Time filter

Source Type

Junge X.,University of Zürich | Junge X.,ART Agroscope Reckenholz Tänikon | Lindemann-Matthies P.,University of Zürich | Lindemann-Matthies P.,University of Education, Karlsruhe | And 2 more authors.
Biological Conservation | Year: 2011

Beyond its traditional function of food production, agricultural land offers public amenities such as the protection of natural resources and landscape scenery. This study investigates the preferences of non-farmers and farmers for nine landscape scenarios in the Swiss lowlands. The nine landscapes were the result of a photo editing process combining three land-use types (arable crops, grassland and a mixture of both) and three proportions of ecological compensation areas (0%, 10% and 30%). The landscape photographs were randomly arranged on one page of a paper-based questionnaire which was sent to a random sample of 4000 Swiss households (non-farmers) and 500 farmers. The respondents (1376 non-farmers and 276 farmers) rated each landscape by attractiveness. Both non-farmers and farmers preferred a mixed land-use type or one dominated by arable crops over one dominated by grassland. Non-farmers' preference ratings were highly influenced by the proportion of ecological compensation areas (ECAs) in the rated landscape: Non-farmers rated a landscape with a mixed land-use type and 30% ECAs highest, whereas farmers rated a landscape dominated by arable crops and 10% ECAs highest. The results indicate that heterogeneous landscapes (mixed land use, high proportion of ECAs) influence scenic beauty positively. Thus, farming practices and agro-environment schemes such as ECAs can have an impact on the visual attractiveness of a landscape. © 2011 Elsevier Ltd.


Peterhans E.,University of Konstanz | Worth A.,University of Education, Karlsruhe | Woll A.,Karlsruhe Institute of Technology
Journal of Adolescent Health | Year: 2013

Purpose: The aim of this study was to analyze the association between adolescent and familial health behavioral factors and cardiorespiratory fitness in German adolescent boys and girls. Methods: This study is based on a large nationwide cross-sectional study and its substudy on physical activity and fitness of children and adolescents ("Motorik-Modul"). For 1,328 adolescents between 11 and 17 years of age, data on cardiorespiratory fitness (Physical working capacity 170, PWC170) and familial and adolescent health behavioral factors were collected. Health behavior was assessed using psychometric questionnaires (socioeconomic status, pubertal stage, daily physical activity, sports-club time, parental physical activity habits, etc.). A hierarchical multiple regression model was used to quantify the association between relative PWC170 values and health behavior. Results: The relationship between adolescents' health behavioral factors and cardiorespiratory fitness was stronger than the relationship between age, social status, familial health behavior and cardiorespiratory fitness. Familial health behavioral factors explained 4.1% and 2.1% of variance in cardiorespiratory fitness in girls and boys, respectively. Adolescents' health behavioral factors explained 15.2% of variance in girls and 25.7% of variance in boys. For both girls (β =.273) and boys (β =.400), being normal weight had the greatest effect on relative PWC170 values. Conclusions: The difference in explained variance in cardiorespiratory fitness by familial and adolescents' health behavioral factors between girls and boys indicates that different predictors for cardiorespiratory fitness are important for girls and boys. Hence, sex specific research and interventions aimed at improving familial and adolescent health behavior may be important. © 2013 Society for Adolescent Health and Medicine. All rights reserved.


Lindemann-Matthies P.,University of Education, Karlsruhe | Marty T.,University of Zürich
Biological Conservation | Year: 2013

Private gardens can incorporate a diversity of habitats for wild species and also provide a valuable network for meta-populations. Recently, attempts have been made to promote garden practices that increase native biodiversity and structural heterogeneity relevant to plants and animals. However, little is known about whether such practices contribute to the aesthetic quality of gardens. This study was based on a survey of 36 garden owners in Switzerland, a species count in their gardens, and a photo-questionnaire with 249 Swiss residents who rated the attractiveness of the gardens. The gardens included a gradient from conventional orthodox (frequent lawn mowing and weeding, intensive use of pesticides and fertilizers) to ecological unorthodox (infrequent lawn mowing and weeding, no use of pesticides and fertilizers) gardening practices. Our results clearly show that scientific concepts of ecological quality can align with cultural concepts of aesthetic quality. The more ecologically managed a garden, the more species it contained. The more species the garden contained, the more attractive it was to the sample population. Aesthetically pleasing gardens were characterized by the public as natural and species-rich, whereas aesthetically displeasing gardens were characterized as boring, normal, and species-poor. Ecological gardening was not considered to be more time consuming than conventional gardening. A lack of practical know-how was a greater constraint. Respondents were tolerant towards ecological gardening, but would not want their garden to be considered as chaotic. © 2012 Elsevier Ltd.


Lindemann-Matthies P.,University of Education, Karlsruhe | Brieger H.,University of Education, Karlsruhe
Urban Forestry and Urban Greening | Year: 2016

We tested in two corresponding studies the hypothesis that urban gardening is of visual aesthetic value to the public. With the help of photo-realistic visualizations and a written questionnaire, 109 students and employees of the Karlsruhe University of Education (study 1) and 200 passers-by in the city of Karlsruhe (study 2) were asked about their opinion on different urban gardening scenarios, and attitudes towards urban gardening. Our results indicate that urban gardening can contribute to perceived attractiveness of urban areas, but that not all approaches are perceived as equally positive. While flowerbeds or flower meadows and orderly-managed vegetable plots, in comparison to conventional lawns, increased the aesthetic appeal of urban green space, container gardening approaches, which were often characterized as chaotic, did not. Although flower scenarios were preferred over vegetable scenarios, participants were rather positive about the idea of having more vegetable plots around. Socio-demographic variables had only minor influences on preferences and attitudes. As people were fonder of flowerbeds or flower meadows than of vegetable plots, a mixture of both might be advisable in urban gardening sites. This would also increase overall diversity, which is not only beneficial from an aesthetic, but also from an ecological point of view. © 2016 Elsevier GmbH.


The demand to create learning arrangements In which self-controlled learning is possible becomes increasingly urgent. The established German-language literature on projects names characteristics of self-controlled learning as central components of project-based instruction. Learners, on the other hand, consider themselves less selfcontrolled in project-oriented Instruction and their assessment is confirmed by that of the teachers. Thus, a discrepancy Is revealed between the expectations connected with selfcontrolled learning In project-based Instruction and its evaluation by both teachers and learners.


Borys T.,University of Education, Karlsruhe
International Journal of Science, Mathematics and Technology Learning | Year: 2014

Some mathematics school performance studies showed that German students have deficits in their math competence; other countries perform much better for example, Finland and Japan. Our research idea is to develop a concept for learning from the other countries. This concept is for students who study mathematics education, to improve their mathematical skills for teaching. In a first theoretical orientated step students compare different textbooks of several countries to a topic e.g. calculation of areas. The second step is a cooperation seminar. In this students from different countries develop together presentations about topics of mathematics in which they compare the different approaches of their countries. Finally, they present their results during an international teleconference. This article reports on possible ways occurring obstacles and uncertainties to implement a cooperation seminar with teleconferences. It refers to an experience of several years with cooperation seminars of the University of Education in Karlsruhe (Germany) with the University of Education in Kyoto and the Tamagawa Academy (K12) & University in Tokyo (Japan). © Common Ground, Thomas Borys.


Martens A.,University of Education, Karlsruhe
International Journal of Odonatology | Year: 2015

Zygonyx torridus inhabits waterfalls, rapids and riffle sections. Males patrol over these sites. After copulation the partners perform an extensive search while flying in tandem over a wide range. Behavioural studies in Mauritius 1997 and 2014 showed that there is considerable plasticity in oviposition behaviour. Three main modes could be distinguished: (A) egg-laying in tandem during flight; (B) the female placing the eggs while dipping in flight without physical contact with the male; and (C) the female placing the eggs when settled without physical contact with the male. On several occasions two modes, and in a single case all three types, were observed within one oviposition sequence. In odonates, such a high degree of plasticity in reproductive behaviour was not reported previously. © 2015, Worldwide Dragonfly Association.


Remmele M.,University of Education, Karlsruhe | Weiers K.,University of Education, Karlsruhe | Martens A.,University of Education, Karlsruhe
Computers and Education | Year: 2015

While learning biological topics constructing depictive representations may be the first step to a deeper understanding. The referred to as visualization type as well as interaction type are supposed to have influence on learning with multimedia applications. Comparing 3D and 2D visualizations (both in combination with written text), there is little evidence whether stereoscopic 3D visualizations better support the understanding of biological topics by constructing adequate depictive representations. Likewise, insufficient indication is given of how the interaction type impacts these results (e.g. the ability/disability to move and rotate the displayed object). Therefore, our study focused on an e-learning environment dealing with the anatomy and physiology of the nasal cavity. Here, either (1) text and 2D visualisations or (2) text and stereoscopic 3D visualisations were used - both in combination with two interaction types (interaction/no interaction). Research subjects were 144 eighth grade students at medium stratification level. During a working phase with the different multimedia applications (visualization type 2D/stereoscopic 3D and interaction type 'interaction'/'no interaction') the students were instructed to form the nasal cavity out of modeling clay. Finally, for both interaction types the 3D cohorts were by far more successful in representing anatomical details. Hence, stereoscopic 3D technology should be implemented in biological e-learning environments. © 2015 Elsevier Ltd.


Martens A.,University of Education, Karlsruhe
International Journal of Odonatology | Year: 2010

From 12 to 25 August 2009, the odonate fauna of Santo Antäo, Cape Verde was surveyed by recording adults and collecting larvae and exuviae at 26 localities, mostly situated in the northwest of the island. Based on the results of this survey and literature data on the Cape Verdes it appears that the resident odonate fauna consists of only five species, namely Anax imperator, Crocothemis erythraea, Orthetrum trinacria, Trithemis annulata and Zygonyx torridus. Three additional species, Anax ephippiger and Pantala flavescens, which were recorded as single adults in this study, and Sympetrum fonscolombii, which was previously recorded in another study, represent seasonal invaders that do not establish permanent populations on the island. Surprisingly, there is no zygopteran species recorded from the island, although a few occur on the neighbouring islands. The breeding habitats of the resident odonates on the island comprise short perennial stream sections in large wadi beds ('ribeiras') that are intensely used for agriculture, as well as artificial irrigation tanks. The odonate assemblage is very uniform, although Z. torridus prefers micro-habitats with flowing water and O. trinacria is found only in micro-habitats with fine sediments. In the absence of fish, crabs and large water beetles, the larva of A. imperator appears to be the top predator in freshwater habitats.


Libbrecht P.,University of Education, Karlsruhe
CEUR Workshop Proceedings | Year: 2012

Searching for mathematical concepts being indicated in a document is not easy with the existing technologies because the current information retrieval technology has been designed for words and mathematical concepts are often made of more than single words. Skills text box is an approach to this retrieval problem: it lets users use the classical search by words paradigm to search for the concept then identify it by choosing through a finite list. Skills text box is the device used to support the search engine of i2geo.net: At contribution and search time. In this paper for MathUI 2012, we sketch the current technical development Skills-text-box, and present its advantages and limits as have been experimented by multiple mathematics teachers in Europe.

Loading University of Education, Karlsruhe collaborators
Loading University of Education, Karlsruhe collaborators