Elliptic Curve Pseudorandom Bit Generator with Maximum Period Sequences

Pseudo-random number generator is an important mechanism for cryptographic information protection. It can be used independently to generate special data or as the most important element of security of other mechanisms for cryptographic information protection. The application of transformations in a group of points of elliptic and hypereliptic curves is an important direction for the designing of cryptographically stable pseudo-random sequences generators. This approach allows us to build the resistant cryptographic algorithms in which the problem of finding a private key is associated with solving the discrete logarithm problem. This paper proposes a method for generating pseudo-random sequences of the maximum period using transformations on the elliptic curves. The maximum sequence period is provided by the use of recurrent transformations with the sequential formation of the elements of the point group of the elliptic curve. In this case, the problem of finding a private key is reduced to solving a theoretically complex discrete logarithm problem. The article also describes the block diagram of the device for generating pseudo-random sequences and the scheme for generating internal states of the generator.

Evaluation of immune response of BALB/c to homeopathic solutions

Introduction: Biotherapics are medicines prepared from etiologic agents, following Brazilian Homeopathic Pharmacopeia. Influenza is a disease that affects thousands of people worldwide every year, motivating the development of new therapies. Aim: In this study, we developed two biotherapics from live/active influenza A virus, at 12x and 30x, and verified some immune response parameters in mice. Methodology: The biotherapic was administered to male SPF 4 weeks old Balb/c mice. The protocol was approved by the UFRJ Ethics Committee of Animal Use (Protocol DFBCICB 040). Animals were stimulated daily, blindly, with different homeopathic medicines, at 1% (V/V) for a maximum period of 42 days. Three homeopathic medicines were tested: biotherapic 30x containing active influenza A virus; biotherapic 12x containing active influenza A virus; and thymulin 5cH. The experimental groups were: Group A (5 animals) – administration of thymulin 5cH, Group B (5 animals) – administration of biotherapic 30x, Group C (5 animals) – administration of biotherapic 12x, Group D (5 animals) - administration of a water 30x, Group E (5 animals) - administration of a water 12x, Group F (5 animals) - control (without treatment). After 21 days of treatment, all animals were challenged subcutaneously with the viral hemagglutinin antigen at the concentration of 7 g/200L and monitored by further 21 days. After euthanasia, all animals were autopsied and the spleen was collected for weight and immunehistochemistry analyses. Additionally, peritoneal washing was done and a “pool” of samples from each group was prepared to be analyzed by flow citometry. Results: Mice treated with biotherapic 30x and thymulin 5cH showed similar profile, different from controls, in which a switch of lymphocytes/phagocytes proportion in the peritoneum was seen, followed by predominance of B1b cells in relation to conventional B and T cells (X2, p=0.005). Regarding to T cell population, in the contrary to control, CD4+ cells were predominant in relation to CD8+ cells (X2, p=0.0001). The immunehistochemistry revealed increase in the number of activated CD11b+ macrophages in spleen (p

Civil-legal terms in contractual system

Objective: to develop the “term” concept in the contract system legislation and to identify the features of terms calculation, taking into account the wording of the Federal Law “On the contract system in the field of procurement of goods, works, and services for state and municipal needs” of 02.07.2021.Methods: general scientific and specific scientific research methods are used in the work.Results: the legislation on the contract system does not register the “term” concept, but establishes it in all procedures and for all participants of the contract system. Terms violation entails administrative liability for both legal entities and officials. The entire logistics of procurement activities is connected with terms. As a result of the study, the following features related to terms in the contract system were identified: a) the terms calculation in the contract system in the field of procurement of goods, works, and services for state and municipal needs must be carried out in accordance with Chapter 11 of the Civil Code of the Russian Federation; b) Monday to Friday, except for federal official holidays, as well as other non-working days established by the authorities of the Russian Federation, should be considered working days; c) taking into account the high administrative responsibility for these offenses, if possible, to add to the established minimum and to subtract from the maximum period at least one day for unforeseen technical failures, in addition to the calculated period; d) in the legal structure “from the day following the day”, when establishing the maximum preventive terms in the law, to calculate the terms from the day of the event, the minimum preventive terms – from the day following the specified event; e) in some cases, as, for example, when concluding a contract, the customer should not only comply with all the terms of the formula “not more”, but also plan so that at the last stage there is no contradiction between “not more” and “not less”; f) the calculation of the terms provided by Law for the placement of electronic documents and information in the UIS starts from the moment they are placed in the UIS. Individual documents are placed in the UIS through the Treasury, the territorial body of which has the right to form notifications about the passage of control of these objects of control during the next working day. At that, the placement of control objects in the UIS will be carried out on the next working day from the date of their referral for control to the appropriate Treasury body.Scientific novelty: the article for the first time examines the norms and rules for calculating the terms stipulated in the Federal Law “On the contract system in the field of procurement of goods, works, and services for state and municipal needs” as amended on 02.07.2021, and analyzes regulatory legal acts in the field of procurement that come into force on January 1, 2022.Practical significance: the main provisions and conclusions of the article can be used in scientific, pedagogical and law enforcement activities when considering issues related to the calculation of terms in the field of procurement.

WRONGFUL ARREST: A BRIEF SURVEY OF THE IMPACT OF THE CONSTITUTION IN RECENT CASE LAW

In recent times there has been a proliferation of press reports about ordinary, law-abiding citizens who suffered the indignity and inconvenience of a wrongful (unlawful) arrest at the hands of officers of the South African Police Service or Metro Police Services. According to the most recent of these reports, this increase in the incidence of wrongful arrests have even resulted in deliberations between members of the Law Society of the Northern Provinces and the top management of the SAPS, in which the latter undertook to pay special attention to the training of police officers in order to better the present state of affairs. It is not far-fetched to describe thepresent situation on the ground in respect of wrongful arrests as epidemic. In recent interviews with attorneys who have been representing clients in wrongful arrest claims against the Minister of Safety and Security, the present writer was told about certain standard practices regarding arrests: it would seem that it is a favourite practice among certain police officials to arrest suspects on a Friday, or even a Thursday afternoon, in order to prolong the normal 48-hour maximum period of detention before bringing an arrestee before court. Furthermore, metro police spokespersons often announce, at the beginning of some road-safety drive or crack-down on traffic offenders, that certain types of offenders will, without exception, be arrested. The worst recent example recounted to the author of lamentable conduct in this context on the part of a high-ranking police official concerns an order issued on a Friday afternoon in which the officers under his command were ordered to endeavour arresting more persons of a specific ethnic group, seeing that the weekend population of the police cells under his command did not reflect the demographics of his jurisdiction!

Sedimentological evidence for seiching in a swell-dominated headland-bay system: Table Bay, Western Cape, South Africa

Table Bay, South Africa, is a typical headland-bay system with a shoreline that can be described by a logarithmic spiral. A peculiarity and unique feature of Table Bay is the juxtaposition of Robben Island opposite its headland. As a consequence, the bathymetry defines an ellipsoidal basin which was postulated to potentially resonate in the form of long-period standing waves (seiches). One aim of this study, therefore, was to investigate whether any evidence for such resonant oscillations could be detected in the geomorphology and sediment distribution patterns. Indeed, the ellipsoidal shape of the basin can be framed by two converging log-spirals with their centres located opposite each other, one off Robben Island and the other on the Cape Town side of the bay. The so-called apex line, which divides the two spirals into equal parts is aligned SW–NE, i.e. more or less parallel to the direction of ocean wave propagation. The distribution patterns of all sedimentary parameters were found to be characterised by a strikingly similar trend to either side of the apex line. This supports the hypothesis that the basin of Table Bay appears to resonate in the form of a mode 1 standing wave, with the node positioned above the apex line in the centre of the bay. The maximum period of such a standing wave was calculated to be around 37 min. The study demonstrates that large-scale sediment distribution patterns can reveal the existence of specific hydrodynamic processes in coastal embayments. It is recommended that this phenomenon be investigated in greater detail aimed at verifying the existence of resonant oscillations in Table Bay and, in the event, at establishing its precise nature and trigger mechanism.

Small Claim Court as the Alternative of Bad Credit Settlement for Legal Certainty of the Economic Actors

This article aimed to analyze the problem of legal cases accumulation, especially default on credit contracts in court. It also analyzes the effectiveness of implementing a small claim court in contract default and the independence of a single judge in handling cases through the small claim court mechanism. Small claim court also to offer a breakthrough in the settlement of bad loans related to contract defaults to reduce the burden on courts in Indonesia and provide legal certainty to business actors. The sole judge also examine, resolve and decide on inheritance cases in a fast and efficient process to issue a fair decision for all parties. This normative study was carried out using statutory, case, comparative law, and analysis content approaches. The research results showed that the filing of small claim court increased 10 times from 2015 to 2020, with the plaintiffs dominated by banks in bad credit cases. A small claim court provides benefits the bank and the customer because it speeds up the settlement of the plaintiff's money in a bad credit case with a case value of not more than 500 million, especially for microloans in a maximum period of 25 days. Furthermore, the latest regulation of 2019 concerning small claim court gives judges the authority to confiscate guarantees and conduct auctions to carry out forced executions through the Court Execution Auction process.

Electrocardiographic abnormalities in medically screened German military aircrew

Background A resting electrocardiogram (ECG) is a well-tolerated, non-invasive, and inexpensive test for overt electrical signs of cardiac pathology and is widely used in the screening of aircrew and other high-hazard occupations. Given the low number of pathological results leading to disqualification or restriction however, there is an ongoing debate as to how often screening ECGs should be performed in different age groups. Methods We restrospectively analyzed 8275 resting 12-lead ECGs registered between 2007 and 2020 in the German Air Force Centre of Aerospace Medicine. Findings were categorized according to consensus recommendations published by the NATO Working Group on Occupational Cardiology in Military Aircrew, based on ECG screening criteria published for athletes which were used at the time of registration. Age, sex, height, weight, and body mass index of the probands were also captured. Additionally, 4839 pilot and non-pilot aircrew members were analyzed longitudinally over a maximum period of 13.4 years. Results Out of all the ECGs only 18 revealed findings requiring further investigation, and only one individual was temporarily disqualified because of a ventricular pre-excitation (delta wave) as a sign of an antegrade conducting accessory pathway. The longitudinal analysis of 25,829 ECGs revealed 28 abnormalities requiring further investigation, and only two ECG findings (in probands aged 48.8 and 59.1 years) led to temporary, or permanent disqualification. In a third case, the ECG showed signs of a myocardial infarction, which was already known from the proband’s history. Conclusions Initial ECG screening for asymptomatic aircrew revealed extremely low numbers of individuals requiring further investigation in our cohort. This would appear to justify an initial screening ECG and follow-up ECGs at certain intervals starting at a certain age, but routine ECG screening of applicants in professions with a higher risk tolerance or frequent, e.g. annual, follow-up ECGs in younger aircrew is not supported by our data because of the minimal yield of ECG findings requiring further investigation.

Implikasi Ketatanegaraan Presidential Term Limit menurut Pasal 7 UUD NRI 1945 sebelum Amendemen terhadap Presidential Continuism Masa Orde Baru

Presidential term limit according to Article 7 of the 1945 Constitution (UUD) before the amendment should not be interpreted as only one measure namely in terms of quantity (limits on the term of office and the maximum period of office in office), but must regulate in terms of quality (legal norms and political ethics in commitment creating a democratic and competent government). As a result, every President in power will endeavor to presidential continuation by changing, avoiding, reinterpreting, amending the constitution or even presidential term limit in article 7 of the 1945 Constitution before the amendment. In the constitutional order, it will have implications for every President in power to form an authoritarian government and reduce democracy, abuse of the President's power to hold office continuously, give birth to an elected president who is incompetence in government administration, and creates stagnation of political regeneration.

Features of the Process of Obtaining Steel 08H14N5M2DL in the Open Induction Furnace IST-0.16

One of steel 08H14N5M2DL scopes in the industry is an aircraft industry, to be exact, production of racks of the chassis for airplanes and helicopters which test cyclic types of loadings (take-off/landing). Despite the margin of safety which is put at the design of the aircraft, an important role plays, both quality of the material and its ability to save the mechanical properties during all assigned resource for the aircraft. Therefore the development of necessary conditions of production of steel under which the highest mechanical properties and also the ability to save them on the maximum period will be received becomes relevant and today. Work purpose: Identification and prevention of the most significant negative factors having an impact on mechanical properties of steel 08H14N5M2DL in the course of its receiving. In the work, 257 melting of steel of VNL-3 brand in the open IST-0.16 induction furnace with lining from a ground, magnesite brick is investigated. Methods of research are control of the content of austenite and existence of δ - ferrite in structure there were by measurement of values of a magnetic flux density cold and hot tests on the IFSS-1 device and also calculations of the number of products of wear, the solubility of nitrogen in steel VNL-3 and saturation nitrogen. It is revealed that negative impact on mechanical properties of VNL steel – 3 is rendered by nonmetallic inclusions, the maintenance of δ-ferrite and nitrogen. It is established that for stabilization of mechanical properties of steel, aging temperature after tempering in 500 °C allows to support and save steady indicators of mechanical properties. The fact that δ the ferrite exception of solid steel will allow reducing the oxygen content in it not less, than for 0.019% is confirmed owing to what iron crystallizes in γ-phase, passing δ-modification. The presented results confirm prospects of the developed approach in receiving the high-quality steel intended for use in the aviation industry.