Using digital technologies in refereeing to correctly identify the winner in judo competitions

Purpose: to analyze the impact of the use of digital technology in judging to correctly identify the winner in judo competitions. Material and methods. The following methods were used during the research: theoretical analysis and generalization of literature sources and data of the Internet, analysis of video recording, methods of mathematical statistics. Results: based on the recordings of 42 fights of the final block of the European Championship and the Ukrainian Junior Judo Championship on video hosting (You Tube), the analysis of the impact of video replays on the referee's decision was conducted to correctly identify the winner in the competition. In 22 bouts of the European Championship and in 24 bouts of the Ukrainian Championship, the referees made decisions that did not require revision or change. In the other 20 fights of the European Championship and in 18 fights of the Ukrainian Championship, video replays were used. A comparison of the average rates of fights in which digital replays were used or not used with the help of digital technologies showed a statistically significant difference in the performance of refereeing at the European Championship and the Ukrainian Judo Championship among juniors (<0,05). Since t (0,051) < tgr (1,98) the analysis of the refereeing of the European Championship and the Ukrainian Junior Judo Championship can be considered statistically significant. As a percentage of the total number of 42 fights, of which 20 fights – 47,6 % of international judges use video replays and 22 fights – 52,3 % of international judges did not use video replays. Analyzing the championship of Ukraine with a total of 42 fights, of which 18 fights – 42,8 % of judges use video replays and 24 fights – 57,1 % of judges did not use video replays. Conclusions. Analysis of existing digital technologies used in judo refereeing has revealed a set of programs that assist in the competition. The use of digital technologies provides an opportunity to improve the quality of refereeing at various ranks of the competition. The percentage of using video views and the percentage without video views at the European Championship and the Ukrainian Championship is almost the same. This speaks to the quality of judging at these events. This is because the refereeing of the final block allows more qualified judges who did not make mistakes during the refereeing or these mistakes were minimal. Keywords: judo, digital technologies, video replays, YouTube, European Championship, Ukrainian Championship, judges.

Integration of Dual Border Effects in Resource Estimation: A Cokriging Practice on a Copper Porphyry Deposit

Hierarchical or cascade resource estimation is a very common practice when building a geological block model in metalliferous deposits. One option for this is to model the geological domains by indicator kriging and then to estimate (by kriging) the grade of interest within the built geodomains. There are three problems regarding this. The first is that sometimes the molded geological domains are spotty and fragmented and, thus, far from the geological interpretation. The second is that the resulting estimated grades highly suffer from a smoothing effect. The third is related to the border effect of the continuous variable across the boundary of geological domains. The latter means that the final block model of the grade shows a very abrupt transition when crossing the border of two adjacent geological domains. This characteristic of the border effect may not be always true, and it is plausible that some of the variables show smooth or soft boundaries. The case is even more complicated when there is a mixture of hard and soft boundaries. A solution is provided in this paper to employ a cokriging paradigm for jointly modeling grade and geological domains. The results of modeling the copper in an Iranian copper porphyry deposit through the proposed approach illustrates that the method is not only capable of handling the mixture of hard and soft boundaries, but it also produces models that are less influenced by the smoothing effect. These results are compared to an independent kriging, where each variable is modeled separately, irrespective of the influence of geological domains.

Financial Risks in the Conditions of Unstable Market Economy

The necessity and significance of financial risks, which are a constant factor in the activity of any enterprise, are substantiated. It is established that for a broader understanding of the essence of financial risk it is necessary to consider it as a cumulative risk of the enterprise. The growing impact of financial risks on the results of financial and economic activities is associated with the uncertain economic situation, the instability of financial market conditions, the rapid introduction of new financial technologies and financial instruments, expanding the scope of financial relations of the enterprise. A system of financial ratios has been formed to quantify the risk of enterprises of different sizes, namely for large, medium and small enterprises, which most accurately reflect the current financial situation. Has been proven that the growing pressure of the crisis and insecurity on the part of the state will lead to the transition from the crisis in which enterprises are today, to a state of economic bankruptcy. It is established that the first place among the blocks of financial coefficients of risk assessment of enterprises is occupied by the block of business activity, then the block of profitability indicators, the block of liquidity indicators, the final block of capital structure. For each of the defined blocks the directions of increase, or optimization that will provide financial stability of the enterprise are presented.

SUBSTITUTES FOR MOLASSES AND CEMENT IN UREA-MOLASSES BLOCKS FOR RUMINANT ANIMALS

The first of two experiments was conducted to substitute cassava starch for molasses at levels of between 0 and nutrient blocks are discussed. 100% in urea-molasses blocks in six treatments. In a second experiment, of Gliricidia sepium, Leucaena leucocephala Gmelina arborea and cement were included at 15% levels respectively as substitutes to cement as feed block binders. A fifth treatment combined cement and the various leaves as binders. Parameters monitored included block hardness, stability in water, colour, storability, nutrient quality and cost. Results showed that the blocks dried within 3 - 7 days and the weights of the blocks progressively decreased (P<0.01) within the drying period, Final block weights were 88 to 97.5% of initial weights. The crude protein contents of the 100% molasses blocks were lower while the fibre contents of the leaves - substituted blocks were higher (P>0.05) between 25 and 28% CP. The blocks were strong and did not dissolve in water for 3 to 5 days. Increasing levels of cassava starch substitution made the blocks harder, Block colours varied from dark brown to dirty white. Use of leaves as binders reduced the cost of the blocks by as much as 20%. Blocks stored better when the sides of the plastic mould were lined with cellophane paper. The cassava substituted blocks stored up ic 9 months without moulding. Gliricidia sepium leaves, however, served as a good binder just like the other two leaves types used. aThe implication of using cassava starch and browse leaves in urea-molasses multinutrient blocks are discussed.

Scalable Blockchain Protocol Based on Proof of Stake and Sharding

Blockchain – a distributed and public database of transactions – has become a platform for decentralized applications. Despite its increasing popularity, blockchain technology faces a scalability problem: the throughput does not scale with the increasing network size. Thus, in this paper, we propose a scalable blockchain protocol to solve the scalability problem. The proposed method was designed based on a proof of stake (PoS) consensus protocol and a sharding protocol. Instead of transactions being processed by the whole network, the sharding protocol is employed to divide unconfirmed transactions into transaction shards and to divide the network into network shards. The network shards process the transaction shards in parallel to produce middle blocks. Middle blocks are then combined into a final BLOCK in a timestamp recorded on the blockchain. Experiments were performed in a simulation network consisting of 100 Amazon EC2 instances. The latency of the proposed method was approximately 27 s and the maximum throughput achieved was 36 transactions per second for a network containing 100 nodes. The results of the experiments indicate that the throughput of the proposed protocol increases with the network size. This confirms the scalability of the proposed protocol.

Multilayer neural network synchronized secured session key based encryption in wireless communication

In this paper, multilayer neural network synchronized session key based encryption has been proposed for wireless communication of data/information. Multilayer perceptron transmitting systems at both ends accept an identical input vector, generate an output bit and the network are trained based on the output bit which is used to form a protected variable length secret-key. For each session, different hidden layer of multilayer neural network is selected randomly and weights or hidden units of this selected hidden layer help to form a secret session key. The plain text is encrypted through chaining , cascaded xoring of multilayer perceptron generated session key. If size of the final block of plain text is less than the size of the key then this block is kept unaltered. Receiver will use identical multilayer perceptron generated session key for performing deciphering process for getting the plain text. Parametric tests have been done and results are compared in terms of Chi-Square test, response time in transmission with some existing classical techniques, which shows comparable results for the proposed technique.

Personality Predictors of Driver Vengeance

The purpose of this study was to identify personality and individual difference measures related to driver vengeance, as measured by the Driver Vengeance Questionnaire (DVQ; Wiesenthal, Hennessy, & Gibson, 2000). There were 170 undergraduate students who completed paper-and-pencil questionnaires including the DVQ and measures of narcissism, impulsivity, and trait driver stress. A hierarchical linear regression predicting DVQ score revealed that being male (β = .25), narcissism (β = .19), and trait driver stress (β = .41) were significantly associated with vengeance. Impulsivity was significant in the third block of the regression but was not a significant predictor of vengeance in the final block. Interactions between gender and the individual difference measures were not significant. The final model accounted for 34% of the variance. Implications of the results and directions for future research are discussed.

Cadmium block of squid calcium currents. Macroscopic data and a kinetic model.

The mechanism of Cd2+ block of Ca2+ currents (ICa) was explored in squid neurons using whole-cell patch clamp. Control currents activated sigmoidally, more rapidly at more positive potentials, and did not inactivate significantly. External Cd2+ up to 250 microM reduced ICa reversibly. For small depolarizations, the current for a step of 10 ms increased to a maintained value, resembling the control; but for Vm greater than 0 mV, the increase was followed by a decrease, as Cd2+ block became greater. Final block was greater for larger depolarizations. At 0 mV the half-blocking concentration was 125 microM. Tail currents, measured as channels close, had an initial "hook" when recorded in Cd2+: currents increased transiently, then decreased. This suggests that Cd2+ escapes from some channels, which then conduct briefly before closing. Analysis of tail currents shows that Cd2+ does not slow channel closing. The data can be explained if Cd2+ is a permeant blocker of Ca2+ channels and if channels can close when occupied by Cd2+. Cd2+ permeates the channels, but binds transiently to a site in the pore, obstructing the passage of other ions (e.g., Ca2+). Dwell time depends on the transmembrane potential, becoming shorter for more negative internal potentials. A five-state model was used to simulate the steady-state and kinetic features. It combines a Hodgkin-Huxley type m2 gating scheme and a one-site Woodhull ionic blockage model for a permeant blocker and includes a closed blocked state. To fit the data, the binding site for Cd2+ had to be near the outer end of the pore, with a well depth of -12.2 RT, and with a barrier at each end of the pore. The model predicts that the Cd2+ entry rate is nearly voltage independent, but the exit rate is steeply voltage dependent (e-fold/17 mV). Analysis further suggests that the channel closes at a normal rate with Cd2+ in the pore.