bluuebunny/crossref_metadata_2025 huggingface dataset:
Development of a New Correlation for Predicting Initial Water Saturation in Carbonate Reservoirs
Authors: E Edusah
Published: April 2024

The Middle East, rich in oil and gas within carbonate rocks, accounts for a significant portion of global reserves, drawing extensive exploration by major oil firms. Unlike Southeast Asia's fracture and cavity-dominated carbonate reservoirs, the Middle East features thick-bedded, pore-structured reservoirs with vast reserves. These complex and varied pore structures cause reservoir inhomogeneity, challenging the technical evaluation of these unconventional reservoirs. Characterization of carbonate reservoirs differs in terms of their mineralogical compositions and heterogenous pore systems from that of clastic reservoirs. Reservoir characterization seeks to build geological and petrophysical models for reservoir simulation. Rock types represent the most crucial characteristics of reservoirs for specialized facies modelling within specific ranges of porosity and permeability. Rock typing is an essential method routinely used by petroleum engineers for characterizing and predicting the reservoir quality of carbonate reservoirs by classifying reservoir rocks into distinct units based on similar petrophysical properties. It is imperative to predict these reservoir properties accurately and precisely. The J-function technique is considered the most effective rock typing procedure. In this study, a new correlation for predicting initial water saturation (Swi) for a reservoir producing from a Permian carbonate formation, located in the Arabian Peninsula, has been developed. The new empirical equation is an augmented Lucia model that utilizes capillary pressure (P�), porosity (), and permeability (k), as independent variables. The coefficient of multiple R2 , the student’s t and F-tests p-value were used in the model evaluation. R2 for the new model was about 0.92, t-test and F-test p-values were much lower than 0.05, indicating that the independent variables are significant. The model was also tested against an independent data set and yielded an R2 of 0.88. Likewise, the new correlation was compared to Lucia’s model and showed better results. The goal of the study is to use the developed correlation in the geostatistical modeling of connate water saturation for analogous formations in the region.
Heart Rate and Body Temperature Tracking Application Based on Fuzzy Logic
Authors: Nur Aziz Thohari Afandi , Wahyu Wibowo Angga , Karima Aisyatul , Hestiningsih Idhawati , Santoso Kuwat , Abdollah Faizal
Published: April 2024

Temperature and heart rate are indicators of health. It is necessary to monitor heart rate and body temperature to prevent the spread of a virus or disease. In most cases, heart rate and body temperature are monitored independently, and the patient cannot view a record of previous examinations. This study uses fuzzy logic to develop an application for monitoring heart rate and body temperature. It can monitor heart rate and body temperature in real-time, store a history of previous examinations, and use fuzzy logic to diagnose body conditions based on heart rate and body temperature data. Based on test results, the sensor reading error rate for heart rate is minimal at 0.68 and for body temperature at 0.18. The accuracy of fuzzy diagnosis of the patient's body condition is one hundred percent. The performance indicator for the application is excellent, the completion rate is 100 percent, and the time-based efficiency is 93%. The results of the user satisfaction test indicate that most users are pleased with the application's usability. The average value for measuring user satisfaction is 80%, with the highest result of the five measurement criteria being 89.6% for the ease-of-use criterion.
Academic Factors Influencing Students Career Choices in the IT Field: Insights from South African IT Students
Authors: Ndovela Sithembile , Mutanga Bethel
Published: April 2024

Effective career decision-making is pivotal for students, influencing their prospects and employability. This study delves into the nuanced relationship between academic factors and career choices among Information Technology (IT) students. While existing literature acknowledges the broad impact of academic performance on career decisions, limited research explores this dynamic within the context of South African universities. This research employs a comprehensive mixed-methods approach, examining the influence of educational experience, mentorship, access to resources, and institutional support on students' academic performance and subsequent career choices. Through statistical analysis and qualitative interviews, the study unveils unique insights into the interconnected effects of these factors on IT career pursuits. The findings bear significance for educators, career counselors, policymakers, and industry stakeholders. By understanding the multifaceted elements shaping academic performance and career decisions, institutions can tailor support programs, refine curricula, and nurture holistic student development. Employers stand to gain insights into the attributes of high-performing individuals, aiding talent management and recruitment. For IT students, this research provides a profound exploration of the intricate links between academic performance, career choices, and outcomes, contributing to the broader discourse on workforce development and the future of the IT sector.
Business Process Reengineering to Improve Supply Chain Management at Batik Semarang 16 Through Implementation of ERP Odoo
Authors: Bayu Setyo Nugroho  , Sri Marhaeni Salsiyah  , Sugiyanta  , Anandike Cita Kumala  , Idha Rizqi Pratiwi  , Ranira Salma Edza Fabillah  , Arumsari Vita
Published: April 2024

This study aims to design an improvement in the Supply Chain Management using the ERP Odoo application. This research starts from conducting field studies on the research object, designing the required system, prototyping, testing, and implementation. The methodology used is RND Borg and Gall Method approach to reach the right model in making business models for reengineering ERP implementation in small and medium enterprises. As a result, the business processes create using Odoo, is way more efficient because all business activities can be integrated with each other so that there is an automation of changing the working status of the product so there is no need to check manually. Finally, testing has been done to see how well the system is.
The Form of Presentation of Ngadu Tanduk Dance in Siulak Panjang Village, Siulak District, Kerinci Regency, Jambi
Authors: Afrilia Eza , Asriati Afifah
Published: April 2024

This article aims to analyze the presentation of the Ngadu Horn Dance in Siulak Panjang Village, Siulak District, Kerinci District, Jambi. The type of research used in this study is qualitative research with descriptive methods. The research instrument used in this study was the researcher himself who was assisted by supporting instruments such as stationery, cameras and flash drives. Data collection techniques were carried out by means of literature study, observation, interviews and documentation. Stages of data analysis in the form of data collection, data reduction, data presentation and concluding data. Based on the results of the study, it can be concluded that the presentation of the Ngadu Tanduk Dance in Siulak Panjang Village, Siulak District, Kerinci Regency, Jambi, was held at a wedding reception. This dance is presented to welcome the bride and groom. The form of presentation of the motion includes Representational. The movements consist of worshiping movements, buffalo movements looking for opponents and horn horning movements. The Ngadu Tanduk dance is danced by 2 men, wearing black and gold clothes, Teluk Belango clothes, trousers, songket, belts and laca. The musical instruments used are Dap (tambourine), gong, gong reed, and nyaro (vocals). The presentation of the Ngadu Horn Dance uses a horn property made of bamboo slats measuring about 2 meters which resembles a buffalo horn with a framework wrapped in black, red, yellow and white cloth. The presentation of the Ngadu Tanduk Dance is carried out in an open courtyard with the dancers facing the bride and groom.
Hard Coal as a Necessary Energy Resource in Poland
Authors: Strzałkowski Piotr , Maruszczyk Marek
Published: April 2024

The geopolitical situation in Europe has changed dramatically due to the war waged by the Russian Federation in Ukraine. This makes it necessary to become independent from supplies of mineral resources, especially energy from Russia. According to the authors, ensuring Poland’s energy security will require a longer use of coal as the primary energy resource than initially expected. The expected increase in energy demand may cause a negative energy balance in the country. Renewable energy sources dependent on weather conditions cannot with certainty ensure energy security. On the other hand, nuclear requires large financial outlays and a longer time for reactors’ construction. In addition, it has other disadvantages (the problem of waste, environmental impact in the event of a malfunction and the need to import uranium). In these circumstances, coal may be a raw material that meets the economic needs and ensures the energy security of the country.
Application of continuous wavelet transform and convolutional neural networks in fault diagnosis of PMSM stator windings
Authors: Pietrzak P. , Wolkiewicz M.
Published: April 2024

Efficiency, reliability, and durability play a key role in modern drive systems in line with the Industry 4.0 paradigm and the sustainability trend. To ensure this, highly efficient motors and appropriate systems must be deployed to monitor their condition and diagnose faults during the operation. For these reasons, in recent years, more and more research has been focused on developing new methods for fault diagnosis of permanent magnet synchronous motors (PMSMs). This paper proposes a novel hybrid method for the automatic detection and classification of PMSM stator winding faults based on combining the continuous wavelet transform (CWT) analysis of the negative sequence component of the stator phase currents with a convolutional neural network (CNN). CWT scalogram images are used as the inputs of the CNN-based interturn short circuits fault classifier model. Experimental tests were carried out to verify the effectiveness of the proposed approach under various motor operating conditions and at an incipient stage of fault propagation. In addition, the effects of the input image format, CNN structure, and training process parameters on model accuracy and classification effectiveness were investigated. The results of the experimental tests confirmed the high effectiveness of fault detection (99.4%) and classification (97.5%), as well as other important advantages of the developed method.
Automatic test-bench for SiC power devices using LabVIEW
Authors: Leuchter Jan , Pham Ngoc Nam , Nguyen Huy Hoang
Published: April 2024

This paper is devoted to the improvement existing models of electronics devices, which are used in powers electronics as switching devices, and investigate a LabVIEW-based automatic test-bench for Silicon carbide (SiC) power devices. In recent years, power electronic devices are required to be capable handle with higher voltage, leads to development of new generation of power electronic devices, such as SiC devices. However, using a simulation platform, such as Spice, to diminish the complexity of power electronic design with these new devices is hindered by the lack of precise models. The proposed test-bench enables not only measuring static characteristics of SiC power devices, but also extracting key parameters required by simulations. These extracted parameters are then employed in the existing device model, and the simulation results which are based on the model with original parameters and models with extracted parameters are compared with measured results. The comparison clearly demonstrates that parameters obtained from the proposed test-bench significantly enhance the Spice model.
Object classification with aggregating multiple spatial views using a machine-learning approach
Authors: Grác Šimon , Beňo Peter , Duchoň František , Malý Michal , Dekan Martin
Published: April 2024

The article proposes a solution for object classification using multiple views generated from 3D data rendering and convolutional neural networks. For presentation purposes and easier verification of the solution, an application was developed to create views of 3D objects, classify them using the selected CNN, and evaluate the performance of the CNN. The evaluation is based on metrics and characteristics described in the article. Seven testing objects were used to verify the proposed solution; five CNNs were tested for each.
Internet/Video Gaming: The Relevance of a New Phenomenon in the Youth
Authors: Pop-Jordanova Nada
Published: April 2024

The high level of technological growth in contemporary society, beside benefits, provokes different kinds of damages, especially among the worldwide youth population. World statistics have recognized that video and internet game addiction is a growing problem. In this context, it is supposed that 0.3 to 1.0 percent of the general population might be qualified as a potential sufferer of internet gaming disorder. However, youth between 18-34 years are the highest risk population.

New research has shown the need of early identification of at-risk young people for internet addiction. Adverse experience in children of different forms of stress, negative life circumstances and especially negative, hostile parenting can lead to depression, social and cultural problems, together with significant boredom and loneliness levels. These are all confirmed to be related with addictive behaviour.

Some neural correlates are discussed as the possible background of game addiction. Finally, therapeutic possibilities are presented.
Assessment of the Water Quality and the Phytoplanktonic Community of Lago das Rosas Located in Goiânia, Goiás
Authors: Faria Débora de Sousa , Hoffmann Nora Katia Saavedra del Aguila
Published: April 2024

Objective: The objective of this study was to evaluate the physical-chemical and microbiological parameters of the water from Lago das Rosas, as well as to qualitatively evaluate the phytoplankton community during periods of drought and rain, with the aim of determining the water quality of the ecosystem.
 
Theoretical Framework: The association of physical-chemical and microbiological analyzes with bioindicators contributes to an holistic view regarding the understanding of the environmental quality of the ecosystem. And among the main bioindicator organisms are phytoplankton, microscopic, photosynthetic organisms that respond quickly to environmental changes.
 
Method: The methodology adopted for this research comprises the analysis of physical-chemical and microbiological variables, as well as the qualitative assessment of the phytoplankton community, carried out through microscopic analyzes and assistance from the literature.
 
Results and Discussion: The results obtained revealed that in the dry and rainy periods, the Lake did not present eutrophication conditions, however, an increase in organic load was detected in the rainy period. Variation that directly influences the composition of the phytoplankton community existing in the ecosystem. The dominance of the Chlorophyceae class and the existence of cyanobacteria that produce toxins that are harmful to health were identified, such as Lyngbya, Planktothrix and Aphanocapsa.
 
Research Implications: The results presented are an important tool for control and monitoring and can assist bodies responsible for managing urban lakes.
 
Originality/Value: This study contributes to the literature, given the need for more up-to-date data and research regarding water quality and monitoring of the phytoplankton community in urban lakes in Goiânia.
Beyond STP Marketing Strategy for Online Service Businesses
Authors: Nilplengsang Yongyoot , Pankham Sumaman
Published: April 2024

Purpose: This research presents the new marketing strategy concept with the customization strategy as the specific consumer satisfied to be in line with the online service business.
 
Theoretical Framework: The researcher studied the elements of marketing strategies for online service businesses. The strategy development process is divided into 4 components as segmentation, targeting, positioning and customization.
 
Design/methodology/approach: In this research, the researcher uses mixed-methods as qualitative research that analyzed the consensus with fuzzy logic techniques, and quantitative research.
 
Findings: The research result brings about a new marketing strategy that is going to be a guideline for online service business entrepreneurs, which is comprised of the following market strategy: “segmentation, targeting, positioning, and customization strategy as the specific consumer satisfied”.
 
Practical implications: The objective of the study is to find consensus among experts using fuzzy logic and develop market strategies through segmentation, targeting, positioning, and customization strategies to the specific consumer satisfied. In this research, mixed-methods research, among other things, qualitative research was used with 19 experts with in-depth interviews, which analyzed the consensus with fuzzy logic techniques, and quantitative research was used with 983 online service business entrepreneurs.
 
Originality/value: The research result brings about a new marketing strategy that is going to be a guideline for online service business entrepreneurs, which is comprised of the following market strategy as “segmentation, targeting, positioning, and customization strategy as the specific consumer satisfied”. The obvious thing is that marketing should apply these strategies in decreasing order importance, segmentation, and customization strategies involve the specific consumer needs that are inferior to their importance, plus combining with the targeting and positioning, respectively.
Socio-Environmental Management: the Importance of Environmental Audit for Organizational Sustainability
Authors: Rodrigues Karen Cristina Barreto Trovão , Marques Francisco Roldineli Varela , Mariano Wagner dos Santos , Saldanha Evanginaldo Silva , Souza Jean Patrick da Costa , Silva Jorge Alexandre Melo da , Silva Celso Cardoso , Gil Luanna mariane Pereira Ramos , Silva Carla Michelle da , Silva Gustavo Perroni Gomes da
Published: April 2024

Objective: This research sought to analyze the opportunities and challenges faced by companies in the effective implementation of socio-environmental management and in the conduct of environmental audits.
 
Methodology: The study characterized itself as exploratory, descriptive and quantitative research. The sample, composed of 52 randomly selected managers, participated in a structured questionnaire containing closed and multiple choice questions. After review and pre-test of the questionnaire, distributed in person, responses were collected anonymously, ensuring the objectivity of the results. Analyzes were conducted to understand the data, which was presented graphically to facilitate the visualization of patterns and trends.
 
Results and data analysis: The results of the research reveal that socio-environmental management is perceived as fundamental by companies, reflecting an increasing awareness about the importance of integrating sustainable practices. In addition, environmental audits are recognized as essential tools for improving the environmental performance of companies. However, the challenges faced in the effective implementation of such practices, such as the complexity of environmental legislation and the lack of financial resources, highlight the need for integrated approaches to overcome such obstacles.
 
Conclusion: Thus, investing in sustainability initiatives not only as a measure of compliance, but also as a strategy of differentiation in the market, becomes crucial to ensure the long-term viability of companies and contribute to the protection of the environment and the well-being of the affected communities.
The Role of Tangguh Development Projects in Achieving Welfare for the Papuan Community
Authors: Wamafma Filep , Mansawan Isak Samuel Kijne , Bonggoibo Alice Ance
Published: April 2024

Purpose: The purpose of the study is to determine and analyze the role of the Tangguh Development Project in realizing the welfare of the Papuan people.
 
Methods: Describe the methodology used in the study, such as data collection methods, analysis techniques, and any relevant frameworks or theories employed to assess the impact of the Tangguh Development Project on Papuan welfare. This could involve surveys, interviews, case studies, or statistical analysis.
 
Results and Discussion: Present the findings of the study regarding the role of the Tangguh Development Project in promoting the welfare of the Papuan people. Discuss the positive impacts, if any, as well as any shortcomings or challenges faced by BP Tangguh in fulfilling its commitments. Analyze the discrepancies between BP's claims and the actual conditions on the ground, particularly in the economic sector.
 
Implications of the Research: Discuss the implications of the findings for various stakeholders, including BP Tangguh, the Indonesian government, local communities in Papua, and environmental advocacy groups. Address the potential socio-economic, environmental, and political implications of the Tangguh Development Project on Papuan welfare and broader regional development.
 
Originality/Value: Highlight the original contributions of the study to the existing literature on corporate social responsibility, sustainable development, and resource extraction projects in indigenous or marginalized communities. Emphasize the value of the research in informing future policy decisions, corporate practices, and community engagement strategies aimed at promoting inclusive development and equitable distribution of benefits from resource projects like the Tangguh Development Project.
Meeting the New AACP Competencies in Genetics and Clinical Pharmacogenomics at the University of Minnesota
Authors: Brown Jacob , Sorge Lindsay A , Oetting William S , Jacobson Pamala A , Pereira Chrystian
Published: April 2024

Objective: Pharmacogenomics (PGx) is increasingly being used for creating individualized treatments for patient care. Healthcare professionals, especially pharmacists, need to understand how genetic variation impacts the efficacy and toxicity of medications. Due to the breadth and complexity of PGx-related information, it has been challenging to determine what information should be included in pharmacy curricula and how best to educate students.

Methods: The University of Minnesota College of Pharmacy recently began the process of incorporating into the curriculum expanded competencies for PGx from the American Association of Colleges of Pharmacy (AACP) Pharmacogenomics Special Interest Group (PGx-SIG). We evaluated our curriculum for PGx content, determined what was currently being taught and identified educational gaps. 

Results: A review of our Doctor of Pharmacy curriculum showed substantial PGx content, although it was inconsistently taught throughout the required courses and in some courses absent. We revised the content of existing courses incorporating content that meet most of the PGx-SIG recommended competencies. 

Conclusion: There are and will be major changes in our understanding of the influences of PGx on individualized medical treatment.  As our understanding grows, information on PGx in pharmacy curriculums will need to keep pace with these changes. We have begun this process at the University of Minnesota by doing a full review of PGx related information and making appropriate revisions in the pharmacy curriculum.
Using 15-Minute Serial Blood Pressures as an Alternative to Measuring a Single Blood Pressure
Authors: Philbrick Ann , Carlin Caroline , Harris Ila , Fallert Christopher
Published: April 2024

Thirty-minute office blood pressure (OBP-30) is an alternative to ambulatory blood pressure (BP) measurement, yet is impractical to implement. This study aimed to determine whether unattended BP readings over 15 minutes would result in a similar probability of obtaining a BP of <140/90. Sixty-seven adults self-described as having high BP were analyzed. BP was measured at baseline and every 5 minutes for 15 minutes with the initial reading compared to the average of the last three readings (OBP-15). Compared to baseline, there was a decline in both average systolic (4.2 points) and diastolic (2.8 points) BP. The probability of BP control predicted by multivariate model was 71.6% at baseline and 78.0% using OBP-15 (p=0.011). The increase in BP control from initial to OBP-15 measurement was significant for indigenous or persons of color compared to whites, and men compared to women. OBP-15 is convenient and results in lower BP readings and higher probability of BP control compared to the initial reading.
Disaggregating the Learning Outcomes of a Stock Market Simulation Project
Authors:   Gyeongin National University of Education, Hahn Jin-soo
Published: April 2024

The disaggregation and detailed examination of the learning processes’ data that form the basis and the application of the learners’ knowledge allows to obtain additional valuableinformation that would, otherwise, have been overlooked when simply analyzing the aggregated data. This study analyzes the stock and the flow of the economic and financial knowledge among 481 college students who engaged in a stock market simulation project, and further disaggregates the multiple-choice data into four learning types, based on the pattern of pre-test and post-test responses: positive learning, retained learning, zero learning, and negative learning. The difference between pre- and post-test scores is mostly contributed by positive learning, but negative learning is also present. Likewise, the post-test score can be split into retained learning and positive learning components: the larger the contribution from retained learning, the smaller the contribution from positive learning. The regression results show that males, nonfreshmen, and students with experience in stock investing have more prior economic and financial understanding of the stock market. However, after engaging in the stock market simulation project, the differences in the scores mostly disappear due to knowledge catch-up. Gender, academic year, stock investment experience, reading economic articles, and the desire to engage in real stock investments are identified as factors influencing the stock, flow, and learning types of the economic and financial knowledge. Recognizing the categories that reflect zero learning and their content elements, and then incorporating those findings into the development and modification of the economic and financial education programs can further enhance the educational outcomes.
PRÓPOLIS VERMELHA E AÇÃO ANTIFÚNGICA: POTENCIALIDADES E DESAFIOS
Authors: De Souza Victor Luan Caciatore , Oliveira Elaine Cristina Tôrres , Cavalcanti Bruno Coêlho , Magalhães Hemerson Iury Ferreira , Ferreira Paulo Michel Pinheiro , Nascimento Ticiano Gomes do , Ferreira José Roberto de Oliveira
Published: April 2024

Introdução: a própolis é uma composição resinosa produzida por abelhas e utilizada em suas colmeias contra microrganismos. Existem diversos tipos desse composto, sendo o de coloração vermelha o último espécime relatado na literatura. Assim, dentre suas aplicabilidades, a atividade antifúngica da própolis vermelha tem sido explorada com vistas a ampliar sua ação terapêutica. Objetivo: explorar estudos acerca da ação antifúngica da própolis vermelha, identificando suas potencialidades e desafios. Metodologia: foi realizada uma revisão integrativa nas bases de dados bibliográficos MEDLINE (via PubMed), SciELO e Google Acadêmico, complementada por uma diligência nas bases de ensaios clínicos ReBEC e Clinical Trials. Em seguida todos os estudos selecionados foram explorados para obtenção do cenário atual sobre o tema. Resultados: foram incluídos 08 estudos, sendo 01 deles um ensaio clínico. Os estudos comprovam a ação antifúngica da própolis vermelha, principalmente contra Candida spp. e Paracoccidioides brasiliensis, e evidenciam a maior potência fungicida deste composto em detrimento de outros tipos de própolis. Conclusão: a ação antifúngica da própolis vermelha mostra-se uma potencialidade em diversos estudos. Entretanto, o volume de pesquisas científicas relativas a esse tema é insuficiente e a complexidade desse composto configura-se como um desafio à sua aplicabilidade.
PREVALÊNCIA E FATORES ASSOCIADOS AO USO DE CIGARRO ELETRÔNICO POR ESTUDANTES UNIVERSITÁRIOS
Authors: Godói Arthur Teixeira , Oliveira Hallyssonn Cássio Mendes , Figueiredo José Felix , Rocha Lincoln Lamec Rodrigues , Silva Mariana Fernanda Pereira Martins , Borborema Vitoria Souza Revert , Fonseca Alenice Aliane , Rocha Josiane Santos Brant
Published: April 2024

Este estudo objetivou estimar a prevalência do uso do cigarro eletrônico e a associação com fatores preditores. Trata-se de um estudo transversal, analítico, com amostra probabilística de universitários matriculados em um Centro Universitário de Montes Claros, Minas Gerais, Brasil no segundo semestre de 2022. A variável dependente referiu-se ao uso do cigarro eletrônico. As variáveis independentes referiram a fatores sociodemográficas, laborais e comportamentais. A associação entre as variáveis investigadas e a prevalência do uso do CE foi verificada pela análise bivariada e a regressão de Poisson. Foram entrevistados 730 universitários, com a média de idade de anos 22,56 (±6,25). Destes, 21,8 % faziam o uso cigarro eletrônico e após a análise multivariada manteve-se associado ao desfecho não ter companheiro (RP= 3,31; IC95% 1,04-10,48), morar com amigos/sozinho (RP=1,53; IC95% 1,07-2,18), ter histórico de usuários de cigarro eletrônico na residência (RP= 1,76; IC95%: 1,17- 1,89), consumir bebida alcoólica (RP= 3,07; IC95%: 1,72-5,49) e não praticar atividade física (RP= 3,37; IC95% 2,35-4,83). Conhecer sobre o cigarro eletrônico foi fator protetor (RP= 0,31 IC95% 0,20-0,46). Registrou-se elevada prevalência do uso do cigarro eletrônico, e manteve associados a fatores sociodemográficos e comportamentais. Esses achados chamam a atenção para a necessidade de novas medidas regulatórias, a fim de reduzir o uso desse dispositivo.
Topical issues of countering modern autonomous unmanned aerial vehicles and FPV drones
Authors: Nikolaev Nikolay Vladimirovich , Il'in Vladimir Viktorovich , Nekrasov Maksim Igorevich
Published: April 2024

The high level of development of unmanned aviation has predetermined the possibility of its use to solve a wide range of tasks. At the same time, it should be noted that achievements in this area are not always used for peaceful purposes. The results of the analysis of the practice of using unmanned aerial vehicles (UAVs) in modern military conflicts and information about terrorist acts with their use allow us to conclude that the most difficult targets resistant to various methods of influence are modern autonomous UAVs and FPV drones with explosive devices. Therefore, the search for effective ways to counteract them seems to be an urgent area of research. The aim of the work is to develop the means for effective counteraction to modern autonomous UAVs and FPV drones by electromagnetic, laser and mechanical ways. The methods of system analysis are used in the work. The article notes the increasing level of threats associated with the mass use of autonomous UAVs and FPV drones, presents the results of the "revision" and critical analysis of the main methods of countering modern UAVs, reflecting their characteristics, advantages and disadvantages. Based on the results obtained, a comparative analysis of methods of countering autonomous UAVs and FPV drones was carried out. It is concluded that the most effective of them are the methods of electromagnetic, laser and mechanical action. The required parameters for the effective application of these types of impacts on modern autonomous UAVs and FPV drones are presented. The results of the research can be used as initial data for the creation of new and improvement of existing means of countering UAVs as part of physical protection systems (SFZ). The scientific novelty of the work consists in the development of a scientific and methodological apparatus for substantiating the SFZ of objects in terms of taking into account the functioning features and vulnerabilities of modern autonomous UAVs and FPV drones, as well as determining ways to improve systems to counter them based on the use of electromagnetic, laser and mechanical means.
PANDEMI COVID-19: KINERJA KEUANGAN PERUSAHAAN HEALTHCARE YANG TERDAFTAR DI BEI
Authors: Annisa Devi Barnaditya Putri  , Eko Prasetio Januar
Published: April 2024

The research aims to analyze differences in the financial performance of companies in the healthcare sector listed on the Indonesia Stock Exchange (IDX) between 2019-2022. This study compares financial performance before and when, before and after, during and after as well as before, when and after the Covid-19 pandemic. Financial performance is measured using cash ratio variables, smooth ratio, debt billing periods, fixed asset turnover, remuneration on fixed property, equity return and stock turnover. Normality test method using Shapiro-wolf test and hypothesis analysis technique using non-parametric wilcoxon signed rank test. Based on research, there are differences between financial performance before and during the pandemic, as well as before and after it. Current and post-covid financial performance as well as before, during and after the Covid-19 pandemic there are no differences.
Pengaruh Corporate Social Responsibility Terhadap Nilai Perusahaan Dengan Komite Audit Sebagai Variabel Moderasi (Studi Empiris Perusahaan Manufaktur Yang Terdaftar Di BEI Tahun 2019-2021)
Authors: Octalisa Gunawan Victoria , Paramitha Melvie
Published: April 2024

Corporate Social Responsibility merupakan bentuk tanggung jawab sosial perusahaan yang berpengaruh pada individu, masyarakat dan lingkungan. Selain itu, pengungkapan corporate social responsibility juga menjadi salah satu faktor yang mempengaruhi peningkatan nilai perusahaan dan kepercayaan investor terhadap perusahaan. Tujuan penelitian ini adalah untuk mengetahui pengaruh corporate social responsibility terhadap nilai perusahaan dan pengaruh komite audit sebagai variabel moderasi dari corporate social responsibility dan nilai perusahaan pada perusahaan manufaktur yang terdaftar di BEI tahun 2019- 2021. Hasil penelitian yang telah dilakukan corporate social responsibility berpengaruh negatif terhadap nilai perusahaan. Sedangkan variabel komite audit tidak dapat memoderasi hubungan corporate social responsibility dengan nilai perusahaan.
Tahapan Proses Produksi Dan Karakterisasi Bioplastik Dari Limbah Tongkol Jagung
Authors: Sumirat Riska , Rosalinda S. , Mardawati Efri , Nurliasari Desi , Kastaman Roni
Published: April 2024

Plastic is the dominant packaging used by the public, so it has the potential to damage the environment. It is necessary to synthesize raw materials for making plastics that are degraded by microorganisms, namely bioplastics. Bioplastics are packaging materials that are synthesized from natural raw materials so that they can be degraded in the environment. The raw material used is corncob because it is abundant and the benefits are not maximized. Research is needed to examine the stages of the production process and the characterization of bioplastics from corncob waste. The purpose of this study was to examine the stages of the production process and the characterization of bioplastics from corncob waste. This study used a laboratory experimental method with descriptive analysis. The production of bioplastics consists of the stages of making cellulose, cellulose acetate, and bioplastics using the solution casting method. The stages of cellulose isolation include hydrolysis, delignification, pulping, and bleaching, which showed an increase in cellulose content from 32.14% to 79.36%. Cellulose is acetylated to become cellulose acetate and has an acetyl content of 11.70 ± 0.40% with a yield of 121.16 ± 0.98%. The production of bioplastics uses a composition of cellulose acetate and chitosan at 50%:50% (w/w) successively. The resulting bioplastic has a thickness of 0.345 ± 0.024 mm, a density of 0.83 ± 0.03 g/cm3, a moisture content of 13.13%, a biodegradation value of 95.19%, a water resistance of 205.57%, and is transparent. The mechanical properties of bioplastics include a tensile strength of 22.3 N/m, an elongation of 21.11%, and a modulus of elasticity of 0.307 Mpa.
Uji Efikasi Beauveria Bassiana Untuk Pengendalian Hama Ulat Plutella Xylostella Pada Tanaman Kale (Brassica Oleracea) Var. Sabellica
Authors: Sutarman Sutarman , Assholikhah Aisyah Dirra , Prihatiningrum Andriani Eko
Published: April 2024

Penelitian ini bertujuan untuk mengetahui efektivitas Beauveria bassiana dalam mengendalikan hama Plutella xylostella. Percobaan tahap pertama dilakukan secara in vitro di Laboratorium Hama dan Penyakit UMSIDA dengan menguji kemampuan B. bassiana pada kepadatan spora 100, 103, 105, dan 107 CFU.mL-1 dalam menginaktivasi ulat P. xylostella. Uji aplikasi lapangan dilakukan pada lahan endemik hama ulat daun di Desa Seloliman, Mojokerto, Provinsi Jawa Timur, Indonesia. Percobaan disusun dalam Rancangan Acak Kelompok dengan empat perlakuan kepadatan spora B. bassiana yang diulang sebanyak empat kali. Pengamatan dilakukan terhadap intensitas serangan serta bobot basah dan bobot kering tanaman. Analisis data menggunakan ANOVA dilanjutkan dengan uji Duncan pada taraf uji 5% untuk mengetahui perbedaan antar perlakuan. Hasil penelitian menunjukkan bahwa B. bassiana efektif menonaktifkan aktivitas hingga 60,2% pada aplikasi dengan kepadatan spora 107. Aplikasi B. bassiana menurunkan intensitas serangan hama P. xylostella menjadi 63,41% dan meningkatkan bobot  basah dan bobot kering daun kale sebesar 246,0%. dan 305,8% dibandingkan tanpa aplikasi B. bassiana. Aplikasi jamur entomopatogen ini dapat menjadi solusi pengendalian hama pada lahan yang endemik serangan ulat daun.
The Formation of Water Stress Resistant Soybean Varieties From Genotypes Resulted From Genetic Mutation Between the Second Generation Mutant With High Result Potentials
Authors: Aminah Aminah , Djufry Fadjry , Edy Edy , Abdullah Abdullah , Nuraeni Nuraeni , Numba Sudirman , Palad Marliana S. , Syam Amiruddin , Sahur Asmiaty
Published: April 2024

The aim of the study was to obtain second generation mutant lines (M2) from three gene-mutated soybean seeds, namely M2 Anjasmoro, M2 Argomulyo and M2 Dena-1 which are tolerant to drought stress, water saturation stress and high yield potential. The research was carried out in the Maros district, South Sulawesi, July-November 2022, arranged in a split plot design. The main plot is the application of water consisting of three levels, namely selection of drought stress (C1), selection of water saturation stress (C2) and selection of optimum conditions (C3). Subplots are three second generation soybean seeds resulting from gene mutations (M2), namely: M2 Anjasmoro, M2 Argomulyo and M2 Dena-1. The results showed that the best plant agronomic characters for growth and production factors were M2 Anjasmoro for water saturation stress treatment and M2 Argomulyo and M2 Dena-1 for drought stress treatment. The fastest harvesting age was obtained from the combination of drought stress and M2 Argomulyo, namely 79 days and not significantly different from the combination of drought stress and M2 Dena-1, namely 79.34 days, but significantly different from the other treatment combinations. The production obtained from the seeds resulting from the second generation of gene mutations has begun to show a difference between those given the mutation treatment and their parents, where the combination of water saturation stress and M2 Anjasmoro gave the highest production of 3.20 tonnes/ha higher than the production of its parents which only reached 2. .03-2.25 tonnes/ha. Generation M2 Argomulyo seeds were the longest surviving seeds to recovery from drought stress (38 days), in the sense that M2 Argomulyo seeds were more resistant to drought stress than the other two generations of seeds, namely M2 Anjasmoro (36 days) and M2 Dena-1 (37 days). Meanwhile, the resistance to water saturation was shown by M2 Dena-1 generation seeds, namely 40.67 days, followed by M2 Argomulyo 29.67 days and M2 Anjasmoro 27.33 days.
Leukoplakia with Diverse Grades of Epithelial Dysplasia – A Case Series and Review of Literature with Updated Management Protocol
Authors: Charan K.V. Sai
Published: April 2024

Oral leukoplakia is considered the most potentially malignant disorder of the oral cavity, with a high risk of malignant transformation. Based on the clinical manifestation, it has been classified as a homogeneous and non-homogeneous variant. It has been considered predominantly a white lesion of the oral cavity that cannot be classified under any other definable lesions. Leukoplakia is a term used to describe the lesion clinically. There are various components responsible for the threatening change of oral leukoplakia. The clinical diagnosis of leukoplakia is confirmed by histopathology, which commonly indicates intense epithelial dysplasia. This manuscript describes a series of cases diagnosed clinically as leukoplakia and their grades of epithelial dysplasia, a Review of literature about etiology and the key pathogenesis behind it, risk determinants for malignant transformation, chair side investigation for epithelial dysplasia, and updated management protocol.
Comparison of Intranasal Versus Intravenous Dexmedetomidine to Attenuate Haemodynamic Response of Laryngoscopy and Endotracheal Intubation in Elective Lumbar Spine Surgery: A Randomized Controlled Study
Authors: Ankita  , Kumar Harish , Kumar Mukesh
Published: April 2024

Background:

In general anaesthesia, hemodynamic alterations during endotracheal intubation are vital concerns. The efficacy of intranasal and intravenous Dexmedetomidine (DEX) in decreasing the stress response generated by laryngoscopy and endotracheal intubation was investigated in this study.

Methods:

Seventy adults were randomised into two groups in this prospective, randomised, double-blind study: Group DIV (n=35) and Group DIN (n=35). Dexmedetomidine (DEX) infusion (0.5 μg /kg) was administered intravenously over 40 minutes to the DIV group and intranasally (1 μg /kg) to the DIN group 40 minutes before induction.

The primary outcome was to compare the mean arterial pressure (MAP) between the two groups starting 40 minutes before induction and continuing every 10 minutes until induction of anaesthesia, at the time of intubation, and then every minute afterwards until 5 minutes, 7 minutes, and 10 minutes following intubation. Comparisons of heart rate (HR), systolic (SBP) and diastolic blood pressure (DBP), sedation and any adverse effects were the secondary outcomes.

Results:

The two groups had no statistically significant difference in MAP, HR, SBP and DBP. The DIV group's preoperative sedation score before induction was significantly higher than the DIN group's (P = 0.014).

Conclusion:

This study demonstrates that dexmedetomidine administered intravenously is equally efficient as intranasal dexmedetomidine in attenuating hemodynamic response during laryngoscopy and intubation.
Effects of Azadirachta indica Leaf Aqueous Extract supplemented Fish Diets on Innate Immune Response and Disease Resistance of Tilapia (Oreochromis niloticus)
Authors: Phumkhachorn Parichat , Rattanachaikunsopon Pongsak
Published: April 2024

Pseudomonas fluorescens is an important bacterial pathogen causing economic losses in aquaculture worldwide. The adverse effects of antibiotics raise public concerns on using them in aquaculture. The objective of this study was to examine the effectiveness of aqueous extract of Azadirachta indica leaves on nonspecific immunity and disease resistance in tilapia (Oreochromis niloticus). Fish diets supplemented with aqueous extract of A. indica at the concentrations of 0% (Diet 1), 1% (Diet 2), 1.5% (Diet 3) and 2% (Diet 4) were investigated for their effects on nonspecific immune response and disease resistance in tilapia. The fish given diet 3 and diet 4 for 3 weeks had increased levels of leukocyte phagocytic activity though higher activity was observed in diet 4 group. Diet 3 and diet 4 also enhanced plasma lysozyme activity in tilapia. The similar levels of lysozyme activity were found in the fish receiving both diets for 3 weeks. Only diet 4 had stimulatory effect on respiratory burst activity in tilapia. This effect was observed 3 weeks after feeding the fish with diet 4. Throughout the experiment, no significant differences (P > 0.05) in phagocytic, lysozyme and respiratory burst activities were found between group fed with diet 1 (control) and diet 2. Following 3 weeks after feeding, fish were infected with Pseudomonas fluorescens at median lethal dose (LD50). No mortality was found in the diet 4 group while 50%, 48% and 28% of cumulative mortality were found in the fish receiving diet 1, 2 and 3 respectively. These results indicate that the aqueous extract of A. indica may elevate the nonspecific immune response and enhance disease resistance in tilapia.
Evaluating the Interactions Between Vibrational Modes and Electronic Transitions Using Frontier Orbital Derivatives
Authors: Schröder Lisa A. , Anderson Harry L. , Rončević Igor
Published: April 2024

Vibrations can significantly affect molecular properties, even at zero Kelvin. Accounting for these effects when using computational modelling is costly, as it requires many calculations at geometries distorted from equilibrium. Here, we propose a low-cost method for identifying vibrations most strongly coupled to the electronic structure, based on using orbital derivatives as a diagnostic.
Redox-Tunable Ring Expansion Enabled By A Single-Component Electrophilic Nitrogen Atom Synthon
Authors: Kelly Patrick , Keramati Nikki , Kaplin Kate , Lynch-Colameta Tessa , Phelan James , Levin Mark
Published: April 2024

Controllable installation of a single nitrogen atom is central to many major goals in skeletal editing, with progress often gated by the availability of an appropriate N-atom source. Here we introduce a novel reagent, termed DNIBX, based on dibenzoazabicycloheptadiene (dbabh), which allows the electrophilic installation of dbabh to organic substrates. When indanone β-ketoesters are aminated by DNIBX, the resulting products undergo divergent ring expansions depending on the mode of activation, producing heterocycles in differing oxidation states under thermal and photochemical conditions. The mechanism of each transformation is discussed, and the different reactivity modes of the indanone-dbabh adducts are compared to other nitrogenous precursors.