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deep neural network-based tools for hotel marketing activities of online travel agents

Multimedia Tools and Applications 2025年 1-24页

作者： Keles, Ali Keles, Ayturk Keles, Mustafa Berk Mutlu, Behçet Department of Computer Education and Instructional Technology Faculty of Education Agri Ibrahim Cecen University Agri04100 Turkey Machine Learning Engineer *** Istanbul Turkey Director of Technology R&D Center *** Istanbul Turkey Department of Computer Engineering Gebze Technical University Kocaeli Turkey

Vacationers always want to choose the hotel that best meets their needs and expectations. For this, they typically use online travel agents (OTAs). OTAs must analyze millions of images from thousands of hotels quickly and classify them accurately to best meet demands. This is a highly complex and challenging task. OTAs also have to choose a default image to represent best way each hotel in order to best market hotels to vacationers and encourage click behavior. This is another challenge to overcome. The biggest problem in classifying millions of images from different areas of hotels is that these areas often have similar objects and environments. For this reason, fewer categories have been used in deep learning (dL) studies conducted so far. In this study, two deep neural networks (dNN) have been developed to accomplish these challenging tasks. The first network is the "hotel image classification network" (HICNet), which classifies images of different areas of hotels into 11 categories. In a multi-class classification task that includes closely related categories such as bar, food, and lobby, the HICNet network achieved very good results, reaching an average of 79% precision, sensitivity, and F1-score. The second network is the "hotel default image network" (HdINet), which enables the determination of a default image for each hotel on the OTA page. HdINet can accurately identify the default image of hotels with an average of 92% precision, sensitivity, and F1-score. These networks have been integrated into the OTA system named *** and are currently in active use. © The Author(s) 2025.

关键词： Hotels

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Basic Study on Cybernic Interface for Amyotrophic Lateral Sclerosis Patients to Perform daily Living Tasks by Transiting Seamlessly Between Cyberspace and Physical Space

Basic Study on Cybernic Interface for Amyotrophic Lateral Sc...

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2024 IEEE/SICE International Symposium on System Integration, SII 2024

作者： Uehara, Akira Sankai, Yoshiyuki Center for Cybernics Research R&d Center for Frontiers of Mirai in Policy and Technology Faculty of Engineering Information and Systems Tennodai 1-1-1 Ibraki Tsukuba Japan

ISBN: (纸本)9798350312072

Amyotrophic lateral sclerosis (ALS) gradually make it difficult for the patients to move, breath, and express their will as their symptoms progress associated with motor neuron. It is important for the patients to be able to not only communicate their daily needs to someone such as family member of caregivers but also perform their daily activities and participate in society and fulfill social roles without constant support by other people. To improve their ability of independence, the purpose of this study is to develop a cybernic interface that can perform daily living tasks by transiting seamlessly between cyberspace and physical space based on the patient's remaining voluntary motor functions, and confirm the basic performance of the developed interface. The system consists of bio-electrical signals measurement unit, display unit, processor unit, and IoT unit. The system controlled the flipping up and down the head-mounted display (HMd) by estimating the intention of transition between cyberspace and physical space based on the bio-electrical signals of the forearm. When the HMd is attached to the user's face, the user can move at the virtual environment, operate IoT device at the room of physical world via virtual environment, and select voice output for expressing own state by the gaze. To confirm the basic performance of the developed interface for performing daily living tasks by oneself, we conducted basic experiment with an able-bodied participant. As a result, the participant was able to flip up the HMd, move at virtual environment, and operate the TV and lock at the physical space without moving own body similar to ALS patients. In conclusion, we confirmed the basic performance of performing daily living tasks to improve the ability of independence for ALS patients. The cybernic interface that can connect central nervous system to cyberspace and physical space has a potential for removing constraints due to motor dysfunctions and spatial limitation. © 20

关键词： Virtual reality

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Fabrication of Linear Polarization-Separating Silicon Metalens at Long-Wavelength Infrared 1

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15th International Conference on Sensing technology, ICST 2022

作者： Ishizuka, Noe Li, Jie Fuji, Wataru Ikezawa, Satoshi Iwami, Kentaro Department of Mechanical Systems Engineering Tokyo University of Agriculture and Technology Fuchu Japan Opto-Science R&D Department R&D Technology Center Tamron Co. Ltd. Saitama Japan

ISBN: (数字)9783031298714

ISBN: (纸本)9783031298707

A polarization-separating metalens at the long-wavelength infrared was designed, developed, and demonstrated. The silicon quadrangular pillars are adopted as meta-atoms to achieve full 2π phase coverage at the design wavelength of 10.6 μm for both of two orthogonal linear polarizations with high transmittance. Their dimensions were determined by electromagnetic field analysis based on a finite element method, and transmittances of more than 70% were obtained in all meta-atoms. The metalens was fabricated through electron beam lithography and reactive ion etching, and SEM observation showed that the fabrication was done while maintaining good verticality. An imaging test was performed using a commercially available micro-bolometer, and it was confirmed that the light was focused at different positions for each linear polarization. In the case of 45°-polarized illumination, it was confirmed that the light was focused at both locations. The fabricated metalens successfully showed the ability of linear polarization separation of a thermal image. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Silicon

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Process Planning Generation for reconfigurable Manufacturing Systems Based on Improved Squirrel Search Algorithm 7

Process Planning Generation for Reconfigurable Manufacturing...

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7th International Conference on Advanced Algorithms and Control engineering, ICAACE 2024

作者： Li, dong Yang, Jiping Gong, Xiaorong Xia, Qing College Of Advanced Manufacturing Engineering Chongqing University Of Posts And Telecommunications Chongqing China Chongqing Institute Of Ceprei Industrial Technology Technology R&d Center Chongqing China

ISBN: (纸本)9798350361445

The concept of reconfigurable manufacturing has emerged in response to the need to adapt to the rapidly evolving market environment and meet the growing demands for personalization and customization in manufacturing. reconfigurable Manufacturing Systems (rMS) are designed to combine the cost-efficiency features of rigid manufacturing systems with the agility to respond swiftly to market changes, similar to flexible manufacturing systems. Within the field of rMS research, process planning has consistently been recognized as a crucial aspect and a key technological focus. This paper addresses the process planning problem in reconfigurable manufacturing systems and proposes a multi-objective integer programming model. An improved squirrel search algorithm is also proposed to solve the problem. Firstly, the squirrel search algorithm is combined with the Pareto dominance theory to generate non-dominant solutions. Secondly, an adaptive predator presence probability strategy is proposed, which changes the predator probability from a fixed value to a decreasing value during the iteration process. This strategy aims to balance the global and local search of the algorithm. Finally, to enhance the algorithm's local search capabilities and prevent it from converging to local optima in the later stages, a random mutation strategy is employed. Additionally, the TOPSIS method is utilized to aid decision-makers in ranking and selecting the most optimal process plans. To validate the feasibility and practicality of the proposed model and new algorithm, numerical experiments were conducted. The results of the experiments demonstrate the superior performance of the algorithm presented in this paper. © 2024 IEEE.

关键词： Multiobjective optimization

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research on online correction method of dynamic ampacity parameters of submarine cable based on optical fiber temperature measurement 4

Research on online correction method of dynamic ampacity par...

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2024 4th International Conference on Optics and Communication technology, ICOCT 2024

作者： Li, Cunyi Zhang, Bo Hu, Peng Huo, Peng New Energy Engineering Technology Company Limited Beijing100034 China National Energy Wind Power Operation Technology R&D Center Xian710309 China

ISBN: (纸本)9781510685734

An on-line correction method for dynamic ampacity parameters of submarine cables based on optical fiber temperature measurement is proposed. First, through sensitivity analysis, find the material parameters that have a greater impact on the calculation of the current carrying capacity of IEC60853. Then, in the submarine cable real-time monitoring system, current data that meets certain characteristics and corresponding fiber temperature measurement data are extracted, and the conductor temperature is calculated by the thermal circuit method. Compared with the conductor temperature calculated by IEC60853, particle swarm optimization algorithm is used to modify the material parameters online, so as to reduce the error of IEC60853 in calculating the dynamic current carrying capacity. Finally, a 220KV three-core photovoltaic composite submarine cable from an offshore wind farm in Yancheng is taken as an example to verify the effectiveness of the method. © 2024 SPIE.

关键词： Sensitivity analysis

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t-BuOK/dMF-Promoted C-3 Sulfuration of Oxindoles via a radical Process

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有机化学 2024年第9期44卷 2898-2905页

作者： Wang Lili Zhang Zhou Wang Tingliang Wang Xinglan Mao Yuanhu Zhang Jiquan Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D College of PharmacyGuizhou Medical UniversityGuiyang 561113

An efficient C-3 sulfuration of oxindoles has been *** disulfide as the sulfurating agent,a wide range of sulfurated oxindoles have been synthesized under t-BuOK/N,N-dimethylformamide(dMF)promoted *** present method i... 详细信息

关键词： oxindole disulfide sulfuration radical

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Cellulose Elementary Fibrils as deagglomerated Binder for High-Mass-Loading Lithium Battery Electrodes

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Nano-Micro Letters 2025年第5期17卷 281-296页

作者： Young-Kuk Hong Jung-Hui Kim Nag-Young Kim Kyeong-Seok Oh Hong-I Kim Seokhyeon ryu Yumi Ko Ji-Young Kim Kwon-Hyung Lee Sang-Young Lee Department of Chemical and Biomolecular Engineering Yonsei University50 Yonsei-RoSeodaemun-GuSeoul 03722Republic of Korea Advanced Analysis and Data Center Korea Institute of Science and Technology(KIST)Seoul 02792Republic of Korea Ulsan Advanced Energy Technology R&D Center Korea Institute of Energy Research(KIER)Ulsan 44776Republic of Korea Department of Battery Engineering Yonsei University50 Yonsei-RoSeodaemun-GuSeoul 03722Republic of Korea

Amidst the ever-growing interest in high-mass-loading Li battery electrodes,a persistent challenge has been the insufficient continuity of their ion/electron conduction ***,we propose cellulose elementary fibrils(CEFs)as a class of deagglomerated binder for high-mass-loading *** from natural wood,CEF represents the most fundamental unit of cellulose with nanoscale *** preparation of the CEFs involves the modulation of intermolecular hydrogen bonding by the treatment with a proton acceptor and a hydrotropic *** elementary deagglomeration of the cellulose fibers increases surface area and anionic charge density,thus promoting uniform dispersion with carbon conductive additives and suppressing interfacial side reactions at ***,a homogeneous redox reaction is achieved throughout the *** resulting CEF-based cathode(overlithiated layered oxide(OLO)is chosen as a benchmark electrode active material)exhibits a high areal-mass-loading(50 mg cm^(-2),equivalent to an areal capacity of 12.5 mAh cm^(-2))and a high specific energy density(445.4 Wh kg–1)of a cell,which far exceeds those of previously reported OLO *** study highlights the viability of the deagglomerated binder in enabling sustainable high-mass-loading electrodes that are difficult to achieve with conventional synthetic polymer binders.

关键词： Cellulose elementary fibrils deagglomeration Electrode binders Lithium batteries High-mass-loading

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research on Optimal design of Bottom Hole Assembly of directional Well in Gadin-North Gadin Gas Field 13th

Research on Optimal Design of Bottom Hole Assembly of Direct...

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13th International Field Exploration and development Conference, IFEdC 2023

作者： Zhou, Tuo Li, Hang-Yuan Xiao, Yue Zhang, Wei Jin, Yu-Lai Zhou, Hai-Qiu Tang, Xue-Ping CNPC Engineering Technology R&D Company Limited Beijing102206 China College of Petroleum Engineering Beijing China National Engineering Research Center for Oil and Gas Drilling and Completion Technology Beijing China

ISBN: (纸本)9789819702558

Aiming at the problems such as difficulty in controlling well trajectory and easy occurrence of complex downhole accidents in directional deviation operation in salt-paste interbed of directional deviation well in Gadin-North Gadine gas field, position characteristic model and curvature calculation model are established by optimizing parameters affecting the performance of drill assembly, and the size and length of screw, drill collar and centralizer are analyzed and studied. The results show that the screw diameter and the centralizer diameter have a significant influence on the inclination building ability, and the change of drill collar length and drill collar diameter has a gentle influence on the inclination building ability. By adjusting the drill assembly size, the well inclination Angle can be optimized by 0.31°/30 m and 0.23°/30 m, respectively. The optimal result of the BHA provides the BHA optimization idea for the subsequent directional well drilling operation construction of the gas field, and better exploration and development. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Screws

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drive Stabilization of Multi-degree-of-Freedom Maglev Planar Motor Based on Closed Loop System Identification

Drive Stabilization of Multi-Degree-of-Freedom Maglev Planar...

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2025 IEEE International Conference on Mechatronics, ICM 2025

作者： Nakata, Keigo Ohnishi, Wataru Koseki, Takafumi Nakamura, Yuichiro Takahashi, Kenji Sekiguchi, Hiroyuki The University of Tokyo Dept. of Electrical Engineering and Information systems Tokyo Japan Advanced Technology R&D Center Mitsubishi Electric Corporation Hyogo Japan

ISBN: (纸本)9798331533892

Magnetic levitation planar motor can move at high speed and with high accuracy, and prevent vibration and noise because of no friction. This technology leads to the application of a transport system that requires high-speed and high-precision movement. However, the design of appropriate control algorithms is essential to achieve stability and high-speed, high-precision control of the maglev planar motor. In this research, we stabilized a maglev planar motor on the basis of system identification. Initially, we designed a whole control system for the movement of the maglev planar motor. Furthermore, we conducted system identification and verified that the maglev planar motor works with the designed control system and evaluated its motion performance. Through experiments, it was confirmed that accurate motion control was possible. This research is expected to be a basis for improving control performance soon. © 2025 IEEE.

关键词： degrees of freedom (mechanics)

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Fabrication and Characterization of dECM/PVA/GelMA Tissue-Engineered Small-diameter Blood Vessels 30th

Fabrication and Characterization of dECM/PVA/GelMA Tissue-En...

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30th International Conference on Computational and Experimental engineering and Sciences, ICCES 2024

作者： Li, Bing Yuan, Xiaojuan Xiao, Boren du, Zhihua Chen, Junjie Li, Changliu Li, Xiangqin Liu, Tianqing Song, Kedong State Key Laboratory of Fine Chemicals Dalian R&D Center for Stem Cell and Tissue Engineering Dalian University of Technology Dalian116024 China

ISBN: (纸本)9783031687747

Vascular disease is a disease with high lethality, and the development of small-diameter tissue-engineered blood vessels (less than 6 mm in diameter) capable of replacing autologous damaged blood vessels is of great importance. In this study, we first prepared decellularized vascular matrix (dECM), a material that removes immunogenicity and retains active ingredients required for cell growth. Next, methacrylated gelatin (GelMA) was prepared by grafting methacrylic anhydride on gelatin according to a previous method, and a pre-gel solution was prepared by blending it with the polymer polyvinyl alcohol (PVA) and dECM. An isometric combination mold was designed by 3d modeling software, and the pregel solution was infused into the mold, and double cross-linked hydrogel tubes were prepared after repeated freeze-thaw and UV cross-linking and demolding. The results showed that dECM removed most of the dNA but retained a certain amount of active ingredients, such as collagen and glycosaminoglycans. The porous structure of the hydrogels was suitable for cell growth and had suitable mechanical properties. Cellular experiments also demonstrated that the dECM/PVA/GelMA hydrogels had good cytocompatibility and adhesion. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Tissue

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