Writing Circuit Histories, Sascha Engel

Fast Capitalism

No abstract provided.

Pitfalls Of Multiplied 3d Landforms Projection: Mapping Deep Multilevel Cave Systems In The Alps (Gamssteig Cave System, Göll Massif), Mateusz Golicz, Jacek Szczygieł

International Journal of Speleology

Cave mapping represents one of the most complex challenges in geomorphological cartography, as it must convey the true three-dimensional geometry of subterranean spaces such as overlapping passages, irregular cross-sections, and variable ceiling and floor morphologies, within a two-dimensional framework. This study examines the methodological and interpretive challenges of cave mapping, utilizing the Gamssteighöhle cave in the Austrian Alps as a case study. During the 11 years of exploration, over 10 km of passages were surveyed using the DistoX vector survey method. Yet, the complex morphological forms necessitated deviations from the standard symbology recommended by the International Union of Speleology. Several …

Correlation Analysis Of Factors Associated With Students’ Numeracy Skills Using Decision Tree Algorithms, Yenita Roza, Arisman Adnan, Zul Indra, Tuti Alawiyah

Numeracy

Numeracy is a critical competency for academic and everyday functioning. This study investigates the key factors associated with students’ numeracy skills by employing decision tree algorithms as a data mining technique. The dataset used in this study is educational assessment data from Indonesia. Utilizing a dataset comprising 6,953 entries and 60 variables from Education Report, the research adopts an exploratory approach involving data preprocessing, exploratory data analysis, and decision tree model construction. The findings reveal that students’ literacy skills serve as the most dominant predictor of numeracy proficiency, emerging as the root node in the decision tree structure. Additional associated …

Predicting Male Flowering Time In Maize Using Machine Learning Technique, Dipok Deb

Data Science and Data Mining

This study compares three machine learning approaches—Elastic Net, Principal Component Regression (PCR), and Partial Least Squares (PLS)—for variable selection and prediction within a high-dimensional Maize-GWAS framework. The goal was to accurately predict the complex polygenic trait of time to male flowering while managing the challenges of numerous, highly correlated genetic markers. The ENET model, which combines l1 and l2 penalties, delivered the highest predictive accuracy and successfully identified a select subset of the most influential genetic variants. In contrast, PCR and PLS, both utilizing dimension reduction, offered a significant advantage in computational speed and model stability. The findings confirm that …

Sparc Grade 2 Integrated Coding-Math Lessons, Spatial Activities And Robot Coding (Sparc)

Spatial Activities and Robot Coding (SPARC)

SPARC-Math Grade 2 Integrated Coding-Math Lessons with related Utah Core Standards and lessons for Spatial and Programming Language and Geometry.

Datasets For Response Of A Liquid Water Cloud To In Situ Hygroscopic Seeding, James Simmons

Michigan Tech Research Data

We have performed experiments in the Michigan Tech Pi Chamber to assess the response of a steady-state, liquid water cloud to in situ injection of a hygroscopic powder. Three materials were tested: jet-milled NaCl, a newly developed NaCl-TiO2 core-shell material, and Arizona test dust as a non-hygroscopic control. Injection of the hygroscopic materials resulted in an increase of the local liquid water content, stimulating formation of droplets up to 60 microns in diameter. Upon injection of the powders, the pre-existing cloud in the chamber collapsed.

Growth Patterns And The Shift From Predominantly Female To Balanced Sex Ratios In Carassius Gibelio (Bloch, 1782): A Comparative Study Of Lotic And Lentic Populations In  Serbia, Tamara Mitić, Jelena Čanak Atlagić, Ana Marić, Jelena Stanković Ristić, Nikola Marinković, Momir Paunović, Predrag Simonović

Turkish Journal of Zoology

Since its introduction into Serbian watercourses, the invasive Carassius gibelio (Bloch, 1782) (Prussian carp) has spread rapidly. This paper provides an up-to-date overview of the sex ratio, age structure, and growth parameters in Serbian  populations of this fish and describes how growth varies in two contrasting  ecosystems: lotic and lentic. A total of 133 individuals were sampled. The individuals  from lentic habitats were longer on average, with no significant differences in average  weight or age between the two ecosystem types. There was a difference in  the sex ratio between the ecosystems, as indicated by a higher proportion of males in …

Gravitational Wave Memory From Binary Neutron Star Mergers, Jamie Bamber, Antonios Tsokaros, Milton Ruiz, Stuart L. Shapiro, Marc Favata, Matthew Karlson, Fabrizio Venturi Piñas

Department of Physics and Astronomy Faculty Scholarship and Creative Works

The gravitational wave signal produced by the merger of two compact objects includes both an oscillatory transient and a nonoscillatory part, the so-called memory effect. This produces a permanent displacement of test masses and has not yet been measured. We use general relativistic magnetohydrodynamic simulations, including neutrinos, with several representative viable equations of state, to quantify—for the first time—the effects of the neutron star magnetic field, neutrino emission, and the ejected mass on the linear and nonlinear displacement memory in binary neutron star mergers. We find that the additional contributions due to the emission of electromagnetic radiation, neutrinos and baryonic …

Fairmaterials: Ontology Tools With Data Fairification In Development, Alexander Harding Bradley, Jonathan E. Gordon, Balashanmuga Priyan Rajamohan, Van D. Tran, Nathaniel Hahn, Kiefer Lin, Hayden W. Caldwell, Arafath Nihar, Quynh D. Tran, Yinghui Wu, Laura S. Bruckman, Erika I. Barcelos, Roger H. French

Student Scholarship

The bilingual FAIRmaterials package simplifies the creation and visualization of materials and data science ontologies. FAIRmaterials, available in the Python and R languages, addresses the complexities associated with traditional ontology editors based on manual user input such as Protege (Musen, 2015) with an intuitive workflow and easy-to-use templates, making it accessible to users both experienced and inexperienced with ontologies. The FAIRmaterials package is its ability to programatically convert simple and structured CSV inputs into rich, well-defined ontologies. This capability is designed to support the findability, accessibility, interoperability, and reusability (FAIR) (Wilkinson et al., 2016) of research data and serve as …

Aerodynamic Analysis Of The Constrained Naca 8412 Airfoil For Formula Sae Application Using Thin-Airfoil And Lifting-Line Theories, Trevor Fried, Carson Running

Mechanical Engineering Student Publications

This project applies Thin-Airfoil Theory (TAT) and Lifting-Line Theory (LLT) to evaluate the aerodynamic characteristics of the inverted NACA 8412 airfoil as a single-element rear wing for Formula SAE. The 2D analysis was validated against XFOIL (Re = 480,000), confirming a zero- lift angle of αL=0 = -8.326° and establishing a viscous limit of cl,max ≈ 1.90 at αstall ≈ 13.0°. The 3D LLT model quantified the induced drag (CD,i), demonstrating that the wing's low aspect ratio and rectangular planform reduce efficiency compared to elliptic loading, with the induced drag being the dominant total drag component at high angles of …

V-22 Osprey Proprotor, Derek Krieger, Carson Running

Mechanical Engineering Student Publications

This paper covers an aerodynamic analysis of the Boeing Bell V-22 Osprey proprotor blade by utilizing thin-airfoil theory (TAT) and lifting-line theory (LLT). The primary focus is how the coefficient of lift and induced drag respond to changes in the angle of attack of the proprotor blades. The proprotor blade is modeled as a finite wing based on the NACA 63-212 airfoil. The wing has a geometric twist of -35 degrees from root to tip. The theories used to evaluate the blade design are limited by the assumption of incompressible, inviscid flow. The results of the analysis indicate that lift …

Executive Leadership Education For Every Emergency Medical Services Professional : A Qualitative Study, Joseph D. Danao Ii

Student Dissertations

The Emergency Medical Services (EMS) profession faces numerous challenges in maintaining sufficient capacity to provide frontline medical care amid increasing demand for its services from government officials and the public. The purpose of this qualitative phenomenological study is to explore the experiences of EMS professionals on how the lack of executive leadership education impacts their careers and the viability of their organizations. The problem is that EMS professionals widely lack the executive-level leadership education needed to thrive in their professional careers and ensure the viability of their EMS organizations (Basnawi, 2023; Naidoo et al., 2015). The research questions are developed …

Weather Conditions Associated With Citrus Canker Incidence Caused By Aw Strain In The Lower Rio Grande Valley Of South Texas, Amit Sharma, Teresa Patricia Feria-Arroyo, George Yanev, Madhurababu Kunta

School of Integrative Biological & Chemical Sciences Faculty Publications

Citrus canker, caused by bacterium Xanthomonas citri subsp. citri (Xcc), affects the citrus industry by making the fruit unmarketable due to unsightly lesions on the fruit. Citrus canker caused by a relatively new AWstrain of Xcc was reported on the citrus trees in the residential areas of the Lower Rio Grande Valley (LRGV) of South Texas. Xcc AW has a limited host range, predominantly affecting limes and a few other citrus species. Previous work has reported prevailing environmental conditions that influence the incidence and spread of the citrus canker caused by the Asiatic A strain. However, no information is available …

Revealing The Fuel Of A Quantum Continuous Measurement-Based Refrigerator, Cyril Elouard, Sreenath K. Manikandan, Andrew N. Jordan, Géraldine Haack

Mathematics, Physics, and Computer Science Faculty Articles and Research

While quantum measurements have been shown to constitute a resource for operating quantum thermal machines, the nature of the energy exchanges involved in the interaction between system and measuring apparatus is still under debate. In this work, we show that a microscopic model of the apparatus is necessary to unambiguously determine whether quantum measurements provide energy in the form of heat or work. We illustrate this result by considering a measurement-based refrigerator, made of a double quantum dot embedded in a two-terminal device, with the charge of one of the dots being continuously monitored. Tuning the parameters of the measurement …

Blockchain Adoption In Thailand’S Elections: Perspectives, Limitations, And The Proposed Tberm Model, Charm Peeraphirom, Waiwit Chanwimalueng

Jurnal Wacana Politik

This study assesses Thailand’s readiness for blockchain-based elections by utilizing qualitative methods and semi-structured interviews with five experts in law, technology, economics, and administration. The data were analyzed through the dimensions of privacy, accessibility, transparency, security, and scalability. Findings reveal that while blockchain enhances integrity, significant barriers exist including insufficient transaction throughput, high costs, voter coercion risks, and limited digital literacy. Legal gaps regarding the PDPA also hinder adoption. Consequently, the study proposes the Thailand Blockchain Election Readiness Model (TBERM) which is a hybrid framework integrating blockchain auditing with physical polling units to mitigate security and accessibility concerns. The results …

Integrating Adversarial Scenarios Into Llm Security Labs: An Experience Report On A Hands-On Approach, Dominic A. Wilson

Journal of Cybersecurity Education, Research and Practice

This paper presents an exploratory case study detailed as a pedagogical experience report on integrating adversarial Large Language Model (LLM) scenarios into a graduate cybersecurity curriculum. In addition to prompt injection, sophisticated techniques such as jailbreaking and model inversion pose emerging threats that traditional computer security curricula often lack. We present the design and implementation of a structured, hands-on module addressing this gap, utilizing a custom Retrieval-Augmented Generation (RAG) platform with local open-source LLMs. A cohort of 16 graduate students participated in this two-week pilot module, engaging in "red team" activities to actively exploit model alignment and privacy vulnerabilities. The …

Structure-Conduct-Performance (Scp) Analysis Of Garut Sheep Market In Garut Regency, Sabrina Nurhasanah, Achmad Firman, Lilis Nurlina

Jurnal Ilmu Ternak Universitas Padjadjaran

This study aims to analyze the structure, conduct, and performance (SCP) of the Garut sheep market in Garut Regency, West Java. Garut sheep are one of the region’s leading livestock commodities with high economic and cultural value. However, the marketing of Garut sheep remains inefficient due to issues such as imperfect market structures, price fluctuations, and the weak bargaining position of farmers. A descriptive quantitative research method was employed, utilizing a case study approach in six sub-districts of Garut Regency. Data were collected through surveys, interviews, observations, and focus group discussions (FGD) involving sheep farmers and market intermediaries. The findings …

Growth Performance Of Laying Hens Fed Diets Containing Different Levels Of Palm Kernel Meal And Copra Meal, Aynan Gunawan, Burhanudin Sundu, Ummiani Hatta, Sugiarto Sugiarto

Jurnal Ilmu Ternak Universitas Padjadjaran

Abstract

Feed plays an important role in livestock metabolism, especially to support growth, maintain body condition, and production. Therefore, efforts are needed to find high-quality feed ingredients that are easy to obtain, sustainably available, do not compete with human needs, are non-toxic, and economical. One alternative feed ingredient that can be optimized to reduce feed costs is industrial waste, such as coconut meal and palm kernel meal. This research was conducted at the Laboratory of the Faculty of Animal Husbandry and Fisheries, Tadulako University, Palu, for five weeks, namely from March 19, 2022 to May 20, 2022. A total of …

Crisis In The Regeneration Of Livestock Workforce, Analysis Of Factors Affecting Young Generation's Interest In The Livestock Sector, Taufik Khaliq, Irma Susanti S, Ruth Dameria Haloho, Adli Putra Ermanda

Jurnal Ilmu Ternak Universitas Padjadjaran

The purpose of this research is to analyze the factors affecting the interest of the young generation in the livestock sector. The research was conducted in the province of West Sulawesi, using a sample of 230 people selected through purposive sampling. Instrument testing used the Pearson product-moment and Alpha Cronbach. Data analysis used multiple linear regression, with variables consisting of independent variables: social factors (X1), economic factors (X2), government role (X3), demographics (X4), information access (X5), and technology support (X6), with the dependent variable being interest in working in the livestock sector (Y). The results of this study indicate that …

A Meta-Analysis On The Effect Of Oil Palm Fronds As Small Ruminant Feed, Fenda Fhonna, Samadi Samadi, Anuraga Jayanegara, Sitti Wajizah

Jurnal Ilmu Ternak Universitas Padjadjaran

Oil Palm fronds (OPF) as the main waste of oil palm plantations have considerable promise as a small ruminant feed. Unfortunately, due to the diversity of previous findings, a clear response pattern has still to be determined. For this reason, in the present study, meta-analysis was employed to synthesize existing findings regarding the effect of OPF as a small ruminant feed. The database was constructed using data from ten published articles that fit the inclusion criteria. The applied statistical model was a mixed model. Findings revealed no significant effect (P>0.05) of OPF inclusion on nutrient intake, nutrient digestibility, animal …

Effect Of Cassava Flour Ratios And Binder Levels On Nutritions And Physical Properties Of Pellets Made From Calliandra And Lamtoro, Budi Ayuningsih, Iin Susilawati, Nyimas Popi Indriani, Arkan Usamah

Jurnal Ilmu Ternak Universitas Padjadjaran

Abstract

Feed in the form of pellets is one form of preservation of feedstuffs that is more guaranteed in terms of procurement and continuity of supply to maintain feed quality. This study aims to determine the effect of the level of cassava flour in pellets of calliandra and lamtoro mixture as a binder on physical properties and on the content of dry matter, organic matter, and crude protein. The study used an experimental method with a completely randomized design (CRD) with 4 treatments and 5 replications. The treatments consisted of P0 (100% mixture of calliandra and lamtoro + 0% cassava …

Study Of Fermentation Of Lemongrass Waste (Cymbopogon Nardus), Rice Bran And Corn Fraction With Pleurotus Ostreatus On Fiber Fraction And Digestion Of Dry Matter, Organic Matter, And Crude Protein, Yuliaty Nur, Arfa`I Arfa`I

Jurnal Ilmu Ternak Universitas Padjadjaran

Lemongrass waste can be used as an alternative feed to replace grass for ruminant livestock, but it has a high crude fiber content. Therefore, it is necessary to handle and process lemongrass waste. This study examines the effect of inoculum dose and fermentation time of lemongrass waste (Cymbopogon nardus) with Pleurotus ostreatus on fiber fraction, dry matter digestibility, organic matter, crude protein. The research method is a randomized block design consisting of 6 treatments of lemongrass waste with rice bran and corn shards and 3 replications as a group. The inoculum dose is 6%, 9% and 12% and …

Growth Curve Modeling Of Garut Sheep At Uptd-Bpptdk Margawati Garut, Hana Nurlela, Heni Indrijani, Denie Heriyadi

Jurnal Ilmu Ternak Universitas Padjadjaran

Growth curves can be used to reflect changes in the body structure due to genetic and environmental responses. Here, six growth curve models are used: Gompertz, Logistic, Richard, Von Bertalanffy, Morgan-Mercer-Flodin (MMF), and Weibull models. This study aims to determine patterns and growth as seen from changes in ages and weights of male and female Garut sheep at UPTD-BPPTDK Margawati Garut. The case study method was used with 214 samples. Data from samples were processed to find similarities and curve shapes and the data was examined using Curve Expert software. The results showed that each parameter measured has a sigmoid …

Estimation Of Equations Cost Model For Rearing Replacement Dairy Cows., Melinda Arifin, Muhammad Hadiana, Cecep Firmansyah, Andre Daud

Jurnal Ilmu Ternak Universitas Padjadjaran

A research was conducted to generate a mathematical model for estimating the rearing cost of replacement dairy cattle. This research uses a survey method to collect data regarding farmer expenditures in raising young dairy cattle. Data collection involved 67 farmer who kept 231 replacement dairy cows with various ages, from birth up to two years of age. Data analysis used linear regression to estimate an equation model for describe a causal relationship between the partial total cost (TCp) with the period of rearing the cattle (q). The analysis performs two model equation namely quadratic and cubic cost function. The second …

The Effect Of Stocking Density On Carcass Weight, Carcass Parts, And Carcass Percentage Of Broiler Chickens In Closed-House, Resa Dewi, Iwan Setiawan, Wendry Setiyadi Putranto

Jurnal Ilmu Ternak Universitas Padjadjaran

This research examined the effect of different densities on carcass weight, carcass parts, and carcass percentage. The material used in this research was 200 broiler chickens aged three weeks, reared for 14 days until they were 35 days old. The experimental design used was a Completely Randomized Design (CRD) consisting of 5 treatments and four replications. If the analysis of variance showed an effect of treatment (P<0,05), then Duncan's Multiple Range Test was carried out to determine the effect between treatments. The treatments used were P1 = density of 13 birds/m², P2 = density of 14 birds/m², P3 = density of 15 birds/m², P4 = density of 16 birds/m², and P5 = density of 17 birds/m². The study found that density had no significant effect (P>0,05) on the carcass weight, carcass parts, and carcass percentage. Based on the research results, it can be concluded that a density of 16 birds/m² for broiler chickens kept in closed houses still …

Evaluation Of Semen Quality And Estimation Of Semen Repeatability Value Of Madura Bulls At Lembang Artificial Insemination Center, Ema Wigiyanti, Heni Indrijani, Siti Darodjah, Asep Kurnia

Jurnal Ilmu Ternak Universitas Padjadjaran

Madura bull are one of the local bulls in Indonesia whose semen is used for artificial insemination. This study aims to evaluate the quality of semen and the repeatability value of semen from Madura bulls at the Lembang Artificial Insemination Center. A total of 1,402 semen collection data from three Madura bulls from 2014-2020 were used for analysis. The data was analyzed descriptively to evaluate semen quality consisting of semen volume, sperm motility and sperm concentration. Repeatability value was estimated using analysis of variance and intra-class correlation. The results showed that the average volume, motility, and concentration were 5.32 ± …

The Role Of Social Media In Mastering Broiler Livestock Management, Muhamad Ramdani, Anie Kusumastuti, Puji Akhiroh

Jurnal Ilmu Ternak Universitas Padjadjaran

Social media has experienced rapid development and has had a significant impact on various aspects of life, including the broiler livestock industry. Social media plays an important role in increasing the practical skills needed for effective broiler livestock raising management, including playing a role in providing easy and fast access to information, education, and interaction between individuals. This research aimed to analyze the influence of social media roles as an information medium, educational medium, and networking & communication medium for mastering broiler management. The research method used a quantitative approach using a survey method. Data were collected through direct interviews …

Utilization Of Kepel (Stelechocarpus Burahol) Leaf Extract As A Feed Additive In Broiler Chicken Feed, Adi Mustawa, Tuti Widjastuti, Denny Rusmana

Jurnal Ilmu Ternak Universitas Padjadjaran

This study aims to determine the best level of Kepel leaf extract (Stelechocarpus burahol) used in feeds based on the amount of Escherichia coli in excreta, ileal villi, protein digestibility, ration consumption, and body weight gain (BWG) of broiler chickens. The research was conducted experimentally using a completely randomized design (CRD), four levels of Kepel leaf extract in rations repeated five times. The Kepel leaf extract (EDK) levels used consisted of P ₀ = basal ration, P ₁ = P ₀ + 0.15% EDK, P ₂ = P ₀ + 0.30% EDK and P ₃ = P _{0 …}

Farm Resources Utilization On The Integrated System Of Bali Cattle-Palm Oil, Ibarahim, Muhammad Hadiana

Jurnal Ilmu Ternak Universitas Padjadjaran

A study on cattle-oil palm integrated farms aimed to identify the level of utilization of farmer resources, and the technical efficiency at the individual level compared to its best potential achievement (frontier production). Observations were conducted on 152 farmers in four sub-districts in Paser Regency, East Borneo. They were randomly selected in two stages: (1) choosing a farmer group, and (2) choosing farmers from the selected group. Model the causal relationship between resource utilization and output of mixed farming using the Cobb-Douglas equation. Regression analysis was used to estimate the degree of technical efficiency ratio using the stochastic frontier analysis. …

Performa Ternak Dan Kurva Pertumbuhan Bobot Badan Galur Ayam Sentul Warna Bulu Debu Dan Kelabu Di Bppt Unggas Jatiwangi, Maya Fitriati, Heni Indrijani, Tuti Widjastuti

Jurnal Ilmu Ternak Universitas Padjadjaran

Salah satu sumber daya genetik di Indonesia untuk mendukung kemandirian penyediaan pangan sebagai sumber protein hewani nasional adalah ayam lokal. Penelitian ini memiliki tujuan untuk mengetahui tentang konsumsi ransum, konversi ransum serta kurva pertumbuhan bobot badan ayam Sentul Debu dan Kelabu di BPPTU Jatiwangi. Penelitian menggunakan metode deskriptif kuantitatif di BPPTU Jatiwangi selama 12 minggu. Pada penelitian ini digunakan DOC (day old chick) ayam Sentul Debu 121 ekor dan DOC ayam Sentul Kelabu 124 ekor, yang dipelihara di kandang postal. Penimbangan bobot badan dilakukan mulai dari umur 1-12 minggu. Hasil penelitian ayam Sentul Debu menunjukkan rataan konsumsi ransum …