bluuebunny/crossref_metadata_2025 huggingface dataset:
First offshore windfarm in the Mediterranean Sea - Italy
Authors: Severini L.
Published: February 2023

Abstract. The global demand for renewable energy is expanding in the attempt to mitigate the impacts of climate change. Offshore wind energy is, alongside with other “green” forms of energy, at the core of seeking carbon-neutrality of various countries. Based on the International Energy Agency, offshore wind energy could become the main source of power generation in Europe by 2042 [1]. Consequently, interest in offshore wind power is on the rise. By 2020, already 25 GW had been installed in Europe, and according to the latest projections by Wind Europe, 450 GW could be deployed by 2050 [2]. The article will present in detail the project of the offshore wind farm built a few months ago near the Taranto harbor. The project was conceived and carried out entirely by the iLStudio and Nicetechnology srl. In particular, not only the design phases but also the bureaucratic and planning process of the plant will be described, highlighting how long it took to get to its complete realization (14 years). At present we have become pioneers in the development of this technology.
An accurate and refined nonlinear beam model accounting for the Poisson effect
Authors: Ruocco E.
Published: February 2023

Abstract. In this paper, an enhanced beam model based on a 5-parameter displacement field, recently proposed by the authors and able to reproduce the Poisson effect in transverse direction is presented, and utilized to simulate the fully geometrically nonlinear response of elastic beam structures. The adoption of the linear solution as approximation functions for the nonlinear case allows prediction of nonlinear response of problems involving complex geometries with a relatively small computational effort. Several numerical examples of benchmark problems are analyzed, highlighting the characteristic features of the proposed five-parameter model and comparing the results with those obtained using the classical Bernoulli beam model and 3D finite element model.
Experimental identification of a pneumatic valve-cylinder system for attitude control
Authors: Antonelli M.G.
Published: February 2023

Abstract. Vertical vibrations on agricultural tractors, due to soil irregularities, represent a major cause of diseases of agricultural operators. The control of noise and vibration on the operator is of interest to the (Italian) National Institute for Insurance against Accidents at Work (INAIL). A prototype of an active suspension system of the operator seat has been developed in the laboratories of INAIL. The prototype can be configured with hydraulic or pneumatic actuation. This paper focuses on the pneumatic solution powered by a proportional pressure control electro-valve. Since several proportional pressure control valves are commercially available, three of them have been experimentally tested to determine the most suitable one for control purposes. Numerical modeling of the three valves has been carried out and described. Experimental tests on the selected valves allow for identifying the main dynamic parameters of the numerical models, providing a reliable simulator to be adopted for the development and optimization of the control system. The performances of the valves are compared and discussed.
Characterization of finger joints with underactuated modular structure
Authors: Achilli G.M.
Published: February 2023

Abstract. The characterization of flexible joints of robotic underactuated fingers allows the investigation of the finger flexion trajectories using a tendon-driven actuation. In this paper, the characterization of TPU 3D printed joints used in underactuated robotic fingers, is experimentally and numerically performed. Since the mechanical properties of 3D printed materials are uncertain, this research helps to define the characteristics of robotic fingers in terms of stiffness. The role of the stiffness for the control of fingers’ trajectories is fundamental and the obtained results are very useful for improving the method to track a certain predefined trajectory. Experimental and theoretical results evaluate the stiffness as a function of the infill density percentage of the material.
On the effects of strain wave gear kinematic errors on the behaviour of an electro-mechanical flight control actuator for eVTOL aircrafts
Authors: Guida R.
Published: February 2023

Abstract. In recent years, the increasingly growing overcrowding of urban environments and the resulting road traffic congestion have pushed toward the search for alternative mobility solutions, among which there are novel Urban Air Mobility (UAM) technologies. The UAM, together with the development of electric actuation systems, would allow decongesting the streets by exploiting the sky using electric Vertical Take-Off and Landing (eVTOL) aircrafts. Urban air mobility vehicles are primarily based on fully electrical flight control systems with rotary output. Since such technology is relatively new and unproven, Prognostic and Health Management (PHM) algorithms, able to continuously monitor the health status of such systems, are of particular interest. The diffusion of these systems strongly depends on the general confidence of possible customers. The present paper proposes a preliminary study on the effects of the kinematic error of a Strain Wave Gear (SWG), the most used reducer for this kind of applications, on the behaviour of an Electro-Mechanical Actuator (EMA) used as a flight control actuator for an eVTOL aircraft. The simulation results show how the unavoidable kinematic error affects the EMA performances and how its presence can be detected and quantified in strain wave gears.
Development of a multi-field computational tool for high-fidelity static aeroelastic simulations
Authors: Grifò M.
Published: February 2023

Abstract. A new method for high-fidelity aeroelastic static analysis of composite laminated wings is proposed. The structural analysis and the fluid-dynamic analysis are coupled in a heterogeneous staggered process. The Finite Element Method (FEM), the Carrera Unified Formulation (CUF) and Equivalent Plate Modelling (EPM) are combined to model complex three-dimensional geometries in a bi-dimensional framework; Computational Fluid Dynamics (CFD) is employed to solve the Navier-Stokes equations and different turbulence models (i.e. Spalart-Allmaras) through SU2, an open-source software that implements C++ routines for 3D fluid-dynamics analysis. The Moving Least Square patch technique is adopted to manage the fluid-structure interaction. The use of an equivalent plate model, as opposite to 1D models often employed in the literature, shows competitive performances in terms of number of degrees of freedom. High-fidelity aerodynamics allows studying non-linear phenomena associated to irregularities of the fluid-structure interaction, showing a level of accuracy that low-fidelity methods such as Vortex Lattice Method (VLM) and Doublet Lattice Method (DLM) are unable to provide. Such advantages are balanced by the need to elaborate a staggered iterative method for the resolution of static aeroelastic problems, which leads to higher computational costs.
Numerical modeling of dynamic crack propagation mechanisms using a moving mesh technique based on the ALE formulation
Authors: Pascuzzo A.
Published: February 2023

Abstract. This work proposes a new FE model to predict dynamic crack propagation mechanisms in quasi-brittle materials. The numerical strategy uses a Moving Mesh (MM) technique consistent with the Arbitrary Lagrangian-Eulerian (ALE) formulation to reproduce the variation of the geometry of the computational domain caused by dynamically growing cracks. Specifically, the motion of the mesh nodes takes place consistently with conditions dictated by classic Fracture Mechanics, which provide conditions concerning the direction of propagation and the velocity of advancing cracks. As a remarkable key novelty, the proposed method introduces the ALE formulation of the M-integral for extracting Dynamic Stress Intensity Factors (DSIFs) at a moving crack front. This formulation allows extracting fracture variables on deforming elements without losing accuracy. Comparisons with analytical and numerical data are proposed to assess the validity and efficiency of the proposed strategy.
A 3-year follow-up study on bone structure elastic quality
Authors: Cosmi F.
Published: February 2023

Abstract. Osteoporosis is called a silent disease because bone fragility manifests itself to the patient only in an advanced state, through fracture and pain. Medical and industry leaders recognize that the current golden standard diagnostic method, densitometry, or Dual Energy X-ray Absorptiometry (DEXA), may not always be sufficient to assess the patient’s real risk of fragility fracture [1]. Indeed, pathological alterations affect not only the mineral content (quantity) of the bone, but also its “quality”, which can be measured from the elastic properties of the bone internal trabecular structure by means of the Bone Elastic Structure Test, BES TEST®. In this study, the incidence of fragility fractures was assessed after a 3-year follow-up period in the women enrolled for a population study in 2015. The BES TEST® resulted an effective estimator of bone health, and can improve the assessment of the patient’s fracture risk map.
Some recent advances and applications in Distinct Element modelling of masonry structures
Authors: Schiavoni M.
Published: February 2023

Abstract. In this paper, advanced numerical models are used to study the progressive damage of a historic building, namely the Palazzo of Podestà and the Civic Tower of Accumoli (central Italy). The dynamic behaviour of the structure is analyzed following important seismic events such as those that occurred in 2016-2017. Discontinuous and continuous approaches are used. In the formers, the masonry response is represented both with Discrete Element Method (DEM) and the Non-Smooth Contact Dynamic (NSCD) method; in the latter the masonry nonlinearity is replicated using the Concrete Damage Plasticity (CDP) model. The numerical results showed a good correspondence of all the approaches with the real damage suffered by the structure after the seismic sequence.
Impacts analysis in the rocking of masonry circular arches
Authors: Bisegna P.
Published: February 2023

Abstract. The in-plane rocking of a masonry arch is studied. The starting motion of the arch is assumed to take place along the four-link failure mechanism u corresponding to a constant distribution of horizontal loads proportional to the arch self-weight. During such a motion, if overturning does not occur, the arch returns to the undeformed configuration, with all the hinges of the mechanism u simultaneously closing. At such an instant, impacts occur, implying a motion exchange and a subsequent movement of the arch along a new four-link mechanism u’. A novel impact model, different from the one available in literature, is here proposed. The restitution coefficient is computed by applying the linear and angular momentum impulse theorems. The rocking mechanism u’ of the arch after the impact is determined under the condition of minimum energy expense at the impact.
A 3D visco-elasto-plasto damage constitutive model of concrete under long-term effects
Authors: Dongmo B.F.
Published: February 2023

Abstract. A comprehensive 3D visco-elasto-plasto-damage constitutive model of concrete is proposed to analyze its behaviour under long-term and cyclic loadings. This model combines the visco-elasticy and plasticity theories together with damage mechanics. The work aims at providing an efficient model capable of predicting the material behaviour, taking into account time-dependent effects at the mesoscale. The visco-elastic part is modeled within the framework of the linear visco-elasticity theory. The creep function is evaluated with the aid of the B3 model by Bažant and Baweja, and implemented via the exponential algorithm. The modified Menétrey-Willam pressure-dependent yield surface, and a non-associated flow rule are used for the plastic formulation of the model. The damage part of the model considers two exponential damage parameters: one in tension, and one in compression, that account for a realistic description of the transition from tensile to compressive failure. After discussing the numerical implementation, the proposed model is calibrated, and numerical results at the mesoscale level are compared to experimental results.
Direct dynamics of 2D cable-driven parallel robots including cables mass effect and its influence in the control performance
Authors: Rubio Gómez G.
Published: February 2023

Abstract. Cable-driven parallel robots are a type of parallel manipulators where rigid links are replaced by actuated cables. Although in many cases dynamic models that neglect the cables mass and elasticity are employed to simulate the robot behavior and test the control approach to be used, there are several situations in which their effect cannot be disregarded, especially when large span cables are used, and the cable mass density generates important cable sagging. This work proposes a dynamic model for planar cable-driven parallel robots with 3 degrees-of-freedom considering cables mass and elasticity. Furthermore, the effect of using control approaches based on massless inelastic cables dynamic models on robots with non-negligible cable mass and elasticity is finally assessed.
Identification of normal modes of a set of strongly nonlinear springs
Authors: Latini F.
Published: February 2023

Abstract. The dynamics of connecting elements should be identified to evaluate their effects on the assemblies where they are employed. In general, a linear analysis is sufficient to determine their dynamics. However, in some cases, their responses depend on the amplitude and frequency of the excitation, thus nonlinear analyses must be carried out. Following a modal approach, Nonlinear Normal Modes (NNMs) can be used. The aim of this work is to identify the NNMs of a set of nonlinear connecting elements properly designed to be considered as strongly nonlinear springs. These elements have been manufactured and tested to measure some of their NNMs. The time series of the oscillation on some points is recorded using a laser vibrometer for different amplitude and frequencies of excitation. Then, the Virtual Point Transformation (VPT) is used to reduce the obtained data on the two physical points through which the spring is connected to other subsystems. The procedure is repeated for each NNM and the modal basis of each element is expressed as function of the level of excitation.
Anisotropic behaviours and strain concentration in lattice material evaluated by means of discrete homogenization
Authors: Gazzo S
Published: February 2023

Abstract. Lattice fibre materials are challenging the standard modelling approaches due to their specific nature that results in peculiar effective behaviours such as extremely anisotropic materials or generalized continuum media. In this context, the aim of this paper is to the determine qualitatively and quantitatively the role of the morphological and mechanical parameters by investigating simple archetypical microstructures. The study is conducted through an up-scaling approach making use of the Homogenization method of discrete periodic media in the framework of a variational approach. The results of the homogenization have been validated comparing the response of the continuum with the response of discrete models.
A distributed analysis of vibration signals for leakage detection in Water Distribution Networks
Authors: Restuccia G.
Published: February 2023

Abstract. It is well known that Water Distribution Networks (WDNs) are very inefficient and, in Italy, 40% of water is lost during distribution. In this paper, we present a solution for detecting leakages in WDNs, based on three main components: i) an innovative sensing element to be deployed at the sensor nodes, which analyses vibrations in the acoustic range for classifying external noise sources, induced by water leakages, by means of suitable machine learning techniques; ii) an Internet of Things (IoT) system of sensors, deployed at the junctions of the WDNs, for comparing the measurements collected at different critical points of the network; iii) a machine learning algorithm for processing the data. After the definition of the WDN structure, we introduce some numerical simulation tools suitable for studying our system and modeling the proposed sensing solution. Given the geometry, physical properties (pipe lengths, diameters, roughness, reservoir shapes and levels, pump and valve characteristic curves) and nodal demands, the simulation tool is able to compute leakages in pipes or nodes over time. In parallel, we simulate our IoT system coupled to the WDN, by logging partial information about the WDN status, which corresponds to the demand readings at the edge nodes or at some junction nodes, together with the (optional) measurements of the deployed sensing elements. On the basis of this data, we analyze the possibility of identifying the leakages in the network, even without knowing the exact or complete topology of the WDN. Our solution exploits different machine learning techniques devised to indirectly retrieve topological information, by correlating the balance of the flows as the water demand varies over time.
Digital simulation of multi-variate stochastic processes
Authors: Russotto S.
Published: February 2023

Abstract. Stochastic dynamic analysis of linear or nonlinear multi-degree-of-freedom systems excited by multi-variated processes is usually conducted by using digital Monte Carlo (MC) simulation. Since in structural systems few modal shapes contribute to the response in the nodal space, the computational burden of MC simulation is mainly related to the digital simulation of the input process. Usually, the generation of multi-variated samples of Gaussian input process is performed with the aid of the Shinozuka formula. However, since in this procedure the stochastic process is given as a summation of waves with random amplitude amplified by the square root of the power spectral density, the randomness is due to a random phase angle of each wave, therefore a very large number of waves is required to reach the Gaussianity, i.e. the process is only asymptotically stable. Moreover, the computational burden increases in case of multi-variated processes. The paper aims to drastically reduce the generation time of the input process through the use of a two-step procedure. In the first step, by using the Priestley formula, each wave is normally distributed. This first aspect allows to drastically reduce the computational effort for the mono-variate process since few waves are sufficient to reach the Gaussianity. In the second step, the multi-variate process is reduced as a summation of independent fully coherent vectors if the quadrature spectrum (q-spectrum) can be neglected. An application of digital simulation of the wind velocity field is discussed to prove the efficiency of the proposed approach.
Kurdish Kurmanji Lemmatization and Spell-checker with Spell-correction
Authors: Mustafa Hanar Hoshyar , Nabi Rebwar M.
Published: February 2023

There are many studies about using lemmatization and spell-checker with spell-correction regarding English, Arabic, and Persian languages but only few studies found regarding low-resource languages such as Kurdish language and more specifically for Kurmanji dialect, which increased the need of creating such systems. Lemmatization is the process of determining a base or dictionary form (lemma) for a specific surface pattern, whereas spell-checkers and spell-correctors determine whether a word is correctly spelled also correct a range of spelling errors, respectively. This research aims to present a lemmatization and a word-level error correction system for Kurdish Kurmanji Dialect, which are the first tools for this dialect based on our knowledge. The proposed approach for lemmatization is built on morphological rules, and a hybrid approach that relies on the n-gram language model and the Jaccard Coefficient Similarity algorithm was applied to the spell-checker and spell-correction. The process results for lemmatization, as detailed in this article, rates of 97.7% and 99.3% accuracy for noun and verb lemmatization, correspondingly. Furthermore, for spell-checker and spell-correction, accordingly, accuracy rates of 100% and 90.77% are attained.
Exploring the Potential of Technology to Promote Exercise Snacking for Older Adults Who Are Prefrail in the Home Setting: User-Centered Design Study
Authors: Stawarz Katarzyna , Liang Ian Ju , Alexander Lyndsay , Carlin Angela , Wijekoon Anjana , Western Max J
Published: February 2023

Background

Older adults are at increased risk of falls, injury, and hospitalization. Maintaining or increasing participation in physical activity during older age can prevent some of the age-related declines in physical functioning that contribute to loss of independence and low reported quality of life. Exercise snacking may overcome some commonly cited barriers to exercise and encourage older adults to engage in muscle strength and balance activity, but the best way to deliver and support this novel format remains unknown.

Objective

Our aim was to explore how the novel exercise snacking approach, that is, incorporating short bouts of strength and balance activities into everyday routines, could be supported by technology within a home setting and what types of technologies would be acceptable for older adults who are prefrail.

Methods

Following a user-centered design process, 2 design workshops (study 1) were conducted first to understand older adults’ (n=11; aged 69-89 years) attitudes toward technology aimed at supporting exercise snacking at home and to inform the design of 2 prototypes. Next, based on the findings of study 1, an exploratory pilot study (study 2) was conducted over 1 day with 2 prototypes (n=5; aged 69-80 years) at the participants’ homes. Participants were interviewed over the telephone afterward about their experience. Transcripts were analyzed using framework analysis.

Results

The results showed that the participants were positive toward using technology at home to support exercise snacking, but both exercises and technology would need to be simple and match the participants’ everyday routines. Workshop discussions (study 1) led to the design of 2 prototypes using a pressure mat to support resistance and balance exercises. The exploratory pilot study (study 2) participants reported the potential in using smart devices to support exercise snacking, but the design of the initial prototypes influenced the participants’ attitudes toward them. It also hampered the acceptability of these initial versions and highlighted the challenges in fitting exercise snacking into everyday life.

Conclusions

Older adults were positive about using technology in their homes to support strength and balance exercise snacking. However, although promising, the initial prototypes require further refinement and optimization before feasibility, acceptability, and efficacy testing. Technologies to support exercise snacking need to be adaptable and personalized to individuals, to ensure that users are snacking on balance and strengthening exercises that are appropriate for them.
Особливості клінічного перебігу й діагностики герпесасоційованої багатоформної ексудативної еритеми
Authors: Asharenkova O.V.
Published: February 2023

Обізнаність у питаннях клінічного перебігу, симптоматики герпесасоційованої багатоформної ексудативної еритеми і схожих за проявами інших захворювань слизової оболонки ротової порожнини, червоної облямівки губ і шкіри дозволить лікареві-стоматологу провести правильну диференціальну діагностику, своєчасно встановити відповідний діагноз, уникнути помилки під час вибору тактики лікування й усуне ризик розвитку подальших ускладнень.
Менеджмент ризиків стоматологічних захворювань і взаємодії лікарських засобів у пацієнтів, які приймають антидепресанти
Authors: Khaitovych M.V.
Published: February 2023

Проведено пошук у базах даних Scopus, Web of Science, MedLine, The Cochrane Library. Під час війни такі стресові події, як бомбардування, позбавлення дому, облога й участь у боях, призводять до розвитку посттравматичного стресового розладу, депресії. Особливо часто прояви тривожних розладів виявляють у внутрішньо переміщених осіб. Люди з психічними розладами мають значно гірші показники здоров’я ротової порожнини, ніж населення в цілому. У них частіше відмічається періодонтит, карієс, що може бути пов’язано з багатьма факторами, зокрема з прийомом антидепресантів, які в наш час є першою лінією лікування депресії та тривожних розладів, у тому числі посттравматичного стресового розладу. Трициклічні антидепресанти спричиняють сухість у роті, викликаючи гіпофункцію слинних залоз, особливо в людей похилого віку. Це сприяє розвитку карієсу зубів, погіршує утримання протезів. Селективні інгібітори зворотного захоплення серотоніну порушують кістковий метаболізм, призводячи до остеопорозу, сприяють розвитку кандидозу, порушень гемостазу, бруксизму, підвищують ризик неприживлення дентальних імплантів. Серед небезпечних фармакодинамічних взаємодій — транзиторне потенціювання симпатоміметичної активності при застосуванні вазоконстрикторів у пацієнтів, які приймають трициклічні антидепресанти або мапротилін. Макролідні антибіотики пригнічують діяльність ферментів системи цитохрому Р-450, що порушує метаболізм антидепресантів, підвищує їх концентрацію в плазмі крові й збільшує ризик розвитку побічних ефектів. Селективні інгібітори зворотного захоплення серотоніну порушують метаболізм амідних анестетиків, що може спричиняти збільшення їх побічних ефектів. Отже, лікар-стоматолог, уточнюючи медикаментозний анамнез пацієнта, повинен звернути особливу увагу на прийом антидепресантів, надати рекомендації щодо профілактики й корекції їх впливу на стан ротової порожнини, запобігти взаємодії лікарських засобів.
Study on the Realization of the “Ten No” in Shanxi-Gansu-Ningxia Border Area during the Anti-Japanese War
Authors: Yue Cheng
Published: February 2023

In reviewing the century-long history of the China, the Shanxi-Gansu-Ningxia border area during the Anti-Japanese War was in a difficult war period in terms of time and in a very backward northwestern interior in terms of space, but the government built the Shanxi-Gansu-Ningxia border area into a society of “ten no” and became a democratic anti-Japanese base area. Its valuable experience is an important inspiration for socialist modernization under the rapid development and changes in the world.
Augmented Reality in Healthcare: A Systematic Review
Authors: Shet Omkar G , Ponduri Vamsi Krishna , Gupta Prem , H Rohan , S Roopa M
Published: February 2023

Abstract: The healthcare industry is experiencing a lot of innovation. Out of the various new challenges, the speed of technology innovation, the demand for more patient-centred experiences, growing medical expenditures, and extending outreach to remote locations stand out. Augmented reality (AR) is revolutionising the healthcare sector with the rising usage of linked devices, computer vision, and artificial intelligence. The delivery of healthcare services is changing, and the overall standard of patient care is rising as a result of novel interactions between the real world and virtual objects enabled by mobile phones, wearables, and head-mounted displays.
Analysis Of Agriculture Data Using Machine Learning
Authors: Harikrishna N. , Ramanjaneyulu Ch. , Karthikeya A. , Somasekhar B. , Mahesh Ch.
Published: February 2023

Abstract: Without a question, agriculture provides the majority of livelihood opportunities in India and significantly boosts the national economy. Practices and managerial choices are two examples of technological elements influencing crop productivity. Hence, forecasting crop production in advance of harvest would aid farmers in making the right decisions. By creating a userfriendly prediction system, we try to find a solution. The outcome of the forecast is suggested to the farmer so that appropriate adjustments can be made to enhance the yield. Crop yield can be predicted using a variety of methods or algorithms. A viable remedy for the issue farmers is facing can be found by assessing all the factors involved, including location, soil nutrients, pH value, rainfall, and moisture. In order to provide insight prior to the actual crop production, this research employs machine learning algorithms to analyse agricultural data and discover the optimal yield.
Raita Mitra for Crop and Pesticide Recommendation along with Disease Prediction using ML
Authors: O Apoorva G , M Spoorthi
Published: February 2023

Abstract: Agriculture seems to be a key part of both a country's food security and its economic growth. Choosing which crops to grow is one of the most important parts of planning agriculture. The suggested system helps farmers choose crops that will do well in their area. For agriculture to grow, it's important to be able to make accurate predictions about which crops to grow. We've given you a machine-learning method called "Random Forests" that can predict how crop choices will change based on the current climate and biophysical changes. We have gathered a lot of information about crop selection from many different places. These numbers are used both to train and test the model. From different results, it's clear that RF is a good machinelearning algorithm for predicting crops in their current state and has a very high level of accuracy when analysing data. RF algorithm also helps to find the right fertiliser by taking into account NPK values, soil moisture, and the name of the crop. Since a long time ago, plant leaf disease has been one of the biggest threats to food security because it lowers crop yield and lowers the quality of the crop. Accurately diagnosing diseases has been a big problem, but recent advances in computer vision made possible by deep learning have made it possible to use a camera to help diagnose diseases in plat leaf. It talks about the new way to find diseases and use deep learning and convolutional neural networks. neutral networks (CNNs) has done a great job of putting plant leaf diseases into groups. Using an image dataset of plant diseases that was available to the public, a CNN was used to apply and train a number of neuron-wise and layer-wise visualisation methods. So, it was found that neutral networks can pick up on the colours and textures of lesions that are unique to each disease. This can be compared to how humans make decisions.
Dual Functional Roof Ventilator
Authors: Wishwakarma Shreya N , Burkule Prof. Bhushan , Upasani Prof. Shrihari
Published: February 2023

Abstract: The world is facing a huge energy crisis due to resources depletion. The renewable energies play a vital role in energy generation sector. Fossil fuels such as coal and oil cause enormous environmental pollution. Wind energy is a major renewable source of energy and can replace this fossil energy. This paper aims to study the energy generation methods using roof ventilators. A wind driven, having metallic construction and blades on its periphery is a roof top ventilator. It is installed on the roof of industries as well as machine shops, warehouse and it provide effective ventilation. Hot air becomes lighter and goes upward on the top of industries and is expelled out through ventilator. At the same time fresh air also suck inside due to free spinning of roof ventilator. This free spinning can be converted into electrical energy using different electrical components. This technique is low in cost and feasible because of the minimum quantity of transferring elements and electric systems.
Da Uranografia da época de Kardec à Astronomia moderna – 2a. parte
Authors: Terini Ricardo
Published: February 2023

Em suas obras espíritas, Allan Kardec apresentou os conceitos aceitos pelas ciências de sua época e também os resultados de suas pesquisas no campo da ciência e da filosofia espíritas. Com o passar do tempo, novas descobertas levaram à atualização dos conceitos científicos, em diversos campos. O objetivo deste artigo, assim como da sua 1a parte [JEE 9, 010205 (2021)], foi fazer uma síntese das principais descobertas e teorias astronômicas desde o século XIX até a atualidade, partindo das próprias informações históricas e científicas sobre o assunto inseridas por Kardec nas obras fundamentais do Espiritismo. Na 1a parte deste trabalho, foram abordadas as questões do espaço universal, da formação e movimento da Terra, dos mundos, das estrelas e da Via Láctea, além da pluralidade dos mundos habitados. Nesta 2a parte, outros tópicos astronômicos que também sofreram atualizações são analisados, em particular, a formação e propriedades da Lua e dos demais satélites do Sistema Solar, os cometas e asteroides, a fonte da energia solar, entre outras descobertas e concepções astronômicas dos séculos XX e XXI. Como no artigo anterior, tais dados são comparados às informações e instruções dadas pelos Espíritos consultados por Kardec e inseridas em suas obras, evidenciando que seu saber também tem limites. Na divulgação da Doutrina Espírita, então, é importante, quanto possível, incluir as atualizações das noções científicas expostas nas obras fundamentais.
Detection of Biofilm Formation in Classical and Hypervirulent Klebsiella pneumoniae
Authors: Alansary Iman Mohammad Mahmood , Al-Saryi Nadal Abdulamer
Published: February 2023

Klebsiella pneumoniae has considered as a relevant healthcare-associated pathogen, its risk of infections is increasing in the presence of medical devices. K. pneumoniae is known for its ability to form biofilm on biotic and abiotic surfaces. Biofilm of K. pneumoniae assists in bacterial protection from host immune responses and antibiotics. Hypervirulent Klebsiella pneumoniae (hvKp) emerges as a new pathotype, which first appeared in Asian Pacific Rim but spread globally. Thus, this study aimed to investigate the ability of K. pneumoniae including hvKp and potential hvKp isolates to form biofilm. One hundred isolates of K. pneumoniae were collected from different hospitals in Baghdad city. These isolates were identified by phenotypic characterization on selective agar plates, biochemical tests, VITEK II, and molecular identification. Biofilm formation was tested in these isolates by two methods, congo red and Tissue Culture Plate method. In congo red method, 33% of the isolates were biofilm producer and (63%) can form biofilm by TCP method divided as: 14% strong, 15 moderate, 34% weak, and 37% non-biofilm producer. The hvKp and potential hvKp isolates showed a variable ability to form biofilm as classical K. pneumoniae.
The Relation Between the Noise Stress Effects and Neurotransmitters, Sex Hormones Levels in the Male and Female Balb/c Mice
Authors: Al-Shammary Zainab A. A. , Hameid Sabah A. , Jouda Jamela
Published: February 2023

Many studies suggest that noise stress could damage many body systems such as nervous and endocrine systems, so the goal of this study was to demonstrate how the levels of neurotransmitters and sex hormones in mature male and female mice are affected by different noise stress exposure durations? In this study, 60 Balb/C mice (males and females) were used. Fifty mice were exposed to 90dB noise stress for 4h/daily and were scarified in different time points; 1,7,14,21, and 28 days while the rest 10mice were not exposed to noise stress and they serve as control. After the end of the experiment, the blood was collected and the serum samples were used to determine neurotransmitters levels, serotonin (5-HT) and noradrenaline (NA), and hormones levels included testosterone, estrogen and cortisol levels. The findings showed that neurotransmitters levels were significantly higher in mice exposed to noise stress for 1,8,14, and 21days which was non-significant decrease compared to the control in the 28-day stress group. While the levels of cortisone were continuously rising in the exposed noise stress mice groups with the length of duration, the levels of estrogen in female and testosterone in male were continuously decreasing. Interestingly, the levels of neurotransmitters and cortisol were significantly higher in females than males in all noise stress groups. Additionally, these effects completely differ after 28 days of noise exposure, which needs more future studies to prove the risk of exposure to this type of stress on the body systems.
Tingkat Kedisiplinan Atlet Cabang Olahraga Akurasi pada Masa Adaptasi Kebiasaan Baru
Authors: Suranta Tarigan Brema Ekel , Panca Adi I Putu , Agus Wijaya I Made
Published: February 2023

Virus covid-19 yang melanda Indonesia, kedua cabor akurasi ini yaitu panahan dan petanque diberlakukan  dikarantina atau berlatih dari rumah masing-masing oleh pemerintah. Penelitian ini bertujuan untuk menganalisis tingkat kedisiplinan atlet cabang olahraga panahan dan petanque pada masa adaptasi kebiasaan baru. Jenis penelitian ini adalah penelitian deskriptif. Metode yang digunakan adalah metode survei. Subjek yang digunakan dalam penelitian ini yaitu atlet panahan sebanyak 45 orang dan atlet petanque sebanyak 18 orang. Instrumen yang digunakan adalah instrument kedisiplinan. Analisis data menggunakan teknik analisis statistik deskriptif yang dituangkan dalam bentuk persentase pada tabel dan grafik. Hasil penelitian menunjukkan bahwa tingkat kedisiplinan atlet cabang olahraga panahan berada pada kategori “cukup disiplin” sebesar 4,5% (2 orang), kategori “disiplin” sebesar 24,4% (11 orang) dan kategori “sangat disiplin” sebesar 71,1% (32 orang). Untuk hasil penelitian tingkat kedisiplinan atlet cabang olahraga petanque berada pada kategori “disiplin” sebesar 38,9% (7 orang) dan kategori “sangat disiplin” sebesar 61,1% (11 orang). Berdasarkan nilai rata-rata tingkat kedisiplinan atlet cabang olahraga panahan dan petanque berada pada kategori “sangat disiplin”. Kategori ini tidak dapat digeneralisasikan, akan tetapi hanya berlaku untuk kelompok yang diteliti saja.
Profil Cabang Olahraga Pencak Silat Kabupaten Badung 2019
Authors: Rahman Alfani Aulia , Sudiana I Ketut , Tisna Gede Doddy
Published: February 2023

Pencak silat merupakan salah satu bentuk olaharaga tradisional yang dipertanding dalam berbagai ajang kejuaraan didaerah sampai pada tingkat internasional. Hanya saja tidak semua daerah mampu melaksanakan pembinaan serta pelatihan pencak silat dengan baik. Adapun tujuan dari penelitian ini yakni untuk mengetahui profil pelatih serta mengetahui proses dan program latihan yang diterapkan pada lembaga pelatihan pencak silat. Penelitian ini tergolong kedalam jenis penelitian deskriptif kualitatif. Subjek yang terlibat dalam penelitian ini yakni pengurus/manajer dan pelatih pencak silat. Pengumpulan data dalam penelitian dilakukan dengan meggunakan metode observasi, wawancara, dan dokumentasi. Adapun instrument yang digunakan yakni berupa pedomana wawancara, dan lembar observasi dan dokumentasi. Data yang diperoleh dalam penelitian kemudian dianalisis secara deskriptif kualitatif dengan menyesuaikan antara hasil penelitian dengan kajian penelitian sebelumya. Hasil analisis penelitian menunjukkan bahwa tim pencak silat memiliki fasilitas Latihan berupa fasilitas sarana yang terdiri dari 12 Jenis alat yang semuanya dalam kondisi baik layak pakai sesuai standar IPSI, badung Memiliki Pelatih sebanyak 8 orang denga rata-rata berpendidikan Sarjana (S1), semua telah mengikuti pelatihan sebagai pelatih dan kedelapan pelatih ini merupakan atlit berprestasi di tingkat daerah, nasional dan International. Ikatan Pencak Silat Indonesia (IPSI) memiliki program latihan yang terprogram baik dan tersusun rapi berupa program Latihan Tahunan (Macro cycle), Semester, Triwulan, Bulanan (Massa cycle), Mingguan (Micro cycle), Harian (Myo cycle), Tapering, Try In dan Try Out. Sehingga berdasarkan hasil tersebut, maka dapat disimpulkan bahwa prestasi yang diperoleh oleh suatu organisasi pencak Silat  didukung oleh Sarana prasarana yang memadai baik dari segi jumlah maupun kondisi alatnya, memiliki pelatih yang cukup dan dengan prestasi yang membanggakan.
Persepsi Mahasiswa terhadap Perkuliahan Daring pada Masa Pandemi Covid-19
Authors: Meyyana Andriyani  , Murti Rahayu Condro , Mustadi Ali , Sukma Hanum Hanifa , Gunarti Nur Septia Isma
Published: February 2023

Virus corona atau Covid -19 merupakan suatu virus yang baru yang muncul pada tahun 2019. Datangnya covid -19 menjadi tantangan bagi suatu lembaga pendidikan yang dimana suatu pembelajaran dilakukan secara konvensional ketika datang covid-19 ini menjadi suatu adaptasi yang baru bagi pendidik, peserta didik, begitupun orang tua peserta didik. Hadirnya covid-19 ini menyebabkan pembelajaran dilakukan secara daring. Pembelajaran daring inilah yang menjadi alternatif untuk memecahkan permasalahan yang muncul pada masa pandemi covid-19. Penelitian ini bertujuan untuk menganalisis persepsi mahasiswa terhadap perkuliahan daring sebagai sarana pembelajaran selama covid-19. Penelitian ini menggunakan pendekatan studi kasus deskriptif. Subyek penelitian ini adalah mahasiswa pendidikan guru sekolah dasar semester 2, dengan jumlah sampel 47 Mahasiswa. Pengumpulan data dalam penelitian ini dilakukan dengan kuesioner dengan cara mengirim google form yang harus diisi oleh mahasiswa pendidikan guru sekolah dasar. Hasil penelitian menunjukkan bahwa bahwa mahasiswa terbiasa menggunakan teknologi pembelajaran; kemudahan akses dimana saja dan kapan saja ketika proses pembelajaran asalkan jaringan bagus; aplikasi yang digunakan dalam pembelajaran daring; hambatan mahasiswa ketika pelaksanaan pembelajaran daring; dampak negatif pembelajaran daring; dan harapan mahasiswa terhadap pembelajaran daring.
The Effectiveness of Environmental Education Learning Strategy Teaching Materials (SPPLH) in Improving Teachers' Cognitive Flexibility
Authors: Irah Kasirah  , Nadiroh  , Hafid Abbas
Published: February 2023

This study aims to determine the effectiveness of Environmental Education Learning Strategy (SPPLH) teaching materials in increasing the cognitive flexibility of teachers. The method used in this research is the research and development method. This study uses a quantitative approach. The place of research was carried out at SLBN 7 Jakarta. The time of study was carried out from March 2020 to October 2020. The sampling technique was carried out by Random Sampling. Product study this packed in form SPPLH teaching materials as unique references in science _ with notice characteristics of SLBN 7 Jakarta teachers. The results showed that based on the results of the t-test, Cognitive Flexibility t-test 4.42 > t table 2,042. There is a very significant difference between cognitive flexibility scores who were given SPPLH teaching materials, where the score of post-pre-test t treatment was 19.68 higher than teachers who were not given SPPLH teaching materials, namely the post-pre test score control of 9.12. Based on the results of the analysis, the SPPLH. The teaching materials model effectively boosts the teacher's cognitive flexibility in an innovative learning integrated environment.
TYPES AND GENRES OF AUDIO PODCASTS FROM MASS MEDIA
Authors:   Lviv Polytechnic National University, Mudra Iryna , Majchrowska Justyna ,   Instytut Polonistyki i Dziennikarstwa Kolegium Nauk Humanistycznych Uniwersytet Rzeszowski
Published: February 2023

The media market is developing rapidly. Mass media on the Internet are convergent, creating and publishing photo, audio and video content along with text. Therefore, it is not surprising when, for example, newspapers/magazines create video materials, and TV channels create audio productions. The development of the worldwide Internet network has led to the fact that the mass media are constantly searching for promising platforms for the distribution of their media products and attracting new audiences. Podcasts have become increasingly popular in recent years. And it is surprising. After all, there is a trend that people want to devote less time to long texts and video materials, but at the same time they want to receive more different information, so short journalistic media products are gaining popularity. The audience on the Internet reduces their time to watch videos and read texts. But along with that, the attention and popularity of audio podcasts on media resources and on audio and video platforms is growing every year. Audio podcasts are a convenient format of audio materials for receiving relevant and interesting information while walking, doing household chores, being in transport, in the gym, etc. They are of various types and genres, on various topics and are free for the audience. Audio podcasts are recorded not only by journalists, but also by bloggers and other members of the Internet. In the study, the features of audio podcasts were considered, their history was shown, genres and types were characterized. Audio podcasts from high-quality mass media ("Suspilne", "Hromadske", "Liga", "Ukrainian Pravda", "Ukrinform", "Radio Svoboda", "NV" and "Babel") on podcast platforms were analyzed in detail. It was found that online media are increasingly producing audio materials for podcast platforms. Audio podcasts are recorded on various topics and in a variety of genres, but interviews dominate.
SOLIPSISM AS A FACTOR IN CONTENT PERSONALIZATION: PRACTICE OF INTERNET JOURNALISM
Authors:   V’yacheslav Chornovil Galician College, Finkler Juryj
Published: February 2023

There is little research on how online journalists work to convince the public, on how online media technologies work. This article presents the research results of theoretical research on the possibility of convincing users in the sociopolitical and socioeconomic aspects of understanding content. Therefore, many users are well aware of the creation and consumption of information within the functional boundaries of the Internet, analyzing the goal of identifying gaps in the individual meaning of the audience about the content. The objective of this article is to highlight the phenomenon of solipsism in online journalism as a standard postmodernist attempt of journalists to embed their own social experience in the individual space of man. As a results of processing the material, we came to the following conclusions. 1. The hypothesis of solipsism in online journalism assumes a certain level of civic competence. 2. The formation of strong organizational and content links between Internet media and its regular audience is generally identified by the interests, programs and forms of such actions that have value. 3. The production of online media of its own content prefers a clearly defined sociopolitical line, which leads to the suppression of idiosyncrasy, diversity and dissent. 4. The context of solipsism establishes the freedom of the audience up to its right to neglect the activities of the media in general. 5. The author can react painfully and effectively in any available way to the activities of any Internet publication. 6. The audience can act as a separate author-each content, which evaluates the practice of any online publication, using, in particular, places of mass communication.