Dog harnesses are becoming more popular, with their large variety stemming from the idea that different dogs and scenarios require different types of harnesses. While their benefits over collars are self-explanatory, there is a lack of research on their effect on gait, and even the existing studies examine only a limited set of parameters. The goal of present study was to establish a method capable of quantifying canine gait in detail. Based on 3D motion capture, the developed method allows for the examination of 18 joint angles and 35 spatio-temporal parameters throughout multiple gait cycles, and can be used to analyze canine movement in detail in any kind of scenario (e.g. comparing healthy and lame dogs, or measuring the effect of training). The method is presented through the measurement of how different harnesses affect walking kinematics compared to free (unleashed) movements. Four dogs with varying body sizes and breeds and multiple types of harnesses were included. Marker data was filtered using a zero-lag 6th order Butterworth-filter with a cutoff frequency of 20 Hz. The normality of the spatio-temporal and joint range of motion parameters was tested using the Anderson-Darling test (p = 0.05), with most parameters passing in 60+% of test cases. Swing time and range of motion of the sagittal aspect of spinal angle at T1 vertebrae failed more regularly, both resulting from the measurement setup rather than the actual parameters being not normally distributed. Two-sample Kolmogorov-Smirnov tests (p = 0.05) were used to compare each parameter’s distribution between cases, showing that most parameters are significantly altered by the harnesses in about 2/3rd of the cases. Based on the results, there’s no absolute superior harness, however, it is possible to select the best fit for a specific dog and application, justifying their large variety.
A műszaki- és gazdasági felsőoktatásban folyó kalkulusoktatás komoly kihívás elé állítja a tanárokat: viszonylag rövid idő alatt, nagy mennyiségű anyagot kell megtanítaniuk úgy, hogy a hallgató a matematika kurzusokon elsajátított ismereteket a szaktárgyakban, akár több félév csúszással is hasznosítani tudja. Olyan módszert kell kidolgozni, ami egy tudásában és képességeiben eltérő, nagy létszámú hallgatói közösségben is jól alkalmazható. A teszthatás, bár megfelel ezen követelményeknek, mégsem tartozik a gyakran alkalmazott metódusok közé. A módszer, amely a tanulás középpontjába az előhívást helyezi, sem a pedagógusok, sem a diákok között nem örvend nagy népszerűségnek. A teszthatás a többi tanulási-, tanítási metódushoz képest sokkal inkább gátat tud szabni a felejtésnek, de a hallgatónak ki kell mozdulnia a passzív befogadó szerepből, ami többeknek lehet kevésbé komfortos. Ezt a módszert találtuk alkalmasnak arra is, hogy a számonkérés előtti rövid időszakra koncentrálódó, úgynevezett kampányszerű tanulás helyett hallgatóinkat a folytonos tanulásra bírjuk. Ez azért volt fontos számunkra, mert bár rövid távon a megmérettetés előtti intenzív tanulás is eredményes, ennél a felejtés rendkívül gyors.A BME Gépészmérnöki Karának elsőéves mechatronikus és energetikus hallgatói számára az EduBase Online Oktatási Platform segítségével olyan könnyen kivitelezhető kalkulusoktatást valósítottunk meg, ami a teszthatás szempontjait szem előtt tartotta, kihasználta annak előnyös tulajdonságait. Jelen cikkben bemutatjuk a 2018/2019. tanév tavaszi szemeszterében, a Matematika G2 kurzuson végzett kutatásunk eredményeit. Hétről hétre, napi bontásban követjük a hallgatók tanulási aktivitását, vizsgáljuk a kampányszerű és a folytonos tanulással elért eredményeiket. Calculus education in engineering and economic higher education programmes poses a severe challenge for teachers: in a relatively short period of time, they have to teach a large amount of material so that the students can build on the acquired knowledge in further subjects even after several semesters. A method needs to be developed that can be applied well among large, heterogeneous students with different knowledge and skills. Test effect meets these requirements, although is not one of the most commonly used methods, since this approach that puts development at the centre of learning is not very popular among educators or students. The test effect can be a much more effective tool to reduce forgetting than other learning and teaching methods, but the student must move out of their passive, receptive role, which may be less comfortable for many. We also found this method to be suitable for continuous learning instead of so-called campaign-like learning, which focuses only on a short period before the examination. This was important to us since intensive learning before the exams is often effective in short term, but forgetting is also extremely rapid afterwards.For the first-year mechatronics and energy engineering students at BME Faculty of Mechanical Engineering, with the help of the EduBase Online Education Platform, we completed an easy-to-implement calculus course that took into account the aspects of the test effect and took advantage of its benefits. In this article, we present the results of our research in the spring semester of the academic year 2018/2019 in the Mathematics G2 course. From week to week, we followed the learning activity of the students on a daily basis, examining their results achieved through campaign-like and continuous learning.
We examined the effects of side-dominance on the laterality of standing stability using ground reaction force, motion capture (MoCap), and EMG data in healthy young adults. We recruited participants with strong right (n = 15) and left (n = 9) hand and leg dominance (side-dominance). They stood on one or two legs on a pair of synchronized force platforms for 50 s with 60 s rest between three randomized stance trials. In addition to 23 CoP-related variables, we also computed six MoCap variables representing each lower-limb joint motion time series. Moreover, 39 time-and frequency-domain features of EMG data from five muscles in three muscle groups were analyzed. Data from the multitude of biosignals converged and revealed concordant patterns: no differences occurred between left-and right-side dominant participants in kinetic, kinematic, or EMG outcomes during bipedal stance. Regarding single
Folk dance is a collection of traditional dances that requires years of practicing to perform correctly. The aim of the present study was to develop a complex biomechanical measurement procedure that investigated Hungarian folk dancers’ balancing ability and lower body kinematics through a dance movement called “Kalocsai mars”. Therefore, 11 dancers’ motion (5 female and 6 male; age: 20.5 ± 2.5 years; height: 173.82 ± 7.82 cm; weight: 64.77 ± 8.67 kg) was recorded with an optical-based motion capture system and force platforms simultaneously. Before and after the dancing session, static balancing tests were performed, examining bipedal stance with eyes opened and closed conditions. The ANOVA results showed that the values of the range of motions of the knee joint flexion-extension angles and hip flexion averaged for sessions increased significantly (p=0.044, p=0.003, p=0.005) during the dancing sessions. The deviation in the joint angle was greater in the nondominant legs, suggesting that the nondominant side requires more attention to execute the dance steps correctly. The results of the balance tests showed that the oscillation in the posterior direction increased significantly after dancing (p=0.023). In comparison, the visual feedback had no significant effect on the dancers’ balancing ability.
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