Xerox researchers appear at several scientific conferences worldwide. Below is
a list of some past presentations.
2003 Conferences Archive
2004 Conferences Archive
2005 Conferences Archive
2006 Conferences Archive
2008 Conferences Archive
Back to Current Calendar
|
January
XRCE at kick off meeting of the European project SAPIR
January 15 - 18
, Padova, Italy
SAPIR:Search on Audio-visual content using Peer-to-peer Information Retrieval
Aaron Kaplan, XRCE, and Caroline Hagège, XRCE, participate in the kick off meeting. SAPIR aims at leveraging search in audio-visual content. "A picture is worth thousands words" so using an image taken by a cell phone to find info about e.g. a monument we bump into or singing a melody as a search hint for a full song, combined with optional metadata annotations and user and social networking context will provide next level of search capabilities and precision of retrieved results.
|
XRCE at Front End of Innovation Europe conference
January 23
, Munich, Germany
Christer Fernström, XRCE manager Strategy and Planning, will participate in this conference which is themed "Achieve Profitable Growth by Drastically Improving Early Stage Product and Service Development". He will give a presentation within the session " Building and Managing an Innovative Rich Culture ".
|
XRCE open house seminar:The Active Listening Experience
January 25
, Mont Blanc meeting room
François Pachet, Researcher at Sony Computer Science Lab, Paris, France will give a talk: "The Active Listening Experience"
Abstract:
The days in which musical experience had to rely on the one-way communication of radios have started to fade in our memories. Computers now not only mediate the production process of music, but also assist us in accessing, playing and even mixing our favourite tunes. Unfortunately, only a fraction of the possibilities offered by this shift has been exploited so far. My own research to push the enormous opportunities created by new technologies further centers on Active Listening. Active Listening attempts to put the listener in the center of the musical experience.
My talk will illustrate the key ideas with video and music examples in various projects conducted at Sony CSL. The MusicBrowser project offers the first large-scale music accessing software that proposes automatic metadata and similarity relations to users. We have investigated how machines can extract meaningful information from audio signals such as timbre, energy, or rhythm, and how this information can be exploited in intuitive, user-friendly navigation interfaces. If we analyze musical information in a precise way, we can define novel schemes for music interaction. We have been exploring this through several experimental systems. The MusicSpace project has investigated how listeners can actively change the overall mixing of pieces of music using naive actions, which are then automatically translated into complex audio engineering commands to ensure that the pieces are always "right". With the Continuator, we have explored how musicians can improvise with a machine that picks up their personal styles and then responds back with variations.
|
Electronic Imaging 2007
January 28 - February 2
, San Jose California
Topic:Rank-Ordered Error Diffusion: Method and Applications
Robert P. Loce and Beilei Xu
Abstract: In this paper we present a specialized form of error diffusion that addresses certain long-standing problems associated with operating on images possessing halftone structure as well as other images with local high contrast. For instance, when rendering an image to printable form via quantization reduction, image quality defects often result if that image is a scanned halftone. Rendering such an image via conventional error diffusion typically produces fragmented dots, which can appear grainy and be unstable in printed density. Rendering by simple thresholding or rehalftoning often produces moiré, and descreening blurs the image. The image processing operator introduced in this paper, rank-order error diffusion, has been developed to address these problems. Rank-order error diffusion utilizes brightness ranking of pixels within a diffusion mask to diffuse quantization error at a pixel. This approach to diffusion results in an image-structure-adaptive quantization with many useful properties. The present paper describes the basic methodology of rank-order error diffusion as well as several variations and applications.
Topic: Presentation of Structured Documents Without a Style Sheet
Steve Harrington
Abstract: Representations such as XML allow the capture of information from full documents for people to the data of messages. While some XML vocabularies such as SVG contain formatted document information and others such as XSL-FO contain formatting instructions, most vocabularies encode information without formatting. In order to present the document for human consumption, formatting information must be introduced and applied. The formatting not only makes the document more readable, but also provides information about its structure. Formatting is typically done through a style sheet. However, it is conceivable that one could wish to view the document without a style sheet (either because a style sheet does not exist, or is unavailable, or is inappropriate for the display device. Default style sheets are possible, but they typically do not provide very satisfactory renditions. This paper describes a method for formatting structured documents without a provided style sheet. The idea is to first analyze the document to determine structures and features that might be relevant to style decisions. A transformation can be constructed to convert the original document to a generic form that captures the semantics that will be expressed through formatting and style. In the second stage styling is applied to the structures and features that have been discovered by applying a pre-defined style sheet for the generic form. While the second stage is applied to the specific document instance, the first stage can gather information from a variety of sources. In addition to the document instance, the corresponding schema or DTD can be analyzed; information from other document instances might be used, and information might be extracted from an inappropriate style sheet that matches the document's vocabulary. This paper will describe the generic form used for formatting and techniques for generating transformations to it.
Topic: Removal of rigning artifacts from JPEG Compressed Document Images
Speakers:Basak Oztan, Zhigang Fan, Reiner Eschbach, and Amil Malik
Abstract:JPEG is a well-known and widely used digital image compression technique. Although compression of natural images is the primary goal of JPEG, there is a great number of other types of images such as medical, non natural or document images that can also be encountered which are compressed by JPEG in digital environments. Due to
the coarse quantization of the high frequency DCT coefficients, a typical JPEG compressed document image highly suffers from ringing artifacts also known as mosquito noise near the edges of the textual components.
As the JPEG compression ratio increases, these artifacts become increasingly apparent and more disturbing to the person viewing the image after decompression. Although there are existing techniques that can eliminate these artifacts regardless of the image type, a computationally less intensive method would be much useful if the size or number of images to be processes are too large. In this framework, we propose a simple image processing technique to eliminate the ringing artifacts from JPEG compressed document images. The method uses a binarization technique to remove the artifacts and incorporates morphological image transforms to preserve the natural appearance of the document image. We show the efficiency of the method on both graylevel and color document images at different compression levels and compare our results with other state-of-art techniques.
Topic: Uniform Rosettes for Moire-Free Color Halftoning
Speaker:Shen-ge Wang
Abstract:In color reproduction, the most troublesome moire pattern is the second-order moirk,or the three-color moirk, usually produced by mixing of cyan, magenta and black halftone outputs. A classical three-color zero-moire solution is using three identical cluster halftone screens with different rotations: 15, 45 and 75", respectively. The general conditions for three-color zero-moire solutions usually are specified for the fundamental frequencies only. Even if these conditions are satisfied, there is no guarantee such that the interaction between higher-order harmonics of the three colors will not produce noticeable moires. Described in this paper is a moirk-free color halftone configuration for clustered dots. Unlike conventional methods, the new method produces periodic hexagon rosettes of identical shapes. These exemplary hexagon rosettes have three fundamental spatial frequencies exactly equal to half of the fundamental frequency of the three halftone screens. The resultant halftone outputs are truly moire free, as all the fundamentals and harmonic frequencies are multiples of and thus higher in frequency than the rosette fundamental frequency. The halftone outputs resulting from the employment of the exemplary rosette design methodology provided are also robust to the typical rnis-registration among color separations commonly found in color systems.
Topic: Local Contrast enhancement,
Authors: Marco Bressan, Chris Dance, Herve Poirier, Damian Arregui
|
February
12th Annual Strategic & Operational Portfolio Management
February 27
, Clearwater, FLA
Speaker: George Gibson
Topic: The Strategic Role of Innovation in R&D Portfolio Management
|
March
Western New York Chapter - PDMA
March 1
, Rochester, NY
Speaker: Patricia Swenton-Wall
Title: Using Ethnographic Research to Drive Innovation
Abstract: Xerox was an early pioneer in the use of ethnographic techniques to drive innovation in a corporate setting. Ethnographers at Xerox use observations and in-situ interviews, as well as other qualitative techniques, to develop an in-depth understanding of our customers' work practices. Studies are often conducted in collaboration with technologists and business professionals within the company. Results of these studies are used guide the development of products and services, as well as to inspire new technology innovations. In this talk, we will provide an overview of what ethnography is and discuss case studies to demonstrate how it has been applied in development and research contexts at Xerox.
|
Innovations Conference 2007
March 6
, New Orleans, LA
Sophie Vandebroek, CTO - keynote address 10th annual conference hosted by the league for Innovation in the Community College
|
XRCE at 2nd International Conference on Computer Vision Theory & Applications
March 8 - 11
, Barcelona, Spain
Gabriela Csurka, researcher XRCE Visual Content research group, will present a paper:
Marco Bressan(XRCE), Gabriela Csurka and Sebastien Favr(XRCE): Towards Intent Dependent Image Enhancement: State-of-the-art and Recent Attempts
Abstact : Image enhancement is mostly driven by intent and its future largely relies on our ability to map the space of intentions with the space of possible enhancements. Taking into account the semantic content of an image is an important step in this direction where contextual and aesthetic dimensions are also likely to have an important role. In this article we detail the state-of-the-art and some recent efforts in for semantic or content-dependent enhancement. Through a concrete example we also show how image understanding and image enhancement tools can be brought together. We show how the mapping between semantic space and enhancements can be learnt from user evaluations when the purpose is subjective quality measured by user preference. This is done by introducing a discretization of both spaces and notions of coherence, agreement and relevance to the user response. Another example illustrates the feasibility of solving the situation where the binary option of whether or not to enhance is considered.
|
XRCE at European Workshop on Data Stream Analysis
March 14 - 17
, Caserta, Italy
Laurent Donini, researcher XRCE Large-Scale-Data-Mining research group will participate in the European workshop on data stream analysis which seeks to bring together researchers working on data base, machine-learning, decision rules, decision trees, association rules, filtering, data mining, clustering, visualization techniques, etc. from data streams and related themes.
|
Nanotechnology at Xerox Research Centre of Canada
March 14
, Nano-to-Giga Conference, Arizona
SPEAKER: Hadi Mahabadi
|
European Business Summit
March 15 - 17
, Brussels, Belgium
European Business Summit - Reform to Perform. "Technology and Innovation: Developing Lead EU Markets" - Monica Beltrametti, panelist.
|
Rochester Engineering Society Annual Engineering Gala
March 24
, Rochester, New York
Sophie Vandebroek, CTO - keynote address
|
April
Approaches to Optimizing the Performance of Polythiophene Transistors
April 9
, San Francisco Marriott, San Francisco, CA, USA
SPEAKERS: Yiliang Wu, Ping Liu, Yuning Li, Beng Ong ABSTRACT: Printed transistor circuits using solution-based materials represent low-cost alternatives to silicon-based technologies for large-area, flexible electronics. In this talk, we will use our polythiophenes as examples to discuss the approaches to optimizing transistor performance, including molecule design, synthesis methods, device structure design, and interface optimization.
|
Cornell Alumni Association Conference on Globalization
April 20
, Ithaca, NY
Sophie Vandebroek, Keynote
|
ISCC 2007 Annual Meeting
April 29 - May 2
, Kansas City, Missouri
Title: Natural Language Color Editing
Speaker: Geoff Woolfe
Abstract: There are many ways to specify color and color difference. Color imaging scientists and engineers describe color using precise, numeric color specifications. Such color specifications are often based on the color matching behavior of a standard human observer and are referred to as device-independent colorimetric specifications. Commonly used colorimetric specifications include CIE XYZ, and the more perceptually uniform, CIELab system. In the world of digital printing, color is also frequently described in terms of the device-dependent control values needed to generate a color on a specific device. Colors can also be specified using color order systems such as the Munsell Book of Color, the Swedish Natural Color System, or the Pantone Color Formula Guide. These types of color specifications also provide a precise color specification, but are more commonly used by professionals in the color graphics and design industries rather than color imaging. (To read more, please go to the DS site for the full abstract)
Title: Ethnographic Studies of Pre-Press Workflows
Speaker: Mary Ann Sprague
Abstract: This paper reports findings from a multi-site ethnographic study conducted to observe the use of color controls in relation to commercial digital color printing. Key findings include: 1) Very few files actually contained ICC (International Color Consortium) profile color management tags; 2) For files that did have profiles attached, the profiles were not trusted or used by commercial printers; 3) Current color management tools supplied in the Digital Front Ends (DFE's) of commercial printers were designed with the assumption that ICC profile tags are being used. Therefore, these tools do not support the actual workflow without the use of ICC profiles. 4) Even if ICC profiles had been attached to files, operators still were not able to use color management correctly.
|
Natural Language of Color Editing: Making Color Accessible to Non-Expert
April 30
, Kansas City, Missouri
SPEAKER: Geoff Woolfe ABSTRACT: There are many ways to specify color and color difference. Color imaging scientists and engineers describe color using precise, numeric color specifications. Such color specifications are often based on the color matching behavior of a standard human observer and are referred to as device-independent colorimetric specifications. Commonly used colorimetric specifications include CIE XYZ, and the more perceptually uniform, CIELab system. In the world of digital printing, color is also frequently described in terms of the device-dependent control values needed to generate a color on a specific device. Colors can also be specified using color order systems such as the Munsell Book of Color, the Swedish Natural Color System, or the Pantone Color Formula Guide. These types of color specifications also provide a precise color specification, but are more commonly used by professionals in the color graphics and design industries rather than color imaging. (To read more, please go to the DS site for the full abstract) Title: Ethnographic Studies of Pre-Press Workflows Speaker: Mary Ann Sprague Abstract: This paper reports findings from a multi-site ethnographic study conducted to observe the use of color controls in relation to commercial digital color printing. Key findings include: 1) Very few files actually contained ICC (International Color Consortium) profile color management tags; 2) For files that did have profiles attached, the profiles were not trusted or used by commercial printers; 3) Current color management tools supplied in the Digital Front Ends (DFE's) of commercial printers were designed with the assumption that ICC profile tags are being used. Therefore, these tools do not support the actual workflow without the use of ICC profiles. 4) Even if ICC profiles had been attached to files, operators still were not able to use color management correctly.
|
May
XRCE Open house seminar
May 1
, Everest
Title:
------
Some recent advances in efficiently constructing and interpreting finite automata
Abstract:
---------
In this talk, I will present some of the newest algorithms, data-structures and architectures for implementing finite automata. An "implementation" of finite automata typically consists of two phases:
construction of the automaton (which may be done off-line), and "simulation" of the automaton against some kind of input string. In the former case, the data-structures can grow enormously and it is crucial to limit memory consumption both during the construction and also for the final representation of the automaton. In the latter (simulation) case, the emphasis lies in the speed with which the string can be processed, with less regard for memory consumption. For both the space/memory and time efficiency requirements, we have developed new algorithms, some of which are surprisingly simple. Examples in this talk will largely be taken from the field of network security (firewalls), and may include a short demonstration of the FIRE Station.
Speaker:
--------
Bruce Watson, Technische Universiteit Eindhoven, Eindhoven, The
Netherlands: Professor.
http://www.win.tue.nl/~watson/
|
Ethnographic Studies of Digital Pre-Press Color Workflows
May 1
, Kansas City, Missouri
SPEAKER: Mary Ann Sprague, Geoff Wolfe, Jennifer Perotti, J. O'Neill, T. Columbino, D. Martin ABSTRACT: This paper reports findings from a multi-site ethnographic study conducted to observe the use of color controls in relation to commercial digital color printing. Key findings include: 1) Very few files actually contained ICC (International Color Consortium) profile color management tags; 2) For files that did have profiles attached, the profiles were not trusted or used by commercial printers; 3) Current color management tools supplied in the Digital Front Ends (DFE's) of commercial printers were designed with the assumption that ICC profile tags are being used. Therefore, these tools do not support the actual workflow without the use of ICC profiles. 4) Even if ICC profiles had been attached to files, operators still were not able to use color management correctly.
|
Gordon Conference on Supramolecules and Assemblies
May 6 - 12
, Barga, Italy
Speaker: Tyler Norsten
Other Authors: Caroline Turek, Stephan Drappel, Peter Odell
Poster Session: Tuning Properties in Hydrogen-Bond Containing Materials
|
Emerging Xerox Technologies for the Financial Services Industry
May 8
, 245 Park Avenue, New York
SPEAKER: Eduardo Bascaran, LSS
& DfLSS Deployment Manager, Xerox Innovation Group ABSTRACT: The Xerox Financial
Services Advisory Council: Making your business better. By bringing the
industry's best together.
|
Materials & Component Design for Marking Systems: Current State and Future Challenges
May 9
, Alexandria, VA
SPEAKER: Dr. Santokh S. Badesha, Xerox Fellow and Manager, R&D Globalization & Open Innovation Xerox,Innovation Group, Xerox Corporation ABSTRACT:The components that make prints in the various print engines are made from basic building blocks, which comprise molecules and elements. Over time, the demand for components to perform more than one function has brought us to the point now where all of today's components must serve many functions. Often times some of these functions are nonobvious. Thus, the "critical components" discussed in this presentation can be characterized by their degree of "multifunctionality" and "complexity", both in the underlying materials and in the sophisticated processes used in their fabrication. This presentation will provide a framework for understanding the modern, advanced materials that are used in high performance printing components. It will describe and examine the role of functional surfaces in the printers' ink, toner and media paths. It will draw upon and use examples of high functionality components from key subsystems. The presentation will be in four parts. The first part will include an introduction to Xerox Corporation as an innovation based company and its current and evolving businesses. The second part will provide insights into various marking technologies and include comments about the role of critical surfaces for functional performance. The third part will cover enabling materials and component designs for most of the key subsystems such as; image generation, cleaning, fusing, charging, & developments which are involved in the xerographic marking processes. The fourth section will describe various fusing subsystem designs, the current state, and associated cost and environmental issues with major emphasis on performance optimization. The presentation will close with material design challenges to optimize system interactions in the fuser nip impacting fuser component life and image quality.
|
Why's Xerox interested in Nanotechnology and what's the strategy?
May 14
, Canandaigua Inn on the Lake in Canandaigua, New York
SPEAKER: Kock-Yee Law ABSTRACT: Information sharing about why Xerox is interested in nanotechnology and our strategy at very high level. The basic steps of the xerographic processes and some color architecture will be shown.
|
IIE Annual Conference and Expo in Nashville, TN (May 19-23)
May 19
, Nashville, TN
"LDP Lean Document Production®: A novel solution for the printing industry" - Lin, J., Rai, S.
Abstract: Lean Manufacturing approaches have been widely used in improving the productivity and quality of manufacturing operations. However, most of these operations exhibit low input variability in terms of product mix, job sizes and cycle time requirements when compared to print production environments that are characterized by significant variation in these dimensions and are often labor intensive. A feature of print production environments is relatively short workflows with most document product manufacturing requiring less than about 20 steps. This talk will discuss a patented production framework called LDP Lean Document Production® that has shown to substantially improve the productivity and quality of a number of print production environments. Salient features of the solution will be discussed including the notion of autonomous cells, a hierarchical scheduling architecture and corresponding algorithms for routing, sequencing, releasing and batching jobs and some corresponding software tools and best practices. Results of cases studies of implementation of this solution to several different print environments will also be discussed.
|
IS&T Archiving Conference
May 21 - 25
, Washington, DC
Abstract: The Use of JPEG2000 in the Information Packages of the OAIS Reference Model
Robert Buckley, William Stumbo and Jim Reid
Xerox Corporation
Two items you would have heard discussed at the 2006 IS&T Archiving Conference in Ottawa and thought prominent in archiving applications were OAIS and, in the case of image archiving, JPEG2000. OAIS stands for Open Archival Information System, while JPEG2000 is the most recent image compression standard from the JPEG committee. While use of JPEG2000 is growing in image archiving systems, its use is seldom described in the context of OAIS model. This paper will report on an investigation into the use of JPEG2000 in the context of the OAIS Information Packages and their requirements.
Background: The OAIS Standard (ISO 14721:2003) defines the Reference Model for an Open Archival Information System [1]. According to the standard, an OAIS is "an archive, consisting of an organization of people and systems that has accepted the responsibility to preserve information and make it available for a Designated Community." The Reference Model is a framework for understanding and applying the concepts needed for the long-term preservation of digital information. The OAIS model covers the full range of functions associated with an archive: ingest, storage, data management, access, administration and planning. Figure 1 (Figure 4-1 in [1]) shows the six functional entities and the major information flows in the OAIS model.
Figure 1: OAIS Model
In the logical view, the Information Package (IP) is the structure that supports the long-term preservation of digital information. The three types of information package are Submission IP (SIP), which transports the required information from the producer to the OAIS; Archival IP (AIP), which structures and stores OAIS holdings; and Dissemination IP (DIP), which transports requested information between the OAIS to the consumer.
JPEG2000 is an open wavelet-based image compression standard [2]. Compared to existing methods, JPEG2000 has features and capabilities that make it attractive for image archiving and access [3]. It has a single algorithm for lossy and lossless compression and supports progressive display and scalable rendering. JPEG2000 simplifies image management by reducing the need to maintain multiple image derivatives and enables preservation by providing generous metadata support. The smart decoding capabilities of JPEG2000 enable fast access to image subsets and the generation of image derivatives on demand and on the fly to meet customer requests for pan and zoom views. The JPEG2000 standard also defines file formats that are capable of representing single or multiple images [1, 4].
OAIS Data Flow: Figure 2 shows the base data flow configuration in an OAIS-based system, from SIP to AIP to DIP.
Figure 2: OAIS Base Data Flow Configuration
Several elaborations of the base model shown in Figure 2 are possible. For example, one of more SIPs can be transformed into one or more AIPs, and one or more AIPs can be transformed into one of more DIPs. Also, different IPs can have different amounts of JPEG 2000 content, and the content can be packaged different ways.
Because JPEG2000 is especially advantaged for storage and distribution, this paper will focus on the use of JPEG2000 for archiving and dissemination. It will review the various JPEG2000 use models currently employed, casting them in terms of data flows using AIPs and DIPs, although they are seldom used in the description of these models.
When discussing JPEG2000, it is useful to distinguish the compression algorithm from the file format, both of which were standardized by the JPEG committee as part of the JPEG2000 standard. The base JPEG2000 file format combines header information, image parameters and metadata with a JPEG2000-compressed codestream into a single file. This reason to make this distinction is that a JPEG2000-compressed codestream can be embedded in different file formats, and members of the JPEG2000 file format family can contain non-JPEG2000-compressed or even uncompressed image data. The review will also describe the use of the JPEG2000 file format with non-JPEG2000 data.
JPEG2000-based AIPs: The focus on archival and dissemination packages means that the parameters of the JPEG2000 encoding in the AIP can have a significant effect on system performance. First, there's the effect the encoding parameters have on the ability of the AIP to meet the requirements of the archival package. Second, there's the effect they have on the transformation between AIPs and DIPs, especially when the DIPs are not precomputed but derived on demand to meet consumer requests.
The paper will also discuss the main JPEG2000 encoding choices and their effect on performance, with reference to actual design cases and the choices made in them [5]. The discussion of encoding parameters will focus on two types: those that control the quality of the compressed image and those that control access to it. While it is convenient to classify the parameters this way, several of them, such as the number of resolution levels, affect both quality and access. The paper will also describe these linkages.
Conclusion: This paper will report on the practical use of JPEG2000 data and files in an OAIS-based image archiving system, with a special focus on the choices made for JPEG2000 content in the Archival Information Package, and how they affect downstream performance when content is disseminated to the consumer in the OAIS model.
References
1. ISO 14721:2003, Space data and information transfer systems -- Open archival information system -- Reference model; also available as CCSDS 650.0-B-1, CCSDS RECOMMENDATION FOR AN OAIS REFERENCE MODEL, January 2002
2. ISO/IEC 15444-1:2004, Information technology -- JPEG 2000 image coding system: Core coding system
3. R. Buckley & F. Frey, Preserving Images, oe Magazine, January 2004
4. ISO/IEC 15444-6:2003, Information technology -- JPEG 2000 image coding system -- Part 6: Compound image file format
5.R. Buckley & R. Sam, JPEG 2000 Profile for the National Digital Newspaper Program, April 2006, http://www.loc.gov/ndnp/pdf/NDNP_JP2HistNewsProfile.pdf
|
90th Canadian Chemistry Conference & Exhibition
May 26 - 31
, Winnipeg, Manitoba
Title: An Industry's Perspective of Polymer Education - How well prepared are undergraduate students?
Speakers: V. Farrugia, K. Moffat, H. Hg P. Burns
Abstract: Researchers at the Xerox Research Center of Canada (XRCC) value and rely heavily on the contribution of undergraduate Chemistry and Chemical Engineering students in key research projects. Industries such as Xerox depend on the universities to gear their curriculum towards relevant and up-to-date topics that will be beneficial to both the student and the employer. A large portion of the research at XRCC focuses around polymer science and chemical engineering. Students are employed to work side-by-side with chemists or engineers for four to eight months on many important polymer related projects. The initial on-the-job training requires a great deal of time tutoring the student to provide them the necessary knowledge to perform their job. This talk will encompass the various aspects of polymer education important to industry and how they are applied within a real work environment.
|
The Application of Microreactor Technology to a Buchwald-Hartwig Amination
May 28
, Winnipeg, Manitoba
SPEAKERS: Brian Worfolk, Emily Moore,Jenn Coggan ABSTRACT: Printed transistor circuits using solution-based materials represent low-cost alternatives to silicon-based technologies for large-area, flexible electronics. In this talk, we will use our polythiophenes as examples to discuss the approaches to optimizing transistor performance, including molecule design, synthesis methods, device structure design, and interface optimization.
|
An Industry?s Perspective of Polymer Education ? How well prepared are undergraduate students?
May 30
, Winnipeg, Manitoba
SPEAKERS: Valerie Farrugia, Karen Moffat, Hwee Ng and Patricia Burns ABSTRACT: Technical detail will be very high level and related to polymer chemistry done at XRCC. It will only describe general chemistry we may use and types of measurements we do. The talk may also cover high level chemical engineering topics such as extrusion.
|
SRI Symposium (Services Research & Innovation Initiative)
May 30
, Santa Clara, CA
Sophie Vandebroek, Keynote
|
June
Discussion with George Whiteside
June 1
, Prof. George Whiteside?s Lab, Harvard University
AUTHOR: Rick Veregin
ABSTRACT: Highlights my published work understanding triboelectrification over the last 10 years or so. The material has been previously disclosed at NIP meetings between 1995 and 2006.
|
NanoForum Canada: Metal nanoparticles as printable conductors for organic thin film transistors
June 18
, NanoForum Canada, University of Waterloo, Waterloo, Canada
SPEAKERS: Yuning Li, Yiliang, Wu, Beng S. Ong ABSTRACT: Printed thin film transistors (TFTs) have received much attention in recent years as they are promising low cost alternatives to silicon technology for applications in for example active-matrix LCDs, organic light emitting diodes, e-paper, radio frequency identification tags (RFIDs), etc. Recent advances in semiconductor design and device optimization have led to TFT performance approaching or even exceeding those of amorphous silicon counterparts. However, as a critical component of printed TFTs, conductive materials with the required conductivity, stability, printability, and compatibility with semiconductors still remain a synthetic challenge. To address this issue, we have utilized soluble metal (gold and silver) nanoparticles as printable precursors to conductors for TFT applications. Due to their small size, the metal nanoparticles tend to coalesce at relatively low temperatures (120 - 200 °C). This unique property allows a coated nanoparticle thin film to be converted to a highly conductive thin film upon annealing at a temperature which is compatible with common plastic substrates. Specifically, alkylthiol-stabilized gold nanoparticles and alkylamine-stabilized silver nanoparticles were proven excellent printable conductors for solution-processed TFTs. Using poly(3,3¢¢¢ -didodecylquarterthiophene) (PQT-12) as a channel semiconductor, the solution-processed TFT devices using source/drain electrodes fabricated from metal nanoparticles exhibited performance characteristics identical to those with vacuum deposited metal source/drain electrodes.
|
July
34th International Colloquium on Automata, Languages and Programming (ICALP 2007)
July 9 - 14
, Warsaw, Poland
Speaker: Daniel Manchala
Topic: Extended Visual Cryptography Schemes for Multi-Secrets with Participants on a Graph
Abstract: In this paper, we consider a new visual cryptography scheme that allows for sharing of multiple secret images. Visual cryptography was introduced as means to secretly share images where each share is printed on a transparency. (Recall that the benefits of such schemes is that no electronic apparatus is required in the reconstruction of the secret; indeed, the participants may simply overlap the transparencies to recover the secret.) Previous works involved an authority sharing a single secret image among the participants. We consider the following setting: we are given an arbitrary graph (V,E) where every node and every edge are assigned an arbitrary image.
Images on the vertices are "public" and images on the edges are "secret". The problem that we are considering is that every vertex image is encoded and printed on a transparency, such that if two transparencies are overlapped, the secret image corresponding to that edge is revealed. We define the most stringent security guarantees for this problem (perfect secrecy) and show a general construction for all graphs where the cost (in terms of pixel expansion and contrast of the images) is proportional to the chromatic number of the cube of the underlying graph. For the case of bounded degree graphs, this gives us constant-factor pixel expansion and contrast.
|
August
A Semi-automatic System with an Iterative Learning Method for Discovering the Leading Indicators in Business Processes
August 12
, San Jose, CA
SPEAKERS: Wei Peng, Tong Sun, Philip Rose, Tao Li ABSTRACT: Within Business Intelligence (BI) systems, a Key Performance Indicator (KPI) is a specific metric (a quantitative, periodic measurement of one or more processes), chosen from all of the collected or possible metrics within a business in such a manner as to convey the most amount of information in a single measurement - the "key" measurement. As such, it is a measurement of how well the organization, or a specific individual or process within that organization, performs an operational, tactical, or strategic activity that is critical for the current and future success of that organization [1]. The leading indicators are one type of KPI that present key drivers of business value, are predictors of future outcomes, and offer to the organization the unique opportunity to positively effect, or properly plan for, the future. Therefore, creating effective KPIs are critical to the success of any business organization. However, identifying leading indicators is often non-trivial, not only it requires months in collecting requirements, standardizing definitions and rules, prioritizing metrics, and soliciting feedback, etc.., in a process which is labor-intensive and error-prone, but also because the time shifts between the leading indicators and the corresponding affected lagging indicators are vague and domain specific. In this paper, we propose a semi-automatic system with an iterative learning process for analyzing operational metrics, factoring out the key performance indicators (KPIs) and then further discovering leading indicators by applying data mining techniques incorporated with the domain knowledge. Two case studies are also conducted by applying the proposed methods in the production printing domain. Compared with the traditional analytic capabilities in most existing BI systems, the proposed system has two key differentiations and novelties: (1) the semi-automatic framework simplifies many traditional labor-intensive and error-prone steps through the application of temporal data mining techniques (e.g. dynamic time warping, Granger Causality, adaptive agglomerative clustering) combined with specific domain knowledge, thus enabling timely access to operational metrics, KPI analysis, and powerful leading indicator discovery; (2) an iterative learning methodology not only continuingly uncovers the "root" leading indicators, but also enables the flexibility and adaptability for metric updates and additional data collection points.
|
High-Performing Thiophene-based Polymers Design for Thin Film Transistor Application
August 26
, Glen House Resort, Gananoque, Ontario
SPEAKERS: Yuning Li, Yiliang Wu, Ping Liu, Hualong Pan, Beng S. Ong ABSTRACT:This presentation will discuss the design, synthesis, and characterization of a series of thiophene-based polymers as p-type semiconductors for organic thin film transistors application.
|
September
2007 IDETC (DEPTC 2007): System Archictecture Research - Perspective from the Academia and Industry
September 6
, Rio All-Suite Hotel & Casino, Las Vegas, Nevada
SPEAKER: Eun Suk Suh ABSTRACT: Panelists consists of recent graduates who have been working in the industry for last two to three years, who will be talking about their research topics in school, and how it is helping them with their industry career. Panel members represent various companies from different industries, including Xerox Corporation, General Motors Corporation, Cummins Inc., and Intelligent Automation Inc.
|
19th Annual International Women's Conference
September 14 - 16
, Rochester, New York
TITLE: Forging New Frontiers KEYNOTE SPEAKER: Anne Mulcahy, Xerox, Chairman & CEO (Tours of Cerox's Gil Hatch Customer Innovation Center and EA Toner Plant)
|
NIP23: Electrical Properties of a Magnetic Brush Using a High Resolution Field Probe
September 17
, Anchorage, Alaska
SPEAKER: Michael Thompson, Paul Morehouse, Paighat Ramesh & John Shaw ABSTRACT: Dry powder xerographic marking systems are capable of high quality printing but there is still need to improve their capabilities to better compete in offset markets. Many of these systems use two component magnetic brush technology to develop latent electrostatic images. The electrical properties of the developer material which makes up the magnetic brush play a large role in the quality of the developed image. Our desire to improve image quality characteristics affected by development has led us to explore the magnetic brush in more detail. We have used a high resolution electric field probe to characterize the dielectric constant and conductivity of a two component developer in a magnetic brush. Standard techniques use large area cells which look at the integrated properties of the developer material and cannot resolve variations at the spatial scales that are relevant for image uniformity. Magnetic brush structure is likely to translate into local electric field variation during the development process producing variations in toned image density on the photoreceptor and ultimately in the final printed image. Variations in electrical properties due to position in the development zone and magnetic field are looked at and discussed in the context of image quality. Realistic particle simulations are compared to experimental data.
|
International Conference - RANLP - 2007
September 27 - 29
, Borovets, Bulgaria
Recent Advances in Natural Language Processing RANLP conference 2007.
Special Xerox award for the best RANLP paper authored by young researcher(s) on this topic. Frédérique Segond, XRCE Area Manager, Parsing & Semantics will participate in the conference and will give the award to the student(s) who will present the best semantic processing paper at RANLP 2007
|
October
EPIC: Giving Voice to Print Shop Workers
October 3
, EPIC, Keystone Resort, Colorado
SPEAKERS: Jennifer Perolti, Mary Ann Sprague, Nathaniel Martini, Patricia Wall ABSTRACT: This paper presents findings from an ethnographic study of digital production printing work practices, with a focus on a complex, labor intensive print job. Respresenting actual work practices in the streamlining of a labor intensive production print job.
|
EPIC: Viral Ethnography: Spreading the Word about Digital Printing Work Practices
October 4
, Keystone Resort, Colorado
SPEAKERS: Mary Ann Sprague, Geoff Woolfe, Jennifer Periotti, J O'Neill, T. Columbino, D. Martin ABSTRACT: Review the observation of digital printing acceptable color ethnography and the transfer of information within the company and the resulting efforts from that information.
|
Development of Thiophene-based Polymeric Semiconductors for Printed Thin-Film Transistors
October 7
, 212th Electrochemical Society?s Symposium on ?Organic Semiconductor Materials and Devices? (Washington, DC
SPEAKERS:Yiliang Wu, Yuning Li, Ping Liu, Hualong Pan, Beng Ong ABSTRACT: Printed transistor circuits using solution-based materials represent low-cost alternatives to silicon-based technologies for large-area, flexible electronics. In this talk, we will use our polythiophenes as examples to discuss the approaches to optimizing transistor performance, including molecule design, synthesis methods, device structure design, and interface optimization.
|
|
|
|
|
