Miracle-dz/UniFAR-FTUs huggingface dataset:
Secret sharing schemes arising from latin squares

A critical set in a latin square is a partial latin square which has a unique completion. In this paper we demonstrate how critical sets can be used in the design of secret sharing schemes. Disciplines Physical Sciences and Mathematics Publication Details Joan Cooper, Diane Donovan, Jennifer Seberry, Secret sharing schemes arising from latin squares, Bulletin of the Institute of Combinatorics and its Applications, 12, (1994), 33-43. This journal article is available at Research Online: http://ro.uow. edu.au/infopapers/1096 Secret Sharing Schemes Arising From Latin Squares Joan Cooper* Department of Information and Communication Technology University of Wollongong Wollongong, 2500, Australia Diane Donovan t Centre for Combinatorics Mathematics Department The University of Queenland Brisbane, 4072, Australia Jennifer Seberry* Computer Science Department University of Wollongong Wollongong, 2500, Australia ABSTRACT. A critical set in a latin square is a partial,. latin square which has a unique completion. In this paper we demonstrate how critical sets can be used in the design of secret sharing schemes. A critical set in a latin square is a partial,. latin square which has a unique completion. In this paper we demonstrate how critical sets can be used in the design of secret sharing schemes.
Pressure induced BEC-BCS crossover in multi-band superconductors

Superconductivity in strongly correlated systems is a remarkable phenomenon that attracts a huge interest. The study of this problem is relevant for materials as the high $T_c$ oxides, pnictides and heavy fermions. These systems also have in common the existence of electrons of several orbitals that coexist at a common Fermi-surface. In this paper we study the effect of pressure, chemical or applied on multi-band superconductivity. Pressure varies the atomic distances and consequently the overlap of the wave-functions in the crystal. This rearranges the electronic structure that we model including a pressure dependent hybridization between the bands. We consider the case of two-dimensional systems in a square lattice with inverted bands. We study the conditions for obtaining a pressure induced superconductor quantum critical point and show that hybridization, i.e., pressure can induce a BCS-BEC crossover in multi-band systems even for moderate interactions. We briefly discuss the influence of the symmetry of the order parameter in the results.
The Syntax of Applicative Constructions in Spoken Sudanese Arabic

Different languages have different means for structuring clauses which allow the coding of a thematically peripheral argument or adjunct as a core-object argument. The resulting constructions are known as double object or applicative constructions. The primary aim of this paper is to present a syntactic analysis of applicative constructions in Sudanese Arabic within the theoretical framework of the Minimalist Program (Chomsky, 1993, 1995) , in particular, the notion of phases, in combination with Pylkkanen's proposed phrase structure and the semantics of I-applicative (2000, 2008) . The overall endeavor is to provide answers to the central questions: how applicatives in Sudanese Arabic are derived? Whether applicatives in Sudanese Arabic are I-applicatives or E-applicatives? The derivation of such constructions in Sudanese Arabic involves the coding of new argument in the argument structure of the verb. This new argument is introduced via a preposition and has a benefactive/goal interpretation. This argument is c-commanded by any internal argument. The applied argument is placed in the complement position of the head ApplI, and can undergo neither A-movement nor wh-movement. This makes Sudanese Arabic fit into the general syntactic typology of I-type applicative languages cross-linguistically and consequently promoting contrastive linguistics. Keywords: Applied argument; applicative construction; minimalist program; spoken Sudanese Arabic; syntax
Examples of renormalization group transformations for image sets

Using the example of configurations generated with the worm algorithm for the two-dimensional Ising model, we propose renormalization group (RG) transformations, inspired by the tensor RG, that can be applied to sets of images. We relate criticality to the logarithmic divergence of the largest principal component. We discuss the changes in link occupation under the RG transformation, suggest ways to obtain data collapse, and compare with the two state tensor RG approximation near the fixed point.
Indoor/Outdoor Air Quality Assessment at School near the Steel Plant in Taranto (Italy)

This study aims to investigate the air quality in primary school placed in district of Taranto (south of Italy), an area of high environmental risk because of closeness between large industrial complex and urban settlement. The chemical characterization of PM2.5 was performed to identify origin of pollutants detected inside school and the comparison between indoor and outdoor levels of PAHs and metals allowed evaluating intrusion of outdoor pollutants or the existence of specific indoor sources. The results showed that the indoor and outdoor levels of PM2.5, BaP, Cd, Ni, As, and Pb never exceeded the target values issued by World Health Organization (WHO). Nevertheless, high metals and PAHs concentrations were detected especially when school were downwind to the steel plant. The ratio showed the impact of outdoor pollutants, especially of industrial markers as Fe, Mn, Zn, and Pb, on indoor air quality. This result was confirmed by values of diagnostic ratio as B(a)P/B(g)P, IP/(IP + BgP), BaP/Chry, and BaP/(BaP + Chry), which showed range characteristics of coke and coal combustion. However, Ni and As showed ratio of 2.5 and 1.4, respectively, suggesting the presence of indoor sources.
Picking Up the Pieces: Caregivers of Adolescents Bereaved by Parental AIDS

This study describes caregivers of adolescents whose parents died of AIDS and examines how caregivers perceive the impact of raising bereaved adolescents. For adolescents bereaved by AIDS, 65 non-parental caregivers were recruited and assessed twice over 6 months. Most caregivers (89%) were female members of the extended family, 49% were married and 29% were employed. Caregivers were older and more likely to be employed than parents with HIV (PWH), but were similar in ethnicity, partnership and financial status, and religiosity. Caregivers had generally been selected by the parent prior to death (66%) and most caregivers (75%) had at least moderate involvement in the care of the youth prior to parental death. Caregiver–youth relationships were stable (91%) over a 6-month period. Caregivers were significantly less emotionally distressed than PWH had been. Caregiver burden was rated as moderate; the number of positive caregiver–youth relationships decreased significantly over 6 months. Family caregiving is a common, ongoing and stable relationship in families coping with AIDS.
Conference Summary: Canada in the Global Economy

The Bank of Canada's 2004 research conference examined the real and financial linkages between the Canadian economy and the economies in the rest of the world. Although Canada has profited enormously from its openness to international trade in goods, services, and financial assets, many of the most significant shocks to the Canadian economy in recent years have come from abroad. For these reasons, understanding the extent and nature of the external linkages, their implications for the Canadian economy, and the process by which the Canadian economy adjusts to external shocks is of critical importance both for monetary policy and for monitoring the financial system. This article describes the purpose of the conferenceto deepen economists' understanding of these important issuesand provides highlights of the papers presented in each of the five sessions, as well as summaries of the keynote lecture and the discussion of the policy panel.
Investigation the Effect of Abscisic Acid on Drought Stress Induction in Wheat Seedling

Wheat is the most important plant that always has suffered from drought stress (Q������ et al. 1980). Most research that has been done on drought stress in plant, show that ABA increases in plant cultures after stress (Q������ et al. 1977). In this research we performed three separate experiments in a randomized complete block design with three replications. In the first experiment, the effect of PEG on six cultivars (Sardari, Azare2, Kavir, Tabasi, Gaspard and Meroa) was invested. We measured shoot length, root length, cleoptile length, root/shoot length ratio, root/cleoptile length ratio, shoot fresh weight, shoot dry weight, root fresh weight, relative water content, germination rate and germination percentage. Bases on the measured traits, Azare2 and Sardari were the most resistant and Gaspard was the most susceptible cultivar. In this experiment we used six levels of PEG and in the second experiment the same cultivars were used in field with and without stress in complete randomized block design and 4 replications in each condition. After harvesting performance also SSI, TOL, MP, STI, GMP and HARM were measured and used to introduce the most resistance and sensitive cultivars by cluster analysis. In third experiment we used six levels of PEG and four levels of ABA on Sardari and Gaspard and measured shoot length, root length, cleoptile length, root /shoot length ratio, root /cleoptile length ratio, shoot fresh weight, shoot dry weight, root fresh weight, relative water content, relative water and germination percentage . In third experiment there was significant difference among cultivars for PEG and there were not significant difference for ABA. Sardari cultivar responded better than Gaspard to PEG levels.
Family Matters: Rankings within Fund Families and Fund Inflows

This paper examines the influence of the position of a fund within its family on its subsequent net-inflows. Our empirical study of the US equity mutual fund market shows that reaching a top position within the family leads to large inflows. These inflows accrue beyond those expected, given the performance of the fund in its respective market segment. The effect is much stronger in large families than in small families. We also find that inflows significantly increase if a fund moves into the top positions within its family from one year to another. These results lead to competition within the fund family and to important risk taking incentives for fund managers.
In vitro bioactivity of polymer matrices reinforced with a bioactive glass phase

Composites that can mimic the in vitro bioactive behavior of bioactive glasses were designed to fulfill two main features of bioactive glasses that are responsible for their high bond-to-bone rates: (1) capability of providing ions such as calcium and phosphate to the nearby environment and (2) ideal surface structure that allows fast heterogeneous precipitation of hydroxy-carbonate-apatite (HCA). The novel composites were prepared by incorporating bioactive glass particles into polymer matrices. The in vitro bioactivity test was performed by introducing samples into a buffered solution as well as into a simulated body fluid solution. FTIR was used to evaluate the kinetics of HCA (hydroxy-carbonate-apatite) precipitation. The results showed that the obtained composites can supply ions, such as silicates and phosphates in rates and concentrations comparable or superior than bulk bioactive glasses. Moreover, the surface chemistry of the composites was altered to mimic the surface of bioactive glasses. It was demonstrated that the in vitro bioactivity of the composites was enhanced by chemically modifying polymer surfaces through the introduction of special alkoxysilane groups.
Sentiment Analysis of Spanish Words of Arabic Origin Related to Islam: A Social Network Analysis

With the arrival of Muslims in 711 till their expulsion in the 1600s, Arabic language was present in Spain for more than eight centuries. Although social networks have become a valuable resource for mining sentiments, there is no previous research investigating the layman’s sentiment towards Spanish words of Arabic etymology related to Islamic terminology. This study aim at analyzing Spanish words of Arabic origin related to Islam. A random sample of 4586 out of 45860 tweets was used to evaluate general sentiment towards some Spanish words of Arabic origin related to Islam. An expert-predefined Spanish lexicon of around 6800 seed adjectives was used to conduct the analysis. Results indicate a generally positive sentiment towards several Spanish words of Arabic etymology related to Islam. By implementing both a qualitative and quantitative methodology to analyze tweets’ sentiments towards Spanish words of Arabic etymology, this research adds breadth and depth to the debate over Arabic linguistic influence on Spanish vocabulary.
Interpersonal Entrainment in Dancers: Contrasting Timing and Haptic Cues

We examined the nature of interpersonal synchrony mediated by light touch when individuals rhythmically sway side by side at their own pace, same or different externally imposed tempos. Three types of couples participated in two experiments; dancer couples, non dancer couples, and mixed couples. Spectral analysis of the sway signals revealed that fingertip touch evoked interpersonal synchronization during self-paced sway. During metronome paced sway only dancers further increased synchronization suggesting a more efficient integration of tactile and timing cues. In a subsequent experiment, we asked whether dancers are able to suppress the spontaneous tendency towards entrainment when the two partners sway at different tempos. Touch evoked interpersonal entrainment only in mixed couples whereas touch interference was weaker in novices and absent in experts. All together, these results suggest that light fingertip touch evokes spontaneous interpersonal entrainment that is stronger when provided by a dancer who has developed the ability to modulate the self-organized properties of inter-personal entrainment.
Corticosterone administration leads to a transient alteration of foraging behaviour and complexity in a diving seabird

Hormones link environmental stimuli to the behavioural and/or physiological res - ponses of organisms. The release of corticosterone has major effects on both energy mobilization and its allocation among the various requirements of an individual, especially regarding survival and reproduction. We therefore examined the effects of experimentally elevated baseline corti - costerone levels on the foraging behaviour of Adelie penguins Pygoscelis adeliae during chick- rearing. We monitored the at-sea behaviour of corticosterone-implanted and control male birds using time-depth recorders, and monitored the effects of corticosterone treatment on their body conditions as well as their chicks' body masses and survival. Bio-logged data were examined via traditional measures of diving behaviour as well as fractal analysis as an index of behavioural complexity. Corticosterone administration caused a transient decrease in both overall foraging effort (i.e. reductions in the duration of at-sea trips, the time spent diving and the number of dives performed) and foraging complexity. In contrast, per-dive performance indices suggested an increase in both efficiency and prey pursuit rates. Ultimately, however, we observed no short-term effects of treatment on adult body condition and chick body mass and survival. We conclude that under higher corticosterone levels, sequences of behaviour may become more structured and periodic, as observed in treated birds. The increased energy allocation to dive-scale behaviours observed in treated birds might then reflect an adjustment to intrinsic constraints allowing reduc- tions in energy expenditure at the trip-scale. This study highlights the utility of using both tradi- tional and fractal analyses to better understand scale-dependent responses of animals to energetic and various other environmental challenges.
The Use of Contact Time and the Reactive Strength Index to Optimize Fast Stretch-Shortening Cycle Training

THIS ARTICLE REVIEWS RESEARCH RELATING TO THE STRETCH-SHORTENING CYCLE AND PLYOMETRICS. THE ARTICLE INSTRUCTS STRENGTH AND CONDITIONING PRACTITIONERS IN THE USE OF GROUND CONTACT TIMES AND THE REACTIVE STRENGTH INDEX IN PLYOMETRIC TRAINING. DOCUMENTATION ON HOW THESE MEASUREMENTS CAN BE USED TO OPTIMIZE PLYOMETRICS AND TO IMPROVE ATHLETES' FAST STRETCH SHORTENING CYCLE PERFORMANCE IS PROVIDED. RECOMMENDATIONS ARE MADE REGARDING THE USE OF GROUND CONTACT TIMES TO IMPROVE TRAINING SPECIFICITY AND THE USE OF THE REACTIVE STRENGTH INDEX TO OPTIMIZE PLYOMETRICS, TO MONITOR TRAINING PROGRESS, AND TO SERVE AS A MOTIVATIONAL TOOL. A 4-STEP PROGRESSION OF IMPLEMENTATION IS DETAILED.
Promoting forest conservation through ecotourism income

A principal criterion for classifying a tourism operation as 'ecotourism' is that local residents at the site should receive substantial economic benefits, which serve both to raise local living standards and as enhanced incentives for nature conservation. This paper sets out a methodological framework for analysis of the alleged participation-income-conservation link, and applies it to the Cuyabeno Wildlife Reserve in the Ecuadorian Amazon region. Three Cuyabeno ethnic groups involved in tourism, the Quichuas, Siona-Secoyas and Cofans, are characterised by different tourism participation models, ranging from autonomous operations to pure salary employment. Results do not support the frequently held belief that autonomous operations are 'better off' by yielding higher local benefits; rather, income size is determined by the site-specific degree of tourism specialisation, which largely depends on the tourist appeal and level of conservation of the natural site. Annual tourism cash flows are found to be much higher than previously estimated (from US$ 15 000-50 000 per village), which represents a significant rise in local purchasing power. In terms of conservation incentives, this study confirmed that income from tourism tends to change local attitudes and behaviour, such as reducing overexploitation, creating 'untouchable' zones and user quotas. The more autonomous the operation, the more incentive exists to rationalise resource use. Also, the mere fact that labour time is invested in tourism leaves less opportunity for hunting and other activities that may have been practised unsustainably in the past. Further, tourism income helps to protect the Cuyabeno Reserve against important external threats, such as oil drilling and squatter colonisation. Recommendations include proposals for gradually augmenting local participation, strengthening both incentives and tourist operations in the fields of food production, handicrafts and the training of local tourist guides. Even with these safeguards, the nexus of social-economic-environmental change will often come in clusters that make it impossible to distinguish between 'desirable' and 'undesirable' impacts, in the unambiguous manner suggested by the axioms of ecotourism.
Bayesian parameter estimation and interpretation for an intermediate model of tree-ring width

Abstract. We present a Bayesian model for estimating the parameters of the VS-Lite forward model of tree-ring width for a particular chronology and its local climatology. The scheme also provides information about the uncertainty of the parameter estimates, as well as the model error in representing the observed proxy time series. By inferring VS-Lite's parameters independently for synthetically generated ring-width series at several hundred sites across the United States, we show that the algorithm is skillful. We also infer optimal parameter values for modeling observed ring-width data at the same network of sites. The estimated parameter values covary in physical space, and their locations in multidimensional parameter space provide insight into the dominant climatic controls on modeled tree-ring growth at each site as well as the stability of those controls. The estimation procedure is useful for forward and inverse modeling studies using VS-Lite to quantify the full range of model uncertainty stemming from its parameterization.
Weak localization in transition metal dichalcogenide monolayers and their heterostructures with graphene

We calculate the interference correction to the conductivity of doped transition metal dichalcogenide monolayers (TMDC). Because of the interplay between valley structure and intrinsic spin-orbit coupling (SOC), these materials exhibit a rich weak localization (WL) behavior that is qualitatively different from conventional metals or similar two-dimensional materials such as graphene. Our results can also be used to describe graphene/TMDC heterostructures, where the SOC is induced in the graphene sheet. We discuss new parameter regimes that go beyond existing theories, and can be used to interpret recent experiments in order to assess the strength of SOC and disorder. Furthermore, we show that an in-plane Zeeman field can be used to distinguish the contributions of different kinds of SOC to the WL magnetoresistance.
The Cauchy problem for Lorentz metrics with prescribed Ricci curvature

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HARMONIC NUMBERS OF ORDER TWO

We investigate sums of Euler type, in particular the summation, in closed form, of the product of Harmonic numbers of order two and the square of reciprocal binomial coefficients. 2000 Mathematics Subject Classification: 05A10; 11B65; 11M06; 33B15; 33D60; 33C20
Innovation Strategy Explored : Innovation Orientation's Strategy Preconditions and Market Performance Outcomes

This study researches a topic that has rarely been analyzed in innovation management so far: innovation strategy and dynamic capabilities. The study is based on data from 140 firms in the IT industry. Its main finding is that an adequate choice of either a deliberate or an emergent strategy can increase market performance through the realization of dynamic capabilities. The two classes of dynamic capabilities that we research here are innovation orientation and flexibility. Our research also shows the important role uncertainty enfolds on the choice of strategies: The effect of strategies and dynamic capabilities is moderated by uncertainty. With low levels of uncertainty, a deliberate strategy whose positive effect enfolds through flexibility improves market performance. In contrast, under high uncertainty, an emergent strategy enhances market performance through an intra-firm innovation orientation.