Probable maximum loss of a pipe network due to earthquakes: a case study in Iloilo city, Philippines

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Samantha Louise N. Jarder ◽  
Lessandro Estelito O. Garciano ◽  
Osamu Maruyama
Keyword(s):  
Historical Data ◽  
Distribution Networks ◽  
Content Type ◽  
Earthquake Scenarios ◽  
Maximum Loss ◽  
Probable Maximum Loss ◽  
Liquefaction Hazard ◽  
Pipeline Systems ◽  
Damages And Losses

Purpose Buried structures like pipeline systems or water distribution networks (WDN) are vulnerable to seismic activities and the risk of damages increases when there is liquefaction. This paper aims to propose a methodology on how to determine the probable maximum loss (PML) on pipeline systems when earthquakes and liquefaction occur in future scenarios. Design/methodology/approach The paper used historical data and presents a case study on how the methodology to estimate the PML was used. The estimation is analytic and relied on simulations to determine the seismic and liquefaction hazard in the study area. Statistical and numerical analysis was used to estimate the damages and losses. Findings The output shows the PML of a WDN at different earthquake scenarios. It also shows a comparison between the damages and losses of diameter sizes of the pipes. Research limitations/implications In this paper, the damages behaved independently in one area, and correlation was not considered. Practical implications This PML methodology can aid in pre-disaster planning to prepare for seismic countermeasures risk transfer such as insurance to reduce the loss. Originality/value This paper shows a methodology and example on how to estimate the damages and PMLs of an existing WDN of a projected earthquake and liquefaction hazard based on historical data.

Optimal overcurrent relay coordination in distribution network based on Lightning Flash Algorithm

2018 ◽  
Vol 35 (3) ◽  
pp. 1140-1160 ◽  
Author(s):  
Mostafa Kheshti ◽  
Xiaoning Kang
Keyword(s):  
Distribution System ◽  
Distribution Network ◽  
Distribution Networks ◽  
Lightning Flash ◽  
Content Type ◽  
Lightning Strikes ◽  
Relay Coordination ◽  
Cloud To Ground Lightning ◽  
Practical Implications

Purpose Distribution network protection is a complicated problem and mal-operation of the protective relays due to false settings make the operation of the network unreliable. Besides, obtaining proper settings could be very complicated. This paper aims to discuss an innovative evolutionary Lightning Flash Algorithm (LFA) which is developed for solving the relay coordination problems in distribution networks. The proposed method is inspired from the movements of cloud to ground lightning strikes in a thunderstorm phenomenon. LFA is applied on three case study systems including ring, interconnected and radial distribution networks. The power flow analysis is performed in Digsilent Power Factory software; then the collected data are sent to MATLAB software for optimization process. The proposed algorithm provides optimum time multiplier setting and plug setting of all digital overcurrent relays in each system. The results are compared with other methods such as particle swarm optimization and genetic algorithm. The result comparisons demonstrate that the proposed LFA can successfully obtain proper relay settings in distribution networks with faster speed of convergence and lower total operation time of relays. Also, it shows the superiority and effectiveness of this method against other algorithms. Design/methodology/approach A novel LFA is designed based on the movements of cloud to ground lightning strikes in a thunderstorm. This method is used to optimally adjust the time multiplier setting and plug setting of the relays in distribution system to provide a proper coordination scheme. Findings The proposed algorithm was tested on three case study systems, and the results were compared with other methods. The results confirmed that the proposed method could optimally adjust the relay settings in the electric distribution system to provide a proper protection scheme. Practical implications The practical implications can be conducted on distribution networks. The studies provided in this paper approve the practical application of the proposed method in providing proper relay protection in real power system. Originality/value This paper proposes a new evolutionary method derived from the movements of cloud to ground lightning strikes in thunderstorm. The proposed method can be used as an optimization toolbox to solve complex optimization problems in practical engineering systems.

Aligning financial and functional equivalent depreciations rates of building assets

2019 ◽  
Vol 27 (2) ◽  
pp. 441-457 ◽  
Author(s):  
Filipa Salvado ◽  
Nuno Almeida ◽  
Alvaro Vale e Azevedo
Keyword(s):  
Life Cycle ◽  
Historical Data ◽  
Life Cycle Management ◽  
Life Cycle Thinking ◽  
School Building ◽  
Content Type ◽  
Functional Equivalent ◽  
Useful Life ◽  
The Impact

Purpose Both financial and non-financial functions are imbedded in the life-cycle management activities of building assets. These functions provide relevant information for the establishment of operational and maintenance strategies and for decision-making processes related with the timing of major repairs, replacements and rehabilitations. The purpose of this paper is to focus on improving the alignment of financial and non-financial functions related to the recognition that the service potential of buildings should be appropriately funded as it is consumed over its life cycle. Design/methodology/approach Authors undertake an analysis of depreciation rates used to accommodate a systematic allocation of the depreciable amount of building assets over its useful life. Different depreciation approaches and calculation methods are explored. A case study of a school building portfolio is used to debate situations of misalignment of financial and non-financial depreciation rates. Data mining methods including decision tree and clustering are used to predict equivalent functional depreciation rates of buildings system and subsystems and promote an enhanced alignment with regulated financial depreciation rates toward an optimized life-cycle management of the school building portfolio. Findings Historical data show the relevance of considering technical and functional characteristics of the building system and their subsystems (landscaping; structure; external elevations and roofs; interior divisions; and services and equipment) when determining depreciation rates for the building assets The case study showed a misalignment of equivalent functional and financial depreciation rates used in the life-cycle management activities of the school building portfolio ranging between 1/1.26 for external elevations and roofs and 1/5.21 for landscaping. Originality/value Buildings initial technical and functional attributes are affected with its wear, aging or decay, causing loss of value until they reach end-of-life. This paper demonstrates the impact of the different interpretations of the concept of useful life and the subsequent misalignment that it generates between financial functions based on financial depreciation rates and non-financial functions based on historical data and the functional equivalent (technical and functional) depreciation rates. Economic data of 158 public school buildings constructed in Portugal since the 1940s, that sound life-cycle thinking enhances the alignment of both financial and non-financial functions.

scholarly journals Driving impact through base of the pyramid distribution models

2019 ◽  
Vol 49 (5) ◽  
pp. 492-513 ◽  
Author(s):  
Valeria Varga ◽  
Eugenia Rosca
Keyword(s):  
Supply Chains ◽  
Social Impact ◽  
Distribution Networks ◽  
Base Of The Pyramid ◽  
Distribution Models ◽  
Intermediary Organization ◽  
Content Type ◽  
Bop Markets ◽  
Embedded Case Study

Purpose The purpose of this paper is to answer the following research question: how can intermediaries contribute to social impact creation through their interventions at different levels of distribution networks in the base of the pyramid (BoP) markets? Design/methodology/approach The paper adopts an embedded case study of an intermediary organization. The analysis focuses on the intervention of the intermediary on the distribution stages of supply chains in four different projects in the food sector in Ethiopia, Benin, Nigeria and Bangladesh. Findings The embedded case study reveals essential formal and informal roles undertaken by the intermediary organization to develop decentralized distribution networks based on local micro-entrepreneurs. The study proposes that efforts undertaken by the intermediaries toward knowledge sharing and capacity building among partners can enable the adoption of pro-poor strategies across the supply chain. Moreover, hybrid intermediaries can act as “guardians” of the mutual value creation approach since one of their key roles is to advocate the needs of the BoP. Research limitations/implications Important implications for improving nutrition and food security in the BoP markets are developed based on the empirical findings. The findings open avenues for further research into the antecedents of retention rates in distribution networks based on local micro-entrepreneurs. Practical implications Findings have implications for different types of BoP initiatives by highlighting how intermediary organizations intervene to develop distribution models with a special focus on social impact. Originality/value This paper fills an important research gap by discussing social impact aspects in BoP supply chains by adopting the perspective of intermediary organizations.

Cybersecurity economics – balancing operational security spending

2019 ◽  
Vol 32 (5) ◽  
pp. 1318-1342
Author(s):  
Stale Ekelund ◽  
Zilia Iskoujina
Keyword(s):  
Value At Risk ◽  
Historical Data ◽  
Probability Distributions ◽  
Optimal Investment ◽  
Data Set ◽  
Security Investment ◽  
Content Type ◽  
Normal Probability Distribution ◽  
Risk Cost

Purpose The purpose of this paper is to demonstrate how to find the optimal investment level in protecting an organisation’s assets. Design/methodology/approach This study integrates a case study of an international financial organisation with various methods and theories in security economics and mathematics, such as value-at-risk (VaR), Monte Carlo simulation, exponential and Poisson probability distributions. Thereby it combines theory and empirical findings to establish a new approach to determining optimal security investment levels. Findings The results indicate that optimal security investment levels can be found through computer simulation with historical incident data to find VaR. By combining various scenarios, the convex graph of the risk cost function has been plotted, where the minimum of the graph represents the optimal invest level for an asset. Research limitations/implications The limitations of the research include a modest number of loss observations from one case study, and the use of normal probability distribution. The approach has limitations where there are no historical data available or the data has zero losses. These areas should undergo further research including larger data set of losses and exploring other probability distributions. Practical implications The results can be used by leading business practitioners to assist them with decision making on investment to the increased protection of an asset. Originality/value The originality of this research is in its new way of combining theories with historical data to create methods to measure theoretical and empirical strength of a control (or set of controls) and translating it to loss probabilities and loss sizes.

Managing distribution networks in emerging markets. Evidence from the furniture sector

2015 ◽  
Vol 27 (6) ◽  
pp. 617-637 ◽  
Author(s):  
Guido Bortoluzzi ◽  
Maria Chiarvesio ◽  
Raffaella Tabacco
Keyword(s):  
Emerging Markets ◽  
Design Methodology ◽  
Distribution Network ◽  
Distribution Networks ◽  
Local Conditions ◽  
Content Type ◽  
Study Approach ◽  
Managerial Implications ◽  
Set Up

Purpose – This paper aims to examine how three firms set up distribution networks in China and India. The authors highlight the criticalities in this process and the modifications necessary to adapt the firms’ distribution networks to the local conditions of both markets. Firms entering emerging markets (EMs) must deal with specific business and environmental conditions that can jeopardise their ability to succeed. The establishment of a proper distribution network is among the most pressing priorities for entering firms. Design/methodology/approach – The case study approach was used to analyse three European firms in the furniture sector. Findings – The results show that several adaptations of already-tested solutions were necessary to cope with the specificities of both markets. Such adaptations differently involved the three layers that form the firms’ distribution network: actors, activities and resources. Theoretical and managerial implications are derived from the results. Research limitations/implications – This paper considers only three firms, which belong to the same sector and target a similar market segment (the high-end market). Therefore, the conclusions can be generalised only under certain conditions. Originality/value – This paper contributes to the development of international marketing literature by specifically studying distribution networks in EM contexts.

Teaching Computer Based Historical Data Analysis

1994 ◽  
Vol 6 (1) ◽  
pp. 52-58 ◽  
Author(s):  
Charles Anderson ◽  
Robert J. Morris
Keyword(s):  
Data Analysis ◽  
Social History ◽  
Historical Data ◽  
Good Practice ◽  
Computer Assisted ◽  
Historical Data Analysis ◽  
University Of Edinburgh ◽  
Computer Based ◽  
The University

A case study ofa third year course in the Department of Economic and Social History in the University of Edinburgh isusedto considerandhighlightaspects of good practice in the teaching of computer-assisted historical data analysis.

A Case Study on the Un-Used Capacity Assessment Using Time Driven Activity Based Costing for Magnetic Components

2020 ◽  
Vol 6 (1) ◽  
pp. 18-39
Author(s):  
Areena Zaini ◽  
Haryantie Kamil ◽  
Mohd Yazid Abu
Keyword(s):  
Historical Data ◽  
Manufacturing Sector ◽  
Type I ◽  
Activity Based Costing ◽  
Cost Rate ◽  
Continuous Innovation ◽  
Magnetic Components ◽  
Alignment Process ◽  
Capacity Cost

The Electrical & Electronic (E&E) company is one of Malaysia’s leading industries that has 24.5% in manufacturing sector production. With a continuous innovation of E&E company, the current costing being used is hardly to access the complete activities with variations required for each workstation to measure the un-used capacity in term of resources and cost. The objective of this work is to develop a new costing structure using time-driven activity-based costing (TDABC) at . This data collection was obtained at E&E company located at Kuantan, Pahang that focusing on magnetic component. The historical data was considered in 2018. TDABC is used to measure the un-used capacity by constructing the time equation and capacity cost rate. This work found three conditions of un-used capacity. Type I is pessimistic situation whereby according to winding toroid core, the un-used capacity of time and cost are -14820 hours and -MYR2.60 respectively. It means the system must sacrifice the time and cost more than actual apportionment. Type II is most likely situation whereby according to assembly process, the un-used capacity of time and cost are 7400 hours and MYR201575.45 respectively. It means the system minimize the time and cost which close to fully utilize from the actual apportionment. Type III is optimistic situation whereby according to alignment process, the un-used capacity of time and cost are 4120 hours and MYR289217.15 respectively. It means the system used small amount of cost and time from the actual apportionment.

Factors Influencing Customer’s Retail Chain Store Brand Choice Intention: Empirical Study of Circle K Stores in Hanoi

2020 ◽  
Vol 36 (4) ◽  
Author(s):  
Nguyen Thu Ha ◽  
Nguyen Thi Thanh Huyen
Keyword(s):  
Brand Choice ◽  
Distribution Networks ◽  
Analytical Framework ◽  
Store Brand ◽  
Chain Store ◽  
Retail Chain ◽  
Five Elements ◽  
Relationship Of ◽  
The Relationship

The retail market in Vietnam continues to grow with the entry of foreign retail brands and the strong rise of domestic businesses in expanding distribution networks and conquering consumer confidence. The appearance of more retail brands has created a fiercely competitive market. Based on the outcomes of previous research results on brand choice intention combined with a customer survey, the paper proposes an analytical framework and scales to examine the relationship of five elements including store image, price perception, risk perception, brand attitudes, brand awareness and retail brand choice intention with a case study of the Hanoi-based Circle K convenience store chain. These five elements are the precondition for retail businesses to develop their brands so as to attract customers.

Using the private finance initiative for energy efficiency projects at the urban scale

2016 ◽  
Vol 10 (1) ◽  
pp. 99-117 ◽  
Author(s):  
Alberto De Marco ◽  
Giulio Mangano ◽  
Fania Valeria Michelucci ◽  
Giovanni Zenezini
Keyword(s):  
Energy Efficiency ◽  
Urban Areas ◽  
Light Emitting Diode ◽  
Project Finance ◽  
Private Finance Initiative ◽  
Content Type ◽  
Light Emitting ◽  
Alternate Forms ◽  
Private Investors

Purpose – The purpose of this paper is to suggest the usage of the project finance (PF) scheme as a suitable mechanism to fund energy efficiency projects at the urban scale and present its advantages and adoption barriers. Design/methodology/approach – A case study is developed to renew the traffic lighting system of an Italian town via replacement of the old lamps with new light-emitting diode (LED) technology. Several partners are involved in the case project to construct a viable PF arrangement. Findings – The case study presents the viability of the proposed PF scheme that provides for acceptable financial returns and bankability. However, it also shows that the need for short concession periods may call for a public contribution to the initial funding to make the project more attractive to private investors. Practical implications – This case study is a useful guideline for governments and promoters to using the PF arrangement to fund energy efficiency investments in urban settings. It helps designing an appropriate PF scheme and understanding the advantages of PF to reduce risk and, consequently, increase the debt leverage and profitability of energy efficiency projects. Originality/value – This paper contributes to bridging the gap about the lack of works addressing the implementation of the PF mechanism in the energy efficiency sector in urban areas. The importance of this paper is also associated with the shortage of traditional public finance faced by many cities that forces to seek for alternate forms of financing.

A systematic literature review of healthcare supply chain and implications of future research

2019 ◽  
Vol 13 (4) ◽  
pp. 405-435 ◽  
Author(s):  
Anuj Dixit ◽  
Srikanta Routroy ◽  
Sunil Kumar Dubey
Keyword(s):  
Supply Chain ◽  
Literature Review ◽  
Inventory Management ◽  
Cold Chain ◽  
Future Research ◽  
Research Papers ◽  
Content Type ◽  
Drug Manufacturing ◽  
Customer Training

Purpose This paper aims to review the healthcare supply chain (HSC) literature along various areas and to find out the gap in it. Design/methodology/approach In total, 143 research papers were reviewed during 1996-2017. A critical review was carried out in various dimensions such as research methodologies/data collection method (empirical, case study and literature review) and inquiry mode of research methodology (qualitative, quantitative and mixed), country-specific, targeted area, research aim and year of publication. Findings Supply chain (SC) operations, performance measurement, inventory management, lean and agile operation, and use of information technology were well studied and analyzed, however, employee and customer training, tracking and visibility of medicines, cold chain management, human resource practices, risk management and waste management are felt to be important areas but not much attention were made in this direction. Research limitations/implications Mainly drug and vaccine SC were considered in current study of HSC while SC along healthcare equipment and machine, hospitality and drug manufacturing related papers were excluded in this study. Practical implications This literature review has recognized and analyzed various issues relevant to HSC and shows the direction for future research to develop an efficient and effective HSC. Originality/value The insight of various aspects of HSC was explored in general for better and deeper understanding of it for designing of an efficient and competent HSC. The outcomes of the study may form a basis to decide direction of future research.

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