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A study on neural network-aided prediction of pseudo-range correction in GNSS differential positioning
Get PDF全地球航法衛星システム(GNSS: Global Navigation Satellite System)による測位では，非線形連立方程式を重み付き最小二乗法により解くことで受信機の位置を推定する．しかし，この非線形連立方程式はクロック誤差やマルチパスなどの外乱を含んでおり，測位結果に誤差が生じる．この外乱による測定誤差は統計的・物理的なモデルで予測することが困難だが，抽象的な表現を抽出可能なニューラルネットワークであれば外乱を抑制できる可能性が高い．本検討では，複数の基準局を利用して収集したGNSS測定データを学習し，擬似距離誤差を調整する順伝播型ニューラルネットワーク(FFNN: Feed Forward Neural Network)を検討する．複数の環境で採取したGNSS測定データは，周辺環境に依存する擬似距離誤差を正確に表現できる可能性がある．FFNNで推定した補正値で擬似距離誤差を調整し，測位結果を評価して複数の基準局で学習させたニューラルネットワークを用いた擬似距離補正の有効性を示す．In the global navigation satellite system (GNSS), the receiver position is estimated by solving the nonlinear simultaneous equation by the iterative weighted least squares method. However, these nonlinear simultaneous equations include external factors, such as clock errors and multipath, which induce position estimation errors. Although this measurement error due to external factors is difficult to predict with statistical and physical models, it is necessary to predict this error in order to improve positioning accuracy. In this study, we consider the feed-forward neural network (FFNN) that learns GNSS measurement data collected using multiple base stations to estimate the pseudo-range error. GNSS measurement data collected in multiple environments are likely to accurately represent the pseudo-range error that depends on the surrounding environment. Correct the pseudo-range error with the correction value estimated by the FFNN and evaluate the positioning result. This paper shows the effectiveness of pseudo-range correction using neural networks trained on multiple base stations.原著論文departmental bulletin pape
Influence of the demonstrator's gaze direction on observer's perception of distance during the observational learning of sequential gross movement
Get PDF運動技能の観察学習においてモデルの視線が学習者の主観的距離感に影響すると考えられる．本研究はモデル観察角度と身体動揺，そして観察学習効果との関係について検討することを目的とした．本研究の結果から，大筋的系列動作の観察時においてモデルの視線は学習者の主観的距離感と身体動揺に影響しないが，モデル正面からの観察は背面からの観察に比べて無意識のうちに後ろ方向へ身体を動かす傾向があると言える．The observation angle of the demonstrator may influence the observer's subjective perception of distance during the observational learning of sequential gross movement. We investigated whether the demonstrator's gaze direction influences the observer's postural sway during observation, and examined its effects on observational learning. The results suggest that the direction of the demonstrator's gaze does not affect the observer's subjective perception of distance and the postural sway during observation of sequential gross movement; however, the observation from a facing angle tends to affect the sway of unconsciously moving the body backward more than the observation from a rear angle.原著(Original paper)departmental bulletin pape
Sports consumer behavior in an urban marathon : where have runners gone after the COVID-19 pandemic?
Get PDF本稿では, 奈良マラソン2022に参加したランナーを対象とした調査をもとに, コロナ禍によるマラソン大会参加者数の減少について検討した. 有効回答者(2301名)の16.7%がコロナ禍前と比較してマラソン大会への参加意欲が減り, 年間参加大会数についても37.8%が減ったと回答した. また, 多くのランナーが年間の参加大会数が減った原因として「参加料が高くなった」, 「エントリー後に中止にならないか不安(参加料の扱いが不透明)」を挙げた.This paper examined the decline in marathon participation due to COVID-19, based on data obtained from a survey of runners who participated in the Nara Marathon 2022. As a result of this study, 16.7% of respondents indicated that they were less motivated to participate in marathons than before COVID-19, and 37.8% stated that they participated in fewer marathons per year. Many runners also cited "higher participation fees" and "Concerns about cancellations after entry (uncertainty about how entry fees will be handled)" as reasons for the decrease in the number of events they participate in per year.原著(Original paper)departmental bulletin pape
A scoping review regarding the present situation of Sport for Development and Peace (SDP)
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Participation report of the 27th Annual Congress of the European College of Sport Science
Get PDF参加レポート(Report of participation)departmental bulletin pape
Introduction to the Nara-e Tale of Genji shikishi, owned by the Faculty of Culture and Information Science, Doshisha University (3)
Get PDF同志社大学文化情報学部蔵「奈良絵源氏物語色紙」は、『源氏物語』の場面を一枚につき一場面ずつ描いた、「捲り」（屏風や襖などに貼ってあった絵を剥がしたもの）の状態の源氏絵、二十四枚である。製作年代は江戸時代中期頃と推察される。本稿は、絵の図柄について、『源氏物語』の巻や場面を特定し、いわゆる源氏絵の系譜の中に位置づけるものである。名だたる絵師が描いた作品でないことは一瞥して明白であるが、江戸期における源氏絵の類型の広がりを知る一助にはなるであろう。『源氏物語』の巻順に従い、今回は、篝火・野分・行幸・梅枝・若菜上・柏木・匂宮・椎本の絵を取り上げる。そして最後に、全二十四枚を通したまとめの考察をおこなう。The Nara-e Tale of Genji Shikishi owned by the Faculty of Culture and Information Science, Doshisha University is a collection of pictures depicting scenes from The Tale of Genji. The pictures pasted on the folding screens and sliding doors have been peeled off. There are twenty-four. It is estimated to have been produced in the middle of the Edo period. The purpose of this paper is to identify scenes from The Tale of Genji and position them in the genealogy of Genji-e. Although these paintings are clearly not the work of a famous painter, they help give an idea of the breadth of Genji paintings in the Edo period. This time, we will take up paintings by Kagaribi, Nowaki, Miyuki, Umegae wakananojyou, Kashiwagi, Niounomiya and Shiigamoto. And finally, I will consider all twenty-four pictures.資料(Material)departmental bulletin pape
Scope of deliberative process privilege under FOIA : U.S. Fish & Wildlife Serv. v. Sierra Club Inc.
Get PDF太田裕之教授退職記念論集Dedicated to Professor Hiroyuki Ota on his retirementdepartmental bulletin pape
Abandonment of a corpse by act and omission
Get PDF太田裕之教授退職記念論集Dedicated to Professor Hiroyuki Ota on his retirementdepartmental bulletin pape
Platforms to become "broadcasters" under the new Canadian online streaming act : a critical review of the Canadian content rule
Get PDF近年、YouTubeなどのプラットフォームの普及により、既存メディアは聴衆を失いつつある。北米では地方紙はじめローカル・メディアの閉鎖が相次いでいる。そこでカナダは、プラットフォームを放送メディアに含める放送法改正を実施して、カナディアン・コンテンツ規制と呼ばれるカナダ独自の放送規制により、プラットフォーム事業者に対し、カナダ文化の維持発展に寄与することを義務付けようとしている。Online Video Platforms (OVPs) such as Netflix, YouTube, and Amazon Prime Video are eroding the market for legacy media. Not only newspapers but also radio and TV are losing their audiences worldwide. Canadian legislature has taken a unique countermeasure which is an attempt to revise its Broadcast Law to classify OVPs as a form of broadcast media. If this enactment becomes successful, OVPs must adhere to the Canadian Content Rule that has been regulated radio and TV in Canada for decades.太田裕之教授退職記念論集Dedicated to Professor Hiroyuki Ota on his retirement本論執筆中、カナダ議会で審議中であったカナダ放送法改正法案C-11(通称「オンライン・ストリーミング・アクト」)は、2023年4月27日に成立した。departmental bulletin pape
The article 13 of the Japanese constitution and the "right to keep silence"
Get PDF太田裕之教授退職記念論集Dedicated to Professor Hiroyuki Ota on his retirementdepartmental bulletin pape