Open Multi-Access Network Platform with Dynamic Task Offloading and Intelligent Resource Monitoring

We constructed an open multi-access network platform using open-source hardware and software. The open multi-access network platform is characterized by the flexible utilization of network functions, integral management and control of wired and wireless access networks, zero-touch provisioning, intelligent resource monitoring, and dynamic task offloading. We also propose an application-driven dynamic task offloading that utilizes intelligent resource monitoring to ensure effective task processing in edge and cloud servers. For this purpose, we developed a mobile application and server applications for the open multi-access network platform. To investigate the feasibility and availability of our developed platform, we experimentally and analytically evaluated the effectiveness of application-driven dynamic task offloading and intelligent resource monitoring. The experimental results demonstrated that application-driven dynamic task offloading could reduce real-time task response time and traffic over metro and core networks

Effects of galactic magnetic field on the UHECR correlation studies with starburst galaxies

We estimate the biases caused by the coherent deflection of cosmic rays due to the Galactic magnetic field (GMF) in maximum-likelihood analysis for searches of ultrahigh-energy cosmic ray (UHECR) sources in the literature. We simulate mock event datasets with a set of assumptions for the starburst galaxy (SBG) source model (arXiv:1801.06160), coherent deflection by a GMF model (arXiv:1204.3662,arXiv:1210.7820), and mixed-mass composition (arXiv:1901.03338); we then conduct a maximum-likelihood analysis without accounting for the GMF in the same manner as previous studies. We find that the anisotropic fraction $f_{\rm ani}$ is estimated systematically lower than the true value. We estimate the true parameters which are compatible with the best-fit parameters reported in (arXiv:1801.06160), and find that except for a narrow region with a large anisotropic fraction and small separation angular scale a wide parameter space is still compatible with the experimental results. We also develop a maximum-likelihood method that takes into account the GMF model and confirm in the MC simulations that we can estimate the true parameters within a 1$\sigma$ contour under the ideal condition that we know the event-by-event mass and the GMF

Investigation of Bacteria from Spoiled Bottled Salad Dressing Leading to Gas Explosion

Background: In 2020, an incident involving spoiled salad dressing from a commercial source occurred. Upon opening the bottle, the contents exploded from gas that seemed to have fermented inside the bottle. For safety concerns, we sought to investigate the bacteria from the salad dressing in order to notify the company that made the product and relevant authorities. Methods: Anaerobic and carbon dioxide culture methods were used. To determine species of colonies, MALDI-TOF-MS and 16S rRNA whole sequencing were performed. Results: There were no colonies grown in anaerobic condition; however, we obtained three colonies from the carbon dioxide atmosphere. We determined the first colony as Alkalihalobacillus clausii (Bacillus clausii), the second as Bacillus spp. such as B. australimaris, B. safensis or B. safensis subsp. osmophilus and the third as B. paralicheniformis. Phylogenic tree analysis using the16S rRNA sequence revealed these colonies to be in a proximity of known gas-producing species. The NCBI database search revealed that a key gas production pathway gene, pyruvate formate-lyase (pfl), of which the gene product catalyzes pyruvate to formate conversion, exists in B. paralicheniformis. Formate dehydrogenase (FdhH) produces CO2 from formate that the coding gene fdhF positive bacteria can participate in gas production when formate is present in the culture. And we found fdhF from A. clausii, B. australimaris/B. safensis and B. paralicheniformis. Furthermore, under butanediol producing pathway, genes coding two enzymes involved in CO2 production, namely als and ald, existed in B. australimaris/B. safensis and B paralicheniformis, whereas A. clausii possessed als. Conclusion: Candidate species A. clausii, B. australimaris/B. safensis and B. paralicheniformis from spoiled salad dressing were thought to produce CO2 gas each from their own enzymes, or in combination, which caused the explosion upon opening. The endospore forming nature of Bacillus should alert us to be cautious when considering food producing process regulations where we need to thoroughly heat any product during manufacture in order to inactivate any bacteria as there is the possibility of this type of dangerous occurrence

Implementing a Professional Learning Community(PLC) at Special Needs Schools Focus on the Relationships among the PLC, the Curriculum Management and the Realization of passing on expertise

全国の特別支援学校〔聴覚障害部門〕を対象に，カリキュラム・マネジメントの実施や「専門職の学習共同体」の醸成，専門性の継承・向上の実現に関する質問紙調査を行った。収集したデータをもとに相互の関係性を分析した結果，「専門職の学習共同体」を醸成している学校においては専門性を継承・向上している実感が高いことが明らかとなった。また，実施するカリキュラム・マネジメントの質（内容）として「カリキュラムの『見える化』と共有の場づくり」，「カリキュラム開発のための協働の場づくり」等のカリキュラムを基軸に教職員間のつながりを深める取組を行っている学校においては，「専門職の学習共同体」の構成因子のうち「学校内の信頼関係」，「目標の共有」，「学校内外の協働」が醸成されていることが示された。このことから「専門職の学習共同体」を効果的に醸成していくためには，質の高いカリキュラム・マネジメントを実施する必要性が示唆された

Diversity of cold-adapted ciliates from glacier snow and cryoconite in Arctic region

第2回極域科学シンポジウム/第33回極域生物シンポジウム 11月18日（金） 統計数理研究所 3階セミナー室