Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 98 for “"long-term effect"”.
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Long-term effect of crop rotation and tillage on soil properties
Shifts in cropping systems from long-term rotations including forages to mostly annual crops has intensified tillage, and led to the development of conservation tillage practices such as no-till. There is a shortage of information about the interactive effects of rotation and tillage on soil …
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The long-term effect of elevated CO₂ on grassland biomass production
… situated on the Bongwan gas fault in Natal. The effect of elevated CO₂ on monocotyledenous (C₄) and dicotyledenous (C₃) above ground plant biomass production and their dominance patterns along a CO₂ gradient were studied. Three 7x7m plots were located 18m, 39m and 73m away from the elevated CO₂ …
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THE SHORT- AND LONG- TERM EFFECT OF ZINC AND COPPER CONTAMINATION ON SOIL MICROBIAL FUNCTIONS
… by trace metal contamination in the short term but are restored over time. However, the long-term effect of trace metals on soil microbial functions is poorly understood. Much of the available data on adaptation is derived from studies focused on agricultural soils in Europe. This study …
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The Long Term Effect of Time-Memory on Forager Honey Bee (<em>Apis mellifera</em>) Recruitment.
<p>Experiments were performed to determine the influence of the honey bee time-memory on a forager bee's sensitivity to recruitment. Two groups of foragers from one colony were trained to separate food stations at the same restricted time of day for several consecutive days. Feeding then was …
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Long-term effect of respiratory syncytial virus (RSV) infection on children: a prospective longitudinal birth cohort study in Bangladesh
… Nevertheless, few studies have assessed the long-term impact of RSV infection in developing healthcare settings, and none of the previous studies focussed on neonates. This PhD thesis aimed to evaluate the long-term effects of RSV infection within 0-59 days of life in a resource-poor setting. …
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Is Firm Value Affected by Being Recognized as a Top 50 Company in Diversity, Equity, and Inclusion?
… to 2001-2024 (24 years). It also expands the long-term effect studies by Filbeck et al. (2017) and Foster et al. (2021) of being recognized as a DiversityInc Top 50 Company for Diversity. The results of the Fama-French 3, 4, and 5 models find a negative long-term effect on firm value starting …
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The employment consequences of secondary occupational and academic courses for minorities and females
The purpose of this study was to determine the long-term effect of participation in secondary vocational education and Co-operative Education for non-college attending high school graduates in general, and selected ethnic minorities and females specifically. Minority individuals represented in the …
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Reflective intervention: An alternative staff development model
… is provided by school districts. Some short term programs have had little long term effect on improving learning in teachers' classrooms. State and federal governments are funding school reform movements to create model schools that increase student learning and achievement. Though many of …
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Functional relationship between forebrain cholinergic projections and somatostatin neurons in the rat
… the septum or the substantia innominata, and the long-term effect of the resulting acute hyperactivity of the cholinergic neurons on somatostatin neurons was measured as somatostatin-like immunoreactivity in the hippocampus and cortex. Glutamic acid decarboxylase activity, a marker for gamma-amino …
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The Brooks Act, is it relevant today?
This paper analyzes the long term effect of Congressional legislation and how it affects the acquisition process. Understanding the basics behind the Brooks Act and how the environment surrounding information technology (IT) acquisitions has changed, is necessary to make an evaluation of how this …
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Long-term Effects of Fertilization on Phosphorus Biogeochemical Pools in Forest Soils
… of Pinus radiata in New Zealand has also shown long-term effects on labile P pools in the soil which improved stand growth during the subsequent rotations (Ballard, 1978; Gentle et al., 1986). Identifying and quantifying the biologically available P pools in the soil environment will help …
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THE IMPACT OF INTERNAL REVENUE CODE SECTION 162(M) ON PAY FOR PERFORMANCE: A REEXAMINATION
I examine the effects of Internal Revenue Code Section 162(m), which caps a public company's corporate income tax deduction at $ 1 million per year for amounts paid to each of its top five executives, on CEO compensation level, CEO compensation structure and pay for performance sensitivity. I find …
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Marijuana Use by Juveniles: The Effects of Peers, Parents Race, & Drug Abuse Resistance Education.
… such as the D.A.R.E. program would have little long-term effect on marijuana usage by juveniles.</p>
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Economic impact of Ebola virus disease in Western African countries.
… lives of 11325 people. It is the worst and the longest Ebola outbreak since the first recorded Ebola outbreak in 1976. The World bank estimated the cost of this outbreak is approximately $4 billion. In this thesis, I estimate the impact of the spread of ebola on economic activity in Western …
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Relevance and Role of Nutritional Supplements in the Ophthalmology Practice // Място и роля на хранителните добавки в офталмологичната практика
… Mielooptik and Citizin, and to analyse the effect of their application as additional therapy in patients with POAG. The results suggest that the intake of the food supplements Mielooptik and Citizin (Citicoline), as an adjunctive antiglaucoma therapy, has a positive effect on the progression …
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The Effect of School Starting Age, Parent Education, and Gender on High School Academic Achievement and Extracurricular Participation
The problem. Is there a long-term effect of starting age on academic achievement, participation in athletics, student government and organizations, and fine arts, and the continuation of post-secondary education? Procedure. The graduates of a small rural high school over a five-year period made up …
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Evaluation of the effect of rail intra-urban transit stations on neighborhood change
… station areas. However, the literature on the effects of rail intra-urban transit stations on neighborhoods is relatively thin, particularly on the socioeconomic effects. This quasi-experimental study evaluated the effect of heavy rail intra-urban transit stations on surrounding neighborhoods, …
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The Recent Evolution of American Naval Power
… to the current international environment, one long-term effect has been a degradation of the Navy's ability to maintain American supremacy in the open ocean, which could have a profound detrimental effect upon future American security.
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The English boys boarding preparatory school, 1914-1940
This thesis is a detailed study of a long-standing English institution. The preparatory school is an integral component of the education system of Britain's wealthier classes and has influenced the lives of many of this country's greatest men. The popular conception of the inter-war prep school is …
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