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2018 IEEE 9th Annual Information Technology, Electronics and Mobile Communication Conference (IEMCON)最新文献

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A New Set of Bluetooth-Based Fingerprinting Algorithms for Indoor Location Services 一套新的基于蓝牙的室内定位服务指纹识别算法
Tarek El Salti, Mark Orlando, Simon Hood, Gerhard Knelsen, Melanie Iarocci, Zachary Lazzara, Yongmei Xie, Joseph Chun-Chung Cheung, I. Woungang
Indoor Location Based Services (LBSs) are likely to make significant contributions to society and the economy in the near future. Unlike outdoor LBSs, the technologies and methodologies used are still very much under development, and there are a number of challenges which must be addressed, namely: accuracy, precision, and time complexity. For the accuracy metric, the Euclidean distance error is calculated based on the difference between the known location (points of interests) and the localized position. Regarding the precision metric, the distribution of the distance errors is computed. In this paper, new fingerprinting-based algorithms, namely, the Nearest Neighbor Version 2 (NNV2), Nearest Neighbor Version 3 (NNV3) and Nearest Neighbor Version 4 (NNV4), are proposed, and tested to determine the most effective and efficient one with respect to those challenges. Our analysis reveals that: (1) the time complexity for each of the Nearest Neighbour (NN) and KNN algorithms (i.e., K is constant) is $(1ast mathbf{n}ast mathbf{m}+1ast mathbf{m})$ -comparison which is more than that for NNV2 and NNV4 (i.e., n is the number of centroids between any two rows, m refers to the Received Signal Strength Indicators (RSSIs) acquired at the offline stage, and 1 is the number of rows that holds some of the grid points), (2) NNV4 outperforms the NN, KNN and Path-loss based Fingerprint Localization algorithms (PFL) in terms of accuracy by approximately 29%, 13%, 22%; respectively, (3) NNV4 outperforms the NN, KNN and PFL in terms of precision by approximately 53%, 28%, 52%; respectively, and (4) NNV4 has a lower probability of positional error compared to those for the existing indoor localization algorithms.
在不久的将来,基于室内位置的服务(lbs)可能会对社会和经济做出重大贡献。与户外lbs不同,所使用的技术和方法仍处于开发阶段,必须解决许多挑战,即:准确性、精度和时间复杂性。对于精度度量,基于已知位置(兴趣点)与定位位置之间的差计算欧几里得距离误差。对于精度度量,计算了距离误差的分布。本文提出了新的基于指纹识别的算法,即最近邻版本2 (NNV2),最近邻版本3 (NNV3)和最近邻版本4 (NNV4),并对其进行了测试,以确定针对这些挑战最有效和最高效的算法。我们的分析显示:(1)最近邻(NN)和KNN算法(即K为常数)的时间复杂度为$(1ast mathbf{n}ast mathbf{m}+1ast mathbf{m})$ -比NNV2和NNV4(即n为任意两行之间的形心数,m为离线阶段获取的接收信号强度指标(rssi), 1为保存一些网格点的行数),(2)NNV4优于NN;KNN和基于路径损失的指纹定位算法(PFL)的准确率分别约为29%、13%和22%;(3) NNV4在精度方面分别优于NN、KNN和PFL,分别约为53%、28%和52%;(4)与现有室内定位算法相比,NNV4具有较低的位置误差概率。
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引用次数: 5
Why Pakistani Software Companies don't use Best Practices for Requirement Engineering Processes 为什么巴基斯坦软件公司不使用需求工程过程的最佳实践
I. Zafar, Asma Shaheen, A. Nazir, B. Maqbool, Wasi Haider Butt, Jahan Zeb
Requirement engineering (RE) is initial and critical phase of software engineering. The success of software project is based on good requirement engineering practices. The purpose of requirement engineering practices is to elicit all intended user needs and document them for clarity of understanding and for future reference. In developing countries like Pakistan best RE practices are not fully used in software industry. In this study, major reasons for not using best RE practices are identified based on literature review of research work done related to RE in different countries. Literature review revealed that lack of knowledge of requirement engineering processes, lack of cost, lack of time are major factors behind not using RE practices in software development. A survey was conducted to base on factors identified to highlight major obstacles in way of using best requirement engineering practices in Pakistan. Survey results depicted the main issues are lack of budget, lack of time, lack of dedicated team and communication difficulties.
需求工程(RE)是软件工程的初始阶段和关键阶段。软件项目的成功建立在良好的需求工程实践的基础上。需求工程实践的目的是引出所有预期的用户需求,并为清晰的理解和将来的参考记录它们。在巴基斯坦这样的发展中国家,最佳的可再生能源实践并没有完全应用于软件行业。在本研究中,通过对不同国家可再生能源相关研究工作的文献综述,确定了不采用最佳可再生能源实践的主要原因。文献回顾表明,缺乏对需求工程过程的了解、缺乏成本、缺乏时间是在软件开发中不使用可再生能源实践的主要因素。进行了一项调查,以确定的因素为基础,突出了在巴基斯坦使用最佳需求工程实践的主要障碍。调查结果描述的主要问题是缺乏预算,缺乏时间,缺乏专门的团队和沟通困难。
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引用次数: 4
A practical study on Bluetooth Low Energy (BLE) throughput 蓝牙低功耗(BLE)吞吐量的实际研究
F. J. Dian, A. Yousefi, Sungjoon Lim
the data rate of Bluetooth Low Energy (BLE) is 1Mbps, and 2Mbps for BLE 4.2 and BLE 5, respectively. However, the throughput of a BLE system would be much lower since we need to account for various protocol overheads, adaptive RF connection adjustments for maintaining robust links amid interference, and protocol limitations based on BLE data exchange strategy and operations such as connection intervals, packet size and packet acknowledgment scheme. In this paper, we practically investigate the maximum throughput achievable in a simple BLE 4.2 network of two nodes, used in a data logging application. In this type of application, one node always has data to transmit and the other node which collects the transmitted sensor data does not have any data to send. We will also consider the effect of BLE parameters in this study. The result of our study shows that the maximum amount of throughput is 221.7 kbps for this application under the condition that the wireless link is error free and application always has data to transmit.
BLE (Bluetooth Low Energy)协议的数据速率为1Mbps, BLE 4.2协议为2Mbps, BLE 5协议为2Mbps。然而,BLE系统的吞吐量会低得多,因为我们需要考虑各种协议开销、自适应RF连接调整以在干扰中保持稳健的链路,以及基于BLE数据交换策略和操作(如连接间隔、数据包大小和数据包确认方案)的协议限制。在本文中,我们实际研究了在数据记录应用中使用的简单双节点BLE 4.2网络所能实现的最大吞吐量。在这种类型的应用程序中,一个节点总是有数据要传输,而收集传输的传感器数据的另一个节点没有任何数据要发送。我们还将在本研究中考虑BLE参数的影响。研究结果表明,在无线链路无差错且应用程序始终有数据传输的情况下,该应用程序的最大吞吐量为221.7 kbps。
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引用次数: 30
Cloud-Based Cognitive Radio Adhoc Vehicular Network Architecture: A Next-Generation Smart City 基于云的认知无线自组织车辆网络架构:下一代智慧城市
K. Ghanshala, Sachin Sharma, S. Mohan, R. Joshi
In architecting a smart city, the designers and architects need to incorporate efficient mechanisms to manage movement of people, especially in urban areas. Such mechanisms usually depend heavily on the availability of efficient information and communication technologies. This paper proposes a Cloud-based cognitive radio adhoc vehicular network (CRAVENET), which plays a significant role in facilitating the development and implementation of various services in the operation of smart cities. CRAVENET also facilitates efficiently spectrum utilization by offering opportunities for cooperation among wireless service providers. CRAVENET architecture enables information collected by individual vehicles to be shared between them so as to facilitate the offering of multiple services needed for the operation of smart cities. We validate the proposed architecture using OMNeT++ and estimate its utility for information sharing and decision making. The simulation focuses on information available and/or gathered along a road trip like road conditions, trip data, traffic and climatic conditions, the status of vehicles' health, accessible vehicle service stations, and business centers.
在构建智慧城市的过程中,设计师和建筑师需要结合有效的机制来管理人员的流动,尤其是在城市地区。这种机制通常在很大程度上取决于是否有有效的信息和通信技术。本文提出了一种基于云的认知无线自组织车辆网络(CRAVENET),它在促进智慧城市运行中各种服务的开发和实施方面发挥着重要作用。CRAVENET还通过为无线服务提供商之间的合作提供机会,促进了频谱的有效利用。CRAVENET架构使单个车辆收集的信息能够在它们之间共享,从而促进提供智慧城市运行所需的多种服务。我们使用omnet++验证了所提出的体系结构,并评估了其在信息共享和决策方面的效用。模拟的重点是公路旅行中可用和/或收集的信息,如道路状况、旅行数据、交通和气候条件、车辆健康状况、可访问的车辆服务站和商业中心。
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引用次数: 8
Hybrid Clustering and Texture Features in Segmentation of Breast Masses in Mammograms 混合聚类和纹理特征在乳腺肿块分割中的应用
M. M. Saleck, Abdelmajid El Moutaouakkil, Mohamed Rmili
Image segmentation plays a key role in many medical imaging applications, especially in Computer-Aided Detection (CAD) system for mammography. A good segmentation allows increasing the performance and efficiency of CAD system that enables the radiologist to conduct a clear diagnostic analysis and to make better decisions; this requires effective tools and techniques. This paper proposes a new method to extract the mass from the Region of Interest (ROI) based on texture features and Fuzzy C-Means (FCM) clustering with setting c= 2, whereas the user selects the region of interest manually. The process of clustering is applying within an appropriate range limited by the maximum of intensity and a threshold defined by the big changes in the texture features levels. The proposed method is applied to Mini-MIAS database and then its performance is compared with some explored methods. In this study, the result of overlap measure (AOM) was achieved approximately 81%.
图像分割在许多医学成像应用中起着关键作用,特别是在乳腺x线摄影的计算机辅助检测(CAD)系统中。良好的分割可以提高CAD系统的性能和效率,使放射科医生能够进行清晰的诊断分析并做出更好的决策;这需要有效的工具和技术。本文提出了一种基于纹理特征和模糊c均值(FCM)聚类的方法,在c= 2的条件下,用户手动选择感兴趣区域,从感兴趣区域(ROI)中提取质量。聚类的过程是在一个适当的范围内应用,这个范围是由强度的最大值和纹理特征水平的大变化所定义的阈值所限制的。将该方法应用于Mini-MIAS数据库,并与已有方法进行了性能比较。在本研究中,重叠测量(AOM)的结果达到约81%。
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引用次数: 0
Online Collaborative Approach of Interactive Antenatal Lectures for Expectant Mothers 面向准妈妈的互动式产前讲座的在线协作方法
G. Nneji, Jianhua Deng, Sarder S. Shakher, H. Monday, Basil C. Mbonu, Mercy C. Nneji
Antenatal classes are sometimes called parentcraft which help to prepare expectant mothers for their baby's birth, feeding the baby and to look after the baby. It is the best way to ensure expectant mothers stay healthy during pregnancy as well as to deliver confidence and information. This paper looks into the current state of antenatal education. It investigates the way antenatal classes are accessed by expectant mothers, the challenges they face in getting access to these classes and their attitudes towards these classes. For most women, it could be stressful and very inconvenient to attend physical antenatal classes. An online collaborative approach of interactive antenatal lecture for expectant mothers is proposed to replace these classes by providing live streaming lectures, discussion and interactive sessions between users. In order to accomplish this task, some face-to-face interviews were conducted. Questionnaires were also distributed. This paper adopted the Structured Systems Analysis and Design Method (SSADM) for the specification, development, and implementation. The web based system is implemented using PHP framework as Back-end, Front-End using HTML, CSS, JavaScript, XAMPP Server and MySQL was employed to handle the database structure. The web based system was implemented and tested using carefully thought out test cases which were successful. The proposed system offers antenatal education to expectant mothers no matter their location as well as a platform for discussion between expectant mothers, midwives, or anyone at all; sharing useful information amongst themselves and giving advice and encouragement to one another.
产前课程有时被称为育儿课程,帮助准妈妈为婴儿的出生做好准备,喂养婴儿和照顾婴儿。这是确保准妈妈在怀孕期间保持健康以及传递信心和信息的最佳方式。本文探讨了我国产前教育的现状。它调查了孕妇参加产前课程的方式,她们在参加这些课程时面临的挑战以及她们对这些课程的态度。对大多数妇女来说,参加产前物理课程可能会很有压力,也很不方便。提出了一种在线协同的孕妇产前互动讲座方式,通过提供用户间的直播讲座、讨论和互动会话来取代这些课程。为了完成这项任务,我们进行了一些面对面的访谈。还分发了调查问卷。本文采用结构化系统分析与设计方法(SSADM)进行规范、开发和实现。基于web的系统后端采用PHP框架,前端采用HTML、CSS、JavaScript,数据库结构采用XAMPP Server和MySQL处理。这个基于web的系统是用经过深思熟虑的测试用例来实现和测试的,并且是成功的。拟议的系统为孕妇提供产前教育,无论她们在哪里,以及孕妇、助产士或任何人之间讨论的平台;他们之间分享有用的信息,互相建议和鼓励。
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引用次数: 0
Adaptive Image Edge Detection Model Using Improved Canny Algorithm 基于改进Canny算法的自适应图像边缘检测模型
Jun Kong, Jian Hou, Tianshan Liu, Min Jiang
Canny algorithm is one of the most widely used edge detection methods based on the optimal thought. However, it still has some drawbacks. In this paper on adaptive edge detection model based on improved Canny algorithm is proposed. Firstly, we replace the Gaussian smooth in standard Canny algorithm by the proposed morphology method to highlight the edge information and reduce the noise; secondly, the fractional differential theory is utilized to calculate gradient value, which further eliminate noise and enhance image details; next, we propose an interpolation method for non-maximum suppression, leading to a more accurate edge location; finally, a method based on Otsu's threshold method is proposed to get adaptive threshold. Compared with Canny algorithm and other existing methods, the proposed method has better detection accuracy and robustness.
Canny算法是目前应用最广泛的一种基于最优思想的边缘检测方法。然而,它仍然有一些缺点。提出了一种基于改进Canny算法的自适应边缘检测模型。首先,用本文提出的形态学方法代替标准Canny算法中的高斯平滑,突出边缘信息,降低噪声;其次,利用分数阶微分理论计算梯度值,进一步消除噪声,增强图像细节;接下来,我们提出了一种非极大值抑制的插值方法,从而获得更精确的边缘定位;最后,提出了一种基于Otsu阈值法的自适应阈值提取方法。与Canny算法等现有方法相比,该方法具有更好的检测精度和鲁棒性。
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引用次数: 1
Use of Logical Puzzles to Promote Techeracy for Non-Science/Engineering Students 运用逻辑谜题提高非理工科学生的技术能力
B. Parhami
Literacy and numeracy, introduced long ago to define the skill sets of a competent workforce, are no longer adequate for the 21st century. We need what is described by “techeracy,” which is loosely equivalent to “grasp of technology.” Just as numeracy is fundamentally different from literacy, there are key differences between the scopes and requirements of techeracy and numeracy. Achieving techeracy requires a further shift away from story-telling and word problems, used to instill literacy and numeracy, toward logical reasoning, as reflected in the activity of solving puzzles. I draw upon my experience with teaching a freshman seminar to non-science/engineering majors to convey how a diverse group of learners can be brought to understand the underpinnings of complex technical concepts. Once the basics are imparted in this manner, learners become empowered to pursue additional science and technology topics through suitably designed self-contained study modules.
识字和计算能力,很久以前就被引入来定义有能力的劳动力的技能组合,不再适合21世纪。我们需要被称为“技术”的东西,它大致等同于“掌握技术”。正如计算能力与读写能力有着根本的区别一样,技术能力和计算能力的范围和要求也有关键的区别。实现教学能力需要进一步从用于灌输识字和计算能力的讲故事和文字问题转向逻辑推理,这反映在解决谜题的活动中。我利用我给非科学/工程专业的大一新生教授研讨会的经验来传达如何让不同的学习者群体理解复杂技术概念的基础。一旦以这种方式传授基础知识,学习者就可以通过适当设计的自包含学习模块来追求额外的科学和技术主题。
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引用次数: 1
Smart Garbage Monitoring Using IoT 使用物联网的智能垃圾监控
Souptik Paul, Sayan Banerjee, Srutayu Biswas
In recent times, cleanliness has become an important factor for human health. One major aspect of cleanliness is the efficient disposal of wastes. Accumulation of waste products for prolonged periods of time can lead to the spreading of various diseases. Therefore, countries around the world are taking attempts to ensure proper handling of waste products. The system we built will apprise individuals or organisations about the amount of waste in their bins and also alert them when the bin is filled to the brim. Our system also analyses the waste products to ensure the proper segregation of the wastes into biodegradable, non-biodegradable and recyclable wastes. The system also recognizes objectionable materials in the bin, using Computer Vision API and sends an alert as and when they are disposed. This system will thus help promoting cleanliness in the country. By utilising this system, people need not check their bins on a regular basis as they will be notified when required.
近年来,清洁已成为人类健康的重要因素。清洁的一个主要方面是有效地处理废物。废物长时间的积累可导致各种疾病的传播。因此,世界各国都在努力确保妥善处理废物。我们建立的系统将通知个人或组织他们的垃圾箱里的垃圾数量,并在垃圾箱装满时提醒他们。我们的系统亦会分析废物,以确保废物分为可生物降解废物、不可生物降解废物和可循环再造废物。该系统还使用计算机视觉API识别垃圾箱中的垃圾,并在垃圾被处理时发出警报。因此,该系统将有助于促进该国的清洁。有了这个系统,人们就不需要定期检查他们的垃圾桶,因为他们会在需要的时候得到通知。
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引用次数: 14
A CNTFET based Multi-Stage Transimpedance Amplifier for Blood Glucose Monitoring Systems 一种基于CNTFET的血糖监测系统多级跨阻抗放大器
Kavyashree Puttananjegowda, Sylvia W. Thomas
In this paper, the design of an ultra-low-power, low noise carbon nanotube field effect transistor (CNTFET) based transimpedance amplifier (TIA) is presented for an amperiometric based blood glucose monitoring system for wearable devices. The proposed cascode common source multistage transimpedance amplifier circuit is designed and implemented in CNTFET technology. It has been demonstrated that the performance of the proposed TIA can be enhanced by considering an optimum number of CNTs, the CNT pitch and CNT diameter. The TIA shows a significant increase in transimpedance gain, 572 MΩ, with a bandwidth of 200 MHz and an input referred current noise of 8.3 fA/⇃Hz for an input current of 2 nA. The total power consumption is 11 pW with a 1.8 V supply.
本文设计了一种超低功耗、低噪声的基于碳纳米管场效应晶体管(CNTFET)的跨阻抗放大器(TIA),用于可穿戴设备的电流测量血糖监测系统。采用CNTFET技术设计并实现了级联码共源多级跨阻放大电路。研究表明,通过考虑碳纳米管的最佳数量、碳纳米管间距和碳纳米管直径,可以提高所提出的TIA的性能。TIA显着增加了跨阻增益572 MΩ,带宽为200 MHz,输入参考电流噪声为8.3 fA/⇃Hz,输入电流为2 nA。总功耗为11pw,电源为1.8 V。
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引用次数: 6
期刊
2018 IEEE 9th Annual Information Technology, Electronics and Mobile Communication Conference (IEMCON)
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