bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of Cooling Conditions, Retrofitting on Strength of Concrete Subjected to Elevated Temperature
Authors: Kharmale Swapnil B. , Sathe Pramod S. , Kolekar Yashwant A. 
Published: August 2023

Concrete has a high degree of fire resistance at moderate temperatures. High temperatures, however, cause concrete to lose its stiffness and strength. The effects of cooling techniques and retrofitting on the strength of concrete exposed to high temperatures have not been synchronized in previous studies. This experimental research aims to evaluate the effect of cooling conditions and the effectiveness of retrofitting concrete subjected to elevated temperatures. Four types of concrete: M 20 normal concrete (NC); M 20 metakaolin concrete (MC); M 40 standard concrete (SC); and M 40 self-compacting concrete (SCC) are considered in this study. A total of 864 samples consisting of cube, beam, and cylinder specimens are subjected to sustained elevated temperatures of 400oC, 600oC, and 800oC for 2 hours rating. The weight and strength of half of the heat-damaged samples are assessed following natural air cooling (NAC) and water jet cooling (WJC). The remaining 50% of samples retrofitted with carbon fiber reinforced polymer (CFRP) are tested to evaluate the upgraded strength. The experimental findings demonstrate that water jet cooling (WJC) causes more strength degradation, and CFRP proves to be effective in restoring the strength of heat-deteriorated specimens. Overall, self-compacting concrete (SCC) has shown high resistance to elevated temperatures. Doi: 10.28991/CEJ-2023-09-07-013 Full Text: PDF
The Reliability of W-flow Run-off-Rainfall Model in Predicting Rainfall to the Discharge
Authors: Tama D. Riyadi , Limantara Lily M. , Suhartanto E. , Devia Y. Padma 
Published: August 2023

This research intends to predict the discharge (run-off) from rainfall for which the model is built using W-flow. The research location is in the Gajah Mungkur reservoir (Wonogiri) in Indonesia. The estimation of reservoir inflow has an important role, mainly in the scheme of reservoir operation and management. However, the heterogeneity of complex spatial and temporal patterns of rainfall and also the physiographic context of a watershed cause the development of a model of real-time run-off and rainfall that can accurately predict the reservoir inflow to become a challenge in the development of water resources. In relation to the analysis and prediction of rainfall, the constraint and problem that is still often faced is the minimal availability of observed rainfall data spatially as well as temporally; the time series of rainfall data is not long and complete enough; and the number of rainfall stations is less evenly distributed. The methodology consists of carrying out the literature study, collecting as much rainfall data as possible to build a W flow model, then carrying out the model calibration and analyzing the prediction of real-time reservoir inflow for operation. The result shows that the dependable discharge of the Wonogiri watershed shows that there are two peak discharges, which happened on February II (the second half of February) and December II (the second half of December). However, the discharge is decreasing in July and reaching its lowest level in October II (the second half of October). Doi: 10.28991/CEJ-2023-09-07-015 Full Text: PDF
Experimental and Numerical Parametric Studies on Inclined Skirted Foundation Resting on Sand
Authors: Al-Shyoukhi Tamer , Elmeligy Mahmoud , Altahrany Ayman I. 
Published: August 2023

Skirted foundation behavior is enhanced due to the increase in skirt angle. The bearing capacity of the inclined skirted foundations resting on sandy soil is influenced by the soil parameters and skirting systems. Finite element analyses were carried out using Plaxis-3D software to find out the influence of the relative density, the internal friction angle of the supported soil, and the additional skirts on the bearing capacity of the inclined skirted foundations. The experimental work on a small physical scale was also carried out to support the numerical findings, which give an acceptable agreement. The findings revealed that the increase in relative density resulted in a significant increase in the bearing capacity of the inclined skirted foundation. In the same way, as the internal friction angle increases, the bearing capacity is affected by this increase, which improves the bearing capacity value. The effect of the additional skirts on the bearing capacity is observed to be neglected, and, in some cases, it causes a negative effect. The findings of this study contribute to a greater comprehension of the behavior of inclined skirted foundations and can assist in the future design of more efficient and effective foundation systems. Doi: 10.28991/CEJ-2023-09-07-017 Full Text: PDF
Evaluating Carbon Footprint in the Life Cycle Design of Residential Concrete Structures in Jordan
Authors: Al-Omari Omar , Alkhdor Ahmad , Al-Rawashdeh M. Abed , Al-Ruwaishedi M. R. , Al-Rawashdeh S. B. 
Published: August 2023

The construction industry is a significant source of greenhouse gas emissions, and there is a growing global interest in reducing the environmental impact of carbon dioxide emissions associated with building construction and operation. Concrete, the most commonly used material in construction, is known to release a substantial amount of environmentally harmful waste throughout its life cycle, including production, construction, operation, and demolition. The worldwide production and consumption of concrete contribute to approximately 5% of all human-related CO2 emissions each year. To assess the carbon footprint of concrete manufacturing and its application in construction projects, a comprehensive approach called life cycle assessment (LCA) is necessary. This paper presents a new process-based LCA approach to analyze carbon emissions and evaluate the carbon footprint of concrete from raw material extraction to the end-of-life stage. To address carbon emissions throughout the life cycle of concrete structures in the Middle East, the study adopts a case study approach, focusing on selected concrete structures in Jordan. The findings from these case studies highlight that the operational phase of concrete structures is the primary contributor to carbon emissions. By thoroughly examining the carbon cycle within structures and their interactions with the surrounding ecosystem, significant reductions in CO2 emissions, environmental deterioration, and its consequences can be achieved. Doi: 10.28991/CEJ-2023-09-07-07 Full Text: PDF
The Influence of a Damaged Concrete Cover on the Behavior of a Simply-Supported Beam
Authors: Shadhan Khalid K. , Al-Zahra Bilal Ismaeel Abd , Kadhim Muhammad Jawad 
Published: August 2023

The concrete cover is a part of the concrete that provides the required protection for the reinforcing steel within the required element from external effects. This concrete cover can be damaged for an assortment of reasons, one of which is environmental factors. As a result, this research focused on the effect of worn concrete covering on the structural response of beams. Moreover, the possibility of repairing or replacing this concrete cover with a cement material was done by testing seven beams with the exact dimensions (2700 mm long, 250 mm deep, and 140 mm wide). The first specimen was a control specimen, while in the remaining specimens, a part of the concrete cover was removed in the midspan region with a length of 600 mm and in different formats. The part below the neutral axis (tension zone) was removed in the first two specimens. The part above the neutral axis (the compression zone) was removed in the second two specimens. The whole cover was removed within the specified distance for the other two specimens. In one out of every two of these six specimens, the removed concrete cover was replaced with cementitious material. A flexural test was performed for all specimens, and the conclusion was reached that damaging or removing the concrete cover from the tensile region (below the neutral axis) is less harmful than from the compression region since the beam is often designed as a cracked section. Also, removing the concrete cover from the compression region gives cracks a greater width than removing the concrete cover from the tension region at the same loading level. In the case of replacing the concrete cover with a cementitious one, if the replacement is in the compression zone, it will result in cracks when loading with a width greater than that of the rest of the cases. For specimens that removed their concrete covers from the tension zone, compression zone, and the whole section, the failure loads decreased by 39%, 20%, and 23%, respectively, concerning the control beam. In contrast, all these specimens were repaired with cementitious materials, with an ultimate load capacity approximately equal to the control beams. From these results, any damaged concrete cover for beams in any zone with cementitious materials having high strength and a good bond with old concrete sections can be repaired. Doi: 10.28991/CEJ-2023-09-07-09 Full Text: PDF
PENGARUH PERDAGANGAN INTERNASIONAL TERHADAP PERTUMBUHAN EKONOMI INDONESIA
Authors: Nurhayati Nurhayati , Juliansyah Hijri 
Published: August 2023

This study examined the `effect `of `exports, `imports, exchange rates, `and `domestic investment to economic growth in Indonesia. This study used secondary `data `from 2000 to 2019. The `data `analysis technique used was multiple linear regression models (Time Series) with `the `help `of Eviews 10. The results partially indicated that export, import, exchange rate, and PMDN activities did not influence economic growth in Indonesia. However, simultaneously, export, import, exchange rate, and PMDN activities positively and significantly influenced economic growth in Indonesia. The coefficient of determination of R2 `in `this `study was 0.831, meaning `that exports, imports, exchange rates, and PMDN were 0.609173 or 60.9%, which were declared to have no effect, and the remaining 39% was stated not to be `influenced `by other variables `outside of this study.
RISK-ORIENTED MANAGEMENT OF PORTS IN THE IMPLEMENTATION OF CONCESSION PROJECTS
Authors: Piterska Varvara , Samoilovska Valentina , Shakhov Valentin , Tanaka Hiroshi 
Published: August 2023

The subject matter of research in the article is the models and methods of risk management in the process of implementing concession projects within the port activities. The goal of the work is to develop a risk management model for the implementation of concession projects in the port to improve the efficiency of port activities and ensure the competitiveness of port services. The following tasks are solved in the article: analysis of international and national experience in reforming the port industry, consideration of the essence of the project-oriented approach in port management, determination of the relevance of the implementation of public-private partnership projects on the example of concession projects in the port, analysis of risks arising from the project management of ports within the concession, identification of concession project stakeholders, proposal of a classification model for risk distribution among project stakeholders, prioritization of risks based on the probability of their occurrence, identification and significance of negative consequences, development of a risk assessment model for port production in concession projects. The following methods are used: project management methods, failure mode and effects analysis method, risk management theory, quality management methods. The following results were obtained: based on analytical research of the world and Ukrainian experience in the operation of transport hubs, it was proved that an effective mechanism for increasing the competitiveness of ports is the implementation of reform principles based on project management methodology. It has been established that the most common type of port activity improvement is the implementation of concession projects. It is noted that in the process of managing a concession project, certain risks arise that require assessment. The stakeholders of the concession project are identified and a classification model for the distribution of risks between them is proposed. A model of risk-based port management in concession projects has been developed based on the failure mode and effects analysis method taking into account the determination of the risk priority rank. Conclusions. To increase the competitiveness of ports, it is proposed to develop and implement concession projects in port activities based on the project management methodology, the implementation of which can increase the efficiency of port services. There are risks in the management of port activities within a concession project. It is proposed to distribute them among stakeholders and determine the probabilities of occurrence, identifying risks, assessing the significance of their impact on the quality of port services. Based on the proposed risk assessment model, taking into account the determination of the priority rank, it is shown that the greatest risk is associated with the implementation of customs formalities and the danger of the port water area.
Pengembangan Instrumen Soal IPA Berbasis STEM untuk Siswa Kelas IV Materi Kemagnetan dan Gaya Pada Fase B di Sekolah Dasar
Authors: Wibowo Fajar Setya , Patonah Siti , Sukamto Sukamto 
Published: August 2023

Pengembangan instrumen soal berbasis STEM masih jarang ditemukan dalam kurikulum merdeka ini, dengan ini menambah pilihan bagi guru untuk pelaksanaan menilai hasil melajar melalui assesment. Pentingnya assesment awal sebelum merancang pembelajaran dalam kurikulum merdeka. Penelitian ini bertujuan untuk mengembangkan instrumen assesment awal untuk mengetahui kesiapan siswa fase B mengikuti pembelajaran IPAS materi kemagnetan dan gaya berbasis STEM. Penelitian ini merupakan modifikasi dari model penelitian dan pengembangan (R&D )Brog and Gall. Penelitian dilaksanakan di SDN Kalisari 3 Sayung demak, sebanyak 133 siswa terdiri dari 72 siswa laki laki dan 61 siswa perempuan menggunakan konvenien sampling. Soal yang diberikan berupa pilihan ganda sebanyak 14 butir soal materi kemagnetan dan gaya. Teknik analisis validasi dan reliabilitas butir soal menggunakan Indeks Aiken dan Rasch Model dengan menggunakan software winstep 3.73. Hasil penelitian menunjukan seluruh butir soal memiliki kategori validitas sedang s.d. tinggi untuk indeks Aiken (0.76 s.d. 0.8). Sedangkan berdasarkan analisis Rasch Model, nilai Measure(-1.88s.d.2.20), nilai Model SE (0.20s.d.0.30) nilai Outfit MNSQ (0.67s.d.1.30), nilai Outfit ZSTD , nilai Pt mean core(0.20 s.d. 0.61), reliabilitas item dan person (0.94 dan 0.50) sedangkan Cronbach Alpha (0.62) . Kesimpulan butir soal dapat digunakan sebagai assement awal mata pelajaran IPAS.Kata Kunci: Instrumen Assement Awal, STEM, Kurikulum merdeka, Rasch model
Peningkatan Kemampuan Berhitung Perkalian melalui Metode Jarimatika pada Siswa Kelas Rendah
Authors: Apriani Rahmi , Sutisnawati Astri , Maula Luthfi Hamdani 
Published: August 2023

Penelitian dilaksanakan di SD Negeri Gunung Jaya dan subjek dalam penelitian ini sebanyak 29 siswa. Saat mengamati pembelajaran matematika materi perkalian di kelas II, selama proses belajar matematika Guru masih menggunakan konsep matematika yang kurang tepat dan pembelajaran pun menjadi membosankan. Selain itu, guru juga belum memakai metode berhitung yang memudahkan siswa dalam belajar perkalian. Siswa menjadi terbebani ingatannya dalam menghafal perkalian. Siswa terlihat terpaksa sehingga kemampuan berhitung perkalian siswa masih rendah dan pembelajaran dirasa membosankan. Berdasarkan permasalahan tersebut, peneliti tertarik menggunakan Jarimatika untuk mengatasi masalah tersebut. Hasil penelitian memperlihatkan proses belajar matematika menggunakan metode Jarimatika mampu menaikkan kemampuan dalam berhitung perkalian siswa kelas II di SD Negeri Gunung Jaya. Berdasarkan pengaruh belajar matematika pada kemampuan berhitung perkalian siswa melalui metode Jarimatika, pada siklus I yaitu mencapai 72,41%, sedangkan pada siklus II mengalami peningkatan yaitu 82,75. Dengan peningkatan tersebut bisa ditarik kesimpulan, metode Jarimatika berpengaruh terhadap peningkatan kemampuan berhitung perkalian siswa. Hal ini menunjukkan beberapa poin bahwa penggunaan Jarimatika dapat didorong sebagai metode alternatif guna menaikkan keterampilan siswa dalam menghadapi masalah perkalian berhitung serta membuat pembelajaran jadi lebih menarik memakai berbagai metode.
Teknik Permainan Dan Penyajian Saxophone Pada Lagu I Don’t Wanna Miss A Thing Karya Diane Warren
Authors: Sitohang Doharjo , Simangunsong Emmi , Harefa Brian 
Published: August 2023

Penelitian ini membahas tentang teknik permainan dan penyajian lagu I Don’t Wanna Miss a Thing karya Diane Warren. Lagu tersebut telah banyak dimainkan oleh pemain saxophone di antaranya adalah Thiago Rocha, Filipe Bohlke, dan Nathan Andrade. Lagu ini dimainkan oleh penulis dengan menggunakan teknik staccato, legato dan altissimo. Penyajian lagu ini penulis menggunakan saxophone alto diiringi diiringi instrumen keyboard, gitar, bass, drum, dan violin. Pada bagian akhir penulis memaparkan penyajian lagu I Don’t Wanna Miss A Thing pada saat melaksanakan resital.
IPSE: A Scholar-Practitioner Protocol for Evidence-based Practice in Qualitative Research
Authors: Behal Dr. Anil 
Published: August 2023

<p>IPSE is an innovative research protocol developed by a team of French researchers in the field of qualitative medical research (QHR). This paper attempts to inspire social science doctoral researchers outside the medical field to consider adopting this unique method in future studies. It unpacks for readers how the IPSE research protocol works and provides a compelling rationale for its adoption, given the gaping chasm between research and practice. Figures and illustrations used in this work are from authors who have given permission to use and disseminate their work with proper attribution under a Creative Commons license that does not need permission. </p>
The Holocene to Modern Fraser River Delta, Canada: Geological History, Processes, Deposits, and Natural Hazards
Authors: La Croix Andrew , Dashtgard Shahin , Ayranci Korhan , Clague John , Hill Philip 
Published: August 2023

The Fraser River Delta (FRD) is a major sedimentary system and is home to one of Canada’s largest metropolitan areas, Metro Vancouver. It is also an ecologically important region that is culturally significant to several First Nations groups. In this review, we summarize the state of knowledge about the geological evolution of the FRD and link hydrodynamic processes with sedimentary products across the continuum of environments from the river to the delta slope. We discuss the implications of sedimentation for natural hazards and highlight knowledge gaps. This review also serves as background for continued research on the FRD.	The FRD consists of four main zones: river, delta plain, tidal flats, and delta slope. The river zone includes the Fraser River and its various distributary channels from the landward limit of tidal modulation to the terminus of the distributary channels at the seaward limit of the tidal flats. The delta plain borders the modern Fraser River’s distributary channels. Intertidal marshes and tidal flats rim the seaward portion of the delta plain and include both “active” and “abandoned” areas. Active tidal flats are situated on the western margin of the FRD and receive sediment directly from the Fraser River; these include Roberts Bank and Sturgeon Bank. Abandoned tidal flats receive virtually no sediment from the Fraser River and occur along the southern boundary of the FRD at Boundary Bay and Mud Bay. The tidal flats transition seaward into more steeply dipping foresets of the subaqueous delta slope. South of the Main Channel the upper delta slope is predominantly sand, and north of the Main Channel the upper delta slope is predominantly mud. The lower delta slope both south and north of the Main Channel consists of mud, and these sediments grade into flat lying, muddy sediment at the base of the Strait of Georgia.	The FRD experiences a range of natural hazards including subsidence and flooding, earthquakes, liquefaction, and tsunamis. Many parts of the FRD are subsiding, which amplifies the effects of rising sea level. Approximately 250 km of dikes along the river, distributary channels, and landward side of tidal flats protects the populated delta plain from river floods and storm surges. Rare subduction-related earthquakes and large crustal and subcrustal earthquakes produce sudden land level changes that can trigger tsunamis, submarine slope failures, and/or liquefaction of unconsolidated delta sediments. With increasing knowledge of the sedimentation on the FRD and its evolution, it may be possible to devise novel methods to protect the populated FRD from some of the worst impacts of these hazardous events.
What Role Did Norway Really Play in The Oslo Process?
Authors: Stensland Fride Lia 
Published: August 2023

Abstract
How can ‘small’ and politically peripheral states have a significant impact on issues dominated by big states? For example, how did Norway come to play such an important role in fostering negotiations between Israel and the Palestine Liberation Organization (PLO) in the early 1990s? This article seeks to answer these questions by analyzing Norway's relationship with Israel and the PLO from 1948 until 1993, as well as Norway's role during the negotiations that led to the signing of the first Oslo Accord. Seen through the theoretical framework of small-state mediation, Norway's lack of influence might have helped convince the parties to open dialogue, but it also implied an inability to provide a level playing field for just negotiations.
Denmark's Engagement in the Oslo Peace Process
Authors: Levitan Nir 
Published: August 2023

Abstract
Since 1993, professional and historical record literature has largely focused on the Norwegian involvement in the Oslo peace process. Denmark's extensive mediation efforts to resolve the Israeli-Palestinian conflict have not received similar scrutiny. This article assesses Denmark's involvement in the period following the Oslo Declaration of Principles in 1993. Denmark's peace engagement included two main diplomatic tracks. The unofficial track was designated as the Louisiana Process and the official track was named the Road Map for Peace. In both tracks, Denmark was able to demonstrate a comprehensive foreign policy that reflected a unique mediation strategy. Denmark's capacity to alter the nature of the conflict was restricted by its meager resources and its inability to impose decisions on the involved parties.
The Evolution of Narratives on the Oslo Process among Palestinian-Arab Political Elites in Israel
Authors: Rudnitzky Arik 
Published: August 2023

Abstract
The signing of the Oslo Accords in the 1990s between Israel and the PLO has had significant implications for the Palestinian-Arab community in Israel. From a three-decade perspective it becomes clear that the debate on Oslo continues to resonate among the various political and ideological circles in Israel's Arab community. While the members of the Arab-Jewish current consider the Oslo period the Golden Era of Arab parties in Israeli politics, the Palestinian nationalists in the Arab community sharply criticize not only the outcome of the Oslo Accords but also the Palestinian leadership that endorsed them as well. The Islamists greeted the Oslo Accords with mixed reactions but over time began to criticize their outcome as well. This article sheds light on the evolving narratives of Oslo among the various ideological currents in Israel's Arab society from the early 1990s to the present.