本研究は，CBTの特性を活かした教科・科目ベースの数学・理科問題を試作し，CBTで測れる能力を明確にしていくことを主目的として継続的に実施してきている．2017年までは解答用紙を用いた筆記型解答方式を採用してきたが，今回，解答形式が選択肢式と短答式の設問について，オンライン解答入力システムを試作し，タブレット端末に解答を直接入力する方式を試みた．特に，短答式については手書き文字・数式認識入力システムを組込んだ．本稿では，それらのシステムを用いた小規模パイロット調査の実施結果までの報告を行う．

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The photon aiid dilcpton omission rates from quark gluou plasma and hot hadroiiic matter have been evaluated. The in-medium modifications of the particles appealing in the internal loop of the self energy diagram are taken into account by vising a phenomeuological effective Lagrangian approach, Brown-Rho and Nambu scaling scenarios. We note that the in-medium effects on the low invariant mass distribution of dilcptoii and transverse momentum spectra of photon are clearly visible.

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本研究は，CBTの特性を活かした教科・科目ベースの問題を試作し，CBTで測れる能力を明確にしていくことを主目的として継続的に実施してきている．問題提示は電子媒体であるが，解答は2017年までは解答用紙を用いた筆記型解答方式のみ，2018年からは解答形式が選択肢式と短答式の設問について，オンライン解答入力システムを試作し，タブレット端末に解答を直接入力する方式も試みている．特に，短答式については手書き文字・数式認識入力システムを組込み，パイロット調査を経て，2019年に高校生を対象にしたモニター調査を実施した．本稿では，モニター調査の実施結果を踏まえ，開発したシステムの検討を行う．

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喉頭画像・音声・声の基本周波数・音響解析結果等を時間軸を一致させて記録保存し結果を二次利用することが，誰でも簡単に行えるようになった。検査をする側の技術的な問題は解決されたため，次に，検査の説明を受ける側（被検者，家族，医療関係者，医師等）の環境整備が必要と考えられた。喉頭動画像および解析結果（声の基本周波数，音響解析結果等）を，各個人が自由に同時にリアルタイムに見られるようにしておく必要がある。今回われわれは，インターネット関連技術のWebRTCとH.264等を用いることにより，一般的に使用されているWi-Fiを用いて，iOS, Androidいずれの携帯端末が混在している環境でもリアルタイムに動画像が共有できることを確認した。

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Routine health care is necessary to prevent lifestyle-related diseases that have a high proportion as death cause of the Japanese. At present, the use of plethysmogram as a means of health care is noticed. And the plethysmogram can measure arteriosclerosis which is the cause of lifestyle-related disease. However, the measurement of arterial stiffness has a problem that the measurement cannot be carried out unless it goes to a specialized medical institution, and the time and action are restricted during measurement. The conventional plethysmogram measurement is performed using red light, but in recent years, it is noticed that the plethysmogram measurement of green light is better. In order to solve these problems, we will manufacture a wearable arterial stiffness measurement system using green LEDs.

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This paper presents the feasibility study of ejector-based cooling cycle with three hydrocarbon refrigerants- propane, isobutane and n-butane. The theoretical analysis method for ejector is based on the combination of constant-area-ejector theory and a newly available shock circle model definition. The rigorous thermodynamic property equations of state for the refrigerants are used to incorporate the non-ideality of real fluid, especially near saturation and in two-phase equilibrium. Comparisons of calculation results with available measurement data reveal satisfactory agreement for both entrainment ratio and compression ratio. From the simulation results, propane shows the best performance compared to other two HCs refrigerants in the same operating conditions, especially at higher generator temperatures.

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This paper presents a design methodology for positioning sub-platform from the viewpoint of positioning for smartphone-based location-based services (LBS). To achieve this, we analyze a mechanism of positioning error generation including principles of positioning sub-systems and structure of smartphones. Specifically, we carry out the experiments of smartphone positioning performance evaluation by the smartphone basic API (Application Programming Interface) and by the wireless LAN in various environments. Then, we describe the importance of considering three layers as follows: 1) the lower layer that caused by positioning sub-systems, e.g., GPS, wireless LAN, mobile base stations, and so on; 2) the middle layer that caused by functions provided from the platform such as Android and iOS; 3) the upper layer that caused by operation algorithm of applications on the platform.

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今回我々は6ヶ月齢児の顔面神経麻痺の1例を経験した。本邦では，顔面神経麻痺の評価法として主に柳原法が使用されているが，乳児は指示に従えないため柳原法での評価が難しい。そこで我々は，小児顔面神経麻痺の評価に有用とされるトリアージ10点法を用いて経過を追った。トリアージ10点法は，評価項目を「額のしわ寄せ」・「強い閉眼」・「イーと歯を見せる」の3表情に限定し，動作の速度の左右差も評価対象としている。動作の速度の左右差は，指示に従える年齢であれば同じ動作を複数回くり返すことにより捉えやすくなる。しかし，乳児は指示に従えないため同じ動作をくり返すことは難しく，単回の動作のみでその速度の左右差を正確に把握しなければならないため，肉眼で観察するだけでは捉えきれない場合がある。この問題に対応するために，表情筋運動を動画で記録しスロー再生にて確認する方法を試みたので報告する。

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In this paper, we propose homomorphic encryption based device owner equality verification (HE-DOEV), a new method to verify whether the owners of two devices are the same. The proposed method is expected to be used for credential sharing among devices owned by the same user. Credential sharing is essential to improve the usability of devices with hardware-assisted trusted environments, such as a secure element (SE) and a trusted execution environment (TEE), for securely storing credentials such as private keys. In the HE-DOEV method, we assume that the owner of every device is associated with a public key infrastructure (PKI) certificate issued by an identity provider (IdP), where a PKI certificate is used to authenticate the owner of a device. In the HE-DOEV method, device owner equality is collaboratively verified by user devices and IdPs that issue PKI certificates to them. The HE-DOEV method verifies device owner equality under the condition where multiple IdPs can issue PKI certificates to user devices. In addition, it can verify the equality of device owners without disclosing to others any privacy-related information such as personally identifiable information and long-lived identifiers managed by an entity. The disclosure of privacy-related information is eliminated by using homomorphic encryption. We evaluated the processing performance of a server needed for an IdP in the HE-DOEV method. The evaluation showed that the HE-DOEV method can provide a DOEV service for 100 million users by using a small-scale system in terms of the number of servers.

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This study developed a system that supports video annotation on mobile devices for non-face-to-face learning. We considered three functions supporting video annotation in the “VOVAM” system based on two surveys. It was found that learners were able to determine the evaluation contents to annotate on mobile devices. We also found that the D&D annotation function was easy to operate, and it was easy to set the target position to the time corresponding to the content that the learners wanted to annotate on the mobile device. We found that the marker overlap playback function could improve visual comprehension during reflection activities even if the markers from other evaluators were displayed on the mobile devices.

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The varunid crab Hemigrapsus longitarsis (Miers, 1879) is widely distributed in East Asia; however, morphological characters of the crab have been poorly described. Herein we redescribe the species in detail, based on the newly designated lectotype and 149 recently collected specimens from Osaka Bay, central Japan. Comparison with 60 specimens from other localities showed close agreement with one another. The species is characterized by (1) subquadrate carapace with 3 distinct anterolateral teeth, (2) carapace covered with short setae, (3) relatively small chela with large patch of dense soft setae in males, and (4) long slender ambulatory legs, with dactyli longer than respective propodi. These characters correspond to the descriptions of Hemigrapsus longitarsis in previous papers, although Sakai (1935, 1939, 1976) had made no mention of the presence of the patch of setae on the male chela. Variation and some ecological notes of the species are also reported.

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近年、数多くの新たなソーシャルゲームが多く登場している。一方で終了するソーシャルゲームも多く存在し、最近ではオフライン版のゲームなど、オフラインコンテンツを配信するものも増えている。これらオフラインコンテンツの有無によるユーザ評価が不明瞭なため、明らかにしていく必要が生まれてきている。本研究では、関連するツイートを取得し、それらを感情分析することや、終了日以降のツイートを分析することによって、オフラインコンテンツの評価を行っていく。

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