Search results for "SPACE"

Sedentary Patterns and Sit-to-Stand Transitions in Open Learning Spaces and Conventional Classrooms among Primary School Students

2022

Educational reforms worldwide have resulted in schools increasingly incorporating open and flexible classroom designs that may provide possibilities to reduce sedentary behavior among students during lessons. Cross-sectional associations of classroom type on accelerometry assessed sedentary bout durations and sit-to-stand transitions were investigated in 191 third and fifth grade students recruited from one school with open learning spaces and two schools with conventional classrooms. A three-way ANOVA for classroom type, gender and grade level indicated that students in open learning spaces had more 1-to-4-min sedentary bouts (mean difference 1.8 bouts/h, p 10-min sedentary bouts (median 0…

Co-sensing and co-shaping as shared and relational practices in bringing about relational leaders in higher education

2021

AbstractThe aim of this article is to investigate how and what kinds of relational and shared practices were co-created within a multicultural team in a higher education collaborative learning environment. The students interacted while working towards the shared goal of co-constructing knowledge. The study provides insight into how student teams can actively build collaboration in learning spaces through manifesting relational leadership. Shared and relational practices refer broadly to all the knowledge, attitudes and skills that emerge from team interaction. A compound theoretical framework combining relational leadership and leadership trichotomy was adapted to study what particular fact…

Optical turbulence measurements and channel modeling of an indoor Free Space Optics link (Versione estesa)

2014

In this work, we propose an indoor experimental set-up able to generate several optical turbulence conditions in a Free Space Optics link. Using this set-up, we prove the effectiveness of an irradiance time-series generator based on the Gamma-Gamma model and able to predict the irradiance fluctuations at the receiver, under both weak and moderate turbulence conditions.

FREE SPACE OPTICS LINKS AFFECTED BY OPTICAL TURBULENCE: CHANNEL MODELING, MEASUREMENTS AND CODING TECHNIQUES FOR ERROR MITIGATION

2014

FSO is an optical wireless line-of-sight communication system able to offer good broadband performance, electromagnetic interference immunity, high security, license-free operation, low power consumption, ease of relocation, and straightforward installation. It represents a modern technology, significantly functional when it is impossible, expensive or complex to use physical connections or radio links. Unfortunately, since the transmission medium in a terrestrial FSO link is the air, these communications are strongly dependent on various atmospheric phenomena (e.g., rain, snow, optical turbulence and, especially, fog) that can cause losses and fading. Therefore, in worst-case conditions, i…

Optical turbulence measurements and channel modeling of an indoor Free Space Optics link (Abstract)

2014

Prawo kosmiczne w kontekście trzech reżimów prawnych. Jedność celów czy egoizm interesów?

2021

W artykule zaprezentowano aktualne kwestie związane z wykorzystaniem przestrzeni kosmicznej wraz ze wskazaniem konieczności przestrzegania obowiązujących regulacji, współtworzących międzynarodowe prawo kosmiczne. Zaprezentowano swego rodzaju proces ‒ ewolucję wykorzystywania przestrzeni kosmicznej, począwszy od monopolu państw, przez zdefiniowane wolą państw działania organizacji międzynarodowych, kończąc na narodowych agencjach kosmicznych, będących instytucjonalnym wsparciem również dla prywatnych podmiotów. W pracy, adekwatnie do wykazanej wielopodmiotowości, prezentuje się regulacje prawne, w których pierwsze konwencje, umowy z lat 60. i 70. XX w., współtworzące międzynarodowe prawo kos…

The variance of the ℓnp-norm of the Gaussian vector, and Dvoretzky's theorem

2018

Let n be a large integer, and let G be the standard Gaussian vector in Rn. Paouris, Valettas and Zinn (2015) showed that for all p∈[1,clogn], the variance of the ℓnp-norm of G is equivalent, up to a constant multiple, to 2ppn2/p−1, and for p∈[Clogn,∞], to (logn)−1. Here, C,c>0 are universal constants. That result left open the question of estimating the variance for p logarithmic in n. In this paper, the question is resolved by providing a complete characterization of Var∥G∥p for all p. It is shown that there exist two transition points (windows) in which the behavior of Var∥G∥p changes significantly. Some implications of the results are discussed in the context of random Dvoretzky's theore…

Common fixed points in ordered Banach spaces

2008

In this paper we introduce the notion of g-weak isotone mappings in an ordered Banach space and we extend some common fixed point theorems of Dhage, O’Regan and Agarwal

Liminaalitilan käsite työn muutosten jäsentäjänä

2013

Liminaalitila on antropologiassa määritelty välitilaksi, kynnyksellä olemiseksi. Liminaalisuus on nykypäivän työelämälle ominainen piirre, joka voi näyttäytyä kaaoksena, mutta myös uutta luovana muutosvaiheena.

Archicottura: architettura e pratiche sociali

2020

In una realtà interattiva e reattiva non stupisce il crescente interesse per la relazione tra architettura e pratiche sociali (Archi_Cottura). Delle molteplici declinazioni in cui il rapporto può essere inteso è utile soffermarsi, fra ‘cose’ e ‘dispositivi’, sui luoghi e gli spazi che individuano delle diverse potenzialità identitarie. Architettura e pratiche sociali intrattengono un legame più profondo se li consideriamo come forme di interpretazione del rapporto fra la memoria ancestrale dell’uomo e il dinamismo spaziale che si coagula in idee e azioni di progetto. Trovandoci nell’era della domotica questa tensione ermeneutica del costruire viene controbilanciata, all’interno dell’organis…