Abstract

Abstract. An abstract of about 250-300 words should be presented immediately preceding the text. The abstract should concisely inform the reader of the manuscript’s topic, its methods, and its findings.

Improving network security using keyboard dynamics: A comparative study

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Ugwunna, C.O., Chukwuogo, O.E., Alabi, O.A.1, Kareem, M.K., Belonwu, T.S., Oloyede, S.O.
Corresponding email: [email protected]

A B S T R A C T

Duplication or imitation of individual keystroke rhymes is very difficult which can make it very efficient to be used for identity authentication. Over time, it is possible that the keystroke style of an individual to be learned by following keystroke information obtained when the person types text. The user’s identity can always be verified by studying the user’s keyboard input styles anytime the user uses the keyboard. The technique suggested in this study uses the keystrokes that users make while typing to verify their identities. To provide an accurate verification of whether a user is authentic or fraudulent, a model that integrates machine learning and dynamic keystroke models—Decision Tree, Random Forest, Support Vector Machine, and K-nearest Neighbors—is compared and utilized. The keystroke dynamics dataset was gathered from Kaggle and consists of 51 subjects’ keyboard dynamics data, which was collected over the course of eight sessions and six months. There are 20400 samples in all in the data. This study assessed the effectiveness of machine learning algorithms with a focus on the keystroke dynamic authentication system. Python is used for the development work, while Jupyter notebook is used as the IDE. The performance of the models for different variables is assessed using the following metrics: accuracy, error equal rate, parameter performance, threshold, training time, and testing time. According to the results, the accuracy of the Random Forest, Support Vector Machine, KNN, and Decision Tree algorithms are, respectively, 98, 97.55, 97.28, and 94.26%. Based on the comparing results, Random Forest outperforms the other models, suggesting that Random Forest can be used as the system model for Keystroke Dynamic authentication.

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Filipino language anxiety among science high school students

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Dominic Patric G. Galdonez
[email protected]

A B S T R A C T

This research centers on language anxiety, a persistent issue impeding students’ ability to learn a new language. Language anxiety can cause students to feel inadequate in their language skills, experience self-doubt, and worry about what others think of them. This can negatively impact their performance and self-esteem. The goal of the study is to understand the perspectives of Grade 12 students at the Philippine Science High School-Ilocos Region Campus when it comes to their anxiety while using the Filipino language in their day-to-day activities. To achieve this, the researcher used a quantitative research approach, specifically focusing on Grade 12 students enrolled in the Specialization Years program. The researcher created a survey questionnaire adapted from Jugo (2020) to better suit the student respondents. The data analysis included descriptive statistics using a 5-point Likert Scale. The results showed that students experience varying anxiety levels when using different aspects of language, such as speaking (x̄ =3.19, moderate anxiety), writing (x̄ =3.41, moderate anxiety), receiving corrections (x̄ =3.28, moderate anxiety), selfperceptions (x̄ =3.45, moderate anxiety), and comprehension (x̄ =3.46, moderate anxiety). These findings emphasize the importance of recognizing and addressing language anxiety to create supportive learning environments. In conclusion, this research highlights the complex nature of Filipino language anxiety among Grade 12 students and stresses the need for customized interventions and support systems to enhance their language learning experience. The study provides valuable insights into the ongoing discourse on language anxiety and how it impacts language acquisition in educational settings.

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Investigation on performance analysis of pyramid solar water distillation system

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Sabae Khaing, War War Min Swe
 Corresponding email: [email protected]

A B S T R A C T

Solar water distillation systems are required for developing countries, especially in rural areas with an increasing population and environmental water pollution where there is no clean drinking water. Thus, solar still is the most important technology to increase pure water productivity in these regions. So, it is necessary to explore more about the system of solar distillation. In practical applications, design and performance analysis are essential to predict the efficiency of the solar still. This study aims to present the analysis of the temperature profile and fresh water output of the pyramid-shaped solar water distillation system by theoretical, numerical, and experimental analysis. The CFD simulation of the solar water distillation system was created using ANSYS FLUENT, and the experimental test was conducted in Mandalay, Myanmar, which is situated at a North Latitude of 21.996° and an East Longitude of 96.1° on 23rd April, 2022. In the performance analysis, the glass cover was tilted at 45°, and the water depth in the basin was 1 cm. For output verification, the experimental measurements were compared with theoretical and numerical results. The highest solar heat flux was 811.36 W/m2 in theory and 799.32W/m2 in experiment at 12:00 noon. During the solar still operation, the basin temperature was higher than the water and glass cover temperatures. The highest operating temperatures in the solar still in theoretical, numerical, and experimental analysis were 330 K, 331 K and 332 K respectively. The maximum pure water productivity was obtained at 335.5 ml/hr in theoretical analysis, 357.4 ml/hr in numerical analysis, and 437.5 ml/hr in experimental analysis. It has been found that all the analytical results among the theoretical, numerical, and experimental works show good agreement, which verifies and supports each other.

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Determinants of performance in the board examination for Mechanical Engineering graduates of the Nueva Vizcaya State University, Bambang campus

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Dale Mark N. Bristol, Larry P. Remolazo, Ernesto B. Bausel Jr., Jeanelyn R. Tominez, Jemimah P. Natividad
Corresponding email: [email protected]

A B S T R A C T

A culture of excellence and quality should always incorporate continuous improvement. Institutions of higher learning are the spearheads of creative minds and improve the capability and caliber of the professionals and leaders resulting from the confluence of academic and industrial relationships. A yardstick called board examination is administered to engineering graduates by the Professional Regulations Commission (PRC) to produce licensed engineers in the Philippines. Considering this, the research aims to investigate the determinants of board examination performance for Mechanical Engineering graduates of the Nueva Vizcaya State University, Bambang Campus. The data were gathered through surveys and interviews of mechanical engineering graduates and faculty members involved in board exam preparation programs. To analyze the performance details of the board examination in the Mechanical Engineering program of the Nueva Vizcaya State University, various quantitative methods such as t-test, correlation analysis, logistic linear regression, and path analysis are utilized to test the significance level between 2011 – 2015 and 2016 – 2020, who took the board examination; establish if there is any association between board examination and academic performance, and predict subject areas that affect most the performance in the board examination as well to create a mathematical prediction model in this aspect. The findings of this study would serve as a guide and an eye-opener for engineering learning institutions in determining effective strategies to improve the board exam performance of mechanical engineering graduates and as well enhance the quality of mechanical engineering education.

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Spatial and temporal variations of soil microbial respiration under native and exotic tree species

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Lameck Davie Nyirenda1, James Majamanda, Anas Khalif, Mana Kanjanamaneesathian
Corresponding email: [email protected]

A B S T R A C T

Different tree species can directly or indirectly affect soil conditions. They influence soil microbial diversity and abundance and hence soil respiration. Trees and soil respiration have a complex relationship that is poorly understood, as does the seasonal and spatial variation that naturally occurs in them. This study was therefore conducted to evaluate soil respiration processes under two native tree species, Msuku (Uapaca kirkiana) and Mtondo (Julbernardia paniculata), and one introduced tree species, Malaina (Gmelina arborea). In 2019 (March and October), soil samples were taken at 0.5m, 1.5m, 2.5 m, and 3.5m intervals from the trunks of the chosen tree species at depths of 0–10 cm and 10–20 cm. Using the alkali absorption method, soil respiration was assessed. The findings demonstrated that respiration decreased with the increase in horizontal distance from the trunk of both indigenous species. On the contrary, soil respiration increased with the increase in horizontal distances from the trunks of introduced tree species. The findings also demonstrated that respiration was higher at 0–10 cm than at 10–20 cm soil depths in both March and October under all three tree species. The higher microbial soil respiration in the surface layer could be attributed to better soil aeration, as opposed to the sub-surface soil. Furthermore, soil respiration was higher for soils collected in March than soils collected in October, probably because March is associated with the rainy season in which soil moisture content is higher than October. It can be concluded that different tree species strongly influence spatial and vertical soil respiration differently. This calls for proper selection of tree species to be utilised in agroforestry. Therefore, knowledge of nutrient uptake of various tree species and the influence of tree species on soil processes, but also microbial population effects on nutrient cycling linked to various tree species is essential.

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Comparative analysis of pigment contents, phytochemical constituents, and antioxidant properties of selected plants in the Philippines

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Kim Mariel S. Casuga, Lexter R. Natividad
Corresponding email: [email protected]

A B S T R A C T

During the pandemic, people turned to cultivating ornamental plants in their gardens. One of the trending plants is Mayana (Coleus blumei) for its leaves are pleasing to the eyes. Katuray (Sesbania grandiflora) and Sweet Potato Tops (Ipomoeas batatas), on the other hand, can be found everywhere in the different localities in the Philippines. This study aimed to trace the presence of different phytochemical constituents of Mayana, Katuray, and sweet potato tops. The presence of phytochemical constituents in Ipomoea batatas gave its property of anti-inflammatory, anti-bacterial, anti-fungal, and many more. In addition, results showed the presence of pigments in three plants such as carotenoid and chlorophyll content in the three plant samples. Further, the antioxidant properties were also identified. Analysis of Variance (ANOVA) results showed that there is a significant difference among the three plants at a 5% level of significance in terms of total carotenoid content. Furthermore, statistical analysis showed that there is a significant difference in the chlorophyll a and b in Ipomoea batatas, however, the post hoc test revealed that Coleus blumei and Sesbania grandiflora have no significant difference in their chlorophyll content. Meanwhile, thinlayer chromatographic analysis revealed that Ipomoea batatas has the greatest number of spots of all plant samples. Analysis of the total phenolics and antioxidant activity exhibited that Ipomoea batatas has the least quantitative result which means that it is the most potent among the three plant samples. This study therefore concluded that Ipomoea batatas can be formulated as a drug or supplement due to its antioxidant properties. The remarkable presence of different phytochemical constituents can give rise to new pharmaceutical products in the market.

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Importance of English language on the role of foreign household attendants in attaining an electronically safe environment

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Rodalin N. Asenas, Mary Jean P. Dureza
Corresponding email: [email protected]

A B S T R A C T

This research directed to examine the worth of English language on the role of foreign household attendants in attaining an electronically safe environment. Therefore, the household attendants’ skillfulness in English language played a vital part in this research. Survey inquiry form was utilized in conducting this descriptive research design. The number of respondents was one hundred forty-five workers from eight (8) purposely selected countries, namely Philippines, India, Nepal, Indonesia, Korea, Pakistan, Thailand, and Malaysia. Illustrative data applying rate dispersal, proportionality, average, normal variation, mean and informative evaluations centered on 5-point range were employed, while T-test and Pearson Correlation were used for inferential statistics. Based on the findings, everyone’s achievement is reflected on individual practices and personal related factors which reveal patterns of actions and attributes that establish the connection on its role in attaining an electronically safe environment. Therefore, profiling is very important in the hiring process because household owners can expect that their workers aim at attaining an electronically safe environment while engaging with their tasks. Moreover, the overall results signified that the correlation is significant (2-tailed) at 0.01 level; stating that there is significant relationship involving the personal related factors of the foreign household attendants on the extent of the experienced safety in an electronic environment due to proficiency in English language. The findings further reveal that all items that are positively correlated; meaning its level of influence (increase/decrease) on the extent of experienced of safety is in the same direction. Thus, these variables are congruent in estimating the value of influence on the attainment of electronically safe environment by the foreign household attendants.

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Asphalt modification using thermoplastic polymer components

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Roy O. Anabo
[email protected]

A B S T R A C T

Asphalt modification using thermoplastic polymer components a plastic waste turned into an innovative product, environmentally friendly, and cost-effective. Plastics, specifically thermoplastics have many uses but with the increasing population, consumption of plastic is rampant. To come up with innovative solutions that can be used to minimize plastic and create usage in construction highways, buildings, and houses is the main concern in this study. Therefore, the study aimed to find innovative solutions using plastic waste that can use thermoplastics as an asphalt modification. An experimental research method was used to determine the acceptability and predict what may occur. Based on the findings of the actual observations made from two set-ups (Modified Asphalt and Unmodified Asphalt) it was found the results of acceptability data in the utilization of thermoplastic polymer components under set-up a got a final mean score of 3.9. However, set-up b provided the best result with the highest acceptability mean score of 4.8. Therefore, using thermoplastic polymer components in terms of texture, strength/durability, and soundness is highly acceptable. The cost of modified asphalt amounted to Php 10.00; it shows positively that the use of thermoplastics for modifying asphalt pavement is not costly but rather cheap. Utilization of recycled thermoplastic polymers as an asphalt modification will contribute strength of the pavements, help to attain sustainability in reducing plastic waste, and friendly environment innovation techniques. A highly recommended follow-up marshall-stability testing was conducted to have more reliable results regarding the strength/durability, modulus of elasticity, and rupture of the asphalt.

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Students’ acceptance of learning management system: Analysis of responses based on generational differences

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Mohamad Syafri, Jayanti Puspita Dewi
Corresponding email: [email protected]

A B S T R A C T

The dynamic improvement of technology has led the world to move at lightning speed, affecting aspects of human life, including education. The Learning Management System (LMS) is one of the crucial technologies nowadays, especially during and post-COVID-19. Prior studies have explored this subject, including seeing the user’s responses. However, little of the study could have a vast range with various background users as most education institutions are unlikely to have students from too heterogeneous backgrounds, especially age. Thus, this study aims to see how people from different generations, namely Generation X, Millennials, and Generation Z, respond to the LMS application. The study took place at Universitas Terbuka, one of the universities that implemented distance learning in their learning process. The 23-question adapted from the Technology Acceptance Model of Davis was designed and sent to students of Universitas Terbuka using Google Forms. Two main aspects of technology acceptance, behavior, and technology usefulness were the focus. Kendall’s Tau formula was utilized to analyze the obtained survey data. The findings show that all generations respond well to technology: Generation X (2,04/2,15), Millenials (1,90/1,94), and Generation Z (2,07/2,17). The further analysis explained that there was no correlation between age and technology acceptance for behavior towards technology (0,964) and usefulness (0,886). The research result is believed to help educators and stakeholders maximize the use of technology in education. It also brings a broader point of view regarding the issues by serving as the basis and reference for E-learning studies. This research is considered to be beneficial for those focusing on integrating technology into distance learning.

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Enhancing operational efficiency and financial reporting through Oracle NetSuite ERP implementation: A case study in a logistics company

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Stepani Sisca Wulandari, Kevin Maulana
Corresponding email: [email protected]

A B S T R A C T

The objective of this study is to investigate the outcomes of implementing Oracle NetSuite, an Enterprise Resource Planning (ERP) software, in a logistics company located in Indonesia. This research presents a case study that examines the implementation of Oracle NetSuite to reengineer business processes within the company. Employing a descriptive research approach, this study explores the specific context of the business process redesign in one of the logistics companies in Indonesia as a case study for utilizing Oracle NetSuite ERP, which can provide valuable insights for future research. The data for this study was collected through semistructured interviews, observation, and documentation analysis. The findings reveal that “Logistics Company” utilizes various modules such as Procure to Pay, Inventory, Fixed Asset, and General Ledger within the ERP Oracle NetSuite system to generate financial reports for the company. In addition, the study focusing on the complications faced during transaction recording. The structure of the IT department in “Logistics Company” and the application of Oracle NetSuite software for financial reporting are both detailed. The study highlights the benefits and challenges associated with implementing ERP systems, emphasizing the importance of aligning the chosen ERP system with the organizational functionalities, culture, strategy, and structure. Also, the modules within Oracle NetSuite, including Procure To Pay, Inventory, Fixed Asset, and General Ledger, are explained, along with their respective functionalities. The research concludes by emphasizing the importance of Oracle NetSuite in effectively handling financial transactions and producing reports for the “Logistics Company”. The complexities of ERP projects and the need for thorough readiness processes are also explored, suggesting solutions for effective ERP implementation. The adoption of Oracle NetSuite ERP significantly benefits “Logistics Company” in its day-to-day operations and facilitates the preparation of financial reports.

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