bluuebunny/crossref_metadata_2025_split huggingface dataset:
Visual tool to integrate LCA and LCC in the early design stage of housing
Authors: Miyamoto A , Allacker K , De Troyer F 
Published: September 2019

Abstract
Over their whole life cycle, buildings are responsible for high environmental impacts and require critical financial resources. Decisions in the early design phase have a significant impact on both. This study aims to develop a visual decision support tool for architects in order to integrate an environmental and economic life cycle approach for dwellings. To evaluate the environmental impacts of the building design, the tool uses the Belgian LCA method, ‘Environmental Profile of Building Elements’. This method translates 17 environmental indicators in environmental costs by considering the cost to avoid, reduce or compensate the effects to a level that is bearable. The tool allows to combine these life-cycle environmental costs (LCEC) with Life Cycle financial Cost (LCFC). To estimate the operational energy use of the building, the “dynamic Equivalent Heating Degree Day (dEHDD)” method is used. This method allows for fast and relatively accurate heating energy estimations in the early phase, based on a limited number of input data. The tool visualises the results in a graphical way which can be easily understood by architects. Even more, visualisation is seen as a powerful communication tool to share information and ideas with all stakeholders.
Social housing energy retrofitting: Business Model and supporting tools for public administration
Authors: Penna P , Schweigkofler A , Brozzi R , Marcher C , Matt D T 
Published: September 2019

Abstract
High refurbishment costs and uncertainty of the investment payback period account as the main reasons of low rate of energy retrofit of the European building stock. Moreover, assessing energy and economic benefits of energy retrofitting may result difficult e.g. due to the unpredictability of users’ behaviour which may alter the effectiveness of energy refurbishment intervention. This paper deals with the question whether approaches exist, aimed at securing the profitability of energy retrofitting and at creating the market condition to incentivize the energy refurbishment on a large scale. The paper presents the operational tools, developed to support the public administrations along the entire retrofit process, and the Business Model (BM), structured to financially support the refurbishments by the energy cost savings. This tools and the BM has been developed for the South Tyrolean context, to promote the energy retrofit of the social housing building stock of the Autonomous Province of Bolzano. The results presented in this paper are part of the ongoing research project “KlimaKit”, founded by operational programme European Fund for Regional Development of the Autonomous Province of Bolzano EFRD 2014-2020 – Investments in Growth and Employment.
Business-models of gravel, cement and concrete producers in Switzerland and their relevance for resource management and economic development on regional a scale
Authors: Meglin R , Kliem D , Scheidegger A , Kytzia S 
Published: September 2019

Abstract
Traditionally, gravel, cement and concrete producers focus on their role as material or resource suppliers. The higher the material turnover, the higher the economic success. Hence, the business-model conflicts with the societal goal of increased resource efficiency. Driven by stricter regulations, companies started to extend their business models with additional services in waste management and logistics.
In the research project “Co-Evolution of Business Strategies in material and construction industries and public policies” the most relevant business-models of gravel, cement and concrete producers in Switzerland are identified based on case studies of ten different companies. The analysis reveals how these business-models differ with regards to value added, resource consumption and CO2-emissions. To analyse the relevance of the different business-models on regional scale, an assessment model is developed based on Material Flow Analysis. It is used to analyse the value chain of construction minerals in an alpine region and its effect on value added, resource consumption, waste generation and CO2-emissions. A comparison between the results of both analyses – companies scale versus regional scale – reveals how alternative business-models could affect resource management and economic development on a regional scale and which types of business-models accelerate or hinder the transition towards a sustainable built environment. The study will show, that it is essential to identify alternative business models in the building materials industry and understand their impacts on the use of primary and secondary resources.
In this paper, we identify two business models, which, at first glance, seems identical as they produce and sell concrete and gravel, but show that the success of a business model highly depends on the source for raw-materials (gravel pit, river extraction or processing excavated materials with high gravel content), the possibility to landfill excavated material and the resulting effects on resource consumption.
Possible strategies and obstacles in the pathway towards energy transition of residential building stocks in Switzerland
Authors: Flourentzou F 
Published: September 2019

Abstract
The Swiss strategy for energy transition towards a sober energy world targets a 2000 W per capita society in 2050. This objective for an owner of a building stock is translated to a refurbishment of all existing residential buildings to near zero energy buildings, consuming less than 55 kWh/m2 of primary energy for heating with a rhythm reducing the overall energy consumption by an average of 2.6 kWh/m2 until 2050.
The article analyses energy consumption of 10’000 residential buildings in Geneva Canton since 1994 and shows that the target of energy reduction at this rate has been achieved in the period 1994-2016, decreasing from 187 kWh/m2 in 1996 to 134 kWh/m2 in 2016. However, projections for the next 3 decades with the current refurbishment rhythm (0.8-1.5%) and the current real energy performance after deep refurbishment and energy upgrading, show that at this rate and with the performance gap not resolved, the final target will not be achieved.
Based on the analysis of real energy consumption after refurbishment actions on statistically significant building samples and analysing the potential energy refurbishment actions of a 161 buildings stock, we have simulated possible and realistic ways to achieve the 2000 W society target.
Fleet-based LCA applied to the building sector – Environmental and economic analysis of retrofit strategies
Authors: Göswein V , Dinis Silvestre J , Freire F , Habert G 
Published: September 2019

Abstract
CO2 emissions need to be reduced by 40% in 2030 in Portugal as an intermediate target of the Paris Agreement. This challenging goal is expected to be achieved through incentive-based regulations and voluntary actions. This study improves the understanding of renovation strategies to reduce emissions caused by the built environment. A fleet-based Life Cycle Assessment (fb-LCA) is adapted and applied to the building sector. Fb-LCA integrates LCA and a fleet model to describe stocks and flows associated with a class of products over time. The method is tested for a neighbourhood in Lisbon, Portugal. The analysis compares 3 scenarios of dynamic renovation rates for the next 30 years: business as usual, a public economic incentive to renovate, and mandatory renovation. Different technology scenarios including bio-based ones, are compared. Among the latter, alternative material solutions, e.g. insulation cork boards, are emerging, providing carbon sequestration. Results highlight the environmental benefits of bio-based materials considering the temporal profile of renovation activity. Furthermore, the cost and sensitivity analysis help stakeholders to justify retrofit actions from an environmental and economic point of view. The adaptation of a fb-LCA approach proves to be an easy-to-use method to assess technology options and policy scenarios at a neighbourhood scale.
Potential for energy savings in Czech residential building stock by application of a prefabricated mass retrofitting system
Authors: Lupíšek A , Sojková K , Volf M , Hejtmánek P 
Published: September 2019

AbstractBuildings are responsible for a significant share of EU energy consumption. To improve energy efficiency of the building stock, it is needed to significantly increase renovation rates. To overcome actual barriers related to this problem, such as partial and non-systematic renovations, lasting unrest during renovation or time-consuming wet processes, an industrialized construction system using prefabricated modular elements seems to be a possible way. Such system for mass energy retrofitting of residential buildings in Central Europe was developed in H2020 project MORE-CONNECT. The work presented in this article aimed to roughly estimate potential yearly energy savings by applying this new modular retrofitting system on one typology segment of the Czech residential building stock: non-renovated multifamily residential buildings built between 1946 and 1960 with total gross floor area covering over 7 million square meters. The main objective of the research presented in this paper was to make a hypothetic rough estimation of potential yearly energy savings by applying the new modular retrofitting system on a target typology of the Czech residential building stock. According to the calculations, application of proposed retrofitting system on the chosen building type would reduce the total energy consumption in Czech residential buildings by 2.9 % and by 1.8 % compared to energy consumption in all Czech buildings.
Towards a model for circular renovation of the existing building stock: a preliminary study on the potential for CO2 reduction of bio-based insulation materials
Authors: Pittau F , Iannaccone G , Lumia G , Habert G 
Published: September 2019

Abstract
In the context of strategies for mitigating the impacts of climate change within European cities, increasing attention is being paid worldwide to the use of urban green infrastructure which, in addition to the potential for improving the quality of the urban environment, allow significant amounts of CO2 to be removed from the air. However, considering the peculiarities of the dense European cities, most of the available surfaces in urban areas are the perimeter walls of buildings of considerable age that are in urgent need of measures to upgrade their energy performance. Based on this premise, this paper investigates the potential for CO2 storage resulting from the application of energy retrofit solutions using biogenic insulating materials. Starting from the analysis of the demand for insulation materials necessary for the energy requalification of the residential existing building stock in 28 European countries, following the renovation target fixed by EU, the research analyses, through the adoption of a dynamic LCA approach, the environmental benefits of bio-based materials compared to traditional solutions. The use of these materials, especially if they are fast-growing - as the study shows - offers several advantages in terms of climate change mitigation by reducing the energy needs and CO2 emissions of the existing building stock and increasing carbon storage capacity within cities. The results of this study are intended to provide a robust database on which to build a model of circular building renovation that takes into account the environmental long-term effects of measures for increasing energy efficiency of buildings.
Retrofitting strata property - a tool supporting long-term retrofit strategy
Authors: Ehrbar D , Heim D , Mayer A-T , Schwehr P 
Published: September 2019

Abstract
Strata property - ownership of apartments or townhouses consisting of private and commonly owned building components and areas - was established in Switzerland in 1965 and since has become very popular. But, well-needed retrofit work of these buildings is often postponed and long-term retrofit strategies are rarely considered. However, the low retrofit rate must increase to meet the global energy goals. Interviews and workshops with relevant actors showed that missing financial means are not the key issues for the low retrofit rate. Major challenges arise from a broad set of issues, such as difficult processes, unclear responsibility, insufficient communication, missing building information or underestimation of the commonly owned building components. “Luzerner Toolbox” provides eight folders that address the key clusters of challenges. Central to this toolbox are Excel-based tools, which transform accurate technical and financial information into a visual format. An ample diagram illustrates the remaining lifetime of the building parts and a graph relates upcoming retrofit costs and the annual payments into the contingency reserve fund with a forecast of the contingency reserve fund. As such, these tools assists in scheduling appropriate retrofit measures and establishing a balanced financial planning. But, various actors have reported that the retrofit timetable is too complex to be used in management firms. Feasibility studies and further research of their specific needs and work processes are needed to refine the tool accordingly. In a further study, interviews with management firms and architects are conducted to determine the key factors of a useful tool.
The Effect of Competence, Motivation, and Environment on Business Performance of Women Entrepreneurs Running Small and Medium Enterprises in Jakarta
Authors: Simanjuntak M , Sarjono H 
Published: September 2019

Abstract
This research uses a quantitative approach to study the development of women entrepreneurs running small and medium enterprises (SMEs) in the Jakarta and surrounding areas. This research primarily focuses on the relationship between independent variables, namely, competence, motivation and environment and the business performance as the dependent variable. This research is expected to provide an overview for all parties about the development and involvement of women in the economic field, especially in alleviating poverty in Jakarta. This study uses 200 women entrepreneurs running SMEs as the research respondents. The results of this study indicates that there is an influence of competence of 0.288 (low), the motivation of 0.309 (moderate) and environment of 0.292 (low) on the business performance. We suggest that the government increase the competence of women entrepreneurs and provide more favourable regulation to enhance their business performance in the future.
Risk Analysis of Supply Chain Cultivation of JOPER
Authors: Immawan T , Puruhita A , Cahyo W N 
Published: September 2019

Abstract
Joper (Jowo Super) is one kind of high-quality chicken. The demand of this type of chicken is an increasingly popular type of livestock to be developed and is expected to meet market demand for native chicken meat. On the other hand, there are some obstacles experienced by farmers, such as the risk in cultivation. This study aims to identify and analyse the risk event and risk agent that may occur using the House of Risk method. From the research results, 12 risk events and 14 risk agents were found. The result of House of Risk phase 1, it is found that 5 of the 14 risk agents includes in the area of dominant risk agents. Then, the process to identify the priority of mitigation strategies of the risk is performed in the House of Risk phase 2. In this phase, there are 7 risk management mitigation been proposed and prioritised to be applied.
Integration Assessment and Evaluation of Supplier Performance System in Electricity Generation Company
Authors: Musyahidah B , Vanany I 
Published: September 2019

AbstractThe supplier performance system has gained important to assess and evaluate suppliers in order to determine supplier performance level. The assessment and evaluation integration is needed in supplier performance system for the companies that have many branches and unit in order the results of assessment each company’s supplier could be used to evaluate in among branches and units. The case study in this research is the Indonesian electricity generation company that has 34 power plant unit and has approximately 4,000 suppliers. Based on discussion and focus group discussion (FGD) with the case study’s managers, the criteria and sub criteria of supplier performance system including their weight have been determined such as budget, supplier positioning matrix, procurement per period, and blacklist history. AHP approach is used to determine the weight each aspect and indicator. Software based on online platform was developed to support the assessment and evaluation in each branch. Supplier performance system proposed was applied in case study. Based on interviews with the case study’s manager, the supplier performance system proposed has comprehensive aspects and indicators to evaluate each project purchasing order and managers is easier to determine the supplier’s selection and blacklist.
Vehicle Routing Problem with Split Service, Time Window and Intermediate Facility for Municipal Solid Waste Collection in Surabaya City with Ant Colony Optimization Algorithm
Authors: Dayanara D H , Arvitrida N I , Siswanto N 
Published: September 2019

AbstractThe volume of waste production in the Surabaya City from 2013 to 2017 increase in line with the population growth in the Surabaya city. The number of vehicles owned by Dinas Kebersihan dan Ruang Terbuka Hijau is limited so that in satisfying the order from every LPS in Surabaya that must be collect by the compactor, the transportation needs optimization planning. The model for the case of MSW collection in Surabaya City is Vehicle Routing Problem with Split Service, Time Window and Intermediate Facility (VRPSSMTTWIF). The vehicles load from every LPS with deterministic demand and unload to LPA as an intermediate facility in this model. The vehicle will depart from the depot and return to the depot in a state of empty load during operating hours or with time window constraint. The vehicle will do the ritase more than once when not exceed the operational hours. In 1 LPS can be served more than once with the same vehicle or different according to the number of demand. In finding the optimal routes that have a minimum total distance value, this research using the approach methodology, metaheuristic with the ACO algorithm which is expected to be solved with faster computation time. The result is a new recommendation route with a total distance of 4256.7 km. The difference between the existing and recommendation route is 354.4 km by using 35 vehicles. The results of the sensitivity analysis show that with the current DKRTH vehicles, the number of 44 units of compactor is estimated to be able to handle the increasing demand until up to 20%.
Developing Indicators of Green Construction of Green Supply Chain Management in Construction Industry: a Literature Review
Authors: Farida N. , Handayani N.U. , Wibowo M.A. 
Published: September 2019

Abstract
Green construction is a concept in construction to minimize environmental impact so that balancing the environmental capabilities with human life needs for the present and future generations. This concept in line with sustainable construction and lean construction concept. In the Project Life Cycle (PLC), green construction is related to the construction phase. However, accomplishment in this stage cannot be separated with previous stages that are planning and design phases. Therefore, an integrated green concept is needed to assemble the continuity of each stage in PLC thus reducing the fragmented nature of the construction industry. Green Supply Chain Management (GSCM) concern to sustainable practices along the supply chain. Management of materials and information flow, in addition energy consumed and waste generated reduction in every stage makes GSCM worth to considered as a concept to integrated all stages in PLC into a green spirit. This study aims to identify the indicators of green construction concept as part of GSCM. The result of this study is a framework for implementing green construction that consists of four dimensions, 25 elements, and 42 indicators.
A new metaheuristics for solving vehicle routing problem: Partial Comparison Optimization
Authors: Adhi A , Santosa B , Siswanto N 
Published: September 2019

Abstract
Vehicle Routing Problem (VRP) is a problem of selecting shortest route from a depot to serve several nodes by considering transport capacity. In this study, a new metaheuristcs algorithm is proposed to solve VRP in order to achieve optimal solution. This metaheuristics algorithm is Partial Comparison Optimization (PCO). This new optimization algorithm was developed to solve combinatorial optimization problems such as VRP. In this study, PCO was tested to solve the problems that existed in the origin VRP. To prove PCO is a good metaheuristics for solving VRP, several of instances of symmetrical VRP were selected from the VRP library to evaluate its performance. The numerical results obtained from the calculation indicated that the proposed optimization method could achieve results that almost similar with the best-known solutions within a reasonable time calculation. It showed that PCO was a good metaheuristics to solve VRP.
An Analysis of Correlation of the Distances between Turbines in a Turbine Farm with their Power and Cost
Authors: Habiby J S , Triwiyatno A , Andromeda T 
Published: September 2019

Abstract
In Indonesia with the increasing demand of electrical energy, fuel production from coal and crude oil will reach its limitation in a few decades, along with the increase of a number of extreme weather and global warming. Based on that, it is needed to find a solution for the electricity demand by harnessing alternative renewable energies which potentially useable in Indonesia. One of those alternatives is wind energy, which is renewable and can be turned into electricity using a wind turbine. In this thesis, we studied the correlation of distances between turbines in a wind farm with their power and cost. We set wind turbines in several ways by means of distance variation. Then define an objective function, i.e. a function which depends on the power produced and the cost needed in a way such that its value decreases when the power increases or the cost decreases and vice versa. Lastly, we analyse which wind turbine layout gives the minimum value for the objective function.
Single Minute Exchange of Dies as The Solution on Setup Processes Optimization by Decreasing Changeover Time, A Case Study in Automotive Part Industry
Authors: Sugarindra M , Ikhwan M , Suryoputro M R 
Published: September 2019

Abstract
Industrial competition nowadays demanding automotive manufacturers to increase productivity and organise lean production to meet all the targets. The rear axle manufacturer, one of the automotive industry in 2018, experienced production constraints that were unable to meet production targets. The Line Housing F as the object of this research had 9 machines that involved setup time for the changeover process out of 24 machines. The setup process was not being standardized, conducted manually and involved readjustment on the engine jig, which would, causes a long changeover time because the process was repeatedly carried out. This study aimed to optimize setup activities in order to reduce changeover time. The Single Minute Exchange of Dies (SMED) method was one of the applicable tools to reduce change over time, by changing the internal activities into external activities. In the final stage, SMED simplified the jig setting process by changing the jig design on the M16.3 machine and parallelizing the setup and process operations of the machine. The final results improved the 33% overall changeover time, from 58.36 to 39.22 minutes.