Miracle-dz/UniFAR-FTUs huggingface dataset:
REDE BAYESIANA PARA PREVISÃO DE EVASÃO ESCOLAR

Tendo em vista o grande problema que e a evasao escolar, problema este que impacta instituicoes de ensino do mundo inteiro, este artigo apresenta a aplicacao da tecnica computacional de Redes Bayesianas, com o intuito de predizer os percentuais de chance de evasao dos alunos, com o objetivo de auxiliar os gestores educacionais na prevencao destes tipos de situacoes. A predicao e realizada com base nas caracteristicas dos alunos, coletadas do sistema utilizado pela instituicao de ensino SENAI de Tubarao/SC, permitindo ainda a manipulacao destas caracteristicas por parte do gestor, a fim de simular cenarios com o objetivo de minimizar as chances de o aluno evadir. Atraves da validacao dos resultados foi obtido 85,6% de taxa de acerto, o que indica um bom desempenho da rede bayesiana modelada para o sistema desenvolvido.
Motion Discrimination from EEG Using Logistic Regression and Schmitt-Trigger-Type Threshold

In this study, a robot rehabilitation system is developed for motor paralysis using a brain -- machine interface (BMI) that estimates a patient's intention of motion from his electroencephalogram (EEG). Then, we consider the forcible movement of the patient's affected parts by an exoskeleton robot in synchronicity with his estimated intention. Further, we considered a motion discrimination method using an EEG that was measured when a healthy subject executed an upper-arm bending and stretching exercise. As a result, we used the10 -- 14 Hz band overall intensity of an EEG measured at the right parietal region as a feature of motion discrimination and proposed a method that employed logistic regression to obtain the likelihood function of the discriminated motion. Moreover, we used dual threshold processing, well-known as a "Schmitt-trigger gate" in the field of electronic engineering, to calculate the motion discrimination result using the obtained likelihood value. The effectiveness of our proposed method was confirmed through a motion discrimination experiment.
A fully integrated 2.4GHz low IF CMOS transceiver for 802.15.4 ZigBee applications

A fully integrated 2.4 GHz RF transceiver compliant with the low-power ZigBee (IEEE 802.15.4) standard is presented. The RF transceiver adopts low IF receiver and direct up-conversion transmitter. It consumes 18 mA in receive mode and 17 mA in transmit mode with 1.8-V power supply. The receiver chain IIP3 is -13.S dBm and BBA poly phase filter can reject the ACI/AACI interferers. The achieved transmitter's maximum power is 4.7 dBm and its EVM is 8.4% at 0.5 dBm output. The LO generation is achieved using frequency mixing method and thus it can prevent the VCO pulling. The die area is 2.5 mm times 2.6 mm.
Laboratory Studies to Elucidate the Residual Toxicity of Eight Insecticides to Anystis baccarum (Acari: Anystidae)

Abstract Anystis baccarum (L.) [=Anystis agilis (Banks)] (Acari: Anystidae) is a common predatory mite recently identified in apple (Malus spp.) orchards and in vineyards (Vitus spp.) in Québec, Canada. Studies of its susceptibility to pesticides used in these crops need to be carried out to encourage integrated pest management programs. A laboratory evaluation of methoxyfenozide, acetamiprid, thiamethoxam, imidacloprid, spinosad, phosmet, carbaryl, and λ-cyhalothrin showed that residues of λ-cyhalothrin, phosmet, and carbaryl were highly toxic in 48-h petri dish bioassays. The field rate of λ-cyhalothrin is 0.0184 g (AI)/liter, which is 26-fold the estimated LC50 of 0.0007 g (AI)/liter) for this predator. The field rate for phosmet is 0.6000 g (AI)/liter, which is 118-fold the LC50 for phosmet, which is 0.0051 g (AI)/liter), and the field rate for carbaryl is 1.960 g (AI)/liter, which is 784-fold the estimated LC50 of 0.0025 g (AI)/liter). Five other insecticides, methoxyfenozide, acetamiprid, thiamethoxam, imidacloprid, and spinosad, were evaluated and found to be nontoxic.
Phase I trial of chemoradiotherapy with the combination of S‐1 plus cisplatin for patients with unresectable locally advanced squamous cell carcinoma of the head and neck

The aim of the present study was to determine the maximum tolerated dose (MTD) of S‐1 in combination with chemoradiotherapy (CRT) in patients with unresectable locally advanced squamous cell carcinoma of the head and neck, and evaluate the difference in pharmacokinetics of S‐1 when administered as a suspension via a feeding tube or orally as a capsule. Chemotherapy consisted of administration of S‐1 twice daily on days 1–14 at escalating doses of 40, 60 and 80 mg/m2 per day, and cisplatin at 20 mg/m2 per day on days 8–11, repeated twice at a 5‐week interval. Single daily radiation of 70 Gy in 35 fractions was given concurrently starting on day 1. Two additional cycles of chemotherapy were planned after the completion of CRT. Before starting CRT, each patient received S‐1 via two different administration methods. Twenty‐two patients were enrolled. The MTD was reached with S‐1 at 80 mg/m2 per day, with two of six patients experiencing febrile neutropenia lasting more than 4 days. All four patients whose creatinine clearance was decreased to <60 mL/min after the first cycle of chemotherapy developed febrile neutropenia lasting more than 4 days. Pharmacokinetic analysis revealed that the 5‐fluorouracil area under the curve did not significantly differ by the administration route. S‐1 at 60 mg/m2 per day for 14 days was well tolerated with concurrent CRT. Administration of S‐1 as a suspension or by whole capsule can be considered therapeutically interchangeable. Although these data are preliminary, activity was highly promising, and this approach warrants further investigation. (Cancer Sci 2011; 102: 419–424)
Differences in tendon properties in elite badminton players with or without patellar tendinopathy

The aim of this study was to examine the structural and mechanical properties of the patellar tendon in elite male badminton players with and without patellar tendinopathy. Seven players with unilateral patellar tendinopathy (PT group) on the lead extremity (used for forward lunge) and nine players with no current or previous patellar tendinopathy (CT group) were included. Magnetic resonance imaging was used to assess distal patellar tendon dimensions. Patellar tendon mechanical properties were assessed using simultaneous tendon force and deformation measurements. Distal tendon cross‐sectional area (CSA) normalized for body weight (mm2/kg2/3) was lower in the PT group compared with the CT group on both the non‐lead extremity (6.1 ± 0.3 vs 7.4 ± 0.2, P < 0.05) and the lead extremity (6.5 ± 0.6 vs 8.4 ± 0.3, P < 0.05). Distal tendon stress was higher in the PT group compared with the CT group for both the non‐lead extremity (31 ± 1 vs 27 ± 1 MPa, P < 0.05) and the lead extremity (32 ± 3 vs 21 ± 3 MPa, P < 0.01). Conclusively, the PT group had smaller distal patellar tendon CSA on both the injured (lead extremity) and the uninjured side (non‐lead extremity) compared with the CT group. Subsequently, the smaller CSA yielded a greater distal patellar tendon stress in the PT group. Therefore, a small tendon CSA may predispose to the development of tendinopathy.
Intersymbol interference analysis of a 60 GHz-band compact range wireless access system

A compact range wireless access system in the 60 GHz-band has been proposed for multi-Gb/s data transfer. A prototype Gigabit Access Transponder Equipment was made to evaluate the system performance of bit-error rate and signal-to-noise ratio. An error-free communication zone up to 11 m is available by adopting the 32×32 and 64×64-element waveguide slot arrays in the transmitter. However, the BER degrades especially for the propagation distance less than 1 m. In this study, the concept of intersymbol interference is introduced in the antenna and propagation field for the first time. An equivalent baseband communication system is newly proposed to evaluate the wireless channel including antennas. The ISI as well as BER for the circular aperture antenna is theoretically analyzed as a function of propagation distance.
Impact of human leucocyte antigen mismatch on graft‐versus‐host disease and graft failure after reduced intensity conditioning allogeneic haematopoietic stem cell transplantation from related donors

The impact of human leucocyte antigen (HLA) incompatibility between donor and recipient on graft‐versus‐host disease (GVHD) and graft failure after reduced‐intensity conditioning stem cell transplantation (RICT) remains to be elucidated. We retrospectively analysed outcome in 341 patients who underwent RICT from related donors for haematological malignancies. The overall cumulative incidence of grade II–IV acute GVHD (aGVHD) was 40% for all subjects; 39% in recipients with HLA‐matched donors, 44% in those with one‐locus‐mismatched donors, and 50% in those with two‐ to three‐loci‐mismatched donors. In a Cox regression model adjusted for potential confounders, the tendency for grade II–IV aGVHD (P = 0·01), chronic GVHD (cGVHD) (P = 0·05) and graft failure (P = 0·033) increased with HLA disparity. Use of peripheral blood grafts instead of marrow was a risk factor for cGVHD. Use of antithymocyte globulin was associated with reduced aGVHD and cGVHD. Overall survival (OS) in recipients of two‐ to three‐loci‐mismatched RICT at 2 years (18%) was significantly worse than that in patients who received one‐locus‐mismatched RICT (51%) and HLA‐matched RICT (48%) (P < 0·0001). A two‐ to three‐loci mismatch was identified as an independent risk factor for OS (P < 0·001), but there was no significant difference in OS between HLA‐matched and one‐locus‐mismatched RICT. HLA incompatibility between the donor and recipient is an important risk factor for graft failure, aGVHD, cGVHD and OS after RICT. RICT from a one‐locus‐mismatched donor may represent an effective alternative approach in patients with high‐risk malignancies who lack HLA‐matched related donors.
Optimal Placement and Sizing of Distributed Generation via an Improved Nondominated Sorting Genetic Algorithm II

An improved nondominated sorting genetic algorithm-II (INSGA-II) has been proposed for optimal planning of multiple distributed generation (DG) units in this paper. First, multiobjective functions that take minimum line loss, minimum voltage deviation, and maximal voltage stability margin into consideration have been formed. Then, using the proposed INSGA-II algorithm to solve the multiobjective planning problem has been described in detail. The improved sorting strategy and the novel truncation strategy based on hierarchical agglomerative clustering are utilized to keep the diversity of population. In order to strengthen the global optimal searching capability, the mutation and recombination strategies in differential evolution are introduced to replace the original one. In addition, a tradeoff method based on fuzzy set theory is used to obtain the best compromise solution from the Pareto-optimal set. Finally, several experiments have been made on the IEEE 33-bus test case and multiple actual test cases with the consideration of multiple DG units. The feasibility and effectiveness of the proposed algorithm for optimal placement and sizing of DG in distribution systems have been proved.
Hardware Implementation of Active Contour Algorithm for Fast Cancer Cells Detection

A critical process in real-time optical microscopy applications, such as cancer cells detection, is the determination of a cells position in the histopathological image. Aiming at low-cost and efficiency, a proof-of-concept study was done to distinguish between normal and abnormal cells based on optical microscopy at the LICM laboratory. A snake/active contour method was developed in which several curves move within images to find normal/abnormal cell boundaries. Abnormal cell identification typically takes more than one hour, however an implementation on FPGA technology solves this problem. A novel embedded architecture of the snake method was developed for an efficient and fast computation of active contour used in high throughput image analysis applications, where time performance is critical. This architecture allows for a scalable and a totally embedded processing on FPGA of a large number of images. The architecture of the snake method was able to detect objects from images which have irregular shapes, such as carcinoma cell types. To demonstrate the effectiveness of the approach, the architecture was implemented on Xilinx ISE 12.3-FPGA technology using VHDL structural description. It shows the possibility of using the snake method implementation on FPGA technology to detect abnormal cells in real time.
Isolation and genetic analysis of mutations allowing the degradation of furans and thiophenes by Escherichia coli

Successive mutations of Escherichia coli yielded a strain that was able to degrade a variety of heterocyclic oxygen- and sulfur-containing ring compounds. In particular, this strain could use both furan-2-carboxylic acid and thiophene-2-carboxylic acid as sole carbon and energy sources. Nitrogen-containing heterocyclic compounds were not degraded. This mutant was isolated by selecting first for oxidation of furan derivatives and then for thiophene degradation. Genetic analysis revealed that mutations in three novel genes, thdA (12 min), thdC (92 min), and thdD (98 min), were required for thiophene degradation. In addition, constitutively at both of the previously characterized fadR and atoC loci was required for efficient thiophene breakdown. The pathway of furan and thiophene degradation remains obscure, but the inability of our mutants to degrade 5-nitro- or 5-bromo-substituted furan derivatives suggests that hydroxylation at position 5 may be involved. Thiophene derivatives were toxic when they were present at concentrations of 0.1% or greater; however, addition of trace amounts of phenylalanine plus tyrosine greatly reduced this effect.
Computational Estimates of Electrically Small Antenna High-Contrast Polarizabilities

Polarizability has been shown to be a useful route for the calculation of the directivity-to-quality-factor ratio (D/Q) bound of electrically small antennas of arbitrary shape. We demonstrate that the same integral-equation-based moment method formulation used to determine the radiation patterns and input impedance of such antennas can also be used to estimate its polarizability, and hence D/Q bounds.
Entropy and Energy Bounds for Metastability Based TRNG with Lightweight Post-Processing

On-chip True Random Number Generators (TRNG) are important cryptographic primitives in a variety of applications. In advanced CMOS process technologies, intra-die variations in transistor parameters bias the TRNG and degrade the statistics of the bit stream generated. In this work, we present a stochastic model for metastability based TRNG circuit incorporating both the impact of intra-die variations and thermal noise. The stochastic model is used to estimate the expected entropy out of a TRNG at a given process corner for variations in channel length and threshold voltage. We use the stochastic model to study the impact of variations on three lightweight post-processing techniques: von Neumann corrector, XOR function, and PRESENT cipher. The expected bit rate out of von Neumann corrector, number of XOR stages required for entropy extraction and the number of iterations for using PRESENT encryption are estimated for various process corners using the probabilistic entropy values. These analyses are further extended to different device sizing and operating voltage to explore the optimum trade-off between entropy extraction and energy overhead. A combination of HSPICE circuit simulation using 32 nm Predictive Technology models and stochastic modeling in MatLab show that XOR function and von Neumann corrector have an energy overhead ranging from 0.012pJ/bit to 0.15pJ/bit at the cost of decreased yield and bit-rate respectively. PRESENT cipher provides robust entropy extraction by increasing the number of encryption iterations from 1 for to 3 for . With a maximum of 2.52pJ/bit PRESENT provides a more energy efficient solution compared to AES for entropy extraction in power constrained applications.
A Simplified Microwave Model and Its Application to the Determination of Some Oceanic Environmental Parametric Values, Using Multichannel Microwave Radiometric Observations

This paper proposes a simplified microwave model, linerized by Taylor expansion and incorporating observed fundamental microwave emissive properties, and discusses its application along with the least square method for determining some oceanic environmental parametric values from multichannel observation data. As a case study, microwave radiometric observations were made in vertical and horizontal polarizations at 6.7 and 18.6 GHz at incidence angles from 200 to 700 at steps of 100, and sea-surface temperature, wind speed, and sky brightness temperatures at the above dual frequencies at zenith angles from 200 to 700 were determined from a set of observed data at each incidence angle. The algorithm-derived results were compared with observed ones and showed good agreements within 10 percent of errors at incidence angles from 200 to 600; however, no good agreement was attained at large incidence angles such as 70°, except sky brightness temperature at 6.7 GHz. This disagreement may be attributed mainly to the difficulty and incompleteness in corrections such as estimation of reflected sky radiation and antenna characteristics, both for retrieval of the antenna temperature averaged over the main lobe and observation errors. This fact, however, may also suggest that observations at such larger incidence angles are of less utility.
Ontology-Based Matchmaking Approach for Context-Aware Recommendations

In this short paper, we present a series of ontologies allowing modeling of user, multimedia content and context, and a rule-based matchmaking approach for recommending systems. Category-based preferences as well as the expression of any interest concerning a concept formalized in an ontology are allowed. Furthermore, recommendations can be provided adequately in different situations as the user ontology allows expressing context-dependent interests. The approach has been successfully applied in a prototype of video recommender for mobile device.
Managers ’ Trading Intention and the Performance of Newly Listed Firms

We examine a sample of IPOs in which pre-IPO owners/managers’ shares are restricted from selling to highlight the impact of their trading intention on firm performance. Share price, accounting and relative performance measures are all significantly stronger during the restricted than the unrestricted period. These performance changes coincide with an increase in information asymmetries and an accelerated disposal of pre-IPO owners’ shares. They are also related to the proportion and duration of restricted shares, and cannot be simply explained by the IPO under-performance phenomenon, as well as the size and book-to-market effects. Our results suggest that agency problems are exacerbated when managers have the ability and intention to relinquish their ownership and support a wider and stricter application of trading restrictions in IPOs. † Peter Pham is from the School of Banking and Finance, University of New South Wales. Balasingham Balachandran and Michael Skully are both from the Department of Accounting and Finance, Monash University. We would like to thank from comments by Mohamed Ariff, Rob Brown, Beverly Marshall, Kim Sawyer, Sheridan Titman, Terry Walter, conference participants at the Financial Management Association Meeting, and seminar participants at the University of Melbourne and Monash University. We are solely responsible for any remaining errors. Corresponding author and address: Peter Kien Pham, School of Banking and Finance, UNSW, NSW 2052, Australia. Email: p.pham@unsw.edu. au.
Clinical Effects of Lisdexamfetamine and Mixed Amphetamine Salts Immediate Release in Adult ADHD: Results of a Crossover Design Clinical Trial

Abstract Objectives: To examine the clinical effects of equivalent doses of single-blind (SB; patient-blind) lisdexamfetamine (LDX) and mixed amphetamine salts-immediate release (MAS-IR) on adult attention-deficit/hyperactivity disorder (ADHD) in a placebo (PBO)-controlled, crossover design. Methods: Twenty-four subjects were treated sequentially in a fixed order with (1) SB PBO (matching LDX) for 1 week, (2) SB LDX (up to 70 mg/day) for 5 weeks, (3) SB PBO washout for 3 weeks, and (4) open-label treatment MAS-IR (tid up to 45 mg/day) for 5 weeks. Clinical effects on ADHD and executive function were assessed weekly throughout the trial with the ADHD Rating Scale with adult prompts, the Clinical Global Impression Severity Scale (CGI-S), and the Behavior Rating Inventory of Executive Function (BRIEF). Results: Lisdexamfetamine and MAS-IR were generally well tolerated. Significant and equal reductions on ADHD clinician ratings were seen. Significantly greater reductions in CGI-S and selected BRIEF subsets were observed in LDX over MAS-IR treatment. However, in general, baseline scores for MAS-IR treatment did not fully return to the LDX baseline. Adherence in this structured and monitored clinical trial was good for once daily LDX and 3 times a day MAS-IR. Conclusions: In this crossover study, both LDX and MAS-IR had significant effects on ADHD clinician ratings and measures of executive function (with response rates of about 80%); patients in this monitored clinical trial were adherent with once daily LDX and 3 times a day MAS-IR, which may not be the case in real-world clinical practice. The findings of some superiority of LDX over MAS-IR on the CGI-S and BRIEF ratings may be influenced by the variability in the baselines used, but nevertheless should be further investigated in larger scale, parallel-design clinical trials.
P1D-8 Strain Imaging with Intravascular Ultrasound: An In Vivo Study

Coronary atherosclerosis is a common disease in industrialized countries. Acute coronary syndromes are associated with a high mortality rate. They are usually caused by a sudden occlusion of the coronary lumen due to rupture of unstable plaques in the vessel wall, often with less than 50 % stenosis. Thus, plaque morphology does not give sufficient information for determining the risk of an acute syndrome. However, the mechanical properties of vulnerable coronary plaques were shown to be different from other plaque types. Therefore, IVUS strain imaging can be an important imaging tool for risk assessment of plaques
Network Function Placement for NFV Chaining in Packet/Optical Datacenters

In an operator's datacenter, optical technologies can be employed to perform network function (NF) chaining for larger aggregated flows in parallel with the conventional packet-based fine-grained traffic steering schemes. When network function virtualization (NFV) is enabled, virtualized NFs (vNF) can be placed when and where needed. In this study, we identify the possibility of minimizing the expensive optical/electronic/optical (O/E/O) conversions for NFV chaining in packet/optical datacenters, which is introduced by the on-demand placement of vNFs. When the vNFs of the same NF chain are properly grouped into fewer pods, traffic flows can avoid unnecessary traversals in the optical domain. We formulate the problem of optimal vNF placement in binary integer programming (BIP), and propose an alternative efficient heuristic algorithm to solve this problem. Evaluation results show that our algorithm can achieve near-optimal O/E/O conversions comparable to BIP. We also demonstrate the effectiveness of our algorithm under various scenarios, with comparison to a simple first-fit algorithm.