Positive Coefficient Values Research Articles

Temperature‐Driven Topological Transformations in Prestressed Cellular Metamaterials

AbstractStimuli‐responsive materials are able to alter their physicochemical properties, e.g., shape, color, or stiffness, upon exposure to an external trigger, e.g., heat, light, or humidity, exhibiting environmental adaptability. Their capacity to undergo shape reconfiguration, pattern transformation, and property modulation enables multifunctionality. In this work, two strategies are harnessed, i.e., prestressed assembly and temperature‐dependent stiffness reversal, to introduce a class of temperature‐responsive metamaterials capable of undergoing topological transformations, endowing them with smart functionality. Through a combination of mechanics theory, numerical simulations, and thermomechanical experiments, the physical mechanisms underlying the temperature‐triggered topological transformations leading to pattern switches are first elucidated, and then the insights are leveraged to demonstrate tunable bandgaps and robotic capturers. These findings reveal the attainment of giant negative and positive values of coefficient of thermal expansion, accompanied by isotropic expansion and shrinkage under thermal actuation within a fairly rapid timeframe, below 6 s. The strategy here presented is versatile as it relies on a pair of off‐the‐shelf 3D printable materials, can be up‐ and down‐scaled, and can also be realized through other physical stimuli, e.g., light and moisture, paving the way for use in multifunctional applications, including stimulus‐triggered morphing devices, autonomous sensors and actuators, and reconfigurable soft robots.

Complex Structure, Chemical Bonding, and Electrical Transport Properties of a La-Doped Zintl Phase

The La-doped ternary Zintl phase Ca10.43(3)La0.57Sb9.69(1) was successfully synthesized by arc melting, and the title compound adopted the Ho11Ge10-type structure with a tetragonal I4/mmm space group (Z = 4, Pearson code tI84). The complex crystal structure is composed of (1) the four different kinds of cationic Ca or Ca/La mixed sites surrounded by seven or nine Sb atoms and (2) the 3-dimensional cage-shaped anionic frameworks built by the other two types of Sb atoms. In particular, the La dopants preferred to occupy the Ca4 and Ca1 sites, and this specific cationic-site preference can be rationalized by both electronic and size-factor criteria. Moreover, the ca. 16% occupational deficiency observed at the Sb3 site was attributed to the energetically unfavorable antibonding character of the Sb3–Sb3 bond in the [Sb3]4 tetramers, according to a series of DFT calculations. A crystal Hamilton overlap population curve analysis also proved that the title compound Ca10.43(3)La0.57Sb9.69(1) tried to keep the valence electron count below 71.02 to remain energetically stable in the Ho11Ge10-type phase. Measurements of temperature-dependent electrical transport properties revealed that the La doping indeed enhanced the electrical conductivity of Ca10.43(3)La0.57Sb9.69(1) compared to the un-doped Ca11Sb10. However, unlike other rare earth metal (RE)-doped compounds in the Ca11−xRExSb10 (RE = Nd and Sm) system that display semiconducting behavior, the La-doped title compound showed poor metallic electrical properties. The positive values of Seebeck coefficients indicated the p-type character of the title compound despite the successful n-type La doping, and this should be attributed to Sb deficiency.

Hubungan Tingkat Kesadaran Pengguna terhadap Cybercrime dan Pengaplikasian Fitur Peringatan Phishing dan Malware Pada Google Browser

The high number of cybercrime cases shows the need for user awareness to avoid various crimes on the internet. This research aims to determine whether there is a relationship between the level of user awareness of cybercrime threats and the level of application of the phishing and malware warning features on the google browser. The researcher uses a quantitative approach. Data was obtained from questionnaires and analyzed using the Pearson coefficient correlation method. By using this method, a positive correlation coefficient value was found between the two variables. The positive correlation coefficient value indicates that there is a relationship between the two variables.

Wavelet-based vibration denoising for structural health monitoring

In the context of civil engineering applications, vibration responses are complex, exhibiting variations in time and space and often containing nonlinearity and uncertainties not considered during data collection. These responses can also be contaminated by various sources, impacting damage identification processes. A significant challenge is how to effectively remove noise from these data to obtain reliable damage indicators that are unresponsive to noise and environmental factors.This study proposes a new denoising algorithm based on discrete wavelet transform (DWT) that addresses this issue. The suggested method offers a strategy for denoising using distinct thresholds for positive and negative coefficient values at each band and applying denoising process to both detail and trend components. The results prove the effectiveness of the technique and show that Bayes thresholding performs better than the other techniques in terms of the evaluated metrics. This suggests that Bayes thresholding is a more accurate and robust technique for thresholding compared to other common techniques.

Economic Effects of Fertilizer Subsidy on Major Crops Productivity in Pakistan

Based on time series data set (1990-2022) this study was conducted to estimate the economic effects of fertilizer subsidies on major crops productivity in Pakistan. Majority (90%) of the farmers having small land holding size are not in a position to apply inputs like fertilizer which incurred 15-20% of total cost of production. Three types of analysis were employed i.e., Trend analysis, Correlation analysis and Regression analysis. The trends in growth rate of fertilizer use along with trends in growth rate of respective crop yield have been sketched with different trends. The correlation analysis between fertilizer subsidy and yield (kg ha-1) of major crops i.e. wheat, rice, sugarcane, cotton and maize has been calculated with positive correlation coefficient values as 0.459, 0.468, 0.351, 0.224 and 0.551 respectively. The simple linear regression analysis depicted that a rupee of one billion PKR subsidies is significantly increased the crop fertilizer usage (000 tons nutrients) of wheat (37.10), rice (14.97), sugarcane (13.60) and cotton (40.12) as well as increased the crop yield (mound acre-1) of wheat (0.26), rice (2.04), sugarcane (32.93), maize (62.17) and cotton (0.19) respectively which indicated that the yield of the crops is also positively affected by fertilizer use and fertilizer subsidy. The elasticity of yield with respect to fertilizer subsidy also confirmed the regression analysis results. Although yield is inelastic to subsidies; however, one % increase in fertilizer subsidy resulted in 0.043, 0.061, 0.044, 0.022 and 0.207 (%) increased in yield of wheat, rice, sugarcane, cotton and maize respectively. Based on positive values of coefficients, it is concluded that the fertilizer subsidies should be distributed more efficiently to enhance the productivity of crops.

The Influence of Financial Literacy and Financial Behavior on the Financial Performance of SMEs: A Regression Analysis Study in Indonesia

The method used in this research is the regression analysis method with the variables used, namely Financial Literacy (X1), Financial Behavior (X2) on Financial Performance (Y). This research uses quantitative methods and uses a sample of 118 respondents who are SME owners spread throughout Indonesia. The research uses SPSS software to assist in data processing. From the results of this research it can be concluded that the t test results obtained a significant value for the financial literacy variable of 0.019 and a regression coefficient value of 0.209. The significance value <0.05 and the positive regression coefficient value indicate that financial literacy has a positive effect on financial performance . The results of the t test obtained a significant value for the financial behavior variable of 0.005 and a regression coefficient value of 0.200. The significance value <0.05 and the positive regression coefficient value indicate that financial behavior has a positive effect on financial performance. These findings also show that financial literacy has a positive effect on the performance of SMEs and financial behavior has a positive effect on the financial performance of SMEs in Indonesia

THE RELATIONSHIP BETWEEN RELIGIOSITY AND SELF EFFICACY WITH ANXIETY IN FACING THESIS EXAMS IN FINAL SEMESTER STUDENTS OF ISLAMIC GUIDANCE AND COUNSELING STUDY PROGRAM, KH MUKHTAR SYAFAAT UNIVERSITY

This researcher examined the relationship between religiosity and self- efficacy and anxiety about facing thesis exams in final semester students of the Islamic Guidance and Counseling Study Program at KH Mukhtar Syafaat University. This research was motivated by students' anxiety in facing the thesis exam. One of the factors that influence student anxiety is religiosity and self-efficacy. The aim of this research is to find out how religiosity is related to anxiety about facing the thesis exam. To be able to find out how religiosity and self-efficacy are related to anxiety facing the thesis exam. This research uses quantitative research methods. Quantitative research emphasizes analysis of numerical data processed using statistical methods. The method used in this research is the correlational method. Data was collected through questionnaire techniques, with different data collection strategies for two groups of respondents: using Google Forms for respondents who were not in the boarding school and offline questionnaires for respondents who were in the boarding school. The results obtained in this research are the correlation coefficient value of 0.478 contained in the table, it can be concluded that there is a positive relationship between religiosity and anxiety. This means that if a person's level of religiosity increases, it is likely that their level of anxiety will also increase, and vice versa. The positive correlation coefficient value of 0.679 concludes that there is a strong positive relationship between self-efficacy and anxiety. This means that if a person's level of self-efficacy increases, it is likely that their level of anxiety will also increase, and vice versa. The correlation coefficient value between X1 (religiosity) and X2 (self efficacy) with Y (anxiety) is 0.695. This value is positive, which indicates that there is a positive relationship between religiosity and self-efficacy on anxiety levels. This means that if the religiosity value increases, anxiety also tends to increase, as does self-efficacy. Overall, religiosity, self-efficacy, and anxiety have a unidirectional relationship. The correlation coefficient value of 0.695 is included in the strong category according to the r value interpretation table, which is between 0.600 to 0.799.

Ab-initio investigation of structural, electronic, thermoelectric and optical properties of Full-Heusler X2MnB (X = Ti, Zr) for energy harvesting applications

In this manuscript comprehensive first-principles calculations have been presented for Full-Heusler X2MnB (X = Ti, Zr) compounds. This work includes detailed observations of the structural stability, origin of the transport phenomenon, optical properties, and electronic response. Structural parameters support the previous findings by confirming structural stability in the non-magnetic phase. Ti2MnB (Zr2MnB) valence band maxima and conduction band minima have bandgaps of 0.217 (0.301) eV and 0.181 (0.209) eV for PBE-GGA (mBJ) approximations which lie between L-L symmetry points. Due to the comparative measurements of the two states, the DOS results show that the Ti1/Zr1, Ti2/Zr2 Mn eg, and t2g states mainly contribute to the valence band region for Ti2MnB and Zr2MnB alloys, confirming their ionic nature. The computation of the overall electronic parameters’ reveals semiconducting nature. Thermoelectric properties have been calculated as a function of temperature in the 100–1200 K range. The positive values of Seebeck coefficients specify p-type character of X2MnB While at 300 K, Zr2MnB and Ti2MnB showed the highest Seebeck coefficients, measuring roughly values of 268 (µK/V) and 243 (µK/V), respectively. These values suggest that the material exhibits high thermoelectric performance. Though high optical absorption coefficient and low reflectivity in the visible and ultra violet regions, confirms use of these materials in solar cell applications. These findings suggest that material holds great potential for use in thermoelectrical applications which can support in upcoming experimental considerations.

Investigating novel Mo2X3S (X = Se, Te) materials: probing the influence of chalcogen substitution on electronic, optical, and thermoelectric properties

The excellent thermal performance and adjustable optoelectronic characteristics distinguish the ternary semiconductors. Using the state-of-the-art density functional theory, the optoelectronic, and thermoelectric characteristics of new Mo2X3S (X = Se, Te) ternary chalcogenides are studied. The predicted band gap values with TB-mBJ for Mo2Se3S and Mo2Te3S materials were 1.41 eV and 2.10 eV, respectively. For their possible employment in optoelectronic applications, the components of the complex dielectric function and the vital optical characteristics were calculated and studied. For an increase in the band gap and with the replacement of Se to Te, the peaks in ε 1(ω) shifted to higher energies. Mo2Se3S and Mo2Te3S both show stronger absorption in the UV and visible ranges. Based on the observed peaks in the reflection spectrum, they may used as ultraviolet-reflecting materials with good efficacy. Both Mo2Se3S and Mo2Te3S have positive Seebeck coefficient values, they exhibit p-type conduction. The Mo2Te3S material displays a maximum Seebeck coefficient at about 500 K compared to Mo2Se3S, which leads to a maximum ZT.

The Impact Of Endorphin Massage On The Efficient Production Of Postpartum Breast Milk In TPMB Sulastri, Pagelaran District, Pringsewu Regency In 2024.

Initiating breastfeeding within the first day of delivery has been shown to decrease the likelihood of newborn mortality. It is specifically demonstrated to provide exclusive protection against diarrhea, respiratory infections, and pneumonia ASI. The project seeks to investigate endorphin massage's impact on smoothness development in postpartum women at TPMB Sulastri, S.ST., M.Kes in 2024.ASI stands for Automatic Speech Recognition. This research employs a quasi-experiment design utilizing a pretest-posttest control group strategy. The sample included of 14 participants in the intervention group and 14 participants in the control group. Purposive sampling techniques were employed. The instrument utilizes Standard Operating Procedures (SOP) and checklist sheets. A three-day Endorphin massage treatment was administered and assessed using the Mann-Whitney test. The study found that 50% of individuals had a moderate frequency of meal intake. The utilization rate of non-hormonal contraceptives was 71.4%. The weight of newborns does not exceed 100% of the BBLR. The gestational age at the time of labor is 100% accurate. The mean milk output of the intervention group was 2.6 before and 7.5 after. The mean of the control group was 2.5 before and 5.2 after. The endorphin massage significantly impacted the efficient production of breast milk in postpartum moms. This was evidenced by a p-value of 0.000 (< 0.05) and a positive Correlation Coefficient value of 0.88, indicating a highly robust association between the two variables. Ultimately, endorphin massage has a significant impact on facilitating the efficient production of breast milk in mothers throughout the postpartum period. It is desirable for lactating postpartum women to regularly engage in endorphin massage to ensure the continuous and unobstructed flow of breast milk during the entire two-year duration of breastfeeding.

The impact of thermophysical properties on eflornithine drug solute in acetone and ethyl acetate solvent interactions at varying concentrations and temperatures

The study was conducted on the impact of thermophysical properties on eflornithine drug solute–solvent interactions in aqueous ethyl acetate and acetone at different concentrations and temperatures. The aim of this study is to enhance the understanding of eflornithine’s behavior in different solvents, which is crucial for its effective use in pharmaceutical applications. The density, molar volume, viscometric, and conductometric characteristics of the eflornithine drug solutions (0.025, 0.05, 0.075, 0.1, and 0.125 mol/kg) in acetone and 25% (v/v) aqueous ethyl acetate were measured within a temperature range of 298.15 K–318.15 K. Based on the determined density parameters, the following parameters were assessed: viscosity (η), equivalent molar conductance, limiting apparent molar volume (V0φ), apparent molar volume of transfer (V0φtr), and apparent molar volume (Vφ). The Masson empirical relationship and the viscosity-to-Jones-Dole (JD) equation were used to evaluate the partial molar volume (Vφ), experimental slope (SV), viscosity, and density data. Temperature and concentration were used to determine each parameter. For each set of dilutions, conductometric studies were conducted in both study solvents. The gathered data was analyzed in order to evaluate the ion–solvent interactions. The Walden product Λomηo’s positive temperature coefficient values indicate that the drug eflornithine functions as a structural modifier in acetone and aqueous acetyl acetate systems. The structure-making and breaking characteristics of the polar solvents acetone and ethyl acetate were identified.

Theoretical insight into physical characteristics of lead-free perovskites Rb2TlSbX6 (X = Cl, Br, I) for optoelectronic devices.

Novel optoelectronic and thermoelectric properties with broad compositional range, non-toxic nature and structural stability make halide-based double perovskites fascinating for flexible optoelectronic devices. In this work, the structural electronic, optical and transport properties of Rb2TlSbX6 (X = Cl, Br, I) were studied using density functional theory for optoelectronic devices. The elastic analysis demonstrates ductile nature, mechanical stability, anisotropic behaviour and feasibility for flexible optoelectronic devices. The band structure study using Tran-Blaha-modified Becke-Johnson (TB-mBJ) potential shows that all studied materials have direct bandgap. In addition, the bandgap of Rb2TlSbCl6 is more appropriate for optoelectronic devices. The small loss and maximum absorption in visible regions make these materials prime candidates for optoelectronic devices. The transport features indicate that all the studied double perovskites reflect p-type semiconducting behaviour as highlighted by positive Seebeck coefficient values. Furthermore, the high power factor values of Rb2TlSbX6 (X = Cl, Br, I) double perovskites make them suitable for thermoelectric device applications at high temperatures. Based on electronic optical and thermoelectric properties Rb2TlSbCl6 is the best candidate for flexible optoelectronic devices. In this paper, structural optimization of Rb2TlSbX6 (X = Cl, Br, I) double perovskites was conducted utilizing the Wien2k software based on first principle calculations with Perdew-Burke-Ernzerhof's generalized-gradient approximation (PBE-sol approximation). The TB-mBJ potential was employed to compute the accurate band gap of studied materials. The thermoelectric properties are evaluated with BoltzTraP code, showing a predominance of P-type charge carriers in all studied perovskites. This methodological strategy verifies the material's remarkable stability and optical properties and offers a solid framework for examining its potential in optoelectronic devices.

The Effect of Supervisory Performance on The Quality of Mathematics Education In Grade II Students of EBC Turiscai

Improving the performance of supervisors and the quality of student education has a positive relationship because a maximum and good learning style will provide good quality education. The hypothesis of the supervisor performance variable (X) on the quality of education (Y) of students in Ensino Basico 3o Ciclo Turiscai shows that there is a positive and significant influence individually because the ttable > is 7,937> 2,000 then Ha is accepted. This means that better supervisor performance (X) will provide higher quality education for students at Ensino Basico 3o Ciclo Turiscai. From the results of the calculation of a simple regression correlation analysis, it shows that the coefficient (r) of 0.722 or 72.2% means that the supervisory performance variable (X) has a fairly close relationship or has a strong enough correlation with the variable Education quality (Y) in Ensino Basico 3o Ciclo Turiscai and the coefficient of determination (r2) of 0.521 or 52.1% means that the contribution or contribution of supervisor performance (X) is given to the variable Education quality (Y) of 0.521 or 52.1% while The remaining 47.9% was influenced by other factors. Based on the calculation results with a simple linear regression analysis model, the value is obtained that the supervisory performance variable (X) shows a unidirectional or positive regression coefficient value of 0.628 against the education quality variable (Y). This can be interpreted that the performance of supervisors (X) affects the quality of education (Y) by 0.628 or 62.8% in Ensino Basico 3o Ciclo Turiscai.

Presence of the knockdown resistance (kdr) mutations in the head lice (Pediculus humanus capitis) population in the North of Iran.

Head lice infestation continues to be a major health problem worldwide. In order to solve this problem, frequent use of pediculocides has caused growing resistance among head lice population. This study aims to investigate the presence of the knockdown resistance (kdr) mutation in the head lice population in northern Iran. Adult head lice were collected from 115 infested individuals referring to the health centers in different parts of Mazandaran province, northern Iran. 38 samples were randomly selected, and Polymerase chain reaction (PCR) was used to amplify a 332-bp and ⁓ 900-bp fragment of the α-subunit of the voltage-sensitive sodium channel (VSSC) gene. According to the analysis of a 332-bp fragment of the VSSC gene, the frequency of kdr T917I mutation including homozygous susceptible (SS), heterozygous resistant (RS), and homozygous resistant (RR) were 45.83%, 12.5%, and 41.66%, respectively. The total frequency of the resistance allele was 54.16%. The results of the 900-bp fragment of the VSSC gene showed two new mutations in the IIS1-2 extracellular loop (H813P) and IIS2 (S825R) and old well-known kdr mutations (M815I-T917I-L920F). The results of Hardy-Weinberg's exact equilibrium test showed that the frequency of genotypes in the studied areas is different from expectations. Moreover, a positive inbreeding coefficient value (F is >0) was found in studied areas which indicated an excess of homozygotes. Overall, the results showed a high frequency of resistant alleles in the northern region of the country. Therefore, it is necessary to develop appropriate control programs for the treatment of pediculosis.

The influence of heavy doping of TiCoSb intermetallic semiconductor with Cr atoms on structural, kinetic and energetic properties

The structural, electrokinetic, and energetic properties of the TiСо1-xCrxSb semiconductor obtained by doping TiCoSb with Cr atoms introduced into the structure by substituting Co atoms in the crystallographic position 4c were studied. It was shown that in TiСо1-xCrxSb the structural defects of donor and acceptor nature are generated simultaneously in different ratios depending on the impurity concentration. At concentrations of х ≥ 0.02, the conductivity of TiСо1-xCrxSb has a metallic character, and the contribution of current carrier scattering mechanisms to the value of electrical resistivity is of the same order as changes in the concentration of current carriers. It was established that at all temperatures in the range of concentrations x = 0–0.02, the rate of generation of donors exceeds the rate of generation of acceptors, and at concentrations x > 0.02, on the contrary, the rate of generation of acceptors is greater than that of donors. This is indicated by the positive values of thermopower coefficient α(х,Т) of TiСо1-xCrxSb for х > 0.03.

Effect of Bank Credit to the Private Sector on the Performance of Manufacturing Sector in Nigeria

The study investigated the effect of bank credit to the private sector on the performance of manufacturing sector in Nigeria, from 1981 – 2021. The objective of the study is to determine the effect of bank credit to the private sector (CPS) on the manufacturing output in Nigeria. To carry out the study, data were sourced from the Central Bank of Nigeria statistical bulletin and National Bureau of Statistics for various years. The dependent variable for the study was manufacturing output while the proxies for exploratory variable include; credit to the private sector (CPS); interest and exchange rates. For analysis and estimation, Autoregressive Distributed Lag (ARDL) method was adopted. Augmented Dicker Fuller (ADF) tests for stationarity showed that the variables were integrated at first level while ARDL Bound tests established a cointegration relationship of the variables. The result of the study revealed that credit to the private sector (CPS), interest rate; and exchange rate (independent variables) on the aggregate accounted for 93.9% of the total variations on manufacturing output (dependent variable) in Nigeria during the study period while 6.1% was due to stochastic error. The result further found out exchange rate had a positive coefficient value and a significant impact on manufacturing output in Nigeria during the period of study while other explanatory variables that include credit to the private sector and interest rate were statistically insignificant on manufacturing GDP during the study period. On the basis of the findings, the researcher recommends that Central bank of Nigeria as an apex bank should apart from using both direct and indirect controls should strengthen the use of moral suasion to encourage banks not to relent in granting the sector as the government endeavours to diversify the revenue sources of the economy. Secondly, government and Central Bank of Nigeria (the apex regulatory body of banks) should take bold steps and use all necessary economic and financial policies and regulations to make lending a single digit interest rate in Nigeria especially in a critical sector like agriculture.

Pengaruh Terpaan Iklan di Instagram terhadap Minat Pengunjung Pariwisata di Dusun Semilir

This research aims to prove whether there is an influence of advertising exposure and brand image on Instagram on the interest of tourism visitors to Dusun Semilir. The study was conducted by distributing questionnaires to 100 respondents who are followers of the Instagram account @dusunsemilir. The respondents answers were analyzed using multiple linear regression and normality tests. The results of this study show through statistical tests that there is a positive relationship. The positive regression coefficient values of X1 (advertising exposure on Instagram) and X2 (brand image), which are 0.335 and 0.396 respectively, indicate a direct relationship with Y (interest of Dusun Semilir visitors) according to the AISAS model. The R square value calculation of 0.543 shows the influence of variable X1 and X2 on Y by 54.3%.

PENGARUH PERCEIVED ORGANIZATIONAL SUPPORT DAN PENGARUH KOMUNIKASI INTERPERSONAL TERHADAP KINERJA KARYAWAN

In maintaining the sustainability of the company, human resources play a very important role. Therefore, the company needs to provide support to employees so that they feel valued, which will ultimately have a positive impact on their development and performance. This study aims to identify the influence of interpersonal communication and organizational support on employee performance at Tirta Terubuk Company in Bengkalis Regency. The results of this study indicate that Perceived Organizational Support partially affects Employee Performance, with a t-value of 3.220 > 1.6779 and a significance level of 0.039 < 0.05, as well as a positive regression coefficient value of 0.075. Interpersonal Communication partially affects Employee Performance with a t-value of 2.823 > 1.6779 and a significance level of 0.015 < 0.05, along with a positive regression coefficient value of 0.190. In simultaneous testing, Perceived Organizational Support and Interpersonal Communication have a simultaneous effect on employee performance variables of 65%, while the remaining 35% is influenced by other factors.

Assessing actual usage and satisfaction factors of Microsoft Teams in online learning

This study examines the factors influencing students’ online learning using Microsoft Teams at the PLN Institute of Technology. Using primary data from 301 students, the study found that the use of Microsoft Teams improved student achievement and learning performance during the pandemic. The structural equation model (SEM) method tested the model with low validity, with all variables having an AVE value more than 0.5 and higher than the cross-loading factor valid, the outer model analysis demonstrated good convergent validity. Dependability and trustworthiness were shown by the composite reliability rating, which was over 0.70. Both perceived usefulness (PU) and perceived ease of use (PEOU) were shown to have a strong correlation, and the inner model analysis revealed positive path coefficient values without any weak variables. These results supported by hypothesis testing imply that lecturers can modify their curricula to enhance student performance in the event of a pandemic. There was shown to exist a strong relationship between the perceived ease of use and perceived usefulness.

MODELING AND EVALUATION OF THE STRENGTH PROPERTIES OF OKE-BALE SOFT SOIL AMENDED WITH CALCIUM CHLORIDE SALT

This research aimed to model and assess the impact of calcium chloride salt (CCS) on the Oke Bale soft soil, known as Lateritic soil, in Osogbo, Nigeria, as a potential pavement material due to high cost of conventional materials. The conducted laboratory tests included particle size distribution, Liquid limit (LL), Plastic limit (PI), and Plasticity index (PI), compaction (Maximum dry density (MDD); Optimum moisture content (OMC) with compactive efforts of British Standard Light, West Africa Standard, and British Standard heavy, and unsoaked California bearing ratio (CBR) on both Oke bale soft soil and modified soil. The soft soil underwent stabilization with varying concentrations of CCS at 0, 4, 8, 12, and 16%. The results were analyzed using regression analysis and Analysis of Variance (ANOVA). The findings indicated advancement in the gradation of lateritic soil as the percentage of CCS salt increased. Additionally, the PI lessened from the value of 14.68% in the regular lateritic soil to the value of 11.49% at 12% CCS content, afterward amplified to the value of 15.6% at 16% CCS content. Simultaneously, the LL of the natural lateritic soil decreased from 60.05% to 35.55% at 16% CCS content. The MDD of original lateritic soil for BSL, WAS, and BSH decreased from 1.63 to 1.45 Mg/dm³, 1.66 to 1.48 Mg/dm³, and 1.69 to 1.52 Mg/dm³ at 4% CCS content, subsequently increasing up to 16% CCS, respectively. Although the OMC amplified from 19.47% to 24.0%, 18.22% to 22.73%, and 17.44% to 21.85% at 4%, it later increased up to 16% CCS, respectively. At 8% CCS content, the CBR value improved from 13.22% to 24.65%, 14.44% to 26.28%, and 15.68% to 28.62% for BSL, WAS, and BSH compactive effort, respectively. Regression analysis indicated that grading properties, MDD, LL, PF, and PI influenced strength qualities of Oke-bale lateritic soil amended with CCS, with positive coefficient values. Furthermore, regression analysis suggested a solid bond between the measured and predicted values of CCS-LS. However, statistical significance was shown in the lateritic-CCS mixed analyses of variance during the duration of the test. Based on the outcome of CBR test, 8% CCS-lateritic soil mixture could be effectively utilized to enhance low-traffic roads.