bluuebunny/crossref_metadata_2025 huggingface dataset:
INTRODUCTION
Authors: Camp Charles W. , Clement John J.
Published: September 2020

The units listed in the table of contents of this book are areas where students have exhibited qualitative preconceptions—ideas that they bring to class with them prior to instruction in physics. Research has shown that certain preconceptions conflict with the physicist’s point of view in many circumstances. It has also shown that some of these conflicting preconceptions are quite persistent and seem to resist change when using normal instructional techniques. The motivating idea for this book is to provide a set of lessons that are aimed specifically at these particularly troublesome areas and that use special techniques for dealing with them. Ideas in the lessons can be used to supplement any course that includes mechanics.
Safety in Physics Education
Authors:   American Association of Physics Teachers Apparatus Committee
Published: September 2020

Are physics activities really hazardous? Science by its very nature can never be completely risk-free. The goal of this manual is to create an awareness of safety, to encourage safe habits, and to teach respect for potential safety hazards.

This manual is intended for a broad audience in the physics teaching community. It can be used across the spectrum of experimental and demonstration activities — from elementary to advanced undergraduate laboratories.
An Introduction to Risk and Risk Management
Authors:   American Association of Physics Teachers Apparatus Committee
Published: September 2020

Safety in physics begins with an understanding of risk and risk management. Choices made in life contain risks, which can be minimized, but are not unavoidable. Even innocent actions have risks because of unforeseen events.
Physical Hazards
Authors:   American Association of Physics Teachers Apparatus Committee
Published: September 2020

Physical hazards are those inherent in an object or apparatus, not in their actual operation. Physical hazards are the most prolific type of hazard in the classroom or laboratory. They occur in most of the equipment used in physics.
Mechanical Hazards
Authors:   American Association of Physics Teachers Apparatus Committee
Published: September 2020

Mechanical hazards occur in the operation of the apparatus itself. In other words, the apparatus cannot be operated without the hazards being present. Commonly found in woodworking or machine shops, these hazards can also be found in ordinary demonstration apparatus.
Chemical Hazards
Authors:   American Association of Physics Teachers Apparatus Committee
Published: September 2020

You might think that chemicals are not often used in physics instruction. But after an inventory, you might be surprised. Cleaning solvents such as acetone or alcohols, compressed gases and cryogenics, superconducting materials, and mercury are likely to be present in most physics classes. Physical science and advanced laboratories probably contain even more. Therefore, physics is not exempt from chemical safety and regulation.
Thermal Hazards
Authors:   American Association of Physics Teachers Apparatus Committee
Published: September 2020

Thermal hazards come up when heat is dissipated, intentionally or unintentionally. Certain equipment or procedures naturally give off heat, but most produce thermal hazards only if something is wrong — equipment malfunction, material decomposition, or misuse. These situations create hazards (personal contact or fire) that may be unknown to the operator.
Additional Safety Issues
Authors:   American Association of Physics Teachers Apparatus Committee
Published: September 2020

A demonstration should be used primarily for its pedagogic value, with entertainment secondary. Ideally, both can be combined safely. Be careful of the message (subliminal or otherwise) being sent — student impressions should be rooted in the physics while still seeing that “physics can be fun.”
Emergency Procedures
Authors:   American Association of Physics Teachers Apparatus Committee
Published: September 2020

Teachers and teacher aides are not expected to be emergency medical technicians, but they should know what to do in an emergency. Facility-wide and local (e.g., classroom or laboratory) emergencies will be examined.
Teaching About Magnets & Magnetism
Authors: Nelson Jane Bray , Nelson Jim
Published: September 2020

The demonstrations and activities concerning magnets and magnetism described in this guide have been developed over many years. Most involve inexpensive and simple materials that are commonly available and easily put together. The teaching approach has students thinking about, and put into writing, what they expect to happen before they do the activities.
Teacher Background Information
Authors: Mader Jan , Winn Mary
Published: September 2020

A physics course should provide students with an understanding of major concepts that prepare them to make more intelligent decisions on societal issues. It should encourage application to common life experiences that make the interpretation of events in the student’s environment more meaningful.
Dynamics
Authors: Mader Jan , Winn Mary
Published: September 2020

The typical approach to dynamics and the study of Newton’s laws is to study the concept of inertia, Newton’s first law; F = ma, Newton’s second law; and finally Action Reaction, Newton’s third law. That is the order in which the activities are arranged in this section. Inertia can be seen as a special case of Newton’s second law. Newton’s third law (Interactions) is an extension of forces to a two-body system.
Electrostatics
Authors: Mader Jan , Winn Mary
Published: September 2020

Every student has experienced the effect of electrostatics, whether from scuffling across a carpet and shocking himself on a light switch or combating flyaway hair. Most of the forces that we experience in our everyday lives are gravitational or electrostatic in nature. If electrostatic forces are so common, why are there misconceptions, such as the following?
Magnetism and Magnetic Fields
Authors: Mader Jan , Winn Mary
Published: September 2020

The study of magnetism and magnetic fields readily follows the study of electricity and is normally a second-semester topic in a first-year physics course. One of the difficulties that a teacher may encounter is that students often confuse magnetic poles with electric charges. Be sure that students refer to north and south poles rather than “positive” and “negative” poles to avoid confusion with electrical principles. Students may be unaware that the magnetic pole at or near Earth’s geographic North Pole is actually a magnetic South Pole. Some textbooks explain the “north-seeking” nature of Earth’s “North” Pole.
Assessment and Evaluation
Authors: Mader Jan , Winn Mary
Published: September 2020

Assessment is gathering information about students’ knowledge, skills, abilities, and attitudes. Assessment may take many forms, for example, tests, problem sets, essays, term papers, journals, laboratory exercises, demonstrations, projects, presentations, extended investigations, interviews, concept maps, and portfolios. Use of computers and other technological tools may be an integral part of producing and recording the results of assessment activities. Evaluation is making judgments based on the information gathered. Assessment and evaluation are pivotal elements of teaching.
Introduction for Workshop Leaders
Authors: Lehman Cherie Bibo , Antinone Linda J. , Gastineau John E.
Published: September 2020

The National Council of Teachers of Mathematics curriculum and evaluation standards for school mathematics have challenged mathematics teachers to change, suggesting reforms throughout the mathematics curriculum. Changes include an increased emphasis on conceptual understanding, multiple representations of problem situations, connections, data analysis, and mathematical problem solving. The study of functions should include symbolic forms, graphic forms, and connections to real world problem situations. Major themes include the integration of technology into the curriculum, a decreased emphasis on rote methods, and an increased emphasis on applications of mathematics (NCTM, 1989).
Parametric Equations
Authors: Lehman Cherie Bibo , Antinone Linda J. , Gastineau John E.
Published: September 2020

A place kicker must kick a football from a point 36-m (about 40 yards) from the goal and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 20 m/s at an angle of 53° to the horizontal.
The Distance Scale of the Universe
Authors: Krauss Lawrence M. , Starkman Glenn D.
Published: September 2020

Cosmological distances are so large that it is inconvenient to use normal units, such as cm, km, miles, etc., so another fiducial set of units has been devised. The distance from the earth to the sun, approximately 1.5 × 1013 cm, is called an Astronomical Unit (AU). Solar system distances are typically measured in AU’s. However, for objects outside our solar system, another unit is more appropriate. Since relativity implies that the speed of light is constant for all inertial (non-accelerating) observers, the distance light travels in a fixed time is a constant for all observers. For example, it takes light approximately eight minutes to travel from the sun to the earth, so that we can characterize the earth-sun distance as eight light-minutes.
The Cosmic Microwave Background
Authors: Krauss Lawrence M. , Starkman Glenn D.
Published: September 2020

Next to the discovery of the Hubble expansion, the most important discovery in cosmology involves what has become known as the Cosmic Microwave Background Radiation (CBR). In 1965 a universal cosmic background of radiation was discovered accidentally by Penzias and Wilson at Bell Laboratories in New Jersey using a sensitive radio antenna. This radiation background appeared to be isotropic, and although observed at only one wavelength, was characterized by a “noise temperature” of about 3 degrees above absolute zero. Shortly after the discovery it was recognized that this background was the “afterglow” of the Big Bang explosion.
Teaching About Impulse and Momentum
Authors: Franklin Bill
Published: September 2020

This AAPT/PTRA resource book features labs and demos physics teachers can use to give students hands-on opportunities to learn about impulse and momentum. “Make-and-take activities” include AAPT Apparatus Contest winners “An Air Impulse Rocket,” “A Fan Driven Sailcart,” “An Elastic/Inelastic Collision Cart,” and others. Among the topics treated are automobile safety, wing lift, water nozzle reaction, and spacecraft use of gravity “slingshots.”
Laboratory Activities
Authors: Franklin Bill
Published: September 2020

Laboratory activities presented are:Egg Pitching ActivityLabs With One-Dimensional Collisions and ExplosionsLabs With Two-Dimensional CollisionsAir Impulse Rocket and LauncherThe Reaction Force on a HoseBungee CartStudent Hovercraft Construction
Demonstrations
Authors: Franklin Bill
Published: September 2020

Demonstrations presented are:The Tablecloth TrickMulti-Purpose Cart Construction 4.3 Cart Accessories: Fan Cart with SailsCart Accessories: Elastic and Inelastic CollisionsThe Fan-Driven SailboatNewton’s CradleClackersToppling a Block With a Pendulum BlowSlime BallsSad and Happy BallsCheapskate Elastic/Inelastic Collision DemonstratorStacked BallsCoefficient of Restitution ApparatusRotating Sail Magnus Effect DemonstratorHomemade Fan Unit, Robert Morse Design
Media Resources
Authors: Franklin Bill
Published: September 2020

Media resources are:Cinema ClassicsSongsM TimesPool Table Physics RapAn Impulse to Sing
Exploring Physics in the Classroom
Authors: Amann George , Barber Jon E. , Ryan Hank J.
Published: September 2020

The key to learning is student involvement! This AAPT/PTRA manual presents examples of two techniques that are proven to increase student involvement in your classroom Based on the “5E” model of learning, exploratories are designed to get your students excited about the material they will explore in your classroom with you. Practicums are a unique method for measuring a class’s learning in an “authentic” manner that will ensure the whole class is excited and totally immersed in the process.
The Practicum
Authors: Amann George , Barber Jon E. , Ryan Hank J.
Published: September 2020

The problem is presented to the class as a whole, and the entire class must agree upon any solution reached. In addition, each member of the class is responsible for all parts of the solution and must be able to answer questions about it. The class’s grade depends upon both the validity of their solution and the ability of any member of the class to explain it. The second half of this requirement ensures that every member of the class knows and understands the material being discussed. It is the class’s responsibility to ensure that everyone is comfortable with the solution, can duplicate it if necessary, and that no one is left behind. If either of these conditions is not met, the entire class fails the practicum. In my classroom, the practicum is part of the students’ exam grade. If the class successfully completes it, each student will receive a perfect score on the first 10 points of the upcoming test. Top students will be loath to lose these points, and the others in the class consider it a major boost to their grade. Regardless of how you choose to employ the grade, it is important that the practicum receive a grade to give it validity in the eyes of the students. I do not recommend that you make the points so large that it affects any one student’s overall grade very much.
Preface
Authors: Amann George
Published: September 2020

Educational research has taught us much about how students learn, and although many theories and techniques have been proposed over the years, one constant keeps reappearing. For students to learn any subject well, they must be actively engaged in the learning process. Research by Piaget, and later Robert Karplus, along with many others has suggested at least one effective method for helping students become actively engaged in the “learning cycle.” The purpose of this manual is to illustrate how two techniques may be used to implement aspects of the learning cycle in the teaching of physics.
Association of acute and chronic workloads with injury risk in high‐performance junior tennis players
Authors: Moreno‐Pérez Victor , Prieto Jaime , Del Coso Juan , Lidó‐Micó José Ezequiel , Fragoso Miguel , Penalva Francisco José , Reid Machar , Pluim Babette M.
Published: September 2020

This study examined the association and predictive ability of several markers of internal workload on risk of injury in high‐performance junior tennis players. Fifteen young, high‐level tennis players (9 males, 6 females; age: 17.2 ± 1.1 years; height: 178.5 ± 8.7 cm; mass: 68.1 ± 4.8 kg) participated in this investigation. Data on injury epidemiology and internal workload during training were obtained for one competitive season. The session‐rating of perceived exertion (s‐RPE) was used to calculate internal workload markers in absolute (acute workload and chronic workload for 2‐weeks, 3‐weeks and 4‐weeks) and relative terms (acute:chronic workload ratios [ACWR] for 2‐weeks, 3‐weeks and 4‐weeks). Associations and diagnostic power for predicting tennis injuries were examined through generalised estimating equations and receiver operating characteristics analyses. During the season, a total of 40 injuries were recorded, corresponding to 3.5 injuries per 1000 h of tennis practice. The acute workload was highly associated with injury incidence (P=0.04), as injury risk increased by 1.62 times (95% CI: 1.01–2.62) for every increase of 1858.7 arbitrary units (AU) of the workload during the most recent training week. However, acute workload was a poor predictor of injury, and associations between injury and internal workload markers were weak (all P>0.05). These findings demonstrate an association between high values of acute workload and the risk of injury in high‐level tennis players. However, a high acute workload is only one of the many factors associated with injury, and by itself, has low predictive ability for injury.
Investigation of the correlation between perpendicular magnetic anisotropy, spin mixing conductance and interfacial Dzyaloshinskii–Moriya interaction in CoFeB-based systems
Authors: Benguettat-El Mokhtari I , Ourdani D , Roussigné Y , Mos R B , Nasui M , Chérif S M , Stachkevich A , Gabor M S , Belmeguenai M
Published: September 2020

Correlation between interfacial Dzyaloshinskii–Moriya interaction (iDMI), perpendicular magnetic anisotropy (PMA) and spin pumping-induced damping was investigated in CoFeB-based systems grown by sputtering on Si substrates, using Pt, Ta, Cu, W and MgO capping layers. Vibrating sample magnetometer, Brillouin light scattering (BLS) and broadband ferromagnetic resonance techniques were combined for this aim. The CoFeB thickness dependence of iDMI and PMA constants, in CoFeB/X (where X = Pt, Cu/Pt, Ta/Pt or W/Al), revealed that only the CoFeB/Pt system presents a measurable iDMI and that the interfacial PMA is mostly similar except for the Ta/CoFeB/Ta/Pt system. Therefore, no clear correlation between the above-mentioned interfacially-driven and spin-orbit coupling related quantities was observed due to their different origins in our systems. An efficient sample design involving various spacer layers of variable thicknesses in Ta/CoFeB(1.5 nm)/Y/Pt (where Y = Cu, Ta, MgO) allowed evidence of a linear correlation between iDMI, PMA constants and the effective spin mixing conductance. The linear dependence, which could result from the narrow variation range of PMA and/or iDMI, is attributed to the similar interface orbital hybridizations involved in PMA, iDMI and spin pumping-induced damping.
Graphene/graphitic carbon nitride decorated with AgBr to boost photoelectrochemical performance with enhanced catalytic ability
Authors: Muhmood Tahir , Cai Zihe , Lin Shengxuan , Xiao Jiajia , Hu Xiaobin , Ahmad Farooq
Published: September 2020

A novel graphene nanoplatelets (GNP) bridge between two semiconductors (AgBr and graphitic carbon nitride) was created to boost photoelectrochemical performance. The heterojunction created makes the whole system a Z-scheme catalyst. For the construction of this catalyst, the syringe pump methodology was adopted and different analytical techniques were used for the confirmation of structure and morphology. High angle annular dark field (HAADF), dark field (DF), DF-4 and DF-2 techniques, using Z-contrast phenomena, confirmed the heterostructure (ABGCN) and its composition. The constructed structure showed an enhanced photoelectrochemical and catalytic property against ‘acute toxicity category-III (MM)’ and ‘category-IV (tetracycline hydrochloride (TH))’ organic pollutants. The constructed catalyst degraded the MM in 57 min and the TH in 35 min with degradation rates of 0.01489 min−1 and 0.02387 min−1, respectively, due to the accumulation of photogenerated electrons on the conduction band (CB) of g-C3N4 and photogenerated holes on the valence band (VB) of AgBr by the transformation of charges through the graphene bridge. An ion trapping study also revealed that ·O2 and h+ were the active species which actively participated in the photocatalytic reaction.
Electrospun degradable Zn-Mn oxide hierarchical nanofibers for specific capture and efficient release of circulating tumor cells
Authors: Xu Longguang , Li Rui , Wang Zixiang , Cui Heng , Li Wei , Yu Mingxia , Guo Shi-Shang , Zhao Xing-Zhong
Published: September 2020

Constructing biological affinity devices is considered as an effective strategy for isolating circulating tumor cells (CTCs), and electrospun nanofibers (ESNFs) have recently received attention. However, the current research focuses on polymer fibers, and fabricating stimuli-responsive inorganic nanofibers for cancer diagnosis and analysis is still challenging. In this work, Zn-Mn oxide nanofibers (ZnMnNFs) are used to capture and purify cancer cells after modification with specific antibodies. Then, the hierarchical nanofibers are degraded by reductive weak acid to release the captured cells efficiently without residues. Fusion of Zn and Mn, two transition metals, enhances the surface activity of oxides so that ZnMnNFs are easier to be degraded and modified. By using MCF-7 cancer cells, the cell capture efficiency of ZnMnNFs is up to 88.2%. Furthermore, by using citric acid, it is discovered that, by comparison with Mn oxide nanofibers, the cell release efficiency of ZnMnNFs is improved to 95.1% from 15.4%. In addition, the viability of released cells exceeds 90%. Lastly, the robustness of ZnMnNFs substrates is tested in peripheral blood from breast cancer patients (BCP) and colorectal cancer patients (CCP). Combined with fluorescence labeling, CTCs are confirmed to be isolated from all the clinical samples. This is the first trial of using ternary inorganic ESNFs for cancer cell capture. It is anticipated that the degradable ESNFs will provide biocompatible theranostic platforms and overcome the current limitations of cell release for high-precision gene analysis.
Phantom material testing indicates that the mechanical properties, geometrical dimensions, and tensional state of tendons affect oscillation-based measurements
Authors: Sichting Freddy , Kram Nicolai C
Published: September 2020

Objective: There is an increasing interest in the application of oscillation-based measurement techniques to evaluate the mechanical stiffness of healthy and diseased tendons. These techniques measure the stiffness of a tendon indirectly by registering the oscillation response of a tendon to an external mechanical impulse. Although these measurement techniques seem to be comparatively easy and time-saving, their applicability is implicitly limited by their indirect measurement principle. Approach: In this study, we aim to find evidence that the oscillation response of a tendon to an external mechanical impulse is not only affected by the stiffness of a tendon but also by the tendons’ cross-sectional area (CSA), length, and tension. Therefore, we reviewed the current literature on oscillation-based techniques that measure in vivo tendon properties. Further, a phantom material was used to mimic the nature of tendons and to test the impact of four factors on oscillation-based measurements. Main results: Our results indicate that the mechanical properties, geometrical dimensions (length and CSA), and tensional state affect oscillation-based measures. Surprisingly, most studies on tendon behavior often exclusively associate their oscillation-based measurements with the mechanical stiffness of a tendon. Significance: While this narrow perspective bears the risk of misinterpretation or false implications, a broader understanding of oscillation-based measurements has the potential to shed new light on the interaction of muscles and tendons in vivo.
Suppressing excess noise for atmospheric continuous-variable quantum key distribution via adaptive optics approach
Authors: Chai Geng , Huang Peng , Cao Zhengwen , Zeng Guihua
Published: September 2020

The excess noise inducing in the process of the quantum communication procedure is the major obstacle restricting the performance of continuous-variable quantum key distribution (CVQKD). In order to effectively suppress the excess noise through correcting the propagation-induced distortions on the quality of the propagated quantum signal, we propose a general scheme of suppressing excess noise for CVQKD via adaptive optics (AO) approach. The analysis shows that phase-only AO compensation exhibits excellent performance in controlling the excess noise, which is embodied in substantially extending the secure propagation distance and improving the secret key rate of the system. And thereby the development and improvement of AO has the potential advantage to break the distance constraints due to the excess noise results from propagation-dominated factors. Our scheme provides a feasible method for further implementation of practical large-scale CVQKD.
Dual mode spectroscopic biomedical sensor: Technical considerations for the wireless testbed*
Authors: Masud Usman , Ali Mudassar , Qamar Farhan , Zeeshan Ahmed , Ikram Momna
Published: September 2020

A real time implementation of a spectroscopy based dual mode sensor necessitates a timely and reliable transmission of information to and from the sensor. This becomes one of the pivotal roles of the sensor as the wireless transmission must be timely, accurate and reliable. For this purpose, our project aims to use a Gabor expansion model with a single-tap time-frequency channel model. This protocol has been planned to be used in a biomedical sensor system that aims for the detection of human breath for patients above 60. For this mechanism to work in dispersive channels, error introduced by this model needs to be minimized by optimizing Gabor prototype frames. We attempt to reduce this error via Newton method for a Wide-Sense Stationary Uncorrelated Scattering (WSSUS) environment. Therefore, numerous factors need to be considered, and have been presented. The sensitivity of this sensor setup in terms of least amount of discernible absorption coefficient is

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, and we attempt to maintain this value via our wireless approach. The suggested solution provides an error within a threshold of 1 to 2% in case of our results. In this manner, the sanctity of information going to and from the human body is tantamount to be highly accurate that highlights the efficiency of this scheme in our biomedical sensor.
Zitterbewegung of Dirac quasiparticles emerged in a Su-Schrieffer–Heeger lattice*
Authors: Hu Yue , Guo Zheng-Xin , Zhong Ze-Ming , Li Zhi
Published: September 2020

We analytically and numerically investigate the dynamical properties of the tilted dispersion relativistic quasiparticles emerged in a cold atomic optical lattice system. By introducing the next nearest neighboring (NNN) hopping term into Su–Schrieffer–Heeger (SSH) model, the Dirac quasiparticles with tilted dispersion relation are realized. The results show that the tilted dispersion causes a drift in relativistic quasiparticles rather than affecting interference behavior between inner states. To be specific, the relativistic phenomena of the quasiparticles induced by the inner state interference (such as Zitterbewegung, Klein paradox, etc.) is completely unaffected by the tilted dispersion. In order to distinguish the drift induced by tilted dispersion and common initial velocity, we calculate the momentum distribution of the relativistic quasiparticles. We obtain the difference between the drift induced by initial velocity and tilted dispersion. The former affects the ZB, while the latter does not. By using this character, we propose a quench dynamics scheme to obtain a stable mono-spin state. The proposed cold atomic lattice system would provide a promising platform in exploring the intrinsic exotic physics of relativistic quasiparticles and the related systems.
A soft and stretchable bilayer electrode array with independent functional layers for the next generation of brain machine interfaces
Authors: Graudejus Oliver , Barton Cody , Ponce Wong Ruben D , Rowan Cami C , Oswalt Denise , Greger Bradley
Published: September 2020

Objective. Brain-Machine Interfaces (BMIs) hold great promises for advancing neuroprosthetics, robotics, and for providing treatment options for severe neurological diseases. The objective of this work is the development and in vivo evaluation of electrodes for BMIs that meet the needs to record brain activity at sub-millimeter resolution over a large area of the cortex while being soft and electromechanically robust (i.e. stretchable). Approach. Current electrodes require a trade-off between high spatiotemporal resolution and cortical coverage area. To address the needs for simultaneous high resolution and large cortical coverage, the prototype electrode array developed in this study employs a novel bilayer routing of soft and stretchable lead wires from the recording sites on the surface of the brain (electrocorticography, ECoG) to the data acquisition system. Main results. To validate the recording characteristics, the array was implanted in healthy felines for up to 5 months. Neural signals recorded from both layers of the device showed elevated mid-frequency structures typical of local field potential (LFP) signals that were stable in amplitude over implant duration, and also exhibited consistent frequency-dependent modulation after anesthesia induction by Telazol. Significance. The successful development of a soft and stretchable large-area, high resolution micro ECoG electrode array (lahrμECoG) is an important step to meet the neurotechnological needs of advanced BMI applications.
Features and modern approaches to the analysis of the financial condition of the debtor as a necessary element of the bankruptcy procedure of agricultural enterprises
Authors: Letyagina Ekaterina A , Dadayan Elena V , Storozheva Anna N
Published: September 2020

The article presents the results of a study of the features of the bankruptcy procedure for agricultural enterprises, discusses the specifics of the analysis of the financial condition of agricultural debtors, and also provides statistical data on the number of reports on declaring a debtor bankrupt and opening bankruptcy proceedings against legal entities depending on the industry of the debtor, which allows determining the position of this indicator of enterprises of agriculture, forestry, enterprises, enterprises hunting, fishing and fish farming. In addition, the study considers relevant data on the bankruptcy of agricultural enterprises in the territory of such a large region as the Krasnoyarsk Territory. In our study, we determine that the fate of an agricultural enterprise is directly dependent on data on the financial condition provided by the arbitration manager. All the main performance indicators of the debtor are reflected precisely in the report on financial and economic activities, which allows us to assess the possibilities of financial recovery of the agricultural enterprise.
Modern tools for promoting foodstuffs in the conditions of the digital economy development
Authors: Popova A D , Panchenko Yu V , Chepeleva K V , Shmeleva Zh N
Published: September 2020

The role of modern interactive media in the promotion of goods and services in the conditions of the economy digitalization is presented in the article. Relatively new tools for organizing non-standard marketing communications for the product promotion are considered. The information about the Internet tools and their advantages for the product promotion are consolidated. The target audience was determined based on the example of the Krasnoyarsk territory agricultural products, the non-traditional group of vegetable oils. The marketing plan and current tools for promoting new products were developed. The use of a comprehensive approach to the Internet marketing for the Krasnoyarsk territory agricultural enterprises will allow not only to increase sales and market share in the strategic perspective but also to popularize the regional brand; to improve its awareness and demand in foreign markets. To successfully use the Internet marketing tools, businesses must also create a positive image that inspires confidence in potential customers, paying attention to confirming the quality of products.
The importance of the agrarian sector in the socio-economic systems development: methodological aspect
Authors: Frolova O Y , Fomina L V , Shmeleva Zh N
Published: September 2020

When solving problems of the socio-economic development, coordination of interaction between various organizational systems becomes relevant. The quality of the socio-economic process in the system is determined by the presence of elements in it that ensure the implementation of interests at the level of general, private, individual, both in the present and in the future, where the driving force is the needs, and the basis for satisfying the interest is material production. Methodological aspects of the agricultural sector impact on the socio-economic process in the region are related to the provision of foodstuffs to the population. The nature of interaction between the agrarian sector and the socio-economic system represents a multi-level structure of interaction between the production, social, and environmental subsystems of the public economy. Hence, the importance of coordinating development between different systems in order to achieve a focused useful result becomes indispensable. The significance of the agrarian sector as a local system in the socio-economic process is clarified in the article based on the positioning of functional relationships, features of functioning, elements of the agrarian sector (territorial community, natural environment, material and technical resources included in the agro-industrial complex). The levels of spatial localization coverage including the mechanism of interaction, regulatory elements, indicative indicators that reflect the implementation of economic interest are revealed. The organization of the socio-economic process according to the phases of solving a practical problem allows to coordinate the interaction of local governments and business structures.
Assessment of the agricultural machinery company’s competitiveness based on data envelopment analysis
Authors: Antamoshkina O I , Bordachenko N S , Kamenskaya N V , Stupin A O
Published: September 2020

The ability of enterprises to compete in a particular product market depends not only on the totality of economic methods used for conducting business, but also directly on the competitiveness of the product. The article presents ways to improve the competitiveness of agricultural machinery products, which ultimately determines the level of competitiveness of the enterprise as a whole. The article describes the properties of the data envelopment analysis (DEA) method in terms of its effectiveness in assessing the competitiveness of agricultural machinery products, and presents a model for improving competitiveness. Based on the analysis carried out, it is concluded that the DEA method should be used to assess the competitiveness of agricultural engineering enterprises.
The issues of agrarian and economic policy transformation of the Yenisei province local self-government
Authors: Kuskashev D V , Lukinykh Yu V
Published: September 2020

The article analyzes the issues of agrarian and economic policy transformation of the Yenisei province local self-government bodies in context of capitalism genesis. A set of measures aimed at ensuring food security, providing the population with food and basic necessities, restraining price growth by implementing a mechanism for their regulation is considered. Commercial, industrial, sanitary and environmental aspects of agribusiness management in the region are highlighted. Outlines of changes in the agrarian structure of the economy of municipalities, caused by both the all-Russian processes of the capitalism genesis and development of trade and transport communications, which determined the growth trends of budget revenues and certain socio-demographic indicators are given. The data testifying to the positive dynamics of agribusiness development, its interaction with state and municipal authorities, in addressing issues of sanitary and epidemiological, food, fire safety of local residents, and environmental protection are presented.
Sentiment analysis of client reviews of the Russian Agricultural Bank service and predicted rating reviews
Authors: Akhmetshin E M , Plotnikov A V
Published: September 2020

The paper provides a sentimental analysis of reviews of the Russian Agriculture Bank service. An analysis of the sentiment of a text is a class of methods for the content analysis of texts in computer linguistics for the automated detection of emotional assessment - sentiment. As methods, we use XGBoost, neural networks. In work, we determine the tone of reviews with a rating of three, since we can not always attribute reviews to good or bad; we also determine the sentiment of reviews without a score. As a result, it was determined that the main array of reviews about the bank’s service has a negative sentiment.
Some relevant aspects of the food security legal regulation in the system of the Ministry of Internal Affairs of Russian Federation
Authors: Vlasov V A , Sherstyanykh A S
Published: September 2020

In this article, the authors associate the actual purchase of food for the internal affairs bodies with a rather complicated situation that affects the activities of agricultural producers in the context of self-isolation of citizens and the introduction of “food” sanctions and retaliatory sanctions on the part of Russia. The scientific analysis of the basic legal categories “state contract” and “state order” is carried out. Among scholars in the modern scientific legal and economic doctrine there is no consensus on the content of the above terms. The authors’ interpretation of the concept of “state order” is given as a proposal for discussion of the scientific community. The study focuses on the issue of concluding and executing government contracts for the purchase of food by a separate federal state institution of the system of internal affairs bodies.
The extreme factors influence on the grain quality technological indicators of spring wheat of Siberian selection
Authors: Kozulina N S , Fomina L V , Shmeleva Zh N
Published: September 2020

Cultivation of agricultural crops and obtaining stable yields with high technological qualities of grain are often limited by extreme environmental conditions during the plant growing season. Mongolian agriculture is characterized by a high level of dependence on natural conditions, resources, and changes in ecological systems. Sharp temperature fluctuations, high contrast and insufficient precipitation during the growing season create extreme factors for cultivating crops in Mongolia. Spring wheat varieties of Siberian selection are resistant to adverse environmental factors and have good baking qualities. In the framework of the contract between the Krasnoyarsk state agrarian university and HHK “IngetTolgoy” company (Mongolia), the research on studying extreme factors influence on the technological parameters of spring wheat grain of Siberian selection on the land of HHK “IngetTolgoy” company was conducted. The objects of research were wheat varieties of Siberian selection Novosibirskaya – 15, Novosibirskaya – 31, Kantegirskaya – 89 and varieties Selenge and Tsagaan dagliy, cultivated in HHK “IngetTolgoy” company. Recording was performed using generally accepted methods and existing State Standards. Statistical processing of the obtained data was performed by the method of dispersion and correlation analysis. The obtained results allow to conclude that despite the influence of extreme factors on wheat during the entire growing season, the highest biological yield and the best technological qualities of grain were formed by the spring wheat variety of Siberian selection Novosibirskaya – 31.
Organization of a nursery of maternal plants in the Chechen Republic and soil requirements
Authors: Bamatov I M , Kimaev Z V , Bamatov D M
Published: September 2020

The relevance of the study is determined by the lack of sufficient healthy planting material in the Russian Federation, especially in the Chechen Republic. Therefore, this project considers the way of cultivation of the maternal plants of fruit crops (the scheme that rootstocks are planted). Besides, the soil requirements (the content of humus, macroelements, microelements and soil reaction (pH) at different depths and the work that must be done with the recommendations before planting the healthy rootstock material is also illustrated in this research project.
Rational use of freshwater ecosystem resources in crayfish farming
Authors: Alexandrova E N , Tarasov K L
Published: September 2020

Using freshwater resources of the mixed forest zone in Russia when growing larvae of crayfish belonging to the subfamily Astacinae in order to obtain a planting material (PMC) is considered in the framework of the functioning of the ecosystem that is formed in cages placed in surface layers of bodies of water. Aquatic vegetation, with which, according to the technical regulations, net cages are filled, creating shelters for larvae, is an autotrophic producer, whose consumers are organisms of benthic fauna chopping and detritizing it. Crayfish larvae in this ecosystem are heterotrophic macroconsumers that consume benthic invertebrates, vegetation, and detritus. The saprobic component of the ecosystem - microorganisms-destructors of dead organic matter are bacteria and fungi, some species of which cause mycoses of crayfish larvae. The studies conducted are devoted to determine the parameters of the functioning of the ecosystem formed in cages, providing the formation of fodder and other resources necessary for the cultivation of PMC.
Management in the agro-industrial sector: methods for assessing effectiveness of the network associations
Authors: Freidman O A , Malanina Yu N
Published: September 2020

Reducing the level of import substitution is one of the important issues of the Russian agro-industrial complex development. In this regard, there is a need to find new management methods for regional agro-industrial systems with an emphasis on their interaction with retail chains and industrial enterprises. Creating comfortable conditions for the integration of economic entities in the regions is one of the aspects of management. These conditions include the retail networks development, the availability of legal mechanisms for organizing network systems and the development of the business investment environment. The article is devoted to the issues of enterprises network interaction in the agro-industrial complex, as one of the promising areas of development in a crisis economy, namely, assessing the effectiveness of associations.
Phytotesting and environmental assessment of soil in the greenhouse complex
Authors: Fomina N V
Published: September 2020

Greening the urban environment is a necessary element for improving the quality of life of the population, which requires the use of significant amounts of seedlings of flower-ornamental plants. Soil condition in greenhouse complexes does not always meet the requirements, which causes low yield and quality of grown plants. Phytotesting and assessment of ecological quality of soil in greenhouse complex were carried out through research of oxidative enzymes activity. The control of the level of toxicity and chemical contamination of soil is necessary for the development of measures to reduce and prevent changes in the soil and biotic environment. The comprehensive study of soil has revealed factors affecting its quality and suitability for growing flower crops. Dynamic changes in biological indices are recorded during phytotest of soil, as well as during control of level of enzymatic activity of oxidative enzymes. An average and low level of phytotoxicity of the studied soil is established, as well as inhibition of activity of enzymes: catalase, ascorbatoxidase, peroxidase. The soil survey in the greenhouse complex showed that for rapid diagnosis of its condition it is possible to use both phytotest of samples, to carry out analysis of the level of activity of oxidative enzymes.
Optimization processes in the Internet of Things system at agricultural enterprises
Authors: Lvovich I Ya , Lvovich Ya E , Preobrazhenskiy A P , Preobrazhenskiy Yu P , Choporov O N
Published: September 2020

The paper discusses the features of solving problems related to the optimization of information transfer processes in the Internet of things of agricultural enterprises system. The multistep process of making the optimal decision to form an Internet of things system is presented. Its block diagram is shown. It is demonstrated how the principle of optimality is realized on the basis of a system of functional equations. An example of rational use of module capacities in the overall structure in the Internet of things system at agricultural enterprises is given. The results show the possibility of increasing the effectiveness of data transfer.
Methane utilization in the Karaganda basin
Authors: Kenetayeva A A , Pak D Yu , Tenchurina A R , Shaikhova G S , Tokusheva Zh T
Published: September 2020

The mines of the Karaganda basin develop coal seams that are very gas-rich in methane and liable to sudden emissions of coal and gas. The mining of one ton of coal is accompanied by the methane emission from 30 to 45 m3 of into the mine workings, therefore, special attention is paid to the issues of reducing the methane content to safe values in the mining areas and its utilization. The gas content of mine working areas ranges from 30 to 100 m3/min or more. The increase in air supply to the site is limited by the air speed limit and the rational, from an economic point of view, cross-section areas of the mine workings.
Human capital as a fundamental determinant of rural development
Authors: Yakimova L A , Streltsova AV
Published: September 2020

The Krasnoyarsk territory is a vast area. According to the Federal State Service of the Statistic the territory population density is 1.2 people per 1 square km. Thus it makes some special demands on the quality of human capital, and it is human capital which makes it possible to develop both the rural territory and the entire economy as a whole. The problem is that human capital has suffered a lack of attention for many years. Among the ways to overcome this situation we see a number of necessary measures aimed at increasing wages for agricultural workers, improving the demographic situation, diversifying the areas of employment, improving labor conditions, and improving the quality of life. In this study, we used a sociological research method by applying a questionnaire we had compiled for the survey of rural residents. Here the author defines the term “human capital of the rural population” in her own opinion and lines up a system of indicators characterizing the basic components of the human capital of the rural population, such as health capital, education capital, labor capital, cultural and behavioral capital, as well as intellectual one. To overcome the negative situation taking place in rural areas of the Krasnoyarsk territory, it is necessary to assess human capital on the previously mentioned 5 basic components, and on base of the results to propose a socially attractive model for rural development, which in its turn will attract additional human capital. The proposed measures make it possible to increase employment in rural areas by creating agricultural cooperatives, small businesses and farms, and expand the ways of use of maternity benefit in the development of rural households and small businesses, to reduce the income tax rate for individual entrepreneurs who are registered in rural areas, as well as to increase the standards for the total area for housing construction for young families, and to apply digital forms of cultural and information services to the rural population.
Digitization of agricultural land using an unmanned aerial vehicle
Authors: Abramov N V , Semizorov S A , Sherstobitov S V , Gunger M V , Petukhov D A
Published: September 2020

Using an unmanned aerial vehicle Geoscan 201 Agro, 20,286 hectares of agricultural land were surveyed in Tyumen and Sverdlovsk regions, where 206 fields were with an area of 5,552 hectares. Creating electronic maps when piloting an UAV is a more accurate, operational method in comparison with the use of the circular tour method and the use of a space satellite. It allows getting the geographical coordinates of the boundaries of the field, calculating its area, forming orthophotomaps and an electronic image of the fields.