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Search Results: 1 - 10 of 184 matches for " ROMI ISKANDAR "
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Abstract: The research theme is the concept of business according to Islamic economics. This study aims to describe how to financing of Islamic Bank contract performance 2008 -2013 period. This research base on published data of Bank Indonesia and Financial Service Autority . The method used in this research is ratio analysis tehcnic and Coomonsize analysis technic of the quantitative approach. The result shows that: signifcant contribution of murabaha and musyaraka contract financing in Islamic Bank balance statements, significant and smoth of growth level with murabaha and musyaraka contract. The impact of this research, Islamic Bank must be focus to use of murabaha and musyaraka contract financing and salam contract,istishna contract, ijarah contract unimplemented or maybe deleted. Because its unsignificant countribution and more fluktuatif performance of growth.
Makara Seri Teknologi , 2007,
Abstract: We propose an analysis of reverse link CDMA multispot beam stratospheric platforms (SPF) in this paper. The SPF is currently proposed as a novel wireless technology for the development of the next generation fixed and mobile communications. The geometry of this technology is different from that of the terrestrial but rather similar to the satellite based cellular system. However, evaluation on the CDMA system capacity of this technology has not been much reported. This paper addresses all possible multiple access interference analyses including the effects of channel fading and shadowing in order to evaluate the system capacity. Single SPF and multiple SPF model are evaluated under perfect power control and imperfect power control. The results indicate that in SPF systems the reverse link CDMA capacity is significantly reduced because of the power control imperfections. Moreover, in multiple SPF model the interference caused by the users in overlapped region is not trivial. We found that because of this problem the capacity is reduced for both speech and real-time data applications compared with the single SPF model even though the assumption of perfect power control can be made. In order to improve the system capacity we proposed two methods, first is to increase the minimum elevation angle definition for each platform and the second is to employ an adaptive antenna.
Information Reach and Range Impact on Interorganizational Systems Platforms  [PDF]
Ismail M. Romi
Intelligent Information Management (IIM) , 2014, DOI: 10.4236/iim.2014.61001

Organizations tend to use information systems (IS) applications that require data to be exchanged between different parties, while data exchange is restricted with information reach and range, which determines the organizations’ IT platform. To determine the best platform, a comparison between electronic data interchange (EDI) and web services was conducted depending on certain criteria, and then we match the results with the information reach and range. The main findings show that the web services platform can take place when the range of information access is required by anyone and anywhere regardless of IT base. EDI can take place when the range of information access doesn’t exceed the organizations’ boundaries. But when the range of information access exceeds the organizations’ boundaries, still between certain partners, web services or EDI can take place, and thus the organization can select them from those platforms depending on other criteria such as security, and cost.

Checks and Balances on Executive Compensation  [PDF]
Mai Iskandar-Datta
Open Journal of Business and Management (OJBM) , 2014, DOI: 10.4236/ojbm.2014.21003
Abstract: Checks and Balances on Executive Compensation
A 2.3/3.3 GHz Dual Band Antenna Design for WiMax Applications
Adit Kurniawan,Iskandar,Iskandar
ITB Journal of Information and Communication Technology , 2010, DOI: 10.5614/itbj.ict.2010.4.2.1
Abstract: A triangular-slot antenna with rectangular patch for 2.3/3.3 GHz WiMax applications has been implemented on DICLAD 527 substrate (relative permittivity εr = 2.5) with 1.524 mm of substrate thickness. A rectangular patch printed on one side of the substrate is fed by a 50 microstrip line and acts as the frequency tuning stub, while the triangular slot is positioned on the opposite side of the substrate, center lined to the rectangular stub. From the measurement results based on VSWR = 2 or equal to the return loss of 9.53 dB, at the lower band of 2.3 GHz the resulting impedance bandwidth is 290 MHz (from 2.16 to 2.45 GHZ) and at the upper band of 3.3 GHz is 370 MHz (from 3.31 to 3.68GHz), providing services for 2.3 GHz and 3.3 GHz frequency bands allocated for WiMax applications. The antenna gain measurement at 2.3 GHz frequency band is almost agrees with the simulation result of 3.2 dBi. While at 3.3 GHz the gain is approximately 4.4 dBi and continues to decrease with increasing frequency. The antenna gain measurement achieves maximum of 4.8 dBi (6 dBi from simulation) at about 3 GHz. The simulation and measurement results are evaluated and discussed.
Thymoma in Myasthenia Gravis: From Diagnosis to Treatment
Fredrik Romi
Autoimmune Diseases , 2011, DOI: 10.4061/2011/474512
Abstract: One half of cortical thymoma patients develop myasthenia gravis (MG), while 15% of MG patients have thymomas. MG is a neuromuscular junction disease caused in 85% of the cases by acetylcholine receptor (AChR) antibodies. Titin and ryanodine receptor (RyR) antibodies are found in 95% of thymoma MG and 50% of late-onset MG (MG onset ≥50 years), are associated with severe disease, and may predict thymoma MG outcome. Nonlimb symptom profile at MG onset with bulbar, ocular, neck, and respiratory symptoms should raise the suspicion about the presence of thymoma in MG. The presence of titin and RyR antibodies in an MG patient younger than 60 years strongly suggests a thymoma, while their absence at any age strongly excludes thymoma. Thymoma should be removed surgically. Prethymectomy plasmapheresis/iv-IgG should be considered before thymectomy. The pharmacological treatment does not differ from nonthymoma MG, except for tacrolimus which is an option in difficult thymoma and nonthymoma MG cases with RyR antibodies. 1. Thymoma in Myasthenia Gravis Thymomas in myasthenia gravis (MG) are neoplasms derived from thymic epithelial cells, and are usually of the cortical subtype (WHO type B) [1]. 50% of thymoma patients develop MG (hereafter referred to as thymoma MG in this paper) [2, 3]. Cortical thymomas usually have some morphological similarities with thymic cortex; they share the capacity to propagate the maturation of immature naive CD4 T cells and export mature naive T cells into the periphery. Thymomas lacking this ability do not induce MG [4]. Thymomas with histological similarities to medullary thymic tissue or thymomas lacking developing T cells are seldom associated with MG [4]. Other thymoma characteristics that can cause reduced self-tolerance include defective epithelial expression of the autoimmune regulator (AIRE) gene and/or of major histocompatibility complex class II molecules, absence of myoid cells, failure to generate FOXP3(+) regulatory T cells, and genetic polymorphisms affecting T-cell signalling [5]. Histologically, thymomas are epithelial neoplastic cells surrounded by maturing T cells. The epithelial cells are capable of expressing epitopes cross-reactive with skeletal muscle proteins, such as acetylcholine receptor (AChR), titin, and ryanodine receptor (RyR) [6, 7]. The muscle-like epitopes are presented to T cells together with costimulatory molecules [7]. Autoreactive T cells specific for AChR and titin are found both in thymomas and in thymoma MG patients’ sera [8]. Thymoma epithelial cells present AChR peptides to T-cell lines in
Arthropod borne diseases in Italy: from a neglected matter to an emerging health problem
Annali dell'Istituto Superiore di Sanità , 2010, DOI: 10.4415/ANN_10_04_12
Abstract: in medical entomology, "arthropod borne diseases", or "vector borne diseases" (vbd) are intended as a group of human and animal infections caused by different pathogen organisms (protozoa, helminthes, bacteria and viruses) transmitted by the bite of a bloodsucking insect or arachnid. it is commonly known that the infectious diseases transmitted by arthropods are mainly affecting tropical and subtropical countries, nevertheless some of them were or are still common also in the northern hemisphere, where they are usually maintained under control. vbd still represent some of the most important public health problems in the endemic areas but are becoming source of concern for developed countries too. since the last decades of the past century, a number of vbd has been spreading geographically, being recorded for the first time in areas outside their original range. this phenomenon is strictly related to the peculiar epidemiological characteristics of these diseases, that are considered the most susceptible to climatic, environmental and socioeconomic changes. this article is a short overview of the vbd endemic and emerging in italy. the possibility that some exotic vectors and/or pathogens could be introduced and become established in italy is also discussed.
On an extremal problem in two Siegel domains
Romi Shamoyan
Mathematics , 2012,
Abstract: We provide sharp new estimates for distance function in a Siegel domain of first and of second type
Otto Iskandar
Makara Seri Sosial Humaniora , 2002,
Abstract: The objective of the study is to analyze rela tionships between work ethos, achieve-ment of motivation and attitude of innovation and productivity of the farmer individually as well as simultaneusly. The study was carried out at Kuningan West Java (1999) with 60 respon dents selected randomly. The study reveald that there is positive correlation between : (1)Work ethos and pro duc tivity of the farmers (2) achievement of motivation and pro ductivity of the farmers (3) attitude of innovative and productivity of the farmers. Together, there is positive relationship between work ethos, achievement of motivation and attitude of innovative with productivity of the farmers. The research implies that work ethos, achievement of motivation and attitude of innovative useful to predict the productivity of the farm
Variability Of Satellite-Observed Sea Surface Height In The Tropical Indian Ocean: Comparison Of Eof And Som Analysis
Iskhaq Iskandar
Makara Seri Sains , 2009,
Abstract: Weekly sea surface height (SSH) in the tropical Indian Ocean (20°S - 20°N) was analyzed for the period of January 1993 - December 2007 using an empirical orthogonal function (EOF) and a self-organizing maps (SOM) analysis. The EOF analysis identifies four patterns and three of them are contained in the SOM patterns. The SOM, on the other hand, characterizes the sea level variability, which shows twenty-five patterns. The patterns with low (high) sea surface height anomaly (SSHA) in the southern (northern) hemisphere associated with the monsoonal winds dominate the variation in both two methods. The SOM is also able to separate typical patterns associated with the ENSO and or the Indian Ocean Dipole (IOD) events. Low SSHA occupied the western half of the basin while high SSHA loaded in the eastern basin when the La Ni a event is taking place. The El Ni o event is characterized by low SSHA in the northern hemisphere, along the equator and along the eastern boundary, while high SSHA in the southwestern part of the basin. The IOD event shows a dipole like pattern with low SSHA in the east and high SSHA in the west. When the IOD co-occurred with El Ni o, a distinct dipole pattern is clearly observed.
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