cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
THE EFFECTS OF PERMANGANATE PRETREATMENT ON THE MUTAGENIC ACTIVITY AND CHLOROFORM CONCENTRATIONS OF CHLORINATED HUMIC ACID SOLUTIONS
Creators: name: Baker, Jane Kratzer
Publisher: name: American University
Year: 2023

description: The objective of this research was to measure changes in mutagen production and chloroform levels in solutions of humic acid that were treated with 0-, 1-, 2-, and 4-g/L permanganate at pH 3, 7, and 9, without buffer, and at pH 3 with added buffer, before being chlorinated. Optimal conditions for the production of mutagens by chlorination of humic acid were determined after which humic acid samples were prepared, pretreated with permanganate, and chlorinated. Chloroform production and mutagenic activity were measured as were total oxidant levels and the pH values of the samples at each stage of treatment. Results showed that increasing concentrations of permanganate lowered mutagenic activity in chlorinated humic acid samples that were started at pH values of 7 and 9, but no definite conclusion could be reached for the samples started at pH value of 3, with or without added buffer. Chloroform levels did not correlate with changes in permanganate concentration except in samples started at the pH value of 3 with added buffer. Attempts were made to label, quantitate, and inactivate mutagens by derivatizing them with a chromophoric nucleophile, 4-nitrothiophenol (NTP), after which the decrease in mutagenic activity of the sample was correlated with a change in the HPLC absorbance profile at 345 nm. Several methods for removing residual chlorine from the chlorinated samples were tested and compared with respect to changes in mutagenic activity, production of mutagenic artifacts, and efficiency of residual chlorine removal. It was found that residual chlorine can be removed from samples by rotary evaporation or speed vacuum centrifugation to dryness without loss of mutagenic activity providing the pH of the sample is kept below 4 during treatment and reconstitution is with phosphate buffer at pH 3. These evacuation methods are preferable to the use of a chemical quenching agent such as ferrous sulfate. Because mutagenic activity was detected in chlorinated MilliQ water treated with ferrous sulfate, studies were undertaken to characterize and quantitate these results.
An investigation of the impact of bounded rationality on the decarbonisation of Kenya's power system
Creators: name: Kell, Alexander J. M.
name: Giarola, Sara
name: Hawkes, Adam
Publisher: name: Zenodo
Year: 2022

description: We compare Kenya’s electricity system transition to 2050 with a 2-model inter-comparison. To explore the uncertainty, we use an agent-based simulation model (MUSE) and an optimisation model (OSeMOSYS).
Adelpherupa pontica Maes 2002, sp.n.
Creators: name: Maes, K. V. N.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Crambidae
Adelpherupa
Adelpherupa pontica

description: Adelpherupa pontica sp.n.
(gures 1f, 2c, 3g, 4e)
 Diagnosis. Black line on fore wing straight. Male genitalia with straight costa, ventral part of valva rounded. Zona glabra tympani with median sclerotization forming four short branches as in A. typicota but always one branch forming an angle of 90ss degrees with the longitudinal body axis.
 Description. Ground colour reddish-brown or yellowish-brown. Black line on forewing straighter almost straight, usually clear. Two black spots clearly visible on forewing.
 Male genitalia. Uncus curved, gnathos covered with minute spines; valva with costa straight and ventral part curved to the apex of the costa; aedeagus slightly bend; vesica with a single plate-like cornutus.
 Female genitalia. Papillae anales with short and long setae, apophyses posteriores and anteriores of about equal length; ostium bursae, ductus bursae and corpus bursae membranous, antrum only slightly sclerotized.
 Tympanal organs. Zona glabra tympani with for branches, rst left and right anterior branch on an angle of 90ss degrees with the longitudinal body axis.
 Wing span. 22–31 mm.
 Distribution. Cameroon, Congo (DRC), Uganda.
 Life cycle. Unknown.
 Type material examined. HOLOTYPE: Cameroon Dschang 1400 m 23 October 1990 K. Maes, GPKM 776 (ABSRC); 4 PARATYPES: 1: Cameroon Dschang, 1400 m 08 November 1990 K. Maes, GPKM 553; 1, same locality, GPKM 554 (ABSRC); 1: same locality 23 October 1990 (ABSRC); 1: same locality 29 October 1990 (ABSRC).
 Additional material examined. (Congo, DRC) 1: Elisabethville 21 December 1949 C. H. Seydel, GPKM 14120 (MRAC); 1 same locality, 26 December 1949, GPKM 14119 (MRAC); 1: same locality 19 December 1949, GPKM 14126 (MRAC); Uganda: 1: Uganda Ruwenzori Range, Ibanda 4700 ft 20–21 August 1952 D. S. Fletcher, Pyr.Brit.Mus. Slide No. 20049 (BMNH); 1: W.Uganda, Fort Portal, March 1959 R. H. Carcasson, GPKM 20106 (NMK); 1: Masindi 30 April 1895 (Dr Ansorge), Pyr.Brit.Mus. Slide No. 20896 (BMNH); 1: Mahuba’s Kif. 1050 m 16 January 1925 A. J. T. Janse, Pyr.Brit.Mus. Slide No. 20050 (BMNH).
description: Published as part of Maes, K. V. N., 2002, Revision of the genus Adelpherupa Hampson (Lepidoptera: Pyraloidea, Crambidae, Schoenobiinae) with the description of ve new species, pp. 1707-1724 in Journal of Natural History 36 (14) on page 1723, DOI: 10.1080/00222930110061878, http://zenodo.org/record/4757434
Explicit minimisers of some nonlocal anisotropic energies: a short proof
Creators: name: Mateu, J.
name: Mora, M. G.
name: Rondi, l.
name: Scardia, L.
name: Verdera, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 31A15 (primary), 49K20 (secondary)

description: In this paper we consider nonlocal energies defined on probability measures in the plane, given by a convolution interaction term plus a quadratic confinement. The interaction kernel is $-\log|z|+α\, x^2/|z|^2, \; z=x+iy,$ with $-1 < α< 1.$ This kernel is anisotropic except for the Coulombic case $α=0.$ We present a short compact proof of the known surprising fact that the unique minimiser of the energy is the normalised characteristic function of the domain enclosed by an ellipse with horizontal semi-axis $\sqrt{1-α}$ and vertical semi-axis $\sqrt{1+α}.$ Letting $α\to 1^-$ we find that the semicircle law on the vertical axis is the unique minimiser of the corresponding energy, a result related to interacting dislocations, and previously obtained by some of the authors. We devote the first sections of this paper to presenting some well-known background material in the simplest way possible, so that readers unfamiliar with the subject find the proofs accessible
description: 17 pages, minor modifications after referee's report
THE EFFECTS OF PERMANGANATE PRETREATMENT ON THE MUTAGENIC ACTIVITY AND CHLOROFORM CONCENTRATIONS OF CHLORINATED HUMIC ACID SOLUTIONS
Creators: name: Baker, Jane Kratzer
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 41
subject: Environmental sciences

description: The objective of this research was to measure changes in mutagen production and chloroform levels in solutions of humic acid that were treated with 0-, 1-, 2-, and 4-g/L permanganate at pH 3, 7, and 9, without buffer, and at pH 3 with added buffer, before being chlorinated. Optimal conditions for the production of mutagens by chlorination of humic acid were determined after which humic acid samples were prepared, pretreated with permanganate, and chlorinated. Chloroform production and mutagenic activity were measured as were total oxidant levels and the pH values of the samples at each stage of treatment. Results showed that increasing concentrations of permanganate lowered mutagenic activity in chlorinated humic acid samples that were started at pH values of 7 and 9, but no definite conclusion could be reached for the samples started at pH value of 3, with or without added buffer. Chloroform levels did not correlate with changes in permanganate concentration except in samples started at the pH value of 3 with added buffer. Attempts were made to label, quantitate, and inactivate mutagens by derivatizing them with a chromophoric nucleophile, 4-nitrothiophenol (NTP), after which the decrease in mutagenic activity of the sample was correlated with a change in the HPLC absorbance profile at 345 nm. Several methods for removing residual chlorine from the chlorinated samples were tested and compared with respect to changes in mutagenic activity, production of mutagenic artifacts, and efficiency of residual chlorine removal. It was found that residual chlorine can be removed from samples by rotary evaporation or speed vacuum centrifugation to dryness without loss of mutagenic activity providing the pH of the sample is kept below 4 during treatment and reconstitution is with phosphate buffer at pH 3. These evacuation methods are preferable to the use of a chemical quenching agent such as ferrous sulfate. Because mutagenic activity was detected in chlorinated MilliQ water treated with ferrous sulfate, studies were undertaken to characterize and quantitate these results.
STUDY OF STRESS IN THE PERFORMANCE OF CRIMINAL INVESTIGATIVE DUTIES BY SPECIAL AGENTS IN THE UNITED STATES ARMY CRIMINAL INVESTIGATION COMMAND
Creators: name: Farkas, Frank
Publisher: name: American University
Year: 2023

description: The purpose of this study was to investigate the relationship between years of criminal investigative experience and stress experienced by Special Agents within the United States Army Criminal Investigation Command in performance of each of sixteen major duties of their job. The study was conducted with 550 Special Agents in the United States Army Criminal Investigation Command field units in the continental United States. Subjects were mailed the Special Agent Job Stress Inventory, which was developed as part of this study to determine the stress experienced by Special Agents in the United States Army Criminal Investigation Command when performing their job duties. The Kruskal-Wallis H test and the Mann-Whitney U test were employed to analyze the 505 Special Agent Job Stress Inventories which were properly completed and returned. Of the sixteen null hypotheses tested in this study, ten could not be rejected, six were rejected. Differences in years of investigative experience was found to differentially influence perceived stress levels with respect to the duties of "interviewing victims of serious crime that involves high media attention and commands interest," "interviewing a rape victim," "interviewing witnesses in conjunction with an investigation," "testifying at court proceedings," "appearing as a witness in an article 32 (grand jury) hearing," and "performing worldwide protective service missions.". It was found that, in general, Special Agents with less than three years of investigative experience perceived more stress in job performance than did those with over three years of experience. This would suggest that the United States Army Criminal Investigation Command should institute vigorous training programs which utilize realistic experiences related to a Special Agent's criminal investigative duties. It further suggests that the United States Army Criminal Investigation Command should attempt to develop policies that maximize the retention of experienced Special Agents in order to maintain a force of Special Agents who will be able to perform their job duties with minimal levels of stress.
title: Retinal development during the third larval instar of Drosophila Melanogaster
Creators: name: Tomlinson, Andrew
Publisher: name: The Open University
Year: 1984

description: One of the major aims of the developmental biologist is to establish how a highly complex multicellular organism is derived from its unicellular zygotic origin. This thesis describes an investigation into the retinal development of Drosophila melanogaster during its third larval instar in an attempt to understand how the highly ordered and complex cellular constitution of the retina is established from a group of unorganised and undifferentiated cells. The text is divided into six chapters. The first chapter is a review of the literature germane to the problem being investigated, and the second deals with the experimental methodology adopted. The remaining chapters relate the experimental findings and their implications to the problem under investigation. Chapter Three describes the main body of the research, which consists of an electron microscopic serial section investigation of the developing retinal tissue, and the utilisation of computer graphic reconstruction techniques to give a comprehensive understanding of the three dimensional cellular arrangements. The fourth chapter deals with autoradiographical studies which were undertaken to resolve an incongruity between a finding from the electron microscopic studies and an earlier literature report. Chapter Five relates an investigation into the mutation sevenless which was performed in an attempt to both assess the value of knowledge acquired from the earlier investigations, and to understand the developmental failure that leads to this particular mutant phenotype. The last chapter is a brief summary of how the retinal development during the third larval instar is better understood after the investigations described in this thesis.
Discovery of an Optical Counterpart to the Supersoft X-ray Source in the Globular Cluster M3
Creators: name: Edmonds, Peter D.
name: Kahabka, Peter
name: Heinke, Craig O.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the detection, with HST, of an optical counterpart to the transient supersoft X-ray source 1E 1339.8+2837, in the globular cluster M3. The counterpart is found near the faint end of the subgiant branch in the V vs V-I color magnitude diagram, but is extremely bright in U. Variability is detected over a range of timescales suggesting the presence of an accretion disk and perhaps also ellipsoidal variations of the subgiant secondary. The optical colors of the binary are similar to those of cataclysmic variables recently discovered in 47 Tucanae and NGC 6397. We suggest that magnetically channeled accretion may explain the relatively low X-ray luminosity of this source's supersoft state.
description: 11 pages, 3 figures, 2 tables. Accepted for publication in ApJ
Daniel Hale Williams, MD: His Legacy of African American Interns at Provident Hospital...the Northwestern Experience
Creators: name: Sims, Ronald H
Publisher: name: DigitalHub. Galter Health Sciences Library
Year: 2013
Subjects: subject: Northwestern University
subject: Daniel Hale Williams
subject: Provident Hospital
subject: African-Americans
subject: alumnus
subject: History of Medicine
subject: Schools, Medical
subject: Education, Medical, Graduate
subject: Physicians
subject: Black or African American
subject: Internship and Residency
subject: Williams, Daniel Hale, 1856-1931
subject: Chicago (Ill.)
subject: Schools, Medical/history

description: Presentation given at: Celebrating the Legacy of Provident Hospital and Training School Half-Day Conference at Chicago State University, February 8, 2013.
description: original_citation: Sims, Ronald H. Daniel Hale Williams, MD: His Legacy of African-American Interns at Provident Hospital…the Northwestern Experience, February 8, 2013. Celebrating the Legacy of Provident Hospital and Training School Half-Day Conference at Chicago State University, February 8, 2013. [Presentation].
STUDY OF STRESS IN THE PERFORMANCE OF CRIMINAL INVESTIGATIVE DUTIES BY SPECIAL AGENTS IN THE UNITED STATES ARMY CRIMINAL INVESTIGATION COMMAND
Creators: name: Farkas, Frank
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 44
subject: Human society
classificationCode: 4402
subject: Criminology
subject: FOS: Law
classificationCode: 52
subject: Psychology
subject: FOS: Psychology

description: The purpose of this study was to investigate the relationship between years of criminal investigative experience and stress experienced by Special Agents within the United States Army Criminal Investigation Command in performance of each of sixteen major duties of their job. The study was conducted with 550 Special Agents in the United States Army Criminal Investigation Command field units in the continental United States. Subjects were mailed the Special Agent Job Stress Inventory, which was developed as part of this study to determine the stress experienced by Special Agents in the United States Army Criminal Investigation Command when performing their job duties. The Kruskal-Wallis H test and the Mann-Whitney U test were employed to analyze the 505 Special Agent Job Stress Inventories which were properly completed and returned. Of the sixteen null hypotheses tested in this study, ten could not be rejected, six were rejected. Differences in years of investigative experience was found to differentially influence perceived stress levels with respect to the duties of "interviewing victims of serious crime that involves high media attention and commands interest," "interviewing a rape victim," "interviewing witnesses in conjunction with an investigation," "testifying at court proceedings," "appearing as a witness in an article 32 (grand jury) hearing," and "performing worldwide protective service missions.". It was found that, in general, Special Agents with less than three years of investigative experience perceived more stress in job performance than did those with over three years of experience. This would suggest that the United States Army Criminal Investigation Command should institute vigorous training programs which utilize realistic experiences related to a Special Agent's criminal investigative duties. It further suggests that the United States Army Criminal Investigation Command should attempt to develop policies that maximize the retention of experienced Special Agents in order to maintain a force of Special Agents who will be able to perform their job duties with minimal levels of stress.
Phase-controlled Optical PT symmetry and asymmetric light diffraction in one- and two-dimensional optical lattices
Creators: name: Naeimi, Ali Akbar
name: Darabi, Elham
name: Mortezapour, Ali
name: Naeimi, Ghasem
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose a novel scheme for asymmetric light diffraction of a weak probe field into a one-dimensional (1D) and two-dimensional (2D) lattice occupied with cold atoms. The atoms are driven into the double lambda-type configuration by a standing wave, two coupling laser fields and a probe. Our study suggests the proposed scheme is capable of forming an asymmetric diffraction as a result of inducing optical parity-time symmetry in both 1D and 2D lattices. Moreover it is demonstrated that the asymmetric pattern of diffraction can be dynamically manipulated by means of adjusting the relative phase. Furthermore it is revealed that in the case of 1D lattice (grating), variation of the intensities of the coupling fields has a significant impact on the intensity of diffraction orders in the uneven distribution of diffraction.
description: 15 pages, 7 figures
Adelpherupa albescens Hampson
Creators: name: Maes, K. V. N.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Crambidae
Adelpherupa
Adelpherupa albescens

description: Adelpherupa albescens Hampson
(gures 1b 2h, 3e, 4a)
 Adelpherupa albescens Hampson, 1919: 541
 Diagnosis. This species has the fore wings in the males narrower compared to A. avescens and A. costipunctalis The ground colour is light brown or light yellow. Valvae in the male genitalia are rectangular; aedeagus short, cornutus plate-like, covered with numerous minute spines. Tympanal organs with a median sclerotization in zona glabra tympani; rami tympani slightly bent inwards.
 Description. Ground colour light brown or light yellow. Fore wings more narrow and more elongate than A. avescens and A. costipunctalis.
 Male genitalia. Uncus short and narrow; valva rectangular, aedeagus short, cornutus plate-like covered with numerous minute spines.
 Female genitalia. Papilla anales more sclerotized than in the two former species; apophyses strongly sclerotized, well developed, long; the intersegmental membrane between the papillae anales and the 8th sclerite bear a zone, near the base of the apophyses posteriores, covered with minute spines. This zone is absent in A. avescens, A. costipunctalis and A. typicota.
 Tympanal organs. Zona glabra tympani with a median longitudinal sclerotization, rami tympani slightly bent inwards.
 Wing span. 22–28 mm.
 Distribution. Malawi and Congo (DRC): Shaba province.
 Life cycle. Unknown.
 Type material examined. Lectotype: Nyasaland, Mt.Mlanje, 1 December 1913, S. A. Neave, [B.M]1914-171, ‘ Adelpherupa albescens type Hampson’, Pyr.Br.Mus. Slide No. 6427(BMNH); Paralectotype 1: Nyasaland Mt.Mlanje 1 December 1993 S. A. Neave 1914-171, Pyr.Br.Mus. Slide No. 97 20038 (BMNH).
 Additional material examined. 2: [Malawi] Ft.Johnston January–February 1896 Dr P. Rendall (BMNH); 1 [Congo, DRC] Belgian Congo, Lulua FGO May 1933, Pyr.Br.Mus. Slide No. 20014 (BMNH); 1: Elisabethville 1 December 1950 Ch.Seydel, GPKM 14118 (MRAC); 1: same locality 17 November 1936 Ch.Seydel, GPKM 14114 (MRAC).
description: Published as part of Maes, K. V. N., 2002, Revision of the genus Adelpherupa Hampson (Lepidoptera: Pyraloidea, Crambidae, Schoenobiinae) with the description of ve new species, pp. 1707-1724 in Journal of Natural History 36 (14) on page 1719, DOI: 10.1080/00222930110061878, http://zenodo.org/record/4757434
Green function solution of generalised boundary value problems
Creators: name: Mkrtchian, Vanik E.
name: Henkel, Carsten
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We construct an expression for the Green function of a differential operator satisfying nonlocal, homogeneous boundary conditions starting from the fundamental solution of the differential operator. This also provides the solution to the boundary value problem of an inhomogeneous partial differential equation with inhomogeneous, nonlocal, and linear boundary conditions. The construction generally applies for all types of linear partial differential equations and linear boundary conditions.
description: 10 pages
A COMPARISON OF THE STUDY HABITS AND ATTITUDES OF SAMPLES OF REVERSE TRANSFER STUDENTS AND NATIVE STUDENTS ENROLLED IN A COMMUNITY COLLEGE
Creators: name: Fuller, Theodore
Publisher: name: American University
Year: 2023

description: This investigation examined the similarities and differences in the self-reported study habits and attitudes of samples of reverse transfer students (students who enrolled in a four-year college or university originally and subsequently transferred to a community college) and native students enrolled in a community college. A sample of 51 reverse transfer students and 65 native students enrolled in the fall semester of 1984 at Montgomery College completed two questionnaires: the Survey of Study Habits and Attitudes (SSHA), a questionnaire designed to assess the study habits and attitudes of college students, and the Survey of Student Characteristics (SSC), an inventory designed by the researcher to elicit descriptive and motivational information from the study samples. Six hypotheses were derived relating to the differences in the study habits and attitudes of the study samples. The hypotheses were tested by a series of t tests. The .05 level of significance was chosen as the critical value for confirmation of the hypotheses. The findings indicate that on two of the seven dimensions of the SSHA, Study Habits and Study Attitudes, reverse transfer students had significantly higher mean scores than native students. These findings suggest that reverse transfer students, as compared to native students, have more effective study habits and more positive study attitudes. There were no significant dfferences between the mean study habits and study attitudes scores for the reverse transfer student and SSHA normative samples. Similarly, there were no significant differences between the mean study habits and study attitudes scores for male reverse transfer students and female reverse transfer students. The data supported the conclusion that reverse transfer students are in less need of remedial-developmental services with respect to study habits and attitudes as compared to native students. This implies that no special programming need be designed for reverse transfer students in this regard. On the other hand, native students can benefit from remedial-developmental programs in the areas of effective study habits and positive study attitudes development.
Minimum Energy Control Strategy for an Uninhabited Airship with a Moving Gondola
Creators: name: Mansur, Ali
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2022
Subjects: Airship
Modelling
Nonlinear control
Optimization

description: An airship with a moving gondola is investigated with the goal of achieving a large pitch angle and of minimizing the total energy consumption required to goal position. The airship in this study is equipped with different actuation tools such as a moving gondola and a vectoring thrust, which can be used for various flight modes. The efficiency of the actuation methods employed is studied and compared in various flight scenarios, based on the airship’s ability to reach the desired position while consuming the least amount of energy. The nonlinear dynamic model is derived using Newton-Euler equations. Backstepping and incremental nonlinear dynamic inversion (INDI) controllers are designed to track a desired trajectory by controlling the position of the gondola and the thrust. The dynamic models are then implemented and simulated in the Matlab/Simulink to evaluate the effectiveness of the controllers in different environmental conditions. The simulation results show the effectiveness of the controllers used, and a larger pitch angle of -89o, can be reached thanks to the movement of the gondola to the front of the airship on the curved keel. The airship prototype was used for the experimental test to evaluate the pitch tracking performance of each of the controllers. The experimental results show that the prototype used can generate a -90o pitch angle, thereby improving manoeuvrability and allowing for rapid changes in altitude. The energy model is developed to evaluate and compare the energy required by the airship for ascent, cruise, and descent flights, using different actuation methods. The effectiveness of the composite control strategy is demonstrated by completing the flight mission with the least amount of energy consumed. An optimization method is then developed to find the optimum design configuration to reduce the cost function, based on energy consumption, of the different flight scenarios while always respecting the design constraints. The Heuristic technique is used to obtain the optimal flight trajectory based on the platform’s ability to complete the desired mission while minimising energy consumption. The results show that for pitch tracking, the vectored thrust has a rapid response, and the required thrust is high. Therefore, this configuration requires more energy than the moving gondola control configuration, in all cases studied. The composite configuration is found to be the most efficient method for completing the flight trajectory with the least amount of energy. The total energy consumption of the entire flight is reduced by about 17% by using the optimization algorithm to select the best actuation method for each flight mode.
A COMPARISON OF THE STUDY HABITS AND ATTITUDES OF SAMPLES OF REVERSE TRANSFER STUDENTS AND NATIVE STUDENTS ENROLLED IN A COMMUNITY COLLEGE
Creators: name: Fuller, Theodore
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3904
subject: Specialist studies in education

description: This investigation examined the similarities and differences in the self-reported study habits and attitudes of samples of reverse transfer students (students who enrolled in a four-year college or university originally and subsequently transferred to a community college) and native students enrolled in a community college. A sample of 51 reverse transfer students and 65 native students enrolled in the fall semester of 1984 at Montgomery College completed two questionnaires: the Survey of Study Habits and Attitudes (SSHA), a questionnaire designed to assess the study habits and attitudes of college students, and the Survey of Student Characteristics (SSC), an inventory designed by the researcher to elicit descriptive and motivational information from the study samples. Six hypotheses were derived relating to the differences in the study habits and attitudes of the study samples. The hypotheses were tested by a series of t tests. The .05 level of significance was chosen as the critical value for confirmation of the hypotheses. The findings indicate that on two of the seven dimensions of the SSHA, Study Habits and Study Attitudes, reverse transfer students had significantly higher mean scores than native students. These findings suggest that reverse transfer students, as compared to native students, have more effective study habits and more positive study attitudes. There were no significant dfferences between the mean study habits and study attitudes scores for the reverse transfer student and SSHA normative samples. Similarly, there were no significant differences between the mean study habits and study attitudes scores for male reverse transfer students and female reverse transfer students. The data supported the conclusion that reverse transfer students are in less need of remedial-developmental services with respect to study habits and attitudes as compared to native students. This implies that no special programming need be designed for reverse transfer students in this regard. On the other hand, native students can benefit from remedial-developmental programs in the areas of effective study habits and positive study attitudes development.
PROGRAMS UNDER SIEGE: CONGRESSIONAL COMMITTEE OVERSIGHT AS A DEFENSIVE STRATEGY AGAINST BUDGETARY RETRENCHMENT AND TERMINATION
Creators: name: Hunt, David W.
Publisher: name: American University
Year: 2023

description: Social programs have been targets for budgetary cutback proposals in the 1980s. Political science literature written before 1980 described subgovernment programs as highly resistant to external interference and cutback. In Congressional literature oversight was cited as a likely Congressional protective or preemptive response to Executive attempts to control committee programs. Within the context of Reagan Administration cutback proposals, this research investigated the use of oversight as a subgovernment defensive strategy against budgetary cutback. Four social programs scheduled for termination or retrenchment were selected as case studies of defensive oversight. The First Session of the Ninety-Seventh Congress was chosen as the research setting due to the presence of several factors conductive to the success of cutback proposals--divided party control in Congress, a reduced Democratic House majority, and President Reagan's first legislative session. Data was drawn from 78 interviews with 55 Congressional, interest group, and agency officials. Defensive oversight occurred in all four programs. Oversight hearings for the termination-slated Community Action Program were designed to undermine the Administration's program proposal. This strategy was overcome by the budget reconciliation process. Oversight Hearings for the termination-slated Legal Services Program resulted in bipartisan program amendments which enabled moderate Republicans and Democrats to vote for reauthorization. Oversight activities of a latent form occurred for the retrenchment-slated Food Stamp Program. These hearings enabled program defenders to fill the record with information on program performance which was used as political ammunition in later mark-up and floor sessions. In 1981 Head Start was scheduled for and received a funding increase. In the 1982 oversight hearing this subgovernment demonstrated extensive grassroots support. A departmental retrenchment proposal died in these hearings. Congressional committee officials originated the idea for defensive oversight hearings. Many interest groups reinforced but did not solicit this committee strategy. Agency officials only assisted in staging the hearings. This research has verified that oversight is used for defensive purposes and that the budgetary cutback environment of the 1980s is a favorable setting for defensive oversight.
Vacuum fluctuations and moving atoms/detectors: From Casimir-Polder to Unruh effect
Creators: name: Hu, B. L.
name: Roura, A.
name: Shresta, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this note we report on some new results \cite{SHP} on corrections to the Casimir-Polder \cite{caspol} retardation force due to atomic motion and present a preliminary (unpublished) critique on one recently proposed cavity QED detection scheme of Unruh effect \cite{Unr76}. These two well-known effects arise from the interaction between a moving atom or detector with a quantum field under some boundary conditions introduced by a conducting mirror/cavity or dielectric wall. The Casimir-Polder force is a retardation force on the atom due to the dressing of the atomic ground state by the vacuum electromagnetic field in the presence of a conducting mirror or dielectric wall. We have recently provided an improved calculation by treating the mutual influence of the atom and the (constrained) field in a self-consistent way. For an atom moving adiabatically, perpendicular to a mirror, our result finds a coherent retardation correction up to twice the stationary value. Unruh effect refers loosely to the fact that a uniformly accelerated detector feels hot. Two prior schemes have been proposed for the detection of `Unruh radiation', based on charged particles in linear accelerators and storage rings. Here we are interested in a third scheme proposed recently by Scully {\it et al} \cite{Scully03} involving the injection of accelerated atoms into a microwave or optical cavity. We analyze two main factors instrumental to the purported success in this scheme, the cavity factor and the sudden switch-on factor. We conclude that the effects engendered from these factors are unrelated to the Unruh effect.
description: to appear in J. of Optics B -- condensed matter
Arming, Pseudotyping, and Enhancing the Efficacy of Oncolytic Measles Virus for a Better Cancer Therapeutic
Creators: name: Neault, Serge
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2022
Subjects: Oncolytic
Cancer
Measles
Pseudotyping
Virology
Therapeutic

description: Everyone knows someone affected by cancer. It is a heterogeneous malignancy requiring different approaches depending on the source, aggressiveness, and stage of the disease. To this end, innovative cancer therapies are required to conquer the unique obstacles posed by each type of cancer. One emerging therapeutic avenue employs the use of oncolytic viruses. Oncolytic viruses are predominantly attenuated viruses that specifically replicate in cancerous cells, which often have defective anti-viral responses, while leaving normal tissue unaffected. The inability of certain cancers to counter viral infections stems from a defective interferon pathway utilized by the malignant cells for unregulated proliferation. This ingenious exploitation of the cancer’s double-edged attribute led to numerous oncolytic virus clinical trials presently culminating in an approved oncolytic virus therapy, Talimogene laherparepvec, for the treatment of advanced melanoma. Oncolytic measles virus is currently being evaluated in several pre-clinical and clinical cancer trials. This virus offers many advantages as a replicating cancer therapeutic such as an excellent safety profile, oncotropic traits, and permissiveness for enhancement via genetic engineering. Even so, further improvements of oncolytic measles virus may be required to overcome the various complexities that each type of cancer poses. Some concerns are also inherent to the use of measles virus itself, such as pre-existing neutralizing antibodies towards the virus from routine immunization. This thesis outlines three distinct projects which aim to improve oncolytic measles virus as a cancer therapeutic. Firstly, a novel pseudotyping platform for oncolytic measles virus is described as an efficient and robust system for viral envelope exchange for the purpose of evading neutralizing antibodies. Secondly, oncolytic measles virus armed with granzyme B displayed increased oncolytic and proinflammatory activity. Finally, synergizing oncolytic measles virus with viral sensitizers enhanced the replication and cancer cell killing ability of the virus in both human and murine cancer models. Each project uniquely demonstrated advances in improving oncolytic measles virus so it may surmount the current challenges facing it as a cancer therapeutic.
PROGRAMS UNDER SIEGE: CONGRESSIONAL COMMITTEE OVERSIGHT AS A DEFENSIVE STRATEGY AGAINST BUDGETARY RETRENCHMENT AND TERMINATION
Creators: name: Hunt, David W.
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 44
subject: Human society
classificationCode: 4408
subject: Political science
subject: FOS: Political science

description: Social programs have been targets for budgetary cutback proposals in the 1980s. Political science literature written before 1980 described subgovernment programs as highly resistant to external interference and cutback. In Congressional literature oversight was cited as a likely Congressional protective or preemptive response to Executive attempts to control committee programs. Within the context of Reagan Administration cutback proposals, this research investigated the use of oversight as a subgovernment defensive strategy against budgetary cutback. Four social programs scheduled for termination or retrenchment were selected as case studies of defensive oversight. The First Session of the Ninety-Seventh Congress was chosen as the research setting due to the presence of several factors conductive to the success of cutback proposals--divided party control in Congress, a reduced Democratic House majority, and President Reagan's first legislative session. Data was drawn from 78 interviews with 55 Congressional, interest group, and agency officials. Defensive oversight occurred in all four programs. Oversight hearings for the termination-slated Community Action Program were designed to undermine the Administration's program proposal. This strategy was overcome by the budget reconciliation process. Oversight Hearings for the termination-slated Legal Services Program resulted in bipartisan program amendments which enabled moderate Republicans and Democrats to vote for reauthorization. Oversight activities of a latent form occurred for the retrenchment-slated Food Stamp Program. These hearings enabled program defenders to fill the record with information on program performance which was used as political ammunition in later mark-up and floor sessions. In 1981 Head Start was scheduled for and received a funding increase. In the 1982 oversight hearing this subgovernment demonstrated extensive grassroots support. A departmental retrenchment proposal died in these hearings. Congressional committee officials originated the idea for defensive oversight hearings. Many interest groups reinforced but did not solicit this committee strategy. Agency officials only assisted in staging the hearings. This research has verified that oversight is used for defensive purposes and that the budgetary cutback environment of the 1980s is a favorable setting for defensive oversight.
Markov Chain Monte Carlo with Neural Network Surrogates: Application to Contaminant Source Identification
Creators: name: Zhou, Zitong
name: Tartakovsky, Daniel M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: Subsurface remediation often involves reconstruction of contaminant release history from sparse observations of solute concentration. Markov Chain Monte Carlo (MCMC), the most accurate and general method for this task, is rarely used in practice because of its high computational cost associated with multiple solves of contaminant transport equations. We propose an adaptive MCMC method, in which a transport model is replaced with a fast and accurate surrogate model in the form of a deep convolutional neural network (CNN). The CNN-based surrogate is trained on a small number of the transport model runs based on the prior knowledge of the unknown release history. Thus reduced computational cost allows one to reduce the sampling error associated with construction of the approximate likelihood function. As all MCMC strategies for source identification, our method has an added advantage of quantifying predictive uncertainty and accounting for measurement errors. Our numerical experiments demonstrate the accuracy comparable to that of MCMC with the forward transport model, which is obtained at a fraction of the computational cost of the latter.
THE RELATIONSHIP BETWEEN SELECTED INSTITUTIONAL/PERSONAL CHARACTERISTICS AND THE BELIEFS OF INTERNATIONAL STUDENT ADVISORS ON THE RELATIVE IMPORTANCE OF EIGHT COMPONENTS OF THEIR WORK
Creators: name: Araya, Belainesh
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3904
subject: Specialist studies in education

description: The study was conducted to ascertain the beliefs of international student advisors about the relative importance that should be given to eight components of their work and to determine the relationship between these beliefs and each of three personal/institutional characteristics. The eight components of work are: Counseling/Advising, Immigration and Naturalization, Social and Cultural Programming, Orientation, Program Planning and Review, Inter-institutional Relations, Liaison and Public Relations and Office/Budget Administration. The personal/institutional characteristics are: educational background of the international student advisor, years of experience as an international student advisor, and size of the institution in terms of international student enrollment. The following research hypotheses were postulated: (1) There is a significant relationship between the educational background of the international student advisor and his/her ordering of eight components of work; (2) There is a significant relationship between the years of experience as an international student advisor and his/her ordering of eight components of work; (3) There is a significant relationship between the size of the institution in terms of international student enrollment and the advisor's ordering of eight components of work. Two instruments were developed and distributed to 188 international student advisors at four-year post-secondary institutions with enrollments of 300 and more international students. Responses from 155 subjects (82.4 percent) were analyzed and profiles were drawn to determine the modal characteristics of the respondents. Each of the three study hypotheses was rejected. The relationship between the international student advisor's ordering of the "should be" importance of the eight components of his/her work was not significantly related to: his/her educational background, years of experience as an international student advisor, or size of institution in terms of international student enrollment. In addition it was found that International student advisors believe the following should be the most important components of their work: Counseling/Advising, Immigration and Naturalization, Social and Cultural Programming, and Orientation. A study conclusion was that international student advisors prefer work tasks allied to the helping professions. This suggests the implication that development of counseling skills should be an integral part of their job preparation.
SUSY-QCD Corrections to $W^{\pm}H^{\mp}$ Associated Production at the CERN Large Hadron Collider
Creators: name: Zhao, Jun
name: Li, Chong Sheng
name: Li, Qiang
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the SUSY-QCD corrections to the inclusive total cross sections of the associated production processes $pp\to W^{\pm}H^{\mp}+X$ in the Minimal Supersymmetric Standard Model(MSSM) at the CERN Large Hadron Collider(LHC). The SUSY-QCD corrections can increase and decrease the total cross sections depending on the choice of the SUSY parameters. When $μ<0$ the SUSY-QCD corrections increase the leading-order (LO) total cross sections significantly for large tan$β$ ($\sim 40$), which can exceed 10% and have the opposite sign with respect to the QCD and the SUSY-EW corrections, and thus cancel with them to some extent. Moreover, we also investigate the effects of the SUSY-QCD on the differential distribution of cross sections in transverse momentum $p_T$ and rapidity Y of W-boson, and the invariant mass $M_{W^+H^-}$.
description: 24 pages, 10 figures; minor changes in references; two figures and the corresponding disccusions added; a version to appear in PRD