Miracle-dz/UniFAR-FTUs huggingface dataset:
Learning with Facilitation affordances: the Case of Citizens' Advice Services

How can employees be qualified to provide sound customer advisory services? How can they be empowered to deliver the value of public sector modernization to customers? In this paper, we offer a novel approach to qualify service personnel on-the-job using “facilitation affordances”. In this approach, artifacts, providing appropriately designed facilitation affordances, are introduced into service personnel’s work practices. These facilitation artifacts invite them to start experiential learning, and, hence, to improve their advice giving behavior. To develop our approach, we followed a design research approach, here we developed a set of design requirements and, ultimately, five design principles for facilitation artifacts. We tested our approach in the context of citizens’ advice services in public administrations. We implemented a prototype facilitation artifact and conducted a user study with six real-world advisors and twelve clients. Our preliminary results show that the “learning with facilitation affordances”-approach promises to enhance the service personnel’s skills that matter in modern public administrations. Furthermore, with the proposed qualification approach and the design principles for facilitation artifacts, we seek to deepen the knowledge on the importance of affordances for learning and, concurrently, provide practitioners with useful guidelines to implement the “learning with facilitation affordances”-approach in their organizations.
The feeding ecology of little auks raises questions about winter zooplankton stocks in North Atlantic surface waters

Copepods are essential components of marine food webs worldwide. In the North Atlantic, they are thought to perform vertical migration and to remain at depths more than 500 m during winter. We challenge this concept through a study of the winter feeding ecology of little auks (Alle alle), a highly abundant planktivorous seabird from the North Atlantic. By combining stable isotope and behavioural analyses, we strongly suggest that swarms of copepods are still available to their predators in water surface layers (less than 50 m) during winter, even during short daylight periods. Using a new bioenergetic model, we estimate that the huge number (20–40 million birds) of little auks wintering off southwest Greenland consume 3600–7200 tonnes of copepods daily, strongly suggesting substantial zooplankton stocks in surface waters of the North Atlantic in the middle of the boreal winter.
Molecular Characterization of Extended-Spectrum β-Lactamases Produced by Nosocomial Isolates of Enterobacteriaceae from an Italian Nationwide Survey

ABSTRACT Extended-spectrum β-lactamases (ESBLs) are widespread in hospital settings worldwide. The present investigation was undertaken to assess the distribution and prevalence of ESBLs belonging to the TEM and SHV families in 448 ESBL-producing clinical isolates of Enterobacteriaceae collected from 10 different Italian hospitals. The natures of TEM and SHV determinants were identified by direct sequencing of PCR-amplified genes. TEM-52 and SHV-12 were the most common variants, and they were found in most hospitals and in several different species. Other less frequent variants included TEM-5, TEM-12, TEM-15, TEM-19, TEM-20, TEM-24, TEM-26, TEM-43, TEM-60, TEM-72, TEM-87, SHV-2a, SHV-5, and SHV-11. Proteus mirabilis was the most common producer of TEM-type ESBLs, while Klebsiella pneumoniae was the most common producer of SHV-type ESBLs. The distribution of TEM- and SHV-type ESBL variants in Enterobacteriaceae from Italian hospitals exhibited notable differences from those from other geographical settings.
Monetary Policy and the Illusionary Exchange Rate Puzzle

Dornbuschâ€™s exchange rate overshooting hypothesis is a central building block in international macroeconomics. Yet, empirical studies of monetary policy have typically found exchange rate effects that are inconsistent with overshooting. This puzzling result has developed into a â€œstyled factsâ€ to be reckoned with in policy modelling. However, many of these studies, in particular those using VARs, have disregarded the strong contemporaneous interaction between monetary policy and exchange rate movements by placing zero restriction on them. By instead imposing a long-run neutrality restriction on the real exchange, thereby allowing the interest rate and the exchange rate to react simultaneously to any news, I find that the puzzles disappear. In particular, a contractionary monetary policy shock has a strong effect on the exchange rate that appreciates on impact. The maximum effect occurs immediately, and the exchange rate thereafter gradually depreciates to baseline, consistent with the Dornbusch overshooting hypothesis and with few exceptions consistent with UIP.
The War for Consumers’ Minds and Wallets: State vs. Industry Responses on Cigarette and Petroleum Consumption

The main objective of this article is to examine the empirical effect of state and industry responses on consumption of cigarettes and petroleum in the United States from 1998-2012. Upon facing consumption choices, the consumer faces two competing sets of messages, one from the government and another from the industry. The objective of the state is to steer consumption in the right direction due to the harmful effects from consumption and asymmetric information among consumers. This is done mainly via taxation and state media expenditures. The industry, on the other hand, seeks to incentivize the public to ignore or reject state research and signals as well as maximizing net economic returns. This is mainly done via industry media and lobbying expenditures. We find that the main results indicate for cigarettes, industrial media and lobbying expenditure is statistically significant on consumption. For petroleum, we find that producer prices, state media expenditure and industrial lobbying expenditure are statistically significant on consumption. While significant results are mainly seen for media and lobbying expenditures, no significant results are seen for taxation.
Estimating the tensor of curvature of a surface from a polyhedral approximation

Estimating principal curvatures and principal directions of a surface from a polyhedral approximation with a large number of small faces, such as those produced by iso-surface construction algorithms, has become a basic step in many computer vision algorithms, particularly in those targeted at medical applications. We describe a method to estimate the tensor of curvature of a surface at the vertices of a polyhedral approximation. Principal curvatures and principal directions are obtained by computing in closed form the eigenvalues and eigenvectors of certain 3/spl times/3 symmetric matrices defined by integral formulas, and closely related to the matrix representation of the tensor of curvature. The resulting algorithm is linear, both in time and in space, as a function of the number of vertices and faces of the polyhedral surface. <<ETX>>
Oxygen effects in anaerobic digestion - a review

This article reviews the experimental and theoretical studies conducted on the possible effects of oxygen in biogas generating anaerobic digesters. The interactions of oxygen with various biochemical processes associated with anaerobic digestion are discussed together with other relevant aspects. The conventional perception of oxygen being merely toxic in anaerobic digestion (AD) is refuted. Digesters can withstand significant levels of oxygenation without drastic negative impacts. Limited quantities of oxygen can even lead to improved AD reactor performance under certain operating conditions. Co-existence of anaerobic and aerobic cultures in a single bioreactor environment has been demonstrated. It is shown that the partial aeration assisted AD can serve as a beneficial treatment strategy for simultaneous waste treatment and energy generation, for a multitude of organic waste categories.
COLLAPSE BARRIERS AND HALO ABUNDANCE: TESTING THE EXCURSION SET ANSATZ

Our heuristic understanding of the abundance of dark matter halos centers around the concept of a density threshold, or “barrier,” for gravitational collapse. If one adopts the ansatz that regions of the linearly evolved density field smoothed on mass scale M with an overdensity that exceeds the barrier will undergo gravitational collapse into halos of mass M, the corresponding abundance of such halos can be estimated simply as a fraction of the mass density satisfying the collapse criterion divided by the mass M. The key ingredient of this ansatz is therefore the functional form of the collapse barrier as a function of mass M or, equivalently, of the variance σ2(M). Several such barriers based on the spherical, Zel'dovich, and ellipsoidal collapse models have been extensively discussed. Using large-scale cosmological simulations, we show that the relation between the linear overdensity and the mass variance for regions that collapse to form halos by the present epoch resembles expectations from dynamical models of ellipsoidal collapse. However, we also show that using such a collapse barrier with the excursion set ansatz predicts a halo mass function inconsistent with that measured directly in cosmological simulations. This inconsistency demonstrates a failure of the excursion set ansatz as a physical model for halo collapse. We discuss implications of our results for understanding the collapse epoch for halos as a function of mass, and avenues for improving consistency between analytical models for the collapse epoch and the results of cosmological simulations.
Modeling Urban Expansion and Agricultural Land Conversion in Henan Province, China: An Integration of Land Use and Socioeconomic Data

China has experienced rapid urban expansion and agricultural land loss, and the land conversion has accelerated in central provinces since the mid-1990s. The goal of this paper is to examine the relative importance of socioeconomic and policy factors on the urban conversion of agricultural land in Henan Province, China. Using panel econometric models, we examine how socioeconomic and policy factors affect agricultural land conversion at the county level across three time periods, 1995–2000, 2000–2005, and 2005–2010. The results show that both urban land rent and urban wages are essential factors that positively contribute to the conversion of agricultural land. It is also found that per capita GDP is correlated with more urban development and agricultural land loss. Consistent with expectations, agricultural financial support is negatively correlated with agricultural land conversion, suggesting a policy success. Finally, the decomposition analysis illustrates that urban wages are the most influential positive factor and agricultural financial support is the most influential negative factor affecting the urban conversion of agricultural land.
He's Variational Iteration Method for Solving Fractional Riccati Differential Equation

We will consider He's variational iteration method for solving fractional Riccati differential equation. This method is based on the use of Lagrange multipliers for identification of optimal value of a parameter in a functional. This technique provides a sequence of functions which converges to the exact solution of the problem. The present method performs extremely well in terms of efficiency and simplicity.
The Putative Endoglucanase PcGH61D from Phanerochaete chrysosporium Is a Metal-Dependent Oxidative Enzyme that Cleaves Cellulose

Many fungi growing on plant biomass produce proteins currently classified as glycoside hydrolase family 61 (GH61), some of which are known to act synergistically with cellulases. In this study we show that PcGH61D, the gene product of an open reading frame in the genome of Phanerochaete chrysosporium, is an enzyme that cleaves cellulose using a metal-dependent oxidative mechanism that leads to generation of aldonic acids. The activity of this enzyme and its beneficial effect on the efficiency of classical cellulases are stimulated by the presence of electron donors. Experiments with reduced cellulose confirmed the oxidative nature of the reaction catalyzed by PcGH61D and indicated that the enzyme may be capable of penetrating into the substrate. Considering the abundance of GH61-encoding genes in fungi and genes encoding their functional bacterial homologues currently classified as carbohydrate binding modules family 33 (CBM33), this enzyme activity is likely to turn out as a major determinant of microbial biomass-degrading efficiency.
Decoupling of Wage Growth and Productivity Growth? Myth and Reality

It is widely believed that in the US wage growth has fallen massively behind productivity growth. Recently, it has also been suggested that the UK is starting to follow the same path. Analysts point to the much faster growth of GDP per hour than median wages. We distinguish between "net decoupling" - the difference in growth of GDP per hour deflated by the GDP deflator and average compensation deflated by the same index - and "gross decoupling" - the difference in growth of GDP per hour deflated by the GDP deflator and median wages deflated by a measure of consumer price inflation. We would expect that over the long-run real compensation growth deflated by the producer price (the labour costs that employers face) should track real labour productivity growth (value added per hour), so net decoupling should only occur if labour's share falls as a proportion of gross GDP, something that rarely happens over sustained periods. We show that over the past 40 years that there is almost no net decoupling in the UK, although there is evidence of substantial gross decoupling in the US and, to a lesser extent, in the UK. This difference between gross and net decoupling can be accounted for essentially three factors (i) compensation inequality (which means the average compensation is growing faster than the median compensation), (ii) the wedge between compensation (which includes employer-provided benefits like pensions and health insurance) and wages which do not and (iii) differences in the GDP deflator and the consumer price deflator (i.e. producer wages and consumption wages). These three factors explain basically ALL of the gross decoupling leaving only a small amount of "net decoupling". The first two factors are important in both countries, whereas the difference in price deflators is only important in the US.
High Resolution Three-Dimensional Ultrasound Individual Grant Review Report

Freehand 3D ultrasound is acquired by attaching a position sensor to the probe of a conventional 2D diagnostic ultrasound machine. As the clinician moves the probe, its position and orientation is recorded with respect to some fixed datum. The 2D ultrasound images are also recorded. If both the images and the position readings are independently time-stamped then they can be matched up to create a set of 2D slices located in 3D space. Using 3D ultrasound, clinicians have access to visualisation and measurement techniques that are impossible using a normal probe.
Innovation systems, saving, trust, and economic development in Africa

The five essays in the dissertation explore the interaction between economic development in Africa and three economic concepts from different fields: decentralized agricultural innovation systems, trust and saving practices. A relatively new view to boost agricultural growth is the implementation of the innovation system approach. The Sub Saharan African Challenge Program adopted this approach through the development of local decentralized Innovation Platforms (IPs) in eight African countries. The first and the second essay respectively evaluate the impact of those platforms, on poverty and the adoption of agricultural technologies. The studies reach to mixed results concerning average impact on poverty and technology adoption. Some platforms promote the adoption of some innovations and reduce poverty level, and others do not (yet). The third essay complements these studies and investigates whether this difference in IP performance is because they may not have equally implemented the principles of the approach. The essay shows that IPs which performed better in human capacity development at the field, ceteris paribus, are more successful. Theory suggests that trust fosters economic development via reduced transaction costs and increased specialization. A vicious cycle may materialize if increased specialization, via increased market integration, also fosters trust. To shed light on the latter, the fourth essay studies whether increased market integration fosters trust by using a comprehensive survey of households living in West Africa in the early stages of market integration. The study identifies a negative and causal relationship between market integration and trust, which is contradictory to the theory. Having limited access to finance, entrepreneurs in developing countries have to utilize business profits or save in order to invest in their businesses. At the same time they keep their savings in multiple practices (e.g bank account, moneylender, etc.), which potentially may have different efficiency levels, and therefore may have varying effects on business investments. The fifth essay studies how different saving practices affect the likelihood of business profit reinvestment. The study shows that the practice of saving in a deposit account of a formal financial institution is more likely to facilitate reinvestment compared to the practice of keeping savings within the household.
Experiments linking nitrogenase gene expression to nitrogen fixation in the North Pacific subtropical gyre

We examined diazotroph activity in controlled experiments containing natural populations of nitrogen (N2)‐fixing microbes collected offshore from Kane'ohe Bay, Hawai'i, and from Station ALOHA (A Long‐term Oligotrophic Habitat Assessment) in the North Pacific subtropical gyre. Quantitative polymerase chain reaction and reverse transcription‐polymerase chain reaction approaches showed that the abundances of the major phylotypes did not change substantially during experimental incubations. Diel phasing of nifH gene expression in the experiments was similar to that documented for natural populations. Cell‐specific N2 fixation rates, calculated as 15N2 incorporation rate divided by specific phylotype abundance (gene copy number), varied between the experiments, but generally agreed with the abundance and levels of nifH expression of each group of diazotrophs. Phosphorus additions had little effect on the abundance, gene expression, or N2 fixation activity of diazotrophs across the course of the 36‐h experiments, indicating that other factors may limit the growth, gene expression, and activity of diazotrophs in the North Pacific subtropical gyre.
Mortel in Vitro Activity in Endometrial Carcinoma , Failure of Progestins to Induce Estradiol Dehydrogenase Updated

Estradiol dehydrogenase (E2DH) is a well-known progester one-dependent enzyme in human endometrium, and its induc tion has been proposed as a means to test hormonal sensitivity of endometrial carcinoma. While administration of progestins to some patients with endometrial carcinoma resulted in in creased endometrial E2DH activity, efforts to induce this en zyme, in vitro, in these tumors have been unsuccessful. The reasons for such failure were investigated in the present study. Progesterone receptor (PR) concentrations and E2DH activities were simultaneously measured in proliferative and malignant endometria under organ culture conditions. Cytoplasmic PR concentrations were determined by Scatchard plot analysis of [3H]progesterone binding in fresh samples and in tissue explants incubated in nutrient medium at 37Â°in a humidified 5% CO2 atmosphere for various periods of time. Parallel incuba tions of expiants with and without 500 ng medroxyprogesterone acetate per ml were carried out for monitoring E2DH induction. In proliferative endometrium, the progesterone-spe cific binding sites remained stable during the culture periods, and the E2DH activities were stimulated severalfold by medroxyprogesterone acetate. In contrast, the PR concentrations in carcinoma expiants were undetectable after a 24-hr period, and this was associated with a lack of increase in E2DH activity. These findings provide evidence that progestin-induced endo metrial E2DH activity is a receptor-mediated phenomenon. In addition, these results demonstrate clearly that the ineffective ness of progestin to induce E2DH in endometrial cancer spec imens, in vitro, is related to the instability of PR under culture conditions. It is suggested that any experiment designed to follow effects of steroids on target tissues must take into account the stability of steroid receptors under in vitro condi tions.
Evaluation of Fatigue Life of CRM-Reinforced SMA and Its Relationship to Dynamic Stiffness

Fatigue cracking is an essential problem of asphalt concrete that contributes to pavement damage. Although stone matrix asphalt (SMA) has significantly provided resistance to rutting failure, its resistance to fatigue failure is yet to be fully addressed. The aim of this study is to evaluate the effect of crumb rubber modifier (CRM) on stiffness and fatigue properties of SMA mixtures at optimum binder content, using four different modification levels, namely, 6%, 8%, 10%, and 12% CRM by weight of the bitumen. The testing undertaken on the asphalt mix comprises the dynamic stiffness (indirect tensile test), dynamic creep (repeated load creep), and fatigue test (indirect tensile fatigue test) at temperature of 25°C. The indirect tensile fatigue test was conducted at three different stress levels (200, 300, and 400 kPa). Experimental results indicate that CRM-reinforced SMA mixtures exhibit significantly higher fatigue life compared to the mixtures without CRM. Further, higher correlation coefficient was obtained between the fatigue life and resilient modulus as compared to permanent strain; thus resilient modulus might be a more reliable indicator in evaluating the fatigue life of asphalt mixture.
Complexity and Efficiency in Repeated Games and Negotiation

This paper considers the "negotiation game" (Busch and Wen, 1995) which combines the features of two-person alternating offers bargaining and repeated games. Despite the forces of bargaining, the negotiation game in general admits a large number of equilibria some of which involve delay in agreement and inefficiency. In order to isolate equilibria in this game, we explicitly consider the complexity of implementing a strategy, introduced in the literature on repeated games played by automata. It turns out that when the players have a preference for less complex strategies (even at the margin) only efficient equilibria survive. Thus, complexity and bargaining in tandem may offer an explanation for co-operation in repeated games
Commentary on David Morris' The Sense of Space

This is a complex and very well detailed book about our sense of space: what it is, how it develops, where it comes from, what it means to have it. Morris refers to experiences of space in everyday life, as well as scientific and philosophical literature, to elucidate the problem of the sense of space. He starts with a critique of the traditional approaches to space, then proposes his model, mainly centred on the notion of “body schema”, and finally analyzes two of the principal dimensions of space: depth and orientation. I will begin by summarizing what I consider to be the main topics of his book and then deal with the aspects that are important for studies on the conscious experience of space, as well as, more in general, for studies on consciousness.