Miracle-dz/UniFAR-FTUs huggingface dataset:
A physical model for wireless channels to provide insights for long range prediction

Algorithms that predict the wireless channel for up to a few wavelengths cannot be adequately tested with stationary models. Ray-tracing or FDTD methods do not provide insights into the relationship between reflector configurations and the performance of long-range prediction. Therefore, we present a novel model that: (1) creates non-stationary datasets to test our previously proposed adaptive long range prediction algorithm, which enables practical realization of adaptive transmission techniques; (2) classifies the reflector geometries that have typical or most severe parameter variations, so that the reflector configurations for test datasets can be appropriately chosen; (3) provides limits on the speed of adaptation needed for an algorithm to predict the channel significantly into the future, and thereby reveal the timing of future deep fades, etc.; (4) illuminates the origins of the temporal and statistical properties of measured data. The algorithm performs similarly on channels given by the physical model or actual measured data, but differently on a channel simulated by the stationary Jakes model. The insights of the model accurately describe the performance of the algorithm in several scattering environments when prediction is employed with adaptive power control and adaptive modulation. Moreover, we study limits of the long-range prediction at frequencies other than the observed frequency, of importance in correlated uplink and downlink transmission, orthogonal frequency division multiplexing (OFDM) and frequency-hopping systems.
REES MATRIX COVERS FOR LOCALLY INVERSE SEMIGROUPS

BYD. B. MCALISTERAbstract. A regular semigroup S is locally inverse if each local submonoid eSe, ean idempotent, is an inverse semigroup. It is shown that every locally inversesemigroup is an image of a regular Rees matrix semigroup, over an inversesemigroup, by a homomorphism 0 which is one-to-one on each local submonoid;such a homomorphism is called a local isomorphism. Regular semigroups which arelocally isomorphic images of regular Rees matrix semigroups over semilattices arealso characterized.
Habitat segregation between brown bears and gray wolves in a human‐dominated landscape

Abstract Identifying how sympatric species belonging to the same guild coexist is a major question of community ecology and conservation. Habitat segregation between two species might help reduce the effects of interspecific competition and apex predators are of special interest in this context, because their interactions can have consequences for lower trophic levels. However, habitat segregation between sympatric large carnivores has seldom been studied. Based on monitoring of 53 brown bears (Ursus arctos) and seven sympatric adult gray wolves (Canis lupus) equipped with GPS collars in Sweden, we analyzed the degree of interspecific segregation in habitat selection within their home ranges in both late winter and spring, when their diets overlap the most. We used the K‐select method, a multivariate approach that relies on the concept of ecological niche, and randomization methods to quantify habitat segregation between bears and wolves. Habitat segregation between bears and wolves was greater than expected by chance. Wolves tended to select for moose occurrence, young forests, and rugged terrain more than bears, which likely reflects the different requirements of an omnivore (bear) and an obligate carnivore (wolf). However, both species generally avoided human‐related habitats during daytime. Disentangling the mechanisms that can drive interspecific interactions at different spatial scales is essential for understanding how sympatric large carnivores occur and coexist in human‐dominated landscapes, and how coexistence may affect lower trophic levels. The individual variation in habitat selection detected in our study may be a relevant mechanism to overcome intraguild competition and facilitate coexistence.
Access to Healthcare, Utilization and Health Outcomes in Turkey

This paper examines the link between healthcare access/utilization and health outcomes in Turkey within a spatial framework. Our initial set of findings highlight an overall duality in health indicators which is getting stronger once spatial dimension is included. Specifically we find wider spatial dichotomy for health outcomes relative to access and utilization measures. Finally once we consider unobserved heterogeneity, spatial spillovers and spatial variability; our results pin point a non-robust link between healthcare access/utilization measures and health outcomes which works better among the already developed regions of Turkey. Overall our combined results indicate an ongoing polarization of health-based human capital development which coincides with local variations of the relationship between healthcare access/utilization and outcomes in Turkey.
The Impact of Money Attitudes on the Relationship Between Income and Financial Satisfaction

Prior research has showed that the subjective perception of objective wealth might be affected by various individual difference variables, such as one’s love of money, level of desires, or materialistic inclinations. This paper examines an impact of attitudes towards money on the relation between personal net income and household income, and its subjective evaluation, measured as financial satisfaction and subjective economic well-being. The results of two studies revealed that the affective dimension of money attitudes (assigning the symbolic meaning to money) partially mediated the relationship between income and financial satisfaction. Moreover, the instrumental dimension of attitude towards money (individuals’ attitude toward money management) moderated this relationship: The relationship between the two was stronger for individuals highly concentrated on money management than for those with low scores on this factor.
Corporate Governance and Firms' Market Values: Time Series Evidence from Russia

There is increasing evidence that broad measures of firm-level corporate governance predict higher share prices. However, almost all prior work relies on cross-sectional data. This work leaves open the possibility that endogeneity or omitted firm-level variables explain the observed correlations. We address the second possibility by offering time-series evidence from Russia for 1999-present, exploiting a number of available governance indices. We find an economically important and statistically strong correlation between governance and market value in OLS with firm clusters and in firm random effects and firm fixed effects regressions. We also find significant differences in the predictive power of different indices, and in the components of these indices. How one measures governance matters.
A bibliometric analysis of Lund University Publications

This master’s thesis is a bibliometric study of the institutional repository Lund University Publishing. The study aims to investigate the role of institutional repositories in open access publishing and to examine institutional repositories’ potential in describing research impact through the download statistics they provide for their open access material. The Swedish Research Council’s recent report on research evaluation in Sweden and the planned development of the SwePub national research database are impetus for a closer evaluation of institutional repositories in Sweden. Although related research has approached these topics before, the current thesis will do so uniquely by combining metadata and usage data from an institutional repository with citation analysis from Web of Science to better understand the role of institutional repositories in making research output available open access. The research output data of three faculties at the large, multidisciplinary higher education institution Lund University were examined for the study. The results of the bibliometric analysis showed a trend of increased proportions of publications available open access in the institutional repository from 2008 to 2012. There were however differences between the faculties, with the Faculty of Medicine and the Faculty of Engineering showing a marked increase in open access content while the Faculties of the Humanities and Theology showed no increase. No substantial correlation was found between downloads and citations, suggesting that downloads represent a unique indicator of open access research impact, potentially reflecting use of scholarly material by a user group other than researcher colleagues. Further studies will however be needed to investigate the meaning of usage data in the form of download statistics.
The impact of climate change and the social cost of carbon

The social cost of carbon is the marginal impact of climate change. Estimates of the total impact of climate change show that a century of climate change is about as bad as losing a decade of economic growth. Poorer countries are more vulnerable. The uncertainties are vast and skewed the wrong way. The many published estimates of the social cost of carbon span six orders of magnitude, and some studies find support for a carbon subsidy. There is mixed evidence for publication bias. Matlab code is used to illustrate key sensitivities of the social cost of carbon; readers can readily run their own analyses. The bulk of the published estimates suggests that carbon dioxide should be taxed somewhere between $20/tC and $400/tC, depending on the preferred rates of discount and risk aversion. Revealed preferences on carbon pricing are at the lower end of this range. The social cost of carbon rises at around 2% per year. The central estimate of the social cost of carbon has not moved much over the last two decades, but the range of estimates is tightening slowly.
H0LiCOW VIII. - A weak-lensing measurement of the external convergence in the field of the lensed quasar HE 0435−1223

We present a weak gravitational lensing measurement of the external convergence along the line of sight to the quadruply lensed quasar HE 0435-1223. Using deep r-band images from Subaru Suprime Cam, we observe galaxies down to a 3 sigma limiting magnitude of similar to 26 mag resulting in a source galaxy density of 14 galaxies per square arcminute after redshift-based cuts. Using an inpainting technique and multiscale entropy filtering algorithm, we find that the region in close proximity to the lens has an estimated external convergence of kappa = -0.012(-0.013)(+0.020) and is hence marginally underdense. We also rule out the presence of any halo with a mass greater than M-vir = 1.6 x 10(14)h(-1)M(circle dot) (68 per cent confidence limit). Our results, consistent with previous studies of this lens, confirm that the intervening mass along the line of sight to HE0435-1223 does not affect significantly the cosmological results inferred from the time-delay measurements of that specific object.
Giving Time and/or Money: Trade-off or Spill-over?

The relation of giving money to charitable causes and volunteering for an association is examined in a sample of 612 respondents living in The Netherlands. In contrast to the expectation that check writing activism is used as a compensation for a lack of active involvement in civil society, volunteers were more likely to give to charitable causes than non-volunteers were. Volunteers also donated more money than non-volunteers did. Volunteers contributed mainly to charities in the sector in which they volunteered, but also some spill over - effects were found: volunteers in the health sector, in religious organisations and in sports clubs were more likely to donate to charities outside their ‘own’ sector. However, multivariate analyses, controlling for the main determinants of volunteering and giving to charitable causes, did not reveal any effects of volunteering on charitable donations. Giving and volunteering are complementary behaviors, arising from roughly the same social factors.
A complete methodology for the quality control of passenger services in the public transport business

The quality of the services provided to the passengers is synonymous with a wide range of characteristics of the transportation system, such as safety, on-time performance, accessibility, efficiency, and many others. Today, more and more public transport operators and associated bodies (e.g. ministries and supervising organizations) worldwide invest in quality control programs in order to assess and improve the services provided to the passengers. The paper provides an overview of the Methodology developed by the Hellenic Institute of Transport to assess the levels of quality and performance of public transport services. Key results from the application of this Methodology to the major public transport organization in Greece (OASA) are provided as a case study.
Generic spectral properties of measure-preserving maps and applications

Let X denote the group of all automorphisms of a finite Lebesgue space equipped with the weak topology. For T E A, let UrT denote its maximal spectral type. Theorem 1. There is a dense G3 subset G c X such that, for each T E G and k(1), . k(l) E Z+, k'(1), . , k'(l') E Z+, the convolutions UTk(1) * * UTk(U) and a TkI(1) *. * UTkO(1) are mutually singular, provided that (k(1) . k(l)) is not a rearrangement of (k'(1), . , k'(l')). Theorem 1 has the following consequence. Theorem 2. X has a dense G3 subset F c G such that for T E F the following holds: For any k: N -. Z {O} and 1 E Z {O}, the only way that TI, or any factor thereof can sit as a factor in T k(l) x T k(2) X *. * is inside the ith coordinate c-algebra for some i with k(i) = 1 . Theorem 2 has applications to the construction of certain counterexamples, in particular nondisjoint automorphisms having no common factors and weakly isomorphic automorphisms that are not isomorphic.
Three dimensional numerical study on a trapezoidal microchannel heat sink with different inlet/outlet arrangements utilizing variable properties nanofluid

Nowadays, microchannels as closed circuits channels for fluid flow and heat removal are an integral part of the silicon-based electronic microsystems. Most of previous numerical studies on microchannel heat sinks (MCHS) have been performed for a two-dimensional domain using constant properties of the working fluid. In this study, laminar fluid flow and heat transfer of variable properties Al2O3-water nanofluid in a trapezoidal MCHS, consisted of five trapezoidal microchannels have been studied. The three dimensional solution domains include the whole flow field and the complete MCHS solid parts. Four inlet/outlet arrangements, three pressure drops of 5, 10 and 15 kPa and nanoparticles volume fractions between 0 and 4% are assumed and the effects of these arrangements, properties variations and the Brownian motion on the heat sink performance quantified. The results indicate that the A-type heat sink, for which the inlet and outlet are placed horizontally at the center of the north and the south walls, has a better heat transfer performance, smaller thermal resistance and provides more uniform substrate temperature distribution. Temperature-dependent properties increases the heat transfer between 2.7% and 3.39%, decreases the thermal resistance between 3.49% and 6.29 % and decreases the ratio of difference between the maximum and minimum substrate temperatures to the heat flux between 3.3% and 7.19%. Presence of the Brownian motion showed a similar trend but with a slighter importance.
Underwater Noise Generated by a Small Ship in the Shallow Sea

Study of the sea noise has been a subject of interest for many years. The first works in this scope were published at the turn of the twentieth century by Knudsen (Knudsen et al., 1948) and G. Wenz (Wenz, 1962). Disturbances called “shipping noise” are one of the important components of the sea noise. In this work the results of an experimental research of underwater noise produced by a small ship of a classic propulsion are presented. A linear receiving antenna composed of two orthogonal components was used in the investigation. Identification of the main sources of acoustic waves related with the ship was achieved. In addition, the intensity of the wave was measured. The research was performed in conditions of the shallow sea.
A New FDI Potential Index: Design and Application to the EU Regions

Abstract The aim of this paper is to propose a new way of computing the FDI Potential Index to address the issue of FDI attractiveness at the EU regional level. This new index employs a sound way of selecting the variables involved in its construction, for which a factor analysis is performed. Accordingly, six factors (“economic potential”, “market size”, “labour situation”, “technological progress”, “labour regulation” and “competitiveness”) are identified. Next, by applying the methodology of composite indicators and considering different weighting and aggregation schemes, three versions (un-weighted linear, weighted linear and weighted geometric) of the new FDI Potential Index are computed. Afterwards, the comparison of the weighted linear version of the Potential Index with the conventional FDI Performance Index allows us to apply the United Nations Conference on Trade and Development (UNCTAD) FDI typology. The results reveal considerable heterogeneity among EU regions in terms of FDI attractiveness, and that regions belonging to the same group of the UNCTAD classification are highly concentrated from a geographical perspective. In view of these findings, we compute an additional version of both the FDI Potential and Performance indices, in which the geographical location of each region plays a key role. Based on these spatial indices, some general policy implications are drawn.
The Impact of E-commerce Adoption on Operating Cost : An Empirical Study of Taiwanese Manufacturing Firms

Using a constructed panel dataset on electronic commerce by Taiwanese manufacturing firms covering the 1999-2002 period, this paper explores the impact of the adoption of electronic commerce on operating cost taking network externalities into consideration. Besides the general specification of the e-commerce adoption function, we consider the endogenous binary variable of e-commerce adoption by applying the treatment effects model. We also evaluate the differences in cost saving between firms that adopt and do not adopt e-commerce with the following split data: small and medium and large, and high-tech and traditional firms. The empirical results show that: (1) the firms with larger firm size, higher ratios of the number of electronic technology applications, higher intra-industry network externalities, higher productivity and later timing are more likely to adopt e-commerce; (2) the adoption of e-commerce has an influence on cost savings, particularly for larger firms in high-tech industries.
Can Irrigation Water Use Be Guided by Market Forces? Theory and Practice

This paper provides insight into the relevance of market forces to typical problems found in irrigated agriculture. It first considers the theoretical basis for the use of economic instruments, such as volumetric water charges and tradable water rights, then considers their usefulness in the context of five case studies of irrigated areas, in Egypt, India, Indonesia, Morocco and Ukraine. The case studies confirm that competition for scarce water and shortage of funds are widespread. To assess the suitability of economic instruments to achieve water management objectives, insight is provided into the current price paid for irrigation water, the cost of service provision and the value to irrigators. It becomes clear that there is a big gap between the price and value of irrigation water. This means that a considerable increase in the price of water is needed to balance supply and demand, which would reduce farm economic welfare substantially. This socio-political problem, plus the technical and administrative complexity of measuring water, make water pricing an unsuitable approach to balance supply and demand.
Robust Preview Control for a Class of Uncertain Discrete-Time Lipschitz Nonlinear Systems

This paper considers the design of the robust preview controller for a class of uncertain discrete-time Lipschitz nonlinear systems. According to the preview control theory, an augmented error system including the tracking error and the known future information on the reference signal is constructed. To avoid static error, a discrete integrator is introduced. Using the linear matrix inequality (LMI) approach, a state feedback controller is developed to guarantee that the closed-loop system of the augmented error system is asymptotically stable with H∞ performance. Based on this, the robust preview tracking controller of the original system is obtained. Finally, two numerical examples are included to show the effectiveness of the proposed controller.
Investigating Supply Chain Cooperation in Finnish Grocery Retail

This paper explores how a cooperative approach to supply chain management enhances supply chain performance under fluctuating demand and uncertainty in the grocery retail sector. The exploratory and qualitative empirical study comprises a two-echelon case study of a Finnish grocery retail supply chain focussing on a grocery wholesaler and its tier 1, small retail customers. Interviews were conducted with key respondents at both echelon levels and it was found that cooperation can be a useful and successful technique to reduce costs and improve supply chain performance in a volatile and uncertain demand context. A list of enablers and barriers for supply chain cooperation were developed to guide practitioners and there is a brief discussion of this study’s implications for Poland.
Molecular evidence for mid-Pleistocene divergence of populations of three freshwater amphipod species (Talitroidea : Chiltoniidae) on Kangaroo Island, South Australia, with a new spring-associated genus and species

Abstract. Recent molecular and morphological analyses have shown that chiltoniid amphipods, once thought to be a relictual group, are a diverse and speciose family of Australian freshwater amphipods. As part of a larger examination of the family, chiltoniids from Kangaroo Island in South Australia were collected and analysed using molecular (COI and 28S) and morphological methods in order to understand species distributional patterns and relationships. Kartachiltonia moodyi gen. nov., sp. nov., a spring-associated species endemic to the island, was discovered and populations of three additional mainland species (Austrochiltonia australis, A. dalhousiensis and A. subtenuis) were examined. The island populations of A. australis, A. dalhousiensis and A. subtenuis were found to form natural groups with differing haplotype coalescence times dating from the Early to Mid-Pleistocene. Numerous cycles of regional climate change throughout the Pleistocene are likely to have driven speciation in chiltoniid amphipods in southern Australia and the presence of multiple chiltoniid species at Kangaroo Island indicates that it exists at a likely convergence of species distribution patterns. Three possible hypotheses to explain the evolution and diversity of chiltoniids in southern Australia are discussed as are evidence for potential introduction and long-distance dispersal events.