Miracle-dz/UniFAR-FTUs huggingface dataset:
O Déficit Em Conta Corrente Do Brasil Nos Anos Noventa: Alocação Intertemporal Do Consumo Ou Restrição Externa Ao Crescimento?

This paper addresses the increasing current account imbalances of the Brazilian economy in the second half of the nineties based on two approaches. According to the intertemporal approach, the current account imbalance expresses the decisions of consumption-smoothing. So, a current account deficit doesn't not necessarily mean fragility or a risk of eminent crisis; on the contrary, it might be a result of optimistic expectations about the future economic growth. Studies applied to Brazil reject crucial aspects of the intertemporal approach for the current account. According to the post keynesian and structuralist models, the current account imbalance is one of the most important restrictions to the domestic growth. The evidence provided by post keynesian studies combined with the results of the econometric test presented in this paper corroborate to the hypothesis of external restriction to domestic growth, that is linked here with three structural aspects: the impact of the economic liberalization on the trade-growth relation; the technological gap expressed by the structure of exports; and the impact of the foreign direct investment on the current account. The conclusion is that the post keynesian and structuralist approaches provide the most adequate theoretical tool to assess the Brazilian current account imbalances of the nineties.
Actual Emotion and False Emotion Classification by Physiological Signal

The experiment had the purpose of analyzing actual emotions and false expressions through physiological signals. During the test, the subject imagined and expressed positive or negative emotion in accordance with the instructions of the experimenter. The physiological signals such as EEG (Electroencephalogram), ECG (Electrocardiogram), GSR (Galvanic Skin Response), and SKT (Skin temperature) were measured and analyzed. Clear distinctions were shown between actual emotions and false emotions with 5 variables in the EEG and LF/HF ratio in the HRV (Heart Rate Variability). Based on these results, we can classify actual expressions and false expressions of emotion. This study can expect for future crime investigations, psychology and medicine, marketing, and other various industries.
Robust hyperspectral image classification with rejection fields

In this paper we present a novel method for robust hyperspectral image classification using context and rejection. Hyper-spectral image classification is generally an ill-posed image problem where pixels may belong to unknown classes, and obtaining representative and complete training sets is costly. Furthermore, the need for high classification accuracies is frequently greater than the need to classify the entire image. We approach this problem with a robust classification method that combines classification with context with classification with rejection. A rejection field that will guide the rejection is derived from the classification with contextual information obtained by using the SegSALSA [1] algorithm. We validate our method in real hyperspectral data and show that the performance gains obtained from the rejection fields are equivalent to an increase the dimension of the training sets.
Simple genetic algorithm parameter selection for protein structure prediction

Selection of run-time parameters is a critical step in the application of genetic algorithms (GAs). Numerous investigations have discussed parameter set selection, both theoretically and empirically. Theoretical work has focused on the choice of population size, while empirical studies cover a wide range of GA parameters. Theory suggests population sizes which increase exponentially with string length. The available experimental data suggests small populations perform consistently well, but the test problems are limited to small string lengths. Thus, we still do not have a complete understanding of how parameters should be chosen, especially for problems with large string lengths. This study extends Schaffer's (1989) results by performing a similar empirical analysis of GA parameters on a real-world application (protein structure prediction), with longer string lengths and a very large number of local optima. Relationships between population size, mutation rates and crossover rates similar to those reported by Schaffer are shown.
Antibacterial and Antioxidant Potency of Floral Honeys from Different Botanical and Geographical Origins

In order to assess their physicochemical and antioxidant properties as well as their antimicrobial potency, four varieties of honey from different botanical and geographical origins were used. The agar incorporation method was used to determine the antimicrobial potency of honeys. The total phenol content was determined by a modified Folin–Ciocalteu method and the free radical scavenging activity by the Fe3+ reducing power (FRAP) assay. Manuka honey was the most effective against Staphylococcus aureus Oxa R and S. aureus Oxa S with a Minimum Inhibitory Concentration (MIC) of 6% and 7%, respectively, whereas wild carrot honey was the most effective against Pseudomonas aeruginosa, with a MIC of 12%. Lavender honey was the least effective against all tested strains, even though was found to have the lowest pH and water content. Manuka honey had the highest content of polyphenols, with 899.09 ± 11.75 mg gallic acid/kg, whereas lavender honey had the lowest, with 111.42 ± 3.54 mg gallic acid/kg. A very significant correlation (r value was 0.9079 at P < 0.05) was observed between the total polyphenolic content and the Fe2+ content formed in the presence of the honey antioxidants. The differences between honey samples in terms of antibacterial and antioxidant activity could be attributed to the natural variations in floral sources of nectar and the different locations.
Association between a medical school admission process using the multiple mini-interview and national licensing examination scores.

CONTEXT There has been difficulty designing medical school admissions processes that provide valid measurement of candidates' nonacademic qualities. OBJECTIVE To determine whether students deemed acceptable through a revised admissions protocol using a 12-station multiple mini-interview (MMI) outperform others on the 2 parts of the Canadian national licensing examinations (Medical Council of Canada Qualifying Examination [MCCQE]). The MMI process requires candidates to rotate through brief sequential interviews with structured tasks and independent assessment within each interview. DESIGN, SETTING, AND PARTICIPANTS Cohort study comparing potential medical students who were interviewed at McMaster University using an MMI in 2004 or 2005 and accepted (whether or not they matriculated at McMaster) with those who were interviewed and rejected but gained entry elsewhere. The computer-based MCCQE part I (aimed at assessing medical knowledge and clinical decision making) can be taken on graduation from medical school; MCCQE part II (involving simulated patient interactions testing various aspects of practice) is based on the objective structured clinical examination and typically completed 16 months into postgraduate training. Interviews were granted to 1071 candidates, and those who gained entry could feasibly complete both parts of their licensure examination between May 2007 and March 2011. Scores could be matched on the examinations for 751 (part I) and 623 (part II) interviewees. INTERVENTION Admissions decisions were made by combining z score transformations of scores assigned to autobiographical essays, grade point average, and MMI performance. Academic and nonacademic measures contributed equally to the final ranking. MAIN OUTCOME MEASURES Scores on MCCQE part I (standardized cut-score, 390 [SD, 100]) and part II (standardized mean, 500 [SD, 100]). RESULTS Candidates accepted by the admissions process had higher scores than those who were rejected for part I (mean total score, 531 [95% CI, 524-537] vs 515 [95% CI, 507-522]; P = .003) and for part II (mean total score, 563 [95% CI, 556-570] vs 544 [95% CI, 534-554]; P = .007). Among the accepted group, those who matriculated at McMaster did not outperform those who matriculated elsewhere for part I (mean total score, 524 [95% CI, 515-533] vs 546 [95% CI, 535-557]; P = .004) and for part II (mean total score, 557 [95% CI, 548-566] vs 582 [95% CI, 569-594]; P = .003). CONCLUSION Compared with students who were rejected by an admission process that used MMI assessment, students who were accepted scored higher on Canadian national licensing examinations.
Development of thermoplastic biocomposites based on aligned hybrid yarns for fast composite manufacturing

This paper examines the thermal and mechanical behaviour as well as moisture absorption of aligned hemp composites using hemp/PLA wrap spun yarns. Uniaxial composites were fabricated with 30 mass% hemp using compression moulding. The properties of composites in terms of hemp fibre orientation (aligned and random), off-axis angle and alkali treatment were investigated. It was found that the testing direction influenced the mechanical properties of the composites. Compared with all the fabricated composites, the aligned alkali hemp/PLA yarn composite possessed the best mechanical properties, including tensile, flexural and impact strengths, lower porosity and water absorption. The water absorption for all composites was higher than for neat PLA, both at room temperature and 80 C. The PLA in its treated composites had higher crystallinity, which was attributed to effective heterogeneous nucleation induced by hemp. Based on SEM observation and theoretical analysis of DMTA data, there was a favourable interfacial adhesion in all composites.
Rhetorics in Financial Reporting: An Interpretive Case Study

This study is a case study conducted in an Indonesian insurance company. The aim of the study is to understand the dynamics of financial reporting in the company. Ontologically, this study is built on a belief that financial reporting practice is a socially constructed reality. As a socially constructed reality, such a practice involves an interaction among social actors, and between organisational actors and the institutional and cultural environment in which the company operates. The main research question of this study is why and how the company constructs its financial reporting to deliver messages to its audience. This study reveals that the company is committed to quality financial reporting because such reporting can be used to gain legitimacy and to maintain social harmony. Consequently, financial reporting is constructed as a rhetorical story about its performance, management ability and insight into the future.
Scientific articles recommendation

We study the problem of recommending scientific articles to users in an online community and present a novel matrix factorization model, the topic regression Matrix Factorization (tr-MF), to solve the problem. The main idea of tr-MF lies in extending the matrix factorization with a probabilistic topic modeling. Instead of regularizing item factors through the probabilistic topic modeling as in the framework of the CTR model, tr-MF introduces a regression model to regularize user factors through the probabilistic topic modeling under the basic hypothesis that users share the similar preferences if they rate similar sets of items. Consequently, tr-MF provides interpretable latent factors for users and items, and makes accurate predictions for community users. Specifically, it is effective in making predictions for users with only few ratings or even no ratings, and supports tasks that are specific to a certain field, neither of which is addressed in the existing literature. Further, we demonstrate the efficacy of tr-MF on a large subset of the data from CiteULike, a bibliography sharing service dataset. The proposed model outperforms the state-of-the-art matrix factorization models with a significant margin.
Experimental study on ON-OFF control systems for flexible quadruped locomotion robot

This paper proposed a small and light weight flexible quadruped locomotion robot based on an easy ON-OFF control for forward motion and circular gait. We named a flexible, flat, plate to I-FFP actuator as an actuator of a flexible quadruped locomotion robot. The I-FFP actuator is a versatile actuators that mechanically obtains flexible displacement by combining functional materials like the shape-memory alloy with a simple lamina structure lightly not broken. The center of gravity movement for robot is achieved by the expansion and contraction of a this flexible lamina. Then, the assembling of this robot was completed in around several minutes. In this paper, we proposed a palm-sized quadruped locomotion robot of back-and-forth movement in addition to circular gait using easy switching ON-OFF control.
Differential-Algebraic Multiview Constraints

In this paper we present a novel type of multiview constraints, called differential-algebraic multiview constraints. These constraints are based on both corresponding feature points and the motion of these feature points, thus combining the discrete multiview constraints with the continuous multiview constraints. The main usage of these constraints is as a theoretical basis for filtering approaches to structure and motion recovery, enabling an update of a current motion estimate when a new image becomes available. One important feature is that the update formula becomes linear in the motion parameters in the calibrated case, which is a major improvement compared to the standard discrete approach. Another advantage is that fewer points are needed in the update formula then when calculating the motion without using a prior estimate
A hybrid recommender system based non-common items in social media

A decade ago, an increasing number of people are accustomed to utilize the social media for sharing their impressions, experiences, information, and resources. A social media website does not only provide the information sharing functions for the users but also has the capability to match users' similar interesting preferences. Therefore, a recommender that can recommend highly interesting information to the users will make the users easy to gain new information they want, suggest implicit friends who have same hobbies, and increase the interactions with others. In this paper, we proposed a weight based recommendation method for social media, which usually has only the personal items uploaded by the users. Our evaluation results show this recommendation approach is feasible and flexible. Furthermore, we applied the proposed recommendation method into our information sharing system and look forward it can raise the interactions with the users in order to improve the quality of community.
Dissociation of the Spectrin-Ankyrin Complex as a Basis for the Loss of Na,K- ATPase Polarity Following Ischemic Injury in MDCK Cells

The polarized distribution of Na,K-ATPase at the basolateral membranes of renal tubule epithelial cells is maintained via a tethering interaction with the underlying spectrinankyrin cytoskeleton. In this study, we have explored the mechanism underlying the loss of Na,K-ATPase polarity following ischemic injury in MDCK cells, utilizing a novel antibody raised against a recently-described kidney-specific isoform of ankyrin. In control MDCK cells, ankyrin was co-localized with Na,K-ATPase at the basolateral membrane. ATP depletion resulted in a duration-dependent mislocation of Na,K-ATPase and ankyrin throughout the cytoplasm. Co-localization studies showed partial overlap between the distribution of ankyrin and Na,K-ATPase at all periods following ATP depletion. By immunoprecipitation with anti-ankyrin antibody, the mislocated Na,KATPase remained bound to ankyrin at all time points following ATP depletion. However, the interaction between ankyrin and spectrin was markedly diminished within 3 h of ATP depletion, and was completely lost after 6 h. In solution binding assays using a fusion peptide of GST with the ankyrin binding domain of Na,K-ATPase, a complex with ankyrin was detected at all time points following ATP depletion, but spectrin was lost from the complex in a duration-dependent manner. The loss of spectrin binding was not attributable to spectrin degradation, but was associated with hyperphosphorylation of ankyrin. The results suggest that a dissociation of the membrane-cytoskeleton complex at the spectrin-ankyrin interface may contribute to the loss of Na,K-ATPase polarity following ischemic injury, and reaffirm a critical adapter role for ankyrin in the normal maintenance of Na,K-ATPase polarity.
On Infectious Models for Dependent Default Risk

Modeling dependent defaults is a key issue in risk measurement and management. In this paper, we introduce a Markovian infectious model to describe the dependent relationship of default processes of credit entities. The key idea of the proposed model is based on the concept of common shocks adopted in the insurance industry. We compare the proposed model to both one-sector and two-sector models considered in the credit literature using real default data. A log-likelihood ratio test is applied to compare the goodness-of-fit of the proposed model. Our empirical results reveal that the proposed model outperforms both the one-sector and two-sector models.
Term weighting based on document revision history

In real-world information retrieval systems, the underlying document collection is rarely stable or definitive. This work is focused on the study of signals extracted from the content of documents at different points in time for the purpose of weighting individual terms in a document. The basic idea behind our proposals is that terms that have existed for a longer time in a document should have a greater weight. We propose 4 term weighting functions that use each document's history to estimate a current term score. To evaluate this thesis, we conduct 3 independent experiments using a collection of documents sampled from Wikipedia. In the first experiment, we use data from Wikipedia to judge each set of terms. In a second experiment, we use an external collection of tags from a popular social bookmarking service as a gold standard. In the third experiment, we crowdsource user judgments to collect feedback on term preference. Across all experiments results consistently support our thesis. We show that temporally aware measures, specifically the proposed revision term frequency and revision term frequency span, outperform a term-weighting measure based on raw term frequency alone. © 2011 Wiley Periodicals, Inc.
Trust bootstrapping services and service providers

Trust is an important factor for successful online communication. Trust has been used as a criterion for service selection. Most trust and reputation studies assume a system where trust and reputations already exist. However, it is important to initialize trust rates for new services, which have no rating history, the so-called trust bootstrapping process. Trust bootstrapping assists the requestors in their service selection decision. Trust bootstrapping is the initial step in trust building process. Trust bootstrapping is important for reliable interaction with services and service providers that are new to the system. This paper proposes an approach for trust bootstrapping services and service providers. The proposed solution follows the trust principles and addresses a number of trust challenges in the literature. Experiment study is conducted and the results are analysed.
Gauge theory of things alive and universal dynamics

Positing complex adaptive systems made of agents with relations between them that can be composed, it follows that they can be described by gauge theories similar to elementary particle theory and general relativity. By definition, a universal dynamics is able to determine the time development of any such system without need for further specification. The possibilities are limited, but one of them - reproduction fork dynamics - describes DNA replication and is the basis of biological life on earth. It is a universal copy machine and a renormalization group fixed point. A universal equation of motion in continuous time is also presented.
Causes Long-Term Decrease in Blood Pressure in the Spontaneously Hypertensive Rats Overexpression of Angiotensin-Converting Enzyme 2 in the Rostral Ventrolateral Medulla

The rostral ventrolateral medulla (RVLM) is a relay point that provides supraspinal excitatory input to sympathetic preganglionic neurons in the regulation of blood pressure. The importance of the RVLM is further highlighted by observations that an increase of RVLM sensitivity to angiotensin II and enhanced sympathetic activity are associated with hypertension. Angiotensin-converting enzyme 2 (ACE2) has been shown to be central in maintaining the balance between vasoconstrictor activity of angiotensin II with vasoprotective action of angiotensin-(1-7) in the peripheral system. However, its role in central control of blood pressure in the RVLM is yet to be investigated. Thus, our objective in this study was to compare ACE2 expression in the RVLM of Wistar–Kyoto rats and spontaneously hypertensive rats and to determine whether RVLM ACE2 is involved in blood pressure control. ACE2 immunoreactivity was diffusely distributed in many cardiovascular regulatory neurons, including the RVLM. Western blot analysis revealed a 40% decrease in ACE2 in the RVLM of spontaneously hypertensive rat compared with Wistar–Kyoto rats. Lentiviral-mediated overexpression of ACE2 (lenti-ACE2) was used to determine whether a decrease in ACE2 in the RVLM is associated with hypertensive state. Bilateral injection of lenti-ACE2 resulted in a long-term expression of transgenic ACE2. This was associated with a decrease in mean arterial pressure exclusively in the spontaneously hypertensive rat (141 4 mm Hg in lenti-GFP versus 124 5 mm Hg in lenti-ACE2) and heart rate (304 7 bpm in lenti-GFP versus 285 5 bpm in lenti-ACE2). These observations demonstrate that overexpression of ACE2 overcomes its intrinsic decrease in the RVLM and decreases high blood pressure in the spontaneously hypertensive rat. (Hypertension. 2007;49:926-931.)
Apartment Rents and Locations in Portland, Oregon: 1992-2002

This research examines changes in the apartment-rent gradient of Portland, Oregon from 1992 to 2002. The findings indicate that increased population growth has caused real increases in apartment rents across the metropolitan area. The largest increases have occurred closer to the city center and at the beltway. The fixed supply of land coupled with increasing population has resulted in a wealth transfer from renters to landlords. Major freeway intersections, which ten years before were just evolving into new urban sub-centers, now have a statistically significant impact on land values within a six-mile radius of the intersection.