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Towards understanding tolerance to damage causing mammalian wildlife by Kansky, Ruth
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Page will reload when a filter is selected or excluded.- Cowpea radio-sensitivity 2 results 2
- Gamma irradiated cowpea seed 2 results 2
- Mutant phenotypes 2 results 2
- Pollen mutagenesis 2 results 2
- Ultra-violet irradiated pollen 2 results 2
- " The study sought to investigate how pre school teachers and their pupils interact during instruction in numeracy lessons in Nigeria. The sample consisted of 2859 pupils from 72 pre-primary institutions/classrooms (selected through stratified random sampling to ensure adequate representation of private, public, urban and rural schools). The collection of data involved using two observational instruments (Classroom Interaction Sheet, CIS and Ten- Minute Interaction Instrument, TMI) to record interaction patterns in 72 lessons during the teaching of numeracy. Data analysis involved the use of frequency, percentages, chi-square and graphical illustrations. The result revealed that the major language of instruction was English language rather than the language of the pupils’ immediate community; the use of instructional time and direction of interaction tend to be sensitive to language of instruction; teacher-initiated interactions and whole class activities are associated more with the use of English as language of instruction while learner-initiated interactions and individual/small group activities are associated more with use of language of the pupils’ immediate community in instructional delivery; and the direction of communication was mainly from the teacher to the whole class. " 1 results 1
- "The tense phrase (TP) domain is the domain that expresses grammatical tense, aspect and mood. Existing studies concentrated on describing the morph-syntactic features of the Igbo TP categories with little attention paid to their interaction and hierarchical order. This study, therefore, investigates the morpho-syntactic features and interaction of the functors with a view to determining their hierarchical order in the clause structure. Primary and secondary data were collected and subjected to syntactic analysis. Three main functors, Tense, Aspect and Negation, overtly occur in the Igbo TP area as verbal affixes and they exhibit two opposing patterns of morpheme order: V-T-ASP-NEG and T-ASP-NEG-V. The former, where the functors follow the verb, requires obligatory movement of the VP to spec TP, while the latter requires no such movement since the functors precede the verb. The study demonstrated that these morpheme orders are derived syntactically via operation merge with surface order corresponding to the hierarchical order. This is in contrast to preceding studies which assume mirror image where the linear order is the inverse of the hierarchical order. 1 results 1
- 16SrRNA 1 results 1
- Aspect 1 results 1
- Assessment and testing 1 results 1
- Attitude, 1 results 1
- Available literature on Ilaje society has been concerned with the legal framework of colonial rule, indigenous political structure, economic development and missionary activities. There has not been any extensive study on the Ugbo-Mahin conflict and its implications for social development. This study, therefore, examined the Ugbo-Mahin conflict in Ilaje area of Ondo state with specific focus on its implications for social relations, oil exploration and compensation, infrastructural development, kingship and religious institutions. The study also investigated and interrogated the pre-conflict pattern of interactions between the Ugbo and the Mahin and how they have been affected. The principal instrument of data collection for the study was the unstructured interview. In-depth interview were held with fifty community and opinion leaders from each of the two communities. Four Focus Group Discussions were held with persons knowledgeable about the conflict. Archival materials, petition and letters of protest and photographs were used. Data were also collected from reports of government commissions of inquiry, books, journals, newspapers and internet materials. The data were then subjected to content analysis. The Ugbo and Mahin had friendly relationship before the advent of colonial rule. The Ugbo-Mahin conflict dated back to the colonial period and is carried into contemporary times. The conflict has led to destruction of lives and property in the area. Different ethnic unions of parallel functions have emerged in the two communities. These unions have used their rivalry to stall industrial development by demanding separately for improved social life. The Ugbo-Mahin incessant conflicts have, thus, undermined development in the two communities such that there are no industrial estates, manufacturing companies and large business investment. The conflict has further put stress on marital harmony between the two groups. However, the conflict has not escalated into unmanageable situation because of the activities of the Ilaje Youth Forum, the National Association of Ilaje Students and Egbe OmoIlaje who are responsible for peace building and reconciliation of all aggrieved parties in both communities. In spite of the efforts of these associations, the marginalization of the Mahin in the compensation on oil spillage and other ecological problems occasioned by the oil exploration in Ugboland and the discrimination against them in appointment of representatives to oil commissions are some of the factors inhibiting sustainable peace and development. The Ugbo-Mahin conflict over the years had done incalculable damage and has not allowed harmonious relationship between two ethnic groups. There is a need for the promotion of non-violent means in managing the conflict and facilitation of peace education in the society. Both of which aim at psycho-social healing and psychological transformation towards peaceful co-existence in the two communities. There is need for the encouragement of inter-marriages and cultural re-integration of the two groups. 1 results 1
- Bingo game strategy 1 results 1
- Classroom interaction 1 results 1
- Communal conflict 1 results 1
- Commuter threshold 1 results 1
- Cowpea, Vigna unguiculata, is an important human and livestock protein source in Nigeria, but its production is constrained by ravages of pests and climate change. Conventional breeding efforts used to fortify it against these constraints had resulted into its narrow genetic base. In order to overcome this challenge, other mutation procedures such as physical and chemical mutagens could be used. Nevertheless, information on gamma and ultra-violet (UV) irradiated cowpea seeds and pollen has not been adequately documented. Therefore, genetic analysis of cowpea mutants from gamma and UV irradiated seeds and pollen, respectively was investigated. Cowpea accessions seeds: IB, IB-Y1, IB-CR and IB-BPC from the University of Ibadan and IT86D-719, IT86D-1010, IT89KD-347-57 and IT90K-284-2 from International Institute of Tropical Agriculture were irradiated at 100, 200, 300, 400 and 500 Gy doses at the rate of 202 Gy/min using 60Co gamma. Pollen were irradiated for 60, 120, 180, 240, 300 and 360 minutes at 30,000µWs/cm2 UV prior to hand self-pollination using standard procedures. Radio-sensitivity of irradiated accessions were determined using seed germination (SG), seedling survival (SV), lethal dosage 50% (LD50) for SG and SV, primary leaf area (PLA) and seed set (SS) at M1 and M2 generations. The M1 of gamma irradiation (GI) and M2 of UV irradiation (UVI) treatments were advanced to M2GI and M3UV for phenotyping on field and their genetic stability confirmed at M3GI and M4UV, respectively. Genetic diversity of all mutants was determined using microsatellites. Ribulose-bisphosphate carboxylase primers were used for sequence analysis and classification of the mutants. Inheritance pattern was evaluated at M5 of gamma induced mutants (GIM) for erect-tall (ER), yellow flush (YF), four-primary leaf (FP), crinkled leaf, lettuce leaf (LL), twisted-pale leaf (TP) and burnt leaf (BL) traits. Data were analysed using descriptive statistics and Chi-square at α0.05. The M1 generation of IT90K-284-2 had 74.0% SG, while each of IB, IB-Y-1, IB-CR and IB-BPC had 20.0% SG at 500 Gy of GI. The IB, IB-Y-1, IB-CR and IB-BPC had 0.0% SV each, while 50.0% was observed in IT86D-1010 and IT90K-284-2 at 400 and 500 Gy, respectively. The LD50 for SG and SV were lowest (326 and 149 Gy, respectively) in IB-Y-1 and highest (1053 and 620 Gy, respectively) in IT90K-284-2. The PLA of M1 ranged from 2.17±0.26cm2 to 5.98±0.85cm2. Low GI (100 Gy) and UVI (60min) increased SS of M1 plants. Mutant phenotypes and frequencies varied across the cowpea accessions and did not correspond to GI treatments. Ten GIM were stable at M3, whereas all UV induced mutants reverted to normal at M4. Polymorphic information content (0.51) obtained from microsatellites showed wide genetic diversity among the mutants and parental lines. The main mutant classes were insertion-deletions and point mutations. Inheritance of ER, TP, YF, FP and BN followed monogenic recessive pattern. Genetic interaction of crinkled and TP in homozygous recessive (crl crl tp tp) conditioned LL phenotype. Radio-sensitivity of cowpea to gamma irradiation varied among the accessions. Ultra-violet radiation was less potent for cowpea pollen mutagenesis and might not be effective for mutation breeding. 1 results 1
- Cowpea, Vigna unguiculata, is an important human and livestock protein source in Nigeria, but its production is constrained by ravages of pests and climate change. Conventional breeding efforts used to fortify it against these constraints had resulted into its narrow genetic base. In order to overcome this challenge, other mutation procedures such as physical and chemical mutagens could be used. Nevertheless, information on gamma and ultra-violet (UV) irradiated cowpea seeds and pollen has not been adequately documented. Therefore, genetic analysis of cowpea mutants from gamma and UV irradiated seeds and pollen, respectively was investigated. Cowpea accessions seeds: IB, IB-Y1, IB-CR and IB-BPC from the University of Ibadan and IT86D-719, IT86D-1010, IT89KD-347-57 and IT90K-284-2 from International Institute of Tropical Agriculture were irradiated at 100, 200, 300, 400 and 500 Gy doses at the rate of 202 Gy/min using 60Co gamma. Pollen were irradiated for 60, 120, 180, 240, 300 and 360 minutes at 30,000μWs/cm2 UV prior to hand self-pollination using standard procedures. Radio-sensitivity of irradiated accessions were determined using seed germination (SG), seedling survival (SV), lethal dosage 50% (LD50) for SG and SV, primary leaf area (PLA) and seed set (SS) at M1 and M2 generations. The M1 of gamma irradiation (GI) and M2 of UV irradiation (UVI) treatments were advanced to M2GI and M3UV for phenotyping on field and their genetic stability confirmed at M3GI and M4UV, respectively. Genetic diversity of all mutants was determined using microsatellites. Ribulose-bisphosphate carboxylase primers were used for sequence analysis and classification of the mutants. Inheritance pattern was evaluated at M5 of gamma induced mutants (GIM) for erect-tall (ER), yellow flush (YF), four-primary leaf (FP), crinkled leaf, lettuce leaf (LL), twisted-pale leaf (TP) and burnt leaf (BL) traits. Data were analysed using descriptive statistics and Chi-square at α0.05. The M1 generation of IT90K-284-2 had 74.0% SG, while each of IB, IB-Y-1, IB-CR and IB-BPC had 20.0% SG at 500 Gy of GI. The IB, IB-Y-1, IB-CR and IB-BPC had UNIVERSITY OF IBADAN LIBRARY iii 0.0% SV each, while 50.0% was observed in IT86D-1010 and IT90K-284-2 at 400 and 500 Gy, respectively. The LD50 for SG and SV were lowest (326 and 149 Gy, respectively) in IB-Y-1 and highest (1053 and 620 Gy, respectively) in IT90K-284-2. The PLA of M1 ranged from 2.17±0.26cm2 to 5.98±0.85cm2. Low GI (100 Gy) and UVI (60min) increased SS of M1 plants. Mutant phenotypes and frequencies varied across the cowpea accessions and did not correspond to GI treatments. Ten GIM were stable at M3, whereas all UV induced mutants reverted to normal at M4. Polymorphic information content (0.51) obtained from microsatellites showed wide genetic diversity among the mutants and parental lines. The main mutant classes were insertion-deletions and point mutations. Inheritance of ER, TP, YF, FP and BN followed monogenic recessive pattern. Genetic interaction of crinkled and TP in homozygous recessive (crl crl tp tp) conditioned LL phenotype. Radio-sensitivity of cowpea to gamma irradiation varied among the accessions. Ultra-violet radiation was less potent for cowpea pollen mutagenesis and might not be effective for mutation breeding. Keywords: Cowpea radio-sensitivity, Gamma irradiated cowpea seed, Ultra-violet irradiated pollen, Mutant phenotypes, Pollen mutagenesis. Word count: 499 1 results 1
- Enrolment pattern and achievement in Chemistry over the years appears not to have reflected the importance of the subject in the scientific and technological development of the nation. This problem is attributed to poor teaching/learning methods used in schools. However, there is the need to study possible effects of student-centred strategies on learning outcomes in Chemistry. This study, therefore, investigated the effects of three model teaching methods; Problem-Based (PB), Textbook-with-Assessment (TwA), and combination of PB and TwA learning approaches on academic achievements and practical skills of secondary school Chemistry students in South-West, Nigeria. The study adopted pretest and posttest control group in quasi-experimental setting with 4x3x2 non- randomized factorial design. Opportunity-To-Learn (OTL) and school type were used as moderator variables. Two hundred and eighty-one senior secondary school two Chemistry students drawn from four single-sex and four co-educational Federal Government Colleges participated. Treatments were randomly assigned to groups. For instance, PB was used by group one, TwA was used by group two, PB and TwA was used by group three while conventional method was used by the control group. Chemistry Achievement Test (r = 0.78), Chemistry Manipulative Skill Scale (r = 0.87) and Students' Questionnaire for Assessment of OTL (r = 0.79) were used for collection of data. Chemistry Treatment Manuals were used as guide for teaching in each of the three experimental groups and the control. Descriptive statistics, Analysis of Covariance and Scheffe Post Hoc Multiple Comparison were used to analyse data at 0.05 level of significance. Learning approaches had significant effect on students' academic achievement (F(3,262)=15.88) and practical skills in Chemistry (F (3,262) = 211.59). Problem-Based group scored highest (x ?=29.38), followed by combination of PB and TwA group (x ?= 27.97), and TwA group (x ?=25.64), while the conventional group had the lowest score (x ? =25.06) in academic achievement. In practical skills, combination of PB and TwA group scored highest (x ? = 118.99), followed by TwA group (x ? = 114.32), PB group (x ?= 110.75) with conventional group scoring the least (x ? =81.47). School type (F1,262 =38.29) had significant main effect on practical skills but not on academic achievement. Opportunity-To-Learn showed no significant main effects on academic achievement and practical skills. However, the three learning approaches and OTL had no significant improvement on academic achievement and practical skills. Treatment and school type had interaction effects on academic achievement (F1,262=6-911) and practical skills (F1, 1,262= 8.424). Interaction effects of treatment, OTL and school type showed no significant improvement on either academic achievement or practical skills. Problem-based and Textbook-with-Assessment learning approaches improved the academic achievement of students in Chemistry irrespective of the effect of OTL and school type. Teachers in co-educational colleges, when teaching practical Chemistry, should emphasize its importance to students' understanding of the theory and to improve their examination scores. 1 results 1
- Igbo 1 results 1
- Ilaje society 1 results 1
- In this study, the preferential solvation of Mordant Black and Solochrome Dark Blue were investigated in mixed solvent systems of aqueous methanol, ethanol, propan-1-ol, propan-2-ol, methanol: ethanol, ethanol:propan-1-ol, methanol:propan-2-ol, ethanol:propan-1-ol, ethanol:propan-2-ol, propan-1-ol:propan-2-ol and carbon tetrachloride: dimethylformamide. Results showed a deviation of solvation data from ideality over the majority of composition ranges in all the solvent mixtures. The type and contribution of specific and non-specific solute-solvent interactions were analyzed in the framework of the linear solvation energy relationships. Statistical analysis of single, dual, and multiparametric equations revealed that in pure solvents, spectral behaviours of MB and SDB were affected by the polarity and basicity of the solvent milieu respectively. However in aqueous alcohols, polarity of the solvent milieu was the most significant determinant of spectral patterns with α and β parameters playing secondary contributory roles in the spectral changes of MB and SDB, respectively. Multiparametric equations generally yielded the best fitted model in mixed alcohol systems with polarity remaining the largest contributor, followed by β and α of the solvent milieu in that order. Spectral-structure relationships identified ion-dipole interactions involving the charged sulphonate and hydrazone moieties as well as protondonor-acceptor interactions of the common labile hydroxyl groups as mechanisms for the observed solvation data. 1 results 1
- Learning outcomes 1 results 1
- Linear solvation energy 1 results 1
- Mahin. 1 results 1
- Mathematics achievement and quantitative ability 1 results 1
- Microbial degradation 1 results 1
- Mixed solvent systems 1 results 1
- Mordant black 1 results 1
- Negation 1 results 1
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