bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sustainable concept of energy management of buildings as an effective tool for green building
Authors: Domanický J , Vranayová Z , Vranay F 
Published: December 2021

Abstract
Nowadays, due to high external temperatures, the topic of cooling is very actual. However, cooling buildings is energy intensive. Therefore, it is necessary to focus on more than one method of cooling. We can say that cooling can be provided in 2 ways. By building services and by architectural design. For existing buildings, we cannot change the shape and orientation of the building. But we can change the composition of structures. Green architecture is often mentioned in this area. Therefore, the aim of this research is to interconnect these two areas and determine the influence of vegetative roof on the radiant cooling and heating systems. This connection shows us how the design will affect the HVAC systems.
Sustainability of green walls
Authors: Halaszova I , Kozlovska M 
Published: December 2021

Abstract
Not long ago, the sustainability of buildings was not taken as a design priority, although it was considered to some extent. The required level of sustainability has risen sharply in recent years, buildings are becoming more self-sufficient, environmental friendly and greener. Towards more attention to green sustainable alternatives in architecture, new solutions for sustainability began to be sought, such as the use of vertical and horizontal surfaces of the building for green facades, the use of roofs for roof greenery, as well as introduction of greenery into building in the form of green walls. Along with the introduction of greenery into the interior comes the new necessary technical solutions, thinking about the overall green wall with respect to the indoor environment and building itself as well as new possibilities of using rainwater, beautify the interior, improving the air etc. However, it is important to perceive a green wall as a living element that must be sustainable, and this is what this article is about. The article focuses on the green walls from the point of examining the available information on this subject in domestic as well as in foreign sources. The results of this article can help to improve understanding of various green walls from different perspectives and compare their view on the green wall in terms of sustainability. The paper helps designers and researchers to orientate in the given topic to create an overview of the different options of the current greenery systems.
Assessment of the effect of shapes of a shaft intake structure using the PIV method
Authors: Bytčanková L 
Published: December 2021

Abstract
The construction of shaft intake structures in Slovakia has increased. The shaft intake structures overcome significant vertical height over short horizontal distance. In their front horizontal section, the water flows with free surface, then in the vertical section the flow changes its direction and character to a pressurized flow. The flow of water in these shaft intake structures is therefore very complicated. A hydraulically suitable design of the intake structure is associated with achieving the required parameters of the small hydropower plant (SHPP), but due to the reduction of project costs, the shapes of shaft intake structures of SHPP are often not correctly hydraulically designed. One of the important aspects is the distribution of flow velocity of these intake structures. Uneven distribution of flow velocity causes negative effects on turbine performance. Therefore, the investigation of the effects of shaft intake structure design on flow velocity distribution has been realized. The velocity field at a shaft intake of a small hydropower plant was investigated on a physical model in a hydraulic laboratory using the PIV (Particle Image Velocimetry) method. The PIV measurements were realized for different shaft heights and proved negative effects of the design on the flow homogeneity in the turbine intake.
Managed Aquifer Recharge (MAR) in areas used for agricultural purposes: the Rye Island pilot study
Authors: Červeňanská M , Mydla J , Šoltész A , Danáčová Z , Kullman E 
Published: December 2021

Abstract
For a long-term retention of water in aquifers and its subsequent use in drier or heavier demand periods, the Managed Aquifer Recharge (MAR) techniques are studied and implemented in 4 pilot areas of the DEEPWATER-CE project. In Slovakia, the pilot study is situated in the Rye Island. A calibrated MODFLOW model is used for a prediction of groundwater level changes caused by the Recharge Dam MAR. Results of the simulations showed that the increased groundwater level caused by the realization and operation of three proposed weirs affects the volume of water infiltrated to the aquifer but does not cause the flooding of the adjacent area.
Drought assessment and prediction for Gidra river, Slovakia
Authors: Čubanová L , Almikaeel W 
Published: December 2021

Abstract
Climate change is affecting every aspect of the world including water resources and water scarcity. Drought is one of many big problems associated with climate change that could occur all over the world. Moreover, hydrological drought is one form of drought that relates to decreased river discharges, below-normal groundwater level, declining the area of wetlands and low water level in lakes or reservoirs. In this study, an assessment of hydrological drought in Gidra river is conducted to characterize dry and normal hydrological years according to Slovak Hydrometeorological Institute (SHMI) Methodology. Furthermore, making benefit of machine learning and artificial intelligence in this field is applicable now, as data of many types are being recorded every day. Deploying machine learning algorithms for the purpose of drought prediction is one way to regulate many operations of water management to prevent irrigation problems. By catching patterns through historical data and deploying machines to learn from those patterns, it is possible to use the values of daily average discharges for January, February, March, and April to correctly predict the hydrological situation in Gidra river whether it is dry or normal, knowing that normal situation refers to wet or normal hydrologically assessed years as the optimal goal in this study is drought assessment and prediction of Gidra river.
Effect of percent air voids content on the deformation properties of the asphalt mixture
Authors: Bokomlasko J , Mandula J 
Published: December 2021

Abstract
Asphalt mixture is a building material with many advantages. Therefore, it is most used in road construction. If the asphalt mixture is laid with the prescribed technology, it can withstand load effects to long-term. It is necessary to take samples that will be subjected to laboratory measurements. There are several laboratory test, for example measurement thickness of the asphalt mixture layers, the aggregate fraction, quantity of binder in the mixture, determination of air void in asphalt mixture layers. Samples taken directly from the construction site are subjected to laboratory tests. This article focuses on one of the laboratory tests and it is determination of air void in asphalt mixture layers. The determination of air void in asphalt mixture layers is test in detail, because this effect has influence on the deformation properties of asphalt mixture layers. Therefore, it was necessary to model of air void in asphalt mixture layers with different degrees air void. On this purpose was use program Abaqus. The results were plotted. This graphs showed that increasing the air void in asphalt mixture layers has effect on the expansion of deformations. This can lead to faster pavement degradation.
Analysis of available shared transport solutions in Krakow
Authors: Grabarz A , Sawicki W 
Published: December 2021

Abstract
Sharing modes of transport in Kraków: in the context of the transport policy of large cities, it is worth noting sharing as an increasingly common method of transport. The policy of sharing: cars, scooters, bicycles and motor scooter has become an important way to complement public transport. The aim of this paper is to analyse the available shared transport modes used by Krakow residents and their impact on the environment, over the last few years. The increase in popularity of available shared transport solutions is due, among other things, to their availability and relatively low cost of use. This solution is a response to the needs of modern cities and has a positive impact on the environment.
Evaluation of the mechanical properties of fluvial coarsegrained soils from dynamic penetration test
Authors: Kučová E , Kuvik M 
Published: December 2021

Abstract
Soil and rock properties are essential inputs for the design of geotechnical structures. But unlike man-made materials, the determination of the characteristic value is not simple, mostly because of the large space variability of the soils and rocks. In many cases, the large spatial variability makes it difficult to collect sufficient ground samples for further laboratory testing so that many tests are performed directly in the field. In Slovakia, the dynamic penetration test (DP) is, among others, a quite popular field test for soil investigation. From the measured data, it is possible to derive relative density (ID) shear (φ
ef) and deformation (E
def) parameters of coarse-grained soils. There are many available correlations between the DP results and geotechnical parameters. Therefore, it is necessary to choose the most appropriate one as it considerably affects the final evaluation. This paper shows the assessment of geotechnical parameters of coarse-grained fluvial soil from the DP results and presents the statistical determination of its characteristic values, which are furthermore compared with the nominal values used in Slovakia.
Measurement and optimization of multi-attribute characteristics in milling epoxy granite composites using rsm and combined ahp-topsis
Authors: ArunRamnath R , Thyla P R 
Published: December 2021

Abstract
Epoxy granite composites with its wide range of applications in machine tool industries are manufactured by molding process and require post cast machining operations to meet the desired dimensional accuracy for assembly of machine tool structures. In this research work, milling of epoxy granite composites are carried out based on the experimental design from Response Surface Methodology (RSM) techniques and further the optimal solutions are determined by a novel hybrid algorithm AHP-TOPSIS. Central Composite Design (CCD) model is applied with three factors-three levels and the measured output responses are thrust force, tangential force and surface roughness. Experimental combinations of 20 different trials are performed using high speed steel end mill cutter of diameter 10 mm with three levels of input parameters: speed; fibre content and feed rate at a uniform depth of cut. The relative importance matrix formulated proved to be highly consistent with its consistency ratio to a maximum of 0.000641 which lies below the higher range of 0.1. Consistency ratio of 0.000641 reveals that the optimal solutions determined will be highly reliable and the decision making is much more judicious. Optimal solution determined from hybrid AHP-TOPSIS methods are: speed 1800 rpm; feed rate 0.03 m min−1 and 0% percent fibre content. Functional relationships among parameters and responses established by RSM are consistent upto 95% and its significance is tested by analysis of variance. Comparison among predicted and experimental values of three measured responses convey that the percentage variations are minimum with up to 2.03% for surface roughness, 2.50% for thrust force and 2.71% for tangential force components. This research work provides a systematic procedure and clear framework for determination of optimal machining conditions by hybrid methodology on the basis of technique for order preference by similarity to ideal solution (TOPSIS) combined with analytical hierarchy procedure (AHP) for attribute weights and further analyzes the influence of machining parameters over measured responses.
Influence of Al203 particle mixed dielectric fluid on machining performance of Ti6Al4V
Authors: R Ranjith , Prabhakar B S Manoj , P K Giridharan , Ramu M 
Published: December 2021

Abstract
In this research work, an attempt was made to machine Ti6Al4V titanium alloy utilizing AA6061/10 Gr composite tool. The composite tool was fabricated using stir casting technique and Al2O3 particles of size 5 μm were incorporated in the dielectric fluid to enhance the machining performance. Experiments were conducted by varying Al203 concentration, pulse on time, current, and pulse off time, and the responses Material Removal Rate (MRR), Tool Wear Rate (TWR), and Surface Roughness (Ra) were recorded. Experiments runs were planned using Taguchi orthogonal array. The results revealed that adding powder increases MRR and TWR owing to the excessive heat generation and bridging effect respectively. The best surface finish was attained due to the increase in spark gap and complete flushing of machined debris. Coating of materials over the machined specimen was observed when the parametric value of Ton was higher than 60 μs under PMEDM conditions. Pits, craters and cracks were observed on the machined topography which was eliminated when 5 g l−1 of Al2O3 particles were added to dielectric fluid. MEIOT technique was utilized for optimization and it was observed that Ton 15 μs, Toff 4 μs and current 7 A and powder concentration of 10 g l−1 results in best machining performance.
SWCNH (Single walled carbon nanohorn) supervises ER (Endoplasmic reticulum) stress through triggering autophagy process of hepatocytes, especially in hepatoma cell line HepG2
Authors: Dong Jinling , Zhang Ying , Xie Zhihong , He Jie , Wu Tiantian 
Published: December 2021

Abstract

Backgrounds. The cellular homeostasis is major maintained by the catabolic pathway of autophagy. Our previous work indicated that SWCNH were associated with endoplasmic reticulum (ER) stress mediated by calcium flow and autophagic response. But, its mechanism was unclear. Methods. The regulation of SWCNH on the calcium flow then autophagy of liver cells were investigated through inducing ER stress with tunicamycin and SWCNH. The calcuim flow was determined using Fluo-3, then autophagy was examined with immunofluorescence or western blot for LC3, Beclin-1, ATG-5, and p62. Moreover, the apopototic protein of Bax and Bcl-2 was detected, too. Results. Tunicamycin-induced ER stress in hepatocytes was related to calcium flow, especially for hepatoma cell line HepG2. Moreover, SWCNH participated in the regulation of endoplasmic reticulum stress-related calcium flow. Besides, SWCNH induced hepatocyte autophagy and inhibited cell apoptosis, then mediated the process of hepatocyte autophagy. Conclusions. Tunicamycin-induced ER stress in hepatocytes was related to calcium flow. Moreover, SWCNH induced hepatocyte autophagy, inhibited cell apoptosis, and participated in the autophagy regulation of hepatocyte, especially for hepatoma cell line.
Effect of aging treatment on corrosion behavior of Mg-4Nd-2Gd-0.5Zr alloy
Authors: Liu Jianxin , Chen Jun , Li Quanan , Chen Xiaoya , Zhang Ziyan 
Published: December 2021

Abstract
The effects of aging time on corrosion behavior of Mg-4Nd-2Gd-0.5Zr alloy in 3.5% NaCl solution were investigated by microanalysis, weight loss test and electrochemical test. The results show that the corrosion rate of Mg-4Nd-2Gd-0.5Zr alloy decreases first and then increases with the extension of aging time. Aging treatment alters the grain size and the distribution of the second phases. The second phases and grain size are the key factors affecting the corrosion rate of magnesium alloy. Among the tested alloys, the T6-8 h alloy shows the lowest corrosion rate, which is mainly attributed to the continuous distribution of second phases restricting the expansion of corrosion, hence the T6-8 h alloy showed the highest corrosion resistance. The corrosion rate of T6-16 h alloy increases obviously because of the growth of the grain size and the segregation of second phases, which accelerates the corrosion progress.
Measurement of elastic properties of materials employing 3-D DIC in a Cornu’s experiment
Authors: Swain Digendranath , Thomas Binu P , Karthigai Selvan S , Philip Jeby 
Published: December 2021

Abstract
Measurement of elastic properties, especially the Poisson’s ratio, utilizing non-contact techniques in a tensile experiment is very challenging. This is primarily due to the poor spatial resolution and the large strain noise inherent to these techniques. The difficulty level increases many folds when Poisson’s ratio of less elongating, stiffer, and/or brittle materials, like ceramics and ablatives, is measured. This paper reports a newer approach that employs 3-D digital image correlation (3-D DIC) in a Cornu’s experiment to enable accurate measurement of elastic properties in a single test. The deflection field obtained from 3-D DIC in the form of anticlastic surfaces during Cornu’s experiment is utilized for determining Poisson’s ratio. In the same experiment, the elastic modulus is estimated using the center point deflection method. The proposed methods are validated with standard materials and extended to newly developed materials. Cornu’s method with 3-D DIC can provide the elastic properties with ease and has many advantages over other conventional techniques.
Wave-based optical coherence elastography: the 10-year perspective
Authors: Zvietcovich Fernando , Larin Kirill V 
Published: December 2021

Abstract
After ten years of progress and innovation, optical coherence elastography (OCE) based on the propagation of mechanical waves has become one of the major and the most studied OCE branches, producing a fundamental impact in the quantitative and nondestructive biomechanical characterization of tissues. Preceding previous progress made in ultrasound and magnetic resonance elastography; wave-based OCE has pushed to the limit the advance of three major pillars: (a) implementation of novel wave excitation methods in tissues, (b) understanding new types of mechanical waves in complex boundary conditions by proposing advance analytical and numerical models, and (c) the development of novel estimators capable of retrieving quantitative 2D/3D biomechanical information of tissues. This remarkable progress promoted a major advance in answering basic science questions and the improvement of medical disease diagnosis and treatment monitoring in several types of tissues leading, ultimately, to the first attempts of clinical trials and translational research aiming to have wave-based OCE working in clinical environments. This paper summarizes the fundamental up-to-date principles and categories of wave-based OCE, revises the timeline and the state-of-the-art techniques and applications lying in those categories, and concludes with a discussion on the current challenges and future directions, including clinical translation research.
Variational quantum reinforcement learning via evolutionary optimization
Authors: Chen Samuel Yen-Chi , Huang Chih-Min , Hsing Chia-Wei , Goan Hsi-Sheng , Kao Ying-Jer 
Published: December 2021

Abstract
Recent advances in classical reinforcement learning (RL) and quantum computation point to a promising direction for performing RL on a quantum computer. However, potential applications in quantum RL are limited by the number of qubits available in modern quantum devices. Here, we present two frameworks for deep quantum RL tasks using gradient-free evolutionary optimization. First, we apply the amplitude encoding scheme to the Cart-Pole problem, where we demonstrate the quantum advantage of parameter saving using amplitude encoding. Second, we propose a hybrid framework where the quantum RL agents are equipped with a hybrid tensor network-variational quantum circuit (TN-VQC) architecture to handle inputs of dimensions exceeding the number of qubits. This allows us to perform quantum RL in the MiniGrid environment with 147-dimensional inputs. The hybrid TN-VQC architecture provides a natural way to perform efficient compression of the input dimension, enabling further quantum RL applications on noisy intermediate-scale quantum devices.
Tits polygons
Authors: Mühlherr Bernhard , Weiss Richard , Petersson Holger 
Published: December 2021

We introduce the notion of a Tits polygon, a generalization of the notion of a Moufang polygon, and show that Tits polygons arise in a natural way from certain configurations of parabolic subgroups in an arbitrary spherical buildings satisfying the Moufang condition. We establish numerous basic properties of Tits polygons and characterize a large class of Tits hexagons in terms of Jordan algebras. We apply this classification to give a “rank

2
2

” presentation for the group of

F
F

-rational points of an arbitrary exceptional simple group of

F
F

-rank at least

4
4

and to determine defining relations for the group of

F
F

-rational points of an an arbitrary group of

F
F

-rank

1
1

and absolute type

D
4

D_4

,

E
6

E_6

,

E
7

E_7

or

E
8

E_8

associated to the unique vertex of the Dynkin diagram that is not orthogonal to the highest root. All of these results are over a field of arbitrary characteristic.
The walking male: activity, locomotor performance and influence of climate in movement of males of an endangered tarantula (Grammostola vachoni) over the reproductive season
Authors: Schwerdt Leonela , Copperi Sofía , Pompozzi Gabriel , Ferretti Nelson 
Published: December 2021

Abstract
In tarantulas, the reproductive season in their natural habitat is characterized by the presence of walking males. Grammostola vachoni is a tarantula from Argentina, and previous studies have reported that the breeding season occurs only in spring. However, walking males are also observed in other months. Thus, our objectives here were to study the dynamics of G. vachoni in the reproductive season, to compare male activity with climate data and to estimate whether temperature affects male locomotor performance. Two peaks of walking male activity were found (from the end of October to December, and in March). The number of walking females registered was low and was also bimodal. No significant differences between the sexes in activity with regard to temperature and atmospheric pressure were observed, but females were more likely to be observed under the highest humidity conditions. The months of the reproductive season were very similar in their climate characteristics. Male locomotor performance was strongly affected by extreme temperatures, and the optimum experimental temperature was higher than the environmental activity temperature. This study suggests a diplochronous cycle for G. vachoni, which might be a historical constraint or might indicate selection.