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World Journal of Clinical Cases 2024年第34期12卷 6721-6727页

作者： Yu Igata Masashi Kudo Motohiro Kojima Shota Kami Keishiro Aoki tomoyuki satake Tatsushi Kobayashi Motokazu Sugimoto Shin Kobayashi Masaru Konishi Naoto Gotohda Department of Hepatobiliary and Pancreatic Surgery National Cancer Center Hospital EastKashiwa 277-8577Japan Exploratory Oncology Research and Clinical Trial Center National Cancer CenterKashiwa 277-8577Japan Department of Hepatobiliary and Pancreatic Oncology National Cancer Center Hospital EastKashiwa 277-8577Japan Department of Diagnostic Radiology National Cancer Center Hospital EastChiba 277-8577Japan

BACKGROUND The combination of immune checkpoint inhibitors and chemotherapy has shown promising results for the treatment of advanced biliary tract cancer(BTC).Based on the results of the TOPAZ-1 trial,a gemcitabine and cisplatin plus durvalumab(GCD)regimen was recently approved as first-line therapy for patients with advanced ***,post-GCD conversion surgery has not been previously ***,we describe a case of advanced intrahepatic cholangiocarcinoma(ICC)successfully treated with radical surgery after *** SUMMARY A 65-year-old female diagnosed with advanced ICC with periductal infiltration into the hepatic hilum underwent eight cycles of GCD,followed by durvalumab maintenance treatment,with mild adverse *** response was ***,a conversion surgery with extended left hepatectomy and bile duct resection was *** resection margins were negative,and the pathological diagnosis was compatible with small duct type *** patient remained disease-free for 8 months without adjuvant *** We describe the case of a patient who received successful conversion surgery after GCD treatment for advanced ICC.

关键词： Conversion surgery Intrahepatic cholangiocarcinoma Small duct type Immunotherapy Case report

Visual Person Identification Using a Distance-dependent Appearance Model for a Person Following Robot

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International Journal of Automation and computing 2013年第5期10卷 438-446页

作者： Junji satake Masaya Chiba Jun Miura Department of Computer Science and Engineering Toyohashi University of Technology

This paper describes a person identifcation method for a mobile robot which performs specifc person following under dynamic complicated environments like a school canteen where many persons *** propose a distance-dependent appearance model which is based on scale-invariant feature transform（SIFT） *** is a powerful image feature that is invariant to scale and rotation in the image plane and also robust to changes of lighting ***,the feature is weak against afne transformations and the identifcation power will thus be degraded when the pose of a person changes *** therefore use a set of images taken from various directions to cope with pose ***,the number of SIFT feature matches between the model and an input image will decrease as the person becomes farther away from the ***,we also use a distance-dependent *** person following experiment was conducted using an actual mobile robot,and the quality assessment of person identifcation was performed.

关键词： Mobile robots image processing intelligent systems identifcation scale-invariant feature transform(SIFT)feature

Gastric adenocarcinoma of fundic gland type with signet-ring cell carcinoma component: A case report and review of the literature

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World Journal of Gastroenterology 2018年第26期24卷 2915-2920页

作者： Keita Kai Masaaki satake Osamu Tokunaga Department of Pathology Saga University Hospital Department of Gastroenterology Koga Hospital 21 Department of Pathology Shin Koga Hospital

A depressed lesion was found at a gastric angle of 76-yearold Japanese woman by esophagogastroduodenoscopy. Four years prior, she was diagnosed with a Helicobacter pylori infection but no eradication was performed. The pathological diagnosis of biopsy specimens was signet-ring cell carcinoma. Endoscopic submucosal dissection(ESD) was performed. Histopathological examination of the ESD specimen revealed proliferation of well-differentiated tubular adenocarcinoma mimicking fundic gland cells at the deep layer of the lamina propria mucosae. These tumor cells expressed focally pepsinogen-Ⅰ, diffusely MUC6, and scattered H^+/K^+ ATPase according to immunohistochemistry. Therefore, we diagnosed this tumor as gastric adenocarcinoma of fundic gland type(GA-FG). Adjacent to the GA-FG, proliferation of signet-ring cell carcinoma which diffusely expressed MUC 2 and MUC 5AC was observed. Intestinal metaplasia was focally observed in the surrounding mucosa of the signet-ring cell carcinoma. To the best of our knowledge, this is the first case report of GA-FG with a signet-ring cell carcinoma component. The origin of signet-ring cell carcinoma, i.e., whether it accidentally arose from a non-neoplastic mucosa and coexisted with the GA-FG or dedifferentiated from the GA-FG is unclear at present. We expect the accumulation of similar cases and further analysis to clarify this issue.

关键词： Gastric adenocarcinoma of fundic gland type Endoscopic submucosal dissection Helicobacter pylori Intestinal metaplasia Signet-ring cell carcinoma

An Approximate High Gain Observer for Speed-sensorless Estimation of Induction Motors

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IEEE/CAA Journal of Automatica Sinica 2019年第1期6卷 53-63页

作者： Yebin Wang Lei Zhou Scott A.Bortoff Akira satake Shinichi Furutani IEEE Mitsubishi Electric Research Laboratories the Department of Mechanical Engineering Massachusetts Institute of Technology the Advanced Technology R&D Center Mitsubishi Electric Corporation

Rotor speed estimation for induction motors is a key problem in speed-sensorless motor drives. This paper performs nonlinear high gain observer design based on the full-order model of the induction motor. Such an effort appears nontrivial due to the fact that the full-model at best admits locally a non-triangular observable form(NTOF), and its analytical representation in the NTOF can not be obtained. This paper proposes an approximate high gain estimation algorithm, which enjoys a constructive design, ease of tuning, and improved speed estimation and tracking performance. Experiments demonstrate the effectiveness of the proposed algorithm.

关键词： Induction motor industrial applications nonlinear state estimation speed-sensorless motor drive

Considering FOLFOXIRI plus bevacizumab for metastatic colorectal cancer with left-sided tumors

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World Journal of Gastrointestinal Oncology 2018年第12期10卷 528-531页

作者： Yu Sunakawa Hironaga satake Wataru Ichikawa Department of Clinical Oncology St. Marianna University School of Medicine Kawasaki Kanagawa 216-8511 Japan Cancer Treatment Center Kansai Medical University Hospital Hirakata-city Osaka 573-1191 Japan Division of Medical Oncology Showa University Fujigaoka Hospital Yokohama Kanagawa 227-8501 Japan

A recent subgroup analysis of the TRIBE trial suggested that FOLFOXIRI plus bevacizumab may be a preferred option for the first-line treatment of only right-sided metastatic colorectal cancer(mCRC), regardless of RAS or BRAF status. Our subanalysis of a phase Ⅱ trial of the FOLFOXIRI triplet regimen plus bevacizumab in patients with mCRC who had RAS mutant tumors showed that tumor shrinkage was better and the duration of treatment was longer in patients with leftsided tumors than in those with right-sided tumors, leading to a higher rate of conversion to surgery in mCRC patients with left-sided tumors. The early and deep responses to the triplet-regimen in patients with left-sided tumors might facilitate conversion treatment resulting in favorable survival. Our data suggest that the FOLFOXIRI plus bevacizumab might be a promising treatment for left-sided mCRC involving RAS mutant tumors.

关键词： Tumor sidedness FOLFOXIRI Bevacizumab Colorectal cancer RAS mutation

Classification of ripening stages of bananas based on support vector machine

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International Journal of Agricultural and Biological Engineering 2015年第6期8卷 99-103页

作者： Hou Juncai Hu Yaohua Hou Lixia Guo Kangquan Takaaki satake College of Mechanical and Electric Engineering Northwest A&F UniversityYangling 712100China Graduate School of Life and Environmental Sciences University of Tsukuba1-1-1TennodaiTsukuba 305-8702Japan

Non-destructive quality detection and automatic grading are important in fruit *** traditional way divides bananas into 7-level ripening stages based on *** study investigated the changes of peel color at three positions of banana fingers,***,middle and tip.A support vector machine method was used to classify the ripening stages by color value L*,a*and b*as input *** ripening stages were classified by 10-fold cross validation method of support vector machines with radial basis function kernel and linear function *** results showed that the color change of middle position of banana finger adequately reflected the changes in banana ripening stages.a*value continuously increased from ripening stage 1 to ripening stage 7,L*and b*values increased from ripening stage 1 to ripening stage 5,and then decreased from ripening stage 5 to ripening stage *** was difficult to recognize the ripening stages using L*,a*and b*values *** accuracy of classification using support vector machine based on radial basis function kernel reached 96.5%,which was higher than that for linear function *** research can provide a reference for automatic classification of banana ripening stages.

关键词： banana ripening stage color change support vector machine classification image recognition

High-Accuracy Polishing Technique Using Dwell Time Adjustment

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Communications in Computational Physics 2006年第4期1卷 701-715页

作者： S.satake K.Yamamoto S.Igarashi Department of Applied Electronics Tokyo University of Science2641 YamazakiNodaChiba 278-8510Japan

Two algorithms for dwell time adjustment are evaluated under the same polishing conditions that involve tool and work *** methods are based on Preston’s *** first method is a convolution algorithm based on the Fast Fourier *** second is an iterative method based on a constraint problem,extended from a one-dimensional formulation to address a two-dimensional *** methods are investigated for their computational cost,accuracy,and polishing *** convolution method has high accuracy and high *** constraint problem on the other hand is slow even when it requires larger memory and thus is more ***,unlike the other case a negative region in the polishing shape is not predicted ***,new techniques are devised by combining the two methods.

关键词： Polishing surface grinding dwell time convolution method fast Fourier transform constraint problem

The Torque Research on Concentrated Winding Brushless PM Motor

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The Torque Research on Concentrated Winding Brushless PM Mot...

Pummerer-type Functionalization of Aryl and Alkenyl Selenoxides

2002年IEEE十区计算机、通信、控制和电机工程会议

作者： Akira satake Industrial Electronics and System Laboratory Mitsubishi Electric Corporation

The paper introduces three approaches of calculatingthe torque of PM motor and describes how to calculate the torqueof concentrated winding brushless PM motor by using the energymethod. In concentrated winding brushless PM motor, because ofthe effect of teeth and slot there is ripple in cogging torque, andther wtll be pulsation torque when rotor eccentricity appears

关键词： The Torque Research on Concentrated Winding Brushless PM Motor

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复旦学报(自然科学版) 2005年第5期44卷 881-882页

作者： Kazuaki Shimada Yutaka Kikuta Ken-ichi satake Takahiro Suzuki Yukiko Inoue Shigenobu Aoyagi Yuji Takikawa Department of Chemical Engineering Faculty of EngineeringIwate University MoriokaIwate 020-8551Japan

1 Introduction Heteroatom-stabilized carbenium ions have been widely recognized as potential electrophilic ***,in contrast with the extensive works on thionium ion series,the highly labile character of selenoxide functionalities has caused serious limitation in the synthetic use in spite of their wide potentiality as synthetic equivalents of electrophilic selonium *** this paper,novel generation of selonium ions and the synthetic uses of the species for Pummerer-typeα-functionalization and for cycloaddition by using the novel dienophilic behavior ofπ-conjugated selonium cations.

关键词： selenoxide alkenyl selenoxide Pummerer reaction a-allylation a-azidation Diels-Alder reaction seloniumion

Volvulus of the gall bladder diagnosed by ultrasonography,computed tomography,coronal magnetic resonance imaging and magnetic resonance cholangio-pancreatography

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World Journal of Gastroenterology 2006年第28期12卷 4599-4601页

作者： Nobuhisa Matsuhashi Shinichi satake Kazunori Yawata Eri Asakawa Takashi Mizoguchi Masayuki Kanematsu Hiroshi Kondo Ichiro Yasuda Kenichi Nonaka Chihiro Tanaka Atsushi Misao Shinji Ogura Department of Emergency and Disaster Medicine Gifu University1-1 Yanagido501-1194Gifu CityJapan Department of Radiology Gifu University1-1 Yanagido501-1194Gifu CityJapan Department of Gastroenterology Gifu University1-1 Yanagido501-1194Gifu CityJapan Department of Surgical Oncology Gifu University1-1 Yanagido501-1194Gifu CityJapan Department of Surgery Misao HospitalYotsuyachou500-8088Gifu CityJapan

A 54-year-old woman was admitted to our hospital with the complaint of right upper quadrant pain. Upon physical examination the vital signs of the patient were within normal ranges. Ultrasonography and computed tomography （CT） examination of the abdomen was obtained, which demonstrated a large dilatated cystic structure, measuring approximately 68.6 mm × 48.6 mm, with marked distension and inflammation. Additionally, the enhanced CT was characterized by the non-enhanced wall of the gallbladder. As the third examination in this study, magnetic resonance imaging （MRI）, namely coronal MRI and magnetic resonance cholangio-pancreatography （MRCP）, were performed. The MRCP demonstrated a dilatation of the gallbladder but detected no neck of the gallbladder. Simple cholecystectomy was performed. Macroscopic findings included a distended and gangrenous gallbladder, and closer examination revealed a counterclockwise torsion of 360 degrees on the gallbladder mesentery. Coronal MRI and MRCP showing characteristic radiography may be useful in making a definitive diagnosis.

关键词： Volvulus of the gallbladder Computed tomography Magnetic resonance imaging Magnetic resonance cholangio-pa ncreatography