scholarly journals Diurnal variation in the production of vocal information about food supports a model of social adjustment in wild songbirds

2019 ◽  
Vol 286 (1897) ◽  
pp. 20182740 ◽  
Author(s):  
F. Hillemann ◽  
E. F. Cole ◽  
S. C. Keen ◽  
B. C. Sheldon ◽  
D. R. Farine
Keyword(s):  
Social Adjustment ◽  
Radio Frequency Identification ◽  
Time Of Day ◽  
Food Detection ◽  
Bird Feeders ◽  
Frequency Identification ◽  
Response Measures ◽  
Group Members ◽  
Vocal Activity ◽  
Set Up

Wintering songbirds have been widely shown to make economic foraging decisions to manage the changing balance of risks from predation and starvation over the course of the day. In this study, we ask whether the communication and use of information about food availability differ throughout the day. First, we assessed temporal variation in food-related vocal information produced in foraging flocks of tits ( Paridae ) using audio recordings at radio-frequency identification-equipped feeding stations. Vocal activity was highest in the morning and decreased into the afternoon. This pattern was not explained by there being fewer birds present, as we found that group sizes increased over the course of the day. Next, we experimentally tested the underlying causes for this diurnal calling pattern. We set up bird feeders with or without playback of calls from tits, either in the morning or in the afternoon, and compared latency to feeder discovery, accumulation of flock members, and total number of birds visiting the feeder. Irrespective of time of day, playbacks had a strong effect on all three response measures when compared to silent control trials, demonstrating that tits will readily use vocal information to improve food detection throughout the day. Thus, the diurnal pattern of foraging behaviour did not appear to affect use and production of food-related vocalizations. Instead, we suggest that, as the day progresses and foraging group sizes increase, the costs of producing calls at the food source (e.g. competition and attraction of predators) outweigh the benefits of recruiting group members (i.e. adding individuals to large groups only marginally increases safety in numbers), causing the observed decrease in vocal activity into the afternoon. Our findings imply that individuals make economic social adjustments based on conditions of their social environment when deciding to vocally recruit group members.

scholarly journals Performance Evaluation of a Novel Animals Tracking System based on UHF RFID Technology

2013 ◽  
Vol 9 (1) ◽  
pp. 4 ◽  
Author(s):  
Luca Catarinucci ◽  
Luigi Patrono
Keyword(s):  
Radio Frequency Identification ◽  
Tracking System ◽  
Near Field ◽  
Uhf Rfid ◽  
Wide Range ◽  
Frequency Identification ◽  
Set Up ◽  
Received Signal Strength Indication ◽  
Localization And Tracking ◽  
Localization Data

The adoption of solutions based on Radio Frequency IDentification technology in a wide range of contexts is a matter of fact. In many situations, such as the tracking of small-size living animals, the straightforward use of commercial systems does not ensure adequate performance. Consequently, both the RFID hardware and the software control platform should be tailored for the particular application. In this work, the specific requirements of Near Field Ultra High Frequency RFID reader antennas suitable for small-size animal localization and tracking are identified and a control system in a LabVIEW environment is designed. Afterwards, both hardware and software solutions have been implemented and validated. In particular, an algorithm based on the measured Received Signal Strength Indication, in order to obtain precise localization data, was developed and validated. Finally, the set-up of a first working prototype involving built-in-lab reader antennas has been completed and tested. The achieved results prove the effectiveness of the proposed tracking system.

scholarly journals Feeder density enhances house finch disease transmission in experimental epidemics

2018 ◽  
Vol 373 (1745) ◽  
pp. 20170090 ◽  
Author(s):  
Sahnzi C. Moyers ◽  
James S. Adelman ◽  
Damien R. Farine ◽  
Courtney A. Thomason ◽  
Dana M. Hawley
Keyword(s):  
Radio Frequency Identification ◽  
Disease Transmission ◽  
Bacterial Pathogen ◽  
Pathogen Transmission ◽  
House Finch ◽  
Resource Subsidies ◽  
House Finches ◽  
Bird Feeders ◽  
Group Members ◽  
Radio Frequency Identification Devices

Anthropogenic food provisioning of wildlife can alter the frequency of contacts among hosts and between hosts and environmental sources of pathogens. Despite the popularity of garden bird feeding, few studies have addressed how feeders influence host contact rates and disease dynamics. We experimentally manipulated feeder density in replicate aviaries containing captive, pathogen-naive, groups of house finches ( Haemorhous mexicanus ) and continuously tracked behaviours at feeders using radio-frequency identification devices. We then inoculated one bird per group with Mycoplasma gallisepticum (Mg), a common bacterial pathogen for which feeders are fomites of transmission, and assessed effects of feeder density on house finch behaviour and pathogen transmission. We found that pathogen transmission was significantly higher in groups with the highest density of bird feeders, despite a significantly lower rate of intraspecific aggressive interactions relative to the low feeder density groups. Conversely, among naive group members that never showed signs of disease, we saw significantly higher concentrations of Mg-specific antibodies in low feeder density groups, suggesting that birds in low feeder density treatments had exposure to subclinical doses of Mg. We discuss ways in which the density of garden bird feeders could play an important role in mediating the intensity of Mg epidemics. This article is part of the theme issue ‘Anthropogenic resource subsidies and host–parasite dynamics in wildlife'.

Using Radio Frequency Identification for Indoor Location Identification Based on Power Level, Signal Strength and Fuzzy Method

2011 ◽  
Vol 15 (9) ◽  
pp. 1287-1298
Author(s):  
Rung-Ching Chen ◽  
◽  
Yu-Cheng Lin ◽  
Sheng-Ling Huang ◽  
Qiangfu Zhao
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Power Level ◽  
Academic Research ◽  
Signal Strength ◽  
Location Tracking ◽  
Position Location ◽  
Reference Tags ◽  
Frequency Identification ◽  
Set Up

In recent years, there has been a dramatic proliferation of research concerned with Radio Frequency Identification (RFID). RFID technologies are getting considerable attention not only from academic research but also from the applications for enterprise. One of the most important application issues prevailing throughout the last few decades of RFID application research is the indoor position location. Many researchers have used varied technologies to perform the action of indoor position location tracking. In our research, we propose a new method using RFID tags to perform indoor position location tracking. This method uses Received Signal Strength (RSS) to collect signal strengths from reference tags beforehand, and then uses the signal strengths to set up Power Level areas of range by reference tags. Next, using the signal strengths from the reference tags we match signal strengths with track tags. Finally, when the track tags are set up in indoor environments, they can find the position of neighboring reference tags by using the fuzzy set theory and an arithmetic mean to calculate the position location values; with this method we are able to break figures down to track tag position locations. We conducted this experiment to prove that our methodology can provide better accuracy than the LANDMARC system.

Intelligent Control Mining Management System in an Open Pit Based on GIS/GPS/GPRS/RFID

2011 ◽  
Vol 50-51 ◽  
pp. 663-668 ◽  
Author(s):  
Qing Hua Gu ◽  
Cai Wu Lu ◽  
Shi Gun Jing ◽  
Xin Ma
Keyword(s):  
Intelligent Control ◽  
Radio Frequency Identification ◽  
Management System ◽  
Programming Model ◽  
Open Pit ◽  
General Packet Radio Service ◽  
Global Positioning ◽  
Frequency Identification ◽  
Set Up ◽  
And Control

Using GIS(Geographic Information System), GPS(Global Positioning System), GPRS(General Packet Radio Service) and RFID(Radio Frequency Identification), an intelligent control mining management system in an open pit has been designed and developed. A linear programming model is set up in a practical application. By the model, the system can automatically draw up production plan of ore blending well every day. The system can monitor and dispatch open-pit trucks and shovels well, and can play back their historical paths. It can monitor and control the process of mining production in real time. By RFID, The system can also count the number of trucks’ delivery and shovels’ loading automatically. Experiments on real scenes show that the performance of this system is stable and can satisfy production standards of ore blending in open pits.

Contactless Payment with RFID and NFC

2010 ◽  
pp. 112-120
Author(s):  
Marc Pasquet ◽  
Delphine Vacquez ◽  
Joan Reynaud ◽  
Félix Cuozzo
Keyword(s):  
Radio Frequency Identification ◽  
Information Integration ◽  
Short Distance ◽  
Near Field ◽  
Management Tools ◽  
Reading Technology ◽  
Frequency Identification ◽  
Set Up ◽  
The Cost ◽  
Contactless Card

The radio frequency identification (RFID) reading technology enables the transfer, by radio, of information from electronic circuit to a reader, opened up some interesting possibilities in the area of epayment (Domdouzis, Kumar, & Anumba, 2007). Today, the near field communication technology (NFC) opens up even more horizons, because it can be used to set up communications between different electronic devices (Eckert, 2005). Contactless cards, telephones with NFC capacities, RFID tag have been developed in industry and the services (Bendavid, Fosso Wamba, & Lefebvre, 2006). They are similar, but, some major differences explain the specificity of these three applications and the corresponding markets. The label, or marker, is a small size electronic element that transmits, on request, its numerical identification to a reader. The RFID identification makes it possible to store and recover data at short distance by using these miniature markers or labels (see Figure 1) associated to the articles to identify. The cost of the label is only few centimes. An RFID system is made of labels, readers connected to a fixed network, adapted software (collection of information, integration, confidentiality...), adapted services, and management tools that allow the identification of the products through packing. Contactless smartcards (see Figure 2) contain a microprocessor that can communicate under a short distance with a reader similar to those of RFID technology (Khu-smith & Mitchell, 2002). The originality of NFC is the fact that they were conceived for the protected bilateral transmission with other systems. NFC respects the standard ISO-14443 (Bashan, 2003) and thus, can be used as a contactless card. It can be used as a contactless terminal communicating with a contactless card or another NFC phone (ISO-18092). Services available through NFC are very limited today, but many experiments are in progress and electronic ticketing experiences (subways and bus) started in Japanb. There are two types of NFC phones: The mono chip composed of only one chip for GSM services (called the SIM) and NFC services. In that case, an NFC service is dependent of the phone operator. • The dual chip shows a clear separation of the two functions within two different chips. That completely isolates the operator and allows independent NFC services… We define the technology standards, the main platforms and actors in the background section. The main trust develops some contactless payment applications, and analyses the benefits and constraints of the different solutions. The future trends section concerns the research and technology evolution in contactless payment applications.

Contactless Payment with RFID and NFC

2011 ◽  
pp. 715-721
Author(s):  
Marc Pasquet ◽  
Delphine Vacquez ◽  
Joan Reynaud ◽  
Félix Cuozzo
Keyword(s):  
Radio Frequency Identification ◽  
Information Integration ◽  
Short Distance ◽  
Near Field ◽  
Management Tools ◽  
Reading Technology ◽  
Frequency Identification ◽  
Set Up ◽  
The Cost ◽  
Contactless Card

The radio frequency identification (RFID) reading technology enables the transfer, by radio, of information from electronic circuit to a reader, opened up some interesting possibilities in the area of e-payment (Domdouzis, Kumar, & Anumba, 2007). Today, the near field communication technology (NFC) opens up even more horizons, because it can be used to set up communications between different electronic devices (Eckert, 2005). Contactless cards, telephones with NFC capacities, RFID tag have been developed in industry and the services (Bendavid, Fosso Wamba, & Lefebvre, 2006). They are similar, but, some major differences explain the specificity of these three applications and the corresponding markets. The label, or marker, is a small size electronic element that transmits, on request, its numerical identification to a reader. The RFID identification makes it possible to store and recover data at short distance by using these miniature markers or labels (see Figure 1) associated to the articles to identify. The cost of the label is only few centimes. An RFID system is made of labels, readers connected to a fixed network, adapted software (collection of information, integration, confidentiality...), adapted services, and management tools that allow the identification of the products through packing. Contactless smartcards (see Figure 2) contain a microprocessor that can communicate under a short distance with a reader similar to those of RFID technology (Khu-smith & Mitchell, 2002). The originality of NFC is the fact that they were conceived for the protected bilateral transmission with other systems. NFC respects the standarda ISO-14443 (Bashan, 2003) and thus, can be used as a contactless card. It can be used as a contactless terminal communicating with a contactless card or another NFC phone (ISO-18092). Services available through NFC are very limited today, but many experiments are in progress and electronic ticketing experiences (subways and bus) started in Japan.

scholarly journals Low cost audiovisual playback and recording triggered by radio frequency identification using Raspberry Pi

2014 ◽  
Author(s):  
Adam Z Lendvai ◽  
Çağlar Akçay ◽  
Talia Weiss ◽  
Mark F. Haussmann ◽  
Ignacio T Moore ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Behavioral Ecology ◽  
Radio Frequency Identification ◽  
Visual Information ◽  
Low Cost ◽  
Raspberry Pi ◽  
Male Tree ◽  
Frequency Identification ◽  
Nestling Begging ◽  
Set Up

Carrying out playbacks of visual or audio stimuli to wild animals is a widely used experimental tool in behavioral ecology. In many cases, however, playback experiments are constrained by observer limitations such as the time observers can be present, or the accuracy of observation. These problems are particularly apparent when playbacks are triggered by specific events or are targeted to specific individuals. We developed a low-cost automated playback/recording system, using two field-deployable devices: radio-frequency identification (RFID) readers and Raspberry Pi micro-computers. This system detects a specific passive integrated transponder (PIT) tag attached to an individual, and subsequently plays back the stimuli, or records audio or visual information. To demonstrate the utility of this system, we tagged female and male tree swallows from two box-nesting populations with PIT tags and carried out playbacks of nestling begging calls every time females entered the nestbox over a six-hour period. We show that the RFID-Raspberry Pi system presents a versatile, low-cost, field-deployable system that can be adapted for many audio and visual playback purposes. The low cost and the small learning curve make this set-up a feasible system for use by field biologists.

scholarly journals Low cost audiovisual playback and recording triggered by radio frequency identification using Raspberry Pi

2014 ◽  
Author(s):  
Adam Z Lendvai ◽  
Çağlar Akçay ◽  
Talia Weiss ◽  
Mark F. Haussmann ◽  
Ignacio T Moore ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Behavioral Ecology ◽  
Radio Frequency Identification ◽  
Visual Information ◽  
Low Cost ◽  
Raspberry Pi ◽  
Male Tree ◽  
Frequency Identification ◽  
Nestling Begging ◽  
Set Up

Carrying out playbacks of visual or audio stimuli to wild animals is a widely used experimental tool in behavioral ecology. In many cases, however, playback experiments are constrained by observer limitations such as the time observers can be present, or the accuracy of observation. These problems are particularly apparent when playbacks are triggered by specific events or are targeted to specific individuals. We developed a low-cost automated playback/recording system, using two field-deployable devices: radio-frequency identification (RFID) readers and Raspberry Pi micro-computers. This system detects a specific passive integrated transponder (PIT) tag attached to an individual, and subsequently plays back the stimuli, or records audio or visual information. To demonstrate the utility of this system, we tagged female and male tree swallows from two box-nesting populations with PIT tags and carried out playbacks of nestling begging calls every time females entered the nestbox over a six-hour period. We show that the RFID-Raspberry Pi system presents a versatile, low-cost, field-deployable system that can be adapted for many audio and visual playback purposes. The low cost and the small learning curve make this set-up a feasible system for use by field biologists.

RFID Personnel Control System That Can Be Managed Via 4.5G

2016 ◽  
Vol 2 (2) ◽  
pp. 396
Author(s):  
Abdülkadir ÇAKIR ◽  
Halil KAYGISIZ
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Rfid Technology ◽  
Rfid Tag ◽  
Internet Connection ◽  
Mobile Cellular ◽  
Frequency Identification ◽  
System Information ◽  
Set Up ◽  
Personnel Control

The current study aimed to reveal that personnel control by the employer should be conducted using Radio Frequency Identification (RFID) technology in an easier and more modular way. The most important feature differentiating the RFID from the existing technologies is that it works wirelessly. The hardware used in the study can be managed via Ethernet port. In this study, it is ensured that data be transmitted via Internet by using a mobile cellular communication system. The control of the set up system can be conducted wirelessly via any environment in which an Internet connection can be established. Thanks to the created system, information about arrival and departure dates of the places to where the mobile personnel should go can be monitored 24/7 from anywhere that has internet connection. As a result of the tests and applications that have been conducted, it has been seen that the data could not be transmitted in a radio-frequency environment because of the error caused by the RFID tag. As a result of the calculations made after the application, it has been put forward that the error margin is 7±1%.

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