bluuebunny/crossref_metadata_2025_split huggingface dataset:
Modeling optimal vaccination strategy for dengue epidemic model: a case study of India
Authors: Dwivedi Ananya , Keval Ram , Khajanchi Subhas 
Published: July 2022

Abstract
Dengue fever is a mosquito-borne infectious disease which is transmitted through Aedes aegypti mosquitoes. It is one of the major global health issues in the tropical and subtropical regions of the world. Its dynamics are very complicated owing to the coupling among multiple transmission pathways and various components in pathogen. Due to absence of proper medicine or vaccination, mathematical modeling plays an important role in understanding the disease dynamics and in designing strategies to control the spread of dengue virus. In this paper, we studied a non-linear vector-host model to investigate the transmission dynamics of dengue virus which can be controlled by vaccination as well as treatment. Analysis of model start with the basic reproduction number

R

0

, when it is less than one, the system become locally asymptotically stable about the virus-free equilibrium point. We calibrated our proposed model corresponding to transmission of dengue virus using real data for six Indian states, namely Tamil Nadu, Kerala, Delhi, Gujarat, Rajasthan and Karnataka by using the least square method. Moreover, we performed normalized forward sensitivity analysis of the basic reproduction number and obtained that mitigating the disease transmission rate of mosquito and human population is the most important factor in achieving dengue control. Finally, an objective functional has been developed to minimize the cost of the vaccination and solved with the aid of the Pontryagin’s Maximum Principle. The implementation of the optimal treatment policy shows a significant reduction of the hospitalized individuals as well as infected individuals. We then performed extensive numerical simulations to validate our theoretical analysis with aid of the estimated model parameters.
Detecting primordial features with LISA
Authors: Fumagalli Jacopo , Pieroni Mauro , Renaux-Petel Sébastien , Witkowski Lukas T. 
Published: July 2022

Abstract
Oscillations in the frequency profile of the stochastic gravitational wave background are a characteristic prediction of small-scale features during inflation. In this paper we present a first investigation of the detection prospects of such oscillations with the upcoming space-based gravitational wave observatory LISA. As a proof of principle, we show for a selection of feature signals that the oscillations can be reconstructed with LISA, employing a method based on principal component analysis. We then perform a Fisher forecast for the parameters describing the oscillatory signal. For a sharp feature we distinguish between the contributions to the stochastic gravitational wave background induced during inflation and in the post-inflationary period, which peak at different frequencies. We find that for the latter case the amplitude of the oscillation is expected to be measurable with < 10% accuracy if the corresponding peak satisfies h
2ΩGW ≳ 10-12-10-11, while for inflationary-era gravitational waves a detection of the oscillations requires a higher peak amplitude of h
2ΩGW, as the oscillations only appear on the UV tail of the spectrum. For a resonant feature the detection prospects with LISA are maximised if the frequency of the oscillation falls into the range ω
log = 4 to 10. Our results confirm that oscillations in the frequency profile of the stochastic gravitational wave background are a worthwhile target for future detection efforts and offer a key for experimentally testing inflation at small scales.
Evaluation of the performance of the CCD236 swept charge devices in lunar orbit using in-flight data
Authors: Jones L.S. , Crews C. , Endicott J. , Holland A.D. 
Published: July 2022

Abstract
India’s Chandrayaan-2 Large Area Soft X-ray Spectrometer (CLASS) employs 16 CCD236 Swept Charge Devices (SCDs) similar in structure to Charge Coupled Device (CCD) image sensors. The CCD236 permits X-ray detection over a large surface area, intended to improve low flux performance, with simplified control interfaces and improved warm temperature performance. These devices were the subject of ground testing and performance evaluation before flight. Data that was recently made available by the Indian Space Research Organisation (ISRO) has permitted the analysis of the performance of the CLASS SCDs after over a year of operations around the Moon. Of particular interest is the change in device performance and behaviour during transit and in lunar orbit. Preliminary analysis has indicated that device FWHM, representing the aggregate of different noise sources, has increased in line with predictions based on ground irradiation and testing.
Using machine learning for particle identification in ALICE
Authors: Graczykowski Łukasz Kamil , Jakubowska Monika , Deja Kamil Rafał , Kabus Maja 
Published: July 2022

Abstract
Particle identification (PID) is one of the main strengths of the ALICE experiment at the LHC. It is a crucial ingredient for detailed studies of the strongly interacting matter formed in ultrarelativistic heavy-ion collisions. ALICE provides PID information via various experimental techniques, allowing for the identification of particles over a broad momentum range (from around 100 MeV/c to around 50 GeV/c). The main challenge is how to combine the information from various detectors effectively. Therefore, PID represents a model classification problem, which can be addressed using Machine Learning (ML) solutions. Moreover, the complexity of the detector and richness of the detection techniques make PID an interesting area of research also for the computer science community. In this work, we show the current status of the ML approach to PID in ALICE. We discuss the preliminary work with the Random Forest approach for the LHC Run 2 and a more advanced solution based on Domain Adaptation Neural Networks, including a proposal for its future implementation within the ALICE computing software for the upcoming LHC Run 3.
Symmetry-induced many-body quantum interference in chaotic bosonic systems: an augmented truncated Wigner method
Authors: Hummel Q , Schlagheck P 
Published: July 2022

Abstract
Although highly successful, the truncated Wigner approximation (TWA) does not account for genuine many-body (MB) quantum interference between different solutions of the mean-field equations of a bosonic MB system. This renders the TWA essentially classical, where a large number of particles formally takes the role of the inverse of Planck’s constant ℏ. The failure to describe genuine interference phenomena, such as localization and scarring in Fock space, can be seen as a virtue of this quasiclassical method, which thereby allows one to identify genuine quantum effects when being compared with ‘exact’ quantum calculations that do not involve any a priori approximation. A rather prominent cause for such quantum effects that are not accounted for by the TWA is the constructive interference between the contributions of symmetry-related trajectories, which would occur in the presence of discrete symmetries provided the phase-space distribution of the initial state and the observable to be evaluated feature a strong localization about the corresponding symmetry subspaces. Here we show how one can conceive an augmented version of the TWA which can account for this particular effect. This augmented TWA effectively amounts to complementing conventional TWA calculations by separate truncated Wigner simulations that are restricted to symmetric subspaces and involve weight factors that account for the dynamical stability of sampling trajectories with respect to perpendicular deviations from those subspaces. We illustrate the validity of this method at pre- as well as post-Ehrenfest time scales in prototypical Bose–Hubbard systems displaying chaotic classical dynamics, where it also reveals the existence of additional MB interference effects.
Field theory for zero temperature soft anharmonic spin glasses in a field
Authors: Urbani Pierfrancesco 
Published: July 2022

Abstract
We introduce a finite dimensional anharmonic soft spin glass in a field and show how it allows the construction a field theory at zero temperature and the corresponding loop expansion. The mean field level of the model coincides with a recently introduced fully connected model, the KHGPS model, and it has a spin glass transition in a field at zero temperature driven by the appearance of pseudogapped non-linear excitations. We analyze the zero temperature limit of the theory and the behavior of the bare masses and couplings on approaching the mean field zero temperature critical point. Focusing on the so called replicon sector of the field theory, we show that the bare mass corresponding to fluctuations in this sector is strictly positive at the transition in a certain region of control parameter space. At the same time the two relevant cubic coupling constants g
1 and g
2 show a non-analytic behavior in their bare values: approaching the critical point at zero temperature, g
1 → ∞ while g
2 ∝ T with a prefactor diverging at the transition. Along the same lines we also develop the field theory to study the density of states of the model in finite dimension. We show that in the mean field limit the density of states converges to the one of the KHGPS model. However the construction allows a treatment of finite dimensional effects in perturbation theory.
Influence of road conditions on the values of longitudinal acceleration during braking of a tourist coach
Authors: Łagowski P , Stańczyk T , Szumska E , Zuska A , Grabski P , Jaśkiewicz M , Jurecki R , Kurczyński D 
Published: July 2022

Abstract
The paper aims to analyse the longitudinal acceleration of a tourist coach on various road pavements. As part of the experimental research, braking tests were carried out at a speed of 30 km/h and acceleration to a speed of 30 km/h. The tests were carried out on four types of pavement, i.e. dry and wet asphalt and dry and wet concrete. The article describes the impact of road conditions on the braking and acceleration performance on selected road pavement types. To increase the reliability of the test results, ten tests were carried out for each tested pavement. Based on the test results, graphs of braking decelerations and accelerations during accelerating the vehicle as a function of time. This allowed for statistical analysis of the recorded decelerations and accelerations.
IR spectroscopy analysis of skid marks for vehicle equipped with ABS considering slip ratio
Authors: Sys E , Gosławski Ł. , Mrowicki A , Głogowski M , Madziara S , Droś B , Zakrzewicz W , Kubiak P 
Published: July 2022

Abstract
Skid marks are an important source of information for road accident investigators. Up till now, analyzing them was a difficult task when ABS equipped vehicles are considered. Authors managed to solve this issue using IR spectroscopy. There are several factors to consider when investigating brake marks and one of them is slip ratio that was taken into account in this paper. Results show that for slip of 10% and more, IR spectroscopy technology was successful at revealing skid marks.
Airborne sound transmission in fluted PVC panels-properties of materials and structures
Authors: Kopania JM , Zakrzewicz W , Kubiak P , Mrowicki A , Głogowski M , Gralewski J , Bogusławski G , Wójciak K , Gaj P 
Published: July 2022

Abstract
Authors present a study on transmission loss and absorption of corrugated PVC panels. Tests were conducted in reverberation room and it has been proven, both theoretically and experimentally, that there is a relationship between the panel type and its transmission loss and absorption. Panel size and thickness was also taken into consideration during testing procedure. Analyses also show that the Hansen model was not perfectly accurate when predicting the transmission loss for some of the tested samples.
Study of lateral acceleration of a Ford Transit car on various road surfaces
Authors: Kurczyński D , Łagowski P , Stańczyk T , Szumska E , Zuska A , Grabski P , Jaśkiewicz M , Jurecki R 
Published: July 2022

Abstract
The measurement of car acceleration in time can be used to assess driving styles and safety behaviours of drivers. The values of lateral acceleration of the car can be an indication of the driver’s aggressive driving style and tendency for risky behaviour. If the lateral acceleration is too high, it may affect the car’s stability and potentially cause it to roll over. The paper outlines the results of the lateral acceleration analysis of a Ford Transit car driving in a circle and in the attempt to change two driving lanes. The tests were conducted in driving practice areas. Measurements were taken for the test vehicle driving in circles with maximum attainable velocity, and changing two driving lanes with pre-specified velocity. The tests were conducted on asphalt and concrete surfaces, in dry, wet and icy conditions. The purpose of the tests was to determine the maximum lateral acceleration of the analysed vehicle. The impact of the surface condition on the lateral acceleration of the test vehicle was also determined. The obtained results can be used as threshold values to assess driving style, and to analyse causes of accidents taking into consideration the condition of the road surface.
Road testing of lateral acceleration in urban bus
Authors: Szumska E M , Stańczyk T L , Zuska A , Grabski P , Jaśkiewicz M , Jurecki R , Kurczyński D , Łagowski P 
Published: July 2022

Abstract
Lateral acceleration is one of the parameters used to assess a driver’s behaviour and the comfort of urban bus passengers. Because of its purpose, a city bus is a vehicle designed to transport large numbers of people over relatively short distances. The specific driving conditions require constant stopping and accelerating. Lateral acceleration values collected in selected road manoeuvre tests or performance tests conducted in real traffic conditions will determine the lateral vehicle movement dynamics. This paper presents the results of lateral acceleration in a urban bus, obtained during experimental studies in selected road manoeuvres on various surfaces. The surface condition and type do not substantially affect the lateral acceleration when driving on a circular track. During test drives on a circular track, the range of lateral acceleration amounts to 5.56÷7.37 m/s2. The lateral acceleration obtained during double lane change attempts amounted to 2.84÷4.42 m/s2. The maximum lateral acceleration values achieved by the urban bus on a dry and wet asphalt surface are similar.
Experimental testing of longitudinal acceleration in urban buses
Authors: Szumska E M , Stańczyk T L , Zuska A , Grabski P , Jaśkiewicz M , Jurecki R , Kurczyński D , Łagowski P 
Published: July 2022

Abstract
A vehicle’s longitudinal acceleration is one the parameters that characterize a vehicle’s motion dynamics and used, among others, to assess the comfort of public bus passengers. Rapid acceleration and braking performed by urban bus drivers can be deemed by passengers as uncomfortable and dangerous in some situations, especially for standing passengers. This paper presents an analysis of a public bus’s longitudinal acceleration recorded during extreme acceleration and braking attempts. The experimental tests were conducted on dry and wet asphalt and concrete surfaces. The test results allow for the statement that lateral acceleration depends largely on the road’s surface and its type. The maximum longitudinal acceleration values during rapid acceleration, depending on the surface, are within the narrow range of 2.18-2.81 m/s2. During braking, a public bus’s minimum longitudinal acceleration was within the range of -5.58÷-8.54 m/s2.
Frontal collision simulation in laboratory conditions
Authors: Frej D , Jaśkiewicz M , Kubiak P , Zuska A , Więckowski D 
Published: July 2022

AbstractThe article presents the displacement of individual body parts of volunteers during a controlled crash test at low speed. The crash test stand used is equipped with a vehicle seat with standard seat belts, which moves along the ramp rails. The stand enables both front, side and rear crash tests. The stand enables crash tests from 5 km/h to 20 km/h. The aim of the research is to compare the displacements of individual parts of the volunteers’ body, taking into account the division into sex. A study carried out on 130 volunteers (80 men and 50 women), at a collision speed of 15 km/h, showed slight differences in the trajectory of the volunteers’ head movement. Before the study, the volunteers were measured and weighed, and then assigned to the appropriate population percentile. Volunteers were classified into a given percentile group on the basis of the mean of 15 anthropometric dimensions of individual body parts. The obtained results are the basis for building a physical model of a dummy.
Military special vehicle multifunctional seat as an element of vehicle passive safety
Authors: Wróbel T , Szudrowicz M , Luty W , Seńko J 
Published: July 2022

Abstract
Road safety depends on the interaction in the human - vehicle - road system. The proper functioning or condition of each of these three elements is a prerequisite for ensuring the maximum possible level of safety. The most important requirement that is placed on special vehicles is to ensure crew protection during the implementation of operational tasks. Unfortunately, often when putting operational tasks overriding during designing vehicles, aspects related to driving comfort are ignored. The article presents a proposal for the description of light construction of seats for the crews of special vehicles, which, apart from the functions related to the ergonomic use of seats by the crew, in terms of safety ensure a high probability of protection of health and life of the crews during a collision or near detonation of an explosive charge. Proposed modular structure of the seats, in addition to the repeatability of elements, which reduces production costs and easy configuration of seats with various functions, will also contribute to a faster process of restoring their functionality in the event of damage. Modules should be selected and developed in such a way that they can be used in various configurations of seats, the functions of which can be determined due to: location in the vehicle, i.e. driver’s, troops, system operators’ seats, installation method, i.e. to the wall, floor, ceiling, direction assembly, i.e. side mount, rear mount, bottom mount.
Comparison of driver awareness in real traffic and driving on a simulator
Authors: Beňuš J. , Poliak M. 
Published: July 2022

Abstract
A driver’s awareness is a critical aspect that must be closely monitored at all times. This article proposes a number of experiments that will be carried out in the near future, the findings of which may aid in improving the existing condition. The authors feel that the results of individual measurements can help to improve road freight transportation safety. Furthermore, the contribution focuses on driver drowsiness as a significant factor and mechanism of major and fatal traffic accidents, as well as extensive damage to goods or property in road freight transit. Among other things, detection of driver drowsiness was determined. The individual measurements are described and the result of a driver on the simulator are compared with a motorist driving in real traffic. With this information obtained from the individual measurements, we can evaluate number of driver mistakes and different signs of tired behaviour per one shift and then we could be able to estimate a maximum driving duration of one day for twenty-four hours day.
Knowledge centre for transport accessibility and mobility of people with special needs using individual transport modes
Authors: Jackowski J , Gidlewski M , Posuniak P 
Published: July 2022

Abstract
At the Military University of Technology in Faculty of Mechanical Engineering has been estabilished a Knowledge centre for transport accessibility and mobility of people with special needs (PwSN). The main aim of the Centre’s activities is to extend issues of universal design and to develop, promote and disseminate innovative product solutions and universal service standards leading to increased mobility and improved road safety for PwSN using personal transport. An additional aim is to support teaching staff in preparation for education and in the implementation of training activities in the field of universal design, counteracting the exclusion of PwSN. The activities of the Centre involve the Faculty of Mechanical Engineering, the Institute of Psychology at Cardinal Stefan Wyszyński University and the Motor Transport Institute. The article presents in detail the intentions and expected results of the activities carried out by the Centre. It is assumed that the Centre’s activities will make it possible to develop and disseminate original solutions of systems and devices facilitating and supporting the use of individual means of transport by PwSN.
Lateral acceleration of passenger vehicle in roundabouts in term of cargo securing
Authors: Kuba O. , Jagelcak J 
Published: July 2022

Abstract
In today’s modern infrastructure, roundabouts are found in almost every city, which makes them impossible to avoid. Roundabouts with a radius of up to 15 m generate high accelerations even when traveling at average speeds. For this reason, it is essential to analyze the events that occur when passing through such roundabouts. In the research, we have performed a complex analysis of the accelerations on the x, y and z-axis for five passes through five different roundabouts, with a focus on the vehicle dynamics. This helped us to understand how the vehicle behaves when crossing a roundabout, as well as what accelerations and forces are affecting the cargo. Therefore, the paper is comparing data from two sensors that were mounted on various parts of the vehicle. The first sensor was mounted on the dashboard and the second on the roof of the vehicle. What is more, we found that the Y-axis accelerations, which are the most important for the analysis of vehicle dynamics in roundabouts, are not affected by the change in sensor location. In addition, we performed an acceleration calculation based on the data recorded from the sensor and radius, which can serve as a basis for further research.
Design of an electro-pneumatic driving simulator
Authors: Woś Piotr , Dindorf Ryszard 
Published: July 2022

Abstract
The paper discusses the construction of a car driving simulator prototype. The basic design assumptions for the mechanical structure of the simulator platform as well as the drives and control system are presented. A solid model of the device was presented and a solution to its kinematics was proposed to determine the stroke of the driving cylinders as a function of the angular displacement of its members. The issues related to virtual prototyping to determine the trajectory of movement and dynamic quantities characterizing the simulator were presented. The construction of the control system with the use of a dedicated computer control card is discussed. Such a solution enables testing the functions of the simulator control system before its connection with the real simulator. At the same time, the design process has been significantly improved and accelerated.