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支承交換におけるジャッキアップ時の応答を踏まえた補剛材設計手法の考察
Get PDFThere is no specific calculation example for designing the required bolts to connect the jack-up bearing stiffener and the web plate of the main girder. Then, regarding the specifications for highway bridges, there is also a way of thinking that adopt twice the reaction force. This study constructed a finite element model for a simple steel girder bridge. And the shear force generated in the bolt was compared with the design value. From analytical results, the shear force was less than 50% of the design value, adopting twice the reaction force in analytical model. Therefore, it is show that the number of bolts can be reduced, and the efficiency of the maintenance work will improve.journal articl
北海道オホーツク地域における湿雪と気象要素-2022年12月下旬の湿雪とその影響-
Get PDF2022 年12 月下旬，北海道オホーツク地域では厳冬期としては異例の湿雪が断続的に降り，倒木や停電などの雪害が生じた．そこで本研究では，各地で雪害が相次ぎ発生した12 月23 日とその前後の事例に着目し，当時の湿雪特性と湿雪をもたらした気象要素について解析した．湿雪は，特に紋別地方から網走地方南部にかけて広く分布していた．同地域で湿雪が長時間持続した原因は，低気圧が北海道東方海上に停滞したことで雪を伴う強風が同一象限（北東：オホーツク海）から吹きつけたこと，さらに平均気温0 ℃以上の日が4 日間継続したことが挙げられる．journal articl
Okhotsk Skies Kitami Institute of Technology 2023 Vol.36
Get PDF空と大地と海
◆科研費研究紹介・12…15
◆研究室ルポ・4…16
高分子化学研究室
核科学情報工学研究室
◆新しいカリキュラム・8…18
先端光通信工学
◆サークル紹介・9…19
カーリング部/アカペラサークル
◆学生の活躍・2…20
ピア・サポートの紹介articl
レビュー解析に基づく地域インバウンド観光支援に関する研究
Get PDF北見工業大学博士（工学）The COVID-19 pandemic has significantly impacted the tourism industry, including the number
of inbound tourists to Japan. While Japan had been experiencing a steady increase in inbound
tourism in recent years, the pandemic caused a sharp decline in visitor numbers in 2020. This
decline raises concerns, as Japan had set a target of attracting 60 million inbound tourists annually
by 2030. To aid in the recovery of Japan’s tourism industry post-pandemic, I propose a method
for identifying the key elements that attract the attention of inbound tourists (focus points) by
analyzing reviews of tourist sites.
Currently, there is a lack of a comprehensive and objective approach to identifying the focus
points of tourist destinations. Previous studies have relied on subjective methods such as surveys
and expert opinions, or utilized keyword extraction techniques that may not capture the full
spectrum of factors influencing tourists’ preferences. In this thesis, I present a novel method that
combines keyword extraction, scoring based on motivational factors, and principal component
analysis to pinpoint the most attention-grabbing aspects of tourist spots. By applying this
method to popular tourist destinations in Hokkaido, with a specific focus on Chinese tourists, my
study provides valuable insights into the specific elements that hold the greatest appeal for this
particular group of visitors.
In the first phase of my research, I collected a substantial number of reviews from a prominent
Chinese travel industry website that focused on popular tourist spots in Hokkaido. The goal
was to extract relevant keywords from these reviews to uncover the potential points of interest
for Chinese tourists. I used two different kinds of keyword extraction methods: TF-IDF (term
frequency-inverse document frequency) and TextRank. Through my analysis, I found that the
TF-IDF algorithm produced the most promising results in this study. By examining the extracted
keywords derived from TF-IDF, I was able to gain clear insights into the specific elements that
Chinese tourists prioritize when considering tourist destinations.
Building on this foundation, I proceeded to extract high-frequency n-gram patterns from the
reviews written by Chinese inbound tourists, with each n-gram pattern containing the previously
extracted keywords. To assess the focus of each destination, I used seven types of motivational
factors commonly associated with tourist behavior and applied principal component analysis.
This allowed us to effectively quantify and identify the distinctive features and focus points of
each tourist destination.
Subsequently, I took my analysis a step further by clustering the n-gram patterns extracted
from the tourists’ reviews. This clustering process allowed us to group similar patterns together
and delve deeper into the underlying themes and characteristics that emerged from the reviews.
By carefully examining the clustering results, I was able to provide insightful advice and recommendations to improve the overall tourist experience and develop effective industry strategies
based on the identified areas of focus.
Through this comprehensive research approach, I aimed to provide valuable insights into the
preferences and expectations of Chinese tourists when selecting and experiencing tourist sites
in Hokkaido. The results of this study can serve as a basis for industry stakeholders to tailor
their offerings and marketing strategies to better meet the interests and needs of Chinese tourists,
ultimately strengthening the tourism industry in Hokkaido and beyond.doctoral thesi
北見工業大学社会連携推進センター ニュースレター「ウィズ」 No.12
Get PDF■FOCUS
北海道中小企業家同友会オホーツク支部
との連携活動
■TOPIC
「第2回国際発酵・醸造食品産業展」へ出展
「大学見本市2023～イノベーション・
ジャパン」へ出展
「2023年度大学発ベンチャー 北海道・
オホーツク アントレプレナーシップ・
セミナー」開催
■スタッフ活動othe
Stable isotope fractionation of guest gases during the formation of air hydrate and nitrogen + methane mixed gas hydrate
Get PDF空気ハイドレートは南極やグリーンランド氷床に存在し，その包接ガスの窒素同位体比は過去の気候変動解明に利用されている．本研究では，空気が水分子と反応して空気ハイドレートに変化する際の窒素同位体分別を測定し，14 N 15 N がハイドレート相に0.1 66±0 .03 濃縮する傾向を確認した．加えて，メタン＋窒素混合系での窒素およびメタンの水素について同様の測定を行った．メタンの水素同位体分別については，ハイドレート中の窒素の割合に依存しないのに対し，窒素同位体分別に関しては，ハイドレート中の窒素の割合が少ないほど14 N 15 N がより多く包接される傾向を確認した．journal articl
融雪期まで存在した長期積雪初期の湿雪層（2022/23 年冬期，北海道北見）
Get PDFOn December 22, 2022, an extratropical cyclone with warm and moist air moved northward over the Pacific Ocean and
then stalled off the coast of Abashiri. Strong winds with moist snow continued to blow from the same dire ction over
Kitami and M onbetsu areas. The wet snow layer in the in itial stage of long term snow cover later froze and remained in
the lower part of the snow cover until the snow melting period . In this study, we report on the transformation process of
the wet snow layer based on snow profile observation during the winter of 2022/20 23 at Kitamijournal articl
泥水海中排出時の汚濁拡散に関する基礎的検討
Get PDF表層型メタンハイドレート（MH）の採掘計画では，海水と共に掘削したMHと泥を船上で揚収し，船上のガス化処理設備にてメタンガスのみ回収後，不要な海水と泥を掘削跡窪地へ海中排出することを計画している．この際，周辺環境への濁りの影響の把握や，窪地への効率的な排出方法が重要な課題となる．
本研究では，不要泥水の海中排出時の濁り把握のため，模擬深海泥を用いた泥水投入試験を実施して泥水排出時の沈降特性の把握を行った．その結果，泥水投入初期は密度流的であるが，全体的には移流拡散挙動が支配的であること，濁度の広がりは海底着水後の泥水運動が水平方向に転化し，水槽壁に衝突後の上向き乱れによって広がることがわかった．また3次元流動モデルによる数値解析により投入泥水の挙動を定性的に表現できた．journal articl