The 10 most recently published documents
Die Diversität innerhalb von Gesellschaften wird zunehmen – dafür sorgen Herausforderungen infolge der Globalisierung. Durch den demografischen sowie digitalen Wandel sehen sich Unternehmen mit steigenden Anforderungen ihrer Zielgruppen konfrontiert. Für ihre Wettbewerbsfähigkeit benötigen Organisationen die unterschiedlichen Kenntnisse und Fähigkeiten ihrer Mitarbeitenden. Je klüger sie diese Perspektivenvielfalt einsetzen, desto besser können sie sich am Markt behaupten. Dazu gehört, die eigene Belegschaft zu Perspektivwechseln zu befähigen. Gerade die Interne Kommunikation sollte diversitätssensibel gestaltet sein, um Perspektivenvielfalt im Unternehmen zu fördern. Durch die Erkenntnisse aus der Theorie ergibt sich ein neuer kommunikativer Ansatz auf Augenhöhe, der bisher wenig berücksichtigt wurde: Die diversitätssensible Interne Kommunikation. Zum Abschluss der Arbeit wird der Begriff nicht nur definiert, sondern vor allem ein Modell entwickelt, das die Bausteine diversitätssensibler Interner Kommunikation beinhaltet. Gerade die vier Instrumente persönliche Kommunikation, Dialogorientierung, Polyphonie sowie inklusive Sprache machen die Besonderheit des Ansatzes aus. Es geht dabei darum, wie die Interne Kommunikation ihren diversitätssensiblen Job gestalten muss. Hier wird vor allem die Strategie verändert. Ein Aspekt ist die Medienwahl, wobei sich im Kontext von Perspektivenvielfalt insbesondere die persönliche Kommunikation eignet sowie ein Wandel hin zu dialogorientierten Kommunikationsformen zu beobachten ist. Dialog meint hier nicht die klassische Informationsübermittlung, sondern das Verstehen anderer Perspektiven sowie das Hinterfragen des eigenen Standpunktes. Gerade Heterogenität und kontroverse Meinungen sind zuträglich für die Wandlungsfähigkeit des Unternehmens. Das Konzept der Polyphonie geht von Vielstimmigkeit im Unternehmen aus. Die Interne Kommunikation sollte mehrstimmig unterschiedliche Perspektiven einbeziehen. Weiterhin bedeutsam ist die gewählte Sprache, welche bestenfalls inklusiv sein sollte. Dies bedeutet, Kommunikator:innen sollten sich um einen gendergerechten, diskriminierungsfreien und barrierefreien Sprachgebrauch bemühen. Abschließend kann festgestellt werden, dass Perspektivenvielfalt auch in der Kommunikation von Unternehmen eine immer größere Rolle spielen wird. Deshalb wird es sich zukünftig für Kommunikator:innen lohnen, eine Kompetenz in dem Bereich aufzubauen. Denn: Vielfalt kann für Organisationen messbare Vorzüge bereitstellen, die sich positiv auf die unternehmerische Entwicklung auswirken.
Im Rahmen der zunehmenden Digitalisierung in Kulturerbeeinrichtungen gewinnt die Kontextualisierung digitaler Sammlungen mittels Linked Open Data (LOD) an Bedeutung. So auch für das Forschungsprojekt Moritz aus Buxtehude, in dem die historische Kleidersammlung des Moritz von Sachsen-Lauenburg interdisziplinär erforscht wird. Für die Kontextualisierung historischer Kleidung gibt es bisher jedoch keine etablierten Metadatenstandards oder Plattformen. Um eine niedrigschwellige Möglichkeit aufzuzeigen, wie Kulturerbeeinrichtungen die Metadaten ihrer Kleidungssammlungen als LOD veröffentlichen können, wird geprüft, inwiefern Wikidata sich hierfür anbietet. Dazu wird zunächst ein Wikidata-Schema für Kleidungsstücke entwickelt, welches anschließend durch die Erfassung von acht exemplarischen Objekten des Forschungsprojekts Moritz aus Buxtehude getestet und optimiert wird. Ergebnisse sind ein Wikidata-Property-Schema zur Erfassung von Kleidungsstücken, konkrete Handlungsempfehlungen für die Erfassung der weiteren Moritz-Objekte und ähnlicher Sammlungen, sowie Beispiele für Visualisierungen der kontextualisierten Objektdaten mit Hilfe von Wikidata. Die Ergebnisse der Arbeit zeigen, dass sich historische Kleidungsstücke mit geringem finanziellen, technischen und personellen Aufwand kontextualisieren lassen. Um das Potenzial voll auszuschöpfen, bedarf es allerdings weiterhin der engen Zusammenarbeit und des Engagements von Fachexpert:innen aus dem Kulturerbesektor und Informationswissenschaftler:innen bzw. der Wikidata-Community.
We describe an experimental approach to the determination of the nascent internal state distribution of gas-phase products of a gas–liquid interfacial reaction. The system chosen for study is O(³P) atoms with the surface of liquid deuterated squalane, a partially branched long-chain saturated hydrocarbon, C₃₀D₆₂. The nascent OD products are detected by laser-induced fluorescence. Both OD (v′=0) and (v′=1) were observed in significant yield. The rotational distributions in both vibrational levels are essentially the same, and are characteristic of a Boltzmann distribution at a temperature close to that of the liquid surface. This contrasts with the distributions in the corresponding homogeneous gas-phase reactions. We propose a preliminary interpretation in terms of a dominant trapping-desorption mechanism, in which the OD molecules are retained at the surface sufficiently long to cause rotational equilibration but not complete vibrational relaxation. The significant yield of vibrationally excited OD also suggests that the surface is not composed entirely of –CD₃ endgroups, but that secondary and/or tertiary units along the backbone are exposed.
Energy- and angle-resolved photofragment distributions for ground-state Cl (²P₃/₂) and spin–orbit excited Cl* (²P₁/₂) have been recorded using the velocity map imaging technique after photodissociation of chloroform at wavelengths of 193 and ∼235 nm. Translational energy distributions are rather broad and peak between 0.6 and 1.0 eV. The spin–orbit branching ratios [Cl*]/[Cl] are 1 and 0.3 at 193 and 235 nm, respectively, indicating the involvement of two or more excited state surfaces. Considering the anisotropy parameters and branching ratios collectively, we conclude that the reaction at 193 nm takes place predominantly on the ¹Q₁ surface, while the ³Q₁ surface gains importance at lower dissociation energies around 235 nm.
We have combined the velocity map imaging technique with time-of-flight measurements to study the surface photochemistry of KBr single crystals. This approach yields 3-dimensional velocity distributions of Br atoms resulting from 193 nm photodesorption. The velocity distributions indicate that at least two non-thermal mechanisms contribute to the photodesorption dynamics. Our experimental geometry also allows us to measure the Br(²P₃⁄₂):Br(²P₁⁄₂) branching ratio, which is found to be 24:1.
The effects of surface temperature on the gas-liquid interfacial reaction dynamics of O(³P)+squalane
(2005)
OH/OD product state distributions arising from the reaction of gas-phase O(³P) atoms at the surface of the liquid hydrocarbon squalane C₃₀H₆₂/C₃₀D₆₂ have been measured. The O(³P) atoms were generated by 355 nm laser photolysis of NO₂ at a low pressure above the continually refreshed liquid. It has been shown unambiguously that the hydroxyl radicals detected by laser-induced fluorescence originate from the squalane surface. The gas-phase OH/OD rotational populations are found to be partially sensitive to the liquid temperature, but do not adapt to it completely. In addition, rotational temperatures for OH/OD(v′=1) are consistently colder (by 34±5 K) than those for OH/OD(v′=0). This is reminiscent of, but less pronounced than, a similar effect in the well-studied homogeneous gas-phase reaction of O(³P) with smaller hydrocarbons. We conclude that the rotational distributions are composed of two different components. One originates from a direct abstraction mechanism with product characteristics similar to those in the gas phase. The other is a trapping-desorption process yielding a thermal, Boltzmann-like distribution close to the surface temperature. This conclusion is consistent with that reached previously from independent measurements of OH product velocity distributions in complementary molecular-beam scattering experiments. It is further supported by the temporal profiles of OH/OD laser-induced fluorescence signals as a function of distance from the surface observed in the current experiments. The vibrational branching ratios for (v′=1)/(v′=0) for OH and OD have been found to be (0.07±0.02) and (0.30±0.10), respectively. The detection of vibrationally excited hydroxyl radicals suggests that secondary and/or tertiary hydrogen atoms may be accessible to the attacking oxygen atoms.
The authors describe the application of a combination of velocity map imaging and time-of-flight (TOF) techniques to obtain three-dimensional velocity distributions for surface photodesorption. They have established a systematic alignment procedure to achieve correct and reproducible experimental conditions. It includes four steps: (1) optimization of the velocity map imaging ion optics’ voltages to achieve optimum velocity map imaging conditions; (2) alignment of the surface normal with the symmetry axis (ion flight axis) of the ion optics; (3) determination of TOF distance between the surface and the ionizing laser beam; (4) alignment of the position of the ionizing laser beam with respect to the ion optics. They applied this set of alignment procedures and then measured Br(²P₃/₂) (Br) and Br(²P₁/₂) (Br∗) atoms photodesorbing from a single crystal of KBr after exposure to 193 nm light. They analyzed the velocity flux and energy flux distributions for motion normal to the surface. The Br∗ normal energy distribution shows two clearly resolved peaks at approximately 0.017 and 0.39 eV, respectively. The former is slightly faster than expected for thermal desorption at the surface temperature and the latter is hyperthermal. The Br normal energy distribution shows a single broad peak that is likely composed of two hyperthermal components. The capability that surface three-dimensional velocity map imaging provides for measuring state-specific velocity distributions in all three dimensions separately and simultaneously for the products of surface photodesorption or surface reactions holds great promise to contribute to our understanding of these processes.
In this paper we investigate how concreteness and abstractness are represented in word embedding spaces. We use data for English and German, and show that concreteness and abstractness can be determined independently and turn out to be completely opposite directions in the embedding space. Various methods can be used to determine the direction of concreteness, always resulting in roughly the same vector. Though concreteness is a central aspect of the meaning of words and can be detected clearly in embedding spaces, it seems not as easy to subtract or add concreteness to words to obtain other words or word senses like e.g. can be done with a semantic property like gender.
Recent progress that has been made towards understanding the dynamics of collisions at the gas–liquid interface is summarized briefly. We describe in this context a promising new approach to the experimental study of gas–liquid interfacial reactions that we have introduced. This is based on laser-photolytic production of reactive gas-phase atoms above the liquid surface and laser-spectroscopic probing of the resulting nascent products. This technique is illustrated for reaction of O(³P) atoms at the surface of the long-chain liquid hydrocarbon squalane (2,6,10,15,19,23-hexamethyltetracosane). Laser-induced fluorescence detection of the nascent OH has revealed mechanistically diagnostic correlations between its internal and translational energy distributions. Vibrationally excited OH molecules are able to escape the surface. At least two contributions to the product rotational distributions are identified, confirming and extending previous hypotheses of the participation of both direct and trapping-desorption mechanisms. We speculate briefly on future experimental and theoretical developments that might be necessary to address the many currently unanswered mechanistic questions for this, and other, classes of gas–liquid interfacial reaction.
Background: This basically anatomical study focuses on two items; firstly, the establishment of a system for the cartographic subdivision of the neopallium; secondly, the topographical correlation of extracranial landmarks and intracranial sites on the neopallium.
Materials and methods: The surface of the neopallium was subdivided into 15 sectors with reference to a newly introduced pattern of Primary Sulci. The topographical link between extracranial landmarks and certain intracranial sites (i.e. neopallium sectors) was elaborated by using a simple stereotactic device and a computer-assisted measurement device. Measurements were performed between points on the head's outer surface and on the isolated brain.
Results and Conclusions: The introduction of an anatomical three-dimensional coordinate system was an essential key issue for this investigation. This setting facilitated the measurements and calculations of the so-called indirect distances that were characterised by their alignment along the three orthogonal axes (x, y, z) of the anatomical coordinate system. The inter-individual comparison (16 adult horses [Equus caballus]) of the indirect distances revealed that each sector centre lay within a distinct morphometric residence area. The measured and calculated data also showed that each sector centre could be assigned to its proper extracranial landmark that - in comparison with other landmarks - was best suited for the optimal allocation of the sector centre point.
