多指ロボットハンドシステムの柔軟性と汎用性に関する研究

早大学位記番号:新7683早稲田大

Non-Standard Errors

In statistics, samples are drawn from a population in a data-generating process (DGP). Standard errors measure the uncertainty in estimates of population parameters. In science, evidence is generated to test hypotheses in an evidence-generating process (EGP). We claim that EGP variation across researchers adds uncertainty: Non-standard errors (NSEs). We study NSEs by letting 164 teams test the same hypotheses on the same data. NSEs turn out to be sizable, but smaller for better reproducible or higher rated research. Adding peer-review stages reduces NSEs. We further find that this type of uncertainty is underestimated by participants

Dosimetric impact of flattening filter and flattening filter-free beams on IMRT planning of NSCLC

CARO 2016 Annual Scientific Meeting, "Quality and Safety in Radiation Oncology", September 14-17, 2016, Banff, AB202101 bcrcVersion of RecordPublishe

Audit on the Hong Kong renal registry data accuracy: A single center perspective

Objective: The Hong Kong Renal Registry is a direct online computerized registry, and one of its functions is to serve as a clinical database for individual renal centers. Currently, we rely on clinical staff for data entry in our center. Integrity and accuracy of the data are important for analyzing patients on renal replacement therapy. The objective of this study was to perform an audit program on the accuracy of the renal registry data on existing renal replacement therapy patients. Methods: A total of 376 patients (268 peritoneal dialysis, 50 hemodialysis, and 58 post-transplanted patients) were on the renal replacement therapy registry of United Christian Hospital as of June 30, 2001. Approximately 10% of the patients (total 36 patients: 25 peritoneal dialysis, 5 hemodialysis, and 6 posttransplanted patients) were randomly selected for audit. We wanted to identify whether the data were being entered accurately, inaccurately, or not entered. Subgroup analyses on different registry categories and comparison between essential and nonessential data were performed. Results: We examined 3287 data items (2153 essential and 1134 nonessential). The overall rate of accurate data entry was 81%, the rate of inaccurate data entry was 4%, and missed data entry was 15%. The most frequent accurately entered data were "hemodialysis treatment" (96%) and "conservative treatment" (100%) under the category of "treatment/outcome"; the most frequent inaccurately entered data were "access complication" (17%) under the category of "complication." The most frequently missing essential data were "exit site infection" (40%) and "peritonitis" under the category of "complication." Conclusion: This audit program identifies the areas for improvement in data entry in the renal registry.link_to_subscribed_fulltex

Acupuncture for Poststroke Dysphagia: A Pilot, Nonrandomized, Self-Controlled Trial

Objective. To evaluate the effectiveness and safety of acupuncture treatment for dysphagia as a complication of stroke. Methods and Design. This is a multicenter, pragmatic, nonrandomized, self-controlled clinical trial. A total of 39 patients were recruited from several Chinese medicine outpatient clinics and hospital-affiliated speech therapy outpatient clinics in Hong Kong. 26 patients completed all the 24 sessions of acupuncture treatment within two months, and only 12 of them were used as self-control. For the self-control group, the retrospective clinical data was taken from the electronic patient records with patient consent. The descriptive swallowing function data were converted into the quantitative Royal Brisbane Hospital Outcome Measure for Swallowing (RBHOMS) scores by two registered speech therapists through a validation process. And the data were validated by reaching consensus between the two speech therapists. All subjects underwent a baseline assessment before commencement of treatment, and outcome assessments were conducted upon the completion of treatment. The primary outcome measure is the RBHOMS score, which is a swallowing disability rating scale for monitoring difficulties in daily swallowing function. Secondary outcome measures include the Chinese version of the Swallow Quality-of-Life Questionnaire and adverse events. All the primary and secondary outcomes were assessed at baseline as well as at the end of acupuncture treatment (month 2). Results. A total of 39 participants aged 46 to 89 years were enrolled in the study, and the male-to-female ratio was 15 : 11. The mean baseline RBHOMS score of all 39 participants was 5.92 ± 2.23. The mean retrospective RBHOMS score of the 12 subjects who were used as self-control was 5.67 ± 1.72 before enrollment, while the mean RBHOMS score of the 26 participants who completed all the 24 sessions of treatment was 6.92 ± 2.07. There were statistically significant differences between the RBHOMS score at the completion of treatment and baseline (p=0.006), and retrospective data (p=0.042). Moreover, a significant difference was also found in terms of swallow quality-of-life score before and after acupuncture treatment (p<0.01). Conclusions. This pilot study provides preliminary evidence for the effectiveness of acupuncture for poststroke dysphagia. The findings from this trial can be used as a foundation for future full-scale randomized controlled clinical trials to assess the efficacy and safety of acupuncture for poststroke dysphagia. Ethics and Dissemination. The ethical approval of the clinical research study was granted by the Research Ethics Committee of both New Territories East and West Cluster of Hong Kong. Written informed consent was obtained from all participants, and the study was undertaken according to the ICH-GCP Guidelines. Trial Registration. This trial is registered with ChiCTR-TRC-12002621 and the registration date is 2012-10-26

Folic acid consumption reduces resistin level and restores blunted acetylcholine-induced aortic relaxation in obese/diabetic mice

Folic acid supplementation provides beneficial effects on endothelial functions in patients with hyperhomocysteinemia. However, its effects on vascular functions under diabetic conditions are largely unknown. Therefore, the effect(s) of folic acid (5.7 and 71 μg/kg/day for 4 weeks) on aortic relaxation was investigated using obese/diabetic (+db/+db) mice and lean littermate (+db/+m) mice. Acetylcholine-induced relaxation in +db/+db mice was less than that observed in +db/+m mice. The reduced relaxation in +db/+db mice was restored by consumption of 71 μg/kg folic acid. Acetylcholine-induced relaxation (with and without folic acid treatment) was sensitive to NG-nitro-l-arginine methyl ester, 2-(4-morpholinyl)-8-phenyl-4H-1-benzopyran-4-one, geldanamycin and triciribine. In addition, acetylcholine-induced relaxation was attenuated by resistin. The plasma level of resistin in +db/+db mice was sevenfold higher than that measured in +db/+m mice, and the elevated plasma level of resistin in +db/+db mice was reduced by 25% after treatment with 71 μg/kg folic acid. Folic acid slightly increased the ratio of reduced glutathione to oxidized glutathione in +db/+db mice. Moreover, folic acid caused a reduction in PTEN (phosphatase and tensin homolog deleted on chromosome 10) expression, an increase in the phosphorylation of endothelial nitric oxide synthase (eNOSSer1177) and AktSer473, and an enhanced interaction of heat shock protein 90 (HSP90) with eNOS in both strains, with greater magnitude observed in +db/+db mice. In conclusion, folic acid consumption improved blunted acetylcholine-induced relaxation in +db/+db mice. The mechanism may be, at least partly, attributed to enhancement of PI3K/HSP90/eNOS/Akt cascade, reduction in plasma resistin level, down-regulation of PTEN and slight modification of oxidative state