bluuebunny/crossref_metadata_2025 huggingface dataset:
Lutas e gênero na educação física escolar: Um olhar a partir da figuração estabelecidos-outsiders
Authors: Ortega Rolando
Published: October 2023

Lutas e gênero na educação física escolar: Um olhar a partir da figuração estabelecidos-outsiders
No lustre do castelo: Um levantamento outonal da avifauna no Parque Ecológico Rancho dos Bugres
Authors: Ortega Rolando
Published: October 2023

No lustre do castelo: Um levantamento outonal da avifauna no Parque Ecológico Rancho dos Bugres
Modelo de competencias docentes clave para enfrentar una nueva modalidad educativa
Authors: Ortega Rolando
Published: October 2023

Modelo de competencias docentes clave para enfrentar una nueva modalidad educativa
Radiografía del cannabis medicinal como fuente de desarrollo rural integral en Colombia
Authors: Ortega Rolando
Published: October 2023

Radiografía del cannabis medicinal como fuente de desarrollo rural integral en Colombia
Predictors of the duration of professional activity in patients with schizophrenia
Authors:   “Prof. Dr. Alexandru Obregia” Clinical Psychiatry Hospital, Bucharest, Romania, Donisan Emilia , Zaharia Stefan ,   “Prof. Dr. Alexandru Obregia” Clinical Psychiatry Hospital, Bucharest, Romania
Published: October 2023

Introduction. Schizophrenia is a complex mental disorder that significantly impacts individuals’ ability to engage in productive professional activities. Understanding the factors that contribute to the duration of professional activity in patients with schizophrenia can aid in developing effective interventions and support systems in order to improve quality of patients life, inform clinical practice, and reduce economic burden. Materials and methods. The study has a cross-sectional design, and had the main purpose of identifying the key predictors of employment duration among a sample of 202 individuals with schizophrenia. Participants were divided into four subcategories based on their work experience: never worked, worked 1 to 5 years, worked 5 to 10 years, and worked more than 10 years. This study employs multinominal logistic regression to compare employment (formulated as categorical variables) and ANOVA with post hoc Bonferroni correction (formulated as continue variables), to investigate predictors of employment duration in patients with schizophrenia. Statistical significance was considered at p≤.05. Several key predictors were identified, including socio-demographic factors like relationship status and clinical characteristics such as hospitalization frequency. Results. Our results indicate that being in a stable relationship could potentially serve as a positive predictor for longer employment duration. Gender differences were noted, with women generally having longer periods of employment, possibly influenced by a later onset of schizophrenia in this gender group. Contrary to expectations, medication type did not significantly impact employment duration. Moreover, the relationship between employment and hospitalization appeared complex and not directly proportional. Conclusion. The study highlights that unemployment in this population is a modifiable state and not an inherent trait. These findings have significant implications for tailoring interventions and providing personalized support to optimize professional activity outcomes for individuals with schizophrenia.
Application of EAWE interview in a young patient with first psychotic episode
Authors:   “Prof. Dr. Alexandru Obregia” Clinical Psychiatry Hospital, Bucharest, Romania, Teacoe Ioana , Pop Mariana ,   “Prof. Dr. Alexandru Obregia” Clinical Psychiatry Hospital, Bucharest, Romania, Horosan Lavinia ,   “Prof. Dr. Alexandru Obregia” Clinical Psychiatry Hospital, Bucharest, Romania
Published: October 2023

Psychopathology is an essential domain of psychiatry and is relevant for diagnosis, relational depth with the patient, and adherence to a treatment plan. The Examination of Anomalous World Experiences interview aims to help the clinician explore, along with his patients, their subjective world experiences. We describe the lived world of a young male with a first psychotic episode, eliciting their first-person perspective of time, space, relationships with others, and worldviews. The 20-year-old patient presented with persecutory, paranoid, and hypochondriac delusions, auditory pseudo hallucinations, visual hallucinations, changes in perceived overall atmosphere and vitality, flattening of affect, and social withdrawal. Experiences such as internal time seeming slower than world time, and a sense of remoteness from others, found to be common in patients with first psychotic episode, were also present in our patient’s case. Anomalous world experiences, together with anomalous self-experiences, might eventually be useful for diagnostic and prognostic by identifying specific profiles in some clusters of patients, and by helping to construct models of pathogenetic pathways to psychosis in general.
Are there any differences between sexes regarding the manifestations of agression in psychiatric patients?
Authors:   “Prof. Dr. Alexandru Obregia” Clinical Psychiatry Hospital, Bucharest, Romania, Ion Adriana , Horosan Lavinia ,   “Prof. Dr. Alexandru Obregia” Clinical Psychiatry Hospital, Bucharest, Romania, Nistor Diana-Elena ,   “Prof. Dr. Alexandru Obregia” Clinical Psychiatry Hospital, Bucharest, Romania
Published: October 2023

Introduction. Aggressive behavior within psychiatric units poses a complex challenge for both healthcare providers and patients. Understanding the multifaceted nature of aggression is crucial to enhancing therapeutic approaches and patient safety. This study aims to investigate the manifestations of aggression in psychiatric patients, with a specific focus on potential gender differences. Objective and methods. The study analyzed data from 177 psychiatric patients admitted to a Romanian emergency psychiatric hospital over a four-month period. Demographic factors such as age, gender, educational background, socio-economic status, and clinical history were collected anonymously. Aggressive behavior within the past week was assessed using the Modified Overt Aggression Scale (MOAS). Statistical analyses were conducted to explore potential gender differences in aggression levels. Results. The analysis of our cohort revealed a lack of statistically significant distinctions between males and females with respect to socio-economic variables, including stable housing, relationship status, background environment, and employment status. This finding implies the absence of overt gender-related disadvantages that could potentially contribute to the emergence of a tendency for aggressive behavior. Analysis of the MOAS scores revealed no statistically significant differences in the manifestation of aggression between men and women. Conclusion. While various risk factors consistently predict aggression among psychiatric patients, this study suggests that gender may not be a significant factor influencing the manifestation of aggression. These findings challenge common stereotypes regarding gender and aggression and emphasize the need for a more nuanced understanding of this complex behavior within psychiatric settings. Future research should further explore the dynamics of aggression, including the roles of ward and staff environments, to enhance strategies for prevention and intervention in psychiatric care.
The Role of Fiscal Policy in Human Development (Macroeconomic Approaches)
Authors: Abbas Ibrahim Hikmat , Sadeghi Seyedkamal
Published: October 2023

This study aims to analyze the relationship between financial policy and human development is one of the most prominent concerns of the modern era, as it is a way to know the impact and role of financial policy in the human development process, The main purpose of the research is to know The role of fiscal policy in human development the current study is looking for the future of human development in light of the developments that occurred in Iraq after 2003, Analysis of the reality of fiscal policy in Iraq.
The Benefits Of Continuous Glucose Monitoring In Pregnancy
Authors: Yoo Jee Hee , Kim Jae Hyeon
Published: October 2023

Previous studies have consistently demonstrated the positive effects of continuous glucose monitoring (CGM) on glycemic outcomes and complications of diabetes in people with type 1 diabetes. Guidelines now consider CGM to be an essential and cost-effective device for managing type 1 diabetes. As a result, insurance coverage for it is available. Evidence supporting CGM continues to grow and expand to broader populations, such as pregnant people with type 1 diabetes, people with type 2 diabetes treated only with basal insulin therapy, and even type 2 diabetes that does not require insulin treatment. However, despite the significant risk of hyperglycemia in pregnancy, which leads to complications in more than half of affected newborns, CGM indications and insurance coverage for those patients are unresolved. In this review article, we discuss the latest evidence for using CGM to offer glycemic control and reduce perinatal complications, along with its cost-effectiveness in pregestational type 1 and type 2 diabetes and gestational diabetes mellitus. In addition, we discuss future prospects for CGM coverage and indications based on this evidence.
The Emerging Importance of Mitochondria in White Adipocytes: Neither Last nor Least
Authors: Cai Juan , Wang Fenfen , Shao Mengle
Published: October 2023

The growing recognition of mitochondria’s crucial role in the regulation of white adipose tissue remodeling and energy balance underscores its significance. The marked metabolic diversity of mitochondria provides the molecular and cellular foundation for enabling adipose tissue plasticity in response to various metabolic cues. Effective control of mitochondrial function at the cellular level, not only in thermogenic brown and beige adipocytes but also in energy-storing white adipocytes, exerts a profound influence on adipose homeostasis. Furthermore, mitochondria play a pivotal role in intercellular communication within adipose tissue via production of metabolites with signaling properties. A more comprehensive understanding of mitochondrial regulation within white adipocytes will empower the development of targeted and efficacious strategies to enhance adipose function, leading to advancements in overall metabolic health.
SABERES EXPERIENCIAIS DA DOCÊNCIA PARA A EDUCAÇÃO BÁSICA: NARRATIVAS DE PEDAGOGAS EGRESSAS DO PIBID
Authors: Silva Fabrício Oliveira da , Alves Larissa da Conceição
Published: October 2023

O presente texto objetiva compreender os processos de constituição identitária, produção de saberes e aprendizagens experienciais da docência que são revelados no Programa Institucional de Bolsas de Iniciação à Docência – PIBID. O presente estudo é de base qualitativa, por primar pela produção de sentidos que o sujeito produz ao falar de si e de suas vivências formativas. Ancora-se na perspectiva da abordagem (auto)biográfica, tendo como dispositivo de coleta de informações as narrativas das egressas. Como resultados, as narrativas revelaram o desenvolvimento de fatores que se relacionam com os mecanismos de produção de identidades, saberes da profissão docente. As narrativas evidenciam como o PIBID possibilitou a produção de saberes relacionados com o planejamento e a diversidade em sala de aula, além dos processos de aprendizagem compartilhados com os pares no processo de construção do conhecimento profissional, revelando a dimensão do ambiente escolar como espaço importante de formação colaborativa.
Eurasian clinical guidelines for the prevention of cardiovascular diseases in childhood and adolescence (2023)
Authors: Kislyak O. A. , Leontyeva I. V. , Starodubova A. V. , Alersandrov A. A. , Bubnova M. G. , Varaeva Yu. R. , Kamalova A. A. , Kozlova L. V. , Pavlovskaya E. V. , Polunina D. A. , Revyakina V. A. , Rozanov V. B. , Sadykova D. I. , Slastnikova E. S. , Strokova T. V. , Ushakova S. A.
Published: October 2023

The EAC Guidelines represent the views  of the  EAC,  and were produced  after careful consideration  of the scientific  and medical knowledge,  and the evidence  available at the time of their publication.
On the α/Fe Bimodality of the M31 Disks
Authors: Kobayashi Chiaki , Bhattacharya Souradeep , Arnaboldi Magda , Gerhard Ortwin
Published: October 2023

An outstanding question is whether the α/Fe bimodality exists in disk galaxies other than in the Milky Way. Here we present a bimodality using our state-of-the-art galactic chemical evolution models that can explain various observations in the Andromeda galaxy (M31) disks, namely, elemental abundances both of planetary nebulae and of red giant branch stars recently observed with the James Webb Space Telescope. We find that in M31 a high-α thicker-disk population out to 30 kpc formed by a more intense initial starburst than that in the Milky Way. We also find a young low-α thin disk within 14 kpc, which is formed by a secondary star formation M31 underwent about 2–4.5 Gyr ago, probably triggered by a wet merger. In the outer disk, however, the planetary nebula observations indicate a slightly higher-α young (∼2.5 Gyr) population at a given metallicity, possibly formed by secondary star formation from almost pristine gas. Therefore, an α/Fe bimodality is seen in the inner disk (≲14 kpc), while only a slight α/Fe offset of the young population is seen in the outer disk (≳18 kpc). The appearance of the α/Fe bimodality depends on the merging history at various galactocentric radii, and wide-field multiobject spectroscopy is required for unveiling the history of M31.
Metallicity and Spectral Evolution of WASP 39b: The Limited Role of Hydrodynamic Escape
Authors: Louca Amy J. , Miguel Yamila , Kubyshkina Daria
Published: October 2023

The recent observations on WASP-39 b by JWST have revealed hints of high metallicity within the atmosphere compared to its host star. There are various theories on how these high metallic atmospheres emerge. In this study, we closely investigate the impact of extreme escape in the form of hydrodynamic escape to see its impact on atmospheric metallicity and spectral features such as CH4, CO2 and SO2. We perform a grid simulation, with an adapted version of MESA that includes hydrodynamic escape to fully evolve planets with similar masses and radii to the currently observed WASP-39 b estimates. By making use of (photo)chemical kinetics and radiative transfer codes, we evaluate the transmission spectra at various time intervals throughout the simulation. Our results indicate that the massive size of WASP-39 b limits the metal enhancement to a maximum of ∼1.23× the initial metallicity. When incorporating metal drag, this enhancement factor is repressed to an even greater degree, resulting in an enrichment of at most ∼0.4%. As a consequence, when assuming an initial solar metallicity, metal-enriched spectral features like SO2 are still missing after ∼9 Gyr into the simulation. This paper, thus, demonstrates that hydrodynamic escape cannot be the primary process behind the high metallicity observed in the atmosphere of WASP-39 b, suggesting instead that a metal-enhanced atmosphere was established during its formation.
GRB 221009A: Revealing a Hidden Afterglow during the Prompt Emission Phase with Fermi-GBM Observations
Authors: Zhang Hai-Ming , Huang Yi-Yun , Liu Ruo-Yu , Wang Xiang-Yu
Published: October 2023

Recently, LHAASO reported the detection of the brightest-of-all-time GRB 221009A, revealing the early onset of a TeV afterglow. We analyze the spectral evolution of the X-ray/gamma-ray emission of GRB 221009A measured by the Fermi Gamma-ray Burst Monitor (GBM) during the dips of two prompt emission pulses (i.e., intervals T
0 + [300–328] s and T
0 + [338–378] s, where T
0 is the GBM trigger time). We find that the spectra at the dips transit from the Band function to a power-law function, indicating a transition from the prompt emission to the afterglow. After ∼T
0 + 660 s, the spectrum is well described by a power-law function, and the afterglow becomes dominant. Remarkably, the underlying afterglow emission at the dips smoothly connect with the afterglow after ∼T
0 + 660 s. The entire afterglow emission measured by GBM can be fitted by a power-law function F ∼ t
−0.95±0.05, where t is the time since the first main pulse at T* = T
0 + 226 s, consistent with the TeV afterglow decay measured by LHAASO. The start time of this power-law decay indicates that the afterglow peak of GRB 221009A should be earlier than T
0 + 300 s. We also test the possible presence of a jet break in the early afterglow light curve, finding that both the jet break model and single power-law decay model are consistent with the GBM data. The two models cannot be distinguished with the GBM data alone because the inferred jet break time is quite close to the end of the GBM observations.
Testicular involvement of Brucellosis: A 10-year, multicentre study
Authors: Celik Mehmet , Akgul Fethiye , Alkan Sevil , Altındag Deniz , Esmer Fatih , Sahin Ahmet , Ipek Davut , Cicek Yeliz , Gurbuz Esra , Ceylan Mehmet Resat , Guler Dincer Nevin
Published: October 2023

Introduction: The genito-urinary system is one of the most common areas of involvement in brucellosis. To present the epidemiological, clinical, and laboratory characteristics of patients with testicular involvement associated with brucellosis, together with the diagnostic and therapeutic approaches.
Methodology: Patients followed up for brucellosis-related testicular involvement between January 2012 and November 2022 were included in the study. Brucellosis is defined as the production of Brucella spp. in cultures, or clinical symptoms together with the serum standard tube agglutination test titer of ≥ 1/160. Inflammation in scrotal Doppler ultrasonography was based on testicular involvement.
Results: A retrospective evaluation was made of the data of 194 patients with brucellosis-related testicular involvement. The rate of determination of testicular involvement in brucellosis was 2.57%. The most affected patients were determined in the 16-30 years age range. On presentation, brucellosis was in the acute stage in 83.7% of patients. The most common symptoms on presentation were swelling and/or pain in the testes (86.6%). In the patients where a spermiogram could be performed, oligospermia was determined in 41.7%, and aspermia in 8.3%. When the testicular involvement of brucellosis was evaluated, epididymo-orchitis was present at the rate of 55.7%, epididymitis at 27.3%, and testis abscess at 5.1%.
Conclusions: Although epididymo-orchitis was the most frequently determined form of involvement in this study, there was also seen to be a significant number of patients presenting with epididymitis. Male patients presented with the clinical status of brucellosis should be questioned about swelling and pain in the testes to avoid overlooking testicular involvement.
Justice climatique : les limites du name and shame
Authors: Mignon Colombet Astrid , Reboul Alfred
Published: October 2023

L’urgence climatique ne doit pas conduire à un accroissement des mises en cause personnelles, dont l’écho médiatique éclipse souvent l’issue judiciaire.
Intelligent synthesis of hyperspectral images from arbitrary web cameras in latent sparse space reconstruction
Authors: Chen Yenming J. , Tsai Jinn-Tsong , Hwang Kao-Shing , Chen Chin-Lan , Ho Wen-Hsien
Published: October 2023

Synthesizing hyperspectral images (HSI) from an ordinary camera has been accomplished recently. However, such computation models require detailed properties of the target camera, which can only be measured in a professional lab. This prerequisite prevents the synthesizing model from being installed on arbitrary cameras for end-users. This study offers a calibration-free method for transforming any camera into an HSI camera. Our solution requires no controllable light sources and spectrometers. Any consumer installing the program should produce high-quality HSI without the assistance of optical laboratories. Our approach facilitates a cycle-generative adversarial network (cycle-GAN) and sparse assimilation method to render the illumination-dependent spectral response function (SRF) of the underlying camera at the first part of the setup stage. The current illuminating function (CIF) must be identified for each image and decoupled from the underlying model. The HSI model is then integrated with the static SRF and dynamic CIF in the second part of the stage. The estimated SRFs and CIFs have been double-checked with the results by the standard laboratory method. The reconstructed HSIs have errors under 3% in the root mean square.
“Keep That German Kitsch Away from the Czech Hands!” Ethnic Cleansing in the Light of Material Culture: Furnishings of the Displaced Moravian and Silesian Nobility on the Post-1945 Brno Auction Market
Authors: Rusinko Marcela
Published: October 2023

The paper deals with the significant social restructuring and radical ethnic cleansing in post-Second World War Czechoslovakia borderlands as evidenced by the art market, where massive state appropriations and transfers of furnishings from the mostly ex-German and ex-Hungarian nobility residences manifested themselves in huge wave of frenetic auction sales. The uniquely preserved archive file on the Karel Ditrich Exhibition and Auction House in Brno enables us to reconstruct these processes within the scope of the entire Moravian and Silesian territory. The documents reveal the contemporary ethnic, social, and economic disputes, leading in the end to significant class and social transfers, i. e., new trends in living culture and collecting.
Impact of Carbon Capture (Storage) and Carbon Tax on Economic Dispatch of an Integrated Energy System
Authors: Tan Zhizhou , Lin Boqiang
Published: October 2023

Finding the balance between economy and low emission of an integrated energy system (IES) has become one of the current research hotspots. This article introduces the carbon tax and carbon capture (storage) technology within the framework of the IES model. The IES comprises of components such as combined heat and power units equipped with carbon capture facilities, wind power generators, photovoltaic panels, and energy storage systems. The objective function of the model is the minimization of operational costs. Low-carbon economic operation dispatching problem under the constraints of energy conversion, energy balance, and operation cost is studied based on a mix-integer linear programming model. Through sensitivity analysis, this study explores the impact of varying carbon tax levels on the operational costs and emissions of an IES while considering peak and valley price differences. The emission reduction potential of the IES under different policy and technology scenarios is also estimated.
Experimental Investigation of Friction Stir Welding on Al 2024-T3 and Al 7075-T6 Alloy
Authors: Mishra Gaurav , Mistri Ankita , Tarafdar Rajarshi Kumar , Kumar Shakti , Chattopadhyaya Somnath
Published: October 2023

Aluminum alloys are becoming increasingly popular due to their potential to offer superior durability while being lower in weight. Most industrial sectors, including transportation, aviation, marine, automotive, and others, have a strong interest in light-weight components, particularly in the transportation industry. Traditional joining techniques have a negative impact on the joining of these lightweight industrial materials, necessitating the development of new environmentally friendly joining methods. The lap joint of Al 2024-T3 and Al 7075-T6 alloys is done utilizing friction stir welding (FSW) with tool rotational speed (TRS) and tool travel speed (TTS) as process parameters. In addition, a tensile and microhardness test was performed to determine the mechanical characteristics of the weld joints. For FSW joints, the hardness of the stir zone at the weld center at 1000 RPM and 40 mm/min is 151.86 Hv. Carbon inclusion in the stir zone is demonstrated by EDS investigation of tool material dispersion in the weld region.
An Analysis of the Circularity of the Holes in the Drilling of Basalt Fiber Reinforced Laminates
Authors: Ayllón Jorge , Claver Juan , de Agustina Beatriz , Domingo Rosario
Published: October 2023

The application of basalt fiber reinforced composites has increased in recent years. However, its behavior during machining processes remains to be studied in depth, as drilling operations. The objective of this paper is to analyze the circularity of the holes at the exit of the drill in these composites. The laminates were obtained through basalt fiber fabrics and epoxy resin, with application of pressure and heat to achieve the final prepregs. These basalt fiber-epoxy laminates were used in experimental tests and drilled under different cutting conditions and three types of drill bits. The quality of the holes was measured through the outlet diameters, and thus determining the circularity of the holes. A three coordinate measuring machine was used in this process. Moreover a General Linear Model has been estimated, obtaining a coefficient of determination of 86.5%. The results have indicated that the drill bit type and its rotation speed are significant factors. Moreover, the outcomes have allowed to select a suitable type of drill bit, to limit the cutting conditions, and to identify the influential points, conditions that have provide undersized and oversized diameters.
Performance Analysis of the Protection Effect Cow Bone and Coconut Shell Particulates on 1170 Aluminium Alloy in Dilute Electrolytes
Authors: Loto Roland Tolulope , Ogunleye Ademola , Oladipupo Adeniyi , Ofordum Sonia , Ale Abisola
Published: October 2023

Particulates of cow bone (CB) and coconut shell (CS) were infused within the microstructure of 1170 aluminium alloy and studied for their influence on the corrosion resistance of the resulting aluminium matrix composites in 3.5% NaCl, 0.05 M H2SO4 and 3.5% NaCl/0.05 M H2SO4 solution by weight loss method. Corrosion rate data shows CB and CS significantly influenced the electrochemical properties of the composite. Protection performance data at 336 h of exposure shows CB and CS particulate significantly reduced the corrosion resistance of the aluminium alloy at all weight compositions in 3.5% NaCl solution. In 0.05% H2SO4 solution, CB improved the corrosion resistance of the composite at 5% - 15% weight composition (37.8%, 23.22% and 23.22%), while CS improved the corrosion resistance at 10% and 20% weight composition (37.65% and 28.52%). The corresponding values for CB in 3.5% NaCl/0.05 M H2SO4 solution occurred at 5% - 15% weight composition (34.26, 31.71% and 22.68%) while for CS it occurred at 10 and 15% weight composition (40.52% and 46.05%). Data from ANOVA statistical tool shows particulate weight composition and exposure time are both relevant determinant variables (greater than the theoretical significance factor) influencing the protection performance outputs of CB and CS with values ranging between 41.82% to 92.5% for weight composition and 5.68% and 53.03% for exposure time. Standard deviation data for CB particulate varied minimally only at 20% weight composition in 3.5% NaCl solution. The corresponding data at other CB weight compositions and for coconut shell at all weight compositions varied significantly due to thermodynamic instability.In 0.05 M H2SO4 and 3.5% NaCl/0.05 M H2SO4 solutions, all standard deviation values for CB and CS particulates (excluding CB at 29% weight composition) at all weight compositions vary minimally from the mean data signifying thermodynamic stability of the electrochemical reactions on the composite surfaces with respect to exposure time. The proportion of data above 20% protection performance for CB and CS particulates in 3.5% NaCl solution is 0% at margins of error of 0%. The corresponding values in 0.05 M H2SO4 solution are 15.18% and 15.32% at margins of error of 40% and 43% while the values from 3.5% NaCl/0.05 M H2SO4 solution are 14.78% and 15.5% at margins of error of 35% and 50%.
Experimental Studies on Self-Compacting Alkali Activated Slag Concrete Mixes Incorporating Reclaimed Asphalt Pavement as Fine Aggregate
Authors: Joy Aryamol , Manjunath R. , Neha S.N. , Prashanth M.H.
Published: October 2023

Here performance evaluation of Self Compacting Alkali Activated Slag Concrete incorporating Reclaimed Asphalt Pavement as fine aggregate was carried out. Investigation on mechanical properties by replacing the fine aggregate by Reclaimed Asphalt Pavement in different proportions were also evaluated. Development of Self Compacting Alkali Activated Concrete mixes (SCAAC) was made with GGBFS and Lime are used binders, with binder content varying between 550 to 650 kg/m3 of fresh concrete and lime content varying from 10% to 20% of binder content. The net W/B ratio of the mixes was kept around 0.57. The fine aggregate was replaced by Reclaimed Asphalt Pavement with percentage replacement from 50 to 100% of Crushed Stone Sand. The alkaline solutions had Na2O dosage percentages in the range 5-6% with a constant activator modulus maintained at 1. By using Minitab Statistical Software nine mixes were produced with 4 factors and 3 levels. In this study the TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution) optimization technique was carried out to know the effectiveness. Results showed the slump flow greater than 650 mm, with their L–Box, U-box and V-Funnel values ranging between 0.85,20mm and10s respectively, results showed enhanced mechanical properties as compared to control OPCC mix.
Dimensional Analysis of the Wear of 3D Printed Dies Used to Form PC and PVC Sheets by Thermoforming
Authors: Garcia-Romeu Maria Luisa , Ferrer Ines , Brisa Angel , Espinach F.J.
Published: October 2023

Polymers have been around for a while now, and for the time being they play a fundamental role in our society. As time passes, the number of polymer-based items increases. Thermoforming is a conventional polymer manufacturing process with high potential. This paper explores the surface quality of 3D printing dies after being used in a thermoforming process. A polylactic acid (PLA) die was printed using a Fused Deposition Modelling (FDM) The polymeric blanks formed were Polycarbonate (PC) and Polyvinyl chloride (PVC) sheets of 1.5 mm. The results reveal the effects of the temperature, the thermoforming process time and vacuum time on the wear of the top surface dis not surpass 1mm in the worst zone, and does not affect the polymeric formed sheets.
Parametric Design of a Structural Plate for a Microsatellite
Authors: Amores Alvaro Martin-Delgado , Andrés-Lopez Eva M. , Sanz-Lobera Alfredo
Published: October 2023

In this century, the development of space technologies has substantially increased. As space launchers improve their performance, space agencies have adopted the use of smaller satellites. Modern space platforms have structural requirements that entail the use of an optimized methodology for automating the creation of satellite designs. Parametrization can play a crucial role in this task. The aim of this paper is to parametrize a structural plate used in a microsatellite preliminary structure and analyze its mechanical behavior under the application of static forces. For such parameterization, a step-by-step procedure was developed using CATIA V5 and a Visual Basic Application was created to assist designers in managing the procedure. Once the preliminary designs were obtained, a parameter structural impact comparison was conducted using ANSYS. Finally, four preliminary designs which met the ASAP 5 launcher requirements were selected, and their structural behaviors were compared.
Experimental Analysis of High-Strength Concrete Using Granite Aggregates
Authors: Karthik Banda Lakshmi Sai , Mahajan Akshat , Jaggi Sahil
Published: October 2023

The present study investigates the effect of incorporating metakaolin and silica fumes in the production of high-strength concrete along with partial replacement of coarse granite aggregates in the high-strength concrete. The higher compressive strength, refined microstructure, and decreased permeability of high-strength concrete are some of the properties responsible for its trending use in the modern construction industry. The main purpose of this research is to evaluate the effect of the replacement of coarse granite aggregates with natural aggregates on the mechanical and durability properties of high-strength concrete. For understanding the effect of metakaolin, silica fume, and granite aggregates on the properties of high-strength concrete, various specimens such as cubes, cylinders, and cylindrical discs were cast and tested after 7, 14, and 28 days of curing. Various concrete mixes were prepared by adding silica fume at 5%, 7.5%, and 10% and metakaolin at 5%, 7.5%, 10%, 12.5%, and 15% in concrete production. Furthermore, High-strength concrete mixes were also prepared by replacing natural coarse aggregates with granite coarse aggregates by 25%, 50%, 75%, and 100% to study the effect of replacement percentage on the concrete properties. Test results indicated that the compressive strength and split tensile strength of the concrete mix increased with the increase in the replacement percentage of granite aggregates, with the highest strength seen at complete replacement with granite aggregate due to the enhanced compressive strength of such aggregates in comparison with the natural coarse aggregates. In various mixes cast using metakaolin and silica fume, the highest compressive strength was seen in a mix containing 10% metakaolin and 7.5% silica fume, and results of other mixes indicated that the use of silica fume and metakaolin are viable options for high-strength concrete production in our experimental study.
Development of a Low Cost Extrusion Based 3D Printer for High Performance Engineering Polymers
Authors: Ioannidis Adamos , Boufali Maria , Vosniakos George Christopher , Anagnostakis Theologos
Published: October 2023

The development of a low cost 3D printer is presented for high performance polymers by example of a PEI type material. The development steps and technical alternatives opted for during the design process are outlined in two cycles targeting first printing of non-demanding thermoplastics, such as ABS, PLA etc., followed by an upgrade to printing PEI and similar high performance polymers. Subsystems discussed pertain to the frame, CNC axes including feed motors and motion control, the extruder, hot end and nozzle. Of particular interest are modifications concerning the temperature setting and regulation subsystems of the printer work volume and the printing table. Calibration procedures with pitfalls and solutions is discussed and a documented series of finally successful tests for Ultem1010TM is presented.
Characterisation of the Performance of a Structured Light Digitising Sensor by Using Different Materials and Surface Finishes
Authors: Zapico García Pablo , Cuesta Eduardo , Meana Víctor , Suárez Germán , Mateos Sabino , Rodríguez González Pablo
Published: October 2023

The advantages of non-contact digitising systems over contact systems are undeniable. They allow capturing more information per unit of time with less accessibility problems and without alter the digitised surface. Although many of these systems have been developed with the aim of replacing contact systems in metrological verification tasks, generalist techniques such as photogrammetry, structured light, etc., have been developed over the years for digitising archaeological remains, works of art or living biological systems, among others. As is the case for non-contact measurement-oriented systems, for these generalist systems there are still difficulties in positioning them along a metrological traceability chain if they are required for any kind of measurement. This is due to the lack of specific standards, as well as the strong influence of the optical properties of the digitised surface on the quality of the results obtained. It is therefore necessary to develop calibration procedures and characterisation work to analyse this influence. The aim of this work is to characterise the metrological performance of one of these generalists structured light devices, Einscan-SP by Shining 3D, in the digitising of different calibration spheres made of different materials (WC, Al2O3, ZrO2, etc.) with different surface finishes (shot-blasted, polished, coated). As quality indicators, the number of points captured, the quality of the point cloud as well as the dimensional and geometrical deviation from the results obtained with a high-performance contact measurement system shall be used. Apart from the raw data, the influence of applying filtering to the captured clouds is analysed. The results of this work allow recommendations to be made regarding the material and finish of the spheres to be used, as well as the filtering to be applied, if necessary, in order to assess the metrological performance of this type of equipment.
Ticks and crosses in primary mathematics assessments: What purpose do they serve?
Authors: Chihodzi Brian , Mwakapenda Willy , Ngulube Beatrice
Published: October 2023

Ticks and crosses (TCs) are a common aspect of teachers’ classroom practice in relation to assessment in many learning areas including mathematics. Putting TCs in learners’ written work is a strategy of feedback. Even though these TCs are frequently used in different types of mathematics assessments, there is limited research in relation to what they actually stand for and what functions they are designed for and especially what purpose they eventually serve in practice. This article emerged from a broader study that aimed at exploring classroom formative assessment practices of Grades 4–6 mathematics teachers, a learning goals and documentary analysis. Since this study was qualitative in nature, we used qualitative, non-probability sampling to recruit respondents according to pre-selected criteria relevant to our research questions. The study participants were 43 qualified and experienced Intermediate Phase mathematics teachers and 95 Grades 4–6 learners from the Tshwane South district, where a phenomenon of low achievement was of great concern. We engaged in document analysis of all the 95 learners’ mathematics workbooks. Questionnaires were administered to the 43 teachers. We report on an analysis of teachers’ assessment practices of Grades 4–6 learners’ mathematics work. We narrate the extent of the use of TCs among teachers from selected schools in Tshwane South district in Gauteng, South Africa. Our analysis shows that while there is prevalent use of TCs among teachers, there are critical gaps in relation to knowledge of TCs in assessing mathematics. We present a qualitative and quantitative data analysis to illustrate how these were used in connection with assessment of learners’ mathematics work linked to the concepts of numerical, geometric, and graphical relationships. We use our analysis of the vignettes to explore and argue that teachers use TCs without adequate understanding of what these actually mean in relation to assessment broadly and assessment intended at collecting and clarifying goals for mathematical learning specifically. Despite teachers having mathematical qualifications and a repertoire of experience for teaching, the majority of teachers grappled with understanding mathematical concepts as evidence in how they marked learners’ mathematics work. The study also found that teachers’ understandings of assessment of mathematics were diverse and largely inconsistent with the formal definitions of mathematics.Contribution: This study indicated that there are critical gaps in relation to knowledge of TCs in assessing mathematics. A clear-cut marking policy will guide teachers to provide effective marking using TCs.
Infusing Blockchain in accounting curricula and practice: expectations, challenges, and strategies
Authors:   Arkansas State University, Desai Hrishikesh
Published: October 2023

Blockchain, or distributed ledger technology, is acknowledged as the most significant and disruptive innovation in accounting since the double-entry system. All the ‘Big Four’ accounting firms and several major S&P500 companies have invested considerable resources in developing blockchain technologies. Some maximalists of this technology have even hinted that it will fundamentally change accounting and auditing if all transactions can be captured in an immutable blockchain. It is a daunting task for accounting academics to determine how to infuse blockchain in accounting curricula since the body of knowledge in this area spans several disciplines, such as, accounting, economics, finance, computer science, and engineering. It is also difficult for accounting practitioners to know what aspects of this technology are relevant to accountants for the same reason. In this paper, using the diffusion of innovation theory, I help explain why we need to incorporate the accounting-relevant aspects of blockchain in accounting curricula and practice and how we can accomplish that goal without introducing unnecessary technological complexity and jargon. I also provide eight case studies, which were successfully trialled by me at CPA organization/association conferences, that can be used to communicate the accounting relevant aspects of blockchain in the domains of accounting, tax, and audit services.
Mechanical Assessment of Carbon–Luffa Hybrid Composites for
Automotive Applications
Authors: Natrayan L. , Kaliappan S.
Published: October 2023

In order to determine if carbon–luffa hybrid composites are appropriate for
automotive applications, this study gives a thorough mechanical evaluation of
such materials. A potential path to improving the performance of automotive
components is provided by combining the remarkable strength and stiffness of
carbon fibers with the lightweight and environmentally friendly qualities of
luffa fibers. The mechanical characteristics of the hybrid composites were
characterized using a variety of experimental examinations, including tensile,
flexural, and impact testing, and contrasted to those of traditional materials
often used in the automobile sector. The composite containing 85% epoxy and 15%
carbon fibers displayed the best tensile strength among the examined samples,
reaching 168.58 MPa. However, 85% epoxy, 7.5% luffa, and 7.5% carbon fibers had
a remarkable bending strength of 110.25 MPa. Notably, the B-type specimens
distinguished themselves from the others with their low void content of 0.72%
and low moisture absorption. The study’s findings offer important information on
the viability of using carbon–luffa hybrid composites as lightweight,
high-performance substitutes in various automotive applications, advancing the
development of environmentally friendly automobile design and production.
Synergistic Production of Hypochlorite and Hydrogen through PEM Water Electrolysis
Authors: Lee Donghyeon , Choi Mi-Jin , Park Mi Jeong , Park Jongkwan
Published: October 2023

Objectives : This study aims to assess the feasibility of simultaneously producing hydrogen and hypochlorous acid using a 2-compartment PEM water electrolysis cell with an installed membrane electrode assembly (MEA).Methods : External power was applied to the PEM water electrolysis device through a potentiostat to induce the electrolysis reaction and to confirm the production of hydrogen and hypochlorite simultaneously. Linear Sweep Voltammetry (LSV) experiments were conducted, thereby determined the minimum voltage required for the electrolysis. Constant current experiments were performed by applying a fixed current of 1 A for 1 hour, measuring voltage changes every second to evaluate the stability and efficiency of hydrogen production. The hydrogen production rate was measured using a mass flow meter, while the hypochlorite production was determined using a portable free chlorine photometer.Results and Discussion : In this study, the minimum voltage required for hydrogen generation in a PEM water electrolysis cell was investigated using LSV with Deionized (DI) water. The results showed that the current increased from around 1.4 V, indicating an approximate voltage efficiency of 82%. NaCl was introduced to the anode in the PEM electrolysis cell to induce electrochemical reactions. When the anolyte was NaCl, the voltage was observed to increase by 0.77 V compared to using DI water. Optimization experiments were conducted to investigate the influence of electrolyte concentration and flow rate on hypochlorite and hydrogen production. As the electrolyte concentration increased, the hypochlorite generation also increased, with a maximum of 104±0.50 mg/L observed with NaCl 10 g/L. Additionally, when the flow rate was reduced, the hypochlorite production increased, and at a reduced flow rate of 5 mL/min compared to 20 mL/min, hypochlorite generation increased by 127.3%. However, the hydrogen production showed no significant variation with NaCl concentration or flow rate.Conclusion : This study explores a novel approach using PEM water electrolysis technology to simultaneously produce hydrogen and chlorinated disinfectants. The research employed a PEM electrolysis cell with the MEA to generate both chlorine-based compounds and hydrogen. By varying the concentration and flow rate of the anolyte, the production efficiencies of hypochlorite were compared. This system showed that PEM electrolysis can be a promising alternative for disinfection and energy production in terms of environmental protection and cost-effectiveness.
Some generalizations of the variety of transposed Poisson algebras
Authors: Sartayev B. K.
Published: October 2023

It is shown that the variety of transposed Poisson algebras coincides with
the variety of Gelfand-Dorfman algebras in which the Novikov multiplication is
commutative. The Gr\"obner-Shirshov basis for the transposed Poisson operad is
calculated up to degree 4. Furthermore, we demonstrate that every transposed
Poisson algebra is F-manifold. We verify that the special identities of
GD-algebras hold in transposed Poisson algebras. Finally, we propose a
conjecture stating that every transposed Poisson algebra is special, i.e., can
be embedded into a differential Poisson algebra.
What can go wrong with the medication adherence a patient suffers due to diabetes distress? A narrative review
Authors: Mulyani Risya , Suharjono Suharjono , Suprapti Budi , Hermansyah Andi
Published: October 2023

Background: Type 2 Diabetes Mellitus (T2DM) is a major public health concern associated with distress. Distress is a rational emotional response to living with T2DM. Diabetes distress has been found to significantly affect the clinical outcome of T2DM. However, little is known regarding how distress may affect medication adherence.
Objective: To investigate the relationship between distress and poor medication adherence in people with T2DM.
Method: A literature search was conducted to identify relevant research articles published from 2014 to 2022 in three electronic databases (Scopus, PubMed, and SpringerLink) regarding “diabetes distress”, “T2DM management” and “medication adherence”. In addition, a search was also carried out using Google Scholar.
Results: A total of seven articles were identified. Amongst these articles, three studies revolved around evaluating the effect of diabetes distress on blood glucose control. All articles mentioned the significant association between distress and poor medication adherence, leading to seemingly comprehensive findings regarding the impact of diabetes distress on T2DM patients.
Conclusion: It is important for healthcare providers, particularly pharmacists, to understand the holistic feature of T2DM patients.