Search results for "Bottom-Up"
showing 10 items of 71 documents
Exploring the contribution of grassroots innovations to justice: using the capability approach to normatively address bottom-up sustainable transitio…
2020
There is growing interest in the potential of grassroots innovations for the transition towards more just and sustainable societies. Nevertheless, there is lack of clear normative discussion regarding these processes. The paper strives to propose and test a framework that enables an analysis of how and in which sense specific grassroots innovation processes may be contributing to the construction of more just societies. To this end, we connect elements of the multi-level perspective on sociotechnical transitions (frequently used in the analysis of grassroots innovations) with elements of the capability approach, which offers a multi-dimensional perspective to justice. The framework is used …
Biochar and Forage Peanut improve pastures: Evidence from a field experiment in Brazil
2023
Pasturelands, often degraded, represent most of the converted lands globally. It is important to understand how different pasture management approaches can improve soil quality, increase feed production and farmer income. Here, the impact of different soil enhancers on soil quality and productivity of three cultivars of Brachiaria (Syn. Urochloa) forage grass is presented. Soil enhancers included: biochar - a carbon-rich product from biomass pyrolysis, moinha (local charcoal residue), traditional fertiliser containing nitrogen, phosphorus and potassium, lime, and forage peanut (Arachis pintoi cv. Amarillo). Considering the total biomass produced over the experiment (sum of four harvests), t…
A Top-Down Method for Long-Term Investing
2021
This paper bases long-term investing on a tradeable stochastic discount factor (SDF), relates it to the growth optimal portfolio and argues for a top-down method, where modeling efforts are directed at capturing its long-run dynamics in a generalized setting. This differs from the common, cumbersome bottom-up method of modeling many risky securities in the marketplace. Various optimal portfolio strategies can be implemented efficiently using fractional expectations of the SDF. This paper illustrates empirically for the US stock market that the proposed method leads to higher wealth, higher returns on investment and higher long-term utility levels.
On parsing optimality for dictionary-based text compression—the Zip case
2013
Dictionary-based compression schemes are the most commonly used data compression schemes since they appeared in the foundational paper of Ziv and Lempel in 1977, and generally referred to as LZ77. Their work is the base of Zip, gZip, 7-Zip and many other compression software utilities. Some of these compression schemes use variants of the greedy approach to parse the text into dictionary phrases; others have left the greedy approach to improve the compression ratio. Recently, two bit-optimal parsing algorithms have been presented filling the gap between theory and best practice. We present a survey on the parsing problem for dictionary-based text compression, identifying noticeable results …
Dictionary-symbolwise flexible parsing
2012
AbstractLinear-time optimal parsing algorithms are rare in the dictionary-based branch of the data compression theory. A recent result is the Flexible Parsing algorithm of Matias and Sahinalp (1999) that works when the dictionary is prefix closed and the encoding of dictionary pointers has a constant cost. We present the Dictionary-Symbolwise Flexible Parsing algorithm that is optimal for prefix-closed dictionaries and any symbolwise compressor under some natural hypothesis. In the case of LZ78-like algorithms with variable costs and any, linear as usual, symbolwise compressor we show how to implement our parsing algorithm in linear time. In the case of LZ77-like dictionaries and any symbol…
Multiple SIP strategies and bottom-up adorning in logic query optimization
1990
Preprocessing methods called “readorning” and “bottom-up adorning” are introduced as means of enlarging the application domain of magic sets and related query optimization strategies for logic databases. Readorning tries to make possible the simultaneous use of multiple sideways information passing (sip) strategies defined for a rule, thus yielding an optimization effect that may not be achieved by any particular choice of sip strategies. Bottom-up adorning is used to make magic sets applicable to cases in which potential optimizations can be derived from bindings coming upwards from rule bodies to rule heads in bottom-up evaluation. These include the cases in which we know that some base r…
The Urban Park as a "Social Island". The ANP in the Participatory Project of Parco Uditore in Palermo
2019
An urban park provides many environmental and recreational facilities and services, and moreover it may become a catalyst for social energies and an instrument of community identification. This paper analyses whether participation and bottom-up planning may compensate institutional absences in implementation of urban parks, and how multiple criteria model may support socially shared decisions about their management. These issues are examined from the singular case of Parco Uditore in Palermo (Italy) that is located in a land which has been surprisingly undeveloped, despite the expansion of the city. The phases of promotion, planning and implementation of the park were the result of a synerg…
Decentralization in Ukraine and Bottom-Up European Integration
2020
Decentralization is one of the most profound reforms undertaken in Ukraine. It includes the voluntary merging of previously independent villages and towns into larger Amalgamated Territorial Communities (ATCs). The European Union strongly supports the reform but does not make Ukraine’s further European integration conditional upon it. In order to study whether decentralization can, nevertheless, contribute to the country’s European integration, this chapter adopts a sociological perspective. It asks whether decentralization has led to an increase in community twinning and participation of Ukrainian communities in transnational municipal networks. It is based on a survey conducted among the …
University-wide, top-down curriculum reform at a Finnish university: perceptions of the academic staff
2021
This study examines academic staff’s perceptions of a university-wide, top-down curriculum reform in terms of the management of the reform, the support provided by the university’s administration, and the utilisation of the university’s guidelines. Differences between faculties are also scrutinised. The study was conducted at a multidisciplinary public research university in Finland using the survey method. The data (n = 394) consisted of academic staff’s responses to multiple-choice and open-ended questions. Correlation coefficients, exploratory factor analyses, and a one-way analysis of variance (ANOVA) were utilised to analyse the quantitative data. Responses to the open-ended questions …
Inovācijas universitātē: varas un leģitimitātes aspekti
2014
Anotācija Promocijas darba mērķis ir analizēt augšupvērstas inovācijas universitātē, tās specifiskajā strukturālās varas, profesionālās autonomijas un profesionālo prakses kopienu kontekstā. Pētījums veikts izmantojot konstrukcionisma pieeju datos pamatotās vidēja līmeņa teorijas izveidei. Teorētiskie jēdzieni aizgūti no situatīvās mācīšanās teorijas, papildinātas ar mikro-institucionālisma pieeju un varas konceptualizācijām. Veikta 30 mikro-gadījumu analīze divās Latvijas universitātēs. Pētījumā raksturota augšupvērstu inovāciju daudzveidība, izveidoti trīs inovāciju virzīšanas modeļi, identificēta to iznākumu ietekme uz inovācijas rosinātāju identitāti un piederību. Autore saista šos rezu…