Showing 1,221 - 1,240 results of 1,446 for search 'average optimization problem', query time: 0.19s Refine Results
  1. 1221

    From digitized whole‐slide histology images to biomarker discovery: A protocol for handcrafted feature analysis in brain cancer pathology by Xuanjun Lu, Yawen Ying, Jing Chen, Zhiyang Chen, Yuxin Wu, Prateek Prasanna, Xin Chen, Mingli Jing, Zaiyi Liu, Cheng Lu

    Published 2025-06-01
    “…Among the 72 models combining nine feature selection methods and eight machine learning classifiers, the optimal model combination achieved discriminative performance with an average area under the curve (AUC) of 0.615 over 100 iterations under five‐fold cross‐validation. …”
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  2. 1222

    DLML-PC: an automated deep learning and metric learning approach for precise soybean pod classification and counting in intact plants by Yixin Guo, Jinchao Pan, Xueying Wang, Hong Deng, Hong Deng, Mingliang Yang, Mingliang Yang, Enliang Liu, Qingshan Chen, Qingshan Chen, Rongsheng Zhu, Rongsheng Zhu

    Published 2025-07-01
    “…After 200 epochs, the recognition results of various object detection algorithms were compared to obtain the optimal model. Among the algorithms, YOLOX exhibited the highest mean average precision (mAP) of 83.43% in accurately determining the counts of diverse pod categories within soybean plants. …”
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  3. 1223

    Quantitative Analysis of Be in Herderite by Electron Probe Microanalysis by Ze LIU, Zhenyu CHEN, Xiaodan CHEN, Wentan XU, Chunhua LIU, Zeying ZHU, Zhijian NIU, Chenhui ZHAO, Yunbiao ZHAO

    Published 2024-09-01
    “…Under these conditions, the average content of P2O5, BeO, CaO, F is43.23%, 15.39%, 33.89%, and 7.94%, respectively, and the standard error of BeO is 0.3%. …”
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  4. 1224

    Physical layer security of MIMO wireless systems with adaptive modulation by Hui LI, Guangqiu LI, Yancui LUO, Huizhi LIU

    Published 2023-07-01
    “…To solve the problems of low spectral efficiency and poor performance of physical layer security (PLS) in single-input single-output (SISO) wireless systems with adaptive modulation in the presence of an active eavesdropper, multiple-input multiple-output (MIMO) wireless systems with secure adaptive modulation (SAM) were proposed.The design idea was to improve the spectral efficiency of the main channel by antenna diversity technology, which used the transmit antenna selection (TAS) at the transmitter and the maximal ratio combining (MRC) at the legitimate receiver to improve the signal-to-noise ratio.Simultaneously, the PLS of the legitimate receiver was guaranteed by limiting the bit error rate of the active eavesdropper so that it could not demodulate the confidential information from the main channel.With the joint constraints of the average transmission power and PLS, the optimal switching thresholds and the analytical expressions of spectral efficiency and the eavesdropper’s average bit error rate of the SAM-MIMO systems were derived.Numerical and simulation results show that SAM systems using TAS/MRC technology can not only improve the spectral efficiency of the main channel, but also ensure the PLS against the active eavesdropper, compared with the SAM-SISO systems.…”
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  5. 1225

    The Algorithm of Treatment Tactics for Patients with Tumor Obstruction of Extrahepatic Bile Ducts by Dutka Ya.

    Published 2013-03-01
    “…Introduction. The problem of surgical treatment of patients with tumors of the extrahepatic bile ducts is one of the most important and complicated in the surgery of the hepatopancreatoduodenal zone and is of increasing interest to the researchers. …”
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  6. 1226

    Unravelling the benefits of thermal waters enhancing oral health: a pilot study by Sara Lopes, Susana Morgado, Ana T. P. C. Gomes, Pedro C. Lopes, Patrícia Couto, Maria J. Correia, Javier Flores-Fraile, Nélio Veiga

    Published 2024-12-01
    “…Abstract Background Oral health represents a public health problem due to its remarkable social impact and medical costs. …”
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  7. 1227

    Analisis Kinerja Intrusion Detection System Berbasis Algoritma Random Forest Menggunakan Dataset Unbalanced Honeynet BSSN by Kuni Inayah, Kalamullah Ramli

    Published 2024-08-01
    “…However, this IDS doesn’t work optimally to detect new types of attacks that have never happened before (zero-day). …”
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  8. 1228

    Sport sector as a part of public policy for elderly people in selected EU countries by Aleksandra Malgorzata Goldys

    Published 2022-03-01
    “…As: -       part of ideal model of high quality life of elderly people (“Healthy Ageing” approach) -       tool of achieving optimal health state -       treatment, healing method -       tool of social inclusion and wider activation goals for old people (average with age people are more likely to be excluded from different aspects of social life) The main data resources for the paper come from: official documents from EU levels from 2005 (to observe direction of change in role of sport in EU public policy) to 2015, WHO reports and polls results (from several years to see the trend), evaluations from sport projects directed to elderly people  - realized after 2010, reports from international projects dedicated to elderly people with physical activity as implementation tool and sport projects directed to elderly people (not necessarily exclusively). …”
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  9. 1229

    Research on fusion prediction model of wind speed, gas and dust concentration under wind flow control in fully-mechanized heading face by Xiaoyan GONG, Hao ZOU, Zhuangzhuang LIU, Long CHEN, Haoran FU, Yuheng SUN, Hao LI, Xinyu WANG, Huming NIU

    Published 2024-10-01
    “…In view of the problem that the traditional ventilation total amount control management mode of the fully mechanized heading face cannot carry out wind flow control according to the actual demand, which causes gas and dust accumulation and pollution hidden danger, the multi-source data fusion neural network prediction model of wind speed, gas and dust concentration under wind flow control is studied. …”
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  10. 1230

    THE RESULTS OF THE SURVEY OF OBSTETRICIAN-GYNECOLOGISTS AND ASSESSMENT OF THEIR LEVEL OF PREPAREDNESS ON THE ISSUES OF QUALITY OF MEDICAL CARE by K. V. Yaroslavskiy, N. G. Petrova

    Published 2018-03-01
    “…Moreover, only single studies are devoted to the analysis of this problem, including among obstetrician-gynecological specialists. …”
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  11. 1231

    Effects of Calcination Temperature and Sucrose Additive Amount on Properties of Simulated High Level Liquid Waste Calcinate by Cheng HE, Hua ZHANG, Zheng LI, Hui-lin SUN, Ke-qian ZHANG, Yang LI

    Published 2025-02-01
    “…In order to solve this problem, the research group conducted a study on the effects of sucrose additive amount and calcination temperature on the properties of calcined materials. …”
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  12. 1232

    Analysing Time Series of Land Subsidence in the West of Tehran Province (Shahriar Plain) and its Relation to Groundwater Discharge by InSAR Technique by Ramin Papi, ُSara Attarchi, Masoud Soleimani

    Published 2020-06-01
    “…The results also indicate that an average subsidence of 5 to 12 cm have been occurred per 1 meter drop in groundwater level. …”
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  13. 1233

    Machine vision-based detection of key traits in shiitake mushroom caps by Jiuxiao Zhao, Jiuxiao Zhao, Wengang Zheng, Wengang Zheng, Yibo Wei, Yibo Wei, Qian Zhao, Qian Zhao, Jing Dong, Jing Dong, Xin Zhang, Xin Zhang, Mingfei Wang, Mingfei Wang

    Published 2025-02-01
    “…This study puts forward a machine vision-based prediction method to solve the problem regarding the measurement of traits in shiitake mushroom caps during the shiitake mushroom breeding process. …”
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  14. 1234

    Design and analysis of spiral plating solution flow and rotating magnetic field device for electroplated diamond wire saw by Wei HUANG, Yanming HE, Jinbao XU, Zhenya SONG, Xiang HUANG, Yumeng SUN, Ximeng YU

    Published 2025-04-01
    “…The research focuses on solving three core problems: (1) the structural design of the spiral bath flow electroplating device and the optimization of flow rate and spiral speed of the spiral bath flow; (2) the structural design of the rotating magnetic field device and the optimization of rotation speed and magnetic field strength; (3) the optimal process parameters for electroplating diamond wire saws in the new composite field electroplating device, and the production of wire saws for silicon wafer cutting experiments.MethodsThe electroplating mixture spirals in the same direction around the baseline, which can improve the consistency of diamond particle concentration around the baseline circumference and enhance the uniformity of the mixed solution stirring. …”
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  15. 1235

    Research of urban agglomerations in the aspect of implementation of the administrative and territorial reform in Ukraine (case study of Kharkiv region) by Kostiantyn Niemets, Kateryna Sehida, Liudmyla Niemets, Kateryna Kravchenko, Yevheniia Telebienieva, Liudmyla Kliuchko, Volodymyr Redin

    Published 2019-12-01
    “…In the modern context of, one of the main tasks in the regional development management is to optimally realize the complex potential of the territories, which requires a comprehensive study of the spatial structure and evolutionary potential of agglomerations of all levels in order to identify disparities in their development, correct imbalances and optimize the spatial organization of the region. …”
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  16. 1236

    A Multimodal Machine Learning Model in Pneumonia Patients Hospital Length of Stay Prediction by Anna Annunziata, Salvatore Cappabianca, Salvatore Capuozzo, Nicola Coppola, Camilla Di Somma, Ludovico Docimo, Giuseppe Fiorentino, Michela Gravina, Lidia Marassi, Stefano Marrone, Domenico Parmeggiani, Giorgio Emanuele Polistina, Alfonso Reginelli, Caterina Sagnelli, Carlo Sansone

    Published 2024-12-01
    “…Hospital overcrowding, driven by both structural management challenges and widespread medical emergencies, has prompted extensive research into machine learning (ML) solutions for predicting patient length of stay (LOS) to optimize bed allocation. While many existing models simplify the LOS prediction problem to a classification task, predicting broad ranges of hospital days, an exact day-based regression model is often crucial for precise planning. …”
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  17. 1237

    Measuring genetic diversity across populations. by Niloufar Abhari, Caroline Colijn, Arne Mooers, Paul Tupper

    Published 2024-12-01
    “…Relying solely on measures that treat each population as a monomorphic lineage (like a species) can be misleading. To address this problem, we present four population-level diversity assessment approaches: Pooling, Averaging, Pairwise Differencing, and Fixing. …”
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  18. 1238

    ENVIRONMENTAL LITERACY PROFILE OF STUDENTS IN NATURAL SCIENCE LEARNING-BASED EXPERIENTIAL by Sabila Yasaroh, Insih Wilujeng, Sri Atun, Mega Indah Puspita Sari

    Published 2023-01-01
    “…Environmental literacy is very necessary for the prevention of environmental problems and for creating a healthy environment. One effective model to improve environmental literacy in schools is Experiential Learning, which invites students to design actions to care for the environment and actively participate in providing solutions to environmental problems. …”
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  19. 1239

    Enhancing Cardiovascular Risk Prediction with a Simplified Carotid IMT Protocol: Evidence from the IMPROVE Study by Fabrizio Veglia, Anna Maria Malagoni, Mauro Amato, Rona J. Strawbridge, Kai Savonen, Philippe Giral, Antonio Gallo, Matteo Pirro, Bruna Gigante, Per Eriksson, Douwe J. Mulder, Beatrice Frigerio, Daniela Sansaro, Alessio Ravani, Daniela Coggi, Roberta Baetta, Nicolò Capra, Elena Tremoli, Damiano Baldassarre

    Published 2025-02-01
    “…<b>Background/Objectives</b>: Carotid intima-media thickness (CIMT) has long been used as an index of subclinical atherosclerosis, but its role as a risk modifier in cardiovascular (CV) risk optimization has recently been questioned due to methodological problems, such as lack of protocol standardization and scanning difficulties. …”
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  20. 1240

    DYNAMICS OF DATA OF DIFFERENTIAL WHITE BLOOD CELL COUNT IN PATIENTS WITH GENERALIZED PERIODONTITIS WITH DIFFERENT BLOOD GROUPS by Y.L. Bandrivsky

    Published 2018-12-01
    “… Periodontal tissue diseases, in particular, generalized periodontitis, are one of the most common problems of dentistry of the present. Determination of the peculiarities of the course of this pathology, depending on the group membership of blood of patients, in particular the data of the leukogram, will allow to develop in the future a complex of targeted, prophylactic and therapeutic measures that will improve and optimize the ways of solving this problem. …”
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