Search results for "Cone"
showing 10 items of 772 documents
Some new extensions of Edelstein-Suzuki-type fixed point theorem to G-metric and G-cone metric spaces
2013
Abstract In this paper, we prove some fixed point theorems for generalized contractions in the setting of G -metric spaces. Our results extend a result of Edelstein [M. Edelstein, On fixed and periodic points under contractive mappings, J. London Math. Soc., 37 (1962), 74–79] and a result of Suzuki [T. Suzuki, A new type of fixed point theorem in metric spaces, Nonlinear Anal., 71 (2009), 5313–5317]. We prove, also, a fixed point theorem in the setting of G -cone metric spaces.
"Belye lilii" : genezis finskogo mifa v bolgarii, rol' russkogo fennofil'stva, finsko-bolgarskie kontakty i posredniki s konca XIX do konca XX veka
2004
Liilia Siibergin väitöstyössä osoitetaan, miten suomalaisista on kirjallisuuden kautta Bulgariassa tullut sankareita, joita kohtaan tunnetaan erityistä sympatiaa. Samalla suomalaisista sinkoutuu pois kaikki, mikä voisi viitata epätäydellisyyteen. – Emme enää voi puhua stereotypiasta, vaan kyseessä on kansallismyytti, Siiberg toteaa. Bulgarialaisilla ei kuitenkaan ole erityisasemaa suomalaisten mielissä. Väitöskirjassa tarkastellaan Suomen ja Bulgarian välisten kulttuuri- ja kirjallisuussuhteiden syntymistä ja kehitystä sekä tutkitaan kanssakäymisen erityispiirteitä vertailevan kirjallisuustieteen ja kulttuurintutkimuksen näkökulmasta. Siibergin esittämä malli Suomen kansallismyytin syntymis…
Educación 2.0: Retos educativos en las sociedades hiperconectadas
2012
El primer volumen de esta colección reúne capítulos de investigadores de Iberoamérica. El libro inicia con un capítulo que analiza la globalización económica, y los retos de la educación y de las TIC. El segundo habla acerca del diseño de materiales aplicables al e-learning en la educación básica. El tercero se refiere al caso español y los resultados de la mezcla entre políticas públicas y TIC en las aulad de clase. A continuación se concentra en un estudio on-line sobre la responsabilidad social en los estudiantes iberoamericanos. Luego se habla sobre las e-competencias en educación para adultos y por último se trata sobre entornos inmersivos para la formación médica.
Vegetation of taluses and screes of the high montane and alpine zone in the Pamir Alai Mountains (Tajikistan, Middle Asia)
2015
This paper presents the results of phytosociological research on scree vegetation of the Pamir Alai Mts. In total, 128 phytosociological relevés were made during field studies conducted in 2012–2014, applying the Braun-Blanquet method. Plant communities of mobile and fairly stabilised scree of colluvial cones, aprons and fans, inhabiting mainly the high montane and alpine zone in several ranges (e.g.the Zeravshan, Hissar, Hazratishoh, Darvaz, Rushan and Vanch Mts) are herein described. A hierarchical syntaxonomic synopsis of scree communities at montane and alpine elevations in the Pamir Alai Mts is provided. The collected vegetation samples represent the majority of the variations among th…
Vegetation Diversity of Screes and Taluses of The Pamir and South-Western Tian Shan in Middle Asia
2021
AbstractThis paper presents the results of phytosociological research on scree vegetation of the Pamir and south-western Tian Shan. We collected 222 phytosociological relevés during field studies conducted in 2015–2019, applying the Braun-Blanquet approach. We identified 21 plant communities on mobile and stabilized screes of colluvial cones, aprons and fans, inhabiting mainly the montane and alpine belts in several ranges (e.g. Peter the First, Alichur, Shugnan, Shachdarian, Darvaz, Rushan, Vanch, Fergana, Kyrgyz and Terskey ranges). As a result we provide the first comprehensive hierarchical syntaxonomic synopsis of scree communities at montane and alpine elevations in the eastern Middle …
A historical account on characterizations ofC1-manifolds in Euclidean spaces by tangent cones
2014
Abstract A historical account on characterizations of C 1 -manifolds in Euclidean spaces by tangent cones is provided. Old characterizations of smooth manifold (by tangent cones), due to Valiron (1926, 1927) and Severi (1929, 1934) are recovered; modern characterizations, due to Gluck (1966, 1968) and Tierno (1997) are restated. All these results are consequences of the Four-cones coincidence theorem due to [1] .
The Use of Silicones as Extractants of Biologically Active Substances from Vegetable Raw Materials
2021
Based on theoretical studies, the authors of this paper propose the use of cosmetic organosilicon polymers (commonly called silicones) for the extraction of a complex of biologically active substances contained in vegetable raw materials. It is important to note that the biological molecules do not interact with the organosilicones and, therefore, their properties are not altered after the extraction. In this work, we investigate the efficiency of several polyorganosiloxanes as extractants of vegetable raw materials (Calendula Officialis L. and Artemisia Absinthium L.) useful for the preparation of cosmetic emulsions. Specifically, the extraction studies were conducted by using polyorganosi…
Validación de la aplicación del modelo TPACK para la formación del profesorado en TIC
2015
La formación de los docentes para la utilización de las Tecnologías de la Información y la Comunicación (TIC) es hoy una necesidad incuestionable si queremos incorporarlas de manera educativa y significativa a los procesos de enseñanza aprendizaje, y no meramente como un añadido que funcione independiente del resto de variables curriculares (contenidos, estrategias, metodologías,..). La incorporación de las TIC al desarrollo profesional de los docentes se ve afectado por elementos tan peculiares como los diversos tipos de conocimientos que el docente posee. El diseño del modelo TPACK (conocimientos tecnológicos, pedagógicos y de contenidos), formulado fundamentalmente por Koehler y Mishra (…
Technology as an influential variable in the development of dialogical learning
2021
Schools have a responsibility to prepare new generations born in a globalized and interconnected world. The main objective of this paper is to analyze the role that technology plays in the development of dialogical learning in learning communities. We try to understand the influence that technology has in fostering communication and interaction in an educational project that presents interaction and words as basic learning tools. An instrumental, interpretive, and embedded case study is applied in which the communicative methodology is developed from interviews and two discussion groups. The singular case involves a rural school constituted as a learning community that is geographically spl…
Expression of MAP1a and MAP1b in the ganglionic eminence and the internal capsule of the human fetal brain.
2001
The expression of microtubule-associated proteins 1a and 1b (MAP1a and 1b) were investigated in two transient structures, the ganglionic eminence (GE) being a prominent part of the telencephalic proliferative zone and the perireticular nucleus (PR) within the internal capsule (IC). Anti-MAP1a immunolabels PR neurons from 18 weeks of gestation (wg) onwards, whereas anti-MAP1b immunolabels long IC fibers between 18 and 22 wg. MAP1b is further present in thalamic fibers that seem to terminate at the medial margin of the GE, in a moderate number of cells of the GE and its medial extension, the gangliothalamic body (GTB). From 26 to 33 wg MAP1b is expressed in short fiber bundles of the IC, a fe…