237 research outputs found
Computational intelligent sensor-rank consolidation approach for Industrial Internet of Things (IIoT).
Continues field monitoring and searching sensor data remains an imminent element emphasizes the influence of the Internet of Things (IoT). Most of the existing systems are concede spatial coordinates or semantic keywords to retrieve the entail data, which are not comprehensive constraints because of sensor cohesion, unique localization haphazardness. To address this issue, we propose deep-learning-inspired sensor-rank consolidation (DLi-SRC) system that enables 3-set of algorithms. First, sensor cohesion algorithm based on Lyapunov approach to accelerate sensor stability. Second, sensor unique localization algorithm based on rank-inferior measurement index to avoid redundancy data and data loss. Third, a heuristic directive algorithm to improve entail data search efficiency, which returns appropriate ranked sensor results as per searching specifications. We examined thorough simulations to describe the DLi-SRC effectiveness. The outcomes reveal that our approach has significant performance gain, such as search efficiency, service quality, sensor existence rate enhancement by 91%, and sensor energy gain by 49% than benchmark standard approaches
Improving the Response Time of M-Learning and Cloud Computing Environments Using a Dominant Firefly Approach
© 2013 IEEE. Mobile learning (m-learning) is a relatively new technology that helps students learn and gain knowledge using the Internet and Cloud computing technologies. Cloud computing is one of the recent advancements in the computing field that makes Internet access easy to end users. Many Cloud services rely on Cloud users for mapping Cloud software using virtualization techniques. Usually, the Cloud users' requests from various terminals will cause heavy traffic or unbalanced loads at the Cloud data centers and associated Cloud servers. Thus, a Cloud load balancer that uses an efficient load balancing technique is needed in all the cloud servers. We propose a new meta-heuristic algorithm, named the dominant firefly algorithm, which optimizes load balancing of tasks among the multiple virtual machines in the Cloud server, thereby improving the response efficiency of Cloud servers that concomitantly enhances the accuracy of m-learning systems. Our methods and findings used to solve load imbalance issues in Cloud servers, which will enhance the experiences of m-learning users. Specifically, our findings such as Cloud-Structured Query Language (SQL), querying mechanism in mobile devices will ensure users receive their m-learning content without delay; additionally, our method will demonstrate that by applying an effective load balancing technique would improve the throughput and the response time in mobile and cloud environments
DAWM: cost-aware asset claim analysis approach on big data analytic computation model for cloud data centre.
The heterogeneous resource-required application tasks increase the cloud service provider (CSP) energy cost and revenue by providing demand resources. Enhancing CSP profit and preserving energy cost is a challenging task. Most of the existing approaches consider task deadline violation rate rather than performance cost and server size ratio during profit estimation, which impacts CSP revenue and causes high service cost. To address this issue, we develop two algorithms for profit maximization and adequate service reliability. First, a belief propagation-influenced cost-aware asset scheduling approach is derived based on the data analytic weight measurement (DAWM) model for effective performance and server size optimization. Second, the multiobjective heuristic user service demand (MHUSD) approach is formulated based on the CPS profit estimation model and the user service demand (USD) model with dynamic acyclic graph (DAG) phenomena for adequate service reliability. The DAWM model classifies prominent servers to preserve the server resource usage and cost during an effective resource slicing process by considering each machine execution factor (remaining energy, energy and service cost, workload execution rate, service deadline violation rate, cloud server configuration (CSC), service requirement rate, and service level agreement violation (SLAV) penalty rate). The MHUSD algorithm measures the user demand service rate and cost based on the USD and CSP profit estimation models by considering service demand weight, tenant cost, and energy cost. The simulation results show that the proposed system has accomplished the average revenue gain of 35%, cost of 51%, and profit of 39% than the state-of-the-art approaches
Linear Weighted Regression and Energy-Aware Greedy Scheduling for Heterogeneous Big Data
Data are presently being produced at an increased speed in different formats, which complicates the design, processing, and evaluation of the data. The MapReduce algorithm is a distributed file system that is used for big data parallel processing. Current implementations of MapReduce assist in data locality along with robustness. In this study, a linear weighted regression and energy-aware greedy scheduling (LWR-EGS) method were combined to handle big data. The LWR-EGS method initially selects tasks for an assignment and then selects the best available machine to identify an optimal solution. With this objective, first, the problem was modeled as an integer linear weighted regression program to choose tasks for the assignment. Then, the best available machines were selected to find the optimal solution. In this manner, the optimization of resources is said to have taken place. Then, an energy efficiency-aware greedy scheduling algorithm was presented to select a position for each task to minimize the total energy consumption of the MapReduce job for big data applications in heterogeneous environments without a significant performance loss. To evaluate the performance, the LWR-EGS method was compared with two related approaches via MapReduce. The experimental results showed that the LWR-EGS method effectively reduced the total energy consumption without producing large scheduling overheads. Moreover, the method also reduced the execution time when compared to state-of-the-art methods. The LWR-EGS method reduced the energy consumption, average processing time, and scheduling overhead by 16%, 20%, and 22%, respectively, compared to existing methods
Potential of farm level rainwater harvesting for enhancing resilience of dryland farming systems in India
The farm level rainwater harvesting which has huge potential for enhancing dryland farming systems resilience is yet to be fully harnessed. Here we have assessed the performance of small rainwater harvesting structures in different five rainfed agro-ecologies in India. Further we have taken a case of the state of Telangana in India and mapped the potential for context specific scaling up of rainwater harvesting through farm ponds at mandal (sub-district) level. The study uses farm level primary data on investments, water use, yield impacts and additional net returns due to farm ponds; perceptions of multiple stakeholders and results of experimental on-farm trials on use of harvested rainwater. The ex-ante study to assess the potential for scaling up farm ponds in the whole Telangana state uses eight years district level yield data of major crops from 2007 to 2015. The technical coefficients representing impact of supplemental/lifesaving irrigation through farm ponds were arrived at based on our above case study in five regions, published literature and stakeholders consultations. Accounting for differential benefits of farm ponds under different rainfall situations, we have used the average rate of additional net returns due to farm pond over the period from 2008 to 2105 considering normal, mild drought, drought and excess rainfall years. Stakeholders’ consultation with participation from each district of Telangana state was organized to understand the perceptions and preferences of farmers in different regions of the state. The farmers cultivating less than 2 hectares of land were reluctant to adopt the farm ponds, hence only 5% of such landholders were assumed to be the potential adopters of rainwater harvesting structures.
The harvested rainwater in five different regions representing Tamilnadu, Andhra Pradesh, Karnataka, Maharashtra and Rajasthan was used for supplemental irrigation and recharging open-wells. In many instances, the rainwater harvesting through farm ponds significantly increased crop yields and had a multiplier effect on farm income under rainfed situation, but in some cases it was perceived by farmers as a waste of resources. Increased access to cash and fodder triggered an increase in income from livestock in some cases. The supplemental irrigation across case studies in the different regions resulted in a significant increase in crop yields (12 to 72 %) and cropping intensity as well as diversification into fruits and fodder production and in few cases aquaculture. The additional net returns due to farm ponds were estimated to be between US$ 120 and 320 structure-1 annum-1. The ex-ante analysis at mandal level in Telangana state indicated that one-fifth of the mandals in the state have potential to create more than 500 farm ponds in each to enhance farming systems resilience and income. We also mapped those one third of the mandals which do not need any farm pond to be created. A few mandals have very high potential with a scope for constructing more than 1000 farm ponds in each. The functional analysis highlighted the technical, capital, social and extension related determinants of adoption of farm ponds. Ex-post impact assessment of farm pond in different regions of India establishes their usefulness and the ex-ante analysis maps out its potential at mandal level in the Telangana state would contribute in prioritizing and better targeting of investments for scaling up of farm level rainwater harvesting in the rainfed regions
Quiescience as a mechanism for cyclical hypoxia and acidosis
Tumour tissue characteristically experiences fluctuations in substrate supply. This unstable microenvironment drives constitutive metabolic changes within cellular populations and, ultimately, leads to a more aggressive phenotype. Previously, variations in substrate levels were assumed to occur through oscillations in the hæmodynamics of nearby and distant blood vessels. In this paper we examine an alternative hypothesis, that cycles of metabolite concentrations are also driven by cycles of cellular quiescence and proliferation. Using a mathematical modelling approach, we show that the interdependence between cell cycle and the microenvironment will induce typical cycles with the period of order hours in tumour acidity and oxygenation. As a corollary, this means that the standard assumption of metabolites entering diffusive equilibrium around the tumour is not valid; instead temporal dynamics must be considered
Biotransformation of cinnamyl alcohol to rosavins by non-transformed wild type and hairy root cultures of Rhodiola kirilowii
Computer simulation of glioma growth and morphology
Despite major advances in the study of glioma, the quantitative links between intra-tumor molecular/cellular properties, clinically observable properties such as morphology, and critical tumor behaviors such as growth and invasiveness remain unclear, hampering more effective coupling of tumor physical characteristics with implications for prognosis and therapy. Although molecular biology, histopathology, and radiological imaging are employed in this endeavor, studies are severely challenged by the multitude of different physical scales involved in tumor growth, i.e., from molecular nanoscale to cell microscale and finally to tissue centimeter scale. Consequently, it is often difficult to determine the underlying dynamics across dimensions. New techniques are needed to tackle these issues. Here, we address this multi-scalar problem by employing a novel predictive three-dimensional mathematical and computational model based on first-principle equations (conservation laws of physics) that describe mathematically the diffusion of cell substrates and other processes determining tumor mass growth and invasion. The model uses conserved variables to represent known determinants of glioma behavior, e.g., cell density and oxygen concentration, as well as biological functional relationships and parameters linking phenomena at different scales whose specific forms and values are hypothesized and calculated based on in vitro and in vivo experiments and from histopathology of tissue specimens from human gliomas. This model enables correlation of glioma morphology to tumor growth by quantifying interdependence of tumor mass on the microenvironment (e.g., hypoxia, tissue disruption) and on the cellular phenotypes (e.g., mitosis and apoptosis rates, cell adhesion strength). Once functional relationships between variables and associated parameter values have been informed, e.g., from histopathology or intra-operative analysis, this model can be used for disease diagnosis/prognosis, hypothesis testing, and to guide surgery and therapy. In particular, this tool identifies and quantifies the effects of vascularization and other cell-scale glioma morphological characteristics as predictors of tumor-scale growth and invasion
Endotoxin-induced changes in expression of cyclooxygenase isoforms in the lamellar tissue of extracorporeally haemoperfused equine limbs
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