The purpose of this research was to develop a power consumer service support system, a case study of the Provincial Electricity Authority, Chumphon Province. By applying the ITIL version 3 operating framework to be ap...
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Efficient target localization in Wireless sensor network (WSN) relies significantly on the Medium access control (MAC) it implements. TDMA MAC protocol is customarily used in these applications. But it only has good p...
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Efficient target localization in Wireless sensor network (WSN) relies significantly on the Medium access control (MAC) it implements. TDMA MAC protocol is customarily used in these applications. But it only has good performance in motionless target detection, and can't cope with target-tracking detection. In this paper, a Target-tracking MAC (TT-MAC) protocol is proposed for target-tracking detection in target localization WSN. In this protocol, an energy-based clustering technique is used to achieve target-tracking detection, a sleeping mechanism is proposed for energy conservation, and a tight scheduling mechanism is proposed to reduce the latency. The protocol is compared with the cluster-based MAC protocol on Mica2 platform, and shows its superiority in energy and latency.
Wind turbine blades have been constantly increasing since wind energy becomes a popular renewable energy source to generate electricity. Therefore, the wind sector requires a more efficient and representative characte...
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Wind turbine blades have been constantly increasing since wind energy becomes a popular renewable energy source to generate electricity. Therefore, the wind sector requires a more efficient and representative characterization of vertical wind speed profiles to assess the potential for a wind power plant site. This paper proposes an alternative characterization of vertical wind speed profiles based on Ward's agglomerative clustering algorithm, including both wind speed module and direction data. This approach gives a more accurate incoming wind speed variation around the rotor swept area, and subsequently, provides a more realistic and complete wind speed vector characterization for vertical profiles. Real wind database collected for 2018 in the Forschungsplattformen in Nordund Ostsee(FINO) research platform is used to assess the methodology. A preliminary pre-processing stage is proposed to select the appropriated number of heights and remove missing or incomplete data. Finally, two locations and four heights are selected, and 561588 wind data are characterized. Results and discussion are also included in this paper. The methodology can be applied to other wind database and locations to characterize vertical wind speed profiles and identify the most likely wind data vector patterns.
The purpose of this research was to develop a device that would facilitate visually impaired people in the use of lidded bins. And reduce the risk of spreading COVID-19 and other pathogens that may be contaminated wit...
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In relativistic heavy-ion collisions, the longitudinal fluctuations of the fireball density caused, e.g., by baryon stopping fluctuations result in event-by-event modifications of the shape of the proton rapidity dens...
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News image captioning aims to generate captions or descriptions for news images automatically, serving as draft captions for creating news image captions manually. News image captions are different from generic captio...
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Free Space Optical (FSO) communication systems are used to transmit high data rates over short distances through the atmosphere. However, the performance of FSO communication links can be severely impacted by atmosphe...
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Free Space Optical (FSO) communication systems are used to transmit high data rates over short distances through the atmosphere. However, the performance of FSO communication links can be severely impacted by atmospheric conditions, such as fog, rain, and atmospheric turbulence. These conditions cause temporary and spatial changes in light intensity, which can lead to signal degradation and disruption. To ensure reliable FSO communication, it is important to take into account the meteorological conditions of the location where the FSO communication link will be deployed. This will help in determining the expected level of link availability and identifying potential problems that could arise due to atmospheric conditions. For example, if a location is prone to fog or heavy rain, it may not be suitable for FSO communication link. One key factor in the design and operation of FSO communication links is the Geometrical Losses (GL), which refer to the loss of power due to the divergence of the laser beam as it propagates through the atmosphere. This can be minimized by increasing the diameter of the receiver aperture, which allows more of the laser beam to be collected and directed towards the *** this paper, the researchers used a Genetic Algorithm (GA) to minimize GLs in the FSO communication link. The GA is an optimization technique that mimics the process of natural selection to find the best solution to a problem. In this case, the GA was used to find the optimal diameter of the receiver aperture that would minimize GLs. The researchers used the optimum tool in MATLAB 2017 to implement the GA and found that after a certain number of iterations, the GLs remained constant. This was considered to be the optimal diameter of the receiver aperture.
A Binary Search Tree is expanded into a KD Tree to handle the multi-dimensional key searches. A discriminator makes the KD tree different from the BST. This discriminator will take branching decisions at every level b...
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A Binary Search Tree is expanded into a KD Tree to handle the multi-dimensional key searches. A discriminator makes the KD tree different from the BST. This discriminator will take branching decisions at every level based on the key search. It can handle multi-dimensional coordinate object searching. K-d trees enable O(klogn) lookup times for the k nearest points to some point x. This is extremely useful, especially in cases where an O(n) lookup time is intractable already. In this work, a kd tree has been created based on how a celestial body is positioned in relation to the sun. It aims at finding the minimum in a particular dimension, searching for a celestial body and its nearest neighbor.
The purpose of this research is to study and develop an alarm clock to help wake up at the set time. Without having to snooze the alarm and not be so sleepy that you have to go back to sleep again. to help reduce the ...
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Breast cancer is the most prevalent cancer among women and can be deadly, necessitating early detection to enhance patient outcomes and treatment effectiveness. Recently, Machine Learning (ML) techniques have shown po...
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ISBN:
(数字)9798331540012
ISBN:
(纸本)9798331540029
Breast cancer is the most prevalent cancer among women and can be deadly, necessitating early detection to enhance patient outcomes and treatment effectiveness. Recently, Machine Learning (ML) techniques have shown potential in medical diagnostics, especially in breast cancer screening. ML algorithms examine extensive medical databases, including patient records, to identify subtle patterns and anomalies indicative of cancer. These algorithms excel at recognizing intricate patterns that may be missed by human analysis. Thereby, increasing the precision of breast cancer diagnoses. By evaluating and analyzing medical data, ML algorithms can detect minute anomalies, facilitating early identification of potential cancer cases. A significant advantage of ML-based breast cancer detection is its capacity for continuous learning and adaptation. In this study, we utilized 34 classifiers and five feature selection methods on three datasets. The first dataset comprises 286 instances with 10 integer-type features. The second dataset includes 699 instances with 10 integer-type features, and the third dataset consists of 286 instances with 13 integer-type features. For Dataset 1, Filtered Classifier and J-48 yielded the best results, while the Bayesnet classifier performed best on Dataset 2. In Dataset 3, SimpleLogistic and LMT achieved the best outcomes. Regarding feature selection, the study showed that the GainRatioAttributeEval, InfoGainAttributeEval, and CorrelationAttributeEval techniques are the best among the feature selection methods tested in the study.
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