Simulasi Sistem Ds-cdma dengan Berbagai Kode Penebar

In DS-CDMA, a number of users are able to use the same frequency bandwidth in the same time. Each user's canal is differentiated by a unique code (spread code) used to spread the power of information signal into bandwidth wider the information signal bandwidth. But, the thing commonly happen is that there is correlation between spreader codes used, so users will interference each other. This is very much obtained by the orthogonal levels of spreader code used.In this final paper, a study on comparison of the system performance will be done by using different spreader code. Codes that are used in this study are PN-sequence, Walsh code, Zadoff-Chu code and Golay code. And then, the system performance will also compared when some variables are changed, e.g. on how the system performance correction (BER) when variety and length of code are changed.From the simulation of system performance in the canal condition of AWGN and Rayleigh, the target of BER in voice service of 10-3 is reached in the SNR range of 5-10 dB for Walsh and Golay; PN and Zadoff can not reach BER target. In the worst condition when the canal is in selective condition, Golay code still better than the other codes. System capacity is so much determined by length of spreader code. When the amount of active user approaches length of used spreader code, the system performance will be in saturation point

The Impact of the Balanced Scorecard (BSC) Non-Financial Perspectives on the Financial Performance of Private Universities

There are numerous attributed performance measures and investments to Balanced Scorecard (BSC) but empirical research and literature still lacks sufficient evidence of the effectiveness and improvement of organizational financial performance with respect to its multiple perspectives. BSC model perspectives are four in number, namely learning and growth, internal process, customers and financial perspective. In this paper, the impact of non-financial BSC perspectives on the financial performance of Private Universities (PUs) in Yemen is empirically examined. The study used Partial Least Square-Structural Equation Modeling (PLS-SEM) on data culled from 136 faculties, to determine the impact of three non-financial BSC perspectives on the financial performance of the institutions. The results showed that there were statistically significant positive correlations between Customer Perspective, Internal Process, and Learning and Growth, and Financial Performance. There was a positive correlation between an increase of 0.221 in Customer Perspective and a 2.341 rise in financial efficiency. In similar vein, a 3.827 improvement in Financial Performance was the consequence of a 0.346 improvement in Internal Process, while a 2.028 improvement in Financial Performance was the outcome of a 0.198 improvement in Learning and Growth

The Influence of Supply Chain Management Strategies on Organizational Performance in Hospitality Industry

The studys primary goal is to analyze the connection between SCM practices and organizational performance, and it also aims to evaluate the moderating role of management type. Quantitative data collected from Jordans hotel and restaurant workers via questionnaire. Structural equation modeling is used to examine the hypothesized relationships. Organizational Performance is positively impacted by effective information sharing. Information Quality (IQ) positively affects Organizational Performance (OP), and Strategic Supplier Partnerships (SSP) play a crucial role. Customer Relationship Management (CRM) had no discernible effect on OP, according to the study. OP is positively impacted by Postponement (POS) techniques. When implemented, postponement increases the efficiency of the supply chain and the happiness of guests. Type of Managements moderating effect is investigated. It moderates the effects of Strategic Supplier Partnerships (SSP), Information Quality (IQ), Customer link (CR), and Postponement (POS) on Organizational Performance (OP) but has no effect on the link between Information Sharing (IS) and Organizational Performance (OP). The success of Jordans hotel sector relies in part on how well its supply chain is managed. Insights from this research can help those working in the hotel industry improve supply chain operations and efficiency. Improving guest experiences and being competitive in Jordans fast-paced hospitality industry may be driven through bolstering cooperation, creating strategic partnerships, and investing in information quality

Challenges in improving the performance of eddy current testing: Review

Eddy current testing plays an important role in numerous industries, particularly in material coating, nuclear and oil and gas. However, the eddy current testing technique still needs to focus on the details of probe structure and its application. This paper presents an overview of eddy current testing technique and the probe structure design factors that affect the accuracy of crack detection. The first part focuses on the development of different types of eddy current testing probes and their advantages and disadvantages. A review of previous studies that examined testing samples, eddy current testing probe structures and a review of factors contributing to eddy current signals is also presented. The second part mainly comprised an in-depth discussion of the lift-off effect with particular consideration of ensuring that defects are correctly measured, and the eddy current testing probes are optimized. Finally, a comprehensive review of previous studies on the application of intelligent eddy current testing crack detection in non destructive eddy current testing is presented

LC-MS/MS Tandem Mass Spectrometry for Analysis of Phenolic Compounds and Pentacyclic Triterpenes in Antifungal Extracts of Terminalia brownii (Fresen)

Decoctions and macerations of the stem bark and wood of Terminalia brownii Fresen. are used in traditional medicine for fungal infections and as fungicides on field crops and in traditional granaries in Sudan. In addition, T. brownii water extracts are commonly used as sprays for protecting wooden houses and furniture. Therefore, using agar disc diffusion and macrodilution methods, eight extracts of various polarities from the stem wood and bark were screened for their growth-inhibitory effects against filamentous fungi commonly causing fruit, vegetable, grain and wood decay, as well as infections in the immunocompromised host. Ethyl acetate extracts of the stem wood and bark gave the best antifungal activities, with MIC values of 250 ug/mL against Nattrassia mangiferae and Fusarium verticillioides, and 500 ug/mL against Aspergillus niger and Aspergillus flavus. Aqueous extracts gave almost as potent effects as the ethyl acetate extracts against the Aspergillus and Fusarium strains, and were slightly more active than the ethyl acetate extracts against Nattrassia mangiferae. Thin layer chromatography, RP-HPLC-DAD and tandem mass spectrometry (LC-MS/MS), were employed to identify the chemical constituents in the ethyl acetate fractions of the stem bark and wood. The stem bark and wood were found to have a similar qualitative composition of polyphenols and triterpenoids, but differed quantitatively from each other. The stilbene derivatives, cis- (3) and trans- resveratrol-3-O-b-galloylglucoside (4), were identified for the first time in T. brownii. Moreover, methyl-(S)-flavogallonate (5), quercetin-7-b-O-di-glucoside (8), quercetin-7-O-galloyl-glucoside (10), naringenin-40-methoxy-7-pyranoside (7), 5,6-dihydroxy-30,40,7-tri-methoxy flavone (12), gallagic acid dilactone (terminalin) (6), a corilagin derivative (9) and two oleanane type triterpenoids (1) and (2) were characterized. The flavonoids, a corilagin derivative and terminalin, have not been identified before in T. brownii. We reported earlier on the occurrence of methyl-S-flavogallonate and its isomer in the roots of T. brownii, but this is the first report on their occurrence in the stem wood as well. Our results justify the traditional uses of macerations and decoctions of T. brownii stem wood and bark for crop and wood protection and demonstrate that standardized extracts could have uses for the eco-friendly control of plant pathogenic fungi in African agroforestry systems. Likewise, our results justify the traditional uses of these preparations for the treatment of skin infections caused by filamentous fungi.Peer reviewe

Hypolipidemic Effect of Caffeic Acid Isolated From Arctium Lappa Cultivated In Iraq, in Hyperlipidemic Rat Model

The goal of the extant revision was to explore the influence of  caffeic acid (CA) extracted from Arctium lappa L. on lipid profile and histology of aorta  in rats .  Analytical study demonstrated a high percentage of both chlorogenic and caffeic acid in the 80 % methanol extract of the aerial parts (leaves and stems) of Arctium lappa L. from the family Asteraceace.  Hypolipidemic activity of caffeic acid was studied against cholesterol induced hypercholesterolemia in Wistar albino rats for thirty days. Rats were separated into normal group (A), hypercholesterolemic positive controller group (B). While, the rest three groups (C, D and E) attended as hypercholesterolemic trial groups. Caffeic acid was given verbally at doses of 20 mg / kg body mass in Collection (C), 40 mg/kg in Collection(D) then 20 mg/ kg in collection (E) after two weeks of administration of cholesterol induced hypercholesterolemia. There was an obvious histological improvement of changes induced by hypercholesteremia in aorta. Furthermore, using (CA) at 20mg after 2 weeks of feeding on cholesterol rich diet led to a important decline (P<0.05) in serum whole cholesterol levels in compassion with the control and cholesterol rich diet group. Moreover, There was a great improvement in the histology results convinced by the high cholesterol gorgeous diet, which can partly be attributed to an antioxidant activity of (CA).                           Keywards: Arctium lappa, Caffeic acid , Hypolipidimic, Hypercholesterolemia

Conceivable security risks and authentication techniques for smart devices

With the rapidly escalating use of smart devices and fraudulent transaction of users’ data from their devices, efficient and reliable techniques for authentication of the smart devices have become an obligatory issue. This paper reviews the security risks for mobile devices and studies several authentication techniques available for smart devices. The results from field studies enable a comparative evaluation of user-preferred authentication mechanisms and their opinions about reliability, biometric authentication and visual authentication techniques