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Articles 2611 - 2640 of 4349
Full-Text Articles in Business
Transport Items And Physical Internet Handling Boxes: A Comparison Framework Across Supply Chains, Eric Ballot, Benoit Montreuil
Transport Items And Physical Internet Handling Boxes: A Comparison Framework Across Supply Chains, Eric Ballot, Benoit Montreuil
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
Pallets, cardboard boxes, and plastic crates are widely used tools to operate supply chains. As such they have many impacts on handling effort, shipment protection, transport mean utilization as well as repositioning and recycling efforts and they represent billions of assets spread all over the world. The historical and local origins of the designs and the sharing among many stakeholders do not ensure at all any kind of global optimization. The purpose of this paper is to define and explain a research effort to better measure and evaluate the efficiencies and inefficiencies for supply chain stakeholders for themselves and globally. …
Energy And Cycle Time Efficient Warehouse Design For Autonomous Vehicle-Based Storage And Retrieval System, Banu Yetkin Ekren, Tone Lerher
Energy And Cycle Time Efficient Warehouse Design For Autonomous Vehicle-Based Storage And Retrieval System, Banu Yetkin Ekren, Tone Lerher
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
This study explores the best warehouse design for an autonomous vehicle based storage and retrieval system (AVS/RS) minimizing average energy consumption per transaction and average cycle time per transaction, simultaneously. In the design concept, we consider, rack design in terms of number of bays, number of tiers, number of aisles; number of resources, namely number of autonomous vehicles and lifts and; velocity profiles of lifts and autonomous vehicles in the AVS/RS. We completed 1,296 number of experiments in simulation to obtain Pareto solutions representing the “average energy consumption per transaction” and “average cycle time per transaction” trade-offs based on designs …
Determination Of Cycle Times For Double Deep Storage Systems Using A Dual Capacity Handling Device, Katharina Dorr
Determination Of Cycle Times For Double Deep Storage Systems Using A Dual Capacity Handling Device, Katharina Dorr
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
Double deep storage is an efficient method to improve space utilization in warehouses. Contrary to intuition, it also can be efficient when considering retrieval times, since the aisles of a warehouse with double deep storage may be shorter than comparable warehouses with single deep storage. AS/RS-machines equipped with two load-handling units might further improve the situation, since two storage units (for instance pallets or cases) can be stored and retrieved, effectively allowing quadruple command cycles, bringing in total two storage units into the aisle and retrieving two storage units at the same time. In this paper, we present a method …
A Simulation Model To Evaluate The Layout For Block Stacking Warehouses, Shahab Derhami, Jeffrey S. Smith, Kevin R. Gue
A Simulation Model To Evaluate The Layout For Block Stacking Warehouses, Shahab Derhami, Jeffrey S. Smith, Kevin R. Gue
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
Storing pallets of Stock Keeping Units (SKU's) on top of another in lanes on a warehouse floor is known as block stacking. This storage system is widely used in manufactoring systems and distribution centers. The arrangement of lanes in the layout of this system significantly impacts utilization of the storage space and transportation costs. Existing research that studies the layout for this system focuses exclusively on determining the optimal lane depth with respect to space utilization and ignores transportation costs. In this study, we develop a stimulation model that computes several performance metrics to evaluate both of these objectives for …
A Novel Approach To Analyze Inventory Allocation Decisions In Robotic Mobile Fulfillment Systems, Tim Lamballais, Debjit Roy, M.B.M De Koster
A Novel Approach To Analyze Inventory Allocation Decisions In Robotic Mobile Fulfillment Systems, Tim Lamballais, Debjit Roy, M.B.M De Koster
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
The Robotic Mobile Fulfillment System is a newly developed automated, parts-to-picker material handling system. Storage shelves, also known as inventory pods, are moved by robots between the storage area and the workstations, which means that they can be continually repositioned during operations. This paper develops a queueing model for optimizing three key decision variables: (1) the number of pods per product (2) the ratio of the number of pick to the number of replenishment stations, and (3) the replenishment level per pod. We show that too few or too many pods per product leads to unnecessarily long order throughput times, …
Simulation-Based Energy And Cycle Time Analysis Of Shuttle-Based Storage And Retrieval System, Tone Lerher, Banu Yetkin Ekren, Anil Akpunar
Simulation-Based Energy And Cycle Time Analysis Of Shuttle-Based Storage And Retrieval System, Tone Lerher, Banu Yetkin Ekren, Anil Akpunar
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
This study explores the best warehouse design for shuttle-based storage and retrieval system (SBS/RS) minimizing average energy consumption per transaction and average cycle time per transaction, simultaneously. For that we provided average energy consumption per transaction versus average cycle time per transaction graphs, for different design scenarios of the studied SBS/RS warehouse. In the design concept, we considered, rack design in terms of number of bays, number of tiers, number of aisles, as well as velocity profiles of lifts in the system. We completed 144 number of experiments by simulation to see the trade-offs based on the design scenarios and …
Non-Traditional Aisle Design For A Manufacturing Facility Layout, Dale T. Masel, Dean Marinchek
Non-Traditional Aisle Design For A Manufacturing Facility Layout, Dale T. Masel, Dean Marinchek
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
Methods for designing a facility layout typically assume that the aisles for interdepartmental travel will be parallel to the exterior walls of the facility. However, by putting aisles at an angle to the exterior walls, more direct routes between departments can be created, reducing travel distance. This paper describes a method to create a facility layout that does not have orthogonal aisles and testing of the resulting layouts shows that travel distance is reduced.
Operational-Level Optimization Of Inbound Intralogistics, Hector J. Carlo, Yeiram Martinez
Operational-Level Optimization Of Inbound Intralogistics, Hector J. Carlo, Yeiram Martinez
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
This study is concerned with optimizing inbound operations at distribution centers (DCs), warehouses, and cross-docks with staging areas. The objective of the problem is to minimize the makespan required to move all unit loads from the trailers to the flow racks, and from the flow racks to their respective storage locations. It is assumed that a set of inbound trailers with known composition have been assigned and sequenced to inbound dock doors. The following three inbound logistics decisions are simultaneously considered: i) unloaders’ assignment and scheduling, ii) loads-to-flow rack assignment, and iii) assignment and haulers’ scheduling. In this study we …
Understanding Worker Blocking And The Design Process, Russell D. Meller, Lisa M. Thomas
Understanding Worker Blocking And The Design Process, Russell D. Meller, Lisa M. Thomas
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
Designing a distribution center (DC) is a complex process that consists of answering dozens of interrelated questions. From our perspective, the penultimate question is one of which picking methodology is optimal. To answer this question requires a full evaluation of picking methodologies in terms of their ability to meet the expected throughput requirements of the system. In manual picking systems, as throughput requirements increase, worker interaction and blocking increase as well. This implies that being able to estimate the amount of worker blocking in a system is critical to a design effort. Most of the prior research in this area …
Introducing The Concept Of Hyperconnected Mobile Production, Suzanne Marcotte, Benoit Montreuil
Introducing The Concept Of Hyperconnected Mobile Production, Suzanne Marcotte, Benoit Montreuil
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
Many globalized businesses are trying to cope with growing competition by strategically expanding their dedicated network of production facilities so as to be able to offer and to deliver time and price competitive offers to their clients across the world. In this paper, exploiting Physical Internet principles, we introduce the concept of hyperconnected mobile production that can alternatively enable businesses to dynamically expand and contract as necessary their production capacity in regions worldwide. First, hyperconnected mobile production exploits open fabs from multiple parties readily available in those regions. Second, these fabs are to rely on plug-and-play production modules. These modules …
A High-Density, Puzzle-Based System For Rail-Rail Container Transfers, Kevin Gue
A High-Density, Puzzle-Based System For Rail-Rail Container Transfers, Kevin Gue
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
We describe a high-density, puzzle-based storage and transfer system for containers in a rail-to-rail hub for the Physical Internet. The system uses a new algorithm called GridHub, which is able to transfer items in all four cardinal directions simultaneously within a grid. We show how the GridHub system might be used in a rail-rail transfer hub to transfer containers between one side of the grid and a train.
Logistics Models To Support Order-Fulfillment From The Sea, Jennifer Pazour, Ian Shin
Logistics Models To Support Order-Fulfillment From The Sea, Jennifer Pazour, Ian Shin
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
Sea based logistics use maritime platforms to transfer cargo stored on vessels and delivers them ashore. This chapter describes the motivations and logistical requirements of seabasing. The sea base’s organizational structure, its material handling environment, and the internal cargo flow processes of the T-AKE vessel are described. Three seabasing distribution network scenarios -- Iron Mountain, Skin-to-Skin Replenishment, and Tailored Resupply Packages -- are described and mapped to warehousing and distribution networks, characteristics, and decision problems. Finally, related literature is reviewed and open areas for logistics research to support order fulfillment from the sea are identified.
Omnichannel Business-‐To-‐Consumer Logistics And Supply Chains: Towards Hyperconnected Networks And Facilities, Benoit Montreuil
Omnichannel Business-‐To-‐Consumer Logistics And Supply Chains: Towards Hyperconnected Networks And Facilities, Benoit Montreuil
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
This paper deals with omnichannel business-‐to-‐consumer logistics and supply chains. Its key contribution is the conceptualization of hyperconnected network and facility design options for enabling to meet the challenges toward achieving omnichannel logistics efficiently and sustainably while meeting the timely expectations of clients. These design options exploit key Physical Internet concepts. They encompass the transportation, pickup and delivery of ordered goods, the deployment of products across territories to enable fast response to orders, as well as on-‐demand production of products across networks of facilities while engaging multiple parties. The options range from current practice to prospective ones that are associated …
Maritime Location Decisions For Lng Bunkering Facilities, Reinier C. Schneider, Iris F.A. Vis
Maritime Location Decisions For Lng Bunkering Facilities, Reinier C. Schneider, Iris F.A. Vis
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
Liquefied natural gas (LNG) is one of the upcoming fuels to be used for more sustainable shipping activities in the maritime sector. For a widespread adoption by end-users, a refuelling network requiring capital intensive investments, needs to be in place. From a macro perspective of suppliers of LNG, it makes sense to develop the infrastructure at strategic locations that capture as many vessels and ships as possible. The goal of this research is to develop a facility location model that can contribute to the location selection of LNG facilities in a new fuelling network. The new model will fit the …
Methodology For Choosing An Appropriate Inland Vessels As A Floating Distribution Centers, Andrea Seidlova, David Sourek
Methodology For Choosing An Appropriate Inland Vessels As A Floating Distribution Centers, Andrea Seidlova, David Sourek
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
The primary goal of this paper is to propose a methodology for the choice of an appropriate vessel type under the specific condition of floating distribution center. The right choice of the appropriate type of vessel has a fundamental influence on the long-term success of city logistic projects with water transport. In this paper, we propose a methodology for vessel choice according to its inner layout and technology of handling. The possibility of an application in practice will be defined for each option.
Integrated Versus Sequential Scheduling And Assignment At A Unit Load Cross-Dock, Arpan Rijal, Marco Bijvank, Rene De Koster
Integrated Versus Sequential Scheduling And Assignment At A Unit Load Cross-Dock, Arpan Rijal, Marco Bijvank, Rene De Koster
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
Within a cross-dock, the assignment of trucks to dock-doors and the scheduling of trucks to be processed are two major operational decisions. Conventionally, assignment and scheduling decisions are made sequentially. However, solving the two problems sequentially can lead to sub-optimal solutions because the objectives of the two problems are in conflict with each other. To gain further insights, we create an integrated model which is capable of simultaneously scheduling and assigning trucks at cross-docks. We contrast the integrated model with a sequential model which first schedules trucks for processing and then assigns them to dock-doors. Experiments demonstrate that the integrated …
A Heuristic Approach To Storage System Design With Simultaneous Assignment Of Goods, Tobias Staab, Willibad A. Gunthner
A Heuristic Approach To Storage System Design With Simultaneous Assignment Of Goods, Tobias Staab, Willibad A. Gunthner
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
In the paper at hand, we analyze the planning of manually operated storage systems consisting of different storage areas. When solving design problems like dimensioning or equipment selection, the assignment of goods to storage areas has to be considered. Based on a general model to describe the geometry and performance calculation of a warehouse, we present a heuristic approach to assign goods to storage areas while simultaneously determining the design of the storage areas in a way that generates the lowest running costs. Our approach aims to support planners during the rough planning stage by providing a quick overview of …
Intermodal Hubs In The Physical Internet, Nadeepa Wickramage, Bill Ferrell
Intermodal Hubs In The Physical Internet, Nadeepa Wickramage, Bill Ferrell
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
Distribution of finished goods is currently an effective but inefficient process that consumes significant quantities of fossil fuel to move empty assets. This results in increased costs that are passed to the consumer and unnecessarily increased carbon emissions. The Physical Internet (PI) is focused on shared logistics that could prove to be an important element of next-generation logistics systems. The idea is to store and transport goods in anonymous standard-sized containers so that transportation and warehousing can be efficiently shared by many companies including competitors. If implemented, this idea has the potential of dramatically increasing efficiency thereby reducing fuel consumption …
Analyzing Order Throughput Times In A Milkrun Picking System, J. P. Van Der Gaast, M.B. M. De Koster, Ivo J.B.F. Adan
Analyzing Order Throughput Times In A Milkrun Picking System, J. P. Van Der Gaast, M.B. M. De Koster, Ivo J.B.F. Adan
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
E-commerce fulfillment competition evolves around cheap, speedy, and time-definite delivery. Milkrun order picking systems have proven to be very successful in providing handling speed for a large, but highly variable, number of orders. In this system, an order picker picks orders that arrive in real time during the picking process; by dynamically changing the stops on the picker’s current picking route. The advantage of milkrun picking is that it reduces order picking set-up time and worker travel time compared to conventional batch picking systems. This paper is the first in studying order throughput times of multi-line orders in a milkrun …
A Lagrangian Relaxation For Capacitated Single Allocation P-Hub Median Problem With Multiple Capacity Levels, Ching-Jung Ting, Kuo-Rui Lu
A Lagrangian Relaxation For Capacitated Single Allocation P-Hub Median Problem With Multiple Capacity Levels, Ching-Jung Ting, Kuo-Rui Lu
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
In this paper we consider a capacitated single allocation p-hub median problem with multiple capacity levels (CSApHMPMC) in which the decisions are to determine the location of p hubs and their capacity levels, the single allocation of non-hub nodes to hubs in the logistics network. This problem is formulated as an integer programming model with the objective of minimizing the sum of total transportation cost and fixed cost of the selected p hubs with established capacity levels. A Lagrangian relaxation (LR) approach is proposed to solve the CSApHMPMC. The Lagrangian function that we formulated decomposed the original problem into smaller …
Resolving The Policy Paradox: The Case Of Biofuel Production In Ireland, Alan Gilmer, Mark J. Mcgarrity, Vivienne Byers
Resolving The Policy Paradox: The Case Of Biofuel Production In Ireland, Alan Gilmer, Mark J. Mcgarrity, Vivienne Byers
Articles
Purpose – The purpose of this paper is to determine the status of policy design and policy implementation in the biofuel sector in Ireland. The focus of the work addresses the overarching operational context of the biofuel sector in Ireland and the role of different actors in shaping and resolving inconsistencies in policy outlook and practice. Design/methodology/approach – This study used a qualitative research approach involving a series of semi-structured interviews with members of the relevant sub-groups concerned. This study sought to address two questions – whether current or proposed policy is likely to affect consumption of indigenous biofuel feedstocks …
Main Contractor Selection On Construction Projects When Adapting An Integrated Project Delivery Procurement Strategy Within An Irish Context., Fiacra Mcdonnell
Main Contractor Selection On Construction Projects When Adapting An Integrated Project Delivery Procurement Strategy Within An Irish Context., Fiacra Mcdonnell
Other Resources
The Irish construction industry has experienced turbulent years over the last decade from an economic viewpoint. The industry has tended to be conservative in nature and slow to embrace change. However international influences have exposed Irish construction professionals to new more efficient systems and technologies, which although slow to take hold have started to gain traction within certain sectors of the industry. This study has focussed on the innovative procurement route known as Integrated Project Delivery (IPD), and its facilitator; Building Information Modelling (BIM). The overall aim of this study was to investigate whether Integrated Project Delivery was a viable …
The Relationship Of Corporate Financial Performance And Innovation Among Manufacturing Industries, Charlaine T. Chong, Samantha R. Chua, Ma. Catrina S. Dy, Antonio Miguel E. Villavicencio
The Relationship Of Corporate Financial Performance And Innovation Among Manufacturing Industries, Charlaine T. Chong, Samantha R. Chua, Ma. Catrina S. Dy, Antonio Miguel E. Villavicencio
Angelo King Institute for Economic and Business Studies (AKI)
Innovation is becoming a critical determinant of the survival and advancement of firms. Despite this realization, there is a dearth of literature that tackles the subject matter and its specific role in corporate settings remains vague. Using corporate data on East and Southeast Asian manufacturing firms from 2008 to 2013, this study aims to identify the impact of corporate financial performance on research and development (R&D) expenditure as a measure of innovation. On the whole, the researchers utilized random effects (REM) and fixed effects (FEM) models to establish the relationship between R&D and corporate performance. The researchers, then, identified the …
From Enrollment To Employment: A Dacum Approach To Information Systems And Information Security And Assurance Curriculum Design, Leila Halawi, Wendi M. Kappers, Aaron Glassman
From Enrollment To Employment: A Dacum Approach To Information Systems And Information Security And Assurance Curriculum Design, Leila Halawi, Wendi M. Kappers, Aaron Glassman
Publications
Issues associated with information security are numerous and diverse. Since the majority of organizational actions rely greatly on information and communication technologies, Information Systems (IS) security is now a main concern for firms, governments, institutes, and society as a whole. As a result, a plethora of graduate programs have been created, covering nearly every aspect of IS security. The authors review the current state of the IS industry presented in the literature, and identify a panel of IS experts in which to explore current job skill needs using a “Developing a Curriculum,” DACUM, process to support curriculum design for two …
Improving Cooling Tower Chemistry Control And Cost Savings Through Automation, Ryan Matthew Maxwell
Improving Cooling Tower Chemistry Control And Cost Savings Through Automation, Ryan Matthew Maxwell
Theses and Dissertations
Proper chemistry control of cooling towers reduces corrosion, biological growth, and precipitation of solids. Therefore, improving control can lead to increased equipment life, operating efficiency, and safety. Chemistry of cooling towers is highly dependent on loading, weather, and time. As such, cooling tower chemistry varies day to day and even hour to hour, requiring either continuous controls or large operating bands. Through automation, 24/7 monitoring and control can be achieved, allowing for deliberate operation within tight operating bands. As a direct result of automation water consumption has been reduced by 9.1 million gallons per year, CL-49 use has been reduced …
Mainframe Relevance In Modern It: How A 50+ Year Old Computing Platform Can Still Play A Key Role In Today’S Businesses, Ian Thomas Newcombe
Mainframe Relevance In Modern It: How A 50+ Year Old Computing Platform Can Still Play A Key Role In Today’S Businesses, Ian Thomas Newcombe
Honors Theses and Capstones
No abstract provided.
A Sustainability-Based Project Selection Algorithm: Socio-Technical-Economic Project Selection (Steps) Algorithm, Bharathi Bhattu
A Sustainability-Based Project Selection Algorithm: Socio-Technical-Economic Project Selection (Steps) Algorithm, Bharathi Bhattu
Dissertations, Master's Theses and Master's Reports
Multi-dimensional aspects play a vital role in the task of project-decision making. Environmental effects are to be considered in addition to other technical and non-technical aspects in order to avoid undue environmental damage. This current work introduces a new decision-making algorithm (Socio-Technical-Economic Project Selection or STEPS) that is demonstrated with the use of RCA (recycled concrete aggregate) as riprap for slope stabilization and erosion control which leaches chemical arsenic when in contact with water. Arsenic has long been recognized for its lethal properties. The main intention of introducing this new algorithm is to use sustainability concepts of social, technical, and …
Can You Hack It? Validating Predictors For It Boot Camps, Courtney Gear
Can You Hack It? Validating Predictors For It Boot Camps, Courtney Gear
All Graduate Theses, Dissertations, and Other Capstone Projects
Given the large number of information technology jobs open and lack of qualified individuals to fill them, coding boot camps have sprung up in response to this skill gap by offering a specialized training program in an accelerated format. This fast growth has created a need to measure these training programs and understand their effectiveness. In the present study, a series of analyses examined whether specific or combinations of predictors were valid for training performance in this coding academy. Self-rated, daily efficacy scores were used as outcome variables of training success and correlation results showed a positive relationship with efficacy …
Electricity Sector Reform: Sourcing And Cost Management Of Electricity For Steel Manufacturing In Nigeria, Christopher Ndubuisi Okonkwo
Electricity Sector Reform: Sourcing And Cost Management Of Electricity For Steel Manufacturing In Nigeria, Christopher Ndubuisi Okonkwo
Walden Dissertations and Doctoral Studies
In 2014, Lazard levelized cost of energy analysis model priced diesel powered systems at $0.225 – $0.404/KWh and a range of $0.165 – $0.242/KWh for gas-powered systems. The model gave a range of $0.28 – $0.33/kWh for diesel and a range of $0.14/kWh – $0.16/kW for gas fired. Nigeria has an abundance of gas reserves, but heavy gas flaring by oil companies perpetuates power failure across Nigeria. What has resulted is an unreliable electricity infrastructure and a high cost of alternative energy. The Electricity Power Sector Reform Act of 2005 started the reform process. Guided by decision theory, the purpose …
Strategies To Improve Data Quality For Forecasting Repairable Spare Parts, Uyi Harrison Eguasa
Strategies To Improve Data Quality For Forecasting Repairable Spare Parts, Uyi Harrison Eguasa
Walden Dissertations and Doctoral Studies
Poor input data quality used in repairable spare parts forecasting by aerospace small and midsize enterprises (SME) suppliers results in poor inventory practices that manifest into higher costs and critical supply shortage risks. Guided by the data quality management (DQM) theory as the conceptual framework, the purpose of this exploratory multiple case study was to identify the key strategies that the aerospace SME repairable spares suppliers use to maximize their input data quality used in forecasting repairable spare parts. The multiple case study comprised of a census sample of 6 forecasting business leaders from aerospace SME repairable spares suppliers located …