Dvořák (Czechia)

# Presentation CPSS1: Spinal insufficiency fracture in the geriatric pediatric spine {#article-title-2} Regular corticosteroid has become standard for slowing disease progression in Duchenne muscular dystrophy (DMD). However, patients must contend with the insidious side effect of osteopenia and

This paper discusses an empirical refoundation of selected Greenbergian word order universals based on a data analysis of the Universal Dependencies project. The nature of the data we work on allows us to extract rich details for testing well-known typological universals and constitutes therefore a valuable basis for validating Greenberg's universals. Our results show that we can refine some Greenbergian universals in a more empirical and accurate way by means of a data-driven typological analysis.

Paper focuses on biomechanics, specifically on locking cortical bone screws in angularly stable plates used for the treatment of bone fractures in the medical fields of traumatology and orthopaedics. During extraction of titanium-alloy implants, problems are encountered in an effort to loosen some locking bone screws from the locking holes of an angularly stable plate and the subsequent stripping of the internal hexagon of the screw head. The self-locking of the screw-plate threaded joint was verified by calculation and the effect of the angle of the thread on the head of the locking cortical bone screw on self-locking was evaluated. The magnitude of the torque, causing the stripping of the internal hexagon (the Inbus type head) of a locking cortical bone screw with a shank diameter of 3.5 mm from Ti6Al4 V titanium alloy to ISO 5832-3, was determined experimentally. Also, it was experimentally found that the rotation of the screwdriver end with a hexagonal tip inside the locking cortical bone screw head during stripping of the internal hexagon causes strain of the screw head perimeter and thereby an increase of thread friction. The effect of tightening torque on the possibility of loosening of the locking cortical bone screw from the locking hole of an angularly stable plate was assessed experimentally. From the evaluation of five alternative shapes of locking cortical bone screw heads in terms of the acting stress and generated strains, it follows that the best screw is the screw with the Torx type head, which demonstrates the lowest values of reduced stress and equivalent plastic strain. Based on experiments and simulations the authors recommend that all global producers of locking cortical bone screws for locking holes of angularly stable plates use the Torx type heads, and not heads of the Inbus type or the Square, PH, PZ types.

The development of computers and artificial intelligence theory allow their application in the field of education. Intelligent tutoring systems reflect student learning styles and adapt the curriculum according to their individual needs. The building of intelligent tutoring systems requires not only the creation of suitable software, but especially the search and application of the rules enabling ICT to individually adapt the curriculum. The main idea of this paper is to attempt to specify the rules for dividing the students to systematically working students and more practically or pragmatically inclined students. The paper shows that monitoring the work of students in e-learning environment, analysis of various approaches to educational materials and correspondence assignments show different results for the defined groups of students.

Paired transactions or paired transfers have their origin in accountancy systems. The Resource-Event-Agent (REA) ontology uses paired transactions as a basic building block for business process modeling. A business process (REA model) is composed of two sets of paired transactions. REA itself originates from accountancy systems and has gradually developed into a full-fledged information system framework. REA model used to be depicted by ER diagrams and later by UML class diagrams. However, both these diagrams were not designed to capture conceptual models which are more precise, comprehensible for domain experts and easily to modify. ORM (Object Role Modeling) represents approach to conceptual modeling which fulfils above mentioned requirements. The main goal of the paper is to derive and describe the ORM model of paired transactions which corresponds to REA exchange model and assess this approach.

Abstrakt: Reformy založené na zavádění tržních principů do vzdělávání zatím spíše zklamaly očekávání, že povedou k celkovému zlepšení vzdělávacích výsledků žáků. Mezinárodní šetření PISA 2012 tento poznatek rovněž potvrdilo. Avšak v případě České republiky byly publikovány výsledky uvádějící, že i po zohlednění socioekonomických a demografických rozdílů mezi žáky a dalších relevantních faktorů na úrovni škol dosahují lepších výsledků v matematice žáci v těch školách, které jsou vystaveny větší lokální konkurenci. Náš článek představuje kritickou revizi těchto výsledků. Vyšli jsme ze stejných datových souborů z šetření PISA a použili jsme dvouúrovňové modely, kde první úroveň byla žákovská a druhá školní. Pokud model (na rozdíl od postupu uplatněného autory šetření PISA) zohledňovat skutečnost, že ve vzorku jsou zastoupeny základní školy, víceletá gymnázia a střední školy, pak zdánlivý účinek konkurence mezi školami vymizel. Konkurence mezi školami jednoho typu tedy ani v České republice nevede k lepším znalostem a dovednostem žáků v matematice. Klíčová slova: volba školy, konkurence mezi školami, výsledky žáků, matematika, Česká republika, PISA.Klíčová slova: volba školy, soutěž mezi školami, výsledky žáků, matematika, Česká republika, PISAAbstract: Several studies have shown that market-based reforms of education, on average, do not improve the pupil performance across or within national school systems. The PISA 2012 survey found, however, that in the Czech Republic the schools that compete with other neibourghing schools for pupils tend to perform better in mathematics even after accounting for the socio-economic and demographic background of pupils and for relevant school characteristics (OECD, 2013). In our study, we re-evaluate this result. The impact of school variables on student achievement was studied using the PISA datasets and two-level models with pupils at the first level and schools at the second level. After accounting for different types of secondary schools in the Czech school sample, the apparent positive effect of school competition disappeared.Keywords: school choice, school competition, achivement, mathematics, Czech Republic, PISA

Hybrid learning has become a widely exploited approach within the ICT-enhanced instruction. Making it flexible, so that the process of learning reflecting students’ needs and preferences was the problem solved in various ways at three Czech institutions of higher education. In the paper the whole process is described, describing the starting phase, which was identical at all three institutions, and comparing different models of flexible hybrid learning applied further, including the results of pedagogical experiments comparing learners’ knowledge in flexible and non-flexible learning. The results did not proved clearly visible differences, as neither world-recognized research did. Despite this, authors are persuaded that research activities in this field should go on, paying deeper attention to learners’ personal characteristics and other activities within the learning process.

This paper begins with an overview of education for teachers of the gifted. It then describes a one‐year project (1996) aimed at fostering fourth year Ostrava University undergraduates — future teachers' — creativity, and comparing the results with those of 1994 which had different students, syllabus and different circumstances (see High Ability Studies, 7, pp. 55–63). Based on the earlier results, a special syllabus was designed to develop the student's creativity components so that these might continue to develop autonomously. Final measurements showed considerable increases in creativity, and other benefits. This work confirmed the feasibility of creativity development through planned instruction, and new insight into the question of variability of creative components.