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Leveraging large-deviation statistics to decipher the stochastic properties of measured trajectories
(2021)
Extensive time-series encoding the position of particles such as viruses, vesicles, or individualproteins are routinely garnered insingle-particle tracking experiments or supercomputing studies.They contain vital clues on how viruses spread or drugs may be delivered in biological cells.Similar time-series are being recorded of stock values in financial markets and of climate data.Such time-series are most typically evaluated in terms of time-averaged mean-squareddisplacements (TAMSDs), which remain random variables for finite measurement times. Theirstatistical properties are different for differentphysical stochastic processes, thus allowing us toextract valuable information on the stochastic process itself. To exploit the full potential of thestatistical information encoded in measured time-series we here propose an easy-to-implementand computationally inexpensive new methodology, based on deviations of the TAMSD from itsensemble average counterpart. Specifically, we use the upper bound of these deviations forBrownian motion (BM) to check the applicability of this approach to simulated and real data sets.By comparing the probability of deviations fordifferent data sets, we demonstrate how thetheoretical bound for BM reveals additional information about observed stochastic processes. Weapply the large-deviation method to data sets of tracer beads tracked in aqueous solution, tracerbeads measured in mucin hydrogels, and of geographic surface temperature anomalies. Ouranalysis shows how the large-deviation properties can be efficiently used as a simple yet effectiveroutine test to reject the BM hypothesis and unveil relevant information on statistical propertiessuch as ergodicity breaking and short-time correlations.
Stereoselective [4+2] Cycloaddition of Singlet Oxygen to Naphthalenes Controlled by Carbohydrates
(2021)
Stereoselective reactions of singlet oxygen are of current interest. Since enantioselective photooxygenations have not been realized efficiently, auxiliary control is an attractive alternative. However, the obtained peroxides are often too labile for isolation or further transformations into enantiomerically pure products. Herein, we describe the oxidation of naphthalenes by singlet oxygen, where the face selectivity is controlled by carbohydrates for the first time. The synthesis of the precursors is easily achieved starting from naphthoquinone and a protected glucose derivative in only two steps. Photooxygenations proceed smoothly at low temperature, and we detected the corresponding endoperoxides as sole products by NMR. They are labile and can thermally react back to the parent naphthalenes and singlet oxygen. However, we could isolate and characterize two enantiomerically pure peroxides, which are sufficiently stable at room temperature. An interesting influence of substituents on the stereoselectivities of the photooxygenations has been found, ranging from 51:49 to up to 91:9 dr (diastereomeric ratio). We explain this by a hindered rotation of the carbohydrate substituents, substantiated by a combination of NOESY measurements and theoretical calculations. Finally, we could transfer the chiral information from a pure endoperoxide to an epoxide, which was isolated after cleavage of the sugar chiral auxiliary in enantiomerically pure form.
Stereoselective [4+2] Cycloaddition of Singlet Oxygen to Naphthalenes Controlled by Carbohydrates
(2021)
Stereoselective reactions of singlet oxygen are of current interest. Since enantioselective photooxygenations have not been realized efficiently, auxiliary control is an attractive alternative. However, the obtained peroxides are often too labile for isolation or further transformations into enantiomerically pure products. Herein, we describe the oxidation of naphthalenes by singlet oxygen, where the face selectivity is controlled by carbohydrates for the first time. The synthesis of the precursors is easily achieved starting from naphthoquinone and a protected glucose derivative in only two steps. Photooxygenations proceed smoothly at low temperature, and we detected the corresponding endoperoxides as sole products by NMR. They are labile and can thermally react back to the parent naphthalenes and singlet oxygen. However, we could isolate and characterize two enantiomerically pure peroxides, which are sufficiently stable at room temperature. An interesting influence of substituents on the stereoselectivities of the photooxygenations has been found, ranging from 51:49 to up to 91:9 dr (diastereomeric ratio). We explain this by a hindered rotation of the carbohydrate substituents, substantiated by a combination of NOESY measurements and theoretical calculations. Finally, we could transfer the chiral information from a pure endoperoxide to an epoxide, which was isolated after cleavage of the sugar chiral auxiliary in enantiomerically pure form.
Digitale Forschungsdaten gewinnen zunehmend an Bedeutung und stellen neue Herausforderungen an wissenschaftliche Einrichtungen und ihre Forschenden. Der Begriff Forschungsdatenmanagement umfasst alle Aktivitäten, die mit der Aufbereitung, Speicherung, Archivierung und Veröffentlichung von Forschungsdaten verbunden sind. Da der Umgang mit Forschungsdaten generische, fachliche, rechtliche und technische Aspekte betrifft, erfordert es eine Begleitung der Forschenden durch ein umfangreiches Spektrum an Services, von Information und Beratung bis hin zu fachspezifischen Standards und IT-Infrastrukturen.
Im vorliegenden Bericht werden zunächst die Ausgangslage und die Begrifflichkeiten rund um Forschungsdatenmanagement geklärt und anschließend die wichtigsten nationalen und internationalen Strategien und Entwicklungen vorgestellt. Dabei bilden Richtlinien und Empfehlungen für Forschungsdaten(management) den Handlungsrahmen für alle Beteiligte hin zu einem nachhaltigen Forschungsdatenmanagement. Bundeslandinitiativen schaffen die Grundlage und unterstützen den Kulturwandel zu offenen Daten.
Eine Forschungsdaten-Strategie für Brandenburg muss die Bedeutung von digitalen Forschungsdaten als wissenschaftliches Gut in den Vordergrund stellen, indem dafür das Bewusstsein geschaffen wird und konkrete Vorgaben und Leitlinien auf Landes- und Einrichtungsebene vereinbart werden. Gute wissenschaftliche Praxis wird durch eine geeignete Infrastruktur unterstützt, welche die heterogenen Bedarfe und Voraussetzungen aller Beteiligten berücksichtigt. Ziele sollten die Institutionalisierung von Forschungsdatenmanagement an den Hochschulen und Kooperationen zwischen den Einrichtungen Brandenburgs sein.
Nicht im Trüben fischen
(2021)
Nicht im Trüben fischen
(2021)
The experimental literature on antitrust enforcement provides robust evidence that communication plays an important role for the formation and stability of cartels. We extend these studies through a design that distinguishes between innocuous communication and communication about a cartel, sanctioning only the latter. To this aim, we introduce a participant in the role of the competition authority, who is properly incentivized to judge communication content and price setting behavior of the firms. Using this novel design, we revisit the question whether a leniency rule successfully destabilizes cartels. In contrast to existing experimental studies, we find that a leniency rule does not affect cartelization. We discuss potential explanations for this contrasting result.
Das Rahmenkonzept der Universitätsschule Potsdam beschreibt die Wertegrundlage und das pädagogisch-didaktische sowie das wissenschaftliche Fundament einer zu gründenden Universitätsschule Potsdam. Wie andere Universitätsschulen soll sich auch diese Schule durch eine enge und institutionalisierte Beziehung zwischen Schule und Universität auszeichnen, die den ständigen Wissenstransfer zwischen Schulpraxis, Wissenschaft, Lehrkräftebildung und Schulverwaltung unterstützt. Das Rahmenkonzept legt die Grundlagen für eine inklusive Schule, deren Schüler:innen einen Querschnitt der Gesellschaft abbilden, und die in ungleichheitssensiblen Bildungsangeboten alle Bildungsabschlüsse des Landes Brandenburg anbietet. Die Universitätsschule soll den starken Segregationsprozessen in Potsdam entgegenwirken.
Im Leitbild werden die Grundwerte (Nachhaltigkeit, Inklusion und Bildungsgerechtigkeit, Menschenrechte und Demokratie, Gemeinschaft, Ganzheitlichkeit) und die Bildungsziele (Transferfähigkeit, kritisch-reflexives Denken und lebensbegleitendes Lernen, Diversitätsbewusstsein und Transkulturalität, Selbstkompetenz und Beziehungskompetenz, Kulturtechniken und digitale Kompetenz) der Universitätsschule dargestellt. Das Pädagogische Konzept veranschaulicht, wie Werte und Bildungsziele in den Bereichen Schulform, Schulkultur, Lernkultur sowie Lernorte und Lernumgebung ausgestaltet werden können. Schließlich wird die Universitätsschule als lernende und lehrende Institution beschrieben, die ein Ort des Transfers von Bildungsinnovationen ist. Dafür soll eine Transferwerkstatt in der Schule verankert werden, die den Wissensaustausch der schulrelevanten Akteur:innen unterstützt und gestaltet.
Mehr Schein als Sein
(2021)
In this paper I am concerned with the idiomatic constructions fr. avoir l'air (de) and sp. tener el aire (de). I describe these form-function pairs from a constructionist perspective and analyze them as cases of evidential strategies in French and Spanish.
Die ersten 40 Rechtsprofessoren der Viadrina immatrikulierten sich von 1506 bis 1571 in Frankfurt an der Oder. Sie lassen sich in zwei Gruppen einteilen, die von der Gründung der Universität 1506 bis 1539 Immatrikulierten und die nach Einführung der Reformation im Kurfürstentum Brandenburg 1539/40 bis zum Regierungsantritt des Kurfürsten Johann Georg von Brandenburg 1571 an der Viadrina eingeschriebenen Juristen. Die Profile der vorreformatorischen und der nachreformatorischen Rechtsexperten weisen Gemeinsamkeiten, z.B. die Eheschließung, aber auch Unterschiede auf. Am besten illustriert das Beispiel der Rechtsprofessorendynastien Zoch und Köppen die "Familienuniversität" Viadrina.
Mildred Harnack, geb. Fish, stammte ursprünglich aus Milwaukee, Wisconsin. Zusammen mit ihrem Ehemann Arvid Harnack zog sie nach Deutschland und lebte seit 1930 in Berlin. Hier lehrte die Literaturwissenschaftlerin an der Friedrich-Wilhelms-Universität (heute Humboldt-Universität) und am Berliner Abendgymnasium (heute Peter A. Silbermann-Schule). Bereits kurz nach der Machtübernahme von Adolf Hitler hatte sich um das Ehepaar Harnack ein Kreis von Freunden gebildet, der gegen die Herrschaft der Nationalsozialisten opponierte. Dazu zählten auch Karl Behrens und Bodo Schlösinger, die beide Schüler Mildred Harnacks am Berliner Abendgymnasium waren. Mildred Harnack konnte mit Hilfe ihrer Kontakte zur amerikanischen Botschaft ihren Schülern im nationalsozialistischen Deutschland ansonsten nicht zugängliche Informationen besorgen.
Aufgrund von Funkkontakten des Freundeskreises zur Sowjetunion wurde die Gruppe von den Nationalsozialisten Rote Kapelle genannt – „rot“ bezog sich auf deren linke Haltung und mit „Kapelle“ wurden Funker assoziiert, die wie Pianisten in einer Kapelle spielen. Der Berliner Oppositionszirkel umfasste bis zu seiner Zerschlagung durch die Nationalsozialisten etwa 150 Personen verschiedenster Berufsgruppen, unterschiedlicher parteipolitischer Einstellungen und Konfessionen. Die Gruppe verfertigte oppositionelle Flugblätter und lieferte Informationen an die amerikanische Botschaft sowie an die Sowjetunion. Mildred Harnack wurde – wie viele ihrer Mitstreiterinnen und Mitstreiter – nach ihrer Verhaftung vom Reichskriegsgericht zum Tode verurteilt und am 16. Februar 1943 in Plötzensee guillotiniert.
In diesem Band stellen Studierende der Universität Potsdam sowie Hörerinnen und Hörer der Peter A. Silbermann-Schule (Berlin) nach einem kurzen Überblick zum Widerstand gegen den Nationalsozialismus in Deutschland das Netzwerk der Roten Kapelle sowie die Biographien von Mildred Harnack und ihren Schülern Karl Behrens und Bodo Schlösinger vom Berliner Abendgymnasium eindrücklich vor.
Настоящий научно-практический комментарий и перевод Уголовного уложения Федеративной Республики Германия не ограничивается собственно трансформацией текста основного уголовного закона Германии на русский язык. Руководствуясь принципами функционального перевода, автор посредством точного и систематического перевода доводит до сведения читателя смысл уголовно-правовых норм. Научно-практический комментарий к Уголовному уложению Германии представляет собой постатейный комментарий, учитывающий как мнение законодателя, так и мнение правоприменительной практики Федерального Верховного суда и высших Земельных судов Германии, а также немецкой юридической доктрины по основным проблемам уголовного права. Необходимое внимание было уделено также дополнительному уголовному праву и уголовно-процессуальным проблемам. Таким образом, задачей настоящего издания является предоставить читателю возможность правильного языкового понимания и юридического толкования уголовно-правовых норм Германии.
Вступительная статья «Введение в уголовное право Германии» содержит общий обзор немецкого уголовного права. Особое внимание уделено развитию и источникам уголовного законодательства, а также доктрине уголовного права ФРГ.
Книга может заинтересовать практиков и правоведов, а также всех, кто в своей профессиональной деятельности или в процессе обучения сталкивается с уголовным правом Германии.
The present study aims to identify the optimal body-size/shape and maturity characteristics associated with superior fitness test performances having controlled for body-size, sex, and chronological-age differences. The sample consisted of 597 Tunisian children (396 boys and 201 girls) aged 8 to 15 years. Three sprint speeds recorded at 10, 20 and 30 m; two vertical and two horizontal jump tests; a change-of-direction and a handgrip-strength tests, were assessed during physical-education classes. Allometric modelling was used to identify the benefit of being an early or late maturer. Findings showed that being tall and light is the ideal shape to be successful at most physical fitness tests, but the height-to-weight “shape” ratio seems to be test-dependent. Having controlled for body-size/shape, sex, and chronological age, the model identified maturity-offset as an additional predictor. Boys who go earlier/younger through peak-height-velocity (PHV) outperform those who go at a later/older age. However, most of the girls’ physical-fitness tests peaked at the age at PHV and decline thereafter. Girls whose age at PHV was near the middle of the age range would appear to have an advantage compared to early or late maturers. These findings have important implications for talent scouts and coaches wishing to recruit children into their sports/athletic clubs.
The present study aims to identify the optimal body-size/shape and maturity characteristics associated with superior fitness test performances having controlled for body-size, sex, and chronological-age differences. The sample consisted of 597 Tunisian children (396 boys and 201 girls) aged 8 to 15 years. Three sprint speeds recorded at 10, 20 and 30 m; two vertical and two horizontal jump tests; a change-of-direction and a handgrip-strength tests, were assessed during physical-education classes. Allometric modelling was used to identify the benefit of being an early or late maturer. Findings showed that being tall and light is the ideal shape to be successful at most physical fitness tests, but the height-to-weight “shape” ratio seems to be test-dependent. Having controlled for body-size/shape, sex, and chronological age, the model identified maturity-offset as an additional predictor. Boys who go earlier/younger through peak-height-velocity (PHV) outperform those who go at a later/older age. However, most of the girls’ physical-fitness tests peaked at the age at PHV and decline thereafter. Girls whose age at PHV was near the middle of the age range would appear to have an advantage compared to early or late maturers. These findings have important implications for talent scouts and coaches wishing to recruit children into their sports/athletic clubs.
This study aimed to compare the training load of a professional under-19 soccer team (U-19) to that of an elite adult team (EAT), from the same club, during the in-season period. Thirty-nine healthy soccer players were involved (EAT [n = 20]; U-19 [n = 19]) in the study which spanned four weeks. Training load (TL) was monitored as external TL, using a global positioning system (GPS), and internal TL, using a rating of perceived exertion (RPE). TL data were recorded after each training session. During soccer matches, players’ RPEs were recorded. The internal TL was quantified daily by means of the session rating of perceived exertion (session-RPE) using Borg’s 0–10 scale. For GPS data, the selected running speed intensities (over 0.5 s time intervals) were 12–15.9 km/h; 16–19.9 km/h; 20–24.9 km/h; >25 km/h (sprint). Distances covered between 16 and 19.9 km/h, > 20 km/h and >25 km/h were significantly higher in U-19 compared to EAT over the course of the study (p = 0.023, d = 0.243, small; p = 0.016, d = 0.298, small; and p = 0.001, d = 0.564, small, respectively). EAT players performed significantly fewer sprints per week compared to U-19 players (p = 0.002, d = 0.526, small). RPE was significantly higher in U-19 compared to EAT (p = 0.001, d = 0.188, trivial). The external and internal measures of TL were significantly higher in the U-19 group compared to the EAT soccer players. In conclusion, the results obtained show that the training load is greater in U19 compared to EAT.
This study aimed to compare the training load of a professional under-19 soccer team (U-19) to that of an elite adult team (EAT), from the same club, during the in-season period. Thirty-nine healthy soccer players were involved (EAT [n = 20]; U-19 [n = 19]) in the study which spanned four weeks. Training load (TL) was monitored as external TL, using a global positioning system (GPS), and internal TL, using a rating of perceived exertion (RPE). TL data were recorded after each training session. During soccer matches, players’ RPEs were recorded. The internal TL was quantified daily by means of the session rating of perceived exertion (session-RPE) using Borg’s 0–10 scale. For GPS data, the selected running speed intensities (over 0.5 s time intervals) were 12–15.9 km/h; 16–19.9 km/h; 20–24.9 km/h; >25 km/h (sprint). Distances covered between 16 and 19.9 km/h, > 20 km/h and >25 km/h were significantly higher in U-19 compared to EAT over the course of the study (p = 0.023, d = 0.243, small; p = 0.016, d = 0.298, small; and p = 0.001, d = 0.564, small, respectively). EAT players performed significantly fewer sprints per week compared to U-19 players (p = 0.002, d = 0.526, small). RPE was significantly higher in U-19 compared to EAT (p = 0.001, d = 0.188, trivial). The external and internal measures of TL were significantly higher in the U-19 group compared to the EAT soccer players. In conclusion, the results obtained show that the training load is greater in U19 compared to EAT.
New cryogels for selective dye removal from aqueous solution were prepared by free radical polymerization from the highly water-soluble crosslinker N,N,N’,N’-tetramethyl-N,N’-bis(2-ethylmethacrylate)-propyl-1,3-diammonium dibromide and the sulfobetaine monomer 2-(N-3-sulfopropyl-N,N-dimethyl ammonium)ethyl methacrylate. The resulting white and opaque cryogels have micrometer sized pores with a smaller substructure. They adsorb methyl orange (MO) but not methylene blue (MB) from aqueous solution. Mixtures of MO and MB can be separated through selective adsorption of the MO to the cryogels while the MB remains in solution. The resulting cryogels are thus candidates for the removal of hazardous organic substances, as exemplified by MO and MB, from water. Clearly, it is possible that the cryogels are also potentially interesting for removal of other compounds such as pharmaceuticals or pesticides, but this must be investigated further.
New cryogels for selective dye removal from aqueous solution were prepared by free radical polymerization from the highly water-soluble crosslinker N,N,N’,N’-tetramethyl-N,N’-bis(2-ethylmethacrylate)-propyl-1,3-diammonium dibromide and the sulfobetaine monomer 2-(N-3-sulfopropyl-N,N-dimethyl ammonium)ethyl methacrylate. The resulting white and opaque cryogels have micrometer sized pores with a smaller substructure. They adsorb methyl orange (MO) but not methylene blue (MB) from aqueous solution. Mixtures of MO and MB can be separated through selective adsorption of the MO to the cryogels while the MB remains in solution. The resulting cryogels are thus candidates for the removal of hazardous organic substances, as exemplified by MO and MB, from water. Clearly, it is possible that the cryogels are also potentially interesting for removal of other compounds such as pharmaceuticals or pesticides, but this must be investigated further.
Recent trends in ubiquitous computing have led to a proliferation of studies that focus on human activity recognition (HAR) utilizing inertial sensor data that consist of acceleration, orientation and angular velocity. However, the performances of such approaches are limited by the amount of annotated training data, especially in fields where annotating data is highly time-consuming and requires specialized professionals, such as in healthcare. In image classification, this limitation has been mitigated by powerful oversampling techniques such as data augmentation. Using this technique, this work evaluates to what extent transforming inertial sensor data into movement trajectories and into 2D heatmap images can be advantageous for HAR when data are scarce. A convolutional long short-term memory (ConvLSTM) network that incorporates spatiotemporal correlations was used to classify the heatmap images. Evaluation was carried out on Deep Inertial Poser (DIP), a known dataset composed of inertial sensor data. The results obtained suggest that for datasets with large numbers of subjects, using state-of-the-art methods remains the best alternative. However, a performance advantage was achieved for small datasets, which is usually the case in healthcare. Moreover, movement trajectories provide a visual representation of human activities, which can help researchers to better interpret and analyze motion patterns.
The objective of this book is to provide ICAO, States, competent authorities and aerodrome operators with a comprehensive overview of legal challenges related to international aerodrome planning. Answers to derived legal questions as well as recommendations thereafter shall help to enhance regulatory systems and to establish a safer aerodrome environment worldwide. Compliant aerodrome planning has an immense impact on the safety of passengers, personnel, aircraft – and of course the airport. Achieving a high safety standard is crucial, as many incidents and accidents in aviation happen at or in the vicinity of airports. Currently, more than 40% of the ICAO Member States do not fully comply with international legal requirements for aerodrome planning. Representatives of ICAO and States, as well as aerodrome and authority personnel, will understand why compliance with the different legal facets of aerodrome planning is challenging and learn how shortcomings can be solved.
Breslau has been almost entirely forgotten in the Anglophone sphere as a place of Enlightenment. Moreover, in the context of the Jewish Enlightenment, Breslau has never been discussed as a place of intercultural exchange between German-speaking Jewish, Protestant and Catholic intellectuals. The story of Moses Hirschel offers us an excellent case-study to investigate the complex reciprocal relationship between Jewish and non-Jewish enlighteners in a prosperous and influential Central European city on the cusp of the 18th century.
Lauterkeitsrecht
(2021)
Das Wettbewerbsrecht ist vor allem im Gesetz gegen den unlauteren Wettbewerb (UWG) geregelt, das den Begriff der "Lauterkeit" zur Feststellung der Zulässigkeit eines Geschäftsgebahrens verwendet. Das Rechtsgebiet wird daher in Abgrenzung zum europäischen Wettbewerbsrecht, das kartellrechtliche Fragen betrifft, auch als Lauterkeitsrecht bezeichnet.
Von besonderer Bedeutung sind die Vorgaben der europäischen Richtlinie über unlautere Geschäftspraktiken (2005/29/EG), die es bei der Auslegung des UWG stets zu beachten gilt. Die Neuauflage bringt das Werk auf den aktuellen Stand von Gesetz, Rechtsprechung und Schrifttum. Dies betrifft insbesondere das Gesetz zur Stärkung des fairen Wettbewerbs sowie einige Grundsatzentscheidungen des EuGH (zB WRP 2018, 1304 - Autorita Garante della Concorrenza del Mercato/Tre Wind u.a. und WRP 2018, 1311 - Komisia za zashtita na potrebitelite/Evelina Kamenova) und des BGH zu § 3a UWG in Verbindung mit Art. 5 Abs. 1 S. 2 GG (BGH WRP 2019, 317 - Crailsheimer Stadtblatt II), § 5 Abs. 1 UWG (BGH WRP 2019, 883 - Prämiensparverträge), § 5a UWG (zB BGH WRP 2018, 65 - MeinPaket.de II und WRP 2018, 1335 - Werbeblocker II) und § 823 Abs. 1 BGB im Hinblick auf den Eingriff in das Recht am Unternehmen durch Zusenden von Werbe-E-Mails ohne Einwilligung des Empfängers (BGH WRP 2017, 700 - Einwilligung in E-Mail-Werbung).
Das Wettbewerbsrecht ist Gegenstand des Schwerpunktbereichsstudiums. Da sich die Materie vor allem aufgrund europäischer Einflüsse im ständigen Wandel befindet, ist das Bedürfnis an einem aktuellen, aber zugleich konsequent auf Studienbedürfnisse zugeschnittenen Lehrbuch groß.
Der Grundriss stellt das aktuelle Wettbewerbsrecht studiengerecht mit vielen Übersichten, Schemata, Beispielen und einer Übungsklausur mit Lösung dar.
Vorteile auf einen Blick
- kompakte Darstellung des geltenden Rechts
- mit vielen Einstiegsfällen und Beispielen
- vom Autor des Parallelwerks Kartellrecht in der Grundriss-Reihe
Zur Neuauflage
- Mit der 4. Auflage wird das Werk auf den neuesten Stand von Rechtsprechung und europäischen Entwicklungen gebracht. Es berücksichtigt insbesondere die UWG-Novelle 2015, die das UWG grundlegend verändert hat.
Zielgruppe
Für Studierende und alle, die sich auf einfache Weise in das Wettbewerbsrecht einarbeiten wollen.
Background/objective
Dry land-training (e.g., plyometric jump training) can be a useful mean to improve swimming performance. This study examined the effects of an 8-week plyometric jump training (PJT) program on jump and sport-specific performances in prepubertal female swimmers.
Methods
Twenty-two girls were randomly assigned to either a plyometric jump training group (PJTG; n = 12, age: 10.01 ± 0.57 years, maturity-offset = -1.50 ± 0.50, body mass = 36.39 ± 6.32 kg, body height = 146.90 ± 7.62 cm, body mass index = 16.50 ± 1.73 kg/m2) or an active control (CG; n = 10, age: 10.50 ± 0.28 years, maturity-offset = -1.34 ± 0.51, body mass = 38.41 ± 9.42 kg, body height = 143.60 ± 5.05 cm, body mass index = 18.48 ± 3.77 kg/m2). Pre- and post-training, tests were conducted for the assessment of muscle power (e.g., countermovement-jump [CMJ], standing-long-jump [SLJ]). Sport-specific-performances were tested using the timed 25 and 50-m front crawl with a diving-start, timed 25-m front crawl without push-off from the wall (25-m WP), and a timed 25-m kick without push-off from the wall (25-m KWP).
Results
Findings showed a significant main effect of time for the CMJ (d = 0.78), the SLJ (d = 0.91), 25-m front crawl test (d = 2.5), and the 25-m-KWP (d = 1.38) test. Significant group × time interactions were found for CMJ, SLJ, 25-m front crawl, 50-m front crawl, 25-m KWP, and 25-m WP test (d = 0.29–1.63) in favor of PJTG (d = 1.34–3.50). No significant pre-post changes were found for CG (p > 0.05).
Conclusion
In sum, PJT is effective in improving muscle power and sport-specific performances in prepubertal swimmers. Therefore, PJT should be included from an early start into the regular training program of swimmers.
Landesrecht Brandenburg
(2021)
Das Studienbuch stellt in übersichtlicher und systematischer Form die wichtigsten ausbildungsrelevanten Teile des brandenburgischen Verfassungs- und Verwaltungsrechts dar. Die Autoren gehen auf die für Examen und Praxis relevanten Kerngebiete (Verfassungsrecht, Verwaltungsorganisationsrecht, Kommunalrecht, Polizei- und Ordnungsrecht und Bauordnungsrecht) unter Einbeziehung von Rechtsprechung und Literatur ein. Zahlreiche Beispiele vereinfachen das Verständnis und Klausurhinweise schärfen den Blick für fehlerträchtige Fragestellungen.