introduction sectoral retinitis pigmentosa (rp) is a rare clinical condition. case presentation we present a 60-year-old female with a history of mild night blindness and decreased vision in the left eye for about 15 years. conclusions fundus examination revealed retinal pigmentary changes in the inferotemporal sector and reduced arterial caliber. in addition, fundus autofluorescence, fluoresce...

In this paper, we will consider Hyers–Ulam–Rassias stability of multipliers and ring derivations between Banach algebras. As a corollary, we will prove superstability of ring derivations and multipliers. That is, approximate multipliers and approximate ring derivations are exact multipliers and ring derivations.

The question whether technological progress displaces employment or whether technological advance is beneficial for the level of employment has been in the core of economic dispute for over two centuries. The beneficial might be achieved by several compensation mechanisms within the economic system. In this paper we categorize these compensation mechanisms into two basic categories that reflect...

Recently a new blind equalization method was proposed for the 16QAM constellation input inspired by the maximum entropy density approximation technique with improved equalization performance compared to the maximum entropy approach, Godard's algorithm, and others. In addition, an approximated expression for the minimum mean square error (MSE) was obtained. The idea was to find those Lagrange mu...

‎In this paper, using the idea of convexificators, we study boundedness and nonemptiness of Lagrange multipliers satisfying the first order necessary conditions. We consider a class of nons- mooth fractional programming problems with equality, inequality constraints and an arbitrary set constraint. Within this context, define generalized Mangasarian-Fromovitz constraint qualification and sh...

The article focuses on varying protest intensities of social movement activists in an authoritarian political environment. Drawing on a sample of participants in El Salvador’s El movimiento popular, the paper examines how structural location in the resistance movement’s multi-sectoral organizational infrastructure shapes the level of participation. Those motivated by state repression and mainta...

Does unbalanced sectoral productivity growth inevitably lead to continuous shift of resources to the less productive sectors and stagnation in aggregate productivity? This paper attempts to integrate the traditional stagnationist and the modern optimist arguments within a numerical simulation framework. The simulation framework consists of an applied general equilibrium multi-sectoral growth mo...

This paper quantifies the contributions of sectoral productivity growth and structural change to aggregate productivity convergence. Existing evidence is inconclusive because it focuses on convergence within sector and its methodology depends sensitively on the conversion factor used to compare sectoral productivity levels across countries. Thus, a methodology – β-decomposition – is proposed to...

This work presents novel multipliers for Montgomery multiplication defined on binary fields GF(2). Different to state of the art Montgomery multipliers, this work uses a Linear Feedback Shift Register (LFSR) as the main building block. We studied different architectures for bit-serial and digit-serial Montgomery multipliers using the LFSR and the Montgomery factors x and xm−1. The proposed mult...

Reducing the power dissipation of parallel multipliers is important in the design of digital signal processing systems. In many of these systems, the products of parallel multipliers are rounded to avoid growth in word size. The power dissipation and area of rounded parallel multipliers can be signi cantly reduced by a technique known as truncated multiplication. With this technique, the least ...