Results 11 to 20 of about 668,524 (158)

Between Dependence and Alienation: Understanding the Digital Minimalist Behavior of Chinese Millennials—An Analysis Based on SEM and fsQCA

open access: yesJournal of Adolescence, Volume 98, Issue 5, Page 1715-1736, July 2026.
ABSTRACT Introduction Following rapid iterations in media technologies, Chinese millennials (born between 1980 and 1995) find themselves in a paradoxical state where digital saturation exists alongside fatigue, making them central practitioners of digital minimalist behavior.
Chao Zhang, Yinze Hao, Jingwen Li
wiley   +1 more source

固體火箭流體轉向之數值研究 [PDF]

open access: yes, 2010
這篇文章是探討有關固體火箭流體轉向對 於燃燒不穩定之影響,這個研究結果顯示聲波 場之存在,造成流場之振盪,而其振盪頻率和聲場 之頻率相同。此流場週期振盪之現象發生於所 有之測試情況;同時,其振盪之現象和聲波之振 幅、頻率,以及聲場之位置有關。這些結果顯 示在固體火箭中流體轉向之趨動或抑制特性和聲波 場之特性有關。 This paper describes results of a numerical study of the effect of the flow turning process upon
Chen, Tseng-Yuan; Lee, Shi-Min   +2 more
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Examining the multi‐disciplinary origins of biophobia towards threatening and non‐threatening wildlife in a highly urbanised city in China

open access: yesPeople and Nature, Volume 8, Issue 7, Page 2338-2352, July 2026.
Abstract Urbanisation is reshaping how people experience wildlife, reducing our shared spaces with local biodiversity. Fewer opportunities for human–wildlife interactions weaken our emotional attachments to nature and precipitate a loss of species knowledge and familiarity.
Sam S. S. Lau   +3 more
wiley   +1 more source

晴空亂流預測參數之探討 [PDF]

open access: yes, 2010
低空風初或微風暴(Low level wind shear, microburst)代表著氣象因素中危害飛行安全最烈的一個現象; 而晴空亂流(Clear Air Turbulence, CAT)則為氣象因素中影響飛行品質最鉅的另一現象。本文根據以往解決低空風切問題之經驗, 首先以三角函數之特定組合模擬三維晴空亂流風場, 發現與Von karman或Dryden風場相較, 此風場簡單好用又不失其真實性; 再以新創之亂流參數T/sub 1/計算風場之參數值, 此參數代表飛機在三維亂流風場之各方向受力狀態 ...
宛同; 陳玨全   +1 more
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Microstructure Engineering Toward High Cost‐Effective Nd–Fe–B Sintered Magnets: A Review

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Nd–Fe–B sintered magnets, critical for enhancing electromechanical conversion efficiency and operational stability in wind turbines and electric vehicle drives, are prized for their outstanding coercivity, high remanence, and superior maximum energy product.
Dongmin Zhang   +5 more
wiley   +1 more source

減振器位置對於雙層振動平板減振效能之研究 [PDF]

open access: yes, 2013
中華民國航空太空學會; 交通大學機械工程系; 交通大學前瞻火箭研究中心; 國家科學委員會工程技術發展處工程科技推展中心兩岸20121215~20121215電子版Y新竹 ...
王怡仁
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Breaking Shuttle‐Induced Kinetics Limitations in Lithium–Sulfur Batteries: Confined FeS2 Nanocatalyst With Optimized d‐Band Center

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT The commercialization of lithium‐sulfur batteries (LSBs) faces dual challenges of sluggish sulfur redox kinetics and lithium polysulfides (LiPSs) shuttling. Herein, we demonstrate a synergistic strategy combining multidimensional structural confinement with d‐band center modulation to simultaneously suppress LiPSs diffusion and catalyze ...
Shibo Rong   +8 more
wiley   +1 more source

太陽能無人飛行載具飛行於大氣層內之最佳飛行軌跡設計 [PDF]

open access: yes, 2010
本文將運用最佳化理論,探討太陽能無人飛行載具之最佳飛行軌跡。不同於以往 之大多數的最佳飛行軌跡研究通常多針對燃油消耗率進行設計,本文的研究則是 著重於能量消耗率對於飛行軌跡的影響,期以配合太陽能無人飛行載具研發之應 用。研究顯示在最佳的爬升軌跡下,飛機的升力係數與指示空速均保持定值;在 給定的發動機輸出功率之下,固定高度之最佳轉彎飛行時,載具之控制參數(滾 轉角)僅與速度有關。此二者之結果有助於太陽能飛機維持最佳爬升以及最佳水 平轉彎軌跡的導引應用。The optimal trajectories of
教育部;逢甲大學;工研院系統與航太科技發展中心; 中國航空太空學會;國科會工程處工程推展中心;漢翔航空工業股份有限公司; 中華民用航空學會;成功大學航太中心;中山科學研究院   +1 more
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Land use overrides climatic controls on soil organic nitrogen transformations: Contrasting responsiveness between forest and cropland ecosystems

open access: yesFunctional Ecology, Volume 40, Issue 7, Page 2128-2142, July 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Soil organic nitrogen (SON) transformation is critical for global nutrient cycling and ecosystem productivity, yet how its responsiveness to climate change differs across diverse land use types remains poorly resolved.
Xinyi Yang   +10 more
wiley   +1 more source

模擬退火法於直昇機旋翼葉片之最佳化設計 [PDF]

open access: yes, 2010
本研究係利用模擬退火法在考慮非穩態空氣動力和尾流動力環境下,尋求直昇機 在不同飛行狀態之最低輸出功率並滿足旋翼葉片最大升力之要求。研究中結合了 旋翼的空氣動力及尾流動力之耦合系統,並選用Peters的尾流動力理論作為非穩 態空氣動力環境的模擬,並利用葉片元素理論及升力線理論推導出升力函數。模 擬退火法的優點在於可以跨越局部最佳值,以求得全域最佳值。本研究並利用移 動步伐和控制搜尋次數改善模擬退火法之效率。數值分析的結果顯示本研究的方 法極為成功。This study presents an ...
教育部;逢甲大學;工研院系統與航太科技發展中心; 中國航空太空學會;國科會工程處工程推展中心;漢翔航空工業股份有限公司; 中華民用航空學會;成功大學航太中心;中山科學研究院   +1 more
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