查询词典 on the double

The main contribution of this thesis is that we propose a collaborative filtering recommendation algorithm based on double clustering. This approach first respectively clusters resources and users by the users rating on items, then makes a collaborative filtering recommendation based on the clustering result. The new algorithm can shorten on-line recommendation time. Then, we apply the classical formula of cosine correlation to double clustering algorithm, leaving out the standardization operation. In the end, we implement an educational resource recommender system according to the need of the actual project and the result is positive.

本文的主要意义在于，首先运用聚类技术对用户和资源分别进行聚类，然后利用聚类结果进行协同过滤推荐，由于聚类部分离线周期进行，大大缩短了在线的推荐时间；然后将经典的余弦相似性计算公式运用到双重聚类算法中，省去规范化处理操作，减少运算量；最后结合实际的需要，实现一个资源推荐系统。

The main work can be summed up as follows: Firstly, we studied the thermal-field properties of VCSELs, and analyzed the influences of current spreading, material parameters and operating conditions on the temperature distributions. Secondly, we began with the electrode voltage and calculated the equipotential s distributions, compared the distributions of voltages and current densities in different depths of VCSELs, and then studied the influences of the oxide-confining region with different position or thickness, and the different sizes of the gain-guided aperture and emitting window on the distributions of the injected current density, carrier concentration and temperature in the active region. Thirdly, we realized the coupling of electricity, optical and thermal-fields, worked out the threshold voltage, calculated the distributions of the injected current density, carrier concentration and temperature under different offset voltages, and analyzed the impacts of temperature profile and carrier density on the refractive index, Fermi levels and optical-field. Finally, we gave the equipotential line distributions with considering N-DBR and double oxidized-confining regions, and analyzed theinfluences of N-DBR and double oxide-confining regions on the distributions of the current density, carrier concentration, temperature and optical-field.

具体工作可以概括如下：首先，研究了VCSEL的热场特性，分析了电流扩展，材料参数和工作条件对于温度分布的影响；其次，从电极电压入手，计算出激光器中的等势线分布，并对不同深度处的电压和电流分布进行比较，研究了高阻区的不同位置和不同厚度、限制层和出射窗口半径的大小对电流密度、载流子浓度和温度分布的影响；再次，实现了电、光、热耦合，求出了阈值电压，计算了不同偏置电压下的电流密度分布、载流子浓度分布和热场分布，分析了温度和载流子浓度变化对折射率、费米能级和光场的影响；最后，给出了考虑N-DBR和双氧化限制层时激光器中的等势线分布，分析了N-DBR和双氧化限制层对VCSEL电流密度、载流子浓度、温度和光场分布的影响。

He plays Llanowar Elves and an early Hunted Wumpus. The only creatures in my hand are a Body Double and a Coiling Oracle, but I have double Looter il-Kor on the table and an Evacuation in hand. Two turns later my hand is filled with monsters. I Evacuate, he plays Wumpus again, and I drop Tidespout Tyrant to the board, follow it with double Looter il-Kor to bounce his guys, and then drop Simic Sky Swallower. He dies.

对手很快的放下了罗堰地精和捕获的狮头象，而我手中只有替身妖和盘卷先知，场上有两个寇族黜人掠夺者，手上还有逃难，两回合后，我手上已经满是生物了，逃难，他再次放下狮头象，于是我放出潮浪暴君，接着两个寇族黜人掠夺者把他的生物弹了回去，最后扔下析米克蔽空霸，他倒了。

The breakthrough point of this thesis is to make use of newsvendor"s model to explain the behavior of double marginalization in the Specialization system with Specialization Advantage, which is not accordant with the statement of" double marginalization " in economics (see Tirole,"the theory of industrial organization, P222-230). On the condition of Specialization Advantage, double marginalization may play positive role in the economy of the system.

论文的切入点是，利用报童模型来说明在具有分工优势的专业分工系统中双重边际效应的表现，这与经济学中对"双重边际效应"的表述参见Tirole(泰勒尔，《产业组织理论》，p222-230不完全一致，在有分工优势的条件下，双重边际效应可能对系统的经济性有积极的作用。

A Study on Fraunhofer Double-Slit Diffraction by Applying Simulation Technology;2. Based on Kirchhoffs theory,the approximate intensity formulas of double-slit diffraction of Gaussian Beam is derived under paraxial approximation with power series expansion methods.

依据基尔霍夫衍射理论，利用幂级数展开的方法推导出旁轴条件下高斯光束双缝衍射的近似光强计算公式，并通过数值计算对双缝衍射的基本特性进行了讨论，得出了与其他文献一致的结论，得出了高斯光束下的双缝衍射极小值点比平行光束双缝衍射的极小值点向外移，观察屏中心光能变小；光强分布可由激光斑在衍射屏处的参数调制的结论。

The results show that complexing agent greatly effects on film's density. For the double complexing agents solution system based on citric acid, the solution with lactic acid and citric acid produced most compact film with lowest porosity; and for the double complexing agents solution system based on butane diacid, the solution with butane diacid and malic acid made most compact film with lowest porosity.

研究结果表明：络合剂对镀层的致密度影响显著，对于以柠檬酸为基的双络合剂体系镀液来讲，乳酸-柠檬酸双络合剂体系镀液获得的镀层致密度最好，具有最低的气孔率；而对于以丁二酸为基的双络合剂体系镀液来讲，丁二酸-苹果酸双络合剂体系镀液获得的镀层致密度最好，具有最低的气孔率。

The results of flow cytometry in normal, B27 single transgenic mice and B27/hβ〓m double transgenic mice were 0.63％, 7. 87％ and 35. 87％ respectively. B27 antigen was also expressed in the cell surface and cytoplasm of colon, skin, testis and eyes of the double transgenic mice by the detection of immunohistochemistry, which was evident on the cell surface. 8 double transgenic mice bearing high copy (7 males, 1 female) developed spontaneous alopecia, psoriasiform dermatosis, joint swelling and nail changes in the rear paw.

免疫组化检测可见转基因小鼠的结肠、皮肤、睾丸和眼睛组织的细胞膜和细胞浆均有B27抗原的存在，尤以细胞膜明显。21只B27/h〓转基因阳性鼠中有8只出现脱毛和皮肤的银屑病样改变，同时伴有后肢的关节肿胀和趾甲变化。8只小鼠均为高拷贝，其中雄性7只，雌性1只。

Results: The angle that adjusting the reference line on the transverse plane is 32. 85°±6.76°, on the coronal plane is 14.15°±9.02°. The facial canal appears "ㄟ" on double oblique imaging geniculate ganglion, tympanic segment, post lap segment, mastoid segment were showed clearly. The achievement ratio is 100%. The segment displaying on double oblique imaging is more than transverse plane, coronal plane and sagittal plane.

结果：面神经管双斜位图像需要在横断位参考图像上旋转参考线的角度为32.85°±6.76°，在冠状位参考图像上旋转参考线的角度为14.15°±9.02°；在面神经管双斜位图像上，面神经管表现为&ㄟ&形，由前向后同时显示出膝状神经节、鼓室段、后膝部和乳突段；面神经管双斜位成像成功率为100%，面神经管行程的显示程度大于横断位、冠状位和矢状位。

The yarns slippages were mainly studied by the forming experiment on cylinder, and yams slippages characteristics were described.Finally, the forming experiments of MBWK fabrics on double-hemisphere were carried out for the first time. Based on the experimental results, the forming characteristics of MBWK fabrics on double-hemisphere were described.

最后，针对女用避弹衣的实际需求设计并进行了双半球成型实验以研究其成型特点及规律，实验中发现织物在成型过程中并无明显的纱线滑移现象，并且其成型规律与双半球之间的间距无关，而仅仅与双半球的直径大小相关。

Due to the different tuning requirements from what double bass players habitually practice, many eighteenth-century Viennese school double bass pieces were thought totally unsuitable on the modern double bass.

一些研究指出，许多十八世纪维也纳乐派的低音提琴乐曲，完全无法用现代低音提琴来演奏，主要的原因就在於当时惯用的维也纳空弦调音法与现代惯用的四度间隔不同。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。