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How to Evaluate Interactions during a Debate of Ideas  [PDF]
Zeineb Zerai, Rim Mekni
Creative Education (CE) , 2017, DOI: 10.4236/ce.2017.84042
Abstract: The idea of a debate of ideas is part of an innovative conception of the teaching/learning system at school, in which knowledge is developed with the help of peers and the teacher. The debate of ideas first appears as a situation of verbalization about action intended to make aware of the task to be carried out and the instructions that characterize it. To evaluate its effects, we will take data from the experimentation of Zerai (2009) and give us a triangulation between the result and the score of the encounters, quantitative data (balls played, balls conquered, etc.) and a qualitative data: the roadmap. We will try to test the contributions of peer interactions. The methodology used was to observe and retrieve data on a group of Tunisian second-year girls from Thala Secondary High School in a handball cycle. In this group of twenty girls, we organized four sub-groups to form the teams. The chosen triangulation allows an indirect measure of the effectiveness of the debate of ideas. The performance of the team (the ratio of shots to the number of goals) appears very quickly as a trigger for concertation between the players. The observation made collectively on the losses of the ball will also, very quickly generate reactions. The roadmap relies more on the planned strategy and the changes of roles within the team that it implies. In conclusion, comparing the selected indicators provides a realistic way of assessing the adequacy between interactions and progress in the game. This type of work emphasizes the time needed to succeed. One of the achievements of the research in didactics of collective sports at school is that the learning of a game can not be conceived without an important practice. For pupils, a real learning in collective sports games lies, in situations of problem gambling, to observe, to extract, to evaluate the information more and more relevant to reduce the time of analysis, and thus of decision to act on the opposition reports.
Effects of Two Warm-Up Modalities on Short-Term Maximal Performance in Soccer Players: Didactic Modeling  [PDF]
Chameseddine Guinoubi, Hajer Sahli, Rim Mekni, Salma Abedelmalek, Karim Chamari
Advances in Physical Education (APE) , 2015, DOI: 10.4236/ape.2015.51009
Abstract: The purpose of this study was to investigate the effects of two warm-up modalities (scheduled before a soccer match) on short-term maximal performance and physiological responses in soccer players. Twenty soccer players (Age = 22.1 ± 4.4 years; Height = 183.2 ± 7.1 cm, Body mass = 77.6 ± 8.5 kg) participated in this study. They randomly performed two different pre-match warm-up protocols on separate days with different excitation order component sequences where the last component of the warm-up excitation sequence was imputed completed either in the middle (WU-1), or at the end of the warm-up (WU-2). During the completion of the warm-up, heart rate (HR), and ratings of perceived exertion (RPE) were recorded. After the warm-up, participants performed a repeated sprint ability test (RSA) and the five jump (5JT) test. The results revealed no significant differences in WU-1 and the WU-2 for HR and RPE. In WU-2 condition, significant differences in the 7th acceleration phase of the repeated 10 m sprint (S7) (p < 0.05) was observed in comparison to WU-1. Likewise, the performance of 5JT (p < 0.05), and the 10-m of the RSA (p < 0.05) increased to WU-2 in comparison with WU-1. In conclusion, we recommended performing warm-up at the end of pre-match rather than in the middle to ameliorate the performance of soccer players during the competition.
Verbalization in Sport and Physical Education Study of Volleyball Teachers’ Conceptions  [PDF]
Najmeddine Ouesslati, Rim Mekni, Hajer Sahli, Anissa Bouassida
Creative Education (CE) , 2015, DOI: 10.4236/ce.2015.614161
Abstract: In nowadays SPE lessons, many teachers and their colleagues talk about other disciplines. This is certainly due not only to the evolution of our disciplines last two decades or to the institutional requirements they entail, but also to the teacher’s own personality and to the conception that elaborates his/her work (Thierry, 2007). This article aims to clarify volleyball teachers’ regards towards teaching/learning process that is based on verbalization. First, we compared the answers of teachers who were interrogated regardless of different variables, using the “global analysis method”. Then, we used the “differential” method to notice the impact of the variables “teaching experience” and “grade” on teachers’ conceptions. Verbal intervention is necessary in exercising the teaching profession. One can say that this verbal intervention can be both a constraint and a resource, but it constitutes certainly one of the charisma bases and teacher’s authority. Certain studies (Galacteros and Lavorel) showed that verbalization, in all its aspects (phonation, gesture, words arrangement, and discourse structure) could reveal the construction of the speaker personality. A transposition of this close dependence is found in a sentence of J.-C. Fortin (School and Culture): “no one can really teach if he does not teach something true or valid in his own eyes”.
Implicit/Explicit Speech and Relationships between Girls/Boys Students in Team Sport Learning (Case of Tunisian Basketball)  [PDF]
Rim Mekni, Hajer Sahli, Chamseddine Guinoubi, Wissam Ben Khalifa, Makrem Zghibi
Creative Education (CE) , 2016, DOI: 10.4236/ce.2016.74072
Abstract: The intervention of the context, which represents the situation where the speech is delivered, upsets the logic so that the semiotic meaning produced by the situation of enunciation takes precedence over that of departure. This difference in meaning between “what is said” and “what is covered” was taken by the “pragmatic discourse” which focuses on the elements of language in context and in co-text. Austin (1970) distinguishes three speech acts: the elocutionary act, the illocutionary act and perlocutionary act that will be studied in the context of school and classroom of EPS basketball. An analysis of various acts of implicit and explicit language will allow studying the reports of site (Kerbrat-Orecchioni, 2001) between girls and boys. All statements are of assertive type referred to with the order constituting instructions to remedy the failure. Most are accompanied by a brief argument that explains the cause or the consequence of the performed act. Although girls seem to take part in the discussion, their actions remain less important. If language is a form of action, if any statement is already pragmatically loaded, this charge is its propensity to act on others and to produce effects.
Using GIS Data to Build Informed Virtual Geographic Environments (IVGE)  [PDF]
Mehdi Mekni
Journal of Geographic Information System (JGIS) , 2013, DOI: 10.4236/jgis.2013.56052

In this paper, we propose a novel approach to automatically building Informed Virtual Geographic Environments (IVGE) using data provided by Geographic Information Systems (GIS). The obtained IVGE provides 2D and 3D geographic information for visualization and simulation purposes. Conventional VGE approaches are generally built upon a grid-based representation, raising the well-known problems of the lack of accuracy of the localized data and the difficulty to merge data with multiple semantics. On the contrary, our approach uses a topological model and provides an exact representation of GIS data, allowing an accurate geometrical exploitation. Moreover, our model can merge semantic information, even if spatially overlapping. In addition, the proposed IVGE contains spatial information which can be enhanced thanks to a geometric abstraction method. We illustrate this model with an application which automatically extracts the required data from standard GIS files and allows a user to navigate and retrieve information from the computed IVGE.


A Multiagent Geosimulation Approach for Intelligent Sensor Web Management
Mehdi Mekni,Phil Graniero
International Journal of Distributed Sensor Networks , 2010, DOI: 10.1155/2010/846820
Abstract: A Sensor Web (SW) consists of a large collection of small nodes providing collaborative and distributed sensing abilities in unpredictable environments. Nodes composing such an SW are characterized by resource restrictions, especially energy, processing power, and communication capacities. A sensor web can be thought of as a spatially and functionally distributed complex system evolving in and interacting with a geographic environment. So far, the majority of the currently deployed SWs has been mainly used for prototyping purposes. These SWs operate without considering a management scheme and do not take into account the geographic environment characteristics in which they are deployed. Multiagent Geosimulation (MAGS) is a recent modeling and simulation paradigm which provides a flexible approach that can be used to analyze complex systems such as SW in large-scale and complex georeferenced environments. In this paper, we propose to use an MAGS approach to support SW management. Moreover, we present Sensor-MAGS, a multiagent geosimulation system which manages sensor nodes using Informed Virtual Geographic Environments (IVGE). This system is applied in the context of a water resource monitoring project. 1. Introduction Recent advances in wireless communications and sensing technologies have enabled the development of low-cost, low-power, multifunctional sensor nodes that are small in size and which communicate over short distances [1]. Sensor Webs (SW) are distributed network systems composed of hundreds of such sensor nodes [2]. New capabilities such as microsensing and in situ sensing as well as the wireless connection of these nodes open new possibilities for applications in various domains such as military, environment, health, home, space exploration, chemical processing, and disaster relief [3]. The low per node cost and the shrinking size of microprocessors in addition to the enhancement of their computation capacities, while decreasing their energy consumption, will allow dense distribution of these wireless networks of sensors and actuators [4]. SW can be thought of as a macroinstrument concept that allows for the spatiotemporal understanding of phenomena which take place in geographic environments through the coordinated efforts of a large number of sensing nodes of different types [2]. However, once SW are deployed, the management of such complex systems is a real challenge because of their limited energy, communication, and processing capabilities [1]. In spite of the intensity of the research carried out in this field, SW are still in their
Software Architectural Design in Agile Environments  [PDF]
Mehdi Mekni, Gayathri Buddhavarapu, Sandeep Chinthapatla, Mounika Gangula
Journal of Computer and Communications (JCC) , 2018, DOI: 10.4236/jcc.2018.61018
In this paper, we propose a novel methodology to guide and assist practitioners supporting software architecture and design activities in agile environments. Software architecture and design is the skeleton of a system. It defines how the system has to behave in terms of different functional and non-functional requirements. Currently, a clear specification of software architectural design activities and processes in agile environments does not exist. Our methodology describes in detail the phases in the agile software design process and proposes techniques and tools to implement these phases.
Oxidative DNA damages by chemical exposures at work  [PDF]
Kyung-Taek Rim
Advances in Bioscience and Biotechnology (ABB) , 2012, DOI: 10.4236/abb.2012.327118
Abstract: Oxidative DNA damage is an inevitable consequence of cellular metabolism, with a propensity for increased levels following toxic insult. Of the molecules subject to oxidative modification, DNA has received the greatest attention, with biomarkers of exposure and effect closest to validation. There are many chemicals in workplaces that could cause oxidative DNA damages such as carcinogens. This review concentrated on studies published between the years 2000 and 2012 that used to detect 8-oxodG in humans (workers), laboratory animals and in cell lines. Given the recent toxicological results from oxidative stress, it is important to review these studies to improve the current understanding of the oxidative DNA damages by chemical exposures at work. It also suggests that biomarkers may be responsible for understanding the role of oxidative DNA damage in disease, highlighting the need for further studies.
Physico-Chemical and Biological Characteristics of Stagnant Surface Water Bodies (Ponds and Lakes) Used for Drinking and Domestic Purposes in Niger Delta, Nigeria  [PDF]
Akpofure Rim-Rukeh
Journal of Environmental Protection (JEP) , 2013, DOI: 10.4236/jep.2013.49106

The surface water quality of some stagnant water bodies (ponds and lakesObi Lake, Usede pond, Oguta lake, Omuku pond, Ugheghe pond, Karabodone lake, Abua lake, Ikarama lake, Tenmako lake, and Adiegbe lake) in the Niger Delta area of Nigeria have been investigated experimentally by analysing the physico-chemical and biological characteristics of the surface water samples. Results show: pH (5.10 - 7.40), temperature (26.4°C - 31.0°C), turbidity (7.83 - 27.7NTU), electrical conductivity (13.5 - 34.8 μS/cm), biochemical oxygen demand (BOD) (1.07 - 19.5 mg/l), chemical oxygen demand (COD) (1.90 - 21.5 mg/l), suspended solids (SS) (9.70 - 37.3 mg/l), dissolved oxygen (DO) (2.7 - 8.7 mg/l), total dissolved solids (TDS) (33.8 - 187.0 mg/l), total phosphorus (0.73 - 2.47 mg/l), ammoniacal nitrogen (AN) (0.018 - 4.70 mg/l) and total fecal coliform count (TFCC) (nil

An Assessment of the Contribution of Municipal Solid Waste Dump Sites Fire to Atmospheric Pollution  [PDF]
Akpofure Rim-Rukeh
Open Journal of Air Pollution (OJAP) , 2014, DOI: 10.4236/ojap.2014.33006

Municipal solid waste open dump site operation is an important element of waste management in Nigeria, both today and in the future. Dump site fires are common occurrences in the study area. The contribution of municipal solid waste dump site fires to atmospheric pollution in the Niger Delta, Nigeria has been assessed experimentally. Five (5) municipal solid waste dump sites where fire incidence is a frequent and regular occurrence were chosen for the study. At each of the identified municipal solid waste dump site, eight (8) air quality monitoring parameters, suspended particulate matter (SPM10), nitrogen dioxide (NO2), carbon dioxide (CO2), carbon monoxide (CO), sulphur dioxide (SO2), methane (CH4), ammonia (NH3) and Hydrogen sulphide (H2S) were determined using a series of hand held air quality monitoring equipment. Results indicate the levels of SPM ranged between 773 and 801 μg/m3 and the levels of CO ranged between 133.7 and 141.6 ppm. The levels of CO

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