Monolingual and Cross-Lingual Knowledge Transfer for Topic Classification

This article investigates the knowledge transfer from the RuQTopics dataset. This Russian topical dataset combines a large sample number (361,560 single-label, 170,930 multi-label) with extensive class coverage (76 classes). We have prepared this dataset from the "Yandex Que" raw data. By evaluating the RuQTopics - trained models on the six matching classes of the Russian MASSIVE subset, we have proved that the RuQTopics dataset is suitable for real-world conversational tasks, as the Russian-only models trained on this dataset consistently yield an accuracy around 85\% on this subset. We also have figured out that for the multilingual BERT, trained on the RuQTopics and evaluated on the same six classes of MASSIVE (for all MASSIVE languages), the language-wise accuracy closely correlates (Spearman correlation 0.773 with p-value 2.997e-11) with the approximate size of the pretraining BERT's data for the corresponding language. At the same time, the correlation of the language-wise accuracy with the linguistical distance from Russian is not statistically significant

Functional state of the blood coagulation system in postsurgery period in patients with malignant tumors of the GI tract

The present paper analyzes changes in coagulation system markers in 64 patients with malignant tumors of the GI in surgical treatment. Results obtained when using parameters of the expanded coagulogram and a new global hemostatic assessment test with the use of Thrombodynamics recorder T2 have been evaluated. Based on the findings, we have developed models for predicting postoperative venous thrombosis and compared different methods for the coagulation system examinations. The thrombodynamics test allows us to assess the state of thrombotic readiness in the postoperative period in 26.56% of patients with GI cancer upon the standard anticoagulant prevention. High levels of the thrombinemia markers and hypercoagulation at the fibrin clot growth rate have been detected after the surgery. Correlation between the plasma fibrinogen levels and the fibrin clot density has been observed. Therefore, the proposed highly sensitive global assessment test of the hemostatic system allows us to detect hypercoagulation and evaluate the efficacy of a preventive dose of low molecular weight heparin (LMWH)

Disorders of the cardiovascular system performance in the early post-castration period in patients with locally advanced cervical cancer and their correction with the low-dose xenon therapy

Aims The aim hereof is to study the cardiovascular system disorders in the early post-castration period in patients with locally advanced cervical cancer and a possibility of correction of such disorders with the low-dose xenon therapy. Materials and methods The study involved 28 female patients of reproductive age (49.8 ± 0.5 years) diagnosed with locally advanced cervical cancer. The main test group consisted of 16 patients, who received the xenon therapy in addition to the main treatment in the early post-castration period. The reference group included 12 female patients without xenon therapy. The cardiovascular system functional state was evaluated with cardiac analyzer Cardiocode at three stages: before surgical intervention, on postsurgery day 3 and upon the completion of the therapy. Results and conclusions Early manifestations of the post-ovariectomy syndrome in the postsurgery period in female patients with locally advanced cervical cancer were accompanied by a disorder in the cardiovascular bio-adaptive and metabolic regulatory mechanisms of the uncompensated distress type, an excess of the phosphocreatine concentration and a decrease in the oxygen level in the myocardium. Upon the completion of the therapy in the reference group patients, changes in the coronary vessels hemodynamics, the dominance of the anaerobic energy exchange in the myocardium, pronounced neurovegetative and psychoemotional disorders have been revealed. The use of the low-dose xenon therapy in the main test group patients has contributed to normalization of myocardial metabolism, recovery of the aerobic energy exchange, and neutralization of neurovegetative and psychoemotional manifestations of the post-ovariectomy syndrome. Thus, the diagnostics of cardiovascular disorders in the early postsurgery period as well as the correction of the disorders and abnormalities with the low-dose xenon therapy are of great importance in the prevention of cardiovascular diseases in oncogynecologic patients with the post-ovariectomy syndrome

Performance of Multiplexed XY Resistive Micromegas detectors in a high intensity beam

We present the performance of multiplexed XY resistive Micromegas detectors tested in the CERN SPS 100 GeV/c electron beam at intensities up to 3.3 × 10 5e−/(s-cm2). So far, all studies with multiplexed Micromegas have only been reported for tests with radioactive sources and cosmic rays. The use of multiplexed modules in high intensity environments was not explored due to the effect of ambiguities in the reconstruction of the hit point caused by the multiplexing feature. For the specific mapping and beam intensities analyzed in this work with a multiplexing factor of five, more than 50% level of ambiguity is introduced due to particle pile-up as well as fake clusters due to the mapping feature. Our results prove that by using the additional information of cluster size and integrated charge from the signal clusters induced on the XY strips, the ambiguities can be reduced to a level below 2%. The tested detectors are used in the CERN NA64 experiment for tracking the incoming particles bending in a magnetic field in order to reconstruct their momentum. The average hit detection efficiency of each module was found to be 96% at the highest beam intensities. By using four modules a tracking resolution of 1.1% was obtained with 85% combined tracking efficiency.ISSN:0168-9002ISSN:1872-957