bluuebunny/crossref_metadata_2025_split huggingface dataset:
Motion Characteristics After Ricochet: An Experimental Investigation
Authors: Chen Guoming , Hu Junhua , Liu An , Feng Jinfu , Hu Qingqing 
Published: November 2020

Abstract
The ricochet behaviour of the air–water trans-media vehicle (AWTMV) during water-entry crossing was experimentally investigated. Three types of small-scale AWTMV including cone, ogive, and flat nose were used in the test. The underwater trajectory, velocity, and inclination angle of projectiles during the ricochet process were obtained using a high-speed camera. The angle change of the AWTMV and the ratio of the residual velocity are introduced. Based on this result, the relationship between the ricochet responses and initial conditions was derived. The results of this study show that (1) a small incident angle and great velocity make the occurrence of ricochet behaviour easier, (2) the stability of the trajectory of projectiles with cone, ogive, and flat nose weakened in turn at the same initial conditions, (3) the angle change and the ratio of the residual velocity are linear functions of the incident angle and velocity.
Parametric Method Applicable in Assessing Breakout Force and Time for Lifting Slender Bodies from Seabed
Authors: Michalski Jan P. 
Published: November 2020

Abstract
The article presents a parametric method applicable in assessing the suction force of a slender body to the seabed, and prognosing the body extrication time. Along with the body weight in water, the information on the suction force is essential for assessing the force needed to lift the object from the seabed. Based on the Foda theory and the resulting integral equation, which relates the maximum suction force with basic parameters of the issue of concern, the parametric method has been developed which can be widely applied in engineering practice of lifting objects. A set of discrete values of parameters selected from the range of typical values for engineering practice was the basis for developing algebraic formulas approximating the integral Foda equation for slender bodies. The included results of tests present the variability of suction force characteristics and the envelopes of maximum forces needed to extricate the body from the seabed.
Limiting Distribution of the Three-State Semi-Markov Model of Technical State Transitions of Ship Power Plant Machines and its Applicability in Operational Decision-Making
Authors: Girtler Jerzy 
Published: November 2020

Abstract
The article presents the three-state semi-Markov model of the process {W(t): t ≥ 0} of state transitions of a ship power plant machine, with the following interpretation of these states: s1 – state of full serviceability, s2 – state of partial serviceability, and s3 – state of unserviceability. These states are precisely defined for the ship main engine (ME). A hypothesis is proposed which explains the possibility of application of this model to examine models of real state transitions of ship power plant machines. Empirical data concerning ME were used for calculating limiting probabilities for the process {W(t): t ≥ 0}. The applicability of these probabilities in decision making with the assistance of the Bayesian statistical theory is demonstrated. The probabilities were calculated using a procedure included in the computational software MATHEMATICA, taking into consideration the fact that the random variables representing state transition times of the process {W(t): t ≥ 0} have gamma distributions. The usefulness of the Bayesian statistical theory in operational decision-making concerning ship power plants is shown using a decision dendrite which maps ME states and consequences of particular decisions, thus making it possible to choose between the following two decisions: d1 – first perform a relevant preventive service of the engine to restore its state and then perform the commissioned task within the time limit determined by the customer, and d2 – omit the preventive service and start performing the commissioned task.
Ultrasonic Detection of the Intravascular Free Gas Phase in Research on Diving
Authors: Kłos Ryszard 
Published: November 2020

Abstract
The article presents a unique atypical application of the sonography technique and a methodological description of the introduction of this technique to research. The Bayesian approach applied to validation of the Doppler method for intravascular detection of the free gas phase instead of typical statistical inference has been demonstrated in the article. It describes the place of this method in the diving research work conducted in the Polish Naval Academy without any detailed analysis of the results achieved in the studies on decompression supported by ultrasonic detection of the free gas phase in venous vessels. It is a commonly held opinion that Doppler ultrasonic detection of the intravascular free gas phase is not a procedure that can be particularly useful in decompression research. The main objection is that detection of the free gas phase in venous vessels is a weak function to predict the presence of the free gas phase in tissues and arterial blood, so this method is not suitable for assessing the risk of decompression. Only a few countries disagree with this commonly held view and use this method to assess the risk of decompression in decompression studies. France has introduced detection of the free gas phase in venous vessels for diving research and then, together with Canada, improved this method, and developed it to a standard form. Based on the published results of the Canadian research, the technique was evaluated at the Naval Academy using statistical methods. The Academy accepted and adopted the results of this research and started to use this method in its own research on decompression over 25 years ago and continues to use it to great effect.
Identification of Alternative Landfill Site Using QGIS in a Densely Populated Metropolitan Area
Authors: Sheoran Savita Kumari , Parmar Vinti 
Published: November 2020

Abstract
Appropriate landfill site selection for disposal of solid waste is a very complicated assignment, as it needs multicriteria analysis of various parameters. In this study, we have used QGIS for identification of alternative landfill site in Gurugram district, a satellite city of New Delhi. Various criteria are analysed for selecting the landfill sites. Weight and rank are assigned to the criterion such as road networks, presence of water bodies, residential locations, and depth of the underground water table by using the Analytic Hierarchy Process (AHP). Five possible landfill sites have been identified for solid waste disposal based upon the AHP method analysis and overlay analysis in GIS tool in Gurugram district. The methodology used in this paper is very efficient for performing multicriteria analysis and can be generalised for selecting landfill sites in other areas with similar demographics.
How Does the Romanian State Support the Increase of Energy Efficiency of Buildings by Using Public Funds?
Authors: Barbu Liliana 
Published: November 2020

Abstract
The issue of improving the energy efficiency of buildings in Romania is one of interest, both for the state authorities and for the population. The general purpose is to encourage the production of thermal energy and domestic hot water through the use of renewable energy sources. This is part of the EU's long-term objective of decarbonising the existing and inefficient European real estate park. In order to start renovating the existing buildings on the national territory, considerable financial resources are needed which the owners should have. The Romanian state, through the Agency for Environmental Protection, comes to the support the interested persons by granting financial support within the “Green House” Programs. The present paper includes an analysis of the four “Green House” programs and the public funds used to increase the energy efficiency of the buildings.
Financial Spending Behavior Patterns Based on Education, Gender and Age
Authors: Bugheanu Alexandru-Mihai , Străchinaru Adina-lonela 
Published: November 2020

Abstract
This paper develops an analysis in the field of financial spending behavior. The study will focus particularly on habits based on education level, gender and age. Towards this objective, we will present and test three hypotheses based on the education level for the respondents, the differences between males and females, and the correlation between the spending behavior and age. Unlike most of the previous studies, this analysis has a double approach. First of all, it presents several findings regarding differences in terms of spending behaviour and also conclusions in terms of explaining financial patterns. We contribute to the literature examining the concern over the spending behaviour of individuals from Romania. Furthermore, this contribution is focused on understanding and explaining the results and their influence using statistical analysis.
The Impact of the Current Crisis Generated by the COVID-19 Pandemic on Consumer Behavior
Authors: Oana Duralia 
Published: November 2020

Abstract
It is well known that the extent to which the supply manages to adapt to the demands and changes in consumer behavior is key to the success of a business or, in the current economic context, to the survival of a business. This paper aims to analyze the manner in which the perception and attitude of the individual towards risk causes major changes in its purchasing behavior and, implicitly, to identify the tools of marketing with a favorable impact on the consumer, in the economic and social context generated by the Covid-19 pandemic. Although the fear and concern generated by the current economic and social crisis are visibly affecting both social behavior in general, and purchasing behavior in particular, finding effective ways to inform and communicate with consumers to facilitate their access to up-to-date and highly accurate information is essential both to meet the growing need for information in conditions of risk and uncertainty, and to guide the purchasing decision towards the best alternative for the consumer.
Cell Extractor
Authors: Gheorghe A.C. 
Published: November 2020

Abstract
The study aims for the development of a system for cellular extraction, developed at the level of an experimental model, with the help of which the user can generate a series of sessions of cellular extraction from the cultures of specific cells. To move to the prototype level, the system that will materialize in an specialized equipment for cell extraction and inter / intra-cell injection needs a developed user interface, so that the equipment as a whole is easy to use by the human operator. The present project provides a viable technical interfacing solution for the above mentioned equipment, using the Raspberry Pi hardware resources and the Python C. software resources. Demonstrating the capability of the Raspberry Pi - Python technical tandem for the biomedical equipment to be built is the essence of this project, and the further development of a specialized user interface is a natural step.
Office-made 4% Albendazole Cream is an Effective Alternative Therapy for Cutaneous Larva Migrans: A Report of Three Cases
Authors: Mulia Rizki Citra , Djawad Khairuddin , Adriani Anni , Idrus Idrianti 
Published: November 2020

Abstract

Introduction. Cutaneous larva migrans (CLM), commonly called creeping eruption, is a parasitic skin disorder caused by the invasion of larva to the skin. This disease classically presents as serpiginous lesions. Larva frequently originates from fecal material of cats and dogs. The pruritus is usually intense and if not treated might disrupt activity, lead to secondary infection, and extend to other regions. Oral and topical antihelminthic agents are the first-line treatment with excellent clinical response. However, they are not always readily available, as is it the case in our region. We attempt to tackle this limitation by formulating an office-made albendazole cream. This report shows the clinical efficacy of our regimen in three cases of CLM.

Case Report. We report three cases of CLM diagnosed through history taking and clinical presentation. All cases were treated with topical office-made albendazole as requested by the patients and due to resource limitation. The topical preparation was made by dissolving 400 mg albendazole tablet into sterile water and mixing it with Vaseline to form 4% cream. Three times daily application for seven days led to excellent clinical response.

Conclusion. Our 4% office-made albendazole cream was shown to be effective in treating CLM. Thus, this simple and practical preparation may serve as an alternative treatment for CLM.
A case of Giant Perifollicular Fibroma - a Diagnostic Challenge
Authors: Rao Raghavendra , Srinivas Srilatha Parampalli , Shetty Varsha M. 
Published: November 2020

Abstract
Perifollicular fibroma (PFF) is a rare proliferative lesion originating from the perifollicular connective tissue sheath. It may be congenital or acquired manifesting as skin colored to pink, asymptomatic papules of 1-5 mm in size. They are commonly distributed in the head and neck region. Multiple PFFs may be associated with internal malignancy or as a part of Birt-Hogg-Dube syndrome. Histopathology serves as an essential tool in clinching the diagnosis. Herein we report a case of giant congenital PFF.
Controlling the Operation of a Ship’s Electric Power Supply Using Fuzzy Controllers
Authors: Żak Bogdan , Hożyń Stanisław 
Published: November 2020

Abstract
The paper presents dynamical models of controlling voltage and frequency of ship’s electric supply set. The simulation model of synchronous generator, implemented in Matlab/Simulink, was described. For the developed simulation model, developed control systems using fuzzy controllers type P and PD were presented. Simulation research for resistance, inductive and capacitive loads were carried out for these regulators. Sample results of simulation tests are presented in the form of voltage waveforms at the output of the generator and rotational speed of the internal combustion engine for various load conditions. The conducted tests allow to assess the quality of the control process using fuzzy controllers and thus ensure the selection of the optimal solution.
Nonhomogeneus Generalisations of Poisson Process in the Modeling of Random Processes Related to Road Accidents
Authors: Grabski Franciszek 
Published: November 2020

Abstract
The stochastic processes theory provides concepts, and theorems, which allow to build the probabilistic models concerning accidents. “Counting process” can be applied for modelling the number of road, sea, and railway accidents in the given time intervals. A crucial role in construction of the models plays a Poisson process and its generalizations. The nonhomogeneous Poisson process, and the corresponding nonhomogeneous compound Poisson process are applied for modelling the road accidents number, and number of people injured and killed in Polish roads. To estimate model parameters were used data coming from the annual reports of the Polish police.
The Correlation Between CO2 Emissions and GDP in a Sustainable Development Framework Using Kuznets Environment Curve
Authors: Cosma Ioana Gabriela , David Katalin Gabriela , Antonescu Daniela , Dumiter Florin Cornel , Jimon Ștefania Amalia 
Published: November 2020

Abstract
After 1990, the problem of finding econometric models to assess the influence of economic development on the environment becomes a global goal, a central element of regional, national and Community policies. A perception on the evolution of global climate change and on the impact of human activity on them has been determined by the hypothesis that in the early stages of economic development, pollution and incomes are growing almost simultaneously, and beyond a certain level of incomes, the trend is reversing, therefore at high levels of incomes and economic growth occur improvements in environmental conditions. In this paper, we aim to analyze the relationship between the level of pollution (CO2 emissions) and revenues (GDP per capita) using the Kuznets Environmental Curve (EKC). To apply the econometric model, two indicators were used: CO2 emissions and GDP per capita, using a panel analysis for the period 2000 - 2016, which included 31 European countries and 527 observations. The article contributes to the development of econometric applications based on panel data and the Kuznets Environmental Curve.
Ease of Doing Business and Capital Market Development in a Demand Following Hypothesis: Evidence from ECOWAS
Authors: Nageri Kamaldeen Ibraheem 
Published: November 2020

Abstract
Capabilities of African businesses in a transformative role in solving the continent‘s challenges are underestimated and misunderstood. This study examined ease of doing business and financial development from a demand following hypothesis in the West African sub-region, employed Structural Equation Model covering the period of 2004 - 2017. Ten ease of doing business indicators and five distinct financial (capital market) development variables from the World Bank database were used. Findings indicate weak demand following the hypothesis of capital market development: positive and negative, depending on the measure of capital market development from the ease of doing business for West African countries majorly because of inadequate electricity. The indirect effect of the construction permit, property registration, access to credit, minority investors‘ protection and cross-border trading are indirectly significant to capital market development while starting a business, tax-paying, contract enforcement and settling insolvency are insignificant. The study recommended roadshow by West African capital markets to improve the listing of companies and the government should improve on the electricity supply.
Causality Analysis of Disaggregated FDI Inflows on Sectorial Growth in OECD Area
Authors: Ogbeifun Lawrence , Shobande Olatunji Abdul 
Published: November 2020

Abstract
This article revisits the link between disaggregated Foreign Direct Investment (FDI) inflows and sectorial growth using the panel dataset of 25 Organisation for Economic Co-operation and Development (OECD) countries for the period 1990 to 2017. It adopted the panel fixed effect and Feasible Generalized Least Squares Approach in its analysis. The findings show that disaggregated FDI inflows have the potential to improve growth in the OECD area with adverse effects on domestic investment and inflationary pressure. Additionally, the results further indicate that disaggregated FDI inflows have a positive and significant relationship on the service and manufacturing sector but with no evidence shown on the agricultural industry. Thus, the study concludes that efficient reallocation of FDI resource(s) among sectors will not only boost output growth but also impact on the real economy. However, the necessary policy strategy to regulate this inflow is vital to mitigate its negative impact on domestic investment and inflation pressure.
The Accuracy of the Navigational Accelerometer with a Nonlinear Metrological Model in Operating Conditions
Authors: Chernyak Mycola , Kolesnyk Vadym 
Published: November 2020

Abstract
A mathematical model of the error of the navigational accelerometer caused by the nonlinearity of its metrological model, taking into account the influence of vibration, was developed. The method of experimental estimation of the vibration error based on the developed model was proposed. The main idea of the method is to evaluate parameters of the developed model during static tests in the terrestrial gravitational field and to calculate error according to the specific vibration characteristics – the amplitude in the case of harmonic vibration profile or the frequency band and the power spectral density in the case of random vibration. The effectiveness of the proposed method has been tested using three types of navigation accelerometers in comparison with the results of classical dynamic testing in various vibration conditions (harmonic, white noise, etc.).
Vibration Properties of Steel Constructed Hospital Elevated Helipads
Authors: Krzymień Wiesław , Szmidt Michał , Cieślak Sławomir 
Published: November 2020

Abstract
Polish Medical Air Rescue helicopters facilitate the rapid transport of patients to large hospitals. The requirements of the space around the helipad and the safety of flight operations mean that hospitals closer to city centers create more elevated helipads than ground-based helipads. The helipads can vary in the way they are constructed and located - depending on the possibilities offered by hospital buildings and their surroundings.
Vibroacoustics Laboratory of the Institute of Aviation measured the vibration properties of some elevated helipads. The goal of this research was to determine the vibration properties of the helipads itself and the transmission of vibrations to the construction of the helipads, the building and its equipment caused by the landing and taking-off of a helicopter.
This article presents some of the results of measurements of vibrations of steel constructed elevated helipads with the use of a modal hammer and while landing and taking-off of a helicopter, as well as comparison of the vibration properties concerning various elevated concrete helipads.
σ-Continuous Functions and Related Cardinal Characteristics of the Continuum
Authors: Banakh Taras 
Published: November 2020

Abstract
A function f : X → Y between topological spaces is called σ-continuous (resp. ̄σ-continuous) if there exists a (closed) cover {Xn
}
n
∈
ω
of X such that for every n ∈ ω the restriction f ↾ Xn
is continuous. By 𝔠
σ
(resp. 𝔠¯σ)we denote the largest cardinal κ ≤ 𝔠 such that every function f : X → ℝ defined on a subset X ⊂ ℝ of cardinality |X| <κ is σ-continuous (resp. ¯σ-continuous). It is clear that ω
1 ≤ 𝔠¯

σ
≤ 𝔠
σ
≤ 𝔠.We prove that 𝔭 ≤ 𝔮0 = 𝔠¯

σ
=min{𝔠
σ
, 𝔟, 𝔮 }≤ 𝔠
σ
≤ min{non(ℳ), non(𝒩)}.
Hahn-Banach and Sandwich Theorems for Equivariant Vector Lattice-Valued Operators and Applications
Authors: Boccuto Antonio 
Published: November 2020

Abstract
We prove Hahn-Banach, sandwich and extension theorems for vector lattice-valued operators, equivariant with respect to a given group G of homomorphisms. As applications and consequences, we present some Fenchel duality and separation theorems, a version of the Moreau-Rockafellar formula and some Farkas and Kuhn-Tucker-type optimization results. Finally, we prove that the obtained results are equivalent to the amenability of G.
Compositions of ϱ-Lower Continuous Functions
Authors: Kamińska Anna , Kowalczyk Stanisław , Turowska Małgorzata 
Published: November 2020

Abstract
In the paper some properties of compositions of ϱ-lower continuous functions are presented. We will show conditions for a function and for a homeomorphism f : I → I under which g ◦ f is ϱ-lower continuous for each ϱ-lower continuous function g : I → 𝕉. Some relevant properties will be discussed.
Points of Continuity of Quasi-Continuous Functions
Authors: Neghaban Marzieh , Mirmostafaee Alireza Kamel 
Published: November 2020

Abstract
We study points of joint continuity of multi-variable separately quasi-continuous functions which are continuous with respect to one variable. We will show that the assumption of complete regularity in the paper of V. Maslyuchenko et al in ”Tatra Mt. Math. Pub. 68, (2017), 47–58” can be removed in some situations. Moreover, we use a topological game argument to prove that the set of points of continuity of functions with closed graph into ωΔ-spaces is a Gδ
subset of its domain provided that its domain is a W-space.