scholarly journals Assessing Process Attribute Visualization and Interaction Approaches Based on a Controlled Experiment

2020 ◽  
Vol 29 (04) ◽  
pp. 2050007
Author(s):  
Manuel Gall ◽  
Stefanie Rinderle-Ma
Keyword(s):  
Virtual Reality ◽  
Process Modeling ◽  
Business Processes ◽  
Continuous Process ◽  
Control Flow ◽  
Controlled Experiment ◽  
Analysis Task ◽  
Specific Analysis ◽  
Significant Difference ◽  
Process Attribute

Ensuring the smooth and efficient execution of business processes requires a continuous process quality assessment and optimization. Process optimization exploits process attributes and their values, e.g. cost or duration of a process task, in order to derive, for example, control flow adaptations. The complexity of the analysis can range from a few to a plethora of attributes, e.g. machining times and sensor parameters in the manufacturing domain. Hence, it is crucial to support single and multiple users (e.g. process analysts) in visually exploring process attributes and their values. Specifically, comparing and assessing different visualization and interaction approaches with respect to their efficiency is required in order to offer the most suitable approach to users for a specific analysis task. However, such assessments are currently missing. To close this gap, this paper assesses three visualization and interaction approaches, i.e. 2D, 3D, and 3D with virtual reality (VR) support, based on a controlled experiment. We choose the process modeling standard Business Process Modeling and Notation (BPMN) as 2D approach. 3DViz is introduced as 3D approach with focus on attribute representation, and additionally augmented with VR. A statistically significant difference between the approaches can be observed with respect to their efficiency.

scholarly journals Exploring location-dependency in process modeling

2014 ◽  
Vol 20 (6) ◽  
pp. 794-815 ◽  
Author(s):  
Xinwei Zhu ◽  
Jan Recker ◽  
Guobin Zhu ◽  
Flávia Maria Santoro
Keyword(s):  
Business Process ◽  
Process Modeling ◽  
Context Awareness ◽  
Business Processes ◽  
Flow Patterns ◽  
Control Flow ◽  
Process Models ◽  
Location Awareness ◽  
Process Data ◽  
Content Type

Purpose – Context-awareness has emerged as an important principle in the design of flexible business processes. The goal of the research is to develop an approach to extend context-aware business process modeling toward location-awareness. The purpose of this paper is to identify and conceptualize location-dependencies in process modeling. Design/methodology/approach – This paper uses a pattern-based approach to identify location-dependency in process models. The authors design specifications for these patterns. The authors present illustrative examples and evaluate the identified patterns through a literature review of published process cases. Findings – This paper introduces location-awareness as a new perspective to extend context-awareness in BPM research, by introducing relevant location concepts such as location-awareness and location-dependencies. The authors identify five basic location-dependent control-flow patterns that can be captured in process models. And the authors identify location-dependencies in several existing case studies of business processes. Research limitations/implications – The authors focus exclusively on the control-flow perspective of process models. Further work needs to extend the research to address location-dependencies in process data or resources. Further empirical work is needed to explore determinants and consequences of the modeling of location-dependencies. Originality/value – As existing literature mostly focusses on the broad context of business process, location in process modeling still is treated as “second class citizen” in theory and in practice. This paper discusses the vital role of location-dependencies within business processes. The proposed five basic location-dependent control-flow patterns are novel and useful to explain location-dependency in business process models. They provide a conceptual basis for further exploration of location-awareness in the management of business processes.

Toward a Formal Semantics for Control-Flow Process Models

2012 ◽  
Vol 23 (2) ◽  
pp. 72-97 ◽  
Author(s):  
Henry H. Bi ◽  
John Nolt
Keyword(s):  
Information Systems ◽  
Process Modeling ◽  
Business Processes ◽  
Formal Semantics ◽  
Control Flow ◽  
Process Models ◽  
Modeling Languages ◽  
Flow Process

A number of information systems have been developed to automate business processes. For process modeling, verification, and automation in information systems, a formal semantics of control-flow process models is needed. Usually process modeling languages (e.g., BPMN, EPC, IDEF3, UML, and WfMC standards) are used to represent control-flow process models. When these process modeling languages are developed, their informal semantics are typically described using examples, but their formal semantics are not defined. Although many different semantics for control-flow process models have been proposed, the existing semantics specifications have limitations because they do not support certain desirable features. In this paper, we propose a new formal semantics for control-flow process models. We show that it is more accurate, complete, and applicable than the existing semantics specifications.

A novel approach utilizing laser acupuncture teletherapy for management of elderly-onset rheumatoid arthritis: A randomized clinical trial

2021 ◽  
pp. 1357633X2110098
Author(s):  
Aya Sedky Adly ◽  
Afnan Sedky Adly ◽  
Mahmoud Sedky Adly ◽  
Mohammad F Ali
Keyword(s):  
Rheumatoid Arthritis ◽  
Virtual Reality ◽  
Elderly Patients ◽  
Aerobic Exercise ◽  
Health Professionals ◽  
Post Treatment ◽  
Laser Acupuncture ◽  
Virtual Reality Training ◽  
Significant Difference ◽  
Elderly Onset

Introduction Rheumatoid arthritis (RA) disease is a systemic progressive inflammatory autoimmune disorder. Elderly-onset RA can be assumed as a benign form of RA. Until recently, face-to-face therapeutic sessions between health professionals and patients are usually the method of its treatment. However, during pandemics, including coronavirus disease 2019 (COVID-19), teletherapeutic sessions can extensively increase the patient safety especially in elderly patients who are more vulnerable to these infections. Thus, the aim of this study was to evaluate a novel teletherapy approach for management of elderly patients suffering from RA by utilizing laser acupuncture. Methods A teletherapy system was used for management of elderly patients suffering from RA. Sixty participants were allocated randomly into two groups and the ratio was 1:1. Patients in the first group were treated with laser acupuncture and telerehabilitation sessions, which consisted of aerobic exercise and virtual reality training. Patients in the second group received telerehabilitation sessions, which consisted of aerobic exercise and virtual reality training. Evaluation of patients was done by using the Health Assessment questionnaire (HAQ), the Rheumatoid Arthritis Quality of Life (RAQoL) questionnaire, and the analysis of interleukin-6 (IL-6), serum C-reactive protein (CRP), plasma adenosine triphosphate (ATP) concentration and plasma malondialdehyde (MDA). Results A statistically significant difference was found in CRP, RAQoL, IL-6 and MDA between the pre- and post-treatments in the first group ( p < 0.05) favouring the post-treatment group, while the HAQ showed a statistically significant difference between pre- and post-treatments ( p < 0.05) in both groups. Statistically significant post-treatment differences were also observed between the two groups ( p < 0.05) in RAQoL, CRP, ATP and MDA, favouring the first group. Discussion Laser acupuncture teletherapy could be suggested as a reliable treatment method for elderly patients suffering from RA, as it can provide a safe and effective therapeutic approach. Teletherapy provided safer access to health professionals and patients while giving a high patient satisfaction value with a relatively lower cost (ClinicalTrials.gov Identifier: NCT04684693).

The Effects of Virtual Reality on Upper Extremity in Patients with Obstetric Brachial Plexus Injury

2021 ◽  
Author(s):  
Havva Ezgi Karas ◽  
Emine Atıcı ◽  
Gamze Aydın ◽  
Mert Demirsöz
Keyword(s):  
Virtual Reality ◽  
Brachial Plexus ◽  
Upper Extremity ◽  
Brachial Plexus Injury ◽  
Control Group ◽  
Nintendo Wii ◽  
Significant Difference ◽  
Obstetric Brachial Plexus ◽  
Conventional Physiotherapy ◽  
Obstetric Brachial Plexus Injury

AbstractThe present study aimed to examine the effects of playing Nintendo Wii games on upper extremity functions compared with conventional physiotherapy, in children with obstetric brachial plexus injury (OBPI). Twenty-two patients with brachial plexus injuries were enrolled. The patients were divided into two groups by simple randomization. The control group (conventional physiotherapy group [CTG]: n = 11) received conventional physiotherapy for 6 weeks (40 minutes per day, for 4 days per week). The study group, called Nintendo Wii group (NWG; n = 11), received conventional physiotherapy as well as tennis, baseball, and boxing games with Nintendo Wii on days when there was no physical therapy. The upper extremity range of motion (ROM) was evaluated using a digital goniometer, motor function was assessed using the Active Movement Scale (AMS), and shoulder functions were assessed with the Mallet Scoring System (MSS). Virtual reality treatment had a positive effect on shoulder flexion, forearm pronation, wrist flexion, ROM, and functionality (p < 0.05). There was a significant improvement in shoulder abduction and shoulder external rotation in the CTG (p < 0.05). There was no significant difference in the MSS values of either groups (p > 0.05). As per the AMS, in the NWG, the shoulder internal rotation increased significantly (p < 0.05). Nintendo Wii treatment used in addition to conventional physiotherapy may be effective in increasing upper extremity functions in children with OBPI. Clinical Trials Number NCT04605601.

Immersive and Non-Immersive Virtual Reality Distraction on Pain Perception to Intraoral Injections

2021 ◽  
Vol 45 (6) ◽  
pp. 389-394
Author(s):  
Supriya Kumari ◽  
Rachana Bahuguna ◽  
Nishita Garg ◽  
Ramakrishna Yeluri
Keyword(s):  
Virtual Reality ◽  
Pain Perception ◽  
Dental Treatment ◽  
Immersive Virtual Reality ◽  
Dental Procedures ◽  
Group I ◽  
Significant Difference ◽  
The Mean ◽  
Group Ii ◽  
Chi Square Analysis

Objective: To evaluate the efficacy of immersive VR (IVR) and non-immersive VR (NIVR) distraction on perceived pain during intraoral injections in children undergoing dental procedures. The objective was to introduce 3-dimensional nature of virtual reality during the provoking phase of dental treatment as a means of distraction in children. Study design: A total of 200 children were selected for the study, 100 for IVR group and 100 for NIVR group. After randomization, children were introduced to Oculus Go Standalone equipment; MCDAS (f), VAS, WBFRS and the treatment procedure using tell show do technique. Group I children were introduced to oculus go standalone headset with hand held controller to play temple run or roller coaster game while in group II, children watched cartoon movies of their choice. Pre-operative & post-operative MCDAS scores were obtained using MCDAS (f) questionnaire in local language. Post-operatively, VAS and WBFRS scores were also obtained. The data was analyzed using independent t-test and chi-square analysis. Results: Pre-operatively, the mean MCDAS scores were similar in both the groups viz. Group–I (29.20 ± 3.197) and Group–II (29.09 ± 3.803) and is statistically not significant. Post-operatively, the mean MCDAS scores were higher in non-immersive group (20.72 ± 2.822) as compared to immersive group (10.99 ± 2.227). VAS score was higher in non-immersive group (2.72 ± 0.99) as compared to immersive group (0.75 ± 0.88). WBFRS scores were higher in non-immersive group (2.78 ± 1.097) as compared to immersive group (0.82 ± 1.104). Conclusion: Three-dimensional virtual reality was found to be an effective means of distraction in children undergoing dental procedures and especially during the provoking phase. The significant difference obtained clearly indicates irrespective of immersiveness of virtual reality, anxiety had been decreased and on comparison the pain perception to intraoral injection is less in immersive virtual reality environment. Immersive VR distraction technique can serve as an adjunct to traditional behavior management strategies already available to the pediatric dentist.

scholarly journals CAN VIRTUAL REALITY BE AS GOOD AS OPERATING ROOM TRAINING? EXPERIENCE FROM A RESIDENCY PROGRAM IN GENERAL SURGERY

2018 ◽  
Vol 31 (4) ◽  
Author(s):  
Bruno Della Mea GASPERIN ◽  
Thamyres ZANIRATI ◽  
Leandro Totti Cavazzola
Keyword(s):  
Virtual Reality ◽  
Operating Room ◽  
General Surgery ◽  
Training Experience ◽  
Total Procedure Time ◽  
Significant Difference ◽  
Hands On ◽  
Second Year ◽  
Practice Time

ABSTRACT Background: The increasingly intense usage of technology applied to videosurgery and the advent of robotic platforms accelerated the use of virtual models in training surgical skills. Aim: To evaluate the performance of a general surgery department’s residents in a video-simulated laparoscopic cholecystectomy in order to understand whether training with virtual reality is sufficient to provide the skills that are normally acquired in hands-on experience at the operating room. Methods: An observational study with twenty-five first- and second-year general surgery residents. Each subject performed three video-laparoscopic cholecystectomies under supervision in a simulator. Only the best performance was evaluated in the study. Total number of complications and total procedure time were evaluated independently. The groups were defined according to total practice time (G1 and G2) and the year of residency (R1 and R2), each being analysed separately. Results: Twenty-one residents finished the three practices, with four follow-up losses. Mean practice time was 33.5 hours. Lowering of the rate of lesions in important structures could be identified after a level of proficiency of 60%, which all participants obtained regardless of previous in vivo experience. No significant difference between the R1 and R2 groups was observed. Conclusion: Learning in groups R1 and R2 was equal, regardless of whether previous practice was predominantly in vivo (R2) or with virtual reality (R1). Therefore, it is possible to consider that skills obtained in virtual reality training are capable of equalising the proficiency of first- and second-year residents, being invaluable to increase patient safety and homogenise learning of basic surgical procedures.

scholarly journals The Effect of Virtual Reality on Preoperative Anxiety: A Meta-Analysis of Randomized Controlled Trials

2020 ◽  
Vol 9 (10) ◽  
pp. 3151
Author(s):  
Chang-Hoon Koo ◽  
Jin-Woo Park ◽  
Jung-Hee Ryu ◽  
Sung-Hee Han
Keyword(s):  
Virtual Reality ◽  
Randomized Controlled Trials ◽  
Pediatric Patients ◽  
Meta Analysis ◽  
Random Effect Model ◽  
Preoperative Anxiety ◽  
Control Group ◽  
Controlled Trials ◽  
Randomized Controlled ◽  
Significant Difference

Virtual reality (VR), a technology that provides a stimulated sensory experience, has recently been implemented in various fields of medicine. Several studies have investigated the efficacy of VR on preoperative anxiety. The purpose of this meta-analysis was to validate whether VR could relieve preoperative anxiety in patients undergoing surgery. Electronic databases were searched to identify all randomized controlled trials (RCTs) investigating the effect of VR on preoperative anxiety. The primary outcome was defined as the preoperative anxiety scores. We estimated the effect size using the standard mean difference (SMD) with a 95% confidence interval (CI) using a random effect model. Ultimately, 10 RCTs, with a total of 813 patients, were included in the final analysis. Preoperative anxiety was significantly lower in the VR group than in the control group (SMD −0.64, 95% CI −1.08 to −0.20, p = 0.004). In a subgroup analysis, the preoperative anxiety scores were lower in the VR group than in the control group in pediatric patients (SMD −0.71, 95% CI −1.14 to −0.27, p = 0.002), whereas a significant difference was not observed between the two groups in adult patients (p = 0.226). The results of this meta-analysis indicated that VR could decrease preoperative anxiety, especially in pediatric patients.

scholarly journals Predicting Temporal Exceptions in Concurrent Workflows

2012 ◽  
pp. 196-218 ◽  
Author(s):  
Iok-Fai Leong ◽  
Yain-Whar Si ◽  
Robert P. Biuk-Aghai
Keyword(s):  
Business Processes ◽  
Critical Path ◽  
Workflow Management ◽  
Business Environment ◽  
Complex Problem ◽  
Control Flow ◽  
Prediction Algorithm ◽  
Task Completion ◽  
Ripple Effect ◽  
Long Duration

Current Workflow Management Systems (WfMS) are capable of managing simultaneous workflows designed to support different business processes of an organization. These departmental workflows are considered to be interrelated since they are often executed concurrently and are required to share a limited number of resources. However, unexpected events from the business environment and lack of proper resources can cause delays in activities. Deadline violations caused by such delays are called temporal exceptions. Predicting temporal exceptions in concurrent workflows is a complex problem since any delay in a task can cause a ripple effect on the remaining tasks from the parent workflow as well as from the other interrelated workflows. In addition, different types of loops are often embedded in the workflows for representing iterative activities, and presence of such control flow patterns in workflows can further increase the difficulty in estimation of task completion time. In this chapter, the authors describe a critical path based approach for predicting temporal exceptions in concurrent workflows that are required to share limited resources. This approach allows predicting temporal exceptions in multiple attempts while workflows are being executed. The accuracy of the proposed prediction algorithm is analyzed based on a number of simulation scenarios. The result shows that the proposed algorithm is effective in predicting exceptions for instances where long duration tasks are scheduled (or executed) at the early phase of the workflow.

scholarly journals Effectiveness of Construction Safety Hazards Identification in Virtual Reality Learning Environment

2019 ◽  
Vol 4 (12) ◽  
pp. 375
Author(s):  
Nurshamshida Md Shamsudin ◽  
Faizah Abdul Majid
Keyword(s):  
Virtual Reality ◽  
Learning Environment ◽  
Occupational Safety ◽  
Publishing House ◽  
Occupational Safety And Health ◽  
Learning Performance ◽  
Safety Hazards ◽  
Safety And Health ◽  
Significant Difference ◽  
Traditional Construction

Occupational Safety and Health Act (1994) and efforts taken to ensure the safety of workers in the construction industry. Despite these, accident rates are still alarming. One of the reasons is due to the weak pedagogy, lack of technology integration, and hazardous learning environment that lead towards low learning performance and practicing safety procedures. This study aims to discover the effectiveness of virtual reality simulation learning environment. Results show that there is a significant difference in trainee's achievements in a traditional construction site visit and virtual construction environment. To conclude, virtual reality learning environment offers effective learning platforms for millennials.Keywords: safety hazards; occupational safety and health; virtual reality;eISSN: 2398-4287 © 2019. The Authors. Published for AMER ABRA CE-Bs by E-International Publishing House, Ltd., UK. This is an open-access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer-review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.DOI: https://doi.org/10.21834/e-bpj.v4i12.1802

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