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Technology As A Driver Within Agencies - The Internet Change Everything, Michael Herz Jul 2012

Technology As A Driver Within Agencies - The Internet Change Everything, Michael Herz

Articles

No abstract provided.


The Embedded Epistemologist: Dispatches From The Legal Front, Susan Haack Jun 2012

The Embedded Epistemologist: Dispatches From The Legal Front, Susan Haack

Articles

In ordinary circumstances, we can assess the worth of evidence well enough without benefit of any theory; but when evidence is especially complex, ambiguous, or emotionally disturbing-as it often is in legal contexts-epistemological theory may be helpful. A legal fact-finder is asked to determine whether the proposition that the defendant is guilty, or is liable, is established to the required degree of proof by the [admissible] evidence presented; i.e., to make an epistemological appraisal. The foundherentist theory developed in Evidence and Inquiry can help us understand what this means; and reveals that degrees of proof cannot be construed as mathematical …


An Investigation In Culinary Life And Professional Identity In Practice During Internship, Frank Cullen May 2012

An Investigation In Culinary Life And Professional Identity In Practice During Internship, Frank Cullen

Articles

The primary objective of this research was to investigate the selection process used by consumers when choosing a restaurant to dine. This study examined literature on consumer behavior, restaurant selection, and decision-making, underpinning the contention that service quality is linked to the consumer’s selection of a restaurant. It supports the utility theories that consumers buy bundles of attributes that simultaneously combined represent a certain level of service quality at a certain price. The findings of the research displayed a preference by Dublin consumers for Italian and Chinese styled restaurants and identified quality of the food, type of food, cleanliness of …


Changes To The International Regulatory Environment, Martin Mchugh, Fergal Mccaffery, Valentine Casey Apr 2012

Changes To The International Regulatory Environment, Martin Mchugh, Fergal Mccaffery, Valentine Casey

Articles

Since 2010, two significant international regulations regarding medical device development have come into force, the amendment to the European Union (EU) Medical Device Directive (MDD) 2007/47/EC and the United States (US) Food and Drug Administration (FDA) Final rule on Medical Device Data Systems (MDDS). Adherence to these regulations is mandatory to be able to market a medical device in the respective region. The ability to understand these regulations and apply them to a development project can be difficult. The MDDS final rule changes the safety classification of a number of devices from Class III-high risk to Class I-low risk. The …


Hadamard Renormalization Of The Stress Energy Tensor In A Spherically Symmetric Black Hole Space-Time With An Application To Lukewarm Black Holes, Cormac Breen, Adrian Ottewill Apr 2012

Hadamard Renormalization Of The Stress Energy Tensor In A Spherically Symmetric Black Hole Space-Time With An Application To Lukewarm Black Holes, Cormac Breen, Adrian Ottewill

Articles

We consider a quantum field which is in a Hartle-Hawking state propagating in a spherically symmetric black hole space-time. We calculate the components of the stress tensor, renormalized using the Hadamard form of the Green's function, in the exterior region of this space-time. We then specialize these results to the case of the `lukewarm' Riessner-Nordstrom-de Sitter black hole.


Designing And Implementing A Platform For Collecting Multi-Modal Data Of Human-Robot Interaction, Brian Vaughan, Jing Guang Han, Emer Kilmartin, Nick Campbell Apr 2012

Designing And Implementing A Platform For Collecting Multi-Modal Data Of Human-Robot Interaction, Brian Vaughan, Jing Guang Han, Emer Kilmartin, Nick Campbell

Articles

This paper details a method of collecting video and audio recordings of people inter- acting with a simple robot interlocutor. The interaction is recorded via a number of cameras and microphones mounted on and around the robot. The system utilised a number of technologies to engage with interlocutors including OpenCV, Python, and Max MSP. Interactions over a three month period were collected at The Science Gallery in Trinity College Dublin. Visitors to the gallery freely engaged with the robot, with interactions on their behalf being spontaneous and non-scripted. The robot dialogue was a set pattern of utterances to engage interlocutors …


Stiefel And Grassmann Manifolds In Quantum Chemistry, Eduardo Chiumiento, Michael Melgaard Apr 2012

Stiefel And Grassmann Manifolds In Quantum Chemistry, Eduardo Chiumiento, Michael Melgaard

Articles

We establish geometric properties of Stiefel and Grassmann manifolds which arise in relation to Slatertype variational spaces in many-particle Hartree-Fock theory and beyond. In particular, we prove thatthey are analytic homogeneous spaces and submanifolds of the space of bounded operators on the single-particle Hilbert space. As a by-product we obtain that they are complete Finsler manifolds. These geometric properties underpin state-of-the-art results on existence of solutions to Hartree-Fock type equations.


The Implementation Of A Visco-Hyperelastic Numerical Material Model For Simulating The Behaviour Of Polymer Foam Materials, Conor Briody, Barry Duignan, Stephen Jerrams, John Tiernan Apr 2012

The Implementation Of A Visco-Hyperelastic Numerical Material Model For Simulating The Behaviour Of Polymer Foam Materials, Conor Briody, Barry Duignan, Stephen Jerrams, John Tiernan

Articles

Polyurethane foam has been in use for some time in wheelchair seating systems as it offers good pressure relieving capabilities in most cases. However, little characterisation work has gone into seating foam materials by comparison with conventional elastomeric materials. Accurate material models could allow better prediction of foam in-service behaviour, which could potentially improve seating design practises. The objective of this work was to develop an approach for the validation of hyperelastic and viscoelastic material model parameters used to simulate polyurethane foam behaviour. Material parameters were identified from relevant test procedures and implemented in a Finite Element simulation of an …


Large-Scale Experimental Studies Show Unexpected Amino Acid Effects On Protein Expression And Solubility In Vivo In E. Coli, W. Nicholson Price Ii, Samuel K. Handelman, John K. Everett, Saichiu N. Tong, Ana Bracic, Jon D. Luff, Victor Naumov, Thomas Acton, Philip Manor, Rong Xiao, Burkhard Rost, Gaetano T. Montelione, John F. Hunt Apr 2012

Large-Scale Experimental Studies Show Unexpected Amino Acid Effects On Protein Expression And Solubility In Vivo In E. Coli, W. Nicholson Price Ii, Samuel K. Handelman, John K. Everett, Saichiu N. Tong, Ana Bracic, Jon D. Luff, Victor Naumov, Thomas Acton, Philip Manor, Rong Xiao, Burkhard Rost, Gaetano T. Montelione, John F. Hunt

Articles

The biochemical and physical factors controlling protein expression level and solubility in vivo remain incompletely characterized. To gain insight into the primary sequence features influencing these outcomes, we performed statistical analyses of results from the high-throughput protein-production pipeline of the Northeast Structural Genomics Consortium. Proteins expressed in E. coli and consistently purified were scored independently for expression and solubility levels. These parameters nonetheless show a very strong positive correlation. We used logistic regressions to determine whether they are systematically influenced by fractional amino acid composition or several bulk sequence parameters including hydrophobicity, sidechain entropy, electrostatic charge, and predicted backbone disorder. …


Kinetic Studies Of The Photo-Degradation Of Poly Arylene Vinylenes, Luke O'Neill, Patrick Lynch, Niamh Mcgoldrick, Hugh Byrne, Mary Mcnamara Apr 2012

Kinetic Studies Of The Photo-Degradation Of Poly Arylene Vinylenes, Luke O'Neill, Patrick Lynch, Niamh Mcgoldrick, Hugh Byrne, Mary Mcnamara

Articles

The kinetics of the degradation of a homologous series of Poly phenylene vinylenes in which the phenylene units of the PPV structure are systematically substituted by naphthyl and anthyrl units is presented. Degradation is monitored according to the decay of the long wavelength absorption maximum upon illumination with UV radiation. Compared to Toluene solution, the photo-degradation is seen to be accelerated in Chloroform solution. All decays are fitted with first order kinetics. It is found that all substitutions improve the stability of the vinylene polymers against decay. In particular the highly electro-negative naphthyl group serves to drastically increase the stability …


Impaired Clearance And Enhanced Pulmonary Inflammatory/Fibrotic Response To Carbon Nanotubes In Myeloperoxidase-Deficient Mice, Aidan Meade, Anna Shvedova, Alexandr Kapralov, Wei Hong Feng, Elena Kisin, Ashley Murray, Robert Mercer, Claudette St. Croix, Megan Lang, Simon Watkins, Nagarjun Konduru, Brett Allen, Jennifer Conroy, Gregg Kotchey, Bashir Mohamed, Yuri Volkov, Alexander Star, Bengt Fadeel, Valerian Kagan Mar 2012

Impaired Clearance And Enhanced Pulmonary Inflammatory/Fibrotic Response To Carbon Nanotubes In Myeloperoxidase-Deficient Mice, Aidan Meade, Anna Shvedova, Alexandr Kapralov, Wei Hong Feng, Elena Kisin, Ashley Murray, Robert Mercer, Claudette St. Croix, Megan Lang, Simon Watkins, Nagarjun Konduru, Brett Allen, Jennifer Conroy, Gregg Kotchey, Bashir Mohamed, Yuri Volkov, Alexander Star, Bengt Fadeel, Valerian Kagan

Articles

Advancement of biomedical applications of carbonaceous nanomaterials is hampered by their biopersistence and proinflammatory action in vivo. Here, we used myeloperoxidase knockout B6.129X1-MPO (MPO k/o) mice and showed that oxidation and clearance of single walled carbon nanotubes (SWCNT) from the lungs of these animals after pharyngeal aspiration was markedly less effective whereas the inflammatory response was more robust than in wild-type C57Bl/6 mice. Our results provide direct evidence for the participation of MPO – one of the key-orchestrators of inflammatory response – in the in vivo pulmonary oxidative biodegradation of SWCNT and suggest new ways to control the biopersistence of …


Multiple Solutions Of The Quasi Relativistic Choquard Equation, Michael Melgaard, Frederic D. Y. Zongo Mar 2012

Multiple Solutions Of The Quasi Relativistic Choquard Equation, Michael Melgaard, Frederic D. Y. Zongo

Articles

We prove existence of multiple solutions to the quasi relativistic Choquard equations with a scalar potential.


Hadamard Renormalisation Of The Stress Energy Tensor On The Horizons Of A Spherically Symmetric Black Hole Space-Time, Cormac Breen, Adrian Ottewill Mar 2012

Hadamard Renormalisation Of The Stress Energy Tensor On The Horizons Of A Spherically Symmetric Black Hole Space-Time, Cormac Breen, Adrian Ottewill

Articles

We consider a quantum field which is in a Hartle-Hawking state propagating in a general spherically symmetric black hole space-time. We make use of uniform approximations to the radial equation to calculate the components of the stress tensor, renormalized using the Hadamard form of the Green's function, on the horizons of this space-time. We then specialize these results to the case of the `lukewarm' Reissner-Nordstrom-de Sitter black hole and derive some conditions on the stress tensor for the regularity of the Hartle-Hawking state


What Is The Pensee Sauvage And Is It Still Alive In Modern Society?, Mark William Farrell Mar 2012

What Is The Pensee Sauvage And Is It Still Alive In Modern Society?, Mark William Farrell

Articles

The culinary process has changed somewhat down through the ages but not to any great extent. The raw materials are still similar but innovation and creativity has been applied to them to give the finished product varying degrees of taste, texture, sensory and aesthetic pleasure. Fundamentally the tools which we use to interpret or rate our food are the very same apparatus which animals use to define theirs. The anthropology of sensory perception is essentially the same for animals and man in an evolutionary perspective (Pasquet, Simmen & Pagezy, 2000). It reflects the capacity of the animal or primitive human …


Disciplinary Identity Of Nanoscience And Nanotechnology Research- A Study Of Postgraduate Researchers’ Experiences, Deepa Nathamuni Chari, Robert Howard, Brian Bowe Mar 2012

Disciplinary Identity Of Nanoscience And Nanotechnology Research- A Study Of Postgraduate Researchers’ Experiences, Deepa Nathamuni Chari, Robert Howard, Brian Bowe

Articles

Nanoscience and Nanotechnology research although growing at very fast rate, its disciplinary identity remains ‘ill-defined’. It is often viewed as multidisciplinary; and/or interdisciplinary science or even as a unique discipline on its own way. As a consequence, whether this growing research area requires researchers that have studied specialised undergraduate or postgraduate nanoscience and nanotechnology programmes; or traditional science and engineering disciplines is still less understood. The examination of postgraduate researchers’ experiences of nanoscience and nanotechnology research can provide a way of understanding nanoscience and nanotechnology research and the associated forms of disciplinarity, which in turn can address what the type …


Physicochemical And Microbiological Quality Of Harvested Rainwater From An Agricultural Installation In Ireland, Sean O'Hogain, Liam Mccarton, Niamh Mcintyre, Jenny Pender, Anna Reid Mar 2012

Physicochemical And Microbiological Quality Of Harvested Rainwater From An Agricultural Installation In Ireland, Sean O'Hogain, Liam Mccarton, Niamh Mcintyre, Jenny Pender, Anna Reid

Articles

Members of DTC Research Group. Dublin Institute of Technology was commissioned in 2005 by the Department of Environment, Heritage and Local Government in Ireland to assess the feasibility of utilising rainwater to replace treated mains water for nonpotable uses. The project involved the design, installation, commissioning and monitoring of rainwater harvesting on a farm. Two monitoring programmes, Regime 1 and Regime 2, examined the physicochemical and microbiological quality of the harvested rainwater. Samples were taken monthly and tested. Regime 1 analysis showed that the microbiological quality of the rainwater from the site did not comply with the requirements of the …


On Soliton Interactions For A Hierarchy Of Generalized Heisenberg Ferromagnetic Models On Su(3)/S(U(1) $\Times$ U(2)) Symmetric Space, Vladimir Gerdjikov, Georgi Grahovski, Alexander Mikhailov, Tihomir Valchev Mar 2012

On Soliton Interactions For A Hierarchy Of Generalized Heisenberg Ferromagnetic Models On Su(3)/S(U(1) $\Times$ U(2)) Symmetric Space, Vladimir Gerdjikov, Georgi Grahovski, Alexander Mikhailov, Tihomir Valchev

Articles

We consider an integrable hierarchy of nonlinear evolution equations (NLEE) related to linear bundle Lax operator L. The Lax representation is Z2 \times Z2 reduced and is naturally associated with the symmetric space SU(3)/S(U(1) \times U(2)). The simplest nontrivial equation in the hierarchy is a generalization of Heisenberg ferromagnetic model. We construct the N-soliton solutions for an arbitrary member of the hierarchy by using the Zakharov-Shabat dressing method with an appropriately chosen dressing factor. Two types of soliton solutions: quadruplet and doublet solitons are found. The one-soliton solutions of NLEEs with even and odd dispersion laws have different properties. In …


Optical Properties Of High Refractive Index Thin Films Processed At Low-Temperature, Mohamed Oubaha, Salem Elmaghrum, Robert Copperwhite, Brian Corcoran, Colette Mcdonagh, Arnaud Gorin Feb 2012

Optical Properties Of High Refractive Index Thin Films Processed At Low-Temperature, Mohamed Oubaha, Salem Elmaghrum, Robert Copperwhite, Brian Corcoran, Colette Mcdonagh, Arnaud Gorin

Articles

This study reports on the first development of high refractive index thin film materials processed at temperatures not greater than 100 degrees celsius. Three materials were synthesised by the sol–gel technique, each employing different transition metal precursors (niobium, tantalum and vanadium alkoxides). The optical properties of these materials were characterised by ellipsometry and the propagation losses at 638 nm were measured by the prism coupling method. It is shown that refractive indices as high as 1.870, 2.039 and 2.308 are obtained from niobium-, tantalum- and vanadium-based materials respectively, attributed to the influence of the transition metal atomic size on the …


On Creativity, Kerry Meakin Feb 2012

On Creativity, Kerry Meakin

Articles

A review of available literature on creativity was undertaken to determine the definition of creativity, the common traits displayed by those perceived as being creative and how those traits may possibly be nurtured. The word ‘creativity’ has been used by politicians as if it is tangible commodity that must be developed in time of economic recession. Indeed, Dublin City Enterprise Board, a local government authority are in the process of staging ‘Idea Generation’ workshops, “this workshop not only shows you what ideas are good ideas but also introduces you to the concepts of thinking laterally” (Dublin Regional Authority, 2011). The …


Preparation And Rapid Analysis Of Antibacterial Silver, Copper And Zinc Doped Sol–Gel Surfaces, Brendan Duffy, Swarna Jaiswal, Patrick Mchale Feb 2012

Preparation And Rapid Analysis Of Antibacterial Silver, Copper And Zinc Doped Sol–Gel Surfaces, Brendan Duffy, Swarna Jaiswal, Patrick Mchale

Articles

The colonisation of clinical and industrial surfaces with microorganisms, including antibiotic-resistant strains, has promoted increased research into the development of effective antibacterial and antifouling coatings. This study describes the preparation of metal nitrate (Ag, Cu, Zn) doped methyltriethoxysilane (MTEOS) coatings and the rapid assessment of their antibacterial activity using polyproylene microtitre plates. Microtitre plate wells were coated with different volumes of liquid sol–gel and cured under various conditions. Curing parameters were analysed by thermogravimetric analysis (TGA) and visual examination. The optimum curing conditions were determined to be 50–70C using a volume of 200ul. The coated wells were challenged with Gram-positive …


Characterising Domestic Electricity Consumption Patterns By Dwelling And Occupant Socio-Economic Variables: An Irish Case Study, Fintan Mcloughlin, Aidan Duffy, Michael Conlon Feb 2012

Characterising Domestic Electricity Consumption Patterns By Dwelling And Occupant Socio-Economic Variables: An Irish Case Study, Fintan Mcloughlin, Aidan Duffy, Michael Conlon

Articles

This paper examines the influence of dwelling and occupant characteristics on domestic electricity consumption patterns by analysing data obtained from a smart metering survey of a representative cross section of approximately 4,200 domestic Irish dwellings. A multiple linear regression model was applied to four parameters: total electricity consumption, maximum demand, load factor and time of use (ToU) of maximum electricity demand for a number of different dwelling and occupant socio-economic variables. In particular, dwelling type, number of bedrooms, head of household (HoH) age, household composition, social class, water heating and cooking type all had a significant influence over total domestic …


A Review Of Situation Identification Techniques In Pervasive Computing, Juan Ye, Simon Dobson, Susan Mckeever Feb 2012

A Review Of Situation Identification Techniques In Pervasive Computing, Juan Ye, Simon Dobson, Susan Mckeever

Articles

Pervasive systems must offer an open, extensible, and evolving portfolio of services which integrate sensor data from a diverse range of sources. The core challenge is to provide appropriate and consistent adaptive behaviours for these services in the face of huge volumes of sensor data exhibiting varying degrees of precision, accuracy and dynamism. Situation identification is an enabling technology that resolves noisy sensor data and abstracts it into higher-level concepts that are interesting to applications. We provide a comprehensive analysis of the nature and characteristics of situations, discuss the complexities of situation identification, and review the techniques that are most …


Review Of Ultrasound Elastography Quality Control And Training Test Phantoms, S. Cournane, Andrew Fagan, Jacinta Browne Feb 2012

Review Of Ultrasound Elastography Quality Control And Training Test Phantoms, S. Cournane, Andrew Fagan, Jacinta Browne

Articles

While the rapid development of ultrasound elastography techniques in recent decades has sparked its prompt implementation in the clinical setting adding new diagnostic information to conventional imaging techniques, questions still remain as to its full potential and efficacy in the hospital environment. A limited number of technical studies have objectively assessed the full capabilities of the different elastography approaches, perhaps due, in part, to the scarcity of suitable tissue-mimicking materials and appropriately designed phantoms available. Few commercially-available elastography phantoms possess the necessary test target characteristics or mechanical properties observed clinically, or indeed reflect the lesion-to-background elasticity ratio encountered during clinical …


Assessment Of An Osteoblast-Like Cell Line As A Model For Human Primary Osteoblasts Using Raman Spectroscopy, Lindsay Mcmanus, Franck Bonnier, George Burke, Brian Meenan, Adrian Boyd, Hugh Byrne Feb 2012

Assessment Of An Osteoblast-Like Cell Line As A Model For Human Primary Osteoblasts Using Raman Spectroscopy, Lindsay Mcmanus, Franck Bonnier, George Burke, Brian Meenan, Adrian Boyd, Hugh Byrne

Articles

Raman spectroscopy is employed to determine the suitability of the U20S osteoblast-like cell line for use as a model for human primary osteoblasts, with emphasis on the ability of these cell types to replicate their tissue of origin. It was found that both cell types demonstrated early stage mineral deposition that followed significantly different growth patterns. Analysis of the growth pattern and spectral data from primary cells revealed increasing bone quality ratios and a high crystallinity, consistent with previous reports. Conversely the investigation of the U20S osteoblast-like cell line provided evidence of dense multilayered mineralised regions that corresponded more closely …


Existence Of A Minimizer For The Quasi-Relativistic Kohn-Sham Model, Carlos Argáez García, Michael Melgaard Jan 2012

Existence Of A Minimizer For The Quasi-Relativistic Kohn-Sham Model, Carlos Argáez García, Michael Melgaard

Articles

We study the standard and extended Kohn-Sham models for quasi-relativistic N-electron Coulomb systems; that is, systems where the kinetic energy of the electrons is given by the quasi-relativistic operator (see article) . For spin-unpolarized systems in the local density approximation, we prove existence of a ground state (or minimizer) provided that the total charge Z of K nuclei is greater than N-1 and that Z is smaller than a critical charge (see article).


Effects Of Drip Irrigation Circuit Design And Lateral Line Lengths: I—On Pressure And Friction Loss, Mohamed Yousif Tayel, David A. Lightfoot, Hani A.-G. Mansour Jan 2012

Effects Of Drip Irrigation Circuit Design And Lateral Line Lengths: I—On Pressure And Friction Loss, Mohamed Yousif Tayel, David A. Lightfoot, Hani A.-G. Mansour

Articles

Laboratory tests were conducted at the Irrigation Devices and Equipment’s Test Laboratory, Agricultural Engineering Research Institute, Agriculture Research Center, Giza, Egypt. The experimental design of laboratory experiments was split in randomized complete block design with three replicates. Laboratory tests carried out on three irrigation lateral lines of 40, 60, 80 m under the following three drip irrigation circuit (DIC) designs; 1) one manifold for lateral lines or closed circuits with one manifold of drip irrigation system (CM1DIS); 2) closed circuits with two manifolds for lateral lines (CM2DIS), and 3) traditional drip irrigation system (TDIS) as a …


Photonic Crystal Fiber Interferometer For Dew Detection, Jinesh Mathew, Yuliya Semenova, Gerald Farrell Jan 2012

Photonic Crystal Fiber Interferometer For Dew Detection, Jinesh Mathew, Yuliya Semenova, Gerald Farrell

Articles

A novel method for dew detection based on photonic crystal fiber (PCF) interferometer that operates in reflection mode is presented in this paper. The fabrication of the sensor head is simple since it only involves cleaving and fusion splicing. The sensor shows good sensitivity to dew formation with a large wavelength peak shift of the interference pattern at the onset of dew formation. The device’s response to ambient humidity and temperature are also studied and reported in this paper. From our experiment it is also concluded that by attaching a thermoelectric cooler with temperature feedback, the sensor head demonstrated can …


Technology Platform For Sampling Water With Electrolyte-Gated Organic Transistors Sensitised With Langmuiur-Deposited Calixarene Surface Layers., Delia Puzzovio, Abdullah Al Naim, Lee Hague, Mary Deasy, James P. Ward, Tim Richardson, Martin Grell Jan 2012

Technology Platform For Sampling Water With Electrolyte-Gated Organic Transistors Sensitised With Langmuiur-Deposited Calixarene Surface Layers., Delia Puzzovio, Abdullah Al Naim, Lee Hague, Mary Deasy, James P. Ward, Tim Richardson, Martin Grell

Articles

We demonstrate a technology platform that enables the development of new, surface-sensitised organic transistor sensors. We show that an organic semiconductor can still be gated by an electric double layer within the electrochemical window of water after the deposition of up to four Langmuir- Schäfer calixarene layers onto its surface. Since many calixarenes are known to selectively bind waterborne cations, this facilitates sensitising a conventional organic semiconductor with a physically deposited layer for specific cation recognition. When at least two Langmuir-Schäfer layers are deposited, these also block the electrochemical doping of the organic semiconductor, which otherwise competes with the field …


Second Gradient Viscoelastic Fluids: Dissipation Principle And Free Energies, G. Amendola, M. Fabrizio, John Murrough Golden Jan 2012

Second Gradient Viscoelastic Fluids: Dissipation Principle And Free Energies, G. Amendola, M. Fabrizio, John Murrough Golden

Articles

We consider a generalization of the constitutive equation for an incompressible second order fluid, by including thermal and viscoelastic effects in the expression for the stress tensor. The presence of the histories of the strain rate tensor and its gradient yields a non-simple material, for which the laws of thermodynamics assume a modified form. These laws are expressed in terms of the internal mechanical power which is evaluated, using the dynamical equation for the fluid. Generalized thermodynamic constraints on the constitutive equation are presented. The required properties of free energy functionals are discussed. In particular, it is shown that they …


On Super And Hereditarily Hopfian And Co-Hopfian Abelian Groups, Brendan Goldsmith, Katao Kong Jan 2012

On Super And Hereditarily Hopfian And Co-Hopfian Abelian Groups, Brendan Goldsmith, Katao Kong

Articles

The notions of Hopfian and co-Hopfian groups have been of interest for some time. In this present work we characterize the more restricted classes of hereditarily Hopfian (co-Hopfian) and super Hopfian (co-Hopfian) groups in the case where the groups are Abelian.