Miracle-dz/UniFAR-FTUs huggingface dataset:
Is Online Consumers’ Impulsive Buying Beneficial for E-Commerce Companies? An Empirical Investigation of Online Consumers’ Past Impulsive Buying Behaviors

ABSTRACT Previous studies emphasized that e-businesses could increase sales with marketing strategies on shopping web sites that induce impulsive buying behavior, and lacked an empirical approach to problems caused by impulsive buying. This study proposes a research model that deals with online consumers’ impulsive buying behavior and empirically validates it. The results show that impulsive buying could have a strong impact on post e-commerce purchase intention and behavior such as actual behavioral return tendency of goods.
Structural Biology and Crystallization Communications Structure of the Uracil Complex of Vaccinia Virus Uracil Dna Glycosylase

Poxvirus uracil DNA glycosylases are the most diverse members of the family I uracil DNA glycosylases (UNGs). The crystal structure of the uracil complex of Vaccinia virus uracil DNA glycosylase (D4) was determined at 2.03 A ˚ resolution. One uracil molecule was located in the active-site pocket in each of the 12 noncrystallographic symmetry-related D4 subunits. Although the UNGs of the poxviruses (including D4) feature significant differences in the characteristic motifs designated for uracil recognition and in the base-excision mechanism, the architecture of the active-site pocket in D4 is very similar to that in UNGs of other organisms. Overall, the interactions of the bound uracil with the active-site residues are also similar to the interactions previously observed in the structures of human and Escherichia coli UNG.
Multiple input multiple output Dirty paper coding: System design and performance

In this paper, a practical multiple input multiple output Dirty paper coding (MIMO-DPC) scheme is designed to cancel the effect of additive interference that is known perfectly to the transmitter. The proposed system uses a trio of encoders - a LDPC code, a vector quantizer implemented as a convolutional decoder and an Orthogonal space time block code (STBC) to achieve temporal coding gain, interference cancelation and spatial diversity, respectively. First, we derive the equivalent noise seen by the receiver using an equivalent lattice based dirty paper code. Then the optimal value of the power inflation factor, which is one of the key system parameters used to minimize the equivalent noise seen by the receiver is derived. Furthermore, we analytically prove that the equivalent noise seen by the receiver tends to 0 for large number of receive antennas. Performance results in the case of various number of receiver antennas are presented and show that significant reduction in bit error probabilities can be obtained over a system that uses no interference cancelation.
Impulse Response Measurements Using All-Pass Deconvolution

A method of measuring impulse responses of rooms will be described which uses time reversed electronic reverberation from a single pulse as the excitation. The room response, recorded on DAT, is decoded by playing the tape back through the reverberator. The output can be heard, recorded, or analyzed. The method improves S/N by 20 dB and can be implemented with approximately 14 multiples/sample on a PC.
Comparison of cryopreservative effect of different levels of omega-3 egg-yolk in citrate extender on the quality of goat spermatozoa.

The objective of the present study was to compare quality of chilled and frozenthawed goat semen processed in citrate extender containing 3 different levels (2.5, 5 and 10%) of omega-3 egg-yolk (EY). Ejaculates were collected from five adult goats using artificial vagina. Quality of fresh semen, processed semen after 3 hrs of chilling and 24 hrs of freezing was assessed based on live sperm %age, abnormality (determined by eosin-nigrosin stain) and general and progressive motility (evaluated by CEROS computer assisted semen analyzer). The result showed a significant (P<0.05) decrease in post-chilled live sperm %age from the fresh sample for extenders using 2.5 and 5% EY but not for the 10%. Moreover, a significantly lower percentage general and progressive motility was recorded using the 2.5% EY compared to the others that showed post-chilled sperm motility non-significantly different from the fresh sample. After chilling, 5% EY showed significantly lower percent sperm abnormalities compared to others. However, the abnormalities increased after freezing to a level non-significantly different from the 10% EY that sustained to demonstrate higher live sperm %age and motility than both 2.5 and 5% EY. An overall increase in post-thawed live sperm %age, general and progressive motility was observed with increase in concentration of EY added. Thus, though the difference with the 5% EY is in magnitude, the 10% omega-3 EY in citrate extender is preferred compared to 2.5% for superior post-thawed goat semen quality, extended without washing seminal plasma.
Asymmetric Bouc–Wen hysteresis modeling and inverse compensation for piezoelectric actuator via a genetic algorithm–based particle swarm optimization identification algorithm

The hysteresis characteristics, which commonly existed in smart materials–based actuators, play a significant role in precision control technology. In this article, a modified Bouc–Wen model which can describe the asymmetric hysteresis characteristics of piezoelectric ceramic actuators is investigated. The corresponding parameters of the modified Bouc–Wen hysteresis model are identified through a genetic algorithm–based particle swarm optimization algorithm. Compared with independent particle swarm optimization method which is easily trapped in the local extremum, the proposed genetic algorithm–based particle swarm optimization features the strong searching ability both in early global search period and the later local search period. The experimental results show that the asymmetric Bouc–Wen model identified via genetic algorithm–based particle swarm optimization algorithm are more accurate than that identified through independent particle swarm optimization or genetic algorithm approach, and the maximum displacement error and the maximum relative error between the genetic algorithm–based particle swarm optimization model and the experimental value are 0.20 µm and 14.28%, respectively, which are much smaller than that of particle swarm optimization method with 0.67 µm and 47.85% and genetic algorithm method with 0.35 µm and 25%. In order to further verify the accuracy of the identified model, the hysteresis compensation of piezoelectric ceramic actuator was realized using the feedforward controller based on the inverse Bouc–Wen model.
A closed-form phase noise solution for an ideal LC oscillator

A closed-form impulse response is derived for a parallel RLC circuit. Modeling thermal noise as current impulse injections to the circuit, the phase and amplitude noise of an ideal LC oscillator are obtained using the closed-form RLC impulse response. Furthermore, the Taylor series expansion method is used to obtain a linearized phase noise model. For this linearized model, the phase change function obtained from our solution verifies the impulse sensitivity function (ISF) from previously published results. Meanwhile, since this close-form solution is non-linear in its original form, the proposed solution can potentially facilitate a non-linear power spectrum analysis of the phase noise in an ideal LC oscillator.
Accurate Temperature-Dependent Integrated Circuit Leakage Power Estimation is Easy

It has been the conventional assumption that, due to the superlinear dependence of leakage power consumption on temperature, and widely varying on-chip temperature profiles, accurate leakage estimation requires detailed knowledge of thermal profile. Leakage power depends on integrated circuit (IC) thermal profile and circuit design style. The authors show that linear models can be used to permit highly-accurate leakage estimation over the operating temperature ranges in real ICs. The authors then show that for typical IC packages and cooling structures, a given amount of heat introduced at any position in the active layer will have similar impact on the average temperature of the layer. These two observations allow us to prove that, for wide ranges of design styles and operating temperatures, extremely fast, coarse-grained thermal models, combined with linear leakage power consumption models, permit highly-accurate system-wide leakage power consumption estimation. The results of our proofs are further confirmed via comparisons with leakage estimation based on detailed, time-consuming thermal analysis techniques. Experimental results indicate that the proposed technique yields a 59,259times-1,790,000times speedup in leakage power estimation while maintaining accuracy
Occurrence of Cryptosporidium spp. in Antillean Manatees (Trichechus manatus) and Amazonian Manatees (Trichechus inunguis) from Brazil

Abstract: Infections by Cryptosporidium spp. in aquatic mammals is a major concern due to the possibility of the waterborne transmission of oocysts. The aim of the present study was to report the occurrence of Cryptosporidium spp. in Antillean manatees (Trichechus manatus) and Amazonian manatees (Trichechus inunguis) from Brazil. Fecal samples were collected and processed using Kinyoun's method. Positive samples were also submitted to the direct immunofluorescence test. The results revealed the presence of Cryptosporidium spp. oocysts in 12.5% (17/136) of the material obtained from the Antillean manatees and in 4.3% (05/115) of the samples from the Amazonian manatees. Cryptosporidium spp. infection was more prevalent in captive animals than in free-ranging specimens.
Cognitive cladistics and cultural override in Hominid spatial cognition

Current approaches to human cognition often take a strong nativist stance based on Western adult performance, backed up where possible by neonate and infant research and almost never by comparative research across the Hominidae. Recent research suggests considerable cross-cultural differences in cognitive strategies, including relational thinking, a domain where infant research is impossible because of lack of cognitive maturation. Here, we apply the same paradigm across children and adults of different cultures and across all nonhuman great ape genera. We find that both child and adult spatial cognition systematically varies with language and culture but that, nevertheless, there is a clear inherited bias for one spatial strategy in the great apes. It is reasonable to conclude, we argue, that language and culture mask the native tendencies in our species. This cladistic approach suggests that the correct perspective on human cognition is neither nativist uniformitarian nor “blank slate” but recognizes the powerful impact that language and culture can have on our shared primate cognitive biases.
Accounting for Data Errors Discovered from an Audit in Multiple Linear Regression

Summary A data coordinating team performed onsite audits and discovered discrepancies between the data sent to the coordinating center and that recorded at sites. We present statistical methods for incorporating audit results into analyses. This can be thought of as a measurement error problem, where the distribution of errors is a mixture with a point mass at 0. If the error rate is nonzero, then even if the mean of the discrepancy between the reported and correct values of a predictor is 0, naive estimates of the association between two continuous variables will be biased. We consider scenarios where there are (1) errors in the predictor, (2) errors in the outcome, and (3) possibly correlated errors in the predictor and outcome. We show how to incorporate the error rate and magnitude, estimated from a random subset (the audited records), to compute unbiased estimates of association and proper confidence intervals. We then extend these results to multiple linear regression where multiple covariates may be incorrect in the database and the rate and magnitude of the errors may depend on study site. We study the finite sample properties of our estimators using simulations, discuss some practical considerations, and illustrate our methods with data from 2815 HIV‐infected patients in Latin America, of whom 234 had their data audited using a sequential auditing plan.
Raising awareness of the accessibility challenges in mathematics MOOCs

MOOCs provide learning environments that make it easier for learners to study from anywhere, at their own pace and with open access to content. This has revolutionised the field of eLearning, but accessibility continues to be a problem, even more so if we include the complexity of the STEM disciplines which have their own specific characteristics. This work presents an analysis of the accessibility of several MOOC platforms which provide courses in mathematics. We attempt to visualise the main web accessibility problems and challenges that disabled learners could face in taking these types of courses, both in general and specifically in the context of the subject of mathematics.
Virgin and Recurrent Groin Hernia: A Comparison of Patient Recovery Following Endoscopic Preperitoneal Herniorrhaphy

Introduction: The advantage of minimally invasive hernia repair techniques remains controversial. One of the more established indications for this technique's use is the presence of a recurrent hernia. No prior study has compared the recovery following endoscopic repair of virgin and recurrent hernias. Patients and Methods: Between July 15, 1994 through August 16, 1996, one primary surgeon supervised the performance of 373 hernia repairs on 250 patients. Twenty-two patients underwent endoscopic preperitoneal herniorrhaphy for unilateral recurrent groin hernia (RH), while 105 patients underwent repair of a virgin unilateral hernia (VH) in the absence of prior contralateral open hernia repair. No significant differences were seen for age (VH: 54, RH: 64), male:female ratio (VH: 92:13, RH: 22:0), operative time (VH: 58 min, RH: 59 min), anesthetic used, IV fluid requirements or blood loss (p > 0.05 for all comparisons). At the time of discharge, all patients were given a postoperative survey and asked to record their level of pain, narcotic use, and level of activity on the day of surgery and postoperative days 1, 2, 3, 7, 14, and 28. Results: Patients undergoing repair of virgin hernias had statistically significant increased levels of pain and/or narcotic use on the day of surgery and postoperative days 1, 2 and 3. Despite these differences, level of activity and return to work/normal activity (VH: 6.35+/- 3.44 days, RH: 6.40 +/- 2.67 days) were the same for the two groups. Conclusion: Despite the differences in pain perception and narcotic use in the early postoperative period, overall patient recovery appears similar for the two groups. Differences seen are likely due to a lack of any prior surgical pain to serve as a benchmark for comparison.
Philosophical Transactions of the Royal Society ASSOCIATIVE SEQUENCE LEARNING : THE ROLE OF EXPERIENCE IN THE DEVELOPMENT OF IMITATION AND THE MIRROR SYSTEM

A core requirement for imitation is a capacity to solve the correspondence problem; to map observed onto executed actions, even when observation and execution yield sensory inputs in different modalities and coordinate frames. Until recently, it was assumed that the human capacity to solve the correspondence problem is innate. However, it is now becoming apparent that, as predicted by the associative sequence learning model, experience, and especially sensorimotor experience, plays a critical role in the development of imitation. We review evidence from studies of nonhuman animals, children, and adults, focussing on research in cognitive neuroscience that uses training and naturally occurring variations in expertise to examine the role of experience in the formation of the mirror system. The relevance of this research depends on the widely held assumption that the mirror system plays a causal role in generating imitative behaviour. We also report original data supporting this assumption. These data show that theta-burst transcranial magnetic stimulation of the inferior frontal gyrus, a classical mirror system area, disrupts automatic imitation of finger movements. We discuss the implications of the evidence reviewed for the evolution, development and intentional control of imitation.
Metastatic Malignant Paraganglioma: A Case Report and Review of Literature

Metastasis is a rare presentation of non-secretory paraganglioma. Consequently, there is no standard of care for the treatment of metastatic malignant paraganglioma. The most widely used chemotherapy regimen for non-resectable cases includes cyclophosphamide, vincristine, and dacarbazine (CVD). CVD has been previously studied with variable therapeutic response. However, yttrium-90 (Y90) radioembolization has not been previously studied in the treatment of hepatic metastasis in patients diagnosed with malignant paraganglioma. This case report follows the treatment of a patient with stage IV mediastinal paraganglioma with metastasis to the liver. Treatment consisted of the CVD chemotherapy regimen and Y90 radioembolization of the hepatic lesions. After 10 cycles of CVD, the tumor size has decreased from 6.0 × 8.8 to 5.5 × 3.0 × 3.4 cm on computed tomography scan. The prominent metastatic liver lesions responded after Y90 radioembolization of both the right and left hepatic arteries. The prominent right hepatic lobe lesion has decreased in size from 2.6 × 3.4 × 3.0 cm to 2.6 × 2.8 × 2.9 cm. The prominent left hepatic lobe lesion originally measuring 1.6 cm in diameter completely resolved on follow-up imaging studies. After completion of 12 cycles of chemotherapy, the most recent positron emission testing scan determined no evidence of disease regarding both the primary mass and the hepatic lesions. This study demonstrates the first case of combination chemotherapy and Y90 radioembolization with a complete response per response evaluation criteria in solid tumors criteria. The approaches toward diagnosis and treatment corresponding to this case of malignant metastatic paraganglioma are also reviewed in this study.
0.4 V, 5.6 mW InP HEMT V-band Low-Noise Amplifier MMIC

This paper demonstrates the low-power operation of an InP HEMT V-band low-noise amplifier (LNA) MMIC. The device used here is a commercial 0.1-mum InP HEMT developed for high-speed digital ICs. The fabricated two-stage LNA MMIC, chip size of 0.9 mm2, employs two 50-mum gate-width InP HEMTs and coplanar waveguides. Under 0.4 V supply voltage operation, the MMIC achieves a noise figure of 2.86 dB at 60 GHz with an associated gain of 12.3 dB. The power dissipation of the MMIC was only 5.6 mW. The input IP3 was - 9 dBm at 60 GHz. A 3-dB bandwidth of 44.6 GHz to 67.2 GHz was also achieved. These results indicate the InP HEMT technology has a great potential for the low-voltage and low-power ICs that are needed for future millimeter-wave high-speed wireless applications
In Vivo and In Vitro Antidiabetic Activity of Terminalia paniculata Bark: An Evaluation of Possible Phytoconstituents and Mechanisms for Blood Glucose Control in Diabetes

The present study was aimed to investigate in vivo, in vitro antidiabetic activity of aqueous extract of Terminalia paniculata bark (AETPB) and characterize its possible phytoconstituents responsible for the actions. Type 2 diabetes was induced in rats by streptozotocin-nicotinamide (65 mg/kg–110 mg/kg; i.p.) administration. Oral treatment of AETPB using rat oral needle at 100 and 200 mg/kg doses significantly (P < 0.001) decreased blood glucose and glycosylated haemoglobin levels in diabetic rats than diabetic control rats. AETPB-treated diabetic rats body weight, total protein, insulin, and haemoglobin levels were increased significantly (P < 0.001) than diabetic control rats. A significant (P < 0.001) reduction of total cholesterol and triglycerides and increase in high-density lipoprotein levels were observed in type 2 diabetic rats after AETPB administration. Presence of biomarkers gallic acid, ellagic acid, catechin, and epicatechin in AETPB was confirmed in HPLC analysis. AETPB and gallic acid showed significant (P < 0.001) enhancement of glucose uptake action in presence of insulin in muscle cells than vehicle control. Also AETPB inhibited pancreatic α-amylase and α-glucosidase enzymes. In conclusion, the above actions might be responsible for the antidiabetic activity of AETPB due to presence of gallic acid and other biomarkers.
Arrhythmias and symptoms during treadmill testing three weeks after myocardial infarction in 100 patients.

Treadmill tests with continuous electrocardiographic recording were carried out 3 weeks after the acute episode began on 0OO patients with myocardial infarction. Ventricular premature beats were recorded in 3 patients at rest immediately before the test, and in I9 during and/or after the test. The test led to a change of treatment for i6 patients. No severe arrhythmias or reinfarctions were induced by the test. Twenty patients developed angina pectoris. The incidence of ventricular premature beats during the test was higher in the patients with arrhythmia during the acute phase (O1/37) than in those without (7/55). This difference is not statistically significant. The treadmill test proved to be a sensitive method for demonstrating a tendency to arrhythmia in patients with recent infarction. It permits observation of the patient during exercise similar to that performed during rehabilitation.
A Distribution-based Model to Learn Bilingual Word Embeddings

We introduce a distribution based model to learn bilingual word embeddings from monolingual data. It is simple, effective and does not require any parallel data or any seed lexicon. We take advantage of the fact that word embeddings are usually in form of dense real-valued low-dimensional vector and therefore the distribution of them can be accurately estimated. A novel cross-lingual learning objective is proposed which directly matches the distributions of word embeddings in one language with that in the other language. During the joint learning process, we dynamically estimate the distributions of word embeddings in two languages respectively and minimize the dissimilarity between them through standard back propagation algorithm. Our learned bilingual word embeddings allow to group each word and its translations together in the shared vector space. We demonstrate the utility of the learned embeddings on the task of finding word-to-word translations from monolingual corpora. Our model achieved encouraging performance on data in both related languages and substantially different languages.
Impact of dressing infeed on SiC wheel for grinding Ti-6Al-4V

ABSTRACT Present experimental investigation is directed toward the optimization of dressing infeed for silicon carbide (SiC) wheel to be employed for grinding difficult-to-machine super alloy Ti-6Al-4V. Grinding wheels are dressed using separate, however, identical 0.75 carat single point diamond dressers at 5, 10, 15, 20 and 25 µm infeed values. Differently dressed wheels are consequently, applied for grinding Ti-6Al-4V under different infeed values of 5, 10 and 15 µm. All the operations have been performed at a constant velocity of 1810 m/min. The performances of the differently dressed SiC wheels are evaluated based on the variations of grinding force components, average surface roughness values, grinding ratio, chip forms and based on the analyses of the micrographs of wheel topologies and also of the ground surfaces, obtained using scanning electron microscope. Following the performance evaluation, the optimized dressing infeed has been found to be 20 µm for the operation range considered herein.