Miracle-dz/UniFAR-FTUs huggingface dataset:
Proposta de estudo das harmónicas no Sistema Industrial Sonangol - Namibe a partir de seu levantamento elétrico

espanolLa importancia de considerar los efectos de la distorsion armonica en las instalaciones electricas adquiere mayor relevancia debido a la proliferacion de las cargas denominadas no lineales. Este fenomeno contamina la red electrica de una instalacion y puede afectar el funcionamiento de los aparatos conectados a ella cuando sobrepasa determinados limites. Por lo que los objetivos perseguidos en el articulo, son realizar un estudio en el Sistema Industrial Sonangol - Namibe diagnosticando las principales componentes de armonicos que influyen en el mismo, proponer el/los metodo(s) y procedimientos de eliminacion como son los filtros armonicos pasivos utilizados para reducir las distorsiones causadas, a partir del levantamiento electrico de la instalacion. Tambien se presenta una revision general sobre los indicadores relacionados con los armonicos y equipos generadores, en las redes electricas, utilizandose documentos de referencia como: las recomendaciones de la IEEE 519-1992, el conjunto de normas IEC-61000, NRS 048-2 y EN 50160. EnglishThe importance of considering the effects of harmonic distortion on electrical installations becomes more relevant because of the proliferation of so-called "non-linear" loads. This phenomenon contaminates the electrical network of an installation and can affect the operation of the devices connected to it when it exceeds certain limits. Therefore, the objectives sought in the article are to perform a study in the Sonangol - Namibe Industrial System components of harmonics that influence the same, propose the method (s) and procedures of elimination as are the passive filters used to reduce the distortions originated, From the electrical survey of the installation. A general review is also presented on the indicators related to harmonics and generators in electrical networks, using reference documents such as: IEEE 519-1992 recommendations, IEC-61000, NRS 048-2 and EN 50160. portuguesA importância de considerar os efeitos da distorcao harmonica nas instalacoes eletricas adquire maior relevância devido a proliferacao das cargas nomeadas nao lineares. Este fenomeno contamina a rede eletrica de uma instalacao e pode afetar o funcionamento dos aparelhos ligados a ela quando ultrapassa determinados limites. Pelo que os objetivos procurados no artigo, sao realizar um estudo no Sistema Industrial Sonangol - Namibe componentes de harmonicas que influem no mesmo, propor o(s) metodo(s) e procedimentos de eliminacao como sao os filtros passivos utilizados para reduzir as distorcoes originadas, a partir do levantamento eletrico da instalacao. Tambem se apresenta uma revisao geral sobre os indicadores relacionados com as harmonicas e aparelhos geradores, nas redes eletricas, utilizando-se documentos de referencia como: as recomendacoes da IEEE 519-1992, o conjunto de normas IEC-61000, NRS 048-2 e EN 50160.
Dynamic point labeling is strongly PSPACE-hard

An important but strongly NP-hard problem in automated cartography is how to best place textual labels for point features on a static map. We examine the complexity of various generalizations of this problem for dynamic and/or interactive maps. Specifically, we show that it is strongly PSPACE-hard to obtain a smooth dynamic labeling (function from time to static labelings) when the points move, when points are added and removed, or when the user pans, rotates, and/or zooms their view of the points.
ESTIMATION OF PLASMA BNP (BRAIN NATRIURETIC PEPTIDE) IN PATIENTS WITH CONGESTIVE HEART FAILURE: A DIAGNOSTIC AID

To evaluate the levels of plasma BNP (Brain natriuretic peptide) in-patients suffering from transmural myocardial infarction of anterior wall (AMI) with and without congestive heart failure. The present study was carried out at Hamdard College of Medicine and Dentistry in collaboration with National Institute of Cardiovascular Diseases Karachi from Jan 2004 to Aug 2004. Seventy subjects were selected in a case control study. Thirty-five patients suffering from transmural myocardial infarction of anterior wall with out congestive heart failure (mean age 45.77 ± 1.76) and thirty five patients suffering from transmural myocardial infarction of anterior wall with congestive heart failure (mean age 46.86 ± 1.15). Their histories were taken and they were physically examined. Two fasting venous blood samples were collected; one is additive free blood while other containing EDTA. Baseline characters of the two groups were similar. Mean plasma BNP levels was [86.92 ± 6.60pg/ml, 510.16 ± 50.51 pg/ml respectively] in MI patients without failure and MI patients with failure, the levels are significantly high in patients with failure as compared to non failure. CONCLUSION: Significantly high levels of plasma BNP in transmural MI patients with failure suggests a diagnostic importance to be use as a marker for early identification of CHF.
Hématomes limités à la tête du noyau caudé

: We studied five patients with cerebral hemorrhage limited to the head of the caudate nucleus. This rare localization represents 11% of central nuclei hemorrhages. This entity has various clinical expressions; some are similar to a subarachnoid hemorrhage, others show the same manifestations associated with hemiparesis and neuropsychological findings, while still in others, the neuropsychological syndrome with speech, behaviour or memory disturbances predominates. Recovery depends on the patient's previous clinical status and on the presence of associated lesions at the time of hemorrhage. Typical warning signs, like headache, are often absent in the elderly and debilitated. Meningismus is explained by the intraventricular extension of the hemorrhage. Motor deficit, usually moderate, is probably due to impairment of the anterior portion of the posterior arm of the internal capsule. Destruction of the head of the left caudate nucleus, which is part of the circuit causing "subcortical aphasias", is responsible for non specific speech disturbances, that are however remarkably rich in semantic paraphasias. These dysfunctions could be caused by a "cortical diaschisis" as suggested by SPECT analysis. Memory dysfunction as a result of caudate lesion is questioned. However confusion and behavioural disturbances, like preservations, transitory mutism and self neglect, seem characteristic. As shown by cerebral blood flow (CBF) studies, these disturbances might represent a frontal dysfunction caused by the interruption of the dorso-latero-prefrontal and orbito-frontal circuits. When the hemorrhage extends beyond the head of the caudate nucleus, behavioural changes occur due to the involvement of neighbouring structures such as the thalamus, internal capsule, temporal lobe and nucleus accumbens. Caudate hemorrhages occur mostly in the elderly, often with long-standing arterial hypertension causing lesions of the lenticulo-striate arteries. Severe stenosis or complete occlusion of the middle cerebral artery with a fragile anastomotic circuit or angiopathies in younger individuals (particularly Asiatics: moyamoya disease) are less frequent, but they should be considered and investigated by arteriography. Vascular malformations are a rare cause and a relationship with amyloid angiopathy can only be suspected.
The Stata Journal

We present a new e-class command, acfest, that implements the method of Ackerberg, Caves, and Frazer (2015, Econometrica 83: 2411–2451) to estimate production functions. This method deals with the functional dependence problems that may arise in the methods proposed by Olley and Pakes (1996, Econometrica 64: 1263–1297) and, particularly, Levinsohn and Petrin (2003, Review of Economic Studies 70: 317–341) (implemented in Stata by Yasar, Raciborski, and Poi [2008, Stata Journal 8: 221–231] and Petrin, Poi, and Levinsohn [2004, Stata Journal 4: 113–123], respectively). In particular, the acfest command yields (nonlinear, robust) generalized method of moments estimates using a Mata function and two specification tests (Wald and Sargan–Hansen). After estimation, predict provides the estimated productivity of the firms in the sample.
Luiss Lab on European Economics LLEE Working Document no.# 30 The Stock Market and the Fed

The paper investigates the reaction of the Federal Reserve to developments in the stock market. The issue is analyzed by first constructing an Index of Stock Price Misalignement in which the fundamental value of the stocks is computed on the basis of the discounted cash flow approach and by then including this index, among the regressors, into a forward looking Taylor rule. In accordance with the descriptive evidence, based mainly on the analysis of the FOMC meetings and public statements, our findings show that the Fed tends to lower the Fed funds rate when stock prices fall below their fundamental value, while there is no evidence of monetary stringency during episodes of exhuberance in the stock market. (*) Università di Roma “Tor Vergata”, Facoltà di Economia, Via Columbia 2, 00133 Roma. The authors thank A. Santomero, C. Favero, I.Hasan, G. Marini, F. Natalucci. The usual disclaimer applies.
Effect of Different Dietary Levels of Acid Whey Powder on Growth Pe

The present study was carried out to evaluate the effect of different levels of acid whey powder (AWP) and low lactose acid whey powder (LLAWP) on growth performance and immunity of broiler chicks. A total of 416 one-day old broiler chicks (Ross 308) were randomly allocated to 1 of 8 isocaloric and isonitrogenous dietary treatments (4 pen replicates; 13 birds per pen) and grown over a 42-d experimental period. The Dietary treatments included control, 1, 2.5, 5, 7.5% AWP and 2.5, 5 and 7.5% LLAWP. Body weight gain (BWG), feed intake (FI) and feed conversion ratio (FCR) were recorded biweekly throughout 42 d. Antibody titers against Newcastle and influenza viruses and sheep red blood cells (SRBC) were determined to evaluate immune responses. In overall growth period, BWG in broilers received 2.5 or 5% LLAWP significantly increased and FCR in those fed 2.5% LLAWP decreased (p<0.05). Broilers received 5% LLAWP had the greatest FI in overall growth period (p<0.05). Lymphoid organs weight and antibody titers against Newcastle and influenza viruses and SRBC were not affected significantly by dietary treatments (p>0.05). It was concluded that, 2.5% dietary LLAWP improved performance and AWP could be used up to 5% in diet without adverse effects on performance and immunity of broiler chicks.
Abstractive Timeline Summarization

Timeline summarization (TLS) automatically identifies key dates of major events and provides short descriptions of what happened on these dates. Previous approaches to TLS have focused on extractive methods. In contrast, we suggest an abstractive timeline summarization system. Our system is entirely unsupervised, which makes it especially suited to TLS where there are very few gold summaries available for training of supervised systems. In addition, we present the first abstractive oracle experiments for TLS. Our system outperforms extractive competitors in terms of ROUGE when the number of input documents is high and the output requires strong compression. In these cases, our oracle experiments confirm that our approach also has a higher upper bound for ROUGE scores than extractive methods. A study with human judges shows that our abstractive system also produces output that is easy to read and understand.
The Effects of Helmet Therapy Relative to the Size of the Anterior Fontanelle in Nonsynostotic Plagiocephaly: A Retrospective Study

Helmet therapy is an important nonsurgical approach for patients with nonsynostotic plagiocephaly, but its effectiveness may depend on certain anatomical features. We retrospectively examined the effects of helmet therapy according to the size of the anterior fontanelle. Two hundred patients with nonsynostotic plagiocephaly who underwent helmet therapy between 2016 and 2018 were included. Data regarding age at treatment onset and treatment duration were collected. Patients were divided into two groups depending on the age at treatment initiation: the 12–23 weeks group and the >23 weeks group. Patients were also divided based on the anterior fontanelle size to analyze the effects of helmet therapy according to the severity of plagiocephaly in each group as the change in the cranial vault asymmetry index (CVAI). Therapeutic effects were evaluated using the cranial vault asymmetry (CVA), CVAI, anterior symmetry ratio, posterior symmetry ratio (PSR), and overall symmetry ratio at baseline and treatment completion. Treatment initiation at age 12–23 weeks resulted in better effects than that after age 24 weeks. There were no sex-dependent differences in therapeutic effects. Greater changes in the CVA, CVAI, and PSR were associated with larger anterior fontanelles. Therefore, the anterior fontanelle size could be a prognostic factor for estimating helmet therapy outcomes.
Heterogeneity of Vascular Endothelial Cells, De Novo Arteriogenesis and Therapeutic Implications in Pancreatic Neuroendocrine Tumors

Arteriogenesis supplies oxygen and nutrients in the tumor microenvironment (TME), which may play an important role in tumor growth and metastasis. Pancreatic neuroendocrine tumors (pNETs) are the second most common pancreatic malignancy and are frequently metastatic on presentation. Nearly a third of pNETs secrete bioactive substances causing debilitating symptoms. Current treatment options for metastatic pNETs are limited. Importantly, these tumors are highly vascularized and heterogeneous neoplasms, in which the heterogeneity of vascular endothelial cells (ECs) and de novo arteriogenesis may be critical for their progression. Current anti-angiogenetic targeted treatments have not shown substantial clinical benefits, and they are poorly tolerated. This review article describes EC heterogeneity and heterogeneous tumor-associated ECs (TAECs) in the TME and emphasizes the concept of de novo arteriogenesis in the TME. The authors also emphasize the challenges of current antiangiogenic therapy in pNETs and discuss the potential of tumor arteriogenesis as a novel therapeutic target. Finally, the authors prospect the clinical potential of targeting the FoxO1-CD36-Notch pathway that is associated with both pNET progression and arteriogenesis and provide insights into the clinical implications of targeting plasticity of cancer stem cells (CSCs) and vascular niche, particularly the arteriolar niche within the TME in pNETs, which will also provide insights into other types of cancer, including breast cancer, lung cancer, and malignant melanoma.
An N-gram-based Approach for Detecting Social Media Spambots

Ubiquitous nature of social media has transformed the businesses and society. With the rise of AI, artificial accounts, known as bots, have become more pervasive in the society accomplishing complicated tasks. However, they are accompanied with detrimental effects. They can be easily used for spreading fake news or ill-intended information. Detecting such artificial accounts before they cause any harm is an important however complicated task. To detect these spambots at their early stage, we propose a machine learning method that uses content features including n-grams (n many consecutive words) and information entropy. Our method builds up an n-gram dictionary from the content of spam tweets. This dictionary is then used as a benchmark for comparing the similarity of later tweets with the keywords of previous spam tweets. Our proposed n-gram based features have a better performance than the entropy-based feature alone. However, the best performance is achieved when n-gram features and entropy-based features combined. In addition, by using only the first 5% of the data for building n-gram benchmarks, we achieved 85% accuracy in detecting the source authenticity in the remaining data. Our methodology provides insights into the early detection of spambots as well as distinguishing the differences between machine-generated and humangenerated information.
The Influence of Destination Image on Tourist Loyalty and Intention to Visit: Testing a Multiple Mediation Approach

Pakistan holds an important geographical status, but extremism and sabotage have severely damaged the tourism industry. In the present study, we examined the impact of destination image (DI) on tourist loyalty (TL) and intension to visit (IV) in Pakistan. Additionally, the study analyzed the mediation effects of electronic word of mouth (eWOM) and tourist satisfaction (TS) on these relationships. Data was collected from 780 tourists in Pakistan. We used confirmatory factor analysis (CFA) and structural equation modeling (SEM) to obtain the results. Our results demonstrated the positive relationships among DI, eWOM, TS, TL, and IV. This study also disclosed that eWOM has a partial mediation effect on the DI–TL relationship, and both eWOM and TS fully mediate the association between DI and IV. Hence, tourist satisfaction can be enhanced by eWOM and destination image, which directly effect tourist loyalty and intention to visit in Pakistan. The proposed framework and research findings will help stakeholders significantly to recognize the multi-facet association in the tourism industry of Pakistan. Testing the above relationships through multiple mediators is a relatively novel idea.
A combinatorial approach to improving the performance of azoarene photoswitches

Azoarenes remain privileged photoswitches – molecules that can be interconverted between two states using light – enabling a huge range of light addressable multifunctional systems and materials. Two key innovations to improve the addressability and Z-isomer stability of the azoarenes have been ortho-substitution of the benzene ring(s) or replacement of one of the benzenes for a pyrazole (to give arylazopyrazole switches). Here we study the combination of such high-performance features within a single switch architecture. Through computational analysis and experimental measurements of representative examples, we demonstrate that ortho-benzene substitution of the arylazopyrazoles drastically increases the Z-isomer stability and allows further tuning of their addressability. This includes the discovery of new azopyrazoles with a Z-isomer thermal half-life of ≈46 years. Such results therefore define improved designs for high performance azo switches, which will allow for high precision optically addressable applications using such components.
Does the Confidence Fairy of Fiscal Consolidations Exist? Evidence from a New Narrative Dataset on Announcements of Fiscal Austerity Measures

Using a newly constructed dataset of announcements of fiscal consolidations, we explore the role of the confidence channel in shaping the effect of those announcements on macroeconomic aggregates. Overall, consumer confidence falls and long interest rates rise upon the announcement of a fiscal consolidation. These effects are stronger for revenue-based announcements than for spending-based announcements. Counterfactual experiments show that the combined effect of the responses of consumer confidence and interest rates amplifies the negative effect on the real economy of announcements of revenue-based austerity measures.
A study of the psychological variables of physical exercise behaviors of college students

In order to probe into the specific working path of exercise behavior related psychological variables, and to improve strategies for intervening exercise behaviors, the authors investigated college freshmen and sophomores by using a measurement form titled Exercise Attitude, and revealed the following findings: 1) subjective standard, emotional experience, behavior intention etc, play a significant direct role in exercise behaviors, while the direct role played by behavior attitude in exercise behaviors is insignificant; 2) behavior intention may be an important mediating variable, many psychological variables may work on exercise behaviors via this mediating variable; 3) the overall exercise behavior prediction rate of exercise attitude reaches 32.9%, in which the explanation rates of behavior habit and objective attitude are the highest (R=51.7%, 68.5%); 4) emotional experience has a significant path of working on various psychological variables, which means that it may be an important motive power for the forming and maintaining of exercise behavior; 5) some exercise behavior formation stage theories are questioned to a certain extent (e.g. health process behavior orientation theory), because some regulation variables do not have a linear continuous mode (e.g. subjective standard), thus they are more likely a discontinuous mode.
Gastrointestinal Bleeding Caused by Complications in a Patient Receiving Warfarin Therapy

A 76-year-old woman receiving warfarin for the prevention of stroke in the context of atrial fibrillation, a prior transient ischemic attack, a known enlarged left atrium, and depressed left ventricular function secondary to an old myocardial infarction presented with hypotension and melena. She was previously quite well, except as noted above. She had started passing bloody stools approximately 1 week earlier. On initial examination, the hemoglobin level was found to be 7.6 g/L and the prothrombin time international normalized ratio (INR) was 8.04. She was diagnosed with gastric ulcer bleeding. Here, we report a case of gastrointestinal bleeding caused by complications in a patient undergoing warfarin therapy.
Does resuscitative endovascular balloon occlusion of the aorta have a place in the prehospital setting for pelvic fracture patients in New Zealand ?

The 17th International Trauma Care Conference, April 2016 This year represents the 20th anniversary of the founding of Trauma Care and the 17th International conference. Building on the successes of previous conferences in Telford, the time had come to look for bigger facilities and this year’s conference was the biggest ever; over 1100 delegates and 200 speakers contributed to an enormously enjoyable and educational event at the Yarnfield Park Conference Centre in Stone, Staffordshire between 17 and 21 April. The standard of the lectures was uniformly excellent and the poster competition was again of the highest standard and the abstracts of all presented posters are published below. Those that were deemed to the best poster of each day are annotated *. Does resuscitative endovascular balloon occlusion of the aorta have a place in the prehospital setting for pelvic fracture patients in New Zealand?
THE ARTICULATORY REALITY OF CORONAL STOP 'DELETION'

Coronal Stop Deletion has been the subject of sociolinguistic inquiry in several varieties of English, and has enjoyed a special place in the pantheon of variable linguistic phenomena since its first description in [6]. Robust morphological conditioning (more deletion in monomorphemes like pact, than with -ed suffixes like in packed) suggests a phonological rather than phonetic character. However, the presumption of a categorical, structure-preserving, deletion process is largely an artifact of the articulatory-acoustic relation in stop consonants; anything less than full closure is not perceived as a stop. I present Electromagnetic Articulography results from the speech of several native speakers of American English, finding that deletion without residual tongue tip raising is rare, but some individuals produce articulatory categories that correlate non-deterministically with perceived deletion. Further, the investigation of a gradient measure for degree of tongue tip raising reveals systematic effects of articulatory interval duration, task, and morphological class.