Search results for "Human factor"

A Saturation Model of the Synchronous Reluctance Motor and its Identification by Genetic Algorithms

2018

This paper proposes a complete saturation model of the Synchronous Reluctance Motor (Syn1231), accounting for both the self-saturation and cross-saturation effects. This model is based on an analytical relationship between the stator flux and current components, and is characterized by parameters presenting an interesting physical interpretation, differently from many other saturation model in the scientific literature. It proposes also an identification technique of such a model based on stand-still tests, without the need of locking the rotor. The proposed saturation model permits the complete description of the magnetic behaviour of the machine with 8 parameters, fewer than those require…

High Immunoglobulin A Levels Mediate the Association Between High Anger Expression and Low Somatic Symptoms in Intimate Partner Violence Perpetrators.

2014

It has been hypothesized that anger expression may be associated with increased salivary immunoglobulin A (sIgA) levels, which is associated with decreased somatic symptoms, and therefore anger expression may be associated with reduced somatic symptoms in intimate partner violence (IPV) perpetrators. This study tested the potential mediating effect of sIgA levels on the relationship between anger expression and respiratory and gastrointestinal symptoms in IPV perpetrators and non-violent controls. The sample consisted of IPV perpetrators ( n = 19) and controls ( n = 21). Saliva samples were collected for assessing sIgA levels. The State-Trait Anger Expression Inventory–2 was used to assess…

Ergonomics Awareness and Employee Performance: An Exploratory Study

2017

The study examined the effects of ergonomics on employee performance by ascertaining the level of ergonomics awareness in Nigerian organizations, identifying the factors hindering the use of ergonomic, and the best practices and methods adopted by various organizations across industries. Despite a knowledge of importance to a growing number of researchers in Nigeria, there is still a dearth in knowledge of ergonomics design and its implementation in Nigeria. This can be observed in the low level of its adoption. The study adopted an exploratory approach through the review of literature. It was seen that several factors have hindered the efficient implementation of ergonomics in Nigeria whic…

Improvement of accessibility for the disabled in university restaurants

2003

AMELIORATION DE L’ACCESSIBILITE DE RESTAURANTS UNIVERSITAIRES A DES HANDICAPES Une etude a ete realisee en vue d’ameliorer l’acces des handicapes aux 19 restraurants universitaires de Valence en Espagne, puisque le taux des etudiants handicapes, ces trois dernieres annees universitaires, est de l’ordre de 0,12 a 0,13 %. Au debut de cette etude, 16 etablissements disposaient d’un acces correct avec un pourcentage de 87,5, 25 et 6,3 concernant respectivement les rampes, les ascenseurs et les balustrades. En outre, toutes les portes d´acces de ces etablissements etaient equipees des poignees a leviers, ou etaient concues de sorte qu’une prise serree et qu’une torsion du poignet ne soient pas n…

Errors and Complications in SQL Query Formulation

2018

SQL is taught in almost all university level database courses, yet SQL has received relatively little attention in educational research. In this study, we present a database management system independent categorization of SQL query errors that students make in an introductory database course. We base the categorization on previous literature, present a class of logical errors that has not been studied in detail, and review and complement these findings by analyzing over 33,000 SQL queries submitted by students. Our analysis verifies error findings presented in previous literature and reveals new types of errors, namely logical errors recurring in similar manners among different students. We…

Rings for privacy: An architecture for privacy-preserving user profiling

2014

Schema-Based Visual Queries over Linked Data Endpoints

2019

We present the option to use the schema-based visual query tool ViziQuer over realistic Linked Data endpoints. We describe the tool meta-schema structure and the means for the endpoint schema retrieval both from an OWL ontology and from a SPARQL endpoint. We report on a store of the endpoint-specific schemas and the options to support the schema presentation to the end-user both as a class tree within the environment and as external visual diagram.

Self-service Ad-hoc Querying Using Controlled Natural Language

2016

The ad-hoc querying process is slow and error prone due to inability of business experts of accessing data directly without involving IT experts. The problem lies in complexity of means used to query data. We propose a new natural language- and semistar ontology-based ad-hoc querying approach which lowers the steep learning curve required to be able to query data. The proposed approach would significantly shorten the time needed to master the ad-hoc querying and to gain the direct access to data by business experts, thus facilitating the decision making process in enterprises, government institutions and other organizations.

Pseudo-haptic Controls for Mid-air Finger-based Menu Interaction

2019

Virtual Reality (VR) is more accessible than ever these days. While topics like performance, motion sickness and presence are well investigated, basic topics as VR User Interfaces (UIs) for menu control are lagging far behind. A major issue is the absence of haptic feedback and naturalness, especially when considering mid-air finger-based interaction in VR, when "grabbable" controllers are not available. In this work, we present and compare the following two visual approaches to mid-air finger-based menu control in VR environments: a planar UI similar to common 2D desktop UIs, and a pseudo-haptic UI based on physical metaphors. The results show that the pseudo-haptic UI performs better in t…

Crowdboard: Augmenting in-person idea generation with real-time crowds

2017

Online crowds can help infuse creativity into the design process, but traditional strategies for leveraging them, such as large-scale ideation platforms, require time and organizational effort in order to obtain results. We propose a new method for crowd-based ideation that simplifies the process by having smaller crowds join in-person ideators during synchronous creative sessions. Our system Crowdboard allows online crowds to provide real-time creative input during early-stage design activities, such as brainstorming or concept mapping. The system enables in-person ideators to develop ideas on a physical or digital whiteboard which is augmented with real-time creative input from online par…