scholarly journals Adaptable legged-magnetic adhesion tracked wheel robotic platform for misaligned mooring chain climbing and inspection

2018 ◽  
Vol 45 (5) ◽  
pp. 634-646 ◽  
Author(s):  
Mahesh Dissanayake ◽  
Tariq Pervez Sattar ◽  
Shehan Lowe ◽  
Ivan Pinson ◽  
Tat-hean Gan
Keyword(s):  
Offshore Structures ◽  
Daily Basis ◽  
Robotic Platform ◽  
Destructive Testing ◽  
Content Type ◽  
Integrity Assessment ◽  
Human Operators ◽  
Chain Links ◽  
Mooring Chain ◽  
Magnetic Adhesion

Purpose Mooring chains used to stabilise offshore floating platforms are often subjected to harsh environmental conditions on a daily basis, i.e. high tidal waves, storms, etc. Therefore, the integrity assessment of chain links is vital, and regular inspection is mandatory for offshore structures. The development of chain climbing robots is still in its infancy due to the complicated climbing structure presented by mooring chains. The purpose of this paper is to establish an automated climbing technique for mooring chain inspection. Design/methodology/approach This paper presents a Cartesian legged tracked-wheel crawler robot developed for mooring chain inspection. The proposed robot addresses the misalignment condition of the mooring chains which is commonly evident in in situ conditions. Findings The mooring chain link misalignment is investigated mathematically and used as a design parameter for the proposed robot. The robot is validated with laboratory-based climbing experiments. Practical implications Chain breaking can lead to vessel drift and serious damage such as riser rupture, production shutdown and hydrocarbon release. Currently, structural health monitoring of chain links is conducted using either remotely operated vehicles which come at a high cost or by manual means which increase the danger to human operators. The robot can be used as a platform to convey equipment, i.e. tools for non-destructive testing/evaluation applications. Originality/value This study has upgraded a previously designed magnetic adhesion tracked-wheel mooring chain climbing robot to address the misalignment issues of operational mooring chains. As a result of this study, the idea of an orthogonally placed Cartesian legged-magnetic adhesion tracked wheel robotic platform which can eliminate concerns related to the misaligned mooring chain climbing has been established.

scholarly journals Design and prototype of a magnetic adhesion tracked-wheel robotic platform for mooring chain inspection

2018 ◽  
Vol 232 (8) ◽  
pp. 1063-1074 ◽  
Author(s):  
Mahesh Dissanayake ◽  
Tariq Sattar ◽  
Tat-Hean Gan ◽  
Ivan Pinson ◽  
Shehan Lowe
Keyword(s):  
Numerical Study ◽  
Offshore Structures ◽  
Daily Basis ◽  
Maximum Speed ◽  
Robotic Platform ◽  
Destructive Testing ◽  
Integrity Assessment ◽  
Tidal Waves ◽  
Mooring Chain ◽  
Magnetic Adhesion

The development of climbing robots for mooring chain applications is still in its infancy due to the operational complexity and the geometrical features of the chain. Mooring chains are subjected to high tidal waves, harsh environmental conditions and storms on a daily basis. Therefore, the integrity assessment of chain links is vital and regular inspection is mandatory for offshore structures. The magnetic adhesion tracked-wheel crawler robot presented in this study is suitable for mooring chain climbing in air and the technique can be adapted for underwater use. The robotic platform can climb mooring chains at a maximum speed of 42 cm/min with an external load of 50 N. A numerical study was conducted to investigate the adhesion module and analysis of the robot structural design. Numerical results were validated using a prototyped robot in laboratory conditions. The proposed robot can be used as a platform to convey equipment for non-destructive testing applications.

scholarly journals Application of Fieldbus Technology to Enable Enhanced Actuator Control of Automated Inspection for Offshore Structures

2019 ◽  
Vol 2 (3) ◽  
pp. 29
Author(s):  
Aman Kaur ◽  
Michael Corsar ◽  
Bingyin Ma
Keyword(s):  
Structural Integrity ◽  
Cost Effective ◽  
Offshore Structures ◽  
Inspection System ◽  
Automated Inspection ◽  
Destructive Testing ◽  
Control Units ◽  
Inspection Systems ◽  
Human Operators ◽  
Actuator Control

Due to extreme environmental loadings and aging conditions, maintaining structural integrity for offshore structures is critical to their safety. Non-destructive testing of risers plays a key role in identifying defects developing within the structure, allowing repair in a timely manner to mitigate against failures which cause damage to the environment and pose a hazard to human operators. However, in order to be cost effective the inspection must be carried out in situ, and this poses significant safety risks if undertaken manually. Therefore, enabled by advancements in automation and communication technologies, efforts are being made to deploy inspection systems using robotic platforms. This paper proposes a distributed networked communication system to meet the control requirements of a precision rotary scanner for inspection of underwater structures aimed at providing a robotic inspection system for structural integrity in an offshore environment. The system is configured around local control units, a fieldbus network, and a supervisory control system accounting for the environment conditions to provide enhanced control of actuators for automated inspection of offshore structures.

How Phillips saw the light

2020 ◽  
Vol 36 (8) ◽  
pp. 29-31
Keyword(s):  
Design Methodology ◽  
Reading Time ◽  
Daily Basis ◽  
Business World ◽  
Content Type ◽  
Freak Show ◽  
The World ◽  
Pertinent Information ◽  
The One ◽  
Practical Implications

Purpose Reviews the latest management developments across the globe and pinpoints practical implications from cutting-edge research and case studies. Design/methodology/approach This briefing is prepared by an independent writer who adds their own impartial comments and places the articles in context. Findings The problem with developing a reputation of being something of an oracle in the business world is that all of a sudden, everyone expects you to pull off the trick of interpreting the future on a daily basis. Like a freak show circus act or one-hit wonder pop singer, people expect you to perform when they see you, and they expect you to perform the thing that made you famous, even if it is the one thing in the world you don’t want to do. And when you fail to deliver on these heightened expectations, you are dismissed as a one trick pony, however good that trick is in the first place. Originality/value The briefing saves busy executives and researchers hours of reading time by selecting only the very best, most pertinent information and presenting it in a condensed and easy-to-digest format.

Robot obstacle avoidance system using deep reinforcement learning

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Xiaojun Zhu ◽  
Yinghao Liang ◽  
Hanxu Sun ◽  
Xueqian Wang ◽  
Bin Ren
Keyword(s):  
Reinforcement Learning ◽  
Collision Avoidance ◽  
Obstacle Avoidance ◽  
Learning Algorithm ◽  
Optimal Path ◽  
Environmental Parameters ◽  
Working Environment ◽  
Content Type ◽  
Practical Applications ◽  
Human Operators

Purpose Most manufacturing plants choose the easy way of completely separating human operators from robots to prevent accidents, but as a result, it dramatically affects the overall quality and speed that is expected from human–robot collaboration. It is not an easy task to ensure human safety when he/she has entered a robot’s workspace, and the unstructured nature of those working environments makes it even harder. The purpose of this paper is to propose a real-time robot collision avoidance method to alleviate this problem. Design/methodology/approach In this paper, a model is trained to learn the direct control commands from the raw depth images through self-supervised reinforcement learning algorithm. To reduce the effect of sample inefficiency and safety during initial training, a virtual reality platform is used to simulate a natural working environment and generate obstacle avoidance data for training. To ensure a smooth transfer to a real robot, the automatic domain randomization technique is used to generate randomly distributed environmental parameters through the obstacle avoidance simulation of virtual robots in the virtual environment, contributing to better performance in the natural environment. Findings The method has been tested in both simulations with a real UR3 robot for several practical applications. The results of this paper indicate that the proposed approach can effectively make the robot safety-aware and learn how to divert its trajectory to avoid accidents with humans within the workspace. Research limitations/implications The method has been tested in both simulations with a real UR3 robot in several practical applications. The results indicate that the proposed approach can effectively make the robot be aware of safety and learn how to change its trajectory to avoid accidents with persons within the workspace. Originality/value This paper provides a novel collision avoidance framework that allows robots to work alongside human operators in unstructured and complex environments. The method uses end-to-end policy training to directly extract the optimal path from the visual inputs for the scene.

Adaptive clothing features to support daily exercising needs of muscular dystrophy victimized women in Sri Lanka

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Niromi Seram ◽  
Rivini Mataraarachchi ◽  
Thanuri Jayaneththi
Keyword(s):  
Muscular Dystrophy ◽  
Sri Lanka ◽  
Research Effort ◽  
Health And Safety ◽  
Psychological Needs ◽  
Daily Basis ◽  
Structured Interviews ◽  
Content Type ◽  
Daily Exercise ◽  
Custom Made

Purpose Exercising is a key approach adopted by muscular dystrophy patients to halt the weakening of muscles as it can eventually lead to serious immobility issues. Though it is essential to exercise on a daily basis for healthy living, there is no mention of any research effort in the current literature regarding the development of an apparel product for these mobility-affected patients that might assist them both in meeting their exercising needs and providing them some comfort in their daily living. Thus, this paper aims to focus on identifying the specific needs of muscular dystrophy victims and proposing special adaptive clothing solutions to support their daily exercise and mobility needs. Design/methodology/approach To achieve the objectives of this study, attention was focused on the muscular dystrophy afflicted women in Sri Lanka. Semi-structured interviews were conducted with the female victims of muscular dystrophy and their lifestyles were observed carefully; additional data were gathered by holding semi-structured interviews with their physiotherapists. Further, interviews were conducted with both garment technologists and fabric technologists too. Data gathered through these methods were analyzed qualitatively using the principles of thematic analysis and then aggregate conclusions were drawn. Findings It was observed that the patients were engaged in special activities such as exercising three times a day besides following their normal day-to-day activities to maintain and develop muscle strength. It soon became evident that these women found it difficult to perform their daily exercise routines with their regular clothing and were looking for custom made clothing they could wear all day long in comfort and avoid the problems that arose while exercising. The study specifies the requirements that must be met to satisfy both generic and specific needs. Considering all these aspects some adaptive clothing solutions were proposed to support daily exercising activity with respect to comfort, convenience, health and safety, as well as socio-cultural and psychological needs. Originality/value The area of fusing generic and specific features to support the daily exercising needs of muscular dystrophy victims is an untouched field of experimentation and being a need of the disabled, the present study marks a milestone on the way to a novel area of apparel design, besides exploring a new field of research.

Exploring the relationship between corporate responsibility and firm performance from a social media perspective

2019 ◽  
Vol 15 (3) ◽  
pp. 296-317 ◽  
Author(s):  
Ray Qing Cao ◽  
Dara G. Schniederjans ◽  
Vicky Ching Gu ◽  
Marc J. Schniederjans
Keyword(s):  
Social Media ◽  
Corporate Responsibility ◽  
Abnormal Return ◽  
Media Framing ◽  
Idiosyncratic Risk ◽  
Daily Basis ◽  
Expected Return ◽  
Content Type ◽  
The Difference ◽  
The Relationship

Purpose Corporate responsibility perceptions from stakeholders are becoming more difficult to manage. This is in part because of large amount of social media being projected to stakeholders on a daily basis. In light of this, the purpose of this paper is to examine the relationship between corporate responsibility framing from the social media perspective firm’s performance as defined by abnormal-return (defined as the difference between a single stock or portfolios return and the expected return) and idiosyncratic-risk (defined as the risk of a particular investment because of firm-specific characteristics). Design/methodology/approach Hypotheses are developed through agenda-setting theory and stakeholder and shareholder viewpoints. The research model is tested using sentiment analysis from a collection of social media from several industries. Findings The results provide support that three corporate responsibility social media categories (economic, social and environmental-framing) will have different impacts (delayed, immediate) on abnormal-return and idiosyncratic-risk. This study finds differences between immediate (one-day lag) and delayed (three-day lag) associations on abnormal-return and idiosyncratic-risk. Originality/value This study also suggests differences between the amount and sentiment of corporate responsibility social media framing on abnormal-return and idiosyncratic-risk. Finally, results identify interaction effects between different corporate responsibility social media categories.

Using mobile technologies in libraries and information centers

2014 ◽  
Vol 31 (5) ◽  
pp. 14-16 ◽  
Author(s):  
Dheeraj Singh Negi
Keyword(s):  
Mobile Devices ◽  
Mobile Technology ◽  
Daily Basis ◽  
Information And Communications Technology ◽  
Mobile Technologies ◽  
Great Promise ◽  
Digital Information ◽  
Security Measures ◽  
User Privacy ◽  
Content Type

Purpose – The purpose of this paper is to describe the use of mobile technologies to develop new ways of Libraries and Information Centre. Mobile devices help to connect with patrons. Creating a library application (“app”) or mobile Web site that allows patrons to access library hours, view their library account or even search databases is easier than most people think. The resources below should help libraries begin to plan and implement their own unique mobile presence: analyzing the present usage of mobile devices; providing an overview of devices, providers and features; describing the various activities these devices support for well library use; focusing how libraries and our librarians are responding with services tailored for these devices; and what can be done by libraries in future in this respect”. Design/methodology/approach – Information and Communications Technology continues to expand the boundaries of higher education into the “anytime/anywhere” experiences. Mobile communication is transforming how people search, receive and interact with information on a daily basis. In just a few short years, smart phone ownership has skyrocketed, and popular use of e-readers has been steadily on the rise. These advanced mobile tools provide portable access to the world of information, across boundaries of subject, discipline and industry. Findings – Mobile technology holds great promise for enabling libraries to provide enhanced services in a form users increasingly are demanding. If this promise is to be fully realized, however, libraries will need to conduct analyses and make smart decisions to address the issues outlined above, support staff education and explore partnerships and new funding models, and be prepared to compromise with respect to their traditional information delivery models. Originality/value – The explosion of advanced mobile technology and robust digital information collection capabilities should prompt libraries to examine carefully the ramifications for user privacy. Libraries can maintain their commitment to user privacy without overcompensating by imposing burdensome security measures or annoying interruptions. For example, libraries do not have to show users a privacy statement or security warning every time they want to access information on a mobile device. A single log-in and acceptance of terms of use, similar to the procedures for other mobile applications and services, should suffice. At the same time, libraries can take the opportunity to educate users in best practices with respect to privacy issues associated with the use of mobile devices.

Emotional intelligence and perceived organizational support as predictors of emotional exhaustion among nurses and midwives

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Joshua King Safo Lartey ◽  
Kwesi Amponsah-Tawiah ◽  
Joseph Osafo
Keyword(s):  
Emotional Intelligence ◽  
Emotional Exhaustion ◽  
Organizational Support ◽  
Perceived Organizational Support ◽  
Daily Basis ◽  
Public Hospitals ◽  
Cross Sectional ◽  
Content Type ◽  
Quality Healthcare ◽  
Nurses And Midwives

PurposeNavigating the physical and emotional conditions of patients on daily basis can be emotionally exhaustive, requiring health professional to regulate their emotions in order to provide quality healthcare. The present study set out to examine the consequential effect of emotional intelligence and perceived organizational support (POS) on emotional exhaustion of nurses and midwives in the Ghanaian context. The study also examined the effects of age and cadres of nursing and midwifery on emotional exhaustion.Design/methodology/approachThe study was quantitative in nature and employed the cross-sectional design in sampling respondents. The study was conducted in four public hospitals and two quasi-public hospitals in three main districts in the Greater Accra Region of Ghana. A sample of 342 nurses and midwives were proportionately sampled from various health facilities. The sample constituted of staff nurses and midwives.FindingsThe study revealed that while age, cadres of nursing and midwifery and POS had consequential effects on emotional exhaustion, emotional intelligence failed to predict emotional exhaustion.Originality/valueFindings of the study draw the attention to the importance of organizational support in attenuating the emotional exhaustion associated with the nursing profession.

Supporting, tinkering, adjusting and resisting: a typology of user translations of the built environment

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ahlam Ammar Sharif ◽  
Andrew Karvonen
Keyword(s):  
Architectural Design ◽  
Participant Observation ◽  
User Involvement ◽  
Actor Network Theory ◽  
Daily Basis ◽  
User Preferences ◽  
Building Performance ◽  
Structured Interviews ◽  
Content Type

PurposeArchitectural theorists have a long tradition of acknowledging the centrality of building users to architectural production. This article contributes to the discourse on architecture, actor–network theory (ANT), and users by proposing a typology of user translations ranging from supporting to tinkering to adjusting to resisting.Design/methodology/approachThe research utilises an ANT-inspired ethnography of sustainable lighting scripts at the Masdar Institute of Science and Technology (MIST). It comprises semi-structured interviews with MIST designers and students, and site visits and participant observation to understand how the users interpret the scripts and how they interact and change them on a daily basis.FindingsThere is a shared understanding that users do not simply receive architectural designs but interpret and change them to suit their preferences. The findings reveal the multiple ways that users interpret and respond to the assumptions of designers and in the process, recast the relations between themselves and their material surroundings.Originality/valueThe research contributes to acknowledging the centrality of users to architectural design processes and the interpretation of design scripts, addressing the limitation in current literature in demonstrating the diversity of ways that users react to such scripts. The research suggests that user actions have significant implications on long-term building performance. It accordingly points to the need for devising multiple means of user involvement in the design process and allowing greater flexibility in design scripts to improve the alignment with user preferences.

Food and immunity: a pragmatic approach to mitigate corona viruses attack

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Muhammad Farhan Jahangir Chughtai ◽  
Saira Tanweer ◽  
Samreen Ahsan ◽  
Tariq Mehmood ◽  
Atif Liaqat ◽  
...  
Keyword(s):  
Adaptive Immunity ◽  
Coming Out ◽  
Fruits And Vegetables ◽  
Daily Basis ◽  
The Body ◽  
Leafy Vegetables ◽  
Content Type ◽  
Viral Attachment ◽  
Baked Products ◽  
Corona Viruses

Purpose Corona viruses have spiked structure and enveloped glycoproteins in their structure, along with specific proteins in membranes. The mode of action of COVID-19 consists of three phases, i.e. viral replication, immune hyperactivity and pulmonary destruction. However, angiotensin-converting enzyme is an essential receptor that causes COVID-19. After infecting any individual, COVID-19 develops in specific pattern with the following stages: replication stage and adaptive immunity stage. After adaptive immunity stage, the clinical symptoms of patient include cough, fever, runny nose, shortness of breath and many more. To cope with this COVID-19, food and nutrition played an important role. The purpose of this review article is to emphasize the significance of food and immunity to reduce COVID-19 attack among susceptibles. Design/methodology/approach In the present era, corona virus, a member of crown-shaped type, created a pandemic situation around the globe owing to its capability to move from human to animals and vice versa. This virus can transfer its 35% infection to the individuals. Contemporarily, this outbreak was observed in Wuhan, China in December 2019 and affected a huge number of communities by spreading like common flu. However, after investigation, it was revealed that COVID-19 is different from common flu regarding respiratory illness created by this novel coronavirus along with its taxonomy. Findings Over and above to all the aforementioned food safety concerns, it is suggested to use sufficient supply of green leafy vegetables along with fiber-rich foods such as legumes, beans, whole grains and vegetables. It is further good for health to get all these varieties whole and organic. The individuals should use probiotics (lactobacillus) on daily basis as a source of diary probiotic that can further bind to the virus directly and then can inhibit the viral attachment with body cells; also the probiotics are claimed to enhance the immune system of the body. Research limitations/implications In the case of fruits and vegetables purchased, it must be thoroughly washed with water and then disinfected; after pat drying, these fruits and vegetables can be moved to the refrigerator and stored along with other foods. During the outbreak of COVID-19, the partially cooked or ready-to-eat foods should be avoided, especially eggs, meat, meat products, milk and milk-related products. On the other side, nuts should not be consumed; if required, then it must be properly roasted at home before consumption. Practical implications The baked product right after coming out of oven is completely safe; however, these are contaminated during handling such as crumb in case of bread and with knives; so in the breakout of any viral attack, the individuals should avoid slicing of the bread. Moreover, it is recommended to place the baked products in personal bags instead of bulk quantity. Before the consumption, the baked products should be toasted, microwaved or heated with the help of pan (traditional) to reduce the amount of viral load. Social implications Dietary supplements are taken by most of the people on daily basis or sporadically especially when they are suffering from inflammation or cold. They have options while selecting these types of supplements such as probiotics, Echinacea, omega-3 fatty acids, vitamins D and E, calcium glucosamine, garlic and iron. These supplements are beneficial for the group of population who do not eat diversity of food as sufficient amount of essential nutrients is provided through this pathway. Originality/value This work is original in its novelty.

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