cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hydrodynamic flow patterns and synchronization of beating cilia
Creators: name: Vilfan, Andrej
name: Julicher, Frank
Publisher: name: arXiv
Year: 2005
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We calculate the hydrodynamic flow field generated far from a cilium which is attached to a surface and beats periodically. In the case of two beating cilia, hydrodynamic interactions can lead to synchronization of the cilia, which are nonlinear oscillators. We present a state diagram where synchronized states occur as a function of distance of cilia and the relative orientation of their beat. Synchronized states occur with different relative phases. In addition, asynchronous solutions exist. Our work could be relevant for the synchronized motion of cilia generating hydrodynamic flows on the surface of cells.
description: 5 pages, 4 figures, v2: minor corrections
[Letter from Anna Antoinette Weber van Bosse]
Creators: name: Weber Van Bosse, Anna Antoinette
Publisher: name: Unknown
Year: 1903

description: Is grateful for the information about the northern Lithothamnion banks. It is for the introduction. The slide of Melobesia thuretii is undecalcified, she does not know the exact specimen the numbers 643a or 643b belong to.
The Impact of Euro Introduction on the Vertical Price Transmission in the German Food Market - Does Money Illusion Matter?
Creators: name: Glauben, Thomas
name: Loy, Jens-Peter
name: Meyer, Jochen
name: Glauben, Thomas
name: Loy, Jens-Peter
name: Meyer, Jochen
Publisher: name: Unknown
Year: 2005
Subjects: Financial Economics
Industrial Organization

description: In this paper the impact of the introduction of the Euro on the vertical price transmission in German food markets is analyzed. It is hypothesized that following the introduction of the Euro the presence of money illusion might have lead to higher real prices, and if so it is likely accompanied by higher margins between respective wholesale and retail prices. While other studies have mainly focused on the behavior of average prices, here reactions at the individual store level are investigated. For cucumber and carrots the vertical price relationships between retail and wholesale prices are estimated by employing an error correction approach, which is enhanced to test for structural breaks with a flexible time frame using a F-max approach. The results indicate significant changes in the vertical price relationships for one forth of the retailers under study. Though significant the directions of changes do not uniquely fit the theoretical predictions for money illusion. Thus, the majority of German food retailers has not used the introduction of the Euro to increase their mark ups.
Oceanographic influences on Pacific hake (Merluccius productus) distribution and biology
Creators: name: Benson, Ashleen Julia
Publisher: name: University of British Columbia
Year: 2009

description: There are persistent decadal scale states in atmosphere-ocean conditions that are called regimes, and a shift from one set of stable conditions to another is called a regime shift. Regime shifts have been identified in 1925, 1947, 1977, 1989, and possibly 1998. In recent years, a substantial amount of effort has been directed at understanding the effects of regime shifts on fish populations. A synthesis of the available information for the eastern North Pacific and Bering Sea is presented in Chapter 1. What is most evident from the review is that pelagic fish exhibit the most dramatic responses to changes in climate-ocean conditions. Pacific hake (Merluccius productus) is the most abundant pelagic fish species in the California Current ecosystem, and is important both commercially and in terms of its large predatory biomass. A review of the life history and ecology of hake is presented in Chapter 2. Hake is a widely distributed species that migrates seasonally between winter spawning grounds off California and summer feeding grounds off the coast of British Columbia. The feeding and spawning distribution of hake shifted northwards following the 1989 regime shift and the biomass of hake present in Canadian waters increased by a factor of two. These changes resulted in disputes on catch allocation between Canadian and United States fisheries management agencies. A method of forecasting would aid in negotiations. Early studies established a link between hake distribution and physical oceanographic conditions, but the exact mechanisms remained to be identified. The objectives of this study are to develop a predictive index of the proportion of the stock that migrates into Canadian waters, and to examine the possibility that the change in distribution coincided with a change in hake growth. The key findings of this study are that the best predictor of hake distribution is the Bakun upwelling index off the coast of California, and that juveniles produced in northern waters off Canada during the 1990s grew faster than those produced in the south. These changes in distribution and juvenile growth are probably related to biomass and/or availability of euphausiids, which are the key prey item of hake.
Optical harmonic generation on the exciton-polariton in ZnSe
Creators: name: Mund, Johannes
name: Yakovlev, Dmitri R.
name: Semina, Marina A.
name: Bayer, Manfred
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study optical harmonic generation on the 1S exciton-polariton in the semiconductor ZnSe. Intense and spectrally narrow exciton resonances are found in optical second (SHG), third (THG), and fourth (FHG) harmonic generation spectra. The resonances are shifted to higher energy by 3.2 meV from the exciton energy in the linear reflectivity spectrum. Additional resonances are observed in the THG and FHG spectra and assigned to combinations of incident and backscattered photons in the crystal. Rotational anisotropy diagrams are measured and further information on the origin of the optical harmonic generation and the involved exciton states is obtained by a symmetry analysis using group theory in combination with a microscopic consideration.
description: 14 pages, 14 figures, submitted to PRB
Alternative Territorial Breakdowns of Statistics for Supporting Rural Policies
Creators: name: Lauwers, Ludwig H.
name: Kerselaers, Eva
name: Lenders, Sonia
name: Vervaet, Mieke
name: Vervloet, Dirk
name: Lauwers, Ludwig H.
name: Kerselaers, Eva
name: Lenders, Sonia
name: Vervaet, Mieke
name: Vervloet, Dirk
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agricultural and Food Policy
subject: rural development
subject: rurality index
subject: OECD
subject: central limit theorem

description: In order to support rural policy making with appropriate information, alternative territorial breakdowns of statistics are necessary. This paper shows how the widely used criterion of 150 inhabitants per km² can be fine tuned to better account for local specific conditions, in particular high population densities. Alternative population density thresholds are confronted with local perceptions of rurality, aggregated in a rurality index. The method is illustrated for two regions that differ in urbanisation level. The rurality index not only increases the discriminatory power, but also helps to find a less erroneous and more robust proxy for international comparable breakdowns of statistics.
The Economics of Biodiversity Conservation in Agricultural Transition
Creators: name: Omer, Amani A.
name: Pascual, Unai
name: Russell, Noel P.
name: Omer, Amani A.
name: Pascual, Unai
name: Russell, Noel P.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Environmental Economics and Policy
subject: agrobiodiversity
subject: intensive agriculture
subject: productivity
subject: technical change

description: This paper explores the dynamic effects of biodiversity conservation on agricultural production in the context of specialised intensive farming systems that may be in transition towards more sustainable farming. The focus is on the analysis of the dynamic effects of changes in the levels of agrobiodiversity, on technical change and productivity in intensive agricultural systems. A theoretical model is used to derive hypotheses regarding these linkages that are empirically tested using a stochastic production frontier model with data from a panel of UK cereal farms for the period 1989-2000. The results suggest that the increased agrobiodiversity has positively helped to shift the production frontier outwards. This indicates that agricultural transition from more to less intensive agricultural systems can be consistent with non-decreasing output levels and an enhancement of biodiversity in agricultural landscapes.
The Value Relevance of the Deference between Nonfinancial AND Financial Measures; With an Emphasis on Enterprise Life Cycle
Creators: name: Rahmani, Ali
Publisher: name: figshare
Year: 2020
Subjects: subject: 150103 Financial Accounting
subject: FOS: Economics and business

description: Stakeholders use different types of information to evaluate companies. Companies are required by various institutions, including stock market regulatory and standard developers, to report information. Previous studies examine value relevance of non-financial and financial performance measures separately.This study examines this relationshipsimultaneously. For this purpose, the companies listed on the Tehran Stock Exchange between 1390 to 1394 are used. The results indicate that the difference between measures is a good indicator to assess the company's future performance. Especially in cases where a large difference is detected. This means that the higher the difference, the weaker the future performance of the companies. The distinction between start-ups and mature companies showed that this index can indicate a company's future performance, while for startups this indicator does not show a strong performance. Given that the effect of the difference evaluated on the Company's future performance may be abnormal returns for shareholders. Results indicate that market participants, use the criteria for evaluating the performance and the value of companies. It is associated with market efficiency.
Determination of the magnetic domain size in the ferromagnetic superconductor UGe2 by three dimensional neutron depolarization
Creators: name: Sakarya, S.
name: van Dijk, N. H.
name: Bruck, E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Three dimensional neutron depolarization measurements have been carried out on single-crystalline UGe2 between 4 K and 80 K in order to determine the average ferromagnetic domain size d. It is found that below T_C = 52K uniaxial ferromagnetic domains are formed with an estimated magnetic domain size of d = 4 - 5 micrometer.
description: 7 pages, 4 figure, 1 table
Tariff-Rate Quotas and Agricultural Trade: An Application to the Agricultural Free-Trade Negotiation between the MERCOSUR and the EU
Creators: name: Drogue, Sophie
name: Ramos, Maria Priscila
name: Drogue, Sophie
name: Ramos, Maria Priscila
Publisher: name: Unknown
Year: 2005
Subjects: subject: International Relations/Trade
subject: MERCOSUR
subject: European Union
subject: agricultural trade
subject: TRQ
subject: GTAP

description: In October 2004 the European Union and the MERCOSUR tried to reach an agreement for creating what would be the world's largest free-trade area accounting for 650 millions people. But despite five years of bilateral work to strike a deal, the two parties stayed on ropes at their meeting in Portugal the 18th of October 2004. The stumbling blocks are the MERCOSUR's demand for a greater access to EU's agricultural markets and the EU's demand for expanded access for industrial goods, services and investments. Though, both partners made great efforts to comply with each other requests, it wasn't enough. In this paper we are interested in the possible last EU's offer to enlarge access to its market through the allocation of bilateral tariff-rate quotas for some MERCOSUR's agricultural products namely corn, wheat, beef, poultry, swine and dairy products. Following the methodology of Elbehri and Pearson (Elbehri and R. 2000) we model bilateral tariff-rate quotas in GTAP using GEMPACK. We then, carry out our simulation to estimate the potential effects of expanding the MERCOSUR's access to these EU's markets.
Supplementary methods
Creators: name: Piemonti, Lorenzo
Publisher: name: figshare
Year: 2020
Subjects: subject: 110306 Endocrinology
subject: FOS: Clinical medicine

description: Supplementary methods of paper "Rapamycin plus DPP-4 inhibitor in improving beta cell function in long standing type 1 diabetes: a double blind prospective randomized trial"
Steering alkyne homocoupling with on-surface synthesized catalysts
Creators: name: Mohammed, Mohammed S. G.
name: Colazzo, Luciano
name: Gallardo, Aurelio
name: Pomposo, José A.
name: Jelínek, Pavel
name: de Oteyza, Dimas G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report a multi-step on-surface synthesis strategy. The first step consists in the surface-supported synthesis of metal-organic complexes, which are subsequently used as catalysts to steer on-surface alkyne coupling reactions. In addition, we analyze and compare the electronic properties of the different coupling motifs obtained.
Tuning of tetrahedrality in a silicon potential yields a series of monatomic (metal-like) glassformers of very high fragility
Creators: name: Molinero, Valeria
name: Sastry, Srikanth
name: Angell, C. Austen
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We obtain monatomic glass formers in simulations by modifying the tetrahedral character in a silicon potential to explore a triple point zone between potentials favoring diamond (dc) and bcc crystals. dc crystallization is always preceded by a polyamorphic transformation of the liquid, and is frustrated when the Kauzmann temperature of the high temperature liquid intersects the liquid-liquid coexistence line. The glass forming liquids are extraordinarily fragile. Our results suggest that Si and Ge liquids may be vitrified at a pressure close to the diamond-beta-tin-liquid triple point.
description: 12 pages, including 3 figures. This revised version covers the same as the original submission plus a discussion of the effect of the polyamorphic transformation on the glass formation ability of the tetrahedral liquids studied
Competitiveness of Russian Dairy Sector: Inter-Regional Comparison
Creators: name: Mokshina, Polina
name: Mokshina, Polina
Publisher: name: Unknown
Year: 2005
Subjects: subject: Livestock Production/Industries
subject: Russia
subject: dairy farming
subject: competitiveness
subject: comparative advantage
subject: inter-regional comparison

description: In competitive market dairy production will shift to the regions with the best conditions. In the Soviet paradigm dairy production was evenly distributed throughout the country, what was caused by extremely low transportation prices and by differentiated by regions procurement prices. Thus, there was no specialized zones of dairy production. The start of economic liberalization in Russia was followed by the process of disintegration of the country's common economic space. Reforms entailed an increase in transportation costs and regional specialization based on comparative advantages of a certain commodity production. Specialized dairy producing zones started to emerge. This paper attempts to determine these zones in Russia in the nearest future. The analysis is based on an interregional comparison of comparative advantages in milk production. The research involves the study of raw milk production, dairy processing and consumption of dairy commodities in 51 regions of the European part of Russia. A system of indices to estimate specialization and comparative advantages in milk production is constructed.
D4.3-Combined systems dynamics model and policy brief of cascades across events sectors and supply chain disruptions.pdf
Creators: name: Lijo John, John
name: Ruggiero, Aino
name: Piotrowicz, Wojciech
Publisher: name: Zenodo
Year: 2024

description: This study identifies cascading effects of supply chain disruptions on critical sectors, such as food, water, energy, and healthcare systems. Since these systems are closely integrated, and the impact of COVID-19 needs to be analysed at a much broader level, this study uses systems thinking approach to study the effect of supply chain disruptions on critical services. The study also develops a causal loop model to gain further insight into how supply chain disruptions caused by COVID-19 affected the coping capabilities of society and how critical services were affected. Further, the study also puts forth certain policy recommendations for both businesses and governments to prepare and protect against a similar situation in the future. This study is undertaken as a part of Work Package 4, task 4.3 under the CORE project funded by the European Union under grant agreement no. 101021746.
Pooling, Separating, and Cream-Skimming In Relative-Performance Contracts
Creators: name: Wang, Yanguo
name: Jaenicke, Edward C.
name: Wang, Yanguo
name: Jaenicke, Edward C.
Publisher: name: Unknown
Year: 2005
Subjects: Production Economics

description: Existing research on tournament-style contests suggests that mechanisms to sort contestants by ability level are unnecessary in the case of linear relative-performance contracts. This paper suggests that this result stems from uniform treatment of workers' marginal returns from effort, marginal disutilities of effort, and reservation wages. Here, we investigate relative-performance contracts with a model that allows these three factors to vary by growers' unobservable ability. Given this framework, we find that it is possible for processors to improve expected profits and total expected welfare by replacing a single contract offering meant to pool all growers with an offering of two contracts meant to separate growers by ability. Under some circumstances, a "cream-skimming" contract offering designed to attract only workers above a minimum ability level can also improve expected profits.
Data and data analysis supporting Landesmann_et_al_2020_JVS
Creators: name: Landesmann, Jennifer
name: Tiribelli, Florencia
name: Paritsis, Juan
name: Veblen, Thomas
name: Kitzberger, Thomas
Publisher: name: figshare
Year: 2020
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 60202 Community Ecology (excl. Invasive Species Ecology)
subject: Plant Biology

description: This file contains the data and data analysis supporting the results of the paper "Increased fire severity triggers positive feedbacks of greater vegetation flammability and favors plant community-type conversions" published in the Journal of Vegetation Science (Landesmann et al. 2020).
Coping with Drought in Rice Farming in Asia: Insights from a Cross-Country Comparative Study
Creators: name: Pandey, Sushil
name: Bhandari, Humnath
name: Ding, Shijun
name: Prapertchob, Preeda
name: Sharan, Ramesh
name: Naik, Dibakar
name: Taunk, Sudhir K.
name: Sastri, Asras
name: Pandey, Sushil
name: Bhandari, Humnath
name: Ding, Shijun
name: Prapertchob, Preeda
name: Sharan, Ramesh
name: Naik, Dibakar
name: Taunk, Sudhir K.
name: Sastri, Asras
Publisher: name: Unknown
Year: 2006
Subjects: subject: Crop Production/Industries
subject: Drought
subject: Economic cost
subject: Coping mechanisms
subject: Poverty

description: Drought is a major constraint affecting rice production especially in rainfed areas of Asia. Despite its importance in rice growing areas, the magnitude of economic losses arising from drought, its impact on farm households and farmers' drought coping mechanisms are poorly understood. This paper provides insights into these aspects of drought based on a cross-country comparative analysis of rainfed rice growing areas in China, India and Thailand. The economic cost of drought is found to be substantially higher in eastern India than in the other two countries. Higher probability and greater spatial covariance of drought and less diversified farming systems with rice accounting for a large r share of household income are likely to be the main reasons for this higher cost of drought in eastern India. Farmers deploy various coping mechanisms but such mechanisms are largely unable to prevent a reduction in income and consumption, especially in eastern India. As a result, welfare consequences on poor farmers are substantial with a large number of people falling back into poverty during drought years. The overall implications for technology design and for policy improvements for drought mitigation and drought relief are discussed in the light of the empirical findings of the study.
Commuting Hamiltonians and multi-time Hamilton-Jacobi equations
Creators: name: Cardin, Franco
name: Viterbo, Claude
Publisher: name: arXiv
Year: 2005
Subjects: subject: Symplectic Geometry (math.SG)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 53D12, 37J10, 70H20, 35F25

description: We prove that if a sequence of pairs of smooth commuting Hamiltonians converge in the $C^0$ topology to a pair of smooth Hamiltonians, these commute. This allows us define the notion of commuting continuous Hamiltonians. As an application we extend some results of Barles and Tourin on multi-time Hamilton-Jacobi equations to a more general setting.
A Dynamic Risk Optimization Model for Evaluating Profitable and Feasible Water Management Plans
Creators: name: Grove, Bennie
name: Oosthuizen, L.K.
name: Backeberg, G.R.
name: Grove, Bennie
name: Oosthuizen, L.K.
name: Backeberg, G.R.
Publisher: name: Unknown
Year: 2006
Subjects: subject: Resource /Energy Economics and Policy
subject: Dynamic Linear Programming
subject: risk
subject: irrigation
subject: feasibility
subject: South Africa

description: Currently the South African government is advocating the cultivation of high valued crops and more efficient use of available water resources through the adoption o f more efficient irrigation technology and irrigation scheduling. A requirement of the National Water Act (Act 36 of 1998) is the compilation of water management plans. The main objective of this paper is to develop a multiperiod mathematical risk programming model able of assisting water user associations with the compilation of water management plans that are both profitable and feasible. Special care was taken to represent canal capacities and irrigation system application rates in the model. Risk simulation procedures are used to generate an appropriately correlated inter- and intra-temporal risk matrix for the programming model. A combination of subjectively elicited distributions of crop yield and objective data on crop prices were used to characterize risk. The model was applied to a representative flood irrigation farm in the Vaalharts irrigation scheme South Africa to demonstrate the capability of the model to optimize water use over a 15 year planning horizon. Model results clearly indicated the potential of high value crops and more efficient irrigation technology to soften the impact of water shortages. Furthermore infrastructure, the financial position of the farmer and the level of risk averseness have significantly impacted on the results. Policy makers and government authorities should take cognizance of these factors when evaluating water use efficiency and water management plans of different water user associations. Improvements in the adopted modeling procedure are also made.
A Case Study on Software Vulnerability Coordination
Creators: name: Ruohonen, Jukka
name: Rauti, Sampsa
name: Hyrynsalmi, Sami
name: Leppänen, Ville
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Context: Coordination is a fundamental tenet of software engineering. Coordination is required also for identifying discovered and disclosed software vulnerabilities with Common Vulnerabilities and Exposures (CVEs). Motivated by recent practical challenges, this paper examines the coordination of CVEs for open source projects through a public mailing list. Objective: The paper observes the historical time delays between the assignment of CVEs on a mailing list and the later appearance of these in the National Vulnerability Database (NVD). Drawing from research on software engineering coordination, software vulnerabilities, and bug tracking, the delays are modeled through three dimensions: social networks and communication practices, tracking infrastructures, and the technical characteristics of the CVEs coordinated. Method: Given a period between 2008 and 2016, a sample of over five thousand CVEs is used to model the delays with nearly fifty explanatory metrics. Regression analysis is used for the modeling. Results: The results show that the CVE coordination delays are affected by different abstractions for noise and prerequisite constraints. These abstractions convey effects from the social network and infrastructure dimensions. Particularly strong effect sizes are observed for annual and monthly control metrics, a control metric for weekends, the degrees of the nodes in the CVE coordination networks, and the number of references given in NVD for the CVEs archived. Smaller but visible effects are present for metrics measuring the entropy of the emails exchanged, traces to bug tracking systems, and other related aspects. The empirical signals are weaker for the technical characteristics. Conclusion: [...]
Unfolding cross-linkers as rheology regulators in F-actin networks
Creators: name: DiDonna, B. A.
name: Levine, Alex J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We report on the nonlinear mechanical properties of a statistically homogeneous, isotropic semiflexible network cross-linked by polymers containing numerous small unfolding domains, such as the ubiquitous F-actin cross-linker Filamin. We show that the inclusion of such proteins has a dramatic effect on the large strain behavior of the network. Beyond a strain threshold, which depends on network density, the unfolding of protein domains leads to bulk shear softening. Past this critical strain, the network spontaneously organizes itself so that an appreciable fraction of the Filamin cross-linkers are at the threshold of domain unfolding. We discuss via a simple mean-field model the cause of this network organization and suggest that it may be the source of power-law relaxation observed in in vitro and in intracellular microrheology experiments. We present data which fully justifies our model for a simplified network architecture.
description: 11 pages, 4 figures. to appear in Physical Review E
The Effects of Government Maize Marketing Policies on Maize Market Prices in Kenya
Creators: name: Jayne, Thomas S.
name: Myers, Robert J.
name: Nyoro, James K.
name: Jayne, Thomas S.
name: Myers, Robert J.
name: Nyoro, James K.
Publisher: name: Unknown
Year: 2006
Subjects: subject: International Development
subject: Kenya
subject: income transfers
subject: maize policy
subject: price stabilization
subject: VAR

description: The Government of Kenya pursues maize marketing policy objectives through the National Cereals and Produce Board (NCPB) which procures and sells maize at administratively determined prices, and stores maize as a contingency against future shortages. A private sector marketing channel competes with the NCPB and prices in this channel are set by supply and demand forces. This paper estimates the effects of NCPB activities on the historical path of private sector maize market prices in Kenya between 1989 and 2004. Results provide important insights into the historical effects of the NCPB, and will provide useful input into deliberations on the appropriate role for the NCPB in the future. It was not possible to use a fully structural econometric model to estimate the historical policy effects because of data limitations in Kenya, which are typical of many developing countries. Instead we use a reduced form vector autoregression model (VAR) and show how policy simulation results can be obtained from a fairly parsimonious VAR that can be estimated with sparse data and imposes only minimal identification restrictions. Results show that NCPB activities have stabilized maize market prices in Kenya, reduced price levels in the early 1990s, and raised price levels by roughly 20 percent between 1995 and 2004. Because roughly 60 percent of Kenya's rural households purchase maize while less than 30 percent sell maize, the government's maize marketing board operations have transferred income from urban consumers and most small rural households to maize selling farmers.
Home, SafeHome: Smart Home Reliability with Visibility and Atomicity
Creators: name: Ahsan, Shegufta Bakht
name: Yang, Rui
name: Noghabi, Shadi A.
name: Gupta, Indranil
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Smart environments (homes, factories, hospitals, buildings) contain an increasing number of IoT devices, making them complex to manage. Today, in smart homes where users or triggers initiate routines (i.e., a sequence of commands), concurrent routines and device failures can cause incongruent outcomes. We describe SafeHome, a system that provides notions of atomicity and serial equivalence for smart homes. Due to the human-facing nature of smart homes, SafeHome offers a spectrum of {\it visibility models} which trade off between responsiveness vs. incongruence of the smart home state. We implemented SafeHome and performed workload-driven experiments. We find that a weak visibility model, called {\it eventual visibility}, is almost as fast as today's status quo (up to 23\% slower) and yet guarantees serially-equivalent end states.
description: 12 pages
Physics at ELSA, achievements and future
Creators: name: Thoma, U.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: At ELSA interesting results on baryon resonances have been obtained by the CB-ELSA, the CBELSA/TAPS and the SAPHIR collaborations. New resonances were found, in particular a new $\rm D_{15}(2070)$ decaying into $pη$, was recently observed by the CB-ELSA experiment. The availability of a polarized beam and a polarized target did allow to measure the GDH sum rule up to 2.9 GeV. In the future double polarization experiments will be performed using the Crystal Barrel detector together with new forward detector components. These polarization observables will provide important additional information for the partial wave analyses performed to extract the contributing resonances and their parameters from the data.
description: Prepared for the MENU 2004 conference proceedings, 7 pages, 6 eps-figures
The Niger Food Crisis: Causes and Implications for Research and Development from an Integrated Agricultural Economics Perspective
Creators: name: Abele, Steffen
name: Twine, Edgar
name: Abele, Steffen
name: Twine, Edgar
Publisher: name: Unknown
Year: 2006
Subjects: subject: Food Security and Poverty
subject: Research and Development/Tech Change/Emerging Technologies
subject: Food security
subject: Niger
subject: small scale farming
subject: risk management

description: During the 2004 food crisis in Niger, the weakness of the main production system, millet, to produce enough food to sustain short term crises, has been revealed. Questions arise how the Nigerian smallholder systems can be assisted by research and development policies to intensify production and improve food security. The paper assesses technical options according to their economic sustainability. A sequence of models is applied: On plot level, production functions of inter cropping systems were estimated to determine yields and their variability of the major crops. These data were fed in a nonlinear program to test the inn ovations, first at stable prices, then at declining prices that were obtained from an interregional trade model. The latter was shocked by the excess obtained from the innovations' surpluses. Results show that due to risk aversion and price volatility of output markets, farmers adopt intensive innovations less than expected. Instead, they switch to low-input techniques. Recommendations derived from the study are that research has to develop low-risk technologies to intensify Nigerian millet systems, and that domestic market policies have to stabilize prices in order to reduce market risks and set incentives for intensification. Price stabilization has to be done in a market-conform way, through buying and selling of millet, but not through price fixing or subsidizing.
Canonical double covers of circulants
Creators: name: Fernandez, Blas
name: Hujdurović, Ademir
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C25, 05C76

description: The canonical double cover $B(X)$ of a graph $X$ is the direct product of $X$ and $K_2$. If $Aut(B(X)) \cong Aut(X) \times \mathbb{Z}_2$ then $X$ is called stable; otherwise $X$ is called unstable. An unstable graph is nontrivially unstable if it is connected, non-bipartite and distinct vertices have different neighborhoods. Circulant is a Cayley graph on a cyclic group. Qin et al. conjectured in [J. Combin. Theory Ser. B 136 (2019), 154-169] that there are no nontrivialy unstable circulants of odd order. In this paper we prove this conjecture.
description: 9 pages
Breaking scale invariance from a singular inflaton potential
Creators: name: Gong, Jinn-Ouk
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we break the scale invariance of the primordial power spectrum of curvature perturbations of inflation. Introducing a singular behaviour due to spontaneous symmetry breaking in the inflaton potential, we obtain fully analytic expressions of scale dependent oscillation and a modulation in power on small scale in the primordial spectrum. And we give the associated cosmic microwave background and matter power spectra which we can observe now and discuss the signature of the scale dependence. We also address the possibility of whether some inflationary model with featured potential might mimic the predictions of the scale invariant power spectrum. We present some examples which illustrate such degeneracies.
description: 20 pages, 9 figures; Discussion expanded and references added; Miscellaneous typos corrected
Empathy, resilience and distress in Norwegian and English investigative interviewers.
Creators: name: Iversen, Stine
Publisher: name: University of Leicester
Year: 2021
Subjects: Uncategorized

description: There has been increased scrutiny of occupations who less obviously experience adverseimpacts from indirect exposure to trauma. This thesis aimed to understand occupationaldistress in non-traditional professions, who might similarly experience secondary traumathrough exposure to traumatogenic material; legal profession and law enforcement.Literature ReviewA systematic literature review explored the prevalence and predictors of secondary trauma inlegal professions. Repeated exposure to clients who have experienced trauma comprises asignificant part of lawyers’, attorneys’, solicitors’ and judges’ roles. The search elicited tenarticles for review. Quality appraisal showed significant methodological limitations in thestudies. Still, results showed a high prevalence of secondary trauma, compared to populationgroups and other professional groups. Predictors included gender, work experience, personaltrauma and level of exposure. Findings and conclusions are discussed and indicate that thesignificant variability between studies suggest a need for conceptually consistent andscientifically robust studies in the future.Research ReportThe research report examined secondary trauma prevalence and predictors in English andNorwegian investigative interviewers, as well as the potential role of empathy in thedevelopment of secondary trauma. Police officers whose work task involved investigativeinterviewing were invited to complete an online survey, consisting of questionnairesmeasuring psychological distress, secondary trauma, empathy and perceived organisationalsupport. The results indicated moderate levels of distress and secondary trauma, which werefound to be higher than reported national and international norms. Secondary trauma wasfound to correlate with wider psychological morbidity, and predictive models of distress andresilience were suggested. Findings emphasised the need to implement organisational supportstructures and resilience-building schemes to sustain police officers in key roles to ait thevulnerable and secure prosecutions.
Determinants of Wellbeing Among Smallholders in Adjumani District, Uganda
Creators: name: Bashaasha, Bernard
name: Kidoido, Michael
name: Hansen, Esbern Friis
name: Bashaasha, Bernard
name: Kidoido, Michael
name: Hansen, Esbern Friis
Publisher: name: Unknown
Year: 2006
Subjects: subject: Consumer/Household Economics
subject: Adjumani
subject: poverty analysis
subject: DASS
subject: ordinal logit

description: An ordered logistic regression model was used to empirically establish the quantitative effects of community identified (local) determinants of wellbeing on the level of household wellbeing. The model was fitted to data for a sample of 200 households collected in the last quarter of 2002. The dependent variable, poverty category, has three levels namely poorest =1, Less poor =2, and Better off =3. Fourteen independent variables are used. Results show that households that own less than 5 acreage of land, that are male headed, have a nonagricultural source of income and are actively involved in agricultural development activities have a higher probability (odds) of enjoying wellbeing above any given level. Land ownership seems to be the most important determinant of wellbeing in Adjumani district. Furthermore, owning livestock and having a household head with an education level of secondary school and above are also important determinants of household wellbeing in Adjumani district. We find household wellbeing to be negatively affected by household size, age of the household head and whether any family member has had any long illness although only the age of the household is significant. We recommend deepening of the Universal Primary Education (UPE) and initiation of Universal Secondary Education to increase the education levels of the rural people. We also recommend continued and expansion of community level agricultural development activities, strengthening of the land tenure provisions to enhance access to land and initiation of programs to enhance animal ownership among small holder farmers in Adjumani.
The contrast of magnetic elements in synthetic CH- and CN-band images of solar magnetoconvection
Creators: name: Uitenbroek, Han
name: Tritschler, Alexandra
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a comparative study of the intensity contrast in synthetic CH-band and violet CN-band filtergrams computed from a high-resolution simulation of solar magnetoconvection. The underlying simulation has an average vertical magnetic field of 250 G with kG fields concentrated in its intergranular lanes, and is representative of a plage region. To simulate filtergrams typically obtained in CH- and CN-band observations we computed spatially resolved spectra in both bands and integrated these spectra over 1 nm FWHM filter functions centred at 430.5 nm and 388.3 nm, respectively. We find that the average contrast of magnetic bright points in the simulated filtergrams is lower in the CN-band by a factor of 0.96. This result strongly contradicts earlier semi-empirical modeling and recent observations, which both etimated that the bright-point contrast in the CN-band is \emph{higher} by a factor of 1.4. We argue that the near equality of the bright-point contrast in the two bands in the present simulation is a natural consequence of the mechanism that causes magnetic flux elements to be particularly bright in the CN and CH filtergrams, namely the partial evacuation of these elements and the concomitant weakening of molecular spectral lines in the filter passbands. We find that the RMS intensity contrast in the whole field-of-view of the filtergrams is 20.5% in the G band and 22.0% in the CN band and conclude that this slight difference in contrast is caused by the shorter wavelength of the latter. Both the bright-point and RMS intensity contrast in the CN band are sensitive to the precise choice of the central wavelength of the filter.
description: 24 pages, 9 figures, submitted to ApJ
Heyberger, Bernhard: Les chrétiens du Proche-Orient au tmeps de la réforme catholique
Creators: name: Kaufhold, Hubert
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 80 (1996): Oriens christianus, Band 80
Testing for monotone increasing hazard rate
Creators: name: Hall, Peter
name: Van Keilegom, Ingrid
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62G09, 62G10, 62G20, 62N03 (Primary)

description: A test of the null hypothesis that a hazard rate is monotone nondecreasing, versus the alternative that it is not, is proposed. Both the test statistic and the means of calibrating it are new. Unlike previous approaches, neither is based on the assumption that the null distribution is exponential. Instead, empirical information is used to effectively identify and eliminate from further consideration parts of the line where the hazard rate is clearly increasing; and to confine subsequent attention only to those parts that remain. This produces a test with greater apparent power, without the excessive conservatism of exponential-based tests. Our approach to calibration borrows from ideas used in certain tests for unimodality of a density, in that a bandwidth is increased until a distribution with the desired properties is obtained. However, the test statistic does not involve any smoothing, and is, in fact, based directly on an assessment of convexity of the distribution function, using the conventional empirical distribution. The test is shown to have optimal power properties in difficult cases, where it is called upon to detect a small departure, in the form of a bump, from monotonicity. More general theoretical properties of the test and its numerical performance are explored.
description: Published at http://dx.doi.org/10.1214/009053605000000039 in the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Some Recent Advances in Bound-State Quantum Electrodynamics
Creators: name: Jentschura, U. D.
name: Evers, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss recent progress in various problems related to bound-state quantum electrodynamics: the bound-electron g factor, two-loop self-energy corrections and the laser-dressed Lamb shift. The progress relies on various advances in the bound-state formalism, including ideas inspired by effective field theories such as Nonrelativistic Quantum Electrodynamics. Radiative corrections in dynamical processes represent a promising field for further investigations.
description: 12 pages, nrc1 LaTeX style
Environmental Policy Issues for Sustainable Economic Development in China
Creators: name: Burnett, Kimberly M.
name: Roumasset, James A.
name: Burnett, Kimberly M.
name: Roumasset, James A.
Publisher: name: Unknown
Year: 2006
Subjects: Environmental Economics and Policy

description: A central pillar of the sustainability movement is the call to include environmental accounting in standard measures of economic performance. This increased transparency would, in principle, mitigate the temptation of economic managers and policy makers to increase growth in material consumption at the expense of the environment. Moreover, as Repetto (1989) and others have argued, deducting depreciation of produced capital from NNP but not deducting depreciation of natural capital is inconsistent and debases NNP as a possible indicator of welfare. Based on the evidence available, it appears that while GNNP is substantially less than NNP, these adjustments do not adversely compromise existing estimates of economic growth for China.
Quantum Entanglement and Cryptography for Automation and Control of Dynamic Systems
Creators: name: Khoshnoud, Farbod
name: Esat, Ibrahim I.
name: Javaherian, Shayan
name: Bahr, Behnam
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: Quantum Physics (quant-ph)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: This paper addresses the application of quantum entanglement and cryptography for automation and control of dynamic systems. A dynamic system is a system where the rates of changes of its state variables are not negligible. Quantum entanglement is realized by the Spontaneous Parametric Down-conversion process. Two entangled autonomous systems exhibit correlated behavior without any classical communication in between them due to the quantum entanglement phenomenon. Specifically, the behavior of a system, Bob, at a distance, is correlated with a corresponding system, Alice. In an automation scenario, the 'Bob Robot' is entangled with the 'Alice Robot' in performing autonomous tasks without any classical connection between them. Quantum cryptography is a capability that allows guaranteed security. Such capabilities can be implemented in control of autonomous mechanical systems where, for instance, an 'Alice Autonomous System' can control a 'Bob Autonomous System' for applications of automation and robotics. The applications of quantum technologies to mechanical systems, at a scale larger than the atomistic scale, for control and automation, is a novel contribution of this paper. Notably, the feedback control transfer function of an integrated classical dynamic system and a quantum state is proposed.
description: 20 pages, 10 figures
On the Structure of the Weil Restriction of Abelian Varieties
Creators: name: Diem, Claus
name: Naumann, N.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14K15, 11G10

description: We give a description of endomorphism rings of Weil restrictions of abelian varieties with respect to finite Galois extensions. The results are applied to study the isogeny decomposition of Weil restrictions.
description: This is now the paper appeared in print