検索結果 2585 件
| 著者 | Mbuna, Julius| Kaneta, Takashi| Imasaka, Totaro| |
|---|---|
| 発行日 | 2011-06-24 |
| 出版物タイトル | Journal of Chromatography A |
| 巻 | 1218巻 |
| 号 | 25号 |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/46952 |
|---|---|
| フルテキストURL | mfe_38_1-2_039_059.pdf |
| 著者 | Kanatani, Kenichi| |
| 抄録 | We investigate the meaning of "statistical methods" for geometric inference based on image feature points. Tracing back the origin of feature uncertainty to image processing operations, we discuss the implications of asymptotic analysis in reference to "geometric fitting" and "geometric model selection", We point out that a correspondence exists between the standard statistical analysis and the geometric inference problem. We also compare the capability of the "geometric AIC" and the "geometric MDL' in detecting degeneracy. Next, we review recent progress in geometric fitting techniques for linear constraints, describing the "FNS method", the "HEIV method", the "renormalization method", and other related techniques. Finally, we discuss the "Neyman-Scott problem" and "semiparametric models" in relation to geometric inference. We conclude that applications of statistical methods requires careful considerations about the nature of the problem in question. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2004-03 |
| 巻 | 38巻 |
| 号 | 1-2号 |
| 開始ページ | 39 |
| 終了ページ | 59 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 80016889442 |
| 著者 | Irie, Koichiro| Ekuni, Daisuke| Tomofuji, Takaaki| Azuma, Tetsuji| Endo, Yasumasa| Kasuyama, Kenta| Morita, Manabu| |
|---|---|
| 発行日 | 2011-01 |
| 出版物タイトル | Archives of Oral Biology |
| 巻 | 56巻 |
| 号 | 1号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 難波 徳郎| 三浦 嘉也| 崎田 真一| |
|---|---|
| 発行日 | 2005-01 |
| 出版物タイトル | Journal of the Ceramic Society of Japan |
| 巻 | 113巻 |
| 号 | 1313号 |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/AMO/46852 |
|---|---|
| フルテキストURL | 65_4_265.pdf |
| 著者 | Kojima, Katsuhide| Kato, Katsuya| Oto, Takahiro| Mitsuhashi, Toshiharu| Shinya, Takayoshi| Sei, Tetsuro| Okumura, Yoshihiro| Sato, Shuhei| Miyoshi, Shinichiro| Kanazawa, Susumu| |
| 抄録 | To determine the effectiveness of living-donor lobar lung transplantation (LDLLT), it is necessary to predict the recipient's postoperative lung function. Traditionally, Date's formula, also called the segmental ratio, has used the number of lung segments to estimate the forced vital capacity (FVC) of grafts in LDLLT. To provide a more precise estimate of graft FVC, we calculated the volumes of the lower lobe and total lung using three-dimensional computed tomography (3D-CT) and the volume ratio between them. We calculated the volume ratio in 52 donors and tested the difference between the segmental volume ratios with a one-tailed t-test. We also calculated the predicted graft FVC in 21 LDLLTs using the segmental ratio pFVC(c) and the volume ratio pFVC(v), and then found the Pearson's correlation coefficients for both pFVC(c) and pFVC(v) with the recipients' actual FVC (rFVC) measured spirometrically 6 months after surgery. Significant differences were found between the segmental ratio and the average volume ratio for both sides (right, p＝0.03;left, p＝0.0003). Both pFVC(c) and pFVC(v) correlated significantly with rFVC at 6 months after surgery (p＝0.007 and 0.006). Both the conventional and the volumetric methods provided FVC predictions that correlated significantly with measured postoperative FVC. |
| キーワード | living-donor lobar lung transplantation 3D-CT volumetry |
| Amo Type | Original Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-08 |
| 巻 | 65巻 |
| 号 | 4号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 265 |
| 終了ページ | 268 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21860533 |
| Web of Science KeyUT | 000294236700007 |
| JaLCDOI | 10.18926/AMO/46634 |
|---|---|
| フルテキストURL | 65_3_211.pdf |
| 著者 | Nakanishi, Kazuo| Yamane, Kentarou| Tanaka, Masato| Misawa, Haruo| Saiga, Kenta| Ozaki, Toshifumi| |
| 抄録 | Here we report a case of surgery for kyphosis of the thoracolumbar spine in an elderly patient, in whom surgery was performed because the patient had developed intractable digestive symptoms. The case was that of a 76-year-old female with complaints of back pain and dysphagia. When videofluoroscopic examination (VF) of swallowing was performed in the cardia of the stomach, images that indicated stagnation and the reflux of food were observed. It was easier for the patient to swallow food in the extension position. We performed corrective fusion of the posterior spine. After the surgery, the kyphosis angle was improved to 27°, the patient's back pain was alleviated, and it became easier for the patient to swallow food. VF also showed that the patient's difficulties with the passage of food had improved. We believe that surgery is a good treatment option for cases of kyphosis with digestive symptoms and deteriorating activities of daily living (ADL), even in the absence of pain and paralysis. VF is also useful for performing evaluations before and after surgery. |
| キーワード | kyphosis dysphagia videofluoroscopic examination of swallowing (VF) fusion |
| Amo Type | Case Report |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-06 |
| 巻 | 65巻 |
| 号 | 3号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 211 |
| 終了ページ | 214 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21709720 |
| Web of Science KeyUT | 000292017500009 |
| JaLCDOI | 10.18926/AMO/46626 |
|---|---|
| フルテキストURL | 65_3_151.pdf |
| 著者 | Fujiwara, Toshiyoshi| |
| 抄録 | Replication-selective tumor-specific viruses constitute a novel approach for treatment of neoplastic disease. These vectors are designed to induce virus-mediated lysis of tumor cells after selective viral propagation within the tumor. Human telomerase is highly active in more than 85ｵ of primary cancers, regardless of their tissue origins, and its activity correlates closely with human telomerase reverse transcriptase (hTERT) expression. We constructed an attenuated adenovirus 5 vector (Telomelysin, OBP-301), in which the hTERT promoter element drives expression of E1 genes. Since only tumor cells that express telomerase activity would activate this promoter, the hTERT proximal promoter would allow for preferential expression of viral genes in tumor cells, leading to selective viral replication and oncolytic cell death. Lymphatic invasion is a major route for cancer cell dissemination, and adequate treatment of locoregional lymph nodes is required for curative treatment in patients with gastrointestinal tumors. We demonstrated that intratumoral injection of Telomelysin mediates effective in vivo purging of metastatic tumor cells from regional lymph nodes. Moreover, using noninvasive whole-body imaging, we found that intratumoral injection of Telomelysin followed by regional irradiation induces a substantial antitumor effect, resulting from tumor cell-specific radiosensitization, in an orthotopic human esophageal cancer xenograft model. These results illustrate the potential of oncolytic virotherapy as a promising strategy in the management of human gastrointestinal cancer. |
| キーワード | telomerase adenovirus metastasis lymph node colorectal cancer |
| Amo Type | Review |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-06 |
| 巻 | 65巻 |
| 号 | 3号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 151 |
| 終了ページ | 162 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21709712 |
| Web of Science KeyUT | 000292017500001 |
| 著者 | 吉栖 生一| |
|---|---|
| 発行日 | 1929-02-28 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 41巻 |
| 号 | 2号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 吉田 豐太| |
|---|---|
| 発行日 | 1932-02-29 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 44巻 |
| 号 | 2号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | Park, Jae Hyun| Okadakage, Sakiko| Sato, Yasumori| Akamatsu, Yutaka| Tai, Kiyoshi| |
|---|---|
| 発行日 | 2010-10 |
| 出版物タイトル | Journal of Esthetic and Restorative Dentistry |
| 巻 | 22巻 |
| 号 | 5号 |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/AMO/45274 |
|---|---|
| フルテキストURL | 65_2_143.pdf |
| 著者 | Kobayashi, Yasuyuki| Saika, Takashi| Manabe, Daisuke| Nasu, Yasutomo| Kumon, Hiromi| |
| 抄録 | We analyzed the prognostic factors influencing survival after surgeries for upper urinary tract urothelial carcinoma (UUT-UC) with longer follow-up periods than in previous studies. Between January 2000 and December 2004, 386 patients underwent nephroureterectomy for UUT-UC. The data for the 221 patients with UUT-UC were retrospectively reviewed. Nine variables were evaluated for association with the survival outcomes of cause-specific survival. The prognostic significance was tested univariately with the log-rank test. The simultaneous effects of multiple prognostic factors were estimated by multiple regression analysis using the Cox proportional hazards model. The median follow-up was 38.4 months. The 5-year over all survival was 62.3%. Significant prognostic factors for disease-specific survival rate on univariate analysis were pathological stage (p0.0001), tumor grade (p0.0324), and venous invasion (p0.0001). Multivariate analysis revealed that only venous invasion was significant for disease-specific survival rate (p0.0205). Venous invasion was the only independent prognostic factor in pathologically localized UUT-UC. |
| キーワード | nephroureterectomy transitional cell carcinoma upper urinary tract |
| Amo Type | Corrected and Republished Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-04 |
| 巻 | 65巻 |
| 号 | 2号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 143 |
| 終了ページ | 149 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 20200581 |
| Web of Science KeyUT | 000289818800011 |
| JaLCDOI | 10.18926/AMO/45273 |
|---|---|
| フルテキストURL | 65_2_135.pdf |
| 著者 | Matsuo, Toshihiko| Himei, Kengo| Ishii, Keita| Ichimura, Kouichi| Yanai, Hiroyuki| Nose, Soichiro| Mimura, Tetsushige| |
| 抄録 | An 18-year-old woman with a 2-year history of hypertension and headache was diagnosed with noradrenalin-secreting bilateral adrenal pheochromocytomas with paragangliomas in the background of von Hippel-Lindau disease with family histories and a missense mutation, 712C to T (Arg167Trp) in the VHL gene. She had optic disc hemangioma in the left eye which gradually enlarged and caused serous retinal detachment on the macula in one year. Low-dose external beam radiation (20 Gy) was administered to the left eye using a lens-sparing single lateral technique. She underwent craniotomy for cerebellar hemangioblastoma at the age of 22 years and total pancreatectomy for multiple neuroendocrine tumors at the age of 24 years. In the 6-year follow-up period after the radiotherapy, the optic disc hemangioma gradually reduced in size and its activity remained low, allowing good central vision to be maintained. External beam radiation is recommended as a treatment option for the initial therapy for optic disc hemangioma. |
| キーワード | retinal (papillary, optic disc) hemangioma von Hippel-Lindau disease pheochromocytoma pancreatic neuroendocrine tumor external beam radiation (radiotherapy) |
| Amo Type | Case Report |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-04 |
| 巻 | 65巻 |
| 号 | 2号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 135 |
| 終了ページ | 141 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21519372 |
| Web of Science KeyUT | 000289818800010 |
| JaLCDOI | 10.18926/44498 |
|---|---|
| フルテキストURL | mfe_045_036_045.pdf |
| 著者 | Kanatani, Kenichi| Niitsuma, Hirotaka| |
| 抄録 | We present a new method for optimally computing the 3-D rotation from two sets of 3-D data. Unlike 2-D data, the noise in 3-D data is inherently inhomogeneous and anisotropic, reflecting the characteristics of the 3-D sensing used. To cope with this, Ohta and Kanatani introduced a technique called “renormalization”. Following them, we represent a 3-D rotation in terms of a quaternion and compute an exact maximum likelihood solution using the FNS of Chojnacki et al. As an example, we consider 3-D data obtained by stereo vision and optimally compute the 3-D rotation by analyzing the noise characteristics of stereo reconstruction. We show that the widely used method is not suitable for 3-D data. We confirm that the renormalization of Ohta and Kanatani indeed computes almost an optimal solution and that, although the difference is small, the proposed method can compute an even better solution. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2011-01 |
| 巻 | 45巻 |
| 開始ページ | 36 |
| 終了ページ | 45 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 著作権者 | Copyright © by the authors |
| 論文のバージョン | publisher |
| NAID | 80021759250 |
| JaLCDOI | 10.18926/44497 |
|---|---|
| フルテキストURL | mfe_045_027_036.pdf |
| 著者 | Kanatani, Kenichi| Sugaya, Yasuyuki| |
| 抄録 | We describe in detail the algorithm of bundle adjustment for 3-D reconstruction from multiple images based on our latest research results. The main focus of this paper is on the handling of camera rotations and the efficiency of computation and memory usage when the number of variables is very large; an appropriate consideration of this is the core of the implementation of bundle adjustment. Computing the fundamental matrix from two views and reconstructing the 3-D structure from multiple views, we evaluate the performance of our algorithm and discuses technical issues of bundle adjustment implementation. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2011-01 |
| 巻 | 45巻 |
| 開始ページ | 27 |
| 終了ページ | 35 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 著作権者 | Copyright © by the authors |
| 論文のバージョン | publisher |
| NAID | 80021759249 |
| JaLCDOI | 10.18926/44495 |
|---|---|
| フルテキストURL | mfe_045_001_014.pdf |
| 著者 | Akiyoshi, Tatsuro| Imai, Jun| Konishi, Masami| |
| 抄録 | This paper presents a method of the controller design for the handling machine by using dsPIC(Digital Signal Processor + Peripheral Interface Controller). Recently, many manufacturing robots are operated in manufacturing facilities, with the aim of labor, cost saving, and improvement of the productivity. Such robots need to have positioning performance of high precision and simultaneously to save cost. In this paper, a digital optimal servo controller is designed, and it is implemented into our barebones controller which involves dsPIC. We have designed and manufactured the controller which is added suitable peripherals to improve the consistency between the mechanical machine operating in continuous time and controller in discrete time. The significance of this research is that digital implementation of the embedded system which has performance-limitation has ensured a comparable result, against the one with PC which has broad utility. When it is used as a controller, it is possible to restrain product prices greatly equivalent PC precision. We demonstrate potential that good control can be achieved even with low cost. Our research has lead to the viability of lower cost and higher performance system for the production process at factories. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2011-01 |
| 巻 | 45巻 |
| 開始ページ | 1 |
| 終了ページ | 14 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 著作権者 | Copyright © by the authors |
| 論文のバージョン | publisher |
| NAID | 120002905951 |
| JaLCDOI | 10.18926/44441 |
|---|---|
| フルテキストURL | hss_031_141_161.pdf |
| 著者 | 島村 紀和子| |
| 出版物タイトル | 岡山大学大学院社会文化科学研究科紀要 |
| 発行日 | 2011-03-25 |
| 巻 | 31巻 |
| 開始ページ | 141 |
| 終了ページ | 161 |
| ISSN | 1881-1671 |
| 言語 | フランス語 |
| 著作権者 | Copyright © 2011 岡山大学大学院社会文化科学研究科 |
| 論文のバージョン | publisher |
| NAID | 120002905934 |
| JaLCDOI | 10.18926/AMO/43825 |
|---|---|
| フルテキストURL | 65_1_11.pdf |
| 著者 | Kuwaki, Kenji| Nouso, Kazuhiro| Kobayashi, Yoshiyuki| Nakamura, Shinichiro| Ito, Yoichi M.| Iwadou, Shouta| Hagihara, Hiroaki| Yasunaka, Tetsuya| Toshimori, Junichi| Miyatake, Hirokazu| Miyoshi, Kenji| Onishi, Hideki| Miyake, Yasuhiro| Shoji, Bon| Takaki, Akinobu| Shiraha, Hidenori| Iwasaki, Yoshiaki| Kobashi, Haruhiko| Yamamoto, Kazuhide| |
| 抄録 | The purpose of this study was to build a prognostic model of hepatocellular carcinoma (HCC) using time-dependent covariates to re-evaluate the prognosis at any stage of the disease. The subjects were consecutive HCC patients who were treated at our institute between 1995 and 2007. We constructed time-fixed and time-dependent prognostic models with a training group (n＝336) and compared the prognostic abilities between conventional Cancer of the Liver Italian Program (CLIP) scores, Japan Integrated Staging (JIS) scores, an Okuda classification, and our prognostic models in the testing group (n＝227) with the c-index. The time-dependent prognostic model consisted of main tumor size, tumor number, portal vein invasion, distant metastasis, alpha-fetoprotein, des-gamma-carboxy prothrombin (DCP), bilirubin, and albumin and the weighted scores were set for each factor depending on the hazard ratio for the prognosis. The prognostic index was determined by summing the scores. The c-index values for the CLIP scores, JIS scores, Okuda classification, and our time-dependent model were 0.741, 0.727, 0.609, and 0.870, respectively. These results indicate that our time-dependent model can estimate the prognosis of HCC more precisely than traditional time-fixed models and can be used to re-predict the prognosis of HCC. |
| キーワード | hepatocellular carcinoma humans prognosis proportional hazards models time factors |
| Amo Type | Original Article |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-02 |
| 巻 | 65巻 |
| 号 | 1号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 11 |
| 終了ページ | 19 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21339791 |
| Web of Science KeyUT | 000287620500002 |
| JaLCDOI | 10.18926/AMO/43824 |
|---|---|
| フルテキストURL | 65_1_1.pdf |
| 著者 | Han, Xiao-Jian| Tomizawa, Kazuhito| Fujimura, Atsushi| Ohmori, Iori| Nishiki, Tei-ichi| Matsushita, Masayuki| Matsui, Hideki| |
| 抄録 | Mitochondria are important cellular organelles in most metabolic processes and have a highly dynamic nature, undergoing frequent fission and fusion. The dynamic balance between fission and fusion plays critical roles in mitochondrial functions. In recent studies, several large GTPases have been identified as key molecular factors in mitochondrial fission and fusion. Moreover, the posttranslational modifications of these large GTPases, including phosphorylation, ubiquitination and SUMOylation, have been shown to be involved in the regulation of mitochondrial dynamics. Neurons are particularly sensitive and vulnerable to any abnormalities in mitochondrial dynamics, due to their large energy demand and long extended processes. Emerging evidences have thus indicated a strong linkage between mitochondria and neurodegenerative diseases, including Alzheimer's disease, Parkinson's disease and Huntington's disease. In this review, we will describe the regulation of mitochondrial dynamics and its role in neurodegenerative diseases. |
| キーワード | mitochondria phosphorylation ubiquitination SUMOylation neurodegeneration |
| Amo Type | Review |
| 出版物タイトル | Acta Medica Okayama |
| 発行日 | 2011-02 |
| 巻 | 65巻 |
| 号 | 1号 |
| 出版者 | Okayama University Medical School |
| 開始ページ | 1 |
| 終了ページ | 10 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| 著作権者 | CopyrightⒸ 2011 by Okayama University Medical School |
| 論文のバージョン | publisher |
| 査読 | 有り |
| PubMed ID | 21339790 |
| Web of Science KeyUT | 000287620500001 |
| 著者 | 大重 彌吉| |
|---|---|
| 発行日 | 1954-05-31 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 66巻 |
| 号 | 5号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 大重 彌吉| |
|---|---|
| 発行日 | 1954-05-31 |
| 出版物タイトル | 岡山医学会雑誌 |
| 巻 | 66巻 |
| 号 | 5号 |
| 資料タイプ | 学術雑誌論文 |