1684 Chapters
Medium 9781902375212

Interactive management information systems

Tony Baxendale Chartridge Books Oxford ePub

CHAPTER 1

Management of
Information
Systems

Introduction

The general principles of recording data flow within a construction organisation are considered in order to specify an integrated management information system Recommendations for the initiation of a management information system are also made together with a range of possible objectives. Structured systems development is suggested to build a logical model that shows the interrelationship of data processing. The need for an interactive system is developed together with the requirement of a structured approach based on a selection of objectives. Finally a system for main contractor control and for directly employed resource control is proposed.

Data Flow

Data flow analysis is a well established methodology and has been used for management information flow in construction organisations. Other exponents of the data flow concept have modelled the regional office and site based information systems of a large contractor and an operational integrated data management system for a house building organisation.

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Medium 9781780644370

15 RNA Interference Strategy for Crop Protection Against Insect Pests

Soberon, M.; Gao, Y.; Bravo, A. CABI PDF

15

RNA Interference Strategy for

Crop Protection Against Insect

Pests

Sneha Yogindran and Manchikatla V. Rajam*

Department of Genetics, University of Delhi South Campus,

New Delhi, India

Summary

RNA interference (RNAi) has significantly accelerated functional genomic research on insects. Since its discovery, numerous reports have reported efforts to apply RNAi approaches to insect species lacking characterized genomes. The technique also has substantial potential for use in the control of insect pests that cause severe loss of crop yield and quality. Several approaches have been exploited to control these pests, including the application of different agrochemicals and the development of resistant crops by breeding and transgenic approaches.

However, there are certain limitations with these strategies, and therefore novel alternative strategies are required for the development of stress-tolerant plants. RNAi strategies have proven to be such a novel and potential alternative for disease and pest control. This technique essentially involves the production of hairpin double-stranded

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Medium 9781683922018

Late Papers- Software Engineering Research

Edited by Hamid R. Arabnia, Leonidas Deligiannidis, Fernando G. Tinetti CSREA Press PDF

Int'l Conf. Software Eng. Research and Practice | SERP'17 |

SESSION

LATE PAPERS - SOFTWARE ENGINEERING

RESEARCH

Chair(s)

TBA

ISBN: 1-60132-468-5, CSREA Press ©

171

172

Int'l Conf. Software Eng. Research and Practice | SERP'17 |

ISBN: 1-60132-468-5, CSREA Press ©

Int'l Conf. Software Eng. Research and Practice | SERP'17 |

173

Object Orientation: A Mathematical Perspective

Nelson Rushton

Texas Tech University, Lubbock, Texas, USA

Abstract This paper examines language features usually associated with object orientation (OO) from the standpoint of mathematical practice and mathematical logic. Section 1 points out the occurrence of polymorphism and inheritance in mathematical theories commonly discussed as early as elementary school. Section 2 explains and illustrates the dichotomy between OO languages and common sense mathematics on one hand, and non-OO languages (such as C) and research-level mathematics on the other. This is related to the parallel dichotomy of nonmonotonic and monotonic logic used to reason about the respective kinds of systems.

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Medium 9781845938291

16. Planococcus minor (Hemiptera: Pseudococcidae): Bioecology, Survey and Mitigation Strategies

Pena, J.E., Editor CAB International PDF

16 

Planococcus minor

(Hemiptera: Pseudococcidae):

Bioecology, Survey and Mitigation

Strategies

1

Amy Roda,1 Antonio Francis,2 Moses T.K. Kairo2 and Mark Culik3

USDA-APHIS-PPQ, Center for Plant Health Science and Technology, Miami,

Florida 33158, USA; 2Center for Biological Control, College of Engineering

Sciences, Technology and Agriculture, Florida Agricultural and Mechanical

University, Tallahassee, Florida, USA; 3Instituto Capixaba de Pesquisa,

Assistência Técnica e Extensão Rural – INCAPER, Vitória,

Espírito Santo, Brazil

16.1  Introduction: Host Range,

Economic Impact and Pest Status

Planococcus minor (Hemiptera: Pseudococcidae) is commonly referred to as the passionvine mealybug, pacific mealybug or guava mealybug. P. minor is one of 35 species belonging to a genus that is native to the Old World (Cox, 1989), which includes many well-known pests of economic importance

(Williams and Watson, 1988; Cox, 1989). As a phloem feeder, P. minor can cause stunting and defoliation that eventually leads to reduced yield and fruit quality. The pest also causes indirect or secondary damage due to the sooty mold growth on honeydew produced by the mealybug. P. minor is also likely to transmit plant viruses such as

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Medium 9781780643304

9 Good Intentions vs Good Ideas: Evaluating Bioenergy Projects that Utilize Invasive Plant Feedstocks

Quinn, L.D., Editor CAB International PDF

9

Good Intentions vs Good Ideas:

Evaluating Bioenergy Projects that

Utilize Invasive Plant Feedstocks

Lloyd L. Nackley*

University of Cape Town and South Africa National Biodiversity

Institute, Cape Town, South Africa

Abstract

This chapter evaluates the sustainability of using naturalized or cultivated invasive plant species as feedstocks for bioenergy, including electrical power, liquid biofuels, and chemical substitutes. The evaluations apply a sustainability framework that recognizes economic and social development, as well as environmental protection. The necessity of using a sustainability framework is illustrated by revealing how historical bioenergy developments, which did not consider multiple aspects of sustainability (e.g., only economics), fell short of providing socially acceptable and environmentally neutral/ beneficial bioenergy. There are two divergent issues regarding the use of invasive plants in bioenergy: (i) dedicated energy feedstocks that may foster biological invasions; and (ii) harvesting existing invasive plant biomass for bioenergy conversion. Fertile dedicated feedstocks are shown to be a less sustainable option than sterile species with no history of invasion. No species with a history of invasion should be used as a dedicated energy feedstock. Harvesting existing invasive populations is shown to be economically unsustainable if the bioenergy conversion process is dependent on the invasive plant population. When invasive plant populations represent a small portion of the overall energy supply (<10%) there are possible synergies available for thermal energy conversion processes (e.g., bioelectricity, or syngas production), but not for liquid biofuels, which currently cannot tolerate a heterogeneous feedstock mix. Lastly, invasive plant-based biochar is deemed the most suitable option, because it meets all sustainability criteria.

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