bluuebunny/crossref_metadata_2025_split huggingface dataset:
Reindeer use of low Arctic tundra correlates with landscape structure
Authors: Skarin Anna , Verdonen Mariana , Kumpula Timo , Macias-Fauria Marc , Alam Moudud , Kerby Jeffrey , Forbes Bruce C 
Published: October 2020

Abstract
Rapid climate change in Arctic regions is linked to the expansion of woody taxa (shrubification), and an increase in biomass as tundra becomes greener. Reindeer and caribou (Rangifer tarandus) are considered able to suppress vegetative greening through grazing and trampling. Quantifying reindeer use of different land cover types can help us understand their impact on the growth and recruitment of deciduous shrubs, many of which serve as fodder (e.g. Salix spp.), in favourable habitats, such as naturally denuded landslides in permafrost areas. Understanding the spatial distribution of reindeer pressure on vegetation is important to project future patterns of greening, albedo, snow capture, active layer development, and the overall resilience of tundra rangelands under ongoing climate change. Here we quantify reindeer habitat use within the low Arctic tundra zone of Yamal, West Siberia estimated from pellet-group counts, and also how active layer thickness (ALT) relates to reindeer use. Our results confirm intensive use by reindeer of terrain with high June-July time integrated normalised difference vegetation index, steeper slopes, ridges, upper slopes and valleys, and a preference for low erect shrub tundra. These sites also seem to have a shallower ALT compared to sites less used by reindeer, although we did not find any direct relationship between ALT and reindeer use. Low use of tall Salix habitats indicated that reindeer are unlikely to suppress the growth of already tall-erect woody taxa, while they exert maximum pressure in areas where shrubs are already low in stature, e.g. ridgetops. Reindeer ability to suppress the regrowth and expansion of woody taxa in landslide areas (i.e. concavities) seems limited, as these types were less used. Our results suggest that reindeer use of the landscape and hence their effects on the landscape correlates with the landscape structure. Future research is needed to evaluate the role and efficiency of reindeer as ecosystem engineers capable of mediating the effects of climate change.
A fourth-order superintegrable system with a rational potential related to Painlevé VI
Authors: Marquette Ian , Post Sarah , Ritter Lisa 
Published: October 2020

Abstract
In this paper, we investigate in detail a superintegrable extension of the singular harmonic oscillator whose wave functions can be expressed in terms of exceptional Jacobi polynomials. We show that this Hamiltonian admits a fourth-order integral of motion and use the classification of such systems to show that the potential gives a rational solution associated with the sixth Painlevé equation. Additionally, we show that the integrals of the motion close to form a cubic algebra and describe briefly deformed oscillator representations of this algebra.
Smoking regular and low-nicotine cigarettes results in comparable levels of volatile organic compounds in blood and exhaled breath
Authors: Pauwels Charlotte G G M , Hintzen Kim F H , Talhout Reinskje , Cremers Hans W J M , Pennings Jeroen L A , Smolinska Agnieszka , Opperhuizen Antoon , Van Schooten Frederik J , Boots Agnes W 
Published: October 2020

Abstract
Smokers are exposed to more than 6000 (toxic) smoke components including volatile organic compounds (VOCs). In this study VOCs levels in headspace of blood and exhaled breath, in the mainstream smoke of three types of cigarettes of one brand varying in declared tar, nicotine and carbon monoxide (TNCO) yields are investigated. The objective was to identify whether VOC levels correlate with TNCO yields of cigarettes smoked according to ISO 3308. Our data show that smoking regular and low-TNCO cigarettes result in comparable levels of VOCs in blood and exhaled breath. Hence, declared TNCO-yields as determined with the ISO 3308 machine smoking protocol are irrelevant for predicting VOC exposure upon human smoking.
Venous blood and exhaled breath were sampled from 12 male volunteers directly before and 10 min after smoking cigarettes on 3 d (day 1 Marlboro Red (regular), day 2 Marlboro Prime (highly ventilated, low-TNCO), day 3 Marlboro Prime with blocked filter ventilation (taped)). Upon smoking, the levels of toluene, ethylbenzene, m/p-xylene, o-xylene, and 2,5-dimethylfuran in both headspace of venous blood and exhaled breath increase within the same range for all three cigarette types smoked. However, no strong correlation was found between VOC levels in exhaled breath and VOC levels in headspace of blood because of variations between the individual smoking volunteers. More research is required in order to use exhaled breath sampling as a non-invasive quantitative marker for volatile toxicants from cigarette smoke exposure of different brands.
Cerebral Approach to Track Malfunction of Assets in a Smart Power Grid Information System
Authors: Sayed B T , Dekdouk A , Ashraf Y , Chaudhry S 
Published: October 2020

Abstract
Failure of assets at downstream level of Smart Power Grid being barely addressed, subsequently hoarding lots of superfluous human hours, depletion of valuable time and resources, inefficient and untimely rectification of problems leading to concerns of inefficient operations and hefty loss to the power grid organization in all its aspects. There is a need to address such failures in advance, through the use of prevailing information technological inclusion, implicating efficient operations benefiting the entire sector. With Knowledge Management Systems evolving at its growing needs to address critical issues and providing feasible solutions to the digitization of information already at high demand, we propose an analytical approach merged with the concepts of big data, to track historical data of assets and resources, to identify the possibilities of failure of assets in smart power grid infrastructure. The proposed system would identify the possible failure based on the past records of an assets performance and failures, not limited to, but also based on the expected life span of the assets. The issues will be archived for further sharing while in apposite needs and its solutions would be appropriately applied throughout the power business and its subsidiary. The data would be efficiently stored and archived in the form of digitized formats such as audio, video, images, comments, documents, feedback and other visually recognizable and multimedia formats. Various technological related electronics and gadget equipment’s such as tablets, mobile phones, laptops and other hand held devices could be easily utilized to support the work force teams towards an agile operation.
Research on Regional Micro-meteorological Measurement System for the Operation Control of Distribution Network List the author names here
Authors: Gu Yang , Zhang Shuo , Dai Xin , Lu Yongcan , Wang Yang 
Published: October 2020

Abstract
With large number of wind power and grid-connected photovoltaic system, the ratios of renewable power greatly increase. However, random variations of the meteorological environment usually have a huge impact on the output of the renewable power, also the performance and stability of power grid. Hence, a local meteorology real-time monitoring technique is really needed. In this paper, a local micro-meteorological monitoring system is proposed, which takes temperature, wind speed, wind direction, and illumination intensity into account. The measurements would provide a reliable real-time meteorological data for power supply forecast and operation reference of distribution network. The hardware and software design are discussed. Finally, a prototype is developed.
Coordinated Control of Power and Current for Grid-connected Inverter under Unbalanced Voltage
Authors: Yue Youjun , Cheng Min 
Published: October 2020

Abstract
Grid-connected inverter is the grid-connected interface of new energy, but in unbalanced power grid, there will be output power oscillation, current imbalance and other problems. Based on the mathematical model of Grid-connected inverter alpha beta stationary reference system, the generalized power reference compensation expressions of adjustable current imbalance and power fluctuation are derived, which suppresses the active-power oscillation, reactive-power oscillation and balanced current respectively. It is established to achieve the coordinate control of power and current, which enhances the operation performance of the system. Finally, the simulation results verify the effectiveness of the proposed control strategy.
Assessment and analysis of programs for the management of transport infrastructure construction projects
Authors: Bovteev Sergei , Mishakova Anastasiia 
Published: October 2020

Abstract
The use of probabilistic non-alternative network models for planning investment construction projects has been thoroughly studied and has been widely used in construction practice for several decades. One of the common methods based on such models is the Program Evaluation and Review Technique. This method is for planning the project dates in which the durations of all or some of activities cannot be unambiguously determined due to the high degree of uncertainty in the external environment in which such projects are implemented. However, the problem of controlling the deadlines and milestones of an investment construction project based on the Program Evaluation and Review Technique has not been studied well enough. This article investigates the possibilities of applying the Program Evaluation and Review Technique to track and control the construction project schedule. A method based on monitoring the values of the probability function of the timely completion of the project is presented. The method takes into account possible deviations of the predicted completion date of the project and, if they exceed the established limits, prescribes the initiation of corrective measures. We give recommendations for improving the Program Evaluation and Review Technique that reduce its shortcomings in applying for control the construction period. The greatest effect can be obtained by combining the Program Evaluation and Review Technique with other known methods, in particular, the Critical Chain Project Management.
Documentation management system for construction control at a transport construction site
Authors: Perunov A S , Baulin A V 
Published: October 2020

Abstract
The article shows the role of construction control in the construction of transport construction objects. The necessity of its implementation, starting from the early stages of construction, is justified. Reviewed a detailed list of accounting documents for carrying out construction supervision on objects of transport construction. For each document, the procedure for its preparation and frequency of submission to the customer or representatives of the contractor are described. A detailed list of reporting documents on construction supervision at transport construction facilities is considered, including conclusions on the verifiability of design and working documentation for the transport construction object, conclusion on the readiness of contractors to perform construction, reconstruction, capital repairs, conclusion on the readiness of the construction laboratory of the nondestructive testing laboratory, electrical laboratory, within the framework of the construction contractor’s activities, when performing construction, reconstruction, capital repairs, conclusion on conformity assessment is made of the object and its willingness to carry out the work of the Commission, preparation of General journal and construction supervision, charting object, act, visual-measuring control, weekly and monthly reports, act of acceptance-transmission equipment (materials) on the project of the act on the identified equipment defects (materials), reference for the audit and approval of acts examination of the hidden works, draw conclusions about the dynamics of performance., preparation of a report on the actual time of rendering construction control services at the customer’s facility. The article presents an algorithm for document management based on the assessment of the work of several enterprises, which allows for high-quality construction control on construction sites.
Basic stages of creating a BIM model for transport infrastructure objects
Authors: Korolev Vadim , Shishkina Irina , Lokteva Victoria 
Published: October 2020

Abstract
This study discusses computer-aided design systems used by design organizations and created on the basis of modern computer systems and automation methods. Deficiencies of existing systems and complexes are identified, which necessitates further work on design automation. The next stage of automation and increase in labor productivity of design engineers is considered. The important problem is considered in detail when increasing the role of information and computing systems and processes in designing, namely, the need for automated verification of information models to search for errors and to bring them into accordance with rules and regulations.
Outdoor carports for automobile transport
Authors: Ilyin Sergei , Kondrateva Ludmila , Lazarev Vladimir 
Published: October 2020

Abstract
Carports for transport parking as well as for unloading and loading are highly-demanded engineering structures. Open metal carports of medium spans have been considered. The influence of some structural solutions of carports on the consumption of material has been evaluated. The calculation of the carports frames has been carried out using the LIRA software package. Recommendations for choosing options for carports frames with lower material consumption have been given.
Method of dry construction of prefabricated reinforced concrete building
Authors: Demiche Y , Vorona-Slivinskaya L , Voskresenskaya E 
Published: October 2020

Abstract
The existing systems of dry assembly of structures from prefabricated components still require the concreting of joints, which does not allow minimizing the number of technological processes and does not eliminate the need to wait until the concrete mixture hardens. Therefore, the period of erecting a building does not reduce significantly. The present paper describes the system of dry construction assembly from prefabricated components of reinforced concrete without application of any welding or casting-in-place while performing the above-ground works, which is feasible due to the bolt connection of all components. Since no welding or concreting is required, the duration and labor intensity of the erection process reduces. The present research is aimed at working out such a system of erecting a prefabricated building of reinforced concrete, which would allow moving away from welding and joint concreting, at the same time ensuring the structural reliability. This would reduce the duration and labor intensity of the construction process. The proposed system of prefabricated dry construction assembly of reinforced concrete structures that has a plenty of advantages by virtue of its nature can be easily implemented in low- and mid-rise residential construction and for erection of industrial, public and business buildings, buildings on railway transport intended for technical operation of Railways and maintenance of transport construction objects. Moreover, the system proposed could be a perfect choice for the erection of such temporary structures as sports facilities, hospitals, parking garages and warehouses, since it is easily disassembled.
Scientific and technical maintenance of transport infrastructure facilities
Authors: Davidyuk A 
Published: October 2020

Abstract
The work aimed to determine the concepts of scientific training, the relationship of this concept with the scientific and technical maintenance of design, the definition of goals, consideration of the current state of the issue, the identification of problems of this type of activity, the definition of the scope of work in the preparation and maintenance of design and the suggestion of a further development path. The methods of the study were the analysis of the current regulatory documentation and the identification of provisions that normalize scientific preparation and scientific and technical maintenance of design, the collection and analysis of publications on topics related to the topic of this article, the analysis of the experience of this type of activity by various organizations, the subsequent generalization of the analysis results and the formation conclusions. As a result of the study, the concepts of scientific preparation and scientific and technical maintenance of design were established, the relationship between these concepts was established, the composition of work for this type of activity was determined - the minimum standardized, typical and advanced. A circle of problems and questions was also identified that accompanies the implementation of scientific and technical maintenance of design, including requirements for the results of work and their executors, criteria for the need for STMP (scientific and technical maintenance of design). In conclusion, the urgency of the problem is indicated, a way to solve it and a possible positive effect are proposed. This study substantiates the need for the development of regulatory documentation containing various requirements, norms and criteria concerning activities for scientific and technical maintenance of design.
Improving the national logistics model on an international scale in the context of the economic crisis
Authors: Karanina Elena , Selezneva Ekaterina , Chuchkalova Svetlana 
Published: October 2020

Abstract
Active international processes, the growth of the scale and number of transnational corporations have created the need for introducing global logistics chains and channels into the business system, primarily in the distribution of goods, and determined the formation of an independent logistics services market. But at the same time, during the period of the economic crisis, non-standard situations, such as a pandemic, border closures, the logistics business is one of the first to bear risks and losses both domestically and abroad. International practice shows that the effective development of transport and logistics systems at the national level stimulates the accelerated development of related industries and sectors of the economy. For the Russian Federation, located at the crossroads of international transport routes, the problem of matching global trends and strengthening its position in the market of transport and logistics services as an important logistics sector is becoming increasingly urgent. Logistics is becoming one of the quality elements for the implementation of the country’s transit potential. The development of the information and logistics segment and the creation of multimodal transport and logistics centers in the transport infrastructure will increase the competitiveness of transport services. The aim of the study is to analyze and improve the national logistics model on an international scale in the conditions of the economic crisis. The objectives of the study are: 1. Consideration of logistics models in international transport. 2. To analyze the model of logistics in the Russian Federation. 3. Development and implementation of improvements to the logistics model by forming a multimodal logistics product for national companies.
Information intelligent system of organization and management of arctic sea cargo transportation
Authors: Sobolevskaya E Yu , Levchenko N G , Glushkov S V 
Published: October 2020

Abstract
To organize, support and manage the process of cargo transportation, taking into account the difficult navigation conditions in the Arctic and Subarctic of Russia, an information intelligent system for organizing and managing sea cargo transportation has been developed: architecture of the information intelligent system; a module for calculating the route between two ports, taking into account the ice situation, based on the A-star algorithm for finding the shortest route between two ports; a module for calculating the cost and the number of travel days for sea cargo transportation, taking into account the ice situation, the modules are developed on the basis of fuzzy logic using a Mamdani fuzzy logic model; a module that, on the basis of the first and second modules, calculates a faster or a more cost-effective route depending on the season, taking into account the current ice situation. To check the adequacy of the Mamdani fuzzy logic model, a sample was formed based on the analysis of data from the captain’s voyage reports. Each voyage report contains information on the navigation conditions on the route, which allowed us to create a sample consisting of information on the actual navigation conditions.
Success Factors for the Transportation Business Strategy During Economic Crisis of SMEs in Thailand
Authors: Potjanajaruwit Pisit 
Published: October 2020

Abstract
The objective of this research was to study the factors of success that affect the operating strategy of the transportation business during the economic crisis of Small and Medium-sized Enterprises in Thailand. Indepth interviews with predefined questions were conducted on a sample of 10 small transport businesses that were selected as successful from the SMEs searching radio program. The results of the study revealed that every entrepreneur decided to start their own business voluntarily. In terms of products and services, each were in different formats and were distinctive and unique. In addition, every small business was affected by the economic crisis. The factors that made them successful were doing things that they were good at, having adaptability, having ability to plan and solve problems, giving importance to their personnel and customers as well as the quality of products and services, not imitating others, and their determination in the business. It was found that most successful small businesses used the top priority planning strategies, followed by complete pre-planning strategies. They also were found not using opportunity-seeking and defensive strategies. Therefore, the interested parties should pay attention to study and develop specific planning strategies which are essential strategies that lead to success. In addition, the success factors of entrepreneurs should be considered as indicators of success and should be made available as information to the general public for improving small Thai enterprises into bigger businesses that can compete at the global level.
Urban transportation planning in the linear city
Authors: Antyufeev A , Antyufeeva O , Ptichnikova G 
Published: October 2020

Abstract
The paper discusses the transportation system planning based on problems and requirements of urban transport system by linear city form. Planning form has an important impact on urban transport characteristics, and urban road network structure. The object under study is the transport infrastructure of Volgograd city (formerly called Tsaritsyn and Stalingrad), the largest industrial center in the South of Russia. The city stretches along the Volga River for almost 100 km. The authors identify the main promising directions for the development of transport infrastructure: development of high-speed transport modes, which will link remote areas of the city with its center; development of radial transport infrastructure directions and the complexity of urban plan morphology from a linear form to a more complex one; establishment of combined transport and engineering corridors; development of pre-railway areas.