496 research outputs found

    A lightweight secure adaptive approach for internet-of-medical-things healthcare applications in edge-cloud-based networks

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    Mobile-cloud-based healthcare applications are increasingly growing in practice. For instance, healthcare, transport, and shopping applications are designed on the basis of the mobile cloud. For executing mobile-cloud applications, offloading and scheduling are fundamental mechanisms. However, mobile healthcare workflow applications with these methods are widely ignored, demanding applications in various aspects for healthcare monitoring, live healthcare service, and biomedical firms. However, these offloading and scheduling schemes do not consider the workflow applications' execution in their models. This paper develops a lightweight secure efficient offloading scheduling (LSEOS) metaheuristic model. LSEOS consists of light weight, and secure offloading and scheduling methods whose execution offloading delay is less than that of existing methods. The objective of LSEOS is to run workflow applications on other nodes and minimize the delay and security risk in the system. The metaheuristic LSEOS consists of the following components: adaptive deadlines, sorting, and scheduling with neighborhood search schemes. Compared to current strategies for delay and security validation in a model, computational results revealed that the LSEOS outperformed all available offloading and scheduling methods for process applications by 10% security ratio and by 29% regarding delays

    Role of Helpline Services in Technology Dissemination

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    ABSTRACT Communication is the web that holds a society together and it is a collection of small and relatively isolated facilitate dissemination of agricultural technology". Keeping in view the problems in agriculture, an investigation on 'Role of helpline services in technology dissemination' was conducted in Uttar Pradesh with following objectives: i) to study the level of use of helpline services; ii) to study the role of private and public interventions in helpline services; and iii) to find out the constraints and work out strategy for making helpline services effective for farmers

    Origin of spin gapless semiconductor behavior in CoFeCrGa: Theory and Experiment

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    Despite a plethora of materials suggested for spintronic applications, a new class of materials has emerged, namely spin gapless semiconductors (SGS), which offers potentially more advantageous properties than existing ones. These magnetic semiconductors exhibit a finite band gap for one spin channel and a closed gap for the other. Here, supported by electronic-structure calculations, we report evidence of SGS behavior in equiatomic quaternary CoFeCrGa, having a cubic Heusler (prototype LiMgPdSn) structure but exhibiting chemical disorder (DO3 structure). CoFeCrGa is found to transform from SGS to half-metallic phase under pressure, which is attributed to unique electronic-structure features. The saturation magnetization (MS) obtained at 8K agrees with the Slater-Pauling rule and the Curie temperature (TC) is found to exceed 400K. Carrier concentration (up to 250K) and electrical conductivity are observed to be nearly temperature independent, prerequisites for SGS. The anomalous Hall coefficient is estimated to be 185S/cm at 5K. Considering the SGS properties and high TC, this material appears to be promising for spintronic applications

    Improving lentil (Lens culinaris) productivity and profitability through farmer participatory action research in India

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    Application of technology for on-farm productivity enhancement is the major intervention besides meeting the other requirements like input supply, marketing, biotic and abiotic stresses. Further, to what extent farmers are involved in technology delivery process is another dimension of technology application. Farmers may be either the passive receiver of any technology of information, or they be be the active partners in planning, implementing and evaluating the interventions. In the first phase of the study, documentation and characterization of lentil based cropping systems, variety use pattern and existing yield level; comparison of lentil (Lens culinaris Medik.) and non-lentil based cropping systems, constraint analysis and identification of need based and situation specific potential solutions were done. In the second phase of the study, the suggested solutions were translated and prioritized into meaningful interventions in the form of lentil variety demonstration; assessment of different technological components like weed management,fertilizer  management, irrigation management and disease management in integrated crop management (ICM) mode and implemented for two cropping seasons of 2010-11 to 2011-12. Action research was, therefore, conducted among 965 lentil growers (389 ha area) selected from 35 districts across four states of India during 2010-11 to 2011-12. Yield gap II (37.65 - 54.39%) was found more prominent than the research gap or yield gap I (15.0 - 22.5 %) in selected states. The states of Uttar Pradesh (716 kg/ha), Bihar (629 kg/ha), Madhya Pradesh (619 kg/ha) and West Bengal (604 kg/ha) showed higher yield gap in lentil. Distinct lentil based existing cropping system and very poor level of yields was observed (as low as 300 kg/ha in Madhya Pradesh to 932 kg/ha in some parts of Uttar Pradesh). Lentil based cropping systems (B: C ratio - 3.11-3.77) was economically efficient than non-lentil based cropping system (B:C ratio - 1.17 to 1.72). Assessment of improved lentil varieties and integrated crop management technologies resulted in higher gain both in yield (57.8%) and net return (87.8%), followed by improved variety (50.4% increase in yield and 82.2% higher net return) over the farmers' practices. Other technological components like weed management, fertilizer management, irrigation management and disease management contributed increase in yield (20-29%) and net returns (17-37%) over farmers' practices

    Potent blockchain-rnabled socket RPC Internet of Healthcare Things (IoHT) framework for medical enterprises

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    Present-day intelligent healthcare applications offer digital healthcare services to users in a distributed manner. The Internet of Healthcare Things (IoHT) is the mechanism of the Internet of Things (IoT) found in different healthcare applications, with devices that are attached to external fog cloud networks. Using different mobile applications connecting to cloud computing, the applications of the IoHT are remote healthcare monitoring systems, high blood pressure monitoring, online medical counseling, and others. These applications are designed based on a client–server architecture based on various standards such as the common object request broker (CORBA), a service-oriented architecture (SOA), remote method invocation (RMI), and others. However, these applications do not directly support the many healthcare nodes and blockchain technology in the current standard. Thus, this study devises a potent blockchain-enabled socket RPC IoHT framework for medical enterprises (e.g., healthcare applications). The goal is to minimize service costs, blockchain security costs, and data storage costs in distributed mobile cloud networks. Simulation results show that the proposed blockchain-enabled socket RPC minimized the service cost by 40%, the blockchain cost by 49%, and the storage cost by 23% for healthcare applications

    Continental extension of northern Gondwana margin in the Eastern Himalaya: Constraints from geochemistry and U–Pb zircon ages of mafic intrusives in the Siang window, Arunachal Himalaya, India

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    We report new U–Pb zircon age and whole-rock geochemical data from the Pangin mafic intrusive rocks of the Siang window, eastern Himalayas. These mafic rocks are medium to coarse-grained gabbros, consisting mainly of plagioclase and clinopyroxene with accessory phases (hornblende ++ Fe–Ti oxides) that retain granular and interlocking texture. Geochemically, they display enriched-mid oceanic ridge basalt (E-MORB) affinity characterized by moderate to slightly fractionated REE patterns marked by (La/Yb)N=2.653.99(\mathrm{La}/\mathrm{Yb})_{\mathrm{N}} = 2.65-3.99. Their geochemical characteristics suggest that the parental magmas of these rocks were formed by medium to higher degrees (∼12–28%) of partial melting similar to that of the asthenospheric mantle in the garnet-spinel transition zone. Magmatic zircons from two gabbros yield U–Pb ages of 521.50 \sim 2.53 Ma and 568 ±{\pm } 2 Ma. This new age reveals two pulses of Late Neoproterozoic and Early Cambrian mafic magmatism that are inconsistent with the temporal distribution of Paleozoic magmatism in the Siang window of the Eastern Himalayas. However, based on the results of this study and the correlation of continental extensional mafic magmatism in the Northwest Himalaya, we suggest that investigated mafic intrusive rocks might have been generated in an extensional tectonic environment during the long-lasting Pan-African orogenic cycle of the late Neoproterozoic to early Cambrian which ended with the formation of the Gondwana supercontinent

    Continental extension of northern Gondwana margin in the Eastern Himalaya: Constraints from geochemistry and U–Pb zircon ages of mafic intrusives in the Siang window, Arunachal Himalaya, India

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    We report new U–Pb zircon age and whole-rock geochemical data from the Pangin mafic intrusive rocks of the Siang window, eastern Himalayas. These mafic rocks are medium to coarse-grained gabbros, consisting mainly of plagioclase and clinopyroxene with accessory phases (hornblende ++ Fe–Ti oxides) that retain granular and interlocking texture. Geochemically, they display enriched-mid oceanic ridge basalt (E-MORB) affinity characterized by moderate to slightly fractionated REE patterns marked by (La/Yb)N=2.653.99(\mathrm{La}/\mathrm{Yb})_{\mathrm{N}} = 2.65-3.99. Their geochemical characteristics suggest that the parental magmas of these rocks were formed by medium to higher degrees (∼12–28%) of partial melting similar to that of the asthenospheric mantle in the garnet-spinel transition zone. Magmatic zircons from two gabbros yield U–Pb ages of 521.50 \sim 2.53 Ma and 568 ±{\pm } 2 Ma. This new age reveals two pulses of Late Neoproterozoic and Early Cambrian mafic magmatism that are inconsistent with the temporal distribution of Paleozoic magmatism in the Siang window of the Eastern Himalayas. However, based on the results of this study and the correlation of continental extensional mafic magmatism in the Northwest Himalaya, we suggest that investigated mafic intrusive rocks might have been generated in an extensional tectonic environment during the long-lasting Pan-African orogenic cycle of the late Neoproterozoic to early Cambrian which ended with the formation of the Gondwana supercontinent
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