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Edge enhanced depth perception with binocular meta-lens

Opto-Electronic Science 2024年第09期 6-16页

作者： Xiaoyuan Liu Jingcheng Zhang Borui Leng Yin Zhou Jialuo Cheng takeshi Yamaguchi Takuo Tanaka Mu Ku Chen Department of Electrical Engineering City University of Hong Kong Centre for Biosystems Neuroscienceand Nanotechnology City University of Hong Kong The State Key Laboratory of Terahertz and Millimeter Waves and Nanotechnology City University of Hong Kong Innovative Photon Manipulation Research Team RIKEN Center for Advanced Photonics Metamaterial Laboratory RIKEN Cluster for Pioneering Research Institute of Post-LED Photonics Tokushima University

The increasing popularity of the metaverse has led to a growing interest and market size in spatial computing from both academia and industry. Developing portable and accurate imaging and depth sensing systems is crucial for advancing next-generation virtual reality devices. This work demonstrates an intelligent, lightweight, and compact edge-enhanced depth perception system that utilizes a binocular meta-lens for spatial computing. The miniaturized system comprises a binocular meta-lens, a 532 nm filter, and a CMOS sensor. For disparity computation, we propose a stereo-matching neural network with a novel H-Module. The H-Module incorporates an attention mechanism into the Siamese network. The symmetric architecture, with cross-pixel interaction and cross-view interaction, enables a more comprehensive analysis of contextual information in stereo images. Based on spatial intensity discontinuity, the edge enhancement eliminates illposed regions in the image where ambiguous depth predictions may occur due to a lack of texture. With the assistance of deep learning, our edge-enhanced system provides prompt responses in less than 0.15 seconds. This edge-enhanced depth perception meta-lens imaging system will significantly contribute to accurate 3D scene modeling, machine vision, autonomous driving, and robotics development.

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Utility of plasma D-dimer for diagnosis of venous thromboembolism after hepatectomy

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World Journal of Clinical Cases 2024年第2期12卷 276-284页

作者： Taiichiro Miyake Hiroaki Yanagimoto Daisuke Tsugawa Masayuki Akita Riki Asakura Keisuke Arai Toshihiko Yoshida Shinichi So Jun Ishida takeshi Urade Yoshihide Nanno Kenji Fukushima Hidetoshi Gon Shohei Komatsu Sadaki Asari Hirochika Toyama Masahiro Kido Tetsuo Ajiki Takumi Fukumoto Division of Hepato-Biliary-Pancreatic Surgery Department of SurgeryKobe University Graduate School of MedicineKobe 650-0017HyogoJapan

BACKGROUND Venous thromboembolism(VTE)is a potentially fatal complication of *** use of postoperative prophylactic anticoagulation in patients who have undergone hepatectomy is controversial because of the risk of postoperative ***,we hypothesized that monitoring plasma D-dimer could be useful in the early diagnosis of VTE after *** To evaluate the utility of monitoring plasma D-dimer levels in the early diagnosis of VTE after *** The medical records of patients who underwent hepatectomy at our institution between January 2017 and December 2020 were retrospectively *** were divided into two groups according to whether or not they developed VTE after hepatectomy,as diagnosed by contrast-enhanced computed tomography and/or ultrasonography of the lower *** factors,including demographic data and perioperative D-dimer values,were compared between the two *** operating characteristic curve analysis was performed to determine the D-dimer cutoff *** and multivariate analyses were performed using logistic regression analysis to identify significant *** In total,234 patients who underwent hepatectomy were,of whom(5.6%)were diagnosed with VTE following hepatectomy.A comparison between the two groups showed significant differences in operative time(529 vs 403 min,P=0.0274)and blood loss(530 vs 138 mL,P=0.0067).The D-dimer levels on postoperative days(POD)1,3,5,7 were significantly higher in the VTE group than in the non-VTE *** the multivariate analysis,intraoperative blood loss of>275 mL[odds ratio(OR)=5.32,95%confidence interval(CI):1.05-27.0,P=0.044]and plasma D-dimer levels on POD 5≥21μg/mL(OR=10.1,95%CI:2.04-50.1,P=0.0046)were independent risk factors for VTE after *** Monitoring of plasma D-dimer levels after hepatectomy is useful for early diagnosis of VTE and may avoid routine prophylactic anticoagulation in the

关键词： Hepatectomy Malignant tumor Postoperative complication D-dimer Early diagnosis Venous thromboembolism

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Impact of Socioeconomic Status and Demographic Composition on Disaster Mortality: Community‑Level Analysis for the 2011 Tohoku Tsunami

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International Journal of Disaster Risk Science 2022年第6期13卷 913-924页

作者： takeshi Miyazaki School of Economics Kyushu UniversityFukuoka 819-0395Japan

On 11 March 2011, the Tohoku tsunami hit the northeastern region of Japan, causing massive damage to people and property. The tsunami was bigger than any other in Japan’s recorded history, but the damage varied by community. This research addressed the effects of socioeconomic status and demographic composition on mortality in the 2011 Tohoku tsunami using community-level *** effects were estimated using regression analysis, taking into account a variety of potential contributing aspects at the community level, including strength of the tsunami,population characteristics, gender, age, education, household composition, evacuation methods, and occupation. It was found that the height of the tsunami and the shares of threegeneration households and employees in the manufacturing industry are all positively correlated with tsunami *** impacts of these factors on mortality are particularly large for the older adults.

关键词： 2011 Tohoku tsunami Community-level analysis Demographic composition Disaster risk reduction Mortality Socioeconomic status

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Experiment on a Semi-Active In-Car Crib with Joint Application of Regular and Inverted Pendulum Mechanisms Using Scale Model

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Transactions of Nanjing University of Aeronautics and Astronautics 2018年第1期35卷 28-37页

作者： Kawashima takeshi Department of Mechanical Engineering Kanagawa Institute of Technology

To reduce the collision shock and risk of injury to an infant in an in-car crib(or in a child safety bed)during a car crash,it is necessary to limit the force acting on the crib below a certain allowable *** realize this objective,we propose a semi-active in-car crib system with the joint application of regular and inverted pendulum *** crib is supported by arms similar to a pendulum,and the pendulum system itself is supported by arms similar to an inverted *** addition,the arm acting as a regular pendulum is joined with the arm acting as an inverted pendulum through a linking mechanism for simplicity,and the friction torque of the joint connecting the base and the latter arm is controlled using a brake mechanism,which enables the proposed in-car crib to gradually increase the deceleration of the crib and maintain it at around the target *** system not only reduces the impulsive force but also transfers the force to the infant′s back using a spin control system,i.e.,the impulse force is made to act perpendicularly on the *** spin control system was developed in our previous *** present work focuses on the acceleration control system.A semi-active control law with acceleration feedback is introduced using the sliding mode control ***,a feedback system of the crib acceleration relative to the vehicle is proposed for the high-vibrational ***,a control experiment using scale model is conducted to confirm the effectiveness,and some results are reported.

关键词： shock control occupant crash protection passive safety device child restraint system impact relaxation

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Tumor size discrepancy between endoscopic and pathological evaluations in colorectal endoscopic submucosal dissection

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World Journal of Gastrointestinal Endoscopy 2024年第3期16卷 136-147页

作者： takeshi Onda Osamu Goto Toshiaki Otsuka Yoshiaki Hayasaka Shun Nakagome Tsugumi Habu Yumiko Ishikawa Kumiko Kirita Eriko Koizumi Hiroto Noda Kazutoshi Higuchi Jun Omori Naohiko Akimoto Katsuhiko Iwakiri Department of Gastroenterology Nippon Medical SchoolGraduate School of MedicineBunkyo-ku 113-8603TokyoJapan Endoscopy Center Nippon Medical School HospitalBunkyo-ku 113-8603TokyoJapan Department of Hygiene and Public Health Nippon Medical SchoolBunkyoku 113-8603TokyoJapan Center for Medical Education Nippon Medical SchoolBunkyo-ku 113-8603TokyoJapan

BACKGROUND Tumor size impacts the technical difficulty and histological curability of colorectal endoscopic submucosal dissection(ESD);however,the preoperative evaluation of tumor size is often different from histological *** influential factors on failure to obtain an accurate tumor size evaluation could help prepare optimal conditions for safer and more reliable *** This was a retrospective study conducted at a single institution.A total of 377 lesions removed by colorectal ESD at our hospital between April 2018 and March 2022 were *** first assessed the difference in size with an absolute per-centage of the scaling ***,we compared the clinicopatho-logical characteristics of the correct scaling group(>-33%and33%),which was further subdivided into the underscaling group(-33%or less of the discrepancy)and overscaling group(33%or more of the discrepancy),*** secondary outcome measures,parameters on size estimation were compared between the underscaling and correct scaling groups,as well as between the overscaling and correct scaling ***,multivariate analysis was performed in terms of the following relevant parameters on size estimation:Pathological size,location,and possible influential factors(P<0.1)in the univariate *** The mean of absolute percentage in the scaling discordance was 21%,and 91 lesions were considered to be incorrectly estimated in *** incorrect scaling was significantly remarkable in larger lesions(40 mm vs 28 mm;P<0.001)and less experience(P<0.001),and these two factors were influential on the underscaling(75 lesions;P<0.001).Conversely,compared with the correct scaling group,16 lesions in the overscaling group were significantly small(20 mm vs 28 mm;P<0.001),and the small lesion size was influential on the overscaling(P=0.002).CONCLUSION Lesions indicated for colorectal ESD tended to be underestimate

关键词： Endoscopic submucosal dissection Colorectal tumor Tumor size Size estimation Size discrepancy

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Zoonotic human liver flukes,a type 1 biocarcinogen,in freshwater fishes:genetic analysis and confirmation of molluscan vectors and reservoir hosts in Bangladesh

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Infectious Diseases of Poverty 2024年第3期13卷 73-88页

作者： Sharmin Shahid Labony Md.Abdul Alim Muhammad Mehedi Hasan Md.Shahadat Hossain Sharmin Akter Joydeep Paul Thahsin Farjana Md.Haydar Ali Mohammad Zahangir Alam takeshi Hatta Hayato Kawada Keiko Mizutani Naotoshi Tsuji null Anisuzzaman Department of Parasitology Faculty of Veterinary ScienceBangladesh Agricultural UniversityMymensingh 2202Bangladesh Department of Fisheries Technology Faculty of FisheriesBangladesh Agricultural UniversityMymensingh 2202Bangladesh Department of Biotechnology School of Life Sciences&BiotechnologyAdamas UniversityBarasat-Barrackpore RdJagannathpurKolkataWest Bengal 700126India Department of Pathology and Parasitology Hajee Mohammad Danesh Science and Technology UniversityDinajpur 5200Bangladesh Department of Parasitology and Tropical Medicine Kitasato University School of Medicine1-15-1 KitasatoMinamiSagamiharaKanagawa 252-0374Japan Department of Molecular and Cellular Parasitology Kitasato University Graduate School of Medical Sciences1-15-1 KitasatoMinamiSagamiharaKanagawa 252-0373Japan

Background Opisthorchiid flukes,particularly Opisthorchis viverrini,Opisthorchis felineus,Clonorchis sinensis,and Metorchis *** the most common fish-borne zoonotic human liver flukes(hLFs).Liver fluke infections are more prevalent in resource-deprived and underprivileged *** herein estimated the prevalence of the metacercariae(MC)of major hLFs in common large freshwater fishes(lFWF)marketed for human consumption from some selected areas of Bangladesh along with detection of their molluscan vectors and *** The current status of fish-borne zoonotic hLF infections in lFWF was investigated along with their molluscan vectors and mammalian reservoir hosts in Mymensingh and Kishoreganj in Bangladesh from July 2018-June 2022 using conventional and multiple molecular techniques,such as PCR,PCR-restriction fragment length polymorphism(RFLP),sequencing,and bioinformatic *** infection rate of fishes was analyzed using the Z-test and the loads of MC were compared using the chi-squared(χ^(2))*** The MC of ***,Opisthorchis spp.,and Metorchis *** detected in 11 species of common and popular *** lFWF,the estimated prevalence was 18.7%and the mean load was 137.4±149.8 MC per 100 g of *** prevalence was the highest(P0.05)distributed between the head and body of *** infection rate was slightly higher in cultured(19.6%)*** MC of ***,***,***,and Metorchis orientalis in fishes were confirmed using PCR,PCR-RFLP and *** cercariae of opisthorchiid(Pleurolophocercus cercariae)flukes were only recovered from Bithynia spp.(3.9%,42 out of 1089).The ova of hLFs from dogs(4.3%,5 out of 116)and cats(6.0%,6 out of 100),and adult flukes(***)from ducks(41.1%113 out of 275)were *** The MC of

关键词： Human liver fluke Freshwater fish Molluscan vector Reservoir host Bangladesh

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Computer-generated holograms for 3D display(Invited Paper)

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Chinese Optics Letters 2009年第12期7卷 1079-1082页

作者： Hiroshi Yoshikawa takeshi Yamaguchi Department of Electronics and Computer Science Nihon University

We have been studying various types of computer-generated holograms for three-dimensional （3D） displays both for a real-time holographic video display and a hard copy, or a printed hologram. For the hard copy output, we have developed a direct fringe printer, which is achieved to print over 100 gigapixels computer-generated hologram with 0.44μm pitch. In this paper, we introduce our recent progresses on the rainbow hologram, the cylindrical holograms, and the disk hologram for 3D display.

关键词： Computer-generated holograms for 3D display Figure

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Malignant biliary obstruction due to metastatic non-hepatopancreato-biliary cancer

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World Journal of Gastroenterology 2022年第10期28卷 985-1008页

作者： takeshi Okamoto Department of Gastroenterology St.Luke’s International HospitalChuo-ku 104-8560TokyoJapan

Malignant biliary obstruction generally results from primary malignancies of the pancreatic head,bile duct,gallbladder,liver,and ampulla of *** lesions from other primaries to these organs or nearby lymph nodes are rarer causes of biliary *** most common primaries include renal cancer,lung cancer,gastric cancer,colorectal cancer,breast cancer,lymphoma,and *** may be difficult to differentiate from primary hepato-pancreatobiliary cancer based on imaging studies,or even on *** is also no consensus on the optimal method of treatment,including the feasibility and effectiveness of endoscopic intervention or surgery.A thorough review of the literature on pancreato-biliary metastases and malignant biliary obstruction due to metastatic non-hepato-pancreato-biliary cancer is *** diagnostic modality and clinical characteristics may differ significantly depending on the type of primary *** primaries also cause malignant biliary obstruction in different ways,including direct invasion,pancreatic or biliary metastasis,hilar lymph node metastasis,liver metastasis,and peritoneal *** may hold promise for some types of pancreato-biliary *** review aims to elucidate the current knowledge in this area,which has received sparse attention in the *** aging population,advances in diagnostic imaging,and improved treatment options may lead to an increase in these rare occurrences going forward.

关键词： Bile duct obstruction Obstructive jaundice Pancreas Metastasis Endoscopic retrograde cholangiopancreatography

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Synthesis and catalytic properties of iron-cerium phosphate prepared in ethylene glycol using additives

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Journal of Advanced Ceramics 2013年第1期2卷 49-54页

作者： Hiroaki ONODA takeshi SAKUMURA Department of Informatics and Environmental Sciences Kyoto Prefectural University1-5Shimogamo Nakaragi-choSakyo-kuKyoto 606-8522Japan

The effects of cerium substitution,use of additives,and heating temperature on the chemical composition and catalytic activity of iron phosphate were ***-cerium phosphate was prepared from iron nitrate,ammonium cerium nitrate,and sodium phosphate in ethylene glycol using sodium dodecyl-sulfate or acetylacetone as *** chemical composition,particle shape and size distribution of the obtained samples were respectively evaluated based on ICP and XRD,SEM,and laser diffraction/scattering *** catalytic activity was evaluated based on the decomposition of the complex formed from formaldehyde,ammonium acetate,and *** peaks corresponding to FePO_(4) were observed for the samples heated at 600℃whereas samples treated at lower temperatures were ***-cerium phosphates heated at 200℃and 400℃exhibited high catalytic activity for the decomposition of the aforementioned complex.

关键词： iron phosphate cerium substitution ethylene glycol ICP analysis catalytic property

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On Hardy's Theorem on SU(1,1)

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Chinese Annals of Mathematics,Series B 2007年第4期28卷 429-440页

作者： takeshi KAWAZOE Jianming LIU Denartment of Mathematics Keio University at Fujisawa Endo FujisawaKanagawa 252-8520Japan Laboratory of Mathematics and Applied Mathematics School of Mathematical Sciences Peking UniversityBeiJing 100871China

The classical Hardy theorem asserts that f and its Fourier transform f can not both be very rapidly decreasing. This theorem was generalized on Lie groups and also for the Fourier-Jacobi transform. However, on SU（1, 1） there are infinitely many “good” functions in the sense that f and its spherical Fourier transform y both have good decay. In this paper, we shall characterize such functions on SU（1, 1）.

关键词： Heat kernel Jacobi transform Plancherel formula

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