iosr-JECE   Volume-16 ~ Issue-4 ~ Jul.-Aug. 2021

Abstract: Wide regions around the world specially remote and rural areas suffer from the absence of voice and data services provided by operating service providers in the country or may suffer from weak network coverage due to the small amount or the absence of built infrastructure in these areas, here comes the role of satellite communication systems as a solution for this problem due to their great abilities such as a wide reception range which means the possibility of building networks in almost any place on earth. The purpose of this article is to study VSAT technology and Mobile Satellite Services as satellite based services and comparing their capabilities from different aspects in providing communication services for people in these regions.

Keywords: VSAT, Mobile Satellite Services, VSAT Architecture, MSS systems, Propagation Conditions, Frequency Bands, Antenna Diameter

[1]. Nandi, S., et al., "Computing for rural empowerment: enabled by last-mile telecommunications" , IEEE Communications Magazine, 2016, 54(6): p. 102-109.
[2]. K. Ch. Sri Kavya, S.K.K., G R R N Vardhani, "Rural Tele-Communication Using VSAT Technology: A Review", International Journal of Pure and Applied Mathematics, 2017. 117(18): p. 155-162.
[3]. Bousquet, G.M.M., Satellite Communications Systems, Wiley, 2009.
[4]. Wilk-Jakubowski, J., ''A review on information systems engineering using vsat networks and their development directions'', Yugoslav Journal of Operations Research, 2020(00): p. 15-15.
[5]. Thakur, D. ''What is VSAT'', Computer Networking notes,Services and Applications [cited 2020 23/10]; Available from: https://ecomputernotes.com/computernetworkingnotes/services-and-applications/vsat..

Abstract:Background: This work elucidates the simple design method of a low cost multi-scale digital thermometer based on PIC16F77A Microcontroller and temperature sensor LM35. LM35 is an analog sensor that converts the surrounding temperature to a proportional analog voltage. The sensor's output is connected to one of the Analog to Digital Converter (ADC) channel inputs of the Microcontroller to originate the equivalent temperature value in digital format. Ten digital values of temperature are stored and computed within a short duration to have maximum, minimum and average temperatures. Thereafter, the calculated forms of temperature are displayed in a 16×4 character LCD in four different scales correspondingly. Results: This design process is more convenient than others as it is more economical, efficient and straightforward......

Keywords: Microcontroller, Sensor, LCD, Circuit board, Construction and Calibration

[1]. Wikipedia. Thermometer. Retrieved December 7, 2011, Wikipedia the free encyclopedia.
[2]. Bellis, M. The history of thermometer, The New York Times Company: About.com.Inventors. Retrieved November 4, 2011
[3]. Halden, A. V. The Thermometer. The Gallileo Project. Retrieved January 15, 2011
[4]. Sigurssen, A. History of the thermometer.Newsfinder.com, 2003, Retrieved November 28, 2011
[5]. Bogdan L. and Cristina B."The Design of Temperature Control System using PIC18F4620" ISIC, Singapore, 2010, Pp 389-394.

Abstract: For industrial applications such as boilers in nuclear power plants, textile dying machines, etc., water level control is highly important. In this work, a fuzzy logic based simple water level indicator and controller was designed and implemented. For simplicity, the fabricated electronic level indicator defines only two (2) levels; minimum and maximum through use of Light Emitting Diodes (LEDs). The fuzzy logic controller (FLC) was based on Mamdani type Fuzzy Inference System which has two inputs; error in level and rate of change of error with one output; valve position. The fuzzy controller was implemented in MATLAB and then simulated in Simulink to test the behaviour of the.....

Keywords: Fuzzy logic controller, level control, Mamdani, PID controller, Simulink

[1]. Alshalaa, A. S., & Issmail, M. E. (2013). Comparison of Mamdani and Sugeno Fuzzy Interference Systems for the Breast Cancer Risk. International Journal of Computer and Information Engineering, 7(10), 1343-1347.
[2]. Anyanwu, C. N., Mbajiorgu, C. C., & Anoliefo, E. C. (2012, March). Design and Implementation of a Water Level Controller. Nigerian Journal of Technology (NIJOTECH), 31(1), 89-92.
[3]. Arshdeep, K., & Amrit, K. (2012, May). Comparison of Mamdani-Type and Sugeno-Type Fuzzy Inference Systems for Air Conditioning System. International Journal of Soft Computing and Engineering (IJSCE), 2(2), 323-324.
[4]. Daniel, W., Fakhreddine, K., & Insop, S. (2005). Water Level Control by Fuzzy Logic and Neural Networks. IEEE Conference on Control Applications.
[5]. Davood, M. S., Seyed, H. A., & Faridoon, S. (2013, January). Comparative Study between Tank's Water Level Control Using PID and Fuzzy Logic Controller. Advances in Intelligent Systems and Computing (AISC), 195, 141–153. doi:10.1007/978-3-642-33941-7-15

Abstract: The demand for high data rate in modern day wireless communication is on the increase and requires a miniature device. Ultra wide band is one of the techniques for high frequency band. Microstrip patch antenna has gain popularity in the design of UWB. In this study, a coaxial fed Planar inverted –F Antenna with one slot for Ultra wide band resonating at 10.8GHz was designed with a reduced height and with a better performance of antenna parameters. The High Frequency Software Structure (HFSS) was used. The substrate used is FR4 with dimensions 62.5mm x56mm having a height of 0.8mm dielectric constant of 2.2. A patch with dimension of length 23.5mm and width 15mm was considered. The result shows antenna operating on an UWB frequency range of 8.5GHz to 10.8GHz having a return loss less than -10dB, directivity.........

Keywords: Ultra wide band, Planar Inverted –F Antenna(PIFA),Substrate

[1]. [1]. Amit,A.D&Ray,K.P.(2014). MultibandRectangular Microstrip Antenna.IETE Journal of Research,(Vol.57). Pp437-442.
[2]. Anoop, V.&Kazi,A. (2015).Design of PIFA antenna With Slot on Ground to Improve Bandwidth.International Journal on Innovative Research and Communication Engineering, (Vol.3). Issue Pp. 28295-2900.
[3]. Asad. A.Ayman,S.Al-Zayed,Mekad,B.(2014).Low Pass filter design Based on Microstrip Meander Line with HDGS. Applied Computational Electromagnetics SocietyJournal (Vol.29). Pp.6.
[4]. Ashutosh. J. Bhawana, J, Chitranshu, A. Anup, K. Anand, S. (2014). Design and Simulation of a Probe fed Planar Inverted –F Antenna(PIFA) For ISM Band Applications Using High Frequency Software Structure(HFSS)" International Journal of Scientific and Engineering Research(IJSER)(Vol.4 ) 5. Pp.10
[5]. Balanis, A.C. (2005). Antenna Theory Analysis and Design, Revised Third Edition John Wiley and Sons.Pp. 36-876

Abstract: Automation is the creation and application of technologies to produce and deliver goods and services with minimal human intervention. The implementation of automation technologies, techniques and processes improve the efficiency, reliability and/ or speed of many tasks that were previously performed by humans.......

Key Word: Neural network, latency reduction, efficiency increment, optimization, fuzzy logic algorithms

[1]. Ackerman, J., & Seipel, J. (2013), 'Energy Efficiency of Legged Robot Locomotion with Elastically Suspended Loads', IEEE Transactions on Robotics, Vol. 29, No. 2, pp. 321-330.
[2]. Agheli, M., Qu, L., & Nestinger, S. S. (2014), 'SHeRo: Scalable Hexapod Robot for Maintenance, Repair, and Operations', Robotics and Computer - Integrated Manufacturing, Vol. 30, No. 5, pp. 478-488.
[3]. Almeida, A., Barreto, A., Dias, J., Menezes, P., & Trigo, A. (2018), 'Kinematic and Dynamic Modeling of a Six - Legged Robot', Global Journal of Engineering, Science and Social Science Studies, Vol. 3, No. 1, pp. 1-10.
[4]. Barai, R. K., & Nonami, K. (2007), 'Optimal two-degree-of-freedom Fuzzy Control for Locomotion Control of a Hydraulically Actuated Hexapod Robot', Information Sciences', Vol. 177, No. 8, pp. 1892-1915.
[5]. Beer, R. D., Chiel, H. J., Quinn, R. D., Espenschied, K. S., & Larsson, P. (1992), 'A Distributed Neural Network Architecture for Hexapod Robot Locomotion', Neural Computation, Vol. 4, No. 3, pp. 356-365

Abstract: We introduce the economy of things and discuss the state of big data given the economy of things. We explain our disappointment in digitalization and present our reasons. Despite the championing of big data by the white literature, the refereed literature is still discontent of data science and big data analytics. In an effort to advance the big data technology in an economy of things, we propose a value-based taxonomy of big data and propose a framework to integrate big data engineering, data science, and decision engineering. We also debate current big data analytics problems and claim that the big data V's are at the origin of these problems and we propose anti-V's to remedy for added complications. In this taxonomy, big data continues......

Key Word: Big data, Economy of Things, Internet of Tings, Digitization, Digitalization, Decision engineering, Big data engineering, Datafication, Grey data, Dark data, Dark hole.

[1] V. Parida, Sjödin and W. ReimReviewing, "Literature on Digitalization, Business Model Innovation, and Sustainable Industry: Past Achievements and Future Promises," Sustainability, vol. 11, no. 391, p. 1., 2019.
[2] M.J. Davenport, and S. Kudyba, "Designing and dveloping analytics-based data products," MIT Sloan Management Review, vol. 58, no.1, 82-89, 2016.
[3] E. Brynjolfsson, and A., McAfee, "The Digitization of Just About Everything, Case Study," Harvard Business Review, https://hbr.org/product/the-digitization-of-just-about-everything/ROT275-PDF-ENG, 2015.
[4] D. Icholas and N.D. Evans, "Managing Innovation & Disruptive Technology," CIO, OCTOBER 01, 2015., https://www.cio.com/article/2988012/6-steps-for-digital-transformation.html
[5] B.G. Raggad, Information Security Management: Concepts and Practice, CRC Press, New York, 2010.