Analisis Adopsi Situs Airbnb Menggunakan Technology Acceptance Model (Tam)

Penelitian ini merupakan penelitian kuantitatif dengan analisis data deskriptif dan kausal. Responden yang diteliti dalam penelitian ini berjumlah 407 pengguna situs Airbnb yang diperoleh dengan teknik sampling purposive. Data yang terkumpul dari sembilan pertanyaan kuisioner kemudian diolah menggunakan teknik analisis data Path Analysis. Hasil penelitian menunjukkan bahwa terdapat pengaruh yang signifikan antara Perceived Ease of Use terhadap Perceived Usefulness, Perceived Usefulness terhadap Behavioral Intention, Perceived Ease of Use terhadap Behavioral Intention, serta Perceived Usefulness dan Perceived Ease of Use terhadap Behavioral Intention. Untuk perbaikan, Airbnb sebaiknya tetap mempertahankan dan mengutamakan unsur manfaat yang diberikan Airbnb untuk para penggunanya karena memiliki pengaruh yang paling tinggi terhadap minat seseorang dalam meggunakan Airbnb dan meningkatkan unsur kemudahan dengan menambahkan fitur lain yang belum disediakan oleh Airbnb

Predicting Shear Capacity of RC Beams Strengthened with NSM FRP Using Neural Networks

This research aims to predict the shear capacity of NSM FRP beams using the neural network method. The study investigates the key considerations and the necessary analysis for this prediction. NSM FRP beams are reinforced concrete beams that are strengthened with near-surface mounted (NSM) fiber-reinforced polymer (FRP) composites. Accurately predicting their shear capacity is important for ensuring their safety and reliability in real-world applications. The neural network method is a machine learning approach that is increasingly used in engineering analysis and design. The study explores how this method can be used to predict the shear capacity of NSM FRP beams and what factors should be taken into account in this analysis. The research also discusses the analytical approach required for this prediction, highlighting the necessary steps for obtaining accurate results. Overall, this study provides valuable insights into the use of the neural network method for predicting the shear capacity of NSM FRP beams. The findings can help inform future research and practical applications in the field of structural engineering, contributing to the development of safer and more reliable structures

Association between functional polymorphisms of Foxp3 and Interleukin-21 genes with the occurrence of recurrent pregnancy loss in Gaza strip-Palestine

Background: This study was conducted in order to investigate the association between IL-21 (rs2055979 G/T and rs13143866 A/G) and Foxp3 (rs2232365 A/G and rs3761548 A/C) gene polymorphisms and recurrent pregnancy loss (RPL) in a group of Palestinian women residing in Gaza strip.Methods: A retrospective case-control study was carried out during the period (January to June, 2014). A total of 200 females, 100 RPL patients and 100 controls women without previous history of RPL, aged 20–35 years were included in the study. IL-21 rs13143866 A/G and Foxp3 rs2232365 A/G polymorphisms were analyzed by allele-specific PCR whereas, IL-21 rs2055979 G/T and Foxp3 rs3761548 A/C polymorphisms were investigated by PCR-RFLP.Results: No statistically significant difference existed between RPL cases and controls in terms of the allelic and genotypic distribution of IL-21 rs2055979 or rs13143866. On the other hand, the two Foxp3 gene polymorphisms showed statistically significant association with RPL: the rs2232365 A/G allele G and its homozygous genotype G/G and the rs3761548 A/C allele A and its A/A genotype were significantly higher in RPL group.Conclusions: Foxp3 rs2232365 A/G and rs3761548 A/C polymorphisms represent risk factors for RPL in Gaza strip women. IL-21 polymorphisms rs2055979 G/T and rs13143866 A/G however, do not pose tangible risk for RPL in our population. Study results should be confirmed on a larger sample.

The Energy of Regular Black Hole in General Relativity Coupled to Nonlinear Electrodynamics

According to the Einstein, Weinberg, and M{\o}ller energy-momentum complexes, we evaluate the energy distribution of the singularity-free solution of the Einstein field equations coupled to a suitable nonlinear electrodynamics suggested by Ay\'{o}n-Beato and Garc\'{i}a. The results show that the energy associated with the definitions of Einstein and Weinberg are the same, but M{\o}ller not. Using the power series expansion, we find out that the first two terms in the expression are the same as the energy distributions of the Reissner-Nordstr\"{o}m solution, and the third term could be used to survey the factualness between numerous solutions of the Einstein field eqautions coupled to a nonlinear electrodynamics.Comment: 11 page

The Relativistic Generalization of the Gravitational Force for Arbitrary Spacetimes

It has been suggested that re-expressing relativity in terms of forces could provide fresh insights. The formalism developed for this purpose only applied to static, or conformally static, space-times. Here we extend it to arbitrary space-times. It is hoped that this formalism may lead to a workable definition of mass and energy in relativity.Comment: 16 page

Teleparallel Energy-Momentum Distribution of Spatially Homogeneous Rotating Spacetimes

The energy-momentum distribution of spatially homogeneous rotating spacetimes in the context of teleparallel theory of gravity is investigated. For this purpose, we use the teleparallel version of Moller prescription. It is found that the components of energy-momentum density are finite and well-defined but are different from General Relativity. However, the energy-momentum density components become the same in both theories under certain assumptions. We also analyse these quantities for some special solutions of the spatially homogeneous rotating spacetimes.Comment: 12 pages, accepted for publication in Int. J. Theor. Phy

Matter collineations of Spacetime Homogeneous G\"odel-type Metrics

The spacetime homogeneous G\"odel-type spacetimes which have four classes of metrics are studied according to their matter collineations. The obtained results are compared with Killing vectors and Ricci collineations. It is found that these spacetimes have infinite number of matter collineations in degenerate case, i.e. det$(T_{ab}) = 0$, and do not admit proper matter collineations in non-degenerate case, i.e. det$(T_{ab}) \ne 0$. The degenerate case has the new constraints on the parameters $m$ and $w$ which characterize the causality features of the G\"odel-type spacetimes.Comment: 12 pages, LaTex, no figures, Class. Quantum.Grav.20 (2003) 216

A review of fouling mechanisms, control strategies and real-time fouling monitoring techniques in forward osmosis

© 2019 by the authors. Forward osmosis has gained tremendous attention in the field of desalination and wastewater treatment. However, membrane fouling is an inevitable issue. Membrane fouling leads to flux decline, can cause operational problems and can result in negative consequences that can damage the membrane. Hereby, we attempt to review the different types of fouling in forward osmosis, cleaning and control strategies for fouling mitigation, and the impact of membrane hydrophilicity, charge and morphology on fouling. The fundamentals of biofouling, organic, colloidal and inorganic fouling are discussed with a focus on recent studies. We also review some of the in-situ real-time online fouling monitoring technologies for real-time fouling monitoring that can be applicable to future research on forward osmosis fouling studies. A brief discussion on critical flux and the coupled effects of fouling and concentration polarization is also provided

A review of fouling mechanisms, control strategies and real-time fouling monitoring techniques in forward osmosis

Forward osmosis has gained tremendous attention in the field of desalination and wastewater treatment. However, membrane fouling is an inevitable issue. Membrane fouling leads to flux decline, can cause operational problems and can result in negative consequences that can damage the membrane. Hereby, we attempt to review the different types of fouling in forward osmosis, cleaning and control strategies for fouling mitigation, and the impact of membrane hydrophilicity, charge and morphology on fouling. The fundamentals of biofouling, organic, colloidal and inorganic fouling are discussed with a focus on recent studies. We also review some of the in-situ real-time online fouling monitoring technologies for real-time fouling monitoring that can be applicable to future research on forward osmosis fouling studies. A brief discussion on critical flux and the coupled effects of fouling and concentration polarization is also provided

Teleparallel Energy-Momentum Distribution of Static Axially Symmetric Spacetimes

This paper is devoted to discuss the energy-momentum for static axially symmetric spacetimes in the framework of teleparallel theory of gravity. For this purpose, we use the teleparallel versions of Einstein, Landau-Lifshitz, Bergmann and M$\ddot{o}$ller prescriptions. A comparison of the results shows that the energy density is different but the momentum turns out to be constant in each prescription. This is exactly similar to the results available in literature using the framework of General Relativity. It is mentioned here that M$\ddot{o}$ller energy-momentum distribution is independent of the coupling constant $\lambda$. Finally, we calculate energy-momentum distribution for the Curzon metric, a special case of the above mentioned spacetime.Comment: 14 pages, accepted for publication in Mod. Phys. Lett.