształcenie jej do postaci typu iloczyn sum z wykorzystaniem znanych metod. Implikanty proste iloczynu funkcji boolowskich można uzyskać z implikantów prostych poszczególnych funkcji. To pozwala operować na dużych funkcjach przez rozbicie ich na iloczyn mniejszych. Artykuł pokazuje prostą metodę uzyskania jednego zbioru minimalnego implikantów prostych na podstawie zbioru wszystkich implikantów prostych bez korzystania z mintermów. Podobne stwierdzenia mają zastosowanie także w przypadku implicentów prostych. W szczególności, wszystkie implicenty proste mogą być otrzymane z dowolnej formy typu suma iloczynów. Zaproponowana w artykule metoda została zilustrowana licznymi przykładami.
    Źródło:
    Automatyka / Automatics; 2018, 22, 2; 29-40
    1429-3447
    2353-0952
    Pojawia się w:
    Automatyka / Automatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kirchhoff’s laws from Tellegen’s Theorem
    Autorzy:
    Prasad, V. C.
    Powiązania:
    https://bibliotekanauki.pl/articles/262683.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
    Tematy:
    Kirchhoff’s laws
    Tellegen’s theorem
    circuit analysis
    graphs and electrical networks
    network theorems
    Opis:
    It is well known that Kirchhoff’s voltage (current) law and Tellegen’s theorem (vTi = 0) imply Kirchhoff’s current (voltage) law where v and i refer to the same graph. Careful analysis shows that these statements are not applicable to practical networks unless v and i refer to different networks having the same graph. They are rewritten and proved to take care of this.
    Źródło:
    Electrical Power Quality and Utilisation. Journal; 2016, 19, 1; 9-14
    1896-4672
    Pojawia się w:
    Electrical Power Quality and Utilisation. Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sinusoidal Oscillator Circuits Reexamined
    Autorzy:
    Prasad, V. C.
    Powiązania:
    https://bibliotekanauki.pl/articles/227105.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    sinusoidal oscillator
    Barkhausen’s criterion
    analog circuits
    feedback circuits
    Opis:
    Singular network condition is proposed to study oscillators. It states that a circuit is a potential oscillator if and only if the rank of the network matrix of size n X n is (n -1) at the frequency of oscillations. The dual (if it exists) and adjoint circuit of an oscillator are also oscillators. Limitations of Barkhausen’s approach are pointed out. It is explained that there are many ways to generate oscillations other than Barkhausen’s positive feedback configuration. The new approach emphasizes that appropriate D C inputs / initial conditions are important.
    Źródło:
    International Journal of Electronics and Telecommunications; 2018, 64, 1; 77-81
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental investigation to study the viscosity and dispersion of conductive and non-conductive nanopowders’ blended dielectrics
    Autorzy:
    Santarao, K.
    Prasad, C. L. V. R. S. V.
    Swami Naidu, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/102844.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    nanofluid
    viscosity
    dispersion
    sonication
    silicon carbide nano powder
    boric acid nano powder
    Opis:
    Nano fluids are nanotechnology-based colloidal dispersions engineered by stably suspending nanoparticles. The characteristics of nano fluids such as thermal and electrical conductivities, viscosity, specific heat, dispersion etc. were studied and analyzed by earlier researches at different particle concentrations with different nano fluids. It was established that nano fluids have a significant impact on the process due the improvised characteristics. Nano fluid viscosity and dispersion deserve the same attention as thermal conductivity in cases of nano dielectric fluids that are used in EDM as they influence the MRR. In this work, The viscosity and dispersion of the conductive and nonconductive Nano powders blended dielectrics are investigated as a function of volume fraction so as to evaluate the behavior of these nano fluids at different particle volume concentrations. Kerosene and deionized water based nano fluids blended with conductive (SiC) and non-conductive (boric acid) Nano particles are selected for the current study. It is observed that as the percentage volume fraction of nano particles (both SiC and boric acid) increased, the viscosity was found increasing when blended with DI water. But the viscosity behavior with kerosene blended with SiC and boric acid is not same. The existing experimental results about the nano fluids viscosity shows clearly that viscosity have a specific trend in variation with an increase of volume concentration. Boric acid blended with DIW and kerosene shows similar trend in dispersion. However, in case of SiC blended with DIW and kerosene showed some contradictory results giving scope for further investigation. The outcome of these experimental investigations will augment the works that are going on in studying its influence on MRR in EDM processes using nano blended dielectric medium.
    Źródło:
    Advances in Science and Technology. Research Journal; 2017, 11, 1; 154-160
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Climate change research - what do we need really?
    Autorzy:
    Prasad, P.R.C.
    Powiązania:
    https://bibliotekanauki.pl/articles/12022.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    This research note focuses on the current climate change research scenario and discusses primarily what is required in the present global climate change conditions. Most of the climate change research and models predict adverse future conditions that have to be faced by humanity, with less emphasis on mitigation measures. Moreover, research ends as reports on the shelves of scientists and researchers and as publications in journals. At this juncture the major focus should be on research that helps in reducing the impact rather than on analysing future scenarios of climate change using different models. The article raises several questions and suggestions regards climate change research and lays emphasis on what we really need from climate change researchers.
    Źródło:
    Papers on Global Change; 2015, 22
    2300-8121
    1730-802X
    Pojawia się w:
    Papers on Global Change
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reconfigurable manufacturing system – a new class of manufacturing system
    Autorzy:
    Prasad, Durga
    Jayswal, S. C.
    Powiązania:
    https://bibliotekanauki.pl/articles/407365.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    reconfigurable manufacturing system
    reconfigurability
    flexible manufacturing system
    flexibility
    reconfigurable machine tool
    Opis:
    Today’s manufacturing environment is highly uncertain, and it is continuously changing. It is characterized by shorter life cycles of products and technologies, shorter delivery times, an increased level of customization at the price of a standard product, increased product variety, quality as well as demand variability and intense global competition. Academicians, as well as practitioners, agree that uncertainty will continue to grow in the twenty-first century. To deal with the uncertainties in demand variation and production capacity a manufacturing system is required which can be easily reconfigured when there is a need at low cost. A reconfigurable manufacturing system is such a type of system. In the present work, the concept of the reconfigurable manufacturing system has been discussed and reviewed. It has been compared with dedicated systems and flexible manufacturing systems. Part family formation and barriers of reconfiguration also have been discussed. This work is an attempt to contribute to the conceptual systematization of the reconfigurable manufacturing system and reconfigurability by synthesizing the vast literature available after a systematic review.
    Źródło:
    Management and Production Engineering Review; 2019, 10, 4; 37-47
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simultaneous effects of heat transfer and variable viscosity on peristaltic transport of casson fluid flow in an inclined porous tube
    Autorzy:
    Manjunatha, G.
    Rajashekhar, C.
    Vaidya, H.
    Prasad, K. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/266265.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    liczba Darcy'ego
    zmienna lepkość
    granica plastyczności
    Darcy number
    thermal slip
    velocity slip
    variable viscosity
    yield stress
    Opis:
    The present study investigates the combined effects of varying viscosity and heat transfer on a Casson fluid through an inclined porous axisymmetric tube in the presence of slip effects. The modeled governing equations are solved analytically by considering the long wavelength and small Reynolds number approximations. The numerical integration is employed to obtain pressure rise and frictional force. A parametric analysis has been presented to study the effects of the Darcy number, angle of inclination, varying viscosity, velocity slip, thermal slip, yield stress, amplitude ratio, Prandtl number and Eckert number on the pressure rise, pressure gradient, streamlines, frictional force and temperature. The study reveals that an increase in the angle of inclination and viscosity parameter has a proportional increase in the pressure rise. Also, an increase in the porosity causes a significant reduction in the pressure rise.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2019, 24, 2; 309-328
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Edge artificial intelligence-based facial pain recognition during myocardial infarction
    Autorzy:
    Mohan, H. M.
    Shivaraj Kumara, H. C.
    Mallikarjun, S. H.
    Prasad, A. Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/27314262.pdf
    Data publikacji:
    2022
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    vital signs
    myocardial infarction
    facial pain expression
    computer vision
    medical assistance
    convolution neural network
    Opis:
    Medical history highlights that myocardial infarction is one of the leading factors of death in human beings. Angina pectoris is a prominent vital sign of myocardial infarction. Medical reports suggest that experiencing chest pain during heart attacks causes changes in facial muscles, resulting in variations in patterns of facial expression. This work intends to develop an automatic facial expression detection to identify the severity of chest pain as a vital sign of MI, using an algorithmic approach that is implemented with a state-of-the-art convolutional neural network (CNN). The advanced object detection lightweight CNN models are as follows: Single Shot Detector Mobile Net V2, and Single Shot Detector Inception V2, which were utilized for designing the vital signs MI model from the 500 Red Blue Green Color images private dataset. The authors developed cardiac emergency health monitoring care using an Edge Artificial Intelligence (“Edge AI”) using NVIDIA’s Jetson Nano embedded GPU platform. The proposed model is mainly focused on the factors of low cost and less power consumption for onboard real-time detection of vital signs of myocardial infarction. The evaluated metrics achieve a mean Average Precision of 85.18%, Average Recall of 88.32%, and 6.85 frames per second for the generated detections.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2022, 16, 3; 40--55
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new mechanism for data visualization with TSK-type preprocessed collaborative fuzzy rule based system
    Autorzy:
    Prasad, M.
    Liu, Y.-T.
    Li, D.-L.
    Lin, C. -T.
    Shah, R. R.
    Kaiwartya, O. P.
    Powiązania:
    https://bibliotekanauki.pl/articles/91743.pdf
    Data publikacji:
    2017
    Wydawca:
    Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
    Tematy:
    fuzzy interference system
    collaborative clustering
    fuzzy logic
    big data
    data visualization
    Opis:
    A novel data knowledge representation with the combination of structure learning ability of preprocessed collaborative fuzzy clustering and fuzzy expert knowledge of TakagiSugeno-Kang type model is presented in this paper. The proposed method divides a huge dataset into two or more subsets of dataset. The subsets of dataset interact with each other through a collaborative mechanism in order to find some similar properties within eachother. The proposed method is useful in dealing with big data issues since it divides a huge dataset into subsets of dataset and finds common features among the subsets. The salient feature of the proposed method is that it uses a small subset of dataset and some common features instead of using the entire dataset and all the features. Before interactions among subsets of the dataset, the proposed method applies a mapping technique for granules of data and centroid of clusters. The proposed method uses information of only half or less/more than the half of the data patterns for the training process, and it provides an accurate and robust model, whereas the other existing methods use the entire information of the data patterns. Simulation results show the proposed method performs better than existing methods on some benchmark problems.
    Źródło:
    Journal of Artificial Intelligence and Soft Computing Research; 2017, 7, 1; 33-46
    2083-2567
    2449-6499
    Pojawia się w:
    Journal of Artificial Intelligence and Soft Computing Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mass transfer analysis of two-phase flow in a suspension of microorganisms
    Autorzy:
    Mamatha, S.U.
    Ramesh, Babu, K.
    Durga Prasad, Putta
    Raju, C.S.K.
    Varma, S.V.K.
    Powiązania:
    https://bibliotekanauki.pl/articles/240799.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    gyrotactic microorganisms
    dusty fluid
    mass transfer
    stretching sheet
    bio convection
    boundary layer flow
    Opis:
    The aim of present work is to investigate the mass transfer of steady incompressible hydromagnetic fluid near the stagnation point with deferment of dust particles over a stretching surface. Most researchers tried to improve the mass transfer by inclusion of cross-diffusion or dust particles due to their vast applications in industrial processes, extrusion process, chemical processing, manufacturing of various types of liquid drinks and in various engineering treatments. To encourage the mass transport phenomena in this study we incorporated dust with microorganisms. Conservation of mass, momentum, concentration and density of microorganisms are used in relevant flow equations. The arising system of nonlinear partial differential equations is transformed into nonlinear ordinary differential equations. The numerical solutions are obtained by the Runge-Kutta based shooting technique and the local Sherwood number is computed for various values of the physical governing parameters (Lewis number, Peclet number, Eckert number). An important finding of present work is that larger values of these parameters encourage the mass transfer rate, and the motile organisms density profiles are augmented with the larger values of fluid particle interaction parameter with reference to bioconvection, bioconvection Lewis number, and dust particle concentration parameter..
    Źródło:
    Archives of Thermodynamics; 2020, 41, 1; 175-192
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-13 z 13

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