ID 原文 译文
58488 该协议可快速检测不正确的输入，将 Hash 函数与椭圆曲线加密算法相结合，使登录和密码更新阶段更有效. The proposed protocol canquickly detect incorrect inputs. The proposed protocol combines the Hash function with the elliptic curveencryption algorithm，which makes its login and password update phases more efficient.
58489 通过形式化分析工具 BAN 逻辑和仿真实验对该协议进行安全及性能分析，发现其可以抵御常见的攻击，如仿冒、重放、在线或离线密码猜测等，同时在性能上也符合无线医疗传感器网络的应用需求. Finally，usingthe BAN logic analysis，it is given that the proposed scheme is more secure than other protocols. The pro?posed protocol’s computing performance and communication costs is also superior to other related authen?tication protocols.
58490 为了提高数据仓库的查询响应性能，避免视图集频繁调整引发的“抖动性”，提出了一种基于查询聚类的物化视图动态调整策略，运用关联规则挖掘方法计算属性字段相似性，进而计算查询语句相似性，并对一个查询周期内的查询语句集进行聚类，产生候选视图集，根据效益模型计算候选视图的效益，再运用物化视图动态调整算法生成物化视图. In order to improve performance of query response of data warehouse，and avoid the frequent“jitter”phenomenon for materialized views set caused by immediate adjustment algorithm，a dynamic ad?justment strategy of materialized views based on query clustering is presented. Firstly，attribute similaritycan be calculated based on method of mining association rules，then queries similarity can be calculatedand candidate views set can be generated by clustering the queries set during a statistical time，and thenthe benefits of candidate views can be calculated according to benefit model. Finally，the latest material?ized views can be selected using dynamic management algorithm of materialized views.
58491 在航空公司机票结算数据集上的实验结果表明，在单机环境和分布式环境下，较基准算法相比，所提出的方法均能显著提升数据仓库的查询响应性能，尤其是对高频查询语句的响应性能. Based on the ex?perimental results with data of air ticket settlement recorded by airlines. Whether in single-machine envi?ronment or distributed environment，compared to other benchmark algorithms，the overall performance ofquery response of data warehouse has been improved greatly，especially for high frequency queries.
58492 针对传统聚类算法难以处理大规模数据和对噪声数据敏感等问题，基于模糊 C 有序均值聚类算法( FCOM) ， 结合 single-pass 和 online 增量架构，分别提出了 single-pass 模糊 C 有序均值聚类算法( SPFCOM) 和 online 模糊 C 有序均值聚类算法( OFCOM) . Because traditional clustering algorithms are difficult to deal with large-scale data and sensitiveto noise data，based on the Fuzzy C-ordered-means clustering ( FCOM) algorithm，we propose a single?pass fuzzy C-ordered clustering algorithm，named SPFCOM，and an online fuzzy C-ordered clustering al?gorithm，named OFCOM，by combining single-pass and online incremental architectures respectively.
58493 SPFCOM 和 OFCOM 算法首先对 FCOM 算法加权，然后以数据块为单位对数据集合进行增量式处理. These two algorithms weight the FCOM algorithm，and incrementally process the large-scale data chunkby chunk.
58494 实验结果表明，相较于对比算法，SPFCOM 和 OFCOM 算法在聚类准确率方面得到了提高，还具有更强的鲁棒性. Experimental results show that，compared with other similar prominent algorithms，the SPF?COM and OFCOM algorithms can achieve higher accuracy and better robustness.
58495 为了提高 5G 系统的终端接入数量，提出了一种混合多址随机接入机制，使终端能够根据预测的信噪比和预定义的切换门限选择正交多址或非正交多址的方式进行随机接入. In order to increase the number of access in the fifth-generation systems，a hybrid multiplerandom access ( ＲA) scheme is proposed. The proposed scheme allows user equipments to select theorthogonal multiple access ( OMA) ＲA or the non-orthogonal multiple access ( NOMA) ＲA by a predic?ted signal noise ratio and predefined thresholds.
58496 为了提高干扰消除接收机的性能，在非正交随机接入时采用功率回退的方法保证基站收到不同功率的叠加信号. In order to improve the performance of interference can?celation，a power back-off scheme is applied to guarantee the received powers of overlapped signals arediverse.
58497 此外，理论分析了混合多址随机接入的接入性能，并给出了数值仿真结果和实际系统仿真结果. In addition，the access performance of hybrid ＲA is theoretically analyzed. In the simulation，both numerical results and simulation results in practical systems are provided.