Challenges of Novice Teachers and Strategies to Cope at Secondary Level

The main purpose of this research study was to find out challenges of novice teachers affecting their performance and suggest measures to control their attrition. Population of the study comprised all novice teachers of public sector girls secondary schools of Sahiwal, Okara and Pakpattan districts. Sample of the study consisted on 206 novice teachers randomly selected from 45 schools out of population. A self-developed questionnaire consisted on Five - point Likert scale was used to collect data, which was organized, tabulated, analyzed and interpreted by using mean score, frequency score, percentage, standard deviation and t-value. It was found that lack of conducive school environment, non-supportive head teachers attitude, lack of pedagogical skills and students disruptive behavior create hindrances for novice teachers to perform their duties in better ways. It was recommended that provision of head teachers supportive attitude and conducive school environment prove helpful in novice teachers job retention.

EXPERIMENTAL DETERMINATION OF LAMINAR BURNING VELOCITY OF BIOGAS AT PRESSURES UP TO 5 BAR

This paper presents a very detailed description of a new cylindrical constant volume combustion chamber designed for laminar burning velocity determination of gaseous mixtures at ambient temperature and initial pressure up to 6 bar. The experimental setup, the experimental procedure and the determination of the range of flame radius for laminar burning determination are all described in details. The laminar burning velocity of twelve synthetic biogas mixtures has been studied. Initial pressure varying between 1 and 5 bar, equivalence ratios, f, between 0.7 and 1.1 and percentage dilution, with a mixture of CO2 and N2, between 35 and 55% have been considered. Five experiments were run for each mixture providing a maximum percentage standard deviation of 8.11%. However, for two third of the mixtures this value is lower than 3.55%. A comparison with simulation using PREMIX for both GRI-Mech 3.0 and San Diego mechanisms has provided closer agreement for mixtures with equivalence ratio closer to stoichiometry whereas for f = 0.7 the deviation is larger than 15% for all pressures. Mixtures with lower equivalence ratio, higher dilution percentage and higher initial pressure presents the lower values of laminar burning velocity.

Organizational Development Towards Excellent Management

This study will use the Kirkpatrick Assessment Model to assess the School Excellence program through Organization Development (PrOD). This model involves evaluation of reactions, learning (knowledge, skills and attitude), behavior and outcomes, but this study only assesses knowledge and behavior . This study uses survey method by involving 120 respondents of the study chosen by group sampling. The instrument is a questionnaire that has Cronbach Alpha value between 0.930-0.984. The data were analyzed using mean score, percentage, standard deviation and regression. Analysis findings show that there is a significant difference between the level of knowledge and behavior before and after the PrOD. Overall, this study recommends PrOD to be continued, but it is necessary to improve in the formulation of PrOD syllabus so that school leaders can improve the behavior change in meaningful and meaningful implementation of the PrOD.

Keberkesanan Penggunaan Grafik Berkomputer Sebagai Alat Bahan Bantu Mengajar Dalam Kalangan Pelajar Reka Bentuk Dan Teknologi

This study aims to identify the effectiveness of computerized graphics usage as a teaching tool among students in a secondary school. A total of 30 students were chosen as respondents for this study. The research instruments used were questionnaire, pre and post test. A set of questionnaire comprising two parts, part A (respondents’ demographics) and part B (questions related to research questions) were used. The data obtained were processed and analyzed using Statictical Package for Social Science version 20 (SPSS). While data analysis used was descriptive statistical values such as frequency, percentage, standard deviation, mean and T-test. In addition, students were divided into two groups, namely traditional group and Graphic learning group. The findings of the study showed that computerized learning graphs could affect and increase interest and motivation. Furthermore, through pre and post tests, there was a difference in the achievement of Form 1 students in Design and Technology (RBT) subject using computerized graphics with the use of traditional learning methods

Determination of the Iodine Content of Some Commonly Consumed Foods in Zaria Metropolis, Nigeria, Using PCNAA and Sandell-Kolthoff Reaction

The Nigerian Research Reactor-1 was employed in the analysis of iodine in local food samples at an operating flux of 5.0×1011 ncm−2 s−1. Preconcentration neutron activation analysis (PCNAA) was compared against the most common spectroscopic (Sandell-Kolthoff reaction) technique, giving a concentration range of 0.295 to 2.960 mg/Kg and 0.264 to 2.725 mg/Kg, respectively, with an average percentage deviation of 11.34% and a positive correlation between the methods at 0.89. PCNAA and Sandell-Kolthoff spectroscopy of NIST 1548a reported values of 0.759±0.06 mg/Kg and 0.751±0.05 with Student’s t-test score of 1 and 0.95 and percentage standard deviation of 0 and 1.12%, respectively.

A statistical examination of the catches, numbers, and biomass taken by three commonly used plankton nets

A comparison has been made between the Indian Ocean standard net (IOSN), the tropical Juday net (TJN), and the Clarke-Bumpus sampler (CBS). Various components of the zooplankton have been counted and the results submitted to analyses of variance. The variability of the catches is greatest with the TJN, the percentage standard deviation of a single observation rangingfrom 73 to 135 %; the valuesfor the IOSN and the CBS are similar toeach other: 42-51 %. The greater variability of the TJNis ascribed to its smaller mesh with consequent clogging, and arises from variability in the volume filtered and from the difficulty of washing down such a large and fine net efficiently. There is no evidence that the larger zooplankton avoid the smaller CBS any more successfully than they avoid the two large nets; as expected, the smaller zooplankton organisms escape more readily through the IOSN with its coarser meshes than through the other two nets. The catches for the IOSN and the CBS agree very well when expressed per volume of water filtered. The main advantage of the larger nets--as regards the organisms considered here-is in the greater volume of water filtered; this would be of importance if a large bulk of material were required for, say, chemical analysis or if a search were being made for rare organisms.