Location estimation

Xem 1-20 trên 56 kết quả Location estimation
  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Nonparametric Bayesian Filtering for Location Estimation, Position Tracking, and Global

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  • Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2008, Article ID 317252, 14 pages doi:10.1155/2008/317252 Research Article Nonparametric Bayesian Filtering for Location Estimation, Position Tracking, and Global Localization of Mobile Terminals in Outdoor Wireless Environments Mohamed Khalaf-Allah Institute of Communications Engineering, Faculty of Electrical Engineering and Information Technology, Leibniz University of Hannover, Appelstrasse 9A, 30167 Hannover, Germany Correspondence should be addressed to Mohamed Khalaf-Allah, mohamed.

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Application of Beamforming in Wireless Location Estimation

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  • The efficient management and sharing of the spectrum among the users is an important issue, frequency channels have to be reused as much as possible in order to support the many thousands of simultaneous call in any typical of mobile system. In cellular architecture, cell is serviced by a base station located at its center. A number of cells are linked to a mobile switching center which also acts as a gateway of the cellular network to

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  • The purpose of this study was to estimate travel time under incident conditions on a freeway. This paper presents a cellular automaton model that mimics traffic conditions and estimates travel times from upstream locations through the incident bottleneck, given an estimate of the incident duration.

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  • Invasive alien plants are harmful non-native plant species whose introduction or spread threatens the environment, the economy, and society, including human health. They can be introduced into Canada from other countries or continents, or from one region of Canada to another. The current threats posed by invasive alien plants are real and growing. Why are invasive alien plants a problem? The economic cost of invasive alien plants to Canadians is enormous. Weeds in crops and pastures alone cost an estimated $2.2 billion annually.

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  • In Salah – In Salah Gas is a joint venture between BP (33 percent), Sonatrach (35 percent) and Statoil (32 percent). The project comprises a phased development of eight gas fields located in the Ahnet-Timimoun Basin in Algerian Central Sahara. The initial development focuses on the exploitation of the gas reserves in the three northern fields. These gas fields contain CO2 concentrations ranging from one to nine percent, which is above the export gas specification of 0.3 percent and, therefore, requires CO2 removal facilities.

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  • Moreover, one's labour market status may be expected to have a (reverse) causal effect on current and future health. In this paper we analyse the relative importance of these endogeneity and measurement issues in the context of a model of early retirement decisions. We state assumptions under which we can use relatively simple methods to assess the relative importance of state dependent reporting errors in individual responses to health questions. The estimation results indicate that among respondents...

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  • Radio frequency identification (RFID) is a technology that is rapidly gaining popularity due to its several benefits in a wide area of applications like inventory tracking, supply chain management, automated manufacturing, healthcare, etc. The benefits of implementing RFID technologies can be seen in terms of efficiency (increased speed in production, reduced shrinkage, lower error rates, improved asset tracking etc.) or effectiveness (services that companies provide to the customers).

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  • Some previous studies have looked at whether the structure of the mortgage market plays a role in the propagation of monetary policy shocks. Calza et al (2009) and Assenmacher-Wesche and Gerlach (2010) nd that higher mortgage market development amplies the effects of monetary policy shocks on housing variables. Both studies estimate panel VARs across two groups of countries, classied according to their degree of mortgage market development using various cross-sectional indicators. Our approach is similar to theirs but differs in three important ways.

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  • A distinguishing feature of the water quality problem is that environmental damages— that is, the costs to society of pollution—are highly dependent on the location of pollution sources in the hydrological, social, and economic landscape. First, the demand for water quality varies from location to location. Some waterbodies are envisioned as pristine, where recreation and species support is the overriding concern.

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  • Breaking waves on the sea cause the ejection of many tiny droplets of seawater into the atmosphere. These droplets dry by evaporation leaving sea salt particles suspended in the air. Particles are also directly emitted by the bursting of air bubbles on sea surface Such particles are generally in the size range between 1 to 20µm. [19]. Whilst these particles are, in the main, rather coarse in size, a minor part of their mass is in particles small enough to have an appreciable atmospheric lifetime, which has been estimated as three days [20].

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  • Raising revenue amid the recent budget crisis State government tax revenues across the country declined dramatically following the Great Recession: between the middle of 2008 and 2009, real tax collections fell 18 percent. Declining revenues and increasing demands on public services combined to create extremely large budget gaps. With a very slow economic recovery, state budget gaps have persisted. The projected gap in Rhode Island is an estimated $117 million for 2013; for all states it is $47 billion. ...

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  • Quirra is a small village located in the south-eastern part of the Italian Sardinia Island (Sardegna), in the centre of the Mediterranean Sea. It is close to the sea shores (Capo San Lorenzo), and surrounded by other small villages like Perdasdefogu and Escalaplano. In that area, it is located the biggest military polygon of Italy and Europe, the "Poligono sperimentale di addestramento interforze del Salto Quirra" (“Salto di Quirra Polygon” and firing range).

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  • There has been extensive past work on node localization as well as event tracking in sensor networks (see [23] for a survey). These systems differ in the way they obtain range measurements, propa- gate location estimates transitively, utilize positive versus negative information, and represent potential node locations. Range measurements can be obtained through simple connectiv- ity, signal strength, time of arrival, time difference of arrival or an- gle of arrival measurements. Recent work has examined heuristics for performing range measurements via hop counts [13].

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  • With data provided by the tool, users can create a matrix to show industry employment location quotients above 1.2 for each county in the region and for the region as a whole. (A location quotient over 1.0 means that a region has a higher concentration of employment in a particular industry than the national average. Using a location quotient of 1.2 or more provides a conservative estimation for this example.) This matrix enables users to see the overall competitive strengths of the region, as well as those of individual counties.

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  • The chemistry of bamboo is important in determining its utilization potential. Several studies have investigated the chemical composition of bamboo. But systematic and thorough research on a commercially important bamboo species is needed to determine utilization potential for the products such as medium density fiberboard (MDF). Most of previous studies provide either only general information of several bamboo species or focuses on only one aspect of one species.

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article TSI Finders for Estimation of the Location of an Interference Source Using an Ariborne Array

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  • In order to clarify the assumptions underlying our empirical strategy, we present a model of wages as it relates to the decision to obtain an MBA. The decision to obtain an MBA is modelled similarly to the labor market program participation models discussed in Heckman et al. (1999). The purpose of the model is to clarify the assumptions under which the fixed effects estimate of the returns to an MBA can be appropriately interpreted as the treatment on the treated.

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  • As a companion to this study, the USA Freedom Corps and the Corporation for National and Community Service partnered with the Bureau of Labor Statistics in 2002 and again in 2003 to add questions about volunteering to the Current Population Survey (CPS) for the month of September. The CPS results provide context for some of the findings in the volunteer management capacity study. The 2003 CPS survey indicates that an estimated 63.8 million Americans (28.

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