Top-down low-cost housing supply since the mid-1990s in Maputo: bottom-up responses and spatial consequences

2017 ◽  
Vol 93 (1) ◽  
pp. 41-67 ◽  
Author(s):  
Vanessa de Pacheco Melo
Keyword(s):  
Low Cost ◽  
Housing Supply ◽  
Top Down ◽  
Bottom Up ◽  
Down Low ◽  
Low Cost Housing

scholarly journals Multiscale additive manufacturing of polymers using 3D photo-printable self-assembling ionic liquid monomers

2019 ◽  
Vol 4 (3) ◽  
pp. 580-585 ◽  
Author(s):  
Bineh G. Ndefru ◽  
Bryan S. Ringstrand ◽  
Sokhna I.-Y. Diouf ◽  
Sönke Seifert ◽  
Juan H. Leal ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Additive Manufacturing ◽  
Self Assembly ◽  
Low Cost ◽  
Low Resolution ◽  
Top Down ◽  
Bottom Up ◽  
Cost Approach ◽  
Self Assembling ◽  
Nanoscale Features

Combining bottom-up self-assembly with top-down 3D photoprinting affords a low cost approach for the introduction of nanoscale features into a build with low resolution features.

scholarly journals Middle-Out Approaches to Reform of University Teaching and Learning: Champions striding between the top-down and bottom-up approaches

2005 ◽  
Vol 6 (1) ◽  
Author(s):  
Rick Cummings ◽  
Rob Phillips ◽  
Rhondda Tilbrook ◽  
Kate Lowe
Keyword(s):  
Change Management ◽  
Teaching And Learning ◽  
Low Cost ◽  
Theory And Practice ◽  
University Teaching ◽  
Top Down ◽  
Bottom Up ◽  
Executive Staff ◽  
Accepted Practice ◽  
External Forces

<P>In recent years, Australian universities have been driven by a diversity of external forces, including funding cuts, massification of higher education, and changing student demographics, to reform their relationship with students and improve teaching and learning, particularly for those studying off-campus or part-time. Many universities have responded to these forces either through formal strategic plans developed top-down by executive staff or through organic developments arising from staff in a bottom-up approach. By contrast, much of Murdoch University's response has been led by a small number of staff who have middle management responsibilities and who have championed the reform of key university functions, largely in spite of current policy or accepted practice. This paper argues that the "middle-out" strategy has both a basis in change management theory and practice, and a number of strengths, including low risk, low cost, and high sustainability. Three linked examples of middle-out change management in teaching and learning at Murdoch University are described and the outcomes analyzed to demonstrate the benefits and pitfalls of this approach.</P>

Mapping seabed assemblages using comparative top-down and bottom-up classification approaches

2006 ◽  
Vol 63 (7) ◽  
pp. 1536-1548 ◽  
Author(s):  
Paul D Eastwood ◽  
Sami Souissi ◽  
Stuart I Rogers ◽  
Roger A Coggan ◽  
Craig J Brown
Keyword(s):  
Low Cost ◽  
A Priori ◽  
Ground Truth ◽  
Unsupervised Classification ◽  
Physical Structure ◽  
Unconsolidated Sediments ◽  
Top Down ◽  
Bottom Up ◽  
Infaunal Community ◽  
Acoustic Technologies

Acoustic technologies yield many benefits for mapping the physical structure of seabed environments but are not ideally suited to classifying associated biological assemblages. We tested this assumption using benthic infauna data collected off the south coast of England by applying top-down (supervised) and bottom-up (unsupervised) classification approaches. The top-down approach was based on an a priori acoustic classification of the seabed followed by characterization of the acoustic regions using ground-truth biological samples. By contrast, measures of similarity between the ground-truth infaunal community data formed the basis of the bottom-up approach to assemblage classification. For both approaches, individual assemblages were mapped by first computing Bayesian conditional probabilities for ground-truth stations to estimate the probability of each station belonging to an assemblage. Assemblage distributions were then interpolated over a regular grid and characterized using an indicator value index. While the two methods of classification yielded assemblages and output maps that were broadly comparable, the bottom-up approach arrived at a slightly better defined set of biological assemblages. This suggests that acoustically derived seabed data are not ideally suited to class ifying biological assemblages over unconsolidated sediments, despite offering considerable advantages in providing rapid and low-cost assessments of seabed physical structure.

A New Process to Fabricate Three Dimensional Ordered Nano Dot Array Structures by Nano Plastic Forming and Dewetting

2012 ◽  
Vol 523-524 ◽  
pp. 627-632
Author(s):  
Zhen Xing Li ◽  
Akinori Yamanaka ◽  
Masahiko Yoshino
Keyword(s):  
Metal Layer ◽  
Low Cost ◽  
Three Dimensional ◽  
Process Conditions ◽  
Top Down ◽  
Bottom Up ◽  
Spacer Layer ◽  
New Process ◽  
Plastic Forming ◽  
Array Structures

Three dimensional (3D) nano/quantum dot array structures have attracted more and more attention due to their broad applications. A new fabrication method of multilayer ordered nano dot array with low cost and high throughput is developed in this paper. This process is combination of Top-down and Bottom-up approaches: Nano Plastic Forming (NPF) patterning of metal layer coated on the substrate as Top-down approach and self-organization by dewetting as Bottom-up approach. Effects of process conditions on 3D nano-dot array formation are studied experimentally. Regularity and uniformity of first layer nano-dot array is transferred to the second layer nano-dots by optimizing thickness of the spacer layer and Au coating layer. Multilayer ordered nano dot array structures with good alignment are obtained by repeating coating and annealing processes.

Rising residential energy consumption and GHG emissions in Malaysia: A case study of public low-cost housing projects in Kuala Lumpur

2016 ◽  
Vol 26 (3) ◽  
pp. 375-391 ◽  
Author(s):  
Suzaini M. Zaid ◽  
Peter Graham
Keyword(s):  
Energy Efficiency ◽  
Residential Buildings ◽  
Low Cost ◽  
Ghg Emissions ◽  
Building Energy ◽  
Energy Performance ◽  
Kuala Lumpur ◽  
Bottom Up ◽  
Housing Projects ◽  
Low Cost Housing

Malaysia’s electricity consumption is increasing exponentially as it gears towards becoming a developed nation by year 2020. This paper is aimed at policy development in terms of energy efficiency and building design as Malaysia has yet to establish any mandatory energy efficiency or energy performance building code. The focus on public low-cost housing projects is important as it is administered by government agencies and provides possible streamlining of proposed energy policies for the housing sector. Presented in this paper are findings from fieldwork conducted to investigate the energy performance and green house gas (GHG) emissions from the building operation of two public low-cost housing projects in Kuala Lumpur. The baseline calculations use UNEP–SBCI’s Common Carbon Metric tool to provide project-specific calculations of energy and emissions intensity with its bottom-up approach, while presenting a national-scale projection using its top-down approach. Findings from bottom-up analysis suggest that Malaysian public low-cost housing households consume more than benchmarks set by the World Energy Council and the International Energy Agency, in terms of Building Energy Index (BEI) of kwh/m2/year. This is a reflection of the absence of building energy efficiency legislation in Malaysia, both for residential and non-residential buildings. The importance of this research lies in its focus on a developing country experiencing rapid urbanisation and climate change effects.

‘Top-down’ planning for scalable sustainable sanitation in high-density low-income urban areas: is it more appropriate than ‘bottom-up’ planning?

2018 ◽  
Vol 8 (2) ◽  
pp. 165-175 ◽  
Author(s):  
Duncan Mara
Keyword(s):  
Developing Countries ◽  
Low Income ◽  
Urban Areas ◽  
Universal Access ◽  
Low Cost ◽  
High Density ◽  
Top Down ◽  
Bottom Up ◽  
The Sustainable Development ◽  
Sanitation Systems

Abstract We argue that, if the sanitation target of the Sustainable Development Goals (universal access to ‘safely-managed’ sanitation by 2030) is to have any chance of success, then a community-sensitive top-down planning approach has to be adopted for sanitation provision in high-density low-income urban areas in developing countries, as ‘bottom-up’ planning is much more time-consuming and not yet successfully proven at scale. In high-density low-income urban areas, there is only a limited choice for safely-managed sanitation: (i) simplified/condominial sewerage (which becomes cheaper than on-site sanitation systems at the relatively low population densities of 160–200 people per ha), (ii) low-cost combined sewerage (if it is cheaper than separate simplified sewerage and stormwater drainage), (iii) community-managed sanitation blocks, and (iv) container-based sanitation (the last two of which are suitable, especially in slums, when neither simplified sewerage nor low-cost combined sewerage is affordable or technically feasible). These four sustainable sanitation options are as scalable in developing countries as conventional sewerage has been in industrialized countries.

scholarly journals From 1D to 3D: a new route to fabricate tridimensional structures via photo-generation of silver networks

RSC Advances ◽  
2015 ◽  
Vol 5 (36) ◽  
pp. 28633-28642 ◽  
Author(s):  
Huaizhong Shen ◽  
Yuxin Wu ◽  
Liping Fang ◽  
Shunsheng Ye ◽  
Zhaoyi Wang ◽  
...  
Keyword(s):  
Low Cost ◽  
Building Blocks ◽  
Top Down ◽  
Time Saving ◽  
Bottom Up ◽  
3D Structures ◽  
The Matrix

A time-saving and low-cost method is established to construct stacked 3D structures through the combination of bottom-up and top-down techniques which enables us to create building blocks freely and to precisely adjust the matrix feature.

Psychology and Culture: Top Down Versus Bottom Up?

PsycCRITIQUES ◽  
2005 ◽  
Vol 50 (19) ◽  
Author(s):  
Michael Cole
Keyword(s):  
Top Down ◽  
Bottom Up
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