cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
1102: Pte Albert and Beatrice Stokes (photographs; bracelet; poem)
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: Albert Stokes of New Street in Stourport-on-Severn, married Beatrice Tovey in the autumn of 1916. During his time with the Royal Engineers, he made a bracelet of uniform buttons for his wife and she wrote a number of heart-felt poems to him. Alfred, who served throughout the First World War, was gassed and suffered shrapnel injuries, some of which remained under his skin. He never talked of his wartime experiences and refused to watch any war films. Three of his four brothers also served during the First World War, all surviving the conflict.
title: Essays on information economics under ambiguity
Creators: name: Le, Hoang-Vu
Publisher: name: University of Glasgow
Year: 2025

description: This thesis consists of three chapters, each examining the impact of ambiguity on a specific economic problem.

Chapter 1, Competitive Insurance Market Under Ambiguity, extends the classic Stiglitz and Rothschild model to a setting where insurers face ambiguity about the composition of their customers. Using the epsilon-contamination framework, I characterize insurance contracts in a screening game under ambiguity, considering two scenarios: pooling equilibrium and separating equilibrium. Additionally, I provide a criterion that guarantees the existence of a separating equilibrium under ambiguity—an outcome not observed in the standard no-ambiguity model.

Chapter 2, Moral Hazard Under Ambiguity, examines the principal-agent problem in which both the principal and the agent face ambiguity about the stochastic relationship between the agent’s effort and the project outcome. The chapter explores the optimal contract when effort is observable and the sub-optimal contract when effort is unobservable, within the context of ambiguity aversion. I specify conditions under which the principal’s decision to induce high or low effort under ambiguity aligns with the decision in the absence of ambiguity.

Chapter 3, Cheap Talk With Ambiguous Beliefs, explores the cheap talk problem in the spirit of Crawford-Sobel (CS), introducing ambiguity by relaxing the assumption that both the sender and receiver know the actual distribution of the private message. The chapter examines CS-like partition equilibria in cases of small, complete, and intermediate ambiguity, using various frameworks to model ambiguity. It offers new insights into how ambiguity influences agents’ behavior in strategic communication games.
Standard model atmospheres for A-type stars and non-LTE effects
Creators: name: Kubat, Jiri
name: Korcakova, Daniela
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The current status of NLTE model atmosphere calculations of A type stars is reviewed. During the last decade the research has concentrated on solving the restricted NLTE line formation problem for trace elements assuming LTE model atmospheres. There is a general lack of calculated NLTE line blanketed model atmospheres for A type stars, despite the availability of powerful methods and computer codes that are able to solve this task. Some directions for future model atmosphere research are suggested.
description: to appear in The A Star Puzzle, IAU Symp. 224, J. Zverko, W. W. Weiss, J. Ziznovsky & S. J. Adelman eds., Cambridge Univ. Press
Participatory Impact Pathways Analysis: A practical method for project planning and evaluation
Creators: name: Douthwaite, Boru
name: Alvarez, Sophie
name: Thiele, Graham
name: Mackay, Ronald
name: Douthwaite, Boru
name: Alvarez, Sophie
name: Thiele, Graham
name: Mackay, Ronald
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural and Food Policy
subject: Research and Development/Tech Change/Emerging Technologies
subject: PIPA
subject: Impact pathway
subject: PME
subject: evaluation
subject: framework
subject: tool
subject: planning

description: Participatory Impact Pathways Analysis (PIPA) is a practical planning, and monitoring and evaluation approach developed for use with complex projects in the water and food sectors . PIPA begins with a participatory workshop where stakeholders make explicit their assumptions about how their project will achieve an impact. Participants construct problem trees, carry out a visioning exercise and draw network maps to help them clarify their 'impact pathways'. These are then articulated in two logic models. The outcomes logic model describes the project's medium term objectives in the form of hypotheses: which actors need to change, what are those changes and which strategies are needed to realise these changes. The impact logic model describes how, by helping to achieve the expected outcomes, the project will impact on people's livelihoods. Participants derive outcome targets and milestones which are regularly revisited and revised as part of project monitoring and evaluation (M&E). PIPA goes beyond the traditional use of logic models and logframes by engaging stakeholders in a structured participatory process, promoting learning and providing a framework for 'action research' on processes of change.
Dense Registration and Mosaicking of Fingerprints by Training an End-to-End Network
Creators: name: Cui, Zhe
name: Feng, Jianjiang
name: Zhou, Jie
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Dense registration of fingerprints is a challenging task due to elastic skin distortion, low image quality, and self-similarity of ridge pattern. To overcome the limitation of handcraft features, we propose to train an end-to-end network to directly output pixel-wise displacement field between two fingerprints. The proposed network includes a siamese network for feature embedding, and a following encoder-decoder network for regressing displacement field. By applying displacement fields reliably estimated by tracing high quality fingerprint videos to challenging fingerprints, we synthesize a large number of training fingerprint pairs with ground truth displacement fields. In addition, based on the proposed registration algorithm, we propose a fingerprint mosaicking method based on optimal seam selection. Registration and matching experiments on FVC2004 databases, Tsinghua Distorted Fingerprint (TDF) database, and NIST SD27 latent fingerprint database show that our registration method outperforms previous dense registration methods in accuracy and efficiency. Mosaicking experiment on FVC2004 DB1 demonstrates that the proposed algorithm produced higher quality fingerprints than other algorithms which also validates the performance of our registration algorithm.
Enriching Impact Assessment at CIMMYT
Creators: name: La Rovere, Roberto
name: Dixon, John
name: Hellin, Jonathan
name: La Rovere, Roberto
name: Dixon, John
name: Hellin, Jonathan
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural and Food Policy
subject: Research and Development/Tech Change/Emerging Technologies
subject: impact
subject: Assessment
subject: CIMMYT
subject: ILAC
subject: CGIAR

description: The International Center for Maize and Wheat Improvement (CIMMYT) is a CGIAR centre with a long tradition of impact assessment (IA). Until recently, such work had focused on the rates of adoption of improved germplasm and returns on investment. Limited attention was directed at measuring impacts in terms of livelihood security or poverty reduction. In 2005, therefore, CIMMYT's Impacts Targeting and Assessment Unit (ITAU) began to develop and promote more wide-ranging types of IA. In order to enhance its IA culture and institutionalize IA within the Center, ITAU organized a series of workshops that brought together different players amongst CIMMYT's staff and partners. Coupled with follow-up activities, these have made it possible for social and biophysical scientists and other partners to share their understanding of IA and their IA experiences. This brief describes the key elements of the process that led to the establishment of a learning platform for a CIMMYT-wide IA culture, as well as ways to consolidate achievements and progress on institutionalizing IA. It also states the lessons learned with regard to institutionalizing IA within the context of an international agricultural research centre.
Correlations of Structure and Dynamics in an Aging Colloidal Glass
Creators: name: Cianci, Gianguido C.
name: Courtland, Rachel E.
name: Weeks, Eric R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study concentrated colloidal suspensions, a model system which has a glass transition. Samples in the glassy state show aging, in that the motion of the colloidal particles slows as the sample ages from an initial state. We study the relationship between the static structure and the slowing dynamics, using confocal microscopy to follow the three-dimensional motion of the particles. The structure is quantified by considering tetrahedra formed by quadruplets of neighboring particles. We find that while the sample clearly slows down during aging, the static properties as measured by tetrahedral quantities do not vary. However, a weak correlation between tetrahedron shape and mobility is observed, suggesting that the structure facilitates the motion responsible for the sample aging.
description: Submitted to Solid State Communications
A new DSP controlled bi-directional DC/DC converter system for inverter/charger applications
Creators: name: Swingler, Andrew Duncan
Publisher: name: University of British Columbia
Year: 2009

description: As prices fall and performance increases DSP controllers are becoming increasingly attractive for use within switch mode power supply applications. However, due to the relative infancy of the technology questions remain concerning the practical implementation of DSP controlled power converters. This work is concerned with the application of current DSP hardware technology within a novel power electronic voltage converter system for combination inverter/chargers. Power circuit design, dynamic modeling, digital control and large signal computer simulation of a select 12:200 Volt, 400 Watt bi-directional dc/dc battery charge/discharge power-circuit are considered. Initially, a novel DSP interfaced bi-directional dc/dc power circuit for the selected inverter/charger application is proposed. The proposed power-circuit is novel in its seamless two-quadrant bilateral charge/discharge operation based on a single duty cycle control input and fixed pattern DSP derived synchronously rectified PWM switching. A prototype power-circuit is designed and evaluated experimentally with various semiconductor switch technologies. Ultimately the proposed concept is successfully proven using a combination of FET and IGBT high speed switching devices. To control the power-circuit a tri-mode digital control system is further developed to regulate the power-circuit in three modes of operation: bus voltage regulation, constant current charge regulation and constant battery voltage charge regulation. Small-signal plant models are derived from the non-linear power-circuit using a novel combination of state-space averaging and MATLAB analysis. To facilitate closed loop feedback controller design digitized both proportional integral (PI) and pure integral (I) feedback control compensators are derived using "worst-case operating point" plant models and frequency domain stability analysis. The pure I controller technique is ultimately adopted due to its proven performance and implementation ease as compared to the PI controller designs. To verify conceptually the system operation a novel MATLAB/SIMULINK based simulation method is developed to model the transient large signal behavior of the nonlinear power-circuit. This reliable simulation tool is shown to model the numerical effects of the DSP, confirm closed loop stability to large-signal changes in operating point and generally verify successful operation of the proposed tri-mode control approach. Finally, a prototype converter under closed loop DSP control is evaluated experimentally and its performance compared to the predicted results.
Buckling of thermalized elastic sheets
Creators: name: Morshedifard, Ali
name: Ruiz-Garcia, Miguel
name: Qomi, Mohammad Javad Abdolhosseini
name: Kosmrlj, Andrej
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Steady progress in the miniaturization of structures and devices has reached a scale where thermal fluctuations become relevant and it is thus important to understand how such fluctuations affect their mechanical stability. Here, we investigate the buckling of thermalized sheets and we demonstrate that thermal fluctuations increase the critical buckling load due to the enhanced scale-dependent bending rigidity for sheets that are much larger than a characteristic thermal length scale. The presented results are universal and apply to a wide range of microscopic sheets. These results are especially relevant for atomically thin 2D materials, where thermal fluctuations can significantly increase the critical buckling load because the thermal length scale is on the order of nanometers at room temperature.
description: 10 pages, 4 figures
Participatory decision-making: The core of multi-stakeholder collaboration
Creators: name: Kaner, Sam
name: Watts, Jamie
name: Frison, Emile
name: Kaner, Sam
name: Watts, Jamie
name: Frison, Emile
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural and Food Policy
subject: Research and Development/Tech Change/Emerging Technologies
subject: Decision-making
subject: facilitation
subject: participation
subject: collaboration
subject: stakeholder

description: The purpose of this brief is to provide insights and guiding principles that can inspire readers to conduct multistakeholder collaboration more effectively. The objectives are to demystify the process of collaboration, to make its assumptions more accessible, and especially to encourage readers to adapt participatory values and practices to their own settings. The brief describes several time-tested tools and procedures that can be implemented in a straightforward manner.
Effects of Proprietary Hepatoprotective Additives (CadlivTM liq.) Supplementation on the Growth Performance and Hepatic Histological Architecture of Commercial Broiler Chickens
Creators: name: Ray, Susim Mukul
name: Achintya Banik
name: Bhagat, Ganesh
Publisher: name: figshare
Year: 2020
Subjects: subject: 70204 Animal Nutrition
subject: FOS: Animal and dairy science
subject: 70202 Animal Growth and Development

description: The effects of proprietary hepatoprotective additives supplementation (CadlivTM liq., CDLV)on the growth performance and hepatic histological architecture of broiler chickens were evaluated through a field experiment which lasted for 29 days involving 3016 mixed sex flock of Vencobb chickens. The chicks having an initial mean body weight (BW) of 42.5±0.5 g were randomly housed into two groups (n = 1508 chicks/group) and were fed with a basal diet (negative control, NC) and the basal diet supplemented with CDLV via drinking water at 0.1 mL bird􏰈1 day􏰈1 for three days a week during 1-29 day. Growth performance viz. BW, average daily body weight gain (ADG) and feed conversion ratio (FCR) were recorded weekly and histopathological scoring of livers (n = 10 birds/group) were done before slaughtering on the 29th day. CDLV supplementation significantly improved (p ≤ 0.01) BW, ADG and FCR in experimental broiler chickens as compared to the NC group. These findings were corroborated by the data on histology of liver where CDLV supplementation in broiler chickens significantly improved (p = 0.024) histopathological scores as compared to the NC group. Data on the farm production economics indicated that CDLV supplementation in broiler chickens resulted in savings of 0.91 INR per kg BW due to significant improvement (p 􏰉≤ 􏰉0.01) in growth performance. The combined supplementation of hepatoprotective additives (CDLV) significantly improved the growth performance by exerting substantial beneficial effects on the hepatic histological architecture of commercial broiler chickens.
Consistency Conditions for $p$-Form Fields Localization on Codimension two Braneworlds
Creators: name: Freitas, L. F. F.
name: Alencar, G.
name: Landim, R. R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently, in (Eur.Phys.J.C 80 (2020) 5, 432), the present authors obtained general stringent conditions on the localization of fields in braneworlds by imposing that its zero-mode must satisfy Einstein's equations (EE). Here, we continue this study by considering free $p$-form. These fields present an on-shell equivalency relation between a $p$-form and a $(D-p-2)$-form, provided by Hodge duality (HD). This symmetry will impose a new consistency condition, namely, confinement of a $p$-form must imply the localization of its dual. We apply the above conditions to $6$D braneworlds. With this, we find that in global string-like defects, for example, the $1$-form has a normalizable zero-mode. By using the HD, we show that its bulk dual $3$-form also has a normalizable zero-mode, making the confinement consistent with HD. However, these solutions cannot be made consistent with EE, therefore, these fields must be ruled out. In fact, by imposing both conditions, only the scalar and its dual field can be consistently localized. In this way, all the literature so far in which the free $1$-form is localized in codimension two models should be reviewed. These results also point to the fact that the symmetries of the fields can be used to verify the consistency of their localization and even prohibit it.
description: 39 pages and 2 figures. Final version
Building an evaluative culture for effective evaluation and results management
Creators: name: Mayne, John
name: Mayne, John
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural and Food Policy
subject: Research and Development/Tech Change/Emerging Technologies
subject: evaluation
subject: culture
subject: evaluative

description: A weak evaluative culture undermines many attempts at building an effective evaluation and results management regime. This brief outlines practical actions that an organization can take to build and support an evaluative culture, where information on performance is deliberately sought in order to learn how to better manage and deliver programmes and services. Such an organization values empirical evidence on the results it is seeking to achieve.
Injected power and entropy flow in a heated granular gas
Creators: name: Visco, P.
name: Puglisi, A.
name: Barrat, A.
name: Trizac, E.
name: van Wijland, F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Our interest goes to the power injected in a heated granular gas and to the possibility to interpret it in terms of entropy flow. We numerically determine the distribution of the injected power by means of Monte-Carlo simulations. Then, we provide a kinetic theory approach to the computation of such a distribution function. Finally, after showing why the injected power does not satisfy a Fluctuation Relation a la Gallavotti-Cohen, we put forward a new quantity which does fulfill such a relation, and is not only applicable in a variety of frameworks outside the granular world, but also experimentally accessible.
description: accepted in Europhys. Lett
1093: James Edmund Smith Condon (Military Cross; photograph)
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: This medal was awarded to my great uncle for his bravery during WW1 whilst serving with the Royal Irish Regiment. He was fortunate and survived the war.
f-symbols in Robertson-Walker space-times
Creators: name: Popa, Florian Catalin
name: Tintareanu-Mircea, Ovidiu
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In a Robertson-Walker space-time a spinning particle model is investigated and we show that in a stationary case, there exists a class of new structures called f-symbols which can generate reducible Killing tensors and supersymmetry algebras.
description: 10 pages
X-ray/Optical/Radio Observations of a Resolved Supernova Remnant in NGC 6822
Creators: name: Kong, A. K. H.
name: Sjouwerman, L. O.
name: Williams, B. F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The supernova remnant (SNR), Ho 12, in the center of the dwarf irregular galaxy NGC 6822 was previously observed at X-ray, optical, and radio wavelengths. By using archival Chandra and ground-based optical data, we found that the SNR is spatially resolved in X-rays and optical. In addition, we obtained a ~5" resolution radio image of the SNR. These observations provide the highest spatial resolution imaging of an X-ray/optical/radio SNR in that galaxy to date. The multi-wavelength morphology, X-ray spectrum and variability, and narrow-band optical imagings are consistent with a SNR. The SNR is a shell-shaped object with a diameter of about 10" (24 pc). The morphology of the SNR is consistent across the wavelengths while the Chandra spectrum can be well fitted with a nonequilibrium ionization model with an electron temperature of 2.8 keV and a 0.3-7 keV luminosity of 1.6e37 erg/s. The age of the SNR is estimated to be 1700-5800 years.
description: 6 pages, 3 figures, accepted for publication in the Astronomical Journal
Symbolic Computation in the Calculus of Variations: Determination of Symmetries and Conservation Laws (in Portuguese)
Creators: name: Gouveia, Paulo D. F.
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 49-04, 49K05, 49S05

description: English version of abstract: The dynamic optimization problems treated by the calculus of variations are usually solved with the help of the 2nd order Euler-Lagrange differential equations. These equations are, generally speaking, nonlinear, and very hard to solve. One way to address the problem is to obtain conservation laws of lower order than those of the corresponding Euler-Lagrange equations. While in Physics and Economics the question of existence of conservation laws is treated in a rather natural way, because the application itself suggest the conservation laws (e.g., conservation of energy, income/health law), from a strictly mathematical point of view, given a problem of the calculus of variations, it is not obvious how one might derive a conservation law or, for that matter, if it even has a conservation law. The question we address is thus to develop computational facilities, based on a systematic method, which permits to identify functionals that have conservation laws. The central result we use is the celebrated Noether's theorem. This theorem links conservation laws with the invariance properties of the problem (with symmetries), and provides an algorithm for finding conservation laws. Thus the problem is reduced to the one of finding the variational symmetries. We show how a Computer Algebra System can help to find the symmetries and the conservation laws in the calculus of variations. Several illustrative examples are given.
description: 20 pages, in Portuguese. Partially presented at XXVII CNMAC (Brazilian Congress of Applied Mathematics and Computation), FAMAT/PUCRS, Porto Alegre, RS, Brasil, 13-16 September 2004. Supported by the program PRODEP III/5.3/2003 and the R&D unit CEOC of the University of Aveiro
COVID-19Base: A knowledgebase to explore biomedical entities related to COVID-19
Creators: name: Khan, Junaed Younus
name: Khondaker, Md. Tawkat Islam
name: Hoque, Iram Tazim
name: Al-Absi, Hamada
name: Rahman, Mohammad Saifur
name: Alam, Tanvir
name: Rahman, M. Sohel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Retrieval (cs.IR)
subject: Computation and Language (cs.CL)
subject: Digital Libraries (cs.DL)
subject: Machine Learning (cs.LG)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: We are presenting COVID-19Base, a knowledgebase highlighting the biomedical entities related to COVID-19 disease based on literature mining. To develop COVID-19Base, we mine the information from publicly available scientific literature and related public resources. We considered seven topic-specific dictionaries, including human genes, human miRNAs, human lncRNAs, diseases, Protein Databank, drugs, and drug side effects, are integrated to mine all scientific evidence related to COVID-19. We have employed an automated literature mining and labeling system through a novel approach to measure the effectiveness of drugs against diseases based on natural language processing, sentiment analysis, and deep learning. To the best of our knowledge, this is the first knowledgebase dedicated to COVID-19, which integrates such large variety of related biomedical entities through literature mining. Proper investigation of the mined biomedical entities along with the identified interactions among those, reported in COVID-19Base, would help the research community to discover possible ways for the therapeutic treatment of COVID-19.
description: 10 pages, 3 figures
SUQULIB KIRISHLARNI ANIQLASH TIZIMLARI
Creators: name: Islomov Dostonbek Uktamjon o'g'li Muhammad al-Xorazmiy nomidagi Toshkent axborot texnologiyalari universiteti Nurafshon filiali, Axborot texnologiyalari kafedrasi assistenti
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqolada suqulib kirishlarni aniqlash tizimlari, ularning vazifasi, arxitekturasi, turlari, ishlash funktsiyalari va ularning afzallik, kamchiliklari yoritib berilgan.

Kalit so‘zlar: Suqulib kirishlarni aniqlash tizimi, tarmoqqa asoslangan suqulib kirishlarni aniqlash tizimi, hostga asoslangan suqulib kirishlarni aniqlash tizimi.
Does Corporate Social Responsibility Affect the Performance of Firms?
Creators: name: Poddi, Laura
name: Vergalli, Sergio
name: Poddi, Laura
name: Vergalli, Sergio
Publisher: name: Unknown
Year: 2009
Subjects: subject: Institutional and Behavioral Economics
subject: Corporate Social Responsibility
subject: Growth

description: Over the last two decades in OECD countries increasingly more firms are certifying as Socially Responsible (CSR is the acronym for Corporate Social Responsibility). This kind of certification is assigned by private companies that guarantee that a certain firm’s behaviour is environmentally and sociologically correct. Some papers (including Preston and O’Bannon, 1997; Waddock and Graves, 1997; McWilliams and Sieger, 2001; Ullman, 1985) tried to establish if there exists a link between Social Responsibility certification and the performance of firms. Their results were ambiguous and did not show any common connection. This ambiguity depends mainly on the static nature of their analyses and on the problem of whether performance is affected more by certification costs or by increasing sales due to an effect on reputation. Our work would like to discover whether certain performance indicators are affected by a firm’s social responsible behaviour and their certifications by looking at panel data. The novelty of our analysis is due to its dynamic aspect and from a CSR index that intersects two of the three main international indices (Domini 400 Social Index, Dow Jones Sustainability World Index, FTSE4Good Index), to be objective and obtain a representative sample. The main results seem to support the idea that CSR firms which are more virtuous, have better long run performance. They have some initial costs but obtain higher sales and profits due to several causes reputation effect, a reduction of long run costs and increased social responsible demand.
Triggering the Formation of Halo Globular Clusters with Galaxy Outflows
Creators: name: Scannapieco, Evan
name: Weisheit, Jon
name: Harlow, Francis
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the interactions of high-redshift galaxy outflows with low-mass virialized (Tvir < 10,000K) clouds of primordial composition. While atomic cooling allows star formation in larger primordial objects, such "minihalos" are generally unable to form stars by themselves. However, the large population of high-redshift starburst galaxies may have induced widespread star formation in these objects, via shocks that caused intense cooling both through nonequilibrium H2 formation and metal-line emission. Using a simple analytic model, we show that the resulting star clusters naturally reproduce three key features of the observed population of halo globular clusters (GCs). First, the 10,000 K maximum virial temperature corresponds to the ~ 10^6 solar mass upper limit on the stellar mass of GCs. Secondly, the momentum imparted in such interactions is sufficient to strip the gas from its associated dark matter halo, explaining why GCs do not reside in dark matter potential wells. Finally, the mixing of ejected metals into the primordial gas is able to explain the ~ 0.1 dex homogeneity of stellar metallicities within a given GC, while at the same time allowing for a large spread in metallicity between different clusters. To study this possibility in detail, we use a simple 1D numerical model of turbulence transport to simulate mixing in cloud-outflow interactions. We find that as the shock shears across the side of the cloud, Kelvin-Helmholtz instabilities arise, which cause mixing of enriched material into > 20% of the cloud. Such estimates ignore the likely presence of large-scale vortices, however, which would further enhance turbulence generation. Thus quantitative mixing predictions must await more detailed numerical studies.
description: 21 pages, 11 figures, Apj in press
3630: Gunner George Briggs
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: George Briggs was born 1st December 1894 in Cookley near Kidderminster, Worcestershire. He enlisted in 1916 joining the Royal Field Artillery and later joined 'C' Battery of the 227th Brigade. Sadly, he was killed during the Spring Offensive on the 27th March 1918 in France on the Somme battlefields. With no known grave, George is commemorated on the walls of the Pozieres Memorial on the Somme in France. Despite not being a Roman Catholic, George carried a set of rosary beads which can be seen as part of this collection.
The Participatory Market Chain Approach: Stimulating pro-poor market-chain innovation
Creators: name: Bernet, Thomas
name: Devaux, Andre
name: Thiele, Graham
name: Lopez, Gaston
name: Velasco, Claudio
name: Manrique, Kurt
name: Ordinola, Miguel
name: Bernet, Thomas
name: Devaux, Andre
name: Thiele, Graham
name: Lopez, Gaston
name: Velasco, Claudio
name: Manrique, Kurt
name: Ordinola, Miguel
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Food Security and Poverty
subject: Research and Development/Tech Change/Emerging Technologies
subject: market
subject: chain
subject: approach
subject: Participatory
subject: PMCA

description: Innovation in the food and agriculture sector is frequently short-circuited by a lack of trust and communication between actors in the market chain. To overcome these problems and stimulate innovation, the Participatory Market Chain Approach (PMCA) brings together small farmers, market agents, and service providers for an intense process of facilitated interaction. The PMCA uses a flexible three-stage participatory process to improve communication, build trust, and facilitate collaboration among participants so that they can jointly identify, analyze, and exploit new market opportunities. The PMCA focuses on innovation in products, technologies, and ways of working together. By carefully selecting market chains and partners, and building in social responsibility, the PMCA can lead to favourable outcomes and impacts for poor farmers, typically the weakest link in the chain. The PMCA requires facilitation and technical support from professionals with good social skills, research experience, and marketing knowledge, based in a neutral research and development organization. To ensure that impacts are sustained, the PMCA is best used as part of a broader programme of market chain development.
An Approach to Explain the Long Cooling Times of Anomalous X-ray Pulsars and Soft Gamma Repeaters with the Neutrino Magnetic Moment
Creators: name: Yazgan, Efe
name: Zeyrek, Mehmet T.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The surface temperatures as well as X-ray luminosities of Anomalous X-ray Pulsars and Soft Gamma Repeaters are several times higher than that of the ordinary isolated neutron stars at similar ages. We present a simple approach to explain this observation by the effect of the neutrino magnetic moment on neutron star cooling. This requires a neutrino magnetic moment about $(3-5)\times10^{-11}μ_B$. The simple approach presented in this paper might be used in determining the exact value of the neutrino magnetic moment and its contribution to the neutrino-electron scattering when the models to explain Anomalous X-ray Pulsars and Soft Gamma Repeaters are mature enough.
description: 7 pages, 1 figure
Consumers switching to vegan diets_a systematic review_IAPNM 19th.pdf
Creators: name: Salehi, Gelareh
Publisher: name: figshare
Year: 2020
Subjects: subject: 130205 Humanities and Social Sciences Curriculum and Pedagogy (excl. Economics, Business and Management)
subject: FOS: Educational sciences

description: The omnivorous diets have several negative impacts on public health, environment sustainability and animal welfare. Switching to more responsible consumption choices such as vegan, vegetarian or plant-based (veg*an) are healthier, sustainable, and ethical dietary alternatives. There is a growing interest in studying veg*anism and veg*an diets. However, veg*anism continues being overlooked in research, especially within the domain of social-psychology and consumer behavior. Consequently, knowledge toward adhering veg*an diets remain very limited. This paper aims to review and synthesis the related literature on how consumers shift to and maintain veg*an diets. A systematic literature review is conducted through the following four phases: search strategy, exclusion criteria, inclusion criteria, and data extraction. Total of 33 papers were reviewed. Results of synthesized studies showed the process of switching to veg*an diets started by awareness, continued by attitude development, fueled by various motivations, and supported by social and physical factors. These factors could be assessed by more representative and larger samples of consumers in the future.
Utilization-focused evaluation for agricultural innovation
Creators: name: Patton, Michael Quinn
name: Horton, Douglas
name: Patton, Michael Quinn
name: Horton, Douglas
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural and Food Policy
subject: Research and Development/Tech Change/Emerging Technologies
subject: Research Methods/ Statistical Methods
subject: evaluation
subject: utilization
subject: UFE
subject: innovation

description: Utilization-focused evaluation (UFE) is based on the principle that an evaluation should be judged by its utility. So no matter how technically sound and methodologically elegant, an evaluation is not truly a good evaluation unless the findings are used. UFE is a framework for enhancing the likelihood that evaluation findings will be used and lessons will be learnt from the evaluation process. This Brief, based on the book Utilization-focused evaluation, introduces this approach to evaluation, outlines key steps in the evaluation process, identifies some of the main benefits of UFE, and provides two examples of UFE in the context of programmes aimed at promoting agricultural innovation.
THE ROLE OF RELAXIN AND MATRIX METALLOPROTEINASES IN PRETERM LABOR MECHANISMS
Creators: name: Narkulova, Soxiba
name: Abduraxmonova, Gulruy
Publisher: name: Zenodo
Year: 2025

description: This article explores the role of relaxin and matrix metalloproteinases (MMPs) in the mechanisms of preterm labor. The molecular mechanisms through which these molecules influence the structural changes in the uterine and cervical tissues, which are related to the onset of labor, are discussed. Special attention is given to the relationship between relaxin levels and MMP activity, as well as their role in preparing the female body for labor. The article also addresses modern approaches to the diagnosis and treatment of preterm labor based on the use of these molecules as biomarkers. The findings of this research open up new prospects for the development of effective methods for the prevention and treatment of preterm labor.
Multicomponent dark matter in noncommutative $B-L$ gauge theory
Creators: name: Nam, Cao H.
name: Van Loi, Duong
name: Thuy, Le Xuan
name: Van Dong, Phung
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is shown that for a higher weak isospin symmetry, $SU(P)_L$ with $P\geq 3$, the baryon minus lepton charge $B-L$ neither commutes nor closes algebraically with $SU(P)_L$ similar to the electric charge $Q$, which all lead to a $SU(3)_C\otimes SU(P)_L\otimes U(1)_X\otimes U(1)_N$ gauge completion, where $X$ and $N$ determine $Q$ and $B-L$, respectively. As a direct result, the neutrinos obtain appropriate masses via a canonical seesaw. While the version with $P=3$ supplies the schemes of single-component dark matter well established in the literature, we prove in this work that the models with $P\geq 4$ provide the novel scenarios of multicomponent dark matter, which contain simultaneously at least $P-2$ stable candidates, respectively. In this setup, the multicomponet dark matter is nontrivially unified with normal matter by gauge multiplets, and their stability is ensured by a residual gauge symmetry which is a remnant of the gauge symmetry after spontaneous symmetry breaking. The three versions with $P=4$ according to the new lepton electric charges are detailedly investigated. The mass spectrum of the scalar sector is diagonalized when the scale of the $U(1)_N$ breaking is much higher than that of the usual 3-4-1 symmetry breaking. All the interactions of gauge bosons with fermions and scalars are obtained. We figure out viable parameter regimes given that the multicomponent dark matter satisfies the Planck and (in)direct detection experiments.
description: 64 pages, revised version, published in JHEP
Planetary Nebulae as a Chemical Evolution Tool: Abundance Gradients
Creators: name: Maciel, W. J.
name: Lago, L. G.
name: Costa, R. D. D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have studied the time variation of the radial abundance gradients using samples of planetary nebulae, open clusters, cepheids and other young objects. Based on the analysis of O/H and S/H abundances for planetary nebulae and metallicities of the remaining objects, we concluded that the gradients have been flattening out in the last 8 Gyr with an average rate of the order of 0.005 - 0.010 dex/(kpc Gyr). We have estimated the errors involved in the determination of the gradients, and concluded that the existence of systematic abundance variations is more likely than a simple statistical dispersion around a mean value.
description: 4 pages, 1 figure, to appear in the proceedings of the conference "Planetary Nebulae as astronomical tools", Gdansk, Poland, jun 28/jul 02, 2005, ed. G. Stasinska, R. Szczerba (AIP Conference Proceedings)
ДАВЛАТ ХАРИДЛАРИНИНГ НАЗАРИЙ ТАҲЛИЛИ
Creators: name: Ғуломов Исломбек Икромжон ўғли Ўзбекистон Республикаси Банк Молия  Академияси магистранти
Publisher: name: Zenodo
Year: 2024

description: Давлат харидлари нафақат бизнинг мамлакатимизда балки хақаро миқиёсда жадал ривожланиб бораётган соҳадир. Шу сабабли бу тизим кўплаб олимлар, халқаро институтлар ва бошқалар томонидан билдирилган назарияларда, мақолаларда ва илмий ишларида муҳокама қилиниб келинмоқда. Соҳа қанчалик ривожлангани сари у ҳақида қарашлар, фикрлар ҳилма ҳиллиги ортиб боради. Бу эса ушбу соҳани давлат бошқарув тизимида муҳимлилик даражасини белгилаб беради
Horndeski theories and beyond from higher dimensions
Creators: name: Jana, Soumya
name: Dalang, Charles
name: Lombriser, Lucas
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Einstein-Hilbert action with a cosmological constant is the most general local four-dimensional action leading to second-order derivative equations of motion that are symmetric and divergence free. In higher dimensions, additional terms can appear. We investigate a generalised metric decomposition involving a scalar degree of freedom to express the higher-dimensional action as an effective four-dimensional scalar-tensor theory. From the higher-dimensional Ricci scalar alone and a subclass of our metric ansatz, we recover the subset of Horndeski theories with luminal speed of gravitational waves. More generally, beyond-Horndeski terms appear. When including a Gauss-Bonnet scalar in the higher-dimensional action, we generate contributions to all cubic-order second-derivative terms present in the degenerate higher-order scalar-tensor theory as well as higher-derivative terms beyond that. We discuss this technique as a way to generate healthy four-dimensional gravity theories with an extra scalar degree of freedom and outline further generalisations of our method.
description: 29 pages, published version
Max-Semi-Selfdecomposable Laws and Related Processes
Creators: name: Satheesh, S
name: Sandhya, E
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 60 E 07, 60 G 18, 60 G 70, 62 E 10, 62 M 10

description: Methods of construction of Max-semi-selfdecompsable laws are given. Implications of this method in random time changed extremal processes are discussed. Max-autoregressive model is introduced and characterized using the max-semi-selfdecompsable laws and exponential max-semi-stable laws. Max-semi-selfddecomposability of max-semi-stable laws are proved.
description: contents in section.4 changed, references updated
Optical clocks based on the Cf$^{15+}$ and Cf$^{17+}$ ions
Creators: name: Porsev, S. G.
name: Safronova, U. I.
name: Safronova, M. S.
name: Schmidt, P. O.
name: Bondarev, A. I.
name: Kozlov, M. G.
name: Tupitsyn, I. I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Recent experimental progress in cooling, trapping, and quantum logic spectroscopy of highly-charged ions (HCIs) made HCIs accessible for high resolution spectroscopy and precision fundamental studies. Based on these achievements, we explore a possibility to develop optical clocks using transitions between the ground and a low-lying excited state in the Cf$^{15+}$ and Cf$^{17+}$ ions. Using a high-accuracy relativistic method of calculation we predicted the wavelengths of clock transitions, calculated relevant atomic properties, and analyzed a number of systematic effects (such as the electric quadrupole-, micromotion-, and quadratic Zeeman shifts of the clock transitions) that affect the accuracy and stability of the optical clocks. We also calculated magnetic dipole hyperfine-structure constants of the clock states and the blackbody radiation shifts of the clock transitions.
description: 9 pages, 2 figures
Uranus's anomalously low excess heat constrains strongly interacting dark matter
Creators: name: Mitra, Saibal
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Dark matter annihilations can generate significant amounts of internal heat inside planets if dark matter consists mainly of particles with nuclear cross sections in the micro-barn range or larger (SIMPs). By considering a detailed model of Uranus's interior, we calculate upper limits on the S-wave annihilation cross section for these particles as a function of their mass. These upper limits, together with other experimental and theoretical constraints, rule out SIMPs with masses between 150 MeV and $10^{4}$ GeV.
description: 6 REVTeX pages, version accepted by PRD
Analysis of transformation of mammary epithelial cells by activated M-Ras
Creators: name: Ward, Katherine Rachel
Publisher: name: University of British Columbia
Year: 2009

description: The apparent absence of activating mutations within the p21 Ras genes in human breast cancer raised the possibility of involvement of other Ras family genes in this tumor type. It had been proposed that activating mutations in R-Ras2 (TC21) may have a role in breast tumors and work within the laboratory had identified elevated levels of R-Ras3 (M-Ras) in breast cancer cell-lines. To investigate this idea I expressed M-Ras in a functional murine mammary epithelial cell-line, scp2. Expression of activated mutants of M-Ras, but not wild type M-Ras, in scp2 cells resulted in epithelial to mesenchymal transition (EMT) and oncogenic transformation. Cells expressing constitutively active M-Ras exhibited a loss of epithelial markers and a gain of mesenchymal markers. These cells continued to grow in the absence of serum and gained the capacity for anchorage-independent growth in methylcellulose. Furthermore, unlike the parental cells, they failed to form differentiated mammospheres on Matrigel and instead formed branched networks of cells. When injected into mice scp2 cells expressing activated M-Ras rapidly formed tumors. Expression of activated p21 Ras also resulted in EMT and tumorigenesis, although there was evidence that high levels of expression were toxic to this cell type. Tumors derived from scp2 cells expressing activated M-Ras or p21 Ras exhibited activation of both PKB and ERK. When expressed at similar levels Q71L M-Ras and G12V H-Ras resulted in comparable rates of tumor formation, although higher levels of expression of the'weaker G22V M-Ras mutant were required. More abstract follow