改进

On account of inaccurate classification, the traditional hierarchical Webpage recommendation algorithm based on vector space model can not produce high precision when it deals with large amounts of data.

在面对大数据量时，传统的基于VSM的分层网页推荐算法由于分类的不准确，造成推荐精确率较低。该文针对这个缺陷提出了改进的分层推荐算法，该算法在推荐过程中综合考虑了领域和用户兴趣，以及网页和用户兴趣的相似程度，来为用户提供高效的个性化网页推荐。

Combining concrete datas and restriction condition of qinjiang river, this dissertation uses POA to resolve the objective to maximize the benefit production on short-term optimal dispatching about cascaded hydroplants, giving concret account step and flow chart, adopt object-oriented method to program and then analysis and sums up these computing results.

给定清江相关数据约束条件下，用POA改进算法，对梯级电站短期发电效益最大模型进行了求解，给出了具体的计算步骤和程序流程图，采用面向对象方法进行程序设计，提高了程序的可扩充性，并对优化计算结果进行分析，优化计算的时间和精度都达到了项目要求，有明显的经济效益。

So,it is important to learn some excellent experiences of other countries and to give some advisement in how to improve the accounting treatment of enterprise pension plans in our country.

因此，有必要在借鉴国外成熟的养老金会计核算经验之上，结合我国的实际情况，对我国的企业养老金会计提出改进建议。

To propose an improved Euler integral approach and integral controlling algorithm, which obviously reduces accumulated error and provides more accurate data.

3提出了欧拉积分改进方法和积分控制算法，明显地减少了计算中的累积误差，为图形绘制提供了更加准确的物理数据。

Focusing on the problems existing in the implementation of polarity crosscorrelation"zero-crossing"algorithm in the practical applications, an improved approach based on HSI (High-Speed-Input channel of MCS8098) is proposed, which makes the circuit much simpler. Experimental results indicate that higher response speed and higher accuracy rating of signal recording can be obtained with the improved approach.

针对极性相关测速"零点穿越"算法在实际实现过程中存在的"零点穿越"信号容易"漏记"，而对流速测量造成不利影响等问题，本文提出了一种基于HSI的极性相关测速的技术改进措施，硬件结构更加简单；通过实验验证，基于HSI的极性相关测速法的响应速度快，信号记录的准确率高，是一种简单有效的技术方案。

Food and acetaldehyde for the preservation and improvement of taste.

美国食品中也加入乙醛，用以保鲜和改进味道。

The results of clinical assessment showed that levosimendan was safe and effective which could improve the prognosis of the patients and kept normal blood kinetics. By improving the reported synthetic route, levosimendan was synthesized from acetanilide via eight steps of reaction.

本论文探索了左西孟旦的合成路线，对文献报道的合成工艺进行了合理有效的改进，以乙酰苯胺为原料，最终经Friedel-Crafts反应，羰基α-位溴代，丙二酸二乙酯缩合，水解，脱羧，环合，拆分及重氮化加成等八步反应合成了左西孟旦。

Besides, reaction conditions including the concentration of acetic acid and the solvents of photochemical reaction were also studied.

通过研究乙酸浓度和光化溶剂对反应的影响，对合成工艺进行改进和优化。

It describes the process of acetylene leak and its accumulated explosion, and analyzes the accident reasons in detail.

介绍了发生事故公司的背景和工艺设备概况，描述了乙炔泄漏积聚爆炸事故的经过，详细地分析了事故原因，提出了应该吸取的教训以及相关的改进建议。

In this paper, acetylsalicylic acid, cyclohexanone Preparation of micro-content of the experimental design, in different reaction conditions were carried out under analysis to optimize the improvements and chemical experiments on the basis of conventional experimental and micro-experimental comparison, being The experimental results consistent with the premise, fully reflects the micro-chemistry experiments to save time, save the amount of reagents, as well as many advantages such as reducing environmental pollution.

本文阐述了乙酰水杨酸、环己酮微型化制备实验的设计内容，在不同反应条件下进行了对照分析，从而进行优化改进，并就基础化学实验中常规实验与微型实验进行比较，在得到一致的实验结果的前提下，充分体现了微型化学实验节省时间、节省试剂用量、以及减少环境污染等诸多优点。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。