Global

Teaching is mainly an outcome of a teacher’s perception. Whatever teachers do in their classrooms is an outcome of their educational beliefs, whether they are aware of their teaching philosophy or not. Teacher’s belief about how better a foreign language can be learned plays a significant role in deciding how they will conduct their classes. English teachers have their beliefs and perceptions about various classroom activities and accordingly they execute these beliefs and knowledge in their classroom practices. But, does it always happen? Very often it is found that their classroom practices bear the poorest samples of their beliefs. This case study investigates a university teacher’s beliefs about classroom interaction and her real classroom practices. A questionnaire will be used to elicit the teacher’s belief about interaction. Observation of her classes in the light of interactive activities will be done. An attempt will be made to see if there is any mismatch between belief and practice. Does belief change over time through training? Is there anything that resists change?
Based on a statement of the essential concepts that are part of the theory of recognition, we investigate its connections with various psychotherapeutic approaches sources. Then reflect on certain risks in its application to propose finally a structure interview based on their contri-butions.
Oran is relatively a city with the worst quality of the water. Recently, the growing populations may put stress on natural waters by impairing the quality of the water. Unfortunately, certain stretches of the watershed are polluted. It has scarce physicchemical data on its water resources that could assist in making robust decision in mitigating the impact of human societies on natural waters; which may not only preserve natural areas, but improve the quality of life of her growing population. In an attempt to study the environmental impact on water quality, an investigation was carried out to monitor the water quality over a period from 04 to 20 July 2011. So fifty samples were collected and analyzed. The water physico-chemistry prior was consistent with that of researches done previously in that area. The average value of different parameters are: pH 6.8, electric conductivity 6,06 (dS/m), chloride 1780 (mg/l), sodium 1811(mg/l), sulfate 631 (mg/l), nitrate 27 (mg/l), magnesium 177 (mg/l), calcium 321 (mg/l) and bicarbonate 327(mg/l). Higher values of the physical-chemical parameters of water obtained in the present study sites indicate that the results obtained fell within the maximum allowable limit set by the World Health Organization for drinking water.
Rodent populations at airports can cause human safety issues by attracting raptors ... be, expended to reduce of rodent populations at an airport may decrease birds population in the area and therefore, reduce the risk that raptors pose to aircraft. Rodent populations can be reduced by population management (i.e., use of rodenticides) or by habitat management (i.e., vegetation management, barriers, and land uses) that reduces the area’s carrying capacity for rodents. We discuss potential approaches to reduce rodent populations at airports within the context of an integrated pest management strategy.
In power system, one most crucial problem is maintaining system stability. The main reasons for occurring stability problem in the system is due to the fault occurs in the system. This paper presents the model of a Unified Power Flow Controller (UPFC) which is externally controlled by a cascade Proportional Integral Differential (PID) controller for the improvements of voltage stability on line power system. The cascade PID controller parameters has been selected by using Tyreus-Luyben settings method for primary loop controller and modified Ziegler-Nichols method for secondary loop controller. Cascade control is mainly used to achieve fast rejection of disturbance before it propagates to the other parts of the plant.PID controller in cascade architecture is the best choice compared to conventional single loop control system for controlling nonlinear processs. The primary controller is used to calculate the setpoint for the secondrary controller. Both single phase and three phase faults have been considered in the research. In this paper, A power system network is considered which is simulated in the phasor simulation method & the network is simulated in three steps; without UPFC, With UPFC but no externally controlled, UPFC with cascade PID. Simulation result shows that without UPFC, the system parameters becomes unstable during faults. When UPFC is imposed in the network, then system parameters becomes stable. Again, when UPFC is controlled externally by cascade PID controllers, then system parameters (V,P,Q) becomes stable in faster way then without controller. It has been observed that the UPFC ratings are only 10 MVA with controllers and 100 MVA without controllers. So, UPFC with cascade PID controllers are more effective to enhance the voltage stability and increases power transmission capacity of a power system. The power system oscillations is also reduced with controllers in compared to that of without controllers. So with cascade PID controllers the system
Consumers are playing an important responsibility in online shopping. When online retailers can identify the factors that can affect consumers’ buying behaviour and the associations between these factors and type of online buyers, then they can further widen their marketing strategies to convert potential customers into active ones and at the same time remain the loyal customer as one of the asset of the business. The purpose of the paper will focus on some consumer perception toward buying online decision. It was discovered that overall website quality, commitment factor,customer service and purchase decision are key factors which influence consumers’ perceptions, satisfaction and loyalty of online shopping. When customer unsatisfied with their purchases or increase number of acceptable brand, an individual will become less loyal and brand switching will be occur.
Plantar dislocation of the first metatarsophalangeal joint is an extremely rare primary hyperflexion injury of forefoot. A 32-year-old female was admitted to our emergency with a deformity and pain on his right foot. Dislocation was caused by motor vehicle. On physical examination mild swelling of the first MTPJ and plantar dislocation of the great toe were evident. Diagnosis was made on anteroposterior, and medial oblique radiographs. They confirmed a plantar dislocation of the right first MTPJ. The patient was treated with closed reduction of the first metatarsophalangeal joint by means of distraction. Twenty months after surgery no osteoarthritic changes, no narrowing and no limitation of the first MTPJ were encountered. The clinical result was good and the patient was satisfied.
Opacity of lens is called cataract. Blindness due to cataract increases to great extent globally, more than 50 % people are experiencing profound or total loss of vision due to cataract. Oxidative damage plays major role in cataract development and defects are recorded in the antioxidant and related enzymes in lens during this disease. The mean value of GLUTATHION REDUCTASE activity is 1.463 ± 0.079 and 0.730 ± 0.062 n moles/min/mg, GLUTATHION-S-TRANSFERASE activity is 1.780 ± 0.069 and 0.545 ± 0.342 n moles/min/mg and Y-GLUTAMYL TRANSPEPTIRASE activity is 9.595 ± 0.094 and 3.7 ± 0.216 n moles/min/mg respectively for normal and cataractous lenses. An explanation for fall in GLUTATHION REDUCTASE activity would be the inhibitory effect of oxidants on the activity of reducing enzymes. The activity of GLUTATHION-S-TRANSFERASE is very low compared to GLUTATHION REDUCTASE and Y-GLUTAMYL TRANSPEPTIRASE. The turn over of GSH by Y-GLUTAMYL TRANSPEPTIRASE and GLUTATHION-S-TRANSFERASE is thought to be groups led with several factors including GSH level. Altered activity of the enzymes associated with the synthesis, catabolism and utilization of glutathione in the lens have been reported in mixed type of cataract.
Image Compression has become extremely important today with the continuous development of internet, remote sensing and satellite communication techniques. In general, single Wavelet is not suitable for all types of images. This paper proposes a novel approach for dynamic selection of suitable wavelet and effective Image Compression. Dynamic selection of suitable wavelet for different types of images, like natural images, synthetic images, medical images and etc, is done using Counter Propagation Neural Network which consists of two layers: Unsupervised Kohonen (SOFM) and Supervised Gross berg layers. Selection of suitable wavelet is done by measuring some of the statistical parameters of image, like Image Activity Measure (IAM) and Spatial Frequency (SF), as they are strongly correlated with each other. After selecting suitable wavelet, effective image compression is done with MLFFNN with EBP training algorithm for LL2 component. Modified run length coding is applied on LH2 and HL2components with hard threshold and discarding all other sub-bands which do not effect much the quality (both subjective and objective) (HH2, LH1, HL1 and HH1). Highest CR (191.53), PSNR (78.38 dB), and minimum MSE (0.00094) of still color images are obtained compared to SOFM, EZW and SPIHT.
Cellulose nanofibres were extracted from natural fibre Jute by a chemical and mechanical technique to examine their potential for use as reinforcement fibres in biocomposite applications. The Present work was to investigate the possibilities of breaking down the sub-micron fibrillar structure to fabricate submicron and nano particles by high energy ball milling. Nano fibres of jute were characterized by X Ray Diffraction and its structural morphology has studied by Scanning electron microscope. FT-IR spectroscopy analysis showed that the lignin and hemicelluloses was removed for NaoH treated jute fibres. The XRD analysis that the particle size distribution reduced from micro to 20-50 nm. SEM observations revealed that the nano particles of jute fibre were exhibited spherical and elliptical shape. Nanofibre composites were prepared with different weight percentages (1 wt. % to 5 wt. %) via hand lay-up technique. The mechanical properties of nanofibre reinforcement has improved when compared with the virgin composite. The maximum improvements were observed in 3 wt. % Jute nanofibre composites.