Electronics and Communications in Japan最新文献

Event-Triggered Robust Control of Robot Manipulators 机器人机械手的事件触发鲁棒控制

IF 0.5 4区工程技术

Electronics and Communications in Japan Pub Date : 2024-11-20 DOI: 10.1002/ecj.12463

Xiao-Xuan Zhao, Zi-Jiang Yang

引用次数: 0

A Hardware Chaotic Neural Network With Gap Junction Models

IF 0.5 4区工程技术

Electronics and Communications in Japan Pub Date : 2024-11-15 DOI: 10.1002/ecj.12467

Takuto Yamaguchi, Katsutoshi Saeki

{"title":"A Hardware Chaotic Neural Network With Gap Junction Models","authors":"Takuto Yamaguchi, Katsutoshi Saeki","doi":"10.1002/ecj.12467","DOIUrl":"https://doi.org/10.1002/ecj.12467","url":null,"abstract":"<div>\u0000 \u0000 <p>We aim at the engineering applications of reservoir computing using hardware chaotic neural networks, including associative memory recall. The reservoir layer used in reservoir computing is networked and constructed using pulse-type hardware chaos neuron models (P-HCNMs). The structure of the reservoir layer is simple, which is advantageous for hardware implementation. By inducing chaos in the reservoir layer, it is possible to use the “chaotic edge” where the reservoir reaches its highest efficiency. It has also been reported that incorporating self-correction within the reservoir layer increases the efficiency of the task. In this paper, we constructed a hardware small-world neural network using a synaptic model with spike timing-dependent synaptic plasticity (STDP) and a gap junction model. As a result, it is clarified that all cell body models with synaptic model connections show chaotic firing by simulation at the same time, and that the STDP model enables learning while keeping the chaotic phenomena. In addition, comparison with the firing of cell body models coupled only with synaptic models suggested that the gap junction model works significantly in inducing chaos in neural networks.</p>\u0000 </div>","PeriodicalId":50539,"journal":{"name":"Electronics and Communications in Japan","volume":"107 4","pages":""},"PeriodicalIF":0.5,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142868466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Controlling Assist Robots to Follow Lumbar Load on Muscle Fatigue

IF 0.5 4区工程技术

Electronics and Communications in Japan Pub Date : 2024-11-09 DOI: 10.1002/ecj.12468

Yusuke Yoshida, Takashi Kamezaki, Daisuke Kushida

{"title":"Effects of Controlling Assist Robots to Follow Lumbar Load on Muscle Fatigue","authors":"Yusuke Yoshida, Takashi Kamezaki, Daisuke Kushida","doi":"10.1002/ecj.12468","DOIUrl":"https://doi.org/10.1002/ecj.12468","url":null,"abstract":"<div>\u0000 \u0000 <p>We developed an assist robot that changes its assist force in real time according to the lumbar load estimated from the load information on the hand measured using a hand sensor device and the posture information. Furthermore, using the developed assist robot, the effect of the load-following control on muscle fatigue was verified. The load was set at 6 and 1 kgf, and the amount of muscle activity in the lumbar region was measured using a muscle potential sensor during continuous flexion–extension exercises. The central frequency of the power spectrum was calculated as muscle fatigue, and its time trend was obtained. For comparison, similar experiments were also conducted without an assistive robot and with an existing assistive robot. Consequently, when load-following control was used, muscle fatigue was reduced compared with existing assist robots in which the assist force was excessive in relation to the load. This shows the importance of load-following control that is necessary to control the assist force according to the load when the assist robot is worn during work in which the load changes in a complex manner.</p>\u0000 </div>","PeriodicalId":50539,"journal":{"name":"Electronics and Communications in Japan","volume":"107 4","pages":""},"PeriodicalIF":0.5,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142868434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Absolute Train Localization Based on the Identification of Surrounding Structures Using 1D LiDAR Sensor

IF 0.5 4区工程技术

Electronics and Communications in Japan Pub Date : 2024-11-05 DOI: 10.1002/ecj.12464

Kensuke Nagai, Wataru Ohnishi, Takafumi Koseki

引用次数: 0

Development of Numerical Analysis Method for Cathode Sheath Considering Electron Emission From Cathode in Vacuum Arc

IF 0.5 4区工程技术

Electronics and Communications in Japan Pub Date : 2024-11-04 DOI: 10.1002/ecj.12465

Masahiro Takagi, Hiroto Suzuki, Yuki Suzuki, Yusuke Nemoto, Toru Iwao, Tatsuhito Nakajima

{"title":"Development of Numerical Analysis Method for Cathode Sheath Considering Electron Emission From Cathode in Vacuum Arc","authors":"Masahiro Takagi, Hiroto Suzuki, Yuki Suzuki, Yusuke Nemoto, Toru Iwao, Tatsuhito Nakajima","doi":"10.1002/ecj.12465","DOIUrl":"https://doi.org/10.1002/ecj.12465","url":null,"abstract":"<div>\u0000 \u0000 <p>It is imperative to develop the simulation of vacuum arcs as a tool to aid electrode design in vacuum circuit breakers. Although the development of electromagnetic thermo-fluid simulations for vacuum arcs has been reported, most of them do not take cathode sheath phenomena into account and have not been able to reproduce vacuum arc phenomena, especially cathode spots. As the first step, the cathode sheath voltage, cathode surface electric field, and temperature and field (T-F) electron emission current were analyzed numerically on the basis of the space charge in the cathode sheath. In this study, the cathode sheath was assumed to exist when the charge density induced on the cathode surface is positive, and the temperature and density of vacuum arc plasma and cathode temperature, which are physical quantities obtained by electromagnetic thermo-fluid simulation, were used as parameters of the analysis. As a result, the cathode sheath voltage, electric field, and electron emission current density can be calculated from the vacuum arc plasma temperature, density, and cathode temperature. Numerical results show that the electron emission current density has a dominant effect on the presence or absence of the cathode sheath.</p>\u0000 </div>","PeriodicalId":50539,"journal":{"name":"Electronics and Communications in Japan","volume":"107 4","pages":""},"PeriodicalIF":0.5,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142868006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication of Flexible Organic Field Effect Transistor Using Patterned Electrospray Deposition

IF 0.5 4区工程技术

Electronics and Communications in Japan Pub Date : 2024-11-04 DOI: 10.1002/ecj.12466

Takahisa Moriwaki, Hiroshi Yamauchi, Takashi Tadokoro

引用次数: 0

Optical cavity type of sensor elements for a wide range of hydrogen gas detection 用于多种氢气检测的光腔型传感器元件

IF 0.5 4区工程技术

Electronics and Communications in Japan Pub Date : 2024-06-28 DOI: 10.1002/ecj.12462

Haruki Yamane, Satoshi Yanase, Koki Takahashi, Nobuya Seko, Koji Shigemura

引用次数: 0

Detection of circulating tumor cells in blood using two-step random forest 利用两步随机森林检测血液中的循环肿瘤细胞

IF 0.5 4区工程技术

Electronics and Communications in Japan Pub Date : 2024-06-10 DOI: 10.1002/ecj.12447

Hua Wei, Takahiro Natori, Tomohiro Tanaka, Shin Aoki, Sho Kuriyama, Takeshi Yamada, Naoyuki Aikawa

{"title":"Detection of circulating tumor cells in blood using two-step random forest","authors":"Hua Wei, Takahiro Natori, Tomohiro Tanaka, Shin Aoki, Sho Kuriyama, Takeshi Yamada, Naoyuki Aikawa","doi":"10.1002/ecj.12447","DOIUrl":"https://doi.org/10.1002/ecj.12447","url":null,"abstract":"<p>Cancer has been the leading cause of death among Japanese since 1981, and many people die from it every year worldwide. While various measures have been taken to reduce the mortality rate of cancer, circulating tumor cells (CTCs) in the blood have been attracting attention in recent years. In the past, CTCs were detected by visual inspection by a physician or by an expensive machine, but these methods required much effort by the physician and required only EpCAM-expressing cells to be detected. In addition, detection by image processing has been used, but it has the problem that the area of interest is only a part of the area and there are many false positives. In this paper, we propose a two-step classification method that focuses on the shape and surface of cells. In the proposed method, multiple shape and surface features are obtained for four types of cells in blood images: Clusters, CTCs, Normal Cells, and Vertical Cells. Based on the features, cells are classified using a two-step Random Forest and their accuracy is evaluated. Furthermore, the effectiveness of the proposed method is demonstrated by comparing it with conventional methods.</p>","PeriodicalId":50539,"journal":{"name":"Electronics and Communications in Japan","volume":"107 3","pages":""},"PeriodicalIF":0.5,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142158669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Banknote identification based on characteristic differences 基于特征差异的钞票识别

IF 0.5 4区工程技术

Electronics and Communications in Japan Pub Date : 2024-06-04 DOI: 10.1002/ecj.12457

Hiroto Nagayoshi, Yoshitaka Hiramatsu, Noriaki Fujimura, Tatsuhiko Kagehiro

引用次数: 0

Effects of inserting ultrashort carbon nanotubes into lipid bilayers on membrane morphology 将超短碳纳米管插入脂质双分子层对膜形态的影响

IF 0.5 4区工程技术

Electronics and Communications in Japan Pub Date : 2024-06-04 DOI: 10.1002/ecj.12461

Shoichiro Kanno, Zugui Peng, Kenta Shimba, Yoshitaka Miyamoto, Tohru Yagi

{"title":"Effects of inserting ultrashort carbon nanotubes into lipid bilayers on membrane morphology","authors":"Shoichiro Kanno, Zugui Peng, Kenta Shimba, Yoshitaka Miyamoto, Tohru Yagi","doi":"10.1002/ecj.12461","DOIUrl":"10.1002/ecj.12461","url":null,"abstract":"<p>Single-walled carbon nanotubes (CNTs) are carbon materials with unique thermal, optical, mechanical, and electrical properties, with hollow cylindrical structures of a few nanometers in diameter. CNTs cut to about 10 nm (Ultrashort CNTs, US-CNTs) can spontaneously insert into lipid bilayers. Therefore, applications have been proposed to combine CNTs with lipid bilayers to give the membranes the properties of CNTs. However, CNTs interact with membranes to induce morphological changes in the membranes, which may hinder these applications. In this study, to investigate the effects, US-CNTs are exposed to lipid bilayer vesicles (giant unilamellar vesicles, GUVs), which are used as a model for cell membranes, and the changes in membrane morphology with each US-CNT concentration were evaluated by fluorescence microscopy. As a result, GUVs show morphological changes upon exposure to US-CNTs, eventually transforming into a multiple vesicle-linked shape. This result suggests an increase in the area and asymmetry of the GUV membrane. Based on these results, we have proposed a hypothesis regarding the mechanism of morphological changes induced in the GUV membranes by US-CNTs exposure.</p>","PeriodicalId":50539,"journal":{"name":"Electronics and Communications in Japan","volume":"107 3","pages":""},"PeriodicalIF":0.5,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141387453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0