Rank distribution of wood removal from forest land

The article is devoted to the problem of modeling the speed of movement of timber trucks in various natural conditions of the Krasnoyarsk Territory. The results were obtained on the basis of multiple observations of the speed of timber trucks on various sections of forest roads. The results presented in the article are based on the selection and analysis of factors that can presumably have any effect on the speed of movement of timber trucks when hauling timber. The article presents the results of creating a multifactorial dependence for calculating the speed of timber transport. The analysis of the quality factor of each of the factors is carried out by the rank distribution of the obtained regularities and by compiling a rating of the conducted field experiments on the multivariate analysis of timber removal. The calculations and modeling were carried out in the CurveExpert-1.40 software environment and the Microsoft Office Excel software package in the RANK environment. Using the CurveExpert-1.40 software environment, the adequacy of the regularities of the rank distributions of the factors of timber removal from the forest area was assessed by the correlation coefficient. As a result, we obtained models of the total and private influence of factors from themselves (monar ratio) by ranks, which were placed before modeling for each factor in the direction of changing the level of their preference for factors from worse to better. When analyzing the quality factor of experiments, all analyzed factors received a correlation coefficient above 0,97, which corresponds to the level of adequacy of the «strongest factor relationship». This made it possible to add up the ranks of all 35 factors and, by the sum of the ranks, reveal the rating in the system of factors. The paper presents the mathematical dependences of rank distributions and graphs constructed from them. As a result of modeling, regression dependences were obtained and the quality factor of the values of the factors used by the authors in the course of production experiments was proved.

Blind Interleaver Parameters Estimation Using Kolmogorov–Smirnov Test

The use of error-correcting codes (ECCs) is essential for designing reliable digital communication systems. Usually, most systems correct errors under cooperative environments. If receivers do not know interleaver parameters, they must first find out them to decode. In this paper, a blind interleaver parameters estimation method is proposed using the Kolmogorov–Smirnov (K–S) test. We exploit the fact that rank distributions of square matrices of linear codes differ from those of random sequences owing to the linear dependence of linear codes. We use the K–S test to make decision whether two groups are extracted from the same distribution. The K–S test value is used as a measure to find the most different rank distribution for the blind interleaver parameters estimation. In addition to control false alarm rates, multinomial distribution is used to calculate the probability that the most different rank distribution will occur. By exploiting those, we can estimate the interleaver period with relatively low complexity. Experimental results show that the proposed algorithm outperforms previous methods regardless of the bit error rate.

Journalistic Denial of Death during the Very First Traumatic Period of the Italian COVID-19 Pandemic

Exactly one year ago, between February and March 2020, the COVID-19 infection went from an epidemic confined to China to a worldwide pandemic that was particularly lethal in Italy. This study examined the media accounts during that period by analysing the representation of death-related constructs in Corriere della Sera, the most widely read newspaper in Italy. A textual and thematic analysis of articles published between period A (epidemic: 23 January–22 February 2020) and period B (pandemic: 23 February–31 March 2020) was conducted using Nvivo-11. A total of 141 articles comprising 48,524 words were collected. The most utilised words and meanings linked to COVID-19 were computed. In the rank distribution, ‘China’ and ’virus’ were the terms most frequently used in both periods. The terms ‘death’ and ‘dead’ were completely absent in period A and appeared in the 535th position in period B. The term ‘dead’ was used primarily to indicate the number of deceased. From a Terror Management Theory perspective, it is possible that the minimal reference to death-related issues was a reflection of death denial and a manifestation of efforts to deny death to manage terror. These findings highlight the ambiguities and ambivalence surrounding any issue pertaining to death; on the one side, undue alarmism may provoke exaggerated reactions, such as moral panic, while on the other denial-based messages that minimise references to mortality may reduce safe behaviour during a pandemic.

Journalistic Denial of Death During the Very First Traumatic Period of the Italian SARS-CoV2 Pandemic

Exactly one year ago, between February and March 2020, the SARS-CoV2 infection went from an epidemic confined to China to a worldwide pandemic that was particularly lethal in Italy. This study examined media accounts during that period by analysing the representation of death-related constructs in Corriere della Sera, the most widely read newspaper in Italy. A textual and thematic analysis of articles published between period A (epidemic: 23 January–22 February 2020) and period B (pandemic: 23 February–31 March 2020) was conducted using Nvivo-11. A total of 141 articles comprising 48,524 words was collected. The most utilized words and meanings linked to SARS-CoV2 were computed. In the rank distribution, ‘China’ and ’virus’ were the terms most frequently used in both periods. The terms ‘death’ and ‘dead’ were completely absent in period A and appeared in the 535th position in period B. The term ‘dead’ was used primarily to indicate the number of deceased. From a Terror Management Theory perspective, it is possible that the minimal reference to death-related issues was a reflection of death denial and a manifestation of efforts to deny death to manage terror. These findings highlight the ambiguities and ambivalence surrounding any issue pertaining to death; on one side, undue alarmism may provoke exaggerated reactions, such as moral panic, while on the other denial-based messages that minimize references to mortality may reduce safe behaviour during a pandemic.

Rank analysis in evaluating the validity of olympiad tasks

The rank analysis (cenological approach) based on a strict mathematical apparatus allows diagnosing the state of educational systems and processes on a scientific objective basis. The rank analysis base is applying the law of hyperbolic rank distribution of objects in systems-cenoses, which is a refined Pareto law 20/80 (Pareto-Kudrin law). Using of rank analysis to evaluate the validity of the olympiad tasks of the all-Russian Multidisciplinary Engineering Olympiad «Star», the authors demonstrate the necessity of implementing rank analysis in the practice of education quality management. They show that this law is important and appropriate to apply in the education quality management. Optimization of educational systems and processes using rank analysis consists in eliminating anomalous deviations from the hyperbolic law, which is possible only with graphical visualization of the rank distribution and its approximation. The rank distribution graph provides visibility and insight into the nature of the rank decrease. Shortcomings in the content of olympiad tasks (as well as tests), leading to a deterioration of their validity and reliability, are shown the form of distortions of the hyperbolic graph (humps, depressions, tails, degeneration of the hyperbola into other dependencies). The rank analysis allows identifying objectively several levels of validity of olympiad or test tasks carrying on a scientific basis. The paper demonstrates graphs of run distributions illustrating examples of high (natural science) and below the average (history) validity of olympiad tasks. Educational systems are cenoses, ranking objects in them are students, classes, schools, etc., and their ranked parameters are academic performance, rating in points, performance indicators, etc. Using simple mathematical tools of rank analysis and computer software bring the technologies to assess the education quality to a higher level meeting the challenges of the time.

FORECASTING ELECTRIC POWER CONSUMPTION OF TECHNOCENOSIS OBJECTS ON THE BASIS OF VALUES FROM TRANSFORMED VECTOR RANK DISTRIBUTION

В докладе представлен метод прогнозирования электропотребления на основе векторного рангового анализа. Отличительной особенностью векторного рангового анализа является возможность представления рангового параметрического распределения в векторном ранговом пространстве, которое характеризуется достаточным набором показателей. На основе показателей векторного рангового анализа существует возможность исследовать как статическое состояние электросетевого комплекса, так и динамическое. Одним из них является ранговый фазовый угол. Полученное значение рангового фазового угла используется для прогнозирования. Экспериментальная проверка метода показала, что показатели прогнозирования электропотребления на основе векторного рангового анализа значительно лучше, т.е. точность прогноза выше. В связи с этим, для реализации среднесрочного прогнозирования электропотребления на объектах РЭСК целесообразно выбрать метод на основе векторного рангового анализа

Pooling Rankings to Obtain a Set of Scores for a Composite Indicator of Erasmus + Mobility Effects

In this paper, we study how to assign weights to a set of evaluations obtained at the end of an international mobility experience in order to aggregate them into a composite indicator. The mobility experience was evaluated by three categories of actor: the participant; the school or company sending the participant; and the school or company hosting the participant. We estimated the weights starting from the assessors’ mutual evaluations of the beneficiaries of the mobility experiences. In particular, the aim of the paper was to compare two strategies for estimating the weights: (1) a weighted function of the univariate rank distribution of frequencies; and (2) the normalised elements of the first eigenvector of the dominance matrix computed by mediating the actors’ dominance matrices derived from the rankings of mobility beneficiaries. Variants of the two strategies were also introduced. Even though each strategy had different assumptions, the analyses produced several important findings. First, the optimum weighting model depends on the loss function used to evaluate the quality of the results. In particular a between-ranking variability function favours both univariate and unweighted multivariate models, while a bias-based function favours weighted multivariate models. Second, in both univariate and multivariate analyses, the application of rank-order-centroid and rank-reciprocal rules give more accurate results than both linear and exponential rules.

Influence of Selection and Genetic Parameters of the Eco-genotype of Mother Cows of the Aberdeen Angus Breed on the Breeding Value of Offspring

Основной целью настоящего исследования являлось определение влияния селекционно-генетических параметров эко-генотипа коров-матерей абердин-ангусской породы на племенную ценность потомков. Экспериментальная часть работы выполнялась в условиях одного из предприятий Курганской области. Исследования проводились на коровах-матерях (n = 20) 5-летнего возраста и потомстве – бычках (n = 20) линии быка-производителя Бисмарка 5682 австралийской селекции и их аналогов – коровах и бычках линии быка-производителя Дизайна 1015 отечественной репродукции. Бычки проходили оценку по собственной продуктивности. В результате исследований установлено, что коровы линии Дизайна имели достоверное превосходство над представительницами линии Бисмарка по живой массе на 9,8% (Р < 0,001), по высоте в крестце – на 4,1% (Р < 0,001) и по молочности – на 2,4% (Р > 0,05). По результатам испытания бычков по собственной продуктивности с 8 до 15 месяцев выявлено достоверное преимущество бычков генотипа Дизайна относительно потомства Бисмарка по живой массе на 4,3% (Р < 0,001), по интенсивности среднесуточного прироста – на 7,4% (Р < 0,001), по выраженности типа телосложения – на 8,2% (Р < 0,01). Ранговое распределение потомков по комплексному индексу выявило превосходство линии Дизайна 1015 отечественной селекции. При этом средние величины изучаемых признаков потомков обеих линий превосходили своих сверстников в среднем по стаду. Комплексная оценка быков-производителей по качеству потомства с учётом генотипа матерей позволит более качественно выявлять продолжателей родоначальников, обладающих лучшей способностью совершенствования стада при их линейном разведении. The main goal of this research was to determine the influence of the selection and genetic parameters of the eco-genotype of mother cows of the Aberdeen-Angus breed on the breeding value of offspring. The experimental part of the work was carried out in the conditions of one of the enterprises of the Kurgan region. The researches were carried out on five-year-old mother cows (n = 20) and offspring – small bulls (n = 20) of the Bismarck servicing bull line 5682 of Australian breeding and their analogues – cows and small bulls of the Design servicing bull line 1015 of domestic reproduction. Small bulls were evaluated for their own productivity. As a result of researches it was found that cows of the Design line had a reliable superiority over representatives of the Bismarck line in live weight by 9.8% (P < 0.001), in height in the rump bone – by 4.1% (P < 0.001) and in milking capacity – by 2.4% (P > 0.05). According to the results of testing small bulls on their own productivity from 8 to 15 months, a reliable advantage of small bulls of the Design genotype relative to Bismarck's offspring on live weight was revealed by 4.3% (P < 0.001), on the intensity of the daily live weight gain – by 7.4% (P < 0.001), on the severity of the physique type – by 8.2% (P < 0.01). The rank distribution of offspring according to the complex index revealed the superiority of the Design line 1015 of domestic selection. Moreover, the average values of the studied features of offspring of both lines exceeded their herdmates on average in herd. A comprehensive assessment of servicing bulls on the quality of offspring taking into account the genotype of mothers will better identify the successors of the ancestors who have the best ability to improve the herd during their linear breeding.