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Abstract

Globally, ODL institutions experience mismatch between scalability of numbers and scalability of success rates. This study explored the scalability of success rates in open, distance e-learning as perceived by the learners within the Chain of Response Model. The primary aim of the study was to look at online learners’ success rate by focusing on two institutional factors drawn from the Model, namely: the learner’s study modules related challenges and support services. The results of an online survey of 180 undergraduate and postgraduate online learners of Egerton University, Kenya, showed: (a) the response rate of 16%; (b) a mixture of hardware, software and personal factors were identified as pre-requisites for e-learning success: (c) a number of mathematically-based modules were identified as risks to success in online studies; and (d) while the learners saw the learner support services as important they were less satisfied with their provision. The present study points to two broad areas that require further studies. First, qualitative look into specific challenges that learners face with respect to learner support service provisions, modules interactivity, and those identified as difficult to follow and thus posing risks to the learners’ success. Second, investigation into tutor-learner contacts with the view of identifying whether such contacts are reactive or proactive.

1 Introduction At present, suspended monorail systems constitute a very common means of transportation in the Polish hard coal mines. [ 1 , 2 ] The main advantages of the suspended monorail include the independence of the route from the working floor surface irregularities and the possibility to transport cargo of significant mass and size. The masses and dimensions of machines and devices transported via monorail have increased considerably in recent times. This is particularly related to the transport of longwall system elements and road support elements. For

Abstract

The aim of this paper is to explore the possibility of working with a personalized reusable composite formwork in order to obtain architectural shapes for roof and wall elements without material loss. Starting with the analysis of the market needs, the definition of the functions and continuing with the conceptual and technical solution proposals, we created a formwork variant that can be reused for different complex shapes. The researches set on sight different variations of the material used, their thickness and the contact surface given by the support elements.

Abstract

The article is focused on testing of selected properties of linear and planar textiles from modified cotton yarns. In this article, the influence of woven fabric construction on wettability and possibilities of detection of moisture in the woven fabric is analyzed. Improving the physiological and hygienic properties for woven fabrics can be achieved with a specially designed textile structure in combination with a permanent surface finish of sub-set of yarns. Inserting of hydrophilic and hydrophobic set of threads in the woven structure makes possible controlled water transport. Controlled transport of water ensures good clothing comfort. Using such woven fabric, accumulation of water on the skin does not occur during the process of thermoregulation of the human body. The properties and behavior of the designed fabric will be determined by surface finishing of the warp and weft yarns (sub-set of yarns), which are supporting elements of the fabric.

Abstract

From information obtained from periodic surveys of cages used in the shaft of one of the Polish mines, it appears that the majority of registered damages of their supporting elements are fatigue cracks. These cracks are formed and develop mainly in main nodes or welds in the areas of their connection with the construction of the cage. In order to eliminate the causes of these damages and to increase the durability of cages, it will probably be necessary to reconstruct those fragments of the cages in which they occur. In order to determine loadings of load-bearing elements and the state of stress that arises in them during the operation of the device, a numerical model of the cage was developed. The results of the calculations made as well as their analysis form the basis for the assessment of the strength and durability of the load-bearing elements of the discussed cage. The key problem determining the durability of the structure – as shown by the analyzes carried out – is the method of constructing the connection of the strings with the appropriate elements of the cage. Changing this state requires significant structural changes of these nodes, which the authors of this study pointed out.

Abstract

Issues related to critical infrastructure safety is highly demanding in aspect of newly projected systems. In this paper a problem of modeling and simulation of the supporting structure behavior of critical facility (without or with proposed protective cover) loaded with a shock wave is presented. Authors assume that two different phenomena will be responsible for minimization of shock wave effects: flow around cylindrical panel and energy absorption by panel structure. In this paper research focuses on the description and analysis of the process of explosion near the supporting elements and the blast interaction with the structure.

Abstract

The purpose of this study was to examine how Slovak athletes experience dual career (the combination of an athletic career with education and/or work). The study strived to gain an understanding of the athletes’ attitudes towards education as well as perceived difficulties and supporting elements in pursuing dual career. Five athletes were interviewed once for approx. 105 min. The interviews and data analysis were based on Intepretative Phenomenological Analysis (IPA) and the interviews were focused on their experience in combining an athletic career with education or work. The athletes experienced dual career as manageable as long as they were assisted by at least simple supportive structures and provided flexible arrangements. Peers had played an important role in athletes’ decision-making concerning dual career and in providing social support when facing challenges within dual career. The teachers’ prejudice against the athletes based on their athletic role and the lack of dual career structures appeared to be significant deficiencies in dual career support. Finally, the analysis revealed the negative perception of athletes and sport science students by educational representatives. This perception may be a hurdle to be overcome in future dual career development.

Abstract

On 25th of January 2018 Civil and Military Aeronautical Rescue Coordination Centre (ARCC) commenced operations in Polish Air Navigation Services Agency (PANSA). PANSA increased significantly its contribution in the domain of coordination of search and rescue activities in ASAR service in the Polish area of responsibility. Up to this date all tasks of ARCC Centre were conducted mainly by Armed Forces of Republic of Poland, which performed coordination function in ASAR (Aeronautical Search and Rescue) service. The bodies responsible were Aeronautical Search And Rescue Centre located in Air Operations Centre – Air Component Headquarter in Warsaw and sub-centre in Gdynia, part of Naval Operations Centre of Naval Component Headquarter.

According to international commitments resulting mainly from Convention on International Civil Aviation signed on 7th of December 1944 in Chicago and ratified by Poland together with Annex 12 “Search And Rescue”, Poland committed to establish aeronautical search and rescue service called ASAR within Polish region and to assure its operation. ASAR service is the only service in Poland for rescue purposes and is designated to search and rescue of aircraft in distress, provision of help for aircraft crews and passengers and other victims of aeronautical accidents (regardless to nationality of these aircraft and persons). ASAR service tasks include search of designated area to find location of aircraft and victims of aeronautical accidents, determination of their status and commencement of rescue actions at the location using dedicated forces and measures as well as forces and measures of another systems, mainly from State Medical Rescue, National Firefighting and Rescue System and Maritime Search and Rescue Service. ASAR service consists of:

a)commanding element – Civil-Military Aeronautical Rescue and Coordination Centre,

b)executive elements – Aeronautical Search and Rescue Teams (LZPR), and

c)supporting elements – alerting points (air traffic services units operating in the framework of alerting service).

References [1] Miedzińska D. Niezgoda T., Numerical Simulation of shock energy absorption mechanism in metal foam microstructure, XII Pan American Congress of Applied Mechanics, Port of Spain, Trinidad & Tobago, January, [2] Mazurkiewicz Ł., Małachowski J., Baranowski P., Optimization of protective panel for critical supporting elements, Composite Structures, 134 2015, 493-505 [3] Barnat W., Environmental influences on propagation of explosive wave on the dynamic response of plate, Bulletin of the Polish Academy of Sciences - Technical Sciences, 2014, 62, 3, 423

References [1] Miedzińska D. Niezgoda T., Numerical Simulation of shock energy absorption mechanism in metal foam microstructure, XII Pan American Congress of Applied Mechanics, Port of Spain, Trinidad & Tobago, January, [2] Mazurkiewicz Ł., Małachowski J., Baranowski P., Optimization of protective panel for critical supporting elements, Composite Structures, 134 2015, 493-505 [3] Barnat W., Environmental influences on propagation of explosive wave on the dynamic response of plate, Bulletin of the Polish Academy of Sciences - Technical Sciences, 2014, 62, 3, 423