WorldCat Identities

Hilke, Maren

Overview
Works: 15 works in 21 publications in 2 languages and 147 library holdings
Roles: Author, Editor, Contributor
Publication Timeline
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Most widely held works by Maren Hilke
Kinderschutz in der Pflegekinderhilfe Bedeutung und Herausforderungen für die Fremdpflege und die Verwandtenpflege by Monika Althoff( Book )

7 editions published between 2015 and 2021 in German and held by 87 WorldCat member libraries worldwide

Die Pflegekinderhilfe ist mit ihrer familiären Betreuungsform in der Kinder- und Jugendhilfe unverzichtbar. Kinder, die nicht mehr bei ihren leiblichen Eltern leben können, wachsen für einen begrenzten Zeitraum in einer Pflegefamilie auf. Pflegeeltern müssen die Bedürfnisse der Kinder wahrnehmen und den immer komplexeren und vielfältigeren Erziehungsanforderungen gerecht werden. Trotzdem gelingt es nicht immer, dass Pflegefamilien sich zu einem schützenden und fördernden Ort für Kinder entwickeln. Es gibt Fälle, in denen Pflegekinder nach ihren Erfahrungen in den Herkunftsfamilien in den Pflegefamilien erneut Vernachlässigung und Gewalt ausgesetzt sind. Diese Publikation nimmt das Thema Kinderschutz in der Pflegefamilie in den Fokus und beschreibt die Aufgaben der Fachkräfte.Zudem zeigt das Buch auf, dass gute Rahmenbedingungen und die Anerkennung dieser Hilfeform für die Pflegekinderhilfe nicht nur unerlässlich sind, sondern gleichzeitig den Kinderschutz gelingen lassen
The new diversity of family life in Europe : mobile ethnic groups and flexible boundaries( Book )

1 edition published in 2017 in English and held by 27 WorldCat member libraries worldwide

The authors focus on families who organize their lives in transnational social spaces within and at the outer borders of Europe, to offer a new perspective on transnational family life and to advance the knowledge on borders drawn by social inequality, discrimination and political exclusion. They also discuss social mobility as inheriting different life worlds, while crossing borders. The research on the socialization of children, raised in different societies provides a better understanding of the new generations in Europe from the beginning of the XXI c. The variety of methods presented in this book is also a contribution to link Western and Eastern European perspectives as well as sociology and anthropology in order to capture a wider spectrum of social reality. Contents • Transnational Family Life • Urban Sociology • European Sociology Target Groups • Researchers and students in the social sciences, migration research, social work, anthropology and sociology • Practitioners in the field of migration, family, community and social work The Editors Dr. Banu Çıtlak, Assoc. Prof., University of Applied Science and Arts Dortmund, Germany. Dr. Sebastian Kurtenbach, research assistant, Institute of Interdisciplinary Research on Conflict and Violence (IKG), Bielefeld University, Germany. Megan Lueneburg, fulbright researcher, architect, curator, University of Plovdiv, Bulgaria. Dr. Meglena Zlatkova, Assoc. Prof., Department of Ethnology, University of Plovdiv, Bulgaria
WIE ARME KINDER DIE UNTERSTADT ERLEBEN Ungleiche Kindheiten und städtischer Raum in Oberhausen und Windhoek Maren by Maren Hilke( )

1 edition published in 2013 in German and held by 16 WorldCat member libraries worldwide

Schwerpunkt: Das Kind im Mittelpunkt( Book )

1 edition published in 2017 in German and held by 7 WorldCat member libraries worldwide

Experimental evidence for a two-dimensional quantized Hall insulator by M Hilke( )

1 edition published in 1998 in Undetermined and held by 1 WorldCat member library worldwide

Quite generally, an insulator is theoretically defined by a vanishing conductivity tensor at the absolute zero of temperature. In classical insulators, such as band insulators, vanishing conductivities lead to diverging resistivities. In other insulators, in particular when a high magnetic field (B) is added, it is possible that while the magneto-resistance diverges, the Hall resistance remains finite, which is known as a Hall insulator. In this letter we demonstrate experimentally the existence of another, more exotic, insulator. This insulator, which terminates the quantum Hall effect series in a two-dimensional electron system, is characterized by a Hall resistance which is approximately quantized in the quantum unit of resistance h/e^2. This insulator is termed a quantized Hall insulator. In addition we show that for the same sample, the insulating state preceding the QHE series, at low-B, is of the HI kind
Symmetry in the insulator-quantum-Hall-insulator transitions observed in a Ge/SiGe quantum well by M Hilke( )

1 edition published in 1997 in Undetermined and held by 1 WorldCat member library worldwide

We examine the magnetic-field-driven insulator-quantum-Hall-insulator transitions of the two-dimensional hole gas in a Ge/SiGe quantum well. We observe direct transitions between low and high magnetic-field insulators and the (Formula presented) quantum Hall state. With increasing magnetic field, the transitions from insulating to quantum Hall and quantum Hall to insulating are very similar with respect to their transport properties. We address the temperature dependence around the transitions and show that the characteristic energy scale for the high-field transition is larger. © 1997 The American Physical Society
Symmetry in the insulator-quantum-Hall-insulator transitions observed in a Ge/SiGe quantum well by M Hilke( )

1 edition published in 1997 in Undetermined and held by 1 WorldCat member library worldwide

We examine the magnetic-field-driven insulator-quantum-Hall-insulator transitions of the two-dimensional hole gas in a Ge/SiGe quantum well. We observe direct transitions between low and high magnetic-field insulators and the (Formula presented) quantum Hall state. With increasing magnetic field, the transitions from insulating to quantum Hall and quantum Hall to insulating are very similar with respect to their transport properties. We address the temperature dependence around the transitions and show that the characteristic energy scale for the high-field transition is larger. © 1997 The American Physical Society
Semicircle: An exact relation in the integer and fractional quantum Hall effect by M Hilke( )

1 edition published in 1999 in Undetermined and held by 1 WorldCat member library worldwide

We present experimental results on the quantized Hall insulator in two dimensions. This insulator, with vanishing conductivities, is characterized by the quantization (within experimental accuracy) of the Hall resistance in units of the quantum unit of resistance, h/e2. The measurements were performed in a two-dimensional hole system, confined in a Ge/SiGe quantum well, when the magnetic field is increased above the ν = 1 quantum Hall state. This quantization leads to a nearly perfect semicircle relation for the diagonal and Hall conductivities. Similar results are obtained with a higher-mobility n-type modulation-doped GaAs/AlGaAs sample, when the magnetic field is increased above the ν = 1/3 fractional quantum Hall state
The Quantized Hall Insulator: A New Insulator in Two-Dimensions by M Hilke( )

1 edition published in 1998 in Undetermined and held by 1 WorldCat member library worldwide

Quite generally, an insulator is theoretically defined by a vanishing conductivity tensor at the absolute zero of temperature. In classical insulators, such as band insulators, vanishing conductivities lead to diverging resistivities. In other insulators, in particular when a high magnetic field (B) is added, it is possible that while the magneto-resistance diverges, the Hall resistance remains finite, which is known as a Hall insulator. In this letter we demonstrate experimentally the existence of another, more exotic, insulator. This insulator, which terminates the quantum Hall effect series in a two-dimensional electron system, is characterized by a Hall resistance which is approximately quantized in the quantum unit of resistance h/e^2. This insulator is termed a quantized Hall insulator. In addition we show that for the same sample, the insulating state preceding the QHE series, at low-B, is of the HI kind
ISA-Jahrbuch zur Sozialen Arbeit 2015 Schwerpunkt <em>Partizipation</em>( Book )

1 edition published in 2016 in German and held by 1 WorldCat member library worldwide

Localization and delocalization for strong disorder in one-dimensional continuous potentials( )

1 edition published in 2015 in English and held by 1 WorldCat member library worldwide

Abstract: In one-dimension and for discrete uncorrelated random potentials, such as tight binding models, all states are localized for any disorder strength. This is in contrast to continuous random potentials, where we show here that regardless of the strength of the random potential, we have delocalization in the limit where the roughness length goes to zero. This result was obtained by deriving an expression for the localization length valid for all disorder strengths. We solved a nonlinear wave equation, whose average over disorder yields the localization properties of the desired linear wave equation. Our results, not only explain the origin of the difficulty to observe localization in certain physical systems, but also show that maximum localization occurs when the roughness length is comparable to the wavelength, which is relevant to many experiments in a random medium
Phase diagram of the integer quantum Hall effect in p-type germanium by M Hilke( )

1 edition published in 2000 in Undetermined and held by 1 WorldCat member library worldwide

We experimentally study the phase diagram of the integer quantized Hall effect, as a function of density and magnetic field. We used a two-dimensional hole system confined in a Ge/SiGe quantum well, where all energy levels are resolved, because the Zeeman splitting is comparable to the cyclotron energy. At low fields and close to the quantum Hall liquid-to-insulator transition, we observe the floating up of the lowest energy level due to the disorder broadening, but no floating of any higher levels, rather a merging of these levels into the insulating state. For a given filling factor, only direct transitions between the insulating phase and higher quantum Hall liquids are observed as a function of density. Finally, we observe a peak in the critical resistivity around a filling factor of 1
Phase diagram of the integer quantum Hall effect in p-type germanium by M Hilke( )

1 edition published in 2000 in Undetermined and held by 1 WorldCat member library worldwide

We experimentally study the phase diagram of the integer quantized Hall effect, as a function of density and magnetic field. We used a two-dimensional hole system confined in a Ge/SiGe quantum well, where all energy levels are resolved, because the Zeeman splitting is comparable to the cyclotron energy. At low fields and close to the quantum Hall liquid-to-insulator transition, we observe the floating up of the lowest energy level due to the disorder broadening, but no floating of any higher levels, rather a merging of these levels into the insulating state. For a given filling factor, only direct transitions between the insulating phase and higher quantum Hall liquids are observed as a function of density. Finally, we observe a peak in the critical resistivity around a filling factor of 1
Experimental evidence for a two-dimensional quantized hall insulator by M Hilke( )

1 edition published in 1998 in English and held by 0 WorldCat member libraries worldwide

 
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Kinderschutz in der Pflegekinderhilfe Bedeutung und Herausforderungen für die Fremdpflege und die Verwandtenpflege
Covers
The new diversity of family life in Europe : mobile ethnic groups and flexible boundaries
Alternative Names
Hilke, M.

Languages
German (11)

English (3)