bluuebunny/crossref_metadata_2025 huggingface dataset:
Pattern of Urinary Stone Disease among Armed Forces Personnel - A Cross Sectional Study of 223 cases
Authors: Rakib Md Abdur , Chowdhury Md Ashif , Alam Md Shafiul
Published: January 2025

Introduction: Urinary stone disease is one of the common disease entities with higher male preponderance seen in urological practice. Though etiology of urinary stone disease is not well understood but some precipitating factors like urinary infection, less fluid intake, dietary habit and metabolic factors has been observed common among the members of Armed forces personnel. They are having common supplied food items with prolonged exposure to precipitating factors of stone formation. This observation leads to inference this study to see the distribution of urinary stones among the members of Armed forces personnel.
Materials and Methods: This is a Cross-sectional study. A total of 223 patients diagnosed with urinary stone diseases and managed in Urology Center of Combined Military Hospital (CMH) Dhaka from 01 June 2022 to 30 June 2023 were included. The data was collected in a data collection sheet from hospital records. The data was entered into the Microsoft Excel software and analyzed using statistical package for social studies (SPSS) software 23.0 version.
Results: Among 223 patients 182 patients were male and 41 were female and male female ratio was 4:1. Age range found from 8 years to 81 years, with a mean of 40.99 years. According to location of stone the most common site was ureter, followed by Kidney. The highest incidence of stone disease was found in the summer months (May - July).
Conclusion: Urinary stones are predominantly found in male. Upper tract stone is more common than lower tract. During summer (May - July) more urinary stone disease found among armed forces personnel.
Bangladesh J. Urol. 2023; 26(2): 104-109
Successful Management of Cyanosis Due to Tongue Fall Back of 17 Days Newborn with Cleft Palate: A Case Report
Authors: Kamrul Hasan Md , Farid Uddin ABM , Alam Chowdhury Dilruba
Published: January 2025

Background: Cleft Lip and Palate (CLP) are one of the most frequently occurring craniofacial congenital anomalies. Itimpairs an individual's aesthetics, speech, hearing, and psychological and social life. Respiratory difficulty and feeding problems are the primary concern of cleft palate newborns. Case Presentation: A 17-day-old newborn presented to the Neonatal Intensive Care Unit on 10 January 2023 with difficulty in respiration and causes nasal regurgitation. Then the patient was referred to dental OPD to place a palatal device/obturator. The case presented here discusses the management of breathing problems to halt cyanosis in a neonate with a cleft palate. Conclusion: Another immediate problem for a newborn with a cleft lip/palate is difficulty in feeding. After adjusting an obturator to the patient’s mouth, she recovered from cyanosis. Currently, she is pretty comfortable in respiration as well as feeding.
Chatt Maa Shi Hosp Med Coll J; Vol.23 (1); January 2024; Page 104-107
Australian Gonococcal Surveillance Program, 1 January to 31 March 2024
Authors:   National Neisseria Network, Lahra Monica M , Van Hal Sebastiaan , Hutabarat Sonya Natasha , Hogan Tiffany R
Published: January 2025

The Australian National Neisseria Network (NNN) comprises reference laboratories in each state and territory that report data on antimicrobial susceptibility testing to an agreed group of antimicrobial agents for the Australian Gonococcal Surveillance Programme (AGSP). The AGSP data are presented quarterly in tabulated form, as well as in the AGSP annual report. This report presents national gonococcal antimicrobial resistance surveillance data from 1 January to 31 March 2024.
Emergence of locally acquired Japanese encephalitis virus in Australia, January 2021–June 2022: a national case series
Authors: Reyes Veliz Amanda , Kane Stacey , Glynn-Robinson Anna
Published: January 2025

(Background and methods): In March 2022, an outbreak of Japanese encephalitis virus (JEV) infection was identified in temperate south-eastern Australia, with detections in humans and animals. The unexpected emergence of JEV prompted a national public health response and a Communicable Disease Incident of National Significance was declared. JEV has previously only been identified in tropical north-eastern Australia in localised outbreaks. This article provides a descriptive analysis of the human case epidemiology of the national outbreak from 1 January 2021 to 30 June 2022. (Results): There were 42 confirmed and probable human cases of JEV identified as acquired in Australia between 1 January 2021 and 30 June 2022. Seven deaths occurred (case fatality rate: 17%). Cases were identified in five Australian jurisdictions (New South Wales, Victoria, Queensland, South Australia and the Northern Territory). The majority of cases were aged 60 years and over (55%; 23/42), with a median age of 61.5 years (range: 0–79 years; interquartile range: 45–70 years); cases were predominantly of non-Indigenous status (90%; 38/42). Sixty-seven percent (28/42) were male. Of the cases with geographical data available (n = 41), all were likely exposed to the virus in 31 unique local government areas across regional and remote Australia. (Conclusions): Cases were detected across Australia in five jurisdictions, requiring a national public health response, to detect and prevent further cases. There was widespread geographical distribution over 18 months. Given the risk of further cases and possible endemicity of JEV being established in Australia, expanded environmental and human surveillance programs are required.
Exploring the Link: A Study of Secondary School English Language Teachers' Perceived and Actual Reading Skills Proficiency
Authors: Mengistie Seyoum Tesfaye
Published: January 2025

Reading is the most important skills in language learning and teaching. This study aims at identifying secondary school English language teachers’ perceived and actual reading proficiency level and the correlation between these variables. The researchers employed mixed methods design and used questionnaire, proficiency test and interview to collect data from the participants. There were 112 secondary school teachers who take part in this study and among them four teachers were interviewed. The data gathered from the instruments were analyzed using SPSS version 24 for the quantitative and NVivo version 10 for the qualitative data. The results of this study revealed that secondary school English language teachers perceived proficiency level of reading skill was high. The proficiency test revealed that the levels secondary school English language teachers actual reading skills was medium. It was also found that there was a positive (r=.329) but not significant correlation between the teachers’ perceived and actual proficiency level of reading skills. The results indicated that teachers thought they had high proficiency level but their actual reading proficiency was not equivalent with their perceptions. This implies that there should be professional and skill development trainings given for the teachers. Besides, teachers should make themselves familiar with reading materials apart from the text book they are using in the classroom.
Trends and Innovation in Digital Reading Assessment: A Decade of Bibliometric Insights
Authors: Saputra Wendi , Cahyani Isah , Sastromiharjo Andoyo
Published: January 2025

The digitalization of reading assessment has become inevitable. The emergence of technology in reading assessment should be seen as an opportunity to improve the quality of students' reading. This study aims to compile various research conducted on digital reading assessment. The method used in this research is a literature review, where the researcher gathers information through literature studies including books, articles, research findings, and others. The researcher then analyzes the collected data using bibliometric analysis. Bibliometric analysis is an approach that employs a range of quantitative methods to measure, analyze, and track scientific literature. The results of this research found 29 articles related to digital-based reading assessment from 2013 to 2023. After analysis, several topics were frequently discussed in these articles, including assessment, computer-based assessment, technology, online testing, and open book. However, there are still some topics that need further development, such as computation design, reading comprehension assessment, cooperative/collaborative learning, and active reading. This research will be highly beneficial for researchers looking to develop digital reading assessments, ensuring that this form of assessment advances in the future and produces the best digital-based reading evaluations.
Enhancing EFL Students’ Writing Skills: The Impact of Deepl Translation
Authors: Payung Naftalia Fany , Sukarno Sukarno
Published: January 2025

The integration of the DeepL translation tool as a method to enhance students' writing skills in EFL classrooms holds great potential. Its capability to provide accurate, context-sensitive translations can aid students in expanding their vocabulary and understanding sentence structures. This study investigated the impact of using DeepL translation on EFL learners’ writing proficiency through an experimental approach. Two groups of senior high school students participated: an experimental group utilizing DeepL as a writing aid and a control group that did not. Both groups underwent pre-tests and post-tests to evaluate the effectiveness of the intervention. Conducted during the second semester of the 2023/2024 academic year, the quasi-experimental study involved 20 students as subjects. Data collection methods included tests focused on descriptive text writing and a questionnaire to gauge students’ responses. Instrument validity and reliability were verified, and the data were analyzed using SPSS 25.0. The findings revealed a significant improvement in the writing skills of students in both groups, indicating that while DeepL translation played a role in enhancing writing proficiency, other factors also contributed. Notably, the experimental group demonstrated a greater improvement compared to the control group, suggesting that DeepL translation provided a unique advantage. However, the results also highlighted the importance of combining digital tools like DeepL with effective teaching strategies to optimize learning outcomes. Overall, the study underscores the value of integrating technology in EFL classrooms while emphasizing the need for a holistic approach to writing instruction.
Exploring EFL Learning Barriers and Support Mechanisms of Indonesian Middle Socio-Economic Status Learners
Authors: Azzahra Jasmine Aussie , Purnawan Ari
Published: January 2025

A learner's EFL learning can be affected by various factors, one of which is socio-economic status (SES), with most Indonesians belonging to the middle SES. This study employs a case study approach and semi-structured interviews to explore the barriers faced by middle SES Indonesians in EFL learning and the potential support mechanisms. The findings reveal three key themes: support from surroundings, access to learning resources, and self-efficacy. Support from surroundings and resource access are interrelated external factors, highlighting the importance of ease of access in the learning environment. Conversely, self-efficacy reflects learners' internal beliefs in their ability to succeed in EFL. The study suggests several support mechanisms, such as providing equitable opportunities for practice, enhancing access to learning materials, and fostering a supportive educational environment. Resources like visual aids, culturally relevant materials, and free language platforms can significantly benefit not only middle SES learners but others as well. Despite these insights, the study has limitations, including reliance on interviews and a small participant pool of four graduates. Future research should utilize multiple instruments and larger, more diverse samples for stronger findings. The insights gained can inform policymakers, educators, and families in enhancing EFL implementation, emphasizing that support should also come from home. Implementing educational policies that address the needs of all socio-economic classes can make learning more relevant and engaging.
Enhancing English Literacy through Ethnopedagogy: A Focus on Cultural Relevance in Teaching Practices
Authors: Gumartifa Asti , Sofendi Sofendi , Mirizon Soni
Published: January 2025

Information and Communication Technology (ICT) provides digital media innovations to gain Literacy and understanding. In South Sumatra, the potential of local wisdom, such as folklore and traditional songs, highlights the importance of these elements in Ethnopedagogy and cultural preservation. The research provides contributions to both educators and learners. By incooperating ethnopedagogy into the learning materials, it can make teaching practice become more inclusive and enhance literacy in a culturally contextualized manner optimally. Therefore this study aims to enhance students’ English literacy by integrating Ethnopedagogy context throuh learning material, which emphasizes cultural relevance and teaching practices that also reflect students' cultural backgrounds. This study employs a descriptive qualitative methodology to explore the enhancement of English literacy through Ethnopedagogy. Data were collected through a literature review. The qualitative approach facilitated an in-depth analysis of how cultural relevance and effective teaching practices can improve English literacy education. This study investigates the integration of cultural contexts into Literacy Instruction. The study then addresses the role of cultural identity in literacy achievement. The research further explores challenges and solutions in culturally relevant literacy instruction. The findings underscore the significance of incorporating local wisdom and cultural elements in developing effective English literacy programs that resonate with students' cultural backgrounds and enhance their learning experiences.
The Effect of Estacoll and Reading Habit on the Eleventh Grade Students’ Writing Recount Text: A Lesson Learned from Private Schools
Authors: Ilahi Rahma Kurnia , Amna Fitra Afrida
Published: January 2025

Writing is a crucial skill that students need to develop. In the process of writing, both writing techniques and reading habits play significant roles in shaping students' writing abilities. Therefore, selecting an appropriate teaching method is essential. The Estacoll technique can be employed as an alternative approach in teaching writing. This study aimed to examine the impact of the Estacoll technique on students' ability to write recount texts. The research utilized a quasi-experimental design, targeting eleventh-grade students in senior high schools. Two classes were randomly selected as the study sample. During the intervention, the experimental group was taught using the Estacoll technique, while the control group participated in small group discussions. The objective was to enhance the recount text writing skills of eleventh-grade students through the application of the Estacoll technique. This method serves as a strategy to improve students' knowledge and ability to produce well-structured recount texts. The study employed quasi-experimental methods, collecting data through writing tests and questionnaires. Statistical analysis was conducted using a t-test to evaluate the results. The data analysis aimed to demonstrate the effect of the Estacoll technique and reading habits on the recount text writing skills of eleventh-grade students. The findings revealed significant differences in students' writing abilities after the application of the Estacoll technique. In conclusion, this research highlights the potential of the Estacoll technique to offer students more opportunities to enhance their writing skills.
Investigating Teaching-Learning Strategies in Improving EFL Learners’ Reading Comprehension: A Lesson Learned from Junior High Schools
Authors: Asnawi Asnawi , Sinaga Yanti Kristina , Herman Herman , Sianturi Beata Klarensya , Kartolo Rahmat , Tannuary Arwin
Published: January 2025

This study investigates the implementation of teaching strategies to improve reading comprehension among eighth-grade students in Indonesian junior high schools, where English is treated as a foreign language. Limited exposure and practice outside the classroom contribute to underwhelming reading proficiency. The research adopts a qualitative case study approach involving two English teachers and eighth-grade students. Data collection methods include observations, interviews, and documentation, while analysis is conducted using Miles and Hubberman’s interactive model. Findings reveal that teachers employ two primary strategies for teaching descriptive text comprehension: Think Aloud and Question Answer Relationships (QARs). The Think Aloud strategy involves guiding students to set reading purposes and make predictions during the pre-reading stage. During reading, students identify key information, resolve unfamiliar vocabulary, and make connections across texts. Post-reading activities include summarizing, evaluating comprehension through performance, and formative assessments. QARs strategy focuses on building background knowledge before reading. Teachers introduce four types of questions – Right There, Think and Search, Author and Me, and On My Own – to guide text interpretation during reading. Reflection and comprehension tests, such as worksheets, are conducted post-reading to assess learning outcomes. The study highlights the effectiveness of interactive and structured approaches in fostering deeper engagement and improving students’ reading comprehension abilities. These strategies offer practical insights for educators seeking to enhance reading proficiency through targeted interventions.
Amelioration in Indonesian Classics: A Corpus Analysis of Concrete Nouns in Indonesian Literary Works
Authors: Lubis Nurhabibah , Ermanto Ermanto
Published: January 2025

This research analyzes the phenomenon of amelioration on concrete nouns in the novels Layar Terkembang by Sutan Takdir Alisjahbana and Sitti Nurbaya by Marah Roesli. Amelioration is the process of changing the meaning of a word that leads to a more positive connotation. The purpose of this study is to identify the forms of amelioration, the positive connotations formed, and how these changes in meaning reflect the social and cultural context of colonial Indonesia. The research method used is corpus linguistics with documentation techniques through the KORTARA (Korpus Nusantara) application to identify frequency patterns and word collocation in literary texts. The results showed that there were 57 words undergoing amelioration that reflected changes in social views, culture, and religious values. For example, the word "khalikulalam" in Sitti Nurbaya's novel has undergone improvements, a shift in meaning that increases its value and respect; The word "virgin" in the novel Layar Terkembang carries a more subtle and respectful connotation, describing a young woman who is seen not only by her status but also associated with beauty, purity. The words not only have basic meanings, but also additional connotations that symbolize respect, sanctity, spiritual power, and cultural pride. The amelioration of these concrete nouns shows the changes in colonial society's perspective towards social roles and cultural values in daily life. The findings support the theory that amelioration is closely related to broader social dynamics, where words with high moral and cultural values tend to experience an increase in meaning. This research is expected to contribute to the study of Indonesian linguistics and semantic education, as well as add to the understanding of the interaction between language and social values in society.
Developing Kemukus Mountain Flipbook Integrated with TaRL Approach in Improving Students’ Comprehension of Descriptive Texts
Authors: Setiyani Tasya Novi , Purwati Panca Dewi
Published: January 2025

Teachers have not optimally used technology-based learning media and have not implemented a Teaching at the Right Level-based learning approach. causing students' understanding of descriptive text to be low. This study aims to develop, test the feasibility, and effectiveness of Teaching at the Right Level-based flipbook learning media to improve the understanding of fifth grade students. This type of research is research and development with the Borg and Gall model. The subjects of this study were 30 fifth grade Elementary students. Data collection techniques used tests (pretest and posttest) and non-tests (observation, interview, questionnaire). Data analysis techniques using normality test, t test and N-Gain test. The results showed: (1) Teaching at the Right Level-based flipbooks were developed using the canva application; (2) the results of the validity test of material experts, media experts, teachers, and students received a very feasible category; (3) effectiveness is shown from the results of analy-ing pretest and posttest scores. The results of the t test get a sig. (2-tailed) value of 0.00 <0.005. The conclusion in this studv shows that the development of learning media flipbooks based on Teaching at the Right Level was successfully developed, very feasible, and effectively used to improve the understanding of descriptive text for fifth grade Elementary students.
Positioning in News Translation Regarding Hamas: A Parallel Corpus-Based Approach
Authors: Ar Rusyfa Imamati Zikra , Datang Frans Asisi , Junaidi Junaidi
Published: January 2025

Translating news reports can hardly be free from subjectivity, especially in relation to a conflict, since the opposing ideology often creates friction that necessitates translators to assume complex and multifaceted roles. The concept of positioning refers to participants’ attitudes or stances toward the event or other participants in the event which significantly influences the interpretation of a text. The objective of this study is to examine the positioning regarding Hamas in a parallel corpus-based Israel-Palestine conflict. The corpus comprises 160 articles that have been translated from English to Indonesian. The researcher applied the evaluative model proposed by Pan and Liao (2020), that integrated CDA (Fairclough, 2013), Appraisal Theory (Martin & White, 2005), and Narrative Theory (Baker, 2006). It was found that the translators intentionally and carefully (re)positioned of Hamas by implementing a discursive strategy called redacted labelling in their actual activities. This can be done by omitting, adding, softening, and even strengthening the word construction embedded in these elements. The activities were motivated by the political stance of the news organization as determined by its official identity, media discourse counterpoints, the situation of the political of Indonesia toward the conflict, and their expectations of the reaction of the target audience. Examining news translation using CDA adds to translation theory by providing a critical perspective on how non-linguistic elements like ideology, power, and culture influence the translation process. It provides a more in-depth understanding of the translator's position as an agent who translates meanings, values, and worldviews as well as words.
Perancangan Sistem Pendukung Keputusan Dalam Mendukung Pemasaran Proyek Pembangunan Perumahan Pada Perusahaan Kartajasa.Art
Authors: Sabir Fitriana M , Nurzaenab Nurzaenab , Asrul Asrul , Awaliah Neneng , Maslihatin Tatik , Nasaruddin Ayu Pertiwi
Published: January 2025

Penggunaan Multi-Criteria Decision Making (MCDM) dalam pemasaran proyek pembangunan perumahan pada perusahaan Kartajasa.Art dapat membantu perusahaan dalam mengambil keputusan yang lebih akurat dan efektif dalam rangka memaksimalkan keuntungan dan mengurangi risiko kerugian. Berdasarkan yang telah diuraikan diatas, maka penelitian ini bertujuan untuk mengetahui bagaimana menjadikan Multi-Criteria Decision Making (MCDM)  dalam membantu pemasaran proyek pembangunan perumahan pada perusahaan Kartajasa.Art dan untuk mengetahui elektabilitas content management system dapat membantu perusahaan Kartajasa.Art untuk mengoptimalkan pemasaran proyek pembangunan perumahan. Metode yang digunakan adalah menghitung prioritas secara kuantitatif dengan Metode AHP (Analytical Hierarchy Process) dalam pemasaran proyek pembangunan perumahan. Berdasarkan hasil penelitian dan pembahasan yang telah diuraikan maka dapat disimpulkan bahwa Multi-Criteria Decision Making (MCDM) untuk memilih alternatif kriteria dalam mengembangkan sistem pemasaran pada perusahaaan Kartajasa.art telah berhasil dirancang. Sistem pendukung keputusan ini menerapkan sistem manajemen konten dalam membantu memasarkan beberapa kriteria yang ditentukan oleh perusahaan. Keputusan yang dihasilkan berdasarkan penentuan kriteria yang ditentukan oleh perusahaan yaitu memperoleh nilai akhir alternatif antara lain Segmentasi pasar dengan skor akhir 0,333, Penentuan Wilayah dengan skor akhir 0,229, Pengembangan Jaringan dengan skor akhir 0,248, Manajemen Tender dengan skor akhir 0,177 sehingga rangking pertama adalah Segmentasi Pasar dengan skor tertinggi 0,333. Berdasarkan hasil pengujian yang telah dilakukan maka, sistem dianggap sudah bebas dari kesalahan karena bekerja sesuai fungsionalnya. Saran untuk penelitian selanjutnya bisa menggunakan berbasis android atau ios.
Accelerating nephrogenetics: from gene discovery to clinical application
Authors:   , Claus Laura Regina
Published: January 2025

This thesis aimed to advance nephrogenetics research from fundamental discoveries
to clinical applications. First, it provides an overview of the current knowledge on genetic testing in monogenic kidney disease with a specific focus on copy number variants (CNVs). This thesis further highlights the importance of CNV analysis, which contributed to 10.5% of the diagnostic yield from genetic testing in patients with suspected monogenic kidney disease at the University Medical Centre Utrecht over an eight-year period. To improve the Dutch infrastructure for research on genetic kidney disease, the data- and biobank GeNepher was established, in which patients give broad consent for future research. Furthermore, to accelerate research into kidney gene discovery, a kidney-specific co-expression network was developed. This is an innovative tool that can predict and prioritize genes involved in kidney disease. With these resources in place, three (potential) new genetic causes of kidney disease were identified. The gene-disease association of heterozygous NEK8 variants with cystic kidney disease was discovered and TMEM72 and ALG6 were identified as novel ciliopathy candidate genes. Finally, this thesis demonstrates the benefits of adopting a genetics-first approach, exemplified by patients with medullary sponge kidneys who were diagnosed with primary distal renal tubular acidosis (dRTA), resulting in a genetic diagnosis that modified their treatment, and highlighting this underrecognized gene-disease association.
PENGARUH PENGGUNAAN CACAHAN GELAS PLASTIK POLYPROPYLENE (PP) TERHADAP KUAT TEKAN DAN KUAT TARIK BETON
Authors: Ridwan Fitroh Fauzi , Subari Subari , Yulius Elma
Published: January 2025

Plastik merupakan salah satu jenis sampah anorganik yang mana tidak semua dari material jenis ini dapat didaur ulang. Gelas plastik bekas/polypropylene (PP) merupakan salah satu jenis plastik yang tidak dapat didaur ulang dengan mudah. Pemanfaatan limbah gelas plastik bekas/polyropylene (PP) dalam campuran beton salah satunya untuk meningkatkan mutu beton, mengurangi limbah plastik. Serta memelajari potensi akan penggunaan cacahan limbah gelas plastik/polypropylene (PP) sebagai bahan tambah dalam campuran beton terhadap kuat tekan dan kuat tarik beton. Penelitian dilakukan di Laboratorium Teknik Sipil Universitas Islam “45” Bekasi. Pedoman penelitian ini mengacu pada SNI (Standar Nasional Indonesia) dan JIS (Japan Industrial Standard). Mutu beton K-225 dengan persentase penambahan cacahan gelas plastik bekas/polypropylene sebesar 0,00%, 0,50%, 0,75%, 1,00%, dan 1,25% dari berat semen, pengujian kuat tekan beton dilakukan pada umur 7 hari, 14 hari dan 28 hari. Sedangkan, pengujian kuat tarik dilakukan pada umur 28 hari. Dari hasil pengujian didapat kuat tekan beton pada umur 28 hari terjadi penurunan kuat tekan sebesar 4,982% pada persentase campuran polypropylene 0,50%, 14,765% pada persentase campuran polypropolyne 0,75%, 16,214% pada persentase campuran polypropylene 1,00%, dan 22,826% pada persentase campuran polypropylene 1,25% terhadap beton normal. Sedangkan hasil pengujian kuat tarik umur 28 hari terjadi peningkatan optimum sebesar 21,789% pada persentase campuran polypropylene 0,50% terhadap mutu beton yang dicapai.
Kata kunci : Beton, polypropylene, berat semen, kuat tekan, kuat tarik.
PEMETAAN JARINGAN IRIGASI DAERAH JAWA BARAT BERBASIS SISTEM INFORMASI GEOGRAFIS (SIG)
Authors: Oktavianti Oktavianti , Subari Subari , Yulius Elma
Published: January 2025

Jawa Barat dikenal sebagai daerah yang berperan penting dalam produksi pertanian di Indonesia, hampir 23% dari 29,3 ribu km persegi tanah di Jawa Barat merupakan persawahan. Pengembangan dan pemeliharaan padi sawah di Jawa Barat tergantung dari ketersediaan air di irigasi dan kondisi jaringan sehingga dibutuhkan data tentang kondisi jaringan irigasi dan informasi terkait yang diperlukan. Maka dari itu dibuat pemetaan Jaringan Irigasi berbasis SIG untuk mendukung kebutuhan data. Pengumpulan data, yaitu: data tersier (penelusuran dengan tracking GPS serta wawancara) dan data sekunder, pengolahan data analisa berdasarkan parameter pembobotan. Pengolahan data spasial, data spasial ditampilkan dengan konsep layer dan atribut. Daerah irigasi yang berada di Provinsi Jawa Barat dari total 27 kabupaten/kota sebanyak 16 kabupaten/kota yang berhasil diamati, dari sebanyak 855 daerah irigasi yang menyebar di kabupaten/kota di Jawa Barat sebanyak sebanyak 151 daerah irigasi (18%) dalam kondisi sangat baik, 157 daerah irigasi (18%) kondisi baik, 256 daerah irigasi (30%) kondisi kurang dan sisanya 291 daerah irigasi (34%) dalam kondisi sangat kurang.
Kata Kunci : Sistem Informasi Geografis, Kondisi Irigasi, Saluran Irigasi tersier, GPS.
UJI COBA PENGGUNAAN SABUT KELAPA SEBAGAI PAPAN SERAT
Authors: Paryati Ninik
Published: January 2025

Perkembangan konstruksi yang sangat pesat, namun harga material bangunan juga semakin mahal, sehingga diperlukan material alternatif yang murah dan dapat digunakan sebagai bahan konstruksi seperti sabut kelapa sebagai bahan untuk membuat papan serat semen. Papan serat semen adalah papan tiruan yang menggunakan semen sebagai perekatnya sedangkan bahan bakunya berupa serat-serat. Papan serat yang digunakan dalam penelitian ini terdiri dari semen, sabut kelapa dan air dengan variasi 25%,50%,75% terhadap berat semen. Pengujian dilakukan setelah papan serat berusia 28 hari. Adapun jenis pengujiannya terdiri dari; Pengujian kuat tarik sabut kelapa, penyerapan air kerapatan, kadar air, pemuaian dan pengembangan tebal serta Keteguhan Lentur Modulus Patah (KLMP). Hasil penelitian ini menunjukkan bahwa papan serat tergolong dalam papan serat proses basah dengan kuat tarik sabut kelapa rata-rata 17.20 kg/cm2, termasuk papan serat tipe 1 20, jenis PSKT ( Papan Serat Kerapatan Tinggi) dan tidak terjadi pemuaian pada papan sehingga layak digunakan sebagai bahan konstruksi.
Kata Kunci : Papan Serat, Kuat Tarik Sabut Kelapa, Penyerapan Air, Kerapatan, Keteguhan Lentur Modulus Patah
Effect of Nonuniform Foundation Support on Concrete Slab Responses
Authors: Brand Alexander S. , Roesler Jeffrey R.
Published: January 2025

The ability to spatially map the stiffness of the foundation layers under concrete pavements with intelligent compaction has created a need to define limits on the allowable stiffness variations in a given construction area as well as the maximum size of a non-complaint area which does not require remedial action. In order to work towards this goal, a two-dimensional finite element analysis was completed to determine the effects of four nonuniform subgrade support conditions (relative to uniform support) on the tensile stresses in a concrete slab under tandem axle loading and temperature curling. The slab responses showed that certain nonuniform subgrade support conditions have a greater impact on the slab tensile stresses relative to the uniform support irrespective if the slab is experiencing curling. A soft support along the longitudinal slab edge and a subgrade with randomly assigned 9 ft2 (0.84 m2) soft and stiff areas were found to decrease the slab performance relative to a uniform subgrade assumption. In the most extreme case, the nonuniform support with soft longitudinal edges had a maximum stress that was 63 percent greater than the uniform soft support. In this analysis, subgrade nonuniformities produced the potential for bottom-up or top-down fatigue cracking depending on the interaction of the axle location, temperature differential, and local support condition.
Design of Concrete Slabs with Optimized Geometry and Built-in Curling Effect on Performance
Authors: Covarrubias Juan Pablo
Published: January 2025

A new methodology called TCP “Thin Concrete Pavements” has been developed to design the concrete slab thickness by optimizing the slab size given the geometry of the truck axles. The key principle of the design method is to configure the slab size so that not more than one set of wheels are on any given slab at any time, thereby minimizing the critical top tensile stress. Full-scale test sections were constructed and tested at Illinois under accelerated pavement loading conditions with concrete thickness of 8, 15, and 20 cm on both an aggregate (Subbase CBR 4% and 15 cm granular base) and asphalt base layer. Concrete slabs 8 cm thick on a 15 cm granular base withstood 75.000 ESALS, Slabs with 15 cm thickness showed cracks initiating at 12 million ESALs on average. The 20 cm slab thickness showed no fatigue cracking. A Mechanistic-based software, “OptiPave”, has been developed. The new methodology designs slabs that are on average 7 cm thinner than traditional pavements, AASHTO (1993), for the same traffic, with a thickness range of 8 cm to 20 cm thick. This new solution for designing concrete pavements has been used to build roads from local streets to high traffic highways and gives an alternative to asphalt in low volume roads and competes directly in direct cost Thickness design in Chile is very sensitive to climate variables. The AASHTO 93 method doesn’t consider built in curling conditions, which is especially sensitive to construction standards, making this design variable (BIC) extremely important in terms of pavement performance. Two cases are studied in this paper to show the benefits of the optimized designed slabs, in terms of thickness and sensitivity to climate conditions.
Pavement Management: Key to Sustainable Concrete Pavement at the World’s Busiest Airport
Authors: Greer W. Charles , Kuchikulla Subash Reddy , Drinkard Jim
Published: January 2025

Hartsfield-Jackson Atlanta International Airport (ATL) is the busiest airport in the world in terms of passengers and aircraft operations. In 2010, it served more than 89 million passengers with 950,119 aircraft operations. Reliable performance with little down-time for its airfield pavements is critical for efficient, safe, and economical travel. Concrete pavements have long been the keystone of this capability at ATL. This paper presents the design, construction, maintenance, and evaluation procedures and activities that comprise the Pavement Management System (PMS) used at ATL to provide sustainable concrete pavements. The sustainability issues include long life pavements that have impacts far beyond those of the concrete pavement itself and the airport. Sustainable concrete pavements result in reduced down-time, fewer construction delays, less fuel used waiting for takeoff, and fewer materials consumed due to reduced frequency of construction/reconstruction and maintenance. These results help reduce the overall carbon footprint of the airport and its impact on the carbon footprint of other airports and aircraft operations throughout the worldwide air travel system.
Coupled Thermal and Moisture Modeling of Jointed Plain Concrete Pavements: A Sensitivity Study
Authors: Qin Yinghong , Hiller Jacob E.
Published: January 2025

This study outlines a coupled thermal and moisture transfer simulation model to simulate the environmental effects that impact a concrete pavement slab through its internal relative humidity (RH) profile. The model is validated by use of observed temperature and internal RH field data from an in-situ concrete pavement test section. A sensitivity simulation of this coupled model for arid region concrete slabs is conducted to better assess the impact of localized climatic factors such as wind speed, air RH, and local rainfall distribution on the concrete slab’s internal RH profile. Better understanding of the coupled effects of temperature and moisture will help improve predictions of critical concrete pavement factors such as moisture warping, differential drying shrinkage, chloride ion ingress, and other moisture durability-related concerns.
Pavement Life Cycle Cost Analysis Based on Hysteresis Data and Analysis of Fuel Consumption Measurements
Authors: Fäldner Leif , Lenngren C.A.
Published: January 2025

Higher investment costs for Portland cement concrete over asphalt concrete pave-ments is compensated by lower maintenance costs and a longer technical life. For sus-tainability reasons the less rolling resistance on the former pavement type is claimed to be another benefit. However, methods of measuring fuel consumption are difficult to carry out in a consistent manner. The present paper examines some fuel measure-ments and then uses the hysteresis method as a validation for some of the tests. The data are then used to determine the economical implications and life cycle cost analy-sis. The results support choosing Portland Cement Concrete for roads with high vol-ume truck traffic.
Prediction of Longitudinal Fatigue Cracking in Rigid Pavements using RadiCAL
Authors: Hiller Jacob E. , Signore James M. , Kannekanti Venkata , Basheer Imad , Harvey John T.
Published: January 2025

The capability of the software program RadiCAL to predict longitudinal fatigue cracking in jointed plain concrete pavements (JPCP) was studied to assess several sections in multiple climatic regions in California. RadiCAL fatigue cracking predictions were compared against measured distresses using the Caltrans’ pavement management system. Using this approach, RadiCAL was able to correctly predict zero or near-zero longitudinal cracking in newer JPCPs. The predictive performance for older JPCPs was variable and dependent upon defining proper input variables, including built-in curl and the concrete’s flexural strength. Issues such as random joint spacing and skewed joints complicated analyses for some sections as well. The challenges and solutions to using an existing pavement management system database for verification and eventual calibration are also described. This design verification stage of RadiCAL will help develop future versions of the software, as transfer functions between stress, damage, and cracking will be further enhanced to align with measured distresses in the state.
Experimental Investigation of Young Concrete Properties Needed for Proper Analysis of Concrete Pavements Behavior During the Hardening Process
Authors: Seruga Andrzej , Zych Mariusz , Politalski Wojciech
Published: January 2025

In this paper there are presented results of experimental investigation of young concrete properties. During design process of concrete structures there is used number of mechanical properties of concrete that are not normally part of the concrete specifications. Desirable values are often related to primary parameter of concrete – mean concrete compressive strength. Some of them are poorly or even not at all described at the very beginning of concrete maturing. This paper describes results obtained from common mechanical test of compressive and tensile strength, shrinkage strain and two author’s test dealing with creep under constant compressive and tensile stresses of young concrete and also temperature development in quasi-adiabatic conditions.
Distribution of Fiber-Reinforcement in Thin Concrete Overlays
Authors: Bordelon Amanda , Roesler Jeffrey
Published: January 2025

The spatial distribution and orientation of fibers in concrete materials can be linked with the measured fracture performance of the fiber-reinforced concrete (FRC). For FRC pavements, the improved toughness performance is used for adjusting the structural design and expected service life of the pavement. The prediction of toughness performance and pavement serviceability can be improved with a better characterization of fiber dispersion in the concrete pavement. In this research study, a flowable fibrous concrete (FFC) mixture was developed containing a synthetic macrofiber at a volume fraction higher than found with existing thin concrete pavements. This FFC mixture is anticipated to have greater toughness induced by more fiber alignment in a thinner (5 cm thickness) concrete inlay pavement. Quantification of synthetic fiber dispersion and alignment in the FFC mixture was made using x-ray computed tomography and imaging analyses. The influences of placement technique and proximity of cast or mold surfaces were investigated and found to impact the fiber spatial distribution and orientation. The image analysis revealed that the number of fibers crossing any vertical plane, which increased for FFC placed under directional flow, was directly related to the measured fracture performance. Fibers were verified to have the desired alignment, allowing more fibers to become engaged in crack opening resistance, when the FRC was placed as a thinner pavement layer and therefore resulting in a more cost-effective use of FRC for pavements.
Using Initiators In Portland Cement Concrete Pavements To Propagate Transverse Joint Cracking
Authors: Lim Malcolm , Gress David , Foster Peter
Published: January 2025

Past research on dowel bar placement has evaluated dowel bar misalignment relative to the saw cut at the top of the pavement. Determining misalignment measurements relative to the saw cut at the top of the pavement assumes that the crack propagates vertically downward immediately below the saw cut joint. This assumption is flawed although it is current practiced by the industry. Present detection methods cannot accurately determine the point at which the crack crosses the dowel bar. This study recognizes that there is not a technique to determine the path of the crack to measure the true misalignment but offers an alternative by dictating the crack path with cracking initiators attached to the dowel bars. Previous research has indicated that cracking initiators secured to the base of the pavement are ineffective or have little benefit due to the stress profile in the pavement slab. This study presents the results of work performed in dictating the path of a crack by attaching the crack initiator to the dowel bars. The results include utilizing different shape and size initiators. The work performed to date on crack initiation and the benefits attributed to utilization of crack initiator, including the ability to determine the true amount of misalignment are presented.
The Application of X-Ray Fluorescence to Assess Proportions of Fresh Concrete
Authors: Yurdakul Ezgi , Taylor Peter C. , Ceylan Halil
Published: January 2025

Any transportation infrastructure system is concerned with durability and performance issues. The proportioning and uniformity control of concrete mixtures are critical factors that directly affect the longevity and performance of concrete pavements. Currently, the only means available to monitor mix proportions of any batch are to track batch tickets created at the batch plant. This does not take into account potential errors in loading materials into storage silos, calibration errors, and addition of water after dispatch. Therefore, there is a need for a rapid, cost-effective, and reliable field test that estimates the proportions of as delivered concrete mixtures. In addition, performance based specifications will be more easily implemented if there were a way to readily demonstrate whether any given batch is similar to the proportions already accepted based on laboratory performance testing. This paper describes a preliminary investigation into the potential use of a portable x-ray fluorescence (XRF) technique to assess the proportions of concrete mixtures as they are delivered. Tests were conducted on the raw materials, paste and mortar samples using a portable XRF device. There is a reasonable correlation between the actual and calculated mix proportions of the paste samples, but data on mortar samples was less reliable.
Comparison of Setting Time Measured Using Ultrasonic Wave Propagation with Saw-Cutting Times on Pavements – A Case Study
Authors: Wang Xuhao , Taylor Peter , Wang Xin
Published: January 2025

At present, there is little solid guidance available to assist contractors in choosing when to schedule saw cutting of joints in slabs on grade. Knowledge of when the sawing window opens and closes would help in reducing the risk of raveling or random cracking due to sawing too early or too late. The aim of this case study was to confirm that initial set can be measured using an ultrasonic pulse velocity (UPV) approach in the field, and to assess whether there was a relationship between initial set and sawing time for pavement concrete in the field. This case study summarizes 24 construction sites that were visited in Minnesota, Missouri, and Iowa over a two-year period. At each site, initial set was determined using a p-wave propagation technique with a commercial device using samples of concrete collected in front of the paver and tested next to the pavement. Calorimetric data were collected using a commercial semi-adiabatic device on the majority of the sites.
Characterizing the Movement of Thin Concrete Overlay Panels Subject to Truck Loads
Authors: Burnham Thomas R. , Huerta Santiago B. , Barman Manik
Published: January 2025

The construction of thin concrete overlays as a pavement preservation option for both asphalt and concrete pavements is gaining popularity in the U.S. To reduce costs, as well as mitigate tendencies toward curling and warping, most thin bonded and unbonded concrete overlays are constructed with either smaller panels, or shorter length panels with undoweled transverse joints. Similar to undoweled concrete pavements on grade, thin undoweled concrete overlay projects have developed faulting of the transverse joints, sometimes at an early age. Toward the efforts to understand the mechanisms causing joint faulting in thin concrete overlays, this study sought to characterize the basic surface movements of thin overlay panels, including bending, translation, and joint load transfer, when subject to heavy vehicle loads. This study utilized digital image correlation (DIC) equipment to measure the dynamic displacement along the edge of thin bonded and unbonded concrete overlay panels loaded by heavy trucks. Testing showed that as the heavy front axle first lands on a thin overlay panel, localized bending is the predominant movement, regardless of panel length. For bonded concrete overlays on asphalt, most transverse joints did not show strong load transfer behavior, even when fiber-reinforced concrete was used. In addition to characterization of the panel surface movements, general correlation to observed joint faulting and panel distress was described. The findings from this study should serve useful to the continuing determination of the mechanisms causing joint faulting in thin concrete overlays