cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Simulations of recoiling black holes: adaptive mesh refinement and radiative transfer
Creators: name: Meliani, Zakaria
name: Mizuno, Yosuke
name: Olivares, Hector
name: Porth, Oliver
name: Rezzolla, Luciano
name: Younsi, Ziri
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: (Abridged) We here continue our effort to model the behaviour of matter when orbiting or accreting onto a generic black hole by developing a new numerical code employing advanced techniques geared solve the equations of in general-relativistic hydrodynamics. The new code employs a number of high-resolution shock-capturing Riemann-solvers and reconstruction algorithms, exploiting the enhanced accuracy and the reduced computational cost of AMR techniques. In addition, the code makes use of sophisticated ray-tracing libraries that, coupled with general-relativistic radiation-transfer calculations, allow us to compute accurately the electromagnetic emissions from such accretion flows. We validate the new code by presenting an extensive series of stationary accretion flows either in spherical or axial symmetry and performed either in 2D or 3D. In addition, we consider the highly nonlinear scenario of a recoiling black hole produced in the merger of a supermassive black hole binary interacting with the surrounding circumbinary disc. In this way we can present, for the first time, ray-traced images of the shocked fluid and the light-curve resulting from consistent general-relativistic radiation-transport calculations from this process. The work presented here lays the ground for the development of a generic computational infrastructure employing AMR techniques to deal accurately and self-consistently with accretion flows onto compact objects. In addition to the accurate handling of the matter, we provide a self-consistent electromagnetic emission from these scenarios by solving the associated radiative-transfer problem. While magnetic fields are presently excluded from our analysis, the tools presented here can have a number of applications to study accretion flows onto black holes or neutron stars.
description: 20 pages, 20 figures, accepted for publication in A&A
A detached double X-ray tail in the merging galaxy cluster Z8338 with a large double tail
Creators: name: Ge, Chong
name: Sun, Ming
name: Nulsen, Paul E. J.
name: Sarazin, Craig
name: Markevitch, Maxim
name: Schellenberger, Gerrit
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: When subhalos infall into galaxy clusters, their gas content is ram pressure stripped by the intracluster medium (ICM) and may turn into cometary tails. We report the discovery of two spectacular X-ray double tails in a single galaxy cluster, Z8338, revealed by 70 ks Chandra observations. The brighter one, with an X-ray bolometric luminosity of $3.9 \times 10^{42}{\rm\ erg\ s}^{-1}$, is a detached tail stripped from the host halo and extended at least 250 kpc in projection. The head of the detached tail is a cool core with the front tip of the cold front $\sim$ 30 kpc away from the nucleus of its former host galaxy. The cooling time of the detached cool core is $\sim 0.3$ Gyr. For the detached gas, the gravity of the once-associated dark matter halo further enhances the Rayleigh-Taylor (RT) instability. From its survival, we find that a magnetic field of a few $μ$G is required to suppress the hydrodynamic instability. The X-ray temperature in the tail increases from 0.9 keV at the front tip to 1.6 keV in the wake region, which suggests the turbulent mixing with the hotter ICM. The fainter double X-ray tail, with a total X-ray luminosity of $2.7 \times 10^{42}{\rm\ erg\ s}^{-1}$, appears to stem from the cool core of a subcluster in Z8338, and likely was formed during the ongoing merger. This example suggests that X-ray cool cores can be displaced and eventually destroyed by mergers, while the displaced cool cores can survive for some extended period of time.
description: 11 pages, 8 figures, MNRAS accepted
Effect of nitrogen deposition on China’s terrestrial carbon uptake in the context of multifactor environmental changes
Creators: name: Lu, Chaoqun
name: Tian, Hanqin
name: Liu, Mingliang
name: Ren, Wei
name: Xu, Xiaofeng
name: Chen, Guangshen
name: Zhang, Chi
Publisher: name: Ecological Society of America
Year: 2012
Subjects: carbon dynamics; China; dynamic land ecosystem model; nitrogen deposition; terrestrial ecosystem

description: The amount of atmospheric nitrogen (N) deposited on the land surface has increased globally and by nearly five times in China from 1901 to 2005. Little is known about how elevated reactive N input has affected the carbon (C) sequestration capability of China’s terrestrial ecosystems, largely due to the lack of reliable data on N deposition. Here we have used a newly developed data set of historical N deposition at a spatial resolution of 10 km3 10 km in combination with other gridded historical information on climate, atmospheric composition, land use, and land management practices to drive a process-based ecosystem model, the dynamic land ecosystem model (DLEM) for examining how increasing N deposition and its interactions with other environmental changes have affected C fluxes and storage in China’s terrestrial ecosystems during 1901–2005. Our model simulations indicate that increased N deposition has resulted in a net C sink of 62 Tg C/yr (1 Tg¼1012 g) in China’s terrestrial ecosystems, totaling up to 6.51 Pg C (1 Pg¼1015 g) in the past 105 years. During the study period, the N-induced C sequestration can compensate for more than 25% of fossil-fuel CO2 emission from China. The largest C sink was found in southeast China, a region that experienced the most significant increase of N deposition in the period 1901–2005. However, the net primary productivity induced by per-unit N deposition (referred to as ecosystem N use efficiency, ENUE, in this paper) has leveled off or declined since the 1980s. This indicates that part of the deposited N may not be invested to stimulate plant growth, but instead leave the ecosystem by various pathways. Except shrubland and northwest/southwest China, signs of N saturation are apparent in the rest major biome types and regions, with ENUE peaking in the 1980s and leveling off or declining thereafter. Therefore, to minimize the excessive N pollution while keeping the N-stimulated C uptake in China’s terrestrial ecosystems, optimized management practices should be taken to increase N use efficiency rather than to keep raising N input level in the near future.
Designing dose finding studies with an active control for exponential families
Creators: name: Dette, Holger
name: Kettelhake, Katrin
name: Bretz, Frank
Publisher: name: Technische Universität Dortmund
Year: 2014
Subjects: subject: optimal designs
subject: active control
subject: dose estimation
subject: dose response
subject: 310
subject: 330
subject: 620

description: In a recent paper Dette et al. (2014) introduced optimal design problems for dose finding studies with an active control. These authors concentrated on regression models with normal distributed errors (with known variance) and the problem of determining optimal designs for estimating the smallest dose, which achieves the same treatment effect as the active control. This paper discusses the problem of designing activecontrolled dose finding studies from a broader perspective. In particular, we consider a general class of optimality criteria and models arising from an exponential family, which are frequently used analyzing count data. We investigate under which circumstances optimal designs for dose finding studies including a placebo can be used to obtain optimal designs for studies with an active control. Optimal designs are constructed for several situations and the differences arising from different distributional assumptions are investigated in detail. In particular, our results are applicable for constructing optimal experimental designs to analyze active-controlled dose finding studies with discrete data, and we illustrate the efficiency of the new optimal designs with two recent examples from our consulting projects.
description: Discussion Paper / SFB 823;36/2014
title: Психофизиология профессиональной деятельности
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2021

description: Учебное пособие содержит основные сведения по психофизиологии профессиональной деятельности и смежным с нею дисциплинам — психологии и эргономике. Подробно рассмотрены познавательные процессы человека и их роль в профессиональной деятельности, психология индивидуальных различий, дано определение понятию «характер», представлена классификация акцентуаций характера. Описаны функциональные состояния человека в процессе труда, детально представлены функции эмоций, теории возникновения эмоциональных состояний и структуры головного мозга, отвечающие за проявления эмоций. Изложены вопросы психофизиологии стресса и способы психической саморегуляции. Особое внимание уделено проблеме влияния социально-психологического климата на психофизиологические состояния персонала. Учебное пособие предназначено для студентов, обучающихся по направлению подготовки 38.03.03 «Управление персоналом», изучающих дисциплину «Психофизиология профессиональной деятельности».
Can mixed assessment methods make biology classes more equitable
Creators: name: Sehoya, Cotner
name: Ballen, Cissy J.
Publisher: name: PUBLIC LIBRARY of SCIENCE
Year: 2017
Subjects: WOMENS MATH PERFORMANCE
STEREOTYPE THREAT
Female Role Models
INTRODUCTORY BIOLOGY
INTELLECTUAL-PERFORMANCE

description: Many factors have been proposed to explain the attrition of women in science, technology, engineering and math fields, among them the lower performance of women in introductory courses resulting from deficits in incoming preparation. We focus on the impact of mixed methods of assessment, which minimizes the impact of high-stakes exams and rewards other methods of assessment such as group participation, low-stakes quizzes and assignments, and in-class activities. We hypothesized that these mixed methods would benefit individuals who otherwise underperform on high-stakes tests. Here, we analyze gender-based performance trends in nine large (N > 1000 students) introductory biology courses in fall 2016. Females underperformed on exams compared to their male counterparts, a difference that does not exist with other methods of assessment that compose course grade. Further, we analyzed three case studies of courses that transitioned their grading schemes to either de-emphasize or emphasize exams as a proportion of total course grade. We demonstrate that the shift away from an exam emphasis consequently benefits female students, thereby closing gaps in overall performance. Further, the exam performance gap itself is reduced when the exams contribute less to overall course grade. We discuss testable predictions that follow from our hypothesis, and advocate for the use of mixed methods of assessments (possibly as part of an overall shift to active learning techniques). We conclude by challenging the student deficit model, and suggest a course deficit model as explanatory of these performance gaps, whereby the microclimate of the classroom can either raise or lower barriers to success for underrepresented groups in STEM.
Constraints to the semimajor axis of outer particles with nodal librations by general relativity effects
Creators: name: Macarena, Zanardi
name: Carlos, de Elía Gonzalo
name: Agustín, Dugaro
name: Florencia, Coronel Carla
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We study nodal librations of outer particles in the framework of the elliptical restricted three-body problem including general relativity (GR) effects. From an analytical treatment based on secular interactions up to quadrupole level, we derive equations that define the nodal libration region of an outer test particle, which depends on the physical and orbital parameters of the bodies of the system. From this, we analyze how the GR constrains the semimajor axis of outer test particles that experience nodal librations under the effects of an inner planet around a single stellar component. Such an upper limit of the semimajor axis, which is called a2,lim , depends on the mass of the star ms, the mass m1, the semimajor axis a1, and the eccentricity e1 of the inner planet, and the eccentricity e2 of the outer test particle. On the one hand, our results show that the greater m1, a1, and e2 and the smaller ms, the greater the value of a2,lim. On the other hand, for fixed ms, m1, a1, and e2, a2,lim does not strongly depend on e1, except for large values of such an orbital parameter. We remark that N-body experiments of particular scenarios that include GR show results consistent with the analytical criteria derived in the present research. Moreover, the study of hypothetical small body populations of real systems composed of a single star and an inner planetary-mass companion show that the GR effects can play a very important role in their global dynamics.
description: 11 pages, 10 figures. Accepted for publication in MNRAS
On the detectability of strong lensing in near-infrared surveys
Creators: name: Holloway, Philip
name: Verma, Aprajita
name: Marshall, Philip J.
name: More, Anupreeta
name: Tecza, Matthias
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present new lensing frequency estimates for existing and forthcoming deep near-infrared surveys, including those from JWST and VISTA. The estimates are based on the JAdes extraGalactic Ultradeep Artificial Realisations (JAGUAR) galaxy catalogue accounting for the full photometry and morphologies for each galaxy. Due to the limited area of the JAGUAR simulations, they are less suited to wide-area surveys, however we also present extrapolations to the surveys carried out by Euclid and the Nancy Grace Roman Space Telescope. The methodology does not make assumptions on the nature of the lens itself and probes a wide range of lens masses. The lenses and sources are selected from the same catalogue and extend the analysis from the visible bands into the near-infrared. After generating realistic simulated lensed sources and selecting those that are detectable with SNR>20, we verify the lensing frequency expectations against published lens samples selected in the visible, finding them to be broadly consistent. We find that JWST could yield ~ 65 lensed systems in COSMOS-Web, of which ~ 25 per cent have source redshifts >4. Deeper, narrower programs (e.g. JADES-Medium) will probe more typical source galaxies (in flux and mass) but will find fewer systems (~ 25). Of the surveys we investigate, we find 55-80 per cent have detectable multiple imaging. Forthcoming NIR surveys will likely reveal new and diverse strong lens systems including lensed sources that are at higher redshift (JWST) and dustier, more massive and older (Euclid NISP) than those typically detected in the corresponding visible surveys.
description: 14 pages, 9 figures, accepted for publication by MNRAS
Clearing the Skies: A deep network architecture for single-image rain removal
Creators: name: Fu, Xueyang
name: Huang, Jiabin
name: Ding, Xinghao
name: Liao, Yinghao
name: Paisley, John
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We introduce a deep network architecture called DerainNet for removing rain streaks from an image. Based on the deep convolutional neural network (CNN), we directly learn the mapping relationship between rainy and clean image detail layers from data. Because we do not possess the ground truth corresponding to real-world rainy images, we synthesize images with rain for training. In contrast to other common strategies that increase depth or breadth of the network, we use image processing domain knowledge to modify the objective function and improve deraining with a modestly-sized CNN. Specifically, we train our DerainNet on the detail (high-pass) layer rather than in the image domain. Though DerainNet is trained on synthetic data, we find that the learned network translates very effectively to real-world images for testing. Moreover, we augment the CNN framework with image enhancement to improve the visual results. Compared with state-of-the-art single image de-raining methods, our method has improved rain removal and much faster computation time after network training.
Learning Concept Hierarchies through Probabilistic Topic Modeling
Creators: name: Anoop, V. S.
name: Asharaf, S.
name: Deepak, P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: With the advent of semantic web, various tools and techniques have been introduced for presenting and organizing knowledge. Concept hierarchies are one such technique which gained significant attention due to its usefulness in creating domain ontologies that are considered as an integral part of semantic web. Automated concept hierarchy learning algorithms focus on extracting relevant concepts from unstructured text corpus and connect them together by identifying some potential relations exist between them. In this paper, we propose a novel approach for identifying relevant concepts from plain text and then learns hierarchy of concepts by exploiting subsumption relation between them. To start with, we model topics using a probabilistic topic model and then make use of some lightweight linguistic process to extract semantically rich concepts. Then we connect concepts by identifying an "is-a" relationship between pair of concepts. The proposed method is completely unsupervised and there is no need for a domain specific training corpus for concept extraction and learning. Experiments on large and real-world text corpora such as BBC News dataset and Reuters News corpus shows that the proposed method outperforms some of the existing methods for concept extraction and efficient concept hierarchy learning is possible if the overall task is guided by a probabilistic topic modeling algorithm.
Constraining gas metal mixing strength in simulations using observations of the Milky Way's disc
Creators: name: Sarrato-Alós, Jorge
name: Brook, Christopher
name: Di Cintio, Arianna
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: This work explores the mixing rate of metals in the interstellar medium (ISM), comparing observational constraints from our solar neighbourhood to high resolution cosmological hydrodynamical simulations of Milky Way (MW)-like galaxies. The mixing rate, described by the coefficient C, is varied in simulations between 0 and 0.05, with resultant simulated galaxies compared to observations of metallicity dispersion in young star clusters, HII regions and neutral gas in the disc of the MW. A value of C between 0.003125 and 0.0125 is found to self-consistently match a range of observables, with a best estimate of C=0.0064$\pm$0.0004. We demonstrate that the relationship between metal dispersion in young stars, HII regions and neutral gas, versus the coefficient C, can be described by a power law. These constrained mixing rates infer a comparatively well mixed ISM in the solar neighbourhood, at odds with some recent observations that have reported a highly inhomogeneous ISM. The degree of mixing suggested by this work is lower than what often employed in many hydrodynamical simulations. Our results have implications for studying the metallicity distribution of stars as well as of gas in the interstellar and circumgalactic media.
description: 7 pages, 3 figures, accepted for publication in MNRAS
Net superoxide levels: steeper increase with activity in cooler female and hotter male lizards
Creators: name: Ballen, Cissy J.
name: Healey, Mo
name: Wilson, Mark
name: Tobler, Michael
name: Wapstra, Erik
name: Olsson, Mats
Publisher: name: COMPANY OF BIOLOGISTS LTD; Australian Research Council
Year: 2012
Subjects: reactive oxygen species
thermoregulation
lizard
OXIDATIVE STRESS
TEMPERATURE
GENERATION
EVOLUTION

description: Ectotherms increase their body temperature in response to ambient heat, thereby elevating their metabolic rate. An often inferred consequence of this is an overall upregulation of gene expression and energetic expenditure, and a concomitant increased production of reactive oxygen species (e. g. superoxide) and, perhaps, a shortened lifespan. However, recent work shows that this may be a superficial interpretation. For example, sometimes a reduced temperature may in fact trigger up-regulation of gene expression. We studied temperature and associated activity effects in male and female Australian painted dragon lizards (Ctenophorus pictus) by allowing the lizards to bask for 4 h versus 12 h, and scoring their associated activity (inactive versus active basking and foraging). As predicted, long-basking lizards (hereafter 'hot') showed heightened activity in both sexes, with a more pronounced effect in females. We then tested for sex-specific effects of basking treatment and activity levels on the increase in net levels of superoxide. In males, short-baskers (hereafter 'cold') had significantly more rapidly decreasing levels of superoxide per unit increasing activity than hot males. In females, however, superoxide levels increased faster with increasing activity in the cold than in the hot basking treatment, and females earlier in the ovarian cycle had lower superoxide levels than females closer to ovulation. In short, males and females differ in how their levels of reactive oxygen species change with temperature-triggered activity.
D10.3 Relevant standardization landscape and applicable standards
Creators: name: Fatigue4Light partners
Publisher: name: Zenodo
Year: 2021

description: The Spanish Association for Standardization (UNE), as a European Standardization Body, is a partner in the Fatigue4Light project to provide support regarding the standardization tasks included in the project. In order to fulfil this commitment, this deliverable, D10.3 "Relevant standardization landscape and applicable standards", has been prepared to guide the partners about the published standards and standards under development that can be applicable to Fatigue4Light.

This deliverable also contains, the fields of interest related to Fatigue4Light project, given by its consortium, and, from this starting point, identification and analysis of the standardization technical committees (TC) related with the project as well as of the published standards and standards under development that could be useful and relevant for the project activities.
description: The Fatigue4Light project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No. 101006844.
Aharonov-Bohm effect in a helical ring with long-range hopping: Effects of Rashba spin-orbit interaction and disorder
Creators: name: Dutta, Paramita
name: Saha, Arijit
name: Jayannavar, A. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study Aharonov-Bohm effect in a two-terminal helical ring with long-range hopping in presence of Rashba spin-orbit interaction. We explore how the spin polarization behavior changes depending on the applied magnetic flux and the incoming electron energy. The most interesting feature that we articulate in this system is that zero-energy crossings appear in the energy spectra at $Φ=0$ and also at integer multiples of half-flux quantum values ($n Φ_0/2$, $n$ being an integer) of the applied magnetic flux. We investigate the transport properties of the ring using Green's function formalism and find that the zero energy transmission peaks corresponding to those zero energy crossings vanish in presence of Rashba spin-orbit interaction. We also incorporate static random disorder in our system and show that the zero energy crossings and transmission peaks are not immune to disorder even in absence of Rashba spin-orbit interaction. The latter prevents the possibility of behaving these helical states in the ring like topological insulator edge states.
description: This is the published version
title: Экономическая безопасность предприятия (организации)
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2022

description: В учебнике рассматриваются проблемы повышения уровня экономической безопасности и снижения рисков деятельности предприятия. Основное внимание уделяется функциональным составляющим экономической безопасности и методам их оценки. Приводятся практические аспекты организации работы службы экономической безопасности и оценки ее работы. Представлены практические примеры исследования уровня экономической безопасности различными методами. Акцентировано внимание на организации системы внутреннего контроля предприятия для борьбы с корпоративным мошенничеством. Подготовлен в соответствии с требованиями Федерального государственного образовательного стандарта высшего образования. Предназначен для студентов, обучающихся по укрупненной группе специальностей и направлений подготовки 38.00.00 «Экономика и управление», изучающих дисциплины «Экономическая безопасность», «Экономическая безопасность предприятия», «Экономическая безопасность организации». Издание может представлять интерес для практических работников негосударственной системы экономической безопасности, правоохранительных органов, органов и подразделений финансового мониторинга, финансово-кредитных учреждений, аудиторов, адвокатов и других лиц, заинтересованных в комплексном обеспечении безопасности бизнеса.
On the origin of planetary-mass objects in NGC1333
Creators: name: Parker, Richard J.
name: de Oliveira, Catarina Alves
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The dominant formation mechanism of brown dwarfs and planetary mass objects in star-forming regions is presently uncertain. Do they form like stars, via the collapse and fragmentation of cores in Giant Molecular clouds, or do they form like planets in the discs around stars and are ejected via dynamical interactions? In this paper, we quantify the spatial distribution of substellar objects in NGC1333, in particular focusing on planetary-mass objects that have been the target of recent deep imaging observations. We find that these objects have a spatial distribution that is indistinguishable from the stars, and more massive brown dwarfs. We also analyse N-body simulations and find that a population of ejected planets would have a significantly different spatial and kinematic distribution to stars, and brown dwarfs that also formed through gravitational collapse and fragmentation. We therefore conclude that the low-mass substellar objects in NGC1333 formed more like stars than planets, although we predict that a population of hitherto undetected ejected planetary mass objects may be lurking in this, and other star-forming regions.
description: 11 pages, 8 figures, accepted for publication in MNRAS
The Challenges of Internal Revenue Generation and administration in The Ethiopian Public Higher Education Institutions: A Case Study of Addis Ababa University
Creators: name: Tadesse, Arefine
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: The public higher education in Ethiopia is increasing from few reached to thirty four. At the same time students enrollment has increased dramatically. The higher education in Ethiopia has mission to do teaching, research and community service. To execute their mission the federal government is allocate budget. However, government could not cover the budget needed to accomplish their entire mission. As a result the public higher education expected to generate internal revenue to cover up at least some of their budget needed. The public higher education has to be supplemented their budget by their internal revenue generated. However, the public higher education internal revenue generation is not diversified sufficiently and significantly except continuing education. In this study the challenges of internal revenue generation and administration in the public higher education in the case of AAU has analyzed. The study employed a case study with mixed research design to triangulate the result of the analysis from different source of the data. A secondary data of ten years continuing education student's enrollment and the revenue generated from Book Center gathered from AAU register, office of Book Center and different payment rates collected from CDE office. While the remaining source of internal revenue such as constancy, training, workshop, restaurant, café and printing press a two years internal revenue data collected from the office of internal revenue generation and diversification. Moreover, a primary data through questionnaire, interview and FGD has been collected from employees and students. Accordingly, the study used the cost and benefits analysis to analyze secondary data and used SPSS software to analyze primary data. Based on the above method of data collection and data analysis result is obtained and reported accordingly. According to the result obtained the major source of internal revenue generation in AAU is continuing education particularly the college of Business and economics and Institutes of Technology are generating more revenue than any other colleges and Institutions. While the remaining sources of internal revenue generation in AAU is not significantly generated compared with the continuing education. Moreover, AAU internal revenue generation and administration in AAU has a number of challenges. Weak revenue collection and utilization practices, the internal revenue sources administration is marginalized with the regular program. As a result they lack attention to facilitate their financial, human and general service matters.
A Hard Ionizing Spectrum in z=3-4 Ly-alpha Emitters with Intense [OIII] Emission: Analogs of Galaxies in the Reionization Era?
Creators: name: Nakajima, Kimihiko
name: Ellis, Richard S.
name: Iwata, Ikuru
name: Inoue, Akio K.
name: Kusakabe, Haruka
name: Ouchi, Masami
name: Robertson, Brant E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present Keck/MOSFIRE spectra of the diagnostic nebular emission lines [OIII]5007,4959, [OII]3727, and H-beta for a sample of 15 redshift z=3.1-3.7 Ly-alpha emitters (LAEs) and Lyman break galaxies (LBGs). In conjunction with spectra from other surveys, we confirm earlier indications that LAEs have a much higher [OIII]/[OII] line ratio than is seen in similar redshift LBGs. By comparing their distributions on a [OIII]/[OII] versus R23 diagram, we demonstrate that this difference cannot arise solely because of their lower metallicities but most likely is due to a harder ionizing spectrum. Using measures of H-beta and recombination theory, we demonstrate, for a subset of our LAEs, that xi_ion - the number of Lyman continuum photons per UV luminosity - is indeed 0.2-0.5 dex larger than for typical LBGs at similar redshifts. Using photoionization models we estimate the effect this would have on both [OIII]/[OII] and R23 and conclude such a hard spectrum can only partially explain such intense line emission. The additional possibility is that such a large [OIII]/[OII] ratio is in part due to density rather than ionization bound nebular regions, which would imply a high escape fraction of ionizing photons. We discuss how further observations could confirm this possibility. Clearly LAEs with intense [OIII] emission represent a promising analog of those z>7 sources with similarly strong lines which are thought to be an important contributor to cosmic reionization.
description: 7 pages, 4 figures. Accepted for publication in ApJ Letters
Sub-m s$^{-1}$ upper limits from a deep HARPS-N radial-velocity search for planets orbiting HD 166620 and HD 144579
Creators: name: John, Ancy Anna
name: Cameron, Andrew Collier
name: Faria, João P.
name: Mortier, Annelies
name: Wilson, Thomas G.
name: team, HARPS-N
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Minimising the impact of stellar variability in Radial Velocity (RV) measurements is a critical challenge in achieving the 10 cm s$^{-1}$ precision needed to hunt for Earth twins. Since 2012, a dedicated programme has been underway with HARPS-N, to conduct a blind RV Rocky Planets Search (RPS) around bright stars in the Northern Hemisphere. Here we describe the results of a comprehensive search for planetary systems in two RPS targets, HD 166620 and HD 144579. Using wavelength-domain line-profile decorrelation vectors to mitigate the stellar activity and performing a deep search for planetary reflex motions using a trans-dimensional nested sampler, we found no significant planetary signals in the data sets of either of the stars. We validated the results via data-splitting and injection recovery tests. Additionally, we obtained the 95th percentile detection limits on the HARPS-N RVs. We found that the likelihood of finding a low-mass planet increases noticeably across a wide period range when the inherent stellar variability is corrected for using scalpels U-vectors. We are able to detect planet signals with $M\sin i \leq 1$ M$_\oplus$ for orbital periods shorter than 10 days. We demonstrate that with our decorrelation technique, we are able to detect signals as low as 54 cm s$^{-1}$, which brings us closer to the calibration limit of 50 cm s$^{-1}$ demonstrated by HARPS-N. Therefore, we show that we can push down towards the RV precision required to find Earth analogues using high-precision radial velocity data with novel data-analysis techniques.
description: 7 tables, 24 figures (including those in appendix)
title: Экономическая безопасность: государство и регион
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2022

description: В учебнике раскрываются основы анализа и управления экономической безопасностью двух уровней: государства и регионов Российской Федерации; опасности и угрозы ее обеспечения. Автор рассматривает стратегические и нормативные правовые документы, регулирующие вопросы национальной и региональной безопасности, а также системы ее показателей, подходы, пороговые значения, практические методы оценки, механизмы обеспечения безопасности. Издание представляет собой учебный комплекс, включающий как теоретический курс, так и материалы для самостоятельной работы. Соответствует актуальным требованиям Федерального государственного образовательного стандарта высшего образования. Предназначен для студентов, обучающихся по укрупненной группе специальностей и направлений подготовки 38.00.00 «Экономика и управление», изучающих дисциплину «Экономическая безопасность», а также будет полезен для работников системы экономической безопасности, правоохранительных органов, органов и подразделений финансового мониторинга и других лиц, заинтересованных в комплексном обеспечении экономической безопасности.
Study on the Formability & Shape Confirmity of Mg & Al-alloy sheets in Warm condition by Electromagnetic Forming
Creators: name: Date, P.P.
name: Singhal, M.
Publisher: name: Technische Universität Dortmund
Year: 2012
Subjects: subject: failure criteria
subject: shape conformity
subject: warm electromagnetic forming
subject: 620
subject: 670

description: Electromagnetic forming is a high strain rate process used for shaping metals. Mg-alloys are of interest by virtue of the light weight and potential for application in automotive industries. These alloys have poor formability at room temperature and have to be formed under warm working conditions. Simulations using COMSOL Multiphysics software were carried out to predict the forming behavior of Mg-alloy sheets deformed at high speeds and different temperatures into a die with a corrugated shape. Conformance of the sheet to the die shape is the objective of this study. These sheets are assumed to be externally heated to different temperatures prior to forming. Possible changes in the mechanical and electrical properties of the material with temperature have been incorporated to show their individual and combined effects. A virtual circuit was built to excite the coil, fully coupled with the Solid Mechanics & Magnetic Fields, through related physics in the software. Optimal parameters that ensure good conformance to die shape are sought as the outcome of the simulation of warm electromagnetic forming of magnesium & aluminium alloy sheets. The quality of strain distribution under different clamping constraints was assessed using the strain non-uniformity index (SNI).
A study on the influence of silanized clay on the barrier, hydrophobic and mechanical properties of epoxy coated steel in natural seawater
Creators: name: Xavier, Joseph Raj
name: J, Raja Beryl
name: N, Ravisankar
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Space Science
classificationCode: 29999
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Biotechnology
classificationCode: 59999
subject: Environmental Sciences not elsewhere classified
classificationCode: 39999
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
classificationCode: 20199
subject: Astronomical and Space Sciences not elsewhere classified
classificationCode: 69999
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Plant Biology

description: Diethoxy(3-glycidyloxypropyl) methylsilane (GPMS), a surface modification agent, is used to give halloysite nanoparticles a hydrophobic behaviour and improve their ability to disperse in epoxy polymers (EP). Surface roughness and hydrophobicity (WCA: 144°) are both quite high in EP-GPMS/Clay coatings. The corrosion behavior of coated steel surfaces was investigated using electrochemical methods. The EP-GPMS/clay nanocomposite coating was shown to have about 63 times higher coating resistance than the EP coating. The EP-GPMS/Clay displayed better coating resistance (6687.71 kΩ.cm2) and a lower corrosion current density (4.25 μA/cm2) than plain epoxy (1.01 kΩ.cm2; 287.21 μA/cm2) even after prolonged exposure to the electrolyte, according to electrochemical studies. Compared to the pure EP (0.0599 mm/year), the EP-GPMS/clay coated sample had the lowest corrosion rate (0.0017 mm/year). According to SECM data, at 15 d of immersion, the Fe dissipation at the surface of the EP-GPMS/Clay coating (2.6 nA) is much smaller than the plain EP (14.7 nA). Additionally, the EP-GPMS/Clay showed enhanced adhesive properties. The EP with silanized clay offers an outstanding oxygen and water repellent, hydrophobic, and barrier properties. Due to the environmental safety of clay/silane, this kind of coating might be employed as a workable coating substance for industrial applications.
Testing the Large-Scale Environments of Cool-core and Noncool-core Clusters with Clustering Bias
Creators: name: Medezinski, Elinor
name: Battaglia, Nicholas
name: Coupon, Jean
name: Cen, Renyue
name: Gaspari, Massimo
name: Strauss, Michael A.
name: Spergel, David N.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: There are well-observed differences between cool-core (CC) and non-cool-core (NCC) clusters, but the origin of this distinction is still largely unknown. Competing theories can be divided into internal (inside-out), in which internal physical processes transform or maintain the NCC phase, and external (outside-in), in which the cluster type is determined by its initial conditions, which in turn lead to different formation histories (i.e., assembly bias). We propose a new method that uses the relative assembly bias of CC to NCC clusters, as determined via the two-point cluster-galaxy cross-correlation function (CCF), to test whether formation history plays a role in determining their nature. We apply our method to 48 ACCEPT clusters, which have well resolved central entropies, and cross-correlate with the SDSS-III/BOSS LOWZ galaxy catalog. We find that the relative bias of NCC over CC clusters is $b = 1.42 \pm 0.35$ ($1.6σ$ different from unity). Our measurement is limited by the small number of clusters with core entropy information within the BOSS footprint, 14 CC and 34 NCC. Future compilations of X-ray cluster samples, combined with deep all-sky redshift surveys, will be able to better constrain the relative assembly bias of CC and NCC clusters and determine the origin of the bimodality.
description: 8 pages, 7 figures, replaced with ApJ published version; figure added to address referee's comments
title: What kinds of cultural and educational transition do Chinese students experience, as they study for a twelve-month M.Sc. programme in the UK?
Creators: name: Johnson, Jennifer
Publisher: name: University of Liverpool Repository
Year: 2025

description: The trend of the massification of UK Higher Education (HE) during the past two decades in particular has been established. The specific growth in the international student population, as part of this process, has led to a high influx of overseas students, with the predominant sending nation being China. It is important to research the experiences of individual Chinese students on a 12-month taught Master’s programme, as prior literature had largely focused on Undergraduate and MBA students. Furthermore, the educational immersion of Chinese students in a one-year Master’s course has specific cultural and educational ramifications, which warrant further research. The cross-sectional nature of this study enables student voices to be heard at key junctures over time and for their individual transitions to be analysed. The specific contribution of this research is the creation of a synthesis to represent the particular experiences of Chinese Master’s students, using the theoretical frame of Goffman.
title: Novel Conjugates of Porphyrins and Peptides as Light-Responsive Molecules and Materials
Creators: name: Dognini, P
Publisher: name: Liverpool John Moores University
Year: 2024

description: The conjugation of biological molecules with functional small molecules is a common strategy in medicinal and biological chemistry to obtain compounds with improved properties and additional functionalities.In this work, the conjugation of peptides and porphyrins was studied. The thiol-fluoride Nucleophilic Aromatic Substitution (SNAr) was selected as conjugation tool because cysteine can be naturally present or easily introduced in peptide sequences, whilst meso- derivatised porphyrins with polyfluorinated rings are synthetically accessible. Initially, in Chapter 2, the reaction was optimised using N-acetyl cysteine and hexafluorobenzene as a model scaffold. Different reaction conditions were also explored on model peptides, and their compatibility with the starting reagents was tested. Two new base/solvent combinations for peptide stapling on hexafluorobenzene were identified and one of these proved to be a robust bioconjugation tool for peptides and porphyrins as well. Subsequently, in Chapter 3, bolaamphiphilic peptides with self-assembling behaviour were designed to include a cysteine and allow porphyrin coupling. When combined, porphyrin and self-assembling peptides can give origin to supramolecular systems with regular morphology and ordered arrangement that enhance the photochemical properties of embedded chromophores. The bola-porphyrin conjugates formed supramolecular structures under different conditions of concentration, pH, temperature, ionic strength, and time. Finally, in Chapter 4, it was observed that fully unprotected peptides containing two or more cysteines can cyclise by reacting twice or further with the same porphyrin. Besides the advantages of constrained peptides over their linear counterparts, the integration of a functional scaffold within the cyclic architecture is a step forward for the development of novel multifunctional molecules. This technique provided controlled access to cyclic, bicyclic, and tricyclic peptide systems that could be used as mimics of natural machineries, molecular probes, light-activated drugs, and biomarker detection tools. In conclusion, mastery of a novel bioconjugation strategy for peptides and porphyrins was demonstrated. The reaction occurs in solution with unprotected peptides and using peptide-compatible conditions, but can also be performed on-resin under specific circumstances. This indicates chemoselectivity, robustness and wide applicability. Exploiting this synthetic approach, light-responsive soft materials were obtained from the self-assembly of porphyrin and bolaamphiphilic peptides and polyfluorinated were introduced porphyrin as a versatile scaffold for the cyclisation of bioactive peptides.
An electromagnetically driven metalworking press
Creators: name: Boos, K.N.
name: Daehn, G.S.
name: Kabert, B.A.
name: Slone, C.E.
name: Taber, G.A.
name: Washburn, A.T.
name: Windholtz, T.N.
Publisher: name: Technische Universität Dortmund
Year: 2012
Subjects: subject: forming
subject: manufacturing
subject: powder
subject: 620
subject: 670

description: A small press operated by electromagnetic repulsion and driven by a pulse power supply was constructed at The Ohio State University. This design that applies kinetic energy rather than static force to do work on materials is much lighter and potentially much less expensive than traditional hydraulic, mechanical or servo presses. Performance of the kinetic press is compared to traditional presses in the applications of powder compaction and forming. The results tend to indicate that modest impact speeds of 3 to 18 m/s can improve performance in these manufacturing operations as compared to traditional low-speed machines.
Patient-reported enablement after consultation with advanced nurse practitioners: A cross-sectional study
Creators: name: McConkey, Robert
name: Murphy, Louise
name: Kelly, Therese
name: Dalton, Rachael
name: Rooney, Geraldine
name: Coy, Donna
name: Healy, Michelle
name: Meeker, Melinda
name: O’Loughlin, Marie
name: Dowling, Maura
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences

description: Patient enablement is an outcome of importance to advanced nurse practitioners (ANPs) and an indication of patients’ perceptions of their ability, confidence, and empowerment in managing their health care needs. Using a patient-reported experience measure (PREM), the Patient Enablement and Satisfaction Survey-Advanced Nurse Practitioner measure, this cross-sectional study found that consultation with an ANP in a urology outpatient/ambulatory care setting resulted in a high-level patient enablement. Moreover, content analysis of qualitative data provided by patients in response to an open question revealed experiences of patient-centered and empowerment-focused care following consultation with an ANP in urology