arXiv subjects

Luca D'Acci

Publications and source records attributed to Luca D'Acci.

4 recordsLinked to original sources

arXiv2015

Urban DNA for cities evolutions. Cities as physical expression of dynamic equilibriums between competitive and cooperative forces

Cities are physical manifestations of our competitive and cooperative behaviours. The tension between these two forces generates dynamic equilibriums whose material expressions are cities and their evolutions. In a Darwinian cooperative view, as Darwinism does not involve only competition, the public benefit obtained by cooperation, return in terms of private benefit too. An urban genetic code is proposed, according to which cities emerge connecting nature and urbanity, and as sum of multiuse, independent micro-areas, each one with its centrality, job locations, parks and daily shops-services and amenities. This mechanism, called Isobenefit Urbanism, is not static and pre-designed, but allows infinitely dynamic changes and expansions. Rather than describing The ideal city, which doesn't exist outside our own minds, Isobenefit Urbanism describes what a city should avoid to be in order to not become an unideal city. Its six principles are the urban DNA which does not give predetermined forms but indications to follow according to contexts and times. From an environmental angle, Isobenefit cities are resilient, low carbon, adaptive.

cs.CY↗

arXiv2015

Mathematize urbes by humanizing them: Cities as Isobenefit Landscapes. Psycho-Economical distances and Isobenefit Lines

The city reading proposed is a modern postmodern urbanism approach which quantifies but by passing through subjectivism. The isobenefit lines shown translate cities into benefit landscapes, subjective and continually changeable according to personal moods needs preferences and urban transformations. They read attractiveness and how they flow throughout the city. Doing it for each urban point and for each urban attraction, we obtain the isobenefit orography of the city, namely a map of its urban attractions and of their flows. This is a liquid surface rather than solid, as it varies across time and people. It is in this liquidness where resides the complexity of cities, their bottom up spirit and the dynamicity of equilibriums and networks. People do not necessarily go in the most accessible points, but where they need and want to, and, they flow through paths they need or choose to pass through. It is also introduced the likeability of places and paths: in addition to the usual parameters currently used, which weight distances in terms of physical distance, cost, time or mental easiness representations, psycho-economical distances used in the isobenefit lines proposed here, also consider how a place and a path pleases us. According to the Underground Hedonic Theory, this pleasure to pass through or to stay in agreeable areas has an underground and an inertia effect too which contributes to delight our lives. The final purpose of the science of cities and urban design is to understand cities and make them efficient and attractive to please our lives in them.

physics.soc-ph↗

arXiv2013

Modeling Spatial Equilibrium in Cities: the Isobenefit Lines

I propose and briefly define the concept of Urban Isobenefit Lines by using functions as easy as efficient, whose results can offer a rich tool to use into spatial equilibrium analysis involving cities. They are line joining urban points with equal level of positional advantage from city amenities. The results which one obtain by implementing a chosen function, gave specific scenarios: numerically described by indicators and graphically visualized by efficient city matrix views. This is also a theoretical concept for the Urban Economics theory and Spatial Equilibrium analysis in cities.

q-fin.GN↗

arXiv2013

Isobenefit Lines, Breaking Point of equal attraction, Uniformity Benefit, Variety Value and Proximity Value, Preference Gap Gain

Isobenefit Lines can offer a certain range of applicability in Location Theory and Gravitational Models for Urban and Geography Economics, in positional decision processes made by citizens, and, last but not least, in land value and property market theories and analysis. The value of a land, or a property, in a generic k point, is, ceteris paribus, the mirror of the quality, attractiveness, benefit characterizing k. Preference Gap Gain (PGG) of a person, is the difference between his Personal Isobenefit Lines and that of the majority of people. In monetary terms, when buying or renting a property, it can become an economic gain or vice versa, and PGG localizes and quantifies this gain.

q-fin.GN↗