A Privacy Protection Method of Lightweight Nodes in Blockchain

Aiming at the privacy protection of lightweight nodes based on Bloom filters in blockchain, this paper proposes a new privacy protection method. Considering the superimposition effect of query information, node and Bloom filter are regarded as the two parties of the game. A privacy protection mechanism based on the mixed strategy Nash equilibrium is proposed to judge the information query. On this basis, a Bloom filter privacy protection algorithm is proposed when the probability of information query and privacy, not being leaked, is less than the node privacy protection. It is based on variable factor disturbance, adjusting the number of bits’ set to 1 in the Bloom filter to improve the privacy protection performance in different scenarios. The experiment uses Bitcoin transaction data from 2009 to 2019 as the test data to verify the effectiveness, reliability, and superiority of the method.

The role of Arabidopsis thaliana photoreceptors in regulating the process of state transitions

The initial formation of the photosynthetic apparatus in plants occurs during photomorphogenesis. The red/far-red (phytochromes) and blue (cryptochrome) light protein-photoreceptors play the most important role in photomorphogenesis initiation and regulation. The exited phytochrome and cryptochrome molecules can interact with transcription factors, changing the expression of nuclear genes, which encode the proteins of the plant photosynthetic apparatus. Since light is a variable factor, plants have developed appropriate adaptation mechanisms, including their photosynthetic apparatus protection. The mechanism of state transitions ensures a rapid adaptation of the photosynthetic apparatus. This adaptation mechanism increases the adsorption efficiency under current light conditions and prevents intensive generation of active forms of oxygen in chloroplasts, which leads to photo-oxidation and even cell death. This work aims to determine the role of photoreceptors - phytochromes A and B, as well as cryptochrome 1 and 2 - in regulating the process of state transitions in the Arabidopsis thaliana model plant. Arabidopsis mutants with the defects on A and B phytochromes and cryptochrome 1 and 2 genes were used as the research objects. The blue native electrophoresis in polyacrylamide gel was used to visualise state transitions. It was found that these photoreceptors had no direct effect on the redox-regulation of the state transitions mechanism in Arabidopsis. Presumably, these photoreceptors protect the photosynthetic apparatus from excessive light not by regulating the state transitions but indirectly, through regulating the chlorophyll, carotenoid and antioxidant components content.

A Form of TV News as Factor of Achieving Validity Effect

The problem of validity of news is a topical matter. The article is an attempt to comprehend the phenomenon of validity in TV news programs. According to the author’s hypothesis, the form in which the news is delivered influences the validity effect and may be considered a variable factor. The study is based on a normative model showing dependency of validity on the set of elements in the form of a news item. A frequency analysis aimed at determining available forms of news broadcasting involved 1 600 news items of five news channels (Russia24, Moscow24, OTR, Mir and Euronews) in the period of 01.02.2020-10.02.2020. The results show that although the newsrooms use different combinations of ways and elements in order to achieve validity effect, there are some common and most often used narrative techniques. Besides, modern news programs, regardless the editorial policy, lack the author’s point of view and emotional coloring.

FORMULA UPAH BAGI PENGEMUDI TRUK BAHAN BAKAR MINYAK

ABSTRACT This study tries to offer a formula for calculating a decent wage for fuel truck drivers, especially those transporting fuel oil. The meaning of the word decent is related to meeting the needs of a reasonable life, considerations of driver productivity and safety as well as compliance with applicable wage provisions. The data is based on the monthly salary report at XYZ Company, the results of interviews, and field observations. The multiple linear regression method is used to determine what factors affect the number of wages and the value of the coefficient generated from each variable/factor as the basis for formulating the formula. Related literature review and analysis of applicable wage provisions (wages and overtime pay) are used to strengthen the variables raised in the wage formula. The results showed that several variables did not have a significant effect on wage formation, and the resulting calculation model was able to produce a decent wage level. Keywords: wage formula, minimum wage provisions, overtime pay, fuel truck driver.

Optimal parameters of physical and mechanical properties of sawdust concrete

The purpose of the conducted experimental studies is to examine the effect of various influences on the object of study. These effects are called factors. Some of them vary while examining of the object and then they are called variable factors. Each factor takes one or more values in the experiment and then they are called factor levels. The set of values of this factor is called range of factor values – the smallest interval, where are all the values accepted by this factor in the experiment. According to GOST 19222-84, the dependence of the physical-mechanical characteristics of sawdust slag concrete (grade M10) on the specific gravity (share) of wet sawdust of coniferous species and ash-slag mixture in the composition was studied. Regression analysis was used to build a mathematical model of the process with quantitative factors, to verify its adequacy, and to assess the impact of each variable factor on the process. To obtain regression dependencies, a composite second-order B-plan was implemented.

Possibility of using sawdust in sawdust concrete

According to GOST 19222-84, the dependence of the physical-mechanical characteristics of sawdust concrete on the specific gravity of wet sawdust of coniferous species and ash-slag mixture in the composition was studied. A one-factor experiment was carried out in the laboratory of the Department of Reproduction and Processing of Forest Resources, Federal State Budgetary Educational Institution of Higher Education “Bratsk State University” in order to justify the specific share of wet sawdust in the composition of sawdust concrete, to determine the necessary number of observations and repetitions of the experiment. As a variable factor, the proportion of wet sawdust of coniferous species in the composition is assumed. The proportion varies from 17% to 37% in increments of 5%. The applicability of wet sawdust of coniferous species for the production of heat-insulating building materials is established. Samples of building materials were made; the necessary laboratory tests were carried out. The range of variation of sawdust content in the composition for sawdust concrete is determined (from 17 to 32%).

INFLUENCE OF MUNICIPAL SOLID WASTE COMPOST ON YIELD OF TOMATO- APPLIED SOLELY AND IN COMBINATION WITH INORGANIC FERTILIZER WHERE NITROGEN IS THE ONLY VARIABLE FACTOR

Municipal solid waste compost (MSWC) is considered as one of the prominent fertilizers that improve soil health and productivity. To evaluate the effects of MSWC on plant growth, an experiment was conducted by using sole MSWC and with a combination of inorganic fertilizer. The sole MSWC was applied at the rate of 0, 5, 10, 15 t ha-1. In case of MSWC with inorganic fertilizer, MSWC was applied equally (5 t ha-1) and phosphorus and potassium fertilizers were applied at 100 and 50 kg ha-1, respectively. Nitrogen was the only variable nutrient. Nitrogen was applied three different doses (25, 50 and 100 kg ha-1) along with control. Tomato (Solanum lycopersicum L.) was grown as experimental plant and maximum yield (72.7±6.3 t ha-1) of tomato was found when sole MSWC was applied at 15 t ha-1 and was significantly higher than other treatments. When MSWC was applied in combination with inorganic fertilizer, the combination 5 t ha-1 MSWC +100 kg N ha-1 +100 kg TSP ha-1 +50 kg MoP ha-1 produced maximum yield (79.0±3.2 t ha-1). So, application of sole MSWC in soil enhanced the productivity of soil and side by side, MSWC in combination with inorganic fertilizer reduced the volume of MSWC application.

Analytical solutions of radiative transfer equations in accretion discs with finite optical depth

ABSTRACT The main purpose of this paper is to obtain analytical solutions for radiative transfer equations related to the vertical structure of accretion discs with finite optical depth. In the non-grey atmosphere, we employ the optical-depth dependent Eddington factor to define the relationship between the mean intensity and radiation stress tensor. Analytical solutions are achieved for two cases: (i) radiative equilibrium, and (ii) a disc with uniform internal heating and both cases are assumed to be in local thermodynamical equilibrium (LTE), too. These solutions enable us to study probable role of scattering and disc optical depth on the emergent intensity and other radiative quantities. Our results show that for the first case, the surface value of mean intensity with constant Eddington factor is three times larger than that with variable factor. Moreover, scattering has no role in the vertical radiative structure of discs with the assumptions of the first case. On the other hand, for the second case, we encounter reductions in all radiative quantities as the photon destruction probability decreases (which is equivalent to increasing scattering). Furthermore, for both cases with total optical depth less than unity, the outward intensity towards the polar direction becomes less than that from the edges of disc which is contrary to limb-darkening. At the end, we apply our results to find the spectrum from accretion systems, based on two dynamical models. Consequently, we can see that how the total optical depth varies with frequency and causes remarkable changes on the emergent spectra.

Discrete Dynamics-Based Parameter Analysis and Optimization of Fuzzy Controller for Inverted Pendulum Systems Based on Chaos Algorithm

In order to reduce the difficulty in the selection of the quantization factor and the proportion factor in the general fuzzy controller, a controller with the novel algorithm based on the Logistic chaotic variable is proposed in this paper. By introducing the chaotic variable factor into the global search, the suboptimal solution can be obtained and the optimization interval reduced. The global optimal solution is obtained in the vicinity of the suboptimal solution under an integrated performance index. Finally, the control scheme is applied to the control of a double inverted pendulum model. The simulated results show the effectiveness of the proposed method.