8,642 research outputs found
Manual on prototyping methodology and multifunctional crop rotation
This VEGINECO manual is one of a series of publications resulting from the VEGINECO project. VEGINECO specialises in producing tested and improved multi-objective farming methods for key farming practices â e.g. crop rotation, fertilisation and crop protection â to facilitate the integration of potentially conflicting objectives like economy and ecology. This report consists of two parts. The first part describes the prototyping methodology and how it was used in the VEGINECO project (Chapters 2 - 5). The second part describes the methodology for developing crop rotation strategies with examples of its application under different conditions in Europe (Chapter 6 - 11)
Asymmetric Mach-Zehnder fiber interferometer test of the anisotropy of the speed of light
Two optical fiber Mach-Zehnder interferometers were constructed in an
environment with a temperature stabilization of better than 1 mK per day. One
interferometer with a length of 2 m optical fiber in each arm with the main
direction of the arms parallel to each other. A path (length 175 mm) filled
with atmospheric air is inserted in one arm. Another interferometer with a
length of 2 m optical fiber in each parallel arm acts as a control. In each arm
1 m of fiber was wound around a ring made of piezo material enabling the
control of the length of the arms by means of a voltage. The influence of
rotation of the interferometers at the Earth surface on the observed phase
differences was determined. For one interferometer (with the air path) it was
found that the phase difference depends on the azimuth of the interferometer.
For the other one no relevant dependence on the azimuth has been measured.Comment: 6 pages, 6 figure
Estimating Extreme Bivariate Quantile Regions
AMS 2000 subject classifications. Primary 62G32, 62G05; secondary 60G70, 60F05.
Political Regime Change, Economic Reform and Growth Accelerations
Using an improved definition and indicator of growth accelerations, we examine whether political regimes, regime changes, and economic reform are related to growth accelerations. Our results show that economic growth accelerations are preceded by economic reforms. Furthermore, we find that growth accelerations are more likely to happen after the start of a new political regime.economic growth, growth accelerations, regime changes, economic reform
Exact Markovian kinetic equation for a quantum Brownian oscillator
We derive an exact Markovian kinetic equation for an oscillator linearly
coupled to a heat bath, describing quantum Brownian motion. Our work is based
on the subdynamics formulation developed by Prigogine and collaborators. The
space of distribution functions is decomposed into independent subspaces that
remain invariant under Liouville dynamics. For integrable systems in
Poincar\'e's sense the invariant subspaces follow the dynamics of uncoupled,
renormalized particles. In contrast for non-integrable systems, the invariant
subspaces follow a dynamics with broken-time symmetry, involving generalized
functions. This result indicates that irreversibility and stochasticity are
exact properties of dynamics in generalized function spaces. We comment on the
relation between our Markovian kinetic equation and the Hu-Paz-Zhang equation.Comment: A few typos in the published version are correcte
Aid: the drama, the fiction, and does it work?
The international community is under increased pressure to show results from the money invested through aid agencies. While support for international development has been large, there has also been a forceful critique. This paper argues that much of the public debate tends to be counter-productive, as it takes insufficient account of the diversity of aid motives, agencies, modalities, and problems addressed. Critical to the debate on aid, in my view, is to focus on the accountability towards both the funders and recipients of aid, and the international community needs to ensure strengthened accountability -- rather than producing "results" -- enables increased space for the development of developmental social contracts
Rescuing exclusion from the poverty debate
This paper discusses the conceptualisation of group deprivation - particularly of Dalits and Adivasis - in recent poverty analyses in India. While the poverty debate highlights the severe inequalities that groups based on social identity are exposed to, it pays insufficient attention to the nature of exclusion these groups suffer from, and the causes of historically rooted deprivation. This paper explores the ways in which âSC/STâ (Scheduled Castes and Scheduled Tribes) categories are applied in analysis and policy, the role of these categorisation in Indiaâs targeted poverty programmes and recent BPL (Below Poverty Line) Census, how these understate different manifestations of discrimination, and the risks that targeted programmes enhance stigma of groups
Will China change international development as we know it?
What do China's dramatic transformations over the last 30 years imply for development studies and practice?
China has lifted a record number of people out of poverty, and has had sustained levels of economic growth close to ten per cent per annum, albeit at well-documented environmental and social costs. China now appears to be developing effective responses to the global financial crisis, and fairly recently China's global role has seen an enormous surge. It is making these transformations with institutions that continue to surprise international observers, while China experts usually merely emphasise the pragmatic nature of its post-1978 reforms. The "rise of China", thus, is challenging our perspectives and practices in international development.
While China's experience has largely remained outside the mainstream development debate, an increasing number of studies and essays have started to articulate the lessons from China's development path for the international development community, and particularly for Africa. This paper reflects on the different interpretations of these lessons, as well as the process of lesson learning, which so far has been strongly supply-driven. It further discusses China's new global economic and political role, and the position of China's aid as "soft power" within the new global structures. These new trends make it essential to reflect on how we understand development and globalisation. To do so we need better mutual understanding and particularly a better understanding of how and why China achieved what it did over the last 30 years, and its remaining challenges.
This essay is a modest attempt to promote this
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