蓝牙安全研究

蓝牙是一种短距离射频（RF）通信开放标准。蓝牙技术主要用于建立无线个人局域网（WPAN）,并已被集成到多种类型的企业和消费者电子设备。本文介绍了蓝牙的技术特点、安全功能、存在的脆弱性和面临的威胁,并给出了蓝牙安全风险缓解对策建议。     

Will ultrawideband technology connect in the marketplace?

Companies and individuals are using an increasing number of computers, peripherals, mobile devices, consumer electronics, and other machines in their offices or houses. For convenience, many users want to network these devices. Bluetooth radio-based, short-range, wireless-networking technology has received considerable attention as a means for accomplishing this. However, ultrawideband, a 30-year old military communications technology, is now being revitalized for wirelessly connecting devices over short distances. Many industry observers say UWB could prove more successful than Bluetooth because it is faster, less expensive, and uses less power.     

蓝牙-家庭网络中服务调用的设计和实现

家庭网络是一种新兴的网络。面向普通家庭的特点决定了家庭网络对于服务调用的实现接口要求更简单更方便。蓝牙技术凭借良好的技术特点在家庭网络中有着广阔的应用前景。但是SIG规范并未给出如何实现具体的服务调用。本文分析了现有的服务调用方式。探讨了家庭网络的结构特点，并由此设计了针对家庭网络的服务调用模型：以XML为核心．SOAP和蓝牙SDP模块共用的方式，并在我们设计的家庭网络系统中进行了实现。     

基于蓝牙通信的流量测控系统设计与实现

蓝牙是一种低功耗、短距离的无线通信技术。将其用于工业控制中。开发了一种基于蓝牙技术的通信模块，研制了基于蓝牙通信的电磁流量计，建立了基于蓝牙通信的流量测控系统。有效地解决了不便于有线通信的工业现场通信问题。     

XML/EDI中航运托运单的DTD标准

EDI是现代电子商务的重要组成部分，随着互联网技术的高速发展和PC的普及，相比传统的EDI，XML与EDI的融合——XML/EDI更为智能、更为便宜和具有更高可维护性。该文通过对航运托运单的结构分析，提出了一个集装箱运输的DTD文档定义。     

蓝牙网络的QoS

蓝牙是一种无线通信的工业标准，其标准支持的QoS有很多缺陷。文章概述了在无线链路特别是蓝牙链路上的服务质量，并提出了一个QoS框架。     

蓝牙网络中的QoS的流控研究

蓝牙是一种无线通信的工业标准，其标准支持的QoS有很多缺陷。本文概述了在无线链路特别是蓝牙链路上的服务质量，并提出了一个QoS框架。     

Analysis on the evolution of shipping logistics service supply chain market structure under the application of blockchain technology

With the digital transformation of the shipping industry, the business potential of shipping companies is gradually expanding. In recent years, shipping companies have begun operating freight forwarding businesses powered by the advantages of cost and network. As a result, their business expansion and gradually occupying the market share of agency services. At the same time, the development requirements of digitization are further highlighted, while the problems of opaque information and inaccurate data in the operation of the shipping logistics service supply chain have become more prominent. Thus, the shipping industry has begun to apply Blockchain Technology (BCT) to the shipping logistics. However, the promotion of BCT, an emerging technology in the shipping logistics service market, is not systematic. The members of the supply chain do not have a deep understanding of it, which have led to changes in market demand. We take the shipping logistics service supply chain composed of shipping companies and freight forwarders as the research object in order to investigate the vertical competition between shipping companies and freight forwarders as well as the impact of BCT application on market structure changes. From the perspectives of freight rate competition and the promotion of BCT, the Stackelberg game theory is applied to create a mathematical model that can be used to discuss the evolution of the shipping logistics service market. The results indicate that, the impact of freight rate competition on market evolution is reduced after the application of BCT. Shipping companies should actively promote BCT to reduce the impact of freight competition on the market. Furthermore, freight forwarders can actively participate in the initial stage of application to increase market demand, and the cost of promoting BCT should be reduced in the later stage.     

蓝牙技术及其现状与发展浅析

蓝牙技术是最近几年新发展起来的一种通用短距离无线数据/话音通信标准(或称作连接协议)。概 述了蓝牙的发展过程、技术特点及组网能力;介绍了蓝牙技术的应用领域以及有待解决的问题与未来发展趋势。     

Bilateral slot exchange and co-allocation for liner alliance carriers of containerized maritime logistics

With the maritime logistics technology evolving toward standardization and modernization, container liner shipping has become the most valued mode of transportation in the shipping industry. Liner carriers share resources in the alliance-based mode to achieve synergy. Specifically, slot exchange is a key and effective alliance-based means to enhance competitiveness and operational effectiveness. To this end, this article looks at how to optimize slot capacity allocation within a container liner alliance under the slot exchange mode in the containerized maritime logistics industry. First, we explained the slot exchange concept and its impact on the shipping business. Second, we identified the key factors that may affect slot allocation decisions. Then we established an optimal multi-objective slot exchange allocation model for liner alliances and solved the problem with the NSGA-II algorithm. Finally, taking the cooperation of two carriers on two trans-Pacific routes as an example, we used the model to establish the optimal slot exchange strategy for each carrier on the shipping alliance's routes to verify the practical application value of this model. The results showed that the model proposed in this article can help develop an optimal slot allocation plan, providing a scientific and effective tool for container liner alliances to formulate slot exchange and allocation strategies.     

一种基于Android蓝牙技术的点对点聊天工具

为了解决无网络环境下的短距离通信问题,设计并实现了一种基于Android蓝牙技术的点对点聊天工具。两台 移动设备通过蓝牙Socket 进行连接,无需外网即可实现聊天功能,是蓝牙技术在移动社交应用领域的一次尝试。     

蓝牙网络的带宽容量分析

目前,无线个人域网(WPAN)的发展已经吸引了人们的特别关注,其中的蓝牙技术就是一种新兴的WPAN技术。蓝牙是一种短距离的无线通信技术,它的带宽资源非常有限,因此合理利用蓝牙网络的带宽以及有效地分配带宽资源就成为了目前蓝牙网络发展的一个重要方面。该文在介绍蓝牙网络、比较蓝牙网络与IEEE802.11无线局域网(WLAN)的基础上,对蓝牙网络的容量进行了定量分析,并分析了其网络模型,给出了链路的容量条件。此外,还分析了无线网络在资源分配时所使用的流量模型。这两个模型的相同之处就在于都可以通过凸形优化问题来解决容量的分配。     

基于Bluetooth和智能手机的无绳电话应用方案*

从接入点结合Bluetooth智能手机出发,设计一种无绳电话应用方案。从功能上讲相当于Bluetooth无绳电话。不过是以一种应用方式,并以智能手机为平台建立。首先论述了智能手机和Bluetooth技术,然后在这基础上提出了本应用方案;最后重点阐述了方案的关键技术。     

基于J2ME的地理信息数据采集的系统分析与实现

Java开发平台的微型版J2ME和蓝牙技术给无线通讯提出了新的解决方案,在支持J2ME技术的Java手机上,结合JSR-82技术规范,建立了适合移动用户使用的地理信息数据采集系统,从而增强了智能手机的功能。本文以Java手机与蓝牙GPS传输数据为主要内容,设计和实现了一个原型系统并进行了实验。     

基于GPRS／蓝牙混合模式的车辆定位监控算法研究

为了更好地对道路中行驶的车辆进行监控,节约成本,本文提出一种基于GPRS和蓝牙相结合的车辆监控系统。车辆监控系统是一种集GPS、GIS、通讯技术和计算机技术为一体的移动车辆综合服务系统。文中介绍了GPRS和蓝牙相结合的车辆监控系统的整体结构和功能模块划分,以及监控中心模块的主要功能实现方法。另外,讨论了在监控中心模块设计中的关键技术,详细分析了蓝牙和GPRS相结合的实现方法。同时,本文提出了一种基于缓冲原理的GPS数据道路配匹算法,该算法在实际工程运用中取得了良好的效果
。     

RFID技术在Android系统上的应用实现

在物联网的时代背景下,Android智能手机系统和蓝牙等无线技术的应用范围越来越广。Android平台下各个功能模块和无线技术已成为当今研究的热点。通过分析Android平台下蓝牙自底向上的所有技术细节,并通过蓝牙将Android设备与RFID设备进行连接使用,来促进Android平台下蓝牙技术的发展和应用,进而促进物联网的发展。     

基于蓝牙的PC双机数据通信的实现

蓝牙是一种较新的无线短距离通信技术,它使笔记本电脑、移动电话和其他便携式设备及家用设备可以相互交换信息。本文探讨了蓝牙通信的最重要的方面——基于HCI指令的蓝牙串口通信。通过对指令的探讨,利用软件开发环境LabVIEW实现了PC机间由蓝牙模块模拟的空中串口(RS232)通信。     

蓝牙技术及其安全机制研究

蓝牙是一种新的短距离无线通信技术。介绍了蓝牙技术的主要特点,详细探讨了蓝牙技术的安全机制,最后分析了蓝牙技术存在的问题。     

蓝牙技术在行车无线通信中的应用

介绍蓝牙技术的基本概念和一些技术特征,讨论了利用蓝牙手机和电脑的蓝牙无线连线功能实现行车无线通信的方法。     

基于Bluetooth OBEX协议的文件传输应用的研究

本文研究了蓝牙体系结构中的OBEX协议，仔细分析了OBEX协议的原理及结构，以及OBEX协议在蓝牙协议栈中的地位。着重讨论了基于OBEX的文件传输应用的实现技术，最后介绍了蓝牙设备间通过无线信道传输文件的一个实例。