Miracle-dz/UniFAR-FTUs huggingface dataset:
UAV-Assisted Cooperative & Cognitive NOMA: Deployment, Clustering, and Resource Allocation

Cooperative and cognitive non-orthogonal multiple access (CCR-NOMA) has been recognized as a promising technique to overcome spectrum scarcity and massive connectivity issues envisioned in next-generation wireless networks. This paper investigates the deployment of an unmanned aerial vehicle (UAV) as a relay that fairly serves many secondary users in a hot-spot region. The UAV deployment algorithm must jointly account for user clustering, channel assignment, and resource allocation sub-problems. We propose a solution methodology that obtains user clustering and channel assignment based on the optimal resource allocations for a given UAV location. This paper is the first to jointly derive closed-form optimal power and time allocations for generic cluster sizes of CCR-NOMA networks. Derivations consider many practical limitations, such as hardware impairments, imperfect channel estimates, and interference temperature constraints. Compared to numerical benchmarks, proposed solutions reach optimal max-min fair data rate by consuming and spending much less transmission power and computational time. The proposed clustering uses the optimal data rates and channel assignment approaches based on a linear bottleneck assignment (LBA) algorithm. Numerical results show that the LBA achieves 100% accuracy in more than five orders of magnitude less time than the optimal integer linear programming benchmark.
Semantic Graph Based Place Recognition for 3D Point Clouds

Due to the difficulty in generating the effective descriptors which are robust to occlusion and viewpoint changes, place recognition for 3D point cloud remains an open issue. Unlike most of the existing methods that focus on extracting local, global, and statistical features of raw point clouds, our method aims at the semantic level that can be superior in terms of robustness to environmental changes. Inspired by the perspective of humans, who recognize scenes through identifying semantic objects and capturing their relations, this paper presents a novel semantic graph based approach for place recognition. First, we propose a novel semantic graph representation for the point cloud scenes by reserving the semantic and topological information of the raw point cloud. Thus, place recognition is modeled as a graph matching problem. Then we design a fast and effective graph similarity network to compute the similarity. Exhaustive evaluations on the KITTI dataset show that our approach is robust to the occlusion as well as viewpoint changes and outperforms the state-of-the-art methods with a large margin. Our code is available at: https://github.com/kxhit/SG_PR.
A GPU-accelerated image reduction pipeline

We developed a high-speed image reduction pipeline using Graphics Processing Units (GPUs) as hardware accelerators. Astronomers desire to detect the emission measure counterpart of gravitational-wave sources as soon as possible and to share in the systematic follow-up observation. Therefore, high-speed image processing is important. We developed a new image-reduction pipeline for our robotic telescope system, which uses a GPU via the Python package CuPy for high-speed image processing. As a result, the new pipeline has increased in processing speed by more than 40 times compared with the current one, while maintaining the same functions.
Microstructure And Resistivity Of Cu/Ni/Cu/Ni (T=30 S 150 S) Thin Film Produced By Electroplating

The Multilayer Cu/ Ni/Cu/Ni has been made by electroplating method. In this study, the Ni2 layer was made with variations in deposition time. The purpose of this study was to study microstructural studies with SEM-EDS test, X-Ray Diffraction, and multilayer resistivity values. The deposition process is carried out using two types of electrolyte solutions. In deposition Ni, the solution used is a mixture of H3BO3 7.5 g, NiSO4 175, NiCl2 30 g. The Cu solution used was a mixture of CuSO4 62.5 g and 13 mL H2SO4. Each type of mixture is dissolved in 250 mL H2O. The electroplating process is carried out at a voltage of 1.5 volts, the electrode distance is 4 cm. The solution temperature was 30° C for Cu deposition, 60° C for Ni deposition. Based on the results of the study it is known that the increased deposition time causes the particle size to be larger. Microstructure analysis shows that grain size, intensity, and interplanar distance influence the resistivity produced. Keyword: Resistance Temperature Detector, Electroplating, Multilayer, Deposition Time, Microstucture ——————————  ——————————
Tavşanlarda N-Asetil Sisteinin Total Antioksidan Kapasite, Total Oksidan Kapasite, Nitrik Oksit Düzeyleri ve Gamaglutamil Transpeptidaz Aktivitesi Üzerine Akut Etkileri

N-acetylcysteine (NAC), acetylated derivative of cysteine amino acid, is widely used mucolytic agent. In this study, it was aimed to investigate the acute effects of NAC on total antioxidant capacity (TAC), total oxidant capacity (TOC), nitric oxide (NO), albumin, globulin, glucose levels and gammaglutamyl transpeptidase (GGT) activity. Eleven New Zealand rabbits were used in the study. Blood samples from the rabbits were taken before the start of the experiment to determine control values. NAC (100 mg/kg) was injected to rabbits as intramuscularly. Blood samples were collected from vena auricularis of rabbits at 3rd, 6th and 9th hours. While TAC levels were found high (P<0.05) at 6 and 9 hours, TOC levels were found low (P<0.05) at 3rd, 6th and 9th hours after NAC injection compared to the values before the experiment. NO levels were found low (P<0.001) at 6th and 9th hours, GGT activities were found low (P<0.05) at 3rd and 6th hours, total protein and albumin levels were found low (P<0.05) at 3rd hour after NAC injection compared to values before the experiment. As a result, after intramuscular injection of NAC, plasma TAC levels of rabbits increased, while TOC and NO levels decreased. According to the results, it can be concluded that NAC may show antioxidant effect in a short time. Therefore, NAC could be a good alternative when the antioxidant system needs to be strengthened due to its beneficial properties.
ALANET: Adaptive Latent Attention Network for Joint Video Deblurring and Interpolation

Existing works address the problem of generating high frame-rate sharp videos by separately learning the frame deblurring and frame interpolation modules. Most of these approaches have a strong prior assumption that all the input frames are blurry whereas in a real-world setting, the quality of frames varies. Moreover, such approaches are trained to perform either of the two tasks - deblurring or interpolation - in isolation, while many practical situations call for both. Different from these works, we address a more realistic problem of high frame-rate sharp video synthesis with no prior assumption that input is always blurry. We introduce a novel architecture, Adaptive Latent Attention Network (ALANET), which synthesizes sharp high frame-rate videos with no prior knowledge of input frames being blurry or not, thereby performing the task of both deblurring and interpolation. We hypothesize that information from the latent representation of the consecutive frames can be utilized to generate optimized representations for both frame deblurring and frame interpolation. Specifically, we employ combination of self-attention and cross-attention module between consecutive frames in the latent space to generate optimized representation for each frame. The optimized representation learnt using these attention modules help the model to generate and interpolate sharp frames. Extensive experiments on standard datasets demonstrate that our method performs favorably against various state-of-the-art approaches, even though we tackle a much more difficult problem. The project page is available at https://agupt013.github. io/ALANET.html.
Prior Choice and DSGE Model Comparisons

It is difficult to form beliefs about the parameters that govern the law of motion of the exogenous processes in DSGE models. We provide a simple way of translating beliefs for the moments of the endogenous variable into a prior for these parameters. We use our approach to investigate the importance of nominal rigidities and show that it affects our assessment of the relative importance of different frictions. JEL CLASSIFICATION: C32
Evaluación de la producción de ácidos orgánicos por Streptomyces spp. y solubilización de tres fuentes de fósforo por la cepa T3A Evaluation of organic acid production by Streptomyces spp. and solubilization of three phosphorus sources by strain T3A

Fifteen isolates of Eastern Cordillera of the Colombian Andes were identified by morphological characteristics and 16S rDNA gene sequence. The BLAST analysis of 15 sequences shows that isolates belong to Streptomyes. Also we detected the organic acids in the solubilization process mainly oxalic acid, citric acid and gluconic acid. Streptomyces sp. (T3A) was selected in preliminary qualitative and quantitative assays by the high phosphorus solubilizing activity; in this work we evaluate this strain with different forms of inorganic phosphate. The results evidenced the capacity of this actinobacteria %
Growth and Metamorphosis of Bufo melanostictus Tadpoles: Effects of Kinship and Density

Growth and metamorphosis of the toad Bufo melanostictus was studied by rearing tadpoles of different sibships in isolation or in groups of siblings and nonsiblings (mixed rearing) under crowded and uncrowded conditions. All tadpoles survived and metamorphosed successfully. Growth rate and dura- tion of metamorphosis of tadpoles reared in isolation were similar among the six sibships regardless of genetic differences. Tadpoles reared in sibling groups metamorphosed in 25 days, whereas those reared with nonsiblings metamorphosed between days 30-35. The largest mean body mass at metamorphosis was for sib groups reared in lower densities. When reared with siblings, growth was uniform, resulting in the production of bigger toadlets and a narrow spectrum of size classes. Mixed rearing retarded growth rates, increased larval duration, and produced smaller individuals at metamorphosis, resulting in extreme vari- ability in size classes, especially under crowded conditions. Our study shows that both kinship and density affect larval duration and size at metamorphosis in this species.
Calibration Chamber Size Effects on Penetration Resistance in Sand

Calibration chamber tests provide an effective way to study cone penetration resistance in sands under controlled conditions. Calibration chamber tests are performed in large soil samples with known densities, consolidated to desired stresses, and subjected to known boundary conditions. Results from calibration chamber tests can be used to establish the relationship between cone resistance, soil density, and stress state. However, the penetration resistance measured in a calibration chamber differs from that measured in the free field because of chamber size and boundary condition effects. There has been considerable uncertainty about these effects, precluding use of the results of calibration chamber research with greater confidence. In this paper, a penetration resistance theory recently developed is used to quantify chamber size effect, to investigate the factors it depends on, and to show how to correct calibration chamber test penetration resistance values to free-field conditions. The theoretical results are compared with available experimental results.
Intact Contextual Cueing for Search in Realistic Scenes with Simulated Central or Peripheral Vision Loss

Purpose Search in repeatedly presented visual search displays can benefit from implicit learning of the display items' spatial configuration. This effect has been named contextual cueing. Previously, contextual cueing was found to be reduced in observers with foveal or peripheral vision loss. Whereas this previous work used symbolic (T among L-shape) search displays with arbitrary configurations, here we investigated search in realistic scenes. Search in meaningful realistic scenes may benefit much more from explicit memory of the target location. We hypothesized that this explicit recall of the target location reduces visuospatial working memory demands on search considerably, thereby enabling efficient search guidance by learnt contextual cues in observers with vision loss. Methods Two experiments with gaze-contingent scotoma simulation (Experiment 1: central scotoma, Experiment 2: peripheral scotoma) were carried out with normal-sighted observers (total n = 39/40). Observers had to find a cup in pseudorealistic indoor scenes and discriminate the direction of the cup's handle. Results With both central and peripheral scotoma simulation, contextual cueing was observed in repeatedly presented configurations. Conclusions The data show that patients suffering from central or peripheral vision loss may benefit more from memory-guided visual search than would be expected from scotoma simulation and patient studies using abstract symbolic search displays. Translational Relevance In the assessment of visual search in patients with vision loss, semantically meaningless abstract search displays may gain insights into deficient search functions, but more realistic meaningful search scenes are needed to assess whether search deficits can be compensated.
Once-daily vs. twice-daily dosing of enoxaparin for the management of venous thromboembolism: A systematic review and meta-analysis

The present study aimed to determine whether there is any difference in the efficacy and safety of once-daily vs. twice-daily enoxaparin when used for the initial treatment of venous thromboembolism (VTE). The PubMed, Embase, Cochrane Central Register of Controlled Trials, Science Direct and Google Scholar databases were searched for studies comparing once-daily and twice-daily enoxaparin for the initial treatment of VTE added from inception up to 1st October 2019. Studies utilizing any other low-molecular-weight heparin and using enoxaparin for VTE prophylaxis were excluded. A total of 6 studies were included in the systematic review and 5 in the meta-analysis. Only one study was a randomized controlled trial (RCT). Pooled analysis of 460 patients receiving once-daily enoxaparin and 464 patients receiving twice-daily enoxaparin indicated no significant difference between the two dosing regimens regarding VTE recurrence [odds ratio (OR)=1.48, 95%CI: 0.75-2.89, P=0.26; I2=0%]. No significant difference in major hemorrhagic complications was noted (OR=1.21, 95%CI: 0.52-2.81, P=0.66; I2=0%). Sub-group analysis based on study type and use of enoxaparin for bridging therapy did not change the overall results. In cancer patients, no statistically significant difference in the recurrence of VTE was obtained between once-daily and twice-daily enoxaparin, but the confidence intervals were wide with a tendency to favor twice-daily dosing (OR=2.28, 95%CI: 0.91-5.75, P=0.08; I2=0%). The overall quality of the studies was determined to be average. To conclude, while the present results suggested no significant difference in efficacy and safety of once-daily vs. twice-daily enoxaparin when used for the initial treatment of VTE, the quality of the evidence may not have been sufficiently high to support the conclusions with confidence. Further high-quality and adequately powered RCTs are required to corroborate the present results.
How Much Hypertension is Attributed to Overweight, Obesity, and Hyperglycemia Using Adjusted Population Attributable Risk in Adults?

Background High blood pressure (HBP) is a proven risk factor for cardiovascular diseases. So, determining the extent of the contribution of the factors associated with HBP seems to be necessary. Accordingly, this study aimed to investigate how much the prevalence of HBP attributed to obesity and high blood glucose (HBG). Methods Data were collected from 7612 participants extracted from a screening program in 2018, in Iran, which was conducted on the subjects with the age of 30 years old and older to investigate the prevalence of HBP and their associated risk factors. To collect data, we used a standard checklist in terms of the WHO STEPS manual, and a stratified multistage sampling method was also applied. The adjusted population attributable risk of overweight, obesity, and HBG for HBP was calculated by the logistic regression model using the aflogit module. Results Among the studied people, 7.4% of male and 10.8% of female subjects were hypertensive. The adjusted analysis showed that, in men, 27% and 41% and, among women, 19% and 37% of HBP prevalence rates were attributable to obesity (BMI ≥ 30) and fast blood sugar (FBS) (≥126), respectively. In people with both obesity and HBG, 59% of the prevalence rate of HBP in men and 46% of the prevalence in women were due to the abovementioned risk factors altogether. The results show that, if obesity and HBG were eliminated, the prevalence of HBP could be theoretically decreased from 7.4% to 5.4% and 4.3% in male subjects and from 10.8% to 8.7% and 6.8% in female subjects, respectively. Conclusions Our findings indicate that how much the prevalence of HBP attributes to obesity and HBG in middle-age and older population. It seems that the prevention programs should be administered in the general population, and excess body weight prevention programs should also be implemented in childhood.
Hematopoietic Stem Cells and Mesenchymal Stromal Cells in Acute Radiation Syndrome

With the extensive utilization of radioactive materials for medical, industrial, agricultural, military, and research purposes, medical researchers are trying to identify new methods to treat acute radiation syndrome (ARS). Radiation may cause injury to different tissues and organs, but no single drug has been proven to be effective in all circumstances. Radioprotective agents are always effective if given before irradiation, but many nuclear accidents are unpredictable. Medical countermeasures that can be beneficial to different organ and tissue injuries caused by radiation are urgently needed. Cellular therapy, especially stem cell therapy, has been a promising approach in ARS. Hematopoietic stem cells (HSCs) and mesenchymal stromal cells (MSCs) are the two main kinds of stem cells which show good efficacy in ARS and have attracted great attention from researchers. There are also some limitations that need to be investigated in future studies. In recent years, there are also some novel methods of stem cells that could possibly be applied on ARS, like “drug” stem cell banks obtained from clinical grade human induced pluripotent stem cells (hiPSCs), MSC-derived products, and infusion of HSCs without preconditioning treatment, which make us confident in the future treatment of ARS. This review focuses on major scientific and clinical advances of hematopoietic stem cells and mesenchymal stromal cells on ARS.
Multi-Marker Longitudinal Algorithms Incorporating HE4 and CA125 in Ovarian Cancer Screening of Postmenopausal Women

Longitudinal CA125 algorithms are the current basis of ovarian cancer screening. We report on longitudinal algorithms incorporating multiple markers. In the multimodal arm of United Kingdom Collaborative Trial of Ovarian Cancer Screening (UKCTOCS), 50,640 postmenopausal women underwent annual screening using a serum CA125 longitudinal algorithm. Women (cases) with invasive tubo-ovarian cancer (WHO 2014) following outcome review with stored annual serum samples donated in the 5 years preceding diagnosis were matched 1:1 to controls (no invasive tubo-ovarian cancer) in terms of the number of annual samples and age at randomisation. Blinded samples were assayed for serum human epididymis protein 4 (HE4), CA72-4 and anti-TP53 autoantibodies. Multimarker method of mean trends (MMT) longitudinal algorithms were developed using the assay results and trial CA125 values on the training set and evaluated in the blinded validation set. The study set comprised of 1363 (2–5 per woman) serial samples from 179 cases and 181 controls. In the validation set, area under the curve (AUC) and sensitivity of longitudinal CA125-MMT algorithm were 0.911 (0.871–0.952) and 90.5% (82.5–98.6%). None of the longitudinal multi-marker algorithms (CA125-HE4, CA125-HE4-CA72-4, CA125-HE4-CA72-4-anti-TP53) performed better or improved on lead-time. Our population study suggests that longitudinal HE4, CA72-4, anti-TP53 autoantibodies adds little value to longitudinal serum CA125 as a first-line test in ovarian cancer screening of postmenopausal women.
Major Bleeding Predictors in Patients with Left Atrial Appendage Closure: The Iberian Registry II

Introduction and objective: Major bleeding events in patients undergoing left atrial appendage closure (LAAC) range from 2.2 to 10.3 per 100 patient-years in different series. This study aimed to clarify the bleeding predictive factors that could influence these differences. Methods: LAAC was performed in 598 patients from the Iberian Registry II (1093 patient-years; median, 75.4 years). We conducted a multivariate analysis to identify predictive risk factors for major bleeding events. The occurrence of thromboembolic and bleeding events was compared to rates expected from CHA2DS2-VASc (congestive heart failure, hypertension, age, diabetes, stroke history, vascular disease, sex) and HAS-BLED (hypertension, abnormal renal and liver function, stroke, bleeding, labile INR, elderly, drugs or alcohol) scores. Results: Cox regression analysis revealed that age ≥75 years (HR: 2.5; 95% CI: 1.3 to 4.8; p = 0.004) and a history of gastrointestinal bleeding (GIB) (HR: 2.1; 95% CI: 1.1 to 3.9; p = 0.020) were two factors independently associated with major bleeding during follow-up. Patients aged <75 or ≥75 years had median CHA2DS2-VASc scores of 4 (IQR: 2) and 5 (IQR: 2), respectively (p < 0.001) and HAS-BLED scores were 3 (IQR: 1) and 3 (IQR: 1) for each group (p = 0.007). Events presented as follow-up adjusted rates according to age groups were stroke (1.2% vs. 2.9%; HR: 2.4, p = 0.12) and major bleeding (3.7 vs. 9.0 per 100 patient-years; HR: 2.4, p = 0.002). Expected major bleedings according to HAS-BLED scores were 6.2% vs. 6.6%, respectively. In patients with GIB history, major bleeding events were 6.1% patient-years (HAS-BLED score was 3.8 ± 1.1) compared to 2.7% patients-year in patients with no previous GIB history (HAS-BLED score was 3.4 ± 1.2; p = 0.029). Conclusions: In this high-risk population, GIB history and age ≥75 years are the main predictors of major bleeding events after LAAC, especially during the first year. Age seems to have a greater influence on major bleeding events than on thromboembolic risk in these patients.