Miracle-dz/UniFAR-FTUs huggingface dataset:
Resolving the Exposure Puzzle: The Many Facets of Exchange Rate Exposure

Theory predicts sizeable exchange rate (FX) exposure for many firms. However, empirical research has not documented such exposures. To examine this discrepancy, we extend prior theoretical results to model a global firm's FX exposure and show empirically that firms pass through part of currency changes to customers and utilize both operational and financial hedges. For a typical sample firm, pass-through and operational hedging each reduce exposure by 10–15%. Financial hedging with foreign debt, and to a lesser extent FX derivatives, decreases exposure by about 40%. The combination of these factors reduces FX exposures to observed levels.
On an inverse problem of reconstructing a subdiffusion process from nonlocal data

We consider a problem of modeling the thermal diffusion process in a closed metal wire wrapped around a thin sheet of insulation material. The layer of insulation is assumed to be slightly permeable. Therefore, the temperature value from one side affects the diffusion process on the other side. For this reason, the standard heat equation is modified, and a third term with an involution is added. Modeling of this process leads to the consideration of an inverse problem for a one‐dimensional fractional evolution equation with involution and with periodic boundary conditions with respect to a space variable. This equation interpolates heat equation. Such equations are also called nonlocal subdiffusion equations or nonlocal heat equations. The inverse problem consists in the restoration (simultaneously with the solution) of the unknown right‐hand side of the equation, which depends only on the spatial variable. The conditions for overdefinition are initial and final states. Existence and uniqueness results for the given problem are obtained via the method of separation of variables.
Morphodynamique transversale et longitudinale de plages à barres intertidales en domaine macrotidal et en conditions de forte agitation : Baie de Wissant, nord de la France

Plusieurs campagnes de mesures hydrodynamiques et topometriques et de transport sedimentaire, menees sur les differentes plages de la Baie de Wissant, Nord de la France, ont ete effectuees de 2004 a 2006, et conjointement sur l’annee 2004, avec des levees mensuels de profils de plages, dans le but double de mieux comprendre la morphodynamique des plages a barres intertidales dans des sites contrastes (en erosion et en accretion) et l’evolution globale de la plage intertidale de cette baie. Les donnees hydrodynamiques ont porte sur une analyse des parametres de la houle et des courants moyens, et ont ete associees aux variations meteorologiques (conditions de vent). L’analyse combinee de ces deux elements a mis en valeur la dominance d’une composante longitudinale qui porte tantot vers le NE (notamment en condition de temps calme, avec un controle par la maree), tantot vers le SW, en fonction du regime du vent dominant. Les resultats morphometriques apportent des renseignements sur la variation longitudinale de la distribution transversale des barres intertidales sur les plages de la baie, et un eclairage sur le contraste morpho-sedimentaire (erosion-accretion) au sein de cette baie. Les leves mensuels montrent la formation et la destruction de barres, mais ces processus n’ont pas ete mis en evidence par les campagnes experimentales de courte duree (< 3 semaines en continu), sauf pour des barres de swash dont le developpement a ete observe lors de conditions de temps calme. La mobilite transversale n’a guere etait remarquee lors des suivis de court terme. Plusieurs de ces campagnes experimentales ont ete accompagnees par du temps agite qui a permis de mettre en evidence une intensite parfois exceptionnelle des ecoulements longitudinaux. La mobilite longitudinale des barres, mais aussi des chenaux de vidange et leurs figures sedimentaires, etait donc le trait marquant de ces experiences sur le site, avec des rythmes de migration des barres qui ont atteint 90 m/jour quand le vent a souffle lateralement a plus de 19 m s-1, accompagne d’un courant longitudinal frolant une vitesse de 3 m s-1. La forte mobilite longitudinale des barres intertidales en association avec un transport sedimentaire longitudinal important contribue souvent a des variations morphologiques tres significatives au sein du profil, et qui peuvent parfois etre mal interpretees comme la signature d’une migration onshore ou offshore des barres. Cette dominance de la composante longitudinale tend a stabiliser la dynamique cross-shore des barres meme quand la houle depasse 1,5 m. Cependant, cette meme composante induit un desequilibre sedimentaire entre le NE et SW de la baie, privant ainsi la partie erodee (SW) de sediments, et favorisant en parallele l’accumulation et/ou la stabilite du secteur NE.
Half‐mode dielectric waveguide antenna fed by a micro‐strip line with air media for endfire radiation

A half-mode dielectric waveguide antenna fed by a micro-strip line with air media is presented. The proposed antenna consists of two dielectric cuboids and an air-substrate micro-strip line. Due to similar modal field configurations, the dielectric cuboids are excited effectively by the micro-strip line, and they work as two half-mode waveguide antennas working on the TM 0 mode. With the length of 6.5 wavelength at the centre frequency of 5 GHz, a measured endfire gain of 12.2 dBi is achieved. The measured 1 and 3-dB gain bandwidths could reach 17 and 46%, respectively. Good matching is obtained over the entire operating band from 3.5 to 6.5 GHz. Compared with the antennas mounted on a large conducting plane, the proposed antenna has the advantages of a high endfire gain, a wide endfire gain bandwidth, and a stable endfire radiation pattern.
Justicia y Economía: Evaluando la Eficiencia Judicial en Andalucía

espanolEste trabajo tiene como objetivo evaluar el desempeno judicial desde el enfoque economico. Mediante el Analisis Envolvente de Datos (DEA) se estima la eficiencia tecnica de los Juzgados de Primera Instancia de lo Civil de la Comunidad Autonoma de Andalucia, durante el ano 2008. Los resultados muestran que en promedio los tribunales ineficientes podrian incrementar simultaneamente las sentencias y los autos un 19,02%. Asimismo, el numero de casos pendientes se podria haber reducido un 9,38% si los juzgados se hubieran comportado eficientemente. EnglishThis paper analyzes the Judicial Task from an economic view. According to the Data Envelopment Analysis (DEA) it calculates the technical efficiency of the Courts of First Instance of Andalusia, in 2008. The results show that the average of inefficient courts could simultaneously increase the judgments and orders up to 19.02%. The number of pending cases could be reduced, as well to 9.38% if the courts had behaved efficiently.
Apolipoprotein B and non-high-density lipoprotein cholesterol are better risk markers for coronary artery disease than low-density lipoprotein cholesterol in hypertriglyceridemic metabolic syndrome patients.

BACKGROUND Metabolic syndrome is highly prevalent in the general population. Small dense low-density lipoprotein (sd-LDL) particles have been considered as a risk marker in metabolic syndrome diagnosis. Apolipoprotein B (ApoB) concentration reflects the number of LDL particles and is closely associated with atherosclerosis. The aim of this study was to compare the associations of ApoB, non-high-density lipoprotein cholesterol (NHDL-C), and low-density lipoprotein cholesterol (LDL-C) with metabolic syndrome and its relationship with significant coronary stenosis (SCS) in a Tunisian population. METHODS We enrolled 192 patients, who underwent coronary angiography. The body mass index, blood lipids, fasting glucose, insulin concentration, and blood pressure of every patient were measured. Metabolic syndrome was diagnosed according to the International Diabetes Federation criteria. RESULTS The frequency of metabolic syndrome was 58.3%. The comparison of the lipidic parameters between subject with and without metabolic syndrome showed a significant increase in ApoB and NHDL-C but not in LDL-C. By considering triglyceride (TG) limits (TG ≤ 0.9 mmol/L and TG > 1.70 mmol/L), we noted no differences in ApoB, NHDL-C, and LDL-C between subjects with and without metabolic syndrome in triglyceridemia ≤0.9 mmol/L. In triglyceridemia >1.70 mmol/L, a significant increase in ApoB and NHDL-C, but not in LDL-C, was noted. These results seem to consolidate the probability of increased sd-LDL in hypertriglyceridemic metabolic syndrome subjects. Indeed, in our study the odds ratio (OR) of SCS associated with metabolic syndrome is 3.81 (P = 0.007) in the studied population. This risk increases to 8.70 (P = 0.026) in hypertriglyceridemic subjects and seems to be associated with ApoB and NHDL-C (OR = 1.87, P = 0.038; OR = 1.26, P = 0.048). CONCLUSIONS This study suggests that ApoB and NHDL-C seem to be more correlated to SCS in metabolic syndrome with hypertriglyceridemia than LDL-C.
Strategic Information Management: Challenges and Strategies in Managing Information Systems

Today there are few organizations that can afford to ignore information technology and few individuals who would prefer to be without it. As managerial tasks become more complex, so the nature of the required information systems changes from structured, routine support to ad hoc, unstructured, complex enquiries at the highest levels of management. As with the first three editions, this fourth edition of Strategic Information Management: Challenges and Strategies in Managing Information Systems presents the many complex and inter-related issues associated with the management of information systems. This book provides a rich source of material reflecting recent thinking on the key issues facing executives in information systems strategic management. It draws from a wide range of contemporary articles written by leading experts from North America, Asia, and Europe. Designed as a course text for MBA, Master's level students, and senior undergraduate students taking courses in information management, it also provides a wealth of information and references for researchers. New to this edition are updated readings addressing current issues and the latest thinking in information management.
Anticipation as Proof of the Unity of Perception and Thought in Early Ontogeny

We present experimental evidence of anticipation of object motion in 6-8 week old infants. The data gives three arguments to support the view that infants from 1,5-2 months of age have the representation of space and can integrate spatial-temporal characteristics of objects before beginning to perform active locomotion. The first argument draws on the fact that anticipation of continuous events develops before discontinuous or periodical events. The second argument reflects the ability to anticipate and “interpret” the disappearance of a moving object behind a screen. For this, the infant should be using a representation of space. The third argument is the use of different actions (visual strategies) by young infants from 2 months of age. Infants use different action strategies, expressed in different eye movements. Therefore, there is an ability to integrate spatial-temporal characteristics in general representation. Continuity forms the basis of spatial knowledge as it provides the highest cohesion of spatial-temporal characteristics of events. We hypothesize that the continuous representation of objects and events should be included as a necessary immanent component in any perceptual scheme that permits to integrate perception and thought and to understand predictable environments.
Hypertensive disorders in pre-term pregnancy: management and long-term consequences

Josje Langenveld bekeek de gevolgen van hoge bloeddruk tijdens de zwangerschap. In muismodellen onderzocht zij de langetermijneffecten van niet-optimale doorbloeding van de placenta (moederkoek). Dit leidt tot vertraagde groei en slechtere vaatfunctie bij de nakomelingen. Het risico op herhaling bij een volgende zwangerschap is lager dan verwacht, maar het percentage vrouwen met een probleemloze zwangerschap is relatief laag. Aan de hand van de Nationale Verloskunde Database keek Langenveld naar gevolgen van een vroeggeboorte tussen de 34 en 37 weken. Die leidt vooral tot ademhalingsproblemen bij de zuigeling.
Functional Kriging Prediction of Pollution Series: The Geostatistical Alternative for Spatially-fixed Data/Predicción de series de contaminación mediante kriging funcional. La alternativa geoestadística cuando los datos están anclados al espacio

Proper assessment of air quality is of paramount importance. Accordingly, authorities in large cities have established air pollution monitoring networks that register levels of the most dangerous pollutants in a number of city locations on an hourly basis. Thus, the dataset including such measurements can be considered as a panel dataset where data are spatially fixed. Geostatistics deals with such panel or longitudinal data differently to econometrics: geostatistics takes advantage of the spatio-temporal dependencies to make kriging or cokriging predictions at non-observed sites. However spatio-temporal kriging implies a prohibitive computational burden and, as a consequence, functional kriging has emerged as an alternative strategy for dealing with this type of data since it deals with functional data representing the observations recorded at each location observed. Functional kriging could be said to reproduce the history of the phenomenon under study at non-observed sites. This novel approach has been applied in the city of Madrid (Spain) to particulate matter registers. We predict functional data at some of the most polluted sites of the city. La calidad del aire es una cuestion de suma importancia. Por ello en las grandes ciudades se han implantado redes de seguimiento de la calidad del aire que proporcionan horariamente el nivel de los contaminantes mas peligrosos en las ubicaciones donde se han instalado las estaciones de seguimiento. Por tanto, el conjunto de datos relativo a tales mediciones constituye un conjunto de datos panel en el que los datos estan anclados al espacio. El tratamiento geoestadistico de dichos datos es muy diferente al tratamiento econometrico de los mismos; la Geoestadistica se aprovecha de las dependencias espacio-temporales existentes en ellos para llevar a cabo predicciones krigeadas o cokrigeadas en localizaciones no observadas. Sin embargo, el krigeado espacio-temporal implica una enorme carga computacional, lo que ha favorecido la aparicion del kriging funcional, una estrategia geoestadistica para tratar este tipo de datos ya que trabaja con datos funcionales que representan las observaciones registradas en cada localizacion observada. Podria decirse que el kriging funcional reproduce la historia del fenomeno de interes en tales localizaciones. Este novedoso enfoque se aplica en Madrid (Espana) para predecir el nivel de PM10 en algunos de los puntos mas conta¬minados de la ciudad.
Handbook of Research on Urban Informatics : The Practice and Promise of the Real-Time City

In this chapter, we present an important new shift in mobile phone usage—from communication tool to “networked mobile personal measurement instrument. ” We explore how these new “personal instruments” enable an entirely novel and empowering genre of mobile computing usage called citizen science. We investigate how such citizen science can be used collectively across neighborhoods and communities to enable individuals to become active participants and stakeholders as they publicly collect, share, and remix measurements of their city that matter most to them. We further demonstrate the impact of this new participatory urbanism by detailing its usage within the scope of environmental awareness. Inspired by a series of field studies, user driven environmental measurements, and interviews, we present the design of a working hardware system that integrates air quality sensing into an existing mobile phone and exposes the citizen authored measurements to the community—empowering people to become true change agents.
High-Frequency Trading: A Practical Guide to Algorithmic Strategies and Trading Systems

Acknowledgments. Chapter 1 Introduction. Chapter 2 Evolution of High-Frequency Trading. Financial Markets And Technological Innovation. Evolution Of Trading Methodology. Chapter 3 Overview of the Business of High-Frequency Trading. Comparison With Traditional Approaches to Trading. Market Participants. Operating Model. Economics. Capitalizing a High-Frequency Trading Business. Conclusion. Chapter 4 Financial Markets Suitable for High-Frequency Trading. Financial Markets and Their Suitability for High-Frequency Trading. Conclusion. Chapter 5 Evaluating Performance of High-Frequency Strategies. Basic Return Characteristics. Comparative Ratios. Performance Attribution. Other Considerations in Strategy Evaluation. Conclusion. Chapter 6: Orders, Traders and their Applicability to High-Frequency Trading. Order Types. Order Distributions. Conclusion. Chapter 7: Market Inefficiency and Profit Opportunities at Different Frequencies. Predictability of Price Moves at High Frequencies. Conclusion. Chapter: 8: Searching for High-Frequency Trading Opportunities. Statistical Properties of Returns. Linear Econometric Models. Volatility Modeling. Nonlinear Models. Conclusion. Chapter 9: Working with Tick Data. Properties of Tick Data. Quantity and Quality of Tick Data. Bid-Ask Spreads. Bid-Ask Bounce. Modeling Arrivals of Tick Data. Applying Traditional Econometric Techniques to Tick Data. Conclusion. Chapter 10: Trading on Market Microstructure Inventory Models. Overview of Inventory Trading Strategies. Orders, Traders and Liquidity. Profitable Market Making. Directional Liquidity Provision. Conclusion. Chapter 11: Trading on Market Microstructure Information Models. Measures of Asymmetric Information. Information-Based Trading Models. Conclusion. Chapter 12: Event Arbitrage. Developing Event Arbitrage Trading Strategies. What Constitutes an Event? Forecasting Methodologies. Tradeable News. Application of Event Arbitrage. Conclusion. Chapter 13: Statistical Arbitrage in High Frequency Settings. Mathematical Foundations. Practical Applications of Statistical Arbitrage. Conclusion. Chapter 14: Creating and Managing Portfolios of High-Frequency Strategies. Analytical Foundations of Portfolio Optimization. Effective Portfolio Management Practices. Conclusion. Chapter 15: Back-Testing Trading Models. Evaluating Point Forecasts. Evaluating Directional Forecasts. Conclusion. Chapter 16: Implementing High-Frequency Trading Systems. Model Development Lifecycle. System Implementation. Testing Trading Systems. Conclusion. Chapter 17: Risk Management. Determining Risk Management Goals. Measuring Risk. Managing Risk. Conclusion. Chapter 18: Executing and Monitoring High-Frequency Trading. Executing High-Frequency Trading Systems. Monitoring High-Frequency Execution. Conclusion. Chapter 19: Post-Trade Profitability Analysis. Post-Trade Cost Analysis. Post-Trade Performance Analysis. References. About the Web Site. About The Author. Index.
Learning Trajectories as a Tool for Mathematics Lesson Planning.

In this paper, I examine the utility of a mathematics learning trajectory as a tool to support teachers’ attention to students’ mathematical thinking. I present findings from one second grade teacher’s use of a learning trajectory as she planned a sequence of three mathematics lessons. Findings suggest learning trajectories support teachers in choosing appropriate tasks and learning goals, and in anticipating students’ likely approaches and difficulties. Learning trajectories, as representations of student thinking, provide teachers with a means of evaluating evidence of student learning of intended goals and afford them with a range of instructional moves based on their students’ current conceptions.
Exploiting natural dynamics for gait generation in undulatory locomotion

ABSTRACT Robotic vehicles inspired by animal locomotion operate via periodic body movements. The pattern of body oscillation (gait) can be mimicked from animals, but understanding the principles underlying gait generation would allow for broad, flexible applications beyond nature's design. We hypothesise that travelling-wave oscillations observed in undulatory locomotion can be characterised as a natural oscillation of the locomotion dynamics and propose a formal definition of the natural gait for locomotion systems. We identify the essential dynamics and define the mode shape of natural oscillation by the free response of an idealised system. We then use body-environment resonance to define the amplitude and frequency. Explicit formulas for the natural gait are derived to provide insight into the mechanisms underlying undulatory locomotion. Examples of a swimming leech and a fictitious swimmer illustrate how undulatory gaits similar to those observed can be produced as the natural gait and modulated to achieve different swim speeds.
A Geographic Information System (GIS) to visualize the spatio-temporal patterns of the spread and control of dengue epidemics in the Ribeirão Preto city

The present invention relates to an automatically fastening seatbelt assembly which causes an occupant of a vehicle to be automatically held to a seat in the vehicle by a restraining webbing, after the occupant is positioned on the seat in the vehicle. The seatbelt assembly includes a guide rail, a slider which is displaceable along the guide rail and a restraining webbing which is fixed to the slider at one end thereof. This guide rail is provided with stop switches at each end thereof. The stop switches are connected to a source of electricity or an electric control circuit through connecting wires. Further, the stop switches detect the arrival of the slider at either end of the guide rail and output signals to the electric control circuit. More particularly, the present invention relates to improvements in the stop switch assembly which protect the connecting wire which is connected to the stop switches. Specifically, the connecting wire is positioned in a stop switch assembly which includes a "C"-shaped guide bracket, around which the connecting wires are wrapped to prevent kinking in the connecting wires.
A novel approach for indentifying uncertainties within environmental risk assessments

iii Acknowledgements . iv List of contents . v List of tables. xi List of figures . xiii List of abbreviations . xv List of publications, presentations and awards . xvii Chapter 1: Thesis introduction . 1 1.