cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Mental Health Impacts of Child Labour: Evidence from Vietnam and India
Creators: name: Trong-Anh Trinh
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: A number of recent studies have investigated the relationship between child labour and physical health. However, there has been little empirical evidence that child labour affects children’s emotional and behavioural development. This study departs from existing literature by examining the mental health impacts of child labour in Vietnam and India, as measured by the Strengths and Difficulties Questionnaire. The potential endogeneity of child labour is addressed by using rainfall as the instrument. The findings show that children engaged in child labour suffer from mental health issues as measured by peer problems and reduced prosocial behaviour in both countries. There is a significant gender difference in the impact of child labour in India. Finally, doing household chores, an accepted social and cultural work in developing countries is found to be associated with the better mental health of children in Vietnam.
Predicting Skill Shortages in Labor Markets: A Machine Learning Approach
Creators: name: Dawson, Nik
name: Rizoiu, Marian-Andrei
name: Johnston, Benjamin
name: Williams, Mary-Anne
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Economics (econ.GN)
subject: Computers and Society (cs.CY)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences

description: Skill shortages are a drain on society. They hamper economic opportunities for individuals, slow growth for firms, and impede labor productivity in aggregate. Therefore, the ability to understand and predict skill shortages in advance is critical for policy-makers and educators to help alleviate their adverse effects. This research implements a high-performing Machine Learning approach to predict occupational skill shortages. In addition, we demonstrate methods to analyze the underlying skill demands of occupations in shortage and the most important features for predicting skill shortages. For this work, we compile a unique dataset of both Labor Demand and Labor Supply occupational data in Australia from 2012 to 2018. This includes data from 7.7 million job advertisements (ads) and 20 official labor force measures. We use these data as explanatory variables and leverage the XGBoost classifier to predict yearly skills shortage classifications for 132 standardized occupations. The models we construct achieve macro-F1 average performance scores of up to 83 per cent. Our results show that job ads data and employment statistics were the highest performing feature sets for predicting year-to-year skills shortage changes for occupations. We also find that features such as 'Hours Worked', years of 'Education', years of 'Experience', and median 'Salary' are highly important features for predicting occupational skill shortages. This research provides a robust data-driven approach for predicting and analyzing skill shortages, which can assist policy-makers, educators, and businesses to prepare for the future of work.
Occupational Diversification in the Rural Sector a State Level Analysis for India: Some Observations
Creators: name: Bhue, Chitrasen
name: Bhue, Chitrasen
Publisher: name: Unknown
Year: 2017
Subjects: subject: Community/Rural/Urban Development
subject: Rural
subject: Cultivator
subject: Agricultural Labour
subject: Occupational Diversification
subject: Non-farm sector

description: The rural occupational structure of the Indian economy is witnessing a change in between 2003 and 2013. Unlike the ‘traditional’ transition process wherein households moved from the farm sector to the non-farm sector, the Indian case does not present a unique trend in this direction but has multiple movements within the rural economy. Focusing on the two different methods of occupational classification, the present article is an attempt to explain the patterns of diversification of the rural Indian economy. The questions raised here are: Is the share of households in farm sector reducing, if yes, who is diversifying from the farm sector (cultivator or agricultural labour), which occupational groups are increasing their share. The present study uses the National Sample Survey’ (NSS) unit level data on Household Debt and Investment and identifies three different important partial movements in the rural Indian economy. One is the significant decline in the share of ‘other’ households in the non-farm sector. These households might be the households with surplus who have moved out of rural sector to the urban sector. The second movement is the decline in the share of agricultural labour households and a movement towards increasing share of cultivators/self-employed in agriculture (a movement within farm sector) on the one hand and the growth of ‘other labour’ ( a movement towards pure non-farm sector) on the other hand. The third movement, if mixed households represent plural households, is an increase in the mixed households in ‘other labour’ category within this group. Maybe this is also a distress driven strategy of marginal farmers to self-cultivate their land as well as sell their labour to households in the non-farm sector. If the above trends are a relative approximation of the process in the real world, there is a need to think the agrarian reforms issue from the side of distress driven segments in the economy.
Potentilla sarmatica Christenh. & Vare 2012, comb. nov.
Creators: name: Christenhusz, Maarten J. M.
name: Väre, Henry
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Rosaceae
Potentilla
Potentilla sarmatica

description: Potentilla sarmatica (Juz.) Christenh. & Väre, comb. nov.
 Basionym: Alchemilla sarmatica Juzepczuk (1937: 202).
description: Published as part of Christenhusz, Maarten J. M. & Väre, Henry, 2012, New combinations in Potentilla (Rosaceae) for the Nordic Flora, pp. 1-5 in Phytotaxa 57 (1) on page 4, DOI: 10.11646/phytotaxa.57.1.1, http://zenodo.org/record/5061285
Implications of Price and Trade Policies of Rice Onincome and Poverty in Sri Lanka
Creators: name: Wijetunga, Chatura Sewwandi
name: Wijetunga, Chatura Sewwandi
Publisher: name: Unknown
Year: 2017
Subjects: subject: Crop Production/Industries
subject: rice
subject: fertilizer subsidy
subject: import tariff
subject: poverty

description: This paper analyzes the income and poverty implications of price and trade policy distortions in rice using policy simulations. The results suggest that in general, the welfare of paddy farmers will get decline if both fertilizer subsidy and border protection are removed. However, among the paddy producers, poor households with smaller farm size (less than one acre) gain the benefits when both interventions are removed. Therefore, current protectionist policies in rice give fewer benefits to the small poor farmers. Meantime, the negative impacts get softened in the long run when supply and demand elasticities are incorporated. Especially the current fertilizer subsidy has a greater impact on paddy farmers’ welfare. In contrast, the larger populations of consumers are favorably affected when interventions are removed. The larger proportion of benefits are received by the low income consumers, hence removal of such intervention in terms of tariffs and other taxes as well as fertilizer subsidy would be beneficial to the larger portion of consumers. In addition, simulations with transfer payments given to all households below the poverty line or paddy households only will reduce the negative implications on income and poverty of the households. The largest poverty reduction is reported for the estate sector consumers with poverty level reduce from 23 percent to 20 percent when both interventions are removed accompanying transfer given to all households below the poverty line. In addition, the overall poverty gap reduces from 5.38 to 4.12 by giving transfer payments only to all paddy households even though both interventions are removed. Finally, this study suggests that removal of distortions especially the elimination of trade protection will affect favorably for both consumers and poor small scale rice producers. Conversely, this will lead to some negative consequences on the national rice production in the country.
Dynamical Classification of Trans-Neptunian Objects Detected by the Dark Energy Survey
Creators: name: Khain, T.
name: Becker, J. C.
name: Lin, Hsing Wen
name: Gerdes, D. W.
name: Adams, F. C.
name: Bernardinelli, P.
name: Bernstein, G. M.
name: Franson, K.
name: Markwardt, L.
name: Hamilton, S.
name: Napier, K.
name: Sako, M.
name: Abbott, T. M. C.
name: Avila, S.
name: Bertin, E.
name: Brooks, D.
name: Buckley-Geer, E.
name: Burke, D. L.
name: Rosell, A. Carnero
name: Kind, M. Carrasco
name: Carretero, J.
name: da Costa, L. N.
name: De Vicente, J.
name: Desai, S.
name: Diehl, H. T.
name: Doel, P.
name: Flaugher, B.
name: Frieman, J.
name: Garcia-Bellido, J.
name: Gaztanaga, E.
name: Gruen, D.
name: Gruendl, R. A.
name: Gschwend, J.
name: Gutierrez, G.
name: Hollowood, D. L.
name: Honscheid, K.
name: James, D. J.
name: Kuropatkin, N.
name: Maia, M. A. G.
name: Marshall, J. L.
name: Menanteau, F.
name: Miller, C. J.
name: Miquel, R.
name: Plazas, A. A.
name: Sanchez, E.
name: Scarpine, V.
name: Schubnell, M.
name: Sevilla-Noarbe, I.
name: Smith, M.
name: Sobreira, F.
name: Suchyta, E.
name: Swanson, M. E. C.
name: Tarle, G.
name: Walker, A. R.
name: Wester, W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The outer Solar System contains a large number of small bodies (known as trans-Neptunian objects or TNOs) that exhibit diverse types of dynamical behavior. The classification of bodies in this distant region into dynamical classes -- sub-populations that experience similar orbital evolution -- aids in our understanding of the structure and formation of the Solar System. In this work, we propose an updated dynamical classification scheme for the outer Solar System. This approach includes the construction of a new (automated) method for identifying mean-motion resonances. We apply this algorithm to the current dataset of TNOs observed by the Dark Energy Survey (DES) and present a working classification for all of the DES TNOs detected to date. Our classification scheme yields 1 inner centaur, 19 outer centaurs, 21 scattering disk objects, 47 detached TNOs, 48 securely resonant objects, 7 resonant candidates, and 97 classical belt objects. Among the scattering and detached objects, we detect 8 TNOs with semi-major axes greater than 150 AU.
description: accepted to AJ
Revenue Sharing in Green Cluster Supply Chain of Highland Arabica Coffee
Creators: name: Panmanee, Chanita
name: Wiboonpongse, Aree
name: Chaovanapoonphol, Yaovarate
name: Huang, Wan-Tran
name: Panmanee, Chanita
name: Wiboonpongse, Aree
name: Chaovanapoonphol, Yaovarate
name: Huang, Wan-Tran
Publisher: name: Unknown
Year: 2017
Subjects: subject: Crop Production/Industries
subject: Arabica coffee
subject: Green cluster supply chain
subject: Revenue sharing

description: It was the advances in understanding the collaboration between the farmers and the other stakeholders in supply chain that resulted in the development of the concept of green cluster supply chain (GCSC), which is the program letting the farmers do environmental friendly activities, cooperate and share the information of their coffee products, and set the revenue sharing contracts between the farmer clusters, the assemblers, and the processor. This research aims to explore the optimum revenue sharing contracts prototype that leads to the rise of farmers’ income. The samples of 29 and 27 farmers in Pamiang and Pang Ma-O areas who are willing to participate in GCSC were selected by using the purposive sampling method, two assembler, and only one processor. The scenario and adjustment of the parameters techniques are used for determining the revenue sharing between non-GCSC and GCSC models and investigating the best results. The results show that the decision of contracts selection depends on the goal of supply chain agreements. If the goal is the profit maximization of the farmers, then the appropriate contracts of revenue sharing associates with the share of revenue are about 10% from the RPF to the assemblers and 10% from the assemblers to the farmer clusters. In another view, if the goal is the profit maximization of the supply chain, then the suitable form is only the share of revenue about 10% from the assemblers to the farmer clusters. The findings of this research bring about the optimum GCSC prototype in the selected highland areas leading to the rise of farmers’ income and well-being. Moreover, the relevant agencies can bring this prototype to impose the policy of highland development and expand to the other areas.
Energy_Demand_Forecast_for_The_Industria (2).pdf
Creators: name: Okachi, Simeon
name: James Akpama, Eko
name: lehiowo, Obojor
name: Ijeoma Ene, Eunice
name: Ededet Orok, Milliscent
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 400803
subject: Electrical energy generation (incl. renewables, excl. photovoltaics)
classificationCode: 400805
subject: Electrical energy transmission, networks and systems
classificationCode: 400804
subject: Electrical energy storage

description: The supply of efficient and affordable electricity is a panecea to Foster Rapid Growth and Development in any give country. For Nigeria to make a remarkable progress in infrastructure development and to grow her economy, Industrialization is none negotiable. The driving force of industrial revolution in Nigeria is anchored on viable power supply. So it's the aim of this research to estimate how much power is needed to effectively drive the nations industrial sector for national growth.
Proxy Means Testing Vulnerability to Measurement Errors?
Creators: name: Gazeaud, Jules
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Plant Biology

description: Proxy Means Testing (PMT) is a popular method to target the poor in developing countries. PMT usually relies on survey-based consumption data and assumes random measurement errors – an assumption that has been challenged by recent literature. Using a survey experiment conducted in Tanzania, this paper brings causal evidence on the impact of non-random errors on PMT performances. Results show that non-random errors bias the coefficients from PMT models, resulting in a 5 to 27 per cent reduction in PMT predictive performances. Moreover, non-random errors induce a 10 to 34 per cent increase in the incidence of targeting errors when poverty is defined in absolute terms. More reassuringly, impacts on the ranking of households are smaller and essentially non-significant. Taken together, these results indicate that PMT performances are quite vulnerable to non-random errors when the objective is to target absolutely poor households, but remain largely unaffected when the objective is to target a fixed share of the population.
Effects of Household Shocks on Risk Preferences and Loss Aversion: Evidence from Upland Smallholders of South East Asia
Creators: name: Sagemüller, Frederik
name: Mußhoff, Oliver
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Neuroscience
subject: Pharmacology
subject: Biotechnology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Avoiding risk in financial decisions is credited to be a key contributor to persistent poverty and poverty traps. In spite of this, the methods used to measure behaviour under risk rarely reflect an adequate representation of the lives of smallholders in low income economies. We estimate risk preferences and their determinants by including two key aspects: aversion to losses and exposure to long term risk and vulnerability. We examine risk preferences of 93 smallholders in Cambodia and 91 smallholders in Lao PDR with an incentivised lottery design under the framework of Expected Utility Theory (EUT), Rank Dependent Utility Theory (RDU) and Cumulative Prospect Theory (CPT). We find that CPT best explains our data, but parameter values vary to those most commonly found in the literature. We report that the experience of household shocks have a significant effect on choice behaviour in the loss domain, even when we control for a large set of socio-economic and demographic variables.
Analytic properties of the Landau gauge gluon and quark propagators
Creators: name: Alkofer, R.
name: Detmold, W.
name: Fischer, C. S.
name: Maris, P.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We explore the analytic structure of the gluon and quark propagators of Landau gauge QCD from numerical solutions of the coupled system of renormalized Dyson--Schwinger equations and from fits to lattice data. We find sizable negative norm contributions in the transverse gluon propagator indicating the absence of the transverse gluon from the physical spectrum. A simple analytic structure for the gluon propagator is proposed. For the quark propagator we find evidence for a mass-like singularity on the real timelike momentum axis, with a mass of 350 to 500 MeV. Within the employed Green's functions approach we identify a crucial term in the quark-gluon vertex that leads to a positive definite Schwinger function for the quark propagator.
description: 42 pages, 16 figures, revtex; version to be published in Phys Rev D
Additional file 3 of Vascular miR-181b controls tissue factor-dependent thrombogenicity and inflammation in type 2 diabetes
Creators: name: Witkowski, Marco
name: Witkowski, Mario
name: Saffarzadeh, Mona
name: Friebel, Julian
name: Termeh Tabaraie
name: Bao, Loc Ta
name: Aritra Chakraborty
name: Dörner, Andrea
name: Stratmann, Bernd
name: Tschoepe, Diethelm
name: Winter, Samantha
name: Krueger, Andreas
name: Ruf, Wolfram
name: Landmesser, Ulf
name: Rauch, Ursula
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 3: Figure S2. miR-181b reduces KPNA4 expression in HMEC-1. KPNA4 mRNA (A) and protein (B) expression in HMEC-1 transfected with a control mimic or miR-181b. n ≥ 3, p-value by student’s t test.
Uniform Lower Bound for Intersection Numbers of $ψ$-Classes
Creators: name: Delecroix, Vincent
name: Goujard, Élise
name: Zograf, Peter
name: Zorich, Anton
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We approximate intersection numbers $\big\langle ψ_1^{d_1}\cdots ψ_n^{d_n}\big\rangle_{g,n}$ on Deligne-Mumford's moduli space $\overline{\mathcal M}_{g,n}$ of genus $g$ stable complex curves with $n$ marked points by certain closed-form expressions in $d_1,\dots,d_n$. Conjecturally, these approximations become asymptotically exact uniformly in $d_i$ when $g\to\infty$ and $n$ remains bounded or grows slowly. In this note we prove a lower bound for the intersection numbers in terms of the above-mentioned approximatingexpressions multiplied by an explicit factor $λ(g,n)$, which tends to $1$ when $g\to\infty$ and $d_1+\dots+d_{n-2}=o(g)$.
description: Dedicated to D.B. Fuchs on the occasion of his 80th birthday
$w$-function of the KdV hierarchy
Creators: name: Buchstaber, V. M.
name: Shorina, S. Yu.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: In this paper we construct a family of commuting multidimensional differential operators of order 3, which is closely related to the KdV hierarchy. We find a common eigenfunction of this family and an algebraic relation between these operators. Using these operators we associate a hyperelliptic curve to any solution of the stationary KdV equation. A basic generating function of the solutions of stationary KdV equation is introduced as a special polarization of the equation of the hyperelliptic curve. We also define and discuss the notion of a $w$-function of a solution of the stationary $g$-KdV equation.
Dynamical behavior of a nondiffusive scheme for the advection equation
Creators: name: Aguillon, Nina
name: Guiheneuf, Pierre-Antoine
Publisher: name: arXiv
Year: 2019
Subjects: subject: Dynamical Systems (math.DS)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We study the long time behaviour of a dynamical system strongly linked to the anti-diffusive scheme of Després and Lagoutiere for the $1$-dimensional transport equation. This scheme is nondiffusive in the sens that discontinuities are not smoothened out through time. Numerical simulations indicates that the scheme error's is uniformly bounded with time. We prove that this scheme is overcompressive when the Courant--Friedrichs--Levy number is 1/2: when the initial data is nondecreasing, the approximate solution becomes a Heaviside function. In a special case, we also understand how plateaus are formed in the solution and their stability, a distinctive feature of the Després and Lagoutiere scheme.
Next-to-leading order QCD corrections to A_TT for prompt photon production
Creators: name: Mukherjee, A.
name: Stratmann, M.
name: Vogelsang, W.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a next-to-leading order QCD calculation of the cross section for isolated large-p_T prompt photon production in collisions of transversely polarized protons. We devise a simple method of dealing with the phase space integrals in dimensional regularization in the presence of the cos(2 phi) azimuthal-angular dependence occurring for transverse polarization. Our results allow to calculate the double-spin asymmetry A_TT for this process at next-to-leading order accuracy, which may be used at BNL-RHIC to measure the transversity parton distributions of the proton.
description: 19 pages, LaTeX, 2 figures as eps files
Peat Policy and Its Implications on Value Chains of Indonesian Palm Oil
Creators: name: Setiawan, Budi Indra
name: Faroby, Falatehan
name: Setiawan, Budi Indra
name: Faroby, Falatehan
Publisher: name: Unknown
Year: 2017
Subjects: subject: International Development
subject: Peatland
subject: peat policy
subject: palm oil
subject: value chain

description: Palm oil and its derivative products are strategic commodities that play important role in the economic development in Indonesia which along with Malaysia are the main exporters to the global markets. Global well as national demands on crude palm oil are increasing not only as food but also as raw material for biodiesel. To increase production, the extensification of oil palm plantation in Indonesia is still preferable choice. Since there are limited fertile mineral soils, the marginal lands such as peatlands have become targeted areas to open new plantations. Due to reoccurring fire and haze problems while attempting to restore degraded peatlands, the government has issued By Law No 57 in 2016 to protect and manage Peat Ecosystem (Peat Policy). This peat policy which mainly aims at preventing environmental degradation would to some extent reduce planting areas and give implications to the production stretching to the supply and value chain of palm oil and its derivative products. This study assessed how the peat policy affected the planting areas, production, economic value, growers especially the farmers including to the export quantity and value. Herewith, we applied numerical approaches followed with simulation subjected to set-up scenarios. Compared to 2015 figures, the peat policy would reduce palm oil plantation area 10–18% and production 12–15% with the potential implications to the reduction of: 1) economic values 12–15%, 2) number of farmers 12–15%, 3) exported palm oil 21–24%, 4 export value 22–24% and 4) cost of fresh fruit bunch 6–8%. These reductions are so severe to the economic development of the countries and threatening the welfare of the farmers. Accordingly, the government and practitioners should settle on policy choices conducive toward the sustainable development of oil palm plantation in the peatlands, i.e., on how to improve integrated spatial planning, environmentally sound peatland management, intensification program to increase productivity and environment monitoring system.
-Waste +Substrate : Designing the Informal Waste Landscape
Creators: name: Tan, Calvin
Publisher: name: The University of British Columbia
Year: 2020

description: This thesis explores the role of landscape architecture in spatializing the dematerialization and contamination of informal waste landscapes that have emerged in Accra due to global consumption. As a design response, it speculates how waste and excess can become a driver in creating an alternative future that fosters new social, ecological, and economic interactions while addressing the complexities and challenges that have arisen due to these landscapes. Waste and excess give rise to new landscapes. To confront them, we can restructure our preconceptions and negative connotations of these wastelands and its associated actors that have been rendered invisible and excluded. The proposed design critiques the binary of the contaminated landscape and remediated landscape and alternatively seeks to find a co-existence of the two by drawing out the potential reciprocity between them. As a result, a tension is created between the aesthetics of remediation and containment. There is both beauty and ugliness in the process of regeneration and decomposition.
Detection and Characterization of Quasi-Periodic Oscillations in Seyfert Galaxy NGC 4151
Creators: name: Yongkang, Yan
name: Peng, Zhang
name: Zhou, Lu
name: Tong, Bao
name: Dejian, Liu
name: Gaochao, Liu
name: Qingzhong, Liu
name: Jingzhi, Yan
name: Xiangyun, Zeng
Publisher: name: arXiv
Year: 2025
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: This study aims to detect and characterize quasi-periodic oscillations (QPOs) signals in X-ray observations of NGC 4151. We employed the Weighted Wavelet Z-transform (WWZ) and Lomb-Scargle periodogram (LSP) methods for our analysis. QPO signals with frequencies of 5.91 $\times 10^{-4}$ Hz and 5.68 $\times 10^{-4}$ Hz were detected in observations conducted by Chandra (ObsID 7830) in 2007 and XMM-Newton (ObsID 0761670301) in 2015, with confidence levels of 3.7 $σ$ and 3.3 $σ$, respectively. These signals are the first to be independently observed by two different telescopes over an eight-year period with closely matched frequencies. Most notably, the combined confidence level of the QPO signals from these two independent observations reaches an exceptional 5.2 $σ$, which is rare in astrophysical research and significantly strengthens our conviction in the authenticity of these signals. A detailed analysis of the observational data suggests that these QPO signals may be correlated with the properties of the central supermassive black hole. Additionally, spectral analysis of the observational data revealed no significant spectral differences between the QPO and non-QPO segments. These findings provide new insights into the X-ray variability mechanisms of the central black hole in NGC 4151 and offer a novel perspective for black hole mass estimation.
description: 8 pages, 4 figures
Regional Migration, Insurance and Economic Shocks: Evidence from Nicaragua
Creators: name: Millán, Teresa Molina
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Cell Biology
subject: Sociology
subject: FOS: Sociology
subject: Ecology
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: In developing countries most migrants are internal migrants, yet there is limited evidence to show whether internal migrants represent a source of insurance to the original household or vice versa. I test the insurance role of transfers sent and received by young migrants by estimating the causal impact of income shocks in the migrants’ locations of origin and destination on inter-household transfers. Rainfall shocks are found to lead to changes in income but not in consumption, indicating that households are able to smooth consumption. I find that young migrants provide insurance to their original households and that the level of insurance increases when migrants and households are exposed to low correlated rainfall shocks. This article shows evidence of bilateral insurance between rural migrants and their original households when the differences in the intensity of the shocks increase. These results provide new evidence of risk-sharing strategies among households geographically spread around a country.
Demand Elasticities for Food in Nigeria the Case of Meat in IMO State
Creators: name: Njoku, J.E.
name: Nweke, F.I.
name: Njoku, J.E.
name: Nweke, F.I.
Publisher: name: Unknown
Year: 1990
Subjects: Demand and Price Analysis

description: This paper reports the results of budget survey of urban and rural household meat consumption in selected urban and rural areas of Imo State, Nigeria conducted between November 1984 and January 1986. The primary objective was to describe household meat consumption pattern and determine the nature, magnituds and direction of income, own price and cross price elasticities of demand for meat. A total of 50 households were interviewed repeatedly on bi-weekly basis for the 14 months duration of data collection using structured questionnaires. Wide disparities were found to exist between urban and rural house­hold meat consumption due primarily to wide disparities between urban and rural household incomes. Expenditure(income) elasticities of de­mand were positive and greater than unity for all households and for low and medium income households, indicating that for these house­holds demand for meat was elastic with respect to income. For the high income households, expenditure elasticity was below unity, indicating inelastic demand with respect to income. Household income was the most significant determinant of meat consumption. The policy implica­tions of these findings are discussed.
D/H in a new Lyman limit quasar absorption system at z=3.256 towards PKS1937-1009
Creators: name: Crighton, N. H. M.
name: Webb, J. K.
name: Ortiz-Gil, A.
name: Fernandez-Soto, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have identified a new Lyman limit absorption system towards PKS1937-1009, with log N(HI)=18.25 +/- 0.02 at z=3.256. It is suitable for measuring D/H, and we find a 68.3% confidence range for D/H of 1.6^{+0.25}_{-0.30} \times 10^{-5}, and a 95.4% range of 1.6^{+0.5}_{-0.4} \times 10^{-5}. The metallicity of the cloud where D/H was measured is low, [Si/H] = -2.0 +/- 0.5. At these metallicities we expect that D/H will be close to the primordial value. Our D/H disagrees at a level of 99.4% with the predicted D/H using the baryon density calculated from the cosmic background radiation measured by WMAP, 2.60^{+0.19}_{-0.17} \times 10^{-5}. Our result also exacerbates the scatter in D/H values around the mean primordial D/H.
description: 13 pages, accepted by MNRAS. Version 2: corrected typos. Version 3: Final accepted version. Includes new section comparing this result to other QSO D/H results
Bimodal probability density characterizes the elastic behavior of a semiflexible polymer in 2D under compression
Creators: name: Kurzthaler, Christina
name: Franosch, Thomas
Publisher: name: arXiv
Year: 2019
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We explore the elastic behavior of a wormlike chain under compression in terms of exact solutions for the associated probability densities. Strikingly, the probability density for the end-to-end distance projected along the applied force exhibits a bimodal shape in the vicinity of the critical Euler buckling force of an elastic rod, reminiscent of the smeared discontinuous phase transition of a finite system. These two modes reflect the almost stretched and the S-shaped configuration of a clamped polymer induced by the compression. Moreover, we find a bimodal shape of the probability density for the transverse fluctuations of the free end of a cantilevered polymer as fingerprint of its semiflexibility. In contrast to clamped polymers, free polymers display a circularly symmetric probability density and their distributions are identical for compression and stretching forces.
A Possible Proof Of The Riemann Hypothesis
Creators: name: KAPLAN, Yunus-Emre
Publisher: name: Zenodo
Year: 2024
Subjects: Riemann Hypothesis
Asymptotic Analysis
Prime Numbers
Imbricated Quadratic Equations
Integrals

description: In this paper, I present my approach to the Riemann Hypothesis, which potentially provides a proof of it.

I start by simplifying the equality Eta(s)=0 (which is equivalent to Zeta(s)=0) by expressing |Eta(s)|^2=0 as Re(Eeta(s))^2 + Im(Eta(s))^2 = 0, expressed with cosine and sine functions, then I use trigonometric identities to further break down the sum into a sum of squares purely relying on Re(s) and a double sum relying on both Re(s) and Im(s).

Using the bounded nature of the cosine function, I reformulate the equality as a problem of quadratic equations, to get rid of the dependence on Im(s) as well as the oscillations it induces,

I then consider Re(s) as a map a[n] = Re(s[n]) (n being the number of terms in Zeta(s)), rather than a fixed value (since we deal with infinity),

It has already been proved that for all the nontrivial zeros, their real part is in ]0,1[,

So, I then use integrals and asymptotic analysis to observe three cases of asymptotic behaviours:

when a[n] converges to a real number in ]0,1/2[

when a[n] converges to a real number in ]1/2,1[

when a[n] converges to 1/2 (where we distinguish some more cases)

Then I conclude that the only logically consistent case is when a[n] converges to 1/2.
Tuning Penta-Graphene Electronic Properties Through Engineered Line Defects
Creators: name: Santos, Ramiro Marcelo dos
name: de Sousa, Leonardo Evaristo
name: Galvão, Douglas Soares
name: Junior, Luiz Antonio Ribeiro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences
subject: I.6; G.3

description: Penta-graphene is a quasi-two-dimensional carbon allotrope consisting of a pentagonal lattice in which both sp2 and sp3-like carbons are present. Unlike graphene, penta-graphene exhibits a non-zero bandgap, which opens the possibility of its use in optoelectronic applications. However, as the observed bandgap is large, gap tuning strategies such as doping are required. In this work, density functional theory calculations are used to determine the effects of the different number of line defects of substitutional nitrogen or silicon atoms on the penta-graphene electronic behavior. Our results show that this doping can induce semiconductor, semimetallic, or metallic behavior depending on the doping atom and targeted hybridization (sp2 or $sp3-like carbons). In particular, we observed that nitrogen doping of sp2-like carbons atoms can produce a bandgap modulation between semimetallic and semiconductor behavior. These results show that engineering line defects can be an effective way to tune penta-graphene electronic behavior.
description: 8 pages and 7 figures
Biological Control of Rice Stem Borers: A Feasibility Study
Creators: name: Nickel, John L.
name: Nickel, John L.
Publisher: name: Unknown
Year: 1964
Subjects: Crop Production/Industries
Research Methods/ Statistical Methods

description: The introduction of foreign parasites and predators has resulted in a significant degree of sustained, self-perpetuating control of more than 100 insect pests over the world. In at least half of these cases, the degree of control has been great enough to render all other control practices unnecessary. Successful biological control has been achieved in many countries and over a broad range of geographic and climatic conditions. Those regions in which the greatest numbers of successes have been achieved are where a sustained effort has been made. Although the successes in the introduction of exotic agents for permanent biological control have been many, the failures have been more. Most failures probably resulted because ecological information was incomplete or ignored. The current trend is towards a more careful consideration of these factors before attempting introductions.
Poisson-Tweedie mixed-effects model: a flexible approach for the analysis of longitudinal RNA-seq data
Creators: name: Signorelli, Mirko
name: Spitali, Pietro
name: Tsonaka, Roula
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: Applications (stat.AP)
subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: We present a new modelling approach for longitudinal count data that is motivated by the increasing availability of longitudinal RNA-sequencing experiments. The distribution of RNA-seq counts typically exhibits overdispersion, zero-inflation and heavy tails; moreover, in longitudinal designs repeated measurements from the same subject are typically (positively) correlated. We propose a generalized linear mixed model based on the Poisson-Tweedie distribution that can flexibly handle each of the aforementioned features of longitudinal overdispersed counts. We develop a computational approach to accurately evaluate the likelihood of the proposed model and to perform maximum likelihood estimation. Our approach is implemented in the R package ptmixed, which can be freely downloaded from CRAN. We assess the performance of ptmixed on simulated data and we present an application to a dataset with longitudinal RNA-sequencing measurements from healthy and dystrophic mice. The applicability of the Poisson-Tweedie mixed-effects model is not restricted to longitudinal RNA-seq data, but it extends to any scenario where non-independent measurements of a discrete overdispersed response variable are available.
description: The final (published) version of the article can be downloaded for free (Open Access) from the editor's website (click on the DOI link below). Link to the R package ptmixed: https://cran.r-project.org/web/packages/ptmixed/index.html
Evidence of the Impact of Children’s Household Chores and Market Labour on Learning from School Census Data in Brazil
Creators: name: Kassouf, Ana L
name: Tiberti, Luca
name: Garcias, Marcos
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: This study analyzes the impact of children’s household chores and market labour on learning using Prova Brazil census data from 2007/2011, 2009/2013, 2011/2015 and 2013/2017. To do that, we created a large panel dataset with students in 5th and 9th Grades. A panel fixed effects model with an instrumental variable approach was applied to control for the endogeneity of child labour. Possible attrition bias was taken into account through inverse probability weights. The work performed by children either in the household, or in the labour market was detrimental to their academic performance. In the 2013/2017 panel, the largest impact was a reduction close to 12.3 per cent in Portuguese and more than 10 per cent in Mathematics test scores when children worked in both places labour market and household. Our results also indicate that household chores, which are often not counted in social statistics and not considered dangerous, should be included in policies designed to combat child labour.
RI-VIS D4.3 New Cooperations
Creators: name: Haley, Natalie
name: Dolan, John
name: Pieruschka, Roland
Publisher: name: Zenodo
Year: 2022

description: International collaboration activities of research infrastructures are rather diverse, with different goals or driven by different motivations. A survey among European research infrastructures showed that they have been very active in many collaborative partnerships across the globe. Limited time, resources, funding and, within the last years, COVID-19 have been the major barriers limiting further development of these collaborations. Further interaction with participants of the RI-VIS outreach events indicated that joint projects and interests complemented by personal contacts are important to stimulate cooperation. Research infrastructures may have an important role in stimulating new collaborations as well as ensuring long term sustainable interaction partnerships with dedicated agreements. A template Memorandum of Understanding is included as an appendix to this deliverable. The RI-VIS projects also tested a number of virtual tools important to facilitate matchmaking and stimulate cooperation and provides a number of resources for research infrastructures to use to help build and develop new international cooperations.
Spin states and phase separation in La_{1-x}Sr_{x}CoO_3 (x=0.15, 0.25, 0.35) films: optical, magneto-optical and magneto-transport studies
Creators: name: Loshkareva, N. N.
name: Gan'shina, E. A.
name: Belevtsev, B. I.
name: Sukhorukov, Yu. P.
name: Mostovshchikova, E. V.
name: Vinogradov, A. N.
name: Krasovitsky, V. B.
name: Chukanova, I. N.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Optical absorption and transverse Kerr effect spectra, resistivity and magnetoresistance of La$_{1-x}$Sr$_{x}$CoO$_3$ ($x=0.15, 0.25, 0.35$) films have been studied. The temperature dependencies of the optical and magneto-optical properties of the films exhibit features, which can be attributed to the transition of the Co$^{3+}$ ions from the low-spin state (S=0) to the intermediate-spin state (S=1) and to orbital ordering of the Co$^{3+}$ ions in the latter state. The evolution of the properties influenced by doping with Sr is interpreted on the basis of the phase separation model.
description: 22 pages, 10 figures, submitted to Rhys. Rev. B
Additional file 1 of Smartphone-based secondary prevention intervention for university students with unhealthy alcohol use identified by screening: study protocol of a parallel group randomized controlled trial
Creators: name: Bertholet, Nicolas
name: Schmutz, Elodie
name: Grazioli, Véronique
name: Faouzi, Mohamed
name: McNeely, Jennifer
name: Gmel, Gerhard
name: Jean-Bernard Daeppen
name: Cunningham, John
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1.SPIRIT 2013 Checklist: Recommended items to address in a clinical trial protocol and related documents.
Simulation of land use dynamics in Paragominas-PA: differences in spatial rules between smallholdings and agribusiness areas
Creators: name: Osis, Reinis
name: Laurent, François
name: Poccard-Chapuis, René
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: The aim of this paper is to present the results of the land use dynamic simulations in the municipality of Paragominas-PA. The simulation is based on models built from past land use data and spatial variables of the natural environment and infrastructure. Two spatial units were analyzed: the central area of commercial agricultural production and the area of settlements and smallholdings the east. The results show distinct spatial dynamics between the analyzed areas, among which we highlight the role of soil characteristics and, associated with the topography and the occupation history, are part of the context in which is defined rationality producers. Considering the transition from forest to pasture in the commercial farming area most often associated soils are sandy. This raises the following hypothesis: the deforestation that occurred in the period are related to livestock activities. Livestock favors access to water and low fertility sands does not affect production. On the other hand, the soybean expansion occurred preferentially on existing pastures and on clay soils (Belterra clay), reducing the availability of pastures on these soils. The relative importance of types of soil increases with time. In the area of settlements, the transition from forest to pasture and family crops occurred preferentially on the variegated clay. However, it is possible that the prevalence of this transition on this texture has been given due more to the history of occupation of this area. Historically the sandy valleys were the first to be occupied, and the continuity of the deforestation occurred toward the slopes dominated by variegated clay and plateaus with Belterra clay. These associations observed indicate that, within a wider context of social, economic and political factors, natural variable factors in space are important for the choice of managements in the properties, but they are done differently in the territory, and the best knowledge of these relationships are useful for territorial planning.
description: in Portuguese
A Possible Proof Of The Riemann Hypothesis
Creators: name: KAPLAN, Yunus-Emre
Publisher: name: Zenodo
Year: 2024
Subjects: Riemann Hypothesis
Asymptotic Analysis
Prime Numbers
Imbricated Quadratic Equations
Integrals
Zeta Function
Eta Function

description: In this paper, I present my approach to the Riemann Hypothesis, which potentially provides a proof of it.

I start by simplifying the equality Eta(s)=0 (which is implied by the nullness of the continued Zeta(s)) by expressing |Eta(s)|^2=0 as Re(Eta(s))^2 + Im(Eta(s))^2 = 0, expressed with cosine and sine functions, then I use trigonometric identities to further break down the sum into a sum of squares purely relying on Re(s) and a double sum relying on both Re(s) and Im(s).

Using the bounded nature of the cosine function, I reformulate the equality as a problem of quadratic equations, to get rid of the dependence on Im(s) as well as the oscillations it induces,

I then consider Re(s) as a map a[n] = Re(s[n]) (n being the number of terms in Zeta(s) or Eta(s)), rather than a fixed value (since we deal with infinity),

It has already been proved that for all the nontrivial zeros, their real part is in ]0,1[,

So, I then use integrals and asymptotic analysis to observe three cases of asymptotic behaviours:

when a[n] converges to a real number in ]0,1/2[

when a[n] converges to a real number in ]1/2,1[

when a[n] converges to 1/2 (where we distinguish some more cases)

Then I conclude that the only logically consistent case is when a[n] converges to 1/2.