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  <doc>
    <id>2061</id>
    <completedYear/>
    <publishedYear>1997</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>232</pageFirst>
    <pageLast>234</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1-4</issue>
    <volume>1</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Observability of the acoustic plasma mode in double-layered quantum dots</title>
    <abstract language="eng">Double-layered quantum dots represent a novel realization of a multi-component plasma system. By modelling the system and applying classical concepts we investigate the oscillator strength of the acoustic plasma mode and its dependence on the system parameters. In view of recent experimental results, we discuss the observability of this collective excitation.</abstract>
    <parentTitle language="eng">Physica E: Low-dimensional Systems and Nanostructures</parentTitle>
    <identifier type="doi">10.1016/S1386-9477(97)00048-9</identifier>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <author>Oliver Mayrock</author>
    <author>Sergej A. Mikhailov</author>
    <author>Oliver Steffens</author>
    <author>Ulrich Rössler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Quantum dots</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Collective excitations</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Magneto-plasmon</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Acoustic modes</value>
    </subject>
    <collection role="institutes" number="FakANK">Fakultät Angewandte Natur- und Kulturwissenschaften</collection>
    <collection role="othpublikationsherkunft" number="">Externe Publikationen</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
  </doc>
  <doc>
    <id>1663</id>
    <completedYear/>
    <publishedYear>2020</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue>October</issue>
    <volume>224</volume>
    <type>article</type>
    <publisherName>Elsevier</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2021-04-15</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Infrared Reflective Wall Paint in Buildings: Energy Saving Potentials and Thermal Comfort</title>
    <abstract language="eng">The reduction of the energy demand of existing buildings is the main objective of building refurbishment. Managing the heat radiation properties of the wall construction is a possible way to develop highly effective and resource efficient insulation materials and concepts. The application of infrared reflective wall paints and coatings has been studied since the latter half of the 20th century. A brief review of the literature gives an account of the current research status. One has to realise that the conclusions are not uniformly consistent but depend strongly on the specific boundary conditions and investigated parameters. The study presented here discusses the usage of infrared reflective wall paint in conjunction with heat insulation for historic brick masonry. The possible energy savings are linked to the resulting thermal comfort. We identify critical parameters that must be taken into account when using infrared reflective wall paint and derive recommended design rules for the refurbishment of such building types. The findings prove that infrared reflective wall paint can decrease heat losses by 18% and up to 22% if comfort conditions are considered. Increasing energy savings can also cause the negative effect of high radiative asymmetry. Thus, each configuration must be observed in detail.</abstract>
    <parentTitle language="eng">Energy and Buildings</parentTitle>
    <identifier type="doi">10.1016/j.enbuild.2020.110212</identifier>
    <identifier type="issn">0378-7788</identifier>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <licence>Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG</licence>
    <author>Sebastian Malz</author>
    <author>Walter Krenkel</author>
    <author>Oliver Steffens</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Infrared-reflective</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Wall paint</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Coating</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Existing buildings</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Radiative asymmetry</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Energy efficiency</value>
    </subject>
    <collection role="institutes" number="FakANK">Fakultät Angewandte Natur- und Kulturwissenschaften</collection>
    <collection role="othforschungsschwerpunkt" number="16312">Energie und Mobilität</collection>
    <collection role="institutes" number="">Labor Bauphysik</collection>
  </doc>
  <doc>
    <id>1664</id>
    <completedYear/>
    <publishedYear>2019</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>797</pageFirst>
    <pageLast>806</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2021-04-15</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Electricity Load Forecasting - An Evaluation of Simple 1D-CNN Network Structures</title>
    <abstract language="eng">This paper presents a convolutional neural network (CNN)which can be used for forecasting electricity load profiles 36 hours intothe future. In contrast to well established CNN architectures, the inputdata is one-dimensional. A parameter scanning of network parameters isconducted in order to gain information about the influence of the kernelsize,  number  of  filters,  and  dense  size.  The  results  show  that  a  goodforecast quality can already be achieved with basic CNN architectures.The  method  works  not  only  for  smooth  sum  loads  of  many  hundredconsumers, but also for the load of apartment buildings</abstract>
    <parentTitle language="eng">International Conference on Time Series and Forecasting (ITISE 2019), Proceedings of Papers Vol. 2, 25-27 September 2019, Granada (Spain)</parentTitle>
    <identifier type="url">https://arxiv.org/abs/1911.11536</identifier>
    <identifier type="url">http://itise.ugr.es/ITISE2019_vol2.pdf</identifier>
    <identifier type="isbn">978-84-17970-78-9</identifier>
    <identifier type="urn">urn:nbn:de:bvb:898-opus4-16649</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <author>Christian Lang</author>
    <author>Florian Steinborn</author>
    <author>Oliver Steffens</author>
    <author>Elmar Wolfgang Lang</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>energy load forecasting</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>STLF</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>neural networks</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>CNN</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>con-volutional networks</value>
    </subject>
    <collection role="ddc" number="004">Datenverarbeitung; Informatik</collection>
    <collection role="institutes" number="FakANK">Fakultät Angewandte Natur- und Kulturwissenschaften</collection>
    <collection role="othforschungsschwerpunkt" number="16312">Energie und Mobilität</collection>
    <collection role="institutes" number="">Labor Bauphysik</collection>
    <thesisPublisher>Ostbayerische Technische Hochschule Regensburg</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-oth-regensburg/files/1664/Electricity_Load_Forecasting.pdf</file>
  </doc>
  <doc>
    <id>2054</id>
    <completedYear/>
    <publishedYear>2017</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>135</pageFirst>
    <pageLast>143</pageLast>
    <pageNumber/>
    <edition/>
    <issue>2</issue>
    <volume>39</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>2017-04-03</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Integrale Bauforschung und simulationsgestützte Analysen zur Wahrung historischer Bausubstanz am Beispiel der Asamkirche St. Georg zu Weltenburg</title>
    <abstract language="deu">Die Klosterkirche St. Georg zu Weltenburg an der Donau, spätbarockes Hauptwerk der Brüder Asam und bayerische Welterbestätte, musste sich aufgrund ihrer topographisch, geologisch und klimatisch exponierten Lage in der Vergangenheit tiefgreifenden Instandsetzungsmaßnahmen unterziehen. Um der hygrischen Problematik im Inneren des Kirchenraumes zu begegnen, wurde ein außergewöhnlicher Sanierungsansatz verfolgt, dessen bauphysikalische und raumklimatische Verifizierung im Rahmen dieses Forschungsprojektes durchgeführt wird. Dabei steht die Optimierung des Raumklimas im Zentrum der Untersuchungen. Ganzheitlich betrachtet stellt sich die Frage: Welche Maßnahmen dürfen – bei Bewahrung der denkmalgeschützten Bausubstanz – ergriffen werden, um eine nachhaltige Nutzung historischer Bauwerke zu ermöglichen und dabei die Anforderungen der heutigen Zeit zu erfüllen?</abstract>
    <parentTitle language="deu">Bauphysik</parentTitle>
    <additionalTitle language="eng">Conservation of historic building fabric through integrated building research and digital simulation tools. The Asam-Church St. Georg in Weltenburg, Bavaria, Germany</additionalTitle>
    <identifier type="doi">10.1002/bapi.201710016</identifier>
    <identifier type="issn">0171-5445</identifier>
    <identifier type="urn">urn:nbn:de:bvb:898-opus4-20540</identifier>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <licence>Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG</licence>
    <author>Johannes Stierstorfer</author>
    <author>Felix Wellnitz</author>
    <author>Oliver Steffens</author>
    <collection role="ddc" number="726">Gebäude für religiöse und verwandte Zwecke</collection>
    <collection role="institutes" number="FakANK">Fakultät Angewandte Natur- und Kulturwissenschaften</collection>
    <collection role="othforschungsschwerpunkt" number="16313">Gebäude und Infrastruktur</collection>
    <collection role="institutes" number="">Labor Bauphysik</collection>
    <thesisPublisher>Ostbayerische Technische Hochschule Regensburg</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-oth-regensburg/files/2054/Stierstorfer_Integrale_Bauforschung.pdf</file>
  </doc>
  <doc>
    <id>2087</id>
    <completedYear/>
    <publishedYear>1999</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>3891</pageFirst>
    <pageLast>3894</pageLast>
    <pageNumber/>
    <edition/>
    <issue>19</issue>
    <volume>82</volume>
    <type>article</type>
    <publisherName>American Physical Society</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Novel spin features in Raman spectra of few-electron quantum dots</title>
    <abstract language="eng">We employ a self-consistent, dynamic spin-density functional concept beyond the dipole approximation in order to calculate the collective modes of few-electron quantum dots with partial spin polarization. Because of Hund's rule in a magnetic field the mode energies exhibit characteristic discontinuities in their magnetic-field dependence, which is a manifestation of ground-state transitions between different spin configurations. A finite ground-state spin density couples collective charge- and spin-density excitations. We predict their observability in state-of-the-art Raman experiments.</abstract>
    <parentTitle language="eng">Physical Review Letters</parentTitle>
    <identifier type="doi">10.1103/PhysRevLett.82.3891</identifier>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <author>Oliver Steffens</author>
    <author>Michael Suhrke</author>
    <collection role="ddc" number="530">Physik</collection>
    <collection role="institutes" number="FakANK">Fakultät Angewandte Natur- und Kulturwissenschaften</collection>
    <collection role="othpublikationsherkunft" number="">Externe Publikationen</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="institutes" number="">Labor Bauphysik</collection>
  </doc>
  <doc>
    <id>2049</id>
    <completedYear/>
    <publishedYear>1999</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>111</pageFirst>
    <pageLast>120</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>39</volume>
    <type>bookpart</type>
    <publisherName>Friedr. Vieweg &amp; Sohn</publisherName>
    <publisherPlace>Braunschweig</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2007-06-25</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Ground state and collective excitations of quantum dots: Correlation effects and Hund’s rule in magnetic field</title>
    <abstract language="eng">We review ground-state properties and collective excitations of semiconductor quantum dots in a magnetic field obtained from current-spin density-functional theory. Due to exchange-correlation, a generalized Hund’s rule in magnetic field can be established which leads to spin alignment in partially occupied energy shells at the Fermi energy. This results, in distinct spin structures in single-electron addition spectra. Current-dependent exchange-correlation modifies the magnetic-field dependence of the ground state configuration and leads to deviations from plain spin-density calculations. Moreover it gives rise to spontaneous current textures at zero magnetic field. Collective excitation spectra, explicitly calculated for inelastic light scattering, exhibit novel features in their magnetic field dependence due to a finite ground-state spin density.</abstract>
    <parentTitle language="eng">Advances in Solid State Physics</parentTitle>
    <identifier type="isbn">978-3-540-44553-1</identifier>
    <identifier type="doi">10.1007/BFb0107469</identifier>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <author>Oliver Steffens</author>
    <author>Michael Suhrke</author>
    <author>Ulrich Rössler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Spin Density</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Fermi Energy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Collective Excitation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Addition Spectrum</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Inelastic Light Scattering</value>
    </subject>
    <collection role="ddc" number="530">Physik</collection>
    <collection role="institutes" number="FakANK">Fakultät Angewandte Natur- und Kulturwissenschaften</collection>
    <collection role="othpublikationsherkunft" number="">Externe Publikationen</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="institutes" number="">Labor Bauphysik</collection>
  </doc>
  <doc>
    <id>3104</id>
    <completedYear/>
    <publishedYear>2017</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>135</pageFirst>
    <pageLast>143</pageLast>
    <pageNumber/>
    <edition/>
    <issue>2</issue>
    <volume>39</volume>
    <type>article</type>
    <publisherName>ERNST &amp; SOHN</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Conservation of historic building fabric through integrated building research and digital simulation</title>
    <abstract language="eng">The abbey of Weltenburg monastery, a late baroque icon, designed by the Asam brothers and today's world heritage, has been subject to a constant need for repair and restoration due to its geological, climatological, and exposed location on the banks of the river Danube. To solve the hygric problems within the church, an exceptional restoration concept has been executed in the last decade. This research project analyses and verifies the building-physical and indoor climatic effects of the restoration measures with focus on the improvement of the central space climate. With this case study the question is raised whether appropriate measures exist that allow a contemporary and sustainable usage of historic buildings with respect to the preservation of the historic building fabric.</abstract>
    <parentTitle language="eng">Bauphysik</parentTitle>
    <identifier type="doi">10.1002/bapi.201710016</identifier>
    <enrichment key="opus.import.date">2022-03-17T06:05:16+00:00</enrichment>
    <enrichment key="opus.source">sword</enrichment>
    <enrichment key="opus.import.user">importuser</enrichment>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <licence>Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG</licence>
    <author>Johannes Stierstorfer</author>
    <author>Felix Wellnitz</author>
    <author>Oliver Steffens</author>
    <collection role="institutes" number="FakANK">Fakultät Angewandte Natur- und Kulturwissenschaften</collection>
    <collection role="othforschungsschwerpunkt" number="16313">Gebäude und Infrastruktur</collection>
    <collection role="institutes" number="">Labor Bauphysik</collection>
  </doc>
  <doc>
    <id>2652</id>
    <completedYear/>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>22</pageLast>
    <pageNumber/>
    <edition/>
    <issue>3</issue>
    <volume>11</volume>
    <type>article</type>
    <publisherName>MDPI</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Experimental and Numerical Study on the Heat Transfer Characteristics of a Newly-Developed Solar Active Thermal Insulation System</title>
    <abstract language="eng">A newly-developed solar active thermal insulation system (SATIS) is introduced with the main objective to accomplish a highly-dependent total solar transmittance on the irradiation angle. SATIS is also designed to obtain the maximum transmittance at a prescribed design irradiation angle and to reduce it remarkably at higher irradiation angles. A purely mineral thermal insulation plaster with micro hollow glass spheres is applied to manufacture the investigated SATIS prototype. Light-conducting elements (LCEs) have been introduced into SATIS and suitable closing elements have been applied. The SATIS prototype has been investigated both experimentally and numerically. It turned out that the contributions of conduction, radiation and convection to the effective thermal conductivity of SATIS, without the closing elements (49 mWmK), amount to 86.2%, 13.2% and 0.6%, respectively. The angle-dependent short-wave radiation exchange within the LCE has been investigated via ray tracing. At the incidence angle of 19% (design angle), 27% of the radiation within the LCE is absorbed by the absorber plate, resulting in measured and computed total solar energy transmittances of 11.2%/11.7%, respectively. For a typical summer irradiation angle of 60%, 98% of the incident radiation is absorbed by the surfaces at the entrance of the LCE. The corresponding total solar energy transmittance amounts to 2.9%.</abstract>
    <parentTitle language="eng">Buildings</parentTitle>
    <identifier type="doi">10.3390/buildings11030123</identifier>
    <note>Corresponding author: Belal Dawoud</note>
    <enrichment key="opus.import.date">2022-01-28T13:58:12+00:00</enrichment>
    <enrichment key="opus.source">sword</enrichment>
    <enrichment key="opus.import.user">importuser</enrichment>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Peter Steininger</author>
    <author>Matthias Gaderer</author>
    <author>Oliver Steffens</author>
    <author>Belal Dawoud</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>angle-dependent total solar energy transmittance</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>effective thermal conductivity</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>experimental investigation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>numerical simulation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>ray tracing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>solar active thermal insulation system (SATIS)</value>
    </subject>
    <collection role="institutes" number="FakANK">Fakultät Angewandte Natur- und Kulturwissenschaften</collection>
    <collection role="institutes" number="FAKMB">Fakultät Maschinenbau</collection>
    <collection role="oaweg" number="">Gold Open Access- Erstveröffentlichung in einem/als Open-Access-Medium</collection>
    <collection role="othforschungsschwerpunkt" number="16313">Gebäude und Infrastruktur</collection>
    <collection role="oaweg" number="">Corresponding author der OTH Regensburg</collection>
    <collection role="institutes" number="">Labor Bauphysik</collection>
  </doc>
  <doc>
    <id>5543</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>12</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>278</volume>
    <type>article</type>
    <publisherName>Elsevier</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2022-11-03</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Improvements for building-performance simulations by a comparative finite-element method analysis</title>
    <abstract language="eng">This paper presents a method to improve building-performance simulations (BPS) by the comparison and analysis of different approaches based on finite-element method (FEM) models. The lumped parameter method (LPM) is used in several BPS programs and tools. It has the advantage of fast computing times and comparably good accuracy for thermal and energy loads. With the help of detailed FEM simulations, it is possible to further improve the degree of detail and accuracy while maintaining the high simulation speed.&#13;
&#13;
In this work, we compare time-dependent results for local temperatures in a generic reference room within a given periode of time. In a second step, the differences between the models with respect to various physical effects are analyzed and used to introduce additional equations into the LPM model in order to improve its accuracy. Thus, we discuss potentials for improvement for BPS and demonstrate a method of a practical implementation.&#13;
&#13;
The results show minor differences of less than 0.1 K for radiation and heat transfer, so their level of detail in BPS is appropriate. In these terms, no improvements were pursued within the work. However, the FEM simulation is capable of calculating the internal convective heat transfer and thermal bridges more accurately due to the use of computational fluid dynamics (CFD) and the geometrically precise representation of the FEM model. Here, deviations of up to 1 K in room temperature (convective heat transfer) and up to 0.5 K in wall temperatures (thermal bridges) were pointed out.&#13;
&#13;
By improving the LPM with equations obtained from the FEM, these deviations can be reduced to less than 0.2 K, which is a considerable improvement in accuracy.</abstract>
    <parentTitle language="eng">Energy and Buildings</parentTitle>
    <identifier type="doi">10.1016/j.enbuild.2022.112563</identifier>
    <note>Corresponding author: Dragos Paul Schoplocher</note>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
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    <enrichment key="CorrespondingAuthor">Dragos Paul Schoplocher</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Paul Dragos Schloplocher</author>
    <author>Stefan Ettengruber</author>
    <author>Oliver Steffens</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Lumped parameter model</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Finite-element method</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Building performance simulation</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="FakANK">Fakultät Angewandte Natur- und Kulturwissenschaften</collection>
    <collection role="othforschungsschwerpunkt" number="16313">Gebäude und Infrastruktur</collection>
    <collection role="oaweg" number="">Hybrid Open Access - OA-Veröffentlichung in einer Subskriptionszeitschrift/-medium</collection>
    <collection role="oaweg" number="">Corresponding author der OTH Regensburg</collection>
    <collection role="institutes" number="">Labor Bauphysik</collection>
  </doc>
  <doc>
    <id>2050</id>
    <completedYear/>
    <publishedYear>1998</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>3859</pageFirst>
    <pageLast>3872</pageLast>
    <pageNumber/>
    <edition/>
    <issue>17</issue>
    <volume>10</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">From the two-dimensional electron gas to antidot superlattices: Magnetoresistance effects in the transition regime</title>
    <abstract language="eng">Magnetoresistance measurements and theoretical calculations for two-dimensional electron systems under a perpendicular magnetic field are presented which illuminate transport effects due to a periodic electrostatic potential modulation. We focus on features arising from the resolution of the magnetic miniband structure which are beyond the perturbative regime governed by the dispersion of Landau bands. Our non-perturbative quantum-mechanical calculations reveal that the dispersion of individual minibands is responsible for the complicated behaviour of the magnetoresistance in the regime of intermediate modulation strength. In particular, the interplay between miniband and scattering contributions to the conductivity leads to an almost structureless magnetoresistance in this regime followed by the formation of antidot peaks due to the miniband conductivity.</abstract>
    <parentTitle language="eng">Journal of Physics: Condensed Matter</parentTitle>
    <identifier type="doi">10.1088/0953-8984/10/17/016</identifier>
    <identifier type="issn">0953-8984</identifier>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <author>Oliver Steffens</author>
    <author>Tilman Schlösser</author>
    <author>Peter Rotter</author>
    <author>Klaus Ensslin</author>
    <author>Michael Suhrke</author>
    <author>Jörg Kotthaus</author>
    <author>Ulrich Rössler</author>
    <author>M. Holland</author>
    <collection role="ddc" number="530">Physik</collection>
    <collection role="institutes" number="FakANK">Fakultät Angewandte Natur- und Kulturwissenschaften</collection>
    <collection role="othpublikationsherkunft" number="">Externe Publikationen</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="institutes" number="">Labor Bauphysik</collection>
  </doc>
  <doc>
    <id>2085</id>
    <completedYear/>
    <publishedYear>1998</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>147</pageFirst>
    <pageLast>151</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>256-258</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Shell structure and exchange-related spin effects for quantum dots in a magnetic field</title>
    <abstract language="eng">Ground-state calculations based on current spin density-functional theory for circular parabolic quantum dots are presented which reveal interesting spin effects in dependence on an external magnetic field: Hund's first rule (well-known from atomic physics for zero magnetic field) is related to the level occupancy near the Fermi energy and determines the spin configuration of the ground state in finite magnetic field. Consequently, the addition spectrum of the quantum dot exhibits a specific non-monotonous dependence on magnetic field, which is visible in recent quantum transport experiments.</abstract>
    <parentTitle language="deu">Physica B</parentTitle>
    <identifier type="doi">10.1016/S0921-4526(98)00557-2</identifier>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <author>Oliver Steffens</author>
    <author>Michael Suhrke</author>
    <author>Ulrich Rössler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Quantum dot</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Current spin density-functional theory</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Exchange correlation</value>
    </subject>
    <collection role="ddc" number="530">Physik</collection>
    <collection role="institutes" number="FakANK">Fakultät Angewandte Natur- und Kulturwissenschaften</collection>
    <collection role="othpublikationsherkunft" number="">Externe Publikationen</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="institutes" number="">Labor Bauphysik</collection>
  </doc>
  <doc>
    <id>2081</id>
    <completedYear/>
    <publishedYear>1998</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>529</pageFirst>
    <pageLast>534</pageLast>
    <pageNumber/>
    <edition/>
    <issue>5</issue>
    <volume>42</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Generalized Hund's rule in the addition spectrum of a quantum dot</title>
    <abstract language="eng">We report on ground-state calculations based on current-spin density-functional theory for circular parabolic quantum dots. Hund's first rule, well-known from atomic physics, applies not only at zero magnetic field; analogous rules, related to the level occupancy near the Fermi energy, determine the spin configuration of the ground state in finite magnetic field. Consequently, the addition spectrum of the quantum dot exhibits a specific non-monotonous dependence on magnetic field. We discuss our results with focus on recent experiments which may already contain indications of this new feature.</abstract>
    <parentTitle language="eng">EPL (Europhysics Letters)</parentTitle>
    <identifier type="doi">10.1209/epl/i1998-00276-4</identifier>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <author>Oliver Steffens</author>
    <author>Ulrich Rössler</author>
    <author>Michael Suhrke</author>
    <collection role="ddc" number="530">Physik</collection>
    <collection role="institutes" number="FakANK">Fakultät Angewandte Natur- und Kulturwissenschaften</collection>
    <collection role="othpublikationsherkunft" number="">Externe Publikationen</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="institutes" number="">Labor Bauphysik</collection>
  </doc>
  <doc>
    <id>2086</id>
    <completedYear/>
    <publishedYear>1998</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>222</pageFirst>
    <pageLast>228</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>44</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Spontaneously-broken time-reversal symmetry in quantum dots</title>
    <abstract language="eng">We present current-spin density-functional calculations for circular parabolic quantum dots in zero magnetic field. We find the possibility for broken time-reversal symmetry via exchange correlation with spontaneously induced orbital currents. For certain electron numbers, this results in new current textures which give rise to a finite magnetization even for ground states with vanishing total angular momentum.</abstract>
    <parentTitle language="eng">EPL (Europhysics Letters)</parentTitle>
    <identifier type="doi">10.1209/EPL/I1998-00460-0</identifier>
    <identifier type="issn">1286-4854</identifier>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <author>Oliver Steffens</author>
    <author>Michael Suhrke</author>
    <author>Ulrich Rössler</author>
    <collection role="ddc" number="530">Physik</collection>
    <collection role="institutes" number="FakANK">Fakultät Angewandte Natur- und Kulturwissenschaften</collection>
    <collection role="othpublikationsherkunft" number="">Externe Publikationen</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="institutes" number="">Labor Bauphysik</collection>
  </doc>
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