50 research outputs found

    艺高德馨用神针 永垂世范海内外——记澄江学派传人陈应龙先生

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    查阅陈应龙先生的相关历史文献,考察其在厦门市中医院和厦门大学任教的经历,总结陈先生的针灸教育思想,发现具有如下特色:继承承门师承教育和课堂教学结合的教育思想,教书育人,立足闽南,推广海外,为澄江针灸学派在闽南地区和海外的传播发挥了重要作用;重视树立学生的医德观,以德为先,言传身教;注重培养学生的学习方法,重视针灸基本功,加强实践,强化技能;著书立说,授业解惑,使澄江针灸学术得以传承

    The Data Sorting for Data Mining and Its Application

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    本文从统计学的角度对事务性数据库进行了描述,提出了加权构造综合属性函数方法,对事务项进行了排序分析,并用该方法对某些区中国移动手机用户的消费情况进行了综合评价,得到了许多有意义的结果。In this article, we describe the transactional databasas form the angle of statistics.We next propose the weighted construction method of the generalized attribute function for the transactional databases and analyse the data sorting of the transaction. Then we use the method to give a overall assessment on the consumption of China Mobile customers in some district of China,and gain a lot of meaningful results.国家社会科学基金资助(03BTJ014);; 国家统计局统计科学研究重点项目基金资助(LX2002-2

    Mutagenic EFFects of Nd +3 :YAG Laser on Aspergillus Niger

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    本文采用nd+3:yAg激光辐照柠檬酸生产菌黑曲霉孢子,辐照后进行培养和发酵试验、分析测定不同辐照时间黑曲霉孢子的存活率、黑曲霉菌丝体生长繁殖及代谢产酸的速度、主要代谢产物柠檬酸的产量及淀粉糖化酶活力等的变化。实验结果表明,nd+3:yAg激光辐照后各实验组发生了不同程度的变化,说明该激光能诱发黑曲霉细胞的遗传变异,可用于诱变选育柠檬酸生产的优良高产菌株In this paper, a Nd +3 :YAG laser was used to irradiate spores of the Aspergillus niger, a citric acid-producing strain.The spores irradiated were then cultured and Fermentated.Variations in a survival rates of the spores, rates of growth, propagation, and the metabolic production acid of the hyphae, yield of the main metabolite citric acid and vitality of the saccharidase, etc .were determined and analysed.The experimental results show that the various experimental groups, irradiated by the Nd:YAG laser, had changes in diFFerent degrees.This indicates that the laser can induce Aspergillus niger cells to mutate and may possibly be applied to selectively breed new good quality strains with high yield For production of the citric acid

    Structural Stabilities of Ordered Arrays of Nb-4 Clusters on NaCl(100) Surface

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    National Natural Science Foundation of China [10774124]Adsorption of ordered (2 x 2) arrays of Nb-4 clusters on the insulating surface of NaCl(100) is studied by the first-principles calculations within the density functional theory. The calculations on the relaxed geometries and cohesive energies show that both the tetrahedron and quadrangle-Nb-4 can be stably adsorbed on this substrate, which may have important applications. The adsorption of quadrangle-Nb-4 on the NaCl(100) surface is more stable than that of tetrahedron-Nb-4. Both the Nb-4 clusters studied and a single Nb atom prefer the top site of the Cl atom in the NaCl(100) surface. Electronic structure analysis suggests that the interactions between the Nb-4 clusters and the substrate are weak

    少量多樣運籌體系之建立─以台灣中小型資訊電子業為例

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      過去電腦業原廠委託代工所產生的全球運籌模式,僅限於以品牌大廠客戶為主的體系,但在產品生命週期逐漸縮短下,獲利空間也因此受到擠壓,代工廠商紛紛將廠房移至要素成本較低的地方,希望藉由規模的擴大來提升其利潤。以自有品牌外銷為主的中小型電子業者因規模較小,許多資源不若大企業豐富,無法自立運作物流活動,而針對其高附加價值的產品屬性,所衍生出來的少量多樣運籌問題,若以傳統第三方物流公司的服務,並無法滿足其快速反應、低成本,且達成客製化設計之要求,勢必需要另一種運籌模式協助其在海外市場的拓展。   本篇研究除蒐集相關物流文獻外,亦分別針對不同類型的對象作個案探索性研究,並藉由綜合個案分析,結合對國內中小型電子業者作問卷調查與分析,提出一建議的少量多樣運籌體系模式,並由政府、物流業者、中小企業(多家)三方共同合資成立「第四方物流公司」來運作,其中探討包括各物流系統成員之資訊功能,台灣物流中心的設計,以及此運籌模式未來的可能發展。   本研究最後總結中小企業一般所面臨的物流問題,並依此提出適合的解決方案,公司則由政府、物流業者、中小企業以30:40:30之股份比例合資,由具專業性的物流業者來主導合資公司之經營管理,而此合資公司則以加入的成員為專屬服務對象。   中小企業必須合作共生,利用共同物流的機制,才有辦法擴展廣大的國際市場,爭取生存獲利空間;而專業物流業者也應把握與中小企業合作的契機,才能與國際物流端連結,而非僅限於島內區域物流;如何輔導並促使整個環境有利執行,政府對於推展此運籌體系扮演重要角色,包括資金與政策支持是其關鍵。這三方合作建立在彼此的信任上,而其來源乃是對於此計畫的積極承諾,包括資金投資與貨源保證,都是此運籌體系成功運作不可或缺因素

    超声振动研齿对齿面加工质量的影响研究

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    选取齿数为7/37和8/41两对准双曲面齿轮作为实验对象,在改造过的滚动检查机Y9550上进行齿轮的超声研磨加工,超声振动频率16 kHz,超声研磨时间3 min。然后由JD45+测量机测试超声研齿前后齿面上45个点的偏移误差,再通过齿长或齿高方向的齿面误差分别计算出螺旋角或压力角误差。最后对比振动加工前后的齿面误差、螺旋角误差和压力角误差,研究结果表明,超声振动研齿能在一定程度上消除齿轮的齿面误差,改善齿轮的接触区位置与形状,提高齿轮的齿面平滑度,提高齿轮的加工质量,但也不能够进行过度研磨

    中国科学院科技成果信息服务平台系统设计与功能实现

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    重点介绍了中国科学院科技成果信息服务平台从数据获取、数据加工、数据发布到数据交换以及数据管理的系统设计流程,简要介绍平台的功能实现,最后对其总结

    The deformation mechanism of nanofilm with void under tensile loading:An atomistic simulation study

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    采用分子静力学方法结合量子修正的Sutton-Chen多体势研究了含圆孔的纳米薄膜在单向加载过程中的力学行为,并采用共近邻分析方法研究了薄膜的微结构演化过程.模拟结果表明:孔洞的引入显著地降低了纳米薄膜的杨氏模量和屈服应力;在拉伸过程中,孔洞的形状随着应变的增加逐渐由圆形变为椭圆形,最终孔洞闭合;纳米薄膜在进入塑性变形阶段后,薄膜内部出现原子的堆跺层错,这种层错结构的出现是肖克莱不全位错在薄膜内部沿着{111}面的[112]方向运动的结果.In this paper,we employ molecular static approach with quantum corrected Sutten-Chen many-body potential to study the mechanical behavior of nickel nanofilm during uniaxial loading,and investigate its microstructure by common neighbor analysis methods.The simulated results show that the existence of void significantly weakens the Young's modulus and yield stress of nanofilm;with the increased strain,the shape of void changes from circular into elliptical,and the void is eventually entirely closed.The plastic deformation of nanofilm is characterized by {111} glide associated with Shockley partial dislocations,resulting in the formation of stacking faults.国家自然科学基金(批准号:10702056,10774124);; 福建省高等学校新世纪优秀人才支持计划资助的课题~

    Magnetism of Small-sized Al_n Clusters(n=2~7)

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    使用自旋极化的密度泛函理论下的第一原理方法,对简单金属铝的小团簇Aln(n=2~7)的结构特性和磁性进行了理论计算.结果表明:团簇的结合能随着团簇中原子数的增加而增大;虽然Al是简单金属,但是其小团簇Aln(n=2~7)具有磁性,磁矩在1μB和2μB间变化;通过能级图分析了Aln团簇磁矩的变化规律.此外,还分析了Aln团簇的磁矩、结合能、能量的一阶和二阶差分随原子数n的变化,讨论了最稳定团簇Al5的电子结构和电荷密度.The structural properties and magnetism of Aln small clusters(n=2~7) were studied by employing the first-principles calculations based on the spin-polarized density functional theory.The calculation results showed that:the binding energies increased with the number of atoms in the Alnclusters,although Al was a simple metal,the small-sized Aln clusters(n=2~7) could exhibit magnetism,with the magnetic moments changing between 1 μB and 2 μB.From the plot of energy levels,the magnetic moments of spin-polarized Aln clusters were discussed.Furthermore,the magnetic moment,the binding energy,the first and second differences of binding energies versus the number of atoms in the clusters were analyzed.The electronic structure and charge density of the most stable cluster Al5 were also discussed.国家自然科学基金(10774124,10702056)资
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