The necessity and complexity of standardization

-The standards are one of the most important infrastructural elements of the economy. The relationship between all factors ensuring product quality and safety is carried out by using complex standardization. The standards establish and ensure the technically achievable level of safety, quality and competitiveness of products. The main factors of standardization object: the object composition, object production and monitoring, in their turn, form the following more precise groups of factors, determining the object quality: primary products and materials, component nodes and parts, production technology, equipment, tools and appliances, measurement means, and test methods. On the example of a specific standard, the "tree of references" of the first and second levels and the problems of an integrated approach for establishing quality requirements for a specific product is considered. The necessity and complexity of updating the requirements that ensure the systematization, optimization and coordination of all interacting factors influencing a specific object of standardization and providing an economically optimal level of quality of the object are demonstrated. © 2020, World Scientific and Engineering Academy and Society. All rights reserved

Hybrid Agents Implementation for the Control of the Construction Company

Planning the project duration together with separate works is an essential element of managing the construction. The final duration depends on multiple factors, including the funds, customer requests, and capabilities of the construction company. In order to avoid additional costs in penalties or additional expenses, the management needs to estimate the real construction duration in advance, before the contract is signed. Further on, these terms need to be monitored both in whole and for the specific jobs in order to be able to edit further stages with regard of the remaining time, resources and used resources ratio. The development of a decision support system for the construction company is a pressing problem due to the growing demand in decision making persons' labor automation in planning and monitoring the construction processes. The paper presents the model and the application experience for such a system. © 2017 The Authors

Special features of photodegradation of organic compounds upon exposure to excilamp light

The use of gas discharge sources of modern spontaneous radiation – excilamps – for photodegradation of organic compounds is discussed. The process of photodegradation upon exposure to excilamp light is considered on an example of degradation of a widespread herbicide – 2,4-dichlorophenoxyacetic acid (2,4-D) – in a continuous-flow photoreactor upon exposure to light of Xe2(λrad~ 172 nm), KrCl (λrad~ 222 nm), and XeBr (λrad~ 283 nm) excilamps. It is found that the degradation of 2,4-D after exposure to Xe2excilamp light occurs much more effective than upon exposure to other radiation sources. However, the dechlorination process accompanying the photodegradation of 2,4-D in an aqueous solution upon exposure to the KrCl excilamp is more intensive than that upon exposure to Xe2lamp. The dynamics of changing the toxicant concentration in the solution during UV irradiation is established. The toxicity of 2,4-D aqueous solutions and photolysis products after irradiation are estimated. It is found that the initial bioluminescence index increases upon exposure to XeBr excilamp light, thereby reducing the toxicity in comparison with the Xe2and KrCl excilamps. The solutions become most toxic under excitation by the Xe2excilamp. We have succeeded in reducing the toxicity and increasing the efficiency of the photoreactor with the KrCl excilamp by addition of hydrogen peroxide. In this case, the complete 2,4-D decay has been achieved

Special features of photodegradation of organic compounds upon exposure to excilamp light

The use of gas discharge sources of modern spontaneous radiation – excilamps – for photodegradation of organic compounds is discussed. The process of photodegradation upon exposure to excilamp light is considered on an example of degradation of a widespread herbicide – 2,4-dichlorophenoxyacetic acid (2,4-D) – in a continuous-flow photoreactor upon exposure to light of Xe2(λrad~ 172 nm), KrCl (λrad~ 222 nm), and XeBr (λrad~ 283 nm) excilamps. It is found that the degradation of 2,4-D after exposure to Xe2excilamp light occurs much more effective than upon exposure to other radiation sources. However, the dechlorination process accompanying the photodegradation of 2,4-D in an aqueous solution upon exposure to the KrCl excilamp is more intensive than that upon exposure to Xe2lamp. The dynamics of changing the toxicant concentration in the solution during UV irradiation is established. The toxicity of 2,4-D aqueous solutions and photolysis products after irradiation are estimated. It is found that the initial bioluminescence index increases upon exposure to XeBr excilamp light, thereby reducing the toxicity in comparison with the Xe2and KrCl excilamps. The solutions become most toxic under excitation by the Xe2excilamp. We have succeeded in reducing the toxicity and increasing the efficiency of the photoreactor with the KrCl excilamp by addition of hydrogen peroxide. In this case, the complete 2,4-D decay has been achieved

Architecture of the Multi-agent Resource Conversion Processes Extended with Agent Coalitions

Pretty often there is a process visualization in one's mind before the process is implemented in form of a simulation model. The main purpose of this visualization is the certain improvement of an imperfect or ineffective process, or the estimation of the influence of various impacts. Most of the time the simulation systems provide a certain benefit for us, especially when the process develops in a predefined way, no matter how complex it is. But sometimes there are situations when the decision making persons have to interact between each other and make a decision with consideration of the other person's opinion. Moreover, that may have conflicts in case they use the same resources or they are focused on a common goal by using different approaches (and again, same resources). Anyway, this sort of behavior has to be modelled as well. In this work we are presenting the apparatus of the resource conversion processes for the distributed simulation system BPsim.MAS. We will present the advantages of the software, the technologies lying under the hood and some recent additions that were implemented for the definition of agent coalitions. This is something which helps us create the simulation models of the complex systems and behavior scenarios, when multiple agents interact with each other. At the end of the work we suggest a sample implementation of the system on the basis of a network of petrol stations, that relies on presented apparatus. We also compare our results with the ones achieved with the simulation model, based on the networks of requirements and capabilities. © 2017 The Authors

Features of the photodegradation of 2,4-dichlorophenoxyacetic acid under the influence of radiation from KrCl excilamps

The herbicide 2,4-dichlorophenoxyacetic acid was investigated in aqueous solution. A KrCl excilamp with an emission wavelength of 222 nm was used as radiation source. The direction of variation in the concentration of the toxicant during UV irradiation is discussed. The photodegradation constants are calculated. A chromatographic-mass spectrometric analysis of the photoproducts was undertaken

Features of the photodegradation of 2,4-dichlorophenoxyacetic acid under the influence of radiation from KrCl excilamps

The herbicide 2,4-dichlorophenoxyacetic acid was investigated in aqueous solution. A KrCl excilamp with an emission wavelength of 222 nm was used as radiation source. The direction of variation in the concentration of the toxicant during UV irradiation is discussed. The photodegradation constants are calculated. A chromatographic-mass spectrometric analysis of the photoproducts was undertaken