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Detecting a Human Body Direction Using a Feature Selection Method
Yuuki Nakashima,Joo Kooi Tan,Seiji Ishikawa,Takashi Morie 제어로봇시스템학회 2010 제어로봇시스템학회 국제학술대회 논문집 Vol.2010 No.10
This paper describes a novel technique for detecting a human body direction using SVM constructed by HOG feature selected by AdaBoost. HOG feature is well-known feature for the robust judgment of a human. We employ the feature for detecting a human body direction. We compared some feature selecting methods with the previous one. Experimental results show effectiveness of the proposed method.
Nishimura, Mai,Miyatake, Takashi,Nakashima, Ayaka,Miyoshi, Ai,Mimura, Mayuko,Nagamatsu, Masaaki,Ogita, Kazuhide,Yokoi, Takeshi Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.18
Background: Atypical squamous cells of undetermined significance (ASCUS) feature a wide variety of cervical cells, including benign and malignant examples. The management of ASCUS is complicated. Guidelines for office gynecology in Japan recommend performing a high-risk human papillomavirus (HPV) test as a rule. The guidelines also recommend repeat cervical cytology after 6 and 12 months, or immediate colposcopy. The purpose of this study was to determine the clinical significance of ASCUS. Materials and Methods: Between January 2012 and December 2014, a total of 162 patients underwent cervical conization for cervical intraepithelial neoplasia grade 3 (CIN3), carcinoma in situ, squamous cell carcinoma, microinvasive squamous cell carcinoma, and adenocarcinoma in situ at our hospital. The results of cervical cytology prior to conization, the pathology after conization, and high-risk HPV testing were obtained from clinical records and analyzed retrospectively. Results: Based on cervical cytology, 31 (19.1%) of 162 patients were primarily diagnosed with ASCUS. Among these, 25 (80.6%) were positive for high-risk HPV, and the test results of the remaining 6 patients (19.4%) were uncertain. In the final pathological diagnosis after conization, 27 (87.1%) and 4 patients (12.9%) were diagnosed with CIN3 and carcinoma in situ, respectively. Conclusions: Although ASCUS is known as a low-risk abnormal cervical cytology, approximately 20% of patients who underwent cervical conization had ASCUS. The relationship between the cervical cytology of ASCUS and the final pathological results for CIN3 or invasive carcinoma should be investigated statistically. In cases of ASCUS, we recommend HPV tests or colposcopic examination rather than cytological follow-up, because of the risk of missing CIN3 or more advanced disease.
Usefulness of the Endotoxin Activity Assay to Evaluate the Degree of Lung Injury
Yuichiro Sakamoto,Satoshi Inoue,Takashi Iwamura,Tomoko Yamashita,Atsushi Nakashima,Hiroyuki Koami,Toru Miike,Mayuko Yahata,Hisashi Imahase,Akiko Goto,Showgo Narumi,Miho Ohta,Chris-Kosuke Yamada 연세대학교의과대학 2014 Yonsei medical journal Vol.55 No.4
Purpose: It has been reported that the Pulse Contour Cardiac Output (PiCCO) is very useful mainly in the field of intensive care and treatment to grasp the pathophysiologicalconditions of pulmonary edema because of its capability of obtainingdata such as Pulmonary Vascular Permeability Index (PVPI) and Extra VascularLung Water (EVLW). Furthermore, a high degree of usability of various markers has been reported for better understanding of the pathological conditions in cases with septicemia. Materials and Methods: The correlation between the cardiorespiratory status based upon the PiCCO monitor (EVLW and PVPI) and inflammatorymarkers including C reactive protein, procalcitonin (PC), and EndotoxinActivity Assay (EAA) were evaluated in 11 severe cases that required treatmentwith a respirator in an intensive care unit. Results: The EAA values were significantly higher in patients with abnormal EVLW at 0.46±0.20 compared to the normal EVLW group at 0.21±0.19 (p=0.0064). In a similar fashion, patients with abnormal PVPI values tended to have higher PC levels at 18.9±21.8 comparedto normal PVPI cases at 2.4±2.2 (p=0.0676). On the other hand, PVPI was significantly higher in the abnormal EAA group at 3.55±0.48 in comparison with the normal EAA group at 1.99±0.68 (p=0.0029). The abnormal EAA group tended to have higher PVPI values than the normal EAA group. Conclusion: The EAA is a measurement method designed to estimate the activity of endotoxins in the whole blood. Our results suggest that the EAA value, which had the greatest correlationwith lung disorders diagnosed by the PiCCO monitoring, reflects inflammatoryreactions predominantly in the lungs.
Yuichiro Sakamoto,Satoshi Inoue,Takashi Iwamura,Tomoko Yamashita,Atsushi Nakashima,Yoichi Nishimura,Hiroyuki Koami,Hisashi Imahase,Akiko Goto,Kosuke Chris Yamada,Kunihiro Mashiko,Hiroyuki Yokota 연세대학교의과대학 2013 Yonsei medical journal Vol.54 No.3
Purpose: Few reports have been made on the therapeutic effects as well as pathological features of an antithrombin preparation in patients diagnosed with septic disseminated intravascular coagulation (DIC) by the diagnostic criteria for acute DIC. Materials and Methods: A total of 88 sepsis patients who had received inpatient hospital care during the period from January 2000 through December 2008 were divided into two groups, an antithrombin group and a non-antithrombin group, to study the outcomes. Furthermore, the relationship between sepsis-related factors and DIC in 44 patients was studied. Results: The antithrombin group contained 34 patients, and the non-antithrombin group contained 54 patients. The outcomes were significantly better in the antithrombin group. The levels of protein C were low in DIC patients. Conclusion: Our results suggest that early administration of antithrombin might improve outcomes of septic DIC patients in the diagnostic criteria for Japanese Association for Acute Medicine acute DIC.
String Cavitation and 3D PIV in Multi-Hole Injector
( Hiroaki Nakano ),( Rubby Prasetya ),( Shinichiro Deguchi ),( Takashi Miwa ),( Akira Sou ),( Keiya Nishida ),( Akira Nakashima ),( Yoshitaka Wada ),( Yoshiharu Ueki ),( Hideaki Yokohata ) 한국액체미립화학회 2017 한국액체미립화학회 학술강연회 논문집 Vol.2017 No.-
It is essential to control fuel spray characteristics in diesel engines for cleaning up exhaust gases and improving combustion efficiency. Turbulent cavitating flow in fuel injectors plays an important role in fuel spray characteristics. String cavitation may occur in a sac and nozzles of multi-hole fuel injectors, which strongly affects fuel spray characteristics. It should be caused by the vortex flow in the sac. However, the occurrence mechanism of string cavitation has not been clarified yet. The purpose of this study is to clarify the mechanism and condition of string cavitation occurrence by conducting a high-speed visualization experiment in a transparent injector of cavitation and a discharged liquid jet at various needle lifts and flow rates. We also measure the three-dimensional flow field in the sac by 3D PIV. The transparent acrylic multi-hole mini-sac nozzle is designed to visualize cavitation. Sodium iodide aqueous solutions or diesel oil with α-methyl naphthalene is used as a working fluid to avoid the refraction at the surface of the acrylic walls and these liquids. As a result, it is found that at low needle lift string cavitation often occurs which is surrounded by a vortical flow in the sac and increases the discharged hollow-cone liquid jet angle, while at high needle lift thin and short string cavitation may occur, which does not strongly influence discharged liquid jet and spray. The probability of the string cavitation appearance under various conditions as well as the transient motion of string cavitation and liquid jet is also clarified.