Search results for: Johan Lind

Items from 1 to 20 out of 32 results

article

Students’ ideas about technological systems interacting with human needs

Johan Lind, Susanne Pelger, Anders Jakobsson

International Journal of Technology and Design Education > 2019 > 29 > 2 > 263-282

Technology is a compulsory subject at Swedish elementary schools and, according to the syllabus, helps students develop their ability to examine different technological solutions and reason how these solutions affect society, environment, and humans. An important challenge for educational research is to analyse and understand the consequences and impacts of technologies on students’ learning, well-being,...

article

‘Aesop's fable’ experiments demonstrate trial-and-error learning in birds, but no causal understanding

Stefano Ghirlanda, Johan Lind

Animal Behaviour > 2017 > 123 > C > 239-247

Experiments inspired by Aesop's fable The crow and the pitcher have been suggested to show that some birds (rooks, Corvus frugilegus, New Caledonian crows, Corvus moneduloides, and Eurasian jays, Garrulus glandarius) understand cause–effect relationships pertaining to water displacement. For example, the birds may prefer to drop stones in water rather than in sand in order to retrieve a floating food...

article

Considering dynamic soil-structure interaction in design of high-speed railway bridges

Johan Lind Östlund, Mahir Ülker-Kaustell, Andreas Andersson, Jean-Marc Battini

Procedia Engineering > 2017 > 199 > C > 2384-2389

This article presents preliminary theoretical results on the influence of dynamic soil-structure interaction (SSI) of slab foundations. Impedance functions, representing the dynamic SSI, were obtained from FE-models depicting the soil for a few cases of different geotechnical preconditions. The obtained impedance functions were attached to single-span bridges and HSLM-A analyses were performed. The...

chapter

Impaired Predator Evasion in the Life History of Birds: Behavioral and Physiological Adaptations to Reduced Flight Ability

Johan Lind, Sven Jakobsson, Cecilia Kullberg

Current Ornithology > Current Ornithology Volume 17 > 1-30

Because the failure to escape a predator causes death to a prey animal, and thus excludes opportunities to reproduce in the future, predation is a major selective force in nature (e.g., Lima and Dill 1990; Dawkins and Krebs 1979). To evade attacks from an array of different predators successfully is thus of key importance for all potential prey organisms. In most animals there are periods in their...

article

Animal memory: A review of delayed matching-to-sample data

Johan Lind, Magnus Enquist, Stefano Ghirlanda

Behavioural Processes > 2015 > 117 > Complete > 52-58

We performed a meta-analysis of over 90 data sets from delayed matching-to-sample (DMTS) studies with 25 species (birds, mammals, and bees). In DMTS, a sample stimulus is first presented and then removed. After a delay, two (or more) comparison stimuli are presented, and the subject is rewarded for choosing the one matching the sample. We used data on performance vs. delay length to estimate two parameters...

article

Corrigendum to “Coevolution of intelligence, behavioral repertoire, and lifespan” [Theoret. Popul. Biol. 91 (2014) 44–49]

Stefano Ghirlanda, Magnus Enquist, Johan Lind

Theoretical Population Biology > 2014 > 97 > Complete > 57

article

Erratum to “Coevolution of intelligence, behavioral repertoire, and lifespan” [Theor. Popul. Biol. 91 (2014) 44–49]

Stefano Ghirlanda, Magnus Enquist, Johan Lind

Theoretical Population Biology > 2014 > 96 > Complete > 19

article

Coevolution of intelligence, behavioral repertoire, and lifespan

Stefano Ghirlanda, Magnus Enquist, Johan Lind

Theoretical Population Biology > 2014 > 91 > Complete > 44-49

Across many taxa, intriguing positive correlations exist between intelligence (measured by proxy as encephalization), behavioral repertoire size, and lifespan. Here we argue, through a simple theoretical model, that such correlations arise from selection pressures for efficient learning of behavior sequences. We define intelligence operationally as the ability to disregard unrewarding behavior sequences,...

article

Peripheral growth hormone induces cell proliferation in the intact adult rat brain

N. David Åberg, Johan Lind, Jörgen Isgaard, H. Georg Kuhn

Growth Hormone & IGF Research > 2010 > 20 > 3 > 264-269

Growth hormone (GH) and insulin-like growth factor I (IGF-I) increase cell genesis in several regions of the brains of GH-IGF-I-deficient hypophysectomized rats. However, it is not known to what degree GH treatment stimulates adult cell genesis in pituitary-intact rodents. We investigated the effect of peripheral administration of bovine growth hormone (bGH) on cellular proliferation in various regions...

article

Predator‐hunting success and prey vulnerability: quantifying the spatial scale over which lethal and non‐lethal effects of predation occur

Will Cresswell, Johan Lind, John L. Quinn

Journal of Animal Ecology > 79 > 3 > 556 - 562

1. The shape of the function linking predator‐attack success rate with distance to predator‐concealing cover, or prey refuge, will affect population dynamics, distribution patterns and community trophic structure. Theory predicts that predator‐attack success should decline exponentially with distance from predator‐concealing cover, resulting in a threshold distance value above which there is little...

article

The Reaction of Ozone with the Hydroxide Ion: Mechanistic Considerations Based on Thermokinetic and Quantum Chemical Calculations and the Role of HO₄⁻ in Superoxide Dismutation

Gábor Merényi, Johan Lind, Sergej Naumov, Clemens von Sonntag

Chemistry – A European Journal > 16 > 4 > 1372 - 1377

The reaction of OH⁻ with O₃ eventually leads to the formation of ^.OH radicals. In the original mechanistic concept (J. Staehelin, J. Hoigné, Environ. Sci. Technol.1982, 16, 676–681), it was suggested that the first step occurred by O transfer: OH⁻+O₃→HO₂⁻+O₂ and that ^.OH was generated in the subsequent reaction(s) of HO₂⁻ with O₃ (the peroxone process). This mechanistic concept has now been revised...

article

Vigilance benefits and competition costs in groups: do individual redshanks gain an overall foraging benefit?

Alex Sansom, Will Cresswell, Jeroen Minderman, Johan Lind

Animal Behaviour > 2008 > 75 > 6 > 1869-1875

Animals gain antipredation benefits from being in larger groups through increased probability of predator detection, dilution of individual risk of being attacked and confusion of predators during attack. A further benefit is that individuals in larger groups can decrease the amount of time they spend being vigilant, while maintaining a high probability of predator detection. They may then gain extra...

article

Kinetic Effects of Hydrogen Bonds on Proton-Coupled Electron Transfer from Phenols

Martin Sjödin, Tania Irebo, Josefin E. Utas, Johan Lind, more

Journal of the American Chemical Society > 2006 > 128 > 40 > 13076 - 13083

article

Kinetic and Thermodynamic Properties of the Aminoxyl (NH ₂ O ^• ) Radical

Johan Lind, Gábor Merényi

The Journal of Physical Chemistry A > 2006 > 110 > 1 > 192 - 197

article

Anti-predation behaviour during bird migration; the benefit of studying multiple behavioural dimensions

Johan Lind, Will Cresswell

Journal of Ornithology > 2006 > 147 > 2 > 310-316

Predation and predation risk have recently been shown to have profound effects on bird migration, but we still know relatively little about how birds respond to predation risk en route and how this is translated into fundamental aspects of optimal migration. Here, we make the case that to understand the fitness consequences of foraging and anti-predation behaviour en route we cannot rely on single...

article

Crypsis versus intimidation—anti-predation defence in three closely related butterflies

Adrian Vallin, Sven Jakobsson, Johan Lind, Christer Wiklund

Behavioral Ecology and Sociobiology > 2006 > 59 > 3 > 455-459

Butterflies that hibernate exhibit particularly efficient defence against predation. A first line of defence is crypsis, and most hibernating butterflies are leaf mimics. When discovered, some species have a second line of defence; the peacock, I. io, when attacked by a predator flicks its wings open exposing large eyespots and performs an intimidating threat display. Here we test the hypothesis that...

article

Chemistry of Peroxynitrites as Compared to Peroxynitrates

Sara Goldstein, Johan Lind, Gábor Merényi

Chemical Reviews > 2005 > 105 > 6 > 2457 - 2470

article

The general link between random scissions in linear polymers, changes in average chain length and the Mark-Houwink equation

Erik E. Johansson, Johan Lind

Polymer Degradation and Stability > 2005 > 88 > 2 > 159-167

Theories for random scission degradation of polymers are motivated from the basic scientific interest in reaction kinetics and yields of process. There is a tradition to derive scission-measures (bond consumption or cleavage) from the number average of chain length in a molecular weight distribution. It is understood by many that the validity of these derivations will be conditional and many attempts...

article

What determines probability of surviving predator attacks in bird migration?: the relative importance of vigilance and fuel load

Johan Lind

Journal of Theoretical Biology > 2004 > 231 > 2 > 223-227

Migrating birds must accumulate fuel during their journeys and this fuel load should incur an increased risk of predation. Migratory fuelling should increase individual mass-dependent predation risk for two reasons. First, acquisition costs are connected to the increased time a bird must spend foraging to accumulate the fuel loads and the reduced predator detection that accompanies foraging. Second,...

article

Reaction of Organic Peroxyl Radicals with ^• NO ₂ and ^• NO in Aqueous Solution: Intermediacy of Organic Peroxynitrate and Peroxynitrite Species

Sara Goldstein, Johan Lind, Gabor Merenyi

The Journal of Physical Chemistry A > 2004 > 108 > 10 > 1719 - 1725

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Search results for: Johan Lind

Students’ ideas about technological systems interacting with human needs

‘Aesop's fable’ experiments demonstrate trial-and-error learning in birds, but no causal understanding

Considering dynamic soil-structure interaction in design of high-speed railway bridges

Impaired Predator Evasion in the Life History of Birds: Behavioral and Physiological Adaptations to Reduced Flight Ability

Animal memory: A review of delayed matching-to-sample data

Corrigendum to “Coevolution of intelligence, behavioral repertoire, and lifespan” [Theoret. Popul. Biol. 91 (2014) 44–49]

Erratum to “Coevolution of intelligence, behavioral repertoire, and lifespan” [Theor. Popul. Biol. 91 (2014) 44–49]

Coevolution of intelligence, behavioral repertoire, and lifespan

Peripheral growth hormone induces cell proliferation in the intact adult rat brain

Predator‐hunting success and prey vulnerability: quantifying the spatial scale over which lethal and non‐lethal effects of predation occur

The Reaction of Ozone with the Hydroxide Ion: Mechanistic Considerations Based on Thermokinetic and Quantum Chemical Calculations and the Role of HO₄⁻ in Superoxide Dismutation

Vigilance benefits and competition costs in groups: do individual redshanks gain an overall foraging benefit?

Kinetic Effects of Hydrogen Bonds on Proton-Coupled Electron Transfer from Phenols

Kinetic and Thermodynamic Properties of the Aminoxyl (NH ₂ O ^• ) Radical

Anti-predation behaviour during bird migration; the benefit of studying multiple behavioural dimensions

Crypsis versus intimidation—anti-predation defence in three closely related butterflies

Chemistry of Peroxynitrites as Compared to Peroxynitrates

The general link between random scissions in linear polymers, changes in average chain length and the Mark-Houwink equation

What determines probability of surviving predator attacks in bird migration?: the relative importance of vigilance and fuel load

Reaction of Organic Peroxyl Radicals with ^• NO ₂ and ^• NO in Aqueous Solution: Intermediacy of Organic Peroxynitrate and Peroxynitrite Species

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