A tool for simulating heat sharing opportunities between multiple buildings

2017 ◽  
Vol 28 (4) ◽  
pp. 549-565
Author(s):  
Roy Botman ◽  
Jos van Schijndel
Keyword(s):  
Energy Balance ◽  
Simulation Model ◽  
Design Methodology ◽  
Building Simulation ◽  
Storage Tanks ◽  
Demand And Supply ◽  
Content Type ◽  
Matlab Code ◽  
Heat Demand

Purpose The purpose of this paper is to present a tool for simulating heat sharing opportunities between multiple buildings. Design/methodology/approach The approach is based on a building simulation model, HAMBase, in combination with an analytical programming code using MatLab. Findings The tool provides a quick insight in possibilities for district heat sharing. It is able to operate without using too many parameters. From the results, it can be derived that storage tanks provide a great advantage in performance over the direct heat demand and supply method. Research limitations/implications The main limitations are as follows: the used models are based on assumptions plus values derived from literature and a verification that is based on energy balance rules; and the MatLab code is verified by checking for possible errors, but is not completely validated. Originality/value The main value of the work is that the presented methodology behind the tool is generally applicable and implementable in other models.

Leadership where there’s a will

2014 ◽  
Vol 30 (10) ◽  
pp. 29-31
Keyword(s):  
Energy Balance ◽  
Energy Management ◽  
Design Methodology ◽  
Reading Time ◽  
Positive Impact ◽  
Mental Practice ◽  
Content Type ◽  
Pertinent Information ◽  
Time And Energy ◽  
Practical Implications

Purpose – This paper aims to review the latest management developments across the globe and pinpoint practical implications from cutting-edge research and case studies. Design/methodology/approach – This briefing is prepared by an independent writer who adds personal impartial comments and places the articles in context. Findings – Willpower governs acts of leadership. It is a capability that has been found to be genetic, but which also is possible to develop by raised awareness, disciplined practice and extending one’s comfort zones by exposing oneself to challenges. Willpower is a mental capability, and if leaders develop their ability to focus on their time and energy management, and become more aware of their feelings, they may improve their willpower. Additionally, their energy balance matters: taking care of basics including paying attention to nutrition and to resting, as well as taking up some form of physical/mental practice may have a positive impact on a leader’s willpower. Practical implications – The paper provides strategic insights and practical thinking that have influenced some of the world’s leading organizations. Originality/value – The briefing saves busy executives and researchers hours of reading time by selecting only the very best, most pertinent information and presenting it in a condensed and easy-to-digest format.

Getting innovations out of interactions in the public procurement context

2020 ◽  
Vol 35 (12) ◽  
pp. 2051-2065 ◽  
Author(s):  
Lisa Melander ◽  
Ala Pazirandeh Arvidsson
Keyword(s):  
Public Sector ◽  
Business Model ◽  
Design Methodology ◽  
Public Procurement ◽  
Business Model Innovation ◽  
Structured Interviews ◽  
Demand And Supply ◽  
Content Type ◽  
The Public ◽  
Product Service

Purpose The purpose of this paper is to discuss how a seller can use interactions to respond to public procurement needs for innovation when the buying side is restricted by public procurement regulations. Design/methodology/approach The authors collected data using qualitative semi-structured interviews of different empirical examples, in which private–public interactions of four different high-technological products are studied. Two products belong to the defence industry and two to the civil industry. Findings The findings point to three types of innovations in public procurement: product, service and business model. The empirical examples further indicate, as suggested in previous studies, that innovation is hindered by regulations that limit interaction between suppliers and the public. In addition, the empirical examples indicate that firms mobilize actors in their network when the buyer is restricted in regard to interaction. The findings also add to the IMP literature by comparing interactions in the three types of innovations in the public procurement context. Originality/value Public procurement is an area where innovations are lagging behind, compared with private procurement. Research points to limited interaction between actors as an obstacle to innovation in public sector collaborations. This paper extends the literature on how organizations interact in the setting of public procurement. The authors identify demand and supply triggers for three types of innovations: product, service and business model innovation.

Contagions in interconnected power markets

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Rangga Handika
Keyword(s):  
High Risk ◽  
Design Methodology ◽  
Multinomial Logit ◽  
Power Markets ◽  
Demand And Supply ◽  
Content Type ◽  
Market Participants ◽  
Alternative Approach ◽  
Contagion Risk

PurposeThis paper offers an alternative approach to assessing contagions in price and load in the Australian interconnected power markets. This approach enabled us to identify a high-risk region and assess the direction of contagions from both buyers' and sellers' perspectives.Design/methodology/approachThe author used a multinomial logit method to measure contagions. Having identified the exceedance and coexceedances, the author estimated the multinomial logit coefficients of the covariates explaining the probability of a certain number of coexceedances.FindingsMarket participants should recognize the presence of contagion risk and scrutinize price and load dynamics in the NSW and VIC regions to anticipate any simultaneous extreme changes. Regulators need to stabilize the demand and supply sides in those regions to minimize any possible contagions.Originality/valueThis paper presents a pioneering study investigating contagion in the Australian interconnected power markets.

Modeling the enablers of sourcing risks faced by startups in COVID-19 era

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Aswathy Sreenivasan ◽  
M. Suresh
Keyword(s):  
Literature Review ◽  
Design Methodology ◽  
The Other ◽  
Interpretive Structural Modeling ◽  
Demand And Supply ◽  
Content Type ◽  
Expert Opinions ◽  
Formidable Challenge ◽  
Supplier Risk ◽  
Practical Implications

Purpose Startups across all sectors are affected by the COVID-19 pandemic and are facing a formidable challenge in terms of marketing and operations. Most of the startups have experienced a downturn in demand and supply due to COVID-19 led disturbances in sourcing networks. This paper aims to identify, analyze and categorize the significant risks influencing sourcing operations in startups during the COVID-19 era in India, using the total interpretive structural modeling (TISM) approach. Design/methodology/approach Eight enablers were identified through literature review and expert opinions from various startups in India. This study adopted the TISM approach to analyze the inter-relationships between the enablers. Multiplication Applied to Classification (MICMAC) analysis was used to rank the sourcing risk enablers and classify them as autonomous, independent, linkage and dependent enablers. Findings The results indicate “insufficient fund” as the most critical enabler. Network issues and employee flexibility risk were among the other critical enablers that have a high driving power. Supplier risk, quality risk and demand risk were found to have highly dependent on other enablers for implementation. Research limitations/implications This study mainly focuses on the sourcing risks in startup operations in India. This study can be extended to many other countries. Practical implications This study will help startup industry managers and practitioners understand the interactions of enablers and identify critical enablers to mitigate risks in startup sourcing operations in the COVID-19 era. Originality/value The present study identifies the sourcing risk enablers in the COVID-19 era. It is the first attempt to analyze the interrelationship among sourcing risks in startups using the TISM approach.

Construction by Contour Crafting using sulfur concrete with planetary applications

2016 ◽  
Vol 22 (5) ◽  
pp. 848-856 ◽  
Author(s):  
Behrokh Khoshnevis ◽  
Xiao Yuan ◽  
Behnam Zahiri ◽  
Jing Zhang ◽  
Bin Xia
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Simulation Model ◽  
Design Methodology ◽  
Construction Material ◽  
Construction Process ◽  
Element Analysis ◽  
Content Type ◽  
Contour Crafting ◽  
Finite Element Analysis Simulation

Purpose This paper aims to report on the experiments with the Contour Crafting Automated Construction process using sulfur concrete as the choice of construction material. Design/methodology/approach Several experiments have been performed at centimeter and meter scales. A finite element analysis simulation model for the behavior of sulfur concrete-based structures has been developed. Experimental results were compared with the results of simulation. Findings Sulfur concrete has numerous terrestrial applications and is potentially an ideal construction material for planetary construction. Originality/value Experimental samples of sulfur concrete were fabricated using a novel mixer/extrusion system. The mechanism was proven to be durable and stable after more than 500 h of work.

scholarly journals Is your Brexit supply chain resilient enough? The British footwear manufacturers’ perspective

2017 ◽  
Vol 33 (11) ◽  
pp. 34-36 ◽  
Author(s):  
Roman Safonovs ◽  
Arvind Upadhyay
Keyword(s):  
Supply Chain ◽  
Product Life Cycle ◽  
Design Methodology ◽  
Reading Time ◽  
Demand And Supply ◽  
Content Type ◽  
On Demand ◽  
Pertinent Information ◽  
Key Aspects ◽  
Practical Implications

Purpose This paper aims to review the latest management developments across the globe and pinpoint practical implications from cutting-edge research and case studies. Design/methodology/approach This briefing is prepared by an independent writer who adds their own impartial comments and places the articles in context. Findings Authors have analyzed operations of major fashion operators, interviewed business experts with the intention to support small to mid-sized enterprises. Their first-ever-in-its-kind projects can be a guide for industry players to follow when seeking ways in which to increase their competitiveness. Some of the key aspects authors have focused on their project are as follows: a limited number of possible supply chain strategies companies can deploy, e.g. based on demand/supply predictability, various opportunities for so-called postponement strategies and pragmatic ways of matching demand and supply along the product life cycle. All is supported with a first hand and up-to-date examples of industry players. Practical implications The paper provides strategic insights and practical thinking that have influenced some of the world’s leading organizations. Originality/value The briefing saves busy executives and researchers hours of reading time by selecting only the very best, most pertinent information and presenting it in a condensed and easy-to-digest format.

Framework for the optimization of online computable models

2014 ◽  
Vol 33 (3) ◽  
pp. 745-758 ◽  
Author(s):  
Benoit Delinchant ◽  
Frédéric Wurtz ◽  
João Vasconcelos ◽  
Jean-Louis Coulomb
Keyword(s):  
Simulation Model ◽  
Web Service ◽  
Optimization Algorithm ◽  
Design Methodology ◽  
Optimization Algorithms ◽  
Software Component ◽  
The Internet ◽  
Content Type ◽  
Optimization Framework

Purpose – The purpose of this paper is to make easily accessible models to test and compare the optimization algorithms we develop. Design/methodology/approach – For this, the paper proposes an optimization framework based on software component, web service, and plugin to exploit these models in different environments. Findings – The paper illustrates the discussion with optimizations in Matlab™ and R (www.r-project.org) of a transformer described and exploitable from the internet. Originality/value – The originality is to make easy implementation of simulation model and optimization algorithm coupling using software component, web service, and plugin.

Age-based maintenance for a fleet of haul trucks

2018 ◽  
Vol 24 (4) ◽  
pp. 511-528 ◽  
Author(s):  
Patarawan Chaowasakoo ◽  
Heikki Seppälä ◽  
Heikki Koivo
Keyword(s):  
Simulation Model ◽  
Design Methodology ◽  
Cost Control ◽  
Open Pit Mine ◽  
Open Pit ◽  
Total Production ◽  
Content Type

Purpose The most costly part in an open-pit mine is the transportation of material out of the mine. The efficiency of the truck-and-shovel fleet plays a major role in cost control. The paper aims to discuss these issues. Design/methodology/approach The truck dispatching simulation model with consideration of age-based maintenance is proposed. Findings This paper underlines an impact of truck dispatching decisions and reveals remarkable differences in the total production under different approaches of operational availability. Additionally, the simulated results introduce an effective scheduled maintenance for different truck age levels. Originality/value The approach is based on a case study taking into account the stochastic equipment behavior and environment in a real open-pit mine. This approach can be used more generally in situations in which truck fleets are used to transport material.

Aircraft test of engineered material arresting system

2018 ◽  
Vol 90 (1) ◽  
pp. 229-236
Author(s):  
Hong-Yu Yao ◽  
Xiang-Jun Kong ◽  
Ya-Jie Shi ◽  
Xian-Bo Xiao ◽  
Ning-Ning Le
Keyword(s):  
Simulation Model ◽  
System Design ◽  
Design Methodology ◽  
Field Tests ◽  
Test Results ◽  
Practical Application ◽  
Core Component ◽  
Content Type ◽  
Model Aircraft ◽  
Test Verification

Purpose Engineered material arresting systems (EMASs) are dedicated to stopping aircraft that overrun the runway before they enter dangerous terrain. The system consists of low-strength foamed concretes. The core component of the arresting system design is a reliable simulation model. Aircraft test verification is required before the practical application of the model. This study aims to propose a simulation model for the arresting system design and conducts serial verification tests. Design/methodology/approach Six verification tests were conducted using a Boeing 737 aircraft. The aircraft was equipped with an extra inertia navigation system and a strain gauge system to measure its motion and the forces exerted on the landing gears. The heights of the arrestor beds for these tests were either 240 or 310 mm, and the entering speeds of the aircraft ranged from 23.9 to 60.6 knots. Findings Test results revealed that both the aircraft and the pilots on board were safe after the tests. The maximum transient acceleration experienced by the dummies on board was 2.5 g, which is within the human tolerance. The model exhibited a satisfied accuracy to the field tests, as the calculation errors of the stopping distances were no greater than 7 per cent. Originality/value This study proposes a simulation model for the arresting system design and conducts serial verification tests. The model can be used in EMAS design.

Characterization and modeling of surface defects in EP3D printing

2015 ◽  
Vol 21 (4) ◽  
pp. 402-411 ◽  
Author(s):  
Alvaro Jose Rojas Arciniegas ◽  
Marcos Esterman
Keyword(s):  
Simulation Model ◽  
Design Methodology ◽  
Surface Defects ◽  
System Modeling ◽  
Layer By Layer ◽  
Content Type ◽  
Multiple Parameters ◽  
Dynamic System Modeling ◽  
Identification Techniques ◽  
Practical Implications

Purpose – This paper aims to report an experimental study of how surface defects evolve in EP3D printing as more layers are accumulated and proposes a simulation model for the process. Design/methodology/approach – A series of measurements on the surface roughness were taken layer-by-layer for two 30-layer samples. A model of the process was constructed based on dynamic system modeling, system identification techniques and the analysis of the measurements from the samples. Findings – The transient response of the fuser has a significant impact on the surface of the print. The surface of the EP3D printed part depends heavily on the compliance of the interface. The model developed is able to approximate the behavior of the surface as more layers are deposited. Research limitations/implications – The model requires tuning multiple parameters, especially the compliance threshold for the interface; similar experiments/measurements are needed for any change in the system. Practical implications – The simulation model provides a way to evaluate different process parameters and conditions that otherwise would be difficult and expensive to test. Originality/value – This work provides better understanding into the limitations of EP3D printing process and provides a tool to find countermeasures to achieve successful EP3D prints.

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