bluuebunny/crossref_metadata_2025 huggingface dataset:
Are religions growing or declining? Self-reported religion and personality
Authors: Senay Ibrahim
Published: February 2022

It is not clear whether religions are on the rise or fall today. The present study investigated whether personality trait factors can predict the combined growth of religious affiliations and non-affiliations (i.e., the number of people who self-identify with a religion or do not identify with any religion) across socio-cultural contexts through an analysis of online survey data collected from 111 countries and 4,270 individuals. In a multiple-discriminant analysis, religion self-reports constituted three independent dimensions. Religious affiliations and non-affiliations (whether a person identifies as a member of a specific religion or identifies him/ herself as an atheist or agnostic) formed separate clusters along one axis, while on the other two, they did not. Across countries, religions? growth rates significantly predicted the trait factor configuration classifying religious affiliations (seeing oneself as a member of a specific religion) differently from non-affiliations (seeing oneself as an atheist or an agnostic). The personality profile grouping affiliations together with non-affiliations had a non-significant relationship with religions? growth rates. In sum, although self-identifying with no religion (i.e., agnosticism and atheism) might not replace affiliating with a religion in the short run, it can show a non-significant trend toward competing with adhering to most popular religions. The results may have implications for understanding the impact of religious pluralism on religions? growth rates and the different growth trends associated with the complexity of religious affiliations.
Understanding planning students’ self-perceived employability in an uncertain future
Authors: Grant-Smith Deanna , Carroli Linda , Winter Abbe , Mayere Severine
Published: February 2022

Planning students are entering an increasingly competitive professional
labour market. To understand their selfperceived employability and identify
the employability-enhancing strategies they engage in to improve their
graduate employment prospects, this paper analyses survey data collected
from 106 undergraduate students at a large Australian university. Three key
themes are identified as important for graduate employability from the
perspective of planning students: education; personal attributes and assets;
and appropriate professional experience. This study finds that many
respondents were critical of the extent to which they believed their
university studies were positively positioned for the real world of planning
and positively positioned them to succeed in the graduate employment market
relative to other planning graduates. To address these limitations,
respondents emphasised the importance of developing personal and
professional networks with peers and engaging in skills-enhancing
activities, and revealed an expectation that they may need to engage in
unpaid professional work experience. However, notwithstanding these efforts
to actively moderate the impact of self-perceived personal skills and
experiential deficits on their employability, there was a nascent
acknowledgement that despite investing significant effort into developing
networks, getting professional experience, and modelling appropriate
attitudes and professional traits, they may become highly employable yet
still fail to secure graduate employment as a planner due to structural
constraints beyond their control.
Sexual violence against students at faculties: An overview of the so far research results
Authors: Copic Sanja , Lukovic-Radakovic Milica
Published: February 2022

Research on sexual victimization of university students particularly
intensified during the 1980s. They suggest that students, especially female
students, are one of the categories that are at special risk of being
victimized by various forms of sexual violence during their studies.
Research on sexual violence at universities in Serbia is rare, so this
phenomenon is still under- researched. This paper aims to provide an
overview of the results of previous research on the prevalence and structure
of sexual violence against university students, groups of students at
particular risk of victimization with sexual violence at the universities
and the consequences of sexual violence against students at the universities
in the world and in Serbia. Previous research suggested large differences in
the prevalence of this form of victimization, which is a direct consequence
of the application of different methodological approaches. University
students are more often exposed to sexual harassment, verbal or nonverbal,
as well as to harassment through physical contact or through social media,
and less often to more severe forms of violence, such as rape or attempted
rape. The groups that are at particular risk from sexual victimization at
the universities include women, persons of different sexual orientation than
heterosexual, those at the beginning of the study, as well as students who
consume alcohol and/or drugs and whose material status is poor or constantly
oscillates. Sexual violence leaves numerous consequences for victims,
especially psychological ones, but it also negatively affects the
continuation of schooling and academic achievement, so it is necessary to
develop policies and mechanisms for timely recognition of victimization and
providing support to victims.
Characteristics of the situations where police officers are victimisated
Authors: Petrovic Jovan
Published: February 2022

?An attack on the police is an attack on the state? is a sentence we can
often hear when an event occurs in which police officers are injured or
killed. Victimologists often overlook police officers as victims, who are
not given much relevance, and such phenomena are rarely investigated. This
study aims to examine the characteristics of the situations in which crimes
against police officers occur. Police data of crimes against police officers
registered in the period 2017-2020 in the city of Zrenjanin, Serbia, were
categorically summarized and statistically processed, and the
characteristics of the situations in which the criminal offences occur were
analyzed. The results suggest that the victims are male police officers,
predominantly in uniform; mostl attacks take place in urban areas, at night,
while the perpetrators are younger than 34, often under the influence of
alcohol. The limitation of this research refers to the fact that it was
conducted on the territory of only one police department, and only certain
variables were taken into account that defines the characteristics of the
situations in which police officers are victimised.
Characterization of phenotypes of skeletal Class III malocclusion in Korean adult patients treated with orthognathic surgery using cluster analysis
Authors: Yang Il-Hyung , Choi Jin-Young , Baek Seung-Hak
Published: February 2022

Objectives

To characterize the phenotypes of skeletal Class III malocclusion in adult patients who underwent orthognathic surgery (OGS).

Materials and Methods

The sample consisted of 326 patients with Class III malocclusion treated with OGS (170 men and 156 women; mean age, 22.2 years). Using lateral cephalograms taken at initial visits, 13 angular variables and one ratio cephalometric variable were measured. Using three representative variables obtained from principal components analysis (SNA, SNB, and Björk sum), K-means cluster analysis was performed to classify the phenotypes. Statistical analysis was conducted to characterize the differences in the cephalometric variables among the clusters.

Results

Class III phenotypes were classified into nine clusters from the following four major groups: (1) retrusive maxilla group, clusters 7 and 9 (7.1% and 5.5%; severely retrusive maxilla, normal mandible, severe and moderate hyperdivergent, respectively) and cluster 6 (9.2%; retrusive maxilla, normal mandible, normodivergent); (2) relatively protrusive mandible group, cluster 2 (20.9%; normal maxilla, normal mandible, hyperdivergent); (3) protrusive mandible group, clusters 3 and 1 (11.7% and 15.3%; normal maxilla, protrusive mandible, normodivergent and hyperdivergent, respectively) and clusters 8 and 4 (15.3% and 3.7%; normal maxilla, severe protrusive mandible, normodivergent and hypodivergent, respectively); and (4) protrusive maxilla and protrusive mandible group, cluster 5 (11.4%; protrusive maxilla, severely protrusive mandible, normodivergent). Considerations for presurgical orthodontic treatment and OGS planning were proposed based on the Class III phenotypes.

Conclusions

Because the anteroposterior position of the maxilla and rotation of the mandible by a patient's vertical pattern determine Class III phenotypes, these variables should be considered in diagnosis and treatment planning for patients who have skeletal Class III malocclusion.
Stevens-Johnson Syndrome and Severe Anaemia: A Case of Toxicity Induced by Vemurafenib plus Cobimetinib following Pembrolizumab for Metastatic Melanoma
Authors: Batinac Tanja , Hlača Nika , Simetić Luka , Valković Frane , Peternel Sandra , Prpić-Massari Larisa
Published: February 2022

Abstract is missing (Short communication)
Long-term Safety of Secukinumab Over Five Years in Patients with Moderate-to-severe Plaque Psoriasis, Psoriatic Arthritis and Ankylosing Spondylitis: Update on Integrated Pooled Clinical Trial and Post-marketing Surveillance Data
Authors: Gottlieb Alice B. , Deodhar Atul , Mcinnes Iain B. , Baraliakos Xenofon , Reich Kristian , Schreiber Stefan , Bao Weibin , Marfo Kwaku , Richards Hanno B. , Pricop Luminita , Shete Abhijit , Trivedi Vivek , Keefe Deborah , Papavassilis Charis C. , Jagiello Piotr , Papanastasiou Philemon , Mease Philip J. , Lebwohl Mark
Published: February 2022

Secukinumab, a selective interleukin (IL)-17A inhibitor, is approved for use in adult and paediatric psoriasis, psoriatic arthritis, ankylosing spondylitis and non-radiographic axial spondyloarthritis. The aim of this study was to report the long-term safety of secukinumab in pooled data from 28 clinical trials and a post-marketing safety surveillance in psoriasis, psoriatic arthritis and ankylosing spondylitis patients. Analyses included 12,637 secukinumab-treated patients, corresponding to 15,063, 5,985 and 3,527 patient-years of exposure in psoriasis, psoriatic arthritis and ankylosing spondylitis patients, respectively. Incidences of serious adverse events were low, with no identifiable patterns across indications. Active tuberculosis or latent tuberculosis infections were rare. The incidence of opportunistic infections was < 0.2/100 patient-years, the incidence of malignancy was ≤ 1/100 patient-years, and the incidence of major adverse cardiovascular events was < 0.7/100 patient-years, with no apparent increases over time. Secukinumab demonstrated a favourable safety profile for up to 5 years of treatment across the 3 indications, and no new safety signals were identified.
Cutaneous Ulcers, Delusional Disorders and Munchausen by Proxy: From Somatic to Psychological Diagnosis and Approach
Authors: Nico Marcello Menta Simonsen , Dwan Alexandre Jack
Published: February 2022

Abstract is missing (Short communication)
Representación gráfica de la muerte en estudiantes de la ESO
Authors: Rojas Pedregosa PEDRO , ALÓS FRANCISCO
Published: February 2022

Apenas existen estudios sobre la representación gráfica de la muerte por parte de estudiantes de la ESO. Por ello, esta investigación tiene como objetivo ser pionera en abordar dicho tema y comprobar la existencia de diferencias significativas entre imágenes, géneros y explicación narrativa. Con este fin, se evalúa una muestra de 152 adolescentes de 2 institutos de la ESO de la provincia de Granada (España). Para ello, se realiza una evaluación combinada, cualitativa y cuantitativa. Los resultados muestran que existen diferencias estadísticas significativas entre géneros y los tipos de dibujo realizados. Igualmente, la mayoría del alumnado relaciona la palabra muerte con ataúdes, cruces y lápidas. Finalmente, se discute la necesidad de abordar la muerte, como un tema transversal en todos los contenidos de la ESO para su mayor conocimiento, reflexión y un mejor saber vivir.
Novel Test Techniques for the Detection and Identification of Damage in SiCf/SiC Ceramic Matrix Composites
Authors:   , Newton Christopher
Published: February 2022

The complex structural architecture and inherent processing artefacts within ceramic matrix composites combine to induce inhomogeneous deformation and damage prior to ultimate failure under mechanical loading. Bulk measurements of strain via extensometry or even localised strain gauging will fail to characterise such inhomogeneity when performing conventional mechanical testing on laboratory scaled coupons. By applying novel mechanical test techniques such as digital image correlation (DIC), resistance monitoring, acoustic emission (AE) and X-ray computed tomography (XCT) to the room temperature axial assessment of a SiCf/SiC composite under static and ratchetted loading, localised and bulk damage progression can be quantified. Ceramic matrix composites (CMCs) offer a combination of low density and thermal stability for structural engineering applications where long-term exposure to high temperature environments is applicable. Advanced processing techniques have been optimized to produce CMC materials based on oxide/oxide and SiCf/SiC systems, for example, which can be tailored to the manufacture of engineering components destined to operate at 800°C and above. However, the uptake of these composite materials has been slow, mainly due to the high inherent cost of both the raw materials and processing techniques together with their inherent brittle behaviour under applied tensile stress. Hence, previous focus on such systems has been largely restricted to high performance aerospace, power generation and high end automotive applications.
Evaluation of Optimal Wavelet De-noising Parameters to Predict Nutrient Content in Oil Palm Leaves using Spectroradiometer
Authors: Jayaselan Helena A. J. , Ismail Wan I. W. , Shariff Abdul R. M. , Nawi Nazmi M.
Published: February 2022

In order to reduce excessive fertiliser application, a non-destructive method of spectral data acquisition using spectroradiometer with wavelet analysis was explored to determine the level of nutrients in the oil palm leaves. In spectral data analysis, wavelet de-noising (WD) can be applied to remove background noises and other disturbances such as scattered light that may affect the results of data. Therefore, this study aims to determine and evaluate the best combination of parameters for WD, with respect to nutrients nitrogen (N), phosphorus (P) and potassium (K). These nutrients were studied for three age groups of immature, mature, and old palms. The results were evaluated based on the highest value of coefficient of determination (R2) and lowest root mean square error (RMSE) of partial least square regression (PLSR) analysis. The prediction of nutrient content correlation was found to have tremendous improvement using the proposed technique when compared to the original spectra, with highest prediction R2 value of 0.99 for K of mature palms, 0.97 for N of immature palms and 0.95 for P of mature palms. The results of WD for nutrients prediction were found to be better than results from chemometric method of namely multiplicative scatter correction (MSC). It was observed that for each nutrient type and palm maturity level, there were different combination of parameters based on the highest R2 value that best suited them. Therefore, spectroradiometer assisted with optimal wavelet de-noising parameters gives excellent relationship between spectral data and nutrients N, P, and K.
Estimation of a Planetary Gear Mesh Stiffness: An Approach Based on Minimising Error Function
Authors: Olanipekun K. A.
Published: February 2022

The mesh stiffness of gear teeth is one of the major sources of excitation in gear systems. Many analytical and finite element methods have been proposed in order to determine the mesh stiffness of gears especially parallel axis spur gears. Most of these methods are not trivial because they involve complicated analyses which incorporate parameters like gear tooth error, gear spalling sizes and shapes, nonlinear contact stiffness and sliding friction before mesh stiffness can be determined. In this work, a method is proposed to determine the sun-planet and ring-planet mesh stiffnesses of a planetary gear system. This approach involves fitting a relationship between the measured natural frequencies from an experimental modal test and natural frequencies predicted using an analytical model of a planetary gear. This method is relatively easier compared to the existing methods which involve complicated analyses. For this study, the average mesh stiffness estimated is 12.5 MN/m.
Prediction of Optimum Weld Tensile Strength Using Response Surface Methodology
Authors: Etin-Osa C. E. , Ebhota L. M.
Published: February 2022

Metals are often subjected to various types of stresses, usually under tensile stress, quick failure of material can be encouraged especially when poor combinations of process parameters are employed in joining of the material. Tensile strength is regarded as the maximum stress that a material can sustain under tension. The aim of this study is to predict the weld tensile strength of tungsten inert gas (TIG) mild steel welds using Response Surface Methodology (RSM), with the purpose of achieving optimum results.

The input parameters considered were current, voltage, and gas flow rate. The TIG welding process was used to join two pieces of mild steel plates, after which tensile test was conducted on the specimen. The experimental result was analyzed using the RSM.

Weld Tensile test of 596.218MPa with a desirability value of 95.70% was observed to be the best, resulting from the optimized process parameters of current of 120.00 Amp, voltage of 20.00 volt and gas flow rate of 12.00 L/min.
Evaluation of the Influence of the Level of Corrosion of the Reinforcing Steel in the Moment-Curvature Diagrams of Rectangular Concrete Columns
Authors: Landa-Ruiz Laura , Croche René , Santiago-Hurtado Griselda , Moreno-Landeros Victor , Cuevas Josefina , Méndez Ce Tochtli , Jara-Díaz Manuel , Baltazar-Zamora Miguel Angel
Published: February 2022

In the present work, it is proposed to include in the theoretical curves of moment-curvature (m- ?) the effect of corrosion by obtaining the decrease in the area of longitudinal reinforcing steel. The corrosion depth will be obtained from the crack width and corrosion length observed in the cover concrete. With the depth of corrosion, the area of steel that is lost will be obtained and this modification will be incorporated into the theoretical procedure to elaborate the m- ? curves. The forces of the steel will be obtained from an elastoplastic model with curved hardening and the forces of the concrete with a model that considers the effect of confinement.
Allocation Problems, by the Method of Alternative Representation of the Inverse Set, for Values of Cooperative TU Games
Authors: Dragan Irinel
Published: February 2022

In earlier works, we introduced the Inverse Problem, relative to the Shapley Value, as follows: for a given n-dimensional vector L, find out the transferable utilities’ games , such that  The same problem has been discussed further for Semivalues. A connected problem has been considered more recently: find out TU-games for which the Shapley Value equals L, and this value is coalitional rational, that is belongs to the Core of the game . Then, the same problem was discussed for other two linear values: the Egalitarian Allocation and the Egalitarian Nonseparable Contribution, even though these are not Semivalues. To solve such problems, we tried to find a solution in the family of so called Almost Null Games of the Inverse Set, relative to the Shapley Value, by imposing to games in the family, the coalitional rationality conditions.

In the present paper, we use the same idea, but a new tool, an Alternative Representation of Semivalues. To get such a representation, the definition of the Binomial Semivalues due to A. Puente was extended to all Semivalues. Then, we looked for a coalitional rational solution in the Family of Almost Null games of the Inverse Set, relative to the Shapley Value.

In each case, such games depend on a unique parameter, so that the coalitional rationality will be expressed by a simple inequality, determined by a number, the coalitional rationality threshold. The relationships between the three numbers corresponding to the above three efficient values have been found. Some numerical examples of the method are given.
Modelling of Harmonic Response of Scarf Adhesive Joints
Authors: Alqahtani Awad A. , Almitani Khalid H. , Othman Ramzi
Published: February 2022

Adhesives are used for attaching structures to various spacers such as tubular and scarf joints to replace the traditional joining methods of welding, brazing, soldering, etc. Many of the unique features associated with adhesives are low manufacturing cost, long component life, and lightweight. Accordingly, a considerable amount of study has been carried out and is still underway to develop. The main objective of this study is to investigate the response of the scarf joints when exposed to a harmonic load. The finite element method (FEM) using ANSYS is availed to study and analysis the natural frequencies, mode shape, and frequency response. Additionally, the influence of the adhesion angle is examined.
Digitization in Archival Material Conservation Processes
Authors: Malaperdas George
Published: February 2022

The purpose of this paper is the digitization process and the techniques used, in cases of archival material preservation. Digitization as a process, whether it involves old documents and old maps, or audio and video clips, is the most appropriate process not only for the protection, but also for the reuse, upgrading and highlighting of cultural heritage elements. In this paper, the main problems are presented divided into the main categories of archival material (photographic material, printed material, audio, and video material) while at the same time the equipment and means used are presented.
Effect of Existing Building Walls on the Geotechnical Behavior of Foundation under Earthquake Loading
Authors: Elsiragy M. N. Massoud
Published: February 2022

— Structure’s systems are subjected to additional loads due to earthquakes that may be produces progressive failures. The building illustrates dissimilar categories of failure mechanism for the minor to major earthquake conditions. These structures categorized to the most susceptible type of building has experienced serious hazard or even full failure for the period of seismic activities, therefore their investigation is a complex thing to do. Consequently, this research aims at studying the behaviour of large-scale model of structures constructed with and without brick walls under seismic conditions. The effect of building walls on the performance of the structure during earthquake loading is investigated numerically using PLAXIS 3D software. An eight story building with basement designed on a mat foundation is simulated as three-dimensional model in case of brick walls existing and without brick walls case. The effect of existence such wall building on the stability of foundation soil system is discussed in the form of lateral, horizontal deformation, and foundation acceleration. The studied showed that the reduction of extreme horizontal displacement and bending moment for building foundation with brick walls reached to 43%, and 68% respectively compared to the building without walls. The consideration of wall as filling for super structure significantly reduce the foundation acceleration by as much as 72% of its initial value, which lead to considerable effect of increasing the foundation stability.
Study of Unbiased Plotting Position Formulae for the Generalized Extreme Value (GEV) Distribution
Authors: Ologhadien Itolima
Published: February 2022

The determination of appropriate quantile relations between the magnitude of extreme events and the corresponding exceedance probabilities is a prerequisite for optimum design of hydraulic structures. Various plotting position formulae have been proposed for estimating the exceedance probabilities or recurrence in. In this study, eight plotting position formulae recommended for GEV distribution were used for estimating the exceedance probabilities of annual maximum series of River Niger at Baro, Kouroussa and Shintaku hydrological stations. The performance measures of PPCC, RRMSE, PBIAS, MAE and NSE were calculated by applying their individual equations to each pair of observed AMS, arranged in ascending order, and exceedance probabilities calculated using each plotting positions. The result of the study show that Weibull was the best plotting position formula, seconded by Beard and thirdly, In – na and Ngugen. This study underscores the necessity to accurately size water infrastructure. In a recent paper, the author found GEV distribution the best – fit probability distribution model in Nigeria. Thus, the need to develop indepth understanding and accurate estimation of exceedance probabilities and return periods using the GEV distribution. Furthermore, this paper recommends similar studies to be conducted for Pearson Type 3(PR3) and Log Pearson Type 3 (LP3) distributions.
Effective Project Management and the Role of Quality Assurance throughout the Project Life Cycle
Authors: Fakhravar Hengameh , Ouabira Monier Madison
Published: February 2022

Quality is a fundamental requirement in effective project management. Effective project management entails a steady focus on quality management as well as achievement of all user requirements as defined during the requirements engineering phase of project implementation. Quality assurance must be executed throughout the project development cycle as a new normal in reducing errors and challenges during project development. Conducting quality assurance throughout the project development cycle has many benefits to both the project as well as the project development team. Understanding the research approach to use is critical in achieving high-quality findings in projects. There is a need to understand how to utilize deductive, inductive, and abductive research reasoning when conducting project implementation.
Utilization of Renewable Energy: A Study on the Utilization of Solar Energy for Power Plants at the Campus of Universitas Samudra, Indonesia
Authors: Umar Hamdani , Amudy Munira , Rizal T. Azuar
Published: February 2022

The availability of solar energy is higher than global energy consumption, affordable by many users, simple to use, and relatively more environmentally friendly. Complexes of higher education institutions in Indonesia, in general, consist of many buildings with large roofs and stretches of unused land, which are suitable for solar power installations. This study analyzes the feasibility of constructing a solar power plant at an educational institution facility, with a specific case study on the Universitas Samudra campus. The analysis results have shown that for the supply of electricity with a total power of 10 MW, PV panels are superior to parabolic collectors. The cost of producing electricity using PV panels is 6.60 ¢/kWh, while the parabolic collector costs 26.42 ¢/kWh. And the total area required for the installation of PV.
A Review on the Latest Developments of Conducting Polymer and Composite Coatings for Enhancing Biocompatibility and Corrosion Resistance of Metallic Biomedical Implants
Authors: Mohammed Mohammed Razzaq , Radhi Safaa Hashim , Hadi Ahmed Namah
Published: February 2022

The utilisation of metals and alloys in the biomedical field was and is still of immense importance for human life. Typically, the materials used for metallic biomedical applications, particularly those are implanted in vivo, provide appropriate mechanical and biological properties that allow them to accomplish the purpose for which they are used. Nonetheless, there are some inherent limitations impede the optimal use of these materials. One of the most crucial determinants is corrosion, which results in several other problems such as the formation of toxic substances that can not only cause necrosis of the cells attached to the implant, these toxins could also be carried by blood into body tissues and organs. This in turn leads to dire consequences on patient's life. Although a wide variety of approaches may be available to address the corrosion issue, it is alleged that coating these metals and alloys with polymers, especially the conductive ones, is among the best strategies in this regard.

This review will highlight the latest developments in using conductive polymers including polypyrrole, polyaniline, polythiophene and their composites in order to enhance biocompatibility, mechanical properties and most importantly corrosion protection performance of metallic implants. The findings obtained from coating 316L stainless steel, titanium and magnesium alloys, which have been widely manipulated in biomedical field as long and short-term implants, will be evaluated.
Modeling of the Direct Shear Test from the Finish Elements Method
Authors: Adolphe Kempena , Gampio Mbilou Urbain , Greve Mouanda Makanda Emilienne , Lacaba Rafael Guardado , Gonçalves Antonio Olimpio , Florent Boudzoumou
Published: February 2022

Soil improvement using the geosynthetic technique is usually used for fine and friable soils. This technique provides a reinforced soil with high shear strength. The interest is certainly well displayed. Indeed, this work aims to numerically assess the geosynthetics placement influence on the fine sand properties. For this purpose, a reduced model has been designed to initially allow simulating the geosynthetic layer incorporation into an unsaturated soil while maintaining vertical stress and measuring the lateral stress generated during this incorporation. The scale model makes it possible to assess the possible displacements experienced by the soil during the direct shear test. Numerical modeling then made it possible to confirm the experimental results and verify these displacements behavior. Numerical modeling was carried out by applying the finite element method considering a behavioral law of the Mohr-Coulomb type for soil and geosynthetics. The results obtained by numerical modeling confirmed the direct shear test functionality in the laboratory. This opens the door to further studies about the geosynthetics effect in the soil.
Evaluation of Qualitative Accelerated Tests Practices in Product Development Process: A Computer Simulation
Authors: Da Rocha Laura Lima , De Oliveira Marcelo Albuquerque , Veroneze Gabriela de Mattos
Published: February 2022

— Reliability is an essential item for the product development phase, as it is from estimated values are obtained about how the product will behave and, consequently, about modes of design flaws and weaknesses. In short, these responses are important to offer to the market high quality products, in addition to providing safety to the customer. In this work, a product was proposed where its design was based on research on how its shape should be and three different raw materials were chosen to be applied to the product and, with the simulation, it was possible to discover the weaknesses and points of improvement and which material best suited the proposed product.
IoT based Controlling of Power Grid
Authors: Rakib Md Abdullah Al , Rahman Md. Moklesur , Rahman Md. Ashiqur , Chakraborty Shantanu , Shawon M. M. Abu Shahria , Abbas Fysol Ibna
Published: February 2022

An electric network, electric grid, or electricity network is an integrated electricity supply network for producers to consumers. It consists of electricity producing stations. The main objective of this study is to monitor the electricity grid system process, disclose this system at a dangerous level, monitor the current line, and reduce conventional systems expenses. From anywhere on the Internet, we can monitor. We can do it also if a system is enabled or disabled. It uses an electrical microcontroller to monitor a single-phase electrical device using Arduino to read sensor voltage and current and then communicate measured data via a new Android application for wireless monitoring. It enables the monitoring of several basic power quality parameters of basic voltage. The technology also determines the line frequency and power factor.
GSM Based Home Safety and Security System
Authors: Rakib Md. Abdullah Al , Rahman Md. Moklesur , Rana Md. Sohel , Islam Md. Sanjib , Abbas Fysol Ibna
Published: February 2022

In this paper, we worked on how to control home apparatuses, safety, and security systems utilizing GSM innovation by utilizing a cell phone. We will likewise show that we can control the apparatuses even without a phone by sending an ordinary call. The favorable position of utilizing GSM innovation is that we can handle home appliances from any place in the world. This system permits the proprietor to control the appliances and to get a feedback status of the home apparatuses by sending calls just as through a portable application. For the home security system, we are utilizing an antitheft announcing system that will report the proprietor by sending a message and ringing a call. Likewise, for the security system, when fire or gas spillage is expected to occur, it will also report the proprietor by sending a call. Subsequently, by utilizing GSM innovation, it gives remote access to the gadgets to be controlled.
Application of Eigenvalues and Eigenvectors in Correlating Density and Fire Properties of Some Selected Woods in South-East Nigeria
Authors: Okafor Vincent Nwalieji , Enweonye Igwebuike , Umennadi Patrick Ugochukwu
Published: February 2022

Data sourced from literature for wood density (WD) and fire properties for fifteen Nigerian woods were analysed. The fire properties are ignition time (IT), flame propagation rate (FPR), flame duration (FD), afterglow time (AGT), ash formation (AF) and limiting oxygen index (LOI). The aim was to correlate density and fire properties of wood using eigenvalues and eigenvectors. The analysis tool adopted was the statisticalanalysis system (SAS) where principal component and regression analyses were performed. Based on the presented data and analyses, WD was found to relate well with FPR, AGT and LOI with an adjusted R-Square = 83% while the other three parameters: IT, FD and AF constitute random noise.

2.11.0.0

2.11.0.0
Production of Clay-based Ceramic Filter for Water Purification
Authors: Grema A. S. , Idriss I. M. , Alkali A. N. , Ahmed M. M. , Iyodo M. H.
Published: February 2022

The spread of Diseases like Cholera and Diarrhea, which leads to loss of lives in developing countries is commonly caused by use of contaminated water. In this study ceramic pot filters for rural area water purification were developed. The clay sample was tested for physical properties and the mixtures of the clay and sawdust were made in seven (7) proportions of 75/25, 70/30, 65/35, 60/40, 55/45, 50/50, 45/55. The soil tests conducted on the different portions of the clay and sawdust material revealed that the shrinkage of the sawdust blended clay reduced to the minimum of 6.3 compared to the pure clay with 13.7. A fluid dynamic test experiment on each filter was conducted; similarly total dissolved solids (TDS), pH and turbidity tests for both raw water and filtered water were conducted. From fluid dynamic test results, filter 50/50 % tends to have higher filtration rate compared to the other two filters. From the TDS, pH, and turbidity test, the results obtained show that the filtered water quality has fallen within the world health organization (WHO) standard. It can therefore be concluded that the filtered water is safe for consumption.
Power Quality and Performance Assessment of Grid-connected Photovoltaic Distributed Generation with Compliance to Stipulated Grid Integration Requirements
Authors: Nkado Fredrick , Nkado Franklin
Published: February 2022

Recently, the demand for electrical energy has increased more than energy production due to the growing population and industrialization. Therefore, the distributed generators integration (DGs) into the distribution system has been widely adopted. This work examines the effect of photovoltaic-based distributed generator (PV-DG) integration on power quality effect of a radial distribution system. Firstly, the capacity and optimum placement of the PV-DG units in the distribution network are determined by employing the particle swarm optimization (PSO) algorithm. Then, the impact of PV-DG integration on voltage harmonic distortion is analyzed by performing harmonic load flow analysis. Also, the P-V curve method is used to evaluate the effects of higher PV-DG penetration levels on loading margin and voltage magnitude. The simulation results show that as the PV-DG units’ penetration level increases, a greater level of harmonic distortion is injected, implying that the PV-DG units should only be integrated up to the network’s maximum capacity. Therefore, high harmonic distortion is produced when the PV-DG units are penetrated beyond this maximum penetration level, which has a negative impact on the system’s performance. The total voltage harmonic distortion is 4.17 % and 4.24 % at PCC1 and PCC2 at the highest penetration level, allowing the acceptable harmonic distortion limit. Also, grid-connected PV-DG units improve loading margin and voltage magnitude, according to the P-V curve results. The standard IEEE-33 bus distribution system is modelled in ETAP software and is used as a test system for this study.
Quality Assessment of Commercially Produced Sandcrete Blocks in Okitipupa Local Government Area, Ondo State, Nigeria
Authors: Adese A. J. , Olajide O. D.
Published: February 2022

The frequent collapse of buildings in Nigeria has necessitated carrying out a quality check not only on the structural design of these buildings but also on the materials used in their construction. Sandcrete blocks are used as a walling unit mostly because they are cheap and fast to produce. They can also be use as either load-bearing or non-load bearing purpose. Hence, this paper gives an in-depth quality assessment of sandcrete blocks commercially produced in Okitipupa Local Government Area of Ondo State, Nigeria. Six sandcrete block producing locations were visited within the local government and both six inches (6?) blocks (450×150×225 mm) and nine inches (9?) blocks (450×225×225 mm) from each location were randomly collected, together with their soil samples. Twenty-four control samples of 6? and 9? sandcrete blocks were also produced in accordance with the Nigerian Industrial Standard (NIS 87: 2007). Specific gravity test, silt/clay content and sieve analysis test were performed on each soil samples from different locations to check their suitability for block production, in addition, bulk density, compressive strength and water absorption were performed on the collected sandcrete blocks. In general, the compressive strength of the block samples was between 1.09 N/mm2 to 1.19 N/mm2 for six inches and 1.37 N/mm2 to 1.64 N/mm2 for nine inches which falls below the 2.5 N/mm2 and 3.45 N/mm2 minimum recommendation given by the NIS.
A Computational Fluid Dynamics-based Correlation to Predict Droplet Sauter Mean Diameter for ?? Yliq Atomization Model in Pressure Swirl Atomizer
Authors: Amedorme Sherry K. , Apodi Joseph
Published: February 2022

Liquid atomization is crucial to ensure efficient combustion as it is an inherent part of the injector system. The combustion of fuels relies on effective atomization to increase the surface area of the fuel and consequently achieve high rates of mixing and evaporation. Pressure swirl atomizers are inexpensive and reliable type of atomizer for fuel injection owing to its superior atomization characteristics and relatively simple geometry. The Sauter mean diameter (SMD) of atomizer contributes significantly to the combustion chamber performance. This paper presents a two-step strategy to predict droplet SMD for atomisation model in pressure swirl atomizer through the combination of experimentally validated Computation Fluid Dynamics (CFD) and Optimal Latin Hypercubes (OLHC) Design of Experiments (DoE) techniques. A three-dimensional Eulerian two-phase CFD model is developed to account for liquid and gas phases as a single continuum with high-density variation at large Reynolds and Weber numbers and validated against experimental measurements, before being employed to carry out a parametric study involving operating conditions and fluid properties of the pressure swirl atomizer. The atomizer is then represented in terms of four design variables, namely liquid viscosity, liquid velocity, surface tension and atomizer exit diameter. An 87-point OLHC DoE is constructed within the design variables space using a permutation genetic algorithm resulting in an accurate SMD prediction. Results show the newly developed SMD prediction is found to be superior compared with existing correlations and indicate significant improvement in the droplets SMD.
IoT Based Non–Technical Loss Detection and Mitigation System for Power Distribution Networks
Authors: Eronu Emmanuel M. , Oboh Matthew O. , Ezeh Emeka S. , Tiamiyu Gafar , Shaibu Farouq E.
Published: February 2022

Electrical Energy crisis is a major problem faced in the world today and it’s increasingly significant in this part of Africa. A perfect solution seems not to be feasible as several solutions have been proposed in the past by various authors with little impact on the power sector. In this work, we present a method of Non-Technical Loss (NTL) detection consisting of a microcontroller interfaced with a current sensor that measures the current on the power line. A sensor node is placed at the supply end of the pole while two or more others sensor nodes are connected to the output of the pole depending on the number of consumers. The measured value of current is sent via the microcontroller to a web cloud that is accessible by the consumers and the utility company from any part of the world by simply logging on to the website; www.electricity-theft.herokuapp.com. The design uses the principle of Kirchhoff Current Law (KCL) to achieve this aim. The consumers can therefore monitor their power consumption from any location in the world and prevent theft on the network. The results obtained from the installation of the sensor nodes were analyzed using correlation and regression analysis. A correlation analysis of the data results gave us a correlation coefficient of 0.9802, while a regression analysis provided us with a linear relationship between the dependent and independent variable expressed mathematically thus Y = 0.916x + 0.254. A regression graph is also plotted. Furthermore, a T-Test and F-Test was conducted to statistically test the sensor nodes. A NodeMCU Wi-Fi microcontroller and a self-powered Phidget current sensor is used for the sensor node design. Communication between the sensor nodes is via Wi-Fi while a 4G router was used to provide internet services.
Flexural Analysis of Thick Isotropic Rectangular Plates Using Orthogonal Polynomial Displacement Functions
Authors: Dinwoke Onodagu P. , Henry Aginam C. , Franklin Uzodinma C.
Published: February 2022

This paper analysed the flexural behaviour of SSSS thick isotropic rectangular plates under transverse load using the Ritz method. It is assumed that the line that is normal to the mid-surface of the plate before bending does not remain the same after bending and consequently a shear deformation function f (z) is introduced. A polynomial shear deformation function f (z) was derived for this research. The total potential energy which was established by combining the strain energy and external work was subjected to direct variation to determine the governing equations for the in – plane and out-plane displacement coefficients. Numerical results for the present study were obtained for the thick isotropic SSSS rectangular plates and comparison of the results of this research and previous work done in literature showed good convergence. However, It was also observed that the result obtained in this present study are significantly upper bound as compared with the results of other researchers who employed the higher order shear deformation theory (HSDT), first order shear deformation theory (FSDT) and classical plate theory (CPT) theories for the in – plane and out of plane displacements at span – depth ratio of 4. Also, at a span - depth ratio of  and above, there was approximately no difference in the values obtained for the out of plane displacements and in-plane displacements between the CPT and the theory used in this study.
Numerical Study of the Influence of Flow Control to the Kinetic Detachment in the Near-Wake of an Ahmed Body
Authors: Tientcheu-Nsiewe M. , Tcheukam-Toko D. , Edoun M. , Tchawe-Tchawe M. , Wafo R. , Djiako T.
Published: February 2022

Environmental pollution represents today the greatest danger to which the world has to do faces. Several activities of human are accused. Among the more devastative, the transport sector and in particular that of the car remains more to be feared. For control and to reduce the impact of the pollution of this sector on the environment, it is necessary to control the profile of the flow around the vehicle. The structure of the flow around a motor vehicle is strongly separated and swirling. It presents recirculation’s zones of upstream and downstream from this one. For thus modeling these various swirling structures, we carried out a study on three configurations of vehicle. The purpose of this numerical study is to arise the turbulent character of the flow in the near wake of the Ahmed body. The ?-? turbulent model has been applied. This simulation is based on the Navier-Stokes equations. The results which we obtain make it possible to see that the size of the zone of wake is a function of the extent of separation, of the slack angle, of the rear window and upstream speed. Comparison of numerical results with the experimental plot available in the literature is satisfactory.
An Overview of Thermal Behavior of Polymers: Lead Acid Battery Applications
Authors: Peram Shyamsundar Reddy , Byraboina Madhava Rao , Dama Narendran , Kurivella Suryanarayana Murthy , Mandava Jagadish
Published: February 2022

Thermal analysis is the analysis of a change in a property of a material, which is related to the temperature difference. Polymer samples are typically in solid form and undergo various thermal transitions upon heating, including melting, phase transition, sublimation, and decomposition. The purpose of this study is to demonstrate how thermal techniques such as DSC and TGA may be used to evaluate polymer thermal stability through the examination of polymer characteristics such as glass transition temperatures, melting points, and mass changes. Different polymers have been investigated and used in lead-acid batteries for various applications based on their mechanical and thermal characteristics. Few lead-acid battery-related polymers like Polypropylene (PP), Polyethylene (PE) Separator, Polyethylene Terephthalate (PET), Polyvinyl Chloride (PVC) and Acrylonitrile butadiene styrene (ABS) were studied and explained.
Franz Grillparzer. Neue Lektüren und Perspektiven
Authors: Hoffmann Birthe , Prutti Brigitte
Published: February 2022

Anlässlich des 150. Todesjahres von Franz Grillparzer (1791-1872) präsentiert dieser Sammelband eine Reihe neuer Forschungsbeiträge von internationalen Literaturwissenschaftler*innen zur Modernität und Aktualität seines Werks. Im Mittelpunkt stehen die hermeneutische Provokation und transkulturelle Dimension seinesŒuvres, zentrale Aspekte der Dramenästhetik und der Rezeption.