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Search Results: 1 - 10 of 1245 matches for " Alyas Qadeer Tahir "
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Impact of Globalization of Education and Dynamics of Social Changes in Pakistan: Attitude Scale Construction and Analysis
Alyas Qadeer Tahir
International Journal of Education , 2011,
Abstract: Globalization has been largely influenced and spread due to advancement of technology of communication. There has been emphasis in developing countries to seek public opinion on various aspects of globalization. The trend of globalization has opened up doors for country like Pakistan to explore opinion of its intellectuals on this particular dimension. A study was conducted on this particular issue of international importance. For this purpose, a scale was constructed on the attitude of professors of universities, educationists and the members of Chamber of Commerce and Industries of Pakistan. Initially, a likert scale of twenty five items was constructed and tried out to the respondents. After a comprehensive analysis, the scale was redefined and cut down to sixteen items for administration at larger scale at national level. This study provided an ample opportunity for item’s analysis and exploring the opinions about globalization of education and perspectives of social changes. It was found that respondents generally look in favor of globalization. The result of the t-test showed that no statistically difference exist between opinion of the university professors and educationists whereas there was a statistically significant differences noted between university professors and members of Chambers of Commerce and Industries and similarly between the opinion of educationists and the members of Chamber of Commerce and Industries. There was statistical significance noted at p<0.05 level in academic performance for the two groups F (1. 58) = 5.5351 p=.001 as result of one-way ANOVA. A two-way between-groups ANOVA was also conducted to see the impact of globalization on university professor’s subjects they teach in the category of management sciences, economics/commerce, and natural sciences and the years of experiences they possess. The interaction effect between the subject they teach and their experience was not statistically significant, F (3,94) = .563, p = .471. The main effect for the subject areas, F (3, 96) = .152, p = .736; and the experience of professors possess, F (3, 96) = 1.241, p=.138 did not reach the statistical significance. The results of the study can be viewed in Pakistani perspectives and need to be explored further in regional context.
Developing a Student Centered Inquiry Based Teaching Approach at Elementary Level Science in Pakistan-A Three Years Implementation Cycle
Alyas Qadeer Tahir
Asian Social Science , 2011, DOI: 10.5539/ass.v7n8p241
Abstract: National Curriculum, 2006 is one of the significant measures to improve the quality of education in Pakistan. For General Science, grades IV-VIII, “Student-Centered and Inquiry-Based (SCIB) learning” are a key concept of it. However the system for teachers’ in-service training in the country at the Federal and the Provincial levels is pathetic and many of the teachers do not have chances to be equipped for the new ways of teaching science based on the new curriculum. To address this issue and help Pakistan in this significant task of national importance, the Japan International Cooperation Agency (JICA) undertaken the challenge of coping with the problem and help Pakistan through a technical cooperation project aiming at establishing a training model that ensures teachers to deliver SCIB science lessons. The purpose of this paper is to describe the SCIB project design and the basic policy of a three years implementation cycle that will support in development and sustainability of science curriculum reforms efforts in Pakistan. The process and achievements of the project outlines the development of teaching plans, master trainers training, teacher training, school cluster and baseline survey of schools and organization of forums at the Federal and the Provincial levels. The paper covers an analysis of some issues related to SCIB teaching model development in the perspectives of ground reality and the lesson learned from implementing such innovative projects in past. The concept of Teaching through Easily Available Material (TEAM) and SCIB teaching approach being practiced in Pakistan may be valuable for the developing countries of the region.
2-(2-Fluorobenzoylmethyl)benzoic acid
Muhammad Tahir Hussain,Tariq Mahmood Babar,Ghulam Qadeer,Nasim Hasan Rama
Acta Crystallographica Section E , 2008, DOI: 10.1107/s160053680803540x
Abstract: In the title compound, C15H11FO3, the aromatic rings are oriented at a dihedral angle of 69.26 (3)°. In the crystal structure, inversion dimers arise from pairs of intermolecular O—H...O hydrogen bonds, and C—H...O hydrogen bonds further consolidate the packing. There are also C—H...π contacts between the benzoic acid and 2-fluorobenzene rings.
Newcastle Disease Virus Isolation and Its Prevalence in Uganda Poultry Farms  [PDF]
Keneth Iceland Kasozi, Paul Ssuna, Dickson Stuart Tayebwa, Mohd Alyas
Open Journal of Veterinary Medicine (OJVM) , 2014, DOI: 10.4236/ojvm.2014.41001
Abstract:

The present research work was carried out to isolate and identify Newcastle disease virus (NDV) by using haemagglutination inhibition (HI) test and HA-HI virus isolation, embryonated eggs (EE) and chicken embryo fibroblasts (CEF). A total of 95 clinical (blood, tracheal and cloacal swabs) and post-mortem (brain, lung, colon and spleen) samples were collected from chickens of field outbreaks of suspected Newcastle disease virus (NDV). The HI and HA-HI were employed to detect NDV in tissue homogenates of all the clinical and post-mortem samples as well as laboratory samples (AF and ICF). Among the four different types of post-mortem samples, virus isolation rate was found to be low in body organs. In CEF cell culture system, the rate of virus isolation from all the aforesaid samples was found to be at 100% with the exception of serum samples; while in tracheal and cloacal swabs, it was at 90%; while in serum, it was at 10%, in all clinical cases. The isolation rate of NDV was higher in CEF culture system (66.7%) compared to that of avian embryos (33.3%). Samples were inoculated and the allantoic fluid (AF) of the dead embryos and the infected culture fluid (ICF) of the CEF were harvested at 24 to 96 hours of the post-infection, respectively, which revealed that the virulent strain of NDV is highly prevalent in the region. The prevalence of NDV was established at 1.1%, 2.1% and 4.2% using HA-HI, EE, and CEF methods. Rapid detection and identification of the virus are crucial for the effective control of the disease as conventional diagnostic methods such

Verifying Sequential Consistency on Shared-Memory Multiprocessors by Model Checking
Shaz Qadeer
Computer Science , 2001,
Abstract: The memory model of a shared-memory multiprocessor is a contract between the designer and programmer of the multiprocessor. The sequential consistency memory model specifies a total order among the memory (read and write) events performed at each processor. A trace of a memory system satisfies sequential consistency if there exists a total order of all memory events in the trace that is both consistent with the total order at each processor and has the property that every read event to a location returns the value of the last write to that location. Descriptions of shared-memory systems are typically parameterized by the number of processors, the number of memory locations, and the number of data values. It has been shown that even for finite parameter values, verifying sequential consistency on general shared-memory systems is undecidable. We observe that, in practice, shared-memory systems satisfy the properties of causality and data independence. Causality is the property that values of read events flow from values of write events. Data independence is the property that all traces can be generated by renaming data values from traces where the written values are distinct from each other. If a causal and data independent system also has the property that the logical order of write events to each location is identical to their temporal order, then sequential consistency can be verified algorithmically. Specifically, we present a model checking algorithm to verify sequential consistency on such systems for a finite number of processors and memory locations and an arbitrary number of data values.
Use of Masonry Construction & Demolition Waste in Concrete  [PDF]
Tahir Kibriya, Leena Tahir
World Journal of Engineering and Technology (WJET) , 2017, DOI: 10.4236/wjet.2017.52017
Abstract: Massive amounts of brick waste are obtained from demolition of old buildings and structures around the world. With the increased stress on sustainable construction, and environmentally friendly materials and greener concreting practices, a large proportion of such waste bricks are crushed and mixed with normal aggregates for use in concrete. The performance of concrete containing waste brick aggregates partially replacing normal aggregates have not been investigated for their performance. This paper covers investigations carried out on concrete with such aggregates obtained from demolition waste and mixed with varying proportions of normal aggregates to produce concrete. Two types of crushed brick aggregates were mixed with gravel in the ratios of 30:70 and 40:60 by weight and specimen were cast for investigations. Two w/c ratios were investigated. Various tests were carried out to assess the compressive strength of cubes and cylinders of mixed aggregates concrete along with f1exural strength, stress/strain behavior, moduli of elasticity, ultrasonic pulse velocity determination, densities, surface absorption, shrinkage and frost resistance. The values obtained from these tests were compared with the values of concrete with normal aggregates (gravel) with similar w/c ratios. While the strength tests and durability tests more or less gave satisfactory results however the larger moisture absorption by the waste brick aggregates reduces the frost resistance capacity somewhat thereby care needs to be exercised in using these mixes in regions/areas susceptible to frost.
Sustainable Construction—High Performance Concrete Containing Limestone Dust as Filler  [PDF]
Tahir Kibriya, Leena Tahir
World Journal of Engineering and Technology (WJET) , 2017, DOI: 10.4236/wjet.2017.53034
Abstract: Massive amounts of limestone waste are produced by the stone processing industry worldwide. Generally, it is believed that 60% to 70% of the stone is wasted in processing in the form of fragments, powder and slurry out of which around 30% is in the form of fine powder [1]. This waste has no beneficial usage and poses environmental hazards. Use of this waste product in the construction industry can largely reduce the amount of waste to be disposed off by the local municipalities in addition to reducing large burden on the environment. Some basic research on use of limestone dust as cement/ concrete filler?has?been carried out in the recent past but high strength/ high performance concretes have not been investigated yet [2] [3]. The concrete industry is among the largest consumer of raw materials worldwide and has been investigated for use of various types of waste materials like crushed brick, rice husk and straw ash as either aggregates for concrete or as partial cement substitutes. Use of limestone dust as filler material in concrete can consume a huge amount of this waste material which has to be disposed off otherwise, creating large burden on the environment. This experimental study aimed at evaluating the properties of high performance concretes made from Portland cement, natural aggregates and sand. Limestone dust was added by replacing sand in the percentages of 10% and 20%. Wide ranging investigations covering most aspects of mechanical behavior and permeability were carried out for various mixes for compressive strengths of 60?N/mm2, 80?N/mm2 and 100?N/mm2.
Sustainable Construction—Use of Stone Dust as Plasticiser in High Strength SCC with Blended Cement  [PDF]
Tahir Kibriya, Leena Tahir
World Journal of Engineering and Technology (WJET) , 2017, DOI: 10.4236/wjet.2017.53035
Abstract: Extensive growth in the developing countries due to infrastructure development is resulting into massive consumption of concrete thereby increasing the demand on concrete materials. Quite large amounts of fine aggregates are required for concrete in developing countries thus shortages of quality river sand is putting pressure on availability of fine aggregates. To fulfill the high demand of fine aggregates, a search for alternative materials is in process. Stone crushing and processing industry is a large industry which generates large amounts of stone dust and slurry which is a waste produced from this process. Tons of such waste generated has no useful purpose except as landfill material. Some preliminary studies have been conducted into use of marble/ limestone waste for use in concrete [1] [2].?This study aims at using stone dust as partial replacement of sand in concrete to observe its effects on workability and other mechanical properties. This would result in useful consumption of this waste product thereby eliminating environmental issues related to its disposal. Partial replacement of 10% and 20% sand replacement with stone dust is carried out with the use of self-compacting concrete with blended cement. Blended cement used contains 50% rice husk ash and 50% Portland cement. Such high strength SCC with blended cement containing 50% rice husk ash and 50% Portland cement has already been tested to provide better quality concrete [3]. Wide ranging investigations covering most aspects of mechanical behavior and permeability were carried out for various mixes for compressive strengths of 60?MPa & 80?MPa. Compressive strengths of high strength SCC with blended cements and 10% and 20% replacement of sand with stone dust for 60?MPa and 80?MPa were observed to be higher by about 10% to 13% than the control specimen. Higher elastic moduli and reduced permeability were observed along with better sulphate and
Spindle Cell Carcinoma of the Maxilla: A Case Report of Rare Entity  [PDF]
Montasir Junaid, Maliha Kazi, Sadaf Qadeer
Surgical Science (SS) , 2017, DOI: 10.4236/ss.2017.85025
Abstract: Spindle cell carcinoma also known as sarcomatoid carcinoma is a rare highly aggressive tumor which is histologically different from squamous cell ca and mesenchymal cancers. Only hands full of cases have been reported in literature since 1957 and hence no proper treatment protocol has been devised yet. We present such a case of thirty-four-year-old female who presented with spindle cell carcinoma of the maxilla at our department and was treated with extensive surgery followed by chemotherapy and radiation therapy. Spindle cell carcinoma is generally associated with poor prognosis and hence literature supports use of post operative Chemo and Radiotherapy for better result and decrease chance of local recurrence.
The Evolution of Laser in Laryngology  [PDF]
Asil Tahir
International Journal of Otolaryngology and Head & Neck Surgery (IJOHNS) , 2015, DOI: 10.4236/ijohns.2015.42024
Abstract: Technological breakthroughs in physics are often adapted and incorporated into the ever growing field of otolaryngology. When first discovered, “The Incredible Laser” had promised to be science’s new “Aladdin’s lamp”, it can “light up the moon”, “kill instantly”, or “perform miracle surgery” [1]. Although not quite fulfilling these roles, laser technology has been a key element in the development of endolaryngeal surgery. This article looks at the invention of Laser and it’s progression into an invaluable tool in the field of laryngeal surgery.
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