Algorithms for Operational Planning of Agricultural Field Operations

The report describes the current project activities on the development of optimization methods for planning agricultural field operations and on the estimation of the potential benefits for farmers by comparing optimized plans with conventional ones. The complete activities include:1) The GNSS-based monitoring and recording of 5 large scale harvestingoperations executed by fleets of agricultural machinery (E.g. Maize harvesting executed by 1 forage harvester and 5 transport carts and grain harvesting executed by 3 combines and 3 transport carts).2) The development of a method for the automatic extraction of performance statistics from GNSS recordings of multiple-machinery operations. Classification algorithms have been created able to automatically classify the task time elements based on the recordingsfrom GNSS loggers.3) The development of a path planning method for transport units supporting harvesting operations. The approach incorporated i) the optimization criterions of time or travelled distance; ii) the generationof paths for both in-field and between fields movements of the transport units; and iii) the adoption of restricted movements as imposed by the controlled traffic farming concept

Toward Efficient Urban Form in China

Land efficiency in urban China is examined, using Tianjin as a case study, from the perspective of agricultural land conservation; reduction in energy use, conventional pollution, and greenhouse gas emissions; and human time savings. Issues addressed include increased scatter on the periphery, over-consumption of industrial land, over fiscal dependence on land sales, and loss of valuable agricultural and environmental services land. Policy implications discussed include the need for greater variation in urban densities (leveraging already high densities in urban China – one-third the global median), less broad-brush agricultural land conservation policies, higher floor area ratios near rapid transit stations, etc.China, land conversion, land efficiency, land use policy, urban density

Peripheral Regions in Duress: Counter-Social Capital Impediments of Local Development in Rural Greek Areas

Unlike most enthusiastic narratives of various success stories in recent North European regional economic development led by innovation, localized learning, social capital and institutional embeddedness, this paper deals with a set of major stresses and problems of local economic development in peripheral, less favoured, regions. By drawing upon concrete research experience of regional development projects we try to shed light upon the processes of spatio-economic change and the management of local production in connection with prevailing cultural attitudes/values in less developed Greek rural areas. attidudes/values constituting a kind of localized “counter-social capital†deposit that impedes any likely innovative local development initiatives. The paper argues that the major problems facing these areas are not only or solely associated with the effects of market economy restructuring and the operation of macroeconomic and macropolitical forces at the regional and local level, but, also with inadequate management of human skills, lack of productive mentality and negative cultural values and attitudes. The policy relevance of our analysis calls for the elaboration of alternative development strategies aimed rather at enchancing local social capital potentialities than at improving hard infrastructures and providing financial incentives to local firms.

Sri Lanka Social Enterprise Needs Assessment and Advisory

Authored in collaboration with Oxfam, this research maps social enterprises within the agriculture sector, identifies the key challenges they face, and makes recommendations for donors and development agencies looking to support the space in Sri Lanka. Findings and recommendations developed based on secondary research and field survey of social enterprises in Sri Lanka

The agricultural policy simulator (AgriPoliS): an agent-based model to study structural change in agriculture (Version 1.0)

A central criticism common to agricultural economic modelling approaches for policy analysis is that they do not adequately take account of a number of characteristic factors of the agricultural sector. This concerns aspects like the immobility of land, heterogeneity of farms, interactions between farms, space, dynamic adjustment processes as well as dynamics of structural change. In brief, modelling the complexity of the system has not been at the centre of interest. In terms of modelling complex economic systems, an agent-based modelling approach is a suitable approach to quantitatively model and understand such systems in a more natural way. In the same way, this applies to the modelling of agricultural structures. In particular, agent-based models of agricultural structures allow for carrying out computer experiments to support a better understanding of the complexity of agricultural systems, structural change, and endogenous adjustment reactions in response to a policy change. This paper presents the agent-based model AgriPoliS (Agricultural Policy Simulator) which simultaneously considers a large number of individually acting farms, product markets, investment activity, as well as the land market, and a simple spatial representation. The ultimate objective of AgriPoliS is to study the interrelationship of rents, technical change, product prices, investments, production and policies, structural effects resulting from these, the analysis of the winners and losers of agricultural policy as well as the costs and efficiency of various policy measures. -- G E R M A N V E R S I O N: Ein oft genannter Kritikpunkt an vielen agrarökonomischen Politikanalysemodellen ist, dass diese nur ungenügend Bezug nehmen auf Aspekte wie die Immobilität von Boden, Heterogenität der Akteure, Interaktionen zwischen Betrieben, räumliche Bezüge, dynamische Anpassungsprozesse und Strukturwandel. Kurz, die Modellierung komplexer Wirkungszusammenhänge steht weniger oder nicht im Zentrum des Interesses. Agentenbasierte Modelle stellen einen Weg dar, das Verständnis komplexer ökonomischer Zusammenhänge zu verbessern bzw. zu quantifizieren. Insbesondere erlauben sie die Durchführung von einer Vielzahl von Computerexperimenten, mit denen Fragestellungen wie der Zusammenhang zwischen Politikmaßnahmen und Strukturwandel untersucht werden können. Basierend darauf, stellt dieser Beitrag das agentenbasierte Modell AgriPoliS (Agricultural Policy Simulator) vor. AgriPoliS ist ein räumlich-dynamisches Modell einer Agrarstruktur, in dem eine Vielzahl individuell abgebildeter landwirtschaftlicher Unternehmen in einer vereinfacht dargestellten Agrarregion agiert und beispielsweise um begrenzt verfügbare landwirtschaftliche Flächen konkurriert.Agent-based systems,Multi-agent systems,Policy analysis,Structural change,Simulation,Agentenbasierte Systeme,Politikanalyse,Multi-Agentensysteme,Strukturwandel,Simulation

Community rotorcraft air transportation benefits and opportunities

Information about rotorcraft that will assist community planners in assessing and planning for the use of rotorcraft transportation in their communities is provided. Information useful to helicopter researchers, manufacturers, and operators concerning helicopter opportunities and benefits is also given. Three primary topics are discussed: the current status and future projections of rotorcraft technology, and the comparison of that technology with other transportation vehicles; the community benefits of promising rotorcraft transportation opportunities; and the integration and interfacing considerations between rotorcraft and other transportation vehicles. Helicopter applications in a number of business and public service fields are examined in various geographical settings

European Regional Science: Between Economy of Culture and Economy of Catastrophes (Review of the ERSA 2005 Amsterdam Congress Reports)

ERSA Congress can be seen as laboratory of ideas with broad representation not only European, but also scientists from US, Japan, Korea, Brazil, African and Asian countries. With very high speed new thoughts and phenomena from the European regional scientific community appear on the stages of the ERSA annual Congresses. Three new features were characteristic for the 2005 ERSA Congress in comparison with the previous ones. First, special focus on the factors of density in the regional development. That was not surprising as the meeting was held in the city of Amsterdam with the highest density in Europe where land and space are scarce goods. Second, integrative tendencies in attempt to use natural factors to explain traditional phenomena of the regional science. Issues of land and water management coincide with economic growth and regional development in many reports. Third, for the first time theme of networks and network society was embedded in many sections of the Congress and in the very title of the Congress itself. All these aspects as participants demonstrated could be positive creative factors increasing cultural assets of the European regions, efficiency of the knowledge transfer, leisure activities; or negative as the source of disaster and risk for human beings. Density factors (lack of people or lack of space?) divide European regional science into two sciences – urban for the populated regions and regional for the territories scarcely populated with very different themes, methods and tools of research. Housing markets, urban sprawl and commuting patterns are popular topics in the first case; labour markets and human capital in the second case. New Economic Geography models work smoothly in the first regions but are inappropriate in the second. Competition is harder in the labour markets of the populated regions but is softer in the regions with scattered population where it is substituted by the forces of cooperation. Contemporary regional society can be sustainable only as network society. In the reports networks were examined on different levels: a) as transportation networks in the investment national or interregional projects; b) as policentricity urban structures replacing Cristaller’s hierarchy of central places; c) as public-public, public-private partnerships combining public and private stakeholders in the decision-making process. Transition of the European regions from the industrial to network/service has begun 25 years ago. Position of the concrete region on this route determines clearly the type and intensity of its problem and research agenda. The more advanced is the region or nation on this route the more often terms like “reinventâ€, “rethinkâ€, “revisited†are used in the scientific community. Rediscovery of the old concepts, definitions, essence (as Amsterdam Congress demonstrated) is very creative and challenging process of the post-industrial regional science.