The approximate method of maximal tensile stress determination in rods of double-contour geodeticdomes of the system “R” exposed to dead load

The article is a brief review of the research of stress-strain state of a structure that represents a hemispherical geodetic dome exposed to the dead load. Double-contour geodetic domes composed of plates and rods are the subject of the research. The process of their design has two stages: (a) design of geometric models of geodetic domes and (b) analysis of the domes.The author demonstrates that the first stage can be implemented through the employment of the library of ArchiCAD objects. Supplementary research is needed to have the second stage implemented. The objective of this research is to present the results of the research using computeraided methods of metal structures modeling.The article presents a study of the stress-strain state of a construction with a geodetic dome (shell) of the system “R” (classification of prof. G.N. Pavlov). The purpose of the paper is to present the results of numerical modeling in PATRAN/NASTRAN system in the form of approximate formulas. Approximate formulas are presented for calculation of global maximum of stress in second contour

APPLICATION OF THE METHOD AND TOOLS FOR MONITORING THE ENERGY CONSUMPTION OF CLEAN ROOMS BASED ON THE USE OF THE SOFTWARE PACKAGE STATISTICA NEURAL NETWORKS

A system of monitoring of power consumption processes in power supply infrastructure of clean rooms at microelectronics  manufacturing enterprise is proposed in the article. Classification of basic process operations performed in clean rooms  has been completed. The key factors for monitoring of energy consumption processes of microelectronics manufacturing  enterprises have been determined. A comparative analysis of various techniques for forecasting of power consumption by  an enterprise specializing in microelectronics production has been performed. It is discovered that systems with neural networks provide the highest resistance against external and internal disturbing factors. A solution of the problem of  forecasting of power consumption with the use of Statistica Neural Network software suite is proposed. The results of  numerical modelling of predicted and actual values of power consumption by clean rooms of electric infrastructure at  microelectronics manufacturing enterprise on the basis of the developed software algorithm are presented

Harm reduction via online platforms for people who use drugs in Russia: a qualitative analysis of web outreach work

Abstract Background Harm reduction services to people who use drugs (PWUD) in Russia are insufficient in terms of quantity, government endorsement, and accessibility. The situation has recently deteriorated even further because of social distancing measures of the COVID-19 pandemic. Several organizations have started to provide some harm reduction services via online platforms by web outreach. However, little is known on how online outreach services are organized and implemented. Drawing on the example of St. Petersburg-based NGO “Humanitarian Action,” we explored web outreach work in Telegram instant messenger. Methods Our data were comprised of 4 semi-structured interviews with the NGO staff and 301 cases of web outreach work with PWUD. We used thematic analysis to study the process of web outreach, harm reduction service provision, and needs of PWUD. Results Three stages of the process of web outreach work were identified: clients initiating communication, NGO workers addressing clients’ needs, and NGO workers receiving clients’ feedback. Communication proceeded in group chat or direct messages. Challenges in addressing clients’ needs happened when clients turned for help after hours, sent recorded voice messages, sent unclear messages, and/or were unwilling to transition to telephone communication. All web outreach workers reported receiving only positive feedback on their work. The needs of PWUD were categorized into two major themes, depending on whether they can be addressed fully or partially online. In cases of online only provision of services, web outreach workers helped PWUD treat minor injection drug use complications, obtain verified harm reduction information and receive general psychological support. In instances of partial online services provision, PWUD were assisted in getting treatment of severe injection drug use complications, overdoses, and in accessing offline medical, psychological, social, legal and harm reduction services. Conclusions Our research demonstrated that web outreach work is a convenient tool for delivering some harm reduction services to PWUD either partially or completely online and for recruiting new clients (including hard-to-reach PWUD that avoid attending brick-and-mortar facilities). Harm reduction organizations should consider incorporating online harm reduction services into their activities. However, further research is needed to explore relative advantages and disadvantages of online harm reduction services.http://deepblue.lib.umich.edu/bitstream/2027.42/173805/1/12954_2020_Article_452.pd

AUTOMATED DESIGN AND STRENGTH ANALYSIS OF SINGLE-CONTOUR GEODETIC SHELLS COMPOSED OF FLAT ELEMENTS

The article is a brief review of the research of the stress-deformation state of a structure that represents a hemispherical geodetic dome exposed to the dead load. Single-contour geodetic domes composed of flat plates are the subject of the research. The process of their design has two stages: (a) design of geometric models of geodetic domes and (b) analysis of domes. The authors demonstrate that the first stage can be implemented through the employment of the library of ArchiCAD objects. Supplementary research is needed to have the second stage implemented. The objective of this research is to present the results of the research using computer-aided methods of modeling of metal structures. The analysis of smooth hemispherical domes is performed using analytical and finite-element methods within the Patran/Nastran environment. The authors demonstrate that the results of the finite-element method analysis converge with the results of the analytical method analysis. Conversion of geometric models of geodetic domes into the format that satisfies Patran preprocessor requires the employment of the Visual Basic software. Ultimately, comparison between the results obtained in respect of the geodetic dome and the analytical results obtained in respect of the smooth dome exposed to the dead load is performed. The conclusion is that the maximal stress experienced by a single-contour geodetic dome, in the event of reduction of sizes of plates, converges with the maximal stress of similar smooth domes

Optimizing digital tools for the field of substance use and substance use disorders:backcasting exercise

Background: Substance use trends are complex; they often rapidly evolve and necessitate an intersectional approach in research, service, and policy making. Current and emerging digital tools related to substance use are promising but also create a range of challenges and opportunities.Objective: This paper reports on a backcasting exercise aimed at the development of a roadmap that identifies values, challenges, facilitators, and milestones to achieve optimal use of digital tools in the substance use field by 2030.Methods: A backcasting exercise method was adopted, wherein the core elements are identifying key values, challenges, facilitators, milestones, cornerstones and a current, desired, and future scenario. A structured approach was used by means of (1) an Open Science Framework page as a web-based collaborative working space and (2) key stakeholders’ collaborative engagement during the 2022 Lisbon Addiction Conference.Results: The identified key values were digital rights, evidence-based tools, user-friendliness, accessibility and availability, and person-centeredness. The key challenges identified were ethical funding, regulations, commercialization, best practice models, digital literacy, and access or reach. The key facilitators identified were scientific research, interoperable infrastructure and a culture of innovation, expertise, ethical funding, user-friendly designs, and digital rights and regulations. A range of milestones were identified. The overarching identified cornerstones consisted of creating ethical frameworks, increasing access to digital tools, and continuous trend analysis.Conclusions: The use of digital tools in the field of substance use is linked to a range of risks and opportunities that need to be managed. The current trajectories of the use of such tools are heavily influenced by large multinational for-profit companies with relatively little involvement of key stakeholders such as people who use drugs, service providers, and researchers. The current funding models are problematic and lack the necessary flexibility associated with best practice business approaches such as lean and agile principles to design and execute customer discovery methods. Accessibility and availability, digital rights, user-friendly design, and person-focused approaches should be at the forefront in the further development of digital tools. Global legislative and technical infrastructures by means of a global action plan and strategy are necessary and should include ethical frameworks, accessibility of digital tools for substance use, and continuous trend analysis as cornerstones

Optimizing digital tools for the field of substance use and substance use disorders:backcasting exercise

Background: Substance use trends are complex; they often rapidly evolve and necessitate an intersectional approach in research, service, and policy making. Current and emerging digital tools related to substance use are promising but also create a range of challenges and opportunities.Objective: This paper reports on a backcasting exercise aimed at the development of a roadmap that identifies values, challenges, facilitators, and milestones to achieve optimal use of digital tools in the substance use field by 2030.Methods: A backcasting exercise method was adopted, wherein the core elements are identifying key values, challenges, facilitators, milestones, cornerstones and a current, desired, and future scenario. A structured approach was used by means of (1) an Open Science Framework page as a web-based collaborative working space and (2) key stakeholders’ collaborative engagement during the 2022 Lisbon Addiction Conference.Results: The identified key values were digital rights, evidence-based tools, user-friendliness, accessibility and availability, and person-centeredness. The key challenges identified were ethical funding, regulations, commercialization, best practice models, digital literacy, and access or reach. The key facilitators identified were scientific research, interoperable infrastructure and a culture of innovation, expertise, ethical funding, user-friendly designs, and digital rights and regulations. A range of milestones were identified. The overarching identified cornerstones consisted of creating ethical frameworks, increasing access to digital tools, and continuous trend analysis.Conclusions: The use of digital tools in the field of substance use is linked to a range of risks and opportunities that need to be managed. The current trajectories of the use of such tools are heavily influenced by large multinational for-profit companies with relatively little involvement of key stakeholders such as people who use drugs, service providers, and researchers. The current funding models are problematic and lack the necessary flexibility associated with best practice business approaches such as lean and agile principles to design and execute customer discovery methods. Accessibility and availability, digital rights, user-friendly design, and person-focused approaches should be at the forefront in the further development of digital tools. Global legislative and technical infrastructures by means of a global action plan and strategy are necessary and should include ethical frameworks, accessibility of digital tools for substance use, and continuous trend analysis as cornerstones