bluuebunny/crossref_metadata_2025 huggingface dataset:
Cyanogroup functionalized sub-2 nm ultrafine Pt nanonetworks reinforce electrocatalytic hydrogen evolution in a broad pH range
Authors: Liu Qicheng , Wang Xuan , Liu Jiaqi , Zhou Xinyi , Meng Qingwei , Zhou Xinrui , Sun Dongmei , Tang Yawen
Published: July 2021

Cyanogroup functionalized Pt ultrafine nanonetworks are synthesized via a facile one-pot oil bath heating method, and exhibit excellent HER performance in a broad pH range.
Mechanistic origin of the time-dependence of the open-circuit voltage of a galvanic cell involving a ternary or higher compound
Authors: Yoo Han-Ill , Kim Jihye , Joo Wonhyo , Martin Manfred
Published: July 2021

The open-circuit voltage U of a galvanic cell involving a multinary, e.g., SrTi1−xAlxO3−Δ is rendered time-dependent by introducing a secondary ionic carrier, e.g., H+ in addition to the primary one, O2−, due to decoupled relaxation of H and O.
Vacancy engineering of WO3−x nanosheets for electrocatalytic NRR process – a first-principles study
Authors: Luo Linfei , Wang Bojun , Wang Jianwei , Niu Xiaobin
Published: July 2021

Electron redistribution attributed to oxygen vacancy moderates the absorption and reduction of N2 and thus the promote NRR activity on WO3−x.
Unraveling the computed non-least motion pathway for the homodimerization of superchameleonic isocyanides: the peculiar nonsymmetrical (F–NC)2 reactant complex
Authors: Marin-Luna Marta , Alajarin Mateo
Published: July 2021

Isocyanides can behave as superchameleons when they are involved in homodimerization processes: both units adopt different roles along the reaction coordinate.
Designing nanoscale capacitors based on twin-graphene
Authors: Deb Jyotirmoy , Dua Harkishan , Sarkar Utpal
Published: July 2021

A ‘twin-graphene’ bilayer-based nanoscale capacitor and nanoscale dielectric capacitor are designed using a density functional theory approach including van der Waals dispersion correction.
Understanding the mechanisms and design principles for oxygen evolution and oxygen reduction activity on perovskite catalysts for alkaline zinc–air batteries
Authors: Galindev Oyunbileg , Takeguchi Tatsuya , Rahman Md. Mijanur
Published: July 2021

The high cost and limited availability of the precious metal catalysts required for catalysing the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) in metal–air batteries restrict the marketing of these clean energy technologies.
Ru(ii), Ir(iii), Re(i) and Rh(iii) based complexes as next generation anticancer metallopharmaceuticals
Authors: Das Utpal , Kar Binoy , Pete Sudhindra , Paira Priyankar
Published: July 2021

A report on several Ru(ii), Ir(iii), Re(i), and Rh(iii) based organometallic complexes for their anticancer activity based on their cytotoxicity profiles, biological targets and mechanism of action.
Knocking down the kinetic barriers towards fast-charging and low-temperature sodium metal batteries
Authors: Zheng Xueying , Gu Zhenyi , Fu Jing , Wang Haotian , Ye Xiaolu , Huang Liqiang , Liu Xuyang , Wu Xinglong , Luo Wei , Huang Yunhui
Published: July 2021

A two-pronged approach is formulated in knocking down the barriers for Na+ de-solvation and its diffusion through solid electrolyte interphase, resulting in high-performance sodium metal batteries at low-temperature and fast-charging conditions.
Substituent effects on through-space intervalence charge transfer in cofacial metal–organic frameworks
Authors: Doheny Patrick W. , Hua Carol , Chan Bun , Tuna Floriana , Collison David , Kepert Cameron J. , D’Alessandro Deanna M.
Published: July 2021

Using a combined experimental, theoretical and density functional theory analysis, important insights into the effects of structural modifications on the degree of electronic coupling and rate of electron transfer are obtained for the framework [Zn(BPPFTzTz)(tdc)]·2DMF.
Insoluble small-molecule organic cathodes for highly efficient pure-organic Li-ion batteries
Authors: Wang Xinxin , Tang Wu , Hu Yang , Liu Wenqiang , Yan Yichao , Xu Liang , Fan Cong
Published: July 2021

An insoluble small-molecule organic cathode of [N,N′-bis(2-anthraquinone)]-perylene-3,4,9,10-tetracarboxydiimide (PTCDI-DAQ) is reported for green and sustainable pure-organic Li-ion batteries.
Construction of a high fidelity epidermis-on-a-chip for scalable in vitro irritation evaluation
Authors: Zhang Jing , Chen Zaozao , Zhang Yaoyao , Wang Xingchi , Ouyang Jun , Zhu Jianfeng , Yan Yuchuan , Sun Xiaowei , Wang Fei , Li Xiaoran , Ye Huan , Sun Shiqi , Yu Qingdong , Sun Jiawei , Ge Jianjun , Li Qiwei , Han Qianqian , Pu Yuepu , Gu Zhongze
Published: July 2021

We constructed an organotypic epidermis-on-a-chip with integrated barrier function that does not use PDMS material and integrates TEER detection. It could be an alternative in irritation testing according to the OECD 439 method.
An integrated high-throughput microfluidic circulatory fluorescence-activated cell sorting system (μ-CFACS) for the enrichment of rare cells
Authors: Cai Kunpeng , Mankar Shruti , Ajiri Taiga , Shirai Kentaro , Yotoriyama Tasuku
Published: July 2021

A fully integrated high-throughput microfluidic circulatory fluorescence-activated cell sorting (μ-CFACS) system has been constructed for the contamination-free enrichment of rare cells in clinical environments.
Performance and application of carbon-based electrocatalysts in direct methanol fuel cell
Authors: Baruah Bhagyalakhi , Deb Pritam
Published: July 2021

This article reviews latest pioneering research on carbon based electrocatalyst for methanol oxidation and oxygen reduction reactions in direct methanol fuel cell along with the challenges and future prospects.
A Cu(ii)-triggered release system by l-cysteine functionalized gold nanoparticles for “on-demand” molecular delivery and bioimaging in cells
Authors: Li Shaoqing , Huang Wei , Tan Wei , Zhang Lizhu , Zhang Yanli , Shi Hongyu , Mathesh Motilal , Barrow Colin J. , Yang Wenrong , Wang Hongbin
Published: July 2021

Schematic description of GNP–l-Cys–Rh6G2 with Cu(ii) triggered release.
Tailoring the defects of sub-100 nm multipodal titanium nitride/oxynitride nanotubes for efficient water splitting performance
Authors: Eid Kamel , Sliem Mostafa H. , Abdullah Aboubakr M.
Published: July 2021

We tailored the defects of sub-100 nm multipodal titanium nitride/oxynitride nanotubes for the photocatalytic water splitting.
Copper-promoted direct amidation of isoindolinone scaffolds by sodium persulfate
Authors: Lai Huifang , Xu Jiexin , Lin Jin , Zha Daijun
Published: July 2021

We described a copper-promoted direct amidation of isoindolinone scaffolds mediated by sodium persulfate. The amides, including primary and secondary amides, can be installed on isoindolinones in moderate to excellent yields by this method.
Dirhodium(ii)-catalyzed diamination reaction via a free radical pathway
Authors: Fan Zhiying , Wang Zhifan , Shi Ruoyi , Wang Yuanhua
Published: July 2021

Unlike C–N bond formation through the well-known dirhodium(ii)-nitrenoid pathway, dirhodium(ii)-catalyzed 1,2- and 1,3-diamination reactions are realized by a free radical mechanism.
Electronic effects on polypyridyl Co complex-based water reduction catalysts
Authors: Guo Xusheng , Li Chao , Wang Weibo , Zhang Baowen , Hou Yuanjun , Wang Xuesong , Zhou Qianxiong
Published: July 2021

Three isomeric Co complexes showed a significant substituent electronic effect in photocatalytic hydrogen production.
A novel green chemistry gelation method for polyvinyl pyrrolidone (PVP) and dimethylpolysiloxane (silicone): microwave-induced in-liquid-plasma
Authors: Horikoshi Satoshi , Sawada Seiya , Serpone Nick
Published: July 2021

The discovery of a water-soluble polymer that cross-links to form a gel using a novel green gelation method: the microwave-induced in-liquid-plasma method that requires neither a cross-linking agent nor an initiator as are required in the conventional chemical method.
Interligand communication in a metal mediated LL′CT system – a case study
Authors: Dille Sara A. , Colston Kyle J. , Ratvasky Stephen C. , Pu Jingzhi , Basu Partha
Published: July 2021

The interligand communication between non-innocent dithiolene ligands of different oxidation states has been described in a Mo system. The fully reduced ene-dithiolate (Dt2−) acts as a donor moiety to the oxidized dithione (Dt0) in an LL′CT process.
Highly stable and efficient α-phase FA-based perovskite solar cells prepared in ambient air by strategically enhancing the interaction between ions in crystal lattices
Authors: Zhao Jingcheng , He Guo , Yang Dezhi , Guo Dechao , Yang Liqing , Chen Jiangshan , Ma Dongge
Published: July 2021

An α-phase FA-based perovskite is successful stabilized in ambient air using MASCN by strong interaction between ions and strong hydrogen bonds.
Cellulose to electricity conversion by an enzymatic biofuel cell
Authors: Herzallh Nidaa S. , Cohen Yifat , Cohen Roy , Chmelnik Oleg , Shoham Yuval , Yehezkeli Omer
Published: July 2021

Direct cellulose to electricity generation facilitated by a biofuel cell and cellulase complex.
Agile reversible shape-morphing of particle rafts
Authors: Son Kyungmin , Sun Jeong-Yun , Kim Ho-Young
Published: July 2021

The highly morphable particle raft changes its topography under an electric field without any prescribed patterns. The interface is stably driven to upheave and move by metallic electrodes, paper, and even human fingers.
Surface plasmon resonance study for a reliable determination of the affinity constant of multivalent grafted beads
Authors: Simone Giuseppina
Published: July 2021

Thermodynamic and kinetic parameters of the multivalent galactose beads are determined via SPR. The results show that the glycoside cluster effect influences the affinity toward the lectin and it is crucial for mimicking the biological samples.
Relaxation moduli of glass-forming systems: temperature effects and fluctuations
Authors: Klochko L. , Baschnagel J. , Wittmer J. P. , Semenov A. N.
Published: July 2021

In the present paper we demonstrate that dispersions of shear stress and pressure fluctuations show striking peaks at the glass-transition.
High performance LATP thin film electrolytes for all-solid-state microbattery applications
Authors: Siller Valerie , Morata Alex , Eroles Marc Nuñez , Arenal Raul , Gonzalez-Rosillo Juan Carlos , López del Amo Juan Miguel , Tarancón Albert
Published: July 2021

A NASICON solid electrolyte Li1+xAlxTi2−x(PO4)3 (LATP) in a thin film form has been developed with ionic conductivities as high as 0.1 mS cm−1. A route to achieve a 100-fold increase in the conductivity through post-annealing is discussed.
Electrocatalytic fixation of N2 into NO3−: electron transfer between oxygen vacancies and loaded Au in Nb2O5−x nanobelts to promote ambient nitrogen oxidation
Authors: Zhang Yintong , Du Feng , Wang Ruyi , Ling Xintong , Wang Xiaoyong , Shen Qing , Xiong Yujie , Li Tao , Zhou Yong , Zou Zhigang
Published: July 2021

The electron transfer from Au to oxygen vacancies in Au-Nb2O5−x hybrid electrocatalyst modifies the electronic structure of active sites near the interface, which enhances the performance of NOR and suppresses the activity of competitive OER.
Insulin- and cholic acid-loaded zein/casein–dextran nanoparticles enhance the oral absorption and hypoglycemic effect of insulin
Authors: Bao Xiaoyan , Qian Kang , Yao Ping
Published: July 2021

Insulin- and cholic acid-loaded zein/casein–dextran nanoparticles increase the trans-mucus permeability, intestinal and hepatic absorptions, and lymphatic transport of the loaded insulin via bile acid transporters.
Photogating-driven enhanced responsivity in a few-layered ReSe2 phototransistor
Authors: Patil Prasanna D. , Wasala Milinda , Alkhaldi Rana , Weber Lincoln , Kovi Kiran Kumar , Chakrabarti Bhaswar , Nash Jawnaye A. , Rhodes Daniel , Rosenmann Daniel , Divan Ralu , Sumant Anirudha V. , Balicas Luis , Pradhan Nihar R. , Talapatra Saikat
Published: July 2021

The paper presents a thorough investigation of photoconductive properties of few layers of rhenium diselenide (ReSe2). A correlation between responsivity (R) and power exponent (γ) indicates localized trap states plays a crucial role in photocurrent generation, commonly known as photogating. These trap states can be modulated by external factors such as temperature and gate voltage.
Communication and Social Inactivity During COVID-19 Lockdown in Hong Kong: Psychosocial Implications to Individuals With Aphasia, Their Primary Caretakers, and Healthy Adults
Authors: Kong Anthony Pak-Hin , Lau Dustin Kai-Yan , Chai Vivian Nga-Ying
Published: July 2021

Purpose

Hong Kong is among the first cities worldwide affected by COVID-19, with the first case confirmed on January 23, 2020, 7 weeks before the World Health Organization declared a pandemic on March 11, 2020. Although it has now been over a year since the onset of outbreak, there are still significant knowledge gaps on the short and long term impacts of COVID-19 on people with aphasia (PWAs) and their primary caretakers. With reference to a reshaped rehabilitation service plan to advocate for people facing disabilities and some pilot findings from an ongoing survey investigation in Hong Kong about PWAs' perspectives on the pandemic, this article aims to highlight the social inactivity and communication challenges posed to PWAs and healthy adults during lockdown.

Conclusions

The social isolation and mental implications among PWAs in Hong Kong subsequent to their limited opportunities to engage into social activities during the pandemic were evident. At the same time, one should not neglect the emotional and psychosocial impacts on PWAs' caretakers and other healthy adults. We encourage researchers from different parts of the world, especially developing and undeveloped countries, to explore and share current service delivery to PWAs and corresponding strategic plans to enhance clinical practices in this unprecedented difficult time.
A new range‐only measurement‐based glass line feature extraction method
Authors: Lee Seung Hwan , Oh Jung Hyun , An Ye Chan
Published: July 2021

This letter addresses a new range‐only measurement‐based glass line feature extraction method, which allows a low‐cost light detection and ranging (LiDAR) sensor to detect glass‐like objects without intensity and multi‐echo data. The principle that the emitted LiDAR ray incidence angle with respect to a glass surface is close to 0° is concerned. The geometric relationship between the sensor and glass objects is also considered for successful glass feature extraction. The extracted features are accumulated and reformulated for the generation of glass line features using the RANdom SAmple Consensus algorithm (RANSAC). Two experiments with different robot paths were conducted in a glass environment. The results showed that the proposed method accurately represented glass objects without any false‐positive glass feature.
Detection of coherent low-frequency radio bursts from weak-line T Tauri stars
Authors: Feeney-Johansson A. , Purser S. J. D. , Ray T. P. , Vidotto A. A. , Eislöffel J. , Callingham J. R. , Shimwell T. W. , Vedantham H. K. , Hallinan G. , Tasse C.
Published: July 2021

In recent years, thanks to new facilities such as LOFAR that are capable of sensitive observations, much work has been done on the detection of stellar radio emission at low frequencies. Such emission has commonly been shown to be coherent emission, generally attributed to electron-cyclotron maser (ECM) emission, and has usually been detected from main-sequence M dwarfs. Here we report the first detection of coherent emission at low frequencies from T Tauri stars, which are known to be associated with high levels of stellar activity. Using LOFAR, we detect several bright radio bursts at 150 MHz from two weak-line T Tauri stars: KPNO-Tau 14 and LkCa 4. All of the bursts have high brightness temperatures (1013 − 1014 K) and high circular polarisation fractions (60–90%), indicating that they must be due to a coherent emission mechanism. This could be either plasma emission or ECM emission. Due to the exceptionally high brightness temperatures seen in at least one of the bursts (≥1014 K), as well as the high circular polarisation levels, it seems unlikely that plasma emission could be the source; as such, ECM is favoured as the most likely emission mechanism. Assuming this is the case, the required magnetic field in the emission regions would be 40–70 G. We determine that the most likely method of generating ECM emission is plasma co-rotation breakdown in the stellar magnetosphere. There remains the possibility, however, that it could be due to an interaction with an orbiting exoplanet.
Analysis of patent sources in the field of environmental monitoring of objects
Authors: Petryaeva Alexandra , Bolsunovskaya Marina , Shirokova Svetlana , Leksashov Aleksandr , Zhukov Andrey , Kuptsov Aleksander , Kazakov Dmitry
Published: July 2021

In the modern world, trends are constantly changing, and the process of globalization sets many new directions for development. This undoubtedly affects the approaches to each individual problem, among which the issue of maintaining the balance of the environment and technological progress is acutely raised. New risks and threats accompany the need for humanity to develop comprehensive solutions to solve critical situations that can later be predicted and acted on ahead of the curve. This article examines the concept of “environmental monitoring” in the modern context: the adaptation of systems to the process of globalization, as well as the consideration of a number of patents on the selected topic.
A research on the influence of geological factors to gas discharge from No.8 un-mined solid coal seam of Baode Coal Mine
Authors: Lv Yinghua , An Shi Gang , Liang Wen Xu , Chen Dian Fu , Fu Wei
Published: July 2021

Mining is gradually progressed toward the in-depth area of No.8 solid coal seam in No.3 panel of Baode Coal Mine. In order to secure safe mining in this area, a systematic analysis is conducted on the geological factors that influence gas occurrence. Based on the basic data actually measured at site, grey relational analysis (GRA) is adopted for predictive analysis of influencing factors (depth, coal seam thickness, metamorphic grade, sand to mud ratio of roof, sand to mud ratio of floor, geological structure and washout), followed by establishment of a grey relational model. Then, the relation degree among factors is calculated, thus identifying the main controlling factors of gas occurrence. The research result suggests: the main geological factors that influence gas occurrence in No.8 coal seam are geological structure and washout. A model equation is established for prediction of gas content using multiple regression method: y=3.2429+0.0047X1+0.0079X2-0.0180X3+0.0016X4-0.0215X5+0.4641X6+0.2001X7. This equation demonstrates high degree of fitting.
Model development for the selection of the optimal form of information and consulting service in the agricultural sector of Uzbekistan
Authors: Rustamova Iroda , Galimova Firyuza , Dekhkanova Nilufar , Usmanova Mukhlisa
Published: July 2021

An important condition for the dynamic development of the Republic of Uzbekistan is the accelerated introduction of modern innovative technologies in the economy, social and other spheres with the widespread use of the achievements of science and technology. In order to assess the degree of use of information and consulting services and the application of innovations in farms of the republic, within the framework of the project, a survey of heads of farms was conducted and, on the basis of the survey, a model of the optimal form of information and consulting services for agriculture was developed.
Improvement of curd mass production technology
Authors: Gerber Yuri , Oshchepkova Ekaterina , Gavrilov Alexander , Ermolin Dmitry
Published: July 2021

The article is devoted to the improvement of the curd mass production technology developed by the authors earlier, in particular, the selection of the fruit component to be added to the product to improve its nutritional qualities. Besides, the organoleptic and physicochemical characteristics of the proposed product have been evaluated and its fatty acid composition has been analyzed in order to confirm the beneficial properties of the curd under consideration. The relevance and novelty of the topic lies in the use of a fruit component that has not been previously used in such technologies, as well as in the creation of the product having a balanced content of nutrients, vitamins, and antioxidants.
Anatomo-physiological features of knee injuries and possibilities of conservative treatment
Authors: Yurlova Yulia , Dianov Sergey
Published: July 2021

The knee joint is a complex biomechanical system, where the complexity of structure determines pathology variety, difficulties in treatment and rehabilitation. The conservative treatment possibilities of the ligamentous apparatus injuries of a knee are the subject of our discussion. Purpose of the study is to analyze the prevalence of knee traumatic injuries and modern ideas about the conservative treatment possibility of these injuries. Ligamentous apparatus injury of a knee joint is a common one, especially among athletes, with different mechanisms of knee injuries characteristic of different sports. Injuries of the lateral collateral ligament must be diagnosed in a timely manner in order to determine the possibilities of conservative and / or surgical treatment. Failure to recognize the injury details can lead instability and poor results to a knee after ligament reconstruction. Proponents of conservative treatment tactics provide evidence that non-operative treating of the ligaments also gives good results. The complex structure of a knee joint and a large number of variants of its damage impose a special responsibility on traumatologists-rehabilitologists, who are engaged in the restoration of its functions. The question of the choice between surgical restoration or conservative treatment of acute BCS injuries of knee joints remains open and depends on the specific situation, but in each case, rehabilitation measures are required, on the timeliness and adequacy of which the patient's quality of life will depend on.
Influence of extracurricular fertilization on growth, development, quality indicators and grain yield of winter wheat
Authors: Azizov Bakhrom , Djabborov Shavkat , Asatova Saodat , Kuchkorova Nodira
Published: July 2021

In recent years, the increase in grain yield under irrigated conditions has led to a decrease in technological quality of grain. The main reason for this is the lack of nitrogen during the grain formation in wheat on gray soils with low humus content. Under irrigated conditions, one of the most urgent tasks is to increase the grain yield of winter wheat and improve technological quality. According to the results of scientific research, today winter wheat absorbs 50-55% of nitrogen fertilizers, 20-22% of phosphorus fertilizers and 55-60% of potassium fertilizers. Some of the nitrogen fertilizers not assimilated by the plant are released into the air in the ammonia state, while some are washed into the groundwater in the nitrite and nitrate state. This situation has a negative impact on the environment. This condition is prevented when the leaf orchids are fed, as well as the rate of absorption of phosphorus by the plant increases sharply.
Analysis of mechanical properties, biochemical composition and technological parameters of grape (Vitis) raisin varieties in conditions of Uzbekistan
Authors: Odinayev Mirzamad , Buriev Khasan , Sultonov Komolitdin , Eralieva Shamshoda
Published: July 2021

This article describes the agrobiological characteristics of grapes (Vitis) raisins (Hermione) grown in Uzbekistan, the mechanical and biochemical composition of the grape and the technological - raisin (Hermione) indicators of large grape varieties. The highest sugar content in Hermione was found in the Sultani variety at 70.9%, while in the Kara Djandjal variety it was also insignificant compared to control (64.6%). The highest organoleptic value of hermione product made from raisin varieties of grapes was recorded in Sultani and Hussaine nutmeg varieties. It was observed that the tasting value of hermione products made from grapes of this variety is the highest - 8.0 and 7.9 points, respectively, for varieties.
Information systems for food supply management in the region
Authors: Kharitonov Vitaly Igorevich , Sergushina Elena Sergeevna , Kabanov Oleg Vladimirovich
Published: July 2021

The article deals with the problem of eliminating the inappropriate level of development of information technologies and their use in solving urgent problems of informatization of the food supply system. The article analyzes the main information systems of the agro-industrial complex in the aspect of managing the food supply system, and offers recommendations for eliminating the existing gap in the use of information technologies in the agro-industrial sector.
A method to solve the problem of low precision of micro stabilized platform caused by frame coupling - Based on Fuzzy PID
Authors: Yan Dongwen
Published: July 2021

Aiming at the problem of low control efficiency of small stable platform due to frame coupling, an intelligent control algorithm (fuzzy-PID) combining fuzzy controller with traditional PID is designed. The fuzzy PID controller is added to the position closed loop of the stable platform control system, and the motor position signal is collected and analyzed. Compared with the traditional PID control algorithm, the fuzzy PID control algorithm has the advantages of small overshoot, high control precision and strong anti-interference ability. The simulation test in Simulink environment shows that the overshoot of the system is reduced under the algorithm σ, which can be controlled within 1% and the adjusting time t is controlled within 0.5s, which can realize the stable control of the yaw angle, pitch angle and roll angle of the stabilized platform.
Designing a sustainable logistics supply chain
Authors: Suvorova Svetlana , Kulikova Oksana , Tropynina Natalja
Published: July 2021

The purpose of study was to identify the main approaches to the formation of an industry solution related to the design of effective supply chains and aimed at increasing the visibility of constraints and bottlenecks, as well as to prevent unwanted blockages in the logistics process. The work uses general scientific methods of logistics research based on economic and methodological developments in the field of transdisciplinary analysis of modern logistics. The necessity of using a qualitatively new approach of fragmented design of the logistics process, based on a system of values, focused on the new code and digital thinking, in the core of which the cognitive platform is in the real economy sector, has been substantiated. The main components of an industry solution for supply chain visibility and traceability are defined. Conceptualized and theoretically divided into stages the process of designing an effective logistics supply chain that meets the conditions of visibility and traceability. The formation of an industry solution related to the design of a fragmented logistics process and an efficient supply chain is of applied importance and can maximally meet the growing needs of stakeholders to create sustainable multi-level distribution channels of all types of resources.
Post-COVID 2019 sustainable economic development: a new cycle of digital development
Authors: Pirogova Oksana , Lysova Elena , Sozinova Anastasia
Published: July 2021

The purpose of the work is to simulate sustainable economic development under the influence of the spread of the global pandemic COVID-2019 and its consequences. The work uses such methods of scientific research as classification, problem and comparative analyzes, methods of synthesis and analysis of cause-and-effect relationships, strategy, methods of economic statistics: methods of correlation and regression analyzes, analysis of variance. The study is carried out on the example of the leaders (countries from the top 20) of the World Bank global ranking according to the value of the index of doing business for 2020. Scenarios of sustainable economic development after COVID-2019 are modelled under the influence of digitalization. The scenarios that were written showed that digital technologies can most likely be used to launch a new cycle of digital development. It has been proved that digital technologies, most likely, cannot be used as a countercyclical tool for regulating the market situation, since the scenarios drawn up indicate the absence of regression dependence.
Indoor environment monitoring device based on STM32
Authors: Wang Anhang
Published: July 2021

Based on people’s demand for indoor air quality monitoring, an indoor ambient intelligence detection system with STM32F103C8T6 microcontroller as the core controller is designed, which can monitor the current indoor temperature, humidity, suspended particles (PM10) and toxic and harmful gases in the air in real time, accurately and effectively. And the current indoor environment is transmitted to the computer for display through Bluetooth, so as to warn people in time and avoid harm to human health. The system has the characteristics of small size, convenience, reliability and simple operation, and can be widely used in the field of indoor environment detection.
Research of filter materials for dust fractioning
Authors: Dmitrienko Vladimir , Мaslennikov Stanislav , Bogomzov Аleksandr
Published: July 2021

A special place in air pollution with dust emissions is occupied by the production of building materials, using large quantities of dispersed mineral substances as aggregates. The article is devoted to the study of hazardous dust fractions emission when assessing the dustiness of the working area for the production of concrete and reinforced concrete products, since the specific location and operation of the equipment complex is characterized by uneven dust formation in space and time. This reduces the efficiency of the aspiration systems. Based on the analysis of methods and means for assessing dustiness, the use of the gravimetric method is justified, however, to assess the content of the most dangerous dust particles for the human body with a size of 2.5 to 10 microns, a size separation of particles is required. Non-woven synthetic filter materials of various thick-nesses and densities are investigated. It is proposed to carry out sampling in blocks with three filters from different filter materials. The studies were carried out with the help of a specially made portable complex. The most effective filter materials were determined with the help of microscopic analysis. The conducted calibration of the blower performance with an assessment of the measurement accuracy showed relatively small errors in the air sampling, which confirms the feasibility of assessing the dustiness of the filter blocks.
Personal maturity as sanogenic potential of experiencing crisis conditions by air transport managers
Authors: Pomytkina Liubov , Voloshyna Valentyna , Blavdzevych Alexandra , Rykov Alexandr
Published: July 2021

The article highlights the results of theoretical and empirical research of personal sanogenity of experiencing crisis conditions by air transport managers. The aim of the research is the empirical study of personal maturity development of air transport managers, their psychological resourcefulness, ability to self-development and scale of sanogenity of personal maturity of air transport managers experiencing unconventional crisis inflicted by COVID-19 pandemic. To assess the level of personal maturity, the Personal Maturity Questionnaire was applied (O.S.Shtepa). Level of actualizing of the personal psychological resources was studied through method of the Psychological Resourcefulness Questionnaire (O.S.Shtepa). To clarify the contents of the need for self-development as the potential of subjectivity, the method of Disposition Characteristics of Personal Self-Development was applied. (S.B.Kuzikova). The outcomes of the empirical research have discovered that air transport managers do not always have sufficient level of personal maturity development which is defined neither by age factor nor by amassed experience. Sanogenity of personal maturity for this social group is determined by their resourcefulness development level and ability to self-development. Successfulness in career development is not equivalent to manager personal maturity development level. Subjective assessment of successfulness and maturity made by managers themselves shows that 71.2% respondents do not reveal their satisfactory personal maturity. However, the majority of them is characterized with sufficient psychological resourcefulness having at the same time poor self-development ability. In the process of psychocorrection the sanogenic potential of personal maturity is actualized through raising self-development ability, reducing tension and traumatization of personality experiencing unconventional crisis.
Cold drawing schedules for RSt 34-2 (1.0034) steel wire for correction of overheating defects and breakless ensuring
Authors: Anishchenko Oleksandr , Kukhar Volodymyr , Oginskiy Iosyp , Korenko Maryna , Prysiazhnyi Andrii
Published: July 2021

The paper’s authors researched the defects correction for RSt 34-2 (1.0034) steel wire, obtained as result of its overheating at 1140...1160 °C. Instead of the re-heat treatment method, the authors proposed five cold drawing, annealing and overheating combination schedules, which ensure the increase in strength to DIN EN ISO 6892-1-2020 requirements. The experiments were performed on 4 mm diameter wire with increased grain size (up to 70 μm). It was found that at low initial values of wire material’s ultimate strength and yield strength there are frequent breaks of the wire at ends clamping by tongs. An equation that allows to predict the acceptable cross-sectional area of the wire end sections during drawing has been devised. An inequation for relating the Korber-Eichinger equation parameters and the wire ends sharpened sizes with reduced area due to the tongs jaws deepening after clamping the wire ends has been work out. The authors experimentally proved that the drawing overheated wire process designing taking into account the conditions of this inequation guarantees the elimination of breaks both at the wire end (at the drawing beginning) and at the process stable stage. The drawing processes for overheated wire have been developed eliminated the additional heat treatment operation to overheating defects correction.
Road transport infrastructure as a factor of socio-economic territorial development and some aspects of its formation
Authors: Prorokov Andrey , Fonina Tatiana , Shishova Lyubava
Published: July 2021

The size of the territory of the Russian Federation presupposes the existence and systematic implementation of a long-term program for the country’s spatial development, the main element of which is the transport infrastructure. The reorganization of the authorities performing the functions of managing the activities in the field of road transport and road facilities, and the development of strategies for the development of this sector was completed only in the first decade of the 21st century. The total length of transport routes is 1.7 million km, more than 90% of which are roads, which determines the importance of road transport and the development of road transport infrastructure. Automobile transport provides not only economic tasks (transports 68% of cargo), but also solves social issues: it increases the mobility of the population, ensures an increase in well-being (due to the creation of jobs), determines the level of quality of life, ensures territorial accessibility to recreational and healthcare facilities, culture, etc. Nowadays, the domestic fleet of passenger cars is almost 50 million units and continues to grow, but the age structure of the vehicle fleet is deteriorating. The main problems necessary for the implementation of the tasks and ensuring road safety are: expansion and modernization of the road network; provision of transport infrastructure with road facilities, in particular, with service stations in sufficient quantity; improving the quality of service for vehicles and a number of others.
Assessment of the consumer readiness to pay for investments in “green” electricity
Authors: Semukhina Sofia , Bostanova Dinara , Lazarev Artem
Published: July 2021

The article is devoted to the analysis of the impact of the electroenergetics on the environment, as well as to the consideration of possible scenarios for minimizing the impact of electroenergetics on the ecosystem in the future, taking into account its investment prospects and benefits. The aim of the study was to develop the most likely scenario of the impact of the electric power industry on the ecosystem. The result of the study was the pessimistic, optimistic, and basic scenarios of the most likely impact of the electric power industry on the environment for the current situation in the world, the assessment of alternative sources of electricity as the main element of reducing the negative impact of electricity on the environment. The scenarios are considered by the consumer with pairwise comparisons. Understanding the relative environmental impacts of different sources of electricity is essential for developing sound energy policies and responsible investment.
Matrix model of controlling management decisions
Authors: Parshukov Aleksey , Potemkin Valery , Aleksandrov Igor , Fedorova Marina
Published: July 2021

The article proposes the structure of the information and software environment of controlling managerial decisions and indicators that affect them. In particular, it describes: 1) a point model that allows you to analyze management decisions in conditions of a matrix functional structure for several branches (if any), functional areas and project groups simultaneously, 2) a system of indicators for fixing management decisions that allows you to create a database of management decisions, as well as maps of management decisions that reflect their content and correlating indicators, 3) model with factors of different influence on the process of making and implementation of managerial decisions, which can consist of a different number of indicators, 4) matrix model of controlling, which integrates all the models into a single system. Creation of controlling system of managerial decisions allows: to unite all types of managerial decisions into a single base, to avoid their inconsistency with each other, to keep centralized records of all indicators of external and internal environment and assess their impact on the implementation of managerial decisions, continuity of all data, transparency and convenience of control, possibility of prompt response to any deviations.
Marketing tools for managing consumer behaviour in the market of innovative products
Authors: Konnikov Evgenii , Volvach Olga , Lyamin Boris , Kapustina Irina
Published: July 2021

The article analyzes the existing approaches to managing consumer behavior. As a result, of the study, the need to manage consumer behavior in the field of innovative goods and services was identified. An analysis of existing methods and approaches to managing consumer behavior was carried out. A methodology was proposed for consistently changing the perception of innovative products by a potential consumer to improve the efficiency of innovative companies. The proposed methodology allows consistently adjusting the perception of a potential target audience through digital marketing tools. The application of the proposed methodology will significantly expand the base of the loyal target audience, which is converted into an increase in revenue, profit and other financial indicators of innovative companies.
Management justification and applications of the personal approach at the enterprise of the AIC
Authors: Lozovaya Oksana , Martynushkin Alexey , Fedoskina Irina , Vanyushina Oksana , Polyakov Mihail , Anikin Nikolay
Published: July 2021

The theory and practice of management in the Russian Federation continues to transform and adapt in the context of the economic crisis and a high degree of uncertainty of external factors for enterprises of all industries and forms of ownership. The activity of a leader in an organization is associated with overcoming the problems of internal variable factors, the change of which is most often due to threats and the impact of the external environment. The classical postulates of management theory have been mastered and applied for a long period, but modern conditions of domestic enterprises require the development of new ones, simplification of complex ones and the addition of working methods to work with situations that help managers and specialists in achieving their goals and objectives. In this regard, the application of the most well-known approaches in management is analyzed, an additional application of the personal approach is proposed, and its management rationale is given. Management at agro-industrial enterprises has specific features that are determined by characteristics of agriculture and problems of the national economy. Management activity at agro-industrial complex enterprises requires from managers high professionalism, great practical experience, selfless work, dedication to work and this industry. The developed approach will make it easier to carry out goal-setting, personally consolidate functions and tasks, delegate them according to the personal factor and the best performance, show a mixed management style focused on relationships and strategic goals.
Methodological approaches to assessing food security of special consumers
Authors: Porvadov Maxim , Akhmetshina Liliya , Vlasenko Larisa
Published: July 2021

Food supply for special consumers is the most dynamic subsystem of the system of procurement for power ministries and departments. In modern conditions, its functioning should take into account the peculiarities of the organizational structure of units and the nature of the tasks performed. The aim of the study is to systematize the existing methods for assessing the food security of the region and develop a methodological approach to assessing the food security of special consumers. As a result of the analysis of the existing methods for assessing the level of regional food security, conclusions were drawn about the absence of a single universal methodology for assessing food security, a variety of criteria and assessment indicators, the impossibility of unification, and comparative analysis by territories in accordance with their specificity and zoning. A conceptual diagram of an integrated assessment of the level of food security of special consumers is proposed.
Monitoring segment in modeling the level of financial security of a modern entrepreneurial entity
Authors: Kadala Vitalii , Kotkovskyi Volodymyr , Huzenko Olena , Nieizviestna Olena , Bohatyrova Maryna
Published: July 2021

The article is devoted to the monitoring segment in modeling the level of financial security of a modern entrepreneurial entity, attention is drawn to the content of the problems that motivate change. The economic and mathematical model “Monitoring and correcting segment” with establishment of principles of its adaptation is offered in scientific development. The author’s vision of the stages of implementation of economic-mathematical models (EMM) with detailing the actions of performers is given. The components of the five-factor model of criteria for assessing the level of financial security of entrepreneurial entities are identified and the coefficient of the monitoring and correcting segment is proposed, which provides the formation of information flow for management decisions based on the updated database. To improve the quality of management decisions in the field of financial security, a scale for assessing the level of deviations according to the criterion of the monitoring and correcting segment has been developed for entrepreneurial entities. The expediency of introduction of the offered changes in system of an estimation of financial safety of entrepreneurial entities is proved, and the directions of the further researches are established.
Matrix approach to managing of rationing in the public procurement
Authors: Stroganova Yevgenia , Kadyrov Niyaz , Prokhorov Alexander
Published: July 2021

The article analyzes the potential for improving rationing in the public procurement system to increase their transparency and efficiency. An original method of procurement rationing based on a matrix approach to management is proposed. The methodology includes a combination of mathematical methods, scenario and predictive methods, which allows us to take into account the alternative solutions in procurement management. The fundamental principle of applying the matrix approach in procurement is not to optimize the procedures within a specific order, not to save budget funds as such, but to increase the efficiency of procurement planning in order to implement the entire set of projects, taking into account the factors of time, the need for procurement for the customer and public interests.
Study of the features of fears in preschool children with impaired speech development in comparison with normally developing peers in Moscow City
Authors: Kolyagina Victoria , Valdes Odriozola Maria , Eremina Anna
Published: July 2021

Currently, the number of children with impaired speech development is constantly increasing, but the emotional difficulties that exist in this category of children remain insufficiently studied. Regional studies are particularly important in this area, and they provide the best insight into which emotional disturbances are related to the structure of the disability and the family situation, and which are related to general social tensions in a particular region and especially in a metropolitan setting. This article presents the research data on the psychological study of fears in children with various speech development disorders and their normally developing peers. The aim of the research is to identify and study the characteristics of fears in preschoolers with speech development impairments in Moscow City. The research methods. The study and analysis of medical, psychological and pedagogical literature, observation, conversation, the study of medical and pedagogical documentation, collection and analysis of anamnestic data, analysis of the products of children’s activities, modified questionnaire by A.I. Zakharov “fears in the houses”, Peter Muris’s modified test “fear levels”, a questionnaire for parents to identify the fears of children and parents, test questionnaire of child-parent relationship (QPR) by A.Y. Vargi and V.V. Stolin. methods of mathematical statistics, quantitative and qualitative analysis of the experimental data. The results of the study. Experimental data were obtained and systematized. It characterizes the features of fears of older preschoolers with different impaired speech development in comparison with normally developing peers. The description of the dominant fears of preschool children and their specific features inherent in children with speech disorders is given. Data were obtained on predisposition to an increased number of fears in the male part of the examined group of children. There were identified the average fears indicators that were higher than the existing standards for all the studied groups.