https://rajpub.com/index.php/ijct/issue/feed INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY 2020-06-01T03:01:51+00:00 Editorial Office editor@rajpub.com Open Journal Systems https://rajpub.com/index.php/ijct/article/view/8533 Model-Based Parallelization for Simulink Models on Multicore CPUs and GPUs 2020-01-15T08:52:24+00:00 Zhaoqian Zhong zhaoqian@ertl.jp Masato Edahiro zhaoqian@ertl.jp <p>In this paper we propose a model-based approach to parallelize Simulink models of image processing algorithms on homogeneous multicore CPUs and NVIDIA GPUs at the block level and generate CUDA C codes for parallel execution on the target hardware. In the proposed approach, the Simulink models are converted to directed acyclic graphs (DAGs) based on their block diagrams, wherein the nodes represent tasks of grouped blocks or subsystems in the model and the edges represent the communication behaviors between blocks. Next, a path analysis is conducted on the DAGs to extract all execution paths and calculate their respective lengths, which comprises the execution times of tasks and the communication times of edges on the path. Then, an integer linear programming (ILP) formulation is used to minimize the length of the critical path of the DAG, which represents the execution time of the Simulink model. The ILP formulation also balances workloads on each CPU core for optimized hardware utilization. We parallelized image processing models on a platform of two homogeneous CPU cores and two GPUs with our approach and observed a speedup performance between 8.78x and 15.71x.</p> 2020-01-04T00:00:00+00:00 Copyright (c) 2020 Zhaoqian Zhong, Masato Edahiro https://rajpub.com/index.php/ijct/article/view/8480 Medical Device Integration with Electronic Health Records: A Case Study of University of Nairobi Health Services, Kenya 2020-01-15T08:43:12+00:00 David Muchangi Mugo davemugo2005@gmail.com Benard Mutisya Nzyoka Nzyoka mnmutisya@gmail.com Stephen Mburu Ng’ang’a smburu@uonbi.ac.ke <p>In this study, we describe a demonstration in which available electronic medical records system (EMR) was successfully integrated with a wireless blood pressure monitor (BPM). This was implemented by adopting the use of RESTful Application Programming Interface (API) technologies and commonly established standards designed for medical devices interoperability. Before deploying the prototype, we conducted pilot tests at the University of Nairobi, nursing station to get feedback on the time spent using the conventional blood pressure data capture methods and the newly integrated application. Clinical data from the device was exchanged adhering to the HL7/XML standard communication protocol. The findings indicate a positive outcome was availed on the time taken for the blood pressure readings, time spent by the patient at the nursing station, doctor’s time to search the patients’ blood pressure readings as well as the data accuracy fed in the EMR system.</p> <p>&nbsp;</p> 2020-01-06T00:00:00+00:00 Copyright (c) 2020 David Muchangi Mugo, Benard Mutisya Nzyoka Nzyoka, Stephen Mburu Ng’ang’a https://rajpub.com/index.php/ijct/article/view/8563 Twitter Privacy Concern: The Effect of Twitter Profile 2020-01-15T08:43:14+00:00 Jehad Al Amri j.alamri@tu.edu.sa <p>Privacy concern vary from one to another. Sensitive information related to finance and health are most of the concern. The vast spread of using social media/ micro-blogging platforms, i.e. Twitter, as a desirable channel of online communication, has changed the peoples' understanding of what is private communication and whether they should or should not be concerned about their privacy. This paper examines the relationship between the level of privacy concern of Twitter users and their gender, experience on Twitter, type of their Twitter account and type of their username. A survey in the form of a questionnaire has been conducted in Saudi Arabia. The research compares privacy concern from the perspective of male and female, old and new Twitter users, private and public account holders and nickname and real name username holders. Determining the Chi square and using T-test and ANOVA, this research shows that the individual’s privacy concerns are affected by the Twitter users’ profile; gender, number of the years on Twitter, the type of Twitter account and username.</p> 2020-01-06T00:00:00+00:00 Copyright (c) 2020 Jehad Al Amri https://rajpub.com/index.php/ijct/article/view/8636 A Comparison of two Multilingual Meeting Systems 2020-02-10T04:58:35+00:00 Milam Aiken maiken@bus.olemiss.edu Mina Park parkm2@southernct.edu <p>Multilingual meeting software is still somewhat rare, but at least three systems can provide support to large groups in multiple languages. This paper compares two (Microsoft Live Translator and an academic system called Polyglot). Results show there were no significant differences between the two in terms of perceived translation accuracy, usefulness, ease of use, and design quality. However, Polyglot provides support for more languages (103 versus 66). These and other results are discussed along with directions for future research.</p> 2020-02-07T00:00:00+00:00 Copyright (c) 2020 Milam Aiken, Mina Park https://rajpub.com/index.php/ijct/article/view/8713 Designing remote education in a VUCA world 2020-05-01T17:34:44+00:00 Anand Pultoo a.pultoo@umail.mie.ac.mu Avinash OOJORAH aoojorah@mie.ac.mu <p>The goal of this article is to identify and share the best practices and innovations to enable teaching and learning to take place during times of VUCA (Volatile, Uncertain, Complex, and Ambiguous) such as the coronavirus pandemic. This will help lay the foundations for more inclusive and equitable approaches to education when the crisis subsides. The main response to school closures is to dive headlong into academic cyberspace and remote learning, creating a human-machine symbiosis. Ideally, specific contents, learning outcomes, and a set of instructions are desirable. Different media and technologies can be used to assist students to learn in different ways and achieve different outcomes, thus also individualizing learning more. Technologies can be compared along several characteristics. These characteristics form a basis for analyzing new technologies, to see where they fit within the existing environment, and to evaluate their potential benefits and limitations. Nowadays, technologies have a tendency to become more ‘communicative’ and ‘media rich’, thus offering educators and students powerful tools to attain desired learning outcomes.</p> 2020-05-11T00:00:00+00:00 Copyright (c) 2020 Anand Pultoo, Dr Avinash Oojorah https://rajpub.com/index.php/ijct/article/view/8756 Design and Implement Beacon based scheme for Node Localization in Underwater Acoustic Network 2020-05-15T07:25:28+00:00 Puneetpal Kaur infomaticmohit@gmail.com Mohit Marwaha infomaticmohit@gmail.com Baljinder Singh infomaticmohit@gmail.com <p>A network that can sense the surroundings and collected all the information from the sensor nodes and passed it to the base station is known as a wireless sensor network. The underwater acoustic networks are the type of network deployed under the oceans and passed information to the base station. Due to the dynamic nature of the network, nodes change their location at any time. To maximum aggregate information from the sensor nodes, to estimate exact node location is very important. The sensor node position estimation is a major issue of the underwater acoustic network. The process of estimating node position is called node localization. In the existing RSSI based approach for the node, localization has a high delay, which reduces its efficiency. The technique needs to be designed, which localizes more nodes in less amount of time. This research is based on the advancement of the range based scheme for node localization. In the proposed scheme, mobile beacons are responsible for node localization. The beacon nodes send beacon messages in the network, and sensor nodes respond back with a reply message. When two beacons receive the reply of a sensor node that is considered as a localized node, the sensor nodes which are already localized will not respond back to the beacon messages, which reduce delay in the network for node localization.</p> 2020-06-05T00:00:00+00:00 Copyright (c) 2020 Puneetpal Kaur, Mohit Marwaha, Baljinder Singh https://rajpub.com/index.php/ijct/article/view/8771 Dynamic Flight Routing Using Internet of Things Framework 2020-06-01T03:01:51+00:00 Amlan Chatterjee achatterjee@csudh.edu <p>With increased demand of quicker travel, both for passengers and cargo, there has been major advancements in commercial airlines and number of flights have increased significantly over the last few years. Novel challenges have been introduced due to the rising number of flights in the areas of safety, route planning and maintenance. In addition, for commercial flights, the surge in the number of passengers have also exposed avenues for improving the quality of flight travel, from entering the airport premises to leaving the same at the destination. Although there are many areas of flight and airport operations that can benefit from leveraging technological advancements, choosing safe flight path and making dynamic modifications to it is the critical aspect that needs to be addressed. Comprehending available information to adhere to the provided route and also avoiding known areas of air turbulence, adds to the financial benefit of the commercial airline as well as the safety of the airplane and the passengers are ensured. In this paper, the various aspects of improving the flight routing by providing dynamic intelligent path options to ensure adherence to the provided flight path possible is studied; options for improving the flight safety and turbulence avoidance, which benefits both the passengers and the aircraft are also explored. In addition, keeping aircraft away from conflict zones or war zones, and also from areas of natural disaster, like erupting volcanic ash or forest fires is relevant. Although these issues have been studied before, most of the techniques depend heavily on infrastructure that is on the ground. The basic model requires constant communication with an air traffic control tower, that would provide updates and changes to the flight path as necessary. This leads to some of these methods being unusable on flights operating on oceanic routes and away from the communication zone of the devices placed on land masses. Therefore, in this paper an Internet of Things based framework is proposed to address and handle the above mentioned issues. The framework is structured on the communication model of information exchange among aircraft within the range, as well as taking advantage of ground infrastructure if there is a possible network link to the same. A number of algorithms are proposed for dynamic intelligent routing of flights as well as detection and avoidance of air turbulence. The implementations of the proposed algorithms show improvements ranging from 10% to 30% in the methods as compared to using the infrastructure based conventional techniques.</p> 2020-06-22T00:00:00+00:00 Copyright (c) 2020 Amlan Chatterjee Chatterjee