Fundamental Study to Create a Joint Modeling Bringing up a Skill to Build a Relationship in a Childcare Facility

近年の社会変化により，子どもの遊びには変化が見られ，主体性を発揮して夢中になれる活動や，友達とやりとりをしながら創造性を発揮する機会が，必要とされている。つまり，遊びを通した子ども同士の関わりは，道徳性・社会性を育み，人間関係形成能力を育むための重要な課題であると指摘できる。人間関係形成能力を育むための活動の１つとして，共同造形制作が考えられる。本論では，子ども同士の関わりを作る造形表現活動の実践は，１人では作ることができない大きな作品で，アイデアを多く必要とする「寄せがき方式」の制作遊びを設定して行うことが望ましいと考えられる。創造的な遊びには，子どもにとって友達とイメージを共有して作る要素が多く，テーマや色や形を工夫していくことができると考える。Due to recent social changes, we can see changes in how children play and it is required to have activities that they can really into by exercising independence or opportunities in which they can exercise creativity by communicating with friends. Accordingly, we can indicate that communication among children through playing will be an important issue to grow morality and sociality as well as growing skills to build a relationship. As one of activities to grow skills to build a relationship, we can consider a joint modeling. In this study, we consider that practices of activities to express modeling that build a relationship among children should be a big work that cannot be created alone therefore it is desirable to proceed such practices by setting a play to create a “message method” that require a lot of ideas. Creative play has many elements created by sharing images with friends for children and we consider that they can devise themes, colors, and shapes

Sugoroku Play through Collaborative Molding Creation to Develop Skills to Establish Relationship among Children in 4-Year-Old Class of Nursery School

人間関係形成能力を育むための活動の１つとして，共同造形制作が考えられる。共同造形制作は，１人では作ることができない大きな作品で，着想を多く必要とする「寄せがき方式」の制作遊びを設定して行うことが望ましい。そこで，具体的な保育実践案として双六遊びを行い，人間関係形成能力育成における有効性の検証と，保育者に求められる指導・援助方法の考察を行った。双六の制作は，友達の発言や行動に関心を持ちやすい環境で行われ，話し合いによって色や形を工夫することができた。また，双六遊びの偶然性やルール作りの必要性から，発達過程に適合した楽しい遊びを通して友達と深く関われる活動であったと言える。保育者の援助においては，子どもが人間関係を形成する上で，イメージの共有を促す声掛けが必要であると共に，保育者が介入しない見守りも重要であった。We can consider that one of activities to develop skills to establish relationship is collaborative molding creation. Collaborative modeling creation is a large piece of work that cannot be created by a single person, and it is desirable to set up a "Yosegaki type" of creation play that requires a lot of inspiration. Accordingly, we conducted Sugoroku play as a detailed nursing practice idea to verify its effectiveness in developing skill to establish relationship and considered the teaching and support methods required of childcare-givers. Sugoroku was made in an environment where children were able to pay attention to what their friends said and did, and they were able to devise colors and shapes through discussion. Moreover, from the coincidental nature of Sugoroku play and the necessity of making rules, we could say that it was an activity to be deeply involved with friends through fun play adapted to the developmental process. In assisting childcare-givers, it was important to encourage children to share images and to watch them without intervention by childcare-givers in developing relationship among children

Discovery of novel replication proteins for large plasmids in cyanobacteria and their potential applications in genetic engineering

Numerous cyanobacteria capable of oxygenic photosynthesis possess multiple large plasmids exceeding 100 kbp in size. These plasmids are believed to have distinct replication and distribution mechanisms, as they coexist within cells without causing incompatibilities between plasmids. However, information on plasmid replication proteins (Rep) in cyanobacteria is limited. Synechocystis sp. PCC 6803 hosts four large plasmids, pSYSM, pSYSX, pSYSA, and pSYSG, but Rep proteins for these plasmids, except for CyRepA1 on pSYSA, are unknown. Using Autonomous Replication sequencing (AR-seq), we identified two potential Rep genes in Synechocystis 6803, slr6031 and slr6090, both located on pSYSX. The corresponding Rep candidates, Slr6031 and Slr6090, share structural similarities with Rep-associated proteins of other bacteria and homologs were also identified in various cyanobacteria. We observed autonomous replication activity for Slr6031 and Slr6090 in Synechococcus elongatus PCC 7942 by fusing their genes with a construct expressing GFP and introducing them via transformation. The slr6031/slr6090-containing plasmids exhibited lower copy numbers and instability in Synechococcus 7942 cells compared to the expression vector pYS. While recombination occurred in the case of slr6090, the engineered plasmid with slr6031 coexisted with plasmids encoding CyRepA1 or Slr6090 in Synechococcus 7942 cells, indicating the compatibility of Slr6031 and Slr6090 with CyRepA1. Based on these results, we designated Slr6031 and Slr6090 as CyRepX1 (Cyanobacterial Rep-related protein encoded on pSYSX) and CyRepX2, respectively, demonstrating that pSYSX is a plasmid with “two Reps in one plasmid.” Furthermore, we determined the copy number and stability of plasmids with cyanobacterial Reps in Synechococcus 7942 and Synechocystis 6803 to elucidate their potential applications. The novel properties of CyRepX1 and 2, as revealed by this study, hold promise for the development of innovative genetic engineering tools in cyanobacteria

Study of plastic scintillator based reactor neutrino detector

Recently nuclear power plant becomes one of the important electric power sources to reduce the greenhouse gasses emission. Nuclear reactor fuel consists of the uranium-235 (235U) enriched uranium and produces the thermal energy via nuclear fission process. Through the reactor operation, uranium-238 (238U) fission also produces the plutonium- 239 (239Pu), which should be strictly under controlled to avoid the diversion to the nuclear weapon for a nonproliferation and safeguard. At this point, monitoring of the nuclear power plant operation and its fuels exchange have important role for the peaceful nuclear energy usage. In this study, we produce the prototype of nuclear reactor monitor based on the plastic scintillator detecting anti-neutrinos, which produced through the several times of beta-decay from the nuclear fission products. In addition, we apply the monitoring performance simulation assuming the 1 ton size detector placed very closely to the reactor core

PETREL for Astrophysics and Carbon Business

A multi-purpose 50kg class microsatellite hosting astrophysical mission and earth remote sensing, PETREL , will be launched in 2023. In the night side, PETREL observe the ultra-violet sky with a wide-field telescope covering 50 deg^2 for surveying transient objects related to supernovae, tidal disruption events, and gravitational wave events. Our UV telescope can detect the early phase UV emission from a neutron star merger occurred within 150 Mpc. In addition to the satellite observation, PETREL sends a detection alert including the coordinate and brightness of the UV transient to the ground via the real time communication network within several minutes after detection to conduct follow-up observations with the collaborating ground based observatories over the world. In the day side, PETREL observes the surface of the earth by using the tunable multi-spectral cameras and a ultra-compact hyperspectral camera. Our potential targets are the tropical forests (Green Carbon) and coastal zones (Blue Carbon) in the tropical areas to evaluating the global biological carbon strages. For this purpose PETREL will conduct multiple scale mapping collaborating with drones and small aircraft not only satellite. The obtained data will be used for academical research and for business applications. The technical difficulty of this satellite is that carries out multi-purpose with different requirements, such as astronomical observations which requires a quite high attitude stability and the earth observations requiring a high pointing accuracy, with limited resources. If it is possible, a novel small satellite system or a business style can be realized that can share the payload with academia and industry. PETREL has been adopted as Innovative Satellite Technology Demonstration Program No.3 led by JAXA, and development is underway with the aim of launching in FY2023

Research and Design of a Routing Protocol in Large-Scale Wireless Sensor Networks

无线传感器网络，作为全球未来十大技术之一，集成了传感器技术、嵌入式计算技术、分布式信息处理和自组织网技术，可实时感知、采集、处理、传输网络分布区域内的各种信息数据，在军事国防、生物医疗、环境监测、抢险救灾、防恐反恐、危险区域远程控制等领域具有十分广阔的应用前景。 本文研究分析了无线传感器网络的已有路由协议，并针对大规模的无线传感器网络设计了一种树状路由协议，它根据节点地址信息来形成路由，从而简化了复杂繁冗的路由表查找和维护，节省了不必要的开销，提高了路由效率，实现了快速有效的数据传输。 为支持此路由协议本文提出了一种自适应动态地址分配算——ADAR（AdaptiveDynamicAddre...As one of the ten high technologies in the future, wireless sensor network, which is the integration of micro-sensors, embedded computing, modern network and Ad Hoc technologies, can apperceive, collect, process and transmit various information data within the region. It can be used in military defense, biomedical, environmental monitoring, disaster relief, counter-terrorism, remote control of haz...学位：工学硕士院系专业：信息科学与技术学院通信工程系_通信与信息系统学号：2332007115216

Motion and coalescence of a pair of bubbles rising side by side

Bouncing and coalescence of a pair of slightly deformed bubbles rising side by side in a quiescent liquid are experimentally studied. The trajectories and shapes of the bubbles are investigated in detail by using a high-speed video camera. The wakes of bubbles are visualized by using a photochromic dye that is colored with UV light irradiation. We observe that the patterns of the trajectories of rising bubbles are strongly dependent on the Reynolds number. When the Reynolds number is over the critical region, two bubbles approach each other and then collide. After the collision, two types of motions are observed-coalescence and bouncing. We investigate the critical Reynolds number and Weber number over which the bubbles bounce. In the definitions of these numbers, we use vertical velocity, instead of horizontal one, as the characteristic velocity. We clarify that the critical Weber number is around 2 regardless of the Morton number. The critical Reynolds number decreases with an increase in the Morton number. Moreover, the visualization of the wake of bubbles enables us to observe the vortex separation from the rear surface of the bubbles on collision. We find that the vortex separation from the rear of bouncing bubbles causes a decrease in the rising velocity and an increase in the horizontal speed after their collision. We also observe that the behavior of repeatedly bouncing bubbles is significantly influenced by the wake instability of a single bubble rather than by the bubble-bubble interaction. By applying an existing model for spherical bubble-bubble interaction, we clarify that the revised model accurately describes the trajectory of a pair of slightly deformed bubbles using the restitution coefficient and velocity fluctuation from the experimental results

Construction of distributed computing site DIRAC.NDU.jp for Belle II experiment

We have constructed a new distributed computing site, called DIRAC.NDU.jp, in The Nippon Dental University School of Life Dentistry at Niigata (NDU) aiming for the Monte Carlo (MC) simulation data productionfor Belle II experiment [1]. In this article, we introduce the details of DIRAC.NDU.jp and the situation of the performances of our site