bluuebunny/crossref_metadata_2025_split huggingface dataset:
Investigating the Consolidation Behaviour of Cement-Bentonite Barrier Materials Containing PFA and GGBS
Authors: Walenna Muhammad A. 
Published: March 2023

Cement-Bentonite (CB) barriers are expected to become a sustainable and reliable engineering solution. The deformation of CB is of interest to engineers to comprehend, particularly how CB responds to changes in loading during its construction and service life. The purpose of this study was to examine how samples of CB mixtures behaved during consolidation. This study investigated: (1) the influence of curing time and constituent materials on the consolidation properties of CB samples, (2) the volumetric change and the rate of volumetric change in response to a specific loading condition via consolidation tests. For this purpose, a laboratory consolidation test with a load range of 50 to 3200 kPa was carried out in accordance with BS 1377-7:1990 using the oedometer apparatus. This study discovered that the consolidation characteristics of CB samples are similar to those of overconsolidated soil. The CB sample became more resistant to consolidation under varying loads as curing progressed. The presence of more bentonite resulted in an increase in the recompression index. The inclusion of GGBS contributed to the consolidation characteristics of CB through the following mechanisms: (1) the significant decrease of the degree of consolidation with a curing period longer than 28 days, despite the slow strength development of the early-age curing; (2) the increase of the preconsolidation pressure; and the addition of GGBS was found to be more effective than the addition of more bentonite in increasing the preconsolidation pressure. Doi: 10.28991/CEJ-2023-09-03-02 Full Text: PDF
Monitoring and Modelling Morphological Changes in Rivers Using RS and GIS Techniques
Authors: Abbass Zainab Dekan , Maatooq Jaafar S. , Al-Mukhtar Mustafa M. 
Published: March 2023

River geomorphological investigation issues have received little attention in most countries of the world. Such processes become a pressing necessity due to climate change and anticipated events of extraordinary surges and dry seasons, which may debilitate the security of adjacent and downstream cities, particularly in locales that are exceedingly delicate and influenced by climatic changes. Al-Abbasia reach is a river that runs through the middle of the Euphrates River and is known for its numerous bends and meanders. The study of hydraulic structures such as barrages can provide important information about their influences on morphological processes in river reaches near the barrage upstream and downstream. Hydraulic analysis is made of the river behavior in u/s and d/s of hydraulic structures like barrages as a result of sediment deposition and erosion in u/s and d/s. A study, i.e., research on the impacts of the Abbassia barrage on the river system, has been conducted to address this issue using multi-temporal Landsat satellite data from 1976 to 2022 provided by the USGS. The study reach is located 5 kilometres upstream and 5 kilometres downstream of the Abbassia reach. Following the construction of the barrage, which had an impact on the sedimentation and geometry of the river, morphological variations took place in this part of the Al Abbassia reach. In this study, morphological changes throughout 49 years between 1976 and 2022 were investigated utilising remote sensing (RS) and geographic information system (GIS) approaches. Additionally, four image groups from three separate decades were used to perform change detection (1990–2000, 2000–2010, and 2010–2022). In this study, a monitoring system using Landsat-3 MSS: 1985, Landsat-5 TM: 1990, 1995, 2000, 2005, and Landsat-8 OLI: 2010, 2011, 2015, 2021, 2022 were employed to map river planform changes. The long-term comparison of this series of satellite images and historical maps for the period 1976–2022 indicates a continuation of change in the reach study with a rate of approximately 56, 33, 97, and 55% for upstream and 19%, 26%, 3%, and 45% for downstream for the width, area, deposition, and erosion, respectively. Furthermore, it is observed that there is a shift in river course within 200 m downstream of the barrage for the period of 1985–1990. The findings of this study, which monitor river morphological change at finer temporal and spatial resolutions, are crucial for promoting sustainable river management. They also aid in the investigation of river behaviour, which is necessary for providing the best management possible and overcoming the difficulties posed by this important research issue. Doi: 10.28991/CEJ-2023-09-03-03 Full Text: PDF
Effect of Polypropylene Fibers on Swelling Potential and Shear Strength of Clay
Authors: Yacine Daksi M. , Madani Sid , Dib Mehdi 
Published: March 2023

Expansive clays can cause major problems for urban development (roads, railways, infrastructure, etc.); therefore, reducing the swelling potential of clays has always been a concern in the geotechnical field. The presented paper investigates the effect of polypropylene reinforcement fibers on the swelling potential and shear strength of clay. The samples studied were taken from the clayey region of Mila, located in the northern east of Algeria. The experimental procedure adopted in this research consists first of the assessment of the physical, mechanical, and mineralogical characteristics of the soil samples without reinforcement. Then, swelling pressure, swelling rate, and swelling index are used to assess the swelling potential of these samples. After the reinforcement using a variety of polypropylene fiber concentrations (2 to 6% of the weight of the dry clay), the free swelling is clearly reduced. The optimum reinforcement rate in this case is 4%, in which the swelling was reduced by 90.7%. Finally, to offer more insights regarding the impact of clay reinforcement using polypropylene fibers, the effect of this later on the mechanical properties of the studied clay was also analyzed through the tangential shear strength. It was found that the polypropylene fibers increased the tangential shear resistance of Mila’s clay. Doi: 10.28991/CEJ-2023-09-03-04 Full Text: PDF
Design of Controlled Pre-Split Blasting in a Hydroelectric Construction Project
Authors: Tahir Younes , Kadiri Imad , Fertahi Saïf Ed-dîn , El Youbi Mohammed , Bouferra Rachid , Agounoun Rachid , Dlimi M. 
Published: March 2023

Geologic conditions and design requirements around upstream Nachtigal Falls, in Cameroon, for the hydroelectric construction project on the Sanaga River dictated close control of blasting procedures with very precise geometry to obtain safe and economical excavation lines. Various techniques of pre-split blasting were used in the initial stage of all major excavations. Hole diameters for pre-splitting were 89 mm, and hole spacing ranged from 0.8 to 1m. Explosive charges varied from 1 to 7 kg per hole, and the detonating cord linear charge ranged from 12 to 60g. The contour blasting technique is aimed at controlling overbreak and improving remaining slope stability. Over-break or over-excavation needs to be controlled since its occurrence compromises the operations in terms of safety (instability in the remaining slope; loosening rocks that increase the risk for operational people; an irregular free face for subsequent blasting); and costs (need for reinforcement of the remaining rock structure through costly sustainment systems; increase in concrete volumes in civil works). This paper discusses in detail the design and field implementation of pre-split blasts successfully carried out to achieve clean vertical walls in moderately dipping, though complexly sheared and jointed gneiss. Based on the results of the experiments, we were able to design a pre-splitting pattern both experimentally and in a very cost-effective manner. It is felt that the methods developed on this project could have useful applications on other major construction projects. Doi: 10.28991/CEJ-2023-09-03-05 Full Text: PDF
Punching Capacity of UHPC Post Tensioned Flat Slabs with and Without Shear Reinforcement: An Experimental Study
Authors: Afifi Ahmed , Ramadan Mohamed , Maree Ahmed M. Farghal , Ebid Ahmed M. , Zaher Amr H. , Ors Dina M. 
Published: March 2023

Punching capacity is one of the main items in the design of both pre-stressed and non-pre-stressed flat slabs. All international design codes include provisions to prevent this type of failure. Unfortunately, there is no code provision for UHPC yet, and hence, the aim of this research is to experimentally investigate the impact of column dimensions and punching reinforcement on the punching capacity of post-tensioned slabs and compare the results with the international design codes’ provisions to evaluate its validity. The test program included five slabs with a compressive strength of 120 MPa: one as a control sample, two to study the effect of column size, and the last two to study the effect of punching reinforcement. Comparing the results with the design codes showed that ACI-318 is more accurate with an average deviation of about 5%, while EC2 is more conservative with an average deviation of about 20%. Besides that, punching reinforcement reduces the size of the punching wedge by increasing the crack angle to 28° instead of 22° for slabs without punching reinforcement. Also, the results assure that both ductility and stiffness are enhanced with the increased column dimensions and punching reinforcement ratio. Doi: 10.28991/CEJ-2023-09-03-06 Full Text: PDF
Labor Productivity Study in Construction Projects Viewed from Influence Factors
Authors: Latief Rusdi U. , Anditiaman N. M. , Rahim I. R. , Arifuddin R. , Tumpu M. 
Published: March 2023

Productivity is one of the fundamental factors affecting competitiveness in the construction industry. Construction and productivity are two things that are interrelated. This study aims to identify the factors and model relationship these factors that affect labor productivity using the Structural Equation Modelling (SEM) in road construction projects in Indonesia as seen from each side area I, II, and III, respectively. The results obtained the factors that influence labor productivity in road construction projects in Indonesia, namely field conditions, time, financial factors, and internal labor. The study's findings indicate that internal labor is one of the elements influencing labor productivity in Indonesian construction projects, particularly road maintenance work. Labor productivity research in Indonesia is conducted by comparing planned and realized labor productivity calculations, which are conducted by collecting project data and making firsthand observations of work in the field. Labor productivity is measured using characteristics other than the variables used in the research, as well as a larger population and sample coverage. The findings of this study can be utilized as input for government agencies in determining the ability of specialists to carry out work in the field connected to the preservation of non-structural flood handling roads on Indonesian territory. Doi: 10.28991/CEJ-2023-09-03-07 Full Text: PDF
Characterization of Groundwater Quality and Human Health Risk Assessment
Authors: Nguyen Thanh Giao , Huynh Nhien Thi Hong 
Published: March 2023

The study aimed to appraise groundwater quality in the Mekong Delta using a groundwater quality index (GWQI) and estimate human health risks associated with groundwater consumption. Groundwater samples were collected at sixty wells distributed in An Giang, Kien Giang, Hau Giang and Dong Thap provinces. Twelve water quality parameters were measured, including pH, total dissolved solids (TDS), hardness, coliform, nitrate (NO3ˉ), nitrite (NO2ˉ), ammonium (NH4+), sulfate (SO42-), iron (Fe), manganese (Mn), arsenic (As) and cadmium (Cd). The results were compared with the national regulation on groundwater quality. The findings of this study indicated that groundwater in the Mekong Delta was contaminated with microorganisms and some heavy metals (Fe, Mn, and As). This was related to anthropogenic activities, such as improperly treated domestic wastewater and agricultural and industrial wastes. Based on the results of GWQI, 30% of the total groundwater samples in the Mekong Delta were classified as very good for drinking purposes. However, over 26% of all samples were unsuitable for drinking. In terms of risk assessment, children were rather susceptible to cancer risks and adverse health effects through drinking As-contaminated groundwater than adults. The cancer risks of consuming As-contaminated groundwater for children and adults were up to 4.28×10-3that is higher than the acceptable risk. The highest aggregate hazard quotient of heavy metal-contaminated groundwater for children and adults was 9.54, which means that they could suffer adverse health effects. Groundwater is an indispensable source of freshwater in the Mekong Delta; thus, home water treatments are recommended to protect public health, and an in-depth groundwater quality and health risk assessment should be conducted. Doi: 10.28991/CEJ-2023-09-03-09 Full Text: PDF
The Value of Design Thinking for PhD Students: A Retrospective Longitudinal Study
Authors: Victorino Guilherme , Coelho Pedro S. , Henriques Roberto 
Published: March 2023

Doctoral studies are changing worldwide, with growing concerns about doctoral graduates' employability and ability to develop relevant links with industrial challenges. The present study aims examine the impact of Design Thinking skills on PhD students on their future academic and professional performance. Drawing on 7 years of pedagogical experimentation, we conducted a mixed methods longitudinal study to investigate the perceptions of students who attended a two-day Design Thinking workshop. Two questionnaires, with a total of 40 items measuring the quality and course impact dimensions, were given to 415 and 41 students, respectively. Finally, 12 students were chosen for in-depth interviews to learn more about how they applied their newly acquired design thinking skills in their research and work. Our findings show that developing Design Thinking skills impacts the professional lives of students of all fields of knowledge, ages, and stages of their PhD. The primary outcomes mentioned are associated with increased creative confidence and collaboration abilities. This study focuses on relevant dimensions for designing and delivering Design Thinking skills within doctoral programmes, as well as the impact of design thinking on the quality of PhD education and student employability opportunities. Doi: 10.28991/ESJ-2023-SIED2-02 Full Text: PDF
Teachers' Perspectives on ICT Curriculum and Students' Learning Skills
Authors: Lahiani Hanene , Aljarrah Hani Y. , Alqudah Hatem , Alwaely Suad A. 
Published: March 2023

Objectives: The role of technology in modern life is expanding rapidly. Educational technology has emerged as a crucial component in raising academic achievement worldwide. Teachers all over the world are now focusing on it. Therefore, this study examined the teachers' perspectives on the ICT curriculum and its effect on students' eLearning skills in the UAE. Methods/Analysis: Researchers used a questionnaire to gather the data to learn more about how technology is being used in UAE Model Schools. There were a total of 150 teachers (60 female and 90 male) from three different Abu Dhabi schools included in the study. In addition, the study used descriptive statistics for the analysis. Findings: The study's findings confirmed that teachers at both institutions use technology in the classroom. Novelty /Improvement:Practical implications for the United Arab Emirates support of technology are explored. Doi: 10.28991/ESJ-2023-SIED2-03 Full Text: PDF
Pemberdayaan Masyarakat melalui Pelatihan Edutourism dalam Peningkatan Masyarakat Pesisir Pulau Tunda, Banten
Authors: Khairusy Mirza Abdi , Ferial Linardita , Atmaja Sukarta 
Published: March 2023

Kawasan pesisir Pulau Tunda memiliki daya tarik yang luar biasa bagi pengembangan pariwisata di Provinsi Banten. Tujuannya untuk mengembangkan potensi masyarakat sekitar dalam menciptakan pemandu wisata lokal sebagai upaya meningkatkan perekonomian masyarakat di pesisir Pulau Tunda, Banten. Kegiatan pengabdian kepada masyarakat dilaksanakan di Pesisir Pulau Tunda Provinsi Banten pada Agustus 2021 dengan menggunakan metode Training of Trainer (ToT) dan Focus Group Discussion (FGD). Pelaksanaan Training of Trainer (ToT) dilakukan dengan metode pentahelix dengan kerjasama dari pemerintah, akademisi, pihak swasta, masyarakat dan media elektronik. Hasil pelatihan yang diperoleh adalah sebanyak 87% peserta memahami isi pelatihan eduwisata dan berminat menjadi pemandu wisata lokal sehingga perlu adanya perencanaan anggaran pengembangan kawasan pesisir yang dirancang setiap tahun yang menjadi penentu skala pengembangan potensi wisata di Pulau Tunda.

The coastal area of ​​Tunda Island has an extraordinary attraction for tourism development in Banten Province. The aim is to develop the potential of the surrounding community in creating local tourist guides as an effort to improve the economy of the community on the coast of Tunda Island, Banten. Community service activities carried out on the Coast of Tunda Island, Banten Province, in August 2021 using the Training of Trainer (ToT) and Focus Group Discussion (FGD) methods. The implementation of the Training of Trainers (ToT) is carried out using the pentahelix method with collaboration from the government, academics, private parties, the community and electronic media. The results of the training obtained were as many as 87% of participants who understood the content of the edutourism training and were interested in becoming a local tour guide so that there was a need for budget planning for the development of coastal areas which was designed every year which made it a determinant of the scale of tourism potential development on Tunda Island.
SIMPEL BEDA (Sistem Informasi Pelaporan Berbasis Android untuk Bidan Desa)
Authors: Jaenudin Jejen , Widhyaestoeti Dahlia , Susilo Tri Agung 
Published: March 2023

Peningkatan Pemantauan Kesehatan Ibu dan Anak Daerah (PWS-KIA) dan pelaporan yang dilakukan bidan desa setiap bulan ke Puskesmas di Kecamatan Gunungsindur yang meliputi 6 desa dan 64 Posyandu, diperlukan aplikasi berbasis android yang dapat menghitung indikator PWS KIA dan menampilkan laporan yang dibutuhkan oleh bidan desa. Perancangan aplikasi SIMPEL BEDA dibuat dengan pendekatan model Waterfall, perancangan database dimulai dari proses normalisasi data yang diperoleh dari masing-masing Posyandu dan Puskesmas di tingkat Kecamatan. Penulisan kode program menggunakan bahasa pemrograman Kotlin dan XML dengan aplikasi Android Studio, pengujian fungsional aplikasi dilakukan dalam Black Box dengan metode Boundary Value Analysis (BVA). Perhitungan masing-masing indikator PWS KIA telah diimplementasikan pada aplikasi SIMPEL BEDA sehingga diperoleh hasil perhitungan dalam laporan bulanan PWS KIA. Aplikasi SIMPEL BEDA dapat digunakan oleh kader dan bidan desa untuk mencetak atau mengirimkan laporan dalam bentuk digital ke puskesmas dalam bentuk tabel dan grafik berdasarkan bulan dan tahun dalam format pdf yang dapat diunduh.

Increased Monitoring of Local Areas for Maternal and Child Health (PWS-KIA) and reporting carried out by village midwives every month to Puskesmas in Gunungsindur District which includes 6 villages and 64 Posyandu, an android-based application is needed that can calculate PWS KIA indicators and displays the reports required by the village midwife. The design of the SIMPEL BEDA application is made using the Waterfall model approach, database design starts from the process of normalizing the data obtained from each Posyandu and Puskesmas at the District level. Writing program code using the Kotlin programming language and XML with the Android Studio application, functional testing of the application is carried out in Black Box with the Boundary Value Analysis (BVA) method. The calculation of each PWS KIA indicator has been implemented in the SIMPEL BEDA application so that the calculation results are obtained in the PWS KIA monthly report. The SIMPEL BEDA application can be used by cadres and village midwives to print or send reports in digital form to the puskesmas in the form of tables and graphs based on month and year in pdf format that can be downloaded.
Menggabungkan Budaya dan Pemahaman antar Budaya dalam Pengajaran Bahasa Inggris: Webinar bagi Pengajar Bahasa Inggris di Sulawesi Utara
Authors: Santoso Martha Nandari 
Published: March 2023

Kegiatan pengabdian pada masyarakat ini bertujuan untuk memberdayakan para peserta untuk menggabungkan budaya dan pemahaman anatr budaya dalam pengajaran Bahasa Inggris sebagai Bahasa Asing (EFL). Materi budaya berfokus pada pengajaran budaya yang beragam dan refleksi pada budaya lokal. Tiga belas (13) guru bahasa Inggris di SMA dan universitas dari Provinsi Sulawesi Utara mengikuti kegiatan daring ini yang menggunakan aplikasi Zoom pada 13 Juli 2022. Sesi ini terdiri dari 1). pemaparan penulis tentang budaya, aspek-aspeknya dan tujuan pengajaran budaya, 2). beberapa tugas untuk peserta, dan 3). diskusi kelompok tentang bagaimana menggabungkan materi budaya dalam materi pengajaran bahasa Inggris mereka. Di akhir sesi, para peserta menyampaikan hasil diskusi kelompok, dan sesi diakhiri dengan tanya jawab. Secara keseluruhan, webinar ini berhasil. Namun jika kegiatan seperti ini akan dilakukan lagi, para peserta harus lebih dibimbing untuk mengembangkan budaya internasional selain budaya lokal. Akan lebih baik juga jika kegiatan ini dilakukan dalam dua sesi terpisah daripada hanya satu sesi, sehingga peserta memiliki cukup waktu untuk mengerjakan tugas dan merevisi pekerjaannya setelah mendapat umpan balik dari peserta lain dan instruktur.

This community service activity aims to empower the participants to incorporate culture and interculturality in the English as a Foreign Language (EFL) instruction. The cultural material focuses are on the teaching of diverse cultures and the reflection on the local culture. Thirteen (13) high school and university English teachers from North Sulawesi Province joined this online activity using a Zoom platform on July 13, 2022. This session is comprised of 1). the author’s presentation about culture, its aspects and objectives of teaching culture, 2). some tasks for the participants, and 3). a group discussion on how to incorporate cultural materials in their EFL instruction. By the end of the session, the participants shared the group discussion results, and the session was ended with questions and answers. Overall, this webinar was successful. But if this kind of activity will be conducted again, the participants should be guided more on developing international culture besides the local culture. It will also be better if this activity is conducted in two separate sessions instead of one session only, so that the participants could have enough time to do the task and revise their work after getting feedback from their peers and instructor.