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2006

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Articles 4561 - 4590 of 5872

Full-Text Articles in Physical Sciences and Mathematics

Applications Of Linear And Nonlinear Optical Effects In Liquid Crystals, Hakob Sarkissian Jan 2006

Applications Of Linear And Nonlinear Optical Effects In Liquid Crystals, Hakob Sarkissian

Electronic Theses and Dissertations

Liquid crystals have been a major subject of research for the past decades. Aside from the variety of structures they can form, they exhibit a vast range of optical phenomena. Many of these phenomena found applications in technology and became an essential part of it. In this dissertation thesis we continue the line to propose a number of new applications of optical effects in liquid crystals and develop their theoretical framework. One such application is the possibility of beam combining using Orientational Stimulated Scattering in a nematic liquid crystal cell. Our numerical study of the OSS process shows that normally …

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Predicting Surface Scatter Using A Linear Systems Formulation Of Non-Paraxial Scalar Diffraction, Andrey Krywonos Jan 2006

Predicting Surface Scatter Using A Linear Systems Formulation Of Non-Paraxial Scalar Diffraction, Andrey Krywonos

Electronic Theses and Dissertations

Scattering effects from rough surfaces are non-paraxial diffraction phenomena resulting from random phase variations in the reflected wavefront. The ability to predict these effects is important in a variety of applications including x-ray and EUV imaging, the design of stray light rejection systems, and reflection modeling for rendering realistic scenes and animations of physical objects in computer graphics. Rayleigh-Rice (small perturbation method) and Beckmann-Kirchoff (Kirchhoff approximation) theories are commonly used to predict surface scatter effects. In addition, Harvey and Shack developed a linear systems formulation of surface scatter phenomena in which the scattering behavior is characterized by a surface transfer …

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Up-Conversion In Rare-Earth Doped Micro-Particles Applied To New Emissive 2d Dislays, Anne Milliez Jan 2006

Up-Conversion In Rare-Earth Doped Micro-Particles Applied To New Emissive 2d Dislays, Anne Milliez

Electronic Theses and Dissertations

Up-conversion (UC) in rare-earth co-doped fluorides to convert diode laser light in the near infrared to red, green and blue visible light is applied to make possible high performance emissive displays. The infrared-to-visible UC in the materials we study is a sequential form of non-linear two photon absorption in which a strong absorbing constituent absorbs two low energy photons and transfers this energy to another constituent which emits visible light. Some of the UC emitters' most appealing characteristics for displays are: a wide color gamut with very saturated colors, very high brightness operation without damage to the emitters, long lifetimes …

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Algorithms For Haplotype Inference And Block Partitioning, Satya Ravi Vijaya Jan 2006

Algorithms For Haplotype Inference And Block Partitioning, Satya Ravi Vijaya

Electronic Theses and Dissertations

The completion of the human genome project in 2003 paved the way for studies to better understand and catalog variation in the human genome. The International HapMap Project was started in 2002 with the aim of identifying genetic variation in the human genome and studying the distribution of genetic variation across populations of individuals. The information collected by the HapMap project will enable researchers in associating genetic variations with phenotypic variations. Single Nucleotide Polymorphisms (SNPs) are loci in the genome where two individuals differ in a single base. It is estimated that there are approximately ten million SNPs in the …

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Discrimination Of Automobile Carpet Fibers Using Multiple Analytical Techniques And The Subsequent Creation Of A Searchable Data, Derek Dorrien Jan 2006

Discrimination Of Automobile Carpet Fibers Using Multiple Analytical Techniques And The Subsequent Creation Of A Searchable Data, Derek Dorrien

Electronic Theses and Dissertations

Forensic fiber examination is an important part of trace evidence analysis. Fibers may be recovered from a crime scene that could link a particular suspect to the scene. Clothing fibers are most frequently encountered but automobile carpeting fibers may also be recovered. An understanding of the frequency of occurrence and the discrimination power of different analytical techniques is needed in order to better establish the evidentiary value of automobile carpet fiber evidence. Seventy-five automobile carpet fiber samples were analyzed using a series of techniques ranging from nondestructive to destructive. These techniques included polarized light microscopy, fluorescence microscopy, microspectrophotometry, Fourier-transform infrared …

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Object Association Across Multiple Moving Cameras In Planar Scenes, Yaser Sheikh Jan 2006

Object Association Across Multiple Moving Cameras In Planar Scenes, Yaser Sheikh

Electronic Theses and Dissertations

In this dissertation, we address the problem of object detection and object association across multiple cameras over large areas that are well modeled by planes. We present a unifying probabilistic framework that captures the underlying geometry of planar scenes, and present algorithms to estimate geometric relationships between different cameras, which are subsequently used for co-operative association of objects. We first present a local1 object detection scheme that has three fundamental innovations over existing approaches. First, the model of the intensities of image pixels as independent random variables is challenged and it is asserted that useful correlation exists in intensities of …

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Quantitative High-Angle Annular Dark Field Scanning Transmission To Electron Microscopy For Materials Science, Rumyana Petrova Jan 2006

Quantitative High-Angle Annular Dark Field Scanning Transmission To Electron Microscopy For Materials Science, Rumyana Petrova

Electronic Theses and Dissertations

Scanning transmission electron microscopy (STEM) has been widely used for characterization of materials; to identify micro- and nano-structures within a sample and to analyze crystal and defect structures. High-angle annular dark field (HAADF) STEM imaging using atomic number (Z) contrast has proven capable of resolving atomic structures with better than 2 A lateral resolution. In this work, the HAADF STEM imaging mode is used in combination with multislice simulations. This combination is applied to the investigation of the temperature dependence of the intensity collected by the HAADF detector in silicon, and to convergent beam electron diffraction (CBED) to measure the …

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Bioreactivity Of Estuarine Dissolved Organic Matter: A Combined Geochemical And Microbiological Approach, Sl Mccallister, Je Bauer, Elizabeth A. Canuel Jan 2006

Bioreactivity Of Estuarine Dissolved Organic Matter: A Combined Geochemical And Microbiological Approach, Sl Mccallister, Je Bauer, Elizabeth A. Canuel

VIMS Articles

An integrated multidisciplinary study utilizing geochemical and microbial ecological approaches was conducted to characterize the origins, chemical nature, and quantities of dissolved and particulate organic matter (OM) utilized by heterotrophic bacteria in a temperate estuary. C: N, stable isotope (delta C-13), and lipid biomarker analyses revealed differences in the inferred reactivity of autochthonous versus allochthonous OM sources. Isotopic comparison of OM size fractions and bacterial nucleic acids suggests that high-molecular-weight dissolved OM (DOM) is consistently linked to bacterial biomass synthesis along the estuarine salinity gradient. Polyunsaturated fatty acids (as percent of total fatty acids, FA) were a reliable predictor of …

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Erratum: Dynamics Of Filament Formation In A Kerr Medium [Phys Rev. A 71, 063811 (2005)], Martin Centurion, Ye Pu, Mankei Tsang, Demetri Psaltis Jan 2006

Erratum: Dynamics Of Filament Formation In A Kerr Medium [Phys Rev. A 71, 063811 (2005)], Martin Centurion, Ye Pu, Mankei Tsang, Demetri Psaltis

Martin Centurion Publications

We have found an error in this paper -- [Phys Rev. A 71, 063811 (2005)]. In our calculation of the intensity threshold for breakdown in CS2 we erroneously used the ionization energy of molecular CS2 (10.08 eV). The correct value should be 3.3 eV, the band gap energy of liquid CS2 . Using the band gap energy, nonlinear absorption will be a three-photon process, and the calculated breakdown threshold becomes 8.5 × 1011 W/cm2 (as opposed to the value of 2×1013 W/cm2 reported previously). Multiphoton absorption and plasma defocusing could then become significant …

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Magic Alkali-Fullerene Compound Clusters Of Extreme Thermal Stability, Axel Enders, N. Malinowski, D. Ievlev, E. Zurek, Jochen Autschbach, Klaus Kern Jan 2006

Magic Alkali-Fullerene Compound Clusters Of Extreme Thermal Stability, Axel Enders, N. Malinowski, D. Ievlev, E. Zurek, Jochen Autschbach, Klaus Kern

Axel Enders Publications

The thermal stability of free pure C60-, as well as C60-alkali, and -alkaline-earth metal compound clusters is investigated. We find that small (C60) m-clusters (m ≤ 6) decay at comparatively low temperatures below 400 K, as a consequence of weak intermolecular van der Waals interaction. Adding barium or potassium to the clusters dramatically increases the decay temperatures for “magic” configurations of (C60)mBa2m−1 and (C60)mK2m, which reach values as high as 1780 K. Contrary to common belief, the superstable compound …

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Analysis And Applications Of Autoregressive Moving Average Models With Stochastic Variance, Shelton Peiris, Ramprasad Bhar, David E. Allen Jan 2006

Analysis And Applications Of Autoregressive Moving Average Models With Stochastic Variance, Shelton Peiris, Ramprasad Bhar, David E. Allen

Research outputs pre 2011

It is known that volatility plays a central role in financial modelling problems. This paper studies, in detail, a class of discrete time stochastic volatility (SV) models driven by ARMA models with innovations having a stochastic variances. The auto- correlation function of this class of models is derived and methods of identification of such processes are described. An example is added to illustrate the development of the theory over the standard methods.

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Agent-Based Similarity-Aware Web Document Pre-Fetching, Jitian Xiao Jan 2006

Agent-Based Similarity-Aware Web Document Pre-Fetching, Jitian Xiao

Research outputs pre 2011

This paper presents an agent-based similarity-aware Web document pre-fetching scheme that is built on the similarity-aware Web caching architecture. A set of agents are employed to carry out certain duties such as document similarity detection, identification of relevant access patterns, document prediction and network traffic monitoring for document pre-fetching. Preliminary simulations have been conducted to evaluate the proposed scheme, and the results have shown that the new pre-fetching scheme outperforms existing Web-document pre-fetching algorithms

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Developing Recordkeeping: Australians Working Together, Karen Anderson Jan 2006

Developing Recordkeeping: Australians Working Together, Karen Anderson

Research outputs pre 2011

Australia has nine governments, each with their own archives and records legislation. This multiplicity of jurisdictions has the potential for generating divergence and incompatibility of standards. However, the Australian recordkeeping community works together with the result that consistent, complementary standards are not only customised to local legislative requirements and situations, but will in future ensure interoperability and ease of transfer of records wherever necessary. Australian recordkeeping professionals have a sound history of working together. The Implementation Guidelines for the current International standard for records management, /SO15489.2-2001, were adopted and adapted from those in an earlier Australian Standard for records management, …

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Fixture-Scheduling For The Australian Football League Using A Multi-Objective Evolutionary Algorithm, Luigi Barone, Lyndon While, Paul Hughes, Philip Hingston Jan 2006

Fixture-Scheduling For The Australian Football League Using A Multi-Objective Evolutionary Algorithm, Luigi Barone, Lyndon While, Paul Hughes, Philip Hingston

Research outputs pre 2011

AFL football is a team sport that entertains millions and contributes a huge amount of money to the Australian economy. Scheduling games in the AFL is difficult, as a number of different, often conflicting, factors must be considered. In this paper, we propose the use of a multi-objective evolutionary algorithm for determining such a schedule. We detail the technical details needed to apply a multi-objective evolutionary algorithm to this problem and report on experiments that show the effectiveness of this approach. Comparison with actual schedules used in the AFL demonstrates that this approach could make a useful contribution.

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A Preliminary Investigation Into Malware Propagation On Australian Isp Networks Using The Mwcollect Malware Collector Daemon, Craig Valli Jan 2006

A Preliminary Investigation Into Malware Propagation On Australian Isp Networks Using The Mwcollect Malware Collector Daemon, Craig Valli

Research outputs pre 2011

This paper describes an initial investigation into the propagation of malicious software (malware) that allows for remote command and control of Internet connected machines using the Windows platform in the Australian ISP address space. The research as conducted utilised the mwcollect daemon which is a low interaction honeypot on the Linux platform, to collect the details about the activity. The program mwcollect works by emulation of vulnerable services on the target platform in this case Windows based computers. There were two collectors within the pilot collection system. The machines were running no other Internet services such as http or mail, …

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Sql Injection - Threats To Medical Systems: The Issues And Countermeasures, Craig Valli Jan 2006

Sql Injection - Threats To Medical Systems: The Issues And Countermeasures, Craig Valli

Research outputs pre 2011

A vast majority of medical information systems use Standard Query Language databases (SQL) as the underlying technology to deliver medical records in a timely and efficient manner. SQL is a standardised and well entrenched database technology, which allows for the development of robust, customised applications for information management. In recent years, SQL has been used as the back-end to many successful web client accessible applications. The use of SQL in this manner has been greatly enhanced through the development of server side scripting languages such as Microsoft ASP and open source systems such as PHP. These allow for the representation …

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A Forensic Log File Extraction Tool For Icq Instant Messaging Clients, Kim Morfitt, Craig Valli Jan 2006

A Forensic Log File Extraction Tool For Icq Instant Messaging Clients, Kim Morfitt, Craig Valli

Research outputs pre 2011

Instant messenger programs such as ICQ are often used by hackers and criminals for illicit purposes and consequently the log files from such programs are of interest in a forensic investigation. This paper outlines research that has resulted in the development of a tool for the extraction of ICQ log file entries. Detailed reconstruction of data from log files was achieved with a number of different ICQ software. There are several limitations with the current design including timestamp information not adjusted for the time zone, data could be altered, and conversations must be manually reconstructed. Future research will aim to …

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The 2006 Analysis Of Information Remaining On Disks Offered For Sale On The Second Hand Market, Andrew Jones, Craig Valli, Iain Sutherland, Paula Thomas Jan 2006

The 2006 Analysis Of Information Remaining On Disks Offered For Sale On The Second Hand Market, Andrew Jones, Craig Valli, Iain Sutherland, Paula Thomas

Research outputs pre 2011

All organisations, whether in the public or private sector, use computers for the storage and processing of information relating to their business or services, their employees and their customers. A large proportion of families and individuals in their homes now also use personal computers and, both intentionally and inadvertently, often store on those computers personal information. It is clear that most organisations and individuals continue to be unaware of the information that may be stored on the hard disks that the computers contain, and have not considered what may happen to the information after the disposal of the equipment. In …

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Honeypots: How Do You Know When You Are Inside One?, Simon Innes, Craig Valli Jan 2006

Honeypots: How Do You Know When You Are Inside One?, Simon Innes, Craig Valli

Research outputs pre 2011

This paper will discuss honeypots and their use and effectiveness as a security measure in an IT environment. It will specifically discuss various methods of honeypot implementations. Furthermore, this paper will look into the weaknesses within a honeypot system. This will include attacks against honeypots and methods a hacker may use to detect the presence of a honeypot or the fact that he/she is actually inside one. Finally this paper will discuss methods of further securing honeypots and ways the community is dealing with security flaws as they are identified

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Changes In Demersal Wild Fish Aggregations Beneath A Sea-Cage Fish Farm After The Cessation Of Farming, Fernando Tuya, Pablo Sanchez-Jerez, Tim Dempster, Arturo Boyra, R Haroun Jan 2006

Changes In Demersal Wild Fish Aggregations Beneath A Sea-Cage Fish Farm After The Cessation Of Farming, Fernando Tuya, Pablo Sanchez-Jerez, Tim Dempster, Arturo Boyra, R Haroun

Research outputs pre 2011

Demersal, non-cryptic, wild fish were counted in replicate 100 m2 transects beneath a floating sea-cage fish farm and two nearby sandy locations at Gran Canaria (Canary Islands, eastern Atlantic) four times before and after the cessation of farming. Cessation of farming involved the removal of farmed fish and ceasing of the daily feeding, although farm structures (cages and moorings) remained. A “beyond-BACI” sampling design provided the framework to detect the effect of the cessation of farming, which produced qualitative and quantitative changes in the composition and structure of the fish assemblages beneath the sea-cage fish farm compared with two nearby …

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The Hillarys Transect (1): Seasonal And Cross-Shelf Variability Of Physical And Chemical Water Properties Off Perth, Western Australia, 1996-98, Alan Pearce, Mervyn Lynch, Christine Hanson Jan 2006

The Hillarys Transect (1): Seasonal And Cross-Shelf Variability Of Physical And Chemical Water Properties Off Perth, Western Australia, 1996-98, Alan Pearce, Mervyn Lynch, Christine Hanson

Research outputs pre 2011

A 27-month study of the water properties across the continental shelf off Perth, Western Australia (the "Hillarys Transect") has provided the first systematic inter-disciplinary climatology of the physical, chemical, optical and biological cycles across the shelf. This paper describes the main features of the seasonal and cross-shelf variability of the physical oceanography and chemistry, while companion papers discuss some of the links between the biology and physics of the region

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A Comparison Of Heuristics For Scheduling Spatial Clusters To Reduce I/O Cost In Spatial Join Processing, Jitian Xiao Jan 2006

A Comparison Of Heuristics For Scheduling Spatial Clusters To Reduce I/O Cost In Spatial Join Processing, Jitian Xiao

Research outputs pre 2011

In spatial join processing, a common method to minimize the I/O cost is to partition the spatial objects into clusters, and then to schedule the processing of the clusters in the spatial join processing such that the number of times the same objects to be fetched into memory can be minimized. A key issue of this clustering-and-scheduling approach is how to produce a better sequence of clusters to guide the cluster scheduling thus to reduce the total I/O cost of spatial join processing. This paper describes three cluster sequencing heuristics. An extensive comparison among them has been conducted, and simulation …

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Opening Pandora's Box: Teacher Librarianship In The Twenty-First Century, Barbara Combes Jan 2006

Opening Pandora's Box: Teacher Librarianship In The Twenty-First Century, Barbara Combes

Research outputs pre 2011

In a world that is currently struggling to come to terms with the Internet, the exponential explosion in the volume of readily available information and a plethora of delivery modes and resource formats; the role of the teacher librarian and the school library in this new information landscape is murkier than ever before, This presentation looks at how teacher librarians can reinvent themselves and their school libraries to become an essential component of the core business of the school, i.e." teaching and learning, It is all about unlocking hidden talents, facing challenges and taking control.

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Spatial Patterns And Response To Wave Exposure Of Shallow Water Algal Assemblages Across The Canarian Archipelago: A Multi-Scaled Approach, Fernando Tuya, Ricardo J Haroun Jan 2006

Spatial Patterns And Response To Wave Exposure Of Shallow Water Algal Assemblages Across The Canarian Archipelago: A Multi-Scaled Approach, Fernando Tuya, Ricardo J Haroun

Research outputs pre 2011

We conducted a mensurative survey to investigate spatial variability and the effect of wave exposure at a range of spatial scales including islands (100s of kilometres apart), locations within islands (10s of kilometres apart), and sites within locations (100s of meters apart), on the composition, abundance and distribution of shallow water algal assemblages across subtidal hard bottoms of the Canarian Archipelago (eastern Atlantic). A multi-scaled hierarchical sampling design provided the framework for quantifying the variation among samples due to each spatial scale and level of wave exposure. Haphazardly placed 50 x 50 cm quadrats were deployed in shallow rocky-reefs to …

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Mohr-Circle-Based Rotational Invariants Of A Magnetotelluric Data Set From The Thrace Region Of Turkey: Geological Implications, Murat Bayrak, Aysan Gürer, Ö. Feyzi̇ Gürer, O. Meti̇n İlkişik, Ahmet T. Başokur Jan 2006

Mohr-Circle-Based Rotational Invariants Of A Magnetotelluric Data Set From The Thrace Region Of Turkey: Geological Implications, Murat Bayrak, Aysan Gürer, Ö. Feyzi̇ Gürer, O. Meti̇n İlkişik, Ahmet T. Başokur

Turkish Journal of Earth Sciences

In the summer of 1995, magnetotelluric data were acquired at forty sites along a southwest-northeast profile crossing northwestern Turkey in continental Europe. The traverse, 204 km in length, crossed the boundary between a metamorphic mass called the Istranca Massif and a large Tertiary sedimentary basin called the Thrace Basin. The pseudosections of Mohr-circle-based rotational invariant characteristics of the magnetotelluric data such as central impedance (d3), anisotropy angle (l) and phase of central impedance (fd3) were prepared with classical magnetotelluric parameters (apparent resistivity and impedance phase), and detailed Mohr-circle displays were shown for selected stations as a function of the Bostick …

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The Effects Of Small Metal Additions (Co,Cu,Ga,Mn,Al,Bi,Sn) On The Magnetocaloric Properties Of The Gd5ge2si2 Alloy, R D. Shull, V Provenzano, A J. Shapiro, A Fu, Michael W. Lufaso, J Karapetrova, G Kletetschka, V Mikula Jan 2006

The Effects Of Small Metal Additions (Co,Cu,Ga,Mn,Al,Bi,Sn) On The Magnetocaloric Properties Of The Gd5ge2si2 Alloy, R D. Shull, V Provenzano, A J. Shapiro, A Fu, Michael W. Lufaso, J Karapetrova, G Kletetschka, V Mikula

Chemistry Faculty Research and Scholarship

The structural and magnetic properties of arc-melted and homogenized (1300 °C, 1 h) alloys of Gd5Ge1.9Si2X0.1 (X = Cu, Co, Ga, Mn, Al, Bi, or Sn) were investigated by powder x-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, and magnetometry. The addition of Cu, Ga, Mn, and Al completely eliminated the large hysteresis losses present in the undoped Gd5Ge2Si2 alloy between 270 and 330 K, broadened the magnetic entropy change ΔSm peak, and shifted its peak value from 275 to 305 K similar to that …

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Pressure Induced Octahedral Tilting Distortion In Ba2ytao6, Michael W. Lufaso, René B. Macquart, Yongjae Lee, Thomas Vogt, Hans-Conrad Zur Loye Jan 2006

Pressure Induced Octahedral Tilting Distortion In Ba2ytao6, Michael W. Lufaso, René B. Macquart, Yongjae Lee, Thomas Vogt, Hans-Conrad Zur Loye

Chemistry Faculty Research and Scholarship

Herein we communicate the first example of a pressure induced octahedral tilting distortion in a double perovskite phase, which was observed during the structural characterization of Ba2YTaO6 using high-pressure synchrotron X-ray powder diffraction.

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Controlling Charge Injection In Organic Field-Effect Transistors Using Self-Assembled Monolayers, B H. Hamadani, D A. Corley, Jacob W. Ciszek, J M. Tour, D Natelson Jan 2006

Controlling Charge Injection In Organic Field-Effect Transistors Using Self-Assembled Monolayers, B H. Hamadani, D A. Corley, Jacob W. Ciszek, J M. Tour, D Natelson

Chemistry: Faculty Publications and Other Works

We have studied charge injection across the metal/organic semiconductor interface in bottom-contact poly(3-hexylthiophene) (P3HT) field-effect transistors, with Au source and drain electrodes modified by self-assembled monolayers (SAMs) prior to active polymer deposition. By using the SAM to engineer the effective Au work function, we markedly affect the charge injection process. We systematically examine the contact resistivity and intrinsic channel mobility and show that chemically increasing the injecting electrode work function significantly improves hole injection relative to untreated Au electrodes.

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Liver Carcinogenesis In A Non-Migratory Fish: The Association With Polycyclic Aromatic Hydrocarbon Exposure, Wolfgang K. Vogelbein, M. A. Unger Jan 2006

Liver Carcinogenesis In A Non-Migratory Fish: The Association With Polycyclic Aromatic Hydrocarbon Exposure, Wolfgang K. Vogelbein, M. A. Unger

VIMS Articles

Field and laboratory studies indicate a strong positive association between exposure to chemical pollutants in aquatic environments and development of neoplasia in fishes. This brief communication reviews some of the more important North American and European studies that have been conducted on this relationship. We then review work conducted on a small nonmigratory estuarine cyprinodontid teleost fish, the mummichog (Fundulus heteroclitus) in the industrialized Elizabeth River, Virginia USA. Histopathological surveys of mummichogs from variously degraded habitats indicate an association between PAH exposure and development of neoplasia. We have observed non-neoplastic lesions, preneoplasms and hepatic, biliary, exocrine pancreatic and vascular neoplasms …

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The Electronic Structure And Band Hybridization Of Co/Ti Doped Bafe12O19, Natalie Palina, H. Modrow, R. Müller, J. Hormes, Peter A. Dowben, Yaroslav B. Losovyj Jan 2006

The Electronic Structure And Band Hybridization Of Co/Ti Doped Bafe12O19, Natalie Palina, H. Modrow, R. Müller, J. Hormes, Peter A. Dowben, Yaroslav B. Losovyj

Department of Physics and Astronomy: Faculty Publications

We identify contributions to the valence band of the nanosized BaFe12−2xCoxTixO19 barium ferrite particles, from the cobalt and titanium dopants. Resonant photoemission results show that cobalt and titanium dopants strongly hybridize with the barium ferrite matrix. Fano resonances are identified in the valence band region, at the Ba (5s), Ti (3p) and Co (3p) thresholds, and there are significant contributions to the density of states, residing within 2 eV of the Fermi level, from barium and/or iron.

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