820 research outputs found
Machine learning of quantum mechanical lattice energies for molecular crystal structure prediction
No full textIt is essential to study the crystal phases, i.e. polymorphs, of an organic molecule, under different conditions for the discovery and safety of new functional materials, and the effectiveness and toxicity of pharmaceuticals. This can be avoided by understanding the differences and likely transitions between polymorphs. Crystal Structure Prediction (CSP) is the process of generating crystal structures of a molecule(s). One way of doing this is to apply symmetry operations to a unit cell containing a molecule(s) representing the periodic structure, and optimising the geometries to local energy minima on the potential energy surface (PES) for the lattice. A local optimisation algorithm can be more useful than finding the global minimum of the energy landscape since several low-lying energy polymorphs can be observed.Due to the number of atoms involved in organic molecular crystals, classical force fields (FFs) are typically used for calculating the lattice energy, and only the most likely, low energy candidates, are re-optimised using a higher level of the hierarchy of electronic structure methods.The final re-optimisation step using a suitable electronic structure method is crucial since the lattice energy of polymorphs can differ by sub kJ/mol (Nyman et al. (2016); Nyman and Day (2015)) so method errors can significantly change the ranking of the lowest energy polymorphs, particularly if free energies are calculated. This becomes even more problematic due to the thousands of polymorphs in the low energy window of the energy landscape, for example 20 kJ/mol or below.The aim is to reduce the enormous computational cost of this using Machine Learning (ML). This work will begin by reviewing current CSP methods and ML techniques. A set of thiophenes will become the focus to demonstrate the usefulness of CSP in the discovery of organic semiconductor materials. ML techniques will be applied to the PES to investigate an inexpensive geometry optimisation, where poorly predicted structures may be limiting the accuracy of the energy ranking of the CSP landscape
Charles Bukowski, outsider literature, and the Beat movement /
No full textThis book uses cultural and psycho-social analysis to examine the beat writer Charles Bukowski and his literature, focusing on representations of the anti-hero rebel and outsider. Clements considers the complexities, ambiguities, and contradictions represented by the author and his work, exploring Bukowskis visceral writing of the cultural ordinary and everyday self-narrative. The study considers Bukowskis apolitical, gendered, and working-class stance to understand how the writer represents reality and is represented with regards to counter-cultural literature. In addition, Clements provides a broader socio-cultural focus that evaluates counterculture in relation to the American beat movement and mythology, highlighting the male cool anti-hero. The cultural practices and discourses utilized to situate Bukowski include the individual and society, outsiderdom, cult celebrity, fan embodiment, and disneyfication, providing a greater understanding of the beat generation and counterculture literature.First published 2013.This book uses cultural and psycho-social analysis to examine the beat writer Charles Bukowski and his literature, focusing on representations of the anti-hero rebel and outsider. Clements considers the complexities, ambiguities, and contradictions represented by the author and his work, exploring Bukowskis visceral writing of the cultural ordinary and everyday self-narrative. The study considers Bukowskis apolitical, gendered, and working-class stance to understand how the writer represents reality and is represented with regards to counter-cultural literature. In addition, Clements provides a broader socio-cultural focus that evaluates counterculture in relation to the American beat movement and mythology, highlighting the male cool anti-hero. The cultural practices and discourses utilized to situate Bukowski include the individual and society, outsiderdom, cult celebrity, fan embodiment, and disneyfication, providing a greater understanding of the beat generation and counterculture literature
Charles Bukowski, Outsider Literature and the Beat Movement
No full textThis book uses cultural and psycho-social analysis to examine the beat writer Charles Bukowski and his literature, focusing on representations of the anti-hero rebel and outsider. Clements considers the complexities, ambiguities, and contradictions represented by the author and his work, exploring Bukowski’s visceral writing of the cultural ordinary and everyday self-narrative. The study considers Bukowski’s apolitical, gendered, and working-class stance to understand how the writer represents reality and is represented with regards to counter-cultural literature. In addition, Clements provides a broader socio-cultural focus that evaluates counterculture in relation to the American beat movement and mythology, highlighting the male cool anti-hero. The cultural practices and discourses utilized to situate Bukowski include the individual and society, outsiderdom, cult celebrity, fan embodiment, and disneyfication, providing a greater understanding of the beat generation and counterculture literature
Dash thy foot
No full textAuthor Clements effectively utilizes his university teaching experience in economics to explore the deteriorating nature of U.S. student performance...and poses the unconventional view that while economic theorizes are based on observation, their evolvement may be guided by the theorist's political leanings. He also uses economic theory to show that it is inappropriate to use the expedient of just one fiscal criteria to explain economic occurrances. Dr. Martin Perline, Professor of Economics and Bloomfield Faculty Fellow, Wichita State University
RAMP based techno-economic model for Nepali MHPs, v2
No full textUpdated in summer 2022 since v1: RAMP (version 0.2.1-pre) adapted python files and additional python files comprising techno-economic model described in the paper: Clements, W.; Pandit, S.; Bajracharya, P.; Butchers, J.; Williamson, S.; Gautam, B.; Harper, P. Techno-Economic Modelling of Micro-Hydropower Mini-Grids in Nepal to Improve Financial Sustainability and Enable Electric Cooking. Energies 2021, 14, 4232. https://doi.org/10.3390/en14144232 The latest version of RAMP with explanation of requirements and how to start is freely accessible as “Remote-Areas Multi-energy systems load Profiles” (RAMP) from the GitHub. repository: https://github.com/SESAM-Polimi/RAMP. The model has been updated since the publication of the aforementioned paper, and the thesis supporting the latest version of the model should be published soon, with the title 'Enabling the transition to electric cooking in rural Nepali micro hydropower mini-grids', author: Will Clements This dataset supersedes the earlier version available at DOI: 10.5523/bris.lpsryevp8vxk2royoexrh2hv
Big Top, Birrarung Marr (Melbourne, Australia) [Performance Video Recording]
No full textDigital migration of VHS. Video type: performance. Date: 18 July 2004. Circus Oz company notes: Something wrong with sound; checked by Gina; sound issue is fixed (Lukman, 9/12/2013). Circus Oz archive notes: Melbourne last show.Circus Oz video recording 2004 - Melbourne, Australia, Big Top, Birrarung Marr.0:02:10-0:03:45 FIre Opening (Matt Wilson, Mel Fyfe, Sosina Wogayehu, Suzanne Simpson, Michael Ling, Scott Hone, Captain Frodo, Anni Davey, Tim Coldwell, Antonella Casella, Zanette Clements) --- 0:03:45-0:08:58 Roofwalk (Tim Coldwell) --- 0:08:58-0:13:48 Pole (Zanette Clements, Matt Wilson, Mel Fyfe, Sosina Wogayehu, Michael Ling, Scott Hone, Anni Davey, Tim Coldwell, Antonella Casella) --- 0:13:48-0:15:10 Drumming (Jim Dunlop) --- 0:15:10-0:25:51 Human Cannon (Matt Wilson, Anni Davey, Tim Coldwell, Zanette Clements) --- 0:25:51-0:31:37 German Wheel (Anni Davey, Mel Fyfe) --- 0:31:37-0:36:39 Double Trap (Anni Davey, Antonella Casella) --- 0:36:39-0:41:34 Sway Pole (Tim Coldwell, Michael Ling) --- 0:41:34-0:44:11 Clowning (Tim Coldwell, Antonella Casella, Zanette Clements, Matt Wilson, Mel Fyfe, Michael Ling, Scott Hone) --- 0:44:11-0:48:55 Contortion (Sosina Wogayehu, Sue Simpson) --- 0:48:55-0:50:02 Song (Matt Wilson, Mel Fyfe, Tim Coldwell) --- 0:50:02-0:50:21 Transition (Tim Coldwell, Michael Ling) --- 0:50:21-0:55:33 BMX (Sue Simpson, Scott Hone) --- 0:55:33-0:57:08 Group Bike (Matt Wilson, Sosina Wogayehu, Mel Fyfe, Anni Davey, Scott Hone, Tim Coldwell, Michael Ling, Zanette Clements, Captain Frodo) --- 0:57:08-1:02:00 Interval (Tim Coldwell) --- 1:02:00-1:07:25 Cockatoos (Michael Ling, Matt Wilson, Mel Fyfe, Antonella Casella, Zanette Clements, Anni Davey) --- 1:07:25-1:08:00 song (Matt Wilson) --- 1:08:00-1:14:40 Bounce Juggle (Sosina Wogayehu, Tim Coldwell) --- 1:14:40-1:27:40 Tennis Racquets (Captain Frodo) --- 1:27:44-1:33:52 Balances/Politicians (Matt Wilson, Zanette Clements, Mel Fyfe, Sosina Wogayehu, Michael Ling, Scott Hone, Captain Frodo, Anni Davey, Antonella Casella) --- 1:33:52-1:35:03 Song (Matt Wilson) --- 1:35:03-1:36:55 Finale Group Bike (Matt Wilson, Mel Fyfe, Sosina Wogayehu, Michael Ling, Scott Hone, Captain Frodo, Anni Davey, Tim Coldwell, Antonella Casella, Zanette Clements) --- 1:36:55-1:41:54 Untitled (Sue Simpson, John O'Hagan, Jim Dunlop, Mel Fyfe, Antonella Casella, Sosina Wogayehu, Captain Frodo, Zanette Clements, Michael Ling, Anni Davey, Tim Coldwell, Scott Hone
The Nature and Evolution of Far-Infrared Luminous Galaxies
No full textThis Thesis presents a study of the nature and evolution of far-infrared (FIR) luminous
galaxies using sources selected at 70 μm from the Spitzer Wide-area InfraRed
Extragalactic (SWIRE) Survey. The SWIRE survey was the largest of the legacy surveys
conducted by the Spitzer Space Telescope covering 49 deg² in six fields. The nature of
the FIR sources was explored by obtaining spectroscopic follow-up observations of 70 μm
sources selected from the SWIRE Lockman Hole (LH) and XMM-LSS fields. The observations
were carried out at the William Herschel Telescope (WHT) using the multi-object
spectrograph AF2/WYFFOS. The data were first reduced and calibrated using standard
IRAF routines and redshifts measured by identifying emission and absorption lines. The
data reduction and redshift measurement steps are described in detail. The spectra were
then used to determine the optical and IR properties of 70 μm sources by performing
emission line diagnostic and modelling the multiwavelength spectral energy distribution
(SED) for these objects. The evolution of FIR luminous galaxies is investigated by constructing
70 and 160 μm and total IR (TIR) luminosity functions (LFs) for all 70 and 160
μm sources in SWIRE LH and XMM-LSS with a measured spectroscopic redshift. In this
work the evolution of the 70 μm and TIR LFs was investigated to redshift, z = 1.2, and
the evolution of the 160 μm LF was computed to z = 0.5. The final work, was carried
out by including 70 and 160 μm sources with photometric redshifts and studying the evolution
of FIR luminous galaxies to z = 2 and z = 1.5 respectively. The evolution of the
TIR LF was also determined using the 70 μm sample to z = 2. The work presented in
this Thesis utilises, for the first time, a parametric Bayesian method to study the evolution
of IR galaxies
Multi-wavelength investigations of herschel-selected dusty star-forming galaxies
No full textDusty Star-Forming Galaxies (DSFGs) are found to dominate the cosmic star formation rate density at z>1 and are much more populous at z~2 than locally. Interstellar dust, as a by-product of star formation, absorbs about half of the UV and optical emission from stars and star formation and re-emit as infrared radiation. Moreover, DSFGs are likely progenitors of current-day elliptical galaxies which are commonly found in the cores of massive galaxy clusters. They are thus believed to trace massive overdensities, especially those at z>4. However, high redshift DSFGs and the environments they reside in still remain poorly understood, partially due to the lack of observations of high redshift DSFGs and their associated environments. This thesis presents a series of results which aim to better understand the nature of high redshift DSFGs and the environments they reside in. We first present 1.28GHz radio observations of three Herschel-Planck selected candidate DSFG protoclusters. With accurate positions acquired from the radio observations, we find that there are potentially z>1 overdensities aligning with two of the candidate protoclusters. We further present deep infrared observations of 13 Herschel-Planck selected candidate DSFG protoclusters. By constructing multi-wavelength photometry for sources extracted from our observations, we find that 6 of the 13 candidate DSFG protoclusters align with overdensities at 44 DSFGs. We find a mean redshift of =3.874+/-0.233 for our sample. Their SFR-stellar mass relation implies that either our z<3.8 500 sources are starbursts which are more intense than typical star-forming galaxies at similar redshifts, or their redshifts are underestimated. Finally, we discuss potential follow-up studies based on the work begun here, and the outlook of DSFG studies in the future.Open Acces
Infrared astronomy: seeing the heat : from William Herschel to the Herschel space observatory
No full textUncover the Secrets of the Universe Hidden at Wavelengths beyond Our Optical GazeWilliam Herschel's discovery of infrared light in 1800 led to the development of astronomy at wavelengths other than the optical. Infrared Astronomy - Seeing the Heat: from William Herschel to the Herschel Space Observatory explores the work in astronomy that relies on observations in the infrared. Author David L. Clements, a distinguished academic and science fiction writer, delves into how the universe works, from the planets in our own Solar System to the universe as a whole. The book first presents the major
Staff data handbook : elementary, secondary and early childhood education /
No full text"NCES 95-327.""Barbara S. Clements ... is the primary author of the document"--P. v.Mode of access: Internet
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