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IEEE Wireless Africa Conference

召开年：2019
召开地：Pretoria(ZA)
出版时间：-

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1.Mitigating Interference in the Resource Optimisation for Heterogeneous Cognitive Radio Networks

机译：缓解异构认知无线电网络资源优化中的干扰
- 作者：B. S. Awoyemi;B. T. Maharaj
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Interference;
- Productivity;
- Optimization;
- Limiting;
- Modulation;
- Cognitive radio;
2.Performance Analysis of Dual 5 GHz WiFi and UHF TV White Space Network Links

机译：双5 GHz WiFi和UHF电视空白空间网络链路的性能分析
- 作者：Mokwape M. Lamola;David L. Johnson;Albert A. Lysko;Melissa Densmore;Richard Maliwatu
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Wireless fidelity;
- Throughput;
- TV;
- Meters;
- IEEE 802.11 Standard;
- Sports;
- UHF measurements;
3.A Preliminary Model for Estimating the Economic Impact of Broadband Connectivity in African High School Education Based on Large TVWS Trials

机译：基于大型TVWS试用的非洲高中教育中宽带连接的经济影响估算的初步模型
- 作者：Albert A. Lysko;Jean-Paul Van Belle;Adheesh Budree
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Internet;
- TV;
- Economics;
- Education;
- Investment;
- Europe;
- Sociology;
4.Efficient Resource Allocation in Water Quality Sensor Networks

机译：水质传感器网络中的有效资源分配
- 作者：Segun O. Olatinwo;Trudi-H. Joubert
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Wireless sensor networks;
- Water pollution;
- Resource management;
- Radio frequency;
- Optimization;
- Energy consumption;
- Monitoring;
5.A Unified Error Analysis of Uncoded Space-Time Labeling Diversity with Three Transmit Antennas in Rician Fading Channels

机译：Rician衰落信道中具有三个发射天线的未编码时空标记分集的统一误差分析
- 作者：Dauda Ayanda;Hongjun Xu
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Rician channels;
- Diversity reception;
- Bit error rate;
- Signal to noise ratio;
- Rayleigh channels;
- Correlation;
6.Wireless SMART Product Tracking using Radio Frequency Identification

机译：使用射频识别的无线SMART产品跟踪
- 作者：Naeem Jardine;Gareth A. Gericke;Rangith R. Kuriakose;Hermanus J. Vermaak
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Databases;
- Monitoring;
- Smart manufacturing;
- Production facilities;
- RFID tags;
7.Industry / Technical Sponsor

机译：行业/技术赞助商
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
8.A Generalized Marcum Q-Function for Fading Conditions

机译：衰落条件下的广义Marcum Q函数
- 作者：K. Dhuness;J. Jideani;C. Bhikha
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- OFDM;
- Modulation;
- Closed-form solutions;
- Weibull fading channels;
- Standards;
- Digital video broadcasting;
9.QoE-Driven Resource Allocation for SUs with Heterogeneous Traffic using Deep Reinforcement Learning

机译：使用深度强化学习的异构流量SU的QoE驱动资源分配
- 作者：M. C. Hlophe;B. T. Maharaj
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Quality of experience;
- Quality of service;
- Interference;
- Resource management;
- Measurement;
- Signal to noise ratio;
- Reinforcement learning;
10.Human Activity Recognition using Visual Object Detection

机译：使用视觉对象检测的人类活动识别
- 作者：Schalk Wilhelm Pienaar;Reza Malekian
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Object detection;
- Training;
- Activity recognition;
- Machine learning algorithms;
- Data integration;
- Visualization;
- Monitoring;
11.Multi-Paradigm Computing Architecture for Power Efficient Intent Based Networks

机译：基于高效意图的网络的多天堂计算架构
- 作者：A. A. Periola;A. A. Alonge;K. A. Ogudo
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Cloud computing;
- Computer architecture;
- Hardware;
- Neuromorphic engineering;
- Deep learning;
- Big Data;
12.Revolving Codes: High Performance and Low Overhead Network Coding

机译：旋转代码：高性能和低开销的网络编码
- 作者：Niloofar Yazdani;Daniel E. Lucani
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Decoding;
- Encoding;
- Receivers;
- Network coding;
- Payloads;
- Simulation;
- Industries;
13.Fog Computing Architecture for 5G-Compliant IoT Applications in Underserved Communities

机译：服务不足社区中用于5G兼容IoT应用的雾计算架构
- 作者：Nosipho Khumalo;Olutayo Oyerinde;Luzango Mfupe
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Computer architecture;
- Edge computing;
- 5G mobile communication;
- Cloud computing;
- Computational modeling;
- Internet of Things;
- Sensors;
14.Performance Analysis of Cooperative NOMA with Partial Relay Selection under Outdated Channel Estimate

机译：过时信道估计下具有部分中继选择的合作式NOMA性能分析
- 作者：Kehinde O. Odeyemi;Pius A. Owolawi
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Relays;
- NOMA;
- Fading channels;
- Power system reliability;
- Probability;
- Signal to noise ratio;
- Performance analysis;
15.Poor Data Throughput Root Cause Analysis in Mobile Networks using Deep Neural Network

机译：使用深度神经网络的移动网络中不良数据吞吐量根本原因分析
- 作者：Maluambanzila Minerve Mampaka;Mbuyu Sumbwanyambe
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Deep learning;
- Throughput;
- Quality of experience;
- Neural networks;
- Training;
- Downlink;
- Data models;
16.Ellipsoidal Fuzzy Analysis of Path Attenuation in a Multi-Urban Environment

机译：多城市环境下路径衰减的椭球模糊分析
- 作者：Oluwagbemiga Omotayo Shoewu;Lateef Adesola Akinyemi;Lawrence Oborkhale
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Fuzzy logic;
- Urban areas;
- Base stations;
- Receiving antennas;
- Antenna measurements;
- Transmitting antennas;
- Computational modeling;
17.Improving Error Probability Performance of Digital Communication Systems with Compact Nyquist Pulses

机译：利用紧凑型奈奎斯特脉冲改善数字通信系统的错误概率性能
- 作者：Uche A. K. Chude-Okonkwo;B. T. Maharaj;Reza Malekian
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Bandwidth;
- Error probability;
- Timing;
- Timing jitter;
- Time-domain analysis;
- Time-frequency analysis;
- Transceivers;
18.Welcome from the IEEE VTS President

机译：IEEE VTS总裁致欢迎词
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
19.A Survey on Information and Communications Technology Infrastructure for Smart Grids

机译：智能电网信息通信技术基础设施调查
- 作者：Daisy Nkele Molokomme;Chabalala S. Chabalala;Pitshou Bokoro
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Information and communication technology;
- Power systems;
- Aging;
- Industries;
- Next generation networking;
- Energy resolution;
20.Comparison of the Modelled Maximum Wireless Link Distance for TVWS and Wi-Fi within South African Regulatory Constraints: Which Technology Wins and in Which Scenarios?

机译：南非监管限制内TVWS和Wi-Fi的模型化最大无线链路距离的比较：哪种技术胜出，在哪种情况下？
- 作者：Albert A. Lysko;Chris R. Burger;Albert A. Lysko;Ellie Hagopian
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- TV;
- Wireless fidelity;
- Antennas;
- Attenuation;
- Gain;
- Base stations;
- Sociology;
21.Behaviour of Lognormally-Distributed Differential Functions of Rain Drop Profiles over Radio Links

机译：无线链路上雨滴剖面的对数正态分布微分函数的行为
- 作者：Akintunde Alonge
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Rain;
- Attenuation;
- Wireless communication;
- Mathematical model;
- Size measurement;
- Instruments;
22.Review of Interference Mitigation Techniques for White Space Networks

机译：白色空间网络的干扰缓解技术综述
- 作者：Elesa Ntuli;Chunling Du;Fisseha Mekuria
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Software radio;
- Interference;
- Modulation;
- Spatial databases;
- Erbium;
23.Influence of Sub-Processes Timescale Differences on Molecular Communication Systems Performance

机译：子过程时标差异对分子通信系统性能的影响
- 作者：Uche A. K. Chude-Okonkwo;B. T. Maharaj;Reza Malekian
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Receivers;
- Substrates;
- Stochastic processes;
- Biochemistry;
- Nanobioscience;
- Biological system modeling;
- Kinetic theory;
24.Comparative Study of Overloaded and Underloaded NOMA Schemes with Two Multiuser Detectors

机译：具有两个多用户检测器的过载和过载NOMA方案的比较研究
- 作者：Olutayo Oyeyemi Oyerinde
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- NOMA;
- Interference;
- Detectors;
- Multiuser detection;
- Signal to noise ratio;
- Receivers;
- Multiplexing;
25.Improved Iterative Convergence Rate for Soft-Decision Bit-Level Reed-Solomon Decoders using Information Set Decoding

机译：使用信息集解码的软判决比特级里德-所罗门解码器的改进迭代收敛速率
- 作者：Yuval Genga;Olutayo Oyerinde;Jaco Versfeld
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Iterative decoding;
- Decoding;
- Reliability;
- Convergence;
- Iterative algorithms;
- Computational complexity;
- Reed-Solomon codes;
26.Overview of 9 Open-Source Resource Orchestrating ETSI MANO Compliant Implementations: A Brief Survey

机译：ETSI MANO兼容实现的9种开源资源编排概述：简要调查
- 作者：Lusani Mamushiane;Albert A. Lysko;Tariro Mukute;Joyce Mwangama;Zaaid Du Toit
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Cloud computing;
- Network function virtualization;
- Open source software;
- Business;
- Computer architecture;
- Computational modeling;
27.Human Activity Recognition using LSTM-RNN Deep Neural Network Architecture

机译：使用LSTM-RNN深层神经网络架构的人类活动识别
- 作者：Schalk Wilhelm Pienaar;Reza Malekian
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Economic indicators;
28.IoT in Agriculture: Enhanced Throughput in South African Farming Applications

机译：物联网在农业中的应用：提高南非农业应用的吞吐量
- 作者：Elizabeth Botha;Reza Malekian;Owoicho E. Ijiga
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Pipelines;
- Temperature measurement;
- Temperature sensors;
- Production;
- Sensor systems;
- Monitoring;
29.Demonstrating the Advantages of Wideband Piezocomposite Transducers with a High-Resolution Multi-Receiver Synthetic Aperture Sonar Demonstrator

机译：展示具有高分辨率多接收器合成孔径声纳演示器的宽带压电复合换能器的优势
- 作者：Josiah C. Jideani;Kyriacos Nicolaides
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Synthetic aperture sonar;
- Transducers;
- Image resolution;
- Wideband;
- Imaging;
30.Industry / Technical Sponsor

机译：行业/技术赞助商
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
31.Welcome from the IEEE VTS President

机译：欢迎来自IEEE VTS总裁
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
32.A Generalized Marcum Q-Function for Fading Conditions

机译：用于衰落条件的广义Marcum Q函数
- 作者：K. Dhuness;J. Jideani;C. Bhikha
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- OFDM;
- Modulation;
- Closed-form solutions;
- Weibull fading channels;
- Standards;
- Digital video broadcasting;
33.Efficient Resource Allocation in Water Quality Sensor Networks

机译：水质传感器网络中有效的资源分配
- 作者：Segun O. Olatinwo;Trudi-H. Joubert
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Wireless sensor networks;
- Water pollution;
- Resource management;
- Radio frequency;
- Optimization;
- Energy consumption;
- Monitoring;
34.Human Activity Recognition using Visual Object Detection

机译：使用视觉对象检测的人类活动识别
- 作者：Schalk Wilhelm Pienaar;Reza Malekian
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Object detection;
- Training;
- Activity recognition;
- Machine learning algorithms;
- Data integration;
- Visualization;
- Monitoring;
35.Improved Iterative Convergence Rate for Soft-Decision Bit-Level Reed-Solomon Decoders using Information Set Decoding

机译：使用信息集解码改善软决策比特级Reed-Solomon解码器的迭代收敛速率
- 作者：Yuval Genga;Olutayo Oyerinde;Jaco Versfeld
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Iterative decoding;
- Decoding;
- Reliability;
- Convergence;
- Iterative algorithms;
- Computational complexity;
- Reed-Solomon codes;
36.IoT in Agriculture: Enhanced Throughput in South African Farming Applications

机译：农业内部：提高南非农业应用的吞吐量
- 作者：Elizabeth Botha;Reza Malekian;Owoicho E. Ijiga
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Pipelines;
- Temperature measurement;
- Temperature sensors;
- Production;
- Sensor systems;
- Monitoring;
37.Human Activity Recognition using LSTM-RNN Deep Neural Network Architecture

机译：使用LSTM-RNN深神经网络架构的人类活动识别
- 作者：Schalk Wilhelm Pienaar;Reza Malekian
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Economic indicators;
38.Behaviour of Lognormally-Distributed Differential Functions of Rain Drop Profiles over Radio Links

机译：无线电链路雨下落简档的逻辑分布差分函数的行为
- 作者：Akintunde Alonge
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Rain;
- Attenuation;
- Wireless communication;
- Mathematical model;
- Size measurement;
- Instruments;
39.Performance Analysis of Cooperative NOMA with Partial Relay Selection under Outdated Channel Estimate

机译：过时渠道估计下局部继电器选择合作NOMA的性能分析
- 作者：Kehinde O. Odeyemi;Pius A. Owolawi
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Relays;
- NOMA;
- Fading channels;
- Power system reliability;
- Probability;
- Signal to noise ratio;
- Performance analysis;
40.Comparative Study of Overloaded and Underloaded NOMA Schemes with Two Multiuser Detectors

机译：两种多用户探测器的过载和欠载没有载荷的比较研究
- 作者：Olutayo Oyeyemi Oyerinde
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- NOMA;
- Interference;
- Detectors;
- Multiuser detection;
- Signal to noise ratio;
- Receivers;
- Multiplexing;
41.Comparison of the Modelled Maximum Wireless Link Distance for TVWS and Wi-Fi within South African Regulatory Constraints: Which Technology Wins and in Which Scenarios?

机译：南非监管制约因素中的TVWS和Wi-Fi建模的最大无线链路距离的比较：哪种技术获胜，在哪种情况下？
- 作者：Chris R. Burger;Albert A. Lysko;Ellie Hagopian
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- TV;
- Wireless fidelity;
- Antennas;
- Attenuation;
- Gain;
- Base stations;
- Sociology;
42.Demonstrating the Advantages of Wideband Piezocomposite Transducers with a High-Resolution Multi-Receiver Synthetic Aperture Sonar Demonstrator

机译：用高分辨率多接收器合成孔径声明演示展示宽带压电复合换能器的优势
- 作者：Josiah C. Jideani;Kyriacos Nicolaides
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Synthetic aperture sonar;
- Transducers;
- Image resolution;
- Wideband;
- Imaging;
43.Revolving Codes: High Performance and Low Overhead Network Coding

机译：旋转代码：高性能和低开销网络编码
- 作者：Niloofar Yazdani;Daniel E. Lucani
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Decoding;
- Encoding;
- Receivers;
- Network coding;
- Payloads;
- Simulation;
- Industries;
44.QoE-Driven Resource Allocation for SUs with Heterogeneous Traffic using Deep Reinforcement Learning

机译：利用深度加强学习，QoE驱动的资源分配SUS与异构交通
- 作者：M. C. Hlophe;B. T. Maharaj
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Quality of experience;
- Quality of service;
- Interference;
- Resource management;
- Measurement;
- Signal to noise ratio;
- Reinforcement learning;
45.Ellipsoidal Fuzzy Analysis of Path Attenuation in a Multi-Urban Environment

机译：多城市环境中路径衰减椭将模糊分析
- 作者：Oluwagbemiga Omotayo Shoewu;Lateef Adesola Akinyemi;Lawrence Oborkhale
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Fuzzy logic;
- Urban areas;
- Base stations;
- Receiving antennas;
- Antenna measurements;
- Transmitting antennas;
- Computational modeling;
46.Fog Computing Architecture for 5G-Compliant IoT Applications in Underserved Communities

机译：雾化计算架构，在不可提供的社区中的5G标准的IOT应用程序
- 作者：Nosipho Khumalo;Olutayo Oyerinde;Luzango Mfupe
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Computer architecture;
- Edge computing;
- 5G mobile communication;
- Cloud computing;
- Computational modeling;
- Internet of Things;
- Sensors;
47.A Unified Error Analysis of Uncoded Space-Time Labeling Diversity with Three Transmit Antennas in Rician Fading Channels

机译：瑞典衰落通道中三个发射天线未编码时空标记多样性的统一误差分析
- 作者：Dauda Ayanda;Hongjun Xu
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Rician channels;
- Diversity reception;
- Bit error rate;
- Signal to noise ratio;
- Rayleigh channels;
- Correlation;
48.Performance Analysis of Dual 5 GHz WiFi and UHF TV White Space Network Links

机译：双5 GHz WiFi和UHF电视空白空间网链路性能分析
- 作者：Mokwape M. Lamola;David L. Johnson;Albert A. Lysko;Melissa Densmore;Richard Maliwatu
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Wireless fidelity;
- Throughput;
- TV;
- Meters;
- IEEE 802.11 Standard;
- Sports;
- UHF measurements;
49.Wireless SMART Product Tracking using Radio Frequency Identification

机译：无线智能产品跟踪使用射频识别
- 作者：Naeem Jardine;Gareth A. Gericke;Rangith R. Kuriakose;Hermanus J. Vermaak
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Databases;
- Monitoring;
- Smart manufacturing;
- Production facilities;
- RFID tags;
50.Improving Error Probability Performance of Digital Communication Systems with Compact Nyquist Pulses

机译：具有紧凑型奈奎斯特脉冲的数字通信系统的误差概率性能
- 作者：Uche A. K. Chude-Okonkwo;B. T. Maharaj;Reza Malekian
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Bandwidth;
- Error probability;
- Timing;
- Timing jitter;
- Time-domain analysis;
- Time-frequency analysis;
- Transceivers;
51.Mitigating Interference in the Resource Optimisation for Heterogeneous Cognitive Radio Networks

机译：减轻异构认知无线电网络资源优化的干扰
- 作者：B. S. Awoyemi;B. T. Maharaj
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Interference;
- Productivity;
- Optimization;
- Limiting;
- Modulation;
- Cognitive radio;
52.Poor Data Throughput Root Cause Analysis in Mobile Networks using Deep Neural Network

机译：使用深神经网络的移动网络数据吞吐量根本原因分析
- 作者：Maluambanzila Minerve Mampaka;Mbuyu Sumbwanyambe
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Deep learning;
- Throughput;
- Quality of experience;
- Neural networks;
- Training;
- Downlink;
- Data models;
53.Review of Interference Mitigation Techniques for White Space Networks

机译：白色空间网络干扰缓解技术综述
- 作者：Elesa Ntuli;Chunling Du;Fisseha Mekuria
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Software radio;
- Interference;
- Modulation;
- Spatial databases;
- Erbium;
54.A Survey on Information and Communications Technology Infrastructure for Smart Grids

机译：智能电网信息与通信技术基础设施调查
- 作者：Daisy Nkele Molokomme;Chabalala S. Chabalala;Pitshou Bokoro
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Information and communication technology;
- Power systems;
- Aging;
- Industries;
- Next generation networking;
- Energy resolution;
55.Influence of Sub-Processes Timescale Differences on Molecular Communication Systems Performance

机译：子过程少校差异对分子通信系统性能的影响
- 作者：Uche A. K. Chude-Okonkwo;B. T. Maharaj;Reza Malekian
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Receivers;
- Substrates;
- Stochastic processes;
- Biochemistry;
- Nanobioscience;
- Biological system modeling;
- Kinetic theory;
56.Multi-Paradigm Computing Architecture for Power Efficient Intent Based Networks

机译：基于功率高效的网络的多范式计算架构
- 作者：A. A. Periola;A. A. Alonge;K. A. Ogudo
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Cloud computing;
- Computer architecture;
- Hardware;
- Neuromorphic engineering;
- Deep learning;
- Big Data;
57.Overview of 9 Open-Source Resource Orchestrating ETSI MANO Compliant Implementations: A Brief Survey

机译：概述9个开源资源协调ETSI Mano兼容实现：简要调查
- 作者：Lusani Mamushiane;Albert A. Lysko;Tariro Mukute;Joyce Mwangama;Zaaid Du Toit
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Cloud computing;
- Network function virtualization;
- Open source software;
- Business;
- Computer architecture;
- Computational modeling;
58.A Preliminary Model for Estimating the Economic Impact of Broadband Connectivity in African High School Education Based on Large TVWS Trials

机译：基于大型TVWS试验的非洲高中教育宽带连通经济影响的初步模型
- 作者：Albert A. Lysko;Jean-Paul Van Belle;Adheesh Budree
- 会议名称：《IEEE Wireless Africa Conference》 | 2019年
- Internet;
- TV;
- Economics;
- Education;
- Investment;
- Europe;
- Sociology;