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Search Results: 1 - 10 of 699 matches for " Walid Gani "
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On the Use of the K-Chart for Phase II Monitoring of Simple Linear Profiles
Walid Gani,Mohamed Limam
Journal of Quality and Reliability Engineering , 2013, DOI: 10.1155/2013/705450
Abstract: Control charts for monitoring linear profiles are used to control quality processes which are characterized by a relationship between a response variable and one or more explanatory variables. In the literature, the majority of control charts deal with phase II analysis of linear profiles, where the objective is to assess the performance of control charts in detecting shifts in the parameters of linear profiles. Recently, the kernel distance-based multivariate control chart, also known as the K-chart, has received much attention as a promising nonparametric control chart with high sensitivity to small shifts in the process. Despite its numerous advantages, no work has proposed the use of the K-chart for monitoring simple linear profiles and that serves the motivation for this paper. This paper proposes the use of the K-chart for monitoring simple linear profiles. A benchmark example is used to show the construction methodology of the K-chart for simultaneously monitoring the slope and intercept of linear profile. In addition, performance of the K-chart in detecting out-of-control profiles is assessed and compared with traditional control charts. Results demonstrate that the K-chart performs better than the control chart, EWMA control chart, and R-chart under small shift in the slope. 1. Introduction In the last decade, control charts for monitoring linear profiles have acquired a prominent role in controlling quality processes characterized by a relationship between a response variable and one or more explanatory variables. A control chart for monitoring linear profiles consists of two phases. In phase I, the parameters of the regression line are estimated to determine the stability of the process. In phase II, the goal is to detect shifts in the process from the baseline estimated in phase I. In the literature, the majority of control charts deal with the phase II analysis of linear profiles. Kang and Albin [1] proposed a multivariate control chart for monitoring both the intercept and the slope, while Kim et al. [2] suggested the use of three univariate exponentially weighted moving average (EWMA3) control charts for simultaneously monitoring the intercept, slope and standard deviation. Zou et al. [3] proposed a multivariate EWMA scheme when the quality process is characterized by a general linear profile. Zhang et al. [4] developed a control chart based on EWMA and Likelihood ratio test. Zou and Qiu [5] developed the LASSO-based EWMA control chart, for monitoring multiple linear profiles. Li and Wang [6] established an EWMA scheme with variable
Price Transmission Analysis along the Food Chain in Kazakhstan  [PDF]
Yessengali Oskenbayev, Gani Turabayev
Modern Economy (ME) , 2014, DOI: 10.4236/me.2014.53019
Abstract:

Vertical price transmission between wheat and flour markets in Kazakhstan has been analyzed using monthly data during the period 2000-2010. We found evidence of global market price spikes and government policies as a response leading to the divergence of prices across regions ofKazakhstan, which is especially notable in the flour market. Strikingly, flour prices are significantly higher in some wheat producing regions.

Differentially-Keyed IR-UWB Signals for MA with Differential-Detection Receiver  [PDF]
Walid Mahmoud
Journal of Computer and Communications (JCC) , 2014, DOI: 10.4236/jcc.2014.28004
Abstract:

Noncoherent communication receivers (differential-detectors) have simple design, however, they always incur bit error rate (BER) performance loss up to 3dB compared to coherent receivers. In this paper, a differential-detector is proposed for impulse radio ultra wideband (IR-UWB) communication systems. The system employs bit-level differential phase shift keying (DPSK) combined with code division (CD) for IR-UWB signals to support multiple-access (MA). It is analyzed under additive white Gaussian noise (AWGN) corrupted by multiple-access interference (MAI) channel. Its BER performance is compared against a reference coherent receiver using Monte-Carlo simulation method. A closed form expression for its average probability of error is derived analytically. Simulation results and theoretical analysis confirm the applicability of the proposed differential-detector for IR-UWB communication systems.

Usage of Human Resource Information System and Its Application in Business: A Study on Banking Industry in Bangladesh  [PDF]
Faruk Bhuiyan, Mohammad Osman Gani
iBusiness (IB) , 2015, DOI: 10.4236/ib.2015.73013
Abstract: The study aimed at examining the perceived importance of human resource information system (HRIS) in business. A structured questionnaire was used to get an opinion from human resource end-users from the 55 scheduled banks consisted of 8427 branches. A total of 1200 responses were returned as the complete form. The study then extracted the perceived important reasons of using HRIS in business through principal component (PCA) analysis. In addition, one-way analysis of variance (ANOVA) was tested to examine the variance levels among the responses. The results of the existing study revealed that HRIS only automates the repetitive HR functions but also facilitates HR end-users in allocating workforces effectively, promoting suitable corporate culture, designing employees’ career plan and improving services to the employees. Further, it found no significant variances among HR end-users’ responses on the perceived importance of HRIS according to their demographic variables. Albeit many studies had been conducted on the importance of HRIS, there was hardly any study that had gone through factor analysis. However, this study provided broad evidence to enrich the existing literature in the respective field, with improved methodological and measurement issues including factor analysis over the previous studies, to unleash the importance of HRIS in business.
The Impact of Fiscal Policy to the Kosovo Economical Development
Gani Asllani
Acta Universitatis Danubius : Oeconomica , 2011,
Abstract: The aim of this study is defining and finding fiscal politics in the function of thedevelopment of our economy in this transition phase as well as identifying the fiscal measures tooverpass the existing difficulties within future development framework of the country. The papercontains very important data regarding the level of economic charges with taxes, comparison of fiscalcharge of some important economies of Europe and world with fiscal charges of our economy.General conclusion from this paper results on that the fiscal system constructed to our country and theleaded fiscal politics should be based on the market economy and to implement modern concepts oftaxation which have to be in the full compliance with the rules of European Union and best advancedinternational standards.
Review of the advisory role of the international court of justice
Gani? Senad
Medjunarodni Problemi , 2010, DOI: 10.2298/medjp1004629g
Abstract: This paper presents a brief review and analysis of advisory proceedings before the International Court of Justice as well as an explanation of the nature and importance of advisory opinions as specific decisions of the International Court of Justice. The intention was to make the public more familiar with the nature of these proceedings drawing attention of the professional public to some specific elements that characterize advisory procedures, which in a sense make them closer to the proceedings in resolving disputes between states. Although not binding by their nature as are decisions of the Court, advisory opinions have, however, some weight and importance that primarily stem from the importance and authority of the body that provides them. A non-binding effect of advisory opinions is just a starting point in explaining them. Actually, it is the fact that opinions have a great authority and this requires some further explanations.
Elementary methods for failure due to a sequence of Markovian events
J. Gani
International Journal of Stochastic Analysis , 1998, DOI: 10.1155/s1048953398000264
Abstract: This paper is concerned with elementary methods for evaluating the distribution of the time to system failure, following a particular sequence of events from a Markov chain. After discussing a simple example in which a specific sequence from a two-state Markov chain leads to failure, the method is generalized to a sequence from a (k>2)-state chain. The expectation and variance of the time T to failure can be obtained from the probability generating function (p.g.f.) of T. The method can be extended to the case of continuous time.
Socio-demographic determinants of teenage pregnancy in the Niger Delta of Nigeria  [PDF]
Ayuba Ibrahim Isa, Ibukun Olugbenga Owoeye Gani
Open Journal of Obstetrics and Gynecology (OJOG) , 2012, DOI: 10.4236/ojog.2012.23049
Abstract: Sub-Saharan Africa has the highest rates of maternal and neonatal mortality worldwide. Young maternal age at delivery has been proposed as risk factor for adverse pregnancy outcome, it occurs in all races, faiths, socioeconomic statuses, and regions. Teenage mothers are likely to be unmarried, poor and to sacrifice education. Isolation, unstable marriages, stress, and guilt are among many social and psychological problems. The aim of this study is to determine the socio-demographic factors associated with teenage pregnancy in our environment, in order to proffer measures that can help curtail this continuing socio-medical problem. The records of all teenage mothers (aged 13 - 19) who had delivery at the Niger Delta University Teaching Hospital, Bayelsa State, Nigeria, over a period of 4 Years (January 1 2007 to December 31 2010) were retrospectively reviewed. There were a total of 1341 deliveries during the study period, out which 83 were teenagers giving an incidence of 6.2%. The age of the patients ranged from 14% to 19 years with a mean age of (28.1 ± 5.7) years. Their parity ranged from zero to three, with a mean of 2.4 ± 1.9. About a third (20%/24.1%) were primigravidae, 33%/39.9% had at least secondary education and majority (48/57.8%) were unbooked, unmarried (60%/ 72.3%), unemployed (62%/74.7%) and of low social class. Majority 71 (85.5%) of the teenage mothers had never used any form of modern contraceptive method and 45 (54.2%) of them had terminated at least one pregnancy in the past. 26 (31.3%) had Caesarean sections, majority of which were emergencies 22 (84.6%). It was concluded that teenage mothers in the Niger Delta tend to have unfavorable socio-demographic and obstetric factors. Concrete measures must be put in place to address these.
Development of Optical Chemical Sensor Based on Pararosaniline in Sol-Gel Matrix for Detection of Formaldehyde in Food Samples  [PDF]
Agus Abdul Gani, Mochammad Yuwono, Bambang Kuswandi
American Journal of Analytical Chemistry (AJAC) , 2013, DOI: 10.4236/ajac.2013.411079
Abstract:

Optical chemical sensor based on immobilesed pararosaniline into sol-gel matrix tetraethyl orthosilicate (TEOS) is a simple tool that can be used to detect the presence of formalin (formaldehide) in food. Pararosaline in sol-gel matrix was developed when contacted with food sample that contains formalin. The optical signal was produced by changing color from purple to yellow, that can be used to detect quantitative formaldehide in sample

The Relationship of SmokingOpioidAntidepressant Use and History of Spine Surgery  [PDF]
Walid Mohammad, Zaytseva Nadezhda
International Journal of Clinical Medicine (IJCM) , 2010, DOI: 10.4236/ijcm.2010.11003
Abstract: Introduction: In a recent paper, smoking was shown to be an independent predictor of longterm continued opioid use in spine patients (Krebs et al. 2010). In this paper, we study the interaction of smoking with opioid and antidepressant use and the relationship with prior spine surgery and future spine surgery. Methods: Data on smoking, opioid and antidepressant use were retrospectively collected from 758 spine surgery inpatients [lumbar microdiskectomy (LMD), anterior cervical decompression and fusion (ACDF) and lumbar decompression and fusion (LDF)]. Interaction with history of previous spine surgery and return for additional spine surgery was studied. Followup ranged from one to four years. Results: Significant correlation was detected between smoking and opioid use and between opioid and antidepressant use. History of previous spine surgery correlated with antidepressant use and return for additional spine surgery. Additional spine surgery correlated with opioid use and history of previous spine surgery. Smoking LMD patients on both opioids and antidepressants and smoking ACDF patients on antidepressants who have a history of prior spine surgery were more likely to return for additional spine surgery. However, in the LDF group, smoking patients on antidepressants without previous spine surgery were more likely to come for another spine surgery. Conclusion: Smokingantidepressantopioid use could be predictive of return for additional spine surgery during the followup years especially if a history of prior spine surgery was reported. Further research is needed on the implications of such an association.
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