Miracle-dz/UniFAR-FTUs huggingface dataset:
Coronal magnetohydrodynamic waves and oscillations: observations and quests

Coronal seismology, a new field of solar physics that emerged over the last 5 years, provides unique information on basic physical properties of the solar corona. The inhomogeneous coronal plasma supports a variety of magnetohydrodynamics (MHD) wave modes, which manifest themselves as standing waves (MHD oscillations) and propagating waves. Here, we briefly review the physical properties of observed MHD oscillations and waves, including fast kink modes, fast sausage modes, slow (acoustic) modes, torsional modes, their diagnostics of the coronal magnetic field, and their physical damping mechanisms. We discuss the excitation mechanisms of coronal MHD oscillations and waves: the origin of the exciter, exciter propagation, and excitation in magnetic reconnection outflow regions. Finally, we consider the role of coronal MHD oscillations and waves for coronal heating, the detectability of various MHD wave types, and we estimate the energies carried in the observed MHD waves and oscillations: Alfvénic MHD waves could potentially provide sufficient energy to sustain coronal heating, while acoustic MHD waves fall far short of the required coronal heating rates.
Various intensities of leisure time physical activity in patients with coronary artery disease: effects on cardiorespiratory fitness and progression of coronary atherosclerotic lesions.

OBJECTIVES This study was designed to define the effect of different levels of leisure time physical activity on cardiorespiratory fitness and progression of coronary atherosclerotic lesions in unselected patients with coronary artery disease. BACKGROUND It has been shown in various studies that regression of coronary atherosclerotic lesions can be achieved by means of lipid-lowering drugs, reduction of fat consumption and physical exercise. METHODS Patients were prospectively randomized either to an intervention group (n = 29) participating in regular physical exercise or to a control group (n = 33) receiving usual care. Energy expenditure in leisure time physical activity was estimated from standardized questionnaires and from participation in group exercise sessions. After 12 months of participation, repeat coronary angiography was performed; coronary lesions were measured by digital image processing. RESULTS After 1 year, patients in the intervention group achieved an increase in oxygen uptake at a ventilatory threshold of 7% (p < 0.001) and peak exercise of 14% (p < 0.05), whereas a significant decrease was observed in patients in the control group. To achieve significant improvement in cardiorespiratory fitness, approximately 1,400 kcal/week had to be expended in the form of leisure time physical activity (p < 0.001). The mean energy expended in such activity was 1,876 +/- 163 kcal/week in the intervention group and 1,187 +/- 97 kcal/week in the control group (p < 0.001). In the intervention group, regression of coronary artery disease was noted in 8 patients (28%), progression of disease in 3 (10%) and no change in coronary morphology in 18 (62%). In contrast, coronary artery disease progressed at a significantly faster rate in patients in the control group (progression in 45%, no change in 49% and regression in 6%) (p < 0.001 vs. intervention). When the two groups were combined, the lowest level of leisure time physical activity was noted in patients with progression of disease (1,022 +/- 142 kcal/week) as opposed to patients with no change (1,533 +/- 122 kcal/week) or regression of disease (2,204 +/- 237 kcal/week) (p < 0.005). CONCLUSIONS Measurable improvement in cardiorespiratory fitness requires approximately 1,400 kcal/week of leisure time physical activity; higher work loads are necessary to halt progression of coronary atherosclerotic lesions (1,533 +/- 122 kcal/week), whereas regression of coronary lesions is observed only in patients expending an average of 2,200 kcal/week in leisure time physical activity, amounting to approximately 5 to 6 h/week of regular physical exercise.
Favorable prognosis associated with hyperdiploidy in children with acute lymphocytic leukemia correlates with extra chromosome 6. A pediatric oncology group study

Pretreatment bone marrow cytogenetic studies were included for 1664 patients with acute lymphoblastic leukemia (ALL) accrued to Pediatric Oncology Group (POG) 8035 laboratory classification study from May 1981 through January 1986. There was a significant difference (P = 0.0001) in distribution of stem‐line karyotype (normal, hypodiploid, pseudodiploid, or hyperdiploid) among children with early pre‐B, pre‐B, or T‐cell ALL, with early pre‐B patients demonstrating a higher proportion of hyperdiploid karyotypes with modal chromosome numbers>51. Cytogenetic classification of 1216 patients with early pre‐B or pre‐B ALL evaluable for duration of event‐free survival (EFS), with median follow‐up of 42 months, showed a significant prolongation of five‐year EFS associated with hyperdiploidy>51 (75%; standard error [SE] = 5%) compared with hyperdiploidy 47 to 51 (46%; SE = 7%), hypodiploidy (55%; SE = 11%), and pseudodiploidy (45%; SE = 7%) (P = 0.0001). Five‐year EFS was intermediate for patients with normal (58%), constitutionally abnormal (66%), or unsuccessful analyses (66%). The breakpoint defining hyperdiploidy associated with better prognosis was best defined as>51 (P = 0.0002). Of 239 children with hyperdiploid karyotypes, analysis of the contribution of each chromosome to EFS duration showed a significant association between improved EFS and additional chromosome(s) six (P = 0.02). Chromosome translocation was associated with shorter EFS (P = 0.0001).
Evaluating the Tolerance of Some Wheat Varieties Towards Water Stress Induced by Sorbitol

This study was conducted at the Biotechnology Department, Swaida Research Center, GCSAR, and Syria during 2016. Eight wheat genotypes were screened at the seedling stage using Sorbitol to mimic drought in the laboratory. The experiment was performed using Complete Randomized Design and the genotypes were evaluated by Cluster analysis based on the sum of reduction ratios for shoot and root length. The results revealed variability in the experimented genotypes’ sensitivity towards water stress in shoot and root length. Cham 10 showed the highest values whereas Doma 1 recorded the lowest. These results referred to the existence of genetic variation among genotypes under study. In addition, Cluster analysis indicated classifying studied genotypes into two groups: tolerant group containing Cham 10 (the most tolerant genotype), Bohuth 11, Cham 3, Bohuth 7, and sensitive group containing Doma 1 (the most sensitive genotype), Jolan 2, Doma 4 and Bohuth 8.
In home telerehabilitation for older adults after discharge from an acute hospital or rehabilitation unit: A proof-of-concept study and costs estimation

Purpose.The purpose of this study is to investigate rehabilitation through teletreatment as an alternative to a physical home-care visit to deliver services to individuals at home following discharge from an acute hospital or rehabilitation unit. Method.Four community-living elderly people were recruited for telerehabilitation services prior being discharged from an acute-care hospital and a geriatric rehabilitation unit. Once the patient returned home, an appointment was made for the assessing therapist to take the clinical measurements (T1) in a face-to-face session. Four clinical variables were used (functional autonomy, balance, locomotor performance in walking and lower-body strength). Telerehabilitation sessions with the participants were conducted with trained personnel in the individual's home. The system used to support telerehabilitation services for this proof of concept was built around network-attached remotely-controlled pan/tilt/zoom cameras with MJPEG compression, media displays and hands-free phones. Before the patient was discharged from the physiotherapy program, the same assessing therapist visited the subject again to take the T2 measurements in a face-to-face session. The satisfaction of the health-care professional was determined for each session with the homemade questionnaire. Costs related to telerehabilitation were compared to theoretically home visits. Results.All four subjects improved on the four clinical variables. Mean costs for the telerehabilitation program, comprising 12 sessions over 4 weeks was $487. Conclusion.Telerehabilitation seems to be a practical alternative for dispensing rehabilitation services after patients are discharged from an acute hospital or rehabilitation unit.
Severe form of congenital cerebral and cerebellar atrophy: A neurodegenerative disorder of fetal onset

Infantile olivopontocerebellar atrophy (OPCA) is a rare congenital disorder likely due to an intrauterine neurodegenerative condition. Characteristic presentations are failure to thrive, cerebellar ataxia, respiratory insufficiency, and hypotonia or hypertonia. A few cases with severe manifestations (eg, the Pena‐Shokeir phenotype) presenting in the neonatal period have also been reported. We present a case of infantile OPCA with the Pena‐Shokeir II phenotype and severe atrophy of the cerebellum and cerebral hemispheres. Comparison of prenatal sonographic findings of the fetal brain at 30 weeks' menstrual age and CT findings during the neonatal period indicated prenatal onset of the neurodegenerative process, which progressed rapidly during the last trimester. © 2007 Wiley Periodicals, Inc. J Clin Ultrasound, 2007
The Benefit of Sonography in Pregnancy-associated Breast Cancer.

PURPOSE : To evaluate the sonographic, mammographic and MRI features of pregnancy-associated breast cancer with the major focus on the sonographic benefit in a diagnosis of pregnancyassociated breast cancer. MATERIALS and METHODS : From 1998 to 2002, sonography was performed on a total 7 patients (age 23 to 38 years), who were pathologically diagnosed with breast cancer during pregnancy. Six of those patients underwent mammography. Five patients underwent a breast MRI, preoperatively. The radiological findings were evaluated retrospectively. Six patients underwent surgery and 1 patient underwent a core biopsy and chemotherapy. The histological, nuclear grading and pathological staging were evaluated. RESULTS : The sonographic findings showed a mass with irregular shapes (n=6), irregular margins (n=6), a non-parallel orientation (n=5), complex echo patterns (n=5). Associated findings could be observed in 3 patients, including Cooper’s ligament thickening (n=2), edema (n=2), skin thickening (n=1) and axillary lymphadenopathy (n=3). The sonographic findings were positive and showed masses in 6 patients. All the patients had a dense breast in mammography. The mammographic findings included masses (n=4), masses with microcalcifications (n=2), masses with axillary lymphadenopathy (n=3), calcifications alone (n=1), an asymmetric density alone (n=1), extremely dense breasts with negative findings (n=2). A breast MRI showed an irregular shaped mass (n=4) with a rim-like enhancement (n=3), linear ductal enhancement without a mass (n= 1), and the time intensity cure revealed the typical pattern and level of enhancement in the carcinoma. CONCLUSION : Sonography is a valuable tool for diagnosing pregnancy-associated breast cancer. However, mammography should be performed if there is a suspicious lesion on sonography in order to confirm the pregnancy-associated breast cancer. Mammography has a lower sensitivity during pregnancy due to the physiologic changes in the breasts. However, calcifications and associated findings are helpful in confirming pregnancy-associated breast cancer. physicians J Korean Soc Ultrasound Med 2004;24:123-130
Response of Escherichia coli growth rate to osmotic shock

Significance The peptidoglycan cell wall is a universal feature of bacteria that determines their shape, their effect on the human immune system, and their susceptibility to many of our front-line antibiotics. Therefore, it is essential to understand the physiology of this structure. Here, we examine the fundamental biomechanical and biochemical processes that drive cell-wall expansion during cell growth. We demonstrate that, contrary to a long-standing hypothesis, osmotic pressure is not essential for cell-wall expansion of the model bacterium Escherichia coli and that growth of this organism is robust to changes in osmotic pressure. This may be an important adaptation for an enteric bacterium, which regularly faces drastic changes in its osmotic environment during entry and exit from the intestine. It has long been proposed that turgor pressure plays an essential role during bacterial growth by driving mechanical expansion of the cell wall. This hypothesis is based on analogy to plant cells, for which this mechanism has been established, and on experiments in which the growth rate of bacterial cultures was observed to decrease as the osmolarity of the growth medium was increased. To distinguish the effect of turgor pressure from pressure-independent effects that osmolarity might have on cell growth, we monitored the elongation of single Escherichia coli cells while rapidly changing the osmolarity of their media. By plasmolyzing cells, we found that cell-wall elastic strain did not scale with growth rate, suggesting that pressure does not drive cell-wall expansion. Furthermore, in response to hyper- and hypoosmotic shock, E. coli cells resumed their preshock growth rate and relaxed to their steady-state rate after several minutes, demonstrating that osmolarity modulates growth rate slowly, independently of pressure. Oscillatory hyperosmotic shock revealed that although plasmolysis slowed cell elongation, the cells nevertheless “stored” growth such that once turgor was reestablished the cells elongated to the length that they would have attained had they never been plasmolyzed. Finally, MreB dynamics were unaffected by osmotic shock. These results reveal the simple nature of E. coli cell-wall expansion: that the rate of expansion is determined by the rate of peptidoglycan insertion and insertion is not directly dependent on turgor pressure, but that pressure does play a basic role whereby it enables full extension of recently inserted peptidoglycan.
Gravitino Production in the Early Universe and Its Implications to Particle Cosmology

Effects of the unstable gravitino on the big‐bang nucleosynthesis (BBN) and its implications to particle cosmology are discussed. If the gravitino mass is smaller than ∼ 20 TeV, lifetime of the gravitino becomes longer than ∼ 1 sec and its decay may spoil the success of the standard BBN. In order to avoid such a problem, upper bound on the reheating temperature after the inflation is obtained, which may be as low as ∼ 105–6 GeV. For a successful baryogenesis with such low reheating temeprature, a consistent scenario based on the large cutoff supergravity (LCSUGRA) hypothesis of supersymmetry breaking, where the gravitino and sfermion become as heavy as ∼ O(1 – 10 TeV), is proposed. In the LCSUGRA, non‐thermal leptogenesis can produce large enough baryon asymmetry. We also see that, in the LCSUGRA scenario, relic density of the lightest superparticle becomes consistent with the WMAP value of the dark matter density in the parameter region required for the successful non‐thermal leptogenesis. In this case, .
Variance and derivative estimation for virtual performance in simulation analytics

Virtual performance is a class of time-dependent performance measures conditional on a particular event occurring at timet0 for a (possibly) nonstationary stochastic process; virtual waiting time of a customer arriving to a queue at time t0 is one example. Virtual statistics are estimators of the virtual performance. In this paper, we go beyond the mean to propose estimators for the variance, and for the derivative of the mean with respect to time, of virtual performance, examining both their small-sample and asymptotic properties. We also provide a modified K-fold cross validation method for tuning the parameter k for the difference-based variance estimator, and evaluate the performance of both variance and derivative estimators via controlled studies. The variance and derivative provide useful information that is not apparent in the mean of virtual performance.
HCTNav: A Path Planning Algorithm for Low-Cost Autonomous Robot Navigation in Indoor Environments

Low-cost robots are characterized by low computational resources and limited energy supply. Path planning algorithms aim to find the optimal path between two points so the robot consumes as little energy as possible. However, these algorithms were not developed considering computational limitations (i.e., processing and memory capacity). This paper presents the HCTNav path-planning algorithm (HCTLab research group"s navigation algorithm). This algorithm was designed to be run in low-cost robots for indoor navigation. The results of the comparison between HCTNav and the Dijkstra"s algorithms show that HCTNav"s memory peak is nine times lower than Dijkstra"s in maps with more than 150,000 cells.
Channel estimation for spatial modulation orthogonal frequency division multiplexing systems

A combination of spatial modulation and orthogonal frequency division multiplexing (SM-OFDM) has been recently proposed for multicarrier systems while assuming the perfect channel state information (P-CSI) available at the receiver. But, in practical scenarios, the estimation of CSI is crucial in order to detect the transmitted data coherently. In this work1, a new frame structure and pilot symbol aided channel estimation (PSA-CE) technique with a piecewise linear interpolation is proposed for the SM-OFDM systems operating in the presence of frequency selective channel. Bit error rate (BER) performance of the proposed channel estimation technique is then investigated with different channel models such as Typical Urban (TU) and Rural Urban (RU) for 4-quadrature amplitude modulation (QAM). In particular, it is shown that the performance with estimated channel came close to that with known channel within 2.3 dB in SNR for BER = 10-4 for TU channels.
Enhanced Typing and Tracking of Methicillin-Resistant Staphylococcus aureus and Methicillin-Susceptible S. aureus in Irish Hospitals using Whole-Genome Sequencing

Community-associated spa type t127/t922 methicillin-resistant Staphylococcus aureus (MRSA) prevalence increased from 1%-7% in Ireland between 2010–2015. This study tracked the spread of 89 such isolates from June 2013-June 2016. These included 78 healthcare-associated and 11 community associated-MRSA isolates from a prolonged hospital outbreak (H1) (n = 46), 16 other hospitals (n = 28), four other healthcare facilities (n = 4) and community-associated sources (n = 11). Isolates underwent antimicrobial susceptibility testing, DNA microarray profiling and whole-genome sequencing. Minimum spanning trees were generated following core-genome multilocus sequence typing and pairwise single nucleotide variation (SNV) analysis was performed. All isolates were sequence type 1 MRSA staphylococcal cassette chromosome mec type IV (ST1-MRSA-IV) and 76/89 were multidrug-resistant. Fifty isolates, including 40/46 from H1, were high-level mupirocin-resistant, carrying a conjugative 39 kb iles2-encoding plasmid. Two closely related ST1-MRSA-IV strains (I and II) and multiple sporadic strains were identified. Strain I isolates (57/89), including 43/46 H1 and all high-level mupirocin-resistant isolates, exhibited80 SNVs. Two strain I isolates from separate H1 healthcare workers differed from other H1/strain I isolates by 7–47 and 12–53 SNVs, respectively, indicating healthcare worker involvement in this outbreak. Strain II isolates (19/89), including the remaining H1 isolates, exhibited127 SNVs. For each strain, the pairwise SNVs exhibited by healthcare-associated and community-associated isolates indicated recent transmission of ST1-MRSA-IV within and between multiple hospitals, healthcare facilities and communities in Ireland. Given the interchange between healthcare-associated PLOS ONE | https://doi.org/10.1371/journal.pone. 0175542 April 11, 2017 1 / 17 a1111111111 a1111111111 a1111111111 a1111111111 a1111111111
A new strategy for multiprocessor scheduling of cyclic task graphs

A modular strategy for scheduling iterative computations is proposed. Iterative computations are represented using cyclic task graphs that are transformed into acyclic task graphs. These acyclic task graphs are subsequently scheduled using one of the many well known and high quality static scheduling strategies from the literature. Graph unfolding is not employed and the generated schedules therefore require less memory than schedules generated through graph unfolding. Further, the number of iterations does not need to be known at compile time. The paper experimentally quantifies how the task transformation affects the make span of the schedules and the effectiveness of the approach is compared to other methods including a graph unfolding strategy. A new more intuitive graph unfolding formulation is also presented.
Joint MMSE transceiver design for multiuser non-regenerative MIMO relay downlink systems

This paper considers the multiuser non-regenerative MIMO relay systems in the context of the cellular downlink, where the base station simultaneously transmits data streams to multiple mobile stations through the relay station. All the nodes are equipped with multiple antennas. A joint transceiver design method is proposed to minimize the sum mean square error (MSE) of the system under the transmitted power constraints. Moreover, two special designs which the linear signal processing is performed at either the base station or relay station are studied, respectively. The closed-form expressions of the transceiver are obtained by using the Karush-Kuhn-Tucker (KKT) conditions and realized through an iterative algorithm with the guaranteed convergence, which provides a local optimal solution. Moreover, a greedy algorithm is developed to improve the performance by selecting a subset of mobile stations which have good channel conditions in each transmission. Simulation results compare different methods in terms of the average BER and the sum rate.
Improved Performances of Acoustic Energy Harvester Fabricated Using Sol/Gel Lead Zirconate Titanate Thin Film

Energy harvesters integrable on smart sensor systems have been strongly demanded. Microelectromechanical system (MEMS) acoustic energy harvesters using the first resonance vibration of a lead zirconate titanate (PZT) thin film as a diaphragm have recently been reported. Similar acoustic energy harvesters using the third resonance of a PZT diaphragm fabricated by sol/gel PZT thin film processes exhibited improved generated power density, and it was suggested that the PZT acoustic energy harvester might be suitable for use as a possible power source for silicon integrated circuits. We present further improved power generation performances of PZT MEMS acoustic energy harvesters fabricated by improved PZT capacitor fabrication processes. The PZT acoustic energy harvester with the diaphragm diameter of 1.2 mm fabricated by a sol/gel process generated an even higher energy density of 98 µW/m2 under the sound pressure level of 100 dB (0.01 W/m2) at 16.7 kHz.
On the Possibility of Long Time Existence of Man-Made Microparticles Injected on Oblong Elliptic Orbits with Low Perigee Altitude in the Near Earth Space

Basing on the results of numerical experiments a possibility in principle of long time keeping (more than 1 month) and very long time keeping (about or more than 1 year) of man-made particles of aluminium and aluminium oxide with radii more than 1 micron and less than 0.1 micron injected on oblong elliptic orbits with low perigee altitude in the near earth space is shown. Estimates made earlier that clouds of man-made particles with long time life which are observed by space vehicle on low altitude orbits consist of particles moving in the Near Earth Space on oblong elliptic orbits have been confirmed by obtained calculated data.