Factors that influence traditional-age college students to re-enroll in their third year at a research extensive university in the southern region of the United States

Student retention is of policy significance to higher education systems. In the United States, student retention is a major problem in higher education affecting students, universities, and society. Most of the research on student retention has focused on first-year students. Little is known about the retention of college students after their first year. The primary purpose of this study was to determine the influence of selected demographic and academic characteristics on the decision of traditional-age, undergraduate students to re-enroll at a research-extensive university. The population was defined as all traditional-age undergraduate students who entered the selected university during the fall 2005 semester. A total of 16 independent variables were collected from admissions and student aid databases and transferred to a computerized, recording form that served as the research instrument. Using stepwise multiple discriminant analysis, the researcher identified a significant model that increased the researcher’s ability to accurately explain the retention status of traditional-age, undergraduate students. The model correctly classified 86.7% of the cases, which was a 39.3% improvement over chance. The researcher recommended further studies to increase the percentage of correctly classified cases by integrating these variables with others to further explain retention status. Variables suggested were: a more detailed examination of the students’ financial aid portfolio; students’ GPA during their second and subsequent semesters of enrollment; students’ involvement in other student activities and organizations; and survey and/or focus group data regarding the perceptions of enrollment management personnel. The researcher further found that many non-retained students entered the study institution with very good high school academic records, contrary to previous studies. The researcher recommended further study to determine why students with strong academic credentials leave college before their third year. The researcher suggested the use of exit interviews of students leaving the university. The researcher also found that a small portion of the retained students received one of the university’s five major academic scholarships. There is strong evidence to suggest that scholarships have a significant influence on student retention. The researcher recommended that the study institution seek more funding to increase the number of scholarships to award to incoming students

The Influence of Social Capital on Natural Resource Management in Marginal Areas of Kenya

This paper analyzes the influence of social capital on the farmers' perception of the soil erosion problem and the level of investments in soil conservation in marginal areas of Kenya. It uses data from a survey of 321 households in Machakos and Taita-Taveta Districts. A Heckman's two-step model is applied to assess the influence of social capital on investments in soil conservation by farmers. Results show that the education level of the household head, slope of farmers' fields, proportion of off-farm income, and the status of soil erosion are significant determinants of the likelihood of farmers recognizing soil erosion as an important problem. Household size, slope, land tenure security, membership diversity, age of household head, farm size per capita and membership in groups influence investments in soil control measures such as terraces. The effects, however, are location-specific. The policy challenge is to establish and strengthen social capital elements that have a strong influence on communities undertaking soil conservation measures to promote sustainable agriculture, and improve land tenure security.Resource /Energy Economics and Policy,

Social Capital and Soil Erosion Control in Agriculturally Marginal Areas of Kenya: The Case of Machakos and Taita-Taveta Districts

This paper evaluates the farmers perception of the soil erosion problem, and identifies and analyses social capital elements that motivate households to actively participate in soil conservation in agricultural production process. The data used in the study was generated using a structured questionnaire in a survey that covered 321 households in Kenyas semi arid districts of Machakos and Taita-Taveta Districts. Two modelling strategies were used: A Probit model was used to estimate the likelihoods of factors that may influence farmers perception of soil erosion problem, and a Tobit to estimate parameters of factors that influence terracing intensity. The results indicate that although perception of the soil erosion problem is relatively high in the study sites, its effect on soil conservation investments is not significant. In Machakos, the significant determinants of terracing intensity include land tenure, crop area, household size, and membership diversity whereas in Taita-Taveta they include age of household head and consumer-worker ratio. Results from the aggregated data show that lagged crop output, group membership density and diversity, cognitive social capital and location significantly influence the terracing intensity on farm household fields. The policy challenge is to establish and strengthen social capital elements that have a strong influence on communities undertaking soil erosion control measures for sustainable agriculture and rural development.Social capital, Marginal areas, Soil erosion, Perception, Two-step estimation, Kenya, Research and Development/Tech Change/Emerging Technologies, C24, D23, Q15, Z13,

Recycling Hybrid Maize Varieties: Is It Backward Practice or Innovative Response to Adverse Conditions in Kenya?

Hybrid varieties have significantly contributed to increased maize proclivity in Kenya and other SSA countries. A number of factors limit access of farmers to maize varieties, smallholder farmers have sort an alternative option of recycling the hybrid maize seeds. Seeds are carefully selected based on cob and grain size during or before harvest after which they are preserved. hybrid yielding maize varieties (HYMV) developers and disseminators observe that there is a progressive yield decrease of recycling HYMV. The question is Is it economical to recycle HYMV or an innovation that farmers can practice?. This study was designed to evaluate the yield losses and benefits of hybrid maize recycling in Kenya. Through key informants, farmers who grew both certified seed and recycled maize were identified. For on farm trial (OFT), sixty two (62) farmers who recycled hybrid maize varieties and 30 who grew certified seeds were randomly selected while for the On station trial (OST), the trial was laid out in a completely randomized block design replicated four time with plots measuring 100M square. For the OFT, two plots of 100 square meters were superimposed on farmers fields both on recycled and fresh seed. Input and output levels in the plots were identified and valued. The results showed that the yield decreases at an increasing rate. Yield losses for Double crosses low compared to the Top crosses. The yield levels of recycled Top cross reduced by 16%, 17% and 32 while that for double crosses decreased by 20%, 37% and 46% for the first, second and third recycling generations respectively. However, positive net benefits are attained in recycling HYMV. This implies that it is beneficial to recycle HYMV up-to the third generation level. However at regional and national level food security objectives is comprised. This demands that incentives to discourage farmers from recycling may be sought through development of OPVs which can be recycled if national objective of food security has to be enhanced. From the logit results the major significantly influencing factors in recycling HYMVs are amount of credit, fertilizer, wealth and extension contact.Crop Production/Industries,

Economics of Insecticide use and Potential for Bt Maize Varieties in the Control of Stalkborer in Kenya.

Maize is the staple food crop and source of income for majority of the Kenyan population and many sub-Saharan African countries. The increasing Kenyan population demands an increase in maize production if intermittent food deficits have to be averted. Since the introduction of improved maize varieties in mid-1960, the start of Green Revolution period, maize yields increased drastically up to 1970s and started declining from 1980s to-date. The key contributory factors are nutrient mining, sub-optimal input use and insect pest damage. Of the insect pests, stalk borer is of economic importance. Currently, KARI and CIMMYT are developing maize varieties that are tolerant to stalk borer damage. In order to evaluate the potential impact of these interventions economics of stalk borer control at farm level was evaluated. Surveys complemented with on-farm trials were executed in six major maize growing zones of Kenya. Farmers were randomly selected and a sample-frame established after which a total of 1854 households were randomly selected using random sampling technique. Each household was interviewed using structured questionnaire. Data on method of stalk borer control and the type insecticides used was collected. Partial budget and economic surplus models were used. The results indicated that very few farmers control stalk borer in maize despite significant stalk borer losses of about 15%. Therefore if Bt maize is introduced in Kenya it is likely to reduce these losses. This will benefit many hungry and poor Kenyans with improved household food supply and on farm incomes, in line with Government policy of food security and poverty eradication.Crop Production/Industries,

Economic Valuation of Grazing Management Practices: Discrete Choice Modeling in Pastoral Systems of Kenya

This study estimates the economic contribution of grazing management practices in pastoral systems by specifically undertaking an economic analysis of pastoralists’ preferences for grazing management practices and the economic value pastoralists place on them. The study applied the discrete choice experiment technique using a D-optimal design, a multi-attribute preference elicitation method to evaluate the economic value of grazing management options practiced in pastoral areas of Kenya. The results show that pastoral communities derive positive utility in connected systems that enable reciprocal access to resources in both wet and dry seasons. Pastoralism adapts to spatial–temporal variability of pasture and water through herd mobility; hence the positive utility derived from practices that contribute to the availability of adequate water and pasture across the seasons. These findings provide empirical evidence on the social and economic net benefits of rangeland management practices that should be enhanced to promote sustainable management of rangeland resources

The Influence of Social Capital on Natural Resource Management in Marginal Areas of Kenya

This paper analyzes the influence of social capital on the farmers' perception of the soil erosion problem and the level of investments in soil conservation in marginal areas of Kenya. It uses data from a survey of 321 households in Machakos and Taita-Taveta Districts. A Heckman's two-step model is applied to assess the influence of social capital on investments in soil conservation by farmers. Results show that the education level of the household head, slope of farmers' fields, proportion of off-farm income, and the status of soil erosion are significant determinants of the likelihood of farmers recognizing soil erosion as an important problem. Household size, slope, land tenure security, membership diversity, age of household head, farm size per capita and membership in groups influence investments in soil control measures such as terraces. The effects, however, are location-specific. The policy challenge is to establish and strengthen social capital elements that have a strong influence on communities undertaking soil conservation measures to promote sustainable agriculture, and improve land tenure security

Recycling Hybrid Maize Varieties: Is It Backward Practice or Innovative Response to Adverse Conditions in Kenya?

Hybrid varieties have significantly contributed to increased maize proclivity in Kenya and other SSA countries. A number of factors limit access of farmers to maize varieties, smallholder farmers have sort an alternative option of recycling the hybrid maize seeds. Seeds are carefully selected based on cob and grain size during or before harvest after which they are preserved. hybrid yielding maize varieties (HYMV) developers and disseminators observe that there is a progressive yield decrease of recycling HYMV. The question is "Is it economical to recycle HYMV or an innovation that farmers can practice?". This study was designed to evaluate the yield losses and benefits of hybrid maize recycling in Kenya. Through key informants, farmers who grew both certified seed and recycled maize were identified. For on farm trial (OFT), sixty two (62) farmers who recycled hybrid maize varieties and 30 who grew certified seeds were randomly selected while for the On station trial (OST), the trial was laid out in a completely randomized block design replicated four time with plots measuring 100M square. For the OFT, two plots of 100 square meters were superimposed on farmers' fields both on recycled and fresh seed. Input and output levels in the plots were identified and valued. The results showed that the yield decreases at an increasing rate. Yield losses for Double crosses low compared to the Top crosses. The yield levels of recycled Top cross reduced by 16%, 17% and 32 while that for double crosses decreased by 20%, 37% and 46% for the first, second and third recycling generations respectively. However, positive net benefits are attained in recycling HYMV. This implies that it is beneficial to recycle HYMV up-to the third generation level. However at regional and national level food security objectives is comprised. This demands that incentives to discourage farmers from recycling may be sought through development of OPVs which can be recycled if national objective of food security has to be enhanced. From the logit results the major significantly influencing factors in recycling HYMVs are amount of credit, fertilizer, wealth and extension contact

I neurinomi del duodeno e dell'intestino tenue: un caso di neurinoma dell’angolo duodeno-digiunale.

The Autbors, for a rare duodenojeiunal scbuiannoma of the B type according to Antoni classification, diagnosed during sigmoid colon resection for degenerated adenomatous polyp, suggest a review of literature about (209 cases) and discass clinical, diagnostic and therapeutic features, also considering possible malignant degeneration of these neoplasms as well as tbeir frequent association with digestive hemorrhages