Miracle-dz/UniFAR-FTUs huggingface dataset:
Probabilistic Analysis of Combinatorial Optimization Problems on Hypergraph Matchings

Abstract : This research project was concerned with probabilistic analysis of a class of discrete optimization problems whose underlying combinatorial structure is based on hypergraph matchings. The primary goal of was to provide theoretical insights into characteristic behavior and properties of this class of problems, which would furnish guidelines for development and tuning of solution algorithms, both exact and heuristic, as well as determine amenability of this class of problems to particular types of solution methods. We have established convergence limits for the optimal values of randomized hypergraph matching problems, along with the corresponding convergence rates, and proposed algorithms for finding solutions with guaranteed quality. For hypergraph matching problems with linear objectives, this task reduces to finding k-cliques in specially constructed k-partite graphs, for which a new branch-and-bound algorithm was developed that employs bit parallelism to achieve significant computational improvements over existing methods. In a related development, the behavior of quasi-cliques in random graphs was investigated, and it was ascertained that the size of the maximum quasi-clique undergoes a first-order phase transition, one of the first results of this kind.
The effects of functional training and stationary cycling on respiratory function of elderly with Parkinson disease: a pilot study

Abstract Introduction: Respiratory function changes in patients with Parkinson’s disease (PD) contribute to aspiration pneumonia, the main cause of mortality in PD population. Objective: To compare the effects of functional training and cycle exercise in respiratory function of elderly with PD. Methods: Twenty participants were randomised into two groups. Experimental group (EG) (n = 10) performed cycle exercise and control group (CG) (n = 10) was trained with functional training. A blinded researcher evaluated maximal inspiratory pressure (MIP), maximal expiratory pressure (MEP), thoracoabdominal amplitude, forced vital capacity (FVC) and forced expiratory volume in the first second (FEV1) before and after interventions. Results: Both groups did not improve significantly respiratory function. Only CG improved significantly FVC (p = 0.01). No differences were found between groups. Conclusion: 8-week exercise programs are not able to improve the respiratory function of elderly in 2 to 3 PD Hoehn & Yahr stage. Both functional training and cycle exercise do not to improve respiratory function in elderly with PD.
The Optical Study of ZnO Thin Films at Different Times of Annealing and Varying Temperatures Prepared by Chemical Bath Deposition.

A research on the Deposition and Characterization of ZnO Thin Films by Chemical Bath Deposition Technique using Ammonia (NH3) as a complexing agent. Thin films of ZnO are deposited onto glass substrates at room temperature for 5hours. The optical properties of the films were measured using Double Beam UV- Spectrophotometer with serial number UV061514, Rutherford Back Scattering Spectroscopy (RBS) analysis revealed that the thin filmshave percentage ratios of the elements of Zn/O, 47/53 as annealed for 3hours at the temperature of 250⁰C and Zn/O, 48.8/51.2as annealed for 1hour at the temperature of 150⁰C. The thicknesses are 80nm for 3hours and 150nm for 1hour asannealed samples at 250⁰C and 150⁰C respectively. It was found that ZnO thin films exhibits n-type conduction. Optical band gap values of the twosamples are 3.1±0.05eV as annealed for 3hours and 3.3±0.05eV as annealed for 1hour with an average of 3.2±0.05eV. Other optical properties calculated from transmittance using appropriate equations are absorbance, reflectance, band gap , absorption coefficient, optical conductivity, refractive index and extinction coefficient.
Multi Organization Records Sharing in Cloud Computing Using Attribute Based Encryption

Cloud computing has emerged as one of the most influential paradigms in the IT industry in recent years. Since this new computing technology requires users to entrust their valuable data to cloud providers, there have been increasing security and privacy concerns on outsourced data. Several schemes are used to control access from untrusted users or servers to protect single users or combinations of multi users called organization resources. But, in internal organization for all user levels have same and single access control method maintained by cloud providers and didn’t have data confidentiality between user levels (fine grained access problem). This method used to access only the single dataset or local dataset from the cloud computer. In proposed, to achieve fine-grained and scalable data access control, using attribute-based encryption (ABE) techniques to encrypt each file and greatly reduces the key management complexity for owners and users. Also, focus on the multiple data owner scenario for data sharing between multi organizations using the advanced encryption standard (AES) algorithm and enables the global dataset sharing. Using global Resource Description Framework (RDF) analyze its performance, security and computational complexity.
A study of the relationship between exit, voice, loyalty and neglect and commitment in India

Drawing on exit, voice, loyalty and neglect (EVLN) literature, this study examines direct and interactive associations between organizational-level commitment and team-level commitment and the use of EVLN by managers in India. The study is based on a survey of 200 managers and supervisors from seven Indian firms. The findings on the use of voice are consistent with the past research in Western countries, but challenge the prevailing assumption about the use of voice in high power distance societies. The results also indicate that team-level commitment moderates the association between organizational-level commitment and the use of EVLN.
Accounting for Human Capital and Weak Identification in Evaluating the Esptein-Zin-Weil Non-Expected Utility Model of Asset Pricing

In this paper, I first develop a new approach to estimating the return on the aggregate wealth portfolio that accounts for human capital and financial assets other than stocks. Using the estimated return on the wealth portfolio and the quarterly U.S. aggregate data on consumption and asset returns from 1959 to 2001, I then test the asset pricing and consumption implications of the Epstein and Zin (1991) and Weil (1990) model by employing the weak-identification robust tests of Stock and Wright's (2000) in the context of continuous updating generalized method of moments. In contrast with previous studies that ignored human capital and weak identification in evaluating this model, I find that its asset pricing implications cannot be rejected at conventional significance levels for reasonable parameter values. For example, the 95% confidence sets for unknown parameters include values of the relative risk aversion around 2 or lower, values of the elasticity of intertemporal substitution for consumption closely around 1, and the time discount factor around 0.987. Some of these parameter value combinations are able to simultaneously match the average equity premium and the average riskfree rate in the data. Furthermore, they imply that the dominant determinant of the equity premium is, surprisingly, the volatility of stock returns, the risk factor in the traditional capital asset pricing model.
Show Me Yours and I'll Show You Mine: Sharing Borrower Information in a Competitive Credit Market

We exploit detailed data on approved and rejected small business loans to assess the impact of the introduction of a credit registry in Bosnia and Herzegovina. Our findings are threefold. First, mandatory information sharing tightens lending at the extensive margin as more applications are rejected, in particular in areas with strong credit market competition. These rejections are increasingly based on hard information—especially positive borrower information from the new registry—and less on soft information. Second, lending standards also tighten at the intensive margin: the registry leads to smaller, shorter and more expensive loans. Third, the tightening of lending along both margins improves loan quality. Default rates go down in particular in high competition areas and for first-time borrowers. This suggests that a reduction in adverse selection is an important channel through which information sharing affects loan quality.
A chemical reaction network solver for the astrophysics code NIRVANA

Context. Chemistry often plays an important role in astrophysical gases. It regulates thermal properties by changing species abundances and via ionization processes. This way, time-dependent cooling mechanisms and other chemistry–related energy sources can have a profound influence on the dynamical evolution of an astrophysical system. Modeling those effects with the underlying chemical kinetics in realistic magneto-gasdynamical simulations provide the basis for a better link to observations. Aims. The present work describes the implementation of a chemical reaction network solver into the magneto-gasdynamical code NIRVANA. For this purpose a multispecies structure is installed, and a new module for evolving the rate equations of chemical kinetics is developed and coupled to the dynamical part of the code. A small chemical network for a hydrogen–helium plasma was constructed including associated thermal processes which is used in test problems. Methods. Evolving a chemical network within time-dependent simulations requires the additional solution of a set of coupled advection-reaction equations for species and gas temperature. Second-order Strang-splitting is used to separate the advection part from the reaction part. The ordinary differential equation (ODE) system representing the reaction part is solved with a fourth-order generalized Runge-Kutta method applicable for stiff systems inherent to astrochemistry. Results. A series of tests was performed in order to check the correctness of numerical and technical implementation. Tests include well-known stiff ODE problems from the mathematical literature in order to confirm accuracy properties of the solver used as well as problems combining gasdynamics and chemistry. Overall, very satisfactory results are achieved. Conclusions. The NIRVANA code is now ready to handle astrochemical processes in time-dependent simulations. An easy-to-use interface allows implementation of complex networks including thermal processes. In combination with NIRVANA’s self-gravity solver, its efficient solver for dissipation terms and its adaptive mesh refinement capability challenging astrophysical problems come into reach with the code.
Cooperation Strategies for the Broadcast and Multiple Access Channels

—It has long been observed that cooperation between users in a communication network can improve its performance and simplify the coding schemes. In this talk I will describe recent results on cooperation for the broadcast and multiple access channels, and discuss few of the difﬁculties that arise when the number of users is large. New results and insights will be presented for speciﬁc scenarios.
Fate of paralytic shellfish poisoning toxins ingested by the copepod Acartia clausi

The fate of paralytic shellfish poisoning (PSP) toxins ingested by the copepod Acartia clausi was studied in unialgal and mixed cultures of the toxic dinoflagellate Alexandrium minutum and the non-toxic dinoflagellate Prorocentrum micans. Acartia clausi fed actively on Alexandrium minutum, but feeding pressure diminished over time. This reduced feeding upon toxic phytoplank- ton seems to be due to behavioural rejection, since feeding pressure on the non-toxic dinoflagellate did not diminish over time. The assimilation efficiency of toxins ingested by copepods was 3.8%. Some of these toxins assimilated by copepods were redirected to the eggs, but the daily total toxin output in the eggs was only 0.98% of the daily toxins assimilated by the copepods. This small amount of toxins in the eggs had no effect on the fate of the toxins in the copepods, but did affect copepod reproductive success, since reduced egg hatching was observed with increasing toxin accumulation in the copepod tissues. The amount of toxins daily excreted in the pellets was only 2.26% of the daily amount of toxins assimilated by the copepods. However, the detoxification rate of PSP toxins by the copepods was 0.586 d -1 . Therefore, toxins were either transformed and excreted as other compounds in faecal pellets and/or were eliminated through excretion in dissolved form. A model showed that the copepods accumulated PSP toxins through dietary incorporation, but excreted them after several days. Copepods accumulate toxins up to a threshold without any negative effect on fecundity, but above this threshold, they require a higher amount of food to achieve the same egg production rate.
In vitro Shoot Regeneration of Bacopa monnieri (L.) Using Cyanobacterial Media- A Novel Approach and Effect of Phytoregulators on in vitro micropropagation

This review highlights the recent development and n ovel achievements made for the multiple shoots rege neration of Bacopa monnieri in Cyanobacterial medium as well as in MS medium. Shootlets were regenerated from noda l explants of stem through auxiliary shoot proliferat ion. In Cyanobacterial culture medium Bacopa monnie ri survived for long period of time and multiple shoot initiati on was observed in 2mg/l Kn. When Bacopa monnieri w as inoculated in MS medium supplemented with different concentrations of PGR’s, maximum no. of shoots wer e observed in 0.5 mg/l BAP + 2.0 mg/l Kn and 0.5 mg/ l Kn+1.0 mg/l BAP.
Investigation on performance of three personal cooling systems in mitigating heat strain by means of thermal manikin

The objective of current study was to examine the effectiveness of three cooling strategies (i. e., electric air fan, evaporative cooling vest, and liquid cooling vest) in mitigating body heat strain in heat wave conditions by means of a Newton-type thermal manikin. A human thermoregulatory model was used to simulate human physiological responses while using the three cooling strategies. Two environmental conditions were selected to simulate heatwave conditions, i. e. , 36 °C, 33% relative humidity (hot-dry), 40 °C, 27% relative humidity (extremely hotdry). A metabolic rate of 1.2 MET was selected to simulate resting person or person doing light housework. It was found that the electric air fan had cooling benefit in both environments. In addition, the evaporative cooling vest and liquid cooling vest showed similar effectiveness in mitigating body heat strain in both hot-dry or extremely hot-dry environments. Thus the evaporative cooling vest and liquid cooling vest were recommended under heatwave conditions.
Multivariate Gram-Charlier Densities

This paper introduces a new family of multivariate distributions based on Gram-Charlier and Edgeworth expansions. This family encompasses many of the univariate seminonparametric densities proposed in the financial econometrics as marginal distributions of the different formulations. Within this family, we focus on the specifications that guarantee positivity so obtaining a well-defined multivariate density. We compare different "positive" multivariate distributions of the family with the multivariate Edgeworth-Sargan, Normal and Student’s t in an in- and out-sample framework for financial returns data. Our results show that the proposed specifications provide a quite reasonably good performance being so of interest for applications involving the modelling and forecasting of heavy-tailed distributions.
Wilkhu, Jitinder S. and McNeil, Sarah E. and Anderson, David E. and Perrie, Yvonne (2013) Characterization and optimization of bilosomes

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Innovation, Learning, and Synergy Between Entrepreneurs and Venture Capitalists

Uncertainty and complexity are fundamental to innovation and decision making, especially in global high technology industries. Entrepreneurs interact with venture capitalists through the entrepreneurs’ communication and learning about the potential of new business venture. We believe that uncertainty and complexity are fundamental to the process of innovation through the synergy between entrepreneurs and venture capitalists. The purpose of this conceptual paper is to provide a conceptual synthesis on a complexity system approach to the innovation relationship between entrepreneurs and venture capitalists.
Segmentation of tree regions using data of a full-waveform laser

The new sensor technique for receiving full-waveform laser data delivers not only height information but also additional features like intensity. The echoes generated by reflecting objects are approximated by amplitude and width of a Gaussian kernel. These features are used for tree region segmentation. The inclusion of the available information in the environment around each 3d point of the cloud can be used to stabilize the segmentation process. Two kinds of environments spherical and cylindrical are discussed. The calculation of the covariance inside these environments is discussed without and with weighting all points by their measured intensity. An application of the described method is demonstrated for a typical scene. A method for the correction of the number of points inside an environment produced by the movements of the sensor platform is presented. Two proposals are described for the segmentation of trees. One of them uses the eigenvalues of the covariance matrix in an environment. The other method considers only the features of the echoes for each laser pulse without considering an environment.
Doing a 180: Examining the Stability and Reversal of Behavioral Confirmation Effects

For decades, social psychologists have examined the concept of behavioral expectancies, also known as self-fulfilling prophecies, and the long-lasting impact that they can have on individuals’ lives. The reversal of such expectancy effects has received much less attention. The present study focused on the questions of how stable behavioral tendencies elicited via self-fulfilling prophecies are, and the ease, or difficulty, with which expectancycongruent behavioral tendencies can be reversed. To examine these questions, participants completed varying numbers of computerized reaction time tasks against computer opponents. Participants first played 1, 3, or 5 games against opponents who treated them with hostility, followed by a single game against an opponent who treated them with kindness, and finally played against an opponent who displayed neutral behavior toward them. We predicted that the more times participants played against a hostile opponent, the more difficult it would be for the participants to reduce expectancy-congruent hostile behavior through interaction with an opponent who treated them with kindness. Contrary to our prediction, participants who played the most games against hostile opponents before being exposed to a kind opponent were significantly kinder to the final neutral opponent than were other participants who received less hostile treatment (p = .002). These results suggest that it may be possible to counteract the negative effects of behavioral expectancies in some cases. Discussion centers on examining connections between this work and scholarship on empathy and altruism, as well as a consideration of future directions suggested by the results. Open Materials badge earned for transparent research practices. Materials are available at https://osf.io/gqk6s/ https://doi.org/10.24839/2325-7342.JN23. 3.227
Content and distribution of conjugated linoleic acid isomers in bovine milk, cheese and butter from Azores

Pasture intake is a major factor affecting the content and the distribution of the conjugated linoleic acid (CLA) isomers in bovine milk fat. The aim of this study was to determine the CLA contents and its isomeric distribution in milk, cheese and butter from Azores, a Portuguese archipelago in the Atlantic Ocean. The CLA isomers were analysed using Ag+-HPLC with three silver ion columns in series. Butter was the richest product in CLA, with a total of 6.58–7.72 mg·g−1, whereas cheese presented the highest specific CLA content (12.40–14.00 mg·g−1 fat). The CLA isomeric distribution showed a clear predominance of the bioactive cis-9, trans-11 isomer (from 72.26% to 82.59%). The trans-11, cis-13 CLA isomer, a useful indicator of pasture-fed cow’s milk, varied from 2.22% to 3.91%. In conclusion, the Azorean dairy products have a relatively high amount of CLA, especially the cis-9, trans-11 isomer, constituting therefore a good source of these compounds for the human diet.Abstract(CLA) 3 Ag+- CLA CLA (6.58–7.72 mg·g−1), CLA (12.40–14.00 mg·g−1) cis-9, trans-11 (72.26% ∼ 82.59%) CLA trans-11, cis-13 CLA 2.22% ∼ 3.91% CLA, cis-9, trans-11RésuméL’ingestion de pâture est le principal facteur qui affecte la concentration et la distribution des isomères de l’acide linoléique conjugué (CLA) de la matière grasse du lait bovin. L’objectif de cette étude était de déterminer la teneur en CLA et la distribution de ses isomères dans le lait, le fromage et le beurre des Açores, un archipel Portugais de l’Océan Atlantique. Les isomères de CLA ont été analysés par Ag+-HPLC, utilisant trois colonnes ioniques argentées, en série. Le beurre était le produit le plus riche en CLA, avec un total de 6,58–7,72 mg·g−1, tandis que le fromage présentait la plus grande teneur spécifique en CLA (12,40–14,00 mg·g−1 matière grasse). La distribution des isomères de CLA a montré une nette prédominance de l’isomère bioactif cis-9, trans-11 (de 72,26 à 82,59 %). La teneur en isomère trans-11, cis-13, indicateur de l’ingestion de pâture par les vaches, variait de 2,22 à 3,91 %. En conclusion, les produits laitiers des Açores ont une teneur relativement élevée en CLA, et particulièrement en isomère cis-9, trans-11, constituant ainsi une bonne source de ces composés pour l’alimentation humaine.