Michael Siegel

The ACS Survey of Galactic Globular Clusters. IX. Horizontal Branch Morphology and the Second Parameter Phenomenon (2009)

Dotter, Aaron, Sarajedini, Ata, Anderson, Jay, Aparicio, Antonio, Bedin, Luigi R., Chaboyer, Brian, ...

The horizontal branch (HB) morphology of globular clusters (GCs) is most strongly influenced by metallicity. The second parameter phenomenon acknowledges that metallicity alone is not enough to...

Adaptability, Extensibility, and Scalability of the Context Mediation Approach (2009)

Thomas Gannon, Michael Siegel, Marwan Sabbouh, Hongwei Zhu, Mitre Coporation, Thomas Gannon, ...

There is pressing need for effectively integrating information from an ever increasing number of available sources both on the web and in other existing systems. A key difficulty of achieving this...

The ACS Survey of Galactic Globular Clusters. VII. Relative Ages (2008)

Marin-Franch, Antonio, Aparicio, Antonio, Piotto, Giampaolo, Rosenberg, Alfred, Chaboyer, Brian, Sarajedini, Ata, ...

The ACS Survey of Galactic Globular Clusters is a Hubble Space Telescope (HST) Treasury program designed to provide a new large, deep and homogeneous photometric database. Based on observations from...

Terahertz heterodyne receiver with quantum cascade laser and hot electron bolometer mixer in a pulse tube cooler (2008)

Richter, Heiko, Semenov, Alexei, Pavlov, Sergei, Mahler, Lukas, Tredicucci, Alessandro, Beere, Harvey E., ...

A liquid cryogen free terahertz (THz) heterodyne receiver in a pulse tube cooler has been realized. The receiver operates at 2.5 THz. It is based on a quantum cascade laser (QCL) as local oscillator...

COntext INterchange (COIN) System Demonstration (2008)

Aykut Firat, M. Bilal Kaleem, Philip Lee, Stuart Madnick, Allen Moulton, Michael Siegel, ...

Abstract. The Context Interchange (COIN) System provides tools for representing, processing, and reconciling heterogeneous data semantics. In this demonstration we show how COIN can be used to...

Improved energy resolution of a superconducting single-photon detector (2008)

Semenov, Alexey, Haas, Philipp, Hübers, Heinz-Wilhelm, Ilin, Konstantin, Siegel, Michael, Kirste, Alexander, ...

We demonstrated successful operation of an NbN single photon detector in the temperature range from 6 K to 1.2 K using a 3He sorption refrigerator combined with a pulse-tube mechanical cooler. The...

An ACS Survey of Globular Clusters V: Star Catalog for Each Cluster (2008)

Anderson, Jay, Sarajedini, Ata, Bedin, Luigi R., King, Ivan R., Piotto, Giampaolo, Reid, I. Neill, ...

The ACS Survey of Globular Clusters has used HST's Wide-Field Channel to obtain uniform imaging of 65 of the nearest globular clusters to provide an extensive homogeneous dataset for a broad range of...

Published in collaboration with the British Computer Society Relaxing Property Preservation in the Refinement of Concurrent Systems (2008)

Series Professor, C. J. Rijsbergen, D. J. Duke, M. Siegel, Michael Siegel

One of the major development strategies for concurrent systems suggests to start the system development from a socalled functional design of the envisaged system and to distribute/parallelize this...

Current-induced critical state in NbN thin-film structures (2008)

Ilin, Konstantin, Siegel, Michael, Engel, Andreas, Bartolf, Holger, Schilling, Andreas, Semenov, Alexey, ...

The temperature dependence of the critical current of NbN thin-film bridges was experimentally studied. At low temperatures we observed significant enhancement (up to two times at 4 K) of the...

Energy resolution of a superconducting nanowire single-photon detector (2008)

Semenov, Alexey, Haas, Philipp, Günther, Burdhardt, Hübers, Heinz-Wilhelm, Ilin, Konstantin, Siegel, Michael

An energy resolution of 0.6 eV was achieved with an NbN superconducting nanowire single-photon detector for near infrared photons in the energy range from 1.2 eV to 0.8 eV. The detector operates at 6...

Vortex-based single-photon response in nanostructured superconducting detectors (2008)

Semenov, Alexey, Haas, Philipp, Hübers, Heinz-Wilhelm, Ilin, Konstantin, Siegel, Michael, Kirste, Alexander, ...

In nanostructured superconducting films interaction of magnetic vortices with radiation quanta provides an additional mechanism of radiation detection. Below the Kosterlitz–Thouless topological...

Temperature- and field-dependence of critical currents in NbN microbridges (2008)

Engel, Andreas, Bartolf, Holger, Schilling, Andreas, Ilin, Konstantin, Siegel, Michael, Semenov, Alexei, ...

We report measurements of the critical current of nano- and micrometer-sized NbN bridges as a function of temperature and magnetic eld. The bridges were fabricated from 4 to 10 nm thick, sputtered...

Ultra-thin NbN films on Si: crystalline and superconducting properties (2008)

Ilin, Konstantin, Schneider, R, Gerthsen, D, Engel, Andreas, Bartolf, Holger, Schilling, Andreas, ...

We present results on superconducting and crystalline properties of NbN films with a thickness smaller than 10 nm. The films were deposited using reactive magnetron sputtering on heated silicon...

AND (2008)

Michael Siegel, Russel E. Caflisch, Sam Howison

The Muskat, or Muskat-Leibenzon, problem describes the evolution of the interface between two immiscible fluids in a porous medium or Hele-Shaw cell under applied pressure gradients or fluid...

Context Interchange: New Features and Formalisms for the Intelligent Integration of Information (2008)

Cheng Hian, Stephane Bressan, Stuart Madnick, Michael Siegel

ing with credit is permitted. To copy otherwise, to republish, to post on servers, to redistribute to lists, or to use any component of this work in other works, requires prior specific permission...

Enabling Global Price Comparison through Semantic Integration of Web Data (2008)

Zhu, Hongwei, Siegel, Michael, Madnick, Stuart

“Sell Globally” and “Shop Globally” have been seen as a potential benefit of web-enabled electronic business. One important step toward realizing this benefit is to know how things are...

Enabling Global Price Comparison through Semantic Integration of Web Data (2008)

Zhu, Hongwei, Siegel, Michael, Madnick, Stuart

“Sell Globally” and “Shop Globally” have been seen as a potential benefit of web-enabled electronic business. One important step toward realizing this benefit is to know how things are...

The House of Security: Stakeholder Perceptions of Security Assessment and Importance (2007)

Ang, Wee Horng, Deng, Vicki, Lee, Yang, Madnick, Stuart, Mistree, Dinsha, Siegel, Michael, ...

In this paper we introduce a methodology for analyzing differences regarding security perceptions within and between stakeholders, and the elements which affect these perceptions. We have designed...

Using System Dynamics to Model and Better Understand State Stability (2007)

Choucri, Nazli, Goldsmith, Daniel, Madnick, Stuart E., Mistree, Dinsha, Morrison, J. Bradley, Siegel, Michael

The world can be complex and dangerous - the loss of state stability of countries is of increasing concern. Although every case is unique, there are important common processes. We have developed a...

Using System Dynamics to Model and Better Understand State Stability (2007)

Choucri, Nazli, Goldsmith, Daniel, Madnick, Stuart E., Mistree, Dinsha, Morrison, J. Bradley, Siegel, Michael

The world can be complex and dangerous - the loss of state stability of countries is of increasing concern. Although every case is unique, there are important common processes. We have developed a...

The House of Security: Stakeholder Perceptions of Security Assessment and Importance (2007)

Ang, Wee Horng, Deng, Vicki, Lee, Yang, Madnick, Stuart, Mistree, Dinsha, Siegel, Michael, ...

In this paper we introduce a methodology for analyzing differences regarding security perceptions within and between stakeholders, and the elements which affect these perceptions. We have designed...

Influence of surfactant on rounded and pointed bubbles in 2-D Stokes flow (2007)

Michael Siegel

A simple plane #ow model is used to examine the e#ects of surfactant on bubbles evolving in slow viscous #ow. General properties of the timedependentevolution as well as exact solutions for the...

Cusp formation for evolving bubbles in 2-D Stokes flow: the effect of variable surface tension (2007)

Michael Siegel

Analytical and numerical methods are applied to investigate the e#ect of variable surface tension, induced by the presence of surfactant, on a bubble evolving in 2-D Stokes #ow. The evolution is...

Challenges in Making Context Interchange Part of the Semantic Web (2007)

Michael Siegel, Aykut Firat, Hongwei Zhu

The popularity and growth of the Web have dramatically increased the number of information sources available for use and the opportunity for important new information-intensive applications

Towards efficient model checking Statecharts: (2007)

Statecharts To Promela, A Statecharts, Promela Complier, Erich Mikk, Yassine Lakhnech, Michael Siegel

In terms of compiler construction our semantics definition [MLPS97]maybe seen as a compiling specification where the source is a statechart specification and the target is a finite state machine....

COntext INterchange (COIN) System Demonstration (2007)

Aykut Firat Aykut, M. Bilal Kaleem, Philip Lee, Stuart Madnick, Allen Moulton, Michael Siegel, ...

The Context Interchange (COIN) System provides tools for representing, processing, and reconciling heterogeneous data semantics. In this demonstration we show how COIN can be used to automatically...

Is the tobacco control movement misrepresenting the acute cardiovascular health effects of secondhand smoke exposure? An analysis of the scientific evidence and commentary on the implications for tobacco control and public health practice (2007)

Siegel, Michael

Abstract While chronic exposure to secondhand smoke has been well recognized as a cause of heart disease in nonsmokers, there has been recent speculation about the potential acute cardiovascular...

Intermediate Frequency Bandwidth of a Hot-Electron Mixer: Comparison with Bolometric Models (2007)

Semenov, Alexei, Richter, Heiko, Pavlov, Sergey, Hübers, Heinz-Wilhelm, Il'in, Konstantin, Siegel, Michael, ...

The gain bandwidth of a superconducting NbN hot-electron mixer quasioptically coupled to radiation was evaluated in different operation conditions and compared to presently known bolometric mixer...

An energy-resolving superconducting nanowire photon counter (2007)

Semenov, Alexey, Haas, Philipp, Günther, Burghardt, Hübers, Heinz-Wilhelm, Il'in, Konstantin, Siegel, Michael, ...

We report on the energy-resolving capability of a superconducting NbN nanowire photon counter, which is read out by a superconducting quantum interference device. For counters operated at 6.5 K, a...

Spectral Sensistivity and Spectral Resolution of Superconducting Single-Photon Detectors (2007)

Haas, Philipp Moritz, Semenov, Alexei, Hübers, Heinz-Wilhelm, Beyer, Jörn, Kirste, Alexander, Schurig, Thomas, ...

Single photon detectors based on meanders from 5-nm thin B1 niobium nitride nanostrips show moderate spectral resolution along with the spectral cut-off of the quantum efficiency occurring in the...

Energy resolution and sensitivity of a superconducting quantum detector (2007)

Semenov, Alexey, Haas, Philipp, Il'in, Konstantin, Hübers, Heinz-Wilhelm, Siegel, Michael, Engel, Andreas, ...

Single-photon detectors from thin niobium nitride nanostrips show moderate energy resolution along with the cut-off of the quantum efficiency in the near-infrared spectral range. To describe the...

Energy resolution and sensitivity of a superconducting quantum detector (2007)

Semenov, Alexey, Haas, Philipp, Ilin, Konstantin, Hübers, Heinz-Wilhelm, Siegel, Michael, Engel, Andreas, ...

Single-photon detectors from thin niobium nitride nanostrips show moderate energy resolution along with the cut-off of the quantum efficiency in the near-infrared spectral range. To describe the...

Terahertz performance of integrated lens antennas with a hot-electron bolometer (2007)

Semenov, Alexey, Richter, Heiko, Hübers, Heinz-Wilhelm, Günther, Burghardt, Smirnov, Andrey, Ilin, Konstantin, ...

Radiation coupling efficiency and directive properties of integrated lens antennas with log-spiral, log-periodic and double-slot planar feeds coupled to a hot-electron bolometer were experimentally...

Stakeholder Perceptions of Security Assessment and Importance (2007)

Wee Horng Ang, Vicki Deng, Yang Lee, Stuart Madnick, Dinsha Mistree, Michael Siegel, ...

In this paper we introduce a methodology for analyzing differences regarding security perceptions within and between stakeholders, and the elements which affect these perceptions. We have designed...

Electric noise and local photon-induced nonequilibrium states in a current-carrying nanostructured superconductor (2006)

Engel, Andreas, Semenov, Alexey, Hübers, Heinz-Wilhelm, Il'in, Konstantin, Siegel, Michael

Superconducting thin films and micro- and nanostructured superconducting elements have enormous potential for applications in electronics and as highly sensitive detectors. We present recent studies...

Energieauflösung und spektrale Empfindlichkeit supraleitender Einzelphotonenzähler (2006)

Haas, Philipp Moritz, Semenov, Alexei, Hübers, Heinz-Wilhelm, Beyer, Jörn, Kirste, Alexander, Schurig, Thomas, ...

Hochempfindliche, ultraschnelle NbN-Einzelphotonenzähler, basierend auf der kurzzeitigen bias-stromunterstützten Ausbildung eines normal leitenden Bereichs (Hot-Spot) durch Photonenabsorption in...

Schnelle, auf dem elektronischen Nichtgleichgewicht in supraleitenden dünnen Schichten basierende Detektoren (2006)

Semenov, Alexey, Hübers, Heinz-Wilhelm, Il'in, Konstantin, Siegel, Michael

Auf dem elektronischen Nichtgleichgewicht basierende Detektoren sind wegen ihrer hohen Empfindlichkeit und Schnelligkeit bereits wichtiger Bestandteil vieler Anwendungen in Astronomie und...

Superconducting-normal metal bi-layers for antenna structures of hot-elektron detector (2006)

Stockhausen, Axel, Neuhaus, Manfred, Stassen, Alexander, Il'in, Konstantin, Siegel, Michael, Semenov, Alexey, ...

We have developed a quasi-optical version of a superconducting hot-electron detector (HED) suitable for application in the THz frequency range based on a sub-micron bridge made from ultra-thin...

NbN ultra-thin film Hot-Electron Detector for THZ application: Fabrication issues (2006)

Il'in, Konstantin, Stockhausen, Axel, Neuhaus, Manfred, Wermund, Hans-Jürgen, Siegel, Michael, Semenov, Alexey, ...

Superconducting Hot-Electron Detector (HED) is one of promising devices for a wide range of THz applications: astronomy, spectroscopy, imaging, and security. Actually HED is a rectangular strip of...

Evidence of non-bolometric mixing in the bandwidth of a hot-electron bolometer (2006)

Semenov, Alexey, Il'in, Konstantin, Siegel, Michael, Smirnov, Andrey, Pavlov, Sergey, Richter, Heiko, ...

The gain bandwidth of a superconducting NbN hot-electron mixer was measured at local oscillator (LO) frequencies 2.5 THz, 0.6 THz and 0.3 THz and compared to presently known bolometric mixer models....

Fluctuation effects in superconducting nanostrips (2006)

Engel, Andreas, Semenov, Alexey, Hübers, Heinz-Wilhelm, Il'in, Konstantin, Siegel, Michael

Superconducting fluctuations in long and narrow strips made from ultrathin NbN films, have been investigated. For large bias currents close to the critical current fluctuations led to localized,...

Noise Bolometer for Terahertz Waves (2006)

Semenov, Alexey, Richter, Heiko, Hübers, Heinz-Wilhelm, Il'in, Konstantin, Siegel, Michael

An advantage of superconducting detectors is a much lower noise in comparison to their semiconductor counterparts. We have studied the magnitude and spectrum of electric noise in thin superconducting...

Passive Terahertz Wave Imaging with a Single Bolometer and with a Bolometer Array (2006)

Semenov, Alexey, Richter, Heiko, Hübers, Heinz-WIlhelm, Zakosarenko, Vjatcheslav, May, Torsten, Anders, Susanne, ...

Detection of concealed threats like guns, knifes or explosives is of prime importance at airports and other public places. Passive millimetre wave (mmW) imagers operating at frequencies up to almost...

Passive Terahertz Wave Imaging of Concealed Threats with a Single Semiconductor Bolometer and an Array of Superconducting Bolometers (2006)

Semenov, Alexey, Richter, Heiko, Hübers, Heinz-Wilhelm, Zakosarenko, Vjatcheslav, May, Torsten, Anders, Susanne, ...

Detection of concealed threats is of prime importance for public security. In short range applications, passive imagers operating at millimeter wavelengths have been demonstrated to fulfill this...

A preliminary study of peer-to-peer human-robot interaction (2006)

Terrence Fong, Jean Scholtz, Julie A. Shah, Lorenzo Flückiger, Clayton Kunz, David Lees, ...

HRI) project is developing techniques to improve task coordination and collaboration between human and robot partners. Our work is motivated by the need to develop effective human-robot teams for...

A preliminary study of peer-to-peer human-robot interaction (2006)

Terrence Fong, Jean Scholtz, Julie A. Shah, Lorenzo Flückiger, Clayton Kunz, David Lees, ...

HRI) project is developing techniques to improve task coordination and collaboration between human and robot partners. Our work is motivated by the need to develop effective human-robot teams for...

Spectral cut-off in the efficiency of the resistive state formation caused by absorption of a single-photon in current-carrying superconducting nano-strips (2005)

Semenov, Alexey, Engel, Andreas, Hübers, Heinz-Wilhelm, Il´in, Konstantin, Siegel, Michael

We have studied supercurrent-assisted formation of the resistive state in nano-structured disordered superconducting Nb(N) films after absorption of a single optical to near-infrared photon. The...

Superconducting noise bolometer for terahertz radiation (2005)

Semenov, Alexey, Richter, Heiko, Hübers, Heinz-Wilhelm, Il'in, Konstantin, Siegel, Michael

We present a superconducting noise bolometer that is a bolometric detector sensing radiation via radiation-induced changes of its own microwave noise. The detector represents a nano-strip made from a...

Semantic Information Integration in the Large: Adaptability, Extensibility, and Scalability of the Context Mediation Approach (2005)

Gannon, Thomas, Madnick, Stuart, Moulton, Allen, Siegel, Michael, Sabbouh, Marwan, Zhu, Hongwei

There is pressing need for effectively integrating information from an ever increasing number of available sources both on the web and in other existing systems. A key difficulty of achieving this...

Semantic Information Integration in the Large: Adaptability, Extensibility, and Scalability of the Context Mediation Approach (2005)

Gannon, Thomas, Madnick, Stuart, Moulton, Allen, Siegel, Michael, Sabbouh, Marwan, Zhu, Hongwei

There is pressing need for effectively integrating information from an ever increasing number of available sources both on the web and in other existing systems. A key difficulty of achieving this...

Noise of a superconducting photon detector (2005)

Semenov, Alexey, Engel, Andreas, Hübers, Heinz-Wilhelm, Il´in, Konstantin, Siegel, Michael

We have studied electrical noise of photon detectors representing long and narrow superconducting strips. For large bias currents close to the critical current fluctuations lead to localized,...

Ultra-thin NBN and TiN films for radiation sensors (2005)

Il´in, Konstantin, Siegel, Michael, Semenov, Alexey, Hübers, Heinz-Wilhelm, Hollmann, Evgeny

Ultra-thin superconducting films are widely used for fabrication of modern radiation sensors. The advantages of the superconductor based devices are a low noise level, an outstanding sensitivity and...

Current-noise superconducting bolometer for terahertz waves (2005)

Semenov, Alexey, Richter, Heiko, Hübers, Heinz-Wilhelm, Il´in, Konstantin, Siegel, Michael, Engel, Andreas

An advantage of superconducting detectors is a much lower noise in comparison to their semiconductor counterparts. We have studied the magnitude and spectrum of electric noise in thin superconducting...

Terahertz-Heterodynempfänger mit Quantenkaskadenlaser und supraleitendem Mischer (2005)

Semenov, Alexey, Richter, Heiko, Pavlov, Sergey, Hübers, Heinz-Wilhelm, Il´in, Konstantin, Siegel, Michael, ...

Die hochauflösende Spektroskopie atomarer und molekularer Emissions- und Absorptionslinien im Terahertz (THz)-Spektralbereich liefert Informationen über den stellaren-interstellaren Lebenszyklus...

Spectral performance of a single-photon detector (2005)

Semenov, Alexey, Engel, Andreas, Hübers, Heinz-WIlhelm, Il´in, Konstantin, Siegel, Michael

We have experimentally studied the supercurrent-assisted formation of the resistive state in nano-structured disordered superconducting Nb(N) films after absorption of a single optical to...

Semantic Information Integration in the Large: Adaptability, Extensibility, and Scalability of the Context Mediation Approach (2005)

Thomas Gannon, Michael Siegel, Marwan Sabbouh, Hongwei Zhu, Mitre Coporation, Thomas Gannon, ...

There is pressing need for effectively integrating information from an ever increasing number of available sources both on the web and in other existing systems. A key difficulty of achieving this...

Information Integration for Counter Terrorism Activities: The Requirement for Context Mediation (2004)

Choucri, Nazli, Madnick, Stuart, Moulton, Allen, Siegel, Michael, Zhu, Hongwei

The National Research Council has noted that although there are many private and public databases that contain information potentially relevant to counterterrorism programs, they lack the necessary...

Effective Data Integration in the Presence of Temporal Semantic Conflicts (2004)

Zhu, Hongwei, Madnick, Stuart, Siegel, Michael

The change in meaning of data over time poses significant challenges for the use of that data. These challenges exist in the use of an individual data source and are further compounded with the...

Global e-Readiness - For What? Readiness for e-Banking (JITD) (2004)

Maugis, V., Choucri, Nazli, Madnick, Stuart, Siegel, Michael, Gillett, Sharon, Haghseta, Farnaz, ...

With the rapid diffusion of the Internet worldwide, there has been considerable interest in the e-potentials of developing countries giving rise to a 1st generation of e-Readiness studies. Moreover,...

Improving National and Homeland Security through a proposed Laboratory for nformation Globalization and Harmonization Technologies (LIGHT) (2004)

Choucri, Nazli, Madnick, Stuart, Siegel, Michael, Wang, Richard

A recent National Research Council study found that: "Although there are many private and public databases that contain information potentially relevant to counter terrorism programs, they lack the...

Improving National and Homeland Security through a proposed Laboratory for nformation Globalization and Harmonization Technologies (LIGHT) (2004)

Choucri, Nazli, Madnick, Stuart, Siegel, Michael, Wang, Richard

A recent National Research Council study found that: "Although there are many private and public databases that contain information potentially relevant to counter terrorism programs, they lack the...

Global e-Readiness - For What? Readiness for e-Banking (JITD) (2004)

Maugis, V., Choucri, Nazli, Madnick, Stuart, Siegel, Michael, Gillett, Sharon, Haghseta, Farnaz, ...

With the rapid diffusion of the Internet worldwide, there has been considerable interest in the e-potentials of developing countries giving rise to a 1st generation of e-Readiness studies. Moreover,...

Effective Data Integration in the Presence of Temporal Semantic Conflicts (2004)

Zhu, Hongwei, Madnick, Stuart, Siegel, Michael

The change in meaning of data over time poses significant challenges for the use of that data. These challenges exist in the use of an individual data source and are further compounded with the...

Information Integration for Counter Terrorism Activities: The Requirement for Context Mediation (2004)

Choucri, Nazli, Madnick, Stuart, Moulton, Allen, Siegel, Michael, Zhu, Hongwei

The National Research Council has noted that although there are many private and public databases that contain information potentially relevant to counterterrorism programs, they lack the necessary...

Improving National and Homeland Security through a proposed Laboratory for Information Globalization and Harmonization Technologies (LIGHT) (2004)

Choucri, Nazli, Madnick, Stuart, Siegel, Michael, Wang, Richard

A recent National Research Council study found that: "Although there are many private and public databases that contain information potentially relevant to counter terrorism programs, they lack the...

Improving National and Homeland Security through a proposed Laboratory for Information Globalization and Harmonization Technologies (LIGHT) (2004)

Choucri, Nazli, Madnick, Stuart, Siegel, Michael, Wang, Richard

A recent National Research Council study found that: "Although there are many private and public databases that contain information potentially relevant to counter terrorism programs, they lack the...

Probability of the resistive state formation caused by absorption of a single-photon in current-carrying superconducting nano-strips (2004)

Semenov, Alexei, Engel, Andreas, Hübers, Heinz-Wilhelm, Ilin, Konstantin, Siegel, Michael

We have studied supercurrent-assisted formation of the resistive state in nano-structured Nb and NbN superconducting films after absorption of a single photon. In amorphous narrow NbN strips the...

A Semi-Analytic Approach to Euler Singularities (2004)

Caflisch, Russel E., Siegel, Michael

This paper reviews the efforts to construct (or prove the impossibility of) singular solutions of the Euler equations for three dimensional incompressible flow. A semi-analytic approach to this...

LIGHTS: Laboratory for Information Globalization and Harmonization Technologies and Studies (2004)

Choucri, Nazli, Madnick, Stuart, Siegel, Michael, Wang, Richard

Three important trends - unrelenting globalization, growing worldwide electronic connectivity, and increasing knowledge intensity of economic activity - are creating new opportunities for global...

LIGHTS: Laboratory for Information Globalization and Harmonization Technologies and Studies (2004)

Choucri, Nazli, Madnick, Stuart, Siegel, Michael, Wang, Richard

Three important trends - unrelenting globalization, growing worldwide electronic connectivity, and increasing knowledge intensity of economic activity - are creating new opportunities for global...

Global existence, singular solutions, and ill-posedness for the Muskat problem (2004)

Siegel, Michael, Caflisch, Russell E., Howison, Sam

The Muskat, or Muskat--Leibenzon, problem describes the evolution of the interface between two immiscible fluids in a porous medium or Hele-Shaw cell under applied pressure gradients or fluid...

Global existence, singular solutions, and ill-posedness for the Muskat problem (2004)

Siegel, Michael, Caflisch, Russell E., Howison, Sam

The Muskat, or Muskat--Leibenzon, problem describes the evolution of the interface between two immiscible fluids in a porous medium or Hele-Shaw cell under applied pressure gradients or fluid...

E-Aggregation: The Present and Future of Online Financial Services in Asia-Pacific (2003)

Fujii, Hiroshi, Okano, Taeko, Madnick, Stuart, Siegel, Michael

Many financial institutions have built websites to inform and attract customers. Financial aggregation present an opportunity by which they can build stronger relationships with customers. For...

Context Interchange Mediation for Semantic Interoperability and Dynamic Integration of Autonomous Information Sources in the Fixed Income Securities Industry (2003)

Siegel, Michael, Moulton, Allen, Madnick, Stuart

We examine semantic interoperability problems in the fixed income securities industry and propose a knowledge representation architecture for context interchange mediation to support dynamic...

Semantic Interoperability in the Fixed Income Securities Industry: A Knowledge Representation Architecture for Dynamic Integration of Web-Based Information (2003)

Moulton, Allen, Madnick, Stuart, Siegel, Michael

We examine a knowledge representation architecture to support context interchange mediation. For autonomous receivers and sources sharing a common subject domain, the mediator's reasoning engine can...

Global Comparison Aggregation Services (2003)

Zhu, Hongwei, Madnick, Stuart, Siegel, Michael

Web aggregation has been available regionally for several years, but this service has not been offered globally. As an example, using multiple regional comparison aggregators, we analyze the global...

Data Integration using Web Services (2003)

Hansen, Mark, Madnick, Stuart, Siegel, Michael

In this paper we examine the opportunities for data integration in the context of the emerging Web Services systems development paradigm. The paper introduces the programming standards associated...

Data Integration using Web Services (2003)

Hansen, Mark, Madnick, Stuart, Siegel, Michael

In this paper we examine the opportunities for data integration in the context of the emerging Web Services systems development paradigm. The paper introduces the programming standards associated...

Global Comparison Aggregation Services (2003)

Zhu, Hongwei, Madnick, Stuart, Siegel, Michael

Web aggregation has been available regionally for several years, but this service has not been offered globally. As an example, using multiple regional comparison aggregators, we analyze the global...

Semantic Interoperability in the Fixed Income Securities Industry: A Knowledge Representation Architecture for Dynamic Integration of Web-Based Information (2003)

Moulton, Allen, Madnick, Stuart, Siegel, Michael

We examine a knowledge representation architecture to support context interchange mediation. For autonomous receivers and sources sharing a common subject domain, the mediator's reasoning engine can...

Context Interchange Mediation for Semantic Interoperability and Dynamic Integration of Autonomous Information Sources in the Fixed Income Securities Industry (2003)

Siegel, Michael, Moulton, Allen, Madnick, Stuart

We examine semantic interoperability problems in the fixed income securities industry and propose a knowledge representation architecture for context interchange mediation to support dynamic...

E-Aggregation: The Present and Future of Online Financial Services in Asia-Pacific (2003)

Fujii, Hiroshi, Okano, Taeko, Madnick, Stuart, Siegel, Michael

Many financial institutions have built websites to inform and attract customers. Financial aggregation present an opportunity by which they can build stronger relationships with customers. For...

RETURN ON INVESTMENT FROM ONLINE BANKING SERVICES: AN ANALYSIS OF FINANCIAL ACCOUNT AGGREGATION (2003)

Siegel, Michael

The successful adoption of Financial Account Aggregation requires a careful analysis of the business model. The business model must be defined in a way that provides value to both customers and...

RETURN ON INVESTMENT FROM ONLINE BANKING SERVICES: AN ANALYSIS OF FINANCIAL ACCOUNT AGGREGATION (2003)

Siegel, Michael

The successful adoption of Financial Account Aggregation requires a careful analysis of the business model. The business model must be defined in a way that provides value to both customers and...

IBM PowerNP Network Processor : hardware, software and applications (2003)

Allen, James, Bass, Brian, Basso, Claude, Boivie, Rick, Calvignac, Jean, Davis, Gordon, ...

Deep packet processing is migrating to the edges of service provider networks to simplify and speed up core functions. On the other hand, the cores of such networks are migrating to the switching of...

LIGHTS: Laboratory for Information Globalization and Harmonization Technologies and Studies (2003)

Nazli Choucri, Michael Siegel, Richard Wang

Three important trends – unrelenting globalization, growing worldwide electronic connectivity, and increasing knowledge intensity of economic activity – are creating new opportunities for global...

Laboratory for Information Globalization and Harmonization (2002)

Madnick, Stuart, Choucri, Nazli, Siegel, Michael, Haghseta, Farnaz, Moulton, Allen, Zhu, Harry

The convergence of three distinct but interconnected trends - unrelenting globalization, growing worldwide electronic connectivity, and increasing knowledge intensity of economic activity - is...

Seizing the Opportunity: Exploiting Web Aggregation (2002)

Madnick, Stuart, Siegel, Michael

This paper examines the development of web aggregators, entities that collect information from a wide range of sources, with or without prior arrangements, and add value through post-aggregation...

Seizing the Opportunity: Exploiting Web Aggregation (2002)

Madnick, Stuart, Siegel, Michael

This paper examines the development of web aggregators, entities that collect information from a wide range of sources, with or without prior arrangements, and add value through post-aggregation...

Laboratory for Information Globalization and Harmonization (2002)

Madnick, Stuart, Choucri, Nazli, Siegel, Michael, Haghseta, Farnaz, Moulton, Allen, Zhu, Harry

The convergence of three distinct but interconnected trends - unrelenting globalization, growing worldwide electronic connectivity, and increasing knowledge intensity of economic activity - is...

Correctness Conditions for Highly Available Replicated Databases. (2002)

Lynch,Nancy, Blaustein,Barbara, Siegel,Michael

Correctness conditions are given which describe some of the properties exhibited by highly available distributed database systems such as the SHARD (System for Highly Available Replicated Data)...

M.: Process Aggregation Using Web Services (2002)

Mark Hansen, Mark Hansen, Stuart Madnick, Stuart Madnick, Michael Siegel, Michael Siegel

Abstract. This paper examines the opportunities and challenges related to data and process integration architectures in the context of Web Services. A primary goal of most enterprises in today’s...

Laboratory for Information Globalization and Harmonization Technologies: A New Research Initiative (2001)

Nazli Choucri, Stuart Madnick, Michael Siegel, Farnaz Haghseta, Allen Moulton, Harry Zhu

The convergence of three distinct but interconnected trends – unrelenting globalization, growing worldwide electronic connectivity, and increasing knowledge intensity of economic activity – is...

To appear in MISQ Executive. Seizing the Opportunity: Exploiting Web Aggregation (2001)

Stuart Madnick, Michael Siegel

This paper examines the development of web aggregators, entities that collect information from a wide range of sources, with or without prior arrangements, and add value through post-aggregation...

doi:10.1006/inco.2002.3175 The Small Model Property: How Small Can It Be? 1 (2001)

Amir Pnueli, Yoav Rodeh, Ofer Strichman, Michael Siegel

Efficient decision procedures for equality logic (quantifier-free predicate calculus + the equality sign) are of major importance when proving logical equivalence between systems. We introduce an...

Context knowledge representation and reasoning (2000)

Stephane Bressan, Cheng Goh, Natalia Levina, Stuart Madnick, Ahmed Shah, Michael Siegel

The Context Interchange Project presents a unique approach to the problem of semantic conflict resolution among multiple heterogeneous data sources. The system presents a semantically meaningful view...

Context knowledge representation and reasoning (2000)

Stephane Bressan, Cheng Goh, Natalia Levina, Stuart Madnick, Ahmed Shah, Michael Siegel

The Context Interchange Project presents a unique approach to the problem of semantic conflict resolution among multiple heterogeneous data sources. The system presents a semantically meaningful view...

The Caméléon Web Wrapper Engine (2000)

Aykut Firat, Stuart Madnick, Michael Siegel

The web is rapidly becoming the universal repository of information. A major challenge is the ability to support the effective flow of information among the sources and services on the web and their...

Information Integration With Attribution Support for Corporate Profiles (1999)

Thomas Lee, Stuart Madnick, Melanie Chams, Robert Nado, Michael Siegel

The proliferation of electronically available data within large organizations as well as publicly available data (e.g. over the World Wide Web) poses challenges for users who wish to efficiently...

Deciding Equality Formulas by Small Domains Instantiations (1999)

Amir Pnueli, Yoav Rodeh, Ofer Shtrichman, Michael Siegel

. We introduce an efficient decision procedure for the theory of equality based on finite instantiations. When using the finite instantiations method, it is a common practice to take a range of...

Context Interchange: New Features and Formalisms for the Intelligent Integration of Information (1999)

Cheng Hian Goh, Stephane Bressan, Stuart Madnick, Michael Siegel, Cheng Hian, Goh Stephane, ...

The context INterchange (COIN) strategy presents a novel perspective for mediated data access in which semantic conflicts among heterogeneous systems are not identified a priori, but are detected and...

A Well-Posed Numerical Method to Track Isolated Conformal Map Singularities in Hele-Shaw Flow. (1998)

Baker, Gregory, Siegel, Michael, Tanveer, Saleh

We present a new numerical method for calculating an evolving 2-D Hele-Shaw interface when surface tension effects are neglected. In the case where the flow is directed from the less viscous fluid...

Context Interchange: Using Knowledge About Data to Integrate Disparate Sources. (1998)

Madnick, Stuart, Siegel, Michael

The Context Interchange Project presents a unique approach to the problem of semantic conflict resolution among multiple heterogeneous data sources. The system presents a semantically meaningful view...

Implementing statecharts in Promela/Spin (1998)

Erich Mikk, Yassine Lakhnech, Michael Siegel

We translate statecharts into PROMELA, the input language of the SPIN verification system, using extended hierarchical automata as an intermediate format We discuss two possible frameworks for this...

The Economic Benefits of International Environmental Investments Establishing a Framework. (1997)

Brown, Douglas M., Siegel, Michael, Dellovade, Denise

The connection between the economy and the environment has generally remained unexplored. The Logistics Management Institute decided to investigate whether the indirect benefits of environmental...

On formal semantics of Statecharts as supported by statemate (1997)

Erich Mikk, Yassine Lakhnech, Carsta Petersohn, Michael Siegel

We formalize the rigorous but informal description of the semantics of statecharts given by Harel and Naamad in [3] which corresponds to the semantics underlying the commercial tool STATEMATE. We...

Breakup: The Breakdown of Universality (1997)

K. J. Friston, C. D. Frith, Hum Brain, D. J. Veltman, S. A. Rombouts, ...

A low-viscosity drop breaking apart inside a viscous fluid is encountered when air bubbles, entrained in thick syrup or honey, rise and break apart. Experiments, simulations, and theory show that the...

Using semantic values to facilitate interoperability among heterogeneous information systems (1994)

Michael Siegel, Michael Siegel, Edward Sciore, Arnon Rosenthal

Large organizations need to exchange information among many separately-developed systems. In order for this exchange to be useful, the individual systems must agree on the meaning of their exchanged...

The Productivity From Information Technology (PROFIT) Initiative was established (1994)

Jacob Lee, Michael D. Siegel, Rm E, Jacob Lee, Michael Siegel

study the use of information technology in both the private and public sectors and to enhance productivity in areas ranging from finance to transportation, and from manufacturing to...

Using semantic values to facilitate interoperability among heterogeneous information systems (1994)

Edward Sciore, Michael Siegel, Arnon Rosenthal

Large organizations need to exchange information among many separately developed systems. In order for this exchange to be useful, the individual systems must agree on the meaning of their exchanged...

Context Interchange: Sharing the Meaning of Data (1991)

Michael Siegel

Previously, users and application developers, through manuals and experience, understood the context of the few systems that served their portion of the enterprise. But the number, types, and...

Composite information systems: resolving semantic heterogeneities. Workshop on information technology systems (1991)

Michael Siegel, Michael Siegel, Michael Siegel, Stuart Madnick, Stuart Madnick, Stuart Madnick, ...

The Composite Information System/Tool Kit (CIS/TK) is a prototype implementation strategy for accessing and integrating data from multiple disparate database systems. This prototype focuses on data...

A metadata approach to resolving semantic conflicts (1991)

Michael Siegel

msiegelQsloan.mit.edu In this paper we describe a rule-based ap-proach to semantic specification that can be used to establish semantic agreement be-tween a source and receiver. Query process-ing...

Information Integration for Counter Terrorism Activities: The Requirement for Context Mediation

Choucri, Nazli, Madnick, Stuart, Moulton, Allen, Siegel, Michael, Zhu, Hongwei

The National Research Council has noted that although there are many private and public databases that contain information potentially relevant to counterterrorism programs, they lack the necessary...

Effective Data Integration in the Presence of Temporal Semantic Conflicts

Zhu, Hongwei, Madnick, Stuart, Siegel, Michael

The change in meaning of data over time poses significant challenges for the use of that data. These challenges exist in the use of an individual data source and are further compounded with the...

Global e-Readiness - For What? Readiness for e-Banking (JITD)

Maugis, V., Choucri, Nazli, Madnick, Stuart, Siegel, Michael, Gillett, Sharon, Haghseta, Farnaz, ...

With the rapid diffusion of the Internet worldwide, there has been considerable interest in the e-potentials of developing countries giving rise to a 1st generation of e-Readiness studies. Moreover,...

Semantic Information Integration in the Large: Adaptability, Extensibility, and Scalability of the Context Mediation Approach

Gannon, Thomas, Madnick, Stuart, Moulton, Allen, Siegel, Michael, Sabbouh, Marwan, Zhu, Hongwei

There is pressing need for effectively integrating information from an ever increasing number of available sources both on the web and in other existing systems. A key difficulty of achieving this...

Town-Level Characteristics and Smoking Policy Adoption in Massachusetts: Are Local Restaurant Smoking Regulations Fostering Disparities in Health Protection?

Skeer, Margie, George, Sarah, Hamilton, William L., Cheng, Debbie M., Siegel, Michael

Objectives. We identified and quantified differences in sociodemographic characteristics of communities relative to the strength of local restaurant smoking regulations in Massachusetts.

Effect of Local Restaurant Smoking Regulations on Environmental Tobacco Smoke Exposure Among Youths

Siegel, Michael, Albers, Alison B., Cheng, Debbie M., Biener, Lois, Rigotti, Nancy A.

Objectives. We examined the effect of local restaurant smoking regulations on restaurant environmental tobacco smoke exposure among youths.

Effects of Restaurant and Bar Smoking Regulations on Exposure to Environmental Tobacco Smoke Among Massachusetts Adults

Albers, Alison B., Siegel, Michael, Cheng, Debbie M., Rigotti, Nancy A., Biener, Lois

Objectives. We examined the association of local restaurant and bar regulations with self-reported exposure to environmental tobacco smoke among adults.

Town-Level Characteristics and Smoking Policy Adoption in Massachusetts: Are Local Restaurant Smoking Regulations Fostering Disparities in Health Protection?

Skeer, Margie, George, Sarah, Hamilton, William L., Cheng, Debbie M., Siegel, Michael

Objectives. We identified and quantified differences in sociodemographic characteristics of communities relative to the strength of local restaurant smoking regulations in Massachusetts.

Effect of Local Restaurant Smoking Regulations on Environmental Tobacco Smoke Exposure Among Youths

Siegel, Michael, Albers, Alison B., Cheng, Debbie M., Biener, Lois, Rigotti, Nancy A.

Objectives. We examined the effect of local restaurant smoking regulations on restaurant environmental tobacco smoke exposure among youths.

Effects of Restaurant and Bar Smoking Regulations on Exposure to Environmental Tobacco Smoke Among Massachusetts Adults

Albers, Alison B., Siegel, Michael, Cheng, Debbie M., Rigotti, Nancy A., Biener, Lois

Objectives. We examined the association of local restaurant and bar regulations with self-reported exposure to environmental tobacco smoke among adults.

Is the tobacco control movement misrepresenting the acute cardiovascular health effects of secondhand smoke exposure? An analysis of the scientific evidence and commentary on the implications for tobacco control and public health practice

Siegel, Michael

While chronic exposure to secondhand smoke has been well recognized as a cause of heart disease in nonsmokers, there has been recent speculation about the potential acute cardiovascular effects of...

Laboratory for Information Globalization and Harmonization

Madnick, Stuart, Choucri, Nazli, Siegel, Michael, Haghseta, Farnaz, Moulton, Allen, Zhu, Harry

The convergence of three distinct but interconnected trends - unrelenting globalization, growing worldwide electronic connectivity, and increasing knowledge intensity of economic activity - is...

Seizing the Opportunity: Exploiting Web Aggregation

Madnick, Stuart, Siegel, Michael

This paper examines the development of web aggregators, entities that collect information from a wide range of sources, with or without prior arrangements, and add value through post-aggregation...

RETURN ON INVESTMENT FROM ONLINE BANKING SERVICES: AN ANALYSIS OF FINANCIAL ACCOUNT AGGREGATION

Siegel, Michael

The successful adoption of Financial Account Aggregation requires a careful analysis of the business model. The business model must be defined in a way that provides value to both customers and...

E-Aggregation: The Present and Future of Online Financial Services in Asia-Pacific

Fujii, Hiroshi, Okano, Taeko, Madnick, Stuart, Siegel, Michael

Many financial institutions have built websites to inform and attract customers. Financial aggregation present an opportunity by which they can build stronger relationships with customers. For...

Context Interchange Mediation for Semantic Interoperability and Dynamic Integration of Autonomous Information Sources in the Fixed Income Securities Industry

Siegel, Michael, Moulton, Allen, Madnick, Stuart

We examine semantic interoperability problems in the fixed income securities industry and propose a knowledge representation architecture for context interchange mediation to support dynamic...

Semantic Interoperability in the Fixed Income Securities Industry: A Knowledge Representation Architecture for Dynamic Integration of Web-Based Information

Moulton, Allen, Madnick, Stuart, Siegel, Michael

We examine a knowledge representation architecture to support context interchange mediation. For autonomous receivers and sources sharing a common subject domain, the mediator's reasoning engine can...

Global Comparison Aggregation Services

Zhu, Hongwei, Madnick, Stuart, Siegel, Michael

Web aggregation has been available regionally for several years, but this service has not been offered globally. As an example, using multiple regional comparison aggregators, we analyze the global...

Data Integration using Web Services

Hansen, Mark, Madnick, Stuart, Siegel, Michael

In this paper we examine the opportunities for data integration in the context of the emerging Web Services systems development paradigm. The paper introduces the programming standards associated...

LIGHTS: Laboratory for Information Globalization and Harmonization Technologies and Studies

Choucri, Nazli, Madnick, Stuart, Siegel, Michael, Wang, Richard

Three important trends - unrelenting globalization, growing worldwide electronic connectivity, and increasing knowledge intensity of economic activity - are creating new opportunities for global...

Improving National and Homeland Security through a proposed Laboratory for nformation Globalization and Harmonization Technologies (LIGHT)

Choucri, Nazli, Madnick, Stuart, Siegel, Michael, Wang, Richard

A recent National Research Council study found that: "Although there are many private and public databases that contain information potentially relevant to counter terrorism programs, they lack the...

Improving National and Homeland Security through a proposed Laboratory for Information Globalization and Harmonization Technologies (LIGHT)

Choucri, Nazli, Madnick, Stuart, Siegel, Michael, Wang, Richard

A recent National Research Council study found that: "Although there are many private and public databases that contain information potentially relevant to counter terrorism programs, they lack the...

The House of Security: Stakeholder Perceptions of Security Assessment and Importance

Ang, Wee Horng, Deng, Vicki, Lee, Yang, Madnick, Stuart, Mistree, Dinsha, Siegel, Michael, ...

In this paper we introduce a methodology for analyzing differences regarding security perceptions within and between stakeholders, and the elements which affect these perceptions. We have designed...

Using System Dynamics to Model and Better Understand State Stability

Choucri, Nazli, Goldsmith, Daniel, Madnick, Stuart E., Mistree, Dinsha, Morrison, J. Bradley, Siegel, Michael

The world can be complex and dangerous - the loss of state stability of countries is of increasing concern. Although every case is unique, there are important common processes. We have developed a...

Enabling Global Price Comparison through Semantic Integration of Web Data

Zhu, Hongwei, Siegel, Michael, Madnick, Stuart

€ܓell Globally€ݠand €ܓhop Globally€ݠhave been seen as a potential benefit of web-enabled electronic business. One important step toward realizing this benefit is to know...

COMMENT-ALCOHOL ADVERTISING IN MAGAZINES AND YOUTH READERSHIP: ARE YOUTHS DISPROPORTIONATELY EXPOSED?

MICHAEL SIEGEL, CHARLES KING, JOSHUA OSTROFF, CRAIG ROSS, KAREN DIXON, DAVID H. JERNIGAN

"This article investigates the relationship between alcohol advertising in magazines and youth readership, while controlling for a set of magazine and readership variables related to the demand for...

Value at Risk: Implementing a Risk Measurement Standard

Christopher Marshall, Michael Siegel

In the wake of recent failures of risk management, there has been a widespread call for improved quantification of the financial risks facing firms. At the forefront of this clamor has been Value at...

Towards efficient model checking Statecharts: A Statecharts to Promela Complier

Erich Mikk, Yassine Lakhnech, Michael Siegel

the informal description [HN] in [MLPS97]. In [MLPS97] a transition system is associated to each statechart. In terms of compiler construction our semantics definition [MLPS97] may be seen as a...