12 research outputs found
INFLUENCE OF PRACTICAL LEVEL ON DECISION MAKING IN HANDBALL
No full textVarious studies on cognitive expertise have developed a new approach to describing the superiority of experts on novices as a benefit of directory knowledge acquired at the heart of practice. This study had as its main objective to confirm the superiority of cognitive performance sports experts. Indeed, the interaction of conceptual knowledge (treatment level) and perceptual knowledge (low-level processing) optimizes performance through a rapid recall and recognition memory knowledge among experts. It does not reach this performance was achieved in the novices. The results confirm that a large repertoire of knowledge acquired through practice facilitates the response to the demands of sporting tasks
APPLICATION OF SIMULATION TO STUDY DECISION MAKING IN HANDBALL
No full textVarious studies on cognitive expertise have developed a new approach to describing the superiority of experts on novices as a benefit of directory knowledge acquired at the heart of practice. This study had as its main objective to confirm the superiority of cognitive performance sports experts. Indeed, the interaction of conceptual knowledge (treatment level) and perceptual knowledge (low-level processing) optimizes performance through a rapid recall and recognition memory knowledge among experts. It does not reach this performance was achieved in the novices. The results confirm that a large repertoire of knowledge acquired through practice facilitates the response to the demands of sporting tasks
Making Images Speak: Human-Inspired Image Description Generation
No full textDespite significant advances in deep learning-based image captioning, many state-of-the-art models still struggle to balance visual grounding (i.e., accurate object and scene descriptions) with linguistic coherence (i.e., grammatical fluency and appropriate use of non-visual tokens such as articles and prepositions). To address these limitations, we propose a hybrid image captioning framework that integrates handcrafted and deep visual features. Specifically, we combine local descriptors—Scale-Invariant Feature Transform (SIFT) and Bag of Features (BoF)—with high-level semantic features extracted using ResNet50. This dual representation captures both fine-grained spatial details and contextual semantics. The decoder employs Bahdanau attention refined with an Attention-on-Attention (AoA) mechanism to optimize visual-textual alignment, while GloVe embeddings and a GRU-based sequence model ensure fluent language generation. The proposed system is trained on 200,000 image-caption pairs from the MS COCO train2014 dataset and evaluated on 50,000 held-out MS COCO pairs plus the Flickr8K benchmark. Our model achieves a CIDEr score of 128.3 and a SPICE score of 29.24, reflecting clear improvements over baselines in both semantic precision—particularly for spatial relationships—and grammatical fluency. These results validate that combining classical computer vision techniques with modern attention mechanisms yields more interpretable and linguistically precise captions, addressing key limitations in neural caption generation
Diagnosis of Percentages of Progress in Weight Training and its Relationship to the Dynamic Development of Muscle Strength of Football Players
No full textMuscle strength is one of the most important elements of fitness that must be available to football players. For a long period of time the weight training has been the subject of controversy among the specialists in the preparation and training of football players, the scientific researches has settled this controversy, where most of the results indicated that weight training has become necessary for the development of different types of muscular strength (maximum force – the special force of speed – endurance power). In fact the Algerian football sport lacks weight training programs and how to plan and evaluate the level of development of muscular strength during the training program with scientific bases and methods to avoid muscle inflation and increase muscle mass that can affect skill performance. The researchers' study note that there is a great detour of football players around the muscle strengthening rooms without a formal training program, which may lead to an increase in muscle inflation. So that the researchers decided to design a weight training program ,and diagnosing the percentage of progression and its relation to the dynamics of muscle strength development of different muscle groups and increasing muscle inflation as much as required for football players under 21 years of research experimental sample
Contribution study of the thermodynamics properties of the ammonia-water mixtures
No full textThe full thermodynamic study of the absorption refrigeration units requires
the knowledge of the thermodynamic properties of the used mixture. The
present work deals with the mathematical modeling of the thermodynamic
properties of ammonia-water mixtures using various models. The presented
model covers high vapor-liquid equilibrium pressures up to 110 [bar] and
temperatures from 230 to 600 [K]. Furthermore, the calculation of the
thermodynamic properties of the ammonia-water mixtures and their pure
components was carried out. The obtained results were compared with results
given in the literature. This shows a good concordance. <br><br><font color="red"><b> This article has been corrected. Link to the correction <u><a href="http://dx.doi.org/10.2298/TSCI180624196E">10.2298/TSCI180624196E</a><u></b></font></jats:p
Gastrointestinal stromal tumors: epidemiological, clinical and therapeutic profile in Marrakech University Hospital
No full textLes tumeurs stromales gastro-intestinales ou GIST sont des tumeurs mésenchymateuses rares (1 à 3 % des tumeurs malignes gastro-intestinales). Elles font l’objet de multiples controverses. Nous rapportons une étude rétrospective portant sur 17 cas de tumeurs stromales gastro-intestinales confirmées histologiquement et à l'immunohistochimie, colligés au CHU Mohammed VI. L’âge moyen des patients était de 59 ans (de 29 à 80 ans). La symptomatologie révélatrice était une douleur abdominale dans la majorité des cas (49 %), une masse abdominale retrouvée chez 35 % des patients et une hépatomégalie dans 2 cas. Il s’agissait de 6 cas de tumeurs gastriques, 4 cas de tumeurs mésentériques, 4 cas de tumeurs jéjunales, et 3 cas de tumeurs rectales. Quinze patients ont été traités par exérèse chirurgicale complète. A l’histologie, l’expression du marqueur C KIT à était présente dans 100 % des cas. Dans 13 cas, il s’agissait de tumeurs localisées, deux patients présentaient d’emblée des tumeurs localement avancées et deux autres avaient des métastases hépatiques au moment du diagnostic. Un traitement médicamenteux à base d'Imatinib était entrepris dans les tumeurs classées de haut grade de malignité, dans 6 cas en adjuvant, et dans 2 cas en néoadjuvant. Sur un recul moyen de 3 ans, la survie moyenne était de 88 % à 3 ans et on notait 8 cas de rémission complète, 3 cas de rémission partielle, 2 cas de récidive tumorale et 2 cas de décès.Stromal tumors or GIST (gastrointestinal mesenchymal tumors) are rare (1-3% of gastro-intestinal malignancies). They are a subject of controversy. We report a retrospective study of 17 cases of gastrointestinal stromal tumors confirmed histologically and immuno-histochemically, collected at the University Hospital Mohammed VI. The average age of patients was 59 years, (29-80 years). The symptoms were abdominal pain in most cases (49%), abdominal mass found in 35% of our patients and hepatomegaly in 2 cases. There were 6 cases of gastric tumors, 4 cases of mesenteric tumors, 4 cases of jejunal tumors, and 3 cases of rectal tumors. Fifteen patients were treated with complete surgical resection. A histological marker expression C KIT was present in 100% of cases. In 13 cases tumors were localized, 2 patients had locally advanced tumors immediately and 2 others had liver metastases at diagnosis. Medication with Imatinib was initiated in the tumors classified high-grade malignancy in 6 cases in adjuvant and neoadjuvant in 2 cases. On a mean of 3 years, the 3-year survival was 88% and we had 8 cases of complete remission, 3 cases of partial remission, 2 cases of tumor recurrence and 2 deaths
STUDY OF PERCEPTION OF PROFESSIONAL COMPETENCES IN TEACHERS IN RELATION TO THE REQUIREMENTS OF THE PROFESSION OF TEACHING PHYSICAL EDUCATION
No full textThe purpose of this study was to identify teachers' perceptions of competence and knowledge of pedagogical needs related to occupational skills based on professional experience and academic education. Participants were 85 secondary school teachers from several schools who responded to a questionnaire that included a first scale of competency perceptions and a second scale on the recognition of teaching needs. The comparison of teacher perceptions based on teaching experience and teachers experience was done by applying the one-way ANOVA and Tukey's multiple post hoc comparisons. Teachers' perceptions were influenced by their experience as less experienced teachers qualified at lower levels of competence and more teaching needs; Teachers with a higher education, whether in physical education or others, perceived themselves to be more competent than teachers without a higher education. Finally, the majority of teachers perceived themselves as competent, but nevertheless indicated that they had teaching needs, which brings important feedback to the teacher of the secondary trainer. This suggests that teachers are interested in increasing their knowledge and competence in a wide range of areas which should be considered in future Teachers education programs
THE IMPORTANCE OF THE PRACTICE OF COMPETITIVE GAMES KID’S ATHLETICS IN PHYSICAL EDUCATION FOR COLLEGE STUDENTS (11-12 YEARS) USING THE COOPERATIVE LEARNING STRATEGY
No full textPhysical education teachers should purposefully accept the fact that they are the role models in developing individual and group characteristics. In addition, teachers should structure competitive activities to maximize the participation of all students. In this regard, teaching physical education is an exciting experience. It is important that we teach more than just knowledge, skills, and strategies like cooperative strategy and other. From this perspective, the teacher must model the desired outcome in the same way he demonstrates the critical elements of a kids' athletics. The aim of this experimental study is to determine the effect of the practice of the cooperation strategy with a new concept of Kids' Athletics; their contribution towards the improvement of teaching conditions in lessons of Physical Education and Sports in middle School; and the improvement of sports performance among students of the middle School in long jump (m), shot put (m), sprint 50 m (s), and endurance racing 1000 m (s). Thus, this study is one of the very best practices that promote a higher level of participation among all students in physical education. It is designed to give children the pleasure of playing athletics. It helps them to embark on sprinting, endurance running, jumping, and throwing. Two groups of girls (aged 11 ± 0.65 years) participated in this study. The students were divided into experimental and control group (n=24). The results according to the research variables is characterized by significant differences (*p≤0.05). Consequently, teacher’s use of the cooperative learning techniques in physical education will encourage a higher level of participation among many students in the activities of the kids' athletics. Therefore, this will improve the physical performance of students and their relationships better than the traditional teaching method using a command style (Mosston & Ashworth, 2002)
INVESTIGATING THE RELATIONSHIP BETWEEN CARDIAC AUTONOMIC MODULATION AND RESTING HEART RATE IN YOUTH ACROSS PHYSICAL ACTIVITY LEVELS
No full textObjective: This study aimed to Explore the relationship between cardiac autonomic modulation (CAM) and resting heart rate (HRR) in children and adolescents, focusing on how physical activity levels influence autonomic regulation and cardiovascular health.
Methods: A total of 134 children and adolescents participated in this study. CAM and HRR were assessed using Polar heart rate monitors, and physical activity levels were evaluated using the Rider questionnaire. The relationship between CAM and HRR, stratified by physical activity levels, was analysed using linear regression adjusted for sex, age, and somatic maturation.
Results: Insufficiently active individuals exhibited a significant inverse relationship between high HRR and lower HRV indices, including RMSSD (β = -0.125), SDNN (β = -0.142), SD1 (β = -0.176), and SD2 (β = -0.114). In contrast, physically active individuals showed a weaker relationship, with only the SD1/SD2 index (β = -0.006) significantly associated with HRR. These findings suggest that regular physical activity preserves autonomic balance and reduces cardiovascular risk.
Conclusions: High resting heart rate is associated with reduced cardiac autonomic modulation in insufficiently active children and adolescents, while physical activity mitigates this relationship. These results underscore the importance of promoting physical activity in youth to enhance autonomic regulation and prevent future cardiovascular diseases. Future research should explore longitudinal and mechanistic insights to further elucidate these relationships
Broadband and Low-Frequency Acoustic Liner Investigations at NASA and ONERA
No full textInternational audienceNASA and ONERA have explored a number of acoustic liner concepts over the last few decades. This paper begins with a brief review regarding conventional liners as well as the recent implementation of multi-degree-of-freedom liners enabled by embedded mesh caps. Six novel liner concepts are presented, along with the accompanying impedance prediction models used in their design. Each of the NASA concepts is designed to vary the impedance over the surface of the liner in a controlled manner, whereas the ONERA concepts make use of long neck acoustic resonators. Selected results are presented for each of these liners evaluated in the NASA and ONERA test rigs. Finally, a set of aeroacoustic metrics is defined for comparison standardization between conventional and innovative acoustic liners and all the concepts are compared on this basis
