634 research outputs found
Generalized Alon-Boppana theorems and error-correcting codes
No full textIn this paper we describe several theorems that give lower bounds on the second eigenvalue of any quotient of a given size of a fixed graph, G. These theorems generalize Alon-Boppana type theorems, where G is a regular (infinite) tree. When G is a hypercube, our theorems give minimum distance upper bounds on linear binary codes of a given size and information rate. Our bounds at best equal the current best bounds for codes, and only apply to linear codes. However, it is of interest to note that (1) one very simple Alon-Boppana argument yields non-trivial code bound, and (2) our Alon-Boppana argument that equals a current best bound for codes has some hope of improvement. We also improve the bound in sharpest known Alon-Boppana theorem (i.e., when G is a regular tree)
Das Problem der Konzeptdefinition in der Wissensorganisation – Über einen missglückten Versuch der Klärung
No full textzu: Alon Friedman, Richard P. Smiraglia, (2013): Nodes and arcs: concept map, semiotics, and knowledge organization. In: Journal of Documentation, Vol. 69/1, S.27-48. DOI: 10.1108/0022041131129531
The Power of Lotka’s Law Through the Eyes of R
No full textThe paper aims to outline the author impact based on Lotka’s Law using R. Lotka’s Law is well known as “the inverse square law of scientific productivity.” It states that the number of authors publishing a certain number of articles is a fixed ratio to the number of authors publishing a single article. The study found authoring patterns do not match to Lotka’s Law. The study summarizes the results using ggplot2. While the study fail to support eminent literary authors productivity, future tests should use full data set, and avoid using samples or grouping as alternative. This is the first attempt to utilize R to employ Lotka’s law using R
A high performance transparent resistive switching memory made from ZrO2/AlON bilayer structure
No full textIn this study, the switching properties of an indium tin oxide (ITO)/zirconium oxide (ZrO2)/ITO single layer device and those of a device with an aluminum oxynitride (AlON) layer were investigated. The devices with highly transparent characteristics were fabricated. Compared with the ITO/ZrO2/ITO single layer device, the ITO/ZrO2/AlON/ITO bilayer device exhibited a larger ON/OFF ratio, higher endurance performance, and superior retention properties by using a simple two-step forming process. These substantial improvements in the resistive switching properties were attributed to the minimized influence of oxygen migration through the ITO top electrode (TE), which can be realized by forming an asymmetrical conductive filament with the weakest part at the ZrO2/AlON interface. Therefore, in the ITO/ZrO2/AlON/ITO bilayer device, the regions where conductive filament formation and rupture occur can be effectively moved from the TE interface to the interior of the device. Published by AIP Publishing.Ministry of Science and Technology, Taiwan [NSC 102-2221-E009-134-MY3]SCI(E)[email protected]
sj-pdf-1-jcb-10.1177_0271678X221135085 - Supplemental material for Stroke-prone salt-sensitive spontaneously hypertensive rats show higher susceptibility to spreading depolarization (SD) and altered hemodynamic responses to SD
No full textSupplemental material, sj-pdf-1-jcb-10.1177_0271678X221135085 for Stroke-prone salt-sensitive spontaneously hypertensive rats show higher susceptibility to spreading depolarization (SD) and altered hemodynamic responses to SD by Eun-Jeung Kang, Ofer Prager, Svetlana Lublinsky, Ana I Oliveira-Ferreira, Clemens Reiffurth,
Sebastian Major, Dominik N Müller, Alon Friedman, Jens P Dreier in Journal of Cerebral Blood Flow & Metabolism</p
Project InfoMoto (Summer 2011) IPRO 308: Project InfoMoto IPRO308 Summer2011 Final Report
No full textCurrently, some motorcycles have the ability to collect information about the performance of the vehicle. However, this information may not be easily accessible to the rider or mechanic of the bike and may also not be presented in an easily understood format. The equipment used to gather this data is generally not inexpensive as well. IPRO 308 intends to develop an affordable device called motoPro which firstly, will gather and record important information during a motorcycle trip and secondly, display that data in a user-friendly, understandable format. This data can be described as a rider profile. The rider profile will not only be useful for improving the safety and performance of the rider, but will also benefit the mechanic and also possibly the manufacturer of the motorcycle. Team motoPro completed initial technological and consumer research during this 2011 summer semester. The team investigated current technology to see what solutions it may provide, began obtaining some hardware components for prototype research and also began interviewing members of the motorcycle community in order to gain valuable insights to use for the device. Some members of the team also completed the Basic Riding Course offered through the Motorcycle Safety Foundation in order to become more familiar with riding a motorcycle. The project will continue into the 2011 fall semester and the team will continue consumer and technology research, create a compelling story with which to attract a sponsor and continue prototyping.Sponsorship: IIT Inter Professional CollaboratoryProject Plan for IPRO 308: Project InfoMoto for the Summer 2011 semeste
infoMOTO - Information Tools to Enhance the Performance and Experience of Motorcyclists, Summer 2011, IPRO 308: Presentation
No full textinfoMoto is a user-friendly and affordable aftermarket device which provides accessible feedback to the rider and mechanic as to the safety and performance of the motorcycle, which enhances the overall riding experience. Unlike existing standard equipment which provides minimal information, infoMoto notifies the user of impending malfunctions in addition to providing diagnostic information. This device may also help the designers of future models of motorcycles to head off any impeding problems, increasing the quality of their product.IPRO 308: infoMOTO for Summer 201
infoMOTO - Information Tools to Enhance the Performance and Experience of Motorcyclists, Summer 2011, IPRO 308: Final poster
No full textinfoMoto is a user-friendly and affordable aftermarket device which provides accessible feedback to the rider and mechanic as to the safety and performance of the motorcycle, which enhances the overall riding experience. Unlike existing standard equipment which provides minimal information, infoMoto notifies the user of impending malfunctions in addition to providing diagnostic information. This device may also help the designers of future models of motorcycles to head off any impeding problems, increasing the quality of their product.IPRO 308: infoMOTO for Summer 201
The Relationship Between Research Method and Visual Display: a Study of Conference Proceedings in the Field of Knowledge Organization
No full textIntroduction. Research method refers to how to conduct research, how to measure progress, and what constitutes success. Visualisation has become the platform for communicating research findings according to Friedman and Smiraglia . Knowledge organization aims to organize knowledge and many researchers employ visualisation in their findings. So, what was the relationship between research methods and visual display when researchers presented their findings?
Method. All conference proceedings of the International Society of Knowledge Organizationfrom 1990 to 2010 are examined, including 256 visualisations found in the 609 articles. A random sample of 50 visualisations is then analysed to determine the relationship between the research method and the type of visualisation used to display it.
Analysis. Content analysis, correlation analysis and predictive analysis are used to examine the relationship between research method and visual display.
Results. No relationship was shown between research method and the type of visualisation used due to the personalization of research methods and visualisation patterns that each researcher used in his/her research manuscript.
Conclusions. While visualisation has become a common platform, no discernible chronological pattern emerges of how the type of visualisation use changes over time
Project InfoMoto (Summer 2011) IPRO 308: Project%20InfoMoto%20IPRO308%20Summer2011%20Project%20Plan_redacted
No full textCurrently, some motorcycles have the ability to collect information about the performance of the vehicle. However, this information may not be easily accessible to the rider or mechanic of the bike and may also not be presented in an easily understood format. The equipment used to gather this data is generally not inexpensive as well. IPRO 308 intends to develop an affordable device called motoPro which firstly, will gather and record important information during a motorcycle trip and secondly, display that data in a user-friendly, understandable format. This data can be described as a rider profile. The rider profile will not only be useful for improving the safety and performance of the rider, but will also benefit the mechanic and also possibly the manufacturer of the motorcycle. Team motoPro completed initial technological and consumer research during this 2011 summer semester. The team investigated current technology to see what solutions it may provide, began obtaining some hardware components for prototype research and also began interviewing members of the motorcycle community in order to gain valuable insights to use for the device. Some members of the team also completed the Basic Riding Course offered through the Motorcycle Safety Foundation in order to become more familiar with riding a motorcycle. The project will continue into the 2011 fall semester and the team will continue consumer and technology research, create a compelling story with which to attract a sponsor and continue prototyping.Sponsorship: IIT Inter Professional CollaboratoryProject Plan for IPRO 308: Project InfoMoto for the Summer 2011 semeste
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