bluuebunny/crossref_metadata_2025_split huggingface dataset:
Use of dual numbers in kinematical analysis of spatial mechanisms. Part I: principle of the method
Authors: Ciornei F C , Alaci S , Pentiuc R D , Doroftei I 
Published: September 2019

Abstract
The general methodology of solving a problem of kinematical analysis of a spatial mechanism is presented. The method is based on the system proposed by Hartenberg and Denavit, concerning the notations of the coordinate frames attached to the elements of the mechanism and on the closure matrix equation of a kinematical chain. Carrying out the closure equation for the case of spherical mechanisms and then applying the transfer principle of Kotelnikov, the equations which allow for finding the unknown parameters of the kinematical chain are obtained. Starting from the typical form of closure equation based on homogenous operators Hartenberg-Denavit, the closure matrix equation is obtained in dual format. By identifying two special matrices it is shown that the coefficient of the dual part from the closure equation is in fact a sum in which each term is attained from the real part of the closure equation by performing simple operations involving the special matrices, that reduce the calculus volume.
Numerical analysis of the influence of mechanical stress on the battery pack’s housing of an electric vehicle
Authors: Scurtu L , Szabo I , Mariasiu F , Moldovanu D , Mihali L , Jurco Ancuta 
Published: September 2019

Abstract
In this paper is presented a crash simulation analysis of the battery pack in order to increase the stiffness when the electric vehicle is involved in traffic accidents. In the first part is presented the state of the art, highlighting the advantages of using electric vehicles. The second part of the study presents the steps required to create the crash analysis of the battery pack. The CAD design of the assembly model is generated using advanced modelling techniques for two simulations battery pack models: the first model has a basic shape geometry and the second model has a shock absorber mounted on the external faces to reduce the crash impact. The crash analysis of the battery pack is determined for three velocity cases: 7 m/s, 14 m/s and 21 m/s. The final part of the paper presents the simulation results and different advantages of the battery pack geometry with the shock absorber.
Exploring the insights of a consignment stock program implementation in a leagile supply chain
Authors: Faur M , Bungau C 
Published: September 2019

Abstract
Supply chain performance, in terms of total cost, service level and delivery lead-time is an extremely important objective in an organization, being directly linked to inventory management. Therefore, well managed inventory is a main trigger to increasing profitability. In this regard, the present study attempts to explore the readiness of a leagile manufacturing company to embrace consignment stock model, in order to reduce inventory value for raw materials and packaging, as well as to avoid forecast accuracy problems and cash-flow issues. The methodology includes a brief analysis of different types of inventory models, focusing on consignment stock approach and proposes an exploratory case study, represented by a successful implementation of a consignment stock program in a multinational company, having already leagile prerequisites. Using as a basis the insights and learning from the real case, the aim of the study is to develop a business processes framework, accommodated with the IT support software, to serve as a guideline for future implementation of such programs.
An optimization approach by Finite Element Analysis, using Design of Experiments and Response Surfaces- a survey
Authors: Negrău D C , Grebenişan G , Gherghea C 
Published: September 2019

Abstract
The deformation of an aluminum plate, called in this paper, a support plate, which is part of a bending plastic deformation device, is studied in this paper using the Finite Elements Method, respectively design points of the design by optimization using features such as Design of Experiments and Response Surfaces. The start of the analysis was determined by a functional requirement in the design and construction of a sophisticated bending device controlled by steel plates for the production of exhausts for cars. To optimize the project, it was necessary to analyze the behavior of the active material and components of the device. The analysis of material and piece behavior, in working conditions, has been developed by addressing the facilities offered by Ansys software. Following FEA analysis, optimizing the active components of the device has provided proven results in practice through the execution and operation of the device, according to the technology required by the product designer.
Research about the quality of the surface after turning out of duralumin alloy
Authors: Pascu I , Popescu I , Gheorghe S , Geonea I. , Didu A 
Published: September 2019

Abstract
This paper describes a study concerning the inner turning of a piece of duralumin, using 6 values of the feed. The shapes and micro-geometry of the resulting chips have been observed experimentally and these are explained by the large deformations in the cutting area. The processed surfaces, both by enlarging them to a microscope and by measuring the roughness have been experimentally studied. Also, the sections of chips are analysed, giving the theoretical and real dimension values, also interpreted on the basis of the deformations in the cutting area. Also, values of roughness parameters are presented.
The calculus of the temperatures in the characteristic points of the gasoline direct injection engine cycle
Authors: Blaga V , Mitran T , Dragomir G , Făgădar D 
Published: September 2019

Abstract
Based on an own model, the authors have realized the analytical calculus of the temperatures in the characteristic points of the thermodynamic cycle for a GDI engine. These temperatures were calculated depending on the engine’s rotational speed and on the environmental temperature (considered to be equal to the one in the intake valve port) and for an excess air factor λ=1. The first step was the development of the mathematical model of the engine’s cycle. The model includes the presentation of the initial data for the thermal calculus and the correlation between the expressions of the parameters in order to develop the computing programs. The calculated data were compared with experimental data acquired at environmental temperature, at maximum power and at the rotational speed corresponding to the maximum power (full load). The results show that the proposed model is accurate enough to be a useful tool for the study of GDI engines.
Approaching the labor market from a generational perspective
Authors: Pop D , Pop M T 
Published: September 2019

Abstract
Generation research has grown even broader and has deeply extended in the last 30 years. It can be said that the use of research results related to generations in the human resources management is a certainty in to use the best recruitment, selection, and integration methods of employees, to implement the best methods and techniques of stimulating the employee’s creativity and innovation in organizations, communication, etc. An important phenomenon emerged as a result of the generational conflict, which has been highlighted in recent years, is that of the young people named “idlers”, i.e., those inactive on the labor market, called NEET.
Aspects of wear braking process on brake discs and brake pads in the construction of commercial vehicles
Authors: Popa M F , Capătă D M S , Burnete N 
Published: September 2019

Abstract
Economy and low pollution are essential requirements imposed on modern cars. The continuous increase in travel speeds, coupled with the massive increase in the number of vehicles worldwide, has led to the need for the development and use of braking systems to a very high standard. The exploitation of commercial vehicles has as a central factor the profit, which in turn is built on the highest availability of the vehicle and the lowest possible maintenance costs. Both aspects of profit are found in the process of wear of the elements in the braking system. For the owner of a truck, wear is measured in costs (parts and time for repairs). This study shows the result of analyzing multiple sets of data collected from trucks brake control unit in various stages of maintenance and highlights key factors influencing the braking process, also seeking solutions for increased braking performance, reduced wear, reduced maintenance costs for the braking system and increasing the availability of a truck. The processing of braking data and analysis of the braking process, based on the measured data, allowed the identification of some predominant influence factors in the wear of the disc brakes of the analyzed commercial vehicles.
Python-Based Data Analysis Tool for a 6-DoF Industrial Robot
Authors: Alsabbagh A , Nasser A N , Husi G 
Published: September 2019

Abstract
A newly developed tool for analysing and visualizing data based on python. The main aim of this tool is saving the data analysis time by automating the data analysis process and creating a Graphical User Interface (GUI) to facilitate the usage of this tool regardless how much they experience programming with Python. This paper describes the architecture of the developed software tool and provides a variety of examples to show the developed tool’s advanced features and functionalities. Moreover, in this paper, an industrial problem related to data analysis is discussed, and then a solution of this problem is presented. This tool is developed using open source libraries (Pandas, Matplotlib, Tkinter, and SciPy) to manage multi data files at once using one tool, as well as visualizing and storing these data in one file in a clean and organized way.
Design and development of a virtual model of an electric vehicle of category L7
Authors: Pappalardo C M , Lombardi N , Dašić P V , Guida D 
Published: September 2019

Abstract
This study is aimed at creating an accurate mathematical model, developed in Matlab-Simulink through the Simscape library, concerning an electric vehicle of class L7. To this end, a mechanical model with three degrees of freedom is used. The degrees of freedom are advancement, vertical displacement, and pitch. Two degrees of freedom are also added to this dynamical model in order to model the stiffness and the damping of the tires, whose behavior is described by the “Magic Formula”. The propulsion unit is modeled in a standard design configuration. The vehicle can be controlled by supplying the driver’s inputs, by controlling the cruising speed, or by ensuring that the vehicle has a driving cycle. The proposed model allows for identifying the critical aspects of the selected design solution, thereby reducing the time required in the design phases.
Modeling techniques for kinematic analysis of a six-axis robotic arm
Authors: Guida R , De Simone M C , Dašić P , Guida D 
Published: September 2019

Abstract
The purpose of this analysis is to evaluate the effectiveness of different modeling techniques for a COMAU six-axis robot arm. The robot manipulator represents one of the most used robots in the mechanical industry. For robots, with a high number of degrees of freedom, to obtain a kinematic model, Denavit-Hartemberg parameters allow representing geometric transformations in the Euclidean space through the minimum number of parameters. Furthermore, the use of detailed multibody models and the use of sophisticated tools like the Robotics Toolbox System, allow performing, in a very efficient way, inverse kinematic analysis and trajectory planning to control the robot move from one configuration to another.
Increase of operational properties of tools and machine parts nitriding the powder mixture
Authors: Kostyk V O , Kostyk K O , Kovalov V D , Turmanidze R , Dašić P 
Published: September 2019

Abstract
The effect of diffusion layers and alloying elements on surface hardness, micro-coarseness, and wear resistance of hardened tool steels in a nitrogen-containing medium is Studied. The experiments showed that nitriding in the powder mixture strengthens the surface layers in 2–3.5 times without reducing the volume strength of the material in question, which contributes to the preservation of high structural strength of tools and machine parts. It was found that nitriding in the dispersed powder mixture provides increased wear resistance of 1.3–2.5 times of steel, which can significantly improve the reliability and durability of products. Mathematical models of wear resistance of the investigated steels after the proposed hardening technology of nitriding are obtained.
Industrial Cultural Heritage as an Alternative Tourism Model: Case study of the Wider Lavreotiki area in Southeastern Attica
Authors: Cheirchanteri Georgia 
Published: September 2019

Abstract
The cultural heritage of a country includes monuments and historical spots, landscapes and a structured environment, collections, old and on-going cultural practices, knowledge and live experiences. It records the long history and identity of each nation and the collective memory of a place. In modern societies, history and culture have been transformed from process to product, thus becoming an integral part and a powerful reference point of economic life. Modern monuments, from the late 19th to the early 20th century, constitute dynamic systems of cultural heritage; especially industrial buildings that can become part of cultural tourism. The aim of this study is to demonstrate the potential development of the country’s industrial cultural heritage for the diversification of the Greek “tourist product” and the complete promotion and renewal of the traditional touristic destinations in Greece. The development of the Greek “tourist product” beyond the coastal holiday, combining the monumental wealth of the country with the natural and historical, local and national environment where it is integrated, will create the necessary momentum for overcoming the structural problems of Greek tourism. Especially, the wider Lavreotiki area in Southeastern Attica, including the historic industrial complex, the French Mines Company of Lavrion, which was built in 1876, will be highlighted as an alternative touristic destination place.
The effectiveness of real estate management in the local government – an example of voivodship capitals in Poland
Authors: Cymerman Joanna , Cymerman Wojciech 
Published: September 2019

Abstract
The paper discusses the effectiveness of real estate management in voivodship capitals in Poland. The time frame of analyses: 2005-2016. The main research hypothesis was made, that voivodship cities located in voivodships with a higher level of economic development, conduct more effective real estate management. The analysis was carried out in four stages: identification and measurement of the effectiveness of real estate management, assessment of cities/ordering in terms of the degree of property management efficiency, evaluation of similarity of voivodship capitals in terms of the effectiveness of their property management, identification of the direction and strength of relations between the level of property management effectiveness in capitals and the level of economic development of the voivodships. The data came from the Local Data Bank of the Polish Central Statistical Office.
17 Is Phenotypical Prefrailty all the Same? A Longitudinal Investigation of Two Prefrailty Subtypes in a Population-Based Longitudinal Study of Ageing
Authors: Romero-Ortuno Roman , Scarlett Siobhan , Anne Kenny Rose 
Published: September 2019

Abstract

Background
Fried’s frailty phenotype is defined by five criteria: exhaustion, unexplained weight loss, weakness, slowness and low physical activity. Pre-frailty (PF) meets one or two criteria. PF is of interest as a target for preventative strategies, but it is not known if it is a homogenous syndrome. The objective of this study was to compare the longitudinal trajectories of two PF groups: one defined by exhaustion and/or unexplained weight loss (PF1) and one defined by one or two of the following: weakness, slowness, low physical activity (PF2).

Methods: Design and setting
population-based longitudinal study of ageing.

Subjects
1,660 PF participants aged ≥50 years from wave 1 of the study (2010), followed 2-yearly over 4 longitudinal waves (2012, 2014, 2016, 2018).

Methods
Generalised Estimating Equations (GEE) were used to assess the effect of PF type across waves to predict cumulative mortality and disability in basic (ADL) and independent (IADL) activities of daily living, adjusting for baseline characteristics (age, sex, education, living alone, self-rated health, comorbidity, body mass index).

Results
In wave 1, there were 687 PF1 and 973 PF2 participants. By wave 5, 64 (9.3%) PF1 and 145 (14.9%) PF2 participants had died. In PF1 participants, mean numbers of ADL and IADL disabilities both increased from 0.2 to 0.3 from wave 1 to wave 5, whilst in PF2 increases were from 0.2 to 0.5. Adjusted GEE models suggested significantly divergent trajectories of IADL disability by wave 2, ADL disability by wave 3, and mortality by wave 4.

Conclusion
Prefrailty may not be a homogenous biological syndrome. This may have relevance for the design of interventions to delay or reverse frailty in populations.
30 Occupational Therapists Delivering Patient and Caregiver Home Safety Education in a Rehabilitation Setting
Authors: Webster Cara , Devine Monica , O'Connor Caoimhe , O'Brien Emma , O'Grady Edel , Murphy Joanne , O'Brien Claire , O'Gorman Eleanore 
Published: September 2019

Abstract

Background
The patient profile in a 160-bed rehabilitation hospital is evolving with increasing numbers of older adults admitted with falls and frailty. In 2018 a snapshot audit revealed over 60% of patients obtained scores indicative of cognitive impairment. Traditional falls prevention education delivered in a group format relies on attendees having an adequate level of sensory registration and cognitive abilities to comprehend and recall information given. The Occupational Therapists (OTs) proposed greater benefits from caregiver inclusion in such education to enhance understanding for both patients and caregivers on falls prevention and home environment modifications to facilitate safer home discharges.

Methods
A mixed-methods design was used. Quantitative data was gathered using a pre and post education 10-point Likert scale to assess attendees’ perceived knowledge in four domains: (1) Falls risk factors(2) Modifiable environmental factors(3) Managing falls(4) Accessing support/information to reduce risk of falls
Qualitative data was gathered through written feedback.
Referrals were generated by OTs. Evening sessions facilitated increased caregiver attendance. OTs delivered a 45 minute PowerPoint presentation, demonstrated adaptive equipment and engaged in discussion with attendees. Information packs were provided to caregivers including a Home Safety Assessment Tool to aid with home environment modification.

Results
Data from April 2018-2019 was analysed using Microsoft Excel. 21 groups were facilitated with 385 attendees overall.
Average percentage increase in knowledge in each of the four domains was 30%.
Overall knowledge increased by 32%.

Conclusion
Increased knowledge of modifiable falls risk factors and supporting persons at risk of falls in the home was demonstrated.
OTs reported reduced caregiver concerns regarding home environment modification. Home assessments completed after group attendance found caregivers had implemented recommendations made in the presentation.
Further data could be collected to measure the degree of environmental modification completed prior to OT home assessments. Additional qualitative data is required to fully assess benefits to both patients and caregivers.
33 “Striking Back Against Stroke”
Authors: Donaghy Lisa , Morrison Laura , Prendergast Julie , Dolan Eamon , O'Connor Marie 
Published: September 2019

Abstract

Background
2 million brain cells die every minute increasing the risk of permanent brain damage, disability or death. Despite the fact that IV Thrombolysis and Thrombectomy are now the standard of care, optimal rates of door to needle times and door to decision times have not been managed to be achieved throughout Ireland. There is a gap between what we know and what we do.
Treatment within a shorter time frame improves patient outcomes.
Aim: To reduce door to decision time for Thrombectomy to <30minutes in conjunction with the National Thrombectomy Quality Improvement Programme.

Methods
A Stroke Committee was set up consisting of a wider group of Stakeholders involved in FAST positive calls. A pre-audit of baseline times was conducted. Each step was mapped out in a process map and areas of delays were identified to reduce the overall KPI times.
Delays and areas for change:

Results
Door to CT times reduced from 37minutes to 22 minutes (↓ 15minutes) Door to CTA time reduced from 35 minutes to 28 minutes (↓ 7minutes) Door to Thrombolysis reduced from 65 minutes to 30 minutes (↓ 35 minutes) CTA to time of contact Beaumont (↓ 5minutes) Door to decision re: Thrombectomy or not reduced from 166 minutes to 24.5 minutes (↓ 141.5 minutes)

Conclusion
This is an ongoing process which continues to ultimately improve patient outcomes.
“Time is Brain”
62 Engaging Older Adults in Co-Creating a Virtual Coaching Assistant (CAPTAIN) to Support Independent Living at Home
Authors: Carroll Joanne , Hopper Louise 
Published: September 2019

Abstract

Background
As population age increases (CSO, 2016), the CAPTAIN project aims to prevent premature or unnecessary transfer to long-term residential care by offering a safe environment where older adults can retain their autonomy, dignity and independence. CAPTAIN (Coach Assistant via Projected and Tangible Interface) will develop a virtual eCoaching assistant to facilitate independence in the home using augmented reality projections, voice and speech recognition, artificial intelligence and a user interface designed by older adults with their peers in mind.

Methods
Using Design Thinking and participatory research principles, older adults (n=10), caregivers (n=3) and healthcare professionals (HCPs) (n=2) co-create the CAPTAIN system with the research team. Co-creation occurs in cycles. Two co-design cycles use participatory workshops to identify older adults’ needs through discussion of typical older adult ‘personas’, examine how technology can support these needs and translate these outputs into system requirements. Four co-production cycles will evaluate CAPTAIN prototypes (hardware and software) to determine the effectiveness of personalised recommendations, usability and acceptability. The evaluation (involves additional caregivers, HCPs and stakeholder groups) combines observed CAPTAIN use, system-generated data, self-report measures, participatory group workshops and one-to-one interviews.

Results
Participants found the personas helpful in terms of generating conversation in the co-design sessions. They confidently described older adult needs, suggested where technology could provide useful support, and features they thought CAPTAIN should offer. Requirements across seven thematic areas (health, nutrition, physical and cognitive activity, accessibility, social interaction, education and safety) have now been sent to technical developers. Data from each cycle will continue to inform the development of CAPTAIN until system completion.

Conclusion
Participant contributions have ensured the continued development of an accessible, easy-to-use assistive technology system that will facilitate independent living and support older adults “…to do the things they want to do, when they want to do them”.