Towards sustainable smart cities: A review of trends, architectures, components, and open challenges in smart cities

Internet of Things security

The surge in global population is compelling a shift toward smart agriculture practices. This coupled with the diminishing natural resources, limited availability of arable land, increase in unpredictable weather conditions makes food security a major concern for most countries. As a result, the use of Internet of Things (IoT) and data analytics (DA) are employed to enhance the operational efficiency and productivity in the agriculture sector. There is a paradigm shift from use of wireless sensor network (WSN) as a major driver of smart agriculture to the use of IoT and DA. The IoT integrates several existing technologies, such as WSN, radio frequency identification, cloud computing, middleware systems, and end-user applications. In this paper, several benefits and challenges of IoT have been identified. We present the IoT ecosystem and how the combination of IoT and DA is enabling smart agriculture. Furthermore, we provide future trends and opportunities which are categorized into technological innovations, application scenarios, business, and marketability.

An Overview of Internet of Things (IoT) and Data Analytics in Agriculture: Benefits and Challenges

Internet of Things (IoT) technology has attracted much attention in recent years for its potential to alleviate the strain on healthcare systems caused by an aging population and a rise in chronic illness. Standardization is a key issue limiting progress in this area, and thus this paper proposes a standard model for application in future IoT healthcare systems. This survey paper then presents the state-of-the-art research relating to each area of the model, evaluating their strengths, weaknesses, and overall suitability for a wearable IoT healthcare system. Challenges that healthcare IoT faces including security, privacy, wearability, and low-power operation are presented, and recommendations are made for future research directions.

Internet of Things for Smart Healthcare: Technologies, Challenges, and Opportunities

https://digitalcommons.uri.edu/cgi/viewcontent.cgi?article=1069&context=ele_facpubs

Towards fog-driven IoT eHealth: Promises and challenges of IoT in medicine and healthcare

Universities of a country perform a significant role in our society to develop every sector as well as build the backbone of a nation by providing higher, specialized and contemporary education to the young generation. At present, around 163 universities, and 31 specialized colleges exist in Bangladesh under the supervision of University Grants Commission of Bangladesh (UGC). Recently, Bangladesh government and UGC have taken the biggest challenges to ensure the quality of education to create productive graduates. But there are some common problems of fresher students in most universities such as they are not enough familiar with university education system, accommodation crises, political unrest, etc. In recent years, the rate of failure and thus re-admission is reaching alarmingly high. In this research, it has analyzed and classified the published 1st-year result data of the last 4 years (2017-2020) of the Department of Information and Communication Engineering at Pabna University of Science and Technology, Bangladesh. The analytical data critically to extract valuable information and tried to find out the reasons behind failure in the semester final examination. The classification algorithms J48 and JRIP have been used in WEKA to predict the result of a student. If someone is found not going to do well in the upcoming exam, the student can be traced and kept in special care and encouraged to reduce the rate of fail/ readmission as well as save valuable resources and accelerate the production of a more well-educated young generation.

/pdf/analysis-of-university-students-performance-using-weka-to-21vesjft.pdf

Analysis of University Students’ Performance Using WEKA to Enhance the Education Quality

Antennas are an indispensable element in wireless networks. For long-distance wireless communication, antenna gains need to be very strong (highly directive) because the signal from the antenna loses a lot of strength as it travels over long distances. This is true in the military with missile, radar, and satellite systems, etc. Antenna arrays are commonly employed to focus electromagnetic waves in a certain direction that cannot be achieved perfectly with a single-element antenna. The goal of this study is to design a rectangular microstrip high-gain 2 × 1 array antenna using ADS Momentum. This microstrip patch array design makes use of the RT-DUROID 5880 as a substrate with a dielectric constant of 2.2, substrate height of 1.588 mm, and tangent loss of 0.001. To achieve efficient gain and return loss characteristics for the proposed array antenna, RT-Duroid is a good choice of dielectric material. The designed array antenna is made up of two rectangular patches, which have a resonance frequency of 3.3 GHz. These rectangular patches are excited by microstrip feed lines with 13 mm lengths and 4.8 mm widths. The impedance of the patches is perfectly matched by these transmission lines, which helps to get better antenna characteristics. At a resonance frequency of 3.3 GHz, the suggested antenna array has a directivity of 10.50 dB and a maximum gain of 9.90 dB in the S-band. The S parameters, 3D radiation pattern, directivity, gain, and efficiency of the constructed array antenna are all available in ADS Momentum. 

/pdf/design-of-a-high-gain-2-x-1-array-antenna-for-s-band-3u6r32fj.pdf

Md. Humaun Kabir

Papers

Analysis of University Students’ Performance Using WEKA to Enhance the Education Quality

Design of a High-Gain 2 × 1 Array Antenna for S-Band Applications