scholarly journals Songbird migration across the Sahara: the non-stop hypothesis rejected!

2006 ◽  
Vol 274 (1610) ◽  
pp. 735-739 ◽  
Author(s):  
Heiko Schmaljohann ◽  
Felix Liechti ◽  
Bruno Bruderer
Keyword(s):  
Energy Loss ◽  
High Temperatures ◽  
Bird Migration ◽  
Autumn Migration ◽  
Night Time ◽  
Western Sahara ◽  
The World ◽  
Intermittent Flight ◽  
Western Palaearctic ◽  
Songbird Migration

Billions of songbirds breeding in the Western Palaearctic cross the largest desert of the world, the Sahara, twice a year. While crossing Europe, the vast majority use an intermittent flight strategy, i.e. fly at night and rest or feed during the day. However, it was long assumed that they overcome the Sahara in a 40 h non-stop flight. In this study, we observed bird migration with radar in the plain sand desert of the Western Sahara (Mauritania) during autumn and spring migration and revealed a clear prevalence of intermittent migration. Massive departures of songbirds just after sunset independent of site and season suggests strongly that songbirds spent the day in the plain desert. Thus, most songbirds cross the Sahara predominately by the intermittent flight strategy. Autumn migration took place mainly at low altitudes with high temperatures, its density decreased abruptly before sunrise, followed by very little daytime migration. Migration was highly restricted to night-time and matched perfectly the intermittent flight strategy. However, in spring, when migratory flights occurred at much higher altitudes than in autumn, in cool air, about 17% of the songbird migration occurred during the day. This suggests that flying in high temperatures and turbulent air, as is the case in autumn, may lead to an increase in water and/or energy loss and may prevent songbirds from prolonged flights into the day.

La sensazione e il vortice del sonno

2020 ◽  
Vol 22 ◽  
pp. 385-397
Author(s):  
Tommaso Tuppini ◽  
Keyword(s):  
Night Time ◽  
Time Space ◽  
The World ◽  
The Subject

We typically conceive of sensation as a residue of empiricism and idealism, both of which claim to reduce our experience to a sum of elementary data that the subject encounters. For Merleau-Ponty, sensation is none of these things: it defines our ability to let ourselves be solicited by the relief and questions of the world. What is sensed is not an inert datum but a gesture of existence that concerns me, invites me to correspond to it and follow it. When I respond to the invitations of what I sense, the connection between me and the world functions as the immobile axis around which the whirls of a whirlwind are formed. Whirlwind of sensation or whirlwind of sleep, because sensing is also made of a night time-space in which the connection with things seem to be broken. The inertia of sleep is whirling in its own way, just as the dynamism of sensation has its own condition of possibility in an immeasurable measure of apathy and indifference.

The flood resilience dashboard: community resilience

2021 ◽  
Author(s):  
Ian McCallum ◽  
Stefan Velev ◽  
Finn Laurien ◽  
Reinhard Mechler ◽  
Adriana Keating ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Spatial Data ◽  
Forest Cover ◽  
Community Resilience ◽  
Mobile Technologies ◽  
Capacity Assessment ◽  
Night Time ◽  
Web Mapping ◽  
Crowdsourced Data ◽  
The World

<p>Communities around the world in flood-prone regions are increasingly aware of the benefits of using spatial data to better understand their predicament. With the advent of web mapping, free and open satellite data and the proliferation of mobile technologies, the possibilities for both understanding and improving community resilience are on the rise.</p><p>Here we present the “Flood Resilience Dashboard”, which is designed to put geo-spatial flood resilience data into the hands of practitioners. The objective is to provide a platform for practitioners in the Zurich Flood Resilience Alliance which gives access to both community resilience data and freely available, peer reviewed flood risk data, which can be used for decision support at scale. This data will include among others the Zurich Flood Resilience Measurement for Communities (FRMC) data, Vulnerability Capacity Assessment (VCA) maps, remote sensing derived information on flooding and other biophysical datasets (e.g. forest cover, water extent), modelled risk information, satellite imagery (e.g. night-time lights), crowdsourced data and more. Using two case studies, we illustrate how the above-mentioned datasets help to better understand community resilience. When co-developed with communities, these examples could potentially be scaled up and applied to similar regions around the world.</p>

The Beau Monde

2020 ◽  
pp. 41-62
Author(s):  
Rohan McWilliam
Keyword(s):  
Nineteenth Century ◽  
Popular Music ◽  
Detailed Analysis ◽  
Popular Song ◽  
Night Time ◽  
The West ◽  
The World

Chapter 3 explores the world of elite leisure in both its high and low forms to uncover how the aristocracy continued to shape the West End in the first half of the nineteenth century. This chapter is devoted to nightlife and is intended to show that one purpose of pleasure districts was to construct the idea of the night-time economy. The chapter explores the world of gentlemens’ clubs and other locations of masculine pleasure before moving into an examination of opera, ballet, and gambling; both sources of aristocratic networks. The second half of the chapter then looks at the world of low life in the Covent Garden and Maiden Lane areas; territory of the ‘flash’ and the bohemians. Affluent gentlemen explored what they saw as the ‘underworld’. Here was a world of disreputable bars and spaces for popular song. There is a detailed analysis of venues such as the Cider Cellars which shaped the development of popular music and culture with its bawdy ballads.

scholarly journals TWAN: The World at Night

2009 ◽  
Vol 5 (S260) ◽  
pp. 354-357
Author(s):  
Babak A. Tafreshi
Keyword(s):  
Time Lapse ◽  
Historic Sites ◽  
Night Time ◽  
The World ◽  
Special Project ◽  
Night Sky

AbstractThe World at Night (TWAN) is a global program to produce, collect, and present stunning photographs and time-lapse videos of the world's most beautiful and historic sites against the night-time backdrop of stars, planets, and celestial events. TWAN is a bridge between art, science and humanity to bring the message of peace, concealed in the sky. Organised by “Astronomers Without Borders”, the project consist of world's best night sky photographers in over countries and coordinators, regional event organisers, and consultants. TWAN was also designated as a Special Project of the International Year of Astronomy 2009. While the project's global exhibitions and educational events peaked during IYA2009, TWAN is planned for long term in several phases and will continue to create and exhibit images in the next years.

VORTICES IN HIGH-TEMPERATURE STRING THEORY

1989 ◽  
Vol 04 (11) ◽  
pp. 1063-1067 ◽  
Author(s):  
G. CHAPLINE ◽  
F.R. KLINKHAMER
Keyword(s):  
Phase Transition ◽  
Free Energy ◽  
High Temperature ◽  
String Theory ◽  
High Temperatures ◽  
World Sheet ◽  
Genus Zero ◽  
Mass Gap ◽  
The World

We discuss the role of XY-like vortices on the world-sheet for the free energy of strings at high temperatures. There is a Kosterlitz-Thouless phase transition at the Hagedorn temperature, above which the vortices contribute to the free energy in genus zero and generate a mass gap. We speculate that high-temperature “string” theory could be essentially discrete.

scholarly journals PENGARUH PEKERJAAN KOKI DENGAN TERJADINYA DISFUNGSI EREKSI

2014 ◽  
Vol 2 (2) ◽  
Author(s):  
Marshella Bongkriwan ◽  
Benny Wantouw ◽  
Lusiana Satiawati
Keyword(s):  
Erectile Dysfunction ◽  
Sample Size ◽  
High Temperatures ◽  
Erectile Function ◽  
Descriptive Study ◽  
Daily Activities ◽  
Hormonal Factors ◽  
Normal Testis ◽  
The World

Abstract: Erectile dysfunction is a problem experienced by many men in the world. Spermatogenesis in the tubules seminiferi influenced by various factors for example, hormonal factors, inhibiting the function of epididymis, radiation and temperature. Spermatogenesis will be disrupted in the event of an increase in testicular temperature a few degrees of normal testicular temperature, that is 35ºC. The same effect can be found in daily activities when there is an increase in the heat of the environment such as a restaurant chef. This study is a descriptive study conducted in November 2013 to January 2014 with a sample size of 66 respondents. Interpretation of the 66 samples, obtained chef with normal erectile function by 7 people (10.6%), mild dysfunction none, mild-moderate dysfunction as many as 40 people (60.6%), moderate dysfunction 19 people (28.8%), and no severe dysfunction. The conclution of this study found that the chef job can cause erectile dysfunction, prevalence of erectile dysfunction in a chef that 89.4% with mild-moderate and the longer the men exposed to high temperatures can cause persistent erectile dysfunction. Keywords: chef jobs, erectile dysfunction.     Abstrak: Disfungsi ereksi merupakan masalah yang dialami oleh banyak pria di dunia.  Proses spermatogenesis didalam tubuli seminiferi dipengaruhi oleh berbagai faktor antara lain, faktor hormonal, penghambatan fungsi epididimis, radiasi dan faktor suhu. Spermatogenesis akan terganggu atau terhambat apabila terjadi peningkatan suhu testis beberapa derajat saja dari temperatur normal testis, yaitu 35ºC. Dampak yang sama dapat ditemukan pada rutinitas dan aktivitas sehari-hari ketika terjadi peningkatan panas dari lingkungan seperti koki restoran. Tujuan dari penelitian ini adalah untuk mengetahui apakah dapat terjadi disfungsi ereksi pada koki dan pengaruh pekerjaan koki terhadap terjadinya disfungsi ereksi. Penelitian ini adalah penelitian deskriptif yang dilakukan pada bulan November 2013 sampai Januari 2014 dengan besar sampel sebanyak 66 responden. Interpretasi dari 66 sampel, didapatkan koki dengan fungsi ereksi normal sebanyak 7 orang (10.6%), disfungsi ringan tidak ada, disfungsi ringan-sedang sebanyak 40 orang (60.6%), disfungsi sedang 19 orang (28.8%), dan disfungsi berat tidak ada. Kesimpulan dari penelitian ini didapatkan bahwa pekerjaan koki memiliki pengaruh terhadap disfungsi ereksi, prevalensi disfungsi ereksi pada koki yaitu 89.4% dengan derajat ringan-sedang hingga sedang dan semakin lama pria terpapar suhu tinggi terus-menerus dapat menyebabkan disfungsi ereksi. Kata kumci: pekerjaan koki, disfungsi ereksi.

scholarly journals Normalcy, Knowledge, and Nature in Mark Haddon's The Curious Incident of the Dog in the Night-Time

2013 ◽  
Vol 33 (3) ◽  
Author(s):  
Sarah Jaquette Ray
Keyword(s):  
Social Model ◽  
Social Constructions ◽  
The Novel ◽  
Main Character ◽  
Night Time ◽  
Social Model Of Disability ◽  
Language Knowledge ◽  
The World ◽  
Dominant Society ◽  
Human World

<p>This article analyzes Mark Haddon&rsquo;s 2003 novel, <em>The Curious Incident of the Dog in the Night-Time, </em>using a combination of both disability studies theory and ecocriticism.&nbsp; The author argues that the novel&rsquo;s main character, Christopher Boone, presents a social model of disability by challenging dominant society&rsquo;s treatment of him as &ldquo;not normal.&rdquo; Christopher is ostensibly diagnosed with Asperger&rsquo;s Syndrome, although the novel never explicitly labels him as disabled in any way. Through Christopher&rsquo;s views of nature, language, knowledge, and social constructions of disability, we learn that disability is an unstable category, and that dominant society can be disabling.&nbsp; Importantly, though, Christopher&rsquo;s critique of society is, as the author argues, fundamentally environmental. That is, Christopher&rsquo;s views of language, knowledge, and even the more-than-human world itself are central to his destabilization of the category of disability. Christopher&rsquo;s environmental sensibility and critique of society&rsquo;s disabling qualities emerge primarily through his discussions of language, which he finds suspect because it distances humans from the world it describes.&nbsp; Thus, the novel suggests that the disabling features of society that Christopher encounters are the same features that distance humans from nature, particularly through language.&nbsp;</p> <p><strong>&nbsp;</strong></p> <p><strong>Keywords:</strong> eco-phenomenology, ecocriticism, <em>The Curious Incident of the Dog in the Night-Time</em>, Asperger&rsquo;s Syndrome, nature, language, body, epistemology</p>

Low Cost Irrigation System for Domestic Crops Based on Arduino Uno and LabView

2015 ◽  
Vol 811 ◽  
pp. 189-193
Author(s):  
Víctor A. Flores ◽  
Wenceslao Eduardo Rodríguez ◽  
Adolfo Josue Rodríguez ◽  
Efraín Jaime ◽  
Oshiel Martínez ◽  
...  
Keyword(s):  
High Temperatures ◽  
Irrigation System ◽  
Low Cost ◽  
Control Device ◽  
Agricultural Area ◽  
Work Lives ◽  
The North ◽  
The World ◽  
Arduino Uno ◽  
Monitoring Platform

This research stems from the problematic present in many places in the World and more specifically where the members of this work lives: Tamaulipas (in the North of Mexico), it is one of the most important agricultural area in the country, but a serious problem in the region are the high temperatures around 40-45 Celsius degrees and the long periods of drought due to lack of rain [1], which is why a low-cost irrigation system for domestic crops based on rainwater storage is proposed using Arduino Uno as a control device for the electronic driver´s with the LabView as monitoring platform

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