scholarly journals Staging Co-Design for a Circular Economy

2019 ◽  
Vol 1 (1) ◽  
pp. 3371-3380
Author(s):  
Signe Pedersen ◽  
Christian Clausen
Keyword(s):  
Value Chain ◽  
Circular Economy ◽  
Development Project ◽  
Value Chains ◽  
List Type ◽  
Type Number ◽  
Design Guide ◽  
Design Value ◽  
Circular Design

AbstractIn recent years major companies such as Philips, H&M and Google have adopted a circular economy agenda to promote sustainability. Design consultancies such as IDEO has developed and promoted a circular design guide to help companies in this endeavour. However, designing for a circular economy often require design and reconfiguration of entire value chains – making the transition towards a circular economy rather difficult. In this paper we analyse a development project from the Danish island of Bornholm to investigate how to align diverse actors across the value chain in a process of co-creating systems for a circular economy. We combine design, value chain considerations and circular economy mindsets to informing negotiations of concerns among actors in the value chain.Such strategical navigation might involve:Staging initial spaces for dialogue with central actors from the value chain and initiates a process of mapping out their concernsStaging a re-alignment space where the diverse actors can meet and interact to discuss and negotiate their concerns and their roles in the networkDesign and enactment of a number of objects to faciliate negotiations

The Emergence of Circular Economy in Integrated Agriculture-Livestock Livelihoods

2021 ◽  
Vol 7 (1-2) ◽  
pp. 94-100
Author(s):  
Govind Dhaske ◽  
Anamika Dhaske ◽  
Nirali Shah ◽  
Navnath Gore
Keyword(s):  
Impact Assessment ◽  
Value Chain ◽  
Circular Economy ◽  
Early Stage ◽  
Development Project ◽  
Modern Technology ◽  
Appropriate Technology ◽  
Integrated Agriculture ◽  
The Impact ◽  
Livestock Development

Circularization has been viewed as a core strategic instrument for achieving sustainable development. Along the same lines, applying circularization in an integrated rural livestock development project is essential considering the importance of biomass in the circular economy. However, the geoecological variations, community motivations for sustainability, availability of appropriate technology, and dynamics associated with the livestock product markets outline challenges for the circular economy in biomass-rich rural India. An impact assessment survey of an integrated rural livestock development project revealed an early stage emergence of the circular economy. The survey charted the important role of blended traditional and modern practices in livestock keeping along with biomass management through appropriate technologies conjoined with green value chain-based enterprises for monetizable incentivization. The impact assessment highlighted challenges such as affordability of modern technology, improper microenterprise management, and consumer awareness, which implied policy-based interventions for adequate circularization to ensure sustainable biomass, and allied livelihoods.

scholarly journals Insights from Circular Economy Literature: A Review of Extant Definitions and Unravelling Paths to Future Research

2021 ◽  
Vol 13 (2) ◽  
pp. 859
Author(s):  
Omar Alhawari ◽  
Usama Awan ◽  
M. Khurrum S. Bhutta ◽  
M. Ali Ülkü
Keyword(s):  
Performance Management ◽  
Empirical Research ◽  
Value Chain ◽  
Circular Economy ◽  
Performance Optimization ◽  
Digital Transformation ◽  
Future Research ◽  
Economic Resource ◽  
Circular Design ◽  
Research Studies

The circular economy (CE) has become one of the prominent topics in both natural science and management literature over the last few decades. CE is a dual-loop regenerative system that focuses on the effective and efficient utilization of resources in the ecosystem, which is beneficial to environmental and economic performance optimization. Dual CE initiatives allow firms to increased resource eco-efficiency, as well as resource effectiveness. CE has profound consequences for economic and operational advantage. This reinforces the need for reflection on the definition that may provide guidelines to assess and advance the depth and diversity of the field. We aim to provide a definitional analysis of the CE and suggest future research streams to advance the existing literature. For this purpose, we employed a systematic literature review to collect related publications in the CE. As a result of this, a total of 91 papers were selected, studied, and analyzed. We proposed a sound definition of a circular economy that includes the main identified elements, organizational planning processes, customers and society, utilization of the ecosystem, and economic resource flows. Moreover, future direction agenda, in CE research, is suggested considering three research streams: (1) circular design as value creation and capture, (2) antecedents of key activities, and (3) consequences of key processes. There is limited empirical research conducted on CE, and much of the existing research focuses on theoretical, conceptual, and normative. A few empirical research studies are mainly cross-sectional in their focus and are confined to developing and emerging economies. We hope this study’s findings will extend the field of CE, in which some of the most influential information regarding CE literature is provided. This study suggests that the development of CE initiatives plays an important role in the growing digital transformation in the value chain. There have been limited research studies in the interface of circular economy and Industry 4.0. Future research studies may investigate the extent to which digital transformation can increase the implementation of CE, and their influence on digital performance management.

scholarly journals Potentials and Prerequisites on the Way to a Circular Economy: A Value Chain Perspective on Batteries and Buildings

2022 ◽  
Vol 14 (2) ◽  
pp. 956
Author(s):  
Meta Thurid Lotz ◽  
Robin Barkhausen ◽  
Andrea Herbst ◽  
Matthias Pfaff ◽  
Antoine Durand ◽  
...  
Keyword(s):  
Value Chain ◽  
Circular Economy ◽  
Best Practice ◽  
Legal Framework ◽  
Value Chains ◽  
The Political ◽  
Specific Approach ◽  
A Value ◽  
Production And Consumption ◽  
Key Sectors

It is becoming increasingly clear that linear modes of production and consumption are unsustainable. A circular economy would help to minimize both environmental and social problems. As a result, the concept is gaining momentum in the political discourse. However, current policies do not seem sufficient to transform linear value chains to circular ones. This paper compares the potentials of and prerequisites for a circular economy along two important value chains. As a best practice example, the legal framework along the battery value chain is analyzed. This analysis is used to derive recommendations for how to improve the legal framework along the building value chain. We find that the battery value chain is already addressed by targeted instruments and the instruments addressing the building value chain have to be aligned and their credibility improved through mandatory requirements. A value chain-specific approach to develop the legal framework is promising for key sectors, while both general frameworks and value chain-specific instruments are required to fully exploit the CE for every product.

Case studies.

2021 ◽  
pp. 56-103
Author(s):  
Benjamin Dent ◽  
Ray Collins
Keyword(s):  
Case Studies ◽  
Value Chain ◽  
Lake Victoria ◽  
Development Project ◽  
Guinea Fowl ◽  
Value Chains ◽  
Indigenous Chicken ◽  
Children's Nutrition ◽  
Novel Applications ◽  
Green Label

Abstract This section illustrates Value Chain Thinking (VCT) in practice, using a combination of our development project experiences and Australia Awards Africa case studies that we have mentored. It provides case studies on which VCT has been put into practice: These examples cover: aquaculture on Lake Victoria, Kenya; Pakistani mangoes; Ghanaian pineapples; livestock value chains covering Madagascan goats, Ugandan rabbits, Ghanaian guinea fowl, Nigerian catfish and Kenyan indigenous chicken; and vegetable value chains in Ethiopia, Tanzania, Malawi and Mozambique. Then the researchers offer two novel applications of VCT: (1) to improve children's nutrition in Madagascar, Cameroon and Zambia, as well as value chain members' livelihoods; and (2) to design and operate the Ghana Green Label scheme for food certification covering both safety and environmental assurances.

Solar Corona Investigation by the Coronal Line Photometer at Lomnický Peak

1994 ◽  
Vol 144 ◽  
pp. 431-434
Author(s):  
M. Minarovjech ◽  
M. Rybanský
Keyword(s):  
Solar Corona ◽  
Time Resolution ◽  
Active Regions ◽  
High Time ◽  
High Time Resolution ◽  
List Type ◽  
Type Number ◽  
Coronal Line ◽  
Global Cycle

AbstractThis paper deals with a possibility to use the ground-based method of observation in order to solve basic problems connected with the solar corona research. Namely:1.heating of the solar corona2.course of the global cycle in the corona3.rotation of the solar corona and development of active regions.There is stressed a possibility of high-time resolution of the coronal line photometer at Lomnický Peak coronal station, and use of the latter to obtain crucial observations.

The LDE-Type Flare Occurrence (1969-1993)

1994 ◽  
Vol 144 ◽  
pp. 279-282
Author(s):  
A. Antalová
Keyword(s):  
Time Series ◽  
Fourier Analysis ◽  
Sunspot Cycle ◽  
List Type ◽  
Type Number ◽  
Solar Cycles ◽  
Type Iv ◽  
Long Duration ◽  
Cycle Maximum ◽  
Flare Index

AbstractThe occurrence of LDE-type flares in the last three cycles has been investigated. The Fourier analysis spectrum was calculated for the time series of the LDE-type flare occurrence during the 20-th, the 21-st and the rising part of the 22-nd cycle. LDE-type flares (Long Duration Events in SXR) are associated with the interplanetary protons (SEP and STIP as well), energized coronal archs and radio type IV emission. Generally, in all the cycles considered, LDE-type flares mainly originated during a 6-year interval of the respective cycle (2 years before and 4 years after the sunspot cycle maximum). The following significant periodicities were found:• in the 20-th cycle: 1.4, 2.1, 2.9, 4.0, 10.7 and 54.2 of month,• in the 21-st cycle: 1.2, 1.6, 2.8, 4.9, 7.8 and 44.5 of month,• in the 22-nd cycle, till March 1992: 1.4, 1.8, 2.4, 7.2, 8.7, 11.8 and 29.1 of month,• in all interval (1969-1992):a)the longer periodicities: 232.1, 121.1 (the dominant at 10.1 of year), 80.7, 61.9 and 25.6 of month,b)the shorter periodicities: 4.7, 5.0, 6.8, 7.9, 9.1, 15.8 and 20.4 of month.Fourier analysis of the LDE-type flare index (FI) yields significant peaks at 2.3 - 2.9 months and 4.2 - 4.9 months. These short periodicities correspond remarkably in the all three last solar cycles. The larger periodicities are different in respective cycles.

Discussion following the presentation by F. Deubner

1977 ◽  
Vol 36 ◽  
pp. 69-74
Keyword(s):  
List Type ◽  
The Sun ◽  
Type Number ◽  
Harmonic Motion ◽  
Locally Excited ◽  
Long Period ◽  
Coherent Wave ◽  
Short Period ◽  
Global Modes

The discussion was separated into 3 different topics according to the separation made by the reviewer between the different periods of waves observed in the sun :1) global modes (long period oscillations) with predominantly radial harmonic motion.2) modes with large coherent - wave systems but not necessarily global excitation (300 s oscillation).3) locally excited - short period waves.

Prominences and Solar Activity

1979 ◽  
Vol 44 ◽  
pp. 357-372
Author(s):  
Z. Švestka
Keyword(s):  
Solar Activity ◽  
Solar Cycle ◽  
List Type ◽  
Type Number ◽  
Flare Loops ◽  
Filament Activation

The following subjects were discussed:(1)Filament activation(2)Post-flare loops.(3)Surges and sprays.(4)Coronal transients.(5)Disk vs. limb observations.(6)Solar cycle variations of prominence occurrence.(7)Active prominences patrol service.Of all these items, (1) and (2) were discussed in most detail and we also pay most attention to them in this report. Items (3) and (4) did not bring anything new when compared with the earlier invited presentations given by RUST and ZIRIN and therefore, we omit them.

A New System For Optomanual Semiautomatic Quantitative Image Analysis

1977 ◽  
Vol 35 ◽  
pp. 210-211
Author(s):  
H.P. Rohr
Keyword(s):  
Image Analysis ◽  
Volume Density ◽  
List Type ◽  
Distribution Analysis ◽  
Type Number ◽  
Point Counting ◽  
Human Eye ◽  
Quantitative Image ◽  
Point Density ◽  
Electronic Counting

Today, in image analysis the broadest possible rationalization and economization have become desirable. Basically, there are two approaches for image analysis: The image analysis through the so-called scanning methods which are usually performed without the human eye and the systems of optical semiautomatic analysis completely relying on the human eye.The new MOP AM 01 opto-manual system (fig.) represents one of the very promising approaches in this field. The instrument consists of an electronic counting and storing unit, which incorporates a microprocessor and a keyboard for choice of measuring parameters, well designed for easy use.Using the MOP AM 01 there are three possibilities of image analysis:the manual point counting,the opto-manual point counting andthe measurement of absolute areas and/or length (size distribution analysis included).To determine a point density for the calculation of the corresponding volume density the intercepts lying within the structure are scanned with the light pen.

Hydration Chamber for Jeolco 200 Kv Microscope

1970 ◽  
Vol 28 ◽  
pp. 542-543
Author(s):  
V. R. Matricardi ◽  
G. G. Hausner ◽  
D. F. Parsons
Keyword(s):  
Electron Microscope ◽  
Water Vapor ◽  
Vapor Pressure ◽  
Pressure Gradient ◽  
Room Temperature ◽  
List Type ◽  
Type Number ◽  
Equilibrium Vapor Pressure

In order to observe room temperature hydrated specimens in an electron microscope, the following conditions should be satisfied: The specimen should be surrounded by water vapor as close as possible to the equilibrium vapor pressure corresponding to the temperature of the specimen.The specimen grid should be inserted, focused and photo graphed in the shortest possible time in order to minimize dehydration.The full area of the specimen grid should be visible in order to minimize the number of changes of specimen required.There should be no pressure gradient across the grid so that specimens can be straddled across holes.Leakage of water vapor to the column should be minimized.

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