bluuebunny/crossref_metadata_2025 huggingface dataset:
Manufacturing/remanufacturing based supply chain management under advertisements and carbon emissions process
Authors: Kumar Subhash , Sigroha Meenu , Kumar Kamal , Sarkar Biswajit
Published: December 2021

One of the most successful ways to get the word out about a product’s popularity across all types of customers is through advertising. It has a valuable direct influence on increasing product demand. The supply chain model is developed for manufacturer and retailer, where advertisements are dependent on demand. The advertisement rate has been considered a function that has enhanced at a diminishing rate concerning time, although the growth rate slowed. During the manufacturing cycle, the market’s demand is a function of advertisement, and the customer’s demand is a linear function of time. The production rate exceeds the demand rate during manufacturing and remanufacturing; shortages are not faced. It involves a manufacturing/remanufacturing process that quickly delivers consumer products and less waste. To keep the environment clean, the cost of carbon emissions is incorporated into the manufacturer’s and supplier’s holding and degrading costs. The model’s primary purpose is to minimize the overall cost of manufacturing and remanufacturing. The overall cost during the manufacturing cycle is higher than that during the remanufacturing cycle. This study confirms that the increasing cost of advertising provides the continuous increasing value of the total cost. A numerical example is provided, graphical representation and sensitivity analysis determine the function’s behavior and test the model.
Checkpoint-Inhibitoren
Authors: Schmale Ine
Published: December 2021

Beim Kongress der European Association of Dermato-Oncology (EADO) wurden in Keynote-Sitzungen Ergebnisse fundamentaler Forschung diskutiert. In der ersten der 3 Keynote-Sitzungen wurden Aspekte der Tumor-Mikroumgebung als Ansatz für neue Therapiestrategien thematisiert.
Die DGVS – Viszeralmedizin 2021 tagte virtuell und face-to-face
Authors: Kretzschmar Alexander
Published: December 2021

Auf ihrer Jahrestagung 2021 wagte die Deutsche Gesellschaft für Gastroenterologie, Verdauungs- und Stoffwechselkrankheiten (DGVS) eine hybride Präsentation eines breiten Spektrums von Themen aus der Gastroenterologie.
Gewalttätigkeiten in Partnerschaften – Männer
und Frauen mit Suchtproblemen als Opfer und
Täter/Täterinnen
Authors: Vogt Irmgard
Published: December 2021

In diesem Beitrag geht es um Gewalttätigkeiten in Partnerschaften und den
Zusammenhang mit dem Konsum bzw. Missbrauch von Alkohol und anderen
(stimulierenden) psychoaktiven Substanzen. Hellfelddaten, die vom
Bundeskriminalamt zusammengestellt werden, belegen, dass rund ¼
derjenigen, die wegen Gewalttätigkeiten in Partnerschaften angezeigt
werden, unter dem Einfluss von Alkohol stehen; die Mehrzahl von ihnen ist
männlich, die Minderheit weiblich. Jedoch belegen Befragungsdaten (sog.
Dunkelfelddaten), dass das Ausmaß der Partnerschaftsgewalt viel
höher ist und viel höhere Zahlen von Täter:innen und
Opfern existieren. Zudem zeigen Studien, die mit den Conflict Tactics Scales
durchgeführt worden sind, dass das Aggressionsniveau von Männern
und Frauen sich wenig voneinander unterscheidet. Das gilt allerdings nicht
für sexualisierte Gewalt, Frauen sind fast immer die Opfer von
sexualisierter Gewalt. Zusammengefasst kann festgehalten werden, dass
Männer und Frauen sich in etwa gleicher Häufigkeit sowohl
„nüchtern“ als auch unter dem Einfluss von psychoaktiven
Substanzen in leichte aggressive Auseinandersetzungen einlassen, aber es sind
vor allem Männer, die darüber hinaus gehen, insbesondere
hinsichtlich sexueller Gewalt. Schätzungen auf der Basis von
Behandlungsdaten weisen darauf hin, dass rund 2/3 der Frauen, die in
einer Suchtbehandlung sind, Opfer von Partnerschaftsgewalt sind. Eine kleinere
Gruppe von Frauen ist in kleinere aggressive Auseinandersetzungen involviert und
einige wenige Frauen sind selbst gewalttätig. Diese Gruppen von Frauen
benötigen unterschiedliche Hilfsprogramme ebenso wie Männer als
Gewalttäter oder Opfer, damit sie sich entweder gegen Gewalt in
Partnerschaften wehren können oder ihren Ärger und ihre
Impulsivität kontrollieren lernen.
Enxerto do tendão fibular longo na reconstrução do canto posterolateral do joelho
Authors: Oliveira Diego Escudeiro de , Horita Melanie Mayumi , Salas Victor Eduardo Roman , Severino Fabricio Roberto , Guglielmetti Luiz Gabriel Betoni , Jorge Pedro Baches
Published: December 2021

O canto posterolateral tem grande importância na estabilidade do joelho. Sua lesão pode ser negligenciada, o que tem um impacto direto no prognóstico e resulta em instabilidade residual, dor crônica, deformidades e falha do reparo de outras estruturas. Existem diversas técnicas de reconstrução do canto posterolateral e o uso de enxertos autólogos dos isquiotibiais ou homólogos são as mais comuns. Uma opção pouco utilizada para reconstruções ligamentares no joelho é o enxerto do tendão fibular longo. Apesar de descrito como boa opção na reconstrução do ligamento cruzado anterior, não foi encontrado nenhum caso de uso do enxerto do tendão fibular longo na reconstrução do canto posterolateral. Neste artigo, descrevemos o caso de um paciente submetido a reconstrução não anatômica do canto posterolateral com uso do enxerto do tendão fibular longo.

O paciente foi submetido a procedimentos cirúrgicos para reconstrução ligamentar e correção de deformidade ocasionada pela falha do enxerto, mas manteve instabilidade ligamentar. No planejamento pré-operatório, optou-se pela reconstrução do canto posterolateral com enxerto do tendão fibular longo ipsilateral.

Estudos evidenciaram que o enxerto do tendão fibular longo não provoca aumento de morbidade em relação ao tornozelo abordado, bem como se apresenta com comprimento e diâmetro favoráveis à reconstrução ligamentar. Dessa forma, este artigo aponta para a importância do diagnóstico correto das lesões ligamentares na fase aguda, e para uma nova técnica na reconstrução do canto posterolateral, que deve fazer parte do arsenal de conhecimentos do cirurgião, pois aumenta as opções de técnicas.
Rhinological Status of Patients with Nasolacrimal Duct Obstruction
Authors: Yartsev Vasily D. , Atkova Eugenia L. , Rozmanov Eugeniy O. , Yartseva Nina D.
Published: December 2021

Introduction Studying the state of the nasal cavity and its sinuses and the morphometric parameters of the inferior nasal conchae, as well as a comparative analysis of obtained values in patients with primary (PANDO) and secondary acquired nasolacrimal duct obstruction (SALDO), is relevant.

Objective To study the rhinological status of patients with PANDO) and SALDO).

Methods The present study was based on the results of computed tomography (CT) dacryocystography in patients with PANDO (n = 45) and SALDO due to exposure to radioactive iodine (n = 14). The control group included CT images of paranasal sinuses in patients with no pathology (n = 49). Rhinological status according to the Newman and Lund-Mackay scales and volume of the inferior nasal conchae were assessed. Statistical processing included nonparametric statistics methods; χ2 Pearson test; and the Spearman rank correlation method.

Results The difference in values of the Newman and Lund-Mackay scales for the tested groups was significant. A significant difference in scores by the Newman scale was revealed when comparing the results of patients with SALDO and PANDO. Comparing the scores by the Lund-Mackay scale, a significant difference was found between the results of patients with SALDO and PANDO and between the results of patients with PANDO and the control group.

Conclusion It was demonstrated that the rhinological status of patients with PANDO was worse than that of patients with SALDO and of subjects in the control group. No connection was found between the volume of the inferior nasal conchae and the development of lacrimal duct obstruction.
Avaliação automatizada da infiltração e remoção celular em scaffolds descelularizados – Estudo experimental em coelhos
Authors: Santos Alex de Lima , Silva Camila Gonzaga da , Barreto Leticia Siqueira de Sá , Tamaoki Marcel Jun Sugawara , Almeida Fernando Gonçalves de , Faloppa Flavio
Published: December 2021

Objetivo Mensuração semiquantitativa e automatizada da remoção de material nuclear e da infiltração celular em scaffolds tendinosos descelularizados (STDs).

Método Foram utilizados 16 coelhos Nova Zelândia puros, sendo o tendão do músculo gastrocnêmio coletado bilateralmente de metade destes animais (16 tendões coletados); 4 foram mantidos como controle e 12 foram submetidos ao protocolo de descelularização (STD). Dos STDs, 8 foram utilizados como implante in vivo no modelo experimental de lesão do manguito rotador (LMR) e os restantes, assim como os controles, foram utilizados na avaliação semiquantitativa e automatizada da remoção de material nuclear. Os oito coelhos adicionais foram utilizados na confecção do modelo experimental de LMR e posterior avaliação da infiltração celular após 2 ou 8 semanas, dentro do STD.

Resultados A análise semiquantitativa e automatizada utilizada demonstrou uma remoção de 79% do material nuclear (p < 0,001 e poder > 99%) e uma diminuição de 88% (p < 0,001 e poder > 99%) na área ocupada por material nuclear após o protocolo de descelularização. Sobre a infiltração celular no STD, foi observado um aumento de 256% (p < 0,001 e poder > 99%) no número de células dentro do STD na comparação entre 2 e 8 semanas de pós-operatório.

Conclusão O método de mensuração semiquantitativo e automatizado proposto foi capaz de mensurar objetivamente a remoção de material nuclear e a infiltração celular no STD.
Using Nonscalp Hair in Scalp Hair Restoration—Theory and Execution
Authors: True Robert H.
Published: December 2021

Harvesting of beard and body hair follicles for transplantation can be an effective form of treatment for appropriate patients. These patients may have had prior scalp transplantation and require repair but do not have sufficient scalp donor follicles remaining. Other patients will have these hairs mixed with scalp hairs to produce a greater density of hair on the bald scalp. Follicular unit excision (FUE) is preferred for body and beard follicle harvesting. Not all body hair is suitable for transplantation. Only hairs that are similar in appearance and behavior to scalp hair are suitable for transplantation to the scalp. The best nonscalp sources are the beard and anterior torso. Hairs from other body sites may be used for transplantation to the eyebrows. The standard techniques of FUE harvesting and anesthesia must be modified from those used in scalp harvesting to be safe and effective. With proper patient selection and technique, a significant cosmetic benefit can be achieved from these procedures.
Stroke-Like Migraine after Radiation Treatment Syndrome in Children with Cancer
Authors: Ahmed Qurratulain S. , Sadighi Zsila S. , Lucas John T. , Khan Raja B.
Published: December 2021

Stroke-like migraine attacks after radiation therapy (SMART) syndrome is a symptom complex of transient neurological deficits, headache, and abnormal cortical contrast enhancement on brain MRI. Pathophysiology is unclear, but exposure to cranial radiation (RT) is a sine qua non. We report five children with SMART syndrome treated with RT therapy for medulloblastoma (n = 3), atypical teratoid rhabdoid tumor (n = 1), and pleomorphic xanthoastrocytoma (n = 1). Median age at tumor diagnosis was 9.4 years (range 5.1–14.7). Median follow-up from cancer diagnosis was 3.1 years (range 1.4–12.9). All patients had 54 Gy focal RT treatment and medulloblastoma children had additional 36 Gy craniospinal irradiation. Median time from the end of RT to first transient neurological deficit was 1 year (range 0.7–12.1). The median follow-up since first SMART episode was 0.6 years (range 0.3–2.6). Presenting symptoms included the gradual development of unilateral weakness (n = 4), non-fluent dysphasia (n = 1), somnolence (n = 1), and headaches (n = 3). Neurological deficits resolved within 30 minutes to 10 days. Transient cortical enhancement on magnetic resonance imaging (MRI) was confirmed in two children and was absent in the other three. Two children had a single and three had multiple episodes over the next few months. Two children with protracted symptoms responded to 3 days treatment with high dose intravenous methylprednisolone. Symptoms ultimately resolved in all patients. SMART syndrome is a rare disorder characterized by slow evolution of neurological deficits with variable abnormal cortical contrast enhancement. The use of steroids may improve symptoms and speed resolution.
Range-separated hybrid functionals for mixed dimensional heterojunctions: Application to phthalocyanines/MoS2
Authors: Zhou Qunfei , Liu Zhen-Fei , Marks Tobin J. , Darancet Pierre
Published: December 2021

We analyze the electronic structure and level alignment of transition-metal phthalocyanine (MPc) molecules adsorbed on two-dimensional MoS2 employing density functional theory (DFT) calculations. We develop a procedure for multi-objective optimal tuning of parameters of range-separated hybrid functionals in these mixed-dimensional systems. Using this procedure, which leads to the asymptotically correct exchange–correlation potential between molecules and two-dimensional materials, we obtain electronic structures consistent with experimental photoemission results for both energy level alignment and electronic bandgaps, representing a significant advance compared to standard DFT methods. We elucidate the MoS2 valence resonance with the transition-metal phthalocyanine non-frontier 3d orbitals and its dependence on the transition-metal atomic number. Based on our calculations, we derive parameter-free model self-energy corrections that quantitatively account for the effects of the heterogeneous dielectric environment on the electronic structure of these mixed-dimensional heterojunctions.
Mid-infrared cylindrical vector beams enabled by dielectric metasurfaces
Authors: Zalogina Anastasia , Wang Luyao , Melik-Gaykazyan Elizaveta , Kivshar Yuri , Shadrivov Ilya , Kruk Sergey
Published: December 2021

Over the last decade, photonics in the mid-infrared (mid-IR) frequency range had major advances in both generation and detection of light. However, efficient manipulation of the mid-IR light still faces many challenges. Spatially inhomogeneous control over the wavefront and polarization of mid-IR radiation is particularly difficult. Many standard techniques used for visible and near-infrared frequencies, such as liquid crystal-based spatial light modulation, are not applicable in the mid-IR due to unfavorable material properties in that spectral range. Here, we demonstrate spatially inhomogeneous polarization control of the mid-infrared light using custom-designed vortex retarders. Vortex retarders, while being widely used in the near-infrared and visible spectral ranges for generation of cylindrical vector beams, have been missing in the mid-infrared spectral range. Our implementation of mid-infrared vortex retarders is based on the concept of metasurfaces. We demonstrate metasurface-based vortex retarders at the wavelengths of 2.9 and 3.5 μm. We compare the performance of all-dielectric metasurface vortex retarders with the elements arranged in square and hexagonal lattices [Arbabi et al., Nat. Nanotechnol. 10, 937–943 (2015) and Arbabi et al., Nat. Commun. 6, 7069 (2015)]. Our work could accelerate the adoption of metasurfaces for the development of novel classes of mid-infrared optical components.
Observation of self-assembled InGaN/GaN superlattice structure grown on N-polar GaN by plasma-assisted molecular beam epitaxy
Authors: Khan K. , Diez S. , Sun Kai , Wurm C. , Mishra U. K. , Ahmadi E.
Published: December 2021

In this paper, we report on the observation of self-assembled InGaN/(In)GaN superlattice (SL) structure in a nominal “InGaN” film grown on N-polar GaN substrate. 350 nm thick InGaN films were grown at different temperatures ranging from 600 to 690 °C. Structural characterization was conducted via atomic force microscopy, scanning transmission electron microscopy, high-resolution x-ray diffraction, and XRD reciprocal space map. A SL structure was unexpectedly observed on all samples. However, the In content in each layer varied depending on growth temperature. By increasing the substrate temperature to 670 °C, a periodic structure composed of 3 nm In0.26Ga0.74N and 3 nm of GaN with a surface roughness of ∼0.7 nm was achieved. This work establishes a method for the growth of InGaN films with high structural quality on N-polar GaN and opens a new pathway for the design and fabrication of various electronic and optoelectronic devices with enhanced performance.
Growth of MoS2–Nb-doped MoS2 lateral homojunctions: A monolayer p–n diode by substitutional doping
Authors: Okada Mitsuhiro , Nagamura Naoka , Matsumura Tarojiro , Ando Yasunobu , Lu Anh Khoa Augustin , Okada Naoya , Chang Wen-Hsin , Nakanishi Takeshi , Shimizu Tetsuo , Kubo Toshitaka , Irisawa Toshifumi , Yamada Takatoshi
Published: December 2021

Monolayer transition metal dichalcogenides (TMDs) have been considered as promising materials for various next-generation semiconductor devices. However, carrier doping techniques for TMDs, which are important for device fabrication, have not been completely established yet. Here, we report a monolayer p–n junction formed using in situ substitutional doping during chemical vapor deposition (CVD). We synthesized monolayer MoS2–Nb-doped MoS2 lateral homojunctions using CVD and then characterized their physical and electrical properties. The optimized growth condition enabled us to obtain spatially selective and heavy Nb doping in the edge region of a single-crystalline MoS2, thus resulting in an obvious work function difference between the inner and edge regions of the crystal. The obtained monolayer crystal demonstrated n-type and degenerate p-type semiconducting behaviors in each region, and a clear rectifying behavior across the n-type and p-type interface was observed. We believe that the results obtained can expand the research field of exploring two-dimensional homo p–n junctions, which can be important for realizing various TMD-based devices, such as diodes and field-effect transistors, with low-contact resistance.
Polymerized hybrid Hf-based hydroquinone/Al2O3 bilayer structure by molecular/atomic layer deposition for non-volatile resistive random access memory
Authors: Lei Jin , Ding Wen-Juan , Liu Chang , Wu Di , Li Wei-Min , Li Ai-Dong
Published: December 2021

In this work, we fabricated the Pt/Hf-based hydroquinone (Hf-HQ)/Al2O3/TiN/Si bilayer hybrid memory by molecular layer deposition/atomic layer deposition. The hybrid memory units exhibit electroforming-free bipolar resistive switching (RS) characteristics with tiny fluctuation of operation voltages within 0.2 V, ON/OFF ratio above 102, and good endurance/retention properties. Meanwhile, the multi-state data storage capability is confirmed in hybrid devices. The RS mechanism based on conducting filaments has been proposed. The favorable linkage and rupture of the conducting filament prefer to occur at the interface of the hybrid Hf-HQ layer and Al2O3 layer, resulting in the brilliant performances. Furthermore, flexible hybrid memory devices fabricated on bendable mica show comparable RS behaviors to the Si-based ones at the bending radius of 7.5 mm, indicative of great potential in flexible multilevel resistive random access memory applications.
Accelerating cathode material discovery through ab initio random structure searching
Authors: Zhu Bonan , Lu Ziheng , Pickard Chris J. , Scanlon David O.
Published: December 2021

The choice of cathode material in Li-ion batteries underpins their overall performance. Discovering new cathode materials is a slow process, and all major commercial cathode materials are still based on those identified in the 1990s. Discovery of materials using high-throughput calculations has attracted great research interest; however, reliance on databases of existing materials begs the question of whether these approaches are applicable for finding truly novel materials. In this work, we demonstrate that ab initio random structure searching (AIRSS), a first-principles structure prediction method that does not rely on any pre-existing data, can locate low energy structures of complex cathode materials efficiently based only on chemical composition. We use AIRSS to explore three Fe-containing polyanion compounds as low-cost cathodes. Using known quaternary LiFePO4 and quinary LiFeSO4F cathodes as examples, we easily reproduce the known polymorphs, in addition to predicting other, hitherto unknown, low energy polymorphs and even finding a new polymorph of LiFeSO4F that is more stable than the known ones. We then explore the phase space for Fe-containing fluoroxalates, predicting a range of redox-active phases that are yet to be experimentally synthesized, demonstrating the suitability of AIRSS as a tool for accelerating the discovery of novel cathode materials.
Platypus quercivorus
. [Distribution map].
Authors: CABI  , EPPO
Published: December 2021

A new distribution map is provided for
Platypus quercivorus
(Murayama). Coleoptera: Platypodidae. Hosts: Wide host range but especially
Quercus
spp. and other Fagaceae. Information is given on the geographical distribution in Asia (India, West Bengal, Indonesia, Java, Japan, Honshu, Hokkaido, Kyushu, Ryukyu Islands, Shikoku, Laos, Taiwan, Thailand and Vietnam).
The versatile regulation of K2P channels by polyanionic lipids of the phosphoinositide and fatty acid metabolism
Authors: Riel Elena B. , Jürs Björn C. , Cordeiro Sönke , Musinszki Marianne , Schewe Marcus , Baukrowitz Thomas
Published: December 2021

Work over the past three decades has greatly advanced our understanding of the regulation of Kir K+ channels by polyanionic lipids of the phosphoinositide (e.g., PIP2) and fatty acid metabolism (e.g., oleoyl-CoA). However, comparatively little is known regarding the regulation of the K2P channel family by phosphoinositides and by long-chain fatty acid–CoA esters, such as oleoyl-CoA. We screened 12 mammalian K2P channels and report effects of polyanionic lipids on all tested channels. We observed activation of members of the TREK, TALK, and THIK subfamilies, with the strongest activation by PIP2 for TRAAK and the strongest activation by oleoyl-CoA for TALK-2. By contrast, we observed inhibition for members of the TASK and TRESK subfamilies. Our results reveal that TASK-2 channels have both activatory and inhibitory PIP2 sites with different affinities. Finally, we provided evidence that PIP2 inhibition of TASK-1 and TASK-3 channels is mediated by closure of the recently identified lower X-gate as critical mutations within the gate (i.e., L244A, R245A) prevent PIP2-induced inhibition. Our findings establish that K+ channels of the K2P family are highly sensitive to polyanionic lipids, extending our knowledge of the mechanisms of lipid regulation and implicating the metabolism of these lipids as possible effector pathways to regulate K2P channel activity.
Production of unknown neutron-rich transuranium isotopes 245–249Np, 248–251Pu, 248–254Am, and 252–254Cm in multinucleon transfer reactions
Authors: Li Jingjing , Zhang Gen , Zhang Xinrui , Zhang Yuhai , Liu Zhong , Zhang Feng-Shou
Published: December 2021

The production cross sections of unknown neutron-rich transuranium isotopes of elements Np, Pu, Am and Cm are investigated in multinucleon transfer (MNT) reactions based on the dinuclear system model with GEMINI code. The influence of the incident energy on the production of neutron-rich transuranium nuclei in actinide–actinide collisions is studied. The calculation results show that the final isotopic production cross sections are larger at 1.06–1.10 V
cont than at other energies. Considering the high fissility of transuranium nuclides, 1.06 V
cont is chosen as the optimal incident energy. The N/Z ratio equilibration mechanism in the nucleon transfer process is also studied in this work. The larger difference of N/Z ratio between projectile and target corresponds to larger neutron diffusion during the nucleon exchange process. The 238U beam with high N/Z ratio and neutron-rich actinide targets are good selections to produce neutron-rich transuranium nuclides. The production cross sections of unknown neutron-rich transuranium isotopes 245–249Np, 248–251Pu, 248–254Am, and 252–254Cm are predicted in 238U-induced actinide-based (249Bk, 249Cf, and 252Cf) MNT reactions. It is found that a large number of these unknown neutron-rich transuranium nuclei could be generated at the level of nb to μb in the reactions 238U + 249Bk and 238U + 252Cf. Our research indicates that the reaction 238U + 249Bk is a suitable projectile-target combination in the current experimental conditions and the reaction 238U + 252Cf could be a promising candidate to produce unknown neutron-rich transuranium nuclides in case that the 252Cf target were to be achieved in the future.
Precise Positions of Triton in 2010–2014 based on Gaia-DR2
Authors: Zhang Huiyan , Yu Yong , Yan Dan , Tang Kai , Qiao Rongchuan
Published: December 2021

With unique orbital and physical characteristics, Triton is a very important target because it may contain information of the origin and evolution of the solar system. Besides space explorations, ground-based observations over long time also play a key role on research of Triton. High-precision positions of Triton obtained from ground telescopes are of great significance for studying its orbital evolution and the physical properties of Neptune. As a long-term observational target, Triton has been observed by the 1.56 m telescope of Shanghai Astronomical Observatory since 1996. In this paper, based on our AAPPDI software and with Gaia DR2 as the reference catalog, 604 positions of Triton during 2010–2014 are calculated, with standard errors of 19–88 mas. A comparison between our results and the ephemeris (DE431+nep096) is also given.
Variational approach for recovering viscoelasticity from MRE data
Authors: Jiang Yu , Nakamura Gen , Shirota Kenji
Published: December 2021

This paper deals with an inverse problem for recovering the viscoelasticity of a living body from MRE (Magnetic Resonance Elastography) data. Based on a viscoelastic partial differential equation whose solution can approximately simulate MRE data, the inverse problem is transformed to a least square variational problem. This is to search for viscoelastic coefficients of this equation such that the solution to a boundary value problem of this equation fits approximately to MRE data with respect to the least square cost function. By computing the Gateaux derivatives of the cost function, we minimize the cost function by the projected gradient method is proposed for recovering the unknown coefficients. The reconstruction results based on simulated data and real experimental data are presented and discussed.
Sensitivity analysis and practical identifiability of the mathematical model for partial differential equations
Authors: Krivorotko O , Andornaya D
Published: December 2021

A sensitivity-based identifiability analysis of mathematical model for partial differential equations is carried out using an orthogonal method and an eigenvalue method. These methods are used to study the properties of the sensitivity matrix and the effects of changes in the model coefficients on the simulation results. Practical identifiability is investigated to determine whether the coefficients can be reconstructed with noisy experimental data. The analysis is performed using correlation matrix method with allowance for Gaussian noise in the measurements. The results of numerical calculations to obtain identifiable sets of parameters for the mathematical model arising in social networks are presented and discussed.
Practical identifiability of mathematical models of biomedical processes
Authors: Kabanikhin Sergey , Bektemesov Maktagali , Krivorotko Olga , Bektemessov Zholaman
Published: December 2021

The paper is devoted to a numerical study of the uniqueness and stability of problems of determining the parameters of dynamical systems arising in pharmacokinetics, immunology, epidemiology, sociology, etc. by incomplete measurements of certain states of the system at fixed time. Significance of parameters difficult to measure is very high in many areas, as their definition will allow physicians and doctors to make an effective treatment plan and to select the optimal set of medicines. Due to the fact that the problems under consideration are ill-posed, it is necessary to investigate the degree of ill-posedness before its numerical solution. One of the most effective ways is to study the practical identifiability of systems of nonlinear ordinary differential equations that will allow us to establish a set of identifiable parameters for further numerical solution of inverse problems. The paper presents methods for investigating practical identifiability: the Monte Carlo method, the matrix correlation method, the confidence intervals method and the sensitivity based method. There is presented two mathematical models of the pharmacokinetics of the C-peptide and mathematical model of the spread of the COVID — 19 epidemic. The identifiability investigation will allow us to construct a regularized unique solution of the inverse problem.
Discretization of equations Gelfand-Levitan-Krein and regularization algorithms
Authors: Maktagali Bektemessov , Laura Temirbekova
Published: December 2021

The paper considers the initial-boundary-value inverse problem of acoustics for onedimensional and multidimensional cases. The inverse problems are to reconstruct the coefficients using one-dimensional and multidimensional analogues of the Gelfand-Levitan-Krein integral equations. It is known that such equations are linear integral Fredholm equations of the first kind, which are ill-posed. The aim of the work is to find a numerical solution of the Gelfand-Levitan-Krein equation using iterative regularizing algorithms. Using the specifics of these equations (the kernel of the equation depends on the difference of arguments) it is possible to create highly efficient iterative regularizing algorithms. The implemented algorithms can be successfully applied in solving such problems as reconstruction of blurred and defocused images, inverse problem of gravimetric, linear programming problem with inaccurately given matrix of constraints, inverse problem of Geophysics, inverse problems of computed tomography, etc. The main results of the work are the discretization of the one-dimensional and multidimensional Gelfand-Levitan-Krein equation and the construction of iterative regularization algorithms.
Inverse, ill-posed problems, essentially different solutions and explicit formulas for solutions
Authors: Demidov A.S.
Published: December 2021

A request for an inverse problem, as well as for an incorrect problem produces tens of millions of answers in the Internet. In the past few decades, hundreds of international conferences on these topics have been held annually. Problems of this kind are quite involved, and their numerical analysis requires the development of special methods and numerical algorithms. Explicit formulas provide the main tool for testing these methods and numerical algorithms. The Cauchy problem for an elliptic equation is a classical ill-posed problem, which serves as a model for many inverse and incorrect problems. In the present paper we give a numerically realizable explicit formula for solving the Cauchy problem in a two-dimensional domain for a general second-order linear elliptic equation with analytic coefficients and the Cauchy analytic data on the analytic boundary.
Controlling effort, catch and biomass in models of the global marine fisheries
Authors: Ryzhenkov Alexander V.
Published: December 2021

The starting point is the reduced model of global marine fisheries designated by W-3. The main variables of an ordinary differential equation are: the stock of bioresource, its net natural increase, as well as the catch value, which linearly depends on exogenous effort and nonlinearly on available biomass. In W-4, the effort became endogenous as a result of its positive feedback from biomass.

In both models, there are values of control parameters in the catch equations, in which the value of the latter can be maintained for a long time at the maximum stable level, with the exception of transition sections. The principle of necessary precaution is fulfilled for small fish stocks more reliably in W-4 than in W-3, thanks to the transformation of the saddle into an unstable node with a common stable node.

For these one-dimensional models, the author proposed an original generalization - the R-1 model of two nonlinear ordinary differential equations. In the latter effort, a new phase variable appears, subordinated to proportional control and derivative regulation. Biomass serves as a “prey”, and the effort appears as a “predator”.

For two key control parameters, areas of change were identified for which the target stationary state is a locally asymptotically stable node or focus in R-1. A policy has been proposed for the restoration of depleted fish stocks and a transition to a long-term maximum sustainable harvest has been determined.

Optimization over a wide time frame (from 40 to 400 years) allows us to calculate the values of the selected control parameters for which the integral catch volume in R-1 is higher than in W-4 for the same initial values of stock, effort and catch. Social constraints from below on the magnitude of the effort, as well as the desired nature of the transition to the target stationary state, are taken into account. The danger of biomass collapse is overcome, unlike previous models.
VIII-th International Young Scientists Conference on Information Technologies, Telecommunications and Control Systems
Authors: Kruglov Artem , Aksenov Konstantin
Published: December 2021

The VIII-th International Young Scientists Conference on Information Technologies, Telecommunications and Control Systems (ITTCS) will be held from 16th to 17th of December, 2021, at the Innopolis University.

The Conference agenda will work as a competence platform, providing facilities for efficient communication to boost the IT science and engineering knowledge of young scientists and help them in their professional development. Young scientists will be given a unique chance not only to improve their presentation skills and public speaking abilities but to gain an experience of scientific publication.

The importance of the project lies in the need to create conditions for the growth of recognition of a young scientist in world scientific circles and an increase in interest in his work, an increase in the level of scientific publications of students, postgraduate students and young scientists, and an increase in their quality. The exchange of experience in the field of professional interests with colleagues from foreign and Russian universities and scientific organizations will improve the qualifications of researchers and establish promising scientific contacts among young scientists.

List of Programm Committee, General Chair are available in this pdf.
Mathematical modeling and optimization of traffic flows
Authors: Kasatkina E V , Vavilova D D
Published: December 2021

The article presents a mathematical model for optimizing traffic flows in an urban environment based on a stochastic approach. It allows to optimize traffic flows using a genetic algorithm by changing the phases of traffic lights operation. An exponential law of distribution of the generation of cars at the input points of the transport network has been established. The relationship between the intensity of servicing the traffic flow and the time of the green signal of the traffic light is revealed. Practical calculations have confirmed the applicability of the optimization model in traffic management.
Quantization noise in low bit quantization and iterative adaptation to quantization noise in quantizable neural networks
Authors: Chudakov D , Goncharenko A , Alyamkin S , Densidov A
Published: December 2021

Quantization is one of the most popular and widely used methods of speeding up a neural network. At the moment, the standard is 8-bit uniform quantization. Nevertheless, the use of uniform low-bit quantization (4- and 6-bit quantization) has significant advantages in speed and resource requirements for inference. We present our quantization algorithm that offers advantages when using uniform low-bit quantization. It is faster than quantization-aware training from scratch and more accurate than methods aimed only at selecting thresholds and reducing noise from quantization. We also investigated quantization noise in neural networks for low-bit quantization and concluded that quantization noise is not always a good metric for quantization quality.
Creation and implementation of a set of game strategies based on training neural networks with reinforcement learning
Authors: Kozlov D S , Polovikova O N
Published: December 2021

The study explores the problems of reinforcement learning and finding non-obvious play strategies using reinforcement learning. Two approaches to agent training (blind and pattern-based) are considered and implemented. The advantage of the self-learning approach with reinforcement using patterns as applied to a specific game (tic-tac-toe five in a row) is shown. Recorded and analyzed the use of unusual strategies by an agent using a pattern-based approach.
Dynamic classification approach using scalable ensemble of autoencoders to classify data with drift
Authors: Gurina Anastasiya O , Eliseev Vladimir L , Kolpinskiy Sergey V
Published: December 2021

The problem of classification under concept drift conditions is investigated. The importance of anomaly detection is emphasized as a key feature of successful approach to operate with adversarial attacks and data poisoning. An approach to classification in the context of both drift and anomalies is introduced. It is based on ensemble of one-class classifiers, implemented by neural network autoencoders. Numeric parameters and supplementary logic are also supposed to distinguish between different classification cases. The quality of classifiers is estimated by original characteristics (EDCA), which examine both training set area and the area around it. The proposed approach is evaluated on synthetic data to highlight its properties in various conditions including normal, drift, new class and anomaly cases.
Explainable source code authorship attribution algorithm
Authors: Bogdanova Alina , Romanov Vitaly
Published: December 2021

Source Code Authorship Attribution is a problem that is lately studied more often due improvements in Deep Learning techniques. Among existing solutions, two common issues are inability to add new authors without retraining and lack of interpretability. We address both these problem. In our experiments, we were able to correctly classify 75% of authors for diferent programming languages. Additionally, we applied techniques of explainable AI (XAI) and found that our model seems to pay attention to distinctive features of source code.
Development of a model for assessing energy consumption of a system
Authors: Dlamini Gcinizwe , Kruglov Artem , Vasquez Xavier , Pavlov Vyacheslav
Published: December 2021

The recent trends in the ICT industry are related to the development and implementation of green software products and practices. The way to seek for energy efcient solutions starts from the proper and precise assessment of the current state of the system in hand. In this paper we present the software-based approach to the energy efciency assessment. We propose machine learning based approach to estimate energy consumed by a computer system. We evaluated our approach on datasets extracted from systems running on Linux and Windows operating system. Using MSE, MAE and R2 our energy consumption estimation model reached 0.0007, 0.0104, 0.9214, respectively.
Identifying ”good” practices of developers using corrective and preventive actions and their impact on software metrics
Authors: Daniakin Kirill
Published: December 2021

This work presents a literature review, an analysis on how certain actions of software developers impact certain software metrics (such as defect density), and an attempt to highlight good (most efective in terms of software metrics) development practices based on the corrective and preventive actions extracted from the literature. Across multiple relevant studies, defect density was the most used metric, that is why this metric was used to identify the good practices. The most used practices are those that were encountered the most during data extraction from the relevant literature. The extracted actions were categorized using CMMI taxonomy. Overall, 115 unique actions were identifed falling into 53 CMMI taxonomy categories. There were 30 good and the most used practices identifed that fell into 4 CMMI categories.
Development of a mobile system using augmented reality technologies for school and preschool children for training mental arithmetic
Authors: Shiryaev V V , Polovikova O N
Published: December 2021

This paper examines the problem of using augmented reality technologies to teach children of school and preschool age the skills of mental arithmetic. The main features of the development of training systems with augmented reality have been studied. The developed mobile system allows you to get and consolidate the basic skills of mental arithmetic using a set of game levels in the form of a 3D simulator. The application can be used for children with different initial training.
Cloud gaming controls
Authors: Kazakov Andrei
Published: December 2021

With an increasing interest in cloud gaming, streaming services requires different techniques for preprocessing of data coming from users. Such techniques should overcome the problem of delays while transferring data through the network. In this work, we are focusing on sending the correct states of users’ devices (keyboard, mouse, and gamepad) to avoid sticking keys while playing games through our streaming software. We present a simple method that can solve the problem of sticky keys. The evaluation of the proposed approach shows that using this method we can increase the number of successfully registered keys in a server.
Data transfer from satellite to ground station emulator
Authors: Bubnova M A , Baleskin V A , Kosinov A N , Abrameshin D A , Romanov L A , Nikitin B S
Published: December 2021

“Data transfer from satellite to ground station emulator” application has been developed for modelling data transfer between a small spacecraft at low-earth orbit and a control center on Earth. The application takes into account multiple parameters allowing to replace a number of experiments. Additionally, the SGP4 model and models such of parameters such as bit error rate and rain rate attenuation are studied and used in development of the application. Finally, the use cases for the application in education and introduction of school and university students to space-themed projects are considered.
A simulation chain for reflectometry and non-linear MHD: type-I ELM case
Authors: Vicente J. , da Silva F. , Hoelzl M. , Conway G.D. , Heuraux S.
Published: December 2021

A complete chain from a non-linear MHD plasma model simulation through full-wave code simulations implementing synthetic conventional reflectometry is established. For this purpose, the two-dimensional full-wave code REFMUL is employed together with MHD descriptions obtained from the JOREK code. First results of the integrated modeling are presented here where a type-I ELM crash, leading to a fast collapse of the H-mode pedestal, was taken as case-study. The REFMUL simulations were customized to implement synthetic reflectometry in conventional set-up using fixed frequency probing with O-mode waves. Posing challenging conditions for reflectometry, the type-I ELM crash reveals some of the merits and caveats of the diagnostic technique. This work also opens up the possibility to extend modeling to other MHD or ELM studies and provide support to experimental observations with reflectometry.
The trigger and data acquisition system of the FASER experiment
Authors: Abreu H. , Amin Mansour E. , Antel C. , Ariga A. , Ariga T. , Bernlochner F. , Boeckh T. , Boyd J. , Brenner L. , Cadoux F. , Casper D.W. , Cavanagh C. , Chen X. , Coccaro A. , Débieux S. , Dmitrievsky S. , D'Onofrio M. , Dozen C. , Favre Y. , Fellers D. , Feng J.L. , Ferrere D. , Gamberini E. , Galantay E.K. , Gibson S. , Gonzalez-Sevilla S. , Gornushkin Y. , Gwilliam C. , Hsu S.-C. , Hu Z. , Iacobucci G. , Inada T. , Jakobsen S. , Johnson E. , Kajomovitz E. , Kling F. , Kose U. , Kuehn S. , Lefebvre H. , Levinson L. , Li K. , Liu J. , Magliocca C. , McFayden J. , Milanesio M. , Meehan S. , Mladenov D. , Moretti T. , Munker M. , Nakamura M. , Nakano T. , Nessi M. , Neuhaus F. , Nevay L. , Otono H. , Pandini C. , Pang H. , Paolozzi L. , Petersen B. , Pietropaolo F. , Prim M. , Queitsch-Maitland M. , Resnati F. , Rizzi C. , Rokujo H. , Ruiz-Cholis E. , Salfeld-Nebgen J. , Sato O. , Scampoli P. , Schmieden K. , Schott M. , Sfyrla A. , Shively S. , Sipos R. , Spencer J. , Takubo Y. , Tarannum N. , Theiner O. , Torrence E. , Tufanli S. , Vasina S. , Vormwald B. , Wang D.
Published: December 2021

The FASER experiment is a new small and inexpensive experiment that is placed 480 meters downstream of the ATLAS experiment at the CERN LHC. FASER is designed to capture decays of new long-lived particles, produced outside of the ATLAS detector acceptance. These rare particles can decay in the FASER detector together with about 500–1000 Hz of other particles originating from the ATLAS interaction point. A very high efficiency trigger and data acquisition system is required to ensure that the physics events of interest will be recorded. This paper describes the trigger and data acquisition system of the FASER experiment and presents performance results of the system acquired during initial commissioning.
An induced annealing technique for SiPMs neutron radiation damage
Authors: Cordelli M. , Diociaiuti E. , Ferrari A. , Miscetti S. , Müller S. , Pezzullo G. , Sarra I.
Published: December 2021

The use of Silicon Photo-Multipliers (SiPMs) has become popular in the
design of High Energy Physics experimental apparatus with a growing
interest for their application in detector area where a significant
amount of non-ionising dose is delivered. For these devices, the main
effect caused by the neutron fluence is a linear increase of the leakage
current. In this paper, we present a technique that provides a
partial recovery of the neutron damage on SiPMs by means of an
Electrical Induced Annealing. Tests were performed, at the temperature of 20°C, on a sample of
three SiPM arrays (2×3) of 6 mm2 cells with 50 μm
pixel sizes: two from Hamamatsu and one from
SensL. These SiPMs have been exposed to neutrons generated by the Elbe Positron Source facility (Dresden),
up to a total fluence of 8 × 1011 n1
MeV-eq/cm2. Our techniques allowed to reduced the leakage
current of a factor ranging between 15-20 depending on the overbias
used and the SiPM vendor. Because, during the process the
SiPM current can reach O(100 mA), the sensors need to be operated in a condition that
provides thermal dissipation. Indeed, caution must be used when applying this kind of
procedures on the SiPMs, because it may damage permanently the devices themself.