Transactions on Engineering and Computer Science

This has been inspired by the current world fight with COVID-19, in an attempt to participate in it with patented and developed networking technology, also based on spreading powerful viruses in large physical and virtual spaces. The Spatial Grasp Technology (SGT) with basic Spatial Grasp Language (SGL) is using parallel self-spreading, self-replicating, and selfmatching semantic level code creating powerful distributed infrastructures for solving complex problems. This article shows how to find virus sources in distributed networks, first, by tracing them via infected predecessors if such were fixed, and then, more complexly, by moving through nodes with lower or close infection time, also taking into account possible failures in real networks. If to outline a number of infected nodes staying far away from each other and on different sides of the infected network, the probable source may also be on intersection of shortest path trees starting in them, as shown in SGL. But analyzing complexity, dynamics, and unpredictability of spread of COVID-19, we understood the insufficiency of discrete networks for simulating its world coverage. By using the SGT capability to directly operate in continuous physical spaces too, we showed how to describe the global malicious virus in a massive way, with the infection spreading via many and so far unclear channels. This article also shows how to model the planned distribution of the antivirus vaccine and its global impact on the virus, symbolically presented as spatial fight of benign (vaccine) with malicious (COVID) viruses. The latest version of SGT can be implemented and integrated with any existing networked systems in a global manner, with installment of communicating SGL interpreters in millions to billions copies and converting the world into a global simulation and control engine.

To promote teacher’s professional development, network training is proposed and served as an effective method with the help of information technology. Network training breaks through the limitation of time and space in the traditional teachers’ training mode, and facilitates carrying out the learning and communication anytime and anywhere. This article constructs the "Double Teachers Teaching" mode based on the idea of community, which defines double teachers as "Excellent Teacher" from famous school and "Local Teacher" from experimental school. The whole training process is carried out on a network platform with two core modules called “double teachers’ classroom” and “double teachers research”. Centered on Local teacher’ practical needs, high-quality condensed community learning resources are generates based on the double teachers’ cooperation and communication. The "Double Teachers Teaching" mode integrates the advantages of famous teachers and network platform, facilitate effective online training using targeted community resources. We applied the designed mode to a middle school, attach importance on the strategies of people, platform, culture and evaluation, and used questionnaire survey to investigate teachers’ competency. Results analyzed by SPSS demonstrates that this mode contributes to teachers’ development, it improves teachers’ ability of student analysis, teaching objectives, teaching process, and teaching methods.

On the basis of a theorem, in which an evanescent photon is a superluminal particle, the author considers the possibility of realizing a high-performance computer system compared with conventional silicon processors, which can perform infinite steps of computation within the finite time. This is called a hypercomputer. This critical component for hypercomputing can be created using meta-material circuits with a non-linear refractive index. Based on this optical computer system, utilizing metamaterial technology, it can be shown that superluminal computation, which is a new concept for an accelerated Turing machine, can be realized in the physical world. This system is related with the negative entropy which was introduced by Erwin Schrödinger. In this article, the author shows that negative entropy will appear in the computational steps by using superluminal particles.

Roof tile clays are the specific clay species among different clay types in Sri Lanka because of the applicability in the industry of roof tile manufacturing. The analysis of the chemical composition of the roof tile clays that available in the Dankotuwa region in Sri Lanka was the foremost objective of the existing research. There were characterized the representative clay samples using X-ray diffraction (XRD) spectrometer, X-ray fluorescence (XRF) spectrometer, and Fourier transform infrared (FT-IR) spectrophotometer. As the basic outcomes of the existing research, mainly there were found the higher Fe content with other trace elements of Zr, Ba, Ti, and K presence of kaolinite and quartz as usual in most of the clays and the presence of glauconite, muscovite and marcasite as the other minerals. The roof tile clay may be alternatively applicable in the industries of electrical, ceramic, and water treatments because of the active progress of some of composed minerals and functional groups on such applications.

This article investigated internet usage among academic staff in University of Africa, Toru-Orua, Bayelsa State, Nigeria. This research employed descriptive research method. The population of the study comprised of 100 academic staff in University of Africa out of which 75 were randomly selected. Three research questions guided the study and data were collected using structured questionnaire. It was analyzed using descriptive statistics. The findings shows that majority of the staff have access to internet services within the campus for teaching and research. It was also discovered that the use of the internet has had a positive impact on lecturer’s academic activities. On the challenges of internet usage, the findings reveal that lack of constant electricity supply, inadequate computers and slow internet speed are the major challenges militating against effective internet usage. Based on the findings of this article, the researchers wish to recommend that the school management should improve on electricity supply, provide adequate computers, and internet facilities so that academic staff can enjoy more access to the internet while they are in school and especially in the comfort of their offices.

A power system operating condition should be stable, meeting various operational criteria, and be secured in the event of any credible contingency at any time. However, in the present day, most of the power systems are being operated closer to their stability limits due to economic and environmental constraints. Consequently, the power system networks are at risk to the disturbances that lead to the major blackout or in worst case scenario may causing the grid system totally collapse. Therefore, maintaining a stable and secure operation of power system is very important and challenging issue. In the literature there are a numbers of works proposing a variety of methodologies for conducting the analysis of stability problems. In this article, the authors use the steady state and dynamic analysis for the stability problem in Sabah Grid System. Several case studies are also presented in this article to demonstrate the system stability.

This article reports on the utilization of budget split model in distributing fund to implementing agency at operation level. Budget split module is an experimental and engineering mathematical model developed to bring about fair distribution of funds to all regions. This article reports the comparative analysis of using budget split model versus empirical approach. The objective of this study is to compare the budget allocation based on empirical method against Budget Spilt Module developed into RMMS system. The finding indicates that when the budget split model is used, no region gets surplus budget. The budget is distributed such a way that all regions received reasonable amount. The Model balance the fund so that the amount available is shared based of the needs and justification of the road length. Finally, it is concluded that using Budget split model developed into system for fund distribution at operational level will create balanced economic development between regions.

Reusing asphalt pavement (RAP) has been utilized in producing new bituminous mixes for last several years and has turned into a popular topic in pavement organizations. However, worries from its behavior in the field have been still standing. The main objective of this research is investigating the long-term performance of asphalt overlays containing RAP in flexible pavement rehabilitation using data from Long Term Pavement Performance (LTPP) program. Many variables are considered such as overlay thickness (51, 127mm), asphalt overlay materials (raw mixtures compared with mixtures including 30% RAP), climate (wet, dry) and pre-overlay curing that means pavement surface handling before rehabilitation by low or heavy grinding. In this article, data from 4 sites were taken to perform analysis where each site consists of 8 sections (4 sections with raw materials and another 4 sections using 30%RAP). These sites were selected due to their similar climate to Egypt. Five performance indicators were chosen including fatigue cracking, longitudinal cracking, transverse cracking, rutting, and roughness. Two statistical analyses were performed on extracted data to determine the priority in performance and the significance in variation. The first analysis was using paired t-tests and pvalues while the second was the analysis of variance (ANOVA). The results of field observations indicated that the RAP sections achieved similar/ better performance as compared with raw sections except for rutting development which increased at using RAP. Moreover, RAP addition in thicker overlay provided lower fatigue cracking progress while thinner overlay for RAP sections provided lower longitudinal cracking development. The pre-overlay handling didn't appear any noticeable difference in fatigue, longitudinal and transverse cracking development. The climate had no obvious effect on fatigue and transverse cracking progress while dry climate provided higher longitudinal cracking and roughness progress for RAP sections. Statically, the variation in pre-overlay curing (from low to heavy) had the highest statistical effect on fatigue and transverse cracking, while rutting and roughness progresses weren't clearly affected by variation in climate, thickness or surface curing before rehabilitation. According ANOVA test, the variation in climate from wet to dry had a significant statistical effect on reducing fatigue cracking and increasing longitudinal cracking.