Physical Sciences and Mathematics Commons^™

Early Detection Of Risk Factor For Suicidal Ideation Among Senior High School Students In Jakarta: Updated Measurement, Nova R. Yusuf, Sabarinah Prasetyo, Byron J. Good

Kesmas

The key strategy to address suicide in adolescents is school-based suicidal prevention by adapting a screening instrument to the local culture and policymakers’ perception of suicide. This study aimed to develop an instrument for the early detection of risk for suicidal ideation and identify influential risk factors for suicidal ideation among high school students in Jakarta, Indonesia. This study was conducted in 2018 with a mixed-method design (quantitative and qualitative approaches). It was found that 5% of students had suicidal ideation in July–November 2018, and 13.8% had a high-risk factor for suicidal ideation. The instrument developed in this study consisted …

Development Of A Web-Based Information System For Student Leave Permission At Dar Al-Raudhah Islamic Boarding School: Iso Quality Standards Analysis, Bonita Destiana, Priyanto Priyanto, Rahmatul Irfan, Muhammad Gus Khamim, Muhammad Yusuf Ridlo, Muhammad Iqbal

Elinvo (Electronics, Informatics, and Vocational Education)

Dar Al-Raudhah Entrepreneur, Islamic Boarding School, has adopted digital technology by upgrading hardware and software also investing in reliable internet infrastructure. However, this school still faces issues with students’ leave permission process due to reliance on manual bookkeeping and Excel, which leads to potential errors. Based on those problems, this research aims to create a web-based student leave permission system called SIPERSAN. The SIPERSAN system was developed with a Waterfall development model, which includes requirements analysis, design, implementation, testing, and deployment. The database is managed with MySQL, and the system is developed using PHP with the Laravel framework. Based on …

Algorithms And Solution To The Problem Of Parametric Identification Of The Gas Composition Of The Atmosphere, Baxodir Asatullayevich Xolxodjayev, Erkin Abduraxmanovich Esanov, Bekjon Abdullayevich Kuralov

Technical science and innovation

This article discusses the problem of identifying the gas composition of the atmosphere, which has important practical significance and allows us to illustrate the advantages of the proposed regularizing solution algorithms. Every еar, human industrial activity increasingly aggravates the problem of environmental protection. Among the diverse human impacts on nature, air pollution occupies a special place. Every еar, up to 500 thousand various pollutants are emitted into the atmosphere. In this regard, the task of monitoring the composition of the atmosphere is very relevant. Numerical studies of the problem of identifying the gas composition of the atmosphere have shown higher …

An Experiment Study On Implementing Syngas On A Small Generator Set, Bui Van Chinh, Khong Vu Quang, Khanh Nguyen Duc

ASEAN Journal on Science and Technology for Development

This paper presents an experiment on syngas's influence on the performance and pollutant characteristics of a mechanical diesel engine generator set. Using syngas as an external fuel is good for medium and light loads of less than 80%. While a moderate substitution of syngas will contribute to good performance at high loads, a larger level of syngas provided may degrade engine performance. The brake-specific energy consumption rises as the replacement syngas flow increases. Using syngas as an external fuel to substitute for a part of the diesel might cause the engine to perform unstablely. The more syngas replacements, the greater …

Early-Stage Dynamics Of The Covid-19 Pandemic: A Geospatial Analysis Of Real Estate And Socio-Demographics In New York City’S Msa, Daniel J. Kraemer, Bo Zhang

International Journal of Geospatial and Environmental Research

COVID-19 has affected all aspects of global activity and has since reshaped and restructured society itself. In particular, real estate has experienced numerous changes in composition since March of 2020. This study examined the early effects of COVID-19 on New York City’s real estate market through a social equity lens. Real estate dynamics and socioeconomic characteristics in New York City’s metropolitan statistical area (MSA) were analyzed through geographically weighted regressions (GWRs) on the period following the outbreak in the United States. The results suggest that there was a preference towards lower-density neighborhoods in the face of the contact-dependent COVID-19 pandemic. …

Sigma Gamma Epsilon – Call To Convention: First Notice

The Compass: Earth Science Journal of Sigma Gamma Epsilon

The National Council has accepted an invitation from the Delta Psi Chapter (Western Illinois University) to host the Society’s 47th Biennial Convention on WIU’s Quad Cities Campus – located in Moline, Illinois, on the east bank of the Mississippi River. The convention is scheduled for April 11–13, 2025, and planning is underway. The Friday afternoon through Sunday noon schedule is designed to minimize the number of class days that delegates would need to miss. The Quad Cities International Airport (MLI) serves the area. At this time, we encourage chapters to “save the date” and to start making plans for a …

A History Of The Geology Program At The University Of Tennessee At Martin, Michael A. Gibson

The Compass: Earth Science Journal of Sigma Gamma Epsilon

The teaching of geology has as long a history as The University of Tennessee at Martin has itself, extending back to 1901 when the first geology class was offered at the campus’s original institution, Hall-Moody Institute, a small Baptist college. Geology, usually with geography, was offered as a service course to the primary programs of agriculture, education and, later, engineering. Faculty turnover during these formative years was frequent. When the school was acquired by the University of Tennessee in 1927 and became UT Junior College, geology remained a service course. Geology offerings had been expanding since 1947 and, in 1951, …

Geoscience Student Organizations At The University Of Tennessee At Martin, Michael A. Gibson, Natalie Hudson

The Compass: Earth Science Journal of Sigma Gamma Epsilon

In celebration of 2022 Sigma Gamma Epsilon 46th National Convention being hosted by the University of Tennessee at Martin (UT Martin), Eta Alpha Chapter, this paper serves a synopsis that celebrates the history of student clubs and professional organizations in the geosciences program at UT Martin. The first geoscience student organization officially recognized by the University was devoted to geology, the GeoClub, and established in 1970 and still serves as the primary student organization for all of the geosciences. UT Martin established the Eta Alpha Chapter of Sigma Gamma Epsilon honor society in 1997. A Travel and Tourism club was …

Isolating Microbes From The Surface Of An Introductory Laboratory Halite Hand Sample, Kesley G. Banks, Michael A. Gibson, Matthew A. Pritchett

The Compass: Earth Science Journal of Sigma Gamma Epsilon

Introductory geology labs stress simple physical testing (luster, hardness, etc.) to identify common minerals, using mineral charts to eliminate minerals not exhibiting a particular property. Special properties (magnetism, specific gravity, taste, etc.) for specific minerals narrows mineral identity. Students often express safety concerns about licking minerals, especially when they realize others have previously licked the specimen. As an exercise in medical geology, we cultured microbes from a halite sample used for nearly 25 years and licked by numerous students over that time span (Sample 1), a commercially purchased unused and freshly exposed surface of halite licked by one person (Sample …

The History Of The Tennessee Earth Science Teachers (Test), Michael A. Gibson

The Compass: Earth Science Journal of Sigma Gamma Epsilon

Tennessee Earth Science Teachers (TEST) was founded in 1990 to promote awareness of the need to integrate Earth science and geology education into the secondary school curricula of Tennessee and to ensure that Tennessee students received the curricular and instructional benefits of Earth Systems education. That mission expanded to include all K-12 grades and to infusing Earth science into other disciplines. A legacy of the participants from a 1991 Tittle II geology workshop for Tennessee teachers, TEST was instrumental in designing and providing academic and pedagogical training, disseminating educational materials, and with networking K-12 teachers with higher education geoscience educators …

The Journey Into Inquiry Land In Tennessee: How To Get There From Anywhere? Lessons Learned Over 25 Years, Michael A. Gibson, Don W. Byerly Jr

The Compass: Earth Science Journal of Sigma Gamma Epsilon

Driven by changes in the National Standards during the 1990s, inquiry became the pedagogical methodology of choice for K-12 sciences as a major paradigm shift. Inquiry was chosen because it realistically and accurately modeled how scientists conduct scientific studies. Scientific inquiry is itself a learning process, and early educational research suggested that students learned more efficiently through inquiry. However, inquiry was a difficult pedagogy for teachers to learn and for students to experience, as it appears chaotic and decentralized. K-12 Earth science in Tennessee was in need of revitalization, in terms of shifting to the new Earth systems curriculum and …

Sigma Gamma Epsilon Chapter And Student Awards For Academic Year 2023-2024, Lee Potter

The Compass: Earth Science Journal of Sigma Gamma Epsilon

The Society of Sigma Gamma Epsilon (SGE) encourages efforts to broaden the education and impact of its members through community outreach. In academic year 2023–2024, four awards were given at the chapter level: The Chapter Service Award to Gamma Sigma and Gamma Chi; and The James C. Walters Quality Chapter Award to Gamma Sigma and Gamma Chi. Individual merit was recognized through the W. A. Tarr awards given to twenty-nine members by their respective chapters. Two awards, the Austin A. Sartin and Charles J. Mankin Outstanding Poster Awards, were given to three students for merit in scientific communication at the …

Introduction To The Issue: University Of Tennessee At Martin Eta Alpha Chapter Volume, Michael A. Gibson

The Compass: Earth Science Journal of Sigma Gamma Epsilon

Welcome to the Eta Alpha Chapter volume of The Compass. The geosciences degree program at The University of Tennessee at Martin celebrated its 50th anniversary in 2022, just in time for the 46th Biennial Convention of Sigma Gamma Epsilon. The cover photo for this volume depicts the Joseph E. Johnson EPS (Engineering and Physical Sciences) Building that has been the home of the geosciences program since its construction in 1960. This volume is a series of papers that were initially compiled to be part of the 46th biennial convention volume that was to occur in 2019; however, the COVID-19 pandemic, …

Examining The Relationship Between Land-Use Cover Change And Sociodemographic Characteristics: A Case Study Of Madison County, Tennessee, Thomas A. Depriest Jr., Anzhelia Antipova, Hsiang-Te Kung, Esra Ozdenerol

The Compass: Earth Science Journal of Sigma Gamma Epsilon

This study sought to holistically examine urbanization in Jackson, Madison County, TN. In order to accomplish this objective, a study of land-use and land cover (LULC) change in Madison County, TN from 1992–2011 was conducted. Once completed, noted changes in LULC were then compared to certain socio-demographic factors; these included, population, population density, point distance, central business district, and distance to roads. To determine if any significant relationships existed between socio-demographic factors and quantified LULC changes Spearman’s Correlations were utilized. Relationships between socio-demographic factors and land-use indicators were established as urban areas grew, agricultural and forested areas declined, and population …

Impact Of Urbanization On Estimated Surface Runoff And Resulting Issuance Of Flash Flood Warnings In Jackson, Tennessee, Thomas A. Depriest Jr., Dorian J. Burnette, Ryan Parish, Hsiang-Te Kung

The Compass: Earth Science Journal of Sigma Gamma Epsilon

Land-use and land cover (LULC) changes for the Jackson, TN area from 1992–2011 were evaluated based on data from the National Landcover Database. During the time of study, this area underwent noted changes in LULC with an increase in the area defined as urban and decreases in forested and agricultural areas. This study also makes note of the increase in the number of days flash flood warnings were issued during the 1990’s as compared to the 2000’s. During the same time period, high intensity rainfall events during 1990’s (n=198) did not appreciably increase when compared to the 2000’s (n=208); therefore, …

The Compass - Volume 93 Issue 2 - Complete Issue, Scott R. Beason

The Compass: Earth Science Journal of Sigma Gamma Epsilon

No abstract provided.

Sigma Gamma Epsilon Student Research Poster Session, Geological Society Of America Annual Meeting 2023, Pittsburgh, Pennsylvania, Usa, Scott Beason

The Compass: Earth Science Journal of Sigma Gamma Epsilon

The Society of Sigma Gamma Epsilon sponsors an annual poster session at every Annual Meeting of the Geological Society of America. The 35th Sigma Gamma Epsilon undergraduate research poster session took place during the 2023 Geological Society of America Annual Meeting in Pittsburgh, Pennsylvania, USA, on Monday, October 16, 2022. Sixty-three (63) posters were presented in Exhibit Hall B at the David L. Lawrence Convention Center between 8:00 AM and 5:30 PM at the poster session. Titles, authors (italics for the presenting author), affiliations, and abstracts for each poster are listed in this report.

Privacy Risks And Regulatory Challenges In Smart Grids And Renewable Energy Systems, Mikołaj Rajca

internetowy Kwartalnik Antymonopolowy i Regulacyjny (internet Quarterly on Antitrust and Regulation)

Smart grid technologies are central to the global shift towards a more efficient and sustainable energy infrastructure, integrating advanced digital systems with traditional power networks. While these technologies offer significant benefits, including enhanced energy management and the seamless integration of renewable energy sources, they also introduce complex privacy challenges. The extensive data collection and real-time communication capabilities inherent in smart grids raise concerns over consumer privacy, data breaches, and cybersecurity threats. This paper critically examines these privacy risks within the context of evolving regulatory frameworks such as the GDPR, NIS2 Directive, and the forthcoming EU AI Act. The discussion emphasizes …

Impacts Of Climate Change In The United States, Nathan T. Thompson

Journal of Nonprofit Innovation

Climate change, a shift in long-term climate patterns primarily driven by anthropogenic factors, poses a super wicked problem impacting every sector and region globally, including the United States. This paper explores the scientific basis of climate change, its contributing factors, and the myriad consequences on terrestrial and aquatic systems, as well as mental health. Notably, the emission of greenhouse gases from fossil fuels and agricultural activities is the primary cause, exacerbated by ideological division and psychological distance. The U.S. has seen some progress with a 7% decrease in emissions over the past 30 years and a growing shift toward renewable …

An Archaeological And Archaeoseismological Perspective On Earthquakes In The Coastal Cities Of Western Anatolia In The 3rd Millennium Bce: Settlement Abandonment And Changes In Social Structures, Ümi̇t Gündoğan

Turkish Journal of Earth Sciences

This study investigates the impact of the earthquakes that occurred in the first half of the 3rd millennium BCE on Western Anatolian settlements, aiming to determine the dates of the earthquakes that happened during the prehistoric period using the earthquake layers of the settlements and associated C14 data. The focus of the paper is the investigation of the effects of two earthquakes that occurred in the region during the first half of the 3rd millennium BCE on the settlements of the region. The first earthquake occurred around 2800 BCE and damaged settlements in the area of İzmir. Evidence of this …

Sequence Stratigraphy And Hydrocarbon Potential Of The Paleozoic Successions On The Arabian Platform And Southeast Türkiye, Muhi̇tti̇n Şenalp, Sema Teti̇ker

Turkish Journal of Earth Sciences

In 1989, the first prolific hydrocarbon reservoirs were discovered by Saudi Aramco in the highly porous and permeable friable continental sandstones (Unayzah reservoirs) and shallow marine carbonates (Khuff reservoirs) of the Paleozoic successions in south of Riyadh, Central Arabia. These successions were strongly affected by tectonic movements (Caledonian and Hercynian orogenesis) and Early and Late Paleozoic Gondwana glaciations. Therefore, some sections were fully eroded or significantly reduced in their thickness. The sequence stratigraphic interpretation of the Paleozoic successions helped to understand the depositional environments and regional distribution of the source, reservoir and cap rock facies in an improved palynologic studies. …

Detecting Edges Of Geologic Sources From Gravity Or Magnetic Anomalies Through A Novel Algorithm Based On Hyperbolic Tangent Function, Hanbing Ai, Yunus Levent Eki̇nci̇, Ahmad Alvandi, Hazel Deni̇z Toktay, Çağlayan Balkaya, Arka Roy

Turkish Journal of Earth Sciences

Directional derivative-based edge detectors are commonly used to outline the abrupt lateral variations in densities or magnetizations of geologic sources from potential-field datasets. Some subtle traces of faults, lithological contacts, and lineaments can be made more visible on anomaly maps using these algorithms. However, these algorithms generally suffer from common limitations such as blurry edges with low-resolution or faulty boundaries. To minimize these challenges, we proposed a new efficient edge detector that benefits from the hyperbolic tangent function. The performance of this detector was tested on the responses of a synthetic gravity model and Bishop's complex magnetic model. A Gaussian …

Immobilization Of Ni(Ii) On Amine-Functionalized Mesoporous Silica As Catalyst For Benzyl Alcohol Acetylation Reaction, Wardah Nabilah, Eko Sri Kunarti, Fajar Inggit Pambudi

Makara Journal of Science

In this study, amine-functionalized and Ni(II)-immobilized mesoporous silica materials were synthesized. This research aimed to synthesize mesoporous silica based on rice husk ash functionalized with amine and immobilized with Ni(II). The activity of amine-functionalized and Ni(II)-immobilized mesoporous silica materials was studied for the acetylation of benzyl alcohol with acetic anhydride as the acetylating agent. First, mesoporous silica was synthesized using rice husk ash using the sol–gel method, followed by amine functionalization using (3-aminopropyl)triethoxysilane (APTES) and Ni(II) immobilization through ultrasonic treatment. The results obtained showed that amine-functionalized and Ni(II)-immobilized mesoporous silica (SiO₂/APTES/Ni(II)) were successfully synthesized, confirmed by Fourier transform …

Corrigendum To “A Two-Stage Deformation Of The Anatolian Plate Deduced Frompaleomagnetic Signals: The Initial Age Of The Anatolian’S Escape” [Turkish Journal Ofearth Sciences 33 (3) 2024 243-259 ], Mualla Cengi̇z, Savaş Karabulut

Turkish Journal of Earth Sciences

This corrigendum is to address an issue regarding the manuscript's previous title. The authors have regrettably noticed that the title is incorrect in the original published version of this paper. To rectify this oversight and ensure the accuracy of the published work, the title has been corrected for your reference below: A two-stage deformation of the Anatolian plate deduced from paleomagnetic signals: the initial age of the Anatolian escape.

Link to the original submission: https://journals.tubitak.gov.tr/earth/vol33/iss3/2/

First-Principles Calculations Of Thermoelectric Properties Of Fe-Based Full- Heusler Fe2cusi, Ai Nurlaela, Dwi Nanto, Anugrah Azhar, Elvan Yuniarti, Tony Kristiantoro, Dedi Dedi

Makara Journal of Science

A first-principle study using density functional theory (DFT) and Boltzmann transport was conducted to evaluate the thermoelectric (TE) properties of an Fe-based full-Heusler alloy. The compound studied is Fe₂CuSi with a Cu₂MnAl-type structure. The electronic properties of Fe₂CuSi were obtained using DFT calculations by running the Quantum ESPRESSO (QE) package. By contrast, TE properties, including electron thermal conductivity, electric conductivity, and Seebeck coefficient, were computed using a semi-empirical Boltzmann transport model solved through the BoltzTraP software at 50–1,500 K temperature range. The spin-orbit coupling effect on these properties was also evaluated, demonstrating notable effects …

Assessment Of Water Pollution In A Waste Storage Drainage Area (A Case Study In Eskişehir, Türkiye), Ali̇ Kayabaşi, Özlem Toygar Sağin, Candan Gökçeoğlu

Turkish Journal of Earth Sciences

Before 2016, the Eskişehir city landfill was an irregular landfill. Since then, it has been transformed into a regulated landfill. This study aimed to investigate the presence of pollution in the landfill drainage area. For this purpose, water samples were collected from the landfill drainage area and the Kadirbey Farm Spring, upstream of the landfill area, during the rainy and dry seasons of 2021. Analyses of the heavy metal content, total dissolved soil (TDS), chemical oxygen demand, biochemical oxygen demand, pH, phenol material content, ammonia nitrogen content, and conductivity were conducted on the samples. Electrical resistivity tomography (ERT) measurements were …

Top To Bottom Interactive Velocity Analysis Using Travel-Time Ellipses And First Break Times From Walkaway Vertical Seismic Profiling Data: A Synthetic Study, Cemal Erdemi̇r

Turkish Journal of Earth Sciences

An interactive velocity analysis method is introduced in this paper and its efficacy is tested on various walkaway vertical seismic profile (WVSP) modeled data sets. In WVSP surveys, interval velocity profiles are determined fairly accurately along the VSP borehole using first break travel time picks from the zero-offset VSP (ZVSP) data. However the accuracy of these vertical velocities fade away quickly as the source distance (offset) from the VSP borehole increases due to possible horizontal changes in the geology or dips of the horizons. If the layer boundaries are not known, a simple approach type of ray tracing using horizontally …

Preliminary Molecular Study Of Chloramphenicol Anchoring On Laccase Enzyme From Trametes Hirsuta, Hanzhola Gusman Riyanto, Afiten Rahmin Sanjaya

Makara Journal of Science

Antibiotics are one of emerging pollutants generally emitted from livestock production and the food industry to the environment. The presence of this pollutant could initiate the development of resistant bacteria that can be fatal to human health. The degradation of antibiotics using enzymes or microbe could be an alternative because the residue or intermediate product is less harmful than of the conventional method. This research aims to support a preliminary study of the degradation of antibiotics using enzyme through molecular docking via Molecular Operating Environment software and molecular dynamics (MD) study via CABSFLEX 2.0 and WebGro macromolecular simulations. The molecular …

An Optimal Schedule Recovery Model For Transportation Carriers Under Uncertain Typhoon Disruption Periods, Yi-Chun Chen, Shangyao Yan

Journal of Marine Science and Technology

Due to the unsettled weather conditions caused by typhoons, it is not possible to forecast the time when a typhoon will arrive or depart accurately. The uncertainty regarding the duration of typhoon disruptions makes it challenging for transportation carriers to efficiently adjust their schedules. In this study, to deal with the problem of airline fleet rerouting, flight rescheduling, and passenger reassignment for uncertain disruption periods caused by a typhoon, we utilize network flow techniques with the concept of probability to construct a stochastic model for minimizing the total operating costs. A heuristic algorithm based on the divide-and-conquer technique is adopted …

Relative Equilibria Of Pinwheel Point Mass Systems In A Planar Gravitational Field, Ritwik Gaur

Rose-Hulman Undergraduate Mathematics Journal

In this paper, we consider a planar case of the full two-body problem (F2BP) where one body is a pinwheel (four point masses connected via two perpendicular massless rods) and the other is a point mass. Relative equilibria (RE) are defined to be ordered pairs (r, θ) such that there exists a rotating reference frame under which the two bodies are in equilibrium when the distance between the point mass and the center of the pinwheel is r and the angle of the pinwheel within its orbit is θ. We prove that relative equilibria exist for …