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ラット海馬スライスで誘導されるシナプス長期増強のLight/Dark (LD)差に関する研究
Get PDF九州工業大学博士学位論文 学位記番号:生工博甲第220号 学位授与年月日:平成26年3月25日第1章 序論||第2章 実験方法||第3章 実験結果||第4章 考察||第5章 結
Study on Temporal Image Analysis from Thoracic CT Image
Get PDF九州工業大学博士学位論文 学位記番号:工博甲第363号 学位授与年月日:平成26年3月25日第1章 序論||第2章 適応的細分化による三次元胸部CT画像の階層的レジストレーション手法||第3章 血管構造情報を用いた三次元胸部CT 画像における非剛体レジストレーション手法||第4章 濃度分布差に起因する経時的差分画像のアーチファクトの低減法||第5章 経時的濃度特徴量を用いた結節状陰影の検出||第6章 結
気相重合法による農業残渣と高分子複合材料の界面制御
Get PDF九州工業大学博士学位論文 学位記番号:生工博甲第214号 学位授与年月日:平成26年3月25日CHAPTER 1. General introduction||CHAPTER 2. Development of biocomposites containing Erianthus Arundinaceus as cellulose resource crops||CHAPTER 3. Enhancement of compatibility based on vapor-phase assisted surface polymerization (VASP) method for poly (L,L-lactide) composites with wheat straw fiber||CHAPTER 4. Design of surface coating on powdery fiber by gas-flow type of vapor-phase assisted surface polymerization (VASP-F)||CHAPTER 5. ConclusionIn order to provide a valuable greener product using agricultural waste, polymer/ agricultural waste composites has been fabricated. Since, however, the incompatibility between the hydrophilic natural fiber and hydrophobic polymer matrices makes it difficult to disperse the individual fiber throughout polymer matrices, and the incorporation of agricultural waste into polymer matrices may compromise certain mechanical properties. In order to improve the compatibility between natural fiber and polymer matrices, this thesis is studied and discussed the control of surface property using compatibilizer and vapor phase assisted surface polymerization for the high-performance polymer/ agricultural waste composites. This thesis is composed of up to Chapter 5 from Chapter 1. The background, scope and objectives of this study are described in the introduction Chapter 1. In Chapter 2, in order to investigate potential of agricultural natural fiber as filler, I focused on Erianthus arudinaceus as a cellulose resource crop because of high CO_2 fixation efficiency. Polymer composites of polypropylene (PP) with Erianthus fiber (ETF) were fabricated and they were evaluated by mechanical properties to reveal the compatibility between PP and ETF. To overcome poor compatibility between PP and ETF, Maleic anhydride-modified polypropylene (MAPP) was applied as a compatibilizer. Since ETF/PP/MAPP composites improved the mechanical properties, it is revealed that interfacial property control between matrices and natural fibers is critical. In Chapter 3, vapor-phase assisted surface polymerization (VASP) method was applied as an alternative approach to compatibilizer. The VASP is not only a surface coating method for fabrication of composites but it is also expected to be able to apply to a wide range of substrates. VASP is an excellent method for preserving the fine structures of delicate substrate surfaces such as biomaterials in comparison with liquid and melting processes. After the diffusion and adsorption on the substrate surfaces, the monomer can be polymerized.. VASP of MMA onto wheat straw fiber (WSF) was applied to modify the surface property and improve the compatibility between PLLA and WSF. Bio-composites with biodegradable polymer (poly (L-lactic acid) (PLLA)) and WSF was fabricated via VASP. Since the PLLA/VWSF (treated with VASP in WSF) composites improved in tensile strength (20-30%) compared with that of PLLA/WSF composites, VASP proved to improve the compatibility between matrices and natural fibers. In Chapter 4, the gas-flow type of vapor-phase assisted surface polymerization (VASP-F) was successfully developed since the substrate surface could be polymerized through monomer mist produced by monomer bubbling. VASP-F can inherit advantages of VASP method due to polymer grafted on substrate, and can recover non-reactant monomer. Larger amounts of substrate can be modified by VASP-F compared to VASP. In conclusion, the improvement of compatibility between natural fiber and polymer matrices are essential to produce the high-performance polymer/agricultural waste composites. This study provides new approach for the natural fiber reinforced plastics. The utilization of agricultural waste as filler for biocomposites would lead to the sustainable society throughout the achievement of environment conservation, and the social system encourage the agricultural sector revitalization
Thesis or Dissertation
No full text九州工業大学博士学位論文 学位記番号:情工博甲第286号 学位授与年月日:平成26年3月25日第1章はじめに||第I部応答に連続値を許す項目反応理論とそのオンラインシステムへの実装||第2章応答に連続値を許す項目反応理||第3章項目反応理論を用いたテスト評価のWeb システムの開発||第II部ユーザー・アイテムの応答から構成された確率構造を持つ不完全マトリクスからの完全マトリクス推定||第4章適応型試験||第5章EMタイプIRT による不完全マトリクスの予測||第6章EMタイプIRTと推薦システムの比較||第7章おわり
Research on Adaptive Steering Control of Vehicles with Saturated Lateral Tire Force
Get PDF九州工業大学博士学位論文 学位記番号:工博甲第385号 学位授与年月日:平成27年3月25日第1章 緒論||第2章 従来型車両操縦コントローラの問題点||第3章 入力飽和が存在する二入力二出力システムの適応制御||第4章 適応操縦安定化システム||第5章 結
Multiple-window Bag of Features for Road Environment Recognition
Get PDFThe idea of Bag of Features (BoF) is recently often employed for general object recognition. But, as it does not take positional relations of detected features into account, the recognition rate is still not very high for practical use. This paper proposes a method of describing the feature of an object by the BoF representation which considers positional information of the features. Although the original BoF representation is applied to an entire image, the proposed method employs multiple windows on an image. The BoF representation is applied to each of the windows to represent an object in the image interested for recognition. The performance of the proposed method is shown experimentally
Path Loss Prediction Model for a Sloped Area in Microcell Based on Scale Model and Real Environment Measurements
Get PDFThe 1st IEEE Asia Pacific Conference on Wireless and Mobile 2014 (APWiMob 2014), Aug. 28-30, 2014, Grand Inna Kuta Hotel, Bali, IndonesiaThe forests in Japan occupy 70% of the country, and there are many mountains and hills in Japan. As cities and residential areas have expanded the living space for people has spread to such hilly or sloped areas. Mobile communication systems are already a vital infrastructure to daily life, so covering these sloped areas is important in terms of service provisioning. It is necessary to predict propagation losses over the sloped areas for radio link design