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HDR Spectral Video System Using CMY-ND Filter
Yuki Onishi,Yoshitsugu Manabe,Noriko Yata 한국색채학회 2017 AIC 2017 Jeju Vol.2017 No.10
Capturing natural scenes with wide dynamic range content using conventional RGB cameras often includes saturated and/or underexposed pixels. Furthermore, the color reproduction of the image is not sufficient to present correct color. There are some methods of High Dynamic Range (HDR) imaging and spectral imaging to solve these problems. However existing methods of HDR and spectral imaging need some images while changing optical filters, so it is difficult to acquire HDR and spectral video. This paper aims to achieve the HDR spectral video measurement using a single RGB camera with special optical element, complementary color filter (CMY) and neutral density (ND) filter. The CMY-ND image is acquired using CMY filters, ND filter and a single RGB camera with special optical element. First an acquisition image is divided into four images and make a registration. Next the saturated pixels in CMY filter images are detected and these pixels are interpolated by the pixels of ND filter image to generate HDR image. The spectral transformation matrix is calculated using RGB values and spectral distribution data measured beforehand. Spectral information is estimated by using the spectral transformation matrix. In experiments, the measurement accuracy and effectiveness are discussed based on the results of experiments.
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Students’ Sense of Coherence Before and After Basic Nursing Practice at A University
Motomi Hiraga,Keiko Miyamoto,Yukie Onishi,Toshie Honda,Miyoshi Takizawa,Chieko Yodawara 한국간호과학회 2021 한국간호과학회 학술대회 Vol.2021 No.10
Aim: Comparing students’ sense of coherence before and after they experience Basic Nursing Practices 1 and 2. Method: Subjects: A total of 210 university students from A University in Japan, consisting of 106 first-year students who experienced Basic Nursing Practice 1 in March and 104 second-year students who experienced Basic Nursing Practice 2 in February. Survey period: From January to February 2021 Survey contents: The Japanese version of SOC-13 (Yamazaki, 2009) to determine sense of coherence (Antonovsky, 1987/2001) was conducted before and after practical training. Survey method: Self-administered questionnaires that link pre- and post-training through signs. Analysis: Conducted descriptive statistics, t-test, and Wilcoxon signed-rank test using SPSS (Ver. 27). Ethical considerations: This study was approved by the Research Ethics Committee of the researcher"s affiliation (No. 488). Results: 139 (66.2%) responses were deemed valid as they could show connectivity before and after these courses. Sense of coherence was compared by totaling the inclusive sums of comprehensibility, manageability, and meaningfulness before and after the training. The inclusive sums and total of manageability were recognized as normality so that we could analyze them using the t-test. The results revealed that both exhibited significant differences before and after the practical training at P=0.000. The total of comprehensibility and meaningfulness were not recognized as normality, so we conducted the Wilcoxon signed-rank test. The results showed significant difference for both of them at P = 0.000. Discussion: Compared to the pre-training sense of coherence score, the post-training scores were higher. The practical training led students to be self-aware of improvement in their ability to cope with stress. Conclusion: Stress coping ability can be increased through practical training.
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Yasukawa Taiki,Ohya Junichi,Kawamura Naohiro,Yoshida Yuichi,Onishi Yuki,Kohata Kazuhiro,Kakuta Yohei,Nagatani Satoshi,Kudo Yoshifumi,Shirahata Toshiyuki,Kunogi Junichi 대한척추외과학회 2022 Asian Spine Journal Vol.16 No.5
Study Design: Clinical case series.Purpose: This study aimed to report dynamization–posterior lumbar interbody fusion (PLIF), our surgical treatment for hemodialysisrelated spondyloarthropathy (HSA), and investigate patients’ postoperative course within 2 years.Overview of Literature: HSA often requires lumbar fusion surgery. Conventional PLIF for HSA may cause progressive destructive changes in the vertebral endplate, leading to progressive cage subsidence, pedicle screw loosening, and pseudoarthrosis. A dynamic stabilization system might be effective in patients with a poor bone quality. Thus, we performed “dynamization–PLIF” in hemodialysis patients with destructive vertebral endplate changes.Methods: We retrospectively examined patients with HSA who underwent dynamization–PLIF at our hospital between April 2010 and March 2018. The radiographic measurements included lumbar lordosis and local lordosis in the fused segment. The evaluation points were before surgery, immediately after surgery, 1 year after surgery, and 2 years after surgery. The preoperative and postoperative radiographic findings were compared using a paired t-test. A p-value of less than 0.05 was considered significant.Results: We included 50 patients (28 males, 22 females). Lumbar lordosis and local lordosis were significantly improved through dynamization– PLIF (lumbar lordosis, 28.4°–35.5°; local lordosis, 2.7°–12.8°; <i>p</i><0.01). The mean local lordosis was maintained throughout the postoperative course at 1- and 2-year follow-up (12.9°–12.8°, p=0.89 and 12.9°–11.8°, <i>p</i>=0.07, respectively). Solid fusion was achieved in 59 (89%) of 66 fused segments. Solid fusion of all fixed segments was achieved in 42 cases (84%). Within 2 years postoperatively, only six cases (12%) were reoperated (two, surgical debridement for surgical site infection; two, reoperation for pedicle screw loosening; one, laminectomy for epidural hematoma; one, additional fusion for adjacent segment disease).Conclusions: Dynamization–PLIF showed local lordosis improvement, a high solid fusion rate, and a low reoperation rate within 2 years of follow-up.
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