CS経営の特性と今後のインダストリアル・マーケティングの展開-顧客の購買活動に対応したカストマーサービス活動を中心に-

Articledepartmental bulletin pape

Webインテリジェンスに基づくユーザの知的活動支援に関する研究

名古屋工業大学博士(工学)Doctor of Engineering主査：新谷　虎松doctoral thesi

Metal-free design of a multilayered metamaterial with chirped Bragg grating for enhanced radiative cooling

A wideband, all-dielectric metamaterial structure for enhancing radiative cooling is investigated. The structure is optimized to reflect most of the solar irradiance window (between 0.3 µm–3 µm), which is one of the biggest challenges in highly efficient radiative cooling coatings. The design is based on the principles of Bragg gratings, which constitutes a simple synthesis procedure to make a broadband reflector of reduced dimensions, without metallic layers, while keeping a flat enough response in the entire bandwidth. Numerical results show that reflection of solar irradiation can be easily tailored and maximized using this method, as well as the net cooling power of the device, about ∼79 W/m2 at daytime (about double at night-time) and a temperature reduction of 23 K (assuming no heat exchange) and 7 K assuming a heat exchange coefficient of 10 W/m2/K, for a device and ambient temperatures of 300 K and 303 K, respectively. This occurs even in detriment of absorption in the atmospheric window (8 µm–13 µm). Results also show the importance of efficiently reflecting solar irradiance for such technologies and its relevance in synthesis and design without using metallic components.European Commission (Next Generation, PRTR, TED2021-132074B-C33); Ministerio de Ciencia e Innovación (TED2021-132074B-C33); Gobierno de Navarra (PC048-049-DisenIA)

Design of multi-layered radiative cooling structures using evolutionary algorithms

In this work we present a novel way to design thinfilm radiative cooling metamaterials based on genetic algorithms. Three simulations with different design constraints have been done, resulting in three structures that achieve 39.96 W/m2 , 57.78 W/m2 and 61.77 W/m2 under direct sunlight, respectively. These structures are shorter than 5 µm of height and are composed of 9, 15 and 24 layers. This design method has the advantages of being automatable, needs fewer design experience in metamaterials and does not rely on commercial simulators. This work opens the path to an easy way of automated design of thin-film multi-layered devices for radiative cooling and other applications in the infrared range.This work has been performed in the frame of the project “Algoritmos EVOlutivos aplicados a dispositivos de enfriamiento radiativo pasivo ultracompactos basados en METAsuperficies” (AEVOMETA II), funded by the Government of Navarre

保育者・教員養成における保幼小連携のための音楽教育に関する一考察

資料Brief Reportsdepartmental bulletin pape

Evolutionary algorithms applied to multi-layered radiative cooling metamaterials

A newly design method for designing multi-layered radiative cooling metamaterials based on genetic algorithms (GAs) is exposed. The developed GA has been tested in three cases, resulting in three different structures that achieve, theoretically under direct sunlight, a net cooling power of 39.96 W/m 2 , 57.78 W/m 2 and 61.77 W/m 2 . Such devices are composed of 9, 15 and 24 layers respectively with a total thickness of less than 4.8 µm in the worst case. By the nature of the method, fewer design experience in metamaterials is needed, as well as it is free-cost, due to the use of analytical calculations for the emissivity of the meta materials instead of a commercial generic electromagnetic solver. Automated design of radiative cooling multi-layered structures and other applications in the infrared range can be further developed with this work.This work has been performed in the frame of the project "Algoritmos EVOlutivos aplicados a dispositivos de enfriamiento radiativo pasivo ultracompactos basados en METAsuperficies (AEVOMETA II), funded by the Government of Navarre

Enhancing the infrared and visible emission properties of calcium silicate hydrate for radiative cooling using metamaterials

Two periodic structures composed of metal cylinders with different orientations are used to improve the solar reflection of calcium silicate hydrate (CSH) while maintaining its atmospheric emission. Interesting effects have been found when the distance between bars is small, suggesting that lattice effects, arising from the interaction between the rods could be leveraged in the design of these metamaterials. The size of the metal bars is selected based on state of the art micro-manufacturing techniques. This study limits its scope to a CSH gel model; i.e. the most important component of cement-based materials. Further research will be undertaken to consider a best description of the dielectric function of concrete.This work has been funded by the research and innovation program Horizon 2020 of the European union. Project MIRACLE, Grant Agreement 964450

On An Identification of Point Spread Function of Images Blurred by Object Motion in Horizontal Direction -Part Ⅰ

publisherThis paper deals with an identification of point spread function (PSF) of noisy images degraded by object motion in horizontal direction. First, assuming a spatial correlation of exponential form and separable variables, the image signal is modeled by a stationary process at the output of a discrete-time linear dynamical system randomly excited. Next, the motion blur is represented by a PSF and a Kalman estimator for noisy images of known PSF is derived. Finally, by examining the relation between an assumed PSF and the theoretical improvement index of the estimator, it is revealed that the gain estimation is most important in PSF identification. This result is very useful for finding a PSF identification method.departmental bulletin pape

乳幼児期の体重増加と学童期のインスリン抵抗性との関係に関する系統的・探索的解析

第3回日本DOHaD研究会学術集会 抄録集 【ポスター発表】journal articl

What Does“ MIMAMORU ” Mean to after-school child care workers ? －An Analysis of Focus Group Interviews Using SCAT－

「見守る」は，保育や教育の中で重要な行為である。それは，放課後児童クラブにおいても同様である。では，放課後児童支援員は具体的には，「見守る」行為をどのように理解しているのであろうか。本研究では，ベテランの放課後児童支援員にフォーカス・グループ・インタビューを行い，SCATを用いて分析した。その結果，放課後児童支援員の「見守る」には，学童保育の文化の中で培われてきた家族集団をロールモデルとした行為選択が反映していることが分かった。こうした研究成果の蓄積は，放課後児童支援員の研修や養成にも反映することが期待できる。departmental bulletin pape