Suche
Anzeige der Dokumente 4321-4330 von 5758
Preprint
Mining association rules in folksonomies
(2006)
Social bookmark tools are rapidly emerging on the Web. In such systems users are setting up lightweight conceptual structures called folksonomies. These systems provide currently relatively few structure. We discuss in this paper, how association rule mining can be adopted to analyze and structure folksonomies, and how the results can be used for ontology learning and supporting emergent semantics. We demonstrate our approach on a large scale dataset stemming from an online system.
Dissertation
Fabrication and Investigation of Diamond Membranes for Photonic Nanostructures
(2023)
Due to its exceptional physical and chemical characteristics, diamond in a form of thin membranes is a particularly promising material for the fabrication of high-quality photonic devices. Especially for envisioned applications in quantum information technologies and communication, diamond gained, as a host material, an ever-increasing scientific interest based on remarkable properties of different color centers in its crystal lattice, e.g. nitrogen-vacancy centers, serving as single-photon emitters. As a high index ...
Working paper
Handlungsleitfaden zur Klimaneutralität im Bereich Mobilität für die Stadt Kassel
(2023)
Der Handlungsleitfaden zeigt Wege zur Klimaneutralität der Stadt Kassel im Bereich Mobilität auf. Es werden konkrete Maßnahmen vorgeschlagen und anhand ihres Wirkungspotenzials zur Treibhausgasminderung, des Zeitraums zu ihrer Umsetzung sowie ihrer Bedeutung für die Akzeptanz und für das Zusammenwirken in Kombination mit anderen Maßnahmen bewertet und priorisiert.
Working paper
Environmental Tax Reform in Latin America
(2023)
• Latin American countries need to implement an agenda of green tax reforms to adapt their current development path and better respond to climate change. The decarbonization of the energy matrix is essential to mitigate future challenges.
• These governments have the potential to raise environmentally oriented taxes to generate additional revenues. Objective should be to adapt to the energy transition, attenuate extractivism and promote better income distribution and growth.
• The design and implementation of green ...
Buch
Suizidprävention Deutschland
(Deutsche Akademie für Suizidprävention e.V. (DASP), 2021-08)
In jedem Jahr sterben in Deutschland mehr als 9.000 Menschen durch Suizid. Durch jeden Suizid sind mittelbar mehr als 100.000 weitere Menschen betroffen. Vor diesem Hintergrund hat das Bundesministerium für Gesundheit Mittel für ein Projekt zur Verfügung gestellt, um eine Grundlage für die weitere Entwicklung der Suizidprävention zu gewinnen. Das Projektziel war die Erstellung eines wissenschaftlich fundierten umfassenden Berichts zur Suizidproblematik, der Suizidprävention und deren Perspektiven in Deutschland. Der ...
Aufsatz
Novel Class of Rhenium Borides Based on Hexagonal Boron Networks Interconnected by Short B₂ Dumbbells
(2022-09-06)
Transition metal borides are known due to their attractive mechanical, electronic, refractive, and other properties. A new class of rhenium borides was identified by synchrotron single-crystal X-ray diffraction experiments in laser-heated diamond anvil cells between 26 and 75 GPa. Recoverable to ambient conditions, compounds rhenium triboride (ReB₃) and rhenium tetraboride (ReB₄) consist of close-packed single layers of rhenium atoms alternating with boron networks built from puckered hexagonal layers, which link ...
Aufsatz
A new method for microscale cyclic crack growth characterization from notched microcantilevers and application to single crystalline tungsten and a metallic glass
(2022-06-22)
The lifetime of most metals is limited by cyclic loads, ending in fatigue failure. The progressive growth of cracks ends up in catastrophic failure. An advanced method is presented for the determination of cyclic crack growth on the microscale using a nanoindenter, which allows the characterization of > 10,000 loading cycles. It uses focused ion beam fabricated notched microcantilevers. The method has been validated by cyclic bending metallic glass and tungsten microcantilevers. The experiments reveal a stable crack ...
Video
PAISAJE Y TERRITORIO EN EL PERÚ
(2022-04-02)
Partiendo de la formación de una sensibilidad para con los paisajes culturales, se identifican y analizan los principales paisajes culturales y el desarrollo territorial en el Perú.
Siguen travesías teóricas dedicadas a la arquitectura y el paisaje: ¿qué hace allí la arquitectura? ¿Qué nos quieren decir las representaciones líticas del valle del Sondondo? ¿Qué es lo transcendental de la arquitectura del paisaje inca?
José Canziani Amico
Arquitecto y urbanista por la Universidad de Florencia, Italia
Doctor por ...
Video
LA VIVIENDA VIRREINAL CUSQUEÑA
(2021-12-04)
El entendimiento de la arquitectura civil doméstica como fenómeno de adaptación a lo preexistente y la continuidad cronológica de ocupación, con sus propias condicionantes y particularidades físicas, espaciales y tecnológico constructivas, provocando modelos propios, simbólicos e identitarios.
Yadira Guerra Vera
Arquitecta por la Universidad Nacional San Antonio de Abad del Cusco, UNSAAC
Maestría en Gestión del Patrimonio Cultural, Centros y Sitios Históricos por la UNSAAC Especialización en conservación de ...
Dissertation
Downscaling and Modeling the Effects of Climate Change on Hydrology and Water Resources in the Upper Blue Nile River Basin, Ethiopia
(2013-05-17)
The Upper Blue Nile River Basin (UBNRB) located in the western part of Ethiopia, between 7° 45’ and 12° 45’N and 34° 05’ and 39° 45’E has a total area of 174962 km2 . More than 80% of the population in the basin is engaged in agricultural activities. Because of the particularly dry climate in the basin, likewise to most other regions of Ethiopia, the agricultural productivity depends to a very large extent on the occurrence of the seasonal rains. This situation makes agriculture highly vulnerable to the impact of ...