新型变幅钢丝绳穿绳工艺

为了缩短浮式起重机分段式变幅钢丝绳的穿绳周期,对传统穿绳工艺进行改进。对分段式变幅钢丝绳的结构特点进行分析,并设计工艺托辊、中间变幅滑轮托架、臂架搁架等工装,创新性地将穿绳工作分成臂架上固定端穿绳和人字架活动端穿绳2大部分。运用该新型穿绳工艺可将穿绳工作提前至臂架总装前,减少高空作业风险。     

全面透析中国SUV市场

本文对SUV市场变化和竞争格局进行了详尽的剖析，并对SUV的发展幅度进行了预测，具有一定的指导意义。     

Improving Mobility Management for AII-IP Radio Heterogeneous Network Using SCTP

Mobility management is a very important function of mobile communication in all-IP radio heterogeneous network. In order to achieve an efficient mobility management, with low delay and low beacon overhead, a micromobile stream control transmission protocol （mmSCTP） scheme was proposed. This scheme reasonably utilizes SCTP features and elaborately designs execution-steps for vertical handoff. Moreover, it provides fast locating for idle mobile node when a session is initiated by the correspondent node. The analytical and simulation results show that the proposed scheme is effective in supporting fast vertical handoff and effective location management.     

固定式浮式起重机臂架搁架设计

在固定式浮式起重机上穿引钢丝绳时需要大型起重设备参与全程辅助吊装,存在费用高、安全风险大、不确定因素多等问题。为改变传统穿绳工艺,对固定式浮式起重机臂架结构特点进行分析,并经有限元受力分析计算,创新性地研发出一种臂架搁架工装设备。该搁架工装设备彻底改变固定式浮式起重机的穿绳工艺,使穿绳工作更安全、高效。     

我国汽车市场容量及趋势分析

近年来,全球汽车业的增长动力主要来源于中国、印度和拉丁美洲汽车市场的强劲增长,而美国、加拿大、西欧和日本等成熟汽车市场由于受到经济增速放缓的影响而表现乏力。中国汽车市场的高速增长对全球的贡献最为突出。2006年中国汽车市场的增量占全球汽车市场增量的50%左右,市场占有率达10.7%,但整体汽车消费水平还不高。预测2010年我国汽车保有量将高达6000万辆,私人轿车的保有量也将达到2700～3000万辆。     

A Combined Speaker Adaptation Method for Mandarin Speech Recognition

A speaker adaptation method that combines transformation matrix linear interpolation with maximum a posteriori (MAP) was proposed. Firstly this method can keep the asymptotical characteristic of MAP. Secondly,as the method uses linear interpolation with several speaker-dependent (SD) transformation matrixes, it can fully use the prior knowledge and keep fast adaptation. The experimental results show that the combined method achieves an 8.24% word error rate reduction with only one adaptation utterance, and keeps asymptotic to the performance of SD model for large amounts of adaotation data.     

我国微型客车市场现状及发展趋势研究

2008年以前，微型客车发展速度一直远低于我国乘用车整体的发展速度，微型客车一度被边缘化。但随着我国国家汽车产业结构调整及对节能环保汽车重视程度的提高，微型客车在我国乘用车市场中的地位越来越重要。在国内，微型客车主要是以生产资料的形式出现，其装载能力与经济效益有直接关系，所以无论是从载货还是载人的角度来分析，用户都会更倾向于购买大型化的微型客车，以增加效率和收益。     

综合大联调期间车辆专业的联调及演练

通过参与西安地铁2号线车辆的调试、预验收、综合联调及演练的整个过程,列举出综合联调及演练期间车辆专业人员的主要任务,如车辆预验收工作的开展、各种检修规程及应急类文本的验证、员工技术技能的提高等.并探讨了综合联调及演练期间车辆专业人员重点工作的推进及注意事项.     

Fuzzy C-Means Clustering Based Phonetic Tied-Mixture HMM in Speech Recognition

A fuzzy clustering analysis based phonetic tied-mixture HMM (FPTM) was presented to decrease parameter size and improve robustness of parameter training. FPTM was synthesized from state-tied HMMs by a modified fuzzy C-means clustering algorithm. Each Gaussian codebook of FPTM was built from Gaussian components within the same root node in phonetic decision tree. The experimental results on large vocabulary Mandarin speech recognition show that compared with conventional phonetic tied-mixture HMM and state-tied HMM with approximately the same number of Gaussian mixtures, FPTM achieves word error rate reductions by 4.84% and 13.02% respectively. Combining the two schemes of mixing weights pruning and Gaussian centers fuzzy merging, a significantly parameter size reduction was achieved with little impact on recognition accuracy.     

Improving Mobility Management for All-IP Radio Heterogeneous Network Using SCTP

IntroductionFuture mobile communication network willconsist of multiple traffics and access technologies.It is to certainty a radio heterogeneous network(RHN) because none of the current networks canprovide ubiquitous coverage and all-around ser-vices[1]. Future mobile terminal will be multi-modethat maintains connectivity to different radio accesspoints, so RHN should be scalable and support theevolution and upgrade of individual network ele-ments. All-IP architecture is an inevitable way…