Расширенная ролевая модель безопасности для веб-приложений, основанная на иерархии путей

Web applications security is a complex problem with several aspects. One aspect is access control according to specified security policy. Access control is accomplished by security model restrictions. This research is dedicated to developing security access control model for web applications. This work describes path-based RBAC model, which improves RBAC and allows flexible access control using request path (URI). Authors created guidelines to apply model’s elements for real-world web applications. Developing web applications with model described allows reducing security risksОбеспечение безопасности веб-приложений – комплексная проблема, имеющая несколько аспектов. Одним из аспектов является разграничение доступа в соответствии с заданной политикой безопасности. Разграничение доступа осуществляется путем применения ограничений, накладываемых моделью безопасности. Данная работа посвящена разработке модели безопасности для разграничения доступа в веб-приложениях. В работе описана основанная на иерархии путей ролевая модель безопасности, которая улучшает базовую модель RBAC и обеспечивает гибкое разграничение доступа на основе пути запроса (URI). Разработаны рекомендации по применению модели для веб-приложений. Разработка веб-приложений с применением описанной модели позволяет снизить риски, связанные с безопасность

Problematization of religious threats in the modern social discourse of Western countries and Russia

The research objective is a comparative analysis of the problems of religious threats in modern social security discourse in Western countries and Russia.  The methodological basis of the study is the phenomenological approach used in the process of explaining the meanings arising in the interaction of religion and society and the comparative approach aimed at analyzing the impact on the consciousness of believers in traditional and non-traditional religions. The result of the study is proof of the provision that the content of modern social discourse on the religious threat in the West is under the influence of a concept that separates the activities of religious organizations recognized as a security threat, and the content of religious doctrines not recognized as a threat. Another result is the statement that in Russia, the most socially influential concept reflects the problem of religious threats in the context of the friend-foe dichotomy, according to which non-traditional religious associations are considered to be the source of religious threats to social security

Diffusion doping route to plasmonic Si/SiOx nanoparticles

International audienceSemiconductor nanoparticles (SNPs) are a valuable building block for functional materials. Capabilities for engineering of electronic structure of SNPs can be further improved with development of techniques of doping by diffusion, as post-synthetic introduction of impurities does not affect the nucleation and growth of SNPs. Diffusion of dopants from an external source also potentially allows for temporal control of radial distribution of impurities. In this paper we report on the doping of Si/SiOx SNPs by annealing particles in gaseous phosphorus. The technique can provide efficient incorporation of impurities, controllable with precursor vapor pressure. HRTEM and X-ray diffraction studies confirmed that obtained particles retain their nanocrystallinity. Elemental analysis revealed doping levels up to 10%. Electrical activity of the impurity was confirmed through thermopower measurements and observation of localized surface plasmon resonance in IR spectra. The plasmonic behavior of etched particles and EDX elemental mapping suggest uniform distribution of phosphorus in the crystalline silicon cores. Impurity activation efficiencies up to 34% were achieved, which indicate high electrical activity of thermodynamically soluble phosphorus in oxide-terminated nanosilicon

THE INITIAL STAGE OF TESTING THE DEVELOPED APPARATUS TO DETERMINE THE INTERNATIONAL NORMALIZED RATIO

Протромбиновое время (ПТВ) – это лабораторный показатель, позволяющий оценить внешний путь свертывания крови (активность факторов I, II, V, VII и X). Для стандартизации результатов теста ПТВ введен показатель МНО. МНО = (ПТВ пациента/ПТВ 100%)МИЧ. Набирает популярность контроль МНО с помощью портативных коагулометров. На российском рынке представлены: CoaguChek XS, qLabs Electrometer. Главная проблема − их высокая стоимость и дороговизна в эксплуатации. Российские ученые давно задались вопросом импортозамещения. Однако, в литературе нет информации о тестировании разработок. При разработке экспериментальной модели для измерения МНО и ПТВ, мы руководствовались результатами литературного поиска по наукометрическим базам данных Elibrary, Scopus, PubMed и WoS с учетом предполагаемой стоимости разрабатываемой модели.Цель исследования. Провести начальный этап тестирования экспериментальной модели с сопоставлением полученных результатов с данными сертифицированной лаборатории.Материал и методы. Обследовано 70 пациентов (26 мужчин и 44 женщины), принимающих «Варфарин». Материал для измерения экспериментальной моделью – капиллярная кровь. В качестве тест-системы применяли тест-полоску qLabs® PT-INR Test Strip.Результаты. Разница ПТВ тестируемой модели и результатов сертифицированной лаборатории ± 1–2 секунды. ПТВ Протромбин-калибратора 13 сек. Протромбиновое отношение Протромбин-калибратора 1,0. Пациент №1. ПТВ на тестируемом аппарате 34 сек. МИЧ тробопластина на тест-полоске 1,0. МНО = (34 сек /13 сек × 1,0)1,0 = 2,62. Результат сертифицированной лаборатории: ПТВ 36 сек, МНО 2,86. Пациент №2. ПТВ на тестируемом аппарате 31 сек. МНО = (31 сек/13 сек × 1,0)1,0 = 2,38. Результаты сертифицированной лаборатории: ПТВ 32 сек, МНО 2,48.Вывод. Согласно представленным результатам, полученным в ходе тестирования разработанной портативной модели у пациентов, находящихся на варфаринотерапии, получены сопоставимые результаты ПТВ и МНО сертифицированной лабораторией.Prothrombin time (PTT) is a laboratory indicator that allows to evaluate the external pathway of blood coagulation (activity of factors I, II, V, VII and X). An INR indicator was introduced to standardize the results of the PTV test. INR = (patient’s PTT/PTT norm) ISI. The control of the INR is gaining popularity with the help of portable coagulometers. On the russian market are CoaguChek XS, qLabs Electrometer. The main problem is their high cost and high cost of operation. Russian scientists have long wondered about import substitution. However, in the literature there is no information on testing development. When developing an experimental model for measuring INR and PTV, we were guided by the results of the literary search in the scientometric databases Elibrary, Scopus, PubMed and WoS, taking into account the estimated cost of the developed model.Background. To conduct the initial stage of testing an experimental model with a comparison of the results obtained with the data of a certified laboratory.Materials and methods. We examined 70 patients (26 men and 44 women) taking «Warfarin». The material for measuring the experimental model was capillary blood. We used the qLabs® PT-INR Test Strip as a test system.Results. We obtained the Difference of the PTT of the tested model and the results of the certified laboratory ± 1–2 seconds. PTT prothrombin calibrator was 13 sec. Prothrombin ratio prothrombin calibrator was 1.0. Patient №1. PTT on the tested device 34 seconds. ISI troboplastin on test strip was 1.0. INR = (34 sec / 13 sec × 1.0)1.0 = 2.62. The result of a certified laboratory: PTT 36 sec, INA 2.86. Patient №2. PTT on the tested device 31 sec. INR = (31 sec / 13 sec × 1.0)1.0= 2.38. The results of the certified laboratory: PTT 32 sec, INR 2.48.Conclusions. According to the presented results obtained during testing of the developed portable model in patients on warfarin therapy, comparable results of PTT and INA were obtained with a certified laboratory

First Search for Axion-Like Particles in a Storage Ring Using a Polarized Deuteron Beam

Based on the notion that the local dark-matter field of axions or axion-like particles (ALPs) in our Galaxy induces oscillating couplings to the spins of nucleons and nuclei (via the electric dipole moment of the latter and/or the paramagnetic axion-wind effect), we performed the first experiment to search for ALPs using a storage ring. For that purpose, we used an in-plane polarized deuteron beam stored at the Cooler Synchrotron COSY, scanning momenta near 970 MeV/c. This entailed a scan of the spin precession frequency. At resonance between the spin precession frequency of deuterons and the ALP-induced EDM oscillation frequency there will be an accumulation of the polarization component out of the ring plane. Since the axion frequency is unknown, the momentum of the beam and consequently the spin precession frequency were ramped to search for a vertical polarization change that would occur when the resonance is crossed. At COSY, four beam bunches with different polarization directions were used to make sure that no resonance was missed because of the unknown relative phase between the polarization precession and the axion/ALP field. A frequency window of 1.5-kHz width around the spin precession frequency of 121 kHz was scanned. We describe the experimental procedure and a test of the methodology with the help of a radiofrequency Wien filter located on the COSY ring. No ALP resonance was observed. As a consequence an upper limit of the oscillating EDM component of the deuteron as well as its axion coupling constants are provided.Comment: 25 pages, 24 figures, 7 tables, 67 reference

Modelling of layer-by-layer metal removal in the digital twin of the round grinding process performed on CNC machines

Parts’ processing on circular grinding machines is carried out according to the specified stepwise control cycles of radial and axial feeds, which are laid down in the control program (CP). Despite the precise positioning systems, modern CNC circular grinding machines have a variable compliance of the technological system along the processing length. It causes different cutting depth and occurrence of various errors in dimensions of the diametric surface. Also, the dimensions error increases due to the fact that the processing of parts batch is carried out in unstable conditions and under the influence of different variable factors, which can include allowance fluctuation, blunting of the wheel grains, changes of the wheel diameter and the contact area of the wheel with the workpiece, etc. However, there are still no means of control developed CP, which include cycles of cutting modes, to ensure the accuracy of parts batch` processing. This article describes the digital twin (DT) of the circular plunge grinding with CNC, which allows simulating layer-by-layer metal removal during the whole grinding cycle by calculating the cutting depth on each workpiece revolution under various combinations of unstable processing conditions and variable compliance of TS. Modeling of layer-by-layer allowance removal is performed in several sections of the treated surface; these sections have different compliance. At the end of the grinding cycle in the DT the processing accuracy is estimated on the basis of the obtained values of radii dimensions in all sections of the processed surface. The introduction of DT allows speeding up the CP development, reduce the time of launching CP in production, and increase the productivity of circular grinding operations with CNC by optimizing the cycles of the cutting modes while ensuring the specified processing accuracy

Angular Rolling of the Hollow Flanges of Pipe Joints

The paper considers a three-stage technology for angular rolling of the pipe workpiece. This technology facilitates the expansion of the range of flange parts available by eliminating a number of drawbacks of the known methods of metal forming. In the presented paper, we analyze the results of numerical calculations and experiments, as well as the effective deformation values in blank material, using computer simulation in the DEFORM-3D software package. The results of the computer simulation were reached taking into account experimental studies of the rheological properties of copper alloy L68 in the form of a strain hardening curve using the Instron-8850 complex. The results of the ratio of basic geometric dimensions expanded the range of flange parts under investigation and allowed us to consider angular rolling technology with a variable angle of inclination of the rolling roll from a three-stage perspective, especially in small-scale production