Tdeveloping A Two-Phase Post-Stratified Inverse Sampling To Reduce The Nonresponse Bias. Case Study: Students’ Satisfaction Survey In Qatar University

This research aims to develop a Two-phase Post-stratified Inverse Sampling (TPIS) to avoid or reduce the bias of nonresponse for students’ satisfaction survey of Qatar university. In the first phase, the students are partitioned into two groups of response and non-response. The second phase method of data collection is an intensified method to get information from nonresponse. An unbiased estimator of the mean of overall satisfaction and its variance estimator are developed. The efficiency of the estimator is assessed using a simulation study. Moreover, the efficiency of (TPIS) is assessed. The cased study results showed that the mean estimate of overall satisfaction was higher for the nonresponse groups than the response groups but the different was not statistically significant at level of =0.05 but significant at level of =0.10. However, the overall satisfactions were significantly different at =0.05 for 13 majors out of 51 (25%). This results indicate that the non-response bias is exists. In addition, simulation study results show that the TPIS is more efficient than a SRS with equal effective sample size for TPIS. Based on the results some recommendation and suggestion are provided

Impact Of E-Learning-Based Cooperative Learning Activities On Achievement And Communication Skills As Perceived By Undergraduate Students In Qatar University

Penyelidikan ini bertujuan untuk menyelidik kesan E-pembelajaran berbantu pembelajaran koperatif terhadap pencapaian pelajar dalam kursus ARAB 100. This research aims to investigate the impact of e-learning-based cooperative learning on students’ achievement in the Arabic Language Course (ARAB100) and their perceptions of communication skills

Prospects of Islamic micro finance: a study in India

India being a developing economy is one of the emerging markets in the world. But an obstacle that still stands in its way of development is the scarcity of financial/monetary resources required for sustainable investments. The giants of Microfinance in India are known to be charging high rates and the smaller players follow in their footsteps. For such regions, Interest-free microfinance is what is needed to uplift the minority and take them out of the fangs of poverty. Interest-free microfinance and its implementation can prove to be very useful in eradicating poverty and providing sustainable development of micro-enterprises and the expansion of financial inclusion. Thus, the aim of this study is to examine the prospects of Islamic microfinance in India. The quantitative method is employed, and primary data is collected through a questionnaire. The probability sampling method is used. Out of 500 questionnaires disbursed, 303 are received. The result of the questionnaire shows that majority of the public believes Islamic Microfinance Institions (IMFIs) will aid the poor financially, poverty will be alleviated, it will be beneficial to the society, and will help micro SMEs become more developed. Similarly, majority of the respondents also agreed to IMFIs being ethical, meant for all religions, catering to the needs of the society and help to extend loans without collaterals. This reflects that Islamic Microfinance holds great potential and prospects and will be widely accepted by the public and also the Indian market. Policymakers should consider IMFIs, establish guidelines and promulgate them as this can pave way to a financially more stable India. The limitation of the study is that the outreach was among people with access to the internet. Therefore, perception of those in rural areas, people with no internet and education could not be included. Hence, future research will fulfill this lacun

Toward Efficient Low Cost Highly Accurate Emotion Speech Synthesizer,

Abstract: A Text to Speech (TTS) system with the ability to express emotions is an interesting technology that is still under development. There have been multiple proposals to simulate emotion so far, and there are multiple dimensions for assessment. No system guarantees high score in all of these dimensions, this means that no system works in a direction to get low computation load, small database along with high accuracy and excellent voice quality. After all of these qualities are relative and fuzzy and there is no rigid grading system. In this paper we will propose a new path for research that will work toward improving all of the quality factors together, so that future work can come up with a more optimum solution for the emotional TTS systems

Synthesis of novel cyanoacetamides derivatives and their urease inhibition studies

The present study reports a convenient approach for the synthesis of cyanoacetamide based derivatives (7-27) via two-step process involving Knoevenagel reaction, followed by three component reaction to avail desired compounds. All the synthesized compounds were obtained in good to excellent yield and extensively characterized employing 1H NMR, 13C NMR, mass spectrometry and physical parameters. Further, these compounds were screened for urease inhibition. All of the synthesized compounds exhibited good to excellent urease activity notably compound 15 and 19 showed excellent urease inhibition activity with IC50 value ~17.34 μg/mL and 36.75 μg/mL in comparison to thiourea (used as standard) having IC50 value ~27.5 μg/mL

A Generalized Class of Circular Designs Strongly Balanced for Neighbor Effects

Minimal strongly balanced neighbor designs are useful (i) to minimize the bias due to neighbor effects economically, and (ii) to estimate the direct effect and neighbor effects independently. Such designs can easily be obtained for v odd and are available in literature. In this article, A generalized class of minimal circular designs strongly balanced for neighbor effects in blocks of equal and two different sizes have been constructed in which only v/2 unordered pairs of treatments do not appear as neighbors, where v is the number of treatments

Some New Constructors of Circular Strongly Generalized Neighbor Designs

Minimal strongly balanced neighbor designs are well known designs to balance the neighbor effects at low cost as well as to estimate the direct effects and neighbor effects independently for v odd, where v is number of treatments to be compared. Minimal strongly generalized neighbor designs are used to minimize the bias due to neighbor effects for v even. In this article, constructors are developed to construct two useful classes of minimal circular strongly generalized neighbor designs

Effect of Time-Lapse Administration of Panadol (Paracetamol) on Spleen and Kidney Functions of Adult Albino Mice

Panadol is a remarkable pain and fever reducing non opioid drug. It is known to be completely safe and tolerant medicine throughout the globe among people of all age groups. The goal of this study was to elaborate the histopathological effects of reduced interrupted regime of panadol on spleen and kidney functions of mice (Mus musculus). The animals were categorized into four groups, the control group (C), and rest of the three were labeled as 1, 2 and 3, made on the basis of time interval of pandol administration via gavage (n=7). Matched volume of panadol (15000 µg/0.1ml) and normal saline was given to mice.  Tissue samples were collected after sacrifice of the mice and processed for assessment. The findings of the current study reflected the histopathological damage of kidney and spleen caused by panadol in reduced interval of time. The kidney section illustrated clear distortion in glomeruli integrity, marked increase in interstitial spaces, damaged epithelia, and degeneration in tubules in all the groups. The spleen histology exhibited the degradation of white pulp, depopulation, activation of follicles, cellular disruption thereby overall disorganized stature. The raised values of serum creatinine and blood urea examinations also revealed the deleterious effects of panadol overconsumption. It is inferred from the above mentioned outcomes that though panadol is considered to be a safe drug even then its intake prior to four hours can account for adverse effects on kidney and spleen

Enhancing Performance of Porous Si-Doped GaN based MSM Photodetector Using AC Technique

In this work, we report the formation of porous Si-doped GaN films under a novel alternating current (sine-wave a.c. (50 Hz)) photo-assisted electrochemical etching (ACPEC) conditions. The formation of porous Si-doped GaN by the novel ACPEC is performed in the same electrolyte concentration (4% KOH) used in common de constant current electrochemical etching process. Ultra-violet (UV) illumination is used to assist in the generation of electron-hole pairs, where etching proceeds through the oxidation and consequently, dissolution of the semiconductor surface. The ac formed porous Si-doped GaN with excellent structural and optical properties. According to the FESEM micrographs, the GaN thin films exhibit a homogeneous nanoporous structures with spatial nano-flakes arrangement. The porous layer exhibited a substantial photoluminescence (PL) intensity enhancement with red-shifted band-edge PL peaks associated with the relaxation of compressive stress. The shift of E2(high) to the lower frequency in Raman spectra of the porous GaN films further confirms such a stress relaxation. Electrical characterizations of the MSM photodiodes were carried out by using current-voltage (1-V) measurements indicated that the devices were highly sensitive to ambient light

Chromaticity Properties Of Curcuminoids Dye Nanofibers Prepared By Electrospinning For White Light Downconversion

In this study, the chromaticity properties of curcuminoids dye were studied when it be in nanometer scale, where curcuminoids were loaded in nanofibers using the electrospinning technique. Poly(methyl methacrylate) PMMA was used in three types of viscosity (5, 10 and 15wt%) which were mixed with (curcuma longa L.) powder to produce curcuminoids solution by using the centrifuge to separate the curcuminoids solution from the impurities. Different amounts of polymer solution mixed with curcuminoids (1 to 5 ml) were spun by electrospinning to study its properties. The effect of annealing on samples was studied. The chromatic study of the samples and the effect of the amount and viscosity of the solution were studied by pumping the samples in three different LED wavelengths (365, 390 and 445 nm). The white light chromaticity coordinates (CIE), color temperature (CCT) and color rendering index (CRI) were measured. The optimum CIE, CRI and CCT values of (X = 0.3051; Y = 0.3370), 64 and 6809K, respectively were obtained. By using field emission scanning electron microscope (FESEM) device, the curcuminoids nanofibers diameter was measured, where the values obtained ranged between 191 to 234 nm. After the annealing process, 15 nm nanoparticles were obtained