Software Defined Media: Virtualization of Audio-Visual Services

Internet-native audio-visual services are witnessing rapid development. Among these services, object-based audio-visual services are gaining importance. In 2014, we established the Software Defined Media (SDM) consortium to target new research areas and markets involving object-based digital media and Internet-by-design audio-visual environments. In this paper, we introduce the SDM architecture that virtualizes networked audio-visual services along with the development of smart buildings and smart cities using Internet of Things (IoT) devices and smart building facilities. Moreover, we design the SDM architecture as a layered architecture to promote the development of innovative applications on the basis of rapid advancements in software-defined networking (SDN). Then, we implement a prototype system based on the architecture, present the system at an exhibition, and provide it as an SDM API to application developers at hackathons. Various types of applications are developed using the API at these events. An evaluation of SDM API access shows that the prototype SDM platform effectively provides 3D audio reproducibility and interactiveness for SDM applications.Comment: IEEE International Conference on Communications (ICC2017), Paris, France, 21-25 May 201

総義歯補綴の前臨床訓練における実際の訓練要素間の関連性(The correlation among practical training components in preclinical training of complete denture prosthodontics)

歯学生用の総義歯補綴の前臨床訓練プログラムでは、短時間で臨床手法も含む限られたテーマしか扱えないため、各テーマと訓練要素を詳細に分析して計画する必要がある。総義歯補綴の前臨床訓練を終えた歯学生79名を対象に質問票調査を行い、学生の達成度評価を行った。仮印象採得(1)、精密印象採得(2)、上下顎記録(3)、ゴシックアーチ描写(4)、蝋義歯試行(5)、義歯挿入(6)の6項目について自分で実施することができると思うかどうか尋ねた。回答は視覚的アナログ尺度での評価とした。その結果、(1)と(2)、(3)と(4)、(5)と(6)の間と(3)と(6)の間に相関係数0.7以上の正の相関が得られた。相関が見られた各組は方法または理論の上で類似性を示す項目である。本研究の結果は訓練プログラムを効果的に改良する上で有用と考えられた。歯学生用の総義歯補綴の前臨床訓練プログラムでは、短時間で臨床手法も含む限られたテーマしか扱えないため、各テーマと訓練要素を詳細に分析して計画する必要がある。総義歯補綴の前臨床訓練を終えた歯学生79名を対象に質問票調査を行い、学生の達成度評価を行った。仮印象採得(1)、精密印象採得(2)、上下顎記録(3)、ゴシックアーチ描写(4)、蝋義歯試行(5)、義歯挿入(6)の6項目について自分で実施することができると思うかどうか尋ねた。回答は視覚的アナログ尺度での評価とした。その結果、(1)と(2)、(3)と(4)、(5)と(6)の間と(3)と(6)の間に相関係数0.7以上の正の相関が得られた。相関が見られた各組は方法または理論の上で類似性を示す項目である。本研究の結果は訓練プログラムを効果的に改良する上で有用と考えられた

Rhabdomyolysis with Multiple Electrolyte Imbalances under Proton Pump Inhibitor Treatment after Total Thyroidectomy

A 90-year-old man presented with muscle weakness, difficulty concentrating, and dysphagia. About eighteen months prior to presentation, lansoprazole had been initiated to prevent stress ulcers; he also had a history of total thyroidectomy due to papillary thyroid cancer ten years prior. Laboratory findings were as follows: K 2.4 mEq/L, Ca 3.7 mg/dL, Mg 1.3 mg/dL, CK 5386 U/L, and intact PTH (iPTH) 14 pg/mL. Rhabdomyolysis with multiple electrolyte imbalances under proton pump inhibitor (PPI) treatment was diagnosed. We initiated intravenous hydration and electrolyte supplementation with discontinuation of PPI. After discontinuing PPI, the patient’s serum magnesium, potassium, and calcium levels normalised with oral vitamin D and calcium supplementation. PPIs can cause hypocalcaemia and hypokalaemia via hypomagnesemia; hypocalcaemia is also a common postoperative complication of thyroidectomy. Careful monitoring of electrolyte levels is required in patients with long-term PPI treatment, especially in post-thyroidectomy cases

A model of dynamic associative memory

金沢大学理工研究域電子情報学系A model of dynamic associative memories is proposed in this paper. The aim is to find all stored patterns, and to distinguish the stored and the spurious patterns. Aihara used chaotic neurons and showed that his model has a nonperiodic associative dynamics. In his model, however, it is difficult to distinguish the stored patterns from the others, because the state of the network changes continually. We propose such a new model of neurons that each neuron changes its output to the other when the accumulation of its internal state exceeds a certain threshold. By computer experiments, we show that the state of the network stays at the stored pattern for a while and then travels around to another pattern, and so on. Furthermore, when the number of the stored patterns is small, the stored and the spurious patterns can be distinguished using interval of the network staying these patterns

Novel device prototyping for endoscopic cell sheet transplantation using a three-dimensional printed simulator

手術負担の少ない内視鏡による心臓表面への細胞シート移植デバイスを開発 --心臓再生医療への応用を目指して--. 京都大学プレスリリース. 2020-11-20.Introduction: Considering higher risks of candidates for cardiac regenerative therapy with compromised cardiac function, it is anticipated to develop less invasive surgical procedures. In the present study, we aimed to develop a prototype of totally endoscopic cell sheet delivery device and evaluate the surgical technique for epicardial cell sheet placement using three-dimensional (3D) printed simulators based on human computed tomography data. Methods: We designed an endoscopic cell sheet delivery device with outer and inner frame with self-expandable applicator which can be opened in thoracic cavity. We launched spout line to provide liquids on the applicator surface and tension line to gently bend the applicator dorsally. We prepared human mesenchymal stem cell (MSC) sheets and compared wet/dry conditions of 3D printed heart/porcine heart and applicator to identify suitable conditions for cell sheet transplantation. Finally we validated the feasibility of endoscopic transplantation to anterior and lateral wall of left ventricle using 3D printed simulators. Results: Moist condition of both 3D printed heart/porcine heart surface and applicator at transplantation yielded highest successful rate (100%, p = 0.0197). For both endoscopic transplantation sites, MSC sheets were successfully deployed. The procedure duration was 157 ± 23 s for anterior wall and 123 ± 13 s for the lateral wall in average, respectively. Conclusions: We developed a novel prototype of endoscopic cell sheet delivery device for minimally-invasive cardiac regenerative therapy utilizing a 3D printed simulator. The commercialization of the prototype may provide a safe minimally-invasive method to deliver potential cardiac regenerative therapy in the future