bluuebunny/crossref_metadata_2025_split huggingface dataset:
Reproductive Health and Metabolic Parameters in Women with Type 2 Diabetes
Authors: Onea Corina Roxana , Máté Beáta , Cernea Simona 
Published: August 2020

Abstract

Aim: This study evaluated the correlations between metabolic parameters and reproductive health data in women with type 2 diabetes mellitus (T2DM).

Material and methods: In this observational retrospective study, data from the medical records of 324 adult women with T2DM attending their regular diabetes check-ups were collected and analyzed (i.e., anthropometric parameters at first outpatient visit and yearly thereafter, first recorded HbA1c and all HbA1c for the entire follow-up duration, as well as obstetrical/gynecological information).

Results: Age at the diagnosis of T2DM correlated positively with age at menarche (r = 0.21, [95% CI: 0.09, 0.31], p = 0.0002) and age at menopause (r = 0.18 [95% CI: 0.07, 0.29], p <0.01). Age at menarche correlated negatively with mean weight (r = –0.21 [95% CI: –0.31, –0.10], p: 0.0002) and mean BMI (–0.22 [–0.32, –0.11], p <0.0001) over the follow-up time. Patients with shorter time difference between age at menarche and age at onset of T2DM (≤45 years) had higher mean weight (83.8 ± 14.5 kg vs. 78.4 ± 16.0 kg, p = 0.0001), BMI (33.2 ± 5.6 kg/m2 vs. 31.8 ± 5.7 kg/m2, p <0.05), and HbA1c over time (6.9 ± 0.8% vs. 6.6 ± 0.9%, p <0.0001). Women with T2DM with earlier menarche (<12 years old), with irregular menses during their reproductive life, and ≥3 pregnancies had higher overall BMI, but mean HbA1c were not significantly different. However, women diagnosed with T2DM before menopause had a higher mean HbA1c over time (7.1 ± 0.8% vs. 6.7 ± 0.9%, p <0.01).

Conclusion: The BMI correlated with several indicators of reproductive health (earlier menarche, irregular menses, and higher number of pregnancies), while earlier onset of T2DM influenced metabolic control in women with T2DM.
A new method for extracting spanwise vortex from 2D particle image velocimetry data in open-channel flow
Authors: Zhang Peng , Yang Shengfa , Hu Jiang , Li Wenjie , Fu Xuhui , Li Danxun 
Published: August 2020

Abstract
The two-dimensional particle image velocimetry (PIV) data are inevitably contaminated by noise due to various imperfections in instrumentation or algorithm, based on which the well-established vortex identification methods often yield noise or incomplete vortex structure with a jagged boundary. To make up this deficiency, a novel method was proposed in this paper and the efficiency of the new method was demonstrated by its applications in extracting the two-dimensional spanwise vortex structures from 2D PIV data in open-channel flows. The new method takes up a single vortex structure by combining model matching and vorticity filtering, and successfully locates the vortex core and draws a streamlined vortex boundary. The new method shows promise as being more effective than commonly used schemes in open-channel flow applications.
Promoting Sustainable Social Emotional Learning at School through Relationship-Centered Learning Environment, Teaching Methods and Formative Assessment
Authors: Ferreira Marco , Martinsone Baiba , Talić Sanela 
Published: August 2020

Abstract
How to promote social emotional learning (SEL) at school depends largely on teachers. Mostly teachers implement specific programs, but they have difficulties in incorporating SEL into the regular curriculum. The main aim of the paper is to present the conceptual model of sustainable integration of SEL into everyday teaching practices in every subject. This approach has been developed in the project ìLearning to Be: Development of Practices and Methodologies for Assessing Social, Emotional and Health Skills within Education Systemsî. This initiative is based on the premise that the assessment of learning at school should go beyond grading studentsí knowledge and should include practices for observing young peopleís personal growth, social skills, attitudes and other general competences. The novelty of this conceptual approach is associated with integrating SEL standards, formative assessment and classroom instruction into a single sustainability-oriented model. The relationship between SEL standards (ISBE, 2003) and formative assessment strategies established by Wiliam (2011) is described, providing a detailed description of specific classroom activities. The objective of this approach is, therefore, towards building emotionally strong and flexible individuals who can deal with complex challenges through prosocial behavior that encourages human prospering and the attainment of the United Nationsí Sustainable Development Goals.
Straight and Bent Bars Buckling Considered as the Axial Displacement of One Bar End
Authors: Berczyński Stefan , Dunaj Paweł , Grządziel Zenon 
Published: August 2020

Abstract
A new approach has been taken to the problem of straight and bent bar buckling, where bar buckling is considered as a function of axial displacement of one end. It was assumed that the length of a bar being buckled at any instant of buckling is the same as that of a straight bar, regardless of the size of axial displacement of one end of the bar. Based on energy equations, a formula was derived for the value of axial displacement of one bar end or buckling amplitude in the middle of bar length as a function of compressive force. The established relationships were confirmed by simulation tests using the finite element software Midas NFX and by experimental tests.
Work Safety Improvement Within Autonomous Maintenance
Authors: Furman Joanna 
Published: August 2020

Abstract
Employers are under a legal obligation to provide employees with safe and hygienic conditions of work. These conditions are created by environmental factors that depend on the specifics of the enterprise, production technology and used machinery and equipment. A large number of the risks to which employees are exposed is associated with the use of machinery, equipment and working tools (as confirmed by Statistics Poland). Numerous manufacturing companies increasingly use the practice of involving operators, independently from the maintenance department, in the upkeep and maintenance of machinery and equipment in order to increase efficiency. These activities are undertaken within the scope of Autonomous Maintenance (AM), which is one of the essential elements underpinning the TPM system. The activities performed by operators within AM, such as daily inspections, lubrication or simple repairs, reduce the number of machinery breakdowns. Nonetheless, they could be a potential source of risk for employees. Companies applying the traditional division of tasks entrust the performance of such activities to qualified maintenance staff, so the proper identification of risks that takes into account the specificity of the activities performed by operators and the provision of training in the safe organization of work represent a significant feature of safety improvement. Enterprises may adopt multiple solutions in this regard, including the tools and techniques of the concept of Lean Manufacturing.
Optimisation of Logistics Processes Using Simulation Tools
Authors: Kuczyńska-Chałada Marzena , Poloczek Roksana 
Published: August 2020

Abstract
Optimization of production logistics processes through the use of simulation tools brings a lot of benefits to a production company, and thus significantly reduces production costs. Increasing competition resulting from the use of production automation to increase productivity has increased the complexity of production systems that can only be analysed by simulation. Production logistics performs management functions such as planning, motivating, organising and controlling. It does not deal with technological processes, but the organisation of physical delivery and displacement of components and information in the system. An important feature of production logistics is combining supply logistics with distribution logistics. If the production logistics is properly organised, it provides access to all materials and components of a given product during the implementation of a specific order. Simulation tools ensure continuity and rhythm of production after it is started, as well as convenient conditions for using modern internal transport. The article presents the Flexsim simulation tool, which was used to improve production logistics in the studied enterprise. The programme also contributed as an opportunity to improve and shorten production cycles, maintain optimal inventories, select packaging and logistics units, as well as the ability to use automatic identification of raw materials, materials or semi-finished products.
Providing the Ability of Working Remotely on Local Company Server via VPN
Authors: Muc Adam , Muchowski Tomasz , Murawski Lech , Szeleziński Adam 
Published: August 2020

Abstract
Increasingly popular remote work requires the use of modern network technologies to provide employees in a remote location with access to the company’s IT resources. The answer to the needs of remote access to files and server services can be the use of clouds and VPS. However, this involves high costs and requires entrusting the enterprise’s data to the providers of these services. Both for reasons of data security and too high costs, enterprises sometimes cannot use these technologies. The solution to the problem may be the use of encrypted VPN tunneling, which allows the device to be connected at a remote location to the company’s local network and use its resources as if it was connected to the local network with physical transmission medium.
Influence of the Volumetric Expenditure of Air Supplied to the Longwall Through the “Y” Ventilation System on the Location of an Area at the Risk of an Endogenic Fire
Authors: Tutak Magdalena 
Published: August 2020

Abstract
In the case of longwall ventilation, in the underground hard coal mines, a phenomenon related to the migration of a certain amount of the air stream supplied to the longwall deep into goaf zones occurs. One of the wall ventilation systems, in which this phenomenon is quite intense, is the so called “Y” ventilation system. This migration is immensely unfavorable because it can lead to the self-heating process of coal left in a goaf and, consequently, to an endogenous fire. Such a fire is a great threat to both the safety and continuity of operation processes. For this reason, various activities are undertaken to prevent such a fire from occurring in goaf zones. One solution is a method presented in this article. It aims at determining an area in goaf zones, where an endogenous fire may occur. The study focused on the longwall ventilated with the Y system. This area was determined based on two criteria, namely air velocity and oxygen content. The study was carried out for various volumes of air supplied to the longwall. Therefore, the purpose of the study was to develop research methodology and determine the location of an area at the risk of an endogenous fire. The location of this area was determined for three different volume expenditures of air supplied to the longwall ventilated with the Y system.
Influence of the Permeability of the Longwall Goaf Zones on the Location of an Area With Explosive Methane Concentration Levels
Authors: Tutak Magdalena , Palka Dorota 
Published: August 2020

Abstract
One of the basic ventilation hazards and, at the same time most dangerous, in hard coal mines is the methane hazard. During the exploitation process using the longwall system with the breaking down of roof rocks, methane is released into mining excavations from both mined coal and the one left in goaves. Significant amounts of methane also flow from the underworked and overworked seams, through cracks and fissures formed in the rock mass. When accumulated at an explosive concentration level in goves and at an appropriate oxygen concentration level and the occurrence of a trigger (e.g. a spark or endogenous fire), methane may either explode or ignite. These are immensely dangerous phenomena. Therefore, the possibility of their occurrence should be limited. The article presents the results of the research aimed at determining the impact of the permeability of goaf zones on the distribution of methane and oxygen concentration levels in these goaves. The study was carried out for the longwall ventilated with the Y system. The model analysis was conducted, the results of which allowed the authors to determine these distributions. On their basis, both the location and size of the areas in which hazardous methane concentrations could occur were designated. The results are of great practical importance as they indicate areas in goaves where preventive measures should be implemented.
A Generation of Innovative Technical Ideas and Solutions as an Important Component of the KOMAG Strategy
Authors: Malec Małgorzata , Stańczak Lilianna 
Published: August 2020

Abstract
The article presents some strategic aspects of the KOMAG Institute of Mining Technology in the field of creating innovative ideas and innovative technical solutions concerning machinery and devices for mining and preparation of minerals as regards their operational safety, productivity and reliability. Special attention is paid to a process of stimulating innovative ideas in a creative atmosphere, as KOMAG researchers and engineers are encouraged to be open-minded and to think in an unconventional way. Two examples of innovative technical solutions are described in detail, i.e. the water-and-air dust control system and the KOMTRACK haulage system for highly productive longwall systems of a new generation. The article contributes significantly to Innovation Engineering which is an important component of Production Engineering in the scope of generating and implementing innovative solutions. The authors presented an ecosystem of innovations, describing several methods of creating innovative ideas. The article concentrates on a role of Polish research institutes which play a key role in creating and implementing innovative solutions, bridging science and industry. Due to an analysis of different methods of generating innovative technical ideas and solutions, it can be concluded that an idea and a need of generating an innovative solution may appear in the research institute or at the industrial partner’s organization. In the case of the KOMAG multi-year experience and practice industrial partners include not only producers of mining machinery and equipment, but also representatives of mines of minerals. In general an innovative idea is generated in the result of an inspiration from the business environment and then it is transformed into an innovative product or service. The article contains the authors’ practical recommendations as regards a creation of innovative technical solutions. It is ended with a summary of general character and with some final conclusions.
Containerization of Server Services
Authors: Muc Adam , Muchowski Tomasz , Zawadzki Albert , Szeleziński Adam 
Published: August 2020

Abstract
Businesses are increasingly confronted with server-related problems. More and more, businesses are enabling remote working and need to rely on network services. The provision of network services requires rebuilding the network infrastructure and the way employees are provided with data. Web applications and server services use common dependencies and require a specific network configuration. This often involves collisions between network ports and common dependencies’ configuration. This problem can be solved by separating the conflicting applications into different servers, but this involves the cost of maintaining several servers. Another solution may be to isolate applications with virtual machines, but this involves a significant overhead on server resources, as each virtual machine must be equipped with an operating system. An alternative to virtual machines can be application containerization, which is growing in popularity. Containerization also allows to isolate applications, but operates on the server’s native operating system. This means eliminating the overhead on server resources present in virtual machines. This article presents an example of web application containerization.
The Level of Occupational Health and Safety in European Enterprises Providing Transport and Logistics Services in Terms of Quality Management Principles
Authors: Klimecka-Tatar Dorota , Matevž Obrecht 
Published: August 2020

Abstract
Safety and quality management are very important elements of managing production and service processes. It is important not only to manage in itself, but above all to constantly improve processes and constantly strive for excellence. However, continuous improvement of the organization is one of the key principles of quality management, it states that improvement can be obtained from the analysis of existing processes or measurement results. In this paper the level of occupational health and safety in european enterprises providing transport and logistics services in terms of quality management principles. On the basis of the presented results it was found that in large enterprises safety management principles are respected, while in small and medium enterprises the level of safety does not look very promising. An interesting phenomenon was observed in the case of micro-enterprises (family businesses). Research shows that employees know and adhere to the safety principle, but they do not see too much change in improving the level of safety.
Improving the Management of Storage Stock in the Tire Industry Using the Example of a Selected Company
Authors: Żabińska Iwona , Czaplicka-Kalaman Paulina 
Published: August 2020

Abstract
In a well-organized company, stock levels are precisely planned. In order to optimize inventory, various analyses of inventory usage are carried out in terms of them quantity and status. The work presents research on improving the method of managing inventory in the tire industry using the example of a selected company. The company operates warehouses in which tires for passenger cars and vans are stored. Products stored in warehouses ensure high standards. The company focuses on individuality and has a strong market position. The paper presents the results of the ABC and XYZ analysis that allow grouping tires by demand, value and number. The criteria for choosing the ABC/XYZ method are a simple way of use and low financial outlays, in contrast to such methods as MRP or just in time. Furthermore, calculations of such standards as rotation ratios for individual seasons and optimal inventory were carried out. The rotation indicator allows determine which goods are sold quickly and which goods are selling poorly, and therefore the costs associated with their storage are probably higher than from the sale of profits. As a result of the analysis, improvements were made to the inventory management system. The implementation of the proposed methods and tools for inventory management allowed the company to eliminate unnecessary inventories, reduce storage costs and minimize inventory control.
Verification of Work Ergonomics at Selected Workstations on the Assembly Line – Planning Versus Reality
Authors: Mleczko Katarzyna , Jasińska Anna 
Published: August 2020

Abstract
Analysis of working conditions in terms of ergonomics is an increasingly popular topic among industrial enterprises. This is primarily due to the development of departments responsible for maintaining safe and healthy working conditions, but also awareness of the impact of working conditions on maintaining safety and maintaining the rhythm of work. Care for working conditions translates into the possibility of maintaining the level of activities performed, which indirectly affects the quality of final products. Conducting activities in the field of shaping ergonomic working conditions in the context of continuous improvement based on the Deming cycle and the principles of conceptual ergonomics seem to be a key approach to care for work safety. Treating this process as a continuous and looped process gives you the ability to react quickly and predict adverse effects. However, constant control, observation, and analysis of the possibilities of implementing improvement solutions is important. The purpose of the article is to compare ergonomic working conditions at selected work stations with the assumptions and plans developed before launching the assembly line. The research included a comparative analysis of results in the form of ergonomic score obtained from TiCon software, based on MTM, UAS, and EAWS methods. The research was carried out at the turn of 2016-2020 in an automotive company dealing in the production of passenger car drive system components.
Exergoeconomic Analysis for a Two-Shaft Industrial Gas Turbine Engine
Authors: Almutairi Abdulrahman , Alhajeri Hamad , Alenezi Abdulrahman , Zedan Mohamed , Al-Asousi Maha 
Published: August 2020

Abstract
In this work, the performance of a two-shaft industrial gas turbine engine inspired by SGT-750, one of best technology at Siemens, is analyzed thermodynamically and economically. The modelling and analyzing process for the proposed system was executed through a software package called IPSEpro and validated with manufacturers’ published data. Exergy analysis, based thermodynamics laws with mass conservation, provides valuable information about locations, magnitudes and types of wastes energy in the thermal systems. Exergoeconomic analysis, the amalgamation of exergy with economics, is useful tool to appraise the gas turbine engine cost-effectiveness. The Specific Exergy Costing method is selected in exergoeconomic evaluation because it is the most widely used reported in the literature and provides reliable results. The performance of a gas turbine engine was investigated for different load variation and climatic conditions. The result shows that the main source of irreversibilities take place in the combustion chamber, compressor and high-pressure turbine, respectively, which constitute to about 96 % of total exergy destruction. The exergetic efficiency and exergy loss rate of the proposed system are about 38.4% and 11.8% respectively. The combustion chamber has the highest value of cost (1312.9 $/h) among other components and the source losses may attribute to the component performance. The production cost of the gas turbine engine based on exergoeconomic evaluation is 12.1 US$/GJ.
A Software Tool for Automatic Geometry Generation of a Micro Turbine
Authors: Hoffmann Simon P. , Rückert Frank U. , Theis Danjana , Ruffino Alexander G. , Lehser-Pfeffermann Daniel , Hübner Dirk 
Published: August 2020

Abstract
Heat recovery plays an important role in increasing the efficiency of renewable energy facilities like biomass furnaces, solar power plants or biofuel combustion engines. As the overall efficiency of the facilities can be increased by recovering the energy. The available waste heat can be converted directly into mechanical energy, pressure or subsequently converted into electrical energy by coupling the expansions machine with a generator. The waste heat can be converted by Organic Rankine Cycle (ORC). Therefore, an expansion machine, e.g. a turbine is required. Also small amounts of waste heat can be recovered, if so-called micro turbines are used. Design and construction of such micro turbines always follow fixed rules. Aim of this work is to explain the rules how to design a micro turbine. Furthermore, our workflow and a software tool which follows these rules should be presented.