cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Rainwater harvesting in India: some critical issues for basin planning and research
Creators: name: Kumar, M. Dinesh
name: Ghosh, Shantanu
name: Patel, Ankit
name: Singh, Om Prakash
name: Ravindranath, R.
name: Kumar, M. Dinesh
name: Ghosh, Shantanu
name: Patel, Ankit
name: Singh, Om Prakash
name: Ravindranath, R.
Publisher: name: Unknown
Year: 2006
Subjects: Resource /Energy Economics and Policy

description: Often, as a frantic response to problems of water scarcity and consequent hardships faced by both urban and communities, India has invested heavily in rainwater harvesting. Unlike investment in large water resource systems, these efforts, by and large, lack hydrological planning and sound economic analysis: research on the impact of local water harvesting/groundwater recharge activities in India is very sparse. This paper identifies sex critical issues in rainwater harvesting efforts in water-scarce regions of India. First: there is no emphasis on potential local supplies and the demand they have to cater for: local supply potential is low in most water scarce regions, a fact compounded by poor reliability, and demand far exceeds the supply potential. Second: there are complexities in the economic evaluation of RWH, due to lack of scientific data on inflows, runoff collection and storage efficiency, beneficiaries, value of the incremental benefits generated and scale considerations. With higher degrees of basin development, the marginal benefit from water harvesting at the basin level reduces, while marginal cost increases. Third: in many basins, there is a strong ‘trade-off’ between maximizing hydrological benefits and improving cost effectiveness. Fourth: many water-scarce basins are characterized by wide disparity in demand between upper catchments and lower catchments, so that there is a trade-off in maximizing benefits of upstream water harvesting with optimizing basin-wide benefits. Fifth: in many water-scarce basins, local water harvesting merely divides the hydrological benefits rather than augmenting them. Finally, poor integration between surface water and groundwater systems, and lack of inclusion of natural recharge, ultimately leads to reduction in potential for artificial recharge in hard rock areas.
Development of TMDL watershed implementation plan using Annualized AGNPS
Creators: name: Yuan, Yongping
name: Bingner, R.L.
name: Boydstun, J.
name: Yuan, Yongping
name: Bingner, R.L.
name: Boydstun, J.
Publisher: name: Unknown
Year: 2006
Subjects: Resource /Energy Economics and Policy

description: Section 319 of the amended Federal Clean Water Act requires states to outline management plans for impaired water bodies to address non-point source pollution. When determining the priority for conservation measures within a watershed* for non-point source pollution control, models are valuable tools that can provide clues as to where potential sources of water pollution may be and which problems can most easily be corrected. The USDA Annualized Agricultural Non-Point Source Pollution model (AnnAGNPS) is such a model, which has been developed to aid in the evaluation of watershed response to agricultural management practices. This paper presents the processes used for developing an implementation plan for Bayou LaFourche, one of the impaired sub-segments of Ouachita River Basin in northern Louisiana. In this study, the AnnAGNPS was used to simulate the amount of water and sediment produced from each user-specified computational area within the watershed and their contributions to the watershed outlet; AnnAGNPS was also applied to simulate the impact of alternative agricultural management options on the water quality. Through AnnAGNPS simulations, high sediment producing areas were identified and targeted for effective non-point source pollution and their impacts on water quality are also presented. Among these options, scenario G, which converts 25 percent of the highest eroding cropland in the watershed to grassland, would reduce sediment loads at the watershed outlet by 80 percent.
Status and management of the sea cucumber fishery of La Grande Terre, New Caledonia.
Creators: name: Purcell, Steven W.
name: Gossuin, Hugues
name: Agudo, Natacha N.
name: Purcell, Steven W.
name: Gossuin, Hugues
name: Agudo, Natacha N.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Resource /Energy Economics and Policy
subject: Echinoderm fisheries
subject: Surveys
subject: Fishery management
subject: Socioeconomic aspects
subject: Population density

description: From October 2006 to May 2008, The WorldFish Center coordinated a ZoNéCo project to provide support to the Southern and Northern Provinces for decisions about how best to manage the sea cucumber fishery around La Grande Terre. We collected data during underwater population surveys, questionnaire-based interviews with fishers and processors, and landing catch surveys. A core aim was to furnish the Provinces with ‘ballpark’ estimates of the abundance and density of commercially important sea cucumbers on 50 lagoon and barrier reefs. Analysis and synthesis of the ecological and sociological data provide the basis for informed recommendations for fisheries management. Counts of trochus and giant clams on the reefs allow us to also describe the general status of those resources. We propose 13 recommendations for management actions and fishery regulations and advocate an adaptive management approach. This multidisciplinary study should serve as a useful template for assessing other fisheries, and we provide a series of generic ‘lessons learnt’ to aid future programmes.
Multinational Technology Diffusion in Agriculture
Creators: name: King, John L.
name: King, John L.
Publisher: name: Unknown
Year: 2009
Subjects: Research and Development/Tech Change/Emerging Technologies

description: This paper presents data on international technology diffusion of agricultural biotechnology. Patent family data, which identify related intellectual property in different countries with the same owner, represents technology flows between countries. Technology flows occur mostly between developed countries, and are similar for different types of entities (private, non-profit and university, government) that seek patent protection abroad. Technology diffusion through patent families is a significant predictor of international trade flows, which is consistent with several different models of trade.
Medicine reminder to improve treatment compliance on geriatric patients with diabetic neuropathy at Sanglah Central Hospital, Bali-Indonesia
Creators: name: Jaya, Made Krisna Adi
Publisher: name: figshare
Year: 2020
Subjects: subject: 111503 Clinical Pharmacy and Pharmacy Practice
subject: FOS: Clinical medicine

description: Background: Geriatric patients are elderly patients who have memory impairment problems, which may have an impact on medication adherence. The aim of this study was to evaluate the effect of medicine reminder on the smartphone to increase the adherence of geriatric patients with type 2 diabetes mellitus.Method: This study used the Randomized Control Trial (RCT) method, where the subjects were divided into 2 groups: geriatric patients who were performing diabetic neuropathic pain therapy with the help of the Medicine Reminder (Group of Intervention) and without the aid of Medicine Reminder (Usual Care) Which are randomized using odd-even techniques. Patient therapy compliance is assessed by pill count.Results: Subjects who received medicine reminder intervention had significantly greater adherence than the control group (p <0.05). The RR value obtained is 2.38 with CI95% at intervals of 1.58-3.61.Conclusions: The medicine reminder application can improve geriatric patient therapy adherence with significant diabetic neuropathic pain.
Reversing the Null Limit of the Szekeres Metric
Creators: name: Hellaby, Charles
name: Svítek, Otakar
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The null limits of the Lemaitre-Tolman and Szekeres spacetimes are known to be the Vaidya and news-free Robinson-Trautman metrics. We generalise this result to the case of non-zero $Λ$, and then ask whether the reverse process is possible -- is there a systematic procedure to retrieve the timelike-dust metric from the null-dust case? We present such an algorithm for re-constructing both the metric and matter tensor components of the timelike-dust manifold. This undertaking has elucidated the null limit process, highlighted which quantities approach unity or zero, and necessitated a careful discussion of how the functional dependencies are managed by the transformations and substitutions used.
description: LaTeX, 17pp, no figures, includes referee and proofreader amendments, to appear in CQG
Cooperative Meat Packing, lessons learned from Sterling Colorado Beef Company
Creators: name: Ward, Clement E.
name: Ward, Clement E.
Publisher: name: Unknown
Year: 1981
Subjects: subject: Agribusiness
subject: Livestock Production/Industries
subject: Cooperative
subject: meatpacking
subject: vertical integration
subject: cattle marketing
subject: cattle procurement
subject: cattle pricing
subject: beef marketing

description: Integration into meatpacking is a marketing alternative for livestock producers. For those considering such a step, Sterling Colorado Beef Co. provides a valuable learning experience. Feeders willing to commit capital, cattle, and time established the cooperative. Members said primary benefits were having a guaranteed market outlet and receiving a fair market price, rather than receiving a higher price or obtaining additional returns from meatpacking. Members attributed the cooperative's success to competent management and strong member management relations. The major problems encountered involved issues of environmental protection and lack of commitment by some members.
SAFETY COMPARISON BETWEEN AMITRIPTYLINE VERSUS GABAPENTIN ON NEUROPATHIC PAIN THERAPY IN GERIATRIC WITH TYPE II DIABETES MELLITUS
Creators: name: Jaya, Made Krisna Adi
Publisher: name: figshare
Year: 2020
Subjects: subject: 111503 Clinical Pharmacy and Pharmacy Practice
subject: FOS: Clinical medicine

description: Background: Neuropathy in diabetes mellitus is a disorder that occurs in the peripheral nervoussystem. Diabetic neuropathy is more prevalent in elderly (44%) compared to adult (24%). The mostcommonly used agent in diabetic neuropathy are Amitriptyline and Gabapentin, mostly to treat theneuropathic pain. However, there were variations in the results of the studies that have been donerelated to safety between both drugs. Thus, further research is needed to confirm the safety of bothdrugs in diabetic neuropathy treatment especially in geriatrics patients. Objective: The aim of thisstudy was to compare the safety of Amitriptyline versus Gabapentin administration for diabeticneuropathic pain in geriatric. Methods: A prospective cohort study involving 70 elderlies wereobserved during 4 weeks. The outcome targets were incidence of side effect and comparisonincidence of side effect between both drugs. Non-parametric Mann Whitney U, Chi-Square, andFisher’s Exact test were used to analyze the outcome. Result: Most side effects have appeared in thegroup Amitriptyline is a dry mouth followed by sedation / drowsiness, fatigue, dizziness, andconstipation. In the group of Gabapentin, the incidence of adverse events that most often arises issedation (sleepiness) followed by dizziness, dry mouth, and fatigue. Low doses administrationshowed that Amitriptyline has significantly greater adverse effects (p < 0.05) compared withGabapentin. However, no significant differences were found in therapeutic dose (p > 0.05).Conclusion: The incidence of adverse events was more common in geriatric patients receivingAmitriptyline compared to Gabapentin.
Exporting: an avenue for dairy cooperatives
Creators: name: Spatz, Karen J.
name: Brainich, Eric
name: Spatz, Karen J.
name: Brainich, Eric
Publisher: name: Unknown
Year: 1990
Subjects: subject: Agribusiness
subject: Livestock Production/Industries
subject: Cooperatives
subject: dairy exports
subject: cooperative exports
subject: dairy
subject: dairy cooperatives

description: One avenue of growth for U.S. dairy cooperatives is exporting. Long- term market development is one ingredient for success in international sales. Given possible trade liberalization, cooperatives should evaluate their position in the global marketplace and develop a plan to ensure growth and stability for members. The first part of this report evaluates world dairy market conditions. It looks at trends in world trade and cost of production and policies of major milk-producing countries. Various marketing organizations and practices such as joint ventures could be employed to facilitate exports. A description of the marketing strategies used by the New Zealand Dairy Board illustrates how these practices have been utilized for a successful international marketing organization.
Major farm characteristics and co-op use
Creators: name: Wadsworth, James J.
name: Wadsworth, James J.
Publisher: name: Unknown
Year: 1990
Subjects: subject: Agribusiness
subject: Cooperatives
subject: farmers
subject: co-op use
subject: membership
subject: marketing
subject: purchasing
subject: logit regression

description: This report describes relationships between major farm characteristics and co-op use and membership. Analyses were based on multivariate logit regression. Statistically significant relationships were found between farm size and farm location and co-op use but relationships varied greatly by farm type and type of use activity. No statistically significant relationship was found between co-op use and operator age. Statistically significant relationships were found between co-op membership and farm size, operator age, and farm location. These relationships varied also by farm type. Data for the study are for 1986 and were obtained from surveys by National Agricultural Statistics Service, U.S. Department of Agriculture.
Auxiliary-field quantum Monte Carlo study of TiO and MnO molecules
Creators: name: Al-Saidi, W. A.
name: Krakauer, Henry
name: Zhang, Shiwei
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Calculations of the binding energy of the transition metal oxide molecules TiO and MnO are presented, using a recently developed phaseless auxiliary field quantum Monte Carlo approach. This method maps the interacting many-body problem onto a linear combination of non-interacting problems by a complex Hubbard-Stratonovich transformation, and controls the phase/sign problem with a phaseless approximation relying on a trial wave function. It employs random walks in Slater determinant space to project the ground state of the system, and allows use of much of the same machinery as in standard density functional theory calculations, such as planewave basis and non-local pseudopotentials. The calculations used a single Slater determinant trial wave function obtained from a density functional calculation, with no further optimization. The calculated binding energies are in good agreement with experiment and with recent diffusion Monte Carlo results. Together with previous results for sp-bonded systems, the present study indicates that the phaseless auxiliary field method is a robust and promising approach for the study of correlation effects in real materials.
A niche marketing guide for lamb cooperatives
Creators: name: Kazmierczak, Tamra Kirkpatrick
name: Bell, James B.
name: Kazmierczak, Tamra Kirkpatrick
name: Bell, James B.
Publisher: name: Unknown
Year: 1995
Subjects: subject: Agribusiness
subject: Livestock Production/Industries
subject: Cooperatives
subject: lamb
subject: niche marketing
subject: marketing programs

description: The two types of niche markets targeted by lamb marketing cooperatives are described in this guide. The first type includes specialty middlemen outlets that cooperatives used to market lamb to specialized niches within the traditional meat marketing system of retail food stores, restaurants, food service outlets, and specialty distributors. The second type includes those outlets that cooperatives used to market lamb directly to the consumer, such as freezer markets, farmers' markets, mobile markets, and mail order sales. This guide also describes the advertising, promotional, and other marketing programs used by cooperatives to target these markets. Finally the competition, product differentiation, capital requirements, market development, management, processing, changing goals, and member commitment challenges faced by these cooperatives are briefly discussed.
Momentum dependence of the N to Delta transition form factors
Creators: name: Alexandrou, C.
name: de Forcrand, Ph.
name: Neff, H.
name: Negele, J. W.
name: Schroers, W.
name: Tsapalis, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a new method to determine the momentum dependence of the N to Delta transition form factors and demonstrate its effectiveness in the quenched theory at $β=6.0$ on a $32^3 \times 64$ lattice. We address a number of technical issues such as the optimal combination of matrix elements and the simultaneous overconstrained analysis of all lattice vector momenta contributing to a given momentum transfer squared, $Q^2$.
description: Talk presented at Lattice 2004 (spectrum), Fermilab, 21-26 Jun. 2004. 3 pages, 3 figures. One typo in phenomenological Ansatz corrected
A Spatial Equilibrium Model of the Impact of Bio-Fuels Energy Policy on Grain Transportation Flows
Creators: name: Ahmedov, Zafarbek
name: Power, Gabriel J.
name: Vedenov, Dmitry V.
name: Fuller, Stephen W.
name: McCarl, Bruce A.
name: Vadali, Sharada
name: Ahmedov, Zafarbek
name: Power, Gabriel J.
name: Vedenov, Dmitry V.
name: Fuller, Stephen W.
name: McCarl, Bruce A.
name: Vadali, Sharada
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Resource /Energy Economics and Policy
subject: ethanol
subject: biodiesel
subject: spatial equilibrium
subject: quadratic programming

description: Traffic flows in the U.S. have been affected by the substantial increase and, as of January 2009, decrease in biofuel production and use. This paper considers a framework to study the effect on grain transportation flows of the 2005 Energy Act and subsequent legislation, which mandated higher production levels of biofuels, e.g. ethanol and biodiesels. Future research will incorporate changes due to the recent economic slowdown.
Open Pharma status update: April–June 2020
Creators: name: Macdonald, Steph
name: Sabir, Sarah
name: Koder, Tim
name: Farrow, Paul
Publisher: name: Open Pharma
Year: 2020
Subjects: Science Policy
Health Care

description: The Open Pharma team have been very busy during the second quarter of 2020, with our first virtual roundtable meeting and three poster presentations and two roundtables at the virtual 16th Annual Meeting of ISMPP.
Find out more about all our recent activities in our quarterly status update.
High frequency bandwidth cutting force measurements in milling using the spindle integrated force sensor system
Creators: name: Park, Simon S.
Publisher: name: University of British Columbia
Year: 2009

description: The accurate measurement of forces at the tool tip is required for calibration of cutting force coefficients, adaptive control of maximum cutting forces, detection of tool failure, and monitoring of the force history applied to a workpiece during production. However, the majority of the present sensor systems are not effective due to low frequency bandwidths, limited workpiece size, wiring complexities, and susceptibility to harsh machining environments. To overcome the limitations, the Spindle Integrated Force Sensor (SIFS) system is developed, which can be used in production machines to measure cutting forces by integrating piezoelectric force sensors to the stationary spindle housing. Since the sensors are part of the spindle, the structural dynamics of the spindle assembly directly affect the accuracy and bandwidth of the force measurement. The thesis presents a systematic methodology to compensate the distortions caused by structural dynamic modes of the spindle and tool system. The structural dynamic model between the cutting forces acting on the tool tip and the measured forces at the spindle housing is identified. A disturbance Kalman Filter is designed to remove the influence of structural modes on the force measurements. The frequency bandwidth is increased from 350 Hz to 1000 Hz by compensating the first three dominant structural modes of the spindle with the proposed sensing and the signal processing method. In addition, the mathematical coupling of Frequency Response Functions (FRFs) of the spindle and arbitrary cutting tool dynamics is proposed and verified using the Receptance Coupling (RC) method with the identification of the joint dynamics to automate the dynamic compensation regardless of end mills. Based on the reconstructed cutting force measurements from the spindle integrated sensors, the adaptive control scheme is used to maximize productivity by optimizing the feed rate of the CNC machine, and the chatter and tool breakage detections are performed to monitor the milling processes.
Wine Argentinean Export Chain: A Case Study in the UK Market
Creators: name: Cetrangolo, Hugo
name: Briz, Julian
name: Cetrangolo, Hugo
name: Briz, Julian
Publisher: name: Unknown
Year: 2008
Subjects: Agribusiness
Agricultural and Food Policy
Farm Management
Food Consumption/Nutrition/Food Safety
Industrial Organization

description: International wine market is becoming one of the more dynamic in beverages sector. This paper is a summary of the research developed during 2004-2006 at the UPM with Argentinean exporters. The selection of UK market was due to the high degree of competition between international wines: European, American, Australian and others. Secondary information was collected from EU and Argentina publication and data bases. Primary information was obtained through face to face interviews with the main stakeholders and wine exporter entrepreneurs. UK wine market is one of the more competitive in the world and the main destinations of Argentinean exports. The presentation describes the strengths and weaknesses of the more significant wine exporters with a SWOT matrix analysis. Argentina has comparative advantages in wine production but the main problem is the wine network exporting performance. The challenge is how to design adequate strategies, involving public and private national resources and get adequate quota market in the coming future. Some specific recommendations are related to: Firms and country commercial brands, relationship exporters-UK retailers, trade brands shared by producers and commercial agents, promotion and publicity of Argentinean wines in UK. Other scenarios of future development are the improvement of firm strategic alliances, rising added value in the wine chain for exporters and communication programs with UK society.
Importance and Limits of the Cost-Benefit Analysis for GMOs Regulation
Creators: name: Charlier, Christophe
name: Valceschini, Egizio
name: Charlier, Christophe
name: Valceschini, Egizio
Publisher: name: Unknown
Year: 2008
Subjects: Agribusiness
Agricultural and Food Policy
Farm Management
Food Consumption/Nutrition/Food Safety
Industrial Organization

description: New technologies and innovations suspected to affect environment or public health need to be regulated. Scientific risk assessment is considered as a key element for the regulation. Its role is reinforced when the regulation has the potential of constraining the international trade. The Sanitary and Phytosanitary Agreement of the WTO dealing with this kind of issues gives primacy to scientific risk assessment. Interesting situations arise with small risks that is to say situations where the probability of damage is tiny and/or expected damages are very small. If risk assessment is the only scientific element considered, the mere presence of risk – even small - should give reason for regulation. Does it rationalize the public decision for all that? If the social benefits associated with the blocked activity are consequent accepting the risk could be worthwhile. Recent works from the economic literature have shown that in order to get a good ‘risk governance’ cost-benefit analysis should be considered together with risk assessment (Bureau et al. 1998, Turvey and Mojduszka 2005). The aim of cost-benefit analysis is indeed to help public decision making. It consists in a set of methods that enables to evaluate the relevance of a regulation, comparing it with other possible options (from other types of regulation to the absence of any regulation). For that purpose cost-benefit analysis aims at estimating a monetary valuation, on the one hand, for environmental (or public health) degradation and, on the other hand, for the expected benefits implied by environmental conservation and technologies’ development.
Folleto Noche Europea de los Investigadores 2023 - ¿Qué ha pasado después del COVID?
Creators: name: Choji, Thamyres T.
name: Salvador-Ruiz, Andres J.
name: Dueñas, María
name: Moral-Munoz, Jose A.
Publisher: name: Zenodo
Year: 2024
Subjects: COVIDReApp
mHealth
mobile health
exercise
physical activity

description: Folleto distribuido durante la Noche Europea de los Investigadores 2023, celebrado en la ciudad de Jerez y gestionado por la Universidad de Cádiz el 29 de septiembre de 2023.
Analysis, Design and Implementation of Biodiesel Projects in Brazil
Creators: name: Da Silva Junior, Aziz Galvao
name: Perez, Ronaldo
name: De Oliveira, Rodolfo Osorio
name: Da Silva Junior, Aziz Galvao
name: Perez, Ronaldo
name: De Oliveira, Rodolfo Osorio
Publisher: name: Unknown
Year: 2008
Subjects: Agribusiness
Agricultural and Food Policy
Farm Management
Food Consumption/Nutrition/Food Safety
Industrial Organization

description: During the oil crisis of the seventies, Brazil has developed a successful program for gasoline substitution by ethanol (Proálcool). Nowadays the biomass accounts for 27% of total national energy consumed in Brazil and the ethanol participates with 40% of the total national fuel consumption of Otto cycle vehicles. In 2004, the National Program for the Production and Use of Biodiesel (Biodiesel Program) was launched. One priority of the Biodiesel Program is the inclusion of family agriculture and smallholders into the production chain. The Federal University of Viçosa (UFV) has developed a software for the analysis of biodiesel projects with the participation of family agriculture. Results of production chain analysis and economic indicators calculated by the Biosoft system have allowed identifying the regular supply of oil at competitive prices as the key point to the efficiency of biodiesel production chains. The use of oil cake as feedstock is the leverage point of chain performance. The meal sale can lead to a vegetal oil price reduction, without compromising farmers´ income, since they can be able to set up their own oil extraction plants. Coordination is then the critical element and has the potential to improve the performance of both the biodiesel industry and the animal production chain.
Lepton generation-weighting factors and neutrino mass formula
Creators: name: Krolikowski, Wojciech
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A candidate for the simple empirical neutrino mass formula is found, predicting the mass proportion m_1:m_2:m_3 = 0:4:24 and so, the mass ratio Delta m^2_{32}/Delta m^2_{21} = 35 not inconsistent with its experimental estimate. It involves only one free parameter and three generation-weighting factors suggested by the successful mass formula found previously for charged leptons (the simplest neutrino mass formula would predict m_1:m_2:m_3 = 1:4:24 and thus, Delta m^2_{32}/Delta m^2_{21} \simeq 37). A more involved variation of this equation follows from a special seesaw neutrino model with specifically "conspiring" Dirac and Majorana neutrino mass matrices. In this variation m_1:m_2:m_3 \simeq ε^{(ν)}:4:24, where O(ε^{(ν)}) = 10^{-3}.
description: 1+9 pages, LaTeX, no figures
The GAPS programme at TNG XXVI. Magnetic activity in M stars: spectroscopic monitoring of AD Leonis
Creators: name: Di Maio, C.
name: Argiroffi, C.
name: Micela, G.
name: Benatti, S.
name: Lanza, A. F.
name: Scandariato, G.
name: Maldonado, J.
name: Maggio, A.
name: Affer, L.
name: Claudi, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Understanding stellar activity in M dwarfs is fundamental to improving our knowledge of the physics of stellar atmospheres and for planet search programmes. High levels of stellar activity (also with flare events) can cause additional variations in the stellar emission that contaminate the signal induced by a planet and that need to be corrected. The study of activity indicators in active stars can improve our capability of modelling this signal. Our aim is to understand the behaviour of stellar chromospheres of M stars, studying the more sensitive chromospheric activity indicators, characterising their variability and on finding the correlations among these indicators to obtain information on the origin of the magnetic activity in low-mass stars. We studied the main optical activity indicators (Ca II H&K, Balmer lines, Na I D$_{1,2}$ doublet, He I D$_3$ and other helium lines) measured for AD Leonis using the data provided by HARPS-N in 2018 and by HARPS in 2006. We measured excess flux of the selected activity indicators and analysed the correlation between the different indicators as well as the temporal evolution of fluxes. A stellar flare was identified during the 2018 observing run and the H$α$, H$β$, He I 4471 A and He I 5876 A lines were analysed in detail by fitting the line profiles with two Gaussian components. We found that the Ca II H&K flux excesses are strongly correlated with each other, but the Ca II H&K doublet is generally less correlated with the other indicators. Moreover, H$α$ is correlated with Na I doublet and helium lines. Analysing the time variability of flux of the studied lines, we found a higher level of activity of the star during the observations in 2018 than in 2006, while Ca II H&K showed more intense emission on spectra obtained during the observations in 2006. We investigated the flare evaluating the mass motion during the event.
description: 18 pages, 6 figures, 12 tables. Accepted for publication in Section 8. Stellar atmospheres of Astronomy and Astrophysics. The official date of acceptance is 31/07/2020. Abstract shortened for the arXiv listing
The decision to invest and the investment level: An application to Dutch glasshouse horticulture firms
Creators: name: Oskam, Arie J.
name: Goncharova, Natalia V.
name: Verstegen, Jos A.A.M.
name: Oskam, Arie J.
name: Goncharova, Natalia V.
name: Verstegen, Jos A.A.M.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: investments
subject: glasshouse horticulture
subject: Heckman selection model

description: Investment models typically explain only a small share of the total investment variation within or between firms. A reason for this may be that those models do not explicitly differentiate between the decision to invest and the decision about the level of investment. In this paper, a two-steps theoretical framework and estimation procedure are developed to take into account the different nature of both decisions. ‘Nearly zero’ investments are considered to be small replacement or maintenance investments and treated as ‘zero’ investments. The applied two-step Heckman model shows that the decision to invest is significantly related to available capital (-), wealth (+), debts (-), output prices (+), land price growth (+), capital price growth (-), energy price growth (+), revenues (+) and age of the firm owner (-). The level of investment is also related to available capital, wealth, debts, output price, capital price growth and age of the firm owner, but with opposite signs for debts and capital price growth. Moreover, firm size positively affects the level of investment (but not the decision to invest). The fact that both decisions are affected differently proves the rationale of using a two-step investment model but further research is needed to increase the explanatory power of the models.
Strong solutions to stochastic Volterra equations
Creators: name: Karczewska, Anna
name: Lizama, Carlos
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary 60H20; secondary: 60H05, 45D05

description: In this paper stochastic Volterra equations admitting exponentially bounded resolvents are studied. After obtaining convergence of resolvents, some properties for stochastic convolutions are studied. Our main result provide sufficient conditions for strong solutions to stochastic Volterra equations.
description: 16 pages. The existence of strong solutions under some general assumptions is proved. Some proofs changed and precised
An inertial shrinking projection algorithm for split common fixed point problems
Creators: name: Zhou, Zheng
name: Tan, Bing
name: Li, Songxiao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47H09, 47H10, 47J25, 47N40

description: In this paper, the purpose is to introduce and study a new modified shrinking projection algorithm with inertial effects, which solves split common fixed point problems in Banach spaces. The corresponding strong convergence theorems are obtained without the assumption of semi-compactness on mappings. Finally, some numerical examples are presented to illustrate the results in this paper.
description: 18 pages, 2 figures
A model for luminescence of localized state ensemble
Creators: name: Li, Q.
name: Xu, S. J.
name: Xie, M. H.
name: Tong, S. Y.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: A distribution function for localized carriers, $f(E,T)=\frac{1}{e^{(E-E_a)/k_BT}+τ_{tr}/τ_r}$, is proposed by solving a rate equation, in which, electrical carriers' generation, thermal escape, recapture and radiative recombination are taken into account. Based on this distribution function, a model is developed for luminescence from localized state ensemble with a Gaussian-type density of states. The model reproduces quantitatively all the anomalous temperature behaviors of localized state luminescence. It reduces to the well-known band-tail and luminescence quenching models under certain approximations.
description: 14 pages, 4 figures
Improved Quantum State Tomography for the Systems with XX+YY Couplings and Z Readouts
Creators: name: Xin, Tao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum device characterization via state tomography plays an important role in both validating quantum hardware and processing quantum information, but it needs the exponential number of the measurements. For the systems with XX+YY-type couplings and Z readouts, such as superconducting quantum computing (SQC) systems, traditional quantum state tomography (QST) using single-qubit readout operations at least requires $3^n$ measurement settings in reconstructing an $n$-qubit state. In this work, I proposed an improved QST by adding 2-qubit evolutions as the readout operations and obtained an optimal tomographic scheme using the integer programming optimization. I respectively apply the new scheme on SQC systems with the Nearest-Neighbor, 2-Dimensional, and All-to-All connectivities on qubits. It shows that this method can reduce the number of measurements by over 60% compared with the traditional QST. Besides, comparison with the traditional scheme in the experimental feasibility and robustness against errors were made by numerical simulation. It is found that, the new scheme has good implementability and it can achieve comparable or even better accuracy than the traditional scheme. It is expected that the experimentalist from the related fields can directly utilize the ready-made results for reconstructing quantum states involved in their research.
description: 11 pages, 7 figures. To be published in PRA
Gender, Low-cost Land Certification, and Land Rental Market Participation
Creators: name: Holden, Stein T.
name: Deininger, Klaus W.
name: Ghebru, Hosaena H.
name: Holden, Stein T.
name: Deininger, Klaus W.
name: Ghebru, Hosaena H.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Land Economics/Use
subject: Land certification
subject: land rental market participation
subject: female landlords

description: There is a renewed interest in whether land reforms can contribute to market development and poverty reduction in Africa. This paper assesses effects on the allocative efficiency of the land rental market of the low-cost approach to land registration and certification of restricted property rights that was implemented in Ethiopia from the late 1990s. Four rounds of balanced household panel data collected from 16 villages in northern Ethiopia are used. After controlling for endogeneity of land certification and unobserved household heterogeneity affecting land market participation, it was found that land certification enhanced land rental market participation of female landlord households.
description: Land policy
Thermal ripples in bilayer graphene
Creators: name: Mauri, Achille
name: Soriano, David
name: Katsnelson, Mikhail I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study thermal fluctuations of a free-standing bilayer graphene subject to vanishing external tension. Within a phenomenological theory, the system is described as a stack of two continuum crystalline membranes, characterized by finite elastic moduli and a nonzero bending rigidity. A nonlinear rotationally-invariant model guided by elasticity theory is developed to describe interlayer interactions. After neglection of in-plane phonon nonlinearities and anharmonic interactions involving interlayer shear and compression modes, an effective theory for soft flexural fluctuations of the bilayer is constructed. The resulting model, neglecting anisotropic interactions, has the same form of a well-known effective theory for out-of-plane fluctuations in a single-layer membrane, but with a strongly wave-vector dependent bare bending rigidity. Focusing on AB-stacked bilayer graphene, parameters governing interlayer interactions in the theory are derived by first-principles calculations. Statistical-mechanical properties of interacting flexural fluctuations are then calculated by a numerical iterative solution of field-theory integral equations within the self-consistent screening approximation (SCSA). The bare bending rigidity in the considered model exhibits a crossover between a long-wavelength regime governed by in-plane elastic stress and a short wavelength region controlled by monolayer curvature stiffness. Interactions between flexural fluctuations drive a further crossover between a harmonic and a strong-coupling regime, characterized by anomalous scale invariance. The overlap and interplay between these two crossover behaviors is analyzed at varying temperatures.
description: 22 pages, 12 figures
Emotional responding and distress tolerance in women at high vs. low risk for eating disorders in response to physical and cognitive stress
Creators: name: Iasonidou, Eleni
name: Constantinou, Elena
name: Ferreira, Nuno
name: Koushiou, Maria
Publisher: name: Mediterranean Journal of Clinical Psychology
Year: 2023
Subjects: Eating disorder risk; Distress tolerance; Emotional responding; PASAT-C; BHT; Clinical Psychology.

description: Background: Disordered eating has been theorised to function as a maladaptive way of coping with negative affect. The current study aimed to comprehensively assess emotional responding and distress tolerance to a cognitive and a physical distress tolerance task using physiological (heart rate), self-report and behavioural measures (latency to quit task).


Methods: 56 women at high vs. 58 at low eating disorder risk completed the “Paced Auditory Serial Addition Task-Computerised” (PASAT-C) and the “Breath-holding Task” (BHT) and provided their affective ratings upon completion of the tasks. Heart rate was recorded during both tasks. Distress tolerance was assessed via a self-report measure, while latency to quit each task was used as a behavioural index of distress tolerance.


Results: Participants at high risk for eating disorders had higher heart rate during both tasks and reported significantly more unpleasantness and less control after the PASAT-C compared to the low-risk group. Shorter latency to quit the PASAT-C was evidenced in the high vs. low-risk group suggesting lower tolerance for cognitive distress. Breath-holding duration did not differ between the two groups.

Conclusions: Greater physiological and subjective arousal to distressing situations in high-risk individuals indicates a potential hypersensitivity to negative affect, possibly increasing eating disorder vulnerability. Potential implications for eating disorder prevention and management are discussed.
description: Mediterranean Journal of Clinical Psychology, Vol 11, No 3 (2023)
Threshold pion electro- and photoproduction off nucleons in covariant chiral perturbation theory
Creators: name: Navarro, Gustavo H. Guerrero
name: Vacas, M. J. Vicente
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Pion electro- and photoproduction off the nucleon close to threshold is studied in covariant baryon chiral perturbation theory at O($p^3$) in the extended-on-mass-shell scheme, with the explicit inclusion of the $Δ(1232)$ resonance. The relevant low energy constants are fixed by fitting the available experimental data with the theoretical model. The inclusion of the $Δ$ resonance as an explicit degree of freedom substantially improves the agreement with data and the convergence of the model.
Altair's inclination from line profile analysis
Creators: name: Reiners, Ansgar
name: Royer, Frederic
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a detailed spectroscopic study of line broadening in the A7IV-V star Altair. In a wavelength region covering 690AA we reconstruct the overall broadening profile taking into account more than 650 spectral lines. From the broadening profile we determine the projected rotational velocity vsini, derive an upper limit for the equatorial velocity v from the shape of the profile and search for signatures of differential rotation. Our redetermined value of vsini is (227 +-11)km/s. Measuring the first two zeros of the Fourier transformed broadening profile yield no signatures of differential rotation. We derive that Altair is seen under an inclination angle higher than i=68deg and it rotates at v<245km/s or slower than 53% of breakup velocity on a 1sigma level.
description: A&A, accepted
Phonon dispersions and electronic structures of two-dimensional IV-V compounds
Creators: name: Lin, Wanxing
name: Liang, Shi-Dong
name: Li, Jiesen
name: Yao, Dao-Xin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: One novel family of two-dimensional IV-V compounds have been proposed, whose dynamical stabilities and electronic properties have been systematically investigated using the density functional theory. Extending from our previous work, two phases of carbon phosphorus bilayers α- and β-C$_{2}$P$_{2}$ have been proposed. Both of them are dynamically stable and thermally stable at 300K. They possess intrinsic HSE gaps of 2.70 eV and 2.67 eV, respectively. Similar α- and β-C$_{2}$Y$_{2}$ (Y= As, Sb, and Bi) can be obtained if the phosphorus atoms in the α- and β-C$_{2}$P$_{2}$ replaced by other pnictogens, respectively. If the C atoms in the α- and β-C$_{2}$Y$_{2}$ (Y= P, As, Sb, and Bi) are further replaced by other IV elements X (X=Si, Ge, Sn, and Pb), respectively, more derivatives of α- and β-X$_{2}$Y$_{2}$ (Y=N, P, As, Sb, and Bi) also can be obtained. It was found that the majority of them are dynamically stable. The proposed compounds range from metal to insulators depending on their constitutions. All insulated compounds can undergo a transition from insulator to metal induced by biaxial strain. Some of them can undergo a transition from indirect band gap to direct band gap. These new compounds can become candidates as photovoltaic device, thermoelectric material field as well as lamellated superconductors.
description: 58 pages, 65 figures
Relationship Between Executive dysfunction and Suicidal Attempt in Adults Diagnosed with Depression: A Systematic Review
Creators: name: Arbelaez, Maria Camila
name: Grand, Valentina
name: Landinez, Daniel Alfredo
Publisher: name: Mediterranean Journal of Clinical Psychology
Year: 2023
Subjects: Suicide attempt; Executive functioning; Adults; Depression; Intervention; Psychological treatment.

description: Introduction: Suicide attempt has become a public health problem worldwide. Identifying the different risk factors involved in this behavior can result in prevention and intervention alternatives. This phenomenon is associated with environmental, cognitive, psychological, behavioral, biological, and genetic factors.


Method: The search was carried out on Web of Science and Scopus on March, 2023, using the following search equation: topic= “Suicide” AND “Suicidal behaviour” AND “Executive functioning” AND “mood” AND “intervention” OR “psychological treatment” with a date range from January 2001 to March 2023. The reporting follows the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guideline for systematic reviews and meta-analyses. Once the results were obtained, they were loaded onto the Tree of Science platform.


Results: Quantitative results were organized into three trends: Neurobiological factors associated with the attempt of suicidal behavior in adults diagnosed with depression, cognitive factors associated with suicide attempt in adults diagnosed with depression, and potential intervention alternatives for the treatment of suicidal ideation and suicide attempt in adults diagnosed with depression.

Conclusion: Executive dysfunction results in various changes in patients with depressive disorder and a history of suicidal behavior. It is also related to functional variations in the brain, in neural networks and circuits, as well as neuroendocrine changes. The dorsolateral, ventral, and orbitofrontal prefrontal cortex are implicated in this phenomenon. A multidimensional interpretation of this problem is proposed, and the need to identify and promote effective interventions that can help prevent suicide attempt and avoid future relapses.
description: Mediterranean Journal of Clinical Psychology, Vol 11, No 3 (2023)