This document evaluates the DNDC model's ability to predict nitrous oxide emissions from Irish agriculture by comparing modeled outputs to field measurements from a spring barley field and grazed pasture. For the barley field, modeled fluxes matched measured fluxes well for high fertilizer inputs but underestimated fluxes from low/zero fertilizer treatments. For the pasture, modeled fluxes overestimated emissions due to overestimating the effect of soil organic carbon. Sensitivity analysis found temperature to be the main determinant of emissions. The model predicted increases in emissions of 30-60% for the barley field and 20% for pasture by 2061-2090 due to climate change.
The community detection in complex networks has attracted a growing interest and is the subject of several
researches that have been proposed to understand the network structure and analyze the network
properties. In this paper, we give a thorough overview of different community discovery strategies, we
propose taxonomy of these methods, and we specify the differences between the suggested classes which
helping designers to compare and choose the most suitable strategy for the various types of network
encountered in the real world.
This document evaluates the DNDC model's ability to predict nitrous oxide emissions from Irish agriculture by comparing modeled outputs to field measurements from a spring barley field and grazed pasture. For the barley field, modeled fluxes matched measured fluxes well for high fertilizer inputs but underestimated fluxes from low/zero fertilizer treatments. For the pasture, modeled fluxes overestimated emissions due to overestimating the effect of soil organic carbon. Sensitivity analysis found temperature to be the main determinant of emissions. The model predicted increases in emissions of 30-60% for the barley field and 20% for pasture by 2061-2090 due to climate change.
The community detection in complex networks has attracted a growing interest and is the subject of several
researches that have been proposed to understand the network structure and analyze the network
properties. In this paper, we give a thorough overview of different community discovery strategies, we
propose taxonomy of these methods, and we specify the differences between the suggested classes which
helping designers to compare and choose the most suitable strategy for the various types of network
encountered in the real world.
This document provides a summary of the March 2009 issue of Optics & Photonics News magazine. The cover story discusses how integrated photonics will be needed for optical networks to continue scaling to meet increasing internet demands. Other articles explore optical fiber sensors for high-temperature conditions, how amateur astronomy is producing professional-quality data, and a biography of C.V. Raman and his discovery of the Raman effect. The issue also includes regular sections on industry news, innovations, opinions, and the history of OSA.
This summary provides the key details from the document in 3 sentences:
The document describes the similarities between how a walrus can climb icy surfaces and how flies can climb vertical glass surfaces, explaining that they are both able to do so through using their bodies to create a vacuum that allows atmospheric pressure to adhere their feet. It then provides an explanation of atmospheric pressure and how removing air from one side of a surface creates pressure, before relating this back to how walruses and flies are able to overcome gravity.
The document summarizes a course on scientometrics and bibliometrics attended by Susan Veldsman, Louise van Heerden, and Ina Smith at Stellenbosch University from March 23-26, 2015. It covered definitions of bibliometrics and scientometrics, the history and structure of bibliometrics, limitations of the journal impact factor, comparing bibliometric data sources like Web of Science and Scopus, using bibliometrics to map and evaluate science, and the relationships between science, innovation, and society. Speakers included Professors Robert Tijssen and Johann Mouton who discussed how bibliometrics can be applied in research evaluation, mapping fields, and measuring the impact and collaboration in
The document discusses the concept of presence in online communication and social networks. It defines presence as the exposure of personal states to others and awareness of others' states through ambient communication. It describes how presence has evolved from features like away messages to modern microblogging. Common ways presence is used include managing attention, facilitating casual interactions, providing a sense of activity, and allowing self-expression. The document outlines different types of presence and models for conceptualizing presence information in systems. It provides examples of how presence is implemented and consumed in technologies like Skype, Facebook, and online learning platforms.
The document discusses the benefits of exercise for both physical and mental health. Regular exercise can improve cardiovascular health, reduce symptoms of depression and anxiety, enhance mood, and boost brain health. Staying physically active helps fight diseases, increases energy levels, promotes better sleep, and reduces stress.
This document contains a list of 100 greatest surf rock songs from various artists such as The Beach Boys, Jan & Dean, Dick Dale & the Del-Tones, and The Ventures. It also includes several links to compilations and collections of surf rock music available for download through file sharing websites like RapidShare and MegaUpload. Many of the compilation titles referenced contain surf hits from the 1960s and aim to capture the nostalgic beach party atmosphere of that era.
1. The document appears to be a collection of letters, numbers, and symbols with no clear meaning. It includes sections that are not in any known human language.
2. There are a few words that appear to be names or places such as "ACE", "DA", and "BL", but no context is provided.
3. The majority of the text consists of unintelligible characters, numbers, and graphics that provide no discernible information on their own.
En 1988, 1.962 camas de hospitales públicos madrileños estuvieron vacías a pesar de un aumento del 4,15% en camas disponibles. El gasto farmacéutico aumentó un 23% entre 1987 y 1988. La ocupación hospitalaria varió entre distintos centros, desde un 90,55% en el Hospital Clínico hasta un 41,09% en el Hospital Niño Jesús.
The document provides details about an upcoming robot sumo competition hosted by roboVITics. It outlines 3 rounds: 1) a qualifying round where robots must push a 1.5kg weight out of a ring, 2) a one-on-one elimination round between robots, and 3) a "royal rumble" round with 4 robots battling simultaneously. Rules specify dimensional limits of 35cm x 35cm x unlimited height and <5kg weight for robots. The competition aims to test robots' abilities to push or maneuver opposing robots out of the ring within time limits.
This document summarizes a doctoral thesis that examines how irradiation can help prevent ischemia and reperfusion injury. The thesis includes four papers that study the effects of irradiation on energy metabolism in rat skeletal muscle and hearts, as well as reactive oxygen species and nitric oxide in human monocytes. The studies find that irradiation helps preserve high-energy phosphates like ATP and phosphocreatine during ischemia, improves energetic recovery after ischemia/reperfusion, and decreases reactive oxygen species while increasing nitric oxide in monocytes. Overall, the thesis demonstrates the protective effects of irradiation against ischemia/reperfusion injury in various experimental models.
This document discusses methods for collecting reliable data on user behavior from online social networks. It reviews previous research that has collected social network data through OSN APIs/crawling, surveys/questionnaires, and custom application deployment. The authors argue that these methods can produce biased data as they often only collect publicly shared content or rely on self-reported information. The authors propose combining existing methods, specifically the Experience Sampling Method, to collect more reliable data by capturing both shared and non-shared user behaviors and contexts through in situ experiments.
O documento descreve a competência de diferentes tipos de justiça no Brasil: 1) Justiça Eleitoral julga crimes eleitorais; 2) Justiça Militar julga crimes militares e crimes contra instituições militares; 3) Justiça Federal julga crimes políticos, contra a União, e ambientais que afetam bens federais.
What Random House anticipates will be the biggest books for group discussion coming up in Fall 2011. (Presented to 600+ librarians via ALA Booklist webinar on 7/26)
TELE-satellite is the world's largest digital TV trade magazine with a global readership of over 350,000 professionals. It was established in 1981 and is published in 20 languages. The magazine covers topics related to satellite TV, cable TV, IPTV, streaming media and other digital television technologies. It provides industry news, product reviews and reports on companies and events.
The document tests and evaluates several models of SPAUN SCR multiswitches. It finds that their performance matches the technical specifications. Signal quality at the outputs is very good, with clean signals and modulation error ratios only slightly higher than at the inputs. The multiswitches support fast channel switching. They come in different models to suit various installation needs, and allow reliable signal distribution to multiple receivers.
This document discusses high-frequency filters and their benefits. It provides examples of how different types of filters work, including high-pass filters, low-pass filters, band-pass filters, and band-rejection filters. It also describes common applications of these filters, such as eliminating interference, providing separate frequency bands to different receivers, and preventing certain customers from accessing premium cable channels. Key parameters for filters are also defined, including attenuation, bandwidth, cut-off frequency, and insertion loss.
1) The document tests and reviews the Icecrypt S3700CHD triple tuner PVR HD receiver.
2) It finds that the receiver has a fast new generation CPU, supports recording two channels while watching a third, and motor settings can be copied between satellites.
3) Testing showed the receiver found over 1700 TV channels and 400 radio channels in a blind scan of HOTBIRD, but does not support the newer DVB-T2 standard for terrestrial reception.
GlobalInvacom's fibre optic integrated reception system (FibreIRS) has connected over 2 million homes in the past 5 years since its introduction. The system transmits satellite signals through fibre optic cables, allowing signals to travel farther and connect to more receivers than traditional coaxial cables. GlobalInvacom continues developing new FibreIRS products, recently introducing a system that can connect up to 4,096 homes from one satellite dish. The company has also expanded into transmitting terrestrial TV signals and sees growing markets in Europe, the Middle East, and Southeast Asia.
The document describes how to set up a homemade IPTV system using a Raspberry Pi and TSReader Pro software. Key points:
1. A Raspberry Pi is used as the IPTV receiver due to its low cost and small size. It can turn any TV into a media center when running XBMC software.
2. TSReader Pro software is used on a PC to receive TV channels and stream them individually over the network via multicast to the Raspberry Pi.
3. An M3U playlist file lists the streamed channels and their IP addresses and ports so that XBMC on the Raspberry Pi can display the channel guide and allow channel surfing.
The proposed extensions to the DVB-S2 satellite communication standard aim to increase data rates and spectral efficiency. This includes reducing transponder roll-off factors and side lobes to allow transponders to be placed closer together, utilizing spectrum more efficiently. A new 64-APSK modulation scheme and additional modulation and coding options provide flexibility to optimize throughput. Wideband transponders using the full 72 MHz bandwidth could increase efficiency threefold over traditional 27.5 MHz transponders. These extensions may provide up to 20% higher data rates for direct broadcast applications and up to 64% for professional point-to-point links. The improvements will help enable services like ultra-high definition television that require high data throughput via satellite.
ELNET is a leading digital TV wholesaler and retailer in Iceland. It offers a wide range of digital TV products from small DVB meters to large DVB transmitters at its 600 square meter facility. Asmundur Einarsson, the general manager, says they must carry a broad product selection due to Iceland's small population of 300,000 spread across a large geographic area. The company was established in 1982 and involved in Iceland's digital terrestrial TV rollout, supplying around half of the country's transmitters. While satellite dishes remain popular sellers, ELNET expects growing demand for fiber optic distribution systems in coming years as their price difference with coax systems narrows.
The document provides a two-part test report on the Deviser S7000 multi-norm digital TV signal analyzer:
1. In Part 1, the analyzer's functions are introduced, including real-time spectrum analysis, remote control via PC/mobile, and suitability for MPEG2 and MPEG4.
2. Part 2 details testing results, finding measurement values very similar to five reference analyzers. Alignment of a motorized antenna using waterfall diagrams is demonstrated to be easy.
3. Troubleshooting interference in a CATV distribution is described, identifying a faulty splitter easily using the S7000's analog transponder analysis.
The Brazilian digital TV Internet forum BSD has been in operation for 10 years and sees 400,000 visitors monthly. Forum founder Marcos Benni has established a new office and plans to launch an online store called bsdshop.com.br featuring product demonstration videos. Benni will offer satellite dishes, LNBs, receivers and related equipment. In addition to his online business, Benni maintains the forum as a major information resource on digital TV in Brazil and operates satellite dishes from his office to test channels.
The Amiko Mini HD is a compact DVB-S2 HDTV receiver measuring only 15 x 11 x 3.5 cm. It has every feature of larger receivers, including a USB port for PVR recording, integrated network features like YouTube and Google Maps, and HDMI output up to 1080p. The receiver can automatically detect satellite signals and programs. It has a well-organized interface and supports various video and audio formats for playback. While it has some limitations, the Amiko Mini HD provides full PVR functionality in a small package.
1. The document tests and reviews the AB IPBox Prismcube Ruby, a new HDTV PVR satellite receiver with a media center built around the Xbox Media Center operating system.
2. It has a variety of features including support for multiple satellite and Internet TV standards, integrated DiSEqC protocols, customizable menus in 51 languages, and compatibility with digital television.
3. The receiver performed well in tests, with a channel scan completing in under five minutes and finding over 1700 channels, and strong signal reception from satellites across Europe and the Middle East.
The document summarizes a test signal generator called the Handheld Satcom Test Source produced by WORK Microwave. It can generate signals from 50-180 MHz and 950-2150 MHz with precision, making it suitable for calibrating test equipment and measuring parameters of high-frequency converters. The generator has two independent synthesizers allowing it to supply two signals simultaneously for measuring intermodulation. It also allows flexible setting of output levels for measurements like compression point and conversion gain. The generator includes rechargeable batteries, software control, and integrates smoothly with Windows operating systems.
This document is the September-October 2013 issue of TELE-audiovision International magazine. It includes summaries of signal analyzers, satellite receivers, amplifiers and other digital television equipment. It also provides reports on companies in the digital TV industry and summaries of recent industry events and technology trends. TELE-audiovision is the world's largest digital television trade magazine with over 350,000 readers globally.
Speedcast is a large satellite uplink system operator located in Barueri, São Paulo, Brazil. It operates seven large satellite dishes and provides uplink services for major Brazilian television channels. Speedcast was the first company to provide high definition television uplink services in Brazil in 2008. It currently employs 34 people and has established itself as a leader in the television uplink field in Brazil over the past 10 years.
The SPAUN SUS 5581/33 NF LEGACY and SUS 5581 F SCR multiswitches were tested and found to perform excellently. They allow distributing satellite signals from a quad LNB to over 16 receivers via a single coaxial cable without additional cables. Measurements showed output power and signal quality were maintained within specifications, even when signals passed through both multiswitches in series. Channel zapping was also faster than most receivers. The SPAUN multiswitches provide a flexible and easy way to add satellite TV to an existing small cable network.
Öreind is a digital TV wholesaler located in Kopavogur, Iceland that has been in business for 25 years. It was founded by two partners, Baldur Sveinsson and Sigurour Gunnarsson, who began by importing satellite components from Europe and installing satellite reception systems. Öreind now generates 40% of its revenue from satellite components, 10% from terrestrial antennas, 20% from repairs, and 30% from IPTV components as it looks to expand in this area of the market. The company remains focused on providing installation materials and servicing for satellite TV, terrestrial, and emerging IPTV systems to customers in Iceland.
1. The MKTech IS1-19HD is a hybrid satellite and terrestrial PVR receiver that supports both DVB-S2 and ISDB-T.
2. It has a removable hard drive frame, fast channel changing, robust software, and strong support for networked features after connecting to the internet via ethernet or included WiFi dongle.
3. While the review praised most aspects of the receiver, it noted that the WiFi connection does not allow manual input of the SSID for hidden networks.
1. The document tests and reviews the Horizon HD-CM+ signal meter for DVB-C networks.
2. It finds the meter to be very easy to use, with a clear display and intuitive menu navigation. It also includes many useful accessories and allows custom channel allocation plans to be downloaded.
3. Testing showed the meter provided accurate measurements of signal levels, MER and BER that closely matched the readings from another professional signal meter.
Ultra high definition television (UHDTV) provides significantly higher resolution than HDTV through two standards - 4K UHDTV which doubles the resolution of HDTV, and 8K UHDTV which quadruples the resolution. UHDTV also improves on HDTV by allowing wider color gamuts and higher frame rates up to 120 frames per second. However, UHDTV requires much greater bandwidth for transmission and most current infrastructure and devices are not compatible with UHDTV standards. While the technology and standards are still in development, UHDTV is expected to eventually become mainstream as the new standard for television.
