检索结果-内蒙古大学图书馆

IEEJ Transactions on Electronics, Information and Systems 2025年第2期145卷 136-144页

作者： Maeda, Yasunari School of Regional Innovation and Social Design Engineering Kitami Institute of Technology 165 Koen-cho Kitami Hokkaido090-8507 Japan

There is a lot of previous research on cultivation management based on mathematical engineering. In some previous research, the expected profit of cost constrained cultivation management for multiple agricultural fields with sensors is maximized under the condition that growing states are unknown. But in the previous research, it is assumed that the same crop will be grown in all agricultural fields and crop prices do not fluctuate. In this research, cost constrained cultivation management with sensors considering fluctuation of crop price under the condition that different crops can be grown in the agricultural fields and growing states are unknown is studied. The cultivation management problem is modeled by Markov decision processes as previous research. The expected profit is maximized with reference to a Bayes criterion using dynamic programming in proposed method. The effectiveness of the proposed method is shown by some computational examples. Adaptive cost adjustment between the different crops is confirmed in the computational examples. © 2025 The Institute of Electrical Engineers of Japan.

关键词： Markov processes

来源：评论

学校读者我要写书评

暂无评论

Reconfigurable mechanism-based metamaterials for ternary-coded elastic wave polarizers and programmable refraction control

引用

Applied Mathematics and Mechanics(English Edition) 2024年第7期45卷 1225-1242页

作者： Zhou HU Zhibo WEI Yan CHEN Rui ZHU School of Aerospace Engineering Beijing Institute of TechnologyBeijing100081China School of Mechanical Engineering Tianjin UniversityTianjin300350China Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education Tianjin UniversityTianjin300350China

Elastic metamaterials with unusual elastic properties offer unprecedented ways to modulate the polarization and propagation of elastic ***,most of them rely on the resonant structural components,and thus are frequency-dependent and ***,we present a reconfigurable 2D mechanism-based metamaterial which possesses transformable and frequency-independent elastic *** on the proposed mechanism-based metamaterial,interesting functionalities,such as ternarycoded elastic wave polarizer and programmable refraction,are ***,unique ternary-coded polarizers,with 1-trit polarization filtering and 2-trit polarization separating of longitudinal and transverse waves,are first ***,the strong anisotropy of the proposed metamaterial is harnessed to realize positive-negative bi-refraction,only-positive refraction,and only-negative ***,the wave functions with detailed microstructures are numerically verified.

关键词： elastic metamaterial elastic wave reconfigurable design zero mode ternary code programmable refraction

来源：评论

学校读者我要写书评

暂无评论

Synthesis of N,O-rich active site porous polymers and their efficient recovery of Gd(Ⅲ) from solution

引用

Journal of Rare Earths 2023年第9期41卷 1419-1428,I0006页

作者： Bin Xiao Lijinhong Huang Jiacai Ou Bin Zeng Zhiqiang Zou Xiangrong Zeng Wanfu Huang School of Resource and Environmental Engineering Jiangxi University of Science and TechnologyGanzhou 341000China School of Resources and Architectural Engineering Gannan University of Science and TechnologyGanzhou 341000China Faculty of Science and Engineering WA School of Mines:MineralsEnergy and Chemical EngineeringCurtin UniversityWAAustralia School of Architecture and Design Jiangxi University of Science and TechnologyGanzhou 341000China

Our previous study found that the adsorption performance of porous carbon for Gd(Ⅲ) could be significantly improved by increasing the N,and O functional groups on its ***,the adsorption capacity of porous carbon is low due to the limited number of N,and O functional groups that can be loaded on its *** to the advantage of customizable functional groups of porous organic polymers(POPs),the triazine-based Tb-MEL and hydroxyl-modified triazine-based Tp-MEL were synthesized by a one-step hydrothermal method using nitrogen-rich melamine as the raw material and triformylbenzene(Tb) and 2,4,6-triformylphloroglucinol(Tp),*** Gd(Ⅲ) adsorption isotherms and kinetic curves of Tb-MEL,and Tp-MEL at pH=6 and T=25℃ are in high agreement with the Langmuir isotherm(R^(2)>0.998) and pseudo-second-order kinetics(R^(2)>0.993),*** fitted maximum adsorption capacity(q_(max)) is about 136.05 mg/g,much higher than 58.38 mg/g of *** adsorption efficiency for Gd(Ⅲ) at pH=7 is close to 100%,and Tp-MEL maintains 62.4% of the initial adsorption capacity after ten cycle s of sorption/desorption of Gd(Ⅲ),with an average elution efficiency of more than 90%.Adsorption selection performance tests show that Tp-MEL has good adsorption selectivity for HREE ions,and the selectivity is as follows:Lu^(3+)>Y^(3+)>Gd^(3+)>Nd^(3+)>La^(3+)>Al^(3+)>Ca^(2+)>Mg^(2+).Batch adsorption,Brunauer-Emmett-Teller(BET) method,and X-ray photoelectron spectrometer(XPS)tests show that hydroxyl modifications lose the specific surface area of the polymer,and the functional groups contribute more to the adsorption performance than the specific surface area.

关键词： N O functional groups Triazine-based Hydroxyl-modified Adsorption performance Rare earths

来源：评论

学校读者我要写书评

暂无评论

Recommendation of Restaurant Menu Considering Meal History of Family

IEEJ Transactions on Electronics, Information and Systems

引用

IEEJ Transactions on Electronics, Information and Systems 2025年第4期145卷 452-458页

作者： Maeda, Yasunari School of Regional Innovation and Social Design Engineering Kitami Institute of Technology 165 Koen-cho Hokkaido Kitami090-8507 Japan

Many healthcare-oriented menu recommendation methods are proposed in previous research. In some previous research, the purchase cost is minimized in addition to the minimization of the healthcare loss under the limit on the purchase cost when there are multiple optimal solutions. But in the previous research, the minimization of the healthcare loss considering meal history has not been studied. In this research, a recommendation method for restaurant menus that minimizes the healthcare loss under the limit on the purchase cost, considering meal history of family is proposed. The proposed method also calculates the minimum purchase cost when there are multiple optimal solutions on the healthcare loss. In the proposed method, the healthcare loss and the purchase cost are minimized by dynamic programming. The effectiveness of the proposed method is shown by some computational examples. In the computational examples, the healthcare loss of the proposed method is confirmed to be smaller than the loss of the empirical recommendation method. Adaptive menu selection examples under cost constraints, considering meal history of family are also confirmed. This research is basic research, and future extended research is required. © 2025 The Institute of Electrical Engineers of Japan.

关键词： Dynamic programming

来源：评论

学校读者我要写书评

暂无评论

Regional and Altitudinal Differences on Road Usage Recovery in Aomori Prefecture Following the 2011 Tohoku Earthquake

IAENG International Journal of Computer Science

引用

IAENG International Journal of Computer Science 2024年第11期51卷 1880-1885页

作者： Gao, Shouyi Endo, Noriaki Saito, Mitsugu Design and Media Technology Graduate School of Engineering Iwate University Iwate Morioka Japan Faculty of Sport Science Department of Sport Intelligence and Mass Media Sendai University Miyagi Shibata Japan Department of Design and Media Technology Graduate School of Engineering Iwate University Iwate Morioka Japan

We evaluate regional and altitudinal differences in road recovery in Aomori Prefecture following the 2011 Tohoku Earthquake. We divided Aomori Prefecture into six regions, i.e., Shimokita, Kamikita, Sannpachi, Tosei, Chunan, and Seihoku regions. Next, we divided Aomori Prefecture into two areas, namely Low Altitude Area and High Altitude Area. In this context, altitude means the height above sea level. Low Altitude Area is under 50 meters above sea level. And, High Altitude Area is over 50 meters above sea level. The cumulative usable road distance ratio of the main roads both for the Low Altitude Area and for the High Altitude Area had been precisely calculated for each city from telematics data using the open source geographical information software. Defining the cumulative usable distance up to September 30, 2011 as 100%, the percentages of usable road distances were calculated. According to the results of our study, we conclude that the recovery conditions of regional roads in different altitude areas of Aomori Prefecture following the 2011 Tohoku Earthquake differed. Furthermore, we also conclude that the land shape of the regions is closely related to road usage recovery. © (2024), (International Association of Engineers). All rights reserved.

关键词： Earthquakes

来源：评论

学校读者我要写书评

暂无评论

Machine-learned wearable sensors for real-time hand-motion recognition: toward practical applications

引用

National Science Review 2024年第2期11卷 231-263页

作者： Kyung Rok Pyun Kangkyu Kwon Myung Jin Yoo Kyun Kyu Kim Dohyeon Gong Woon-Hong Yeo Seungyong Han Seung Hwan Ko Department of Mechanical Engineering Seoul National University IEN Center for Human-Centric Interfaces and Engineering Institute for Electronics and NanotechnologyGeorgia Institute of Technology School of Electrical and Computer Engineering Georgia Institute of Technology Department of Chemical Engineering Stanford University Department of Mechanical Engineering Ajou University George W.Woodruff School of Mechanical Engineering Georgia Institute of Technology Institute of Advanced Machinery and Design(SNU-IAMD) Seoul National University

Soft electromechanical sensors have led to a new paradigm of electronic devices for novel motion-based wearable applications in our daily lives. However, the vast amount of random and unidentified signals generated by complex body motions has hindered the precise recognition and practical application of this technology. Recent advancements in artificial-intelligence technology have enabled significant strides in extracting features from massive and intricate data sets, thereby presenting a breakthrough in utilizing wearable sensors for practical applications. Beyond traditional machine-learning techniques for classifying simple gestures, advanced machine-learning algorithms have been developed to handle more complex and nuanced motion-based tasks with restricted training data sets. Machine-learning techniques have improved the ability to perceive, and thus machine-learned wearable soft sensors have enabled accurate and rapid human-gesture recognition, providing real-time feedback to users. This forms a crucial component of future wearable electronics, contributing to a robust human–machine interface. In this review, we provide a comprehensive summary covering materials, structures and machine-learning algorithms for hand-gesture recognition and possible practical applications through machine-learned wearable electromechanical sensors.

关键词： wearable sensor soft electronics artificial intelligence machine learning human–machine interfaces gesture recognition

来源：评论

学校读者我要写书评

暂无评论

Comparison of microwave- and thermal-assisted rock fragmentation methods at different temperatures and loading rates

引用

International Journal of Mining Science and technology 2024年第6期34卷 799-819页

作者： Wei Yao Shuai Wang Bangbiao Wu Ying Xu Kaiwen Xia State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation School of Civil EngineeringTianjin UniversityTianjin 300072China China Railway Design Corporation Tianjin 300308China Institute of Geosafety School of Engineering and TechnologyChina University of GeosciencesBeijing 100083China

Understanding the effects of microwave irradiation and thermal treatment on the dynamic compression and fragmentation properties of rocks is essential to quantify energy consumption in rock *** this study,Fangshan granite(FG)specimens were exposed to microwave irradiation and heat *** damage of FG specimens induced by these two methods was compared using X-ray CT scanning and ultrasonic wave *** temperatures of FG after microwave irradiation and thermal treatment were effectively evaluated using a newly proposed technique.A novelty method for precisely determining the geometric features of fragments is developed to estimate the fragmentation ***,the dynamic uniaxial compressive strength(UCS),the dynamic fragmentation characteristics,and the fragmentation energy of FG after these two pretreatment methods can be reasonably *** noticeable distinction of loading rate effect on the dynamic UCS of FG between these two pretreatment methods is first observed.A relationship is established between the dynamic UCS and the damage induced by microwave irradiation and heat ***,fragmentation energy fan analysis is introduced to accurately compare the fragmentation properties of FG after two pretreatment methods in dynamic compression tests.

关键词： Fangshan granite Dynamic experiments Microwave irradiation Thermal treatment Loading rate Fragmentation

来源：评论

学校读者我要写书评

暂无评论

Predictive control of zero moment point (ZMP) for terrain robot kinematics

引用

Materials Today: Proceedings 2023年 80卷 122-127页

作者： Haldar, Arijit I. Pagar, Nitin D. Dept. of Mechanical Engineering MIT School of Engineering MIT Art Design & Technology University Pune 412201 India

Maintaining stability and completing the required trajectory are the most important motion control issues for a six-kinematic-degrees-of-freedom legged robot. Zero-moment point (ZMP) approaches have evolved into an indispensable tool for obtaining dynamic equilibrium in humanoid or bipod robots for walking and handling. It's point where momentary, applied, and reactive forces cancel out. Despite ZMP advancements, legged robots continue to struggle with a number of essential skills exhibited by primates, such as like the Atlas robot, which can walk but not jump, run, or sprint. In complex environments, it may be incapable of interception. Hence, in this study, the effect of center of mass (CoM) trajectory on biped robot stability has been explored to understand the secure walking behavior. The research investigates the predictive control technique of adjusting CoM trajectory to generate stable walking patterns, which pioneered the concept of altering the CoM in advance during human walking and reacting to changing path restrictions. This section explains how to fix continuous variation's ZMP tracking problem. This allows monitoring the necessary ZMP, expanding gait generation systems and their analysis. Predictive control can produce secure walking models by manipulating the COM and CoG pathline in bipod robots. © 2022

关键词： Trajectories

来源：评论

学校读者我要写书评

暂无评论

Dual modality prompt learning for visual question-grounded answering in robotic surgery

引用

Visual Computing for Industry,Biomedicine,and Art 2024年第1期7卷 316-328页

作者： Yue Zhang Wanshu Fan Peixi Peng Xin Yang Dongsheng Zhou Xiaopeng Wei National and Local Joint Engineering Laboratory of Computer Aided Design School of Software EngineeringDalian UniversityDalian 116622LiaoningChina School of Computer Science and Technology Dalian University of TechnologyDalian 116081LiaoningChina

With recent advancements in robotic surgery,notable strides have been made in visual question answering(VQA).Existing VQA systems typically generate textual answers to questions but fail to indicate the location of the relevant content within the *** limitation restricts the interpretative capacity of the VQA models and their abil-ity to explore specific image *** address this issue,this study proposes a grounded VQA model for robotic surgery,capable of localizing a specific region during answer *** inspiration from prompt learning in language models,a dual-modality prompt model was developed to enhance precise multimodal information ***,two complementary prompters were introduced to effectively integrate visual and textual prompts into the encoding process of the model.A visual complementary prompter merges visual prompt knowl-edge with visual information features to guide accurate *** textual complementary prompter aligns vis-ual information with textual prompt knowledge and textual information,guiding textual information towards a more accurate inference of the ***,a multiple iterative fusion strategy was adopted for comprehensive answer reasoning,to ensure high-quality generation of textual and grounded *** experimental results vali-date the effectiveness of the model,demonstrating its superiority over existing methods on the EndoVis-18 and End-oVis-17 datasets.

关键词： Prompt learning Visual prompt Textual prompt Grounding-answering Visual question answering

来源：评论

学校读者我要写书评

暂无评论

BEHAVIOR OF BUILT-UP BEAM USING HOT-ROLLED CHANNEL STEEL SUBJECTED TO CYCLIC LOADINGS

Journal of Structural and Construction Engineering

引用

Journal of Structural and Construction engineering 2023年第806期88卷 666-674页

作者： Zhang, Zilu Kanao, Iori Li, Jun Graduate School of Science and Technology Kyoto Institute of Technology Japan Faculty of Design and Architecture Kyoto Institute of Technology Japan School of Civil Engineering Qingdao University of Technology China

Finite element analysis is conducted on the built-up beam using hot-rolled channel steel subjected to vertical load and cyclic antisymmetric moment. The following were obtained. 1. The separation between channel steels will affect the strength and deformation of the built-up beam. 2. Suitable bolt arrangements can prevent capacity deterioration, HS01.5H and S3H are recommended. 3. The equal arrangement of lateral bracing is proposed. For maximum amplitude is 6θp, the spacing is 10 times beam-width for λy250, and additional bracings are required for λy＞250. © 2023 Architectural Institute of Japan. All rights reserved.

关键词： Hot rolling

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：