Product Variants Platform Customization Strategies and Performance of Reconfigurable Manufacturing Systems (RMS)

Customers’ demands and needs are changing over time. As a result, manufacturers are seeking new ways to respond to market changes effectively and efficiently. They include offering customers a wide range of product varieties in a reasonable time while reducing associated costs. One of the prime techniques adopted by manufacturers is mass customization and its enablers, such as product family and product platforms. The main objective of this research is to help manufacturers manage a high level of variety by implementing the most suitable manufacturing strategy and product platform design. Customized Platform To Order (CPTO) has been introduced and compared with existing manufacturing/production strategies, such as assemble to order (ATO). CPTO is a hybrid assemble-to-stock (ATS)/assemble-to-order (ATO) strategy that uses a platform customization approach to increase the efficiency and productivity of manufacturers. The platform(s) design is based on customers’ historical demand rather than on commonality between product variants. In this thesis, the CPTO approach was compared to the ATO and hybrid ATS/ATO strategies. A discrete-event simulation model of the learning factory iFactory in the Intelligent Manufacturing System Centre (IMSC) is developed. The results were then compared with a physical implementation conducted in the (IMS) Centre. The results of this investigation indicated that the CPTO approach provides manufacturers the ability to be more responsive by reducing the lead time by 30% and assembly time by 27% as well as lowering inventory and assembly costs by 24% and 18% respectively for the considered case study. This approach is applicable to products with modular and flexible platforms and both flexible and reconfigurable manufacturing systems

Different Learning Styles of L2 Learners

Learners differ in their learning styles. In general, types of information are learned and processed in numerous and various ways. Language, as one type of this wide range of information, is specifically a particular case since it relates to the most important human communication means. In this paper, the researcher intends to shed light on learners' different styles in learning language in general, and their styles in learning L2, whether it is a second or a foreign language, in particular. The paper stresses the importance of distinguishing learners' different styles in learning languages. The researcher would also concentrate on the necessity of matching the various learners' styles and the educators' teaching strategies in order to develop the students' potentials in learning L2. the paper also presents some implications that may contribute to helping educators and curricula designers identify students' diverse learning styles; and consequently assist their students to understand and modify their own learning styles and achieve a better and higher level of proficiency in L2 learning

The degree of awareness of school principals and the development team of the procedures for building the developmental and procedural plan for the school

The purpose of this study was to identify the degree of awareness of the school principals and the development team of the procedures for building the developmental and procedural plan for the school. In the Directorate of Education of Deir Alla in the Balqa Governorate. To achieve the objectives of the study, the descriptive survey method was used, and a questionnaire consisting of (20) items was developed. The results of the study showed that the degree of awareness of school principals and the development team about the procedures for building the developmental and procedural plan for the school (Was moderate). Moreover, the results indicated that there were no differences in the degree of awareness School principals and development team procedures for building a developmental and procedural plan for the school. According to gender, educational qualification, and experience. The study recommended the need to direct school principals and development teams to determine resource requirements and target the available resources to meet the priority needs in the school that focus on improving students’ academic achievement

The Effect of Extensive Reading on Developing the Grammatical Accuracy of the EFL Freshmen at Al Al-Bayt University

The study aimed at determining the degree of the effect of extensive reading on developing the grammatical  accuracy  of the EFL freshmen at Al-al-Bayt University (a public university in Mafraq city in Northern Jordan).  The study sample consisted of 60 male and female students distributed in two groups: the experimental group and the control group; each group consisted of 30 students. The two groups were randomly selected as representatives of the whole population which includes (158) freshmen students. The subjects in the two groups were given a writing test in which a short paragraph was required to be written. Then the researchers  started to assign several extensive reading tasks of various topics. These readings were read and summarized in written forms by the subjects in the experimental group. After a period of 6 weeks, (20/3 – 1/5) in the second semester of the academic year 2011/2012, the subjects in both groups were given the same test in which they write a short paragraph about: "The difficulties they face in their university life". The two tests (pre and post) were corrected and the researchers compared their results in order to measure the effect of the treatment, which is extensive reading, on the students'  writing  grammatical  accuracy . The scores' mean value and standard deviation in each group were calculated. The study yielded the finding that extensive reading had a positive impact on enhancing the  grammatical accuracy of the EFL freshmen at Al al-Bayt university. Key Words: Extensive Reading, Grammatical Accuracy

Optical Properties Of Treated And Untreated Monocrystalline p- Si<L11>,p-Si<100>, n-Si<l11> and n-Si<100) Wafers In The Visible Region At Room Temperature.

Silicon only based materials have dominated the electronic applications for the past few decades and now the materials have almost reached its saturation point

Liquid-liquid extraction in a pilot scale rotating disc contactor

A study of the hydrodynamics and mass transfer characteristics of a liquid-liquid extraction process in a 450 mm diameter, 4.30 m high Rotating Disc Contactor (R.D.C.) has been undertaken. The literature relating to this type of extractor and the relevant phenomena, such as droplet break-up and coalescence, drop mass transfer and axial mixing has been revjewed. Experiments were performed using the system C1airsol-350-acetone-water and the effects of drop size, drop size-distribution and dispersed phase hold-up on the performance of the R.D.C. established. The results obtained for the two-phase system C1airso1-water have been compared with published correlations: since most of these correlations are based on data obtained from laboratory scale R.D.C.'s, a wide divergence was found. The hydrodynamics data from this study have therefore been correlated to predict the drop size and the dispersed phase hold-up and agreement has been obtained with the experimental data to within +8% for the drop size and +9% for the dispersed phase hold-up. The correlations obtained were modified to include terms involving column dimensions and the data have been correlated with the results obtained from this study together with published data; agreement was generally within +17% for drop size and within +14% for the dispersed phase hold-up. The experimental drop size distributions obtained were in excellent agreement with the upper limit log-normal distributions which should therefore be used in preference to other distribution functions. In the calculation of the overall experimental mass transfer coefficient the mean driving force was determined from the concentration profile along the column using Simpson's Rule and a novel method was developed to calculate the overall theoretical mass transfer coefficient Kca1, involving the drop size distribution diagram to determine the volume percentage of stagnant, circulating and oscillating drops in the sample population. Individual mass transfer coefficients were determined for the corresponding droplet state using different single drop mass transfer models. Kca1 was then calculated as the fractional sum of these individual coefficients and their proportions in the drop sample population. Very good agreement was found between the experimental and theoretical overall mass transfer coefficients. Drop sizes under mass transfer conditions were strongly dependant upon the direction of mass transfer. Drop Sizes in the absence of mass transfer were generally larger than those with solute transfer from the continuous to the dispersed phase, but smaller than those with solute transfer in the opposite direction at corresponding phase flowrates and rotor speed. Under similar operating conditions hold-up was also affected by mass transfer; it was higher when solute transfered from the continuous to the dispersed phase and lower when direction was reversed compared with non-mass transfer operation

The Effect of Group Work and Portfolio in Writing Activities on Developing the Linguistic and Discourse Competences of the EFL Students at Al Al-Bayt University

This study aimed at investigating the effect of group work and portfolio on developing the linguistic and discourse competence of the EFL students at Al-al-Bayt university in Mafraq city in Jordan. The researcher, who is simultaneously an instructor in the department of English language and literature at Al al-Bayt university, conducted her study on the purposeful sample of the obligatory writing 2 course students who are all English major students from 2nd, 3rd, and fourth years. The participants of the study were distributed in the only two writing 2 sections in the first semester of the academic year 2013/2014. They were randomly distributed into two sections, each of 30 male and female EFL students. The experimental group was taught writing the essay through group work and using portfolio whereas the control group was taught writing the essay through the conventional way. At the beginning of the semester, both groups were pre-tested in writing an essay about a chosen topic, and similarly, at the end of the semester, they were post- tested by being asked to write an essay about the same topic of the pre-test. The researcher analyzed and counted the linguistic various errors in their writings in both tests of the two groups; she also quantitatively measured the frequencies of using discourse elements in both tests of both groups. She then calculated the means and standard deviations of both groups' frequencies in order to find any significant differences due to the treatments used. The findings of the study showed that both groups performed better in their discourse competences; on the other hand, both groups showed some progress in some areas of their linguistic competences. According to the interviews with the participants of the experimental group, all students appreciated using portfolio and assured that it improved their linguistic and discourse competences. However, most students valuated group or peer work and their positive impact on their linguistic and discourse competences. Keywords: Portfolio, Group Work, Linguistic Competence, Discourse Competence

The development of critical theory from Greek philosophy until the Renaissance

  The theory -  the opinion of a lot of thinkers contemporary - important theories philosophical, social and which established to enter the era of modernity and beyond, may be a cash German philosopher Kant cornerstone in Renaissance European according to this theory, so try this search with a stamp philosophical and social that highlights the origin of the emergence of these critical theory since the beginning the first to Renaissance, as he tries to that keeps track of their development historical and philosophical and social conditions, political and the surrounding, and what is the position of some of the philosophers of these critical theory. However, the question, which can ask here, is a form of the following: is the critical theory in turn, social, political and in the community, and do have contributed to change the desired which seeks to in the community. The basis of this question it should we have to trace the process of its development historical, and to identify the most important views of the philosophers, which they told the

Organic Fertilizer Application of Shrimp Pond Waste Sediment For Growth And Productivity (Lactuca Sativa Crispa L )

Curly lettuce is one of the types of vegetables favoured by the community, but lately, organic vegetables are more in demand. One effort to get organic vegetables by using organic fertilizer during the planting period. Organic fertilizers come from nature, one of which is shrimp pond sediment whose utilization is not optimal. This study aims to determine the effect of shrimp pond sediment organic fertilizer application for growth and productivity of curly lettuce (Lactuca sativa cispa L). The study was conducted for 40 days, this type of research experiments using a Completely Randomized Design (CRD) with 4 treatments and 1 control and 6 replications. The parameters used include plant height and wet weight of curly lettuce plants. The main data is tabulated and analyzed using the SPSS 16.0 application which includes Multivariate Analysis of Variance (MANOVA). It was concluded that the organic fertilizer of shrimp pond sediment variation P1 (the composition of 100% shrimp pond sediment) provided the most optimal effect on the growth and productivity of curly lettuce (Lactuca sativa crispa L). Brochure validation results indicate that the brochure is very suitable to be used as a source of information about pond organic sediment fertilizer