bluuebunny/crossref_metadata_2025 huggingface dataset:
MENGURAI KONFLIK KOREKSI ARAH KIBLAT DI TENGAH-TENGAH MASARAKAT
Authors: * Jayusman
Published: March 2023

The accurate Qibla direction has significant contribution to the perfection of Muslimâ€™s praying (shalat). It is very tough to pray with a completely straight position towards the Qibla. In addition, to build a mosque with accurate Qibla direction is not easy. It may have been measured properly but there was a shift in its development. The position of mosque where they were praying may shift a few degrees from the accurate direction of Qibla.Â  Therefore, this paper will discuss the Qibla direction in order to avoid the difficulty in praying.
PERKEMBANGAN PEMIKIRAN HUKUM DALAM MUHAMMADIYAH
Authors: Berkah Dian
Published: March 2023

This paper is studying development of legal though engendered by Majlis Tarjih Muhammadiyah. Development of human interaction is very balance with the need of law as human control. However, it has unbalance relation with the law product which is produced. Therefore, it should produce the new law product as a human life foundation which has not been punished explicitly in al-Quran and al-Hadits. This matter needs concrete action in looking for new law from both sources of Moslem which are called ijtihad. This action is developed widely by social-religious organization such as Muhammadiyah. Furthermore this organization established Majlis Tarjih in 1927 as a place for ijtihad which is grown till now. In its actions, Muhammadiyah has made several law-thinking which follow the methods development of ijtihad, branding, and also it is not far from the recent situation and condition.
KRITIK TERHADAP PEMASARAN BANK SYARIAH (PENDEKATAN EKSPERIENTAL MARKETING)
Authors: Asytuti Rinda
Published: March 2023

This study examines the idea of Bernard Schmitt, â€˜experiential marketingâ€™, on Islamic banks that are operating side by side with conventional banks. This marketing is a concept that integrates elements of emotions, logic, and general thought processes to connect with the consumer. The goal of experiential marketing is to establish the connection in such a way that the consumer responds to a product offering based on both emotional and rational response levels. Via "experiential marketing," Schmitt presents a revolutionary framework for getting in-touch with one's customers while at the same time differentiating oneself from rest of the competition. Here are a few of the basics of experiential marketing for Islamic banks, and how this process can often succeed when other marketing strategies fail.
THE INFLUENCE OF TRANSMISSION OF DUAL MONETARY SYSTEMAND FINANCIAL RATIO TO THE FINANCING TO DEPOSIT RATIO (FDR) OF ISLAMIC BANKS IN INDONESIA (2004 â€“ 2011)
Authors: MS AM Hafidz
Published: March 2023

Tulisan ini bertujuan untuk mengetahui faktor-faktor dalam transmisi sistem moneter ganda dan rasio keuangan yang mempengaruhi FDR bank syariah. Studi akan menggunakan pendekatan kuantitatif. Metode analisis menggunakan regresi linear berganda untuk menguji apakah delapan variabel bebas berpengaruh dan berhubungan terhadap FDR. Dengan menggunakan nilai alpha sebesar 0,10 diketahui bahwa terdapat tiga variabel bebas yang berpengaruh secara signifikan terhadap FDR bank syariah, yaitu BI Rate, inflasi dan DPK. Lima varaibel bebas yang lain, yaitu penempatan di SBI Syariah, nisbah, CAR, NPF dan BOPO tidak berpengaruh secara signifikan terhadap FDR bank syariah. Uji F menunjukkan bahwa secara serempak variabel bebas mempengaruhi variabel terikat, karena nilai probabilitas F-statistic lebih kecil dari 0,05. Dari delapan variabel bebas yang digunakan, terdapat lima variabel bebas yang berhubungan positif terhadap FDR bank syariah, yaitu nisbah, inflasi, CAR, DPK dan NPF. Sedangkan tiga variabel lainnya yaitu BI Rate, penempatan pada SBI Syariah dan BOPO berhubungan negatif terhadap FDR bank syariah selama jangkauan penelitian ini.
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Authors: Wahid Zawawi Abdul
Published: March 2023

Dalam hukum perjanjian (akad) Islam, rukun ketiga adalah adanya objek akad (mahal al-aqdi). Objek akad tersebut menjadi sasaran yang hendak dicapai oleh para pihak melalui penetapan akad. Objek akad yang terdiri dari beberapa komponen dapat terbentuk dari dua unsur, yaitu unsur utama yang menjadi sasaran & tujuan pokok dari akad dan unsur tabai' berfungsi sebagai pelengkap & penyempurna dari unsur utama. Masing-masing dari dua unsur tersebut mempunyai dampak hukum yang berbeda, di antaranya adalah hal-hal yang menjadi syarat keabsahan akad harus dipenuhi oleh unsur utama, tidak menjadi syarat bagi unsur tabai', begitu juga indikator yang menyebabkan akad menjadi tidak sah seperti riba, gharar, qimar bila terletak pada unsur utama mengakibatkan akad menjadi fasid, namun tidak berpengaruh bila berada pada unsur tabai'. Tentunya semua itu dengan ketentuan (dhawabith) tertentu agar tidak melanggar garis maqashid syariah. Tulisan ini berupaya menjelaskan seberapa jauh dampak hukum dari asas tabai' dalam sistem penjualan produk yang dilengkapi dengan garansi dan promosi hadiah dengan aneka ragam jenis dan bentuknya yang bertujuan meningkatkan hasil penjualan.
ANALISIS SWOT PERKEMBANGAN BANK SYARIAH DI NEGARA MEGARA-NEGARA MUSLIM
Authors: * Mairijani
Published: March 2023

The role of banks in the economic development of a nation is very vital, including Islamic banking. Therefore, this article is conducted to create an Islamic bank effectively and efficiently to compete in the global economy. This study uses SWOT analysis to provide an overview of the historical development of Islamic banks and present an analysis of the development of sharia-Islamic banks in Muslim countries. bank syariah; analisis SWOT; negara Muslim
PEMBERDAYAAN ZAKAT PRODUKTIF DALAM PEMBERANTASAN KEMISKINAN
Authors: Chaniago Siti Aminah
Published: March 2023

This paper tries to examine the role of zakat in addressing the problem of poverty. Zakah is one of the fundamentals of Islam that has direct economic implications. It requires Muslims to distribute a part of their wealth among the specified heads in order to alleviate poverty and achieve economic emancipation. This institution was able to solve the problems of poverty and extend social services in the classical times. The objective of the paper is to investigate how the zakah institution can be used in the contemporary times to alleviate poverty in Muslim countries.
MENGANTISIPASI PASAR TERBUKA DENGAN MENCIPTAKAN KEUNGGULAN BERSAING MELALUI PENDEKATAN STRATEGI PEMASARAN (Pendekatan Marketing Mix dalam Prespektif Islam)
Authors: * Tamamudin
Published: March 2023

Islam has economic and business systems that are well defined and have proven their efficacy and strength. In marketing practices, Islamic teachings embedded in the Quran, Hadits of the Prophet (pbuh), Ijmaâ€™ (consensus), and Qiyas (analogy) have a foundation that is based on equity and justice. This paper attempts to identify the main characteristics of the Islamic perspective on the framework of marketing mix. The paper analyses the four pillars of marketing mix which are product, price, promotion, place and people. The paper adopts the methodology of evaluating the prevailing practices of marketing mix from an Islamic perspective with the sole aim to highlight the efficacy and strength of an Islamic ethical framework. Finally, the paper illustrates that Islam provides a framework for the creating and sustaining of a strong ethical marketing culture.
PROSPEKTUS REKSADANA SEBAGAI PRINSIP KEJUJURAN BISNIS SYARIAH
Authors: Ismanto Kuat
Published: March 2023

This article aims to discuss about mutual funds, both in conventional and Islamic banks, which have become the choice of investment for the community. It is not remarkable for some prospective investors do not understand about the mutual funds that will be purchased. One way that can be done to find the product is to read the prospectus issued by the company. Prospectus as preliminary information of products (mutual funds) is seen as good will of the company to explain the products that will be sold. From the sharia contract perspective, it is way to eliminate an uncertain or ambiguous subject matter (gharar). Therefore, this article is intended to serve transaction which in accordance with sharia principles.
Regulation of the Maturity of Married Age in Suku Anak Dalam Jambi Province
Authors: Hidayati Rahmi , Yuliatin Yuliatin , Syuib Kholil
Published: March 2023

There have been many previous studies that discussed the theme of early marriage, but the difference from this study is that the people studied are in the majority of isolated communities in Jambi Province (Suku Anak Dalam). The Suku Anak Dalam community has its own rules regarding the practice of marriage and overrides the provisions in the law that have been positive. One of these rules is related to how to measure the maturity of the bride and groom (marriage age limit). For them, girls who have reached puberty are considered capable of getting married, while boys who are mature are marked by a test of dexterity to hunt animals. If the boy passes / passes the test, then he is considered an adult and is able to get married. Because according to the women of the Anak Tribe, the concept of a man's valor lies in his ability to earn a living and hunt. This coincides with the lack of fulfillment of the rules set by the State as stated in Law no. 1 of 1974. This study wants to see what factors cause early marriage and this perspective.
The Bjorka Hacking Phenomenon on Selling Personal Data as a Digital Asset from The Perspective of Maqashid Sharia
Authors: Fageh Achmad , Solikhawati Anisa
Published: March 2023

Personal data is often used as a digital commodity tool on every digital platform such as Shopee, Link Aja, Dana, Go-jek, Grab, and so on. This study aims to find out more about the Bjorka hacking phenomenon on the sale of personal data as a digital asset from a sharia maqashid perspective. This type of research is library research , namely an assessment of library sources related to the problems discussed, especially in exploring contemporary muamalah fiqh concepts from various at-Turath books and books by local fiqh muamalah figures. as well as the West. The data sources of this research are primary and secondary. The results show that the phenomenon of selling data by Bjorka is very clear that this violates the concept of maqashid sharia in terms of dharuriyat , hajiyat , and tahsiniyat . Based on maslahah dharuriyat which is divided into 5 aspects, namely maintaining religion ( hifdhud diin ), guarding the soul ( hifdhun nafs ), guarding offspring ( hifdhud nasl ), guarding reason ( hifdhul aql ), even protecting property ( hifdhul maal ), cases of selling personal data are something that deviates from the principles of maqashid sharia.
THE MISUSE OF SOCIAL MEDIA AS A CAUSE OF DIVORCE AT THE MAJENE RELIGIOUS COURT (STUDY OF FIQH AND SOCIAL MEDIA)
Authors: Nuzha
Published: March 2023

Abstract

Misuse of social media is one of the leading causes of divorce in the digital era. This study explain how the misuse of social media causes divorce in the study of fiqh and social media. This study used qualitative descriptive research.  The data sources were from the judges of the Majene Religious Court, relevant books and articles.  The results show that social media is one of the places that causes nusyuz or disobedience which is shown by changes in the partner’s attitude (infidelity) then continues into syiqaq whisch is a dispute between the couple, while in the study of social media, there is a relationship between cognitif dissonnance theory and virtual space that can cause divorce if the elements of attitude, perception and behaviour are not interconnected.  For example, husbands who are often angry for no reason and commit violence even commit infidelity by uploading intimate photos with other woman on social media which are commented on by virtual communities both supporting or blaspheming

Keywords: Misuse, Divorce, Fiqh, Social Media
ETIKA ISLAM DALAM MANAJEMEN KEUANGAN
Authors: Manunggal Safrudin Arif Marah
Published: March 2023

This article tries to enlighten the Islamic ethical system in finance management. In principle, Islamic finance management has to grip the profits-and-loses sharing as a substitute of interest used by Islamic finance institutions. Now days many â€œIslamicâ€ bankings are attempting to go behind the system. We study financial instruments used by Islamic finance institutions and find that most are not based on profit-and-loss sharing (equity) but, instead, are very debtlike in nature. We try to understand any departures from traditional Islamic principles in the types of transactions offered. We suggest an economic rationale for the constraints imposed on Islamic finance institutions and try to determine if these constraints are likely to be social welfare improving. We also examine the types of projects in which Islamic institutions invest. In this process we hope to shed some light on the efficiency of Islamic finance management and Islamic economies.
PRINSIP-PRINSIP PENANGANAN KEMISKINAN DI MADINAH PADA MASA NABI MUHAMMAD SAW.
Authors: Muna Arif Chasanul
Published: March 2023

This article endeavors to observe our prophet PBUHâ€™s efforts in alleviating the poverty in Madina after his hijrah. The relevance compilations of hadiths (sayings and doings of the prophet PBUH) are described as historical sources to see the methods and the means of the prophet PBUH in eradicating the poverty. These hadiths are explained not only to be interpreted literally, but contextually. In doing so, this writing would be started by depicting the city of Madina with its economic activities and povertyâ€™s problem that emerged after the hijrah. The response and the manner of the prophet PBUH in alleviating the poverty will be explaining afterward.
POTENSI DAN STRATEGI PENGEMBANGAN BANK SYARIâ€™AH DI INDONESIA: KAJIAN PRODUK SYARIâ€™AH DARI SEGI FIQIH MUâ€™AMALAT
Authors: Ratnawati Anny , Mursid Mansur Chadi
Published: March 2023

At the present, Indonesia operate dual banking system that are conventional banking system with its interest rate runs side by side and the Islamic banking with the profit-sharing/non-interest system of its own. Islamic banking using fiqih muâ€™amalat as the basic theory in the syariâ€™ah product. In general, communityâ€™s respond toward Islamic bank is good relatively that shown by the trend of Third Parties Funding and Financing to Deposit Ratio with low level of Non Performing Loan. This paper assess the consumerâ€™s preference toward both conventional and Islamic banking, in related with analysis of potency and development strategy of Islamic banking in Indonesia by using fiqih muâ€™amalat as the basic theory. The analysis of data by using qualitatively (descriptive) analysis, cross tabulation, and logistic regression model. Literature study used in this paper. In general, communityâ€™s attitude toward interest rate system still ambiguous, that are interest rate is contrary to syariâ€™ah of Islam, meanwhile in banking transaction they still use conventional system. The reasons that motivate consumer to adopt Islamic banking related to professionalism of bank, security, and pleasure in doing transaction, strategic location, and the implementation of syariâ€™ah system. However, community still has difficulties to comprehend the technical term of Islamic banking. Thus, socialization and education process about economic system of Islam (syariâ€™ah economic) designate necessary requirement in encourage the development of Islamic banking in the future.
Estimating MS-BLGARCH Models Using Recursive Method
Authors: Ghezal Ahmed , Zemmouri Imane
Published: March 2023

In this paper a new class of models is proposed for modeling nonlinear and stationary time series. This new class of models is referred to as the Markov-switching bilinear GARCH (MS-BLGARCH) models. In these models, the parameters are allowed to depend on an unobservable time-homogeneous and stationary Markov chain with finite state space. The statistical inference for these models is rather difficult due to the dependence on the whole regime path. We propose a recursive algorithm for parameter estimation in MS − BLGARCH. The proposed method is useful for long time series as well as for data available in real time. The main idea is to use the maximum likelihood estimation (MLE) method and from this develop a recursive Expectation-Maximization (EM) algorithm.
Seasonal Variations in Groundwater Quality under Different Impacts Using Statistical Approaches
Authors: Nguyen Giao Thanh , Huynh Nhien Thi Hong
Published: March 2023

The objective of this study was to evaluate seasonal fluctuations in groundwater quality, determine the effects of different stressors on this resource, and recognize the potential pollution sources in a coastal region of southern Vietnam. Eleven samples collected in Ben Tre province during the dry and wet seasons were then analyzed for sixteen parameters, including pH, total dissolved solids (TDS), salinity, total hardness (TH), ammonium (NH₄⁺-N), nitrite (NO₂ˉ-N), nitrate (NO₃ˉ-N), sulfate (SO₄²ˉ), chloride (Clˉ), iron (Fe), manganese (Mn), lead (Pb), mercury (Hg), arsenic (As), coliforms, and Escherichia coli (E. coli). Pearson correlation analysis, principal component analysis (PCA), and cluster analysis (CA) were employed. The results indicated that total dissolved solids, salinity, total hardness, Clˉ, E. coli and coliform were detected as contaminants in groundwater samples. The trend of fluctuations in the parameters was mostly higher in the dry season. Which Mn and coliform significantly fluctuated between the dry and wet seasons. Activities in industrial-craft areas, landfills and seawater-intruded areas negatively impacted groundwater quality, typically TDS in industrial-craft areas, coliform and E.coliat the landfill area. Six principal components obtained from PCA could explain 93.6% of the variance, and all parameters are responsible for variations in groundwater quality. Geology, discharged wastewater, landfill leachate, agricultural activities, and saltwater intrusion can be considered representative factors. CA grouped the collected samples into four clusters based on the similarity in water properties. The analysis results showed that the locations in each cluster have outstanding water quality characteristics, clusters I and III have high TDS characteristics, cluster II has coliforms, and cluster IV sets of locations with high salinity. This study is promised to partially fill the gap in comprehensive information on groundwater quality in the coastal province so that policymakers can develop sustainable water management strategies in the future. Doi: 10.28991/CEJ-2023-09-03-01 Full Text: PDF
Experimental and Numerical Studies on Flexural Behavior of GGBS-Based Geopolymer Ferrocement Beams
Authors: El-Sayed Taha A. , Deifalla Ahmed F. , Shaheen Yousry B. , Ahmed Hossam H. , Youssef Aya K.
Published: March 2023

The ferrocement structural concept has been shown to offer exceptional mechanical properties in terms of toughness, fracture control, and impact resistance, which are achieved by tight spacing and homogeneous reinforcement dispersion within the matrix. The flexure behavior of geopolymer ferrocement beams under axial flexural stress is being explored experimentally and computationally in this present work. Under flexural loads, nine samples of geopolymer ferrocement beams 150 mm thick, 75 mm wide, and 1700 mm long were tested to failure. The reinforcing steel bars and wire meshes, as well as the quantity of wire mesh layers, were the key factors studied. The initial crack load, ultimate failure load, and mid-span deflection with various loading phases, cracking patterns, energy absorption, and ductility index were all studied in relation to the behavior. In terms of carrying capacity, absorbing energy, and ductility, welded steel wire mesh beams fared better than other materials. Using ANSYS-19 software, nonlinear finite element analysis (NLFEA) was carried out to demonstrate the behavior of composite ferrocement geopolymer beams. The ensuing experimental and numerical data demonstrated that the degree of experimental value estimation supplied by the FE simulations was sufficient. It is crucial to demonstrate that, in comparison to control specimens, the increase in strength of specimens reinforced with tensar meshes was reduced by around 15%. Doi: 10.28991/CEJ-2023-09-03-010 Full Text: PDF
Analysis of Barrier Factors for Collaboration in Handling Used Cell Phones for Second-hand Market Actors to Implement e-waste Management
Authors: Budijati Siti Mahsanah , Pujawan I Nyoman , Asih Hayati Mukti
Published: March 2023

Waste management is an activity to manage residues, by-products, and used items. Handling used cell phones is one form of waste management activity. In developing countries, used cell phones are mostly handled by informal actors, where second-hand market actors for cell phones act as collection points. Some of these activities often affect the environment and the actors' health due to a lack of adequate technology. Hence, a collaboration between informal and formal actors is necessary to handle the used cell phones and reduce the adverse effects. However, several obstacles faced by informal actors can hinder such collaboration. This study explores the inhibiting factors for the collaboration between the informal and formal actors in handling used cell phones. The respondents were 424 informal actors in five areas of the Special Region of Yogyakarta (DIY Province), Indonesia. The results showed that the unavailability of infrastructure and insufficient organization significantly hindered collaboration in the Yogyakarta municipal area. As for the areas of Gunungkidul, Bantul, Kulonprogo, and Sleman regions, there were no significant factors hindering the collaboration. The results of this study can contribute for stakeholders’ consideration related to e-waste handling, primarily used cell phones in Indonesia; thus, the management of used cell phones is safe for the environment and provide economic benefits for the informal actors. Doi: 10.28991/CEJ-2023-09-03-011 Full Text: PDF
Performance of Technical Supervision and Its Evaluation on Transport Constructions
Authors: Suchánek Petr , Dufek Zdeněk
Published: March 2023

The aim and purpose of the research are to analyze the performance of the technical supervision of the investor within the Czech construction industry during the construction, particularly focused on transport line structures. It is about clarifying the meaning and role of technical supervision in the public sector in transportation structures. In the first phase, a literature search is carried out on the current state of performance of the technical survey, and its work content is determined, including the method of its evaluation within the framework of a public contract. On the basis of these conclusions, a questionnaire is designed, which determines the real time-consuming activities during the performance of supervision and, at the same time, examines the tools used in its performance. Conclusions from the questionnaire research are examined, and steps for possible streamlining are proposed. As part of the examination of the proper evaluation of performance, a more suitable model of evaluation of these services is sought based on the previous analysis of the time-consuming nature of the technical supervision activity and according to the existing evaluation methods. Doi: 10.28991/CEJ-2023-09-03-013 Full Text: PDF
Structural Behavior of Steel Reinforced Concrete Joint Under Flexural Loads
Authors: Handhal Mohammed M. , Abdulghani Ali W. , Al-Haydary Montaqa M.
Published: March 2023

This research investigates the behavior of RC beam column joints reinforced with steel sections. The study deals with the strengthening of RC joints by different steel sections. The investigation included a theoretical analysis through a performing of simulation of beam-column joints laced with steel sections by using FEA. Implementation of the parametric study included reinforcing the concrete beam with steel sections in many configurations. Shapes and length were the most variables in this study, and many shapes were used, such as I-section, box section, and plates, beside the concrete compressive strength variable. The most recent study revealed the possibility of the method to enhance the efficiency of the joint in resisting the loads while the offering many additional features such as higher ductility, stiffness, and energy absorption. The results showed that strengthening by the steel section enhanced the flexural strength of the joint, but these enhancements were to a certain limit due to the concrete strength limitation. The ultimate strength enhancement was 49%, which is considered a good index for the joint efficiency. The use of compressive strength in small amounts led to the enhancements being limited due to the weakness of the concrete. Strengthening the flexural side of the beam by adding a steel section requires stronger concrete to provide more contribution for the steel section to resist more flexural loads. The increase in the compressive strength of the concrete made the improvements reach their peaks. Strengthening by I-shaped and box steel sections showed that the enhancement due to the existence of the I section was greater than that of the box one. Doi: 10.28991/CEJ-2023-09-03-015 Full Text: PDF
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
Uso de laserterapia no processo de cicatrização de queimaduras: uma revisão sistemática
Authors: Pereira Isadora Eduarda , Emerick Giovanna Lima , Senra Lukas Peres Tavares
Published: March 2023

Introdução: As queimaduras são lesões que acontecem na pele ou em outros tecidos corporais por trauma térmico, seja ele quente ou frio, podendo ocasionar lesões leves, graves e até mesmo o óbito. Obje
An experimental design approach for investigating the influence of various factors on wax deposition in production tubing and pipelines
Authors: Toyin Olabisi Odutola  , Koyejo Oduola
Published: March 2023

This research work employed the design of experiment approach to investigate the influence of various factors including the inhibition concentration, crude oil temperature and speed of rotation on wax deposition in production tubing and pipelines. A combination of Taguchi orthogonal array of designed experiments with a subsequent application of a standard response surface methodology based central composite design was carried out using the StatEase DesignExpert Software Version 12. The individual effects of variables and its interaction effects towards the dependent variables were studied with the shear rate/degree of viscosity reduction taken as the dependent variable. The results of the study showed that less wax deposition inferred from the degree of viscosity reduction was significantly affected by the crude oil temperature and speed of rotation. The 2FI model was selected based on the significant lack of fit obtained. Model equations were derived based on the results and the predicted values of the response (shear rate/degree of viscosity reduction were obtained at a sufficient degree of correlation. Thus, the Design Expert can be a valuable tool to quantify and detect the special relationships of two of more factors known as interactions regarding how these factors could affect a process, especially for screening purpose.
Chromosomal analysis of pregnancy tissue from women with recurrent early pregnancy loss
Authors: Nazdar Raouf  , Hameed Rekani  , Marwan Zaki
Published: March 2023

Purpose: This study aimed to determine the cytogenetical distribution of chromosomal disorders in couples after recurrent early pregnancy loss. Background: One of the most important causes of pregnancy loss found in around half of the first trimester miscarriages is fetal chromosomal abnormalities, the role of fetal chromosomal disorders needs to be better evaluated. Method: This study was conducted at two hospital and private clinics in Duhok, Iraqi Kurdistan from February 2017 to February 2022, and reviewed retrospectively The study included 150patients with history of Recurrent Early Pregnancy Loss were admitted for curettage because of miscarriage in early pregnancy Patients were divided in two group. Results: The study population included a total of 150 fetal tissue specimens obtained during dilation and curettage after the diagnosis of spontaneous miscarriage. Patients were divided in two groups. Group 1 included 95patients with an abnormal embryonic karyotype in the aborted material. Group 2 comprised 55 patients with a normal embryonic karyotype in the aborted products. Patients with a normal embryonic karyotype in the aborted products were significantly younger (p=0.0147). Conclusion: Young patients suffering from repeated miscarriages have a low probability to find chromosomal disorders in the embryonic tissue. Chromosomal analysis should be offered after previous miscarriages before further diagnostic methods are performed.
Impact of cashew meal (Anacardium occidentale) incorporation on the economic profitability of laying hen production (ISA Brown) in Côte d'Ivoire
Authors: Ouattara Abdoulaye  , Diomande Masse  , Fofana Daouda
Published: March 2023

In Côte d'Ivoire, protein feed in poultry farming is expensive. This study was conducted to evaluate the impact of incorporating cashew meal on the economic profitability of laying hen production (ISA Brown). For this purpose, ISA Brown pullets were selected and fed with cashew meal-based feed. Batches were fed T0 (control), T1 (100% cashew meal), T2 (50% cashew meal) and T3 (95% cashew meal) feed. They were reared for forty-six (46) weeks and subjected to the same prophylaxis (health and medical). The price per kilogram of feed, the production cost and the total investment were impacted by the formulation. The gross profit margin per batch, the sale of livestock products and the economic profitability of the productions were also influenced by the formulation (cashew cake incorporation rate). The price per kilogram of feed (growing, pre-laying, and laying) was 181.04, 192.02 and 204.84 CFA francs (T0), 161.66, 170.02 and 181.84 CFA francs (T1), 170.76, 180.67 and 193.04 CFA francs (T2) and 160.71, 168.72 and 180.69 CFA francs (T3). The total invested was 358296.53 CFA francs (T0), 278625.28 CFA francs (T1), 327834.21 CFA francs (T2) and 269211.67 CFA francs (T3). The sale of livestock products was 551056.66 (T0), 297900 fcfa (T1), 485039.33 fcfa (T2) and 328898.66 fcfa (T3). The economic profitability of production was 1.53 (T0), 1.06 (T1), 1.47 (T2) and 1.22 (T3). The T3 and T2 feeds were the cheapest. The use of cashew meal in animal feed has improved the economic profitability of laying hen production in Côte d'Ivoire and generated significant profit margins.
Life that takes care of us local wisdom of Negeri Besar (Nebes) village community in south Sorong regency
Authors: Hendrik Arwam  , Andoyo Supriantono  , Yolanda Holle  , Yusuf Sawaki
Published: March 2023

The experiences of human life become an important foundation in managing their lives. The experiences that have been chosen become a reference for humans in their actions and eventually become the culture of a society. This culture has been passed down from generation to generation orally. Therefore, along with the changing times and the inclusion of development programs, an appropriate method is needed to describe life and society. The writers choose a cultural ecological approach to describe the NEBES village community in Kokoda District, South Sorong Regency. The residents of Nebes village are known to have adapted to the environment where they live. It is a good picture of a society that lives depending on nature and maintains relationships with the people who live side by side with them. Rewriting the way people think and act is a good way to remind us that life and the values ​​contained therein are what keep us alive.