大数据时代下移动通信行业微营销的研究

目前支撑市场营销的客户群体画像只依赖传统BSS域数据,包括客户的消费习惯、通话习惯、业务受理习惯等。随着人们移动互联网行为习惯的培养,以往的方法难以完整的描述客户群体特征。描述了借助大数据相关技术和思想,引入OSS域数据,包括客户互联网行为数据,完善客户对互联网业务的习惯,较完整地对客户群体进行画像,从而进行更精准的市场微营销。     

沥青加注池的设计和制作

沥青混凝土拌和成套设备目前在高等级公路领域应用非常广泛,由于生产厂家通常不配置相应的沥青加注池,给沥青的灌装造成不便。根据工程实际需求,自行设计制作出与J4000型沥青拌和设备配套使用的沥青加注池,实际使用效果良好,沥青灌装效率高。介绍沥青加注池的主要组成及各组成部分的设计过程。     

混合的记忆

<正>春节少不了同学聚会,而今年恰是我的母校——百年名校雅礼中学的新建教学楼落成后的第一个春节。在大家漫不经心的回忆里,仍旧是斑驳的红砖房与房子后面的那个院子。席间,有人感叹,真是找不到那旧时的影子了。我知道改变一个建筑行为的最终目的大概是将一个平衡改变为另一个平衡。日子的飞奔也大抵是与遗忘成正比的,当多年后的今天,我们能掏出时间来回忆往事,是我们的日子总算开始慢了下来的证据。因为新教学楼大部分是自己的手笔,带着对孩     

Curing behavior and processability of BMI/3‐APN system for advanced glass fiber composite laminates

The prepolymers containing bismaleimide (BMI) and 3‐aminophenoxyphthalonitrile (3‐APN) were prepared through simple solution prepolymerization, and the corresponding curing behaviors and processability were investigated by differential scanning calorimetry and dynamic rheological analysis. The results showed that the processability of the prepolymers could be controlled by temperature and time on processing, also depended on the relative content of 3‐APN and BMI. The possible curing reactions of the prepolymers were studied by Fourier transform infrared spectroscopy, which involved the Michael addition between BMI and 3‐APN and self‐polymerization of BMI or 3‐APN. The resulting polymers displayed high thermo‐oxidative stabilities (T_5% > 425 °C) and good adhesion capability. Furthermore, BMI/3‐APN systems were employed to prepare BMI/3‐APN/glass fiber (GF) composite laminates and their morphological, mechanical, and electrical stable properties were also investigated. The BMI/3‐APN/GF laminates exhibited the improvement of the mechanical properties (the maximum flexural strength is 633.5 MPa and flexural modulus is 38.7 GPa) compared with pristine BMI/GF laminates because of the strong interfacial adhesions between GF and matrices, which was confirmed with SEM observations. This study provides a concise strategy for diversifying the preparation of BMI/3‐APN prepolymers to obtain advanced GF composite laminates with various properties which have potential applications in industrial manufacture or electronic circuit, and so on. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133, 43640.