Miracle-dz/UniFAR-FTUs huggingface dataset:
Learning-based authentication of Jackson Pollock's paintings

The abstract expressionist Jackson Pollock (1912–1956), nicknamed ‘Jack the Dripper,’ is one of America’s most important artists. He is best known for his ‘action’ paintings, executed by dripping, pouring, and splashing liquid paint onto horizontal canvases on the floor (see Figure 1). Many artworks of doubtful authorship (and some deliberate fakes) have been generated using this drip technique, however, such as the large, unsigned work Teri Horton purchased for $5.00 in a thrift shop in San Bernadino (CA) in the early 1990s. Although some art scholars have attributed this painting to Pollock, others have contested or rejected this notion. The feature documentary ‘Who the #$&% is Jackson Pollock? ’ focuses on this nearly two-decades-old debate, which—once resolved—will determine the work’s value at either $5 or $50,000,000. Art authentication based on signatures, provenance (the documentary record of ownership), chemical studies of media (e.g., oil or acrylic), material studies of support (e.g., paper or canvas), preparation (e.g., sizing), fingerprints, and traditional connoisseurship is not always definitive. Any additional informative objective test could thus be quite valuable. Physicist and painter Richard Taylor, inspired by the apparent range of scales of structures in Pollock’s drip paintings, pioneered the use of fractal-image analysis for authentication of Pollock’s works.1 A fractal is a mathematical construct that exhibits self-similarity, such as when parts of the object have nearly the same structure at a range of scales. Taylor estimated the fractal properties of Pollock’s works using a box-counting algorithm in which the image is divided into boxes of different sizes, and the fraction of boxes containing any paint of a given color is recorded. The slope of these data points in double-logarithmic space yields the painting’s fractal dimension. Taylor and colleagues reported that genuine Pollock paintings generally exhibit a characteristic Figure 1. Jackson Pollock’s ‘Convergence’ (1952), 237.5cm×393.7cm, oil on canvas. c © 2009 The Pollock-Krasner Foundation/Artists Rights Society (ARS), New York.
Guidelines for integrated planning and control of engineer-to-order prefabrication systems

The industrialization of construction processes is an important strategy for improving quality and productivity in construction. However, the adoption of industrialized technologies does not necessarily have a high impact in the overall performance of the production system. In fact, most papers on the implementation of Lean concepts and principles in prefabricated building systems have focused on a particular stage of the construction process, such as design, prefabrication or assembly. This paper is concerned with planning and controlling engineer-to-order (ETO) prefabricated systems, in which a single company is responsible for designing, and prefabricating components, and assembling them on site. This paper reports the preliminary results of an ongoing research project that aims to understand how the assembly process at the construction site can pull the prefabrication of components in a context with high variability. It is based on a study carried out at a steel fabricator company in which an integrated planning and control model has been developed, involving design, prefabrication and site assembly. This paper presents a set of guidelines for devising planning and control systems in such an environment.
Transfer of metals from crude oil impacted soils to some native wetland species, the Niger-delta, Nigeria: Implications for phytoremediation potentials

In this study, wetland species growing naturally in the surrounding of two crude oil facilities were sampled and screened for their phytoremediation potentials for zinc, lead, nickel, chromium and cadmium in soil. Concentrations of metals in the root and shoot samples of the wetland species alongside the rhizosphere soil were determined. Metal accumulation in wetland species exceeded the permissible limits, but it was still within phytotoxic thresholds except for chromium. The use of a bioconcentration factor and a transfer factor to screen the wetland species for phytoremediation potentials identified six out of the eight studied species as multi-elemental phytostabilizers of metals in soil. In addition, five of the eight wetland species displayed potentials for phytoextraction of metal, though there was no multi-elemental phytoextractor among the wetland species. Paspalum vaginatum, Andropogon tectorum and Kyllinga squamata portend potential abilities to phytoextract nickel. In addition, Setaria longiseta and Pteridium aquilinum also showed strong potential to phytoextract lead and cadmium respectively from soil. This screening assessment is hoped to be useful in the applications of a cost-effective green technology to remediate heavy metals in contaminated soil.
A survey of water maser emission toward ultracompact HII regions

In this paper we present high resolution images and spectra toward 21 H 2 O maser sources in the vicinity of ultracompact (UC) HII regions. This survey provides the basis for future studies with milli–arcsecond resolution, utilizing very long baseline interferometry (VLBI) techniques. Emission from the masing transition of interstellar H 2 O is observed in the close vicinity of UC HII regions with a median angular distance of and a median linear projected distance of pc from the continuum peak. We find that for UC HII regions with cometary morphology the water maser emission is located in front of the cometary arc whereas for non-cometary UC HII regions the water masers are often observed projected onto the contours of the ionized gas. Due to the large median distance of the water masers from the I-front of the UC HII region, it is unlikely, that the water masers are formed in the shocked layer of warm molecular gas in the interface between the ionized gas of the UC HII region and surrounding molecular gas which is predicted by the Bow Shock theory of UC HII regions. A comparison with maps in the NH 3 inversion transitions shows that in at least 7 cases, the water masers are associated with hot ( T K), dense ( n (Hcm -3 ) molecular clumps. For the UC HII regions G5.89-0.38 and G45.07+0.13 we find spatial and velocity correspondence between water masers and outflowing molecular gas. It is thus likely, that for these sources the H 2 O masers are taking part in the bipolar outflow.
A Review: Privacy Preservation in Cloud Environment Issues and Challenges

: Cloud computing is the fastest growing service delivery model which offers multi-tenancy on metric basis and the user of cloud need to pay only for which he use ,it also remove the burden of expanding rigid infrastructure with the company growth. The customer of cloud believes in hiring IT resources from providers as per demand and release it as they finish the job, The cloud services sits upon virtualization and its interfaces are open to all. However for cloud provider it’s a challenge for maintaining trust and to provide privacy preservation ,Also the customer end privacy is a prime concern. This paper made an attempt to review the research work related to privacy preservation in cloud environment and classify major issues and challenges .
Earnings Differences in the South Korean Labor Market: Decomposing the Gender Wage Gap, 1988-98

We examine gender differences in earnings among South Korean workers in 1988 and 1998. In 1988, the South Korean National Assembly enacted the Equal Employment Opportunity Act. Using OWS data, we explore the gender wage gap. Following Ronald Oaxaca's (1973) work, we decompose malefemale wage differentials. We also calculate a discrimination coefficient. Our work shows that gender earning differences decreased between 1988 and 1998. In 1988, men enjoyed a wage that was 208% of women's wages. In 1998, men earned a wage that was only 165% of women's wages. While men continue to earn a higher wage than women in South Korea. the wage gap has improved over time.
Running Head : THE COST OF WORKPLACE AGGRESSION A SYSTEMATIC REVIEW 2 The Financial Burden of Psychosocial Workplace Aggression

Understanding the economic impact of psychological and social forms of workplace aggression to society could yield important insights into the magnitude of this occupational phenomenon. The objective of this systematic review was to collate, summarize, review and critique, and synthesize the cost of psychosocial workplace aggression at the individualand societal-level. A peer-reviewed research protocol detailing the search strategy, study selection procedures and data extraction process was developed a priori. Both the academic and grey literatures were examined. To allow for basic comparison, all costs were converted and adjusted to reflect 2014 US dollars. Twelve studies, from five national contexts, met the inclusion criteria and were reviewed: Australia (n=2), Italy (n=1), Spain (n=1), the United Kingdom (n=3) and the United States (n=5). The annual cost of psychosocial workplace aggression varied substantially, ranging between $114.64 million and $35.9 billion. Heterogeneity across studies was found, with noted variations in stated study aims, utilized prevalence statistics and included costs. The review concludes that existing evidence attests to the substantial cost of psychosocial workplace aggression to both the individual and society, albeit such derived estimates are likely gross underestimates. The findings highlight the importance of interpreting such figures within their conceptual and methodological contexts.
Discrete Lagrangian mechanics and geometrically exact Cosserat rods

Inspired by Kirchhoff's kinetic analogy, the special Cosserat theory of rods is for- mulated in the language of Lagrangian mechanics. A static rod corresponds to an abstract Lagrangian system where the energy density takes the role of the Lagrangian function. The equilibrium equations are derived from a variational principle. Noether's theorem relates their first integrals to frame-indifference, isotropy and uniformity. These properties can be formulated in terms of Lie group symmetries. The rotational degrees of freedom, present in the geometri- cally exact beam theory, are represented in terms of orthonormal director triads. To reduce the number of unknowns, Lagrange multipliers associated with the orthonormality constraints are eliminated using null-space matrices. This is done both in the continuous and in the discrete setting. The discrete equilibrium equations are used to compute discrete rod configurations, where different types of boundary conditions can be handled.
Unwired business: wireless applications in the firm’s value chain

The convergence of wireless telecommunications and the Internet provides many exciting new possibilities for mobile networks. On their individual merits, the penetration of each technology in the developed world has already evoked changes in our daily lives – how we work, live and learn. Combined, the potential impact of the wireless Internet and related applications is immense. Until now, the literature on applications of the wireless Internet has predominantly focused on business-to-consumer markets, following the patterns in the media and e-commerce research. Notwithstanding this, it is now becoming clear that mobile networking will provide a tremendous impetus to the development of other strategic applications for businesses. This paper aims to explore how wireless network computing will create value in the business sector. The paper draws on a number of very recent and forthcoming wireless applications for organisational use. It examines the benefits and potential impact of wireless applications on the business. The paper concludes with some reflections on the future of mobile business applications in the firm.
Non-Parametric Approaches to Education and Health Efficiency in OECD Countries

We address the efficiency in education and health sectors for a sample of OECD countries by applying two alternative non-parametric methodologies: FDH and DEA. Those are two areas where public expenditure is of great importance so that findings have strong implications in what concerns public sector efficiency. When estimating the efficiency frontier we focus on measures of quantity inputs. We believe this approach to be advantageous since a country may well be efficient from a technical point of view but appear as inefficient if the inputs it uses are expensive. Efficient outcomes across sectors and analytical methods seem to cluster around a small number of core countries, even if for different reasons: Japan, Korea and Sweden.
Radio morphology and spectral analysis of cD galaxies in rich and poor galaxy clusters

Aims. We present a radio morphological study and spectral analysis of a sample of 13 cD galaxies in rich and poor clusters of galaxies. Methods. Our study is based on new high sensitivity Giant Metrewave Radio Telescope (GMRT) observations at 1.28 GHz, 610 MHz and 235 MHz, and on archival data. From a statistical sample of cluster cD galaxies we selected those sources with little information available in the literature and promising for the detection of aged radio emission. As well as the high sensitivity images for all 13 radio galaxies, we present also a detailed spectral analysis for 7 of them. Results. We found a variety of morphologies and linear sizes, as typical for radio galaxies in the radio power range sampled here (low to intermediate power radio galaxies). The spectral analysis shows that 10/13 radio galaxies have a steep radio spectrum, with spectral index α ≥ 1. In general, the radiative ages and growth velocities are consistent with previous findings that the evolution of radio galaxies at cluster centres is affected by the dense external medium (i.e. low growth velocities and old ages). We suggest that the dominant galaxies in A 2622 and MKW 03s are dying radio sources, which at present are not fed by nuclear activity. On the other hand, the spectacular source at the centre of A 2372 might be a very interesting example of a restarted radio galaxy. For this source we estimated a life cycle of the order of 10 6 yr.
Path Planning and Force Control of a 4 WD 4 WS Vehicle

The aim of this paper is to develop a system where forces at the wheels of a ground vehicle are controlled to guide the vehicle along a predetermined path. The 7-order Bézier curves are applied to path planning and path tracking, and provide profiles of velocities and accelerations for the mass centre of a 4WD4WS vehicle. The vehicle is considered to be a rigid body with known inertia and mass. The dynamic model used for force control is developed for the determination of the reference forces and steering angles at four independent wheels. The slip angles are also considered in the dynamic model built. The desired forces and steering angles obtained are then used to control the drive forces and the steering angles at individual wheels to guide the vehicle along the planned path. Simulation results are provided to validate the proposed methodology.
Is Google Search Behavior Related to Volatility? Incorporating Google Trends Data into a GARCH Model for Equity Volatility

Abstract Intuitively, one would expect that internet search volume would contain valuable information about investor sentiment for a company. With the development of new data sources, such as Google Trends, this relationship can be more easily and objectively examined. This paper seeks to examine the relationship between a company’s stock price volatility and its Google search volume. A small cross-section of twenty companies is considered, and the goal of this paper is to demonstrate the power of Google Trends data in hope of initiating further research. Using a conventional GARCH framework for financial market volatility, an economically and statistically significant contemporaneous relationship between Google search volume and equity volatility is found.
Exploration of Behaviour of a Stochastic Transport Model Using Computational Experiments

Fickian assumptions are used in deriving the advection-dispersion equation which models the solute transport in porous media. The hydrodynamic dispersion coefficient defined as a result of these assumptions has been found to be scale dependent. Kulasiri and Verwoerd [1999] developed a stochastic computational model for solute transport in saturated porous media without using Fickian assumptions. The model consists of two main parameters; correlation length and variance, and the velocity of solute was assumed as a fundamental stochastic variable. In this paper, the stochastic model was investigated to understand its behaviour. As the statistical nature of the model changes with the parameters, the computational solution of the model was explored in relation to the parameters. The variance is found to be the dominant parameter, however, there is a cOlTelation between two parameters and they influence the stochasticity of the flow in a complex manner. We hypothesised that the variance is inversely proportional to the pore size and the correlation length represents the geometry of flow. The computational results of different scales show that the hypotheses are reasonable. The model illustrates that it could capture the scale dependence of dispersivity and mimic the advection-dispersion equation in more deterministic situations.
Light-induced manipulation with surface plasmons

We review recent advances achieved in the field of surface plasmon-based optical manipulations. We first discuss enhanced optical forces at the surface of a flat metal film and their use for self-organizing a large number of micro-objects. We then show how a suitable engineering of plasmon fields near micro-gold pads enables trapping at a specific location with much weaker laser intensity compared to conventional optical tweezers. This part is illustrated by a series of numerical simulations based on the theory of the Green dyadic. Finally, we show that, beyond their low power requirement, this new generation of integrated optical tweezers offers new perspectives in optical manipulation including parallel trapping with a single beam and controllable selectivity on the object polarizability.
Fingerprints of biocomplexity: Taxon‐specific growth of phytoplankton in relation to environmental factors

Phytoplankton and environmental conditions in Lake Washington, Seattle, Washington, are discussed from the perspective of dynamic relationships between taxon‐specific growth rates and environmental variables. More than four decades of measurements permit inspection of conditions associated with net increase and decrease for 40 phytoplankton species or species groups. Reproducible patterns exist for growth responses to over 25 environmental factors including nutrient chemistry, physical variables, and herbivorous zooplankton species. There appear to be no more than six main modalities of response to environmental factors, and responses to chemical and physical variables show coherence across taxa. Diatoms show a near uniform positive growth response to abundant inorganic nutrients, cold and transparent water, deep mixing, and intolerance for virtually all zooplankton grazers. Many chlorophytes and cyanobacteria show equally uniform growth responses to chemical and physical variables, although their preferences are virtually opposite from the diatoms. They benefit from the presence of copepods but show highly specific growth rate responses to different cladocerans and rotifers. Growth rate variations among the diatoms sort out along gradients of resource and physical factors, but there is coherence to the rise and fall of multiple species. Among the other algal divisions, despite a common set of physical and chemical conditions that promote growth rates, the species do not increase and decrease together. Instead, the prevailing grazer community appears to shape the phytoplankton community by admitting only certain species from the large pool of contenders.
Revisiting the urban politics of climate change

In our 2005 paper, Rethinking Sustainable Cities, we made a case for the increasing significance of climate change in the urban politics of sustainability. Taking a multilevel governance perspective, we argued that the ‘urban’ governance of climate protection was not confined to a local arena or to the actions of the state, but rather was orchestrated through the interrelations between global, national and local actors across state/non-state boundaries. We revisit these arguments and examine their validity in the light of the rapidly changing landscape of urban responses to climate change and the growing academic literature in this field. We consider in turn: the ways in which climate change is shaping urban agendas; the utility of multilevel governance perspectives for understanding this phenomenon; and the extent to which we can identify a ‘new’ politics of urban climate change governance and its consequent implications for the development of theory and practice in this field.
Liver Enzymes Assay and Haematological Parameters of Bacteria Infected Guinea Pigs Fed with Probiotics

Some Lactobacillus species (L. acidophilus, L. casei and L. plantarum) were isolated from locally fermented products (ogi, fura de Nunu and wara) and their effect on microbial infections caused by some pathogenic bacteria (E.coli, K. pneumoniae, Pseudomonas aeruginosa and Staphyloccoccus aureus) isolated from urine and high vaginal swab samples were studied using standard micriobiological methods.Fifiteen (15) healthy guinea pigs used for the study were divided into three (3) groups of five (5) guinea pigs each and placed in three (3) different cages. The pigs were initially fed for two (2) weeks (acclimatization period) with conventional feeds before administering the treatment. Lactobacillus species were introduced into the guinea pigs in cage 2 after the acclimatization period. Subsequently, the guinea pigs in cages 1 and 2 were orally infected with all the clinical bacteria pathogens while the guinea pigs in cage 3 which served as control were left with no microbial treatment. Ten (10) days after treatment, the packed cell volume (PCV), haemoglobin concentration (HBC), alanine aminotransferase (ALT) and aspartate aminotransferase (AST) activity level were determined. Striking differences were observed from guinea pigs in the different cages. The effectiveness of Lactobacilli (probiotics) was evident when the guinea pigs in cages 1 and 2 were compared. The guinea pigs in cage 1 which were infected with pathogens but no probiotics had lower blood level (mean PCV= 24.8%) and inferior liver condition (mean ALT=58.18μl; mean AST=51.91μl). Higher blood level (Mean PCV=45%) and superior liver conditions (Mean ALT=9.51μl; mean AST=9.7μl) were obtained for guinea pigs in cage 2 which were infected with the same pathogens and fed with probiotics. The control (cage 3) had the highest PCV level and best liver conditions (mean PCV=46.6%, means ALT= 7.65μl; mean AST=11.83μl). Th . This might be attributed to the fact that they were not infected with pathogenic organisms. Lactobacillus species administered are promising probiotics against the tested bacterial pathogens.