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Risk management in the healthcare facilities: Case study
Get PDFThe COVID-19 pandemic has affected the whole world, and we can classify it as a significant disaster in modern history. However, not only a pandemic is the unique disaster that has hit the earth. Due to the increased attention to the pandemic, spent not much attention on the other disasters. There have been forest fires in Australia, floods in Indonesia, volcano eruption in the Philippines, and others in 2020. Several disasters are causing cascading effects that may affect different sectors. Fires or floods are just one of them. The cascade effect can endanger several elements of critical infrastructure, such as the energy sector and healthcare. In healthcare facilities, patients are dependent on electricity supplies. It is therefore essential that the proper functioning of healthcare facilities is maintained. The aim of the paper is to highlight the growing trend in the number of disasters around the world and draw attention to the preparedness of healthcare facilities to solve these disasters. Based on the analysis, we can take the information that there is a big difference in the preparedness of the healthcare facilities to solve a power outage. © 2021 The Authors.Univerzita Tomáše Bati ve Zlín
Assessing the effects of ammonia (NH3) as the secondary fuel on the combustion and emission characteristics with nano-additives
Get PDFAmmonia is a promising alternative to replace the non-renewable fossil fuels. The present work offers the detailed evaluation of ammonia suitability in the diesel engine and how it is affecting the primary properties of the diesel engine. A series of tests was conducted on the test samples such as diesel, B20, B20N, B20A5 and B20A10 across various engine loading conditions. Two different ammonia energy ratios of 5 L/min and 10 L/min have been utilized. In addition to ammonia, the role of nanoparticles was analyzed and compared how far they can be competitive to the green ammonia fuel. 75 ppm of TiO2 nanoparticles was dispersed with Chlorella vul-garis microalgae biodiesel blends using ultrasonication. Ammonia was injected as the secondary fuel via air intake. Based on the results, adding ammonia in the diesel engine reduced the brake thermal efficiency of the engine. There was a drastic drop in the brake thermal efficiency that has been reported across various loads. Nevertheless, biodiesel blends with nanoparticles reported peak thermal efficiency due to the enhanced cetane number and calorific value of the fuel. On contrary, the brake specific fuel consumption of B10A and B20A was decreased compared to the other blends. As the ammonia concentration increased, both the peak cylinder pressure and heat release rates were higher. Due to the addition of ammonia, NOx emission was higher due to the higher cylinder temperature. On the other hand, the emissions of carbon dioxide, carbon monoxide and hy-drocarbons were reduced for all cases compared to neat diesel.Jiangsu Agricultural Science and Technology Innovation Fund, JASTIF: CX(22)2045, RSP-2022/257; King Saud University, KSUJiangsu Agricultural Science and Technology Innovation Fund [CX(22)2045]; King Saud University, Riyadh, Saudi Arabia [RSP-2022/257]; Van Lang University, Vietna
Use of reverse engineering to create a realistic 3D model for CFD analysis of a control damper
No full textAccurate air flow measurements have been a highly sought-after discipline in the industry in recent years, especially among manufacturers of HVAC (Heating, Ventilation, and Air Conditioning) systems. One of the challenges for scientific research is the area of simulation and verification of results for sub-components of these systems, such as reducers, diffusers, or control dampers. Although these parts have a significant impact on measurements, they are often greatly simplified and or completely ignored in CAD models by HVAC manufacturers. As a result of this simplification, significant differences arise between laboratory measured results and CFD simulation results. However, to obtain realistic values from the simulation, it is necessary to use 3D data as close to reality as possible. This paper describes the process of creating a realistic model of a control damper that is part of the distribution box of the air ventilation system. This damper was 3D scanned using an ATOS II Triple Scan 5M and processed using GOM Professional. The dimensions of the duct and the angles between the end positions of the control damper were measured. Using reverse engineering in Geomagic Design X and the measured values, a sufficiently accurate 3D model of the control damper was created. The output data from reverse engineering was used as input data for CFD analysis. The CFD simulation of the control damper was performed for 3 different flow rates (10, 20, and 35 m3/h). Comparisons of simulation results between CAD data from the HVAC manufacturer and data from 3D scanning achieve a difference of up to 35 % (when the control damper is fully closed or partially open). Using a realistic 3D model of the control damper obtained by reverse engineering, the results and outputs of the simulation were significantly refined. The results of this work can be used in the design of distribution boxes or entire HVAC systems. © 2022 IEEE
Teacher's pedagogical approach in the class: The voices of students with physical disabilities
No full textWhile teachers are generally seen as the primary actors guiding the adaptation of students with physical disabilities to mainstream secondary school settings, less is known about these students perceptions of actual teaching practices used by their educators in class. As Czech educational practice is framed by the prevailing educational concept of school integration, this qualitative study investigates physically disabled students views on the teacher s pedagogical approach in class. Obtained via semi-structured interviews, the data were analysed using situational analysis. The findings show that secondary school students with congenital physical disabilities initially perceived their teachers pedagogical approach as overly traditional, with inexperienced and long-Term practising educators showing a lower degree of reflexivity toward learners educational needs in class. It was challenging for educators to accommodate their classes knowledge testing in particular according to each participant s individual needs. After confirmation of special needs and the appropriate adaptation of teaching practices, however, the teachers gradually began to implement inclusive strategies to address the educational needs of these students. We therefore recommend concentrating on the professional training of teachers as well as focusing on work with para-professionals, parents and colleagues to assist teachers in promoting inclusive teaching practice.Univerzita Tomáše Bati ve Zlín
Intercom for a fire brigade truck
No full textIn this paper a design and construction of a simple duplex intercom for a fire brigade truck is introduced. The device has been built and tested. It allows the officer in charge, sitting on the front seat, to communicate with the crew located at the back side of the truck. Moreover, the intercom is accommodated in that way there was a possibility to reproduce the output of the radio receiving set or wireless transmitter, being situated in the cabin of the officer in charge, in the crew cabin. Copyright © (2012) by Danube Adria Association for Automation and Manufacturing (DAAAM)
A mindreader system for improved security in crowded areas
No full textThe objective of this paper is to point out the development of the modern method of the mindreader security system. It deals with its utilization, function and identifying factors of a suspected person. Further, it outlines the individual types of these devices available in the market at present or the ones that will be launched into the market in the future. It also deals with the advantages of the facility compared to the existing methods of detection. The system introduces into the field of security new methods of scanning the physiological expressions of the human body, which enables an increase of security in crowded areas
Use of the high-speed camera in self-defence
No full textThe article deals with the use of high-speed camera in self-defence. It aims at outlining varieties of applications and describing selected applications. It also brings attention to the fact that the science involved in these issues is missing as well as a complete lack of scientific measurements and experiments in this field. I describe my own research which deals with the speed of the fist movement during a direct punch. A description of the experimental process with its elements and results creates part of this article. Pictures and graphs are included for illustration
Smart house assistive technologies for senior citizens
No full textA Smart house is a special type of house that has automated services it offers to its residents to enhance their comfortability. Smart houses can implement for various purposes including luxury automation capability, entertainment, security, mitigation of disability, health, or medical reasons. In this paper, a special smart house design prototype for senior citizens is proposed. The design is proposed to have assistive technologies services easily added to or removed from the smart house. Depending on the need, a service could be added, modified, or removed with little effort. The complexity of service can be extended or limited based on the requirements of the subject senior citizen. Some of the service offerings in this house include; (a) security services, for instance in case of a fire, a fall detection, or a sharp rise in fever symptoms, an alert distress signal would be sent to the caregivers center; (b) action execution services, for example, automated preparation of bathwater, preparation of breakfast, preparation of dinner, switching lights on or off, etc.; (c) interactive services, for instance, remainders for medicine taking schedule, prompt of beverage choice, prompt to send distress signal when possible danger is detected by the system, etc. The comprehensive design would have four main modules: smart house automated services, assistive technologies services, privacy policy protocol, and security services. The design has been developed and would be implemented in the future. © 2022 IEEE
On the software projects' duration estimation using support vector regression
No full textEstimating the project’s duration is one of the critical steps in helping to ensure project success. It helps to allocate resources and personnel appropriately during project development. This study aims to look for a more suitable algorithm between two selected algorithms for estimating project duration. Two machine learning algorithms, Multiple Linear Regression and Support Vector Regression, were used to estimate the project’s duration. The data used here is an ISBSG dataset with intelligent preprocessing to give an ideal fit to the algorithm used. The dependent variables used in the test are project size, maximum team size, and resource level. With the two algorithms selected, the estimated value of the project's duration is relatively close to the actual duration of the project. Through the six evaluation criteria, R-square, MAE, MAPE, RMSE, MBRE, MIBRE and the pair-wise t-test statistical method, the Support Vector Regression algorithm gives a much better estimate of the project's duration than the Multiple Linear Regression algorithm. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.IGA-K-TRINITY/005; Univerzita Tomáše Bati ve Zlíně: IGA/CebiaTech/2022/00
Factors influencing eWOM review adoption: An empirical evidence from Vietnam tourism website
No full textBased on the cognition-affection-behaviour model, this study investigates the effects of tie strength, homophily, source trustworthiness, and source expertise on e-WOM credibility (EWC), which in turn affects the attitude toward the product (ATP), the attitude toward the website (ATW), and the adoption of eWOM review (ERA). The study sample includes 527 travellers who purchased a full trip via the Viet travel website. This study used Structural Equation Modelling (SEM) to assess the suggested model, demonstrating a good fit. The findings show that tie strength, homophily, source trustworthiness, and source knowledge all have a substantial and favourable influence on EWC. Furthermore, homophily has a considerable and favourable influence on the source's strength and trustworthiness. The findings also show that EWC has a substantial and favourable influence on ATP, ATW, and ERA. This research adds to the literature by including several viewpoints and aspects from informational and interpersonal drivers. Furthermore, this research argues that these variables influence ERA via EWC and dual mind-sets (ATP and ATW)