Search results for "object"
showing 10 items of 1888 documents
Use of the Sperm-Class Analyser® for objective assessment of human sperm morphology
2003
The Sperm-Class Analyser was validated for assessing morphometric parameters of the head and midpiece of unwashed and washed human ejaculated spermatozoa from volunteers providing a wide range of semen quality. A higher proportion of sperm could be assessed (86% fresh semen and 75% washed sperm) if Hemacolor staining was used rather than DiffQuik (80 and 73%) or Papanicolaou (78 and 68%). Different stains employed different fixatives and the area, length, width and perimeter of the sperm head was significantly larger for washed sperm stained by Hemacolor and DiffQuik. Acrosomal area ranged from 48 to 51% of the sperm head area and this percentage was larger for washed sperm stained with Dif…
A geomorphological approach for enhancing environmental management and conservation of landforms as protected nature objects in the Upper Daugava spi…
2015
<p class="R-AbstractKeywords"><span lang="EN-GB">This paper describes the application of geomorphological approach for environmental management and conservation of landforms. Specifically, we discuss the contribution of geomorphological field survey and adapted matrix methodology (in combination with understanding of geology) to identification, study and evaluation of those abiotic nature elements which represent geological and geomorphological heritage. We describe a case study carried out in that part of the protected landscape area “Augšdaugava” which encompasses the Upper Daugava spillway valley. The study programme reported in this paper was realized to perform inventory of…
Philosophies de l'esprit objectif
2008
National audience
Diferencias de sexo en estrategias de aprendizaje de estudiantes online.
2018
Analizamos aquí las estrategias de aprendizaje empleadas por estudiantes universitarios, de modalidad online, en función del género. En primer lugar, se realiza una exhaustiva revisión de publicaciones que comparten el objeto de estudio, la mayoría de ellas difundidas en la última década y señalando los principales hallazgos de estas investigaciones. El objetivo del estudio es analizar tanto las estrategias empleadas como desvelar semejanzas y diferencias con respecto a modalidades presenciales. Metodológicamente optamos por realizar un diseño multimétodo, en el que el análisis cualitativo tiene como finalidad contribuir a la evaluación e interpretación de los resultados de tipo cuantitativ…
Nazwy drzew w śląskiej toponimii
2015
The paper deals with geographical names in Silesia deriving from the names of tree species. An analysis of the names derived from appellatives, allows for a reconstruction of the categorization methods of the world, anthropological conceptualization, and a popular image of reality. Name creators choose names derived from the appellatives which are for certain reasons important and valuable for them, from the existing collection of names. For example, the following names of trees and shrubs become a productive toponymic base: oak, birch, alder; they belong to the basic categorization level and are important for the rural community due to their usable and practical significance (in constructi…
Valutazione e personalizzazione a scuola: le prove oggettive di profitto
2022
La scelta delle modalità e degli strumenti di valutazione da impiegare con i propri allievi, in base a ciò che si vuole valutare e al perché, è uno dei compiti didattici dell’insegnante, la gamma di scelta è ampia; in questo intervento ci soffermeremo su alcuni aspetti connessi alla scelta e all’impiego di un tipo di prove per la valutazione del grado di conseguimento degli obiettivi di apprendimento previsti al termine di un’attività didattica, esse sono comunemente denominate prove oggettive di profitto volendo così sottolineare l’intento di ridurre il più possibile la soggettività dell’insegnante quando valuta i suoi alunni. The choice of assessment methods and tools to be used with your…
Movement Detection with Event-Based Cameras: Comparison with Frame-Based Cameras in Robot Object Tracking Using Powerlink Communication
2018
Event-based cameras are not common in industrial applications despite the fact that they can add multiple advantages for applications with moving objects. In comparison with frame-based cameras, the amount of generated data is very low while keeping the main information in the scene. For an industrial environment with interconnected systems, data reduction becomes very important to avoid network congestion and provide faster response time. However, the use of new sensors as event-based cameras is not common since they do not usually provide connectivity to industrial buses. This work develops a network node based on a Field Programmable Gate Array (FPGA), including data acquisition and trac…
On Constraint Handling in Surrogate-Assisted Evolutionary Many-Objective Optimization
2016
Surrogate-assisted evolutionary multiobjective optimization algorithms are often used to solve computationally expensive problems. But their efficacy on handling constrained optimization problems having more than three objectives has not been widely studied. Particularly the issue of how feasible and infeasible solutions are handled in generating a data set for training a surrogate has not received much attention. In this paper, we use a recently proposed Kriging-assisted evolutionary algorithm for many-objective optimization and investigate the effect of infeasible solutions on the performance of the surrogates. We assume that constraint functions are computationally inexpensive and consid…
Oral proficiency in second and third foreign languages in the Danish education system
2019
In this paper, we analyze how oral proficiency is understood in the Danish education system in the three biggest second/third foreign languages taught in the country: French, Spanish and German. We adopt a comparative perspective and analyze how orality is addressed in these language subjects at primary school, secondary school and university levels. We compare the three languages to find similarities and differences, focusing on learning objectives, pedagogical approaches and examination forms, presented in the official curricula for each of the three educational levels. We relate the Danish stance on oral proficiency to current international research in the field and to European tendencie…
Factory Workers' Ordinary User Experiences: An Overlooked Perspective
2018
Experiences with technology often are described as exciting and outstanding, for instance, in relation to novel technologies at home or at work. In this article, we aim to complement this perspective by emphasizing people’s mundane and ordinary experiences with technology, that is, unremarkable experiences happening in the background of people’s attention. Based on our investigations of user experience in a semiconductor factory, we show how such ordinary experiences are substantial in workers’ everyday interactions with technology, which are mainly shaped by repetitive activities and routines. However, current conceptions of user experience seem to overlook those mundane experiences and ho…