bluuebunny/crossref_metadata_2025 huggingface dataset:
Challenges and Opportunities of Big Data Analytics for Human Resource Management in Mining and Metal Industries
Authors: Mishra Prakash Chandra , Mishra Pradipta Kumar
Published: February 2024

Big data analytics has been transforming various industries and sectors including mining, metals, metallurgical, etc., and the mining sector, known for its complex and dynamic workforce requirements, is increasingly turning to Big Data Analytics to optimize its Human Resource Management (HRM) practices. The mining sector, being a significant economic segment, contributes to economic growth and is confronted with the dual challenges of a rapidly aging workforce and a shortage of skilled talent. As the mining industry is facing a talent crunch, HR has a significant role in attracting and retaining new talent in this industry, as well as ensuring that competent talent is brought in to meet the sector’s future demands Big data analytics for HR refers to the use of data analysis techniques to gain insights into employee behavior, engagement, productivity, and retention. The purpose of this paper is to explore the challenges and opportunities of big data analytics for HR, best practices for implementing it, and case studies of companies that have successfully implemented big data analytics for HR. The paper begins by outlining the importance of big data analytics for HR, highlighting its ability to provide HR professionals with a better understanding of employee behavior, engagement, and motivation. The challenges of big data analytics for HR are then discussed, including data quality and accessibility, integration of data from various sources, protection of data privacy, lack of expertise and resources, and resistance to change and adoption. The opportunities of big data analytics for HR are then presented, including predictive analytics for talent management, data-driven recruitment and selection, employee engagement and retention, performance management and productivity, and diversity, equity, and inclusion. Best practices for implementing big data analytics for HR are also discussed, including defining clear objectives and metrics, selecting the right tools and technologies, building a data-driven culture, collaborating with IT and other departments, and ensuring data privacy and security. Case studies of successful big data analytics in HR are presented to provide real-world examples of companies that have leveraged big data analytics to improve their HR functions. Examples include IBM's talent analytics program, Google’s use of big data analytics to identify key drivers of employee satisfaction and engagement, and leading mining company, referred to as “MinerCo,” leveraged Big Data Analytics to address HRM challenges and harness opportunities for improvement.
Numerical Investigation on Aerodynamic Performance of Helical Savonius Rotor Inspired by Natural Shapes
Authors: Bagade Pramodkumar M. , Bagade Preeti P. , Chaudhari Ashish , Ranjan Prabhat , Shirke Samartha , Sedani Chetankumar
Published: February 2024

There have been extensive studies conducted on Horizontal Axis Wind Turbines (HAWT) at relatively moderate to high wind speed regions. However, such detailed investigations for Vertical Axis Wind Turbines (VAWT), specifically for low wind speed terrains are amply reported. This motivates us to conduct research to explore possibilities in improving performance of VAWT in low wind speed terrains, which is attempted in the present work. This is required due to the fact that most of regions do not have sufficient extractable wind energy due to low speeds. VAWTs can perform at such low wind speed, but are less efficient. Improving efficiency of VAWT will solve the purpose. Hence, the present study is aimed at finding the performance characteristics of VAWT for low Wind speed configurations. Various parameters affecting power generation are investigated. Numerical analyses on various configurations are conducted to study the effects of twist angle, free stream velocity, number of blades. Computational results obtained have been in good agreement with the established results for semi-circular Savonius rotor profile. The results suggest that for low wind speed terrains, there is a need to explore the combination of lift and drag type of profiles, which could be used for the utilization of available wind power. Hence, naturally inspired shapes (profiles) were investigated for the possible solution of combined lift and drag type wind turbines at low speeds. The blade shape for such combined lift and drag type wind turbine were deduced from the available literature. It is well established that the naturally inspired shapes as noted in sea conch follow golden ratio in its contours. The present study provides an insight on the characteristic curves of VAWT for low wind speed terrains, effects of various geometric and flow parameters suitable for low wind speed terrains.
Analysis of Vortex Dominated Flow over Double Delta Wing
Authors: Roy Animesh , Biswas Samrat , Prabir Kumar De  , Majumdar Bireswar
Published: February 2024

The maneuverability of fighter aircraft designed using double delta wing configuration at low subsonic speed in addition to under high angle of attacks are highly appealing and fascinating to comprehend. Flow pattern formed by double delta wing help to facilitate lifting force under high angle of attack and at such low subsonic speed. In comparison to delta wing, vortex formations by strake part of wing play an important role to create a persistent vortex core capable of delaying stalling. In this investigation, force coefficients of 75°/45° double delta wing configuration is extracted both from wing tunnel experiment and numerical calculation between 0° to 30° angles of attack at Reynolds number of 1.4 × 105 based on root chord length. It has also been attempted to investigate the flow pattern formation over wing leeward surface, interaction between vortices formed by strake/wing based on Q-criterion and pressure distribution along propagation path of vortices obtained from CFD (Computational Fluid Dynamics) calculations. Implications of interplay between vortices and pressure distribution in lift generation have also been analyzed. It has been found that around 15° angle of attack strake and wing vortices merge and gets more intensified. With higher angle of attack the lift generation significantly diminishes because of vortex bursting
A Review on “Wind energy fuel as a Power Source for Automobiles”
Authors: Priyam Abhishek
Published: February 2024

Requirement of energy for automobiles is increasing everyday as we take a step towards development. The use of nonrenewable energy sources such as fossil fuels is leading to an increase in pollution. There was research performed by the United States Environmental Protection Agency (EPA) in 2007 and it was found that a normal family car produces approximately three to four tonnes of carbon dioxide per year, similarly six tonnes of carbon dioxide was produced by a large four-wheel drive like a van yearly. The present energy scenario of energy generation and the pollution caused by automobiles due to conventional energy sources have made it necessary to harness energy from other unorthodox sources to run them. Electric vehicles have been developed to solve this problem, in a sense that they don’t release any harmful gases such as carbon dioxide and carbon monoxide. One major problem which still exists even in electric automobiles is that the electricity that they utilize is still generated from conventional sources. Thus, if we can somehow generate electricity from unconventional sources, it can solve our former problem. Wind energy fuel which can be harnessed from a moving vehicle is one of such unorthodox sources that could be harnessed and subsequently used to power automobiles. This paper is a review of different ways of how wind power can be harnessed to fully power an automobile.
An Empirical Study for Improving the Quality of Fly Ash Added Bricks
Authors: Bhattacharya Madhuri , Chakraborty Abhijit
Published: February 2024

Because of urbanization, demand for housing is increasing day by day in India. Traditional clay brick leads to resource scarcity and environmental pollution. To overwhelmed this problem, manufacturing of bricks was done using the waste of thermal power plants like Fly Ash along with Sand and Cement (FAS-C Brick) as key ingredients. Fly ash is an Industrial by-product of thermal power plant. An experimental study of mix-design was carried out to increase the quality of the FAS-C brick. This paper attempt to formulate the mix design of fly ash based brick by process planning. Laboratory tests were conducted to determine the compressive strength and water absorption of the bricks. The main objective of the research study was to design the Fly Ash, Sand, Cement (FAS-C) brick and find the compressive strength using different mix design methods as a part of quality improvement process.
Relative Characteristics of Various Nano-Cement Composite
Authors: Das Arpita , Saha Showmen , Singh Purushottam Kumar
Published: February 2024

A comparative study between two nano cementitious materials, i.e., Graphene Nanoplatelet (GNP) and Montmorillonite Nano Clay (MNC) cement matrix are considered in this paper. Nanofibers are introduced as an alternative to macro reinforcement to enhance the mechanical property and reduce the crack growth in the cement matrix at the nanoscale. Various analytical simulation has been carried out by ANSYS 15.0 to know the optimum percentage of water. A 3D Represent Volume Element (RVE) is used to simulate nano cementitious material as the material sizes differ. RVE is the minimum volume upon which a measurement can make, yielding an expected value of the entire. The GNPs and MNCs are added to the cement matrix with various percentages (0.02%, 0.08%, 0.1%, 0.15%, 0.17%, 0.22%, and 0.3%) by the weight of cement. After simulating the pullout models with proper boundary conditions, the behavior of nano-cementitious material is observed. A comparative study of all percentage variations revealed that the mechanical property increases up to 0.17% and 0.22% for GNPs and MNCs. It also observed that GNPs cementitious material performs better than MNCs cement matrix.
Comparative Studies of Wear and Corrosion Behaviors of Conventional and Nano Filler Based Solvent Free Tarfree Epoxy-amine Coatings
Authors: Ghosh Ujjwal , Duari Koushik , Pramanick Akshay Kumar , Debnath Sourav , Duari Buddhadeb
Published: February 2024

Tar-free epoxy coatings aid in protecting intact of Mild Steel (MS) substrate immersion condition of atmosphere. From lot of study revised and assorted that tar free (light colour) epoxy amine coating developed which give better performance for protection in long term. By ASTM method, wear behaviors as well as mechanical properties of quartz (micro silica) and organosiliane (nano silica) based tar-fee epoxy coatings were studied. DETA cured epoxy composites coatings were characterized by FTIR spectroscopic technique, powder X-Ray Diffraction (XRD), SEM and FESEM analysis. Transmission Electron Microscope (TEM) confirmed the size of nano particles. The data of wear index of nano fillers based epoxy coating was observed 8.3mg/1000cycles which indicate such an improvement of of abrasion behavior. Corrosion behaviors of the coated MSspecimens were evaluated by Cathodic Disbondment (CD) test immersion in 3.5% NaCl solution. Water absorption and chemical resistance also studied of composite coatings. All over tar-free epoxy-amine nano composite coating shows good result.
Current Advancements in Use of Nanoparticles Synthesized from Metal Oxides for Some Typical Prescription Antibiotics Degradation
Authors: V. Venkata Ramesh Reddy  , M. Viswanadham
Published: February 2024

Antibiotics are the most commonly utilized medications worldwide, with extensive usage not only in human healthcare but also in veterinary medicine and agriculture. The widespread misuse and overuse of antibiotics have led to their presence in various environmental sources such as soil, surface water bodies, groundwater reservoirs, drinking water, and other ecological media. This, along with insufficient sewage treatment capacity, causes a surge in antibiotic pollution in the environment. Unrestricted use of antibiotics encourages the development of antimicrobial resistance, which can lead to a range of problems. Presently, the predominant methods employed to eliminate antibiotic contaminants from water comprise physical adsorption onto adsorbents, chemical flocculation and chemical oxidation. Regrettably, these methodologies yield substantial volumes of sludge laden with chemical agents and polymer electrolytes, there by complicating the management of these sludge accumulations. Antibiotic pollutant residuals can be broken down using a variety of photo catalysts synthesized from metal oxides, offering a multitude of efficient solutions to the challenges involved. This study presents a comprehensive exploration of several facets. It encompasses an examination of the removal processes applied to four frequently prescribed antibiotics and delves into the latest progressions involving diverse nanostructure-based photo catalysis with help of metal oxide nanoparticles. Simultaneously, it addressed the conceivable origins of antibiotic pollutants disseminated throughout the ecological continuum. Moreover, it delves into the adverse consequences and risks posed by antibiotics present in wastewater, both in terms of their impact on the environment and their potential implications for human health.
Suitability Study on Strength Properties of Crumb Rubber in Geopolymer Concrete
Authors: Nair Divya , Kulkarni Dr. Madhavi Gopal Rao
Published: February 2024

Due to an incessant upsurge in the construction industry and the steep increase in the cost of raw materials, researchers are focusing on various resources that can be replaced with cement as a construction material. One such material that is rich in Silicon and Aluminium is Flyash. Flyash as an additive to concrete made a way for a contemporary material that was coined as Geopolymer Concrete (GPC). In Geopolymer, alkaline activators such as sodium hydroxide or potassium hydroxide are mixed with sodium silicate so as to form geo-polymerization with products like GGBS, flyash etc. and which as a result binds the aggregate. This paper mainly emphasizes on role of Crumb Rubber (CR) in the formation of GPC replacing the fine aggregates by various percentages (5% - 15%) of CR. The Geopolymer mix design is proposed for M40 grade. Compressive and tensile strength tests were carried out on concrete modified with Flyash and GGBS (Ground Granulated Blast Furnace Slag) in 60:40 ratios. At a molarity of 14M, ratio of sodium silicate to sodium hydroxide is maintained as 2.5. The samples were placed in an ambient condition and were tested for strength on 7, 14 and 28 days. Based on the experimental results, it was observed that use of CR in GPC does not enhance the strength properties and cannot be used in high-end structural applications only.
Relacja z V Kongresu BIO2023
Authors: Grzywacz Kamilla
Published: February 2024

Relacja z V Kongresu BIO2023
The methods of measurement of internal resistance of chemical current sources (CCS)
Authors: Kosyuk V. I. , Shirokov I. B.
Published: February 2024

The analysis of existing methods of measurement of internal resistance of chemical current sources (CCS) was carried out. Their shortcomings were noted. The method of measurement of full internal resistance the CCS based on the analysis of transient characteristics of a charge from it of the condenser of known capacity is considered.
Structural Model of Postpartum Depression Based on Social Support and Marital Satisfaction by Mediating Resilience
Authors: Khadijeh Honarmandnezhad , Maryam Kouroshnia , Nadereh Sohrabi , Maryam Zarnaghash
Published: February 2024

Background & Objectives: This study aimed to present a structural model of postpartum depression based on social support and marital satisfaction with the mediation of resilience.
Materials & Methods: The current research method was descriptive and type of structural equation modeling. The statistical population of the research included all mothers who had given birth and were referred to Jahrom University of Medical Sciences hospitals, and 415 mothers who referred for natural delivery and caesarean section using the available sampling method and completed the Edinburgh Postnatal Depression scale (EPDS), the Sherbourne and Stewart Social Support Survey (MOS-SSS), the Enrich Marital Satisfaction Scale (EMS) and the Connor-Davidson Resilience Scale (CD-RISC) four to eight weeks after delivery. Data analysis was done using the (AMOS) software version 24, and the reliability of the tools was checked by Cronbach's alpha method and with the help of SPSS software version 23.
Results: The findings of the research showed that social support had a significant effect on postpartum depression only indirectly (β = -0.10, p = 0.02) through resilience. In addition, it was found that marital satisfaction can both directly (β = -0.36, p = 0.0001) and indirectly affect postpartum depression through resilience (β = -0.22, p = 0.009).
Conclusion: Resilience can be considered an anti-depressant factor in the postpartum period. Psychological interventions aimed at increasing resilience, social support and marital satisfaction, can play a significant role in preventing postpartum depression.
A Comprehensive Epidemiological and Clinical Study of Chronic Rhinosinusitis: First Report from an Iranian Sinusitis Registry Center
Authors: Amirhossein Darabi , Marjan Zamani , Allahkarm Akhlaghi , Marzieh Mahmoodi , Ali Movahed , Reza Kaboodkhani , Amir Goreh , Shokrollah Farrokhi
Published: February 2024

Background & Objective: Chronic rhinosinusitis (CRS) is a high prevalent disease throughout the world. The aim of this study was to investigate the epidemiological and clinical characteristics of the CRS patients.
Materials & Methods: A total of 241 CRS patients aged 15-70 years were recruited. The prevalence of allergic diseases and its association with CRS, disease severity, and quality of life (QoL) were assessed using GA2LEN and SNOT-22 questionnaires, respectively. Patients' clinical diagnoses and allergic comorbidities were evaluated using paranasal sinus computed tomography (CT), nasal endoscopy, and paraclinical tests (smell identification test, fractional exhaled nitric oxide (FeNO), skin prick test (SPT), pulmonary function test (PFT)).
Results: The mean (±SD) age of all participants was 40.1±11.1 years, with a gender distribution of 56% male and 44% female. Nasal polyps (NP) were diagnosed in 42.4% of patients. The total mean SNOT-22 scores and the mean scores of the nasal symptoms category were significantly higher in CRS patients with NP (CRSwNP) compared to CRS without NP (CRSsNP) (OR = 2.3, 95%CI = 9.6–0.55, P = 0.028). Furthermore, there was a significant association between CRSwNP and persistent allergic rhinitis comorbidity (P = 0.006). Finally, a significant association was found between CRSwNP and severe SPT reactivity to Dermatophagoides farina and date palm pollen (P = 0.04 and P < 0.001, respectively).
Conclusion: This study suggests that higher SNOT-22 scores may impact QoL in CRSwNP patients. Additionally, a significant association was found between CRS and respiratory allergic diseases.
Phytochemical and Cytotoxic Properties of Gum and Leaf Extracts of Ferula assafoetida in Breast Cancer
Authors: Alireza Moulazadeh , Razieh Ranjbar , Amin Dakhili Ardestani , Kamran Ranjbar , Amin Kouhpayeh Seyed , Maryam Maghbool , Sohrab Najafipour , Fatemeh Najafipour
Published: February 2024

Background & Objectives: Breast cancer, a significant threat to women's health, is associated with a high annual mortality rate. Oxidative stress, characterized by the accumulation of reactive oxygen species, plays a pivotal role in cancer development. Ferula assafoetida, a traditional medicinal plant, has been widely used in cancer treatment. This study aims to compare the cytotoxic effects, phytochemical profiles, and antioxidant activities of Ferula assafoetida gum (FAGE) and leaf (FALE) extracts.
Materials & Methods: The herbal extracts from FAGE and FALE were prepared using the maceration method in 70% v/v ethanol. The phenolic content and radical scavenging activity of the extracts were assessed using the Folin-Ciocalteu and diphenylpicrylhydrazyl (DPPH) assays, respectively. The cytotoxic effects of the extracts were examined on the MDA-MB-231 and MCF-7 cell lines through the MTT assay. Additionally, the morphological changes of the cell lines were observed using an inverted microscope.
 
Results: The phenolic content in FAGE (142.25± 19.35 µgGAE/mg) was significantly higher (P=0.01) than that in FALE (48.15± 3.01 µgGAE/mg). Additionally, the radical scavenging activity and cytotoxic effects of FAGE were also significantly stronger than those of FALE (P< 0.05). Regarding the cytotoxic effects of the extracts, FAGE exhibited IC50 values of 80.59± 10.98 and 59.39± 15.89 µg/mL for MCF-7 and MDA-MB-231 cells, respectively, after 72 hours of incubation.
Conclusions: FAGE exhibited a greater cytotoxic effect on the MDA-MB-231 cell line than on the MCF-7, possibly following an estrogen-independent pattern. It appears that FAGE holds significant potential in refining oxidative stress, thereby inhibiting cell proliferation.
Profesjonalna formacja dziennikarska w przestrzeni europejskiej – analiza obowiązków dziennikarzy na podstawie reguł profesji zawartych w statutach agencji prasowych, statutach dzienników, w kodeksach etycznych UNESCO i Unii Europejskiej
Authors: Leśniczak Rafał
Published: February 2024

Artykuł analizuje reguły zawodu dziennikarza zawarte w regulacjach agencji prasowych, dzienników oraz w kodeksach etycznych UNESCO i Unii Europejskiej. Przedmiotem badań stały się wybrane, reprezentatywne agencje oraz dzienniki następujących krajów europejskich: Włoch, Hiszpanii, Niemiec i Wielkiej Brytanii. Artykuł nie jest jedynie zwykłym opisem dokumentów regulacji zawodowych, ale raczej „dyskusją” wypracowaną w oparciu o te źródła normatywne, które umożliwiają wyciągnięcie stosownych wniosków na temat podstawowych obowiązków profesji dziennikarskiej.
Pojęcie „misji” w polskiej radiofonii
Authors: Stachyra Grażyna
Published: February 2024

Ustawa o Radiofonii i Telewizji uchwalona w grudniu 1992 roku dała podwaliny nowego porządku medialnego w Polsce po upadku komunizmu. Mimo kilku nowelizacji, jest wciąż obowiązującym aktem. Jedną z istotnych regulacji wprowadzonych ustawą jest pojęcie „misyjności” nadawców publicznych, jednak artykuł 21 nie definiuje precyzyjnie tego pojęcia. Zamiast tego nakłada jedynie na publicznych nadawców obowiązek realizowania licznych zadań. Ustawa opisuje dziewięć ogólnych zaleceń dotyczących obszarów realizacji misji. Chociaż dotyczą tylko nadawców publicznych, niektóre z nich można odnaleźć u nadawców społecznych i (w pewnym stopniu) komercyjnych. Artykuł analizuje pojęcie „misji publicznej” w polskim radiu nie tylko w aspekcie prawnym, ale też poprzez refleksję nad zawartością programową stacji radiowych w kontekście współczesnego dyskursu publicznego. Pojawienie się niepublicznych nadawców w latach dziewięćdziesiątych zaowocowało głównie rozrywkowymi strategiami programowymi adresowanymi do precyzyjnie definiowanych, dobrze sytuowanych, przedsiębiorczych odbiorców. Skutkowało to wykluczeniem niektórych grup słuchaczy (np. rolników, emerytów, dzieci) ze sfery zainteresowań komercyjnych stacji. Z drugiej zaś strony media publiczne (oraz do pewnego stopnia społeczne) zostały związane narzuconym im obowiązkiem wypełniania misji. Problem „misyjności” (lub jej braku), jej zakresu oraz sensu, był dyskutowany w ciągu ostatnich dwóch dekad. Niniejszy artykuł przybliża te kwestie.
Biografia i autobiografia w literaturze audialnej
Authors: Bachura-Wojtasik Joanna
Published: February 2024

The article discusses the audio form of the biography and autobiography – as seen in the radio-drama and documentary – as a distinct form in audio literature. The article is inspired by the theoretical findings of Philippe Lejeune concerning autobiographical literature and the personal diary genre. Theoretical reflections are complemented by selected examples of artistic audio genres. The examples of radio-dramas and artistic documentaries (features) discussed illustrate the specificity of the radio medium, which, on the one hand, opens up new opportunities for documentaries that are impossible to achieve in printed literature, while, on the other hand, it also imposes restrictions.
Perswazyjnie o warsztacie dziennikarskim (na przykładzie publikacji w rubryce „Media – warsztat” miesięcznika „Press”)
Authors: Worsowicz Monika
Published: February 2024

The article is dedicated to aspects of a journalist’s work published between 1996–2014 in
the professional monthly magazine Press, aimed at people interested in media, advertisement and
public relations. These statements help other media professionals become familiar with the work
experience of their colleagues, as well as help acquaint new entrants to the profession with the rules,
difficulties and dilemmas associated with this work. The author classifies and defines three types
of published texts: those written in an instructional form, those which approach the conventions
of an informative article, and finally, copyright protected publications. An analysis of these texts
leads to a conclusion that the primary aims of the publication have led its authors to focus attention on perceptions and the practical dimensions of the knowledge being shared. They use detailed descriptions,
and have gradually abandoned ready solutions, encouraging readers instead to consider
a range of possibilities; they also illustrate their suggestions with examples from personal experience.
They do not fail to provide enlightening recollections of their own mistakes or detail the difficult
beginnings of their own careers. The role models presented demand from the reader an ability
to synthesize various elements. The original structure of the publication as well as its thoughtful and
recollection-driven approach to the subject helps to achieve this. An awareness of the technical nature
of texts urges experienced journalists to explain in plain terms the ins and outs of the profession
by presenting specific events, making comparisons, and offering brief advice or warnings. This also
relates to the language of expression they use, which makes even the official and hackneyed style of
instructional discourse easy to understand.
Exploring the Micro-nutritional and Anti-nutritional Aspects of Azolla for its Application as Functional Food Ingredient
Authors: Chandrababu K. Anokhi , Parvathy U. , Meenu B. , Binsi P.K.
Published: February 2024

Background: Aquatic plants are unexploited sources of bioactive and functional compounds having the potential as food ingredients for developing novel functional food and nutraceutical products. Azolla, an aquatic fern, is an excellent source of nutrients and secondary metabolites and hence finds application possibilities in the human diet. The goal of the current investigation was to expore the micronutrients as well as identify certain anti-nutritional elements in the water fern Azolla. Methods: In two species of Azolla viz., Azolla pinnata and Azolla caroliniana; the micro and anti-nutritional factors were determined using standard laboratory methods. Result: The findings demonstrated that both species of Azolla contained hydrocyanide, phytic acid, oxalate, tannin and saponin, all of which were below the critical level. Comparatively, saponin was found to be in the highest concentration of 9.13±0.012% and 7.52±0.031% and hydrocyanide was the lowest with the content of 0.0045±0.0004% and 0.0036±0.0002% for A. pinnata and A. caroliniana, respectively. Azolla caroliniana, however, outperformed Azolla pinnata in total caroteniod concentration, demonstrating its superior cardio-protective and anti-cancerous properties. Results indicated Azolla pinnata species to be more suitable for fortification as it contained lower anti-nutrients and was high in chlorophyll content when compared to the counterpart.
Prevalence and Antibiogram of Clostridium perfringens in Small Ruminants of District Kalat, Balochistan
Authors: Hakeem Abdul , Kamboh Asghar Ali , Matar Abdulkareem Mohammed , Ahmad Sibtain , Ahmad Shahbaz , Kumar Vijay , Taj Imran
Published: February 2024

Background: Among life-threatening infections of small ruminants (sheep/goat), enterotoxaemia has vital importance. This disease is caused by certain serotype of Clostridium perfringens and commonly known as pulpy kidney or overeating infection. The current study was carried out to determine the prevalence of C. perfringens in small ruminants in different zones (Kalat, Mangochar, Johan, and Gazg) of district Kalat, Balochistan. Methods: Fecal samples (n=100) were collected aseptically, from rectum of enterotoxaemia suspected animals. The samples were cultured in Reinforced Clostridial Media (RCM). Biochemically identified isolates were further confirmed through polymerase chain reaction (PCR). Result: Overall prevalence of C. perfringens was noticed 48%, with higher occurrence rate (p less than 0.01) in sheep (60%) than goat (36%). Among fifty samples of each specie, 30 and 18 isolates recovered from sheep and goat respectively. The area wise analysis showed that, in goats, the highest prevalence was found in Kalat (50%) followed by the Mangochar (38.46%), Johan (30.77%) and Gazg (25%). The statistical analysis revealed the significant differences (p less than 0.05; 95% confidence interval (CI) 18.80-68.91) in C. perfringens prevalence in various areas of Kalat district. The results of the gender-wise prevalence of C. perfringens exhibited a numerically higher (p greater than 0.05; 95% CI 9.23-49.02) prevalence in female goats (40%) than male goats (32%). Whereas, the age-wise analysis indicated that, in less than 1 year age group (44.44%), the prevalence of C. perfringens was higher (p less than 0.05; 95% CI 8.00-57.89) than greater than 1 but less than 2 years (29.41%) and ³ 2-year (33.33%) age groups. Similarly, in sheep, the highest prevalence (p less than 0.05) was found in Kalat (76.92%) followed by Mangochar (66.67%), Johan (58.33%) and Gazg (38.46%). The age wise and gender-wise differences (p less than 0.05) were also observed in various age and gender groups of sheep similar to goat. Among 30 sheep isolates of C. perfringens, a highest number (28 isolates) showed resistance against amikacin, followed by amoxicillin/penicillin (25 isolates) and colistin sulphate (22 isolates); while among 18 isolates of goat 17 were found resistant against colistin sulphate and 16 were resistant against amoxicillin and amikacin. In conclusion enterotoxaemia is prevailing in small ruminants of district Kalat, Balochistan thus mass scale vaccination campaign should be carried out to prevent losses.
Perceptions of Turkey and Germany’s young adults regarding the phenomenon of old age
Authors: Yildirim Gulsah , Kagnici Dilek Yelda
Published: February 2024

This study aims to examine young adults’ perceptions of aging through intercultural research. The participants of the study were 100 young adults living in Türkiye and Germany. In the study, the perceptions of the participants about aging were evaluated through metaphors, and the data was analyzed by content analysis. According to the results age was perceived as a process of physical change, illness, and health problems; experience, wise and respectable features; a process that continues to develop and learn; waiting for death, at the stage of death by participants living in Germany. For participants living in Türkiye old age was perceived as in need of care, weakness, and attention and that individuals are inadequate; with experience, wise and respectable features; childlike, emotional and fragile features, pessimistic, rigid, and prejudiced; waiting for death. The results of this study are presented and future directions are discussed in detail.
Keywords: Germany; metaphors; old age; Turkey
Estudio de caso: experiencia de estudiantes en formación inicial docente en simulaciones de prácticas pedagógicas en un mundo virtual
Authors: Badilla-Quintana María Graciela , Sandoval-Henríquez Francisco Javier
Published: February 2024

Las tecnologías inmersivas brindan una oportunidad única para que los estudiantes en Formación Inicial Docente (FID) enriquezcan su proceso formativo, ampliando las alternativas de práctica docente más allá del ámbito presencial en los centros educativos. El propósito de este estudio fue explorar la experiencia de los estudiantes en FID en simulaciones de prácticas pedagógicas en un Mundo Virtual (MV). Utilizando un método de estudio de caso, se diseñó una intervención educativa basada en retos de simulación de prácticas en un entorno de código abierto que representa una escuela. El estudio involucró a nueve estudiantes inscritos en programas de pedagogía en una universidad de la región del Biobío, Chile. A lo largo del estudio, los estudiantes se enfrentaron a seis retos con niveles de complejidad ascendente, utilizando la técnica de juego de rol. Durante estos retos, demostraron competencias pedagógicas y tecnológicas para la enseñanza en su disciplina, alineadas con los objetivos del currículo nacional. Para recopilar datos, se empleó una bitácora en la cual los participantes registraban sus fortalezas y debilidades tras cada reto. Mediante un análisis temático de estos registros, los resultados destacan el valor tanto pedagógico como tecnológico de las simulaciones en el entorno virtual. Se concluye que las simulaciones de prácticas pedagógicas en un MV pueden enriquecer la formación de futuros docentes, al ofrecer una plataforma que integra eficazmente la pedagogía y la tecnología.
Expériences pédagogiques et conception de fables dans la formation de futurs enseignants
Authors: Pachón Achury Vitalia
Published: February 2024

Cet article décrit les étapes de création des fables par des apprenants futurs enseignants du FLE en Colombie, partant de l'observation des situations scolaires pendant les périodes de leurs stages pédagogiques. La méthodologie suivie porte sur l’analyse d’un corpus de vingt-deux textes créés. Elle nous a permis d’aboutir à l’identification des problématiques les plus remarquées dans les salles de classe et leur enchainement au processus d’écriture tenant en compte des caractéristiques du genre littéraire-fable. Ainsi, cette étude contribue à résoudre, de manière explicite, le manque de matériel de lecture locale en langue française, et de façon implicite, le traitement des difficultés découvertes dans les relations interpersonnelles de l’enfance dans les cours de FLE. On conclut que l’écriture créative des textes littéraires de la part de futurs enseignants en la langue étrangère cible, véhicule la transformation des enseignants, emprunteurs des manuels didactiques importés, pour devenir ces professeurs qui réfléchissent leur contexte national.
Filtrasi dan Aerasi Mengurangi Kerusakan secara Histopatologipada Organ Insang Ikan Nila Merah (Oreochromis niloticus)
Authors: Djaelani Muhammad Anwar , Sunarno Sunarno , Nur Handyka Muhammad Ammar , Kasiyati Kasiyati
Published: February 2024

Penggunaan filter dan aerator dalam budidaya perikanan mempunyai peran penting dalam mengendalikan kualitas air, terutama kadar amonia agar tidak melebihi ambang batas. Senyawa amonia dengan kadar yang tinggi dalam air pada wadah pemeliharaan dapat menyebabkan kerusakan pada struktur dan fungsi organ insang. Penelitian ini bertujuan untuk menganalisis pengaruh filtrasi dan aerasi yang berbeda terhadap histopatologi organ insang ikan nila merah (O. niloticus). Penelitian ini menggunakan Rancangan Acak Lengkap (RAL). Variabel yang diamati adalah bobot total insang, bobot tubuh ikan, bobot insang relatif dan persentase kerusakan jaringan insang. Bobot insang relatif dihitung menggunakan rumus, BIR (%)= Bi x Bt-1 x 100%. Kerusakan jaringan insang dihitung dari pengamatan 240 lamela sekunder per insang dengan menggunakan mikroskop perbesaran 400 kali, kemudian dikalikan dengan 100%. Data yang diperoleh dianalisis mengunakan uji sidik ragam dua arahdengan taraf kepercayaan sebesar 95%. Hasil analisis menunjukkan terdapat beda nyata terhadap variabel yang diamati antar perlakuan dengan kontrol (P<0,05) terhadap bobot total insang, bobot tubuh ikan, bobot insang relatif dan persentase kerusakan jaringan insang. Simpulan penelitian ini adalah, penambahan aerasi yang dikombinasi dengan filtrasi dapat mereduksi amonia dan mengurangi kerusakan jaringan organ insang ikan nila merah.
De estudiante a docente
Authors: Procópio Leandra Fernandes , Procópio Marcos Vinicios Rabelo , Fernández-Cézar Raquel
Published: February 2024

Este ensayo pretende traer una discusión filosófica sobre la importancia de desarrollar en los estudiantes una identidad docente desde los primeros años de la formación inicial del profesorado, dando importancia a la trayectoria previa que traen desde su experiencia como estudiantes en las diferentes etapas educativas. También hace una defensa por la ampliación de los momentos y espacios de reflexión crítica dentro de la universidad a fin de que los estudiantes aprendan desde el inicio de su formación a realizar reflexiones teórico-prácticas que les ayuden en el proceso de formación de la identidad docente. Para que esto suceda, se propone la creación de espacios o de redes de aprendizaje donde los docentes tanto de educación superior como del contexto escolar puedan, junto con el alumnado, compartir experiencias y reflexiones que contribuyan a una mejora general en el aprendizaje de los estudiantes, así como para mejorar la calidad de la educación que ofrecen las universidades y las escuelas. Se argumenta que solo a través del proceso de reflexión-acción los espacios educativos pueden transformarse en verdaderos espacios de aprendizaje, de práctica social y de formación de docentes críticos, inclusivos, reflexivos y preparados para las nuevas demandas del siglo XXI.
Competition and competitive power of enterprises in 2022-2023
Authors: Egorov A.
Published: February 2024

The article presents the results of the survey about competitiveness held by the REB among the Russian industrial managers, who assessed the level of competitiveness of their production and level of intensity of competition; evaluate the markets where their production is competitive; estimate the factors negatively affecting competitiveness both on the side of enterprises and on the side of economic policy of the state. The article examines the role of the state in increasing competitiveness, as well as the degree of impact of sanctions and coronavirus on competitiveness. The data are presented for entire 24-year period of surveys on competitiveness and the results of 2022-2023 are analyzed.
KLASIFIKASI BERITA HOAX TERKAIT PEMILIHAN UMUM PRESIDEN REPUBLIK INDONESIA TAHUN 2024 MENGGUNAKAN NAÏVE BAYES DAN SVM
Authors: Imran Bahtiar , Karim Muh Nasirudin , Ningsih Nur Isna
Published: February 2024

Pemilihan Umum Presiden di Indonesia merupakan salah satu peristiwa penting dalam kehidupan berpolitik negara. Peristiwa ini selalu mendapat perhatian publik yang besar dari segenap masyarakat. Seperti pada era digital ini, akses berita sangat mudah diakses oleh setiap orang, dan hal ini pula dimanfaatkan oleh beberapa oknum tak bertanggung jawab guna mendapat keuntungan bagi diri sendiri, kelompok, maupun golongan tertentu dengan cara menyebarkan berita hoax mengenai isu pilpres di Indonesia. Karenanya, penelitian ini bertujuan mengimplementasikan metode klasifikasi berita hoaks terkait Pilpres 2024 menggunakan algoritma Naive Bayes serta Support Vector Machine (SVM). Evaluasi dilakukan dengan membandingkan kinerja kedua algoritma dalam hal akurasi, presisi, recall, serta F1-score. Hasil menunjukkan bahwa Naive Bayes mencapai akurasi sebesar 97% dengan presisi 94%, recall 100%, dan F1-score 97%. Sementara itu, SVM memiliki akurasi 95%, presisi 94%, recall 97%, serta F1-score 95%. Kesimpulan didapatkan bahwa kedua algoritma memiliki kinerja yang layak dalam klasifikasi berita hoax non hoax pemilihan umum presiden di Indonesia tahun 2024.
Comparative studies of the mountain Kinnekulle vegetation
Authors: Voinova Marina , Lönn Benny
Published: February 2024

In the present paper, we report the results of environmental monitoring of the mountain Kinnekulle habitat area (Västra Götaland county, Sweden) and discuss its nature conservation value. As part of our comparative study of Kinnekulle’s flora, between 2018 and 2023 we have studied population dynamics of plants growing there. In the present study, we compare our plant inventory results and those provided by Carl Linnaeus in his book “Västgöta Resa År 1746” (“The trip to Västra Götaland, 1746”), providing evidence that most of the plants listed by Linnaeus can still be found in the Kinnekulle area (58–94% occurrence). A part of the paper is a historical tribute to Carl Linnaeus and his trip to the Kinnekulle area. An English translation of Linnaeus’ text on Kinnekulle’s nature and plant inventory list can be found in the supplement materials of the paper.
Defining a Metacolor Space Representation to Perform Image Segmentation
Authors: Castiello Ciro , Del Buono Nicoletta , Esposito Flavia
Published: February 2024

In this paper, we use a machine learning method, known as Nonnegative Matrix Factorization, to extract from a given image some new information obtained from a number of color space representations. Such kind of information, termed ``metacolor'', can be considered as a particular color space representation of the image, which can be used to obtain a binary segmentation of the investigated image by distinguishing foreground and background pixels. Some numerical experiments prove that the proposed method shows improved results when compared with common simpler thresholding algorithms.
Environmental DNA: Enhancing Species Detection and Study Comparability with Synthetic DNA Tracers
Authors: Stamatoyannopoulos George , Papayannopoulou Thalia
Published: February 2024

Environmental DNA (eDNA) sampling has emerged as a powerful approach for monitoring biodiversity in the context of diverse terrestrial and aquatic ecosystems, and has broad potential for both environmental surveys and species management. eDNA studies focusing on plant and animal species have capitalized on analytical methodologies developed originally for metagenomic studies of microorganisms, and on technological improvements in sample collection. However, while eDNA studies have proliferated rapidly, efforts to standardize sampling and analytical methods are still nascent. Critically, fundamental data concerning the distribution and persistence of eDNA in different ecological contexts are lacking, complicating both confidence in species detection and comparability between studies. We propose that key deficits could be addressed by using well-designed synthetic DNA standards or tracers, which are widely used in fields ranging from medical diagnostics to hydrology. In-field application of a standardized mixture of barcoded synthetic DNA fragments of varying lengths and concentrations that are recovered concommitantly with eDNA sampling should provide critical yet missing data on environmental DNA distribution and turnover, as well as an internal molecular standard to enhance both species detection and comparability between eDNA studies.
Development and Physicochemical Characterization of Edible Chitosan-Casein Hydrogel Membranes for Potential Use in Food Packaging
Authors: Karydis-Messinis Andreas , Kyriakaki Christina , Triantafyllou Eleni , Tsirka Kyriaki , Gioti Christina , Gkikas Dimitris , Nesseris Konstantinos , Exarchos Dimitrios A. , Farmaki Spyridoula , Matikas Theodore E. , Giannakas Aris E. , Salmas Constantinos E. , Moschovas Dimitrios , Avgeropoulos Apostolos
Published: February 2024

The increasing global concern over plastic waste and its environmental impact has led to a growing interest in the development of sustainable packaging alternatives. This study focuses on the innovative use of expired dairy products as a potential resource for producing edible packaging materials. Expired dairy products, which are typically discarded, contribute to food waste and environmental pollution. By modifying these products to packaging materials, a dual-purpose solution addressing both waste reduction and sustainable packaging is evaluated. Expired milk and yogurt were selected as the primary raw materials due to their protein and carbohydrate content. The extracted casein was combined with various concentrations of chitosan while in some cases glycerol was used. The materials were characterized with attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy and X-ray analysis (XRD) to examine the interactions between the components of the formed binary blend. Scanning electron microscopy (SEM) was used to evaluate the surface morphology of the blends, while dynamic mechanical analysis (DMA) and tensile experiments were conducted to study the thermomechanical properties of the materials. Barrier properties, including water vapor transmission (WVTR) and oxygen permeability (OTR), were measured to assess the materials' potential to preserve food freshness. The findings reveal that expired dairy-based edible packaging materials exhibit promising mechanical properties, comparable to conventional plastic packaging. The barrier properties and especially the zero oxygen permeability of the membranes, indicate that these materials have the potential to effectively protect food products from external factors that could compromise quality and shelf life. The materials show encouraging signs of eco-friendliness, with a notable reduction in environmental persistence compared to conventional plastic packaging.
An ETD Method for Vulnerable American Options
Authors: Company Rafael , Egorova Vera N. , Jódar Lucas
Published: February 2024

This paper introduces the exponential time differencing (ETD) technique as a numerical method to solve efficiently American vulnerable options pricing. We address several challenges, including removing cross-derivative terms through appropriate transformations, treating early-exercise opportunities using the penalty method, and substituting fixed boundary conditions with corresponding one-sided finite differences. The proposed method is shown to be both accurate and efficient through numerical experiments, which also compare the results with existing methods and analyse the numerical stability and convergence rate.
A Composite Tool for Forecasting El-Nino. The Case of the 2023–2024 Event
Authors: Varotsos Costas , Sarlis Nicholas V. , Mazei Yuri , Saldaev Damir , Efstathiou Maria
Published: February 2024

Remotely sensed data play a crucial role in monitoring the El-Niño/La-Niña Southern Oscillation (ENSO), which is an oceanic-atmospheric phenomenon occurring quasi-periodically with several impacts worldwide, such as specific biological and global climate responses. Since 1980, Earth has witnessed three strong ENSO events (1982–1983, This study aims, 2015-2016). In September 2022, La-Niña entered its third year and was unlikely to continue through 2023. Instead, since 2022 forecasts pointed to a transition from La-Nina to a Neutral phase in summer or late 2023. The onset of the El-Niño occurred around April 2023, and it is anticipated by sophisticated models to be a strong event through the Northern Hemisphere winter (December 2023 - February 2024). The aim of this study is to demonstrate the ability of the combination of two new methods to improve the accuracy of the above claim because El-Niño apart from climate anomalies, significantly impacts Earth’s ecosystems and human societies, regulating the spread of diseases by insects (e.g., malaria and dengue fever), and influencing nutrients, phytoplankton biomass, and primary productivity. This is done by exploring first the previous major El-Niño events in the period January 1876-July 2023. Our calculations show that the ongoing 2023-2024 El-Niño will not be the strongest.