基于Fabric的出行数据隐私保护方法

针对智能交通出行数据共享中的隐私保护问题,提出一种基于Fabric的出行数据隐私保护模型。利用区块链不可篡改、可追溯的特性,结合AES算法与访问控制列表机制,从出行数据的上传、查询和访问控制等方面对模型中Fabric区块链数据库、智能合约、中间件等模块进行设计和实现。安全性分析和实验结果表明,所提方法具有较好的安全性、保密性以及可行性,可以提高智能交通出行数据共享环境下的个人隐私安全。     

基于赋权交易模型的区块链技术的档案管理研究

为了保障电子档案管理的安全性,基于赋权交易模型的区块链技术对档案管理进行研究。首先建立一个基于区块链技术的框架,具有通用性、易维护性和易搭建性等特点;然后,由于UTXO模型没有解决非确定数值的交易,故针对档案特性对区块链交易中使用的UTXO模型进行改进,提出ET(赋权交易)模型;由于档案管理需要高成本以及高时效性,故采用Fabric的联盟链作为区块生成的方法,以此来降低成本、提高性能。仿真实验结果表明,基于赋权交易模型的区块链技术大大提升了档案管理的稳定性及可用性。     

Design of sculpture feeling sweaters北大核心

This artical lays emphasis on studying the application in fabric structure of exterior effect and fabrics processing method in the sculpture sweater fabric design. The fabric structure exterior effect study analyzed forms or feature about the basic fabric, colour fabric, multiple fabric combination, falbala, roll rim, concave & bulge, and other material combination effect. In fabrics processing method study, we analyzed the application in reverse, interweaving, accumulation, wear set, the suture, knitting, etc. As a result, in this design sculpture sweater we should combine these two kinds of processing method, so as to enrich the design of sculpture sweater, expand the sweaters space design for sweater potential and provide wider source of inspiration and creative ideas for sweater stylist.     

有机导电纤维应用方法的探讨

研究有机导电纤维应用方法对织物抗静电性能的影响.选择长丝嵌入与短纤混纺、单向嵌入与双向嵌入、有机导电纤维均匀分布与集中分布、机织物与针织物为研究对象,分别测试了织物的表面摩擦电荷密度.结果表明:有机导电纤维长丝嵌入比短纤混纺、双向分布比单向分布、均匀分布比集中分布更有利于提高织物的抗静电性能.织物的组织结构对织物的抗静电性能也有影响.     

提高纯涤帐篷布纬向强力的工艺实践

探讨提高纯涤帐篷布纬向强力的方法.通过测试在剑杆织机、喷气织机、有梭织机上织制的同一织物品种的纬向强力差异,分析了在不同织机上织制同一品种时进纬侧和出纬侧纬线断裂强度及断裂伸长率,认为在织造帐篷布时进纬侧和出纬侧纬线断裂强度无差异,强力利用系数对纯涤帐篷布纬向强力影响较大,减小经纬织缩率可以提高强力利用系数,从而提高织物的纬向强力.     

生产高密缎条织物的工艺调试要点

探讨在omniplus-190型喷气织机上生产特细号高密缎条织物的工艺调整方法.针对该品种总经根数多、织机效率低、布面质量差的问题,经过试验摸索,认为在穿筘工序采用每筘4入,在穿综工序地组织采用飞穿法、边组织采用纬重平穿法,在织造工序合理设定开口角、综框高度、开口时间、后梁、停经架、上机张力、引纬工艺等参数,可使织机效率由60%左右上升到85%左右,下机一等品率达98%.     

纯棉纬弹织物幅宽的控制体会

为了有效控制纯棉纬弹织物的幅宽,通过分析影响纬弹织物幅宽的诸多因素,认为在对全棉纬弹织物进行生产设计时,一定要从纱线线密度、经纬密、织物组织结构等方面分析对比,了解上机幅宽、坯布幅宽、煮练后幅宽、热定形后幅宽、成品幅宽的变化规律,掌握各品种的纬向总缩率.并以生产具体品种为例,分析了全棉纬弹织物幅宽设计的过程及思路,从而可在保证织造顺利进行的前提下满足客户的要求.     

Renewable Types and the Urban Plan

The notion of designing according to building type for some might imply constraint, or even a reversion to convention. In Diploma Unit 6 at the AA in London, Christopher Lee and Sam Jacoby have proved typology can be used to liberating effect, producing series that harness ‘the cumulative intelligence’ of type, while ‘surpassing both its idea and its deep structure’. Copyright © 2008 John Wiley & Sons, Ltd.     

基于四自由度视觉机器人的织物分拣方法

针对人工分拣织物效率低,劳动成本高,而且对工人身体产生危害的问题,提出机器视觉与机器人相结合代替人工分拣织物的方法,从而解决了人工分拣织物存在的缺陷。构造RBF神经网络的颜色分类器将不同颜色织物分类,利用阈值分割对目标织物进行分割;使用遍历中心扩散法求取机器人抓取织物的抓取点;经过摄像机标定和机器人轨迹规划实现机器人对纯色织物的自主分拣。实验结果表明,该方法分拣织物的准确率能够满足纺织业的实际应用需求。     

Determination of fault-tolerant fabric-cutting schedules in a just-in-time apparel manufacturing environment

In apparel manufacturing, accurate upstream fabric-cutting planning is crucial for the smoothness of downstream sewing operations. Effective and reliable fabric-cutting schedules are difficult to obtain because the apparel manufacturing environment is fuzzy and dynamic. In this paper, genetic algorithms and fuzzy-set theory are used to generate fault-tolerant fabric-cutting schedules in a just-in-time production environment. The proposed method is demonstrated by two cases with production data collected from a Hong Kong-owned garment production plant in China. Results of the two cases preliminarily show that the genetically improved fault-tolerant schedules effectively satisfy the demand for downstream production units, guarantee consistent and reliable system performance, and also reduce production costs through reduced operator idle time. More cases will be conducted in order to further validate the effectiveness of the proposed method.