Agent-Based Social Pedestrian Simulation for the Validation of Urban Planning Recommendations
The goal of this project is a deeper understanding of the mechanisms that shape a city with a focus on pedestrian flow. Pedestrian flow reveals the use of space, the capacity and use of transportation and has an impact on the health of people. Movement patterns of pedestrians are a topic in many related fields like transportation planning, computer graphics and sociology. This project augments the simulation of pedestrian decision processes by taking into account the preferences for surrounding
Author(s): Aschwanden, Gideon

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Cultmapas urbanos [Urban cultmaps]
This research aims to address the catalog urban interventions as graffiti, stencil and sticker spotted in association with the city. As a result, they develop artistic urban mappings which assemble a structure marking the artistic manifestations. The urban arts, are georeferenced and eventually become part of a catalografia which can be viewed on the web entitled Cultmap art.
Author(s): Andres, Carolina Reichert; Minuzzi, Reinilda

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Kleuters maken een knuffel : Stappenplan
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De kleuters maken een knuffelbeer. Eerst maken ze aan de hand van het stappenplan het hoofd, dit wordt op een groot blad gekleefd. Onder het hoofd wordt dan een lichaam getekend dat ze met watten mogen beplakken, zodat ze een zachte beer …


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Ontwikkel een digitale jobadvisor en win tweeduizend euro
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Jobsites, vacaturedatabanken, professionele netwerksites, mobile apps, online testen, webcursussen, … Er zijn zoveel mogelijkheden om een job te vinden.

Maar wat heb jij nodig om werk te vinden? Ontwikkel een …


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Stichtng Weet wat je besteedt : Hoe omgaan met je geld
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De Stichting wil jongeren advies geven over het goed omgaan met geld met het doel financieel zelfredzaam te worden. Door middel van de crowd-sourced film Edgie waarin Wouter Bos, voormalig Nederlands minister van …


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Chocoladetraject : Educatief Pakket
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Het chocoladetraject is een gratis educatief pakket voor lessen over transport en logistiek.

Het betreft materiaal voor een vakoverschrijdend project waarin de vakken aardrijkskunde, techniek en Nederlands aan bod komen en er ook …


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Educatief gsm-gebruik : Lespakket
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Gsm's en school: het is niet altijd een goed huwelijk. Ze kunnen soms ordeverstorend zijn. Maar anderzijds heeft bijna elke leerling er één en zou het een gemiste kans zijn om er op school geen aandacht aan te besteden. …


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Verantwoord omgaan met Wi-Fi en gsm-straling op school
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Computers, gsm’s en allerhande moderne communicatietechnologie zijn niet meer weg te denken uit de leefwereld van kinderen en jongeren. Kinderen en jongeren en in toenemende mate ook hun ouders, verwachten dat ze hun toestellen ook op school …


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French Naughts and Crosses
French Naughts and Crosses.
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Activation and information in working memory and attention

Bradley R. Postle, recorded 12/5/12


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Excitonics

An exciton is an excitation that mediates the absorption and emission of light, especially in low-cost disordered solar cell and LED materials. In the Center for Excitonics, we seek to supersede traditional electronics with devices that use excitons to mediate the flow of energy. In my presentation, I’ll describe two applications of excitonics in devices: high-brightness quantum dot-based LEDs, and exciton fission in high efficiency solar cells.


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Liquid Biofuels: An International Solution to an International Challenge

Concerns about national security issues and global warming have kindled interest in production of liquid biofuels. In order to minimize the conflict between food and fuel use, it is increasingly important to establish systems for the efficient production of biofuels from non-food polysaccharides such as renewable lignocellulosic biomass or directly from carbon dioxide and other gases. Ethanol, typically used as “biofuel” in cars— alcohol refined from grain or sugar cane &mda
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How Far Can a Shirt See: The Birth of a Revolution in Fibers and Fabrics

Fibers and fabrics are among the earliest forms of human expression; these materials shield us from the environment and play an important role in defining who we are. Surprisingly, in sharp contrast to other areas of our existence, fibers have remained practically unchanged for thousands of years.

Can fibers become highly functional objects similar to computers and smartphones? Can they see, hear, sense, and communicate? Our research focuses on extending the f
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Acknowledgements

The content acknowledged below is Proprietary (see terms and conditions). This content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Licence

Grateful acknowledgement is made to the following sources for permission to reproduce material in this unit:

Author(s): The Open University

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5 Summary

  1. Eutrophication is a process in which an ecosystem accumulates mineral nutrients. It can occur naturally, but is usually associated with human activity that releases nutrients into the environment.

  2. Anthropogenic eutrophication has caused a widespread loss of biodiversity in many systems. Recent attempts to reverse the process are proving difficult and expensive.

  3. Symptoms of eutrophication are most readily seen in aquatic sys
    Author(s): The Open University

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4.4 Reducing nutrient availability

Once nutrients are in an ecosystem, it is usually much harder and more expensive to remove them than tackle the eutrophication at source. The main methods available are:

  • precipitation (e.g. treatment with a solution of aluminium or ferrous salt to precipitate phosphates);

  • removal of nutrient-enriched sediments, for example by mud pumping; and

  • removal of biomass (e.g. harvesting of common reed) and using it for thatchi
    Author(s): The Open University

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3.2 Anthropogenic sources of nutrients

In addition to the natural sources of nutrients referred to above, nitrogen and phosphorus enter the environment from a number of anthropogenic sources. These are considered below.


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3.1.1 Phosphorus

Phosphorus has a number of indispensable biochemical roles and is an essential element for growth in all organisms, being a component of nucleic acids such as DNA, which hold the code for life. However, phosphorus is a scarce element in the Earth's crust and natural mobilization of phosphorus from rocks is slow. Its compounds are relatively insoluble, there is no reservoir of gaseous phosphorus compounds available in the atmosphere (as there is for carbon and nitrogen), and phosphorus is also
Author(s): The Open University

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