Mohan Kumar - Academia.edu (original) (raw)
Papers by Mohan Kumar
2017 IEEE International Conference on Smart Grid and Smart Cities (ICSGSC)
with high power coefficient, yet they are poor performers in low wind speed regime. As a potentia... more with high power coefficient, yet they are poor performers in low wind speed regime. As a potential solution to improve the low wind speed performance, a notched airfoil (KF-N-21) was incorporated into straight bladed Darrieus rotor and experimentally compared with conventional NACA0021 rotor from the earlier study. The experimental results displays the superior performance of KF-N-21 in the low Reynolds number without degrading the performance at the high Reynolds number .This paper presents the computational validation of previous experimental investigation and to numerically explore the two dimensional unsteady flow field over the notched airfoil in comparioson with NACA 0021 .A detailed flow characteristics are presented in terms of velocity and pressure distribution by capturing the vortex bubble formation .The simulation results shows a good agreement with the experimental data endorsing the performance of KF-N-21 airfoil for a wide range of Reynolds number.
To understand complex living system an effort has made by mechanical engineers and dentists to de... more To understand complex living system an effort has made by mechanical engineers and dentists to deliver prompt products and services to patients concerned about their aesthetic look. Since two decades various bracket systems have designed involving techniques like milling, injection molding which are technically not flexible for the customized dental product development. The aim of this paper to design, develop a customized system which is economical and mainly emphasizes the expertise design and integration of engineering and dental fields. A custom made selfadjustable lingual bracket and customized implants are designed and developed using computer aided design (CAD) and rapid prototyping technology (RPT) to improve the smiles and to overcome the difficulties associated with conventional ones. Lengthy orthodontic treatment usually not accepted by the patients because the patient compliance is lost. Patient-s compliance can be improved by facilitating faster tooth movements by desig...
while the substrate traverses under the nozzle carrier. The interaction between the jets and the ... more while the substrate traverses under the nozzle carrier. The interaction between the jets and the film layer is a complex phenomenon. The moving substrate poses further complexity. This work addresses the numerical modeling of the film removal process by using Computational Fluid Dynamics (CFD). The Volume Of Fluid (VOF) method, which is an interface tracking ap proach by acknowledging the presence of water, air and viscous layer, is used for multiphase modeling. Ro tary impingement is achieved by implementing an inlet condition which transforms the jet by a time dependent rotational tensor. The rough substrate is geometrically modeled and the viscous layer is resolved by employing a fine grid. Arbitrarily Mesh Interface (AMI) between the substrate and the jet regions enables the movement of the substrate with a certain velocity in perpendicular direction of impingement. The model en ables parametric analysis to study the effect of standoff distance, viscosity of the film layer, subs...
Sun International Journal of Engineering and Basic Sciences, 2018
Data Mining is one of the most motivating area of research that is become increasingly popular in... more Data Mining is one of the most motivating area of research that is become increasingly popular in health organization. Data Mining plays an important part to uncover new patterns in medicinal services association which thusly accommodating for all the parties associated with this field. This project intend to build a diagnostic model of the various diseases based on the symptoms by using Data Mining technique such as classification in health domain. In this project, we are going to use algorithms like Decision Tree, Naive bayes that can be utilized for health care diagnosis. Performances of the classifiers are compared to each other to find out highest accuracy. This also helps us to find out persons who are affected by the infection. The test information is completed utilizing some benchmark information.
Journal of Robotics and Mechanical Engineering Research, 2019
Product Marketing Management (PMM) is a key role in every manufacturing industry to enhance their... more Product Marketing Management (PMM) is a key role in every manufacturing industry to enhance their profit and business. The PMM can also impact on the market share of the organization. In this paper, an empirical study was carried out to understand the role of PMM in market share elevation. The fast growing top five smartphone brandssuch as Huawei, Xiaomi, Samsung, Vivo, and Oppohave been considered in the current investigation. The quarter wise market share percentage of these manufacturesfrom2016 to 2018. Consumers are becoming increasingly dependent on smartphones technology. Marketers are searching for ways to grasp opportunities stemming from the extraordinary mobile presentations and usage patterns. Product marketing strategies have been studied and the variation of market share during last three years datawas analysed. This study revels marketingstrategiesfor the effective of PMM to elevate the market shares. Finally,identified marketing strategies have been compared and validated to observe the variation inthe market shares.
Journal of Robotics and Mechanical Engineering Research, 2019
Indian agriculture sector is poised to take big leap with the Digital India program. Mobile appli... more Indian agriculture sector is poised to take big leap with the Digital India program. Mobile applications like KisanSuvidha, IFFCOKissan Agriculture, RML Farmer-KrishiMitr, PusaKrishi, AgriApp, KrishiGyan, Crop Insurance, AgriMarket and WhatsApp have shown positive impact. Recently government of India has launched eNam (e-National Agriculture Market) Platform for transparent sale transaction and price delivery. This article provides a detailed review of the available Agriculture Information system and how these applications have transformed agriculture scenario in India. The topic includes potential of technologies in modernizing agriculture within the Indian village boundaries. This investigation further performs feasibility study of Agriculture Information System. The main focus is to identify gap and suggest design typology for future Agriculture Information System.
Design methodology and criteria to configure sprue bush for enhancing functionality is systematic... more Design methodology and criteria to configure sprue bush for enhancing functionality is systematically compiled from plastic injection moulding machine perspective. Sprue conduit’s sensitivity to moulding objectives are quantitatively ghettoised as expansion ratio on the basis of ubiquitous empirical relationships. This generic, simple, inexpensive preventive criterion enables sprue bush conduit geometry design to exemplifying the melt injection specifically for a particular
RTA-Driven Intra-Die Variations in Stage Delay, and Parametric Sensitivities for 65nm Technology
2006 Symposium on VLSI Technology, 2006. Digest of Technical Papers.
We report, for the first time, a detailed study of intra-die variation (IDV) of CMOS inverter del... more We report, for the first time, a detailed study of intra-die variation (IDV) of CMOS inverter delay for the 65nm technology, driven by mm-scale variations of rapid thermal annealing (RTA). We find that variation in VT and REXT accounts for most of the IDV in delay and leakage and is modulated by lamp RTA ramp rate. We show a good
Reconfigurable distributed fault tolerant routing algorithm for on-chip networks
2013 IEEE International Symposium on Defect and Fault Tolerance in VLSI and Nanotechnology Systems (DFTS), 2013
ABSTRACT Network on chip (NoC) is emerging as a promising solution to overcome bus bottleneck for... more ABSTRACT Network on chip (NoC) is emerging as a promising solution to overcome bus bottleneck for future multi core chips. Fault tolerance and quality of service issues are potential challenges for NoCs. In this paper, we propose a cost-effective fault tolerant routing algorithm for irregular 2D mesh without use of routing tables. We use one hop visibility of Logic Based Distributed Routing (LBDR) to eliminate routing tables. This algorithm handles one or multiple single link faults within 2D mesh and uses reconfigured paths (minimal and/or non-minimal), if links fail. We use turn model based approach to avoid deadlocks. Since our method does not require virtual channels to achieve deadlock freedom, it remains area and power efficient.
Advances in Agroforestry, 2011
Aims and Scope Agroforestry, the purposeful growing of trees and crops in interacting combination... more Aims and Scope Agroforestry, the purposeful growing of trees and crops in interacting combinations, began to attain prominence in the late 1970s, when the international scientific community embraced its potentials in the tropics and recognized it as a practice in search of science. During the 1990s, the relevance of agroforestry for solving problems related to deterioration of family farms, increased soil erosion, surface and ground water pollution, and decreased biodiversity was recognized in the industrialized nations too. Thus, agroforestry is now receiving increasing attention as a sustainable land-management option the world over because of its ecological, economic, and social attributes. Consequently, the knowledge-base of agroforestry is being expanded at a rapid rate as illustrated by the increasing number and quality of scientific publications of various forms on different aspects of agroforestry. Making full and efficient use of this upsurge in scientific agroforestry is both a challenge and an opportunity to the agroforestry scientific community. In order to help prepare themselves better for facing the challenge and seizing the opportunity, agroforestry scientists need access to synthesized information on multi-dimensional aspects of scientific agroforesty. The aim of this new book-series, Advances in Agroforestry, is to offer state-of-the art synthesis of research results and evaluations relating to different aspects of agroforestry. Its scope is broad enough to encompass any and all aspects of agroforestry research and development. Contributions are welcome as well as solicited from competent authors on any aspect of agroforestry. Volumes in the series will consist of reference books, subject-specific monographs, peer-reviewed publications out of conferences, comprehensive evaluations of specific projects, and other book-length compilations of scientific and professional merit and relevance to the science and practice of agroforestry worldwide.
Wear, 2010
Thermal localisation (TL) phenomenon is defined as localisation of high temperature as consequenc... more Thermal localisation (TL) phenomenon is defined as localisation of high temperature as consequences of high strain gradients developed in the bulk of materials of a tribo-pair. High extent of localisation of thermal gradient is rated as a non-desirable parameter for a good friction material because it affects both the surfaces leading to thermal crazing, cracks and fatigue, especially of the disc apart from affecting wear. In the present work, four composites with identical parent composition (containing ingredients of all the four categories) but differing in the average particle size of natural graphite (21, 41, 71 and 137 m) were developed and evaluated on specially designed tribometer for enabling the studies of TL phenomenon. Two series of testing modes viz. inertia mode and rpm-mode were selected to bring out the correlation of selected graphite and their tendency to produce hot bands, hot spots and related phenomena on the counter-face. Overall, it was observed that the composites with lower particle size of graphite rendered better results than that with higher particle size. The study of hot-spot appearance and the TL behavior of tribo-pair are discussed in details in the paper.
Journal of Robotic Systems, 2004
IEEE Journal of Solid-State Circuits, 2000
This paper presents a silicon-on-insulator (SOI) fully integrated RF power amplifier for single-c... more This paper presents a silicon-on-insulator (SOI) fully integrated RF power amplifier for single-chip wireless transceiver applications. The integrated power amplifier (IPA) operates at 900 MHz, and is designed and fabricated using a 1.5-m SOI LDMOS/CMOS/BJT technology. This technology is suitable for the complete integration of the front-end circuits with the baseband circuits for low-cost low-power high-volume production of single-chip transceivers. The IPA is a two-stage Class E power amplifier. It is fabricated along with the on-chip input and output matching networks. Thus, no external components are needed. At 900 MHz and with a 5-V supply, the power amplifier delivers 23-dBm output power to a 50load with 16-dB gain and 49% power-added efficiency.
Correlation of reactivity and properties of wood chars
Fuel, 1994
Abstract Correlations between the reactivity and electrical, structural and physical properties o... more Abstract Correlations between the reactivity and electrical, structural and physical properties of acacia and eucalyptus wood chars were determined. As these properties require much less time to measure than the reactivity does, they can be considered as an alternative to reactivity testing currently used for quality control.
Fabrication and characterization of high performance cathode supported small-scale SOFC for intermediate temperature operation
Electrochemistry Communications, 2008
ABSTRACT
Chemical Engineering & Technology, 2010
Dimethyl ether (DME) has received increasing interest as a potential substitute for diesel and li... more Dimethyl ether (DME) has received increasing interest as a potential substitute for diesel and liquefied petroleum gas. The production of DME from syngas is exothermic in nature overall, and has a narrow operational window in fixed-bed reactors. Consequently, fluidized-bed reactors, which have high heat and mass transfer efficiencies, are major current areas of investigation for DME production from syngas. In the present paper, the comprehensive reactor model proposed by Mahecha-Botero et al. [1] has been modified and employed to simulate DME synthesis in a fluidized-bed reactor. The modified model has been employed under various operating conditions to maximize CO conversion (X CO), DME productivity and DME selectivity with respect to methanol.
With an objective to enhance the existing Internet computing model, we are developing a general-p... more With an objective to enhance the existing Internet computing model, we are developing a general-purpose framework called Pervasive Information Community Organization (PICO). PICO deals with the creation of mission-oriented dynamic computing communities that perform tasks on behalf of users and devices autonomously. PICO's communities are made up of software agents called delegents(intelligent delegates). Community computing will enable provisioning of context-aware, locationaware, just-in-time services all the time everywhere. PICOenabled pervasive environments are expected to revolutionize the way Internet is employed, enhance quality of life and promote user-centric applications. In this paper we discuss formal models for delegents, delegent communities and the methodology for creation and destruction of communities.
Data acquired from multiple sensors can be fused at a variety of levels: the raw data level, the ... more Data acquired from multiple sensors can be fused at a variety of levels: the raw data level, the feature level, or the decision level. An additional dimension to the fusion process is temporal fusion, which is fusion of data or information acquired from multiple sensors of different types over a period of time. We propose a technique that can perform such temporal fusion. The core of the system is the fusion processor that uses Dynamic Time Warping (DTW) to perform temporal fusion. We evaluate the performance of the fusion system on two real world datasets: 1) accelerometer data acquired from performing two hand gestures and 2) NOKIA's benchmark dataset for context recognition. The results of the first experiment show that the system can perform temporal fusion on both raw data and features derived from the raw data. The system can also recognize the same class of multisensor temporal sequences even though they have different lengths e.g. the same human gestures can be performed at different speeds. In addition, the fusion processor can infer decisions from the temporal sequences fast and accurately. The results of the second experiment show that the system can perform fusion on temporal sequences that have large dimensions and are a mix of discrete and continuous variables. The proposed fusion system achieved good classification rates efficiently in both experiments
2017 IEEE International Conference on Smart Grid and Smart Cities (ICSGSC)
with high power coefficient, yet they are poor performers in low wind speed regime. As a potentia... more with high power coefficient, yet they are poor performers in low wind speed regime. As a potential solution to improve the low wind speed performance, a notched airfoil (KF-N-21) was incorporated into straight bladed Darrieus rotor and experimentally compared with conventional NACA0021 rotor from the earlier study. The experimental results displays the superior performance of KF-N-21 in the low Reynolds number without degrading the performance at the high Reynolds number .This paper presents the computational validation of previous experimental investigation and to numerically explore the two dimensional unsteady flow field over the notched airfoil in comparioson with NACA 0021 .A detailed flow characteristics are presented in terms of velocity and pressure distribution by capturing the vortex bubble formation .The simulation results shows a good agreement with the experimental data endorsing the performance of KF-N-21 airfoil for a wide range of Reynolds number.
To understand complex living system an effort has made by mechanical engineers and dentists to de... more To understand complex living system an effort has made by mechanical engineers and dentists to deliver prompt products and services to patients concerned about their aesthetic look. Since two decades various bracket systems have designed involving techniques like milling, injection molding which are technically not flexible for the customized dental product development. The aim of this paper to design, develop a customized system which is economical and mainly emphasizes the expertise design and integration of engineering and dental fields. A custom made selfadjustable lingual bracket and customized implants are designed and developed using computer aided design (CAD) and rapid prototyping technology (RPT) to improve the smiles and to overcome the difficulties associated with conventional ones. Lengthy orthodontic treatment usually not accepted by the patients because the patient compliance is lost. Patient-s compliance can be improved by facilitating faster tooth movements by desig...
while the substrate traverses under the nozzle carrier. The interaction between the jets and the ... more while the substrate traverses under the nozzle carrier. The interaction between the jets and the film layer is a complex phenomenon. The moving substrate poses further complexity. This work addresses the numerical modeling of the film removal process by using Computational Fluid Dynamics (CFD). The Volume Of Fluid (VOF) method, which is an interface tracking ap proach by acknowledging the presence of water, air and viscous layer, is used for multiphase modeling. Ro tary impingement is achieved by implementing an inlet condition which transforms the jet by a time dependent rotational tensor. The rough substrate is geometrically modeled and the viscous layer is resolved by employing a fine grid. Arbitrarily Mesh Interface (AMI) between the substrate and the jet regions enables the movement of the substrate with a certain velocity in perpendicular direction of impingement. The model en ables parametric analysis to study the effect of standoff distance, viscosity of the film layer, subs...
Sun International Journal of Engineering and Basic Sciences, 2018
Data Mining is one of the most motivating area of research that is become increasingly popular in... more Data Mining is one of the most motivating area of research that is become increasingly popular in health organization. Data Mining plays an important part to uncover new patterns in medicinal services association which thusly accommodating for all the parties associated with this field. This project intend to build a diagnostic model of the various diseases based on the symptoms by using Data Mining technique such as classification in health domain. In this project, we are going to use algorithms like Decision Tree, Naive bayes that can be utilized for health care diagnosis. Performances of the classifiers are compared to each other to find out highest accuracy. This also helps us to find out persons who are affected by the infection. The test information is completed utilizing some benchmark information.
Journal of Robotics and Mechanical Engineering Research, 2019
Product Marketing Management (PMM) is a key role in every manufacturing industry to enhance their... more Product Marketing Management (PMM) is a key role in every manufacturing industry to enhance their profit and business. The PMM can also impact on the market share of the organization. In this paper, an empirical study was carried out to understand the role of PMM in market share elevation. The fast growing top five smartphone brandssuch as Huawei, Xiaomi, Samsung, Vivo, and Oppohave been considered in the current investigation. The quarter wise market share percentage of these manufacturesfrom2016 to 2018. Consumers are becoming increasingly dependent on smartphones technology. Marketers are searching for ways to grasp opportunities stemming from the extraordinary mobile presentations and usage patterns. Product marketing strategies have been studied and the variation of market share during last three years datawas analysed. This study revels marketingstrategiesfor the effective of PMM to elevate the market shares. Finally,identified marketing strategies have been compared and validated to observe the variation inthe market shares.
Journal of Robotics and Mechanical Engineering Research, 2019
Indian agriculture sector is poised to take big leap with the Digital India program. Mobile appli... more Indian agriculture sector is poised to take big leap with the Digital India program. Mobile applications like KisanSuvidha, IFFCOKissan Agriculture, RML Farmer-KrishiMitr, PusaKrishi, AgriApp, KrishiGyan, Crop Insurance, AgriMarket and WhatsApp have shown positive impact. Recently government of India has launched eNam (e-National Agriculture Market) Platform for transparent sale transaction and price delivery. This article provides a detailed review of the available Agriculture Information system and how these applications have transformed agriculture scenario in India. The topic includes potential of technologies in modernizing agriculture within the Indian village boundaries. This investigation further performs feasibility study of Agriculture Information System. The main focus is to identify gap and suggest design typology for future Agriculture Information System.
Design methodology and criteria to configure sprue bush for enhancing functionality is systematic... more Design methodology and criteria to configure sprue bush for enhancing functionality is systematically compiled from plastic injection moulding machine perspective. Sprue conduit’s sensitivity to moulding objectives are quantitatively ghettoised as expansion ratio on the basis of ubiquitous empirical relationships. This generic, simple, inexpensive preventive criterion enables sprue bush conduit geometry design to exemplifying the melt injection specifically for a particular
RTA-Driven Intra-Die Variations in Stage Delay, and Parametric Sensitivities for 65nm Technology
2006 Symposium on VLSI Technology, 2006. Digest of Technical Papers.
We report, for the first time, a detailed study of intra-die variation (IDV) of CMOS inverter del... more We report, for the first time, a detailed study of intra-die variation (IDV) of CMOS inverter delay for the 65nm technology, driven by mm-scale variations of rapid thermal annealing (RTA). We find that variation in VT and REXT accounts for most of the IDV in delay and leakage and is modulated by lamp RTA ramp rate. We show a good
Reconfigurable distributed fault tolerant routing algorithm for on-chip networks
2013 IEEE International Symposium on Defect and Fault Tolerance in VLSI and Nanotechnology Systems (DFTS), 2013
ABSTRACT Network on chip (NoC) is emerging as a promising solution to overcome bus bottleneck for... more ABSTRACT Network on chip (NoC) is emerging as a promising solution to overcome bus bottleneck for future multi core chips. Fault tolerance and quality of service issues are potential challenges for NoCs. In this paper, we propose a cost-effective fault tolerant routing algorithm for irregular 2D mesh without use of routing tables. We use one hop visibility of Logic Based Distributed Routing (LBDR) to eliminate routing tables. This algorithm handles one or multiple single link faults within 2D mesh and uses reconfigured paths (minimal and/or non-minimal), if links fail. We use turn model based approach to avoid deadlocks. Since our method does not require virtual channels to achieve deadlock freedom, it remains area and power efficient.
Advances in Agroforestry, 2011
Aims and Scope Agroforestry, the purposeful growing of trees and crops in interacting combination... more Aims and Scope Agroforestry, the purposeful growing of trees and crops in interacting combinations, began to attain prominence in the late 1970s, when the international scientific community embraced its potentials in the tropics and recognized it as a practice in search of science. During the 1990s, the relevance of agroforestry for solving problems related to deterioration of family farms, increased soil erosion, surface and ground water pollution, and decreased biodiversity was recognized in the industrialized nations too. Thus, agroforestry is now receiving increasing attention as a sustainable land-management option the world over because of its ecological, economic, and social attributes. Consequently, the knowledge-base of agroforestry is being expanded at a rapid rate as illustrated by the increasing number and quality of scientific publications of various forms on different aspects of agroforestry. Making full and efficient use of this upsurge in scientific agroforestry is both a challenge and an opportunity to the agroforestry scientific community. In order to help prepare themselves better for facing the challenge and seizing the opportunity, agroforestry scientists need access to synthesized information on multi-dimensional aspects of scientific agroforesty. The aim of this new book-series, Advances in Agroforestry, is to offer state-of-the art synthesis of research results and evaluations relating to different aspects of agroforestry. Its scope is broad enough to encompass any and all aspects of agroforestry research and development. Contributions are welcome as well as solicited from competent authors on any aspect of agroforestry. Volumes in the series will consist of reference books, subject-specific monographs, peer-reviewed publications out of conferences, comprehensive evaluations of specific projects, and other book-length compilations of scientific and professional merit and relevance to the science and practice of agroforestry worldwide.
Wear, 2010
Thermal localisation (TL) phenomenon is defined as localisation of high temperature as consequenc... more Thermal localisation (TL) phenomenon is defined as localisation of high temperature as consequences of high strain gradients developed in the bulk of materials of a tribo-pair. High extent of localisation of thermal gradient is rated as a non-desirable parameter for a good friction material because it affects both the surfaces leading to thermal crazing, cracks and fatigue, especially of the disc apart from affecting wear. In the present work, four composites with identical parent composition (containing ingredients of all the four categories) but differing in the average particle size of natural graphite (21, 41, 71 and 137 m) were developed and evaluated on specially designed tribometer for enabling the studies of TL phenomenon. Two series of testing modes viz. inertia mode and rpm-mode were selected to bring out the correlation of selected graphite and their tendency to produce hot bands, hot spots and related phenomena on the counter-face. Overall, it was observed that the composites with lower particle size of graphite rendered better results than that with higher particle size. The study of hot-spot appearance and the TL behavior of tribo-pair are discussed in details in the paper.
Journal of Robotic Systems, 2004
IEEE Journal of Solid-State Circuits, 2000
This paper presents a silicon-on-insulator (SOI) fully integrated RF power amplifier for single-c... more This paper presents a silicon-on-insulator (SOI) fully integrated RF power amplifier for single-chip wireless transceiver applications. The integrated power amplifier (IPA) operates at 900 MHz, and is designed and fabricated using a 1.5-m SOI LDMOS/CMOS/BJT technology. This technology is suitable for the complete integration of the front-end circuits with the baseband circuits for low-cost low-power high-volume production of single-chip transceivers. The IPA is a two-stage Class E power amplifier. It is fabricated along with the on-chip input and output matching networks. Thus, no external components are needed. At 900 MHz and with a 5-V supply, the power amplifier delivers 23-dBm output power to a 50load with 16-dB gain and 49% power-added efficiency.
Correlation of reactivity and properties of wood chars
Fuel, 1994
Abstract Correlations between the reactivity and electrical, structural and physical properties o... more Abstract Correlations between the reactivity and electrical, structural and physical properties of acacia and eucalyptus wood chars were determined. As these properties require much less time to measure than the reactivity does, they can be considered as an alternative to reactivity testing currently used for quality control.
Fabrication and characterization of high performance cathode supported small-scale SOFC for intermediate temperature operation
Electrochemistry Communications, 2008
ABSTRACT
Chemical Engineering & Technology, 2010
Dimethyl ether (DME) has received increasing interest as a potential substitute for diesel and li... more Dimethyl ether (DME) has received increasing interest as a potential substitute for diesel and liquefied petroleum gas. The production of DME from syngas is exothermic in nature overall, and has a narrow operational window in fixed-bed reactors. Consequently, fluidized-bed reactors, which have high heat and mass transfer efficiencies, are major current areas of investigation for DME production from syngas. In the present paper, the comprehensive reactor model proposed by Mahecha-Botero et al. [1] has been modified and employed to simulate DME synthesis in a fluidized-bed reactor. The modified model has been employed under various operating conditions to maximize CO conversion (X CO), DME productivity and DME selectivity with respect to methanol.
With an objective to enhance the existing Internet computing model, we are developing a general-p... more With an objective to enhance the existing Internet computing model, we are developing a general-purpose framework called Pervasive Information Community Organization (PICO). PICO deals with the creation of mission-oriented dynamic computing communities that perform tasks on behalf of users and devices autonomously. PICO's communities are made up of software agents called delegents(intelligent delegates). Community computing will enable provisioning of context-aware, locationaware, just-in-time services all the time everywhere. PICOenabled pervasive environments are expected to revolutionize the way Internet is employed, enhance quality of life and promote user-centric applications. In this paper we discuss formal models for delegents, delegent communities and the methodology for creation and destruction of communities.
Data acquired from multiple sensors can be fused at a variety of levels: the raw data level, the ... more Data acquired from multiple sensors can be fused at a variety of levels: the raw data level, the feature level, or the decision level. An additional dimension to the fusion process is temporal fusion, which is fusion of data or information acquired from multiple sensors of different types over a period of time. We propose a technique that can perform such temporal fusion. The core of the system is the fusion processor that uses Dynamic Time Warping (DTW) to perform temporal fusion. We evaluate the performance of the fusion system on two real world datasets: 1) accelerometer data acquired from performing two hand gestures and 2) NOKIA's benchmark dataset for context recognition. The results of the first experiment show that the system can perform temporal fusion on both raw data and features derived from the raw data. The system can also recognize the same class of multisensor temporal sequences even though they have different lengths e.g. the same human gestures can be performed at different speeds. In addition, the fusion processor can infer decisions from the temporal sequences fast and accurately. The results of the second experiment show that the system can perform fusion on temporal sequences that have large dimensions and are a mix of discrete and continuous variables. The proposed fusion system achieved good classification rates efficiently in both experiments