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2021 ◽  
Vol 12 ◽  
Author(s):  
Lina Bentahila ◽  
Roger Fontaine ◽  
Valérie Pennequin

Many theories have shaped the concept of morality and its development by anchoring it in the realm of the social systems and values of each culture. This review discusses the current formulation of moral theories that attempt to explain cultural factors affecting moral judgment and reasoning. It aims to survey key criticisms that emerged in the past decades. In both cases, we highlight examples of cultural differences in morality, to show that there are cultural patterns of moral cognition in Westerners’ individualistic culture and Easterners’ collectivist culture. It suggests a paradigmatic change in this field by proposing pluralist “moralities” thought to be universal and rooted in the human evolutionary past. Notwithstanding, cultures vary substantially in their promotion and transmission of a multitude of moral reasonings and judgments. Depending on history, religious beliefs, social ecology, and institutional regulations (e.g., kinship structure and economic markets), each society develops a moral system emphasizing several moral orientations. This variability raises questions for normative theories of morality from a cross-cultural perspective. Consequently, we shed light on future descriptive work on morality to identify the cultural characteristics likely to impact the expression or development of reasoning, justification, argumentation, and moral judgment in Westerners’ individualistic culture and Easterners’ collectivist culture.


2021 ◽  
Vol 24 (3) ◽  
pp. 12-24
Author(s):  
Mississippi Valenzuela

As gravitation and electromagnetism are closely analogous long-range interactions, and the current formulation of gravitation is given in terms of geometry. Thence emerges a relativistic theory of the field by generalization of the general relativity. The derivation presented shows how naturally we can extend general relativity theory to a non-symmetric field, and that the field-equations are really the generalizations of the gravitational equations. With curvature tensor and the variational principle, we will deduce the field equations and Bianchi's identities. In consecuense, the field equations will find from Bianchi's identities.


Gels ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 229
Author(s):  
I-En Wu ◽  
Madonna Rica Anggelia ◽  
Sih-Yu Lin ◽  
Chiao-Yun Chen ◽  
I-Ming Chu ◽  
...  

Tacrolimus (FK506) is a common immunosuppressive drug that is capable of suppressing acute rejection reactions, and is used to treat patients after allotransplantation. A stable and suitable serum concentration of tacrolimus is desirable for better therapeutic effects. However, daily drug administration via oral or injection routes is quite inconvenient and may encounter drug overdose or low patient compliance problems. In this research, our objective was to develop an extended delivery system using a thermosensitive hydrogel of poly ethylene glycol, D,L-lactide (L), and ϵ-caprolactone (CL) block copolymer, mPEG-PLCL, as a drug depot. The formulation of mPEG-PLCL and 0.5% PVP-dissolved tacrolimus was studied and the optimal formulation was obtained. The in vivo data showed that in situ gelling is achieved, a stable and sustained release of the drug within 30 days can be maintained, and the hydrogel was majorly degraded in that period. Moreover, improved allograft survival was achieved. Together, these data imply the potential of the current formulation for immunosuppressive treatments.


2021 ◽  
Vol 2090 (1) ◽  
pp. 012137
Author(s):  
F Lucchini ◽  
N Marconato

Abstract In this paper, a comparison between two current-based Integral Equations approaches for eddy current problems is presented. In particular, the very well-known and widely adopted loop-current formulation (or electric vector potential formulation) is compared to the less common J-φ formulation. Pros and cons of the two formulations with respect to the problem size are discussed, as well as the adoption of low-rank approximation techniques. Although rarely considered in the literature, it is shown that the J-φ formulation may offer some useful advantages when large problems are considered. Indeed, for large-scale problems, while the computational efforts required by the two formulations are comparable, the J-φ formulation does not require any particular attention when non-simply connected domains are considered.


2021 ◽  
Vol 2021 (10) ◽  
Author(s):  
Luca Buoninfante ◽  
Francesco Di Filippo ◽  
Shinji Mukohyama

Abstract The information loss paradox is usually stated as an incompatibility between general relativity and quantum mechanics. However, the assumptions leading to the problem are often overlooked and, in fact, a careful inspection of the main hypothesises suggests a radical reformulation of the problem. Indeed, we present a thought experiment involving a black hole that emits radiation and, independently of the nature of the radiation, we show the existence of an incompatibility between (i) the validity of the laws of general relativity to describe infalling matter far from the Planckian regime, and (ii) the so-called central dogma which states that as seen from an outside observer a black hole behaves like a quantum system whose number of degrees of freedom is proportional to the horizon area. We critically revise the standard arguments in support of the central dogma, and argue that they cannot hold true unless some new physics is invoked even before reaching Planck scales. This suggests that the information loss problem, in its current formulation, is not necessarily related to any loss of information or lack of unitarity. Therefore, in principle, semiclassical general relativity and quantum mechanics can be perfectly compatible before reaching the final stage of the black hole evaporation where, instead, a consistent theory of quantum gravity is needed to make any prediction.


2021 ◽  
Author(s):  
Marco Pau ◽  
Ferdinanda Ponci ◽  
Antonello Monti ◽  
Paolo Attilio Pegoraro ◽  
Sara Sulis ◽  
...  

2021 ◽  
Vol 24 (2) ◽  
pp. 72-79
Author(s):  
Mississippi Valenzuela

As gravitation and electromagnetism are closely analogous long-range interactions, and the current formulation of gravitation is given in terms of geometry, we expect the latter also to appear through the geometry. This unification has however, remained an unfulfilled goal. Thence emerges a relativistic theory of the asymmetric field by generalization of the general relativity. It will demonstrate in a new way that the field-equations chosen for the non-symmetric fields are really the natural ones.


Obiter ◽  
2021 ◽  
Vol 34 (2) ◽  
Author(s):  
Shannon Hoctor

The statutory criminal prohibition on the use of disguises in suspicious circumstances has a venerable history in South African law. A form of this offence can be found in the pre-Union legislation (as well as in s 9(2) of Proclamation 27 of 1920 and s 3(2) of Proclamation 5 of 1937 of the former South West Africa). It is noteworthy that there are very few reported cases dealing with the various forms of this offence. Nevertheless it is evident that the offence serves an important function. In its review of various statutes relating to justice, the South African Law Reform Commission comments, in respect of the current formulation of this offence found in section 1 of the Prohibition of Disguises Act (16 of 1969), that “it enables police officers to approach persons in suspicious circumstances, which could prevent crime occurring, for example, masked persons outside a bank”, and consequently it is recommended by the SALRC that the offence should therefore be retained.


Author(s):  
Hudong Chen

A theoretical formulation of lattice Boltzmann models on a general curvilinear coordinate system is presented. It is based on a volumetric representation so that mass and momentum are exactly conserved as in the conventional lattice Boltzmann on a Cartesian lattice. In contrast to some previously existing approaches for arbitrary meshes involving interpolation approximations among multiple neighboring cells, the current formulation preserves the fundamental one-to-one advection feature of a standard lattice Boltzmann method on a uniform Cartesian lattice. The new approach is built on the concept that a particle is moving along a curved path. A discrete space-time inertial force is derived so that the momentum conservation is exactly ensured for the underlying Euclidean space. We theoretically show that the new scheme recovers the Navier-Stokes equation in general curvilinear coordinates in the hydrodynamic limit, along with the correct mass continuity equation.


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