Search results for "evaluation"
showing 10 items of 1974 documents
Verifica dell’applicabilità del metodo irriguo sub-superficiale su colture agrumicole e ottimizzazione dell’uso della risorsa idrica
2020
Gli impianti di subirrigazione (SDI), in relazione alla posizione interrata dei gocciolatori permettono la riduzione dei consumi irrigui, garantendo la possibilità di utilizzo di risorse altrimenti non utilizzabili. Tuttavia, i costi di investimento iniziali risultano maggiori di quelli relativi ai tradizionali impianti di microirrigazione e pertanto, diventano economicamente vantaggiosi, se l'efficienza del sistema viene garantita per periodi di almeno 15-20 anni. La SDI, inoltre, permette di ottenere valori elevati di efficienza d’uso dell’acqua, spesso superiori al 90%, se associata ad un monitoraggio continuo dello stato idrico del suolo e della pianta e ad una corretta stima delle esig…
Usability of Programming Languages
2016
Programming languages form the interface between programmers (the users) and the computation that they desire the computer to execute. Although studies exist for some aspects of programming language design (such as conditionals), other aspects have received little or no human factors evaluations. Designers thus have little they can rely on if they want to make new languages highly usable, and users cannot easily chose a language based on usability criteria. This SIG will bring together researchers and practitioners interested in increasing the depth and breadth of studies on the usability of programming languages, and ultimately in improving the usability of future languages. nonPeerReviewed
Usability challenges in digital learning solutions
2015
Usability is a key element in successful software. Ensuring the technical usability of a learning solution enables users to focus on their main task, learning. The purpose of this paper is to demonstrate the results of heuristic usability evaluations of digital learning solutions. Heuristic evaluations were conducted on 24 digital learning solutions from one country (Finland) and two country groups (Asian countries and Spanish speaking countries) concentrating on the usability of the user interface of each evaluated solution. The main results of this study indicate that a few heuristics cover the majority of all usability problems (UPs) observed in learning solutions, but these heuristics c…
An empirical approach for evaluating the usability of model-driven tools
2013
MDD tools are very useful to draw conceptual models and to automate code generation. Even though this would bring many benefits, wide adoption of MDD tools is not yet a reality. Various research activities are being undertaken to find why and to provide the required solutions. However, insufficient research has been done on a key factor for the acceptance of MDD tools: usability. With the help of end-users, this paper presents a framework to evaluate the usability of MDD tools. The framework will be used as a basis for a family of experiments to get clear insights into the barriers to usability that prevent MDD tools from being widely adopted in industry. To illustrate the applicability of …
Overview of the Evalita 2014 SENTIment POLarity Classification Task
2014
International audience; English. The SENTIment POLarity Classification Task (SENTIPOLC), a new shared task in the Evalita evaluation campaign , focused on sentiment classification at the message level on Italian tweets. It included three subtasks: subjectivity classification, polarity classification, and irony detection. SENTIPOLC was the most participated Evalita task with a total of 35 submitted runs from 11 different teams. We present the datasets and the evaluation methodology, and discuss results and participating systems. Italiano. Descriviamo modalit a e risultati della campagna di valutazione di sistemi di sentiment analysis (SENTIment POLarity Classification Task), proposta per la …
Partially time invariant panel data regression
2023
When dealing with panel data, considering the variation over time of the variable of interest allows to get rid of potential individual effects. Even though the outcome variable has a continuous distribution, its variation over time can be equal to zero with a strictly positive probability and thus its distribution is a mixture of a mass at zero and a continuous distribution. We introduce a parametric statistical model based on conditional mixtures, build estimators for the parameters related to the conditional probability of no variation and to the conditional expectation related to the continuous part of the distribution and derive their asymptotic consistency and normality under a specif…
Evaluating the Evaluation. The pros and cons of ‘VQR’ in social and political research
2013
Between science and economic development, and in the name of democratic control over themanagement of public resources, governments have progressively gained a role in mechanisms of knowledge production. In severalcountries, the United Kingdom, Australia, and France being the most well known cases, this has resulted in various evaluationexercises. All have generated wide debate within the scientific community on the most appropriate methods and criteria to be used
Valsts pārvaldes cilvēkresursu rīcībpolitiku izvērtējums
2016
Darbā tiek analizētas divas rīcībpolitikas ar mērķi izvērtēt vai valsts pārvaldē nodarbināto darba izpildes novērtēšanas sistēma un valsts pārvaldē nodarbināto atlīdzības sistēmas ir sasniegušas sev izvirzītos mērķus un vai ir atrisinājušas sākotnēji definētās problēmas. Teorētiskajā daļā tika aplūkots rīcībpolitikas jēdziens, rīcībpolitikas cikls, rīcībpolitikas novērtēšanas pieejas, kā arī cilvēkresursu jautājumi – darbinieku novērtēšana un darbinieku atlīdzības sistēma. Empīriskajā daļā tika izmantotas dažādas pētnieciskās metodes – dokumentu analīze, anketēšana ministrijās, intervijas. Autore secina, ka novērtēšanas sistēma nav sasniegusi sev izvirzītos mērķus, bet ir atrisinājusi iepri…
Analyse des acquisitions des élèves de l'enseignement secondaire en Algérie sur la base de l'enquête MLA II
2006
06020; Rapport pour la Revue des dépenses publiques en République Algérienne et Populaire, réalisée par le Groupe pour le Développement socioéconomique. Région Moyen Orient et Afrique du Nord de la Banque Mondiale; Le rapport est basé sur l'analyse des résultats des élèves de 8ème année de l'enseignement secondaire en Algérie aux tests du MLAII (tests administrés en 2002). L'analyse présentée ici est de nature synthétique et cherche avant tout à dégager les facteurs principaux agissant sur les acquis des élèves. Il ne s'agit donc pas d'effectuer une description fine des acquis scolaires dans une optique pédagogique, mais plutôt de mettre en relation un certain nombre de variables centrales …
Tools for education : policy analysis
2003
03125http://www-wds.worldbank.org/servlet/WDSContentServer/WDSP/IB/2003/06/06/000094946_03052904033567/Rendered/PDF/multi0page.pdf; This hands-on, interactive guide to evaluating and revamping education policy is designed to help policymakers in low-income countries identify weakness and make the most efficient use of scarce education resources. Education specialist in the developed world will also find this guide to be an invaluable tool for analyzing priorities and arriving at cost-effective solutions. The out-growth of training workshops held at the World Bank, this book and CD-ROM present relevant policy problems and engage the user in a search for effective education-service delivery o…