Self-Potential; Thinking Style, Emotional Response, and Communication Patterns for New Students at the University of Lampung (UNILA) in 2021
Muhammad Nurwahidin, Moch Johan Pratama
Page Numbers : 192-196
DOI : 10.36348/sjce.2022.v06i07.003
The purpose of this study is (1) to analyze how the type of thinking style of UNILA new students in 2021. (2) to analyze how the type of emotional response of UNILA freshmen in 2021. (3) to analyze the types of communication patterns of UNILA new students in 2021. Research this was carried out simultaneously with the moment of orientation for new students at the University of Lampung in 2021. Descriptive quantitative research methods were used in this study. The subjects in this study were 5,065 new UNILA students in 2021. The survey method was used in this study. The data were analyzed using descriptive qualitative analysis using the SPSS version 22 application tool. The researcher found that (1) the majority of new students (43.3%) had a reflection type of thinking style. (2) the majority of new students (38.7%) had emotional response pattern with empathic type. (3) the majority of new students (43.4%) have a patterned communication pattern.
Original Research Article
July 19, 2022
Impact of Climate on the Environment: Effect of Driving Rain on Buildings and Monuments in Port Harcourt, South-South Nigeria
Alexander BC, Irimiagba Gibson Francis
Page Numbers : 184-191
DOI : 10.36348/sjce.2022.v06i07.002
This work is an attempt to understand the effect of climate in an environment, therefore the effect of driving rain on buildings and on monuments is considered a case study. The study area is Port Harcourt Metropolis, a subequatorial climate environment, located in southern part of Nigeria. The study made use of questionnaire, and response were analyse using a descriptive statistical tool (simple percentage and pie chart). The study observed among other things that driving rain defaces buildings and monuments. Furthermore majority of those interviewed are of the opinion that driving rain has made them spend more money in building and monument maintenance as the case may be. It was also observed that driving rain contributes to rill erosion within and around buildings and monuments. The study also finds out that driving rain affects the strength of buildings negatively, and that electrical appliance can also be affected. This work suggests among other things, that water resistance paints and material should be used on buildings and monuments. The windward side of buildings should be designed in a way that the effect of driving rain should be minimal on the wall or windows. Furthermore, materials like books, cloths and other weather sensitive materials should be kept away from the damp windward side of the rooms. This implies that wardrobes should not be fixed or constructed in the windward side of the building. The study suggested that strong materials and standard specification of concrete mixture and standard original materials should be used in building construction especially in a humid environment like Port Harcourt metropolis. Finally, geographical factors need to be considered before building construction and professionals should be engaged in the business of building of houses and monuments construction to avoid collapse and damages.
Original Research Article
July 5, 2022
Rheological Characterization of Asphalt Binders Containing Rejuvenated Reclaimed Asphalt Pavement
Kamaluddin Kamal, Amin Sami Amin Hamdi, Shaher Zahran Zahran
Page Numbers : 173-183
DOI : 10.36348/sjce.2022.v06i07.001
The use of reclaimed asphalt pavement (RAP) in freshly hot mixed asphalt (HMA) can save on material costs, preserve energy, and protect the environment. Employing limited amount of RAP in the production of asphalt mixes can result in similar performance as normal mixtures. However, adding more RAP can reduce the HMA’s mixing efficiency and could make the asphalt mixture more susceptible to fatigue and low-temperature cracking. Vegetable oil can act as a rejuvenator and reduce the HMA deficiencies with a high RAP percentage. This study investigated the potential effect of two vegetable oils; namely soybean oil (SOY) and sunflower oil (SnF), as rejuvenators on the properties of asphalt binders that contain 40% of RAP binder. To determine the optimum dosage of the rejuvenators (SOY and SnF), the properties of the rejuvenated RAP binders were carried out by conducting the penetration, softening point, viscosity, dynamic shear rheometer (DSR), and bending beam rheometer (BBR) tests. The test results indicated that vegetable oils could provide better fatigue and low-temperature cracking resistance with acceptable rutting performance. Furthermore, it is observed that, for the abovementioned properties, the addition of the 6%SOY and 3%SnF were more feasible in restoring the 40RAP binder to its original properties.
Original Research Article
June 30, 2022
Identification of Access to Clean Water in Slum Management and Prevention Area, Bandar Lampung City, Indonesia
Martina Anggisilova, Fery Hendi Jaya, Rudy
Page Numbers : 166-172
DOI : 10.36348/sjce.2022.v06i06.003
The increase in the population in a city and the development of development in all fields will result in increased water demand. Therefore, efforts are needed to increase the availability of clean water which will be useful for improving people's welfare. This research was conducted to examine more deeply related to access to clean water in slum communities by examining the problems 1) how much access to clean water and how to get clean water; 2) how much clean water is available; and 3) how much clean water is needed. The study was conducted in four villages in Bandar Lampung City, Indonesia, namely Sawah Lama Village, Sukamenanti Baru Village, Kota Sepang Village, and Rajabasa Pemuka Village. Data were collected through a process of observation, interviews, and analysis of secondary data, such as village data, population numbers, and others. The data were then analyzed using triangulation techniques to obtain a comprehensive and valid picture. The results of this study indicate that the greatest need for clean water is found in the Sawah Lama village at 27,021.40 liters/day. Information was also obtained that the highest use of access to clean water was drilled wells with a user percentage of 84.37% in Sukamenanti Baru Village, 69.40% in Sawah Lama Village, 74% in Kota Sepang Village, and 100% in Rajabasa Pemuka Village. The availability of water based on calculations is still sufficient, but for Kota Sepang Village there is a shortage during the dry season.
Original Research Article
June 9, 2022
Effect of Corrosion on Bond Strength of Tension Lap-Splices
Ayman Shihata
Page Numbers : 154-165
DOI : 10.36348/sjce.2022.v06i06.002
This study aimed to investigate the effect of corrosion on the bond strength of tension lap splices in reinforced concrete beams. The test variables were the corrosion level (0%, 2.5% and 5.0%) and the concrete cover to bar diameter (c/d) ratio (c/d=1.5, 2.0, and 2.67). The observed failure mode was splitting of the concrete cover on the tension side. An accelerated corrosion technique was used to corrode the reinforcing lap-spliced bars in a reasonable time frame. Corrosion did not affect failure mode but caused a reduction in the ultimate strength and deflection at failure. The bond strength was reduced by 15% to 26% at 2.5% corrosion level and by 21% to 38% at 5% corrosion level depending on the c/d ratio. A model was proposed to predict the bond strength of corroded tension lap-splices in concrete. The model results correlated well with the measured bond strength.
Original Research Article
June 5, 2022
The Influence of Fraud Triangel and Personal Attitude on the Fraud Tendency to use School Operational Assistance (SOA) Funds (Case Study at Elementary School in Cikarang Barat District, Bekasi Regency)
This study aims to examine the effect of Fraud Triangel, and Personal Attitude on the tendency of fraudulent use of SOA funds (a case study in an elementary school in West Cikarang District, Bekasi Regency). The population of this study was 45 public elementary schools in West Cikarang sub-district. Researchers took the entire population as a sample. This research method is a quantitative method. Based on the results of the research and discussion conducted, it can be concluded that the results of the analysis and hypothesis testing indicate that H1 is rejected and H2 is accepted. This finding implies that in general the Fraud Triangel (X1) has no effect on the use of SOA funds (Y) in Elementary School Education institutions, but Personal Attitude (X2) affects the use of SOA funds (Y) in Elementary School Education institutions. The results of the questionnaire illustrate that there is no fraudulent fraud found in the financial statements. This proves the results of the empirical analysis on the Sig value test. Sig. for the effect of Fraud Triangel (X1) on (Y) the use of SOA funds is 3.50 > 0.05 and the t value is 7.39 > t table 3.29, so it can be concluded that H1 is rejected which means there is no influence of Fraud Triangel (X1) on (Y) trend fraudulent use of SOA funds. Based on the results of hypothesis testing that has been carried out, it is found that Personal Attitude (X2) has an effect on the use of SOA funds, this is known from the value of Sig. for the influence of Personal Attitude (X2) on Y the tendency of fraudulent use of SOA funds is 0.005 < 0.05 and the t value is 2.895 < t table 3.295, so it can be concluded that H1 is accepted which means that there is an influence of Personal Attitude (X2) on (Y) the use of funds. SOA. Personal Attitude has a Positive Effect on the use of SOA Funds.
Original Research Article
May 20, 2022
Effect of Nonlinear Modeling of Beam-Column Joint on Pushover Analysis
Amr.W.Sadek, Mohammed Moiz Khan
Page Numbers : 127-144
DOI : 10.36348/sjce.2022.v06i05.002
The present paper is concerned with the seismic risk assessment of buildings in the Kingdom of Saudi Arabia. A critical review of the existing literature is presented to identify the shortcomings of extant studies. None of the extant studies considered nonlinear action of the beam-column joint (BCJ) but rather they dealt with BCJ as a rigid element for simplicity and the only plastic hinging has been considered in beams and/or columns. Hence the main focus of this paper is to demonstrate the significant effects of the nonlinear action of BCJ in the pushover analysis and in turn the inadequacy of all previous studies which overlooked such effect. In this study, nonlinear static pushover analysis is performed on two-dimensional RC frames of existing buildings in Jeddah city, with and without using macro node elements and pushover curves are compared. The beam-column joint modelling approach adopted in this study is through macro node element which accounts for failure due to shear collapse of the joint, concrete crushing, flexural and/or shear plastic damage of the beams or columns connected and bond-slip failure. The results clearly indicate that the RC frame in which the beam-column joints were modeled using a macro node element, tends to have lesser base shear values and higher displacement capacity when compared to the RC frame modeled without using the macro node. Furthermore, the status of plastic hinges developed in building frames modeled without using macro node element was found to be within the Immediate occupancy (IO) performance level, but this hinge status drastically changed to Collapse prevention (CP) performance level when BCJ was modeled using macro node. Hence, the results highlight that the nonlinear action of beam-column joint has a significant effect on the nonlinear response of a structure.
