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Enhancement of Learning Effect for Performance-Lagged Students in Computer Programming
No full text補正完畢國際Hakodate, JapanTW
Mobile Flipped Learning: A Pathway to Empower EFL Low-proficiency Writers
No full text補正完畢國內Taipei, TaiwanTW
Development of Dual-Functional Titanium Implant for Osseointegration and Antimicrobial Effects via Plasma Modification
No full textIntroduction and aims: Titanium dental implants are widely used in clinical practice; however, they still face challenges such as implant loosening and infection. Recent studies focus on improving integration and infection resistance. In this study, a low-temperature plasma treatment was employed to fabricate a dual-functional modification layer on the titanium implant surface, offering a promising strategy that simultaneously promoted bone integration and effectively inhibited bacterial infection.
Materials and methods: This was achieved by depositing a hexamethyldisilazane (HMDSZ) film on the surface of titanium implants and grafting a thermosensitive composite hydrogel designed as a drug delivery system. The natural cross-linker genipin was used to immobilize chlorhexidine on the implant collar (2 mm in length). Meanwhile, bone morphogenetic protein-2 was immobilized on the implant body (6 mm in length), ensuring controlled release to promote bone regeneration and provide strong antibacterial effects. Various experimental analyses were conducted to characterize the samples, including assessments of hydrophilicity, functional groups, elemental composition, and surface morphology. Validation was carried out through in vitro tests (cytotoxicity, mineralization, and antibacterial assays) and in vivo animal experiments (bone-to-implant contact and Periotest measurements).
Results: Biocompatibility tests indicated that the plasma-treated surfaces did not exhibit cytotoxicity and facilitated osteoblast differentiation and osseointegration. The hydrogel effectively served as a carrier for the controlled release of growth factors and antibacterial agents, thereby boosting the osseointegration and antibacterial properties of the titanium implants. In vivo studies in swine models demonstrated superior bone integration and antibacterial efficacy compared to untreated and commercial implants within 2 weeks.
Conclusion: The surface modification method proposed in this study successfully produced titanium implants with dual-functional surfaces, enhancing both osseointegration efficiency and antibacterial capability.
Clinical significance: This approach enables implants to perform specific functions through the use of growth factors and antimicrobials, potentially advancing implant technology and improving clinical outcomes.補正完畢GB
II. Quantum master equation for coherence
No full text本論文包含了靜態的量子化學計算以及動態的量子動力學。 第一章以氫鍵與鹵素鍵為系統 ，基於量子化學計算探討系統內的分子間作用力與質子轉移機制。第二章以雙 量子態為模型探討在開放系統中密度矩陣隨時間的演化。在氫鍵系統中我們選擇醯胺分子對於其N-H…O=C型的氫鍵進行研究，在微擾理論MP2/aug-cc-pVDZ的計算下得到丙烯醯胺的單體以及雙體結構，其雙體結構因N-H…O=C氫鍵的影響在振動光譜上相較於單體會有紅移的現象。此外，我們也引用了密度泛函理論ωB97XD/aug-cc-pVDZ對於甲醯胺與甲酸的雙體及其混合物進行質子轉移的研究，在質子轉移的過程中位能曲面，質子受力，電通量變化都有著對應的關係。對於雙質子轉移的過渡態我們以symmetry adapted perturbation theory做了能量分類，顯示出雙質子轉移的活化能多半來自於電子交換能。對於鹵素鍵的系統我們選擇CF3Cl及CF3Br為路以式酸，搭配不同型態的路以式鹼(1孤對電子、2孤對電子、1孤對電子與未飽和鍵以及π鍵系統)形成雙體，在雙體的結構下探討取代效應、路以式鹼的形態對於分子間作用力的影響。此一研究顯示以CF3Cl及CF3Br為路以式酸的鹵素鍵系統在光譜上皆屬藍移型鹵素鍵，而傳統用於解釋鹵素鍵的σ模型在分子系統逐漸增大的狀況下必須加入其他因素做為微調(例如氫鍵)。
另一方面，對於開放系統我們以馮•紐曼的量子主導方成式為基礎，對於布居量與干涉態做微擾的展開，傳統的干涉態皆將起始的相位設為零。此處我們探討不同的起始相位對於布居量與干涉態的影響。電子版TW
AI時代下資訊科技融入大學體育芭蕾課之行動研究
No full text本研究旨在探討資訊科技融入大學體育芭蕾課之教學與學習歷程，並透過行動研究，以設計思考的歷程逐步調整課程，嘗試構建符合學生學習需求的教學模式。研究參與者為某大學112-2學期體育芭蕾課程的27名學生，以質性資料蒐集，包括焦點團體訪談、課程學習心得、期末學習心得、教師反思札記和學習單等質性資料進行分析。研究結果分為探索期、蛻變期和穩定期三個階段，透過逐步調整課程，規劃出符合學生需求的課程藍圖。然而，發現學生在資訊科技的使用方式及學習策略上還是存在差異，且資訊科技工具的選擇與教學模式的整合仍有優化空間。但整體學習成效上，在認知、情意及技能方面的學習成效上有顯著轉變。未來建議教學方面，教師可提供多元彈性的學習模式，以符合學生的個別化學習需求，並整合教學模式與策略，善用資訊科技工具，以發揮最大效益。同時，應強化動作概念與身體實踐的整合，提升動作表現與身體意識。此外，實體與線上的回饋需並行，更能給予學生個別化指導。而研究方面，建議未來擴大研究範圍與對象，並調整研究方法，以全面了解實際應用情形。最後，應關注學生線上學習頻率及資訊科技工具使用度，以更符合個別化的學習需求。紙本TW
Bilayer germanene growth as a chiral heterostructure
No full textGrowing a bilayer Xene other than the well-established bilayer graphene is a tremendous challenge, but with equally great potential toward the development of new two-dimensional materials. We have used angle-resolved photoemission spectroscopy (ARPES), and scanning tunneling microscopy (STM) to investigate the growth of bilayer germanene (BLGE) on Ag(111) with the assistance of a Pb layer. AB-stacked BLGE was successfully stabilized atop a commensurate Pb(111) monolayer, itself commensurate to a 30° rotated germanene layer in quasifreestanding phase (QP) below. Surprisingly, this four-layer configuration resulted in BLGE with a lattice constant of ∼3.5 Å, which is 15% compressed relative to the freestanding counterpart. Relaxation of these four layers by density functional theory (DFT) naturally converges to the same lattice constants from measurement, despite the large compressive strain in the BLGE. ARPES spectra in two symmetry directions match those predicted by the same DFT model—in particular a characteristic eye-shaped feature resulting from the evolved Dirac cone in the ΓK BLGE direction. Thus, we have demonstrated a novel method to grow a new Xene bilayer as part of a unique heterostructure which stabilizes the bilayer against substantial compressive strain and further induces chirality.補正完畢US
Hybrid Particle Swarm Optimization Bacterial Foraging control an agricultural Quadcopter.
No full textThis article proposes a hybrid algorithm that combines Bacterial Foraging (BF) and Particle Swarm Optimization (PSO) to optimize the control parameters: Integral (I) controller plus Fuzzy-like Proportional and Derivative (Fuzzy-like PD) as the Fuzzy Scaling Factors (FSF) of the Fuzzy controller. The fitness function integral of time multiplied absolute error (ITAE) was utilized as a minima criterion to assess the control design effectiveness. The proposed controller is then applied to pilot a UAV Quadcopter model for usage in a variety of agricultural applications, including field observation, crop health monitoring, pesticide spraying, disease detection, etc. The numerical simulations perform the validity of the fast responses, stable and reliable without error.補正完畢US