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Temperature Induced Instabilities In Macro-Bend Fiber Based Wavelength Measurement Systems, Ginu Rajan, Yuliya Semenova, Pengfei Wang, Gerald Farrell May 2009

Temperature Induced Instabilities In Macro-Bend Fiber Based Wavelength Measurement Systems, Ginu Rajan, Yuliya Semenova, Pengfei Wang, Gerald Farrell

Articles

An investigation of temperature-induced instabilities in a wavelength measurement system based on macro-bend fiber filter used in the ratiometric scheme are presented. Two wavelength measurement systems based on macro-bend fiber, a standard low bend loss single-mode fiber filter based system and a high bend loss fiber filter based system are considered. In the case of a low bend loss fiber filter based system, the oscillatory variation in the ratio response with temperature and the difference in the temperature-induced ratio variation at different wavelengths makes the temperature corrected calibration of the system unfeasible, which is essential for precise wavelength measurements. The …


Land Virtues, Eduardo Peñalver May 2009

Land Virtues, Eduardo Peñalver

Articles

This Article has two goals. First, I explore some of the descriptive and normative limitations of certain law-and-economics discussions of the ownership and use of land. These market-centered approaches struggle in different ways with features of land that distinguish it from other "commodities." The complexity of land-its intrinsic complexity, but even more importantly the complex ways in which human beings interact with it-undermines the positive claim that owners will focus on a single value, such as market value, in making decisions about their land. Adding to the equation land's "memory," by which I mean the combined impact of the durability …


Breaking The Mould 2 : An Analysis Of Single-Leaf Insulation Upgrades, Joseph Little May 2009

Breaking The Mould 2 : An Analysis Of Single-Leaf Insulation Upgrades, Joseph Little

Articles

This article is the second in a series looking at thermal upgrades to single-leaf walls of existing houses. It compares a range of ways of upgrading masonry single-leaf walls, particularly the ubiquitous hollow block wall, and the impact of those decisions on moisture content, wind- and airtightness, cost and heating. Future articles will look at various drylining approaches for a range of walls including brick walls of various widths.


Evaluating The Impact Of Blade Server And Virtualization Software Technologies On The Rit Datacenter, Christopher Butler Apr 2009

Evaluating The Impact Of Blade Server And Virtualization Software Technologies On The Rit Datacenter, Christopher Butler

Articles

No abstract provided.


Do University Rankings Measure What Counts, Ellen Hazelkorn Apr 2009

Do University Rankings Measure What Counts, Ellen Hazelkorn

Articles

The article discusses the impact of rankings on higher education.


Algebraic Classification Of Numerical Spacetimes And Black-Hole-Binary Remnants, Manuela Campanelli, Carlos O. Lousto, Yosef Zlochower Apr 2009

Algebraic Classification Of Numerical Spacetimes And Black-Hole-Binary Remnants, Manuela Campanelli, Carlos O. Lousto, Yosef Zlochower

Articles

In this paper we develop a technique for determining the algebraic classification of a numerical spacetime, possibly resulting from a generic black-hole-binary merger, using the Newman-Penrose Weyl scalars. We demonstrate these techniques for a test case involving a close binary with arbitrarily oriented spins and unequal masses. We find that, post merger, the spacetime quickly approaches Petrov type II, and only approaches type D on much longer timescales. These techniques allow us to begin to explore the validity of the “no-hair theorem” for generic merging-black-hole spacetimes.


Reflection Contributions To The Dispersion Artefact In Ftir Spectra Of Single Biological Cells, Paul Bassan, Hugh Byrne, Joe Lee, Franck Bonnier, Colin Clarke, Paul Dumas, Ehsan Gazi, Michael Brown, Noel Clarke, Peter Gardner Apr 2009

Reflection Contributions To The Dispersion Artefact In Ftir Spectra Of Single Biological Cells, Paul Bassan, Hugh Byrne, Joe Lee, Franck Bonnier, Colin Clarke, Paul Dumas, Ehsan Gazi, Michael Brown, Noel Clarke, Peter Gardner

Articles

Fourier transform infrared spectra of a single cell in transflection geometry are seen to vary significantly with position on the cell, showing a distorted derivative-like lineshape in the region of the optically dense nucleus. A similar behaviour is observable in a model system of the protein albumin doped in a potassium bromide disk. It is demonstrated that the spectrum at any point is a weighted sum of the sample reflection and transmission and that the dominance of the reflection spectrum in optically dense regions can account for some of the spectral distortions previously attributed to dispersion artefacts. Rather than being …


Comparison Of Numerical And Post-Newtonian Waveforms For Generic Precessing Black-Hole Binaries, Manuela Campanelli, Carlos O. Lousto, Hiroyuki Nakano, Yosef Zlochower Apr 2009

Comparison Of Numerical And Post-Newtonian Waveforms For Generic Precessing Black-Hole Binaries, Manuela Campanelli, Carlos O. Lousto, Hiroyuki Nakano, Yosef Zlochower

Articles

We compare waveforms and orbital dynamics from the first long-term, fully non-linear, numerical simulations of a generic black-hole binary configuration with post-Newtonian predictions. The binary has mass ratio q 0.8 with arbitrarily oriented spins of magnitude S1/m2 1 0.6 and S2/m2 2 0.4 and orbits 9 times prior to merger. The numerical simulation starts with an initial separation of r 11M, with orbital parameters determined by initial 2.5PN and 3.5PN post-Newtonian evolutions of a quasi-circular binary with an initial separation of r = 50M. The resulting binaries have very little eccentricity according to the 2.5PN and 3.5PN systems, but show …


Identifying Critical Junctures In Macroeconomic Policy - The Cases Of Mexico And Sweden In The Early 1980s, Ana Haro Maza, John Hogan Apr 2009

Identifying Critical Junctures In Macroeconomic Policy - The Cases Of Mexico And Sweden In The Early 1980s, Ana Haro Maza, John Hogan

Articles

Abstract: This paper utilizes a new critical junctures framework to help understand the nature of the changes in macroeconomic policy. The framework consists of three elements which must be identified in sequence to be able to declare, with some certainty, if an event was a critical juncture. These are crisis, ideational change, and radical policy change. Utilizing the critical juncture framework, we will determine whether changes to Mexican and Swedish macroeconomic policy in the early 1980s constituted clean breaks with the past, or were continuations of previously established policy pathways, and why that was.


Foreseeability And Copyright Incentives, Shyam Balganesh Apr 2009

Foreseeability And Copyright Incentives, Shyam Balganesh

Articles

Copyright law's principal justification today is the economic theory of creator incentives. Central to this theory is the recognition that while copyright's exclusive rights framework provides creators with an economic incentive to create, it also entails large social costs, and that creators therefore need to be given just enough incentive to create in order to balance the system's benefits against its costs. Yet, none of copyright's current doctrines enable courts to circumscribe a creator's entitlement by reference to limitations inherent in the very idea of incentives. While the common law too relies on providing actors with incentives to behave in …


Identification Of An Rsh Gene From A Novosphingobium Sp. Necessary For Quorum-Sensing Signal Accumulation, Han Ming Gan, Larry Buckley, Ernő Szegedi, André O. Hudson, Michael A. Savka Apr 2009

Identification Of An Rsh Gene From A Novosphingobium Sp. Necessary For Quorum-Sensing Signal Accumulation, Han Ming Gan, Larry Buckley, Ernő Szegedi, André O. Hudson, Michael A. Savka

Articles

The stringent response is a mechanism by which bacteria adapt to environmental stresses and nutritional deficiencies through the synthesis and hydrolysis of (p)ppGpp by RelA/SpoT enzymes. Alphaproteobacteria and plants contain a single Rsh enzyme (named for RelA/SpoT homolog) that is bifunctional. Here we report the identification of a new species of bacteria belonging to the genus Novosphingobium and characterization of an rsh mutation in this plant tumor-associated isolate. Isolate Rr 2-17, from a grapevine crown gall tumor, is a member of the Novosphingobium genus that produces the N-acyl-homoserine lactone (AHL) quorum-sensing (QS) signals. A Tn5 mutant, Hx 699, deficient in …


Impact Of Plant Essential Oils On Microbiological, Organoleptic And Quality Markers Of Minimally Processed Vegetables, Jorge Gutierrez, Paula Bourke, Julien Lonchamp, Catherine Barry-Ryan Apr 2009

Impact Of Plant Essential Oils On Microbiological, Organoleptic And Quality Markers Of Minimally Processed Vegetables, Jorge Gutierrez, Paula Bourke, Julien Lonchamp, Catherine Barry-Ryan

Articles

The objectives of this study were to evaluate the efficacy of plant essential oils (EOs) for control of the natural spoilage microflora on ready-to-eat (RTE) lettuce and carrots whilst also considering their impact on organoleptic properties. Initial decontamination effects achieved using EOs were comparable to that observed with chlorine and solution containing oregano recorded a significantly lower initial TVC level than the water treatment on carrots (p < 0.05). No significant differences were found between the EO treatments and chlorine considering gas composition, color, texture and water activity of samples. The sensory panel found EO treatments acceptable for carrots throughout storage, while lettuce washed with the EO solutions were rejected for overall appreciation by Day 7. Correlating microbial and sensory changes with volatile emissions identified 12 volatile quality markers. Oregano might be a suitable decontamination alternative to chlorine for RTE carrots, while the identification of volatile quality markers is a useful complement to sensory and microbiological assessments in the monitoring of organoleptic property changes and shelf-life of fresh vegetables. Industrial relevance There is industrial demand for natural alternatives to chlorine, which is commonly used for decontamination of fresh produce but which has limitations with respect to antimicrobial efficacy and possible formation of carcinogenic compounds in water. Plant essential oils have proven antimicrobial and other bioactive properties, however their usefulness in foods can be mitigated by their high sensory impact. This study examined the application of EOs for fresh produce decontamination addressing control of spoilage microflora and improving shelf-life characteristics whilst also considering the impact on organoleptic properties. The effectiveness of oregano as a decontamination treatment was comparable with that of chlorine. Carrot discs treated with the EO regimes were acceptable in terms of sensory quality and appreciation, therefore oregano could offer a natural alternative for the washing and preservation of fresh produce. Combining EOs with other natural preservatives might minimize doses and reduce the impact on organoleptic properties of fresh vegetables.


The Paternalistic Ideology Of Erisa And Unforgiving Courts: Restoring Balance Through A Grand Bargain, Edward A. Zelinsky Apr 2009

The Paternalistic Ideology Of Erisa And Unforgiving Courts: Restoring Balance Through A Grand Bargain, Edward A. Zelinsky

Articles

No abstract provided.


From The Chair, Lela P. Love Apr 2009

From The Chair, Lela P. Love

Articles

No abstract provided.


Marriage Or Liberation? Reflections On Two Strategies In The Struggle For Lesbian And Gay Rights And Relationship Recognition, Edward D. Stein Apr 2009

Marriage Or Liberation? Reflections On Two Strategies In The Struggle For Lesbian And Gay Rights And Relationship Recognition, Edward D. Stein

Articles

A great deal has changed about the legal and social situation for lesbians, gay men, bisexuals, and transgender (LGBT) people since the 1989 publication of Tom Stoddard and Paula Ettelbrick's dueling essays about how the quest for same-sex marriage fit into the larger struggle for LGBT rights. In 1989, twenty-four states and the District of Columbia criminalized most forms of adult consensual sex between people of the same sex and the constitutionality of such sodomy laws had been recently upheld by the U.S. Supreme Court in Bowers v. Hardwick in an opinion that said arguments against the constitutionality of such …


Purposivism And Institutional Competence In Statutory Interpretation, Michael Herz Apr 2009

Purposivism And Institutional Competence In Statutory Interpretation, Michael Herz

Articles

No abstract provided.


Binary Black Hole Merger In Galactic Nuclei: Post-Newtonian Simulations, Ingo Bergentzen, Miguel Preto, Peter Berczik, David Merritt, Rainer Spurzem Mar 2009

Binary Black Hole Merger In Galactic Nuclei: Post-Newtonian Simulations, Ingo Bergentzen, Miguel Preto, Peter Berczik, David Merritt, Rainer Spurzem

Articles

This paper studies the formation and evolution of binary supermassive black holes (SMBHs) in rotating galactic nuclei, focusing on the role of stellar dynamics. We present the first N-body simulations that follow the evolution of the SMBHs from kiloparsec separations all the way to their final relativistic coalescence, and that can robustly be scaled to real galaxies. The N-body code includes post-Newtonian (PN) corrections to the binary equations of motion up to order 2.5; we show that the evolution of the massive binary is only correctly reproduced if the conservative 1PN and 2PN terms are included. The orbital eccentricities of …


Evolution Of Nuclear Star Clusters, David Merritt Mar 2009

Evolution Of Nuclear Star Clusters, David Merritt

Articles

Two-body relaxation times of nuclear star clusters are short enough that gravitational encounters should substantially affect their structure in 10 Gyr or less. In nuclear star clusters without massive black holes, dynamical evolution is a competition between core collapse, which causes densities to increase, and heat input from the surrounding galaxy, which causes densities to decrease. The maximum extent of a nucleus that can resist expansion is derived numerically for a wide range of initial conditions; observed nuclei are shown to be compact enough to resist expansion, although there may have been an earlier generation of low-density nuclei that were …


Modeling Gravitational Recoil From Precessing Highly-Spinning Unequal-Mass Black-Hole Binaries, Carlos O. Lousto, Yosef Zlochower Mar 2009

Modeling Gravitational Recoil From Precessing Highly-Spinning Unequal-Mass Black-Hole Binaries, Carlos O. Lousto, Yosef Zlochower

Articles

We measure the gravitational recoil for unequal-mass-black-hole-binary mergers, with the larger BH having spin a/mH = 0.8, and the smaller BH non-spinning. We choose our configurations such that, initially, the spins lie on the orbital plane. The spin and orbital plane precess significantly, and we find that the out-of plane recoil (i.e. the recoil perpendicular to the orbital plane around merger) varies as η2/(1+q), in agreement with our previous prediction, based on the post-Newtonian scaling.


What Should Southern Baptists Do With Calvinists?, Elmer L. Towns Mar 2009

What Should Southern Baptists Do With Calvinists?, Elmer L. Towns

Articles

No abstract provided.


Taking Creativity Beyond Art To Entrepreneurship, Ashok Rao Mar 2009

Taking Creativity Beyond Art To Entrepreneurship, Ashok Rao

Articles

No abstract provided.


The Nuclear Star Cluster Of The Milky Way: Proper Motions And Mass, Rainer Schödel, David Merritt, Andreas Eckart Mar 2009

The Nuclear Star Cluster Of The Milky Way: Proper Motions And Mass, Rainer Schödel, David Merritt, Andreas Eckart

Articles

Nuclear star clusters (NSCs) are located at the photometric and dynamical centers of the majority of galaxies. They are among the densest star clusters in the Universe. The NSC in the Milky Way is the only object of this class that can be resolved into individual stars. The massive black hole Sagittarius A* is located at the dynamical center of the Milky Way NSC.
Aims. In this work we examine the proper motions of stars out to distances of 1.0 pc from Sgr A*. The aim is to examine the velocity structure of the MW NSC and acquire a reliable …


Perturbations Of Spacetime Around A Stationary Rotating Cosmic String, Kouji Ogawa, Hideki Ishihara, Hiroshi Kozaki, Hiroyuki Nakano Mar 2009

Perturbations Of Spacetime Around A Stationary Rotating Cosmic String, Kouji Ogawa, Hideki Ishihara, Hiroshi Kozaki, Hiroyuki Nakano

Articles

We consider the metric perturbations around a stationary rotating Nambu-Goto string in Minkowski spacetime. By solving the linearized Einstein equations, we study the effects of azimuthal frame dragging around the rotation axis and linear frame dragging along the rotation axis, the Newtonian logarithmic potential, and the angular deficit around the string as the potential mode. We also investigate gravitational waves propagating off the string and propagating along the string, and show that the stationary rotating string emits gravitational waves toward the directions specified by discrete angles from the rotation axis. Waveforms, polarizations, amplitudes which depend on the direction are shown …


The 800-Pound Gorilla In The Room, Or, How To Explain To A Non-Librarian What A Cataloger Is., Elizabeth J. Cox Mar 2009

The 800-Pound Gorilla In The Room, Or, How To Explain To A Non-Librarian What A Cataloger Is., Elizabeth J. Cox

Articles

Librarians often find it difficult to explain what we do. Catalogers often find it difficult to explain to other librarians what we do. This article offers some suggestions.


Adjusting Alienability, Lee Anne Fennell Mar 2009

Adjusting Alienability, Lee Anne Fennell

Articles

In recent years, the right to exclude has dominated property theory, relegating alienability - another of the standard incidents of ownership - to the scholarly shadows. Law and economics has also long neglected inalienability, despite its inclusion in Calabresi and Melamed's Cathedral. In this Article, I explore inalienability rules as tools for achieving efficiency or other ends when applied to resources that society generally views as appropriate objects of market transactions. Specifically, I focus on inalienability's capacity to alter upstream decisions by would-be resellers about whether to acquire an entitlement in the first place. By influencing these acquisition decisions, inalienability …


Jurisdictions And Causes Of Action In Bullying, Stress And Harassment Cases Part 1, Niall Neligan Mar 2009

Jurisdictions And Causes Of Action In Bullying, Stress And Harassment Cases Part 1, Niall Neligan

Articles

This is the first of a two part article in which the author will critically evaluate the different causes of action and myriad of jurisdictions for bringing a claim in the inter-related fields of bullying, stress and harassment in the workplace from a commercial law perspective. The author will define and trace the separate headings under which the law governing bullying, stress and harassment has evolved. In the second part of the article (which will
appear in the next edition of the journal), the author will examine recent developments in tortious claims for psychiatric injuries arising from bullying, stress and …


Are We On The Right Track? Issues With Lp Record Collections In U.S. Academic Libraries, Andrea Imre, Elizabeth J. Cox Mar 2009

Are We On The Right Track? Issues With Lp Record Collections In U.S. Academic Libraries, Andrea Imre, Elizabeth J. Cox

Articles

This article reports on the findings of a survey on collection development and circulation practices of LP records in U.S. academic libraries conducted in September of 2007. Areas of special interest included the size of LP collections, identification of barriers to access, collection development practices, and digitization activities. The survey found that libraries have large LP collections, many libraries have large uncataloged collections, limited resources to manage these sound collections, and are faced with storage problems.


Impacts Of The National Hazardous Waste Management Plan, Victor Hrymak Mar 2009

Impacts Of The National Hazardous Waste Management Plan, Victor Hrymak

Articles

The impacts of the national hazardous waste managemnent plan are discussed for various sectors in Ireland. These sectors include pharmaceutical, printing, transport, agriculture, health care, education and local authority sectors.


Extrinsic Control Parameters For Ozone Inactivation Of Escherichia Coli Using A Bubble Column, Sonal Patil, Patrick J. Cullen, Bridget Cullen, Jesus Maria Frias, Paula Bourke Mar 2009

Extrinsic Control Parameters For Ozone Inactivation Of Escherichia Coli Using A Bubble Column, Sonal Patil, Patrick J. Cullen, Bridget Cullen, Jesus Maria Frias, Paula Bourke

Articles

Aims: To investigate the effect of extrinsic control parameters for ozone inactivation of E. coli in a bubble column. Methods and Results: Ozone inactivation of Escherichia coli ATCC 25922 in Tryptic Soya Broth was examined. The parameters studied included temperature (ambient, 20, 25 and 30°C), exposure time (up to 30 min), gas flow rate (0·03, 0·06, 0·12, 0·25, 0·5 and 0·75 l min−1) and concentration level (five different levels). The efficacy of ozone treatment was a function of the parameters investigated and optimum control parameters of flow rate (0·12 l min−1), temperature (ambient) and ozone concentration (75 μg ml−1) resulted …


Breaking The Mould 1 : A Study Of Condensation In Single-Leaf Concrete Wall Upgrades, Joseph Little Mar 2009

Breaking The Mould 1 : A Study Of Condensation In Single-Leaf Concrete Wall Upgrades, Joseph Little

Articles

This article is the first of a series looking at upgrade options and issues associated with single-leaf walls of existing houses. This article will focus on insulated drylined concrete block walls of the ubiquitous housing estate house. This will include the findings of software that dynamically models moisture movement through the wall over several years. The article following this will look at a range of options for replacing existing drylining or installing drylining where it never was before, be that for a solid block wall of a 1950s house or a solid brick wall of an 1850s house.