http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
A Nationwide Study on Optical Analysis for Expecting HEOs to Support Ambulances
Nakajima, Isao,Tsuda, Kazuhide,Juzoji, Hiroshi,Ta, Masuhisa,Nakajima, Atsushi Korea Multimedia Society 2019 The journal of multimedia information system Vol.6 No.2
This paper deals with actual optical data from rural as well as urban areas in a nationwide study captured with Fisheye cameras. Simultaneously data was collected (of the receiving power density) from the mobile communications satellite N-STAR. The visibility of the satellite is easily determined by checking the value of the pixels in the binarized fisheye image of its position. The process of determining the visible satellite is automatically performed. Based on the analyses of the field data measured in Japan, we are expecting HEOs (Highly inclined Elliptical Orbiters) that would reduce blockage in the extreme northern region of Wakkanai City well as in the most crowded urban area, in Tokyo Ginza. In case of HEOs operation, the elevation angle will improve from 37 with N-STAR GEO to 75 degrees. HEOs could replace 5G/Ka-band or support in rural areas where broadband circuit is not available. We are proposing combination operations with HEOs and 5G/Ka-band to solve blockage problems, because HEOs can keep line-of-sight propagation with high elevation angle for long duration. In such operations, the communications profile on the vehicle based on actual optical data will be very useful to predict blockages and to select/switch a suitable circuit.
Atsushi Nakajima,Mio Fujimaki,Yuki Arai,Kento Emori 대한소화기 기능성질환·운동학회 2022 Journal of Neurogastroenterology and Motility (JNM Vol.28 No.3
Background/AimsElobixibat, an ileal bile acid transporter (apical sodium-dependent bile acid transporter) inhibitor, was recently launched in Japan for the treatment of chronic idiopathic constipation. We conducted an interim analysis of post-marketing surveillance to evaluate the safety and efficacy of elobixibat in elderly patients with chronic constipation and compared the efficacy according to administration time. MethodsSafety and efficacy outcomes were evaluated through patient interviews for 4 weeks. ResultsAdverse drug reactions (ADRs) were observed in 5.24% of the 1049 patients analyzed; diarrhea (2.19%) and abdominal pain (1.81%) were the most common. A serious ADR of death was reported in one patient (0.10%). The incidence of ADRs in the ≥ 65-year old or ≥ 75-year-old subpopulation was similar to that in the total patient population. Mean bowel movements per week significantly increased from 2.9 ± 2.5 at baseline to 5.0 ± 3.1 (P < 0.001) at Week 2 and 5.3 ± 2.6 (P < 0.001) at Week 4. The mean Bristol Stool Form Scale score significantly increased from 2.3 ± 1.4 at baseline to 3.8 ± 1.3 (P < 0.001) at Week 2 and 3.9 ± 1.1 at Week 4 (P < 0.001). Bowel movements significantly increased in the elderly population and subpopulations receiving elobixibat before breakfast, lunch, or dinner. The median time to bowel movement was 5 hours. ConclusionThe results suggested that elobixibat was well-tolerated and efficacious in elderly patients with chronic constipation and can be administered before any meals.
Nakajima, Kyouhei,Umemura, Atsushi,Takahashi, Rion,Tamura, Junji Journal of International Conference on Electrical 2013 Journal of international Conference on Electrical Vol.2 No.3
As a number of wind power generation systems have been installed in power systems in the world, frequency fluctuations due to output power variations from wind farms have become a serious problem. Battery systems have been studied for smoothing the output variations and decreasing the resulting frequency fluctuations. Among these studies, efficient design of battery systems is one of the most important subjects from a point of view of cost. This paper presents a comparative analysis of the smoothing effect between the conventional moving average method and a new method based on frequency response analysis.
Development of an Advanced Wide-area Special Protection System
Nakajima, Akino,Morita, Makoto,Hayashi, Takuya,Takeyasu, Takatoshi,Kurose, Ken,Aramaki, Takuo,Kadokami, Atsushi 대한전기학회 2013 The Journal of International Council on Electrical Vol.3 No.4
As a countermeasure against the problem of frequency and dynamic stability caused by drops in a large capacity generator, a wide-area special protection system called the Block System Stabilizer (BSS) has been used for the last approx. 40 years by the Kansai Electric Power Company. The conventional BSS has been updated as the Bulk Power System Stabilizer. The new BSS has been developed based on the concept of improving fault detection functions, concomitant with changing the power system configuration from radial to loop, and thereby enhancing human operational functions.
Laparoscopic and Robotic Liver Resection Using Advanced 3D Liver Simulation Software
( Atsushi Sugioka ),( Yutaro Kato ),( Yoshinao Tanahashi ),( Tadashi Kagawa ),( Masayuki Kojima ),( Sanae Nakajima ),( Syo-ichiro Tsuji ),( Ichiro Uyama ) 대한간학회 2016 춘·추계 학술대회 (KASL) Vol.2016 No.1
Background: Minimally invasive liver resection including laparoscopic and robotic liver resection is a rapidly developing field withthe greatest potential. However, the spatial disorientation is one of the biggest issues that would increase the risk of dangerousbleeding and bile leakage. To overcome this issue, it is of crucial importance to standardize anatomical liver resection with extrahepaticGlissonean pedicle-first approach and to use advanced 3D liver simulation software that can visualize the Glissoneansystem.Methods: We proposed a novel concept of liver anatomy based on Laennec’s capsule that can standardize the extrahepaticGlissonean pedicle approach. Whereas Synapse 3D® is the first simulation software to use face recognition technology for clinical3D simulation and visualization of the Glissonean system are available since version 4.4.Results: Owing to the novel concept of liver anatomy, anatomical liver resection with extrahepatic Glissonean pedicle-first approachwas standardized and target area was well recognized prior to parenchymal dissection with minimal bleeding and bileleakage from the resecting plane. Preoperative 3D simulation and intraoperative navigation contributed to perform systematicanatomical liver resection without spatial disorientation even for the cases with anatomical abnormalities such as right-sidedligamentum teres.Conclusion: Minimally invasive liver resection including laparoscopic and robotic resection became safe and curable procedureswith the novel concept of liver anatomy and advanced 3D liver simulation.
Noninvasive diagnosis of NAFLD
( Masato Yoneda ),( Kento Imajo ),( Satoru Saito ),( Atsushi Nakajima ) 대한간학회 2012 춘·추계 학술대회 (KASL) Vol.2012 No.1
Nonalcoholic fatty liver disease (NAFLD) and nonalcoholic steatohepatitis (NASH) is an important cause of chronic liver injury in many countries around the world. The degree of liver fibrosis must be estimated to determine the prognosis, surveillance, and optimal treatment for NAFLD/NASH, similar to the situation for other liver diseases. Liver biopsy remains the gold standard for evaluating the degree of hepatic fibrosis. However, liver biopsy is an invasive and expensive method and is associated with a relatively high risk of complications. Furthermore it is impossible to enforce liver biopsy in all NAFLD patients, because the number of NAFLD patients has reached 80-100 million in the U.S. and about 5-10 million NAFLD patients are estimated to exist even in Korea. Thus, a rapid and noninvasive method of detecting fibrosis in patients with NAFLD is of major clinical interest. Several noninvasive investigations, such as serum biomarkers, scoring systems, imaging method have been developed to establish the diagnosis of NASH. First, we validated scoring systems (FIB4 index, AST/ALT ratio, AST to platelet ratio, Age-platelet index, NAFLD fibrosis score, BARD score) in biopsy-proven Asian population (n=576). Next, we investigated the clinical usefulness of ultrasound-based elastography such as transientelastography (Fibroscan) and Acoustic Radiation Force Impulse (ARFI) Elastography for detecting the advanced fibrosis in NAFLD patients. The major advantages of transient elastography and ARFI elastography, as compared with liver biopsy, are that these techniques are painless, rapid, and have no associated complications, and are, therefore, very easily accepted by the patients. It is not uncommon for patients to present with the complications of previously unrecognized cirrhosis despite being under long-standing medical care, because these patients often do not manifest the classic physical changes associated with cirrhosis. By using these noninvasive scoring systems and/or imaging methods, efficient recruitment of NASH patients with advanced stage may be facilitated.