Study on the Development of Business Models Based on the Theories of Simple Rules and Lean Start-up – Taking Meet You as Example

美柚公司成立于2013年11月，在不到三年的发展过程中，其产品和业务经历了多次重要的调整或转型。得益于美柚公司管理团队果断、高效的决策能力和把握机会的能力，美柚公司数次抓住了业务发展的机会，公司实现了快速发展。论文通过对美柚公司的案例进行分析，研究美柚公司如何进行高效决策和有效把握机会。 论文以美柚公司的发展历程作为研究的主要内容，作者对公司的公开信息进行了汇总整理，通过实地调研、员工访谈等方法，收集了从美柚公司创立前到创立后发展过程中的事实信息，并结合基于简单规则的战略和精益创业理论对公司的发展进行了理论分析和总结。 论文认为，对于在互联网领域的创业者而言，如何能够在当前迅速变化的复杂环...Established in Nov. 2013, Meet You has its products and business experience many important adjustments or transformations during its development for less than three years. Benefited by Meet You management team’s decisive and efficient decision-making capability and opportunity seizing capability, Meet You has seized many opportunities of business development and achieved rapid development. In this...学位：工商管理硕士院系专业：管理学院_工商管理硕士(工商管理硕士)学号：1792012115084

Fundamental study on and clinical application of a new multi-purpose dental casting alloy (Degunorm)

最近, 新たに開発されたインレーやクラウン, ブリッジ, 金属床, さらに陶材焼付冠にいたるまでが製作可能な, 多目的型の鋳造用金合金(Degunorm, 以下DN)と, 従来の代表的な金合金の白金加金(PGA2,以下P2)および陶材焼付用金合金(KIK, 以下KI)の, 鋳造後の表面粗さを測定した。さらに, この金合金(DN)を用いて製作した陶材焼付冠の破折試験, 臨床応用を行い, 従来の焼付用金合金(KI)と比較検討し, 以下の結論を得た。1.表面粗さは, DNとP2の間に有意な差は認められなかった。しかし, DNとP2のいずれよりもKIの方が粗さが大きく, 1%の危険率で有意に差が認められた。2.陶材焼付冠の臨床形態による破折試験では, DNを使用した焼付冠は, 平均で148Kg重で, KIを使用した場合の181Kg重には及ばないものの, 両者の間には, 危険率5%で有意な差は認められなかった。3.この合金の特長を生かした臨床例により, これまで困難とされた症例に対する応用が可能であることがわかった。Surface roughness of a cast formed by a new multi-purpose casting gold alloy (Degunorm, abbreviated as DN) was measured and compared with that of a platinum-added gold alloy (PGA2,abbreviated as P2), which is presently widely used, and that of a gold alloy specialized for porcelain fusion (KIK, abbreviated as KI). Furthermore, fracture testing of DN-made porcelain fused to a metal crown was carried out for comparison with KI. This investigation led to the following conclusions : 1. The surface roughness of DN and that of P2 were not significantly different from each other, while the surface roughness of KI was significantly higher than that of the other materials (p<0.01) . 2. Fracture testing of porcelain fused to metal crowns in a clinically used form revealed no significant difference between DN and KI, even though the value for the porcelain fused to metal crowns of DN was 148 kgf on the average, which was lower than the value of 181 kgf for KI. 3. Examples of clinical applications that best utilize the features of this new material have shown that DN can be applied clinically in cases in which application of ordinary alloys is difficult

Fundamental study of several hard resins

現在市販され, 臨床に用いられている硬質レジンのクラレ社製セシードII(CE), 松風社製ソリデックス(SO), GC社製アクシス(AX), クラレ社製エステニア(ES)4種類のそれぞれデンチン色, エナメル色を用いて, 熱膨張係数, 曲げ強さ, 硬さ, 圧縮強さ, 弾性係数, さらにこれらを用いて製作したジャケット冠の破折強度を調べ, 次の結論を得た。1.熱膨張係数は, AX, SO, CEの順に小さくなり, ESがこれらに比べ極めて小さい値を示し, 金合金などの熱膨張係数に近かった。2.曲げ強さと硬さは, ESの値がデンチンとエナメルともに, ほかの3種類の硬質レジンに比べ, 曲げ強さで2倍以上, 硬さで2～7倍の明らかに高い値を示した。3.4種類の硬質レジンの圧縮強さは, 一般のアクリルレジンの約2～5倍, 弾性係数はアクリルレジンの約1～4倍であった。4.硬質レジンを用いて製作したジャケット冠の破折強度は, ESがCE, AXに比べ有意に高い値を示した。Four types of hard resin currently available for clinical use are Cesead II (CE) by Kuraray Co. Ltd., Solidex (SO) by Shofu Inc., Axis (AX) by GC Corp., and Estenia (ES) by Kuraray Co. Ltd. The thermal expansion coefficient, flexural strength, hardness, compressive strength, and elastic modulus of each type were examined for dentine and enamel colors. Furthermore, the fracture strength of jacket crowns produced from these types of hard resin examined. The results were as follows : 1. The thermal expansion coefficient decreased in order of AX, SO, CE, and ES. The coefficient of ES was especially small, approximating that of gold alloy. 2. ES had higher values for both flexural strength and hardness, as compared with the other three hard resins. Its flexural strength value was more than 2 times higher in dentine, and its hardness value was 2 to 7 times higher in enamel. 3. All four types of hard resin had compressive strength 2 to 5 times higher and elastic modulus I to 4 times higher than the values of general acrylic resins. 4. The fracture strength of jacket crowns made from ES was significantly higher than those made from CE and AX

Synthesis of polymeric capillary monoliths via thiol-maleimide polymerization reaction for highly efficient capillary chromatographic separation

Synthesis of polymeric capillary monoliths via thiol-maleimide polymerization reaction for highly efficient capillary chromatographic separatio

重金属对小麦根干重和在不同培肥条件下对土壤铵态氮的影响

笔者的研究目的在于了解土壤重金属污染对小麦根部生长发育的影响以及在不同培肥条件下土壤重金属的生物活性的变化情况。通过盆栽试验研究了重金属铬、镉和铅三种重金属对小麦根重的影响,利用室内培养试验研究了氮磷化肥、氮磷化肥+低秸、氮磷化肥+中秸、氮磷化肥+高秸、氮磷肥+厩肥、氮磷肥+低秸(休闲田)以及无肥对照区等7种不同培肥条件下重金属铬、镉和铅对土壤铵态氮含量的影响。研究结果表明,重金属铬对小麦的根重影响较大,这3种重金属的复合污染对小麦根重的影响要比单因素条件下的影响要明显;在不同肥料条件下重金属对土壤环境内的铵态氮的影响作用存在差异,氮磷肥料条件下,重金属对土壤铵态氮的抑制作用明显增强;氮磷+低秸(休闲田)条件下,重金属铬、镉与铅对土壤铵态氮的抑制性显著降低,铵态氮总量基本影响较小。通过研究表明,不同培肥条件能够影响土壤重金属的生物活性,可以通过控制土壤培肥条件达到降低土壤重金属生物活性,减轻对重金属污染土壤的程度

Laser Beam Propagation in Compressible Vortical Field

采用一种二维弱可压缩性的轴对称的涡模型,研究单个涡和光波阵面的相互干扰.对于低能量激光,在近场采用几何光学的分析方法.计算受干扰波阵面的光程差以及抖动角,确定通过涡的低密度区后会加速波阵面的变形,单体涡对光束有散焦作用.计算化学氧碘激光（COIL）通过涡之后的斯特列尔比,证明涡强对斯特列尔比有重要的影响

客运架空索道系统整体静力特性分析

针对客运索道系统中悬索、塔架、吊篮等特定结构 ,着重解决了索道系统分析中的整体有限元建模问题 ,并提出了客运索道系统在自重或风力作用下的应力分析方法 ,为客运索道系统静强度设计提供了整体性计算方