旅游类APP分析与交互设计

在我国旅游行业高速发展以及信息化技术普及应用的背景下,旅游类APP的产生与创新成为旅游行业现代化发展过程中的重要组成部分,备受人们的喜爱.基于社会的需求,旅游类APP用户体验性的强化已成为旅游类APP研究的重要趋势.基于此,本文对从用户体验设计、界面设计以及UGC模式下的交互设计风方面对于旅游类APP进行了分析,以供参考.     

小众APP开发的发展趋势及前景

随着互联网时代科技的发展,越来越多智能科技技术开始得以兴起,并且在手机移动终端市场中占据非常重要的位置.其中,APP是基于苹果软件进行手机移动开发平台,将诸多丰富新奇的软件进行开发和推广,实现掌上客户的绑定,进而达到市场占有率和推广的目的.本文基于对通用型APP应用开发分析进而探讨小众APP应用开发技术前景和未来发展.     

基于资源签名的Android应用相似性快速检测方法

由于盗版Android应用（Android Application,简称APP）通常保持着与正版APP相似的用户体验,因此本文提出一种基于资源签名的APP相似性快速检测方法.该方法将APP的资源签名视为字符串集合,利用计算任意一对APP资源签名集合的Jaccard系数判断两者的相似性.为了避免遍历全部的APP对,该方法将MinHash和LSH（Locality Sensitive Hashing）算法的思路引入其中,通过从APP集合中挑选候选对并对候选对进行检验的方式获得最终的检测结果.由于挑选候选对的方式将大量相似性较低的APP对排除在外,因此该方法可以明显地提高APP相似性的检测速度.实验结果表明,该方法的检测速度比现有方法FSquaDRA提高了大约30倍,而检测结果与FSquaDRA几乎完全相同.     

基于Android的运动APP开发与实现

立足于智能手机Android系统,通过对需求和功能的分析与论证,采用Java语言,设计了一个基于Android的运动APP.此APP实现了对运动参数的设置,运动数据的采集、记录和显示,运动结果的汇总、统计、分析和排名等功能.通过测试,此APP监测实时性好,准确率高,在运动数据监测领域有一定的应用价值.     

基于移动设备的新型亲子互动平台的探索与研发

APP的出现给人们的生活带来前所未有的变化,也对亲子互动教育带来发展契机.利用APP进行亲子互动教育,不仅能减少APP对孩子的不利影响,也可以增加家庭的凝聚力.基于Android平台,以智能设备为依托,让父母与孩子通过APP,以脑力和体力游戏的方式进行互动,实现肌体运动与精神娱乐的结合.Kinect通过无接触式操作识别人体的各种活动,可以让亲子丢掉各种设备,更加自然地实现亲子互动.     

融入推荐算法的政采消息通系统设计与实现

面向各类应用场景的移动APP不断涌现,但富有特色的政府采购APP却不多见.文中基于政府采购信息化现状,以政府采购信息的重组织和再利用为目标,针对投标参与方实际需求,结合移动终端应用特点,实现了一个融入推荐算法的政采消息通系统.首先,采集和重组政府采购网站的数据;其次,实现服务于移动APP的数据访问接口;最后,通过And...     

基于Scrum的旅游类APP敏捷测试研究

随着旅游产业移动互联网大时代的到来,旅游类APP产品的数量正与日俱增,如何保障APP产品的质量成为其敏捷开发过程中不容忽视的重要环节.本文通过分析敏捷测试的研究现状,结合峨眉山智慧旅游APP项目阐述基于Scrum的敏捷测试实施流程,为敏捷测试在旅游类移动应用领域中的实践提供了参考.     

移动APP内容爬虫方法研究

移动互联网的迅猛发展,使得智能手机已经取代个人电脑成为新的技术风口.APP之于智能手机,就如同网站之于个人电脑,成为新媒体时代内容分发的入口.传统基于网站的互联网爬虫已经有成熟的方案,而针对移动APP的爬虫,则需要做一些改进.本文以国内流行的内容APP《今日头条》为例,探讨移动环境下内容爬虫系统的研究方法.     

基于用户行为分析的APP用户知识图谱构建

为了更好地帮助开发者理解用户需求，从而优化APP功能和体验，提高用户满意度，文中提出一种基于用户行为分析的APP用户知识图谱构建方法。首先从用户行为分析出发，通过APP用户评论细化用户行为；接着，通过APP用户行为与用户关系属性的映射抽取用户关系属性；最后，基于关系抽取结果构建APP用户知识图谱。通过相关算法进行APP用户知识图谱的构建，结果证明了该算法的有效性，能够创建出信息更为丰富的APP用户知识图谱。     

基于App Inventor的地铁APP设计

地铁具有安全、准点、快捷、舒适、环保等特点,是人们交通出行的首选.本文基于App Inventor开发工具,设计了一款地铁APP.该APP具有查询地铁时间、各线路历史信息、各站点间票价、各站点介绍、地铁口导航及休闲游戏等功能.通过各项测试,此APP使用方便、功能齐全、实用性好,在城市地铁中有一定的应用价值.     

红外仿真中像面最大温差的计算方法

针对红外仿真系统中杂散辐射会影响模拟像面温度均匀性的问题,提出了像面温度偏差这一概念,并给出了像面最大温度偏差值的计算方法.建立了用于计算像面最大温差的红外仿真系统简化模型.定义了能反映像面温度变化的局部辐照度偏差系数.推导了局部辐照度偏差系数与像面最大温差的表达式,给出了红外仿真系统像面最大温差的一般计算步骤.通过实际算例演示了该计算方法,并设计了验证实验.结果表明,测试得到的像面最大温差均在理论计算数值范围内,从而验证了该方法的正确性和有效性.     

一种简单可行的通信系统效能评估方法

军事通信系统是夺取信息化战争主动权的重要保证,分析和评价通信系统的效能及其对作战的影响具有重要意义。给出了一种简单可行的通信系统效能评估方法,首先通过对作战应用需求总目标的逐级分解,构建通信系统效能评估指标体系;然后基于层次分析法对指标体系进行权重评估;最后基于模糊数学方法完成多级模糊综合效能评估。采用本方法可对通信系统的系统体系结构、技术体系结构进行综合评估以检验其可行性、合理性,能够为决策者提供通信系统优化配置的辅助决策依据。     

Edge node buffer usage in optical burst switching networks

Optical Burst Switching (OBS) combines the benefits of Optical Packet Switching and Optical Circuit Switching technologies to provide an efficient, yet cost effective, method for data transmission in an all-optical, bufferless, core network. While most studies on OBS has concentrated on the core OBS network, we contribute new studies for the buffer requirement of an OBS edge node. The buffer usage for OBS systems only arises in the edge nodes since they contain an array of assemblers which combines electronic data with a common destination into an OBS burst stream for transmission in an all-optical bufferless core network. Specifically, we present two analytical results for buffer usage in an OBS edge node: one for Poisson traffic and the other for self-similar traffic input. The results show that the aggregated traffic from many assemblers inherits the characteristics of the source input traffic. This means that the output traffic approaches Poisson if the input traffic is Poisson, and the output traffic remains self-similar if the input is self-similar. These results lead to the following important design issues when dimensioning buffer requirements in an OBS edge node: if the traffic input is Poisson, the M/G/m model is the model to use for obtaining the upper bound on buffer usage in an OBS edge node; and for the case of self-similar traffic, Brichet’s method can be used to provide the upper and lower bound.     

An Integrated Framework for the Design and Optimization of SOC Test Solutions

We propose an integrated framework for the design of SOC test solutions, which includes a set of algorithms for early design space exploration as well as extensive optimization for the final solution. The framework deals with test scheduling, test access mechanism design, test sets selection, and test resource placement. Our approach minimizes the test application time and the cost of the test access mechanism while considering constraints on tests and power consumption. The main feature of our approach is that it provides an integrated design environment to treat several different tasks at the same time, which were traditionally dealt with as separate problems. We have made an implementation of the proposed heuristic used for the early design space exploration and an implementation based on Simulated Annealing for the extensive optimization. Experiments on several benchmarks and industrial designs show the usefulness and efficiency of our approach.     

An upper bound delay for the virtual-clock service discipline

Proves that a connection composed of virtual-clock servers provides an upper bound on delay for leaky bucket constrained sessions, i.e., sessions conforming to a token bucket filter. This upper bound on delay is calculated, and it is the same upper bound on delay given by PGPS. The authors also prove that leaky bucket constrained sessions are the only type of sessions for which an upper bound on delay can be provided by servers with an upper bound on link capacity     

混合型多值CMOS电路的代数理论

该文在传输函数理论和电流型CMOS电路代数理论的基础上,提出了混合型多值CMOS电路的代数理论,并应用该理论设计了译码器和编码器。设计结果表明基于该代数理论的设计优于传统设计。     

多层电厚微带天线的阻抗特性

本文提出了一种多层介质电厚微带天线的一种分析方法。从无界空间中的电并矢格林函数出发,导出了分层介质中任意一点具有任意取向的水平电偶极子场的表达式。以此为基础,利用Richmond反作用积分方程,建立了关于贴片上电流分布的积分方程。通过适当选取电流基函数,使本方法适用于电厚介质微带天线。应用Galerkin方法建立矩阵方程。借助于计算机求解该矩阵方程,可得到天线的各项特性。文中用实例进行了验证。     

Millimetre-wave InP antenna for monolithic integration

A printed antenna realised on an indium phosphide wafer is presented. The antenna provides an efficient, broadband antenna solution for MMIC/OEIC systems and subsystems. The antenna is based on an aperture coupled patch architecture with the substrates layers in a hi-lo configuration. Measured results exhibit an impedance bandwidth of around 12% for VSWR<2, and a gain of 8 dBi.     

Computing illumination-invariant descriptors of spatially filteredcolor image regions

Spatial filters provide a useful and efficient means of analyzing an input color image into components that capture different spatial properties. Representations based on spatial filtering have restricted usefulness for recognition, however, because the output of a spatial filter across an image depends on the scene illumination conditions. We use a physically accurate linear model for spectral reflectance to derive invariants of distributions in spatially filtered color images that do not depend on the scene illumination. These invariants can be used for the illumination-invariant recognition of regions following an arbitrary linear filtering operation. We describe a method for illumination correction based on color distributions and introduce an illumination change consistency constraint that is useful for verifying matches obtained using the invariants. We show, using a set of classification experiments, that the filtered distribution invariants can significantly improve the capability of a recognition system in environments where illumination cannot be controlled.     

Bounds and approximations for optimum combining of signals in the presence of multiple cochannel interferers and thermal noise

We derive an upper bound and investigate some approximations on the symbol error probability (SEP) for coherent detection of M-ary phase-shift keying, using an array of antennas with optimum combining in wireless systems in the presence of multiple uncorrelated equal-power cochannel interferers and thermal noise in a Rayleigh fading environment. Our results are general and valid for an arbitrary number of antenna elements as well as an arbitrary number of interferers. In particular, the exact SEP is derived for an arbitrary number of antennas and interferers; the computational complexity of the exact solution depends on the minimum number of antennas and interferers. Moreover, closed-form approximations are provided for the cases of dual optimum combining with an arbitrary number of interferers, and of two interferers with an arbitrary number of antenna elements. We show that our bounds and approximations are close to Monte Carlo simulation results for all cases considered in this paper.