OALib Journal期刊

ISSN: 2333-9721




2018 ( 6 )

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2016 ( 86 )

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匹配条件: “Robert Muzira” ,找到相关结果约27298条。
Yield Performance of Improved Chickpea (Cicer arietinum) Varieties under Pure Stand and Banana Intercrop Methods in Semi-Arid Agroecological Zone of South Western Uganda  [PDF]
Robert Muzira, Peace Kankwatsa, Steven Byenkya
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104089
Chickpea (Cicer arietinum) is increasingly becoming an important crop in East Africa due to its desirable attributes such as high drought tolerance, nitrogen fixation, grain/seed productivity, and market potential. Chickpea is a major source of high quality protein for human diets and has potential of bridging the nutritional gap among rural households during drought periods. With the aim of improving household income in South Western Uganda, National Agricultural Advisory Services introduced several chickpea varieties between 2004 and 2007 in the zone targeting a local agro-producer processor.  However, due to the limited capacity of the processor to buy all chickpea produce, most farmers abandoned the crop since there was no other alternative use or markets known. Apart from lack of market, chickpea has the potential to improve nutrition among the vulnerable rural households if its production and consumption are enhanced. Due to chickpea ability to improve soil fertility, and survive under low moisture conditions where other common crops cannot survive, it can also be a source of food especially in period when there is food scarcity. Although, Chickpea had great potential of being adopted in the region, its agronomic performance (grain yields) and adaptability to the existing cropping systems in the semi-arid zone of South Western Uganda is not known. Therefore, this research was conducted to ascertain the potential yields and appropriate cropping method, which will result into higher productivity. Farmer participatory research was conducted to assess grain yields of five improved chickpea varieties (ICCV 96329, ICCV 00305, ICCV 97105, ICCV 92318 and ICCV 00108) using banana-intercrop and pure stand cropping methods. Eighty nine farmers hosted the experiment on behalf of the community. Results indicated that there was no significant difference (p > 0.05) in grain yields among the chickpea varieties. However, grain yields from chickpea planted as pure stand were significantly higher (p < 0.05) than that obtained from banana-intercrop. This implies that competition with banana for moisture, nutrient and light significantly suppressed the yielding potential of chickpea in the banana intercrop.
Assessment of Soil Nutrients Limiting Sustainable Potato Production in the Highlands of South-Western Uganda  [PDF]
Robert Muzira, Twaha Basamba, John Steven Tenywa
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104440
Soil fertility management is one of the major strategies for improving potato productivity in the highlands of south-western Uganda. Land belonging to potato farmers is highly fragmented hindering sustainable potato production under small-holder farming systems. Land fragmentation brings a major challenge to small-scale farmers in soil fertility management, increasing costs of production. However, identifying major soil nutrients limiting potato production in the highlands of south-western Uganda is an avenue of applying appropriate soil nutrients to improve potato productivity without degrading the soils. It also assists farmers in investing in the necessary soil nutrients and, hence reducing the costs of production while improving potato productivity. The study indicated that soil potassium was the most single significant soil nutrient limiting potato productivity especially in the fields located on hilltops and far from homesteads. Hence, it was imperative that farmers apply potassium containing fertilizers to minimize potassium depletion but also increase potato productivity. It was also important for farmers to always integrate disease management with soil nutrient management for improved potato productivity.
Introduction to a Requirements Engineering Framework for Aeronautics  [PDF]
Robert Abo
Journal of Software Engineering and Applications (JSEA) , 2010, DOI: 10.4236/jsea.2010.39105
Abstract: This paper introduces a framework to produce and to manage quality requirements of embedded aeronautical systems, called the ‘Requirements Engineering Framework’ (REF). It aims at making the management of the requirement lifecycle easier, from the specification of the purchaser’s needs, to their implementation in the final products, and also their verification, while controlling costs. REF is based on the main standards of aeronautics, in particular RTCA DO-254, and RTCA DO-178B standards. An implementation of REF, using the IBM Rational DOORS and IBM Rational Change tools, is also presented in this paper.
Pricing Options in Jump Diffusion Models Using Mellin Transforms  [PDF]
Robert Frontczak
Journal of Mathematical Finance (JMF) , 2013, DOI: 10.4236/jmf.2013.33037

This paper is concerned with the valuation of options in jump diffusion models. The partial integro-differential equation (PIDE) inherent in the pricing problem is solved by using the Mellin integral transform. The solution is a single integral expression independent of the distribution of the jump size. We also derive analytical expressions for the Greeks. The results are implemented and compared to other approaches.

Australia’s Out-Dated Concern over Fishing Threatens Wise Marine Conservation and Ecologically Sustainable Seafood Supply  [PDF]
Robert Kearney
Open Journal of Marine Science (OJMS) , 2013, DOI: 10.4236/ojms.2013.32006

Seafood plays an important role in human nutrition and its increased consumption is actively recommended for sustenance and health benefits in both developing and developed countries. In parallel to this, the public receives confusing advice as to what seafood is sustainably produced and is frequently misled about the environmental impacts of fishing, especially in locations such as Australia where contemporary fishery management has a conservation and sustainability focus. It is recognised globally that Australia’s traditional fishery management driven by strict sustainability and biodiversity regulations, has achieved impressive results in managing both fish stocks and the effects of fishing on marine environments. Despite this, continued pressure from non-government organisations (NGOs) and a perpetuation of the misuse of management terms such as overfished is used to promote the misguided need for ever increasing fishing restrictions, most obviously in protected areas. This paper questions the motives of some NGOs and governments in Australia in pursuing additional restrictions on fishing which are mostly unnecessary and disproportionate to the sustainability requirements of other sources of food. This is done within the context of the global need for sustainable seafood supply and the need for effective marine conservation that addresses all threats to marine ecosystems in proportion to the magnitude of each threat.

Wearable and wireless accelerometer systems for monitoring Parkinson’s disease patients—A perspective review  [PDF]
Robert LeMoyne
Advances in Parkinson's Disease (APD) , 2013, DOI: 10.4236/apd.2013.24021
Abstract: Parkinson’s disease is a growing medical concern as societies, such as the United States of America, become progressively aged. Therapy strategies exist for the amelioration of Parkinson’s disease symptoms, and the quantification of attributes, such as hand tremor, can provide valuable feedback. Wearable and wireless accelerometer systems for monitoring Parkinson’s disease patients have been progressively advanced over the course of the past half-decade. In particular, wireless accelerometer nodes and smartphones, such as the iPhone, hold promise for optimizing therapy strategy by providing convenient quantified feedback. This perspective review addresses the current advances in wearable and wireless accelerometer systems for monitoring Parkinson’s disease patients and forecasts for the near future.
A Study of Lateralized Cognitive Processes in Upper-Division Electrical Engineering Students’: Correlating Written Language Functions with Analytical Reasoning in Microelectronics  [PDF]
Robert Melendy
World Journal of Engineering and Technology (WJET) , 2014, DOI: 10.4236/wjet.2014.22008
Abstract: The human brain is asymmetrical in function, with each of its two hemispheres being somewhat responsible for distinct cognitive and motor tasks, to include writing. It stands to reason that engineering students who have established entrance into their upper-division programs will have demonstrated cognitive proficiency in math and logical operations, abstract and analytical reasoning and language usage, to include writing. In this study the question was asked: is there a correlation between an upper-division electrical engineering students’ analytical reasoning ability and their descriptive writing ability? Descriptive writing is taken here to mean a students’ ability to identify key physical aspects of a mathematical model and to express—in words—a concise and well-balanced description that demonstrates a deep conceptual understanding of the model. This includes more than a description of the variables or the particular application to an engineering problem; it includes a demonstrated recognition of the basic physics that govern the model, certain limitations (idealizations) inherent in the model, and an understanding of how to make practical experimental measurements to verify the governing physics in the model. A student at this level may demonstrate proficiency in their analytical reasoning skills and hence be capable of correctly solving a given problem. However, this does not guarantee that the same student is skilled in associating equations with their physical meaning on a deep conceptual level or in understanding physical limitations of the equation. Consequently, such a student may demonstrate difficulty in mapping their comprehension of the model into written language that demonstrates a sound conceptual understanding of the governing physics. The findings represent a sample of two independent class sections of Electrical and Computer Engineering junior’s first course in Microe-lectronic Devices and Circuits during fall semesters 2012 and 2013 at a private mid-size university in NW Oregon. A total of three exams were administered to each of the 2012/2013 groups. Correlations between exam scores that students achieved on their descriptive writing of microelectronics phenomena and their analytical problem-solving abilities were examined and found to be quite significant.
Foilized pouches can prevent the transmission of HIV from mother to child using multi-drug therapies  [PDF]
Robert Malkin
Journal of Biomedical Science and Engineering (JBiSE) , 2014, DOI: 10.4236/jbise.2014.71007
Abstract: Children can become HIV positive (HIV+) from their mother during home birth. If the infant ingests antiretroviral (ARV), medications immediately after birth, the risk of transmission can be dramatically reduced. We have previously proposed the use of foilized, polyethylene-lined pouches to store ARV’s. Using the pouch, the mother receives the medication at an antenatal care visit, months before delivery, and if she delivers at home, tears open the pouch and drips the medication into her child’s mouth. In this work, we extend the use of the pouch to store a modern ARV, Lamivudine (3TC), often used in multi-drug regimens. Under laboratory conditions, pouches were filled with 3TC and stored at 25?C/60% relative humidity (RH) for twelve months. We found that the 3TC was stable throughout the year (maximum 5.6% of labeled concentration change). The preservatives were somewhat degraded by the act of repackaging the medicine, but sufficient preservatives remained to maintain the medication. The same impurities were identified in the 3TC stored in the pouches and the samples removed from the bottles indicating that the pouches do not introduce new impurities (impurities that are not already introduced by the bottle). We conclude that the pouch can preserve this modern ARV for up to twelve months.
Valuation of Mineral Resources in Selected Financial and Accounting Systems  [PDF]
Robert Uberman
Natural Resources (NR) , 2014, DOI: 10.4236/nr.2014.59045
The paper presents reviews of fundamental issues regarding valuation methodologies of mineral deposits: 1) recommended by mineral industry standards; 2) used for disclosures in financial statements and 3) adopted in national statistics. A discussion of historical developments of various regulations is supplemented by characteristics of key valuation methods. Differences and similarities are analysed and compared to current practices. A special attention is given to certain distinctive issues which are not shared by most of other types of assets like inclusion of decommissioning and rehabilitation costs or consequences of long duration of investment phase.
Hernia Societies—A Blessing or a Curse? Who Is Running Them? Ethical Surgeons or the Industry  [PDF]
Robert Bendavid
International Journal of Clinical Medicine (IJCM) , 2014, DOI: 10.4236/ijcm.2014.513103

The intended purpose of hernia societies is being lost. Originally, they were meant to be a venue for the dissemination of basic science, knowledge and sharing of acquired research, experiences by surgeons with the ultimate aim of improving a patient’s lot. Instead, they have become venues and brokerage houses where the plastics industry may advertise and sell products which have barely been tested or about which the truth was never entirely revealed. An FDA approval, sadly, is not assurance that all is well. We are discovering these facts through the courts and the lay press. We, as surgeons, are not told the whole truth to impart to patients who expect nothing less! Have any of us been complicit, knowingly or not?



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