cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Glacially-induced scaling relations in mountain drainage basins
Creators: name: Brardinoni, Francesco
Publisher: name: University of British Columbia
Year: 2010

description: In glaciated British Columbia, Canada, Quaternary climate changes are responsible for profound spatial reorganization of earth surface processes. These changes have left a landscape characterized by topographic anisotropy associated with a hierarchy of glacial troughs. The evolution of formerly glaciated landscapes is examined by considering a set of scaling relations and assessing their departures from known unglaciated trends. Ultimately, the magnitude of these departures should provide a measure of the state of landscape recovery (transience) from glacial disturbance. The set of scaling dependences studied includes slope-area relations, for assessing geomorphic process domains; landslide magnitude-frequency (LMF) and yield-area relations, for evaluating landslide-driven sediment dynamics; and the spatial organization of channel-reach morphology. In addition, along channel long-profiles the scaling between drainage area and channel cross-sectional variates (downstream hydraulic geometry), coarse grain-size fraction, and stream power indices are examined. The methodological approach couples extensive field surveys, GIS-based topographic analysis, air photo interpretation, and multivariate statistical analysis. Slope-area analysis reveals generalized process-form disequilibrium with a mismatch between topographic signatures and currently active geomorphic process domains. At the landscape scale of "source" colluvial channels, the glacial/paraglacial signature commonly overrides that produced by contemporary debris flows. Along the axis of former ice flows, relict glacial cirques introduce a "hanging" fluvial domain at contributing areas as small as 8*10⁻² km² and produce complex channel long-profiles similar to those observed for rivers responding to tectonic forcing. The concept of process domains appears to hold; however, some major glacially-forced modifications in the alluvial-colluvial transition are observed and the definition of a depositional colluvial sub-domain is proposed. Direct spatial scale linkages and generalized departure from unglaciated scaling relations are observed at all levels of investigation. Glacial macro-forms, by imposing local channel gradient and degree of colluvial-alluvial coupling, dictate the spatial distribution of process domains, which in turn affect LMF relations, landslide yield, channel-reach morphology, downstream hydraulic geometry, and stream power. The combination of glacial and post-glacial fingerprints and the effects of ongoing earth surface processes generate a complex landscape whose glacial signatures may persist until the onset of the next ice age.
Прямой и сопутствующий эффект прироста урожайности: какой больше?
Direct and indirect effect of increase of yield: which is bigger?
Creators: name: Parmakli, D.
name: Parmakli, D.
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: economic effect
subject: crop yield
subject: hectare
subject: cost of production
subject: revenue
subject: fixed and variable costs
subject: sales price

description: The purpose of the article – to provide methodological instruments for calculating direct and indirect economic effects of an increase in the yield of agricultural crops. The article presents a mathematical link between the cost of production, revenues and crop yield and demonstrates the interrelation mechanism between the crop yield and the cost of production on the output level of grain crops. The article also shows the dependency of output from the level of the grain crop yield, elaborates on the structure of a direct and concurrent effect from the growth of crop yield. It also presents a calculation algorithm for the level of the crop yield providing a predetermined level of profitability on crop output. The article explains the interrelation mechanism between the marginal revenue and the marginal crop yield. It is proved that the reserves of growth of efficiency of land use in agriculture consist in relative to save costs per unit of product.
Localization of Wannier functions for entangled energy bands
Creators: name: Birkenheuer, Uwe
name: Izotov, Dmitry
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A new method for the localization of crystalline orbitals for entangled energy bands is proposed. It is an extension of the Wannier-Boys algorithm [C. M. Zicovich-Wilson, R. Dovesi, and V. R. Saunders, J. Chem. Phys. 115, 9708 (2001)] which is particularly well-suited for linear combination of atomic orbital representations of the Bloch waves. It allows the inclusion of additional bands during the optimization of the unitary hybridization matrix used in the multi-band Wannier transformation. By a projection technique, the proper chemical character is extracted from the Bloch waves and compact localized orbitals are obtained even for entangled bands. The performance of the new projective Wannier-Boys localization is demonstrated on the low-lying unoccupied bands of trans-polyacetylene, diamond and silicon.
description: revtex4, 8 pages (twocolumn), 7 figures (composed of 12 *.eps-files), to be submitted to Phys. Rev. B
Сутність категорії «соціальна відповідальність» у контексті трансформації аграрного сектора
Essence of category of «social responsibility» in the context of transformation of agricultural sector
Creators: name: Pakhucha, Е.
name: Pakhucha, Е.
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Labor and Human Capital
subject: social responsibility
subject: corporate social responsibility
subject: social responsibility functions of the state
subject: the level of social responsibility
subject: stages of social responsibility

description: The purpose of the article is to determine the category of «social responsibility», the study stages of its development in the context economic transformation and features levels of social responsibility. In the article considers theoretical and methodological aspects of the category of «social responsibility», because the background mainstreaming issues of social responsibility and awareness of the importance of further development of society rarely social responsibility is interpreted as a factor that only certain way regulates businesses and rarely is the reason for the increase of social activities. The very same issues of social responsibility emerged as a result of the irresponsible behavior of a number of corporations in relation to the environment and human potential. Based on the fact that social responsibility is not narrowly directed concept study was conducted at different levels and determined that there is a relationship between them.
Parametrically narrow tetraquark states containing one heavy quark and one heavy antiquark
Creators: name: Cai, Yiming
name: Cohen, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This paper focuses on tetraquarks containing one heavy quark and one heavy antiquark in the formal limit where the heavy quark masses go to infinity. It extends the theoretical framework developed for tetraquark containing two heavy quarks based on semi-classical analysis and the Born-Oppenheimer approximation. It is shown that for sufficiently small light quark masses, parametrically narrow $q\bar{q}'Q\bar{Q}$ tetraquarks must exist in the formal limit of arbitrarily large heavy quark masses. The analysis is model-independent; it requires no assumptions about the structure of the state or the mechanism of its decay beyond what can be deduced directly from QCD. The formal analysis here is only directly applicable to tetraquarks with large angular momentum and hence does not directly apply to experimentally observed tetraquark candidates. We also discuss the condition needed for a version of the analysis to apply for low angular momenta states. Whether this condition holds can be explored via lattice calculations. Current lattice calculations suggest that the condition is not met. If these preliminary calculations are confirmed, there are strong implications for the nature of the observed tetraquark resonances containing $\bar{c}c$ or $\bar{b}b$ pairs. It raises the possibility that the observed tetraquarks exist and are narrow not because the charm and bottom quarks are extremely heavy, but because they are sufficiently light.
Ecologically certified agricultural production management system development
Creators: name: Dankevych, Y.
name: Dankevych, V.
name: Chaikin, O.
name: Dankevych, Y.
name: Dankevych, V.
name: Chaikin, O.
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Environmental Economics and Policy
subject: ecological certification
subject: production certification
subject: ecological needs
subject: loans

description: Ecologically certified production management system formation and implementation is the necessary condition for the economy at the sustainable development basis efficient functioning, providing high life quality and environmental public safety. Actual raises the question of businesses involvement to the production that contains ecological component as well their stimulation for going through the environmental certification procedure. The aim of the research is to study the possibility of ecologically certified agricultural production management systems development stimulating factors use stimulation of ecologically oriented innovative entrepreneurship. Have been analysed the results of experts interviews to obtain the information about the validity of ecological and social risks of agricultural enterprises – debtors for the domestic creditors. Factors of certified agricultural production that can influence the decision-making about loans in the assessment and environmental risk banking institutions management have been determined. With the help of abstract logical method individual consumer`s ecological needs in ecologically certified agricultural products satisfaction scenarios matrix designed. Ukrainian ecologically certified agricultural production development stimulating factors were determined.
Cosmogenic Neutrinos from Ultra-High Energy Nuclei
Creators: name: Ave, Maximo
name: Busca, N.
name: Olinto, A. V.
name: Watson, A. A.
name: Yamamoto, T.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We calculate the flux of neutrinos generated by the propagation of ultra-high energy iron over cosmological distances and show that even if ultra-high energy cosmic rays are composed of heavy nuclei, a significant flux of high-energy neutrinos should be present throughout the universe. The resulting neutrino flux has a new peak at $\sim 10^{14} eV$ generated by neutron decay and reproduces the double peak structure due to photopion production at higher energies ($\sim 10^{18}$ eV). Depending on the maximum energy and cosmological evolution of extremely high energy cosmic accelerators the generated neutrino flux can be detected by future experiments.
description: 8 pages, 6 figures
Anacroneuria singularis Righi-Cavallaro & Lecci. Additionally 2010
Creators: name: Carvalho, André De Sousa
name: Almeida, Lucas Henrique De
name: Azevêdo, Carlos Augusto Silva De
name: Lima, Lucas Ramos Costa
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Anacroneuria
Anacroneuria singularis

description: Anacroneuria singularis Righi-Cavallaro & Lecci, 2010
(Fig. 1B, 2 E–F)
 Anacroneuria singularis Righi-Cavallaro & Lecci, 2010: 42; Novaes & Bispo 2014: 435; Ribeiro et al. 2015: 296; Ribeiro & Gorayeb 2016: 434; Firmino et al. 2019: 447; Rippel et al. 2019: 360.
 Distribution. BRAZIL: States of Mato Grosso do Sul, São Paulo, Minas Gerais and Pará. New record: State of Maranhão.
 Material examined. BR, MA: Mirador, Parque Estadual do Mirador, Base da Geraldina, 06°37’25”S, 45°52’08”W, 419m, 10–20/IV/2014, F. Limeira-de-Oliveira, 1 male. Caxias municipality, Pé da Serra, Itapecuru River, 05°07′28.5″S, 43°33′02.3″W, 60m, 28/VII/2018, Nascimento, J.I.S. Jesus, D.C. Sousa and M.A.G. Almeida, 2 males; same data except 21/XI/2018, 1 male.
 Morphometric data. Male (n=4) forewing length: 7.9–10 mm (mean= 9.23 mm).
 Remarks. The species had been recorded in the Amazon Forest of the State of Pará (Ribeiro & Santos 2018) and Rondônia (Firmino et al. 2019); and in the Cerrado in the states of Mato Grosso do Sul (Righi-Cavallaro & Lecci 2010), Minas Gerais (Novaes & Bispo 2014), and Tocantins (Rippel et al. 2019). Our record is the first record for the State of Maranhão and northeastern Brazil (Fig. 1B).
description: Published as part of Carvalho, André De Sousa, Almeida, Lucas Henrique De, Azevêdo, Carlos Augusto Silva De & Lima, Lucas Ramos Costa, 2020, The genus Anacroneuria Klapálek, 1909 (Plecoptera: Perlidae) from Maranhão State, northeastern Brazil, pp. 435-444 in Zootaxa 4860 (3) on pages 439-441, DOI: 10.11646/zootaxa.4860.3.8, http://zenodo.org/record/4414085
Black Hole Shadows in M-theory Scenarios
Creators: name: Belhaj, A.
name: Benali, M.
name: Balali, A. El
name: Hadri, W. El
name: Moumni, H. El
name: Torrente-Lujan, E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the shadows of four dimensional black holes in M-theory inspired models. We first inspect the influence of M2-branes on such optical aspects for non-rotating solutions. In particular, we show that the M2-brane number can control the circular shadow size. This geometrical behavior is distorted for rotating solutions exhibiting cardioid shapes in certain moduli space regions. Implementing a rotation parameter, we analyze the geometrical shadow deformations. Among others, we recover the circular behaviors for a large M2-brane number. Investigating the energy emission rate at high energies, we find, in a well-defined approximation, that the associated peak decreases with the M2-brane number. Moreover, we investigate a possible connection with observations (from Event Horizon Telescope or future devices) from a particular M-theory compactification by deriving certain constraints on the M2-brane number in the light of the $M87^\star$ observational parameters.
description: latex, 21 pages, and 8 figures. A section in connexion with observations has been added. Accepted for publication in International Journal of Modern Physics D (2021)
Long-term retrospective development of agriculture in Bulgaria, 1934–1989
Creators: name: Rangelova, R.
name: Vladimirova, K.
name: Rangelova, R.
name: Vladimirova, K.
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: agriculture
subject: agricultural development
subject: Bulgaria
subject: centrally planned economy
subject: market type economy

description: The reform of agricultural land was one of the primary tasks during the transition from centrally planned to market economy in Bulgaria. The only undoubted point was the necessity of land restitution. It was without a doubt important to return the land to its rightful owners, the so called restitution. Both politicians and theoreticians were caught off guard in the face of the much needed radical reforms. The former is the main reason rendering some of the laws voted by the Bulgarian Parliament, including Law on Ownership and Use of the Farmland (1991) inefficient. The paper is aimed at outlining the main features of the long-term agricultural development in Bulgaria throughout the 20th century, namely before and during WWII as well as the period of centrally planned economy leading up to 1989. The historical overview is employed a background for the purpose of outlining preconditions for the following process of transition once again of agriculture to market economy type.
Entrepreneurship in organic production – an incentive for sustainable rural development
Creators: name: Terziev, V.
name: Terziev, V.
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: organic farming
subject: sustainable development
subject: entrepreneur
subject: entrepreneurship

description: The implementation of the strategic goals of economic, social and ecological development should start by entrepreneurship encouragement in rural areas for development of agrarian and related activities. The significance of protection of environmental components (soil, water, air, biodiversity, landscape) in global aspect directs the development towards sustainable agriculture, and organic production in particular, and its integration to other activities as tourism development. Current paper discusses entrepreneurship in organic production and trade as one of the main drivers of economic growth, productiveness and innovations in rural regions. Organic production is economically effective, ecologically compatible and socially responsible and it occurs to be an effective entrepreneurial strategy for rural development starting from urban areas demand and embracing not only food or other products but also places for rest, tourism, landscape preservation, protection of nature, culture, infrastructure development, etc., aiming at increase in competitiveness by applying an ecological technology using a new approach – planning, management and control over the production process.
Fused PET/MRI images in the therapeutic follow-up of recurrent chordoma: A case report
Creators: name: Chaltout, Fatma
name: Ben Fkih, Nawres
name: Ben Nasr, Maali
name: Chaari, Mohamed Amine
name: Amouri, Wissem
name: Chtourou, Khalil
name: Guermazi, Fadhel
Publisher: name: Biomedicine & Healthcare Research
Year: 2024

description: Chordoma is an uncommon and malignant bone tumor that mainly occurs in the sacrum. Despite successful radical resection followed by radiotherapy, this tumor is still associated with a high rate of recurrence. As far as we know, this is the first reported case of recurrent chordoma where the integrated PET/MRI was used to ensure accuracy for staging and treatment management. We present a case of a 76-year-old man with a history of sacrococcygeal chordoma treated surgically 2 years earlier. Recently, a local recurrence has been suspected following the appearance of a subcutaneous nodule on the surgical scar. Therefore, a pelvic MRI scan was done showing hypointense and hyperintense nodules in weighted T1 and T2 images, respectively. The fused PET/MRI images revealed the presence of abnormal foci of 18F-FDG uptake not only in the multiple lesions identified in the MRI but also in the adjacent soft tissue, suggestive of extensive sites of recurrence. In conclusion, fused PET/MRI acquisitions hold the potential for a significant contribution to managing recurrent chordomas and refining therapeutic follow-up.
description: Biomedicine & Healthcare Research, Vol. 2 No. 1 (2024)
Role of FDG-PET/CT in the diagnosis of recurrent breast cancer
Creators: name: Benfekih, Nawres
name: Chaltout, Fatma
name: BintMohamed, Tebgha
name: Ben Ahmed, Khaoula
name: Jardak, Issam
name: Chtourou, Khalil
name: Guermazi, Fadhel
Publisher: name: Biomedicine & Healthcare Research
Year: 2024

description: In patients with recurrent breast cancer, FDG PET/CT has demonstrated superior efficacy compared to conventional imaging (CI) in identifying loco-regional or distant recurrence. This holds true regardless of whether recurrence is suspected based on clinical examination, CI, or an increase in tumor markers (TM) such as CA 15.3 or CEA, and even if tumor markers are within normal ranges. PET/CT is also a powerful imaging modality for conducting a whole-body workup of a known recurrence aiding in the determination of whether the recurrence is isolated. To investigate our experience with the concordance of FDG-PET/CT and CI, we studied cases of breast carcinoma retrospectively collected between 2022 and 2023 from our institution's archive. PET images were analyzed by at least two nuclear medicine specialists. We then compared them with the findings of CI and analyzed their accuracy based on patients' follow-up. A total of 25 patients was selected. PET-CT was effective in clarifying uncertain findings from CT scans. It ruled out bone metastasis in two out of nine equivocal cases and confirmed seven out of nine. It excluded three out of seven pulmonary lesions while confirming three. It also confirmed other uncertain lesions in CT, such as muscular and parietal ones. Moreover, PET/CT detected additional lesions not seen in CT [bone (n=4) and liver (n=1)]. In conclusion, this study supported the findings of prior studies, highlighting the valuable contribution of PET/CT in the detection of recurrent breast cancer and its superiority to CI.

 
description: Biomedicine & Healthcare Research, Vol. 2 No. 1 (2024)
Забезпечення конкурентоспроможності підприємств через стратегічне управління людськими ресурсами
The ensuring of the competitiveness of the enterprises through the strategic human resource management
Creators: name: Burkovska, A.
name: Romanchyk, M.
name: Burkovska, A.
name: Romanchyk, M.
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Labor and Human Capital
subject: competitiveness of enterprises
subject: competitiveness management
subject: strategic human resource management
subject: human resources
subject: labor market

description: The purpose of the article is to study the possibilities of ensuring competitiveness through the strategic human resource management. The study is based on the description of the necessity of strategic human resource management in Ukrainian conditions as a tool to enhance the competitiveness of agricultural enterprises. It is proved that the strategic management of the organization is the initial condition for the strategic management of its staff and competitiveness. Strategic management of human resources potential is considered as an approach to making decisions on the intentions and plans of the organization relating to the strategy and practice of recruitment, training, development, management performance and labor relations. The article describes the features of strategic human resource management as a basis for strategic capacity, which affects the competitiveness of enterprises and determines the direction of its further development. Correlation and regression analysis of dependence of productivity on the size of the average monthly wage of workers in the agricultural sector was held.
Exploit Camera Raw Data for Video Super-Resolution via Hidden Markov Model Inference
Creators: name: Liu, Xiaohong
name: Shi, Kangdi
name: Wang, Zhe
name: Chen, Jun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: To the best of our knowledge, the existing deep-learning-based Video Super-Resolution (VSR) methods exclusively make use of videos produced by the Image Signal Processor (ISP) of the camera system as inputs. Such methods are 1) inherently suboptimal due to information loss incurred by non-invertible operations in ISP, and 2) inconsistent with the real imaging pipeline where VSR in fact serves as a pre-processing unit of ISP. To address this issue, we propose a new VSR method that can directly exploit camera sensor data, accompanied by a carefully built Raw Video Dataset (RawVD) for training, validation, and testing. This method consists of a Successive Deep Inference (SDI) module and a reconstruction module, among others. The SDI module is designed according to the architectural principle suggested by a canonical decomposition result for Hidden Markov Model (HMM) inference; it estimates the target high-resolution frame by repeatedly performing pairwise feature fusion using deformable convolutions. The reconstruction module, built with elaborately designed Attention-based Residual Dense Blocks (ARDBs), serves the purpose of 1) refining the fused feature and 2) learning the color information needed to generate a spatial-specific transformation for accurate color correction. Extensive experiments demonstrate that owing to the informativeness of the camera raw data, the effectiveness of the network architecture, and the separation of super-resolution and color correction processes, the proposed method achieves superior VSR results compared to the state-of-the-art and can be adapted to any specific camera-ISP. Code and dataset are available at https://github.com/proteus1991/RawVSR.
description: 13 pages, 14 figures, accepted in IEEE Transactions on Image Processing
Anacroneuria leccii Carvalho & Almeida & Azevêdo & Lima 2020, sp. nov.
Creators: name: Carvalho, André De Sousa
name: Almeida, Lucas Henrique De
name: Azevêdo, Carlos Augusto Silva De
name: Lima, Lucas Ramos Costa
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Anacroneuria
Anacroneuria leccii

description: Anacroneuria leccii sp. nov. Carvalho, Almeida & Lima
(Figs. 1B, 4 A–F)
 Material examined. BR, MA. Holotype male: Carolina, PARNA Chapada das Mesas, Riacho Estiva, 07º06’59.8”S, 47º21’21.0”W, 20–30/IV/2013, F. Limeira-de-Oliveira and T. A. Silva (CZMA).
 Description. Holotype male: forewing length, 9 mm. General color pale yellow. Head pale yellow and pronotum yellowish; M-line indistinguishable (Fig. 4A). Antennae yellowish to ochraceous, scape and pedicel yellowish, flagellum yellowish at the base becoming ochraceous from the third antennomere. Palpi ochraceous. Pronotum pale yellow with two darker stripes laterally, anterior corners not rounded, posterior corners rounded (Fig. 4A). Membrane and veins of wings white, hindwings almost translucent; posterior radius, base of anterior cubital and anal veins of forewings darker. Seven cells of various sizes between the medial and anterior cubital veins. Legs pale yellow with a dark stripe dorsally on distal part of the femur. Cerci pale yellow.
 Male. Sternum IX with small bristles on the posterior area. Hammer as a simple cone (Fig. 4D). Penial armature (Figs. 4 E–G) truncate apically with a pair of distal vesicles. In the lateral view (Fig. 4G), there are small spines on the keel. In the ventral view (Fig. 4F), there are subapical shoulders. In dorsal view (Fig. 4E), behind the vesicles and the hooks, the shoulders fold inwards. Hooks regularly curved and acute apically.
 Female and nymph. Unknown.
 Remarks. The penial armature of A. leccii is similar to A. novateutonia Froehlich, 2002. In dorsal view, both species have subapical shoulders, however, in the new species the sclerotized portion is narrower at the base, gradually expanding to the subapical shoulders. In the same view, the apex of the armature of A. novateutonia has a regular shape, narrowing uniformly to the top, which is irregular in the new species. In lateral view, the keel of A. novateutonia is flattened with lateral striae, in the new species spines are present. The penial armature of A. leccii has also prominent vesicles and is of a different color including different maculation pattern of the head and pronotum than A. novateutonia.
 Etymology. The name honors Lucas S. Lecci, one of the pioneers in research on Plecoptera in the northeast region.
description: Published as part of Carvalho, André De Sousa, Almeida, Lucas Henrique De, Azevêdo, Carlos Augusto Silva De & Lima, Lucas Ramos Costa, 2020, The genus Anacroneuria Klapálek, 1909 (Plecoptera: Perlidae) from Maranhão State, northeastern Brazil, pp. 435-444 in Zootaxa 4860 (3) on page 441, DOI: 10.11646/zootaxa.4860.3.8, http://zenodo.org/record/4414085
Setting the quantum integrand of M-theory
Creators: name: Freed, Daniel S.
name: Moore, Gregory W.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In anomaly-free quantum field theories the integrand in the bosonic functional integral--the exponential of the effective action after integrating out fermions--is often defined only up to a phase without an additional choice. We term this choice ``setting the quantum integrand''. In the low-energy approximation to M-theory the E(8)-model for the C-field allows us to set the quantum integrand using geometric index theory. We derive mathematical results of independent interest about pfaffians of Dirac operators in 8k+3 dimensions, both on closed manifolds and manifolds with boundary. These theorems are used to set the quantum integrand of M-theory for closed manifolds and for compact manifolds with either temporal (global) or spatial (local) boundary conditions. In particular, we show that M-theory makes sense on arbitrary 11-manifolds with spatial boundary, generalizing the construction of heterotic M-theory on cylinders.
description: 52 pages; revised version for publication in Commun. Math. Phys. corrects a few typos
Exponentially confining potential well
Creators: name: Alhaidari, A. D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce an exponentially confining potential well that could be used as a model to describe the structure of a strongly localized system. We obtain an approximate partial solution of the Schrödinger equation with this potential well where we find the lowest energy spectrum and corresponding wavefunctions. The Tridiagonal Representation Approach (TRA) is used as the method of solution, which is obtained as a finite series of square integrable functions written in terms of the Bessel polynomial.
description: Two new tables and a new appendix has been added. Figures were improved. Acknowledgement was also added. Dedicated to the memory of my friend, colleague and collaborator, the late Mohammed S. Abdelmonem
Floquet Formalism of Quantum Pumps
Creators: name: Kim, Sang Wook
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We review Floquet formalism of quantum electron pumps. In the Floquet formalism the quantum pump is regarded as a time dependent scattering system, which allows us to go beyond the adiabatic limit. It can be shown that the well-known adiabatic formula given by Brouwer can be derived from the adiabatic limit of Floquet formalism. We compare various physical properties of the quantum pump both in the adiabatic and in the non-adiabatic regime using the Floquet theory.
description: Latex2e 16 pages, 6 figures. A review paper to appear in Int. J. Mod. Phys. B
Why Do Elastin-Like Polypeptides Possibly Have Different Solvation Behaviors in Water-Ethanol and Water-Urea Mixtures?
Creators: name: Zhao, Yani
name: Singh, Manjesh K.
name: Kremer, Kurt
name: Cortes-Huerto, Robinson
name: Mukherji, Debashish
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: The solvent quality determines the collapsed or the expanded state of a polymer. For example, a polymer dissolved in a poor solvent collapses, whereas in a good solvent it opens up. While this standard understanding is generally valid, there are examples when a polymer collapses even in a mixture of two good solvents. This phenomenon, commonly known as co-non-solvency, is usually associated with smart polymers. Moreover, recent experiments have shown that the elastin-like polypeptides (ELPs) show co-non-solvency behavior in aqueous-ethanol mixtures. In this study, we investigate the phase behavior of ELPs in aqueous binary mixtures using molecular dynamics simulations of all-atom and complementary explicit solvent generic models. The model is parameterized by mapping the solvation free energy obtained from the all-atom simulations onto the generic interaction parameters. For this purpose, we derive segment based generic parameters for four different peptides, namely proline (P), valine (V), glycine (G) and alanine (A). Here we compare the conformational behavior of two ELP sequences, namely VPGGG and VPGVG, in aqueous-ethanol and -urea mixtures. Consistent with recent experiments, we find that ELPs show co-non-solvency in aqueous-ethanol mixtures. Ethanol molecules have preferential binding with all ELP residues and thus driving the coil-to-globule transition. On the contrary, ELP conformations show weak variation in aqueous-urea mixtures. Our simulations suggest that the glycine residues dictate the overall behavior of ELPs in aqueous-urea, where urea molecules have a rather weak preferential binding with glycine, i.e., less than kT. While the validation of the latter findings will require more detailed experimental investigation, the results presented here may provide a new twist to the present understanding of cosolvent interactions with peptides and proteins.
description: Accepted for publication in Macromolecules
Common pitfalls and recommendations for using machine learning to detect and prognosticate for COVID-19 using chest radiographs and CT scans
Creators: name: Roberts, Michael
name: Driggs, Derek
name: Thorpe, Matthew
name: Gilbey, Julian
name: Yeung, Michael
name: Ursprung, Stephan
name: Aviles-Rivero, Angelica I.
name: Etmann, Christian
name: McCague, Cathal
name: Beer, Lucian
name: Weir-McCall, Jonathan R.
name: Teng, Zhongzhao
name: Gkrania-Klotsas, Effrossyni
name: Rudd, James H. F.
name: Sala, Evis
name: Schönlieb, Carola-Bibiane
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Machine learning methods offer great promise for fast and accurate detection and prognostication of COVID-19 from standard-of-care chest radiographs (CXR) and computed tomography (CT) images. Many articles have been published in 2020 describing new machine learning-based models for both of these tasks, but it is unclear which are of potential clinical utility. In this systematic review, we search EMBASE via OVID, MEDLINE via PubMed, bioRxiv, medRxiv and arXiv for published papers and preprints uploaded from January 1, 2020 to October 3, 2020 which describe new machine learning models for the diagnosis or prognosis of COVID-19 from CXR or CT images. Our search identified 2,212 studies, of which 415 were included after initial screening and, after quality screening, 61 studies were included in this systematic review. Our review finds that none of the models identified are of potential clinical use due to methodological flaws and/or underlying biases. This is a major weakness, given the urgency with which validated COVID-19 models are needed. To address this, we give many recommendations which, if followed, will solve these issues and lead to higher quality model development and well documented manuscripts.
description: 35 pages, 3 figures, 2 tables, updated to the period 1 January 2020 - 3 October 2020
title: Teachers Being Creative: Technology in Drama?
Creators: name: Lupson, Kathryn
Publisher: name: The Open University
Year: 2017

description: The importance of creativity in the teaching of Drama in secondary schools has long been accepted (Davis 2010) and during the last 20 years, the importance of technology in the teaching of any school subject has grown. This thesis explores the journey of two Drama teachers as they attempted to develop their creative use of technology. My findings contribute to increased understanding of the challenges in developing the creative use of technology in Drama teaching. The key research question focussed on whether the participants were able to use technology creatively. The research used a naturalistic method of enquiry, based in two similar schools in the same county. An action research cycle took place over three phases during one academic year. The data collection methods used were video recordings of the Year 7 lessons focussing on the teacher with both participants blogging about their experiences. The data was analyzed using Template analysis and Critical Incident analysis. The research challenges the view that creativity has a definitive meaning, rather that creativity is a fluid set of concepts that can be applied in a variety of styles in the classroom. The main findings of the research reveal the evolution of the creative attitudes of the participants as their technology use developed. This research contributes to the theoretical knowledge of the concept of creativity in education and its practical applications in the classroom. The study reveals the creative journey of both participants, the divergence of these journeys and the potential to enhance the creative experience for teachers in our schools. It also challenges the belief that creativity in the classroom can be generated using a pre-determined set of approaches.
On the computational complexity of uncapacitated multi-plant lot-sizing problems
Creators: name: Cunha, J. O.
name: Kramer, H. H.
name: Melo, R. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Computational Complexity (cs.CC)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Production and inventory planning have become crucial and challenging in nowadays competitive industrial and commercial sectors, especially when multiple plants or warehouses are involved. In this context, this paper addresses the complexity of uncapacitated multi-plant lot-sizing problems. We consider a multi-item uncapacitated multi-plant lot-sizing problem with fixed transfer costs and show that two of its very restricted special cases are already NP-hard. Namely, we show that the single-item uncapacitated multi-plant lot-sizing problem with a single period and the multi-item uncapacitated two-plant lot-sizing problem with fixed transfer costs are NP-hard. Furthermore, as a direct implication of the proven results, we also show that a two-echelon multi-item lot-sizing with joint setup costs on transportation is NP-hard.
Using DMU Figshare to facilitate cross-disciplinary, multi-national collaboration on mental health literacy using narrative interviews and theatre methodology
Creators: name: Raghu Raghavan
name: Svirydzenka, Nadzeya
name: Wilson, Amanda
name: Hardeman, Megan
name: Hussain, Aamir
Publisher: name: De Montfort University
Year: 2020
Subjects: Uncategorized

description: Raghu, Nadia, and Amanda are affiliated with the Mary Seacole Research Centre, an interdisciplinary researchinstitute that brings together researchers from health humanities, psychology, environmental science, creativetechnologies, theatre-makers, and more.
One of their current research projects looks at how rural and urban communities in Kerala, India understand mentalhealth literacy using theatre methodology.
Key points:
Professor Raghu Raghavan, Dr. Nadia Svirydzenka, and Dr. Amanda Wilson and their colleagues are collecting narrative interviews and visual documentation of how rural and urban communities in Kerala, India understand mental health literacy using cross-discipline collaboration.
A Figshare project space has been created to store and share anonymized transcriptions and translations of narrative interviews for analyzing and discussion across colleagues from various institutions globally.
For researchers looking to embark on a similar area of research, they suggest as much forward-planning as possible to ensure you are able to share meaningfuldata in a controlled, appropriate way.
Hypoxia and rapamycin induced changes to the cell cycle of multicellular spheroids and human tumour xenografts leading to potential therapeutic advantage
Creators: name: Wong, Michelle
Publisher: name: University of British Columbia
Year: 2010

description: The cell cycle is a tightly regulated process that is functioning optimally when all factors contribute at the precise time and level that is required. However, in tumours some of these pathways are malfunctioning and to study this, we are utilizing spheroids as our in vitro tumour model system. In this thesis, we hypothesize that spheroids once adequately characterized will provide an invaluable means to assess the potential for using cytostatic agents to minimize accelerated repopulation and target radioresistant cells during radiation therapy of multicellular systems. The general methods involved for the majority of the work included immunoblotting, flow cytometry, as well as clonogenic assays. We have studied differences in the cell cycle time of subpopulations within each spheroid, where cells near the necrotic center showed a prolonged cell cycle time. Cycle time required by the peripheral cell layers was more rapid suggesting that cell kinetic variations may likely be a result of the local microenvironmental conditions such as hypoxia. Cyclin B1 and D levels were measured in spheroid populations that were subjected to a range of anoxic to aerobic conditions where cyclin levels decreased with decreasing concentrations of oxygen. Interestingly, these observations illustrate that measuring cyclin levels can provide a quick and convenient index for proliferation rate. The cytostatic agent, rapamycin, was analyzed for its influence on cell cycle progression and its affect on cyclin levels. Using human WiDr tumour xenografts, we found that the combination of rapamycin treatment with radiation had additive therapeutic benefits. Accelerated repopulation has been established as a limitation in radiation therapy of some cancers. Therapeutic advances have led to using accelerated fractionation regimens in an attempt to counteract the tumours’ inherent ability to grow in the face of continued therapy. Since accelerated repopulation of irradiated tumours may be associated with the recruitment of quiescent cells into the cell cycle, rapamycin can potentially be used to control those cells. By incorporating rapamycin and concurrently administering radiation, we found a synergistic effect where the cell cycle time of the solid xenograft tumours were even slower than with either treatment alone.
THE IMPACT OF ENVIRONMENTAL CONSCIOUS LOGISTIC IN INDIA: AN EMPIRICAL ANALYSIS
Creators: name: Tanya Singh
name: Jaya Bhasin
name: Shahid Mustaq
name: Preeti Slathia
Publisher: name: Zenodo
Year: 2024
Subjects: Green Supply Chain, Econometrics, India, Economic Growth, Environmental Degradation.

description: Abstract

The study investigates the interplay between environmentally friendly supply chains, energy demands, and socio-economic factors within the Indian context from 2007 to 2023. It highlights the growing importance of green logistics in supply chain management, particularly in response to environmental concerns and the urgent need to reduce carbon emissions. Employing comprehensive statistical analysis, the study underscores the necessity of implementing legislative measures to facilitate India's transition toward sustainable economic growth. The methodology, which includes descriptive statistics to assess central tendencies, variability, skewness, and kurtosis, along with unit root tests confirming the stationarity of time series variables post-differencing, enhances predictive accuracy. Granger causality tests reveal significant causal relationships among various economic variables, shedding light on their interdependencies. Regression analysis further elucidates the impact of green logistics on energy demand, economic stability, and environmental factors in India. Data for this study were sourced from the Worldwide Input-Output Database (WIOD, 2019) for the specified period. Policy recommendations emphasize the promotion of clean energy sources, the establishment of emissions standards, investments in sustainable infrastructure, stakeholder collaboration, and the integration of financial incentives aligned with climate goals. Additionally, the development of legal frameworks to encourage the adoption of eco-friendly logistics practices and the promotion of educational initiatives aimed at engaging both industry stakeholders and the general public are advocated. Collectively, these strategies could help India reduce transportation emissions, enhance sustainability, and contribute to global climate objectives, fostering a cleaner energy environment.
Double layer from least action principle
Creators: name: Berezin, V. A.
name: Dokuchaev, V. I.
name: Eroshenko, Yu. N.
name: Smirnov, A. L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We derived the equations for the double layers in Quadratic Gravity, using solely the least action principle. The advantage of our approach is that, in the process of calculation, the $δ'$-function does not appear at all, and the $δ$-functions appear for a moment and are mutually canceled prior to integration. We revealed the peculiar structure of the obtained equations, namely, that the surface energy-momentum tensor of the matter fields (constituents of the thin shells) does not play a role in the determination of the trajectory of the double layer. Also, we suggested that the space-like double layers may provide us with the adequate description of the creation of the universe from the black hole singularity. The related topics, including the Gauss-Bonnet term and $F(R)$-theories, are shortly discussed.
description: 15 pages, minor proofs, submitted to CQG
title: Identification of Markers to Predict Benefit from Trastuzumab Treatment
Creators: name: Triulzi, Tiziana
Publisher: name: The Open University
Year: 2017

description: Despite the clinical benefit of trastuzumab, some patients do not respond to this therapy. Aims of this study are to identify new predictive biomarkers to distinguish responsive from de novo resistant tumours and to have new insights into the biological characterisation of trastuzumab activity.

 Whole-transcriptome analysis of primary HER2-positive breast carcinomas (BCs) treated with adjuvant trastuzumab identified a tumour subgroup, characterised by high ERBB2/low ESR1 expression, with good clinical outcome, and allowed the development of a trastuzumab risk model (TRAR) able to identify patients with high- and low-risk of relapse. Application of TRAR model to available datasets and to a new series of HER2-positive BC patients treated with neoadjuvant trastuzumab designated TRAR as predictive of response rather than associated to low aggressiveness. Our analyses showed that tumours exquisitely sensitive to treatment are addicted to HER2, enriched in immune pathways and have a peculiar circulating NK profile, characterised by high expression of the NKG2D receptor. Enrichment of immune system- and tyrosine kinase receptor signaling-related pathways was found associated also with response to trastuzumab monotherapy in clinical samples, suggesting the possibility to treat HER2-addicted tumours with trastuzumab monotherapy. Accordingly TRAR-low, high-NKG2D- and -MHC-II-expressing tumours were associated with response to one cycle of trastuzumab alone. In addition, increase of MHC-II gene expression upon a single cycle of trastuzumab characterised patients who benefit from the following combination with chemotherapy. Characterisation of biological features of TRAR-low tumours showed high infiltration of macrophages and CD8+ T cells, together with the expression of chemokines involved in their recruitment and of immune checkpoint ligands. In vitro analysis demonstrated a direct regulation of CCL2 and PD-L1 by HER2 signals.

 Overall, we described a tool able to identify BCs responsive to trastuzumab and understood that in these tumours HER2 is crucial for tumour growth, for infiltration of pro-trastuzumab immune cells and their suppression.