Miracle-dz/UniFAR-FTUs huggingface dataset:
Circulant games

We study a class of two-player normal-form games with cyclical payoff structures. A game is called circulant if both players’ payoff matrices fulfill a rotational symmetry condition. The class of circulant games contains well-known examples such as Matching Pennies, Rock-Paper-Scissors, as well as subclasses of coordination and common interest games. The best response correspondences in circulant games induce a partition on each player’s set of pure strategies into equivalence classes. In any Nash Equilibrium, all strategies within one class are either played with strictly positive or with zero probability. We further show that, strikingly, a single parameter fully determines the exact number and the structure of all Nash equilibria (pure and mixed) in these games. The parameter itself only depends on the position of the largest payoff in the first row of one of the player’s payoff matrix.
Interannual variation of strobilation by the scyphozoan Aurelia labiata in relation to polyp density, temperature, salinity, and light conditions in situ

Jellyfish are important components of aquatic ecosystems and may interfere with human priorities through damage to fisheries, tourism, and power production. Jellyfish populations are renowned for large, unexplained outbreaks (blooms) that may be affected by polyp density and environ- mental factors, including temperature, salinity, light, and food. In this study, 14 to 15 sites underneath marina floats were monitored by monthly photographs; temperature, salinity, and light intensities were recorded beneath the floats from December through March in 3 yr in order to quantify the amounts and times of strobilation of the moon jellyfish Aurelia labiata in relation to polyp density and environmental factors in Cornet Bay, Washington, USA. Strobilation occurred during February 2004 (Year 1), January and February 2005 (Year 2), and February to April 2006 (Year 3), when temperature, salinity, and light were increasing after the annual minima. Polyps averaged 58% cover and densities of 9.3 cm -2 with lit- tle variation among years. Polyp densities were not correlated with the amounts or start times of strobi- lation. By contrast, the amounts and times of strobilation and all physical factors tested (temperature, salinity/precipitation, light) differed significantly among years. Strobilation was greatest (~63% of polyps) and earliest in Year 2, when pre-strobilation temperature and daily light exposure were high and precipitation was low. The differences in amounts and times of strobilation were greater than predicted from previous laboratory experiments, thus suggesting additive effects of environmental factors. Warm temperatures, nutrient delivery from run-off, and high sunlight enhance plankton production, provid- ing abundant food for the polyps and new jellyfish, and those environmental cues synchronize jellyfish and plankton production.
Effect of Sulphur Application on Wheat Production in Calcareous Soil under Saline Irrigation Water Conditions

A field experiment was conducted at Ras Sudr, South of Sinai. The experimental soil was cultivated bywheat (Triticum Vulgare L.). Ras Sudr soil is calcareous in nature and is characterized by high content of CaCO3(53.9%) and total soluble salts (EC, 29.6 dSm-1). The investigated soil is irrigated with ground water (EC about 6.18dSm-1), which is considered to be the main source of irrigation water in this area. The effect of irrigation periods (7, 14,21 days), phosphorus applications 200 kg and 400 kg/fed. superphosphate (30 and 60 kg P2O5/fed.) and sulphur levels(0, 100, 300 and 500 kg S/fed.) on the nutrient content of wheat at the vegetative, flowering and maturity stages of plantgrowth. The interaction effect of sulphur, phosphorus treatments and irrigation periods on the straw and grain yields ofwheat plant was studied. The results indicated that sulphur application under 200 kg superphosphate (30 kg P2O5/fed)significantly increased of the grain and straw yields under different irrigation periods. In contrary, increasing sulphurapplication under 400 kg superphosphate (60 kg P2O5/fed) decreased grain yield gradually by increasing sulphurapplication more than 100 kg S/fed. While the straw yield increased by increasing sulphur application up to 500 kgS/fed.
Putting the Student in Charge: Adding Value to the Food Chemistry Laboratory Through Student Generated Experiments, Integration of Transferable Skills and Peer and Audio Feedback

This paper describes the implementation of an alternative laboratory practical for a group of third year BSc Nutraceuticals students. The main objectives were to prepare students for the more independent final year research project; to incorporate innovative approaches to feedback; and to integrate key employability skills into the curriculum. These were achieved through building the skills required to ultimately allow students working in groups to research, design and run a laboratory for their class. The project involved innovative approaches to feedback, including weekly feedback sessions, report checklists and audio feedback podcasts. The feedback has been particularly well received, and there is evidence that it will be reusable and will ‘feed-forward’ to other modules. The author, and the students in general, believe the group are more prepared for final year research projects and work placement owing to the redesign of the laboratory assessment.
Midlatitude postsunset plasma bubbles observed over Europe during intense storms in April 2000 and 2001

Plasma bubbles are prevalent features of the equatorial/low‐latitude ionosphere which are seldom observed at middle and high latitudes. Understanding the influence of geomagnetic storms on plasma bubbles' migration to higher latitudes is an important space weather topic, since a geomagnetic storm is an important phenomenon of space weather. This paper reports on the first observations of postsunset/evening midlatitude plasma bubbles in the European sector during the main phase of severe storms (Dst≤−200 nT) on 6 April 2000 and 11 April 2001. Plasma depletions observed in Global Navigation Satellite System total electron content measurements are confirmed with those observed from in situ Defense Meteorological Satellite Program ion density measurements. The results show that the plasma bubbles were migrating north at virtual speeds of 400 m/s and on each of the storm days they extended as far north as ∼42° (geographic latitude). It is estimated that the plasma bubbles may have grown to a maximum apex height of approximately 4000 km. During the time of bubble occurrence, the evening midlatitude plasma was enhanced and the equatorial ionization anomaly extended to European midlatitudes. In addition, evidence of the upward plasma motion was found in ionosonde hmF2 and h'F measurements, while the interplanetary electric field Ey was enhanced. This was found to suggest that the possible mechanism for the enhancement of midlatitude plasma and subsequent midlatitude plasma bubbles occurrence was the eastward penetration electric field associated with Bz southward turning.
Argument structure and agency in Bemba passives

Bemba employs two passive constructions: an older one with verbal extension -w- and a more recent construction involving the class 2 subject marker ba-. We argue that ba- is ambiguous between an ordinary, referential class 2 marker, and an underspecified passive marker, and is disambiguated by the overt encoding of a class 2 subject, or an oblique semantic agent phrase. Under the passive interpretation, the semantic patient displays both subject-like and object-like properties, posing a problem for the analysis of argument structure in these constructions, and of subjects and objects in Bantu. In contrast, the -w- passive extension is increasingly used in contexts where the agent cannot be expressed, but also in combination with the neutro-passive extension -ik-, that is, with predicates with reduced valency, where it licenses the expression of an agent oblique phrase. We argue that the ba- passive is used in more typical passive contexts, while the -w- passive becomes increasingly restricted to more marginal grammatical contexts. The paper shows that both passive constructions are taking part in a wider grammaticalization process, in which two main functions of the passive, change of argument structure and encoding of agency, are becoming dissociated.
Detecting circumbinary planets using eclipse timing of binary stars - numerical simulations

The presence of a body in an orbit around a close eclipsing binary star manifests itself through the light time e ect influencing the observed times of eclipses as the close binary and the circumbinary companion both move around the common centre of mass. This fact combined with the periodicity with which the eclipses occur can be used to detect the companion. Given a su cient precision of the times of eclipses, the eclipse timing can be employed to detect substellar or even planetary mass companions. The main goal of the paper is to investigate the potential of the photometry based eclipse timing of binary stars as a method of detecting circumbinary planets. In the models we assume that the companion orbits a binary star in a circular Keplerian orbit. We analyze both the space and ground based photometry cases. In particular, we study the usefulness of the on-going COROT and Kepler missions in detecting circumbinary planets. We also explore the relations binding the planet discovery space with the physical parameters of the binaries and the geometrical parameters of their light curves. We carry out detailed numerical simulations of the eclipse timing by employing a relatively realistic model of the light curves of eclipsing binary stars. We study the influence of the white and red photometric noises on the timing precision. We determine the sensitivity of the eclipse timing technique to circumbinary planets for the ground and space based photometric observations. We provide suggestions for the best targets, observing strategies and instruments for the eclipse timing method. Finally, we compare the eclipse timing as a planet detection method with the radial velocities and astrometry.
Integrated Partial Match Query in GeographicInformation Retrieval

This paper presents the evaluation of integrated partial match query in Geographic Information Retrieval (GIR). To facilitate the evaluation, Kuala Lumpur tourist related data is used as test collection and is stored in SuperWeb, a map server. Then the map server is customized to enhance its query capability to recognize word in partial or case sensitive between layers of spatial data. Query keyword is tested using the system and results are evaluated using experiments on sample data. Findings show that integrated partial match query provides more flexibility to tourist in determining search results.
Completing the European Union Customs Union: The Effects of Trade Procedure Harmonization*

A main component of customs unions is a common trade policy on imports from non-member countries. Trade policy covers both tariff and non-tariff barriers like trade procedures. We argue that since trade procedures vary markedly across EU countries, the EU is not, strictly speaking, a customs union. To illustrate this, we estimate the impact of trade procedures on exports from non-EU countries and find a highly statistically significant and negative effect. Simulating what the effects would be of harmonizing trade procedures, i.e. to actually complete the EU customs union, we find that aggregated exports to the EU would increase by 20 percent for the average exporter.
The Computational Generation and Realization of Spatial Truss Structures

Computational methods have been successfully applied in structural analysis and drawings of large spatial structures. However, there are still huge challenges in performing conceptual design of structures using computers as what human brain is able to do. A computational method, named performance-based structural synthesis has been proposed and validated to generate and realize planar truss structures. However, it is insufficient for more general spatial truss structures whose geometries and load-carrying requirements are more complex compared with those of planar truss. Therefore, this computational synthesis method based on planar shape grammar was extended and presented in this paper to generate three-dimensional spatial truss structures through building 3D shape grammars and multi-objective hybridized optimization algorithm. Meanwhile techniques of load-generation were employed in the structural synthesis method to realize its engineering application. In the aspect of structural configuration, the method integrates structural topology, geometry and section size allocation; in the aspect of structural design and optimization, it takes into account the combining effects of safety, economy, construction and architectural elegance. Thus the structure generated by this synthesis method must be the best design in terms of the overall structural performance and cost compared with that obtained by traditional design method.
The use of the nonlinear models in the growth of pears of ‘Shinseiki’ cultivar

EnglishThe goal of this study was to elucidate the growth and development of the Asian pear fruit, on the grounds of length, diameter and fresh weight determined over time, using the non-linear Gompertz and Logistic models. The specifications of the models were assessed utilizing the R statistical software, via the least squares method and iterative Gauss-Newton process (DRAPER & SMITH, 2014). The residual standard deviation, adjusted coefficient of determination and the Akaike information criterion were used to compare the models. The residual correlations, observed in the data for length and diameter, were modeled using the second-order regression process to render the residuals independent. The logistic model was highly suitable in demonstrating the data, revealing the Asian pear fruit growth to be sigmoid in shape, showing remarkable development for three variables. It showed an average of up to 125 days for length and diameter and 140 days for fresh fruit weight, with values of 72mm length, 80mm diameter and 224g heavy fat. Key words: Biometric measurements; Asian pear; model Gompertz; logistic model portuguesEste trabalho teve por objetivo descrever o crescimento e desenvolvimento de frutos de pereira asiatica, com base no comprimento, diâmetro e peso fresco obtidos ao longo do tempo, pelos modelos nao lineares Gompertz e Logistico. Os parâmetros dos modelos foram estimados utilizando rotinas no software R, pelo metodo de minimos quadrados e processo iterativo de Gauss-Newton (DRAPER & SMITH, 2014). Os modelos foram comparados utilizando o desvio padrao residual, coeficiente de determinacao ajustado e o criterio de informacao de Akaike. A correlacao residual presente nos dados de comprimento e diâmetro foi modelada por processo auto-regressivo de segunda ordem, tornando os residuos independentes. O modelo Logistico mostrou-se mais adequado para descrever os dados, comprovando o carater sigmoidal do crescimento da pera asiatica com desenvolvimento acentuado das tres variaveis, com ate 125 dias para o comprimento e diâmetro e 140 dias para o peso fresco dos frutos, estabilizando-se, em media, com 72mm de comprimento, 80mm de diâmetro e 224g de peso fresco. Palavras-chave: medidas biometricas; pera asiatica; modelo Gompertz; modelo Logistico
Low Back Pain among Nurses in a Tertiary Hospital, South India

A cross-sectional survey was carried out to assess the prevalence of Low Back Pain (LBP) among nurses, their risk status and association between LBP and selected demographic and clinical variables. The sample was female nurses between the age group of 20 and 60 years who could speak and write English, and willing to participate. A demographic proforma and a standardized screening tool for LBP were used for data collection. Approval for Institutional Review Board and written consent from participants was obtained. The completed forms (1284) were analysed, 53.4 % of the nurses had LBP and 17.1 % among them were at high risk status. There was a significant association (p<0.001) between LBP and age, body mass index, experience, and place of work. As LBP is common among nurses and nurses comprise majority of the health care professionals adequate precautions should be taken by the nurses to prevent low back pain. Periodic screening of nurses for low back pain and referring the high risk nurses for immediate medical assistance may prevent complications related to low back pain and improve the functional ability of the nurses. Regular education on good body postures, physical fitness and appropriate body mechanics may help in prevention of low back pain among nurses.
Model-based centralized AMB control with position and current feedback and nonlinear observer

Over the last decade, the model-based position controllers have been investigated in an effort to extend the applicability of the active magnetic bearing (AMB) technology in rotating machinery. This work proposes a very efficient solution to improve the performance of the classical centralized model-based position controller. The article discusses the linear and nonlinear AMB controllers for rigid and flexible rotor models with position and current feedback signals. Streszczenie. Na przesterzeni ostatniego dziesieciolecia prowadzono badania centralnego sterowania ukladu zawieszenia magnetycznego w celu zwiekszenia zastosowan w aplikacjach maszyn wirujących. Praca ta proponuje skuteczne rozwiązanie, ktore poprawia sprawnośc klasycznego centralnego sterownika polozenia bazującego na modelu zmiennych stanu. W artykule przedstawione są sterowniki liniowe i nieliniowe dla sztywnego i elastycznego walu oparte na pomiarach polozenia i prądu. (Bazujące na modelu zmiennych stanu centralne sterowanie ukladu zawieszenia magnetycznego z pomiarami przemieszczen i prądow w sprzezeniu zwrotnym i z nieliniowym obserwatorem).
Nutrition-related histopathology of the intestine of milkfish Chanos chanos fry

A histopathological study was conducted on the intestine of milkfish larvae Chanos chanos, subjected to different nutritional conditions. Newly caught milkfish fry, ca 20 d old, were starved for 7 d and then fed with either Artemia nauplii or Chlorefla sp. The latter diet, as already shown in other studies, is detrimental to young milkfish. A third, control, group of fry was starved for a further 2 d. In larvae fed with Artemia, 1 to 2 h after feeding, intensive hpid absorption was noted m the first part of the intestine (Intestine I , lipid-absorbing zone, midgut). The second part of the intestine (Intestine 11, hmdgut) was characterized by pinocytotic activity and the presence of large supranuclear vacuoles. Food deprivation for 9 d resulted in cellular hydrahon, transformation of rmtochondria, disturbances of the basal labyrinth and appearance of autolytic vacuoles in enterocyte cytoplasm in Intestine I , with a proximo-distal gradient of severity of enterocytic degeneration. In Intestine 11, supranuclear vacuoles were replaced by dense bodies; pinocytotlc achvity was maintained at a reduced level. Microvllli were fragmented over the whole length of the intestine. Chlorella-fed larvae, although containing broken algae withln the gut lumen, displayed no signs of nutrient absorption as detectable by electron microscopy. In Intestine I, enterocytes contained bizarre nuclei, an enhanced number of lysosomes and occasionaLly large intracellular vacuoles. In addition, intercellular spaces were dilated. Mitochondria appeared pale and swollen throughout the gut. Histological alterations in Intestine I1 were similar to those for starved fry.
Firms’ Money Demand and Monetary Policy

Standard New Keynesian models for monetary policy analysis are "cashless". When the nominal interest rate is the central bank's operating instrument, the LM equation is endogenous and, it is argued, can be ignored. The modern theoretical and quantitative debate on the importance of money for the conduct of monetary policy, however, overlooks firms' money demand. Working in an otherwise baseline New Keynesian setup, this paper shows that the monetary policy transmission mechanism is critically affected by the firms' money demand choice. Specifically, we prove that equilibrium determinacy may require either an active interest-rate policy (i.e., overreacting to inflation) or a passive interest-rate policy (i.e., underreacting to inflation), depending on the elasticity of production with respect to real money balances. We then calibrate the model to U.S. quarterly data and develop a sensitivity analysis in order to investigate the quantitative implications of our theoretical results. We find that macroeconomic stability is more likely to be guaranteed under an active, although not overly aggressive, monetary-policy stance.
Analyzing Social Influence through Social Media: A Structured Literature Review

The emergence of social media enables billions of people to share their content and in doing so they influence others and are being influenced themselves. This virtual environment provides a new perspective for the current social influence theories. In this study, the state-of-the-art literature on social influence through social media is reviewed. We find that social influence metrics, influence maximization, mobilization, Word-Of-Mouth and Online Reputation Management are important trends in this field of research. Social influence is shown to have a big impact in social media, but the best way to measure, maximize and coordinate this influence is still to be found. Building on the analyzed literature, we present the Online Social Influence Model, which shows the steps that are necessary to manage social influence through social media. The current study can be valuable to both researchers and practitioners, by providing a starting point for further research and identifying opportunities to improve marketing practices.
Spin-off Process and the Development of Academic Entrepreneur's Social Capital

So far, there has been very little in-depth research on how the spin-off process contributes to the development of academic entrepreneurs’ social capital. In this inductive, exploratory and qualitative study, we examine eight academic entrepreneurship case studies. Based on our findings, we propose three mechanisms to explain the contribution of the spin-off process. They are the entrepreneurs´ affiliation with the university, the entrepreneurs´ immersion in the university´s network of relationships, and the new venture creation preparation given to the entrepreneurs by the university.