• 융합경영연구
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• 제2권4호
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• pp.1-19
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• 2014

The rule of Islam is simple: if you advance a loan, you are entitled to receive your capital only and nothing more. If you wish to secure profit you should enter into a partnership and become a shareholder. Prohibitions against interest are not peculiar to Islam. If we were to trace back through history, a number of examples of such prohibitions can be found in the early Greek, Roman and Rabinnical thought. With the decline of the influence of the Catholic Church interest transactions become legal and stimulated giant Western corporations which forged capitalist imperialism. The practice of charging interest (usury) now dominated Western law and ethics for over a millennium. But, the Western or capitalist economic system has proven a failure in its quest for economic justice, which serves to benefit all in society, both the rich and the poor. In particular, capitalism is currently causing a terrifying scenario of making the rich richer and the poor poorer due to interest charges. An alternative banking model, called Islamic finance and banking, is evoked in this study in order to depress financial exploitation by banking institutions.

• The Journal of Asian Finance, Economics and Business
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• 제8권4호
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• pp.329-337
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• 2021

This research aims to expose the Islamic perspective on the concept of justice on the Mudarabah contract's profit-sharing ratio. In certain verses in Al-Qur'an, Islamic values in Muamalah, the rules dictated by the Qur'an and its practices, and explanations rendered (more commonly known as Sunnah) by the Prophet Muhammad (pbuh) and Sahabah (the companions of the Prophet Muhammad), and Fiqh Axiom (rules) in Muamalah (Islamic jurisprudence), are used as the instruments of sharia to achieve the study objective. Islamic monetary establishments in Indonesia are still not in full consistency with the Shariah principles, significantly as far as satisfying equity and justice by Islamic banks in mudarabah contract (with clients). The ignominy is the nisbah (ratio) between the capital proprietor and the capital director. There are models or propositions to decide the benefit (profit)-sharing proportion. Nevertheless, none of them explains or specifies the possibility of equity/justice in the profit-sharing ratio. This research utilizes an explorative and subjective methodology that contributes to the philosophical premise of deciding the profit-sharing fairness. The elements of a just ratio for the Mudharabah contract are mutual willingness, the existence of negotiation, and the level of advantages and risks of the labor.

• Geomechanics and Engineering
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• 제7권3호
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• pp.233-246
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• 2014

Estimation of fracture initiation pressure is one of the most difficult technical challenges in hydraulic fracturing treatment of vertical or horizontal oil wells. In this study, the influence of in-situ stresses and pore pressure values on fracture initiation pressure and its profile in vertical and horizontal oil wells in a normal stress regime have been investigated. Cohesive elements with traction-separation law (XFEM-based cohesive law) are used for simulating the fracturing process in a fluid-solid coupling finite element model. The maximum nominal stress criterion is selected for initiation of damage in the cohesive elements. The stress intensity factors are verified for both XFEM-based cohesive law and analytical solution to show the validation of the cohesive law in fracture modeling where the compared results are in a very good agreement with less than 1% error. The results showed that, generally by increasing the difference between the maximum and minimum horizontal stress, the fracture pressure and its profile has been strongly changed in the vertical wells. Also, it's been clearly observed that in a horizontal well drilled in the direction of minimum horizontal stress, the values of fracture pressure have been significantly affected by the difference between overburden pressure and maximum horizontal stress. Additionally, increasing pore pressure from under-pressure regime to over-pressure state has made a considerable fall on fracture pressure in both vertical and horizontal oil wells.

• 동남아시아연구
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• 제19권2호
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• pp.57-91
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• 2009

The purpose of this paper is to examine historical development, ideology and praxis of Islamic radicalism in Indonesia. In the second part of this paper, radical trends under Sukarno and Suharto governments will be dealt with, focusing on three streams of Darul Islam, Dewan Dakwah Islamiyah Indonesia and Islamic secret sects. The third part investigates the surge of radical Islamic movements after the fall of Suharto regime. For this, three organizations are again selected for detailed analysis. This paper argues that, judging from active engagements of radical organizations in national and international affairs and favorable attitude of general Muslims toward them, radicalism has recently established itself as one of the major constituents of Indonesian Islam. To put it differently, the current situation signifies that under the Suharto regime, a diversification of so-called the santri has been underway. Contrary to the traditional santri group which emphasizes the fulfillment of faith in the private sphere, another group has been crystallized, which gives priority to Islamic roles in public sphere and attempts to realize these. It is difficult to pinpoint the reasons why this group has emerged. Its effect, however, can relatively easily be grasped. With the surge of this new radical stream, the rhetoric of an establishment of Islamic state and a realization of Islamic law has no longer been tabooed and has been instated as the key element in public discourse of Islam.

• Computers and Concrete
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• 제33권1호
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• pp.1-11
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• 2024

Aggressive environmental conditions, and especially the acidic effects of sulfate ion penetration, have reduced the lifetime of concrete structures in some areas, especially coastal and marine areas. In this research, at first, samples made of type II and V cement were kept in a solution of magnesium sulfate (MgSO₄) for a period of 90 and 180 days, the change of appearance. Field Emission Scanning Electron Microscopy (FE-SEM) and X-Ray Diffraction (XRD), were used to analyze the microstructure and the complex mineral composition of the concrete after exposure to corrosive environments. Then solving the differential equation governing the sulfate ion penetration, which is based on the second Fick law, it has been tried to determine the concentration of sulfate ions inside the concrete. In the following, an attempt has been made to improve the prediction of sulfate ion concentration in concrete by using Crank's penetration equation. At the same time, the coefficient in the Crank's solution have been optimized by using the Particle Swarm Optimization (PSO algorithm). The comparison between the results shows that the values obtained from Crank's relation are closer to the experimental results than the equation obtained from Fick's second law and shows a more accurate prediction.

• Steel and Composite Structures
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• 제29권3호
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• pp.349-362
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• 2018

Thermal buckling behavior of porous functionally graded nanobeam integrated with piezoelectric sensor and actuator based on the nonlocal higher-order shear deformation beam theory is investigated for the first time. Its material properties are assumed to be temperature-dependent and varying along the thickness direction according to the modified power-law rule. Note that the porosity with even type is considered herein. The equations of motion are obtained through Hamilton's principle. The influences of several parameters (such as type of temperature distribution, external electric voltage, material composition, porosity, small-scale effect, Ker foundation parameters, and beam thickness) on the thermal buckling of FG nanobeam are investigated in detail.

• 대한수학회보
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• 제52권6호
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• pp.1819-1826
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• 2015

Following an idea of Ornstein and Sucheston, Foguel proved the so-called uniform "zero-two" law: let T : $L^1$(X, $\mathcal{F}$, ${\mu}$) ${\rightarrow}$ $L^1$(X, $\mathcal{F}$, ${\mu}$) be a positive contraction. If for some $m{\in}{\mathbb{N}}{\cup}\{0\}$ one has ${\parallel}T^{m+1}-T^m{\parallel}$ < 2, then $\lim_{n{\rightarrow}{\infty}}{\parallel}T^{m+1}-T^m{\parallel}=0$. There are many papers devoted to generalizations of this law. In the present paper we provide a multi-parametric generalization of the uniform zero-two law for $L^1$-contractions.

• Structural Engineering and Mechanics
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• 제73권3호
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• pp.225-238
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• 2020

This work treats the axisymmetric buckling of functionally graded (FG) porous annular/circular nanoplates based on modified couple stress theory (MCST). The nanoplate is located at the elastic medium which is simulated by Kerr foundation with two spring and one shear layer. The material properties of the porous FG nanostructure are assumed to vary through the nanoplate thickness based on power-law rule. Based on two variables refined plate theory, the governing equations are derived by utilizing Hamilton's principle. Applying generalized differential quadrature method (GDQM), the buckling load of the annular/circular nanoplates is obtained for different boundary conditions. The influences of different involved parameters such as boundary conditions, Kerr medium, material length scale parameter, geometrical parameters of the nanoplate, FG power index and porosity are demonstrated on the nonlinear buckling load of the annular/circular nanoplates. The results indicate that with increasing the porosity of the nanoplate, the nonlinear buckling load is decreased. In addition, with increasing the material length scale parameter to thickness ratio, the effect of spring constant of Kerr foundation on the buckling load becomes more prominent. The present results are compared with those available in the literature to validate the accuracy and reliability. A good agreement is observed between the two sets of the results.

• Steel and Composite Structures
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• 제33권2호
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• pp.307-318
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• 2019

This is the first attempt to consider the nonlinear bending analysis of porous functionally graded (FG) thick annular and circular nanoplates resting on Kerr foundation. The size effects are captured based on modified couple stress theory (MCST). The material properties of the porous FG nanostructure are assumed to vary smoothly through the thickness according to a power law distribution of the volume fraction of the constituent materials. The elastic medium is modeled by Kerr elastic foundation which consists of two spring layers and one shear layer. The governing equations are extracted based on Hamilton's principle and two variables refined plate theory. Utilizing generalized differential quadrature method (GDQM), the nonlinear static behavior of the nanostructure is obtained under different boundary conditions. The effects of various parameters such as material length scale parameter, boundary conditions, and geometrical parameters of the nanoplate, elastic medium constants, porosity and FG index are shown on the nonlinear deflection of the annular and circular nanoplates. The results indicate that with increasing the material length scale parameter, the nonlinear deflection is decreased. In addition, the dimensionless nonlinear deflection of the porous annular nanoplate is diminished with the increase of porosity parameter. It is hoped that the present work may provide a benchmark in the study of nonlinear static behavior of porous nanoplates.

• The Journal of Asian Finance, Economics and Business
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• 제8권3호
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• pp.331-339
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• 2021

The youths are characterized by their reckless and ambitious behavior. They exhibit a strong tendency to make risky decisions that may jeopardize their future. These qualities are also in line with their experience-seeking behavior. As young entrepreneurs aim high in profit-seeking activities, their ethical stance may be compromised. Moreover, their money profile increases at an accelerated pace, leading them to love money even more. Quantitatively, this study was the first to investigate the behavior of young entrepreneurs in terms of their love of money, religiosity, and ethical perceptions by adopting the hadith perspective in Islamic tradition by developing the scales of all constructs. The respondents were 261 members of the Indonesian Young Entrepreneur Association in Sulawesi Selatan, Indonesia. This study also examined gender as the moderating variable. This study found that the love of money affects ethical perception negatively; on the other hand, religiosity positively affected ethics. Gender is found to moderate religiosity, but not love of money. These results signify the harmful impact of loving money too much on young entrepreneurs' ethics; furthermore, the scales developed from hadith revelation were able to capture the empirical findings significantly.