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Search Results: 1 - 10 of 781 matches for " Subhransu Sahoo "
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A Behavioral Economics Study on the Management Accountant’s Professional Networking Practices through Mobile Technologies  [PDF]
Ashish Varma, Subhransu Sahoo
Theoretical Economics Letters (TEL) , 2018, DOI: 10.4236/tel.2018.814192
Abstract: The objective of this study was to ascertain the management accountant’s (MA) usage of smartphone for professional networking purposes. The study was conducted during mid-2017 to mid-2018 using a partial least squares-structural equation modeling (PLS-SEM) technique. The study included a sample of 168 management accountants from India. The study found out that the enjoyment of professional networking activity (EPA) has a direct significant effect on the perceived value of smartphone professional networking service (PVSP) and that the perceived risk (PR) had a significant negative effect on the trust in advice acquired from a smartphone professional networking service (TCASP). As expected, privacy concerns (PC) had a significant direct effect on the perceived risks (PR). The PVSP had a direct positive effect on TCASP. Finally, it was observed that PR mediates the relationship between PC and TCASP. Thus, this study contributes by bringing new empirical insights on the actual usage of mobile technology for professional networking purposes in an emerging market context and has significant ramifications for providers of such services.
Linearized Additive Classifiers
Subhransu Maji
Computer Science , 2011,
Abstract: We revisit the additive model learning literature and adapt a penalized spline formulation due to Eilers and Marx, to train additive classifiers efficiently. We also propose two new embeddings based two classes of orthogonal basis with orthogonal derivatives, which can also be used to efficiently learn additive classifiers. This paper follows the popular theme in the current literature where kernel SVMs are learned much more efficiently using a approximate embedding and linear machine. In this paper we show that spline basis are especially well suited for learning additive models because of their sparsity structure and the ease of computing the embedding which enables one to train these models in an online manner, without incurring the memory overhead of precomputing the storing the embeddings. We show interesting connections between B-Spline basis and histogram intersection kernel and show that for a particular choice of regularization and degree of the B-Splines, our proposed learning algorithm closely approximates the histogram intersection kernel SVM. This enables one to learn additive models with almost no memory overhead compared to fast a linear solver, such as LIBLINEAR, while being only 5-6X slower on average. On two large scale image classification datasets, MNIST and Daimler Chrysler pedestrians, the proposed additive classifiers are as accurate as the kernel SVM, while being two orders of magnitude faster to train.
A Comparative Analysis of Various Control Strategies Implemented on Heat Exchanger System: A Case Study
Subhransu Padhee,Yaduvir Singh
Lecture Notes in Engineering and Computer Science , 2010,
Voltage Stability Constrained Optimal Power Flow Using NSGA-II  [PDF]
Sandeep Panuganti, Preetha Roselyn John, Durairaj Devraj, Subhransu Sekhar Dash
Computational Water, Energy, and Environmental Engineering (CWEEE) , 2013, DOI: 10.4236/cweee.2013.21001

Voltage stability has become an important issue in planning and operation of many power systems. This work includes multi-objective evolutionary algorithm techniques such as Genetic Algorithm (GA) and Non-dominated Sorting Genetic Algorithm II (NSGA II) approach for solving Voltage Stability Constrained-Optimal Power Flow (VSC-OPF). Base case generator power output, voltage magnitude of generator buses are taken as the control variables and maximum L-index of load buses is used to specify the voltage stability level of the system. Multi-Objective OPF, formulated as a multi-objective mixed integer nonlinear optimization problem, minimizes fuel cost and minimizes emission of gases, as well as improvement of voltage profile in the system. NSGA-II based OPF-case 1-Two objective-Min Fuel cost and Voltage stability index; case 2-Three objective-Min Fuel cost, Min Emission cost and Voltage stability index. The above method is tested on standard IEEE 30-bus test system and simulation results are done for base case and the two severe contingency cases and also on loaded conditions.

Mitigation of Voltage Sags and Voltage Swells by Dynamic Voltage Restorer
D. Rajasekaran,Subhransu Sekhar Dash
International Journal of Electrical and Power Engineering , 2012, DOI: 10.3923/ijepe.2011.139.143
Abstract: Modern industrial processes are based on a large amount of electronic devices such as programmable logic controllers and adjustable speed drives. Unfortunately, electronic devices are sensitive to disturbances and thus industrial loads become less tolerant to power quality problems such as voltage sags, voltage swells and harmonics. The Dynamic Voltage Restorer (DVR) has become popular as a cost effective solution for the protection of sensitive loads from voltage sags and swells. This study deals with modeling and simulation of a Dynamic Voltage Restore (DVR) for mitigation of voltage sags and voltage swells. The control of the compensation voltages in DVR based on d-q-o algorithm is discussed. The controller in d-q-o coordinates has better performance than conventional controllers. The controlled variables in d-q-o coordinates are then inversely transformed to the original voltages which produced reference voltages to a DVR. The DVR restores constant load voltage and voltage wave form by injecting an appropriate voltage. Effectiveness of proposed technique is investigated through computer simulation by using Matlab/Simulnk software. The simulation results have shown validation of the control system.
A Finite Element Study of Elastic-Plastic Hemispherical Contact Behavior against a Rigid Flat under Varying Modulus of Elasticity and Sphere Radius  [PDF]
Prasanta Sahoo, Biplab Chatterjee
Engineering (ENG) , 2010, DOI: 10.4236/eng.2010.24030
Abstract: The present study considers a finite element analysis of elastic-plastic axi-symmetric hemispherical contact for a frictionless deformable sphere pressed by a rigid flat. The material of the sphere is modeled as elastic perfectly plastic. Analysis is carried out to study the effect of varying modulus of elasticity and sphere radius in wide range of dimensionless interference until the inception of plasticity as well as in plastic range. Results are compared with previous elastic-plastic models. It is found that materials with Young’s modulus to yield strength (E/Y) ratio less than and greater than 300 show strikingly different contact phenomena. The dependency of E on dimensionless interference at which the plastic region fully covers the surface is observed. However with different radius, finite element study exhibits similar elastic-plastic phenomena.
Physicochemical and Biochemical Reclamation of Soil through Secondary Succession  [PDF]
Kamala Haripal, Sunanda Sahoo
Open Journal of Soil Science (OJSS) , 2013, DOI: 10.4236/ojss.2013.35028

Conversion of forest to agricultural fields has become a common practice in India. Very often these fields have been abandoned due to lack of sustainable production. In course of time these fallow lands undergo natural secondary succession. Present study was carried out to find out the restoration of soil physicochemical and biochemical properties in a chronosequence of 2 yr, 4 yr, 6 yr, 11 yr, and 15 yr fallow lands. Soil enzyme activities play key roles in the biochemical functioning of soils, including soil organic matter formation and degradation, nutrient cycling, and reflect the change in soil management and land use. There was gradual improvement in the physical condition and nutrient status along with increase in soil amylase, cellulase, dehydrogenase, phophatase, and urease activity in the present study with the progress of fallow age which indicates the importance of natural secondary succession in soil restoration. However the PCA analysis indicated that natural vegetational succession could reclaim the soil quality and promote ecosystem restoration but it required a long time under the present local climatic condition.

Study of Morphology and Agar Contents in Some Important Gracilaria Species of Indian Coasts  [PDF]
Nivedita Sahu, Dinabandhu Sahoo
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.412A2007

This study reports the morphological, anatomical and agar content difference among various species of Gracilaria. The cortex was found 1-2 layered in G. edulis and G. eucheumatoides whereas 5-6 layered in G. foliifera and G. crassa. The medulla was 6-8 layered in G. edulis, 10-11 layered in G. foliifera, 14-15 layered in G. eucheumatoides and 8-10 layered in G. crassa. Similarly, distinct variations were observed in the structure of cystocarp of these taxa. The outer pericarp was 6-8 layered in G. verrucosa (attached type), 8-9 in Graciriopsis megaspora, 12-13 layered cells in G

The Factors Impacting the Long Term Settlements and Its Counter Impact on the Industries  [PDF]
D. P. Sahoo
Theoretical Economics Letters (TEL) , 2019, DOI: 10.4236/tel.2019.94053
Purpose of the Study: This paper aims to study the impact of Long Term Settlements, (LTS) which are considered to be instrumental in maintaining long term harmonious industrial relations in the organizations, by the Actors of Industrial Relations. The critical role played by such an instrument had been accepted in the available literature on the subject. But on its control mechanisms of maintaining long term harmonious industrial relations, the existing literature provides a limited insight. Data/Methodology: This study utilized a qualitative methodology and makes use of the inputs received from the respondents interviewed on the impacts of LTS in the emerging industrial context and industrial relations dynamics. The data collected from the interview were outcome of the experience in dealing in the organizational contexts where an LTS is in execution between the Management and the Trade union. Findings: In LTS, the parties get involve in social dialogue (both the trade union and the management) while having their respective interest in the LTS which helps in generating alternatives consistent with their interests. The LTS are social process of emerging to mutually acceptable norms on the payment of wages to the workers by the management for specific return on business, which is regulated under a dynamic context. The social dialogue and collective bargaining are the instruments to LTS both for the Management and the trade union. This study is very practical in nature, and it provides important insight on the dynamics of LTS as an outcome of
Voltage Stability Based Collapse Prediction and Weak Cluster Identification
C. Subramani,Subhransu Sekhar Dash,M. Jagadeeshkumar
International Journal of Electrical and Power Engineering , 2012,
Abstract: Voltage instability is a Phenomenon that could happen in a power system due to stressed condition. The result would be the occurrence of voltage collapse which leads to total blackout of the whole system. Therefore, voltage collapse prediction is important in power system planning and operation so that the occurrence of voltage collapse due to voltage instability could be avoided. Line outage in a power system could also, lead to the event of the voltage collapse which implies the contingency in the system. Contingency problem caused by line outage has been identified as one of the main reason to voltage instability in power system. This study presents, a new technique for contingency ranking based on voltage stability condition in power system. A new line stability index was formulated and used to identify the critical line outages and sensitive lines in the system. The line outage contingency ranking was performed on several loading condition in order to identify the effect of increase in loading to the critical line outages. Correlation study on the results obtained from contingency ranking and voltage stability analysis were also, conducted and it is found that line outages at the weak lines would cause voltage instability condition to a system. Subsequently, using the result from the contingency ranking weak areas in the system can be identified. The proposed contingency ranking technique was tested on IEEE reliability test system.
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