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A Novel Autonomous Vehicle-Based Storage And Retrieval System With Movable Lifts, Banu Yetkin Ekren, Tone Lerher, Boris Jerman

International Material Handling Research Colloquium

No abstract provided.

How Reshoring Impacts Economy And Transportation Logistics- A Us Perspective, Md Sarder

16th IMHRC Proceedings (Dresden, Germany- 2023)

Reshoring is a relatively new trend across the world, particularly in developed nations like the US and European countries. Its impact on the economy and transportation and logistics is expected to be significant. However, there is a lack of research on the reasons behind companies' decision to reshore, the major players involved, the economic implications, and how to align transportation for maximum benefit. To address this gap, a study was conducted using location quotients, which compare the economic composition of smaller areas to a base geographical area. Two datasets were used: the US Census Bureau's County Business Patterns employment dataset …

5g Opportunities In Warehousing, Roshan George, Natalie S. Cherbaka, Kimberly Ellis

16th IMHRC Proceedings (Dresden, Germany- 2023)

As capabilities of fifth generation wireless technology (5G) improve, adoption will go beyond current urban cellular networks into industrial settings enabling the IoT landscape. 5G primarily delivers value by enhancing mobile broadband through ultra-reliable, low-latency signals and massive machine-type communications. With the concurrent development of 5G and industrial automation, replacing Wi-Fi and LTE services with 5G networks offers an opportunity to enhance scheduling, latency, jitters, and redundancy in demanding applications. Additionally, the equipment redesigns and upgrades to operate in 5G will pave the way for innovation in operational strategies previously constrained by network capabilities. In this paper, we consider the …

Concepts For The Use Of Knowledge-Based Engineering In Intralogistics System Planning, Christian Landschützer, Alexander Ortner-Pichler

16th IMHRC Proceedings (Dresden, Germany- 2023)

Complex interdependencies of conditions and specifications to be met characterize the planning process of intralogistics systems. In the planning process, a large source of existing knowledge in the form of various 3D CAD machine designs or information from PDM systems is only sparsely used. A newly developed knowledge-based engineering methodology to be presented shows concepts for formalizing, enriching and using this existing knowledge in order to support the planning of intralogistics plants and thus increase their efficiency. The work presented is rounded off by a methodological process that evaluates the usefulness of using a KBE solution.

Performance Analysis Of Unequal Area Facility Layout Problem When Superimposed By Load Transport And Empty Flow Networks, Ardavan Asef-Vaziri, Cory Taylor

16th IMHRC Proceedings (Dresden, Germany- 2023)

Given the area of the workcenters and the required loaded flow matrix between pairs of workcenters, the unequal facility layout problem (UA-FLP) is concerned with a continuous model for the arrangement of the workcenters under a loaded flow-distance objective function. In UA-FLP models, distances are measured between the centroids of the workcenters on arbitrary bidirectional free rectilinear flow paths. While these assumptions may work for gantry cranes, they are far from reality for vehiclebased material transport systems. In this study, starting from the block layouts obtained under the UA-FLP assumptions, we move towards superimposing them by material transport networks and …

A Novel Autonomous Vehicle-Based Storage And Retrieval System With Movable Lifts, Banu Yetkin Ekren, Tone Lerher, Boris Jerman

16th IMHRC Proceedings (Dresden, Germany- 2023)

This paper presents a novel autonomous vehicle-based storage and retrieval system with movable lifts (AVS/RS/ML) as an alternative automated warehousing technology to tier-captive shuttle-based storage and retrieval systems (SBS/RS). The proposed system aims to provide a cost-effective, highly efficient, and adaptable solution for warehouse operations utilizing automated guided vehicles (AGVs) capable of travelling both inside and outside the warehouse. We simulate and analyse the system's performance based on its initial investment cost, throughput capacity, and average utilization of AGVs and movable lifts (MLs) under different warehouse designs.

Introducing The Central Backup Cellular Manufacturing System (Cbcms), Salah Elaskari, Uday Venkatadri

16th IMHRC Proceedings (Dresden, Germany- 2023)

In this paper, we present a new layout arrangement that we call the central backup cellular manufacturing systems (CBCMS). The CBCMS organization is inspired by the concept of the remainder cell in Group technology (GT) systems where the idea is to allocate products that are not easily partitioned in the parts-machine incidence matrix to the remainder cell through a cell that contains all process capabilities. The fractal cell layout can be thought of as replications of the remainder cell in the GT concept. The GT layout represents an efficient approach under certain static conditions, while the fractal layout represents a …

Sorting With Robots: Where To Drop Off The Parcel?, René De Koster, Yuerong Chen, Bipan Zou, Yeming Yale Gong

16th IMHRC Proceedings (Dresden, Germany- 2023)

This paper presents a method for assigning destinations to drop off points in robotic sorting systems, taking into account robot congestion.

Warehouse Robotization With Wheel.Me Genius: A Puzzle-Based Movable Racks System, Fabio Sgarbossa, Martin Amaral Halseide, Atle Timenes

16th IMHRC Proceedings (Dresden, Germany- 2023)

In this paper, we first introduce a new type of warehouse which combines the properties and operations of puzzle-based storage systems and robotic mobile fulfillment. Thanks to a long-term collaboration between the Logistics 4.0 Lab at NTNU and wheel.me, we have introduced and explored a new configuration called Puzzle-Based Movable Rack (PBMR) system where racks can be moved with autonomous wheels. One additional advantage of such system is that movable racks can move diagonally. We model and analyze the system studying different configurations and showing the impact on density and average cycle time/throughput. We finally introduce potential future research for …

Modeling Post-Disruption Equilibrium For Circular Supply Chains And New Measures For Resilience, Sangwoo Park, Ilaria Giannoccaro, Layek Abdel-Malek

16th IMHRC Proceedings (Dresden, Germany- 2023)

Among concerns on sustainability and environmental protection, there is a growing interest in the adoption of circular supply chains (CSCs). This work introduces a firstcut approach to capturing the resilience of supply chains and their components related to material handling. We develop a methodology for computing the new equilibrium states after disruptions and use this to measure the resilience of circular supply chains. Numerical simulations illustrating our concept are performed on a synthetic toy-example. In addition, we introduce a secondary measure of resilience that encapsulates the transient stages of a supply chain after disruption. This measure is able to highlight …

Robotic Bin-Picking: Benchmarking Robotics Grippers With Modified Ycb Object And Model Set, Tone Lerher, Primož Bencak, Darko Hercog, Boris Jerman, Luka Bizjak

16th IMHRC Proceedings (Dresden, Germany- 2023)

Robotic bin-picking is increasingly important in the order-picking process in intralogistics. However, many aspects of the robotic bin-picking process (object detection, grasping, manipulation) still require the research community's attention. Established methods are used to test robotic grippers, enabling comparability of the research community's results. This study presents a modified YCB Robotic Gripper Assessment Protocol that was used to evaluate the performance of four robotic grippers (two-fingered, vacuum, gecko, and soft gripper). During the testing, 45 objects from the modified YCB Object and Model Set from the packaging categories, tools, small objects, spherical objects, and deformable objects were grasped and manipulated. …

An Efficient Milp Formulation For The Parallel Load Retrieval In Puzzle Based Storage Systems With Simultaneous Load Movements, Yossi Bukchin, Tal Raviv

16th IMHRC Proceedings (Dresden, Germany- 2023)

Puzzle-based storage (PBS) is one of the most spaceefficient types of storage systems. In a PBS unit, loads are stored in a grid of cells, where each cell may be empty or contain a load. A load can move only to adjacent empty cells using four-way conveyors. When loads are requested for retrieval, a sequence of load movements is performed in order to bring them to the input/output (I/O) points of the unit. In this paper, we present a time-expanded-graph based integer-linear-programming (MILP) formulation that aims to minimize the time to retrieve a set of target loads (makespan). Note that …

Designs Of Puzzle Based Storage Systems With Unidimensional Cells, Hector J. Carlo, Andres Blanco

16th IMHRC Proceedings (Dresden, Germany- 2023)

A paradigm for puzzle-based storage systems (PBS) is that all cells have the capacity of transporting loads horizontally and vertically. This research challenges this paradigm by considering unidimensional PBS, where some cells are limited to either horizontal or vertical movements. PBS with some unidimensional cells are referred to as unidimensional PBS. A linear program (LP) formulation is presented to find the optimal load retrieval path using a single-escort in a unidimensional PBS. The LP is solved recursively to understand the tradeoffs of unidimensional designs for a 4×4 system. It is concluded that unidimensional PBS can be designed such that the …

Current Challenges And Approaches In Route Selection Of A Fleet Of Amr, Thorsten Schmidt, Karl-Benedikt Reith, Frank Schulze

16th IMHRC Proceedings (Dresden, Germany- 2023)

With the trend in intralogistics from Automated Guided Vehicles (AGV) to free ranging Autonomous Mobile Robots (AMR), vehicle-based transportation systems further in-crease their flexibility, scalability and performance. However, these benefits come at the cost of an increase in complexity caused by the AMRs’ high degree of freedom, e.g. when it comes to the determination of routes. In addition to manifold approaches to the selection of a global route and the avoidance of local routing con-flicts with other vehicles, this paper discusses the idea of applying a set of offline defined rules. Lowering the AMRs’ degree of free-dom, these rules enable …

Rcs/Rs Under Throughput Investigation, Georg Kartnig Prof., Philipp Trost, Michael Eder

16th IMHRC Proceedings (Dresden, Germany- 2023)

RCS/RS are fully autonomous by robots from above-operated storage systems. The goods are stored in plastic containers stacked on each other and arranged in a block, which enables high storage densities and low space demand concomitant with the need for relocations to access deeper stored containers. E-commerce, pharmaceutical area, food or spare parts trade are typical application fields for those warehouses. A wide range of parameters, such as the number of robots, the filling degree or the stack height, influences the system’s performance. This paper gains insights into the throughput of RCS/R-systems with one operating robot serving one picking station …

A Study On The Correlation Between The Study Habits Of Nursing Students And Perceived Exam Anxiety, Rebecca A. Bracken

Honors College Theses

Anxiety is a concept very familiar to many university students. This especially applies to students who have decided to major in nursing. With the knowledge and experiences that accompany attending nursing school, come a series of rigorous, high-stakes exams. Nationwide, many students share a common struggle to be successful on these exams, which often leads to a sense of anxiety that becomes associated with one's experience during testing, known as test anxiety. A study across multiple baccalaureate nursing school cohorts was completed to determine a correlation between the various methods used by nursing students to prepare for an exam and …

Peeling Away The Taken-For-Grantedness Of Research Subjectivities: Orienting To The Phenomenological, Melissa Freeman, E. Anthony Muhammad

Curriculum, Foundations & Reading: Faculty Publications

Qualitative research is a multidisciplinary field of practice that acknowledges and values the situatedness and subjectivities of the researcher. Therefore, reflexively accounting for one’s subjectivities is a crucial part of a research report. Less discussed is how subjective understandings are historically, culturally, and socially mediated, often challenging researchers’ abilities to orient themselves critically to this self-reflective undertaking. Phenomenology is a philosophical approach investigating how phenomena such as subjectivity are constituted in experience. This makes phenomenology an essential resource for understanding how complex subjective responses manifest differently depending on one’s orientation to the situation. This paper aims to familiarize qualitative research …

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Exposure Levels Of Airborne Fungi, Bacteria, And Antibiotic Resistance Genes In Cotton Farms During Cotton Harvesting And Evaluations Of N95 Respirators Against These Bioaerosols, Atin Adhikari, Pratik Banerjee, Taylor Thornton, Daleniece Higgins, Caleb Adeoye, Sonam Sherpa

Biostatistics, Epidemiology & Environmental Health Sciences: Faculty Publications

The USA is the third-leading cotton-producing country worldwide and cotton farming is common in the state of Georgia. Cotton harvest can be a significant contributor to airborne microbial exposures to farmers and nearby rural communities. The use of respirators or masks is one of the viable options for reducing organic dust and bioaerosol exposures among farmers. Unfortunately, the OSHA Respiratory Protection Standard (29 CFR Part 1910.134) does not apply to agricultural workplaces and the filtration efficiency of N95 respirators was never field-tested against airborne microorganisms and antibiotic resistance genes (ARGs) during cotton harvesting. This study addressed these two information gaps. …

Childhood Asthma-Management Practices In Rural Nigeria: Exploring The Knowledge, Attitude, And Practice Of Caregivers In Oyo State, Oyindamola Akinso, Atin Adhikari, Jingjing Yin, Joanne Chopak-Foss, Gulzar H. Shah

Biostatistics, Epidemiology & Environmental Health Sciences: Faculty Publications

Background: Caregivers of asthmatic children have a poor knowledge of proper asthma-management practices in Nigeria. This study examined the knowledge, attitudes, and practice behaviors of caregivers in the management of asthma in children under 5 years of age in Oyo State, Nigeria. Methods: While a mixed method was used in the original research, this brief describes the quantitative method used in this study to evaluate caregivers’ asthma-management practices. A 55-item questionnaire on childhood asthma knowledge, attitude, and practice was administered during child welfare-clinic visits to 118 caregivers. Data were analyzed using the IBM SPSS Version 25.0. Statistical significance was set …

An Examination Of Faculty And Staff Collaboration And Relationships In Higher Education, Jennifer Syno, Juliann S. Mcbrayer, Daniel W. Calhoun, Cordelia D. Zinskie, Katherine Fallon

Leadership, Technology & Human Development: Faculty Publications

Collaboration between academic and student affairs professionals is an important means of increasing student success; however, historical divides between these units have made implementation of these efforts challenging. This quantitative study sought to evaluate the perceptions of faculty and student affairs staff towards collaborative efforts and toward one another within a single campus of a comprehensive regional university within the southeast. Findings show that while both faculty and staff value collaborations and believe they positively impact student success, these units do not experience equitable voice and responsibility within collaborative efforts when conducted. Additionally, differences were found in enjoyment of collaborative …

Evaluation Of Feasibility And Acceptability Of A Web-Based Diabetes Prevention Program (Dpp) For Diabetes Risk Reduction In Chinese Americans In New York City, Ming-Chin Yeh, Wincy Lau, Claire Anselmo Keady, Margrethe Horlyck-Romanovsky, Ho-Jui Tung, Lu Hu, Grace X. Ma, Judith Wylie-Rosett

Health Policy & Community Health: Faculty Publications

Introduction: Intensive lifestyle intervention remains an effective modality to reduce diabetes incidence and delay the progression to type 2 diabetes. The primary aim of this study was to pilot-test the feasibility and acceptability of a culturally and linguistically tailored web-based DPP intervention among Chinese Americans with prediabetes living in New York City.

Methods: Thirteen Chinese American participants with prediabetes were recruited to complete a 1-year web-based Diabetes Prevention Program (DPP) lifestyle intervention. Quantitative and qualitative measures such as retention rate and data collected from web-based questionnaires and focus groups were collected and analyzed to assess study feasibility and …

How And Why To Write For The Journal Of Case Learning And Exceptional Learners, Aftynne E. Cheek

Journal of Case Learning & Exceptional Learners

The Journal of Case Learning and Exceptional Learners (JCLEL) is an open-access, double-blind, peer-reviewed online journal that publishes case studies, case study learning research, and resources. JCLEL focuses on students with intellectual and developmental disabilities and extensive support needs. In this article, we discuss how these unique case studies can be used in special education teacher preparation and why authors should consider publishing with JCLEL. Information about how to write case studies that can be used for educational purposes and that adhere to the case study frameworks will be provided. The authors also present a general overview of the journal, …

The Journey Behind And The Road Ahead, Kathryn L. Haughney, Jeongae Kang, Aftynne E. Cheek

Journal of Case Learning & Exceptional Learners

The editor's note is a message from the editors of JCLEL addressed to the journal's readership. In this note, the editors detail the establishment of the journal and the reader's role in perpetuating high-quality case learning in special education.

How To Review For The Journal Of Case Learning And Exceptional Learners, Jeongae Kang, Kathryn L. Haughney, Victoria Vanuitert

Journal of Case Learning & Exceptional Learners

Reviewers for JCLEL help to drive the progress of this open-access repository, storing the experiences of students with moderate to extensive support needs (M-ESN), their support systems, and their collaborators. This article supports the evaluation efforts of reviewers with descriptions of each consideration relevant to various submission types accepted by JCLEL. The rewards and opportunities of reviewing, from professional growth to service, are discussed and common questions are addressed. The presentation of this article is an example of a multi-media publication for JCLEL in which the primary file of the submission is a video or other Web 2.0 content.

Tempe Wilson: An Observation-Based Case Study, Kathryn L. Haughney, Shawnee Wakeman

Journal of Case Learning & Exceptional Learners

This observation-based case study is designed to capture the experience of a school-based evaluation process and psychological evaluation for Tempe, a black cis-gender, 4th-grade female student in a suburban area of a southeastern U.S. state. Given input from a variety of sources, this evaluation demonstrates the importance of flexibility of assessment administration, considerations for reliability, and triangulation in data interpretation for a useful and effective process (Wakeman et al., 2023). This case demonstrates how Tempe's diagnoses, experiences, strengths, and needs may inform the development of an Individualized Education Program (IEP). Questions on effective evaluations, recommendations, collaborations between the team members, …

Teaching Employment Skills To Carla Within Inclusive Postsecondary Education, Kelly R. Kelley, Kelly A. Clark, Larry Fisher

Journal of Case Learning & Exceptional Learners

The purpose of this intervention-based case study is to provide an overview of an intervention aimed at improving employment skills for Carla, a 22-year-old female with intellectual disability enrolled in an inclusive postsecondary education program (IPSE). One specific aim of the IPSE is to prepare graduates for competitive integrated employment and inclusive community opportunities. Data has consistently indicated that individuals with intellectual and developmental disabilities (IDD) experience poorer employment outcomes compared to their peers without disabilities (Lipscomb et al., 2017) and one barrier to employment for individuals with IDD include lack of soft skills. One intervention that has been developed …

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Comparing Particulate Matter Exposures During Two Work Shifts In A Large University Dining Commons Kitchen, Shalom Emmanuel, Atin Adhikari

Journal of the Georgia Public Health Association

Objective: Cooking emits a huge concentration of indoor air pollutants, including particulate matter (PM). Exposure to PM can lead to long-term adverse respiratory effects among workers engaged in cooking. Only a few studies have measured cooking-related air pollutants in large school cafeterias where young student workers are frequently employed. The objective of this research was to compare stationary exposures to PM from cooking during two work shifts at a very large university dining commons kitchen.

Methods: Number concentrations of PM of varying aerodynamic sizes (1, 2.5, 5, and 10 µm) were measured at the back kitchen, DC grill, and …