bluuebunny/crossref_metadata_2025_split huggingface dataset:
Investigating the prediction ability of the ionospheric continuity equation during the geomagnetic storm on May 8, 2016
Authors: Mahbuby Hany , Amerian Yazdan 
Published: January 2025

Abstract
Ionospheric electron density (IED) and vertical total electron content (VTEC) are two of the most important characteristics that interpret the ionosphere. Today, satellite geodesy plays an important role in providing these data. Apart from monitoring the ionosphere by means of Global Navigation Satellite System observations, predictions of these ionospheric characteristics have also been taken into consideration. The majority of prediction methods in the ionosphere are focused on VTEC prediction. The continuity equation in the ionosphere is a spatiotemporal partial differential equation that can be used to predict both IED and VTEC. In this study, we address this issue during May 8, 2016, which was a day of high geomagnetic activity. For this purpose, first, high-accuracy IED grids with a spatial resolution of 0.5° × 0.5° in longitude and latitude, 50 km in altitude, and a temporal resolution of 10 min are prepared. These IED grids are called analysis grids and are derived by assimilation of GPS-derived VTECs into the background IED grids provided by international reference ionosphere. Second, the analysis grids can be utilized as the initial and boundary values in the continuity equation to predict IED for the next 3 h with a step of 10 min. The analysis grids are constructed over the Iran region, and the performance of the continuity equation in the ionosphere prediction is investigated during the strongest geomagnetic storm of 2016. Finally, the accuracy of the predictions has been evaluated in two ways. First, analysis grids with high accuracy are available for each epoch in which the prediction is presented. On average, the root mean square (RMS) of the differences between the predicted IEDs and the analysis IEDs is 1.66 × 1010 el/m3 for 1-h predictions and 5.33 × 1010 el/m3 for 3-h predictions. Second, by numerical integration of the predicted grids in the vertical direction, VTECs are estimated and compared with VTEC values of test data that were already known. On average, the RMS of their difference was 1.29 total electron content unit (TECU) for 1-h predictions and 2.57 TECU for 3-h predictions. An acceptable accuracy for both IED and VTEC prediction by a continuity equation has been obtained up to 3 h on the most active ionospheric day.
Penalty kicks: an adversarial risk analysis (ARA) perspective
Authors: Luxenberg Samuel , Soyer Refik , Bose Sudip 
Published: January 2025

Abstract
Penalty kicks are critical to game outcomes in soccer. The typical quantitative strategy is as follows. First, model such an interaction as a two or three strategy game between the kicker and the goalkeeper. Second, find the mixed-strategy Nash equilibrium (MSNE) to determine the “optimal” probabilities of each player choosing to kick or dive to either side or to the center of the goal. While this is the usual path to a solution, it is also fraught with many assumptions due to the nature of penalty kick data as well as due to implicit assumptions within the game theory model. In this paper, we introduce an alternative set of strategies, known as adversarial risk analysis (ARA), to determine optimal decisions for the penalty kick game. ARA, which is grounded in the principles of Bayesian decision analysis, allows the decision maker to avoid many of the assumptions and limitations encountered when using the game theory approach. By examining 2018–2019 Major League Soccer (MLS) penalty kicks on an individual basis, we show that our most accurate ARA model predicts the correct goalkeeper decision 65 % of the time, while the game-theoretic model predicts correctly 51 % of the time, a statistically significant difference.
All-optical analog differential operation and information processing empowered by meta-devices
Authors: Zhou Chen , Wang Yongtian , Huang Lingling 
Published: January 2025

Abstract
The burgeoning demand for high-performance computing, robust data processing, and rapid growth of big data necessitates the emergence of novel optical devices to efficiently execute demanding computational processes. The field of meta-devices, such as metamaterial or metasurface, has experienced unprecedented growth over the past two decades. By manipulating the amplitude, phase, polarization, and dispersion of light wavefronts in spatial, spectral, and temporal domains, viable solutions for the implementation of all-optical analog computation and information processing have been provided. In this review, we summarize the latest developments and emerging trends of computational meta-devices as innovative platforms for spatial optical analog differentiators and information processing. Based on the general concepts of spatial Fourier transform and Green’s function, we analyze the physical mechanisms of meta-devices in the application of amplitude differentiation, phase differentiation, and temporal differentiation and summarize their applications in image edge detection, image edge enhancement, and beam shaping. Finally, we explore the current challenges and potential solutions in optical analog differentiators and provide perspectives on future research directions and possible developments.
Dynamics of dual-orbit rotations of nanoparticles induced by spin–orbit coupling
Authors: Zhang Yu , Lin Qian , Zhuang Zikuan , Lin Fei , Hong Ling , Che Zhen , Zhuo Linqing , Li Yongyao , Zhang Li , Zhao Dongxu 
Published: January 2025

Abstract
Spin–orbit coupling (SOC) in tightly focused optical fields offers a powerful mechanism for manipulating the complex motion of particles. However, to date, such a mechanism has only been applied to the single-orbit motion for particles, while multi-orbital dynamics have not yet been experimentally demonstrated. Here, the theoretical and experimental realization of dual-orbit rotational dynamics of nanoparticles in a tightly focused circularly polarized Laguerre-Gaussian beam is reported. Analyses reveal that the dual-orbit rotation of nanoparticles originates from SOC in a tightly focused vortex beam, with the motion velocity and direction determined by the topological charge of the beam. Experimentally, the dual-orbit rotation of polystyrene nanoparticles was observed for the first time using an inverted optical tweezer. In addition, the rotation velocity showed a clear linear dependence on the topological charge of the incident beam. This work reveals the pivotal role of SOC in enabling precise dual-orbit control at the nanoscale, paving the way for applications in optical sorting, grinding and delivery of microparticles.
THE IMPACT OF THE RUSSIAN-UKRAINIAN WAR ON THE FOOD INFLATION RATE PERSISTENCE IN UKRAINE: A FRACTIONAL INTEGRATION MODEL
Authors: BENKHELOUF Rachid , SAHED Abdelkader 
Published: January 2025

This study seeks to test for food inflation persistence in Ukraine using univariate fractional integration techniques. The GPH (Geweke-Porter-Hudak) test and the local Whittle estimator are both methods used in the analysis of time series data, particularly in the context of long memory processes. In addition to measuring the persistence of the food inflation rate using the ARFIMA model, the empirical results suggest evidence of the persistence of low food inflation rate in Ukraine, albeit with the same trend, before and during the Russian-Ukrainian war. Also, the food inflation rate has long-term memory properties, regardless of the sample used. The results show that memory parameters for all cases (Full, Pre-war, and Dur-war) are within the stationary range (0 < d < 0.5) and with almost equal. Nevertheless, the estimates of d suggest that the food inflation rate series exhibit a long memory, that the effect of shocks will eventually disappear in the short run in all cases (Full, Pre-war, and Dur-war). So there is no strong impact of the Russian-Ukrainian war on the food inflation rate persistence in Ukraine. This explains that the Ukrainian government's monetary policy strongly absorbs the shocks and effectively mitigates the impacts of the Russian-Ukrainian war. The ability to also exploit fractional integration in a univariate setup when modeling food inflation is a major contribution of this study, and ignoring the same may lead to wrong conclusions.
Studying the Materialization of Power in the Body
Authors: Aschenbrenner Lina 
Published: January 2025

The body plays a crucial role in a critical study of religion that is interested in the interrelation of religion and social and cultural power dynamics, yet the “body” often remains a floating signifier. This paper seeks to overcome this default mode of critical social and cultural studies by placing the focus on the material body. Through an examination of the aesthetics of the neo-spiritual Israeli movement practice known as Gaga, I demonstrate how power materializes in bodies during practice; how the bodily and material power dimensions, both implicit and non-linguistic, can by critically addressed; and how neo-spiritualities as part of a contemporary religious landscape evolve around the body as a medium of power dynamics. I exemplify my approach by examining two aesthetic processes in the context of Gaga: (1) the connection between the teacher of movement instruction and the Gaga class participant and (2) Gaga’s body techniques that train sensory attention.
Divergencia en los determinantes de la composición de comunidades arbóreas entre bosques de tierras bajas y tierras altas del noroeste de los Andes tropicales, Colombia
Authors: Idárraga Álvaro , Duque-Montoya Alvaro J. , Feeley Kenneth 
Published: January 2025

Identificar los determinantes de la composición de especies arbóreas entre tipos de bosques tropicales altitudinalmente contrastantes incrementarán nuestro conocimiento de los principales factores y procesos que controlan los patrones de diversidad y distribución de las especies. El área de estudio se localiza en la región noroeste de Colombia, principalmente en el departamento de Antioquia. Se empleó el análisis de redundancia (RDA) y un modelo semi-logarítmico linealizado para analizar la influencia del clima, fertilidad del suelo, y procesos espaciales, tales como la limitación en dispersión, sobre la composición de la comunidad arbórea. Se encontraron tres tipos de bosques: uno en tierras altas y dos en tierras bajas. En las tierras bajas, ambos modelos, el RDA y el modelo semi-logarítmico linealizado, identificaron las concentraciones de calcio como la variable que mejor explica la composición de especies (R2 adj = 0,24; p= 0,001 y RMantel = 0,68; p = 0,006, respectivamente). En las tierras altas, el RDA solo identificó la longitud como una variable explicativa significativa (R2 adj = 0,24; p = 0,001), determinada principalmente por la ubicación biogeográfica de los bosques en la cordillera Occidental o Central de los Andes. En estos bosques neotropicales, los factores que determinan la composición de especies de árboles entre tierras bajas y altas varió en magnitud y naturaleza. En general, nuestros resultados no apoyan la idea que existe una mayor especialización de hábitat en tierras altas que en tierras bajas debido a mayor variación geomorfológica y edáfica. Los ecosistemas tropicales andinos y en particular los bosques de tierras altas, han recibido menos atención que sus contrapartes de tierras bajas; nuestros hallazgos ayudan a ampliar el conocimiento actual de los factores y procesos que determinan la composición de las comunidades de los bosques montanos tropicales.
Method of the corrected distance for the valuation of real estate: a theoretical proposal in development
Authors: Chacón Mateos Manuel 
Published: January 2025

This article presents a novel valuation model by market comparison that requires a minimum application of criteria by the appraiser, thus seeking the highest degree of objectivity possible. The premise that supports the model is that the price differences observed between comparable assets of the same market must be proportional to the dissimilarities (distances) between those same assets, but it shows that not every distance implies a price gap, so a corrected distance is used. As a validation, the results of applying the method to a fictitious case, as well as to two real data sets from the commune of Providencia, in the city of Santiago, Chile, are evaluated. The solution of the model requires the use of non-linear programming, and the examples show that the results are very similar to those obtained by applying Goal Programming, which is another optimization method applicable to the valuation of real estate.
Hemophagocytic lymphohistiocytosis: literature review and clinical case
Authors: Manaenkov D. A. , Galitsyna A. B. , Falaleeva N. A. , Shuvaev V. A. , Vovchenko A. A. , Ivanov S. A. 
Published: January 2025

Hemophagocytic lymphohistiocytosis is a severe hyperinflammatory syndrome induced by aberrantly activated macrophages and cytotoxic.T cells, the cause of which is most often infection. The article presents a clinical case of hemophagocytic lymphohistiocytosis in a 34-year-old patient with a history of follicular lymphoma, who was treated at the A.F. Tsyba Medical Radiological Research Center. Six courses of R-CHOP were performed for follicular lymphoma with a complete response and further supportive therapy with rituximab. A month after the end of therapy, the patient complained of pain in his right side. According to morpho-immunohistochemical examination, the diagnosis of B-lymphoblastic lymphoma was established. Treatment according to the ALL-2016 protocol at the stage of consolidation III was complicated by a long period of three-stage cytopenia with the addition of sepsis. According to the results of an additional examination and assessment according to risk scales, the diagnosis of hemophagocytic lymphohistiocytosis was confirmed. After a few days of therapy with ruxolitinib, the general somatic status of the patient improved, blood parameters were restored and hematopoiesis was normalized according to myelogram data.A generalized infectious process can be assumed as the cause of the development of hemophagocytic lymphohistiocytosis in this patient.
Transcutaneous contrast-enhanced sonography for diagnosis of sentinel lymph nodes in early breast cancer
Authors: Khakimova G. G. , Reshetov I. V. , Zikiryakhodzhaev A. D. , Starkova M. V. , Khakimova Sh. G. , Timoshkin V. O. 
Published: January 2025

Disease stage and especially condition of the sentinel lymph node (SLN) assessed in patients with breast cancer prior to treatment are among the most important prognostic factors. SLN is the first lymph node in the regional lymph node system receiving lymph outflow from the primary tumor. SLN biopsy with blue dye gradually replaced traditional axillary lymph node dissection as the standard of treatment of early breast cancer. In the recent years, technique of contrast-enhanced sonography with microbubble contrast agents for examination of the lymph system has been studied both in animal and human trials.Aim of the review is to investigate the effectiveness of transcutaneous contrast-enhanced sonography of the SLN for biopsy and for diagnosis of metastatic SLNs using methylene blue as the standard in patients with early breast cancer.
The prognostic value of the tumor metabolic volume in predicting the response to therapy in patients with diffuse large B-cell lymphoma
Authors: Vovchenko A. A. , Galitsyna A. B. , Falaleevа N. A. , Khodzhibekova M. M. , Shuvaev V. A. , Manaenkov D. A. , Ivanov S. A. 
Published: January 2025

Background. Metabolic tumor volume (MTV) is an insufficiently studied parameter of positron emission tomography, combined with computer tomography (PET/CT), which has been gaining increasing interest in modern oncology in recent years. It is important to use MTV as a prognostic marker in diffuse large B-cell lymphoma (DLBCL).Aim. To analyze the results of therapy in patients with DLBCL and to identify their relationship with MTV, determined by PET/CT data before the start of treatment, after 2 and 6 courses of therapy.Materials and methods. The prospective study included 80 patients with a morphologically verified diagnosis of DLBCL who were treated at the A.F. Tsyba Medical Radiological Research Center from 2021 to 2024. All patients underwent therapy using R-CHOP regimens (66.25 %) and R-CHOP-like regimens (33.75 %). Each of the patients underwent 3 PET/CT studies with MTV registration – at the staging stage, after 2 and after 6 treatment courses. The median follow-up was 19.5 (4.97–45.53) months. The survival rate was calculated using the Kaplan–Mayer technique, the MTV threshold values were calculated using ROC analysis taking into account the Yuden index.Results. On the initial PET/CT, the threshold value of MTV was 37.12 cm3 (p = 0.006). In patients with a value above the threshold, failures of classical first-line therapy were statistically significantly more common. The threshold value of MTV in PET/CT after 2 courses of treatment was 19.15 cm3 (p = 0.032), in PET/CT after 6 courses – 8.73 cm3 (p = 0.028). In patients with an MTV value above the threshold, according to the results of PET/CT performed after the 2nd and 6th courses, cases of disease progression were also statistically significantly more frequent.Conclusion. MTV is a new prognostic factor in modern oncological practice and should be evaluated in all patients with DLBCL and taken into account when making decisions regarding therapy tactics.
Accompanying immunotherapy and quality of life in patients with locally advanced non-small cell lung cancer who received simultaneous chemoradiotherapy
Authors: Glukhareva А. Е. , Afonin G. V. , Grivtsova L. Yu. , Ivanov S. A. , Kaprin A. D. 
Published: January 2025

Background. Lung cancer continues to be in the leading positions in mortality among all malignant neoplasms; 85 % of all cases are nonsmall cell lung cancer (NSCLC), and in 40 % of patients the process is diagnosed at a common unresectable stage. Chemoradiotherapy is the standard of treatment for this category of patients, which allows to improve the results of local control and overall survival. In Russia, chemoradiotherapy accounts for about 4 % of all treatment methods. Perhaps this is due to high toxicity of this method and, as a result, a deterioration in quality of life of patients.Aim. To assess the quality of life of patients with locally advanced NSCLC during simultaneous chemoradiotherapy in combination with and without accompanying immunotherapy.Materials and methods. The study included 60 patients with locally advanced NSCLC. The study group (n = 30) received a radical course of simultaneous chemoradiotherapy with the use of accompanying immunotherapy with azoximer bromide. Patients in the control group (n = 30) underwent a course of simultaneous chemoradiotherapy in the standard mode. We evaluated the criteria of quality of life in patients using questionnaires EORTC QLQ-LC13, EQ-5D-5L, EORTC QLQ-C30.Results. In the study group, an improvement in most of the parameters of quality of life and a decrease in the severity of symptoms were demonstrated compared with the control group.Conclusion. The study demonstrated a tendency to reduce hematological toxicity and improve the quality of life of patients with NSCLC. This allows us to consider the possibility of using accompanying immunotherapy in combination with chemoradiotherapy as an additional therapeutic option that improves the quality of life of patients and the tolerability of the treatment.
Epoetin alpha in multiple myeloma: literature review and our own experience
Authors: Soloveva M. V. , Solovev M. V. , Startsev A. A. , Irugova E. Z. , Arutiunian N. K. , Kraizman A. A. , Abakumova A. V. , Mendeleeva L. P. 
Published: January 2025

Background. Anemia is the main symptom of multiple myeloma (MM) both at the time of disease onset and during tumor progression. Previously, the main method of anemia treatment was blood transfusion therapy. Currently, blood transfusions are supplemented by erythropoietin (EPO) administration. Safety and effectiveness of the drug have been proven in multiple trials including trials involving oncohematological patients.Aim. To present the results of using epoetin alpha (Eralfon) in patients with MM complicated by dialysis-dependent myeloma cast nephropathy in real clinical practice; to analyze the literature data on the use of EPO for the treatment of anemia in MM patients.Materials and methods. A retrospective analysis of a series of clinical observations was carried out: 4 patients with newly diagnosed MM at the ages between 52 and 60 years who underwent treatment at the Department of Hematology and Chemotherapy of Paraproteinemic Hemablastoses with a Bone Marrow and Hematopoietic Stem Cell Transplantation Block. All patients were diagnosed with myeloma cast nephropathy with significantly decreased glomerular filtration rate of 7–15 mL/min requiring renal replacement therapy. At the time of disease diagnosis, median hemoglobin level was 75 g/L, median creatinine level was 517.5 µmole/L. Endogenous EPO level was measured in all patients prior to epoetin alpha prescription: it varied between 2.31 and 149.6 IU/mL. Epoetin alpha (Eralfon) was prescribed at dose 12 000 IU – 0.3 mL subcutaneously 3 times a week. A review of the literature data on the use of EPO in patients with MM was conducted.Results. All patients at MM onset were dependent on renal replacement therapy and blood transfusion, therefore epoetin alpha was prescribed immediately. In case of renal function recovery and end of dialysis at target hemoglobin levels, administration of the drug was ceased. If dependence on renal replacement therapy persisted, epoetin alpha treatment continued as synthetic function of EPO-producing cells was compromised. In all clinical cases, epoetin alpha therapy was effective.Conclusion. Clot formation prevention should be kept in mind during epoetin alpha therapy. Decreased requirement for blood transfusions, improved quality of life with favorable safety profile of the drug make epoetin alpha an indispensable part of accompanying therapy in patients with MM and anemia.
Use of transpapillary cholangioscopy in oncology
Authors: Kurdanova M. Yu. , Imaraliev O. T. , Timofeev M. E. 
Published: January 2025

Stent migration is an important problem in stenting of the biliary and pancreatic ducts. It can lead to severe consequences including pancreatitis, cholangitis, duct perforation, sepsis, fistula formation. Removal of proximally migrated stents is complicated by duct diameter, their tortuosity, possible strictures.The article presents 2 clinical cases of proximal migration of plastic stents from the common bile duct with successful use of the SpyGlass system to remove the migrated stents.