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1

Aerosol Monitoring during Carbon Nanofiber Production: Mobile Direct-Reading Sampling  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Detailed investigations were conducted at a facility that manufactures and processes carbon nanofibers (CNFs). Presented research summarizes the direct-reading monitoring aspects of the study. A mobile aerosol sampling platform, equipped with an aerosol instrument array, was used to characterize emissions at different locations within the facility. Particle number, respirable mass, active surface area, and photoelectric response were monitored with a condensation particle counter (CPC), a pho...

Evans, Douglas E.; Ku, Bon Ki; Birch, M. Eileen; Dunn, Kevin H.

2010-01-01

2

Aerosol Monitoring during Carbon Nanofiber Production: Mobile Direct-Reading Sampling  

Science.gov (United States)

Detailed investigations were conducted at a facility that manufactures and processes carbon nanofibers (CNFs). Presented research summarizes the direct-reading monitoring aspects of the study. A mobile aerosol sampling platform, equipped with an aerosol instrument array, was used to characterize emissions at different locations within the facility. Particle number, respirable mass, active surface area, and photoelectric response were monitored with a condensation particle counter (CPC), a photometer, a diffusion charger, and a photoelectric aerosol sensor, respectively. CO and CO2 were additionally monitored. Combined simultaneous monitoring of these metrics can be utilized to determine source and relative contribution of airborne particles (CNFs and others) within a workplace. Elevated particle number concentrations, up to 1.15 × 106 cm?3, were found within the facility but were not due to CNFs. Ultrafine particle emissions, released during thermal treatment of CNFs, were primarily responsible. In contrast, transient increases in respirable particle mass concentration, with a maximum of 1.1 mg m?3, were due to CNF release through uncontrolled transfer and bagging. Of the applied metrics, our findings suggest that particle mass was probably the most useful and practical metric for monitoring CNF emissions in this facility. Through chemical means, CNFs may be selectively distinguished from other workplace contaminants (Birch et al., in preparation), and for direct-reading monitoring applications, the photometer was found to provide a reasonable estimate of respirable CNF mass concentration. Particle size distribution measurements were conducted with an electrical low-pressure impactor and a fast particle size spectrometer. Results suggest that the dominant CNF mode by particle number lies between 200 and 250 nm for both aerodynamic and mobility equivalent diameters. Significant emissions of CO were also evident in this facility. Exposure control recommendations were described for processes as required. PMID:20447936

Evans, Douglas E.; Ku, Bon Ki; Birch, M. Eileen; Dunn, Kevin H.

2010-01-01

3

Direct reading dosimeter  

International Nuclear Information System (INIS)

This invention is a direct reading dosimeter which is light, small enough to be worn on a person, and measures both dose rates and total dose. It is based on a semiconductor sensor. The gate threshold voltage change rather than absolute value is measured and displayed as a direct reading of the dose rate. This is effected by continuously switching the gate of an MOS transistor from positive to negative bias. The output can directly drive a digital readout or trigger an audible alarm. The sensor device can be a MOSFET, bipolar transistor, or MOSFET capacitor which has its electrical characteristics change due to the trapped charge in the insulating layer of the device

4

Analysis of soil extract solutions by direct reading emission spectrometry  

International Nuclear Information System (INIS)

A rapid spectrometric method was developed for the determination of trace and major elements in aqueous soil extract samples. The rotating disc technique with high voltage excitation was used in conjunction with a direct reading spectrometer. The procedure determines simultaneously zinc, cobalt, lead, copper, nickel, manganese and vanadium at concentrations of between 1 and 1000 mg l-1 together with calcium, magnesium, aluminium and iron at levels usually in excess of 1000 mg l-1. Lutetium is used as an internal standard. The coefficients of variation for all elements range between 2 and 15 per cent. (author)

5

Analytical laboratory and mobile sampling platform  

Energy Technology Data Exchange (ETDEWEB)

This is the final report for the Analytical Laboratory and Mobile Sampling Platform project. This report contains only major findings and conclusions resulting from this project. Detailed reports of all activities performed for this project were provided to the Project Office every quarter since the beginning of the project. This report contains water chemistry data for samples collected in the Nevada section of Death Valley National Park (Triangle Area Springs), Nevada Test Site springs, Pahranagat Valley springs, Nevada Test Site wells, Spring Mountain springs and Crater Flat and Amargosa Valley wells.

Stetzenbach, K.; Smiecinski, A.

1996-04-30

6

Analytical laboratory and mobile sampling platform  

International Nuclear Information System (INIS)

This is the final report for the Analytical Laboratory and Mobile Sampling Platform project. This report contains only major findings and conclusions resulting from this project. Detailed reports of all activities performed for this project were provided to the Project Office every quarter since the beginning of the project. This report contains water chemistry data for samples collected in the Nevada section of Death Valley National Park (Triangle Area Springs), Nevada Test Site springs, Pahranagat Valley springs, Nevada Test Site wells, Spring Mountain springs and Crater Flat and Amargosa Valley wells

7

Setting-Up of a Direct Reading Emission Spectrometer and Its Adaptation for Plutonium Handling.  

Science.gov (United States)

A Jarrell-Ash 750 AtomComp 1100 series direct-reading emission spectrometer was set up, and its performance features were checked with regard to analysis of uranium-based samples using d.c. arc/inductively coupled argon-plasma excitation techniques. The i...

A. G. Page, S. V. Godbole, M. J. Kulkarni, N. K. Porwal, S. K. Thulasidas

1986-01-01

8

Direct reading fast microwave interferometer for ELMO Bumpy Torus  

Science.gov (United States)

A simple and inexpensive 4-mm direct reading fast (rise time˜100 ?s) microwave interferometer is described. The system is particularly useful for density measurements on the ELMO Bumpy Torus (EBT) during pulsed operation.

Uckan, T.

1984-11-01

9

Direct reading fast microwave interferometer for ELMO Bumpy Torus  

Energy Technology Data Exchange (ETDEWEB)

A simple and inexpensive 4-mm direct reading fast (rise timeapprox.100 ..mu..s) microwave interferometer is described. The system is particularly useful for density measurements on the ELMO Bumpy Torus (EBT) during pulsed operation.

Uckan, T.

1984-11-01

10

Setting-up of a direct reading emission spectrometer and its adaptation for plutonium handling  

International Nuclear Information System (INIS)

A Jarrell-Ash 750 AtomComp 1100 series direct reading emission spectrometer was set up and its performance features were checked with regard to analysis of uranium-based samples using d.c. arc/inductively coupled argon plasma excitation techniques. The instrument has been subsequently modified to enable handling of plutonium-based samples. The modifications include building up of a specially designed glove-box around the excitation sources and consequent changes in the electro-mechanical controls associated with them. The modified system was extensively used for the trace metal assay of FBTR fuel sample. (author)

11

Direct reading spectrochemical analysis of nuclear graphite; Analisis espectroquimico de lectura directa de grafito nuclear  

Energy Technology Data Exchange (ETDEWEB)

A description is given about the application of a direct-reading spectrometer the Quantometer, to the determination of boron. calcium, iron, titanium and vanadium in nuclear grade graphite. for boron the powdered sample is mixed with 1% cupric fluoride and excited in a 10-amperes direct current arc and graphite electrodes with a crater 7 mm wide and 10 mm deep. For the other elements a smaller crater has been used and dilution with a number of matrices has been investigated; the best results are achieved by employing 25% cupric fluoride. The sensitivity limit for boron is 0,15 ppm. (Author) 21 refs.

Roca Adell, M.; Becerro Ruiz, E.; Alvarez Gonzalez, F.

1964-07-01

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A direct reading exposure monitor for radiation processing  

International Nuclear Information System (INIS)

Various plastic films have been utilized to measure radiation fields. In general such films are rugged, easily handled, small enough to cause negligible perturbation on the radiation fields, and relatively inexpensive. The radiachromic materials have been shown to have advantages over other plastic fabrications in stability, reproducibility, equivalent response to electron and gamma ray processing fields, dose rate independence, and ready availability of calibration standards. Using a nylon matrix radiachromic detector, a system of direct read-out of absorbed dose has been developed to facilitate monitoring in the megarad region. When an exposed detector is inserted into the reader, the optical transmission signal is processed through an analog to digital converter. The digitized signal addresses a memory bank where the standard response curve is stored. The corresponding absorbed dose is displayed on a digital panel meter. The variation of relative sensitivity of detectors, the background of unirradiated detectors, environmental parameters, and the capacity of the memory bank are contributing factors to the total precision of the read-out system. (author)

13

Balance Calibration – A Method for Assigning a Direct-Reading Uncertainty to an Electronic Balance.  

Energy Technology Data Exchange (ETDEWEB)

Paper Title: Balance Calibration – A method for assigning a direct-reading uncertainty to an electronic balance. Intended Audience: Those who calibrate or use electronic balances. Abstract: As a calibration facility, we provide on-site (at the customer’s location) calibrations of electronic balances for customers within our company. In our experience, most of our customers are not using their balance as a comparator, but simply putting an unknown quantity on the balance and reading the displayed mass value. Manufacturer’s specifications for balances typically include specifications such as readability, repeatability, linearity, and sensitivity temperature drift, but what does this all mean when the balance user simply reads the displayed mass value and accepts the reading as the true value? This paper discusses a method for assigning a direct-reading uncertainty to a balance based upon the observed calibration data and the environment where the balance is being used. The method requires input from the customer regarding the environment where the balance is used and encourages discussion with the customer regarding sources of uncertainty and possible means for improvement; the calibration process becomes an educational opportunity for the balance user as well as calibration personnel. This paper will cover the uncertainty analysis applied to the calibration weights used for the field calibration of balances; the uncertainty is calculated over the range of environmental conditions typically encountered in the field and the resulting range of air density. The temperature stability in the area of the balance is discussed with the customer and the temperature range over which the balance calibration is valid is decided upon; the decision is based upon the uncertainty needs of the customer and the desired rigor in monitoring by the customer. Once the environmental limitations are decided, the calibration is performed and the measurement data is entered into a custom spreadsheet. The spreadsheet uses measurement results, along with the manufacturer’s specifications, to assign a direct-read measurement uncertainty to the balance. The fact that the assigned uncertainty is a best-case uncertainty is discussed with the customer; the assigned uncertainty contains no allowance for contributions associated with the unknown weighing sample, such as density, static charges, magnetism, etc. The attendee will learn uncertainty considerations associated with balance calibrations along with one method for assigning an uncertainty to a balance used for non-comparison measurements.

Mike Stears

2010-07-01

14

Mobile laboratory - emergency sample analyses at the accident site  

International Nuclear Information System (INIS)

The Pacific Northwest Laboratory (PNL) provides technical support to the Department of Energy (DOE) with rapid response to the site of a radiological accident for initial assessment of radiological conditions in the surrounding environs. A mobile laboratory manned with a trained crew is capable of collecting, preparing, and analyzing air, liquid, vegetation, and soil samples from the areas surrounding the accident site. Rapid assessment of radiological conditions is important to enable responsible agencies to immediately administer appropriate response and coordinate any necessary longer-term management of the accident site. Sensitive instrumentation and support equipment provide the capability to rapidly assess environmental conditions for uncontrolled areas as stated in DOE Order 5480.1 Chapter XI. A regimen is required to maintain proficiency and to train new crew members. A professional team responding with a well-equipped mobile laboratory capable of providing quick analytical results has a positive impact on public relations. Confidence is also generated among other agencies with an awareness of the technical expertise that is available for assistance and backup in the event of a radiological accident

15

Plutonium Mobility Studies: 216-Z-9 Trench Sample Analysis Results  

Energy Technology Data Exchange (ETDEWEB)

A variety of analyses were conducted on selected sediment samples collected from two wells (299 W15-46 and 299-W15-48) drilled near the 216-Z-9 Trench to elucidate the form and potential for Pu and Am to be mobilized under present conditions and those that could be expected in future remediation scenarios. Analyses included moisture content, determination of the less than sand size fraction (silt plus clay), carbon analysis, SEM/EDS analysis, microwave-assisted acid digestions for total element analysis, and extraction tests using Hanford groundwater as the leachate. Results of the extraction tests were used as input to conduct equilibrium geochemical modeling of the solutions with Geochemist’s Workbench®. Geochemical modeling results for Pu were evaluated in terms of recent conclusions regarding the solubility and redox reactions of Pu by Neck et al. (2007a, 2007b). It was found that the highest concentrations of Pu and Am were associated with sediments of low silt/clay content and occur above silt/clay rich layers within the sediment profile. It was also found that the Pu and Am were relatively enriched in the silt/clay portion of these samples. The fact that the highest concentrations of Pu and Am occurred in sediments with low silt/clay contents suggests that waste solutions had perched on top of the low permeability silt/clay rich layers and interactions with the high silt/clay layers was minimal. SEM/EDS analysis indicated that the Pu and Am in these sediments does not occur as discrete micron size particles, and therefore must occur as mononuclear or polynuclear/ nanoclusters size particles adsorbed throughout the sediment samples. Leaching of these samples with Hanford groundwater indicates that release of Pu and Am from the sediments is correlated most significantly with the acidity of the water and not the initial concentrations of Pu and Am in the sediments. Only extracts that were acidic after contact with the sediments (pH 4.3 to 5.4) contained detectable concentrations of extractable Pu and Am. Water extracts from samples containing high concentrations of TBP suggest that if the TBP degradation products DBP and MBP are available in these sediments, they do not significantly increase the extractability of Pu or Am. Geochemical modeling results suggest that the concentrations of Am in water in contact with these sediments is not controlled by the solubility of Am(OH)3(c), but rather by desorption of Am that has been previously adsorbed to the sediments during the period of active wastewater disposal. Sediment extracts that had measureable concentrations of Am only occurred in samples that were fairly acidic (pH 4.3 to 4.6), indicating that Am will remain effectively sequestered to sediments when pH conditions approach those of normal Hanford groundwater (mildly alkaline, ~ pH 8). The geochemical modeling results indicate that Pu in acidic extracts is significantly undersaturated with respect to PuO2(am). However, recent reviews of Pu solubility and redox reactions suggest that the data used for these calculations is incomplete (Neck et al. 2007a, 2007b). The results of Neck et al. (2007a, 2007b) suggest that Pu concentrations in solutions in contact with the 216-Z-9 Trench sediment samples might be controlled by a mixed valent solid phase [(PuV)2x(PuIV)1-2xO2+x(am)] with various dissolved Pu(V) complexes and Pu(IV)O2(am) colloids or nanoclusters being the dominant species in solution for typical Hanford groundwater conditions. Adsorption is likely to have a major impact on the mobility of these species (Neck et al. 2007a, 2007b; Clark et al. 2006; Kaplan et al. 2006; Powell et al. 2005). Further research is planned to verify these hypotheses.

Cantrell, Kirk J.; Geiszler, Keith N.; Arey, Bruce W.

2008-09-05

16

Assessment of personal direct-reading dust monitors for the measurement of airborne inhalable dust  

Energy Technology Data Exchange (ETDEWEB)

The performances of five portable direct-reading dust monitors were investigated in a wind tunnel for a range of industrial dusts including wood dust and coal dust and three sizes of aluminum oxide test dust to mainly determine their suitability for measuring the inhalable fraction of airborne dust in workplaces. The instruments tested were Split 2 (SKC Ltd), Sidepak (TSI Inc.), Dataram (Thermo Electron Ltd), PDS-2 (Sibata Scientific Technology Ltd) and the Respicon TM (Hund Ltd). The instruments' responses were compared with reference dust samplers. Each monitor greatly underestimated the measurement of inhalable concentration for all the dusts tested, although the linearity was good over a wide range of concentrations for any particular size distribution of dust. However, their calibration factors, were especially sensitive to changes in particle size. The monitors generally overestimated the measurement of respirable dust concentration by up to a factor of about 2, apart from the PDS-2, which underestimated it by a factor of up to 3. There was, however, a great deal more scatter in the reference respirable concentration measurements owing to the collection of small dust samples. Therefore, monitor linearity and effects of monitor response to changes in particle size could not be accurately investigated for the respirable fraction. The sampling design of the head of the Split 2 monitor resulted in it underestimating the reference inhalable dust concentration, which meant that it could not be accurately used as a calibration standard. Communications with the manufacturers have since revealed that the sampling head has recently been redesigned in order to improve the seal and eliminate leakage. The Respicon sampler gravimetrically underestimated the inhalable dust concentration, and did so increasingly as the particle size increased.

Andrew Thorpe [Health and Safety Laboratory, Buxton (United Kingdom)

2007-07-01

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Industrial Component-based Sample Mobile Robot System  

Directory of Open Access Journals (Sweden)

Full Text Available The mobile robot development can be done in two different ways. The first is tobuild up an embedded system, the second is to use ‘ready to use’ industrial components.With the spread of Industrial mobile robots there are more and more components on themarket which can be used to build up a whole control and sensor system of a mobile robotplatform. Using these components electrical hardware development is not needed, whichspeeds up the development time and decreases the cost. Using a PLC on board, ‘only’constructing the program is needed and the developer can concentrate on the algorithms,not on developing hardware. My idea is to solve the problem of mobile robot localizationand obstacle avoidance using industrial components and concentrate this topic to themobile robot docking. In factories, mobile robots can be used to deliver parts from oneplace to another, but there are always two critical points. The robot has to be able tooperate in human environment, and also reach the target and get to a predefined positionwhere another system can load it or get the delivered product. I would like to construct amechanically simple robot model, which can calculate its position from the rotation of itswheels, and when it reaches a predefined location with the aid of an image processingsystem it can dock to an electrical connector. If the robot succeeded it could charge itsbatteries through this connector as well.

Péter Kucsera

2007-12-01

18

TANK VAPOR CHEMICALS OF POTENTIAL CONCERN and EXISTING DIRECT READING INSTRUMENTION and PERSONAL PROTECTIVE EQUIPMENT CONSIDERATIONS  

International Nuclear Information System (INIS)

This document takes the newly released Industrial Hygiene Chemical Vapor Technical Basis (RPP--22491) and evaluates the chemicals of potential concern (COPC) identified for selected implementation actions by the industrial hygiene organization. This document is not intended as a hazard analysis with recommended controls for all tank farm activities. Not all of the chemicals listed are present in all tanks; therefore, hazard analyses can and should be tailored as appropriate. Detection of each chemical by current industrial hygiene non-specific instrumentation in use at the tank farms is evaluated. Information gaps are identified and recommendations are made to resolve these needs. Of the 52 COPC, 34 can be detected with existing instrumentation. Three additional chemicals could be detected with a photoionization detector (PID) equipped with a different lamp. Discussion with specific instrument manufacturers is warranted. Consideration should be given to having the SapphIRe XL customized for tank farm applications. Other instruments, sampling or modeling techniques should be evaluated to estimate concentrations of chemicals not detected by direct reading instruments. In addition, relative instrument response needs to be factored in to action levels used for direct reading instruments. These action levels should be correlated to exposures to the COPC and corresponding occupational exposure limits (OELs). The minimum respiratory protection for each of the COPC is evaluated against current options. Recommendations are made for respiratory protection based on each chemical. Until exposures are sufficiently quantified and analyzed, the current use of supplied air respiratory protection is appropriate and protective for the COPC. Use of supplied air respiratory protection should be evaluated once a detailed exposure assessment for the COPC is completed. The established tank farm OELs should be documented in the TFC-PLN-34. For chemicals without an established tank farm OEL, consideration should be given to adopting protective limits from NIOSH, AIHA, or developing OELs. Protective gloves and suits are evaluated for each chemical for which information is available. Information gaps are identified for some of the compounds and materials. Recommendations are made for resolving these needs. Based on available information, Silver Shield(regsign) gloves are promising for tank farm applications. However, permeation testing documentation is needed for the COPC and mixtures for Silver Shield(regsign) gloves to evaluate their protectiveness. North Safety Products is expected to provide the requested documentation. Multiple Tychem(regsign) products are available. There is overlap between chemicals and effective materials. Further hazard evaluation to determine actual hazards and permeation testing documentation is required to assess the efficacy of a single Tychem(regsign) product for tank farm applications. All of this chemical specific data is combined into a spreadsheet that will assist the industrial hygienist in the selection of monitoring instruments, respiratory protection selection and protective clothing for performing work at a specific tank(s)

19

Mobile field sampling system for determining submicron aerosol size distributions  

International Nuclear Information System (INIS)

The need to accurately measure size distributions of submicron aerosols in field situations was recognized. A mobile system was assembled consisting of three size distribution measuring instruments, a 1.1 ?m aerodynamic diameter cyclone precutter and a simple dilution method. The new system reduced data collection time, required only one operator (previous systems required two) and was successfully used in several field and laboratory applications

20

Improving gambling survey research using dual-frame sampling of landline and mobile phone numbers.  

Science.gov (United States)

Gambling prevalence studies are typically conducted within a single (landline) telephone sampling frame. This practice continues, despite emerging evidence that significant differences exist between landline and mobile (cell) phone only households. This study utilised a dual-frame (landline and mobile) telephone sampling methodology to cast light on the extent of differences across groups of respondents in respect to demographic, health, and gambling characteristics. A total of 2,014 participants from across Australian states and territories ranging in age from 18 to 96 years participated. Interviews were conducted using computer assisted telephone interviewing technology where 1,012 respondents from the landline sampling frame and 1,002 from the mobile phone sampling frame completed a questionnaire about gambling and other health behaviours. Responses across the landline sampling frame, the mobile phone sampling frame, and the subset of the mobile phone sampling frame that possessed a mobile phone only (MPO) were contrasted. The findings revealed that although respondents in the landline sample (62.7 %) did not significantly differ from respondents in the mobile phone sample (59.2 %) in gambling participation in the previous 12 months, they were significantly more likely to have gambled in the previous 12 months than the MPO sample (56.4 %). There were no significant differences in internet gambling participation over the previous 12 months in the landline sample (4.7 %), mobile phone sample (4.7 %) and the MPO sample (5.0 %). However, endorsement of lifetime problem gambling on the NODS-CLiP was significantly higher within the mobile sample (10.7 %) and the MPO sample (14.8 %) than the landline sample (6.6 %). Our research supports previous findings that reliance on a traditional landline telephone sampling approach effectively excludes distinct subgroups of the population from being represented in research findings. Consequently, we suggest that research best practice necessitates the use of a dual-frame sampling methodology. Despite inherent logistical and cost issues, this approach needs to become the norm in gambling survey research. PMID:23288431

Jackson, Alun C; Pennay, Darren; Dowling, Nicki A; Coles-Janess, Bernadette; Christensen, Darren R

2014-06-01

 
 
 
 
21

Camera Calibration for Direct-Reading Water-Meter Based on Round Feature  

Directory of Open Access Journals (Sweden)

Full Text Available Familiar methods of camera calibration are very hard to be applied to direct-reading water-meter because the camera on water-meter is limited by operating space and fixing condition. In this study, a new calibration method was proposed by utilizing plenty of round features on water-meter surface. Firstly, the center of round feature was roughly located by template matching. Secondly, the region around round feature was locked. Thirdly, the edge of round feature was extracted by Canny operator and the center of round feature was accurately located according to these edges. Lastly, calibration was carried out with these accurate centers and asymmetric error was corrected. Experimental results showed that the method proposed in this study was practical to calibration for camera fixed on direct-reading water-meter.

Liu Hong-Jiang

2012-01-01

22

The simulation of pulsed heater for a sampling system for the ion mobility spectrometer  

International Nuclear Information System (INIS)

The development of the sampling device with pulsed heating of the intermediate carrier for ion mobility spectrometer is described in this article. Numerical simulation of a pulse heater structure of is presented. The design of the sampling device using a pulsed heating of the intermediate carrier is developed. Experimental results of approval of the sampling device are presented.

23

Apparatus for the Calibration/Certification of Direct Reading Tritium in Air Monitors  

International Nuclear Information System (INIS)

Direct reading tritium-in-air-monitors are widely used for immediate observation of discharges or working area levels where significant sources of tritium are held. These monitors require initial and periodic calibration certification at the levels likely to be encountered. We describe a purpose built gas handling apparatus which enables various activity levels of tritiated gas (3H + N2) to be precisely metered and circulated in a closed loop through the monitor under calibration at a wide range of activity levels

24

Adaptive Sampling for Learning Gaussian Processes Using Mobile Sensor Networks  

Directory of Open Access Journals (Sweden)

Full Text Available This paper presents a novel class of self-organizing sensing agents that adaptively learn an anisotropic, spatio-temporal Gaussian process using noisy measurements and move in order to improve the quality of the estimated covariance function. This approach is based on a class of anisotropic covariance functions of Gaussian processes introduced to model a broad range of spatio-temporal physical phenomena. The covariance function is assumed to be unknown a priori. Hence, it is estimated by the maximum a posteriori probability (MAP estimator. The prediction of the field of interest is then obtained based on the MAP estimate of the covariance function. An optimal sampling strategy is proposed to minimize the information-theoretic cost function of the Fisher Information Matrix. Simulation results demonstrate the effectiveness and the adaptability of the proposed scheme.

Yunfei Xu

2011-03-01

25

Signal detection, data acquisition system and temperature controller for a 7 channel direct reading spectrometer  

International Nuclear Information System (INIS)

A signal detection and data acquisition system has been developed for a seven channel direct reading spectrometer indigenously. Signal detection is done by PMTs powered by a high voltage power supply. Data acquisition is done by integrating the detector output of the 7 channels and digitisation has been done using a single 12 bit ADC with the help of channel selection circuit. The system employs the dynamic range enhancement mechanism with the help of ADC and overflow detection circuits giving a dynamic range of 1:106. A menu driven software has been developed in Turbo Pascal to control data acquisition and perform data processing. (author)

26

Radiation protection instrumentation. Neutron radiation. Direct reading personal dose equivalent and/or dose equivalent rate monitors  

International Nuclear Information System (INIS)

The standard lays down requirements for the design and operating parameters of personal electronic direct-reading monitors used for the determination of the personal dose equivalent from neutron radiation. (P.A.)

27

Analysis of antibiotics from liquid sample using electrospray ionization-ion mobility spectrometry  

International Nuclear Information System (INIS)

Highlights: ? The reduced mobilities of 18 antibiotics are determined. ? Establishing antibiotic mass-mobility correlation using (12,4) potential model. ? Multi-component characteristics of antibiotics can be revealed using ESI-IMS. ? Most mixtures of antibiotics can be analyzed using ESI-IMS. ? The detection limit of amoxicillin is 70 pg. - Abstract: The recent findings of antibiotic residues in aquatic environment at trace level have gained much concern for the detrimental effect on ecological and human health due to bacterial resistance. Here, the feasibility of using electrospray ionization ion mobility spectrometry (ESI-IMS) for analysis antibiotics in liquid sample is demonstrated. Reduced mobilities and collision cross sections of 18 antibiotics are experimentally measured and compared with theoretical values according to mass-mobility correlation. Gentamicin is used as an example to investigate the capability of ESI-IMS for multi-component analysis of antibiotics. Mixtures of antibiotics at different concentrations are analyzed. The estimated detection limit for amoxicillin is 0.7 mg L?1 (70 pg) and the linear range of response maintains over two orders. This method will be a potential technique for the analysis of antibiotics in aquatic environment.

28

Resolution of Ion Mobility Spectra for the Detection of Hazardous Substances in Real Sampling Conditions  

International Nuclear Information System (INIS)

This work presents the possibilities offered by a blind source separation method such Multivariate Curve Resolution- Alternating Least Squares (MCR-ALS) in the analysis of Ion Mobility Spectra (IMS). Two security applications are analyzed in this context: the detection of TNT both in synthetic and real samples. Results obtained show the possibilities offered by the direct analysis of the drift time spectra when an appropriate resolution method is used.

29

Benthic foraminiferal census data from Mobile Bay, Alabama--counts of surface samples and box cores  

Science.gov (United States)

A study was undertaken in order to understand recent environmental change in Mobile Bay, Alabama. For this study a series of surface sediment and box core samples was collected. The surface benthic foraminiferal data provide the modern baseline conditions of the bay and can be used as a reference for changing paleoenvironmental parameters recorded in the box cores. The 14 sampling locations were chosen in the bay to cover the wide diversity of fluvial and marine-influenced environments on both sides of the shipping channel.

Richwine, Kathryn A.; Osterman, Lisa E.

2012-01-01

30

Evaluation of discrepancies between thermoluminescent dosimeter and direct-reading dosimeter results  

International Nuclear Information System (INIS)

Currently at Oak Ridge National Laboratory (ORNL), the responses of thermoluminescent dosimeters (TLDs) and direct-reading dosimeters (DRDs) are not officially compared or the discrepancies investigated. However, both may soon be required due to the new US Department of Energy (DOE) Radiological Control Manual. In the past, unofficial comparisons of the two dosimeters have led to discrepancies of up to 200%. This work was conducted to determine the reasons behind such discrepancies. For tests conducted with the TLDs, the reported dose was most often lower than the delivered dose, while DRDs most often responded higher than the delivered dose. Trends were identified in personnel DRD readings, and ft was concluded that more training and more control of the DRDs could improve their response. TLD responses have already begun to be improved; a new background subtraction method was implemented in April 1993, and a new dose algorithm is being considered. It was concluded that the DOE Radiological Control Manual requirements are reasonable for identifying discrepancies between dosimeter types, and more stringent administrative limits might even be considered

31

Calibration of direct reading photometers for the determination of neonatal bilirubin.  

Science.gov (United States)

Blijenberg et al. (J. Clin. Chem. Clin. Biochem. 25, 737-741 (1987) (1)) proposed that the assigned values of calibrators for the determination of bilirubin with simple direct reading photometers (bilirubinometers or "bilimeters") should be determined on the same type of instrument. For this purpose, the instrument is calibrated with neonatal serum, whose bilirubin concentration is determined with a reference method unbiased by matrix effects. In the present study, this procedure was developed and tested. Bilirubin was determined in capillary plasma (n = 30) and venous serum (n = 31) of newborns. Measurements were made by direct spectrophotometry in 4 bilimeters, and by a micromodification of Vink's spectrophotometric method after dilution with caffeine reagent (Vink et al. Clin. Chem. 34, 67-70 (1988) (2)). When the bilimeters were calibrated with a commercial control serum, using the concentrations quoted by the manufacturer, the results were higher by 13% (plasma) and 19% (serum) than those obtained by Vink's method. These discrepancies practically disappeared when the bilimeter results were recalculated using a calibrator concentration determined according to Blijenberg. Application of the proposed method to other control sera gave assigned values up to 23% lower than those stated by the manufacturers. After calibration of the bilimeters with various neonatal sera (specimens drawn for therapeutic purposes and residues, obtained from the clinical laboratory), differences of about 10% were observed between the assigned values. It is therefore essential to use several sera. Minor differences were found between bilimeters.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:2329317

Brügmann, G

1990-02-01

32

A direct reading on-line flowrate meter for use in radiochemical plant  

International Nuclear Information System (INIS)

A device for measurement and remote direct reading display of the flowrates of streams in a radiochemical plant is described. The device is interposed in the measured stream and consists of a syphon pot with a specially developed attachment on the discharge line. Differential pressure switches are used to trigger a timer device at set levels in the pot and the time required for filling the pot during each cycle is measured and is used to compute and display the flowrate. The device is accurate and reliable and is simple to fabricate and install. It is maintenance-free since it has no moving parts. It is also suggested that a manometer with conductive contacts could be used in place of the d.p. switches. The background and various stages of development of the device are described. The operating data is tabulated and parameters required for plant applications are indicated in detail. A simple method to detect and correct for errors due to drift in d.p. switch setting is also outlined. Sketches of typical syphon pot, the schematic of the apparatus and suggested layout for application in radiochemical plant are also included. (author). 11 figures, 6 tables

33

Field sampling of soil pore water to evaluate trace element mobility and associated environmental risk  

International Nuclear Information System (INIS)

Monitoring soil pollution is a key aspect in sustainable management of contaminated land but there is often debate over what should be monitored to assess ecological risk. Soil pore water, containing the most labile pollutant fraction in soils, can be easily collected in situ offering a routine way to monitor this risk. We present a compilation of data on concentration of trace elements (As, Cd, Cu, Pb, and Zn) in soil pore water collected in field conditions from a range of polluted and non-polluted soils in Spain and the UK during single and repeated monitoring, and propose a simple eco-toxicity test using this media. Sufficient pore water could be extracted for analysis both under semi-arid and temperate conditions, and eco-toxicity comparisons could be effectively made between polluted and non-polluted soils. We propose that in-situ pore water extraction could enhance the realism of risk assessment at some contaminated sites. - Highlights: ? In situ pore water sampling successfully evaluates trace elements mobility in soils. ? Field sampling proved robust for different soils, sites and climatic regimes. ? Measurements may be directly related to ecotoxicological assays. ? Both short and long-term monitoring of polluted lands may be achieved. ? This method complements other widely used assays for environmental risk assessment. - In situ pore water sampling from a wide variety of soils proves to be a beneficial application to monitor the stability of pollut monitor the stability of pollutants in soils and subsequent risk through mobility.

34

Wearable real-time direct reading naphthalene and VOC personal exposure monitor  

Science.gov (United States)

Naphthalene has been identified by the National Research Council as a serious health hazard for personnel working with jet fuels and oil-based sealants containing naphthalene. We are developing a family of miniature, self-contained, direct reading personal exposure monitors (PEMs) to detect, differentiate, quantify, and log naphthalene and other volatile organic compounds (VOCs) in the breathing zone of the wearer or in the hands of an industrial hygienist with limits of detection in the low parts per billion (ppb) range. The VOC Dosimeter (VOCDos) described here is a PEM that provides real-time detection and data logging of exposure as well as accumulated dose, with alarms addressing long term and immediate exposure limits. We will describe the sensor, which employs optical methods with a unique excitation source and rapidly refreshable vapor concentrator. This paper addresses the rapidly increasing awareness of the health risks of inhaling jet fuel vapors by Department of Defense (DOD) personnel engaged in or around jet fueling operations. Naphthalene is a one to three percent component of the 5 billion gallons of jet fuels used annually by DOD. Naphthalene is also a component of many other petroleum products such as asphalt and other oil-based sealants. The DOD is the single largest user of petroleum fuels in the United States (20% of all petroleum fuel used). The VOCDos wearable sensor provides real-time detection and data logging of exposure as well as accumulated dose. We will describe the sensor, which employs endogenous fluorescence from VOCs accumulated on a unique, rapidly refreshable, patent-pending concentrator, excited by a unique deep ultraviolet excitation source.

Hug, W. F.; Bhartia, R.; Reid, R. D.; Reid, M. R.; Oswal, P.; Lane, A. L.; Sijapati, K.; Sullivan, K.; Hulla, J. E.; Snawder, J.; Proctor, S. P.

2012-06-01

35

Um termômetro eletrônico de leitura direta com termistor / A direct reading electronic thermometer with thermistor  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese Neste trabalho, descrevemos o projeto e funcionamento de um sistema eletrônico simples de leitura direta de temperatura que utiliza um termistor como elemento sensor. O sistema é composto de uma fonte de alimentação estabilizada, um circuito série contendo um resistor e um termistor, e um circuito d [...] e condicionamento de sinal contendo um único circuito integrado, e pode ser operado com uma bateria. O sistema possui exatidão da ordem de 0,1 ºC para a faixa de temperatura de 0 ºC a 32 ºC, sendo indicado para experimentos que envolvem medidas de pequenas variações de temperatura. O sistema também apresenta algumas características adicionais, como robustez, facilidade de construção, baixo custo, e resposta rápida a variações de temperatura. Abstract in english In this work, we describe the project and operation of a simple direct reading temperature electronic system which uses a thermistor as sensing element. The system is composed of a stabilized power supply, a resistor-thermistor series circuit, and a signal conditioning circuit based only on one inte [...] grated circuit, and it may be operated using a battery. The system provides accuracy of about 0.1 ºC for a range of temperature varying between 0 ºC to 32 ºC, being indicated for experiments which involve measurements of small temperature changes. The system also provides some additional features, such as robustness, ease to building, low cost, and rapid response to temperature changes.

Paulo H., Guadagnini; Vania E., Barlette.

36

Experimental measurements of charge carrier mobility: lifetime products for large sample of pixilated CZT detectors  

Science.gov (United States)

Cadmium-Zinc-Telluride (CZT) is thought to be a primary work horse for hard X-ray astronomy in future. Due to the relatively large band-gap, it offers near room temperature operation while maintaining much better energy resolution then scintillator detectors operating in similar energy range. Further, CZT detectors are available in the form of pixilated detectors with area up to few cm2 and hence it is possible to realize very large detector area by having an array of such pixilated CZT detectors. However, it is well known that the energy spectrum of mono-energetic X-ray measured by CZT detectors does not have a Gaussian shape but has significant low-energy tail. This is mainly due to relatively poor mobility and small life time of the charge carriers, particularly of holes, in the CZT crystals. Thus, in order to understand spectral response for a large array of CZT detectors consisting of multiple elements / pixels, it is essential to characterize the mobility-lifetime products of charge carriers for each individual elements / pixels. Here we present experimental measurements of charge carrier mobility-lifetime products for large sample of multi-pixel CZT detectors. The mobility-lifetime products are measured by simultaneously fitting a ‘CZT line’ model to pixel wise spectra of 122 keV X-rays from 57Co at three different bias voltages. These were carried out as a part of selection of CZT detector modules for the “High Energy X-ray spectrometer (HEX)” onboard Indian moon mission - Chandrayaan-1.

Vadawale, S. V.; Shanmugam, M.; Purohit, Shishir; Acharya, Y. B.; Sudhakar, Manju

2012-07-01

37

Study on mobility of Cr(VI) in soils and removal from wastewater and synthetic samples  

International Nuclear Information System (INIS)

The results of ascending and descending of 51Cr(VI) in soil plates with TLC (Thin-Layer Chromatography) analysis and 51Cr(VI) leaching in soil column were consistent with the Rf values of 51Cr(VI) in different soils decreased in order of soil type of 2,3,5,4 and 1. Only a few portion of 51Cr(VI), 3.84% in soil-2 could move downwards into leachate when leaching continuously. The contamination resulted from the mobility of Cr(VI) might be very limited after the wastewater containing Cr(VI) entered soil, Cr(VI) in wastewater and synthetic samples could be effectively removed by the tea residues, soils, and fly-ash-lime respectively. The efficiency of the removal decreased in order of tea residues, soil-1, soil-4 and fly-ash-lime

38

Mobile Learning Perceptions of the Prospective Teachers (Turkish Republic of Northern Cyprus Sampling)  

Science.gov (United States)

The aim of this research is to analyze mobile learning perceptions and mobile learning levels of the prospective teachers at a university in Turkish Republic of Northern Cyprus according to their departments and gender. The research consists of 355 prospective teachers studying at a private university. The "Mobile Learning Perception Scale" was…

Serin, Oguz

2012-01-01

39

Comparison of mobile and stationary spore-sampling techniques for estimating virulence frequencies in aerial barley powdery mildew populations  

DEFF Research Database (Denmark)

Gene frequencies in samples of aerial populations of barley powdery mildew (Erysiphe graminis f.sp. hordei), which were collected in adjacent barley areas and in successive periods of time, were compared using mobile and stationary sampling techniques. Stationary samples were collected from trap plants in three periods within 1 week at a distance of more than 1000 m from the nearest barley field. At four dates within the same 8-day period, other samples were collected by a mobile spore trap along four sampling routes of a total distance of 130 km around the stationary stand of exposure. The samples were characterized by virulence genotypes defined according to infection types on 12 near-isogenic barley lines, and frequencies of single virulence genes were subsequently calculated. The three samples collected at the stationary site differed significantly with respect to allele frequencies at three loci. The main wind direction was different in the three sampling periods, implying different powdery mildew sources. For the mobile exposure, the differences between routes were not significant for any locus. However, the routes differed most for the loci under direct selection by host resistances genes, indicating a different distribution of source varieties along routes. There was no difference between allele frequencies at different dates, indicating that the proportions of spores from different source varieties were similar at these dates. In conclusion, samples collected by the stationary technique will mainly reflect the source varieties present in the local area, whereas samples collected by the mobile spore trap will mainly reflect sources close to the sampling route. Therefore, sampling sites as well as sampling routes should be defined such that source varieties are representative for the overall varietal distribution in the survey region considered.

Østergård, Hanne

1995-01-01

40

Engineering Task Plan for Development and Fabrication and Deployment of a mobile, variable depth sampling At-Tank Analysis Systems  

International Nuclear Information System (INIS)

This engineering task plan identifies the resources, responsibilities, and schedules for the development and deployment of a mobile, variable depth sampling system and an at-tank analysis system. The mobile, variable depth sampling system concept was developed after a cost assessment indicated a high cost for multiple deployments of the nested, fixed-depth sampling system. The sampling will provide double-shell tank (DST) staging tank waste samples for assuring the readiness of the waste for shipment to the LAW/HLW plant for treatment and immobilization. The at-tank analysis system will provide ''real-time'' assessments of the samples' chemical and physical properties. These systems support the Hanford Phase 1B vitrification project

 
 
 
 
41

Integrated field lysimetry and porewater sampling for evaluation of chemical mobility in soils and established vegetation.  

Science.gov (United States)

Potentially toxic chemicals are routinely applied to land to meet growing demands on waste management and food production, but the fate of these chemicals is often not well understood. Here we demonstrate an integrated field lysimetry and porewater sampling method for evaluating the mobility of chemicals applied to soils and established vegetation. Lysimeters, open columns made of metal or plastic, are driven into bareground or vegetated soils. Porewater samplers, which are commercially available and use vacuum to collect percolating soil water, are installed at predetermined depths within the lysimeters. At prearranged times following chemical application to experimental plots, porewater is collected, and lysimeters, containing soil and vegetation, are exhumed. By analyzing chemical concentrations in the lysimeter soil, vegetation, and porewater, downward leaching rates, soil retention capacities, and plant uptake for the chemical of interest may be quantified. Because field lysimetry and porewater sampling are conducted under natural environmental conditions and with minimal soil disturbance, derived results project real-case scenarios and provide valuable information for chemical management. As chemicals are increasingly applied to land worldwide, the described techniques may be utilized to determine whether applied chemicals pose adverse effects to human health or the environment. PMID:25045915

Matteson, Audrey R; Mahoney, Denis J; Gannon, Travis W; Polizzotto, Matthew L

2014-01-01

42

Mobile phone use while driving in a sample of Spanish university workers.  

Science.gov (United States)

A number of epidemiological studies have reported drivers who use a mobile phone while driving have an elevated risk of being involved in a crash. This is particularly concerning as a survey of drivers in the Spanish region of Catalunya found that approximately 87% own mobile phones. The present study investigated the reported frequency of mobile phone use on Spanish roads (for talking and using SMS), the characteristics of the drivers who use mobile phones while driving and whether they altered their driving behaviour when using a mobile phone. The research found that more than 60% use a mobile phone while driving and that the phone is mostly used for making calls, rather than using SMS. In general, males and females use mobile phones about the same reported frequency, although males were more likely to use a mobile phone to talk on the highway. The pattern for age was the same for both male and female participants, with the younger drivers using SMS more frequently than older drivers. On urban roads almost half of the drivers reported changing their driving behaviour when using a mobile phone, while on the highway this figure was slightly over 41%. The reported frequency of using a mobile phone to talk on urban roads was significantly correlated with crash involvement. However, this affect disappeared once the contributions of the demographic and descriptive variables had been partialled out. PMID:17034749

Gras, M Eugenia; Cunill, Monica; Sullman, Mark J M; Planes, Montserrat; Aymerich, Maria; Font-Mayolas, Silvia

2007-03-01

43

Behaviour of metalloids and metals from highly polluted soil samples when mobilized by water – Evaluation of static versus dynamic leaching  

International Nuclear Information System (INIS)

The mobilization behaviour of metalloids and metals when leached by water from highly polluted soil/sediment samples was studied using static and dynamic approaches employing batch methodology and rotating coiled columns (RCC), respectively. Increasing the solution-to-solid ratios during batch leaching resulted in different enhanced mobilization rates, which are element-specific and matrix-specific. When dynamic leaching is employed with continuous replacement of the eluent, a higher portion is mobilized than when using batch elution with an identical solid-to-water ratio. Using RCC the time-resolved leaching of the elements was monitored to demonstrate the leaching patterns. For the majority of elements a significant decrease could be shown in the mobilized portion of the elements with ongoing leaching process. The data were discussed targeted at solid liquid partitioning coefficients of the metal(loid)s. The capabilities in application of Kd values was demonstrated for dynamic leaching which is relevant for environmental processes. - Highlights: ? We examine the mobilization of metal(loid)s by water under simulated conditions. ? Static versus dynamic leaching (RCC) with continuous supply of extractant was compared. ? RCC is favourable for detailed time-resolved investigations of the leaching behaviour. ? The influence of matrices on the leaching behaviour was investigated. ? The capabilities of the Kd values in environmentally relevanalues in environmentally relevant processes is shown. - Dynamic leaching with continuous supply of water has proved as tool for long-term and time-resolved mobility of metal(loid)s in contaminated soils.

44

Assessing potential nanoparticle release during nanocomposite shredding using direct-reading instruments.  

Science.gov (United States)

This study was conducted to determine if engineered nanoparticles are released into the air when nanocomposite parts are shredded for recycling. Test plaques made from polypropylene resin reinforced with either montmorillonite nanoclay or talc and from the same resin with no reinforcing material were shredded by a granulator inside a test apparatus. As the plaques were shredded, an ultrafine condensation particle counter; a diffusion charger; a photometer; an electrical mobility analyzer; and an optical particle counter measured number, lung-deposited surface area, and mass concentrations and size distributions by number in real-time. Overall, the particle levels produced were both stable and lower than found in some occupational environments. Although the lowest particle concentrations were observed when the talc-filled plaques were shredded, fewer nanoparticles were generated from the nanocomposite plaques than when the plain resin plaques were shredded. For example, the average particle number concentrations measured using the ultrafine condensation particle counter were 1300 particles/cm(3) for the talc-reinforced resin, 4280 particles/cm(3) for the nanoclay-reinforced resin, and 12,600 particles/cm(3) for the plain resin. Similarly, the average alveolar-deposited particle surface area concentrations measured using the diffusion charger were 4.0 ?m(2)/cm(3) for the talc-reinforced resin, 8.5 ?m(2)/cm(3) for the nanoclay-reinforced resin, and 26 ?m(2)/cm(3) for the plain resin. For all three materials, count median diameters were near 10 nm during tests, which is smaller than should be found from the reinforcing materials. These findings suggest that recycling of nanoclay-reinforced plastics does not have a strong potential to generate more airborne nanoparticles than recycling of conventional plastics. PMID:22168254

Raynor, Peter C; Cebula, Jessica Ingraham; Spangenberger, Jeffrey S; Olson, Bernard A; Dasch, Jean M; D'Arcy, James B

2012-01-01

45

Dealing with the size-of-source effect in the calibration of direct-reading radiation thermometer  

International Nuclear Information System (INIS)

The majority of general-purpose low-temperature handheld radiation thermometers are severely affected by the size-of-source effect (SSE). Calibration of these instruments is pointless unless the SSE is accounted for in the calibration process. Traditional SSE measurement techniques, however, are costly and time consuming, and because the instruments are direct-reading in temperature, traditional SSE results are not easily interpretable, particularly by the general user. This paper describes a simplified method for measuring the SSE, suitable for second-tier calibration laboratories and requiring no additional equipment, and proposes a means of reporting SSE results on a calibration certificate that should be easily understood by the non-specialist user

46

Dealing with the size-of-source effect in the calibration of direct-reading radiation thermometer  

Energy Technology Data Exchange (ETDEWEB)

The majority of general-purpose low-temperature handheld radiation thermometers are severely affected by the size-of-source effect (SSE). Calibration of these instruments is pointless unless the SSE is accounted for in the calibration process. Traditional SSE measurement techniques, however, are costly and time consuming, and because the instruments are direct-reading in temperature, traditional SSE results are not easily interpretable, particularly by the general user. This paper describes a simplified method for measuring the SSE, suitable for second-tier calibration laboratories and requiring no additional equipment, and proposes a means of reporting SSE results on a calibration certificate that should be easily understood by the non-specialist user.

Saunders, P. [Measurement Standards Laboratory of New Zealand, PO Box 31-310, Lower Hutt 5040 (New Zealand)

2013-09-11

47

Inkjet-Printed Bioassays for Direct Reading with a Multimode DVD/Blu-Ray Optical Drive.  

Science.gov (United States)

Compact disc-based bioassays have been developed as novel point-of-care (POC) tools for various applications in chemical analysis and biomedical diagnosis. For the fabrication of assay discs, the surface patterning and sample introduction have been restricted to manual delivery that is unfavorable for on-demand high throughput medical screening. Herein, we have adapted a conventional inkjet printer to prepare bioassays on regular DVD-Rs and accomplished quantitative analysis with a multimode DVD/Blu-Ray optical drive in conjunction with free disc diagnostic software. The feasibility and accuracy of this method have been demonstrated by the quantitative analysis of inkjet-printed biotin-streptavidin binding assays on DVD, which serves as a trial system for other complex, medically relevant sandwich-format or competitive immunoassays. PMID:25144468

Li, Xiaochun; Shi, Maolin; Cui, Caie; Yu, Hua-Zhong

2014-09-16

48

Quinolones control in milk and eggs samples by liquid chromatography using a surfactant-mediated mobile phase.  

Science.gov (United States)

Four quinolones (danofloxacin, difloxacin, flumequine and marbofloxacin) were determined in milk and egg samples by a simplified high-performance liquid chromatographic procedure using a micellar mobile phase. No extraction was needed to precipitate the proteins from the matrices since they were solubilised in micelles. The only pretreatment steps required were homogenisation, dilution and filtration before injecting the sample into the chromatographic system. An adequate resolution of the quinolones was achieved by a chemometrics approach where retention was modelled as a first step using the retention factors in only five mobile phases. Afterwards, an optimisation criterion was applied to consider the position and shape of the chromatographic peaks. Analytical separation involved a C18 reversed-phase column, a hybrid micellar mobile phase of 0.05 M sodium dodecyl sulphate, 10% (v/v) butanol and 0.5% (v/v) triethylamine buffered at pH 3 and fluorimetric detection. Quinolones were eluted in less than 15 min without the protein band or other endogenous compounds from the food matrices interfering. The calculated relevant validation parameters, e.g., decision limit (CC(?)), detection capability (CC(?)), repeatability, within-laboratory reproducibility, recoveries and robustness, were acceptable and complied with European Commission Decision 2002/657/EC. Finally, the proposed method was successfully employed in quantifying the four quinolones in spiked egg and milk samples. PMID:21085936

Rambla-Alegre, M; Collado-Sánchez, M A; Esteve-Romero, J; Carda-Broch, S

2011-05-01

49

Comparison of emission ratios from on-road sources using a mobile laboratory under various driving and operational sampling modes  

Directory of Open Access Journals (Sweden)

Full Text Available Mobile sources produce a significant fraction of the total anthropogenic emissions burden in large cities and have harmful effects on air quality at multiple spatial scales. Mobile emissions are intrinsically difficult to estimate due to the large number of parameters affecting the emissions variability within and across vehicles types. The MCMA-2003 Campaign in Mexico City has showed the utility of using a mobile laboratory to sample and characterize specific classes of motor vehicles to better quantify their emissions characteristics as a function of their driving cycles. The technique clearly identifies "high emitter" vehicles via individual exhaust plumes, and also provides fleet average emission rates. We have applied this technique to Mexicali during the Border Ozone Reduction and Air Quality Improvement Program for the Mexicali-Imperial Valley in 2005. In this paper we analyze the variability of measured emission ratios for emitted NOx, CO, specific VOCs, NH3, and some primary fine particle components and properties obtained during the Border Ozone Reduction and Air Quality Improvement Program for the Mexicali-Imperial Valley in 2005 by deploying a mobile laboratory in roadside stationary sampling, chase and fleet average operational sampling modes. The measurements reflect various driving modes characteristic of the urban fleets. The observed variability for all measured gases and particle emission ratios is greater for the chase and roadside stationary sampling than for fleet average measurements. The fleet average sampling mode captured the effects of traffic conditions on the measured on-road emission ratios, allowing the use of fuel-based emission ratios to assess the validity of traditional "bottom-up" emissions inventories. Using the measured on-road emission ratios, we estimate CO and NOx mobile emissions of 175±62 and 10.4±1.3 metric tons/day, respectively, for the gasoline vehicle fleet in Mexicali. Comparisons with similar on-road emissions data from Mexico City indicated that fleet average NO emission ratios were around 20% higher in Mexicali than in Mexico City whereas HCHO and NH3 emission ratios were higher by a factor of 2 in Mexico City than in Mexicali. Acetaldehyde emission ratios did not differ significantly whereas selected aromatics VOCs emissions were similar or smaller in Mexicali. On-road heavy-duty diesel truck (HDDT nitrogen oxides emissions were measured near Austin, Texas, as well as in both Mexican cities, with NOy emission ratios in Austin < Mexico City < Mexicali.

M. Zavala

2008-04-01

50

Comparison of emissions from on-road sources using a mobile laboratory under various driving and operational sampling modes  

Directory of Open Access Journals (Sweden)

Full Text Available Mobile sources produce a significant fraction of the total anthropogenic emissions burden in large cities and have harmful effects on air quality at multiple spatial scales. Mobile emissions are intrinsically difficult to estimate due to the large number of parameters affecting the emissions variability within and across vehicles types. The MCMA-2003 Campaign in Mexico City has showed the utility of using a mobile laboratory to sample and characterize specific classes of motor vehicles to better quantify their emissions characteristics as a function of their driving cycles. The technique clearly identifies "high emitter" vehicles via individual exhaust plumes, and also provides fleet average emission rates. We have applied this technique to Mexicali during the Border Ozone Reduction and Air Quality Improvement Program (BORAQIP for the Mexicali-Imperial Valley in 2005. We analyze the variability of measured emission ratios for emitted NOx, CO, specific VOCs, NH3, and some primary fine particle components and properties by deploying a mobile laboratory in roadside stationary sampling, chase and fleet average operational sampling modes. The measurements reflect various driving modes characteristic of the urban fleets. The observed variability for all measured gases and particle emission ratios is greater for the chase and roadside stationary sampling than for fleet average measurements. The fleet average sampling mode captured the effects of traffic conditions on the measured on-road emission ratios, allowing the use of fuel-based emission ratios to assess the validity of traditional "bottom-up" emissions inventories. Using the measured on-road emission ratios, we estimate CO and NOx mobile emissions of 175±62 and 10.4±1.3 metric tons/day, respectively, for the gasoline vehicle fleet in Mexicali. Comparisons with similar on-road emissions data from Mexico City indicated that fleet average NO emission ratios were around 20% higher in Mexicali than in Mexico City whereas HCHO and NH3 emission ratios were higher by a factor of 2 in Mexico City than in Mexicali. Acetaldehyde emission ratios did not differ significantly whereas selected aromatics VOCs emissions were similar or smaller in Mexicali. Nitrogen oxides emissions for on-road heavy-duty diesel truck (HDDT were measured near Austin, Texas, as well as in both Mexican cities, with NOy emission ratios in Austin < Mexico City < Mexicali.

M. Zavala

2009-01-01

51

Unambiguous characterization of analytical markers in complex, seized opiate samples using an enhanced ion mobility trace detector-mass spectrometer.  

Science.gov (United States)

Ion mobility spectroscopy (IMS)-based trace-compound detectors (TCDs) are powerful and widely implemented tools for the detection of illicit substances. They combine high sensitivity, reproducibility, rapid analysis time, and resistance to dirt with an acceptable false alarm rate. The analytical specificity of TCD-IMS instruments for a given analyte depends strongly on a detailed knowledge of the ion chemistry involved, as well as the ability to translate this knowledge into field-robust analytical methods. In this work, we introduce an enhanced hybrid TCD-IMS/mass spectrometer (TCD-IMS/MS) that combines the strengths of ion-mobility-based target compound detection with unambiguous identification by tandem MS. Building on earlier efforts along these lines (Kozole et al., Anal. Chem. 2011, 83, 8596-8603), the current instrument is capable of positive and negative-mode analyses with tightly controlled gating between the IMS and MS modules and direct measurement of ion mobility profiles. We demonstrate the unique capabilities of this instrument using four samples of opium seized by the Canada Border Services Agency (CBSA), consisting of a mixture of opioid alkaloids and other naturally occurring compounds typically found in these samples. Although many analytical methods have been developed for analyzing naturally occurring opiates, this is the first detailed ion mobility study on seized opium samples. This work demonstrates all available analytical modes for the new IMS-MS system including "single-gate", "dual-gate", MS/MS, and precursor ion scan methods. Using a combination of these modes, we unambiguously identify all signals in the IMS spectra, including previously uncharacterized minor peaks arising from compounds that are common in raw opium. PMID:25302672

Liuni, Peter; Romanov, Vladimir; Binette, Marie-Josée; Zaknoun, Hafid; Tam, Maggie; Pilon, Pierre; Hendrikse, Jan; Wilson, Derek J

2014-11-01

52

Experimental study of the response functions of direct-reading instruments measuring surface-area concentration of airborne nanostructured particles  

International Nuclear Information System (INIS)

An increasing number of experimental and theoretical studies focus on airborne nanoparticles (NP) in relation with many aspects of risk assessment to move forward our understanding of the hazards, the actual exposures in the workplace, and the limits of engineering controls and personal protective equipment with regard to NP. As a consequence, generating airborne NP with controlled properties constitutes an important challenge. In parallel, toxicological studies have been carried out, and most of them support the concept that surface-area could be a relevant metric for characterizing exposure to airborne NP. To provide NP surface-area concentration measurements, some direct-reading instruments have been designed, based on attachment rate of unipolar ions to NP by diffusion. However, very few information is available concerning the performances of these instruments and the parameters that could affect their responses. In this context, our work aims at characterizing the actual available instruments providing airborne NP surface-area concentration. The instruments (a- LQ1-DC, Matter Engineering; b-AeroTrakx2122 9000, TSI; c- NSAM, TSI model 3550;) are thought to be relevant for further workplace exposure characterization and monitoring. To achieve our work, an experimental facility (named CAIMAN) was specially designed, built and characterized.

53

Study of the macrozooplankton within the samples taken at the Mobile site from November 1977 through November 1978. A data report of the Lawrence Berkeley Laboratory  

Energy Technology Data Exchange (ETDEWEB)

This report brings together the results of a re-examination of zooplankton samples from the Mobile OTEC site (29/sup 0/N-88/sup 0/W) in the northern Gulf of Mexico for macrozooplankton larger than 15 mm.

Steen, J.; Gunter, G.

1981-11-01

54

A Gibbs Sampling Based MAP Detection Algorithm for OFDM Over Rapidly Varying Mobile Radio Channels  

CERN Document Server

In orthogonal frequency-division multiplexing (OFDM) systems operating over rapidly time-varying channels, the orthogonality between subcarriers is destroyed leading to inter-carrier interference (ICI) and resulting in an irreducible error floor. In this paper, a new and low-complexity maximum {\\em a posteriori} probability (MAP) detection algorithm is proposed for OFDM systems operating over rapidly time-varying multipath channels. The detection algorithm exploits the banded structure of the frequency-domain channel matrix whose bandwidth is a parameter to be adjusted according to the speed of the mobile terminal. Based on this assumption, the received signal vector is decomposed into reduced dimensional sub-observations in such a way that all components of the observation vector contributing to the symbol to be detected are included in the decomposed observation model. The data symbols are then detected by the MAP algorithm by means of a Markov chain Monte Carlo (MCMC) technique in an optimal and computatio...

Panayirci, Erdal; Poor, H Vincent

2009-01-01

55

The effect of sample holder material on ion mobility spectrometry reproducibility  

Science.gov (United States)

When a positive detection of a narcotic occurs during the search of a vessel, a decision has to be made whether further intensive search is warranted. This decision is based in part on the results of a second sample collected from the same area. Therefore, the reproducibility of both sampling and instrumental analysis is critical in terms of justifying an in depth search. As reported at the 2nd Annual IMS Conference in Quebec City, the U.S. Coast Guard has determined that when paper is utilized as the sample desorption medium for the Barringer IONSCAN, the analytical results using standard reference samples are reproducible. A study was conducted utilizing papers of varying pore sizes and comparing their performance as a desorption material relative to the standard Barringer 50 micron Teflon. Nominal pore sizes ranged from 30 microns down to 2 microns. Results indicate that there is some peak instability in the first two to three windows during the analysis. The severity of the instability was observed to increase as the pore size of the paper is decreased. However, the observed peak instability does not create a situation that results in a decreased reliability or reproducibility in the analytical result.

Jadamec, J. Richard; Su, Chih-Wu; Rigdon, Stephen; Norwood, Lavan

1995-01-01

56

Genotyping of human parvovirus B19 in clinical samples from Brazil and Paraguay using heteroduplex mobility assay, single-stranded conformation polymorphism and nucleotide sequencing  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English Abstract in english Heteroduplex mobility assay, single-stranded conformation polymorphism and nucleotide sequencing were utilised to genotype human parvovirus B19 samples from Brazil and Paraguay. Ninety-seven serum samples were collected from individuals presenting with abortion or erythema infectiosum, arthropathies [...] , severe anaemia and transient aplastic crisis; two additional skin samples were collected by biopsy. After the procedure, all clinical samples were classified as genotype 1.

Marcos César Lima de, Mendonça; Ana Maria de Amorim, Ferreira; Marta Gonçalves Matos dos, Santos; Elva Cristina, Oviedo; Maria Sônia Dal, Bello; Marilda Mendonça, Siqueira; Juan Manuel Piñeiro, Maceira; Maria Genoveva, von Hubinger; José Nelson dos Santos Silva, Couceiro.

57

Genotyping of human parvovirus B19 in clinical samples from Brazil and Paraguay using heteroduplex mobility assay, single-stranded conformation polymorphism and nucleotide sequencing  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English Abstract in english Heteroduplex mobility assay, single-stranded conformation polymorphism and nucleotide sequencing were utilised to genotype human parvovirus B19 samples from Brazil and Paraguay. Ninety-seven serum samples were collected from individuals presenting with abortion or erythema infectiosum, arthropathies [...] , severe anaemia and transient aplastic crisis; two additional skin samples were collected by biopsy. After the procedure, all clinical samples were classified as genotype 1.

Marcos César Lima de, Mendonça; Ana Maria de Amorim, Ferreira; Marta Gonçalves Matos dos, Santos; Elva Cristina, Oviedo; Maria Sônia Dal, Bello; Marilda Mendonça, Siqueira; Juan Manuel Piñeiro, Maceira; Maria Genoveva, von Hubinger; José Nelson dos Santos Silva, Couceiro.

2011-06-01

58

Sampling  

Science.gov (United States)

This tutorial covers some of the key terms in sampling like "population" and "sampling frame," some of the statistical terms used in sampling, and the major distinction between probability and Nonprobability sampling methods.

William Trochim (Cornell University)

2006-10-20

59

Final report, Ames Mobile Laboratory Project: The development and operation of instrumentation in a mobile laboratory for in situ, real-time screening and characterization of soils using the laser ablation sampling technique  

International Nuclear Information System (INIS)

The main focus of the Ames Laboratory's Technology Integration Program, TIP, from May 1991 through December 1994 was the development, fabrication, and demonstration of a mobile instrumentation laboratory incorporating rapid in situ sampling systems for safe, rapid, and cost effective soil screening/characterization. The Mobile Demonstration Laboratory for Environmental Screening Technologies, MDLEST, containing the analysis instrumentation, along with surface and subsurface sampling probe prototypes employing the laser ablation sampling technique were chosen to satisfy the particular surface and subsurface soil characterization needs of the various Department of Energy facilities for determining the extent of heavy metal and radionuclide contamination. The MDLEST, a 44 foot long 5th wheel trailer, is easily configured for the analysis instrumentation and sampling system required for the particular site work. This mobile laboratory contains all of the utilities needed to satisfy the operating requirements of the various instrumentation installed. These utilities include, an electric generator, a chilled water system, process gases, a heating/air conditioning system, and computer monitoring and automatic operating systems. Once the MDLEST arrives at the job site, the instrumentation is aligned and calibration is completed, sampling and analysis operations begin. The sample is acquired, analyzed and the results reported in as little as 10 minutes. The surface sampling probe is used in two modes to acquire samples for analysis. It is either set directly on the ground over the site to be sampled, in situ sampling, or in a special fixture used for calibrating the sampling analysis system with standard soil samples, having the samples brought to the MDLEST. The surface sampling probe was used to in situ sample a flat concrete surface (nondestructively) with the ablated sample being analyzed by the instrumentation in the MDLEST

60

Inclusion of mobile phone numbers into an ongoing population health survey in New South Wales, Australia: design, methods, call outcomes, costs and sample representativeness  

Science.gov (United States)

Background In Australia telephone surveys have been the method of choice for ongoing jurisdictional population health surveys. Although it was estimated in 2011 that nearly 20% of the Australian population were mobile-only phone users, the inclusion of mobile phone numbers into these existing landline population health surveys has not occurred. This paper describes the methods used for the inclusion of mobile phone numbers into an existing ongoing landline random digit dialling (RDD) health survey in an Australian state, the New South Wales Population Health Survey (NSWPHS). This paper also compares the call outcomes, costs and the representativeness of the resultant sample to that of the previous landline sample. Methods After examining several mobile phone pilot studies conducted in Australia and possible sample designs (screening dual-frame and overlapping dual-frame), mobile phone numbers were included into the NSWPHS using an overlapping dual-frame design. Data collection was consistent, where possible, with the previous years’ landline RDD phone surveys and between frames. Survey operational data for the frames were compared and combined. Demographic information from the interview data for mobile-only phone users, both, and total were compared to the landline frame using ?2 tests. Demographic information for each frame, landline and the mobile-only (equivalent to a screening dual frame design), and the frames combined (with appropriate overlap adjustment) were compared to the NSW demographic profile from the 2011 census using ?2 tests. Results In the first quarter of 2012, 3395 interviews were completed with 2171 respondents (63.9%) from the landline frame (17.6% landline only) and 1224 (36.1%) from the mobile frame (25.8% mobile only). Overall combined response, contact and cooperation rates were 33.1%, 65.1% and 72.2% respectively. As expected from previous research, the demographic profile of the mobile-only phone respondents differed most (more that were young, males, Aboriginal and Torres Strait Islanders, overseas born and single) compared to the landline frame responders. The profile of respondents from the two frames combined, with overlap adjustment, was most similar to the latest New South Wales (NSW) population profile. Conclusions The inclusion of the mobile phone numbers, through an overlapping dual-frame design, did not impact negatively on response rates or data collection, and although costing more the design was still cost-effective because of the additional interviews that were conducted with young people, Aboriginal and Torres Strait Islanders and people who were born overseas resulting in a more representative overall sample. PMID:23173849

2012-01-01

 
 
 
 
61

Inclusion of mobile phone numbers into an ongoing population health survey in New South Wales, Australia: design, methods, call outcomes, costs and sample representativeness  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Background In Australia telephone surveys have been the method of choice for ongoing jurisdictional population health surveys. Although it was estimated in 2011 that nearly 20% of the Australian population were mobile-only phone users, the inclusion of mobile phone numbers into these existing landline population health surveys has not occurred. This paper describes the methods used for the inclusion of mobile phone numbers into an existing ongoing landline random digit dialling (RDD health survey in an Australian state, the New South Wales Population Health Survey (NSWPHS. This paper also compares the call outcomes, costs and the representativeness of the resultant sample to that of the previous landline sample. Methods After examining several mobile phone pilot studies conducted in Australia and possible sample designs (screening dual-frame and overlapping dual-frame, mobile phone numbers were included into the NSWPHS using an overlapping dual-frame design. Data collection was consistent, where possible, with the previous years’ landline RDD phone surveys and between frames. Survey operational data for the frames were compared and combined. Demographic information from the interview data for mobile-only phone users, both, and total were compared to the landline frame using ?2 tests. Demographic information for each frame, landline and the mobile-only (equivalent to a screening dual frame design, and the frames combined (with appropriate overlap adjustment were compared to the NSW demographic profile from the 2011 census using ?2 tests. Results In the first quarter of 2012, 3395 interviews were completed with 2171 respondents (63.9% from the landline frame (17.6% landline only and 1224 (36.1% from the mobile frame (25.8% mobile only. Overall combined response, contact and cooperation rates were 33.1%, 65.1% and 72.2% respectively. As expected from previous research, the demographic profile of the mobile-only phone respondents differed most (more that were young, males, Aboriginal and Torres Strait Islanders, overseas born and single compared to the landline frame responders. The profile of respondents from the two frames combined, with overlap adjustment, was most similar to the latest New South Wales (NSW population profile. Conclusions The inclusion of the mobile phone numbers, through an overlapping dual-frame design, did not impact negatively on response rates or data collection, and although costing more the design was still cost-effective because of the additional interviews that were conducted with young people, Aboriginal and Torres Strait Islanders and people who were born overseas resulting in a more representative overall sample.

Barr Margo L

2012-11-01

62

Respondent-driven sampling on the Thailand-Cambodia border. I. Can malaria cases be contained in mobile migrant workers?  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Background Reliable information on mobility patterns of migrants is a crucial part of the strategy to contain the spread of artemisinin-resistant malaria parasites in South-East Asia, and may also be helpful to efforts to address other public health problems for migrants and members of host communities. In order to limit the spread of malarial drug resistance, the malaria prevention and control programme will need to devise strategies to reach cross-border and mobile migrant populations. Methodology The Respondent-driven sampling (RDS method was used to survey migrant workers from Cambodia and Myanmar, both registered and undocumented, in three Thai provinces on the Thailand-Cambodia border in close proximity to areas with documented artemisinin-resistant malaria parasites. 1,719 participants (828 Cambodian and 891 Myanmar migrants were recruited. Subpopulations of migrant workers were analysed using the Thailand Ministry of Health classification based on length of residence in Thailand of greater than six months (long-term, or M1 or less than six months (short-term, or M2. Key information collected on the structured questionnaire included patterns of mobility and migration, demographic characteristics, treatment-seeking behaviours, and knowledge, perceptions, and practices about malaria. Results Workers from Cambodia came from provinces across Cambodia, and 22% of Cambodian M1 and 72% of Cambodian M2 migrants had been in Cambodia in the last three months. Less than 6% returned with a frequency of greater than once per month. Of migrants from Cambodia, 32% of M1 and 68% of M2 were planning to return, and named provinces across Cambodia as their likely next destinations. Most workers from Myanmar came from Mon state (86%, had never returned to Myanmar (85%, and only 4% stated plans to return. Conclusion Information on migratory patterns of migrants from Myanmar and Cambodia along the malaria endemic Thailand-Cambodian border within the artemisinin resistance containment zone will help target health interventions, including treatment follow-up and surveillance.

Delacollette Charles

2011-05-01

63

Development of an electrospray-(63)Ni-differential ion mobility spectrometer for the analysis of aqueous samples.  

Science.gov (United States)

The feasibility of an electrospray coupled with a (63)Ni-differential ion mobility spectrometer (DMS) for the analysis of water samples was proven on examples of 2-hexanone, fluoroacetamide, l-nicotine and 1-phenyl-2-thiourea water solutions. The model substances were selected in order to cover the vapor pressure range of 0.3-1467 Pa. To reduce the inline humidity, which demonstrates a strong influence on the analyte compensation voltage, two units with a desolvation region lengths of 15.5 and 7 mm were examined. The counter gas (heated to 100 °C nitrogen) with flow rates of 100 mL min(-1) and 30 mL min(-1) for short and long desolvation units, respectively, was essential for the efficient reduction of humidity. The reduction of water content in the carrier gas to 2.2-2.4 g m(-3) and to 1.8-2.0 g m(-3) for the short and long desolvation unit, respectively, was achieved at an electrospray flow rate of 1000 nL min(-1). With this adjusted experimental setup, the detection of model substances in the water solutions, in the range of 0.1-50 mg L(-1), was performed. No correlation between the vapor pressure and signal area was observed. The high stability of the inline humidity, and the correspondingly stable carrier gas flow rate, were found to be essential for an acceptable reproducibility. PMID:24468357

Kuklya, Andriy; Uteschil, Florian; Kerpen, Klaus; Marks, Robert; Telgheder, Ursula

2014-03-01

64

Sampling  

CERN Document Server

Praise for the Second Edition "This book has never had a competitor. It is the only book that takes a broad approach to sampling . . . any good personal statistics library should include a copy of this book." —Technometrics "Well-written . . . an excellent book on an important subject. Highly recommended." —Choice "An ideal reference for scientific researchers and other professionals who use sampling." —Zentralblatt Math Features new developments in the field combined with all aspects of obtaining, interpreting, and using sample data Sampling provides an up-to-date treat

Thompson, Steven K

2012-01-01

65

Evaluation of false positive responses by mass spectrometry and ion mobility spectrometry for the detection of trace explosives in complex samples  

Energy Technology Data Exchange (ETDEWEB)

Graphical abstract: -- Highlights: •First study to use (?)SESI-IM-TOFMS to analyze complex mixtures of personal care products. •The study demonstrated, by identifying mobility and mass interferents with explosive signatures, which, if used separately, neither IMS nor MS alone would prevent every false positive for explosives when detected in the presence of a complex sample matrix. •Ingredients in common household cleaning products were shown to either enhance or suppress the ionization of explosives in a SESI-IM-TOFMS analysis. •Mobility separation provided real-time separation of ion species that indicated overlapping isotope peak patterns -- Abstract: Secondary electrospray ionization-ion mobility-time of flight mass spectrometry (SESI-IM-TOFMS) was used to evaluate common household products and food ingredients for any mass or mobility responses that produced false positives for explosives. These products contained ingredients which shared the same mass and mobility drift time ranges as the analyte ions for common explosives. The results of this study showed that the vast array of compounds in these products can cause either mass or mobility false positive responses. This work also found that two ingredients caused either enhanced or reduced ionization of the target analytes. Another result showed that an IMS can provide real-time separation of ion species that impede accurate mass identifications due to overlapping isotope peak patterns. The final result of this study showed that, when mass and mobility values were used to identify an ion, no false responses were found for the target explosives. The wider implication of these results is that the possibility exists for even greater occurrences of false responses from complex mixtures found in common products. Neither IMS nor MS alone can provide 100% assurance from false responses. IMS, due to its low cost, ease of operation, rugged reliability, high sensitivity and tunable selectivity, will remain the field method of choice for the near future but, when combined with MS, can also reduce the false positive rate for explosive analyses.

Crawford, C.L., E-mail: clcrawf@sandia.gov; Hill, H.H.

2013-09-17

66

Evaluation of false positive responses by mass spectrometry and ion mobility spectrometry for the detection of trace explosives in complex samples  

International Nuclear Information System (INIS)

Graphical abstract: -- Highlights: •First study to use (?)SESI-IM-TOFMS to analyze complex mixtures of personal care products. •The study demonstrated, by identifying mobility and mass interferents with explosive signatures, which, if used separately, neither IMS nor MS alone would prevent every false positive for explosives when detected in the presence of a complex sample matrix. •Ingredients in common household cleaning products were shown to either enhance or suppress the ionization of explosives in a SESI-IM-TOFMS analysis. •Mobility separation provided real-time separation of ion species that indicated overlapping isotope peak patterns -- Abstract: Secondary electrospray ionization-ion mobility-time of flight mass spectrometry (SESI-IM-TOFMS) was used to evaluate common household products and food ingredients for any mass or mobility responses that produced false positives for explosives. These products contained ingredients which shared the same mass and mobility drift time ranges as the analyte ions for common explosives. The results of this study showed that the vast array of compounds in these products can cause either mass or mobility false positive responses. This work also found that two ingredients caused either enhanced or reduced ionization of the target analytes. Another result showed that an IMS can provide real-time separation of ion species that impede accurate mass identifications due to overlapping isotope peak patterns. The final result of this study showed that, when mass and mobility values were used to identify an ion, no false responses were found for the target explosives. The wider implication of these results is that the possibility exists for even greater occurrences of false responses from complex mixtures found in common products. Neither IMS nor MS alone can provide 100% assurance from false responses. IMS, due to its low cost, ease of operation, rugged reliability, high sensitivity and tunable selectivity, will remain the field method of choice for the near future but, when combined with MS, can also reduce the false positive rate for explosive analyses

67

Mobility of arsenic, cadmium and zinc in a multi-element contaminated soil profile assessed by in-situ soil pore water sampling, column leaching and sequential extraction  

International Nuclear Information System (INIS)

Three methods for predicting element mobility in soils have been applied to an iron-rich soil, contaminated with arsenic, cadmium and zinc. Soils were collected from 0 to 30 cm, 30 to 70 cm and 70 to 100 cm depths in the field and soil pore water was collected at different depths from an adjacent 100 cm deep trench. Sequential extraction and a column leaching test in the laboratory were compared to element concentrations in pore water sampled directly from the field. Arsenic showed low extractability, low leachability and occurred at low concentrations in pore water samples. Cadmium and zinc were more labile and present in higher concentrations in pore water, increasing with soil depth. Pore water sampling gave the best indication of short term element mobility when field conditions were taken into account, but further extraction and leaching procedures produced a fuller picture of element dynamics, revealing highly labile Cd deep in the soil profile. - Mobility of arsenic, cadmium and zinc in a polluted soil can be realistically interpreted by in-situ soil pore water sampling.

68

Mobility of arsenic, cadmium and zinc in a multi-element contaminated soil profile assessed by in-situ soil pore water sampling, column leaching and sequential extraction  

Energy Technology Data Exchange (ETDEWEB)

Three methods for predicting element mobility in soils have been applied to an iron-rich soil, contaminated with arsenic, cadmium and zinc. Soils were collected from 0 to 30 cm, 30 to 70 cm and 70 to 100 cm depths in the field and soil pore water was collected at different depths from an adjacent 100 cm deep trench. Sequential extraction and a column leaching test in the laboratory were compared to element concentrations in pore water sampled directly from the field. Arsenic showed low extractability, low leachability and occurred at low concentrations in pore water samples. Cadmium and zinc were more labile and present in higher concentrations in pore water, increasing with soil depth. Pore water sampling gave the best indication of short term element mobility when field conditions were taken into account, but further extraction and leaching procedures produced a fuller picture of element dynamics, revealing highly labile Cd deep in the soil profile. - Mobility of arsenic, cadmium and zinc in a polluted soil can be realistically interpreted by in-situ soil pore water sampling.

Beesley, Luke, E-mail: l.beesley@2007.ljmu.ac.u [Faculty of Science, Liverpool John Moores University, Liverpool L3 3AF (United Kingdom); Moreno-Jimenez, Eduardo [Departamento de Quimica Agricola, Universidad Autonoma de Madrid, 28049 Madrid (Spain); Clemente, Rafael [Dep. of Soil and Water Conservation and Organic Waste Management, CEBAS-CSIC, Campus Universitario de Espinardo, PO Box 164, 30100 Espinardo, Murcia (Spain); Lepp, Nicholas; Dickinson, Nicholas [Faculty of Science, Liverpool John Moores University, Liverpool L3 3AF (United Kingdom)

2010-01-15

69

Determination of 2,4,6-tricholoroanisole in water and wine samples by ionic liquid-based single-drop microextraction and ion mobility spectrometry.  

Science.gov (United States)

This article presents for the first time the joint use of ionic liquid-based single drop microextraction (IL-SDME) and ion mobility spectrometry (IMS) for the determination of 2,4,6-trichloroanisol (2,4,6-TCA) in water and wine samples. An imidazolium-based IL was used as extractant taking into account both, its affinity for the analyte and its negligible response in the detector. Water samples were directly analyzed by IL-SDME while wines required a previous solid phase extraction step to remove the interference of ethanol in the ion mobility spectra. All the parameters affecting the extraction were optimized in order to achieve the highest sensitivity, taking into account the lower concentrations reported for this compound in the matrices selected. Moreover, the use of ion mobility working under the negative ionization mode confers an adequate selectivity. The limits of detection and quantification were 0.2 and 0.66 ng L(-1), respectively. The precision of the method calculated at 10 ng L(-1) was 1.4% (repeatability, n=5) and 2.2% (reproducibility, n=5, 3 days). The analysis of water and wine samples reported the presence of 2,4,6-TCA in wine samples commercialized in bottles with cork stoppers. PMID:21839198

Márquez-Sillero, Isabel; Aguilera-Herrador, Eva; Cárdenas, Soledad; Valcárcel, Miguel

2011-09-30

70

Direct-reading spectrochemical analysis of magnesium alloys; Analisis espectroquimico de lectura directa de aleaciones de magnesio  

Energy Technology Data Exchange (ETDEWEB)

A Quantometer has been applied to the determination of aluminum, berylium, calcium, iron, silicon and zinc in magnesium alloys Magnox, after the conversion of the samples to the oxide. For the aluminum, whose concentration is relatively high, the conducting briquets technique with an interrupted discharge is employed, using the magnesium as the internal standard. For the other elements a total burning method with direct current arc is employed, using also the magnesium as the internal standard. (Author) 7 refs.

Roca Adell, M.

1964-07-01

71

Portable solid phase micro-extraction coupled with ion mobility spectrometry system for on-site analysis of chemical warfare agents and simulants in water samples.  

Science.gov (United States)

On-site analysis is an efficient approach to facilitate analysis at the location of the system under investigation as it can result in more accurate, more precise and quickly available analytical data. In our work, a novel self-made thermal desorption based interface was fabricated to couple solid-phase microextraction with ion mobility spectrometry for on-site water analysis. The portable interface can be connected with the front-end of an ion mobility spectrometer directly without other modifications. The analytical performance was evaluated via the extraction of chemical warfare agents and simulants in water samples. Several parameters including ionic strength and extraction time have been investigated in detail. The application of the developed method afforded satisfactory recoveries ranging from 72.9% to 114.4% when applied to the analysis of real water samples. PMID:25384006

Yang, Liu; Han, Qiang; Cao, Shuya; Yang, Jie; Yang, Junchao; Ding, Mingyu

2014-01-01

72

Portable Solid Phase Micro-Extraction Coupled with Ion Mobility Spectrometry System for On-Site Analysis of Chemical Warfare Agents and Simulants in Water Samples  

Directory of Open Access Journals (Sweden)

Full Text Available On-site analysis is an efficient approach to facilitate analysis at the location of the system under investigation as it can result in more accurate, more precise and quickly available analytical data. In our work, a novel self-made thermal desorption based interface was fabricated to couple solid-phase microextraction with ion mobility spectrometry for on-site water analysis. The portable interface can be connected with the front-end of an ion mobility spectrometer directly without other modifications. The analytical performance was evaluated via the extraction of chemical warfare agents and simulants in water samples. Several parameters including ionic strength and extraction time have been investigated in detail. The application of the developed method afforded satisfactory recoveries ranging from 72.9% to 114.4% when applied to the analysis of real water samples.

Liu Yang

2014-11-01

73

Headspace-multicapillary column-ion mobility spectrometry for the direct analysis of 2,4,6-trichloroanisole in wine and cork samples.  

Science.gov (United States)

Headspace-multicapillary column-ion mobility spectrometry coupling has been evaluated for the direct analysis of wine and cork stopper samples for the determination of 2,4,6-trichloroanisole (2,4,6-TCA). The instrumental configuration permits the sample to be introduced in headspace vials which are placed into the autosampler oven in order to facilitate the transference of the volatile compounds from the sample to its headspace. Further, an aliquot of 200 ?L of the homogenized gaseous phase is injected into the multicapillary column in order to separate the target compounds from potential interferents. The detection of 2,4,6-TCA was carried out in an ion mobility spectrometer with a radioactive source and working under negative mode. All the system was computer controlled, including data acquisition and treatment. The limits of detection achieved were 0.012 ng L(-1) for wine and 0.28 ng g(-1) for the cork stopper. The procedure was applied to the analysis of commercial wine samples in different packages and 2,4,6-TCA was found in all of those closed with a cork stopper. The excellent recovery values obtained testify for the goodness of the method as no interference from the sample matrix exits. PMID:23089513

Márquez-Sillero, Isabel; Cárdenas, Soledad; Valcárcel, Miguel

2012-11-23

74

Assessment of the mobility of metals and semi-metals in Sepetiba Bay (Rio de Janeiro - Brazil) by analyzing sediments sampled in different periods  

International Nuclear Information System (INIS)

In the last three decades, Sepetiba bay, located about 60 km south of the city of Rio de Janeiro, Brazil, has been subjected to increasing pollution impacts. The Sepetiba region has undergone fast industrial expansion leading to high levels of pollution by metals. For the last two decades, an industrial park composed of about 400 industrial plants, basically metallurgical, was established in the Sepetiba Bay basin, releasing its effluents either straight into the bay or through local rivers. Potential toxic elements such as As, Zn, Cr, Pb and Cd have been introduced into the bay through industrial and domestic wastes. In the present paper, instrumental neutron activation analysis (INAA) was applied to determine the elements As, Cr and Zn in sediments from Sepetiba bay, sampled in August 2003, in order to compare to previous results obtained in 1998, for these elements, by Pellegatti et al. (2001). By using a geostatistical model it was possible to evaluate the spatial mobility of As, Cr and Zn in the last six years. The results obtained showed that none of the studied elements showed a significant spatial mobility. This behavior is probably related to geochemical barriers present in Sepetiba bay. (author)

75

Mobile membrane introduction tandem mass spectrometry for on-the-fly measurements and adaptive sampling of VOCs around oil and gas projects in Alberta, Canada  

Science.gov (United States)

The release of hydrocarbons into the environment can have significant environmental and economic consequences. The evolution of smaller, more portable mass spectrometers to the field can provide spatially and temporally resolved information for rapid detection, adaptive sampling and decision support. We have deployed a mobile platform membrane introduction mass spectrometer (MIMS) for the in-field simultaneous measurement of volatile and semi-volatile organic compounds. In this work, we report instrument and data handling advances that produce geographically referenced data in real-time and preliminary data where these improvements have been combined with high precision ultra-trace VOCs analysis to adaptively sample air plumes near oil and gas operations in Alberta, Canada. We have modified a commercially available ion-trap mass spectrometer (Griffin ICX 400) with an in-house temperature controlled capillary hollow fibre polydimethylsiloxane (PDMS) polymer membrane interface and in-line permeation tube flow cell for a continuously infused internal standard. The system is powered by 24 VDC for remote operations in a moving vehicle. Software modifications include the ability to run continuous, interlaced tandem mass spectrometry (MS/MS) experiments for multiple contaminants/internal standards. All data are time and location stamped with on-board GPS and meteorological data to facilitate spatial and temporal data mapping. Tandem MS/MS scans were employed to simultaneously monitor ten volatile and semi-volatile analytes, including benzene, toluene, ethylbenzene and xylene (BTEX), reduced sulfur compounds, halogenated organics and naphthalene. Quantification was achieved by calibrating against a continuously infused deuterated internal standard (toluene-d8). Time referenced MS/MS data were correlated with positional data and processed using Labview and Matlab to produce calibrated, geographical Google Earth data-visualizations that enable adaptive sampling protocols. This real-time approach has been employed in a moving vehicle to identify and track downwind plumes of fugitive VOC emissions near hydrocarbon upgrading and chemical processing facilities in Fort Saskatchewan, Alberta. This information was relayed to a trailing vehicle, which collected stationary grab samples in evacuated canisters for ultra trace analysis of over seventy VOC analytes. In addition, stationary time series data were collected and compared with grab samples co-located with our sampling line. Spatially and temporally resolved, time referenced MS/MS data for several air contaminants associated with oil and gas processing were processed in real time to produce geospatial data for visualization in Google Earth. This information was used to strategically locate grab samples for high precision, ultra trace analysis.

Krogh, E.; Gill, C.; Bell, R.; Davey, N.; Martinsen, M.; Thompson, A.; Simpson, I. J.; Blake, D. R.

2012-12-01

76

Characterization and quantification by mass spectrometry of mobile organic matter from clay rock: influence of the origin and of the sampling  

International Nuclear Information System (INIS)

chemical composition of NOM contained in the pore water from the argillite clay rock has been determined in in-situ like conditions by ESI-MS and APCI-MS, which are suitable techniques to identify the chemical composition of NOM contained in the COx pore water available from boreholes. Mostly low molecular weight molecules were identified, of whom structural features observed were mainly acidic compounds, fatty acids as well as aldehydes and amino acids. Fulvic and Humic Acids have such low concentrations in the COx formation, leading to a probable low velocity, that the inventory was focused on the small organic molecules. The influence of the sampling was studied, notably by performing an experiment in which the argillite core sample was squeezed for 28 days at 175 MPa. The initial water content of the sample was 5.3% and the concentration of organic matter XX mol C/L. The structural features observed for the DOM were different from the percolated water samples either obtained in situ from the POX 1601 borehole or in lab from EST 34399 cores than for the squeezed water sample. The influence of the water collection will be discussed. Additionally, a part of organic matter can be extracted and isolated by HCl/HF treatment. This corresponds to the kerogen fraction which is insoluble in the pore water. 150 Myears solid-bound organic matter of the COx has been already investigated in several studies and originates from a mixture of marine and terrestrial sources. In addition to this, the CCl4 soluble organic fraction (bitumen) has been already characterized by liquid and gas chromatography coupled to mass spectrometry. And finally, a small fraction of the kerogen can be mobilized under alkaline conditions from the COx, a scenario which could happen at the COx/cement interface. This fraction (approx. 0,002 mol C/L) could be transported in the pore water and has been characterized to contain small molecules with carboxylic and phenolic groups. Nonetheless, in order to predict the speciation of metals and radionuclides for a given scenario, Dissolved Organic Matter (DOM) either in the pore water or that could be mobilized from the kerogen fraction must be supported by quantitative data. Thus, the present study is focused the quantification of these low molecular weight compounds using mass spectrometry. Several simple, sensitive, and reproducible methods of quantification, such as internal calibration, calibrated addition of external standard or sequential tandem mass spectrometry, have been developed and are discussed in this paper, mainly focused on acidic compounds, which are the mo st probable compounds that could influence the migration of heavy metals and radionuclides. Linearity range, detection limit and quantification limit have been determined; advantages and drawbacks of each method will be also discussed. (authors)

77

Quantitative characterization of PAHs in burn residue and soot samples and differentiation of pyrogenic PAHs from petrogenic PAHs - the 1994 mobile burn study  

Energy Technology Data Exchange (ETDEWEB)

Various aspects of in situ diesel fuel burning were examined when a series of mesoscale burns were conducted in Mobile Bay, Alabama in 1994. During each burn, samples were taken from the oil residue and the smoke plume and were analysed for PAHs and other hydrocarbons by gas chromatography/mass spectrometry. Quantitative results for the PAH composition and relative distribution of five alkylated PAH homologues and an additional 14 EPA-defined unsubstituted priority PAHs in the smoke particulate were obtained. The high temperature reached during each burn resulted in nearly complete destruction of the diesel. The burn residue and soot produced from the burns were estimated to account for 0.1-0.3 per cent and 8-14 per cent of the diesel by weight, respectively. The data helped in the estimation of the destruction efficiencies of the diesel PAHs and in the assessment of the environmental impact of an in situ burn. It was concluded that overall, in situ burning can help to mitigate the environmental impacts of an oil spill by consuming much of the spilled oil and thereby significantly reduce the total amount of PAHs in the oil. 31 refs., 7 tabs., 6 figs.

Wang, Z.; Fingas, M.; Sigouin, L.; Landriault, M.; Li, K.; Lambert, P. [Environment Canada, Ottawa, ON (Canada); Turpin, R.; Campagna, P. [U.S. Environmental Protection Agency, Edison, NJ (United States); Mullin, J. [U.S. Minerals Management Service, Herndon, VA (United States)

1998-09-01

78

Quantitative characterization of PAHs in burn residue and soot samples and differentiation of pyrogenic PAHs from petrogenic PAHs -- The 1994 Mobile burn study  

Energy Technology Data Exchange (ETDEWEB)

Several mesoscale burns were conducted in 1994 in Mobile Bay, AL, to study various aspects of diesel fuel burning in situ. The target PAHs in the diesel, residue, and soot samples collected during each burn were quantitatively characterized by GC/MS. A simple model based on mass balance of individual petroleum PAHs pre- and postburn was proposed to estimate the destruction efficiencies of the total petroleum PAHs. This study demonstrates the following: (1) Distributions of PAHs in the original diesel and soot were very different. (2) The average destruction efficiencies for the total target diesel PAHs including five alkylated PAH series and other EPA priority unsubstituted PAHs were greater than 99%. (3) Using the model, 27.3 kg of the diesel PAHs were destroyed for each 1,000 kg of diesel burned. These were mostly two- and three-ring PAHs and their alkylated homologues. (4) Combustion also generated trace amounts of high molecular weight five- and six-ring PAHs as well as the four-ring benz[a]anthracene. But the total mass of these pyrogenic PAHs was found to be extremely low: only 0.016, 0.032, and 0.048 kg of the five- and six-ring PAHs were generated by combustion in the three different scenarios for each 1,000 kg of diesel burned.

Wang, Z.; Fingas, M.; Shu, Y.Y.; Sigouin, L.; Landriault, M.; Lambert, P. [Environment Canada, Ottawa, Ontario (Canada). Emergencies Science Div.; Turpin, R.; Campagna, P. [Environmental Protection Agency, Edison, NJ (United States). Environmental Response Team; Mullin, J. [Dept. of the Interior, Herndon, VA (United States). Minerals Management Service

1999-09-15

79

Quantitative characterization of PAHs in burn residue and soot samples and differentiation of pyrogenic PAHs from petrogenic PAHs - the 1994 mobile burn study  

International Nuclear Information System (INIS)

Various aspects of in situ diesel fuel burning were examined when a series of mesoscale burns were conducted in Mobile Bay, Alabama in 1994. During each burn, samples were taken from the oil residue and the smoke plume and were analysed for PAHs and other hydrocarbons by gas chromatography/mass spectrometry. Quantitative results for the PAH composition and relative distribution of five alkylated PAH homologues and an additional 14 EPA-defined unsubstituted priority PAHs in the smoke particulate were obtained. The high temperature reached during each burn resulted in nearly complete destruction of the diesel. The burn residue and soot produced from the burns were estimated to account for 0.1-0.3 per cent and 8-14 per cent of the diesel by weight, respectively. The data helped in the estimation of the destruction efficiencies of the diesel PAHs and in the assessment of the environmental impact of an in situ burn. It was concluded that overall, in situ burning can help to mitigate the environmental impacts of an oil spill by consuming much of the spilled oil and thereby significantly reduce the total amount of PAHs in the oil. 31 refs., 7 tabs., 6 figs

80

A Study of the Macrozooplankton within the Samples Taken at theMobile Site from November 1977 through November 1978:A Data Report of theLawrence Berkeley Laboratory  

Energy Technology Data Exchange (ETDEWEB)

This report brings together the results of a re-examination of zooplankton samples from the Mobile OTEC site (29{sup o}N-88{sup o}W) in the northern Gulf of Mexico for macrozooplankton larger than 15 mm. Five cruises were made to the Mobile OTEC site aboard the R/V Virginia Key. Cruise dates were: 17-20 November 1977; 27 February-2 March 1978; 9-17 June 1978; 15-24 August 1978; and 21 October-3 November 1978.

Steen, John; Gunter, Gordon

1981-11-01

 
 
 
 
81

Evaluation of false positive responses by mass spectrometry and ion mobility spectrometry for the detection of trace explosives in complex samples.  

Science.gov (United States)

Secondary electrospray ionization-ion mobility-time of flight mass spectrometry (SESI-IM-TOFMS) was used to evaluate common household products and food ingredients for any mass or mobility responses that produced false positives for explosives. These products contained ingredients which shared the same mass and mobility drift time ranges as the analyte ions for common explosives. The results of this study showed that the vast array of compounds in these products can cause either mass or mobility false positive responses. This work also found that two ingredients caused either enhanced or reduced ionization of the target analytes. Another result showed that an IMS can provide real-time separation of ion species that impede accurate mass identifications due to overlapping isotope peak patterns. The final result of this study showed that, when mass and mobility values were used to identify an ion, no false responses were found for the target explosives. The wider implication of these results is that the possibility exists for even greater occurrences of false responses from complex mixtures found in common products. Neither IMS nor MS alone can provide 100% assurance from false responses. IMS, due to its low cost, ease of operation, rugged reliability, high sensitivity and tunable selectivity, will remain the field method of choice for the near future but, when combined with MS, can also reduce the false positive rate for explosive analyses. PMID:23998535

Crawford, C L; Hill, H H

2013-09-17

82

Mobile Phones, Financial Inclusion, and Growth  

Digital Repository Infrastructure Vision for European Research (DRIVER)

This paper assesses the impact of mobile phone rollout on economic growth in a sample of African countries from 1988 to 2007. Further, in light of the large financial infrastructure gap in African countries, we investigate whether mobile phone development fosters economic growth through better financial inclusion. In estimating the impact of mobile phone development on growth, we use mobile penetration rate as well as the cost of mobile local calls to capture mobile phone d...

Mihasonirina Andrianaivo; Kangni Kpodar

2012-01-01

83

Mobile Election  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Mobile phones have the potential of fostering political mobilisation. There is a significant political power in mobile technology. Like the Internet, mobile phones facilitate communication and rapid access to information. Compared to the Internet, however, mobile phone diffusion has reached a larger proportion of the population in most countries, and thus the impact of this new medium is conceivably greater. There are now more mobile phones in the UK than there are people (ave...

Long, Elena; Lovitskii, Vladimir; Thrasher, Michael; Traynor, David

2009-01-01

84

Mobile Advertising  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The aim of this project was to get an understanding of how companies adopt mobile as an advertising medium. The literature review aided in framing a draft of the factors that affect mobile advertising adoption and possible forms of mobile advertising. Considering the scope of the thesis work, branding strategy, service costs, personalization and privacy and platform were considered to be the factors that could affect the mobile advertising adoption. A few possible forms on mobile device we...

Alamuri, Lavanya

2009-01-01

85

Liquid phase separation of proteins based on electrophoretic effects in an electrospray setup during sample introduction into a gas-phase electrophoretic mobility molecular analyzer (CE-GEMMA/CE-ES-DMA)  

Science.gov (United States)

Nanoparticle characterization is gaining importance in food technology, biotechnology, medicine, and pharmaceutical industry. An instrument to determine particle electrophoretic mobility (EM) diameters in the single-digit to double-digit nanometer range receiving increased attention is the gas-phase electrophoretic mobility molecular analyzer (GEMMA) separating electrophoretically single charged analytes in the gas-phase at ambient pressure. A fused-silica capillary is used for analyte transfer to the gas-phase by means of a nano electrospray (ES) unit. The potential of this capillary to separate analytes electrophoretically in the liquid phase due to different mobilities is, at measurement conditions recommended by the manufacturer, eliminated due to elevated pressure applied for sample introduction. Measurements are carried out upon constant feeding of analytes to the system. Under these conditions, aggregate formation is observed for samples including high amounts of non-volatile components or complex samples. This makes the EM determination of individual species sometimes difficult, if not impossible. With the current study we demonstrate that liquid phase electrophoretic separation of proteins (as exemplary analytes) occurs in the capillary (capillary zone electrophoresis, CE) of the nano ES unit of the GEMMA. This finding was consecutively applied for on-line desalting allowing EM diameter determination of analytes despite a high salt concentration within samples. The present study is to our knowledge the first report on the use of the GEMMA to determine EM diameters of analytes solubilized in the ES incompatible electrolyte solutions by the intended use of electrophoresis (in the liquid phase) during sample delivery. Results demonstrate the proof of concept of such an approach and additionally illustrate the high potential of a future on-line coupling of a capillary electrophoresis to a GEMMA instrument. PMID:25109866

Weiss, Victor U.; Kerul, Lukas; Kallinger, Peter; Szymanski, Wladyslaw W.; Marchetti-Deschmann, Martina; Allmaier, Gunter

2014-01-01

86

Mobile learning in medicine  

Science.gov (United States)

This paper outlines the main infrastructure for implicating mobile learning in medicine and present a sample mobile learning application for medical learning within the framework of mobile learning systems. Mobile technology is developing nowadays. In this case it will be useful to develop different learning environments using these innovations in internet based distance education. M-learning makes the most of being on location, providing immediate access, being connected, and acknowledges learning that occurs beyond formal learning settings, in places such as the workplace, home, and outdoors. Central to m-learning is the principle that it is the learner who is mobile rather than the device used to deliver m learning. The integration of mobile technologies into training has made learning more accessible and portable. Mobile technologies make it possible for a learner to have access to a computer and subsequently learning material and activities; at any time and in any place. Mobile devices can include: mobile phone, personal digital assistants (PDAs), personal digital media players (eg iPods, MP3 players), portable digital media players, portable digital multimedia players. Mobile learning (m-learning) is particularly important in medical education, and the major users of mobile devices are in the field of medicine. The contexts and environment in which learning occurs necessitates m-learning. Medical students are placed in hospital/clinical settings very early in training and require access to course information and to record and reflect on their experiences while on the move. As a result of this paper, this paper strives to compare and contrast mobile learning with normal learning in medicine from various perspectives and give insights and advises into the essential characteristics of both for sustaining medical education.

Serkan Güllüoü?lu, Sabri

2013-03-01

87

Staging Mobilities  

DEFF Research Database (Denmark)

In recent years, the social sciences have taken a “mobilities turn.” There has been a developing realisation that mobilities do not “just happen.” Mobilities are carefully and meticulously designed, planned and staged (from above). However, they are equally importantly acted out, performed and lived as people are “staging themselves” (from below). Staging mobilities is a dynamic process between “being staged” (for example, being stopped at traffic lights) and the “mobile staging” of interacting individuals (negotiating a passage on the pavement). Staging Mobilities is about the fact that mobility is more than movement between point A and B. It explores how the movement of people, goods, information, and signs influences human understandings of self, other and the built environment. Moving towards a new understanding of the relationship between movement, interaction and environments, the book asks: what are the physical, social, technical, and cultural conditions to the staging of contemporary urban mobilities?

Jensen, Ole B.

2013-01-01

88

Staying Mobile  

Science.gov (United States)

... Mobile Staying Mobile In this article Effective symptom management Ongoing management of symptoms caused by MS is ... evolved over thousands of years. For many people, style is the primary consideration. People with MS may ...

89

Mobile payment  

CERN Document Server

Paying with mobile devices such as mobile phones or smart phones will expand worldwide in the coming years. This development provides opportunities for various industries (banking, telecommunications, credit card business, manufacturers, suppliers, retail) and for consumers.

Lerner, Thomas

2013-01-01

90

Job Mobility in Ireland  

Digital Repository Infrastructure Vision for European Research (DRIVER)

This paper investigates the factors that determine job-to-job mobility in Ireland over the period 1995 to 2001. It finds that labour market experience, working in the public sector, human capital, whether a person is overskilled and the sector they work in are important determinants of job change. In addition, the paper finds the rate of job mobility in Ireland practically doubled over the period. The sample is divided into two time periods and a decomposition technique is applied to ascertai...

Bergin, Ms Adel

2008-01-01

91

Job mobility in Ireland  

Digital Repository Infrastructure Vision for European Research (DRIVER)

This paper investigates the factors that determine job-to-job mobility in Ireland over the period 1995 to 2001. It finds that labour market experience, working in the public sector, whether a person is overskilled, the sector they work in and their occupation are important determinants of voluntary job change. The paper finds the rate of voluntary job mobility in Ireland trebled over the period 1995 to 2000. The sample is divided into two time periods and a decomposition technique is applied ...

Bergin, Adele

2009-01-01

92

Mobile Semiotics  

DEFF Research Database (Denmark)

This chapter aims to understand the mobile condition of contemporary life with a particular view to the signifying dimension of the environment and its ‘readability’. The chapter explores the potentials of semiotics and its relationship to the new mobilities literature. What takes place is a ‘mobile sense making’ where signs and materially situated meanings connect to the moving human body and thus create particular challenges and complexities of making sense of the world. The chapter includes notions of mobility systems and socio-technical networks in order to show how a ‘semiotic layer’ may work to afford or restrict mobile practices.

Jensen, Ole B.

2014-01-01

93

Development and validation of InnoQuant™, a sensitive human DNA quantitation and degradation assessment method for forensic samples using high copy number mobile elements Alu and SVA.  

Science.gov (United States)

There is a constant need in forensic casework laboratories for an improved way to increase the first-pass success rate of forensic samples. The recent advances in mini STR analysis, SNP, and Alu marker systems have now made it possible to analyze highly compromised samples, yet few tools are available that can simultaneously provide an assessment of quantity, inhibition, and degradation in a sample prior to genotyping. Currently there are several different approaches used for fluorescence-based quantification assays which provide a measure of quantity and inhibition. However, a system which can also assess the extent of degradation in a forensic sample will be a useful tool for DNA analysts. Possessing this information prior to genotyping will allow an analyst to more informatively make downstream decisions for the successful typing of a forensic sample without unnecessarily consuming DNA extract. Real-time PCR provides a reliable method for determining the amount and quality of amplifiable DNA in a biological sample. Alu are Short Interspersed Elements (SINE), approximately 300bp insertions which are distributed throughout the human genome in large copy number. The use of an internal primer to amplify a segment of an Alu element allows for human specificity as well as high sensitivity when compared to a single copy target. The advantage of an Alu system is the presence of a large number (>1000) of fixed insertions in every human genome, which minimizes the individual specific variation possible when using a multi-copy target quantification system. This study utilizes two independent retrotransposon genomic targets to obtain quantification of an 80bp "short" DNA fragment and a 207bp "long" DNA fragment in a degraded DNA sample in the multiplex system InnoQuant™. The ratio of the two quantitation values provides a "Degradation Index", or a qualitative measure of a sample's extent of degradation. The Degradation Index was found to be predictive of the observed loss of STR markers and alleles as degradation increases. Use of a synthetic target as an internal positive control (IPC) provides an additional assessment for the presence of PCR inhibitors in the test sample. In conclusion, a DNA based qualitative/quantitative/inhibition assessment system that accurately predicts the status of a biological sample, will be a valuable tool for deciding which DNA test kit to utilize and how much target DNA to use, when processing compromised forensic samples for DNA testing. PMID:25212510

Pineda, Gina M; Montgomery, Anne H; Thompson, Robyn; Indest, Brooke; Carroll, Marion; Sinha, Sudhir K

2014-11-01

94

Mobile phone  

International Nuclear Information System (INIS)

Almost the entire Norwegian population has cell phone. The usefulness of the cell phone is great, but can use a mobile phone to health or discomfort? How can exposure be reduced? NRPA follows research and provides advice on mobile phone use. (AG)

95

Mobility extended  

Directory of Open Access Journals (Sweden)

Full Text Available Mobility today comprises not just being mobile in a traditional sense. It is linked with a range of sociocultural facets to be considered in connection with it, alongside with the specific contemporaneous mythology that led to its rise. All that will be lined out in the following, opening up new perspectives and directions for further research.

Gehmann, Ulrich

2009-03-01

96

Mobility Challenges  

DEFF Research Database (Denmark)

This article takes point of departure in the challenges to understand the importance of contemporary mobility. The approach advocated is a cross-disciplinary one drawing on sociology, geography, urban planning and design, and cultural studies. As such the perspective is to be seen as a part of the so-called ‘mobility turn’ within social science. The perspective is illustrative for the research efforts at the Centre for Mobility and Urban Studies (C-MUS), Aalborg University. The article presents the contours of a theoretical perspective meeting the challenges to research into contemporary urban mobilities. In particular the article discusses 1) the physical city, its infrastructures and technological hardware/software, 2) policies and planning strategies for urban mobility and 3) the lived everyday life in the city and the region.

Jensen, Ole B.; Lassen, Claus

2011-01-01

97

Mobile Platforms and Development Environments  

CERN Document Server

Mobile platform development has lately become a technological war zone with extremely dynamic and fluid movement, especially in the smart phone and tablet market space. This Synthesis lecture is a guide to the latest developments of the key mobile platforms that are shaping the mobile platform industry. The book covers the three currently dominant native platforms -- iOS, Android and Windows Phone -- along with the device-agnostic HTML5 mobile web platform. The lecture also covers location-based services (LBS) which can be considered as a platform in its own right. The lecture utilizes a sampl

Helal, Sumi; Li, Wengdong

2012-01-01

98

Mobile phones and mobile communication  

DEFF Research Database (Denmark)

With staggering swiftness, the mobile phone has become a fixture of daily life in almost every society on earth. In 2007, the world had over 3 billion mobile subscriptions. Prosperous nations boast of having more subscriptions than people. In the developing world, hundreds of millions of people who could never afford a landline telephone now have a mobile number of their own. With a mobile in our hand many of us feel safer, more productive, and more connected to loved ones, but perhaps also more distracted and less involved with things happening immediately around us. Written by two leading researchers in the field, this volume presents an overview of the mobile telephone as a social and cultural phenomenon. Research is summarized and made accessible though detailed descriptions of ten mobile users from around the world. These illustrate popular debates, as well as deeper social forces at work. The book concludes by considering three themes: 1) the tighter interlacing of daily activities 2) a revolution of control in the social sphere, and 3) the arrival of a world where the majority of its inhabitants are reachable, anytime, anywhere.

Ling, Richard; Donner, Jonathan

2009-01-01

99

Mobile healthcare.  

Science.gov (United States)

Mobile technology's presence in healthcare has exploded over the past five years. The increased use of mobile devices by all segments of the US population has driven healthcare systems, providers, and payers to accept this new form of communication and to develop strategies to implement and leverage the use of mobile healthcare (mHealth) within their organizations and practices. As healthcare systems move toward a more value-driven model of care, patient centeredness and engagement are the keys to success. Mobile healthcare will provide the medium to allow patients to participate more in their care. Financially, mHealth brings to providers the ability to improve efficiency and deliver savings to both them and the healthcare consumer. However, mHealth is not without challenges. Healthcare IT departments have been reluctant to embrace this shift in technology without fully addressing security and privacy concerns. Providers have been hesitant to adopt mHealth as a form of communication with patients because it breaks with traditional models. Our healthcare system has just started the journey toward the development of mHealth. We offer an overview of the mobile healthcare environment and our approach to solving the challenges it brings to healthcare organizations. PMID:23330297

Morgan, Stephen A; Agee, Nancy Howell

2012-01-01

100

Inferring Human Mobility from Sparse Low Accuracy Mobile Sensing Data  

DEFF Research Database (Denmark)

Understanding both collective and personal human mobility is a central topic in Computational Social Science. Smartphone sensing data is emerging as a promising source for studying human mobility. However, most literature focuses on high-precision GPS positioning and high-frequency sampling, which is not always feasible in a longitudinal study or for everyday applications because location sensing has a high battery cost. In this paper we study the feasibility of inferring human mobility from sparse, low accuracy mobile sensing data. We validate our results using participants' location diaries, and analyze the inferred geographical networks, the time spent at different places, and the number of unique places over time. Our results suggest that low resolution data allows accurate inference of human mobility patterns.

Cuttone, Andrea; JØrgensen, Sune Lehmann

2014-01-01

 
 
 
 
101

Atomic Mobile  

Science.gov (United States)

Learners make a mobile model of a carbon atom using clay, wire, and pipe cleaners. Learners will use the periodic table as a guide and explore how atoms are made up of a nucleus of protons and neutrons with orbiting electrons. The activity includes a PDF file of a periodic table and a guide for reading it.

History, American M.

2012-06-26

102

Mobile Phones, Financial Inclusion, and Growth  

Directory of Open Access Journals (Sweden)

Full Text Available This paper assesses the impact of mobile phone rollout on economic growth in a sample of African countries from 1988 to 2007. Further, in light of the large financial infrastructure gap in African countries, we investigate whether mobile phone development fosters economic growth through better financial inclusion. In estimating the impact of mobile phone development on growth, we use mobile penetration rate as well as the cost of mobile local calls to capture mobile phone diffusion, while financial inclusion is measured by the number of deposits or loans per head. Using the System Generalized Method of Moments (GMM estimator to address endogeneity issues, the results confirm that mobile phone development contributes significantly to economic growth in African countries. Part of the positive effect of mobile phone penetration on growth comes from greater financial inclusion.

Mihasonirina Andrianaivo

2012-05-01

103

Mobile Customer Relationship Management and Mobile Security  

Science.gov (United States)

The purpose of this study is twofold. First, in order to guarantee a coherent discussion about mobile customer relationship management (mCRM), this paper presents a conceptualization of mCRM delineating its unique characteristics because of Among the variety of mobile services, considerable attention has been devoted to mobile marketing and in particular to mobile customer relationship management services. Second, the authors discusses the security risks in mobile computing in different level(user, mobile device, wireless network,...) and finally we focus on enterprise mobile security and it's subgroups with a series of suggestion and solution for improve mobile computing security.

Sanayei, Ali; Mirzaei, Abas

104

The African Mobile Story  

DEFF Research Database (Denmark)

This book identifies the factors that has enabled the growth of mobile telephony in Africa. The book covers the regulatory factors, the development and usage of mobile application, mobile security and sustainable power source for mobile networks

2014-01-01

105

Professional Flash Lite Mobile Development  

CERN Document Server

Discover how to create Flash Lite mobile apps from the ground up. Adobe Flash is an ideal choice for developing rich interactive content for "Flash-enabled" mobile devices; and with this book, you'll learn how to create unique applications with Flash Lite. Through a series of code samples and extensive example applications, you'll explore the core concepts, key features, and best practices of the Flash Lite player. Coverage reveals various ways to develop Flash mobile content, create applications with a cross-platform programming framework based on the Model, View and Controller conc

Anderson, J G

2010-01-01

106

NETWORK MOBILITY SUPPORTED PROXY MOBILE IPV6  

Directory of Open Access Journals (Sweden)

Full Text Available Proxy Mobile IPV6 (PMIPV6 is a network-based mobility management protocol, designed to keep track of individual mobile node’s movement. So a mobile node can easily roam in PMIPV6 network without changing it’s IP address. Network Mobility-Basic Support Protocol (NEMO-BSP, based on MIPV6, is the protocol designed for mobility management of NEMO in MPIV6 network. But NEMO-BSP cannot be directly used in PMIPV6 due to differences in the underlying protocols. To make PMIPV6 as a complete mobility management protocol, functionality of PMIPV6 should be enhanced to support network mobility in PMIPV6. This work enhances functionality of PMIPV6 and NEMO-BSP protocols and proposes a new architecture called NEMO supported PMIPV6 that supports movement of mobile nodes as well as network mobility in PMIPV6 network.

Ananthi Jebaseeli SamuelRaj

2014-01-01

107

Optimum Mobility Performance with Mobile IP & SIP?  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Mobility will place an efficient role in now days in the wireless communications. Mobile IP andSIP provide the mobility service to the handset users. The problems in Mobile IP and SIP s are triangular,handoff, Intra domain problems. These problems create signal lose and improper signalling to the user. Toovercome these we provide add of service to the Mobile IP and SIP with the integration of the two services.This service provides optimum performance of the system.

Naresh Kumar, B.; Krishnaiah?, Dr R. V.

2013-01-01

108

Exploring the Mobility of Mobile Phone Users  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Mobile phone datasets allow for the analysis of human behavior on an unprecedented scale. The social network, temporal dynamics and mobile behavior of mobile phone users have often been analyzed independently from each other using mobile phone datasets. In this article, we explore the connections between various features of human behavior extracted from a large mobile phone dataset. Our observations are based on the analysis of communication data of 100000 anonymized and ran...

Csaji, Balazs Cs; Browet, Arnaud; Traag, Vincent; Delvenne, Jean-charles; Huens, Etienne; Dooren, Paul; Smoreda, Zbigniew; Blondel, Vincent

2012-01-01

109

Mobility Impact on Performance of Mobile Grids  

CERN Document Server

Wireless mobile grids are one of the emerging grid types, which help to pool the resources of several willing and cooperative mobile devices to resolve a computationally intensive task. The mobile grids exhibit stronger challenges like mobility management of devices, providing transparent access to grid resources, task management and handling of limited resources so that resources are shared efficiently. Task execution on these devices should not be affected by their mobility. The proposed work presents performance evaluation of wireless mobile grid using normal walk mobility model. The normal walk model represents daily motion of users and the direction of motion is mostly symmetric in a real life environment, thus it is effective in location updating of a mobile station and in turn helps task distribution among these available mobile stations. Some of the performance parameters such as Task Execution Time, task failure rate, communication overhead on Brokering Server and Monitoring Cost are discussed.

Nandeppanavar, A S; Manvi, S S; Shridhar,

2010-01-01

110

Mobility Divides : ‘Staging’ and designing differential mobilities  

DEFF Research Database (Denmark)

Contemporary mobilities are cultural and social manifestations, and the mobile practices in the everyday life of billions of humans are re-configuring senses of place, self, other and relationships to the built environment. The way ‘mobile situations’ are staged in designed and built environments are increasingly becoming ‘second nature’ but also expressions of power, exclusion, and difference. In this talk I will be applying a perspective of ‘mobile situationism’ illustrating how mobile everyday life practices are staged ‘from above’ in planning and policy frameworks, design codes and architectural designs, but also how the situated and embodied mobile everyday life practices are staged ‘from below’ in concrete acts of choice concerning modes of mobilities, ways of moving and interacting. The ‘staging mobilites’ framework opens up to an understanding of the meaning of ‘mobilities design’ in the everyday life and cast light on how design and ‘materialities of mobilites’ are creating differential mobilities across societies, social networks, and communities of practices.

Jensen, Ole B.

111

Sampling SIM: Sampling Distributions  

Science.gov (United States)

Created by authors Beth Chance, Bob delMas and Joan Garfield, this webpage provides instructions for teaching sampling distributions using Sampling SIM software. It includes information regarding prerequisite knowledge, common misconceptions, and objectives, as well as links to an activity and a pre/post-test. This is a fairly comprehensive overview of the tools need for sampling distributions. The eight part structure employed by the authors is quite useful in assessing students knowledge gained through this activity.

Chance, Beth; Delmas, Bob; Garfield, Joan

2009-03-16

112

Mobility Balance Sheet 2009  

International Nuclear Information System (INIS)

The Mobility Balance Sheet provides an overview of the state of the art of mobility in the Netherlands. In addition to describing the development of mobility this report also provides explanations for the growth of passenger and freight transport. Moreover, the Mobility Balance Sheet also focuses on a topical theme: the effects of economic crises on mobility.

113

Mobile video with mobile IPv6  

CERN Document Server

Increased reliance on mobile devices and streaming of video content are two of the most recent changes that have led those in the video distribution industry to be concerned about the shifting or erosion of traditional advertising revenues. Infrastructure providers also need to position themselves to take advantage of these trends. Mobile Video with Mobile IPv6provides an overview of the current mobile landscape, then delves specifically into the capabilities and operational details of IPv6. The book also addresses 3G and 4G services, the application of Mobile IPv6 to streaming and other mobil

Minoli, Daniel

2012-01-01

114

SCPRI's anthropo and environmental mobile spectrometric units  

International Nuclear Information System (INIS)

Since 1981 the French ''Service Central de Protection Contre les Rayonnements Ionisants'' (S.C.P.R.I.) has been developing and improving mobile units capable of reaching accident areas to carry out large scale screening of individuals and to make environmental sampled measurements of fallout after a nuclear accident. This note outlines the capabilities of these mobile units. (author)

115

Mobile Scientific Calculator  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The mobile and wireless industry is entering an exciting time. Demand for mobile technology is growing at a tremendous rate. Corporations are deploying mobile applications that provide substantial business benefits, and consumers are readily adopting mobile data applications. We present scientific application for mobile phone in steps of software engineering project starting from data gathering, data analysis, designing, coding, packaging, testing and deploying, Mobile Scientific Calculator (...

Mohammed Abdulrahim Hamdi

2012-01-01

116

Mobile Search and Advertising  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Mobile advertising is a rapidly growing sector providing brands and marketing agencies the opportunity to connect with consumers beyond traditional and digital media and instead communicate directly on their mobile phones. Mobile advertising will be intrinsically linked with mobile search, which has transported from the internet to the mobile and is identified as an area of potential growth. The result of mobile searching show that as a general rule such search result exceed 1...

Lovitskii, Vladimir; Mccaffery, Colin; Thrasher, Michael; Traynor, David; Wright, Peter

2009-01-01

117

Exploring technology acceptance for mobile services  

Directory of Open Access Journals (Sweden)

Full Text Available Purpose: Mobile phone industries are no longer relying on voice services. It is predicted that data services are expected to be a remediation for the declining of average revenue per user (ARPU in telecommunication market. The purpose of this paper is to find the factors that influence the acceptance/adoption of mobile services.Design/methodology/approach: This paper utilizes quantitative method. Questionnaire were distributed to collect the data. The questionnaires are designed specifically to address the factors related to mobile services. Later on, this paper uses Analytical Hierarchical Process (AHP and Cluster analysis to identify the factors that influence the adoption of mobile services.Findings: The results show that ease of use and usefulness are top two factors that influence the adoption of mobile services.Research limitations/implications: The sample for the study is relatively small. For future research, the sample should be increased. The data collection should also look into different devices and operating system of mobile phones to find if there is any significant difference in adopting mobile services.Practical implications: This framework is expected to be able to help the mobile services provider to design better mobile services that can attract users to adopt them. Originality/value: This is the follow on research on the previous study that employed different method. This study is to confirm and support the findings from previous study.

Tugrul Daim

2011-07-01

118

Optimum Mobility Performance with Mobile IP & SIP?  

Directory of Open Access Journals (Sweden)

Full Text Available Mobility will place an efficient role in now days in the wireless communications. Mobile IP andSIP provide the mobility service to the handset users. The problems in Mobile IP and SIP s are triangular,handoff, Intra domain problems. These problems create signal lose and improper signalling to the user. Toovercome these we provide add of service to the Mobile IP and SIP with the integration of the two services.This service provides optimum performance of the system.

B. Naresh Kumar

2013-10-01

119

Priority Based Mobile Transaction Scheme Using Mobile Agents  

Digital Repository Infrastructure Vision for European Research (DRIVER)

We define a priority based mobile transaction scheme in which mobile users can share data stored in the cache of a mobile agent which is a special mobile node for coordinating the sharing process. This framework allows mobile affiliation work group to be formed dynamically with a mobile agent and mobile hosts. Using short range wireless communication technology, mobile users can simultaneously access the data from the cache of the mobile agent. Data Access Manager module at the mobile agent e...

Walter Jeyakumar, J. L.; Rajesh, R. S.

2011-01-01

120

Mobile Operating Systems  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Mobile phones are used by every people in today’s life. We use mobile phones without knowing the different factors that a mobile used including its technology, operating system, CPU ,RAM etc. Many types of operating system are used by different mobile. Every operating system has their advantage

Vipin Kamboj; Hitesh Gupta

2012-01-01

 
 
 
 
121

Mobile Operating Systems  

Directory of Open Access Journals (Sweden)

Full Text Available Mobile phones are used by every people in today’s life. We use mobile phones without knowing the different factors that a mobile used including its technology, operating system, CPU ,RAM etc. Many types of operating system are used by different mobile. Every operating system has their advantage

Vipin Kamboj

2012-04-01

122

Next generation mobile broadcasting  

CERN Document Server

Next Generation Mobile Broadcasting provides an overview of the past, present, and future of mobile multimedia broadcasting. The first part of the book-Mobile Broadcasting Worldwide-summarizes next-generation mobile broadcasting technologies currently available. This part covers the evolutions of the Japanese mobile broadcasting standard ISDB-T One-Seg, ISDB-Tmm and ISDB-TSB; the evolution of the South Korean T-DMB mobile broadcasting technology AT-DMB; the American mobile broadcasting standard ATSC-M/H; the Chinese broadcasting technologies DTMB and CMMB; second-generation digital terrestrial

Gómez-Barquero, David

2013-01-01

123

IPv4 Mobility Support  

Directory of Open Access Journals (Sweden)

Full Text Available Mobile computing offers mobile users anytime, anywhere bi-directional reliable access to the Internet. Mobile IP as a network layer routing protocol has been designed by the IETF (Internet Engineering Task Force to provide solutions to the requirements of mobile computing. However, there are still many technical obstacles that must be overcome before Mobile IP can be widely deployed. Moreover, since mobility performance is the outcome of the cooperation of different layers, merely focusing on the network layer performance is not sufficient. In other words, the operation of Mobile IP depends heavily on lower layer mechanisms, and has direct implications on upper layer performance.

Vattumilli Venkata Rajesh

2014-03-01

124

Mobile, flexible user interfaces  

Digital Repository Infrastructure Vision for European Research (DRIVER)

This master thesis provides a set of principles, or guidelines, which aim to give practical and useful information in the process of developing user interfaces on mobile devices. When talking about mobile devices the main focus is on PDAs and Smartphones, but it also incorporates portable PCs (including ultra portable PCs), tablet PCs and other mobile phones. The commonly used platforms, or operating systems, on these devices are Windows Mobile, Palm, Symbian, Linux and the new mobile adapte...

Jansson, Tommy

2007-01-01

125

Mobile Commerce and Related Mobile Security Issues  

Directory of Open Access Journals (Sweden)

Full Text Available This article will discuss how m-commerce conducts transactions of the mobile device through Internet and how these technologies are developed throughout the years. The article will also judge the security and privacy levels when dealing with mobile commerce and what kind of issues are encountered when using mobile commerce systems. The article will also evaluate the solutions on how m-commerce issues are avoided and how they are tackled by the technology evolution

Ashish Wadhaval#1 , Rugved Mehta#2 , Ashlesha Gawade

2013-04-01

126

Designing Mobilities : Staging Materialities of Mobilities  

DEFF Research Database (Denmark)

Within the so-called ‘mobilities turn’ (Adey 2010; Cresswell 2006; Urry 2007) much research has taken place during the last decade bringing mobilities into the centre of sociological analysis. However, the materiality and spatiality of artefacts, infrastructures, and sites hosting mobilities are often still not engaged with in a sufficiently manner. Often social sciences keep distance to the physical and material as if the social was still to be understood as a realm separate of technology, architecture, and design (for a critique of this see; Latour 2005 and Urry 2000). This paper takes point of departure in the sociological perspective termed ‘Staging Mobilities’ (Jensen 2013a) and utilizes this as an analytical frame for exploring cases of mobility design. The paper put focus on how the material shape, design and architectures of technologies, spaces and sites influence mobilities practices. Everyday life mobilities take place in complex socio-technical systems where the over-layering of hard infrastructures, with design codes and protocols shapes the ‘mobile biotopes’ of the everyday life. By exploring the very tangible and concrete designs of for example everyday life transit spaces, mobilitiy technologies or urban sites of movement we get much closer to understanding the meaning of mobilities to social interaction and culture. The cases are still representing work-in-progress but will be reported in the book ‘Designing Mobilites’ (Jensen 2013b) and will cover the four cases of: motorway ecologies, bicycle systems design, urban shopping malls and a train transit hub.

Jensen, Ole B.

127

MOBILE AGENT: EMERGING TECHNOLOGY  

Directory of Open Access Journals (Sweden)

Full Text Available Mobile agent technology has been promoted as an emerging technology that makes it much easier to design, implement, and maintain distributed systems, introduction to basic concepts of mobile agents like agent mobility, agent types and places and agent communication. Then benefits of the usage of mobile agents are summarized and illustrated by selected applications. The next section lists requirements and desirable properties for mobile agent languages and systems. We study the main features, challenges, and open problems of mobile agent technology.

RAJGURU P. V. DR. DESHMUKH S. D

2011-12-01

128

Main aspects of phone and mobile’s users  

Directory of Open Access Journals (Sweden)

Full Text Available Telephone surveys, with CATI technique, are frequently used in market research. But the phone’s owners database don’t take into account an important target of the population. It is those who own only mobile phones. In the paper this section of telephone users is analyzed in its specificity, in view of avoiding biases in samples referred to the population as a whole.

Valeria de Martino

2007-10-01

129

Gone Mobile? (Mobile Libraries Survey 2010)  

Science.gov (United States)

Librarians, like patrons and researchers, are caught between traditional library service models and the promise of evolving information technologies. In recent years, professional conferences have strategically featured programs and presentations geared toward building a mobile agenda and adapting or adopting services to meet new demands of mobile

Thomas, Lisa Carlucci

2010-01-01

130

MOBILE COMMERCE APPROACH BASED ON MOBILE AGENT  

Directory of Open Access Journals (Sweden)

Full Text Available Telecommunications technologies are advanced; they introduced new technologies to meet the needs of individuals and organizations to make commercial transactions, where we find the birth of e-commerce after the emergence of the Internet. But this approach has limits like the use of a client / server model, which limit the use of these transactions in anytime and anywhere. Recently and after the emergence of the wireless networking, the commerce increase the range of the E-commerce applications in anytime and anywhere by the technology of mobile commerce. In this article, we propose an approach of mobile commerce based mobile agent with the aim to deploy the mobile agent paradigm for mobile commerce applications.

Oussama Zerdoumi

2011-01-01

131

Mobility Balance Sheet 2011  

International Nuclear Information System (INIS)

This is the fifth publication in which the Knowledge Institute for Mobility Policy gives an overview of the annual status of mobility in the Netherlands. For the first time, also a glimpse is given into the next two years.

132

Mobilization and weathering  

International Nuclear Information System (INIS)

The part of the geochemical cycle that encompasses initial mobilization by erosion and weathering of igneous rocks, is discussed, along with consideration of mobilization through continental surficial sediments. Figures are given for U and Th and their isotopes. (author)

133

Tandem mobile robot system  

Science.gov (United States)

A robotic vehicle system for terrain navigation mobility provides a way to climb stairs, cross crevices, and navigate across difficult terrain by coupling two or more mobile robots with a coupling device and controlling the robots cooperatively in tandem.

Buttz, James H. (Albuquerque, NM); Shirey, David L. (Albuquerque, NM); Hayward, David R. (Albuquerque, NM)

2003-01-01

134

Mobile Robot Command  

Directory of Open Access Journals (Sweden)

Full Text Available This article presents the components of a mobile robot assembled bymodules; its mechanical, driving and command systems are described.The dedicated software and the programming manner of different tasksfor the mobile robot are shown.

C?lin-Octavian Miclosin?

2008-01-01

135

Mobile Claims Management  

Digital Repository Infrastructure Vision for European Research (DRIVER)

As of April 2010, several Swiss motor insurers offer mobile apps that enable customers to submit a loss report. This article discusses the emergence of mobile apps in the insurance industry and the impact of mobile technology on claims management in motor insurance. We also present a demonstrator that goes beyond existing solutions by integrating a mobile app with a commercial claims management enterprise system. The technical aspects are complemented by results from expert interviews on mobi...

Oliver Baecker; Lukas Ackermann; Walter Ackermann; Elgar Fleisch

2010-01-01

136

Fixed mobile convergence handbook  

CERN Document Server

From basic concepts to future directions, this handbook provides technical information on all aspects of fixed-mobile convergence (FMC). The book examines such topics as integrated management architecture, business trends and strategic implications for service providers, personal area networks, mobile controlled handover methods, SIP-based session mobility, and supervisory and notification aggregator service. Case studies are used to illustrate technical and systematic implementation of unified and rationalized internet access by fixed-mobile network convergence. The text examines the technolo

Ahson, Syed A

2010-01-01

137

Mobile Services Adoption Model  

Digital Repository Infrastructure Vision for European Research (DRIVER)

This research presents an explanatory model for consumers' adoption of mobile services. This model uses the Unified Theory of Acceptance and Use of Technology presented by Venkatesh in 2003 as a baseline and integrates the Perceived Enjoyment, Mobile Affinity, Perceived Price of Service and the Frequency of Mobile Usage as to investigate the Attitude and the Intention to Use mobile services. The proposed model was empirically tested using data collected from a field survey where 1095 responde...

Abu Ghannam, Bashar

2011-01-01

138

Mobile Content Revenue Assurance  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Mobile content is a steadily growing business, which is expected to keep growing at a fair rate according to the reports published by the Ministry of Transport and Communications of Finland. At the same time revenue assurance as a corporate level function for mobile operators has received a lot of attention in the recent years. Coupled with the growing market and new billing models emerging for mobile content, the idea for prioritizing the revenue leakage risk areas of mobile content was chos...

Rautopuro, Lasse

2009-01-01

139

Evaluating Mobile Applications for Urban Tourism  

Directory of Open Access Journals (Sweden)

Full Text Available With the spread of mobile communication, destinations have to decide whether, and in case how, to inform and drive their guests through smartphones.Three groups of issues must be addressed. a. Mobile content and its usability differ from those designed for desktop. b. Smartphones use web pages as well as proprietary applications. c. Smartphones connect both through telecoms and hotspots, posing specific cost problems. With a view to understanding how these issues have been addressed by urban destinations, a reasonably representative sample of forty-four European destinations was identified.To compare the quality of the mobile applications available in the sample destinations, the 7Loci meta-model – already well established for destination websites – was used. More discursively, some critical points were finally identified, and the mobile services available on-site were compared with those offered for the same cities by four global platforms: TripAdvisor, Foursquare, TripWolf and Google.

Roberto Peretta

2014-06-01

140

Undergraduate Attitudes and Expectations for Mobile Banking  

Directory of Open Access Journals (Sweden)

Full Text Available This study analyzed the undergraduate students' willingness on adopting the usage of mobile phone in banking transaction' focusing on Islamic banking in FT, Labuan. Research has been conducted to analyze the students' attitudes and expectations toward mobile banking. Furthermore, students' socio-demographic elements were also studied and analyzes in relations with the study. As noted, sample was taken from students of Universiti Malaysia Sabah, Labuan International Campus. A total of 615 students were approached using convenience sampling modes. And, the finding illustrate that students tend to learn and adopt mobile banking in their banking transactions. In addition, the results also demonstrate students' attitudes and expectations to be the most consistent explanatory factors in predicting their willingness on adopting mobile banking usage in the future. In the nutshell, the findings were in-line with the previous study conducted by Howcroft, Hamilton and Hewer (2002, Sivanand, Geeta and Suleep (2004 and Laforet and Li (2005.

Hanudin Amin

2006-12-01

 
 
 
 
141

Mobile first graafikolle  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Opinna?ytetyo?ni ka?sittelee Mobile first -filosofiaa graafikon na?ko?kulmasta. Mobile first -filosofia on kehitetty parantamaan web-sivustojen suunnittelua ja toteutusta nykyaikaiseen laitekantaan. Opinna?ytetyo?ssa? tutustutaan Mobile first -filosofiaan ja sen pohjalta mobiililaitteelle tehtyyn web-sivustoon. Sivusto on asiakkaalle suunniteltu ja toteutettu asunto-osakeyhtio?n myyntisivuston prototyyppi.

Nousiainen, Sari

2013-01-01

142

Mobile Student Information System  

Science.gov (United States)

Purpose: A mobile student information system (MSIS) based on mobile computing and context-aware application concepts can provide more user-centric information services to students. The purpose of this paper is to describe a system for providing relevant information to students on a mobile platform. Design/methodology/approach: The research…

Asif, Muhammad; Krogstie, John

2011-01-01

143

MOBILE BUSINESS APPROACH BASED ON MOBILE AGENT  

Directory of Open Access Journals (Sweden)

Full Text Available Users today want the opportunity to make (or manage a businesses in anytime and anywhere via their mobile devices. This paper proposes the architecture with mobile agent for the mobile businesses (m-business. M-business appeared as the promising approach to drive the vague following one of electronic business (e-business. Most of the e-busines [9] applications uses the traditional model client/server in which a commercial operation requires generally a link of stable communication being established between the customer and the server, and the traditional approach client/server [8] constitutes an obstacle to the development of application of m-business. The proposed architecture introduces several advantages: in the first place, allow the consumers to manage their commercial business driven by types of mobile devices (phones, PDAs, etc. .... at any time and wherever. Secondly, minimize the waiting time of the customer, and the quantity of transferring information. Third, this architecture addresses the problem of time limited and expensive connection for mobile users. The Mobile agents will be used on a single level: research agent. Every research mobile agent will be used to visit the target server site of the application to collect the information’s for his client, which allows it to interact locally with a server, and so to reduce the traffic on the network by transmitting only the useful data.

Ahmed Aloui

2011-01-01

144

Instant Kendo UI mobile  

CERN Document Server

Filled with practical, step-by-step instructions and clear explanations for the most important and useful tasks. Written as practical recipes, Instant Kendo UI Mobile How-to will show you all you need to know to build your first mobile application utilizing the Kendo UI Mobile framework and its components.This book is for web application developers who are looking forward to build a mobile website or an application. It requires basic knowledge of HTML, CSS, and JavaScript. This guide assumes that you are new to the topic and provides a step-by-step approach to building mobile applications usin

Ganatra, Sagar

2013-01-01

145

Mobile satellite communications handbook  

CERN Document Server

Mobile Satellite Communications Handbook, Second Edition, serves to provide background for the earliest proposals to the most current advances in technology used for INMARSAT and NON-INMARSAT mobile-satellite communications.  Revised edition will serve both technical and non-technical professionals who rely every day on mobile satellite communications Describes and explains historic, current, and planned civil, commercial, and military mobile satellite communication systems.  1st Edition charts and tables updated and expanded with current material for today's mobile satellite technology

Cochetti, Roger

2014-01-01

146

Sampling Error  

Science.gov (United States)

This one page article, created by Statistics Canada, describes the meaning behind random sampling error. It points our the relationship of the random sampling error with the sample size, population size, variability of the characteristic, sampling plan, and measuring sampling error. While brief, this provides valuable information and also links users to additional resources concerning statistics.

2009-01-07

147

Social Perspectives on Mobility  

DEFF Research Database (Denmark)

Globalisation is heavily dependent on physical transport, as people and goods travel over longer distances and with higher frequency. Movement and mobility have become integrated parts of late modern identity and practice, and a state of flux can be sensed everywhere. Bringing together the latest interdisciplinary theoretical approaches with empirical case studies analysing and appraising innovative policies from Scandinavia, this volume demonstrates that mobility research is a key issue within social enquiry. It addresses three broad themes. Firstly, mobility as a constructed social reality, examining how individuals construct notions of mobility in their everyday life and practice. Secondly, mobility as spatial co-ordination and transgression, and finally, mobility as a policy theme, where the contributors explore recent developments in transport policy at national and European levels, suggesting ways forward for both research and policy. In the final section of the book new visions for research into sustainability and mobility are laid out.

Uth Thomsen, Thyra; Gudmundsson, Henrik

2005-01-01

148

Mobile Cloud Computing.  

Directory of Open Access Journals (Sweden)

Full Text Available Despite increasing usage of mobile computing, using its full potential is difficult due to its problems such as resource scarcity, frequent disconnections, and mobility. Mobile cloud computing can address these problems by executing mobile applications on resource providers external to the mobile device. Cloud computing is the latest effort in delivering computing resources as a service. It represents a shift away from computing as a product that is purchased, to computing as a service that is delivered to consumers over the internet from large-scale data centers – or “clouds”.In this paper, we provide an extensive survey of mobile cloud computing research, while highlighting the specific concerns in mobile cloud computing along with various issues to be considered and their solutions.

Miss Priyanka J.Pursani, Prof. P.L.Ramteke

2013-04-01

149

Mobile social phonebooks - Mobile phone user perceptions and practical implications for mobile operators  

Digital Repository Infrastructure Vision for European Research (DRIVER)

We introduce a term called mobile social phonebook, which refers to the integration of traditional mobile phone contacts with contacts from mobile Internet communication services that is happening in the mobile device’s phonebook. First, mobile phone user perceptions towards mobile social phonebooks are studied by means of semi-structured interviews. The results of the interviews are combined with related work and discussed from a mobile operator perspective. We claim that mobile social pho...

Karikoski, Juuso; Ma?kinen, Olli

2012-01-01

150

Connecting Mobile Users Through Mobile Social Networks  

Directory of Open Access Journals (Sweden)

Full Text Available Nowadays, social networks become popular with the emerging of web-based social networking services. Recently, several mobile services are developed to connect users to their favourite social networks such as Facebook, Twitter, Flickr, etc. However, these services depends upon the existing web-based social networks. In this paper, we present a mobile service for joining groups across communities. The originality of the work is that the framework of the service allows creating and joining social networks that are self-contained for mobile company servers. The service consists of several sub-services such as users invitation, group finding and others. Users, regardless of their disability, can use the service and its sub-services without the need to create their own accounts on social web sites and thus their own groups. We also propose a privacy control policy for mobile social networks.

Faisal Alkhateeb

2012-10-01

151

Sampling algorithms  

CERN Document Server

Important progresses in the methods of sampling have been achieved. This book draws up an inventory of methods that can be useful for selecting samples. Forty-six sampling methods are described in the framework of general theory. This book is suitable for experienced statisticians who are familiar with the theory of survey sampling.

Tillé, Yves

2006-01-01

152

Nonprobability Sampling  

Science.gov (United States)

This site, created by author William M.K. Trochim, describes numerous methods of nonprobability sampling, including accidental, haphazard or convenience sampling and many other types of purposive methods. Some of these purposive methods he describes are: modal instance, expert, quota, heterogeneity, and snowball sampling. Overall, this is a good, albeit brief, overview of the subject of nonprobability sampling.

Trochim, William M.

2008-12-12

153

CERN Mobility Survey  

CERN Multimedia

The Institute of Shipping and Transport of the University of the Aegean and the National Technical University of Athens are partners with CERN in a study of mobility patterns between and within the CERN sites and to that effect have realized a mobility survey dedicated to the CERN community.         The study aims to understand: How you presently get around the CERN sites; What problems you encounter regarding mobility; What your needs are; What improvements you’d like to see; What measures you would like to see implemented most. The replies we receive will enable us to define a general policy promoting the diversity of mobility at CERN and to establish and quantify the strategic actions to be implemented for both the short and medium term. The objectives of the transport mobility plans are to: Facilitate mobility within and between the CERN sites by identifying adequate solutions in response to individual ...

GS Department

2011-01-01

154

Mobility and school disruption  

Digital Repository Infrastructure Vision for European Research (DRIVER)

We consider the influence that mobile pupils have on the academic achievements of other pupils in English primary schools. We find that immobile pupils in year-groups (à la US “grades”) that experience high pupil entry rates progress less well academically between ages 8 and 11 than pupils in low-mobility year groups (grades), even within the same school. The disruptive externalities of mobility are statistically significant, but actually very small in terms of their educational impact. ...

Gibbons, Stephen; Telhaj, Shqiponja

2007-01-01

155

Mobile Trillium Engine  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Mobile trillium engine development, integration and deployment in clustered environment“The air transport industry has a constantly growing mobile workforce and a complex, dynamic workflow that requires workers to access and act on the real time information. Rapid mobilization and automation of the key workflow process will allow air transport industry to reduce business cost, better management and improved customer services.” [1]The aim of this thesis is to develop a backend system that ...

Ali, Muhammad Ahmed

2013-01-01

156

NEXT GENERATION MOBILE COMPUTING?  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Mobile Computing is human Computer interaction which a computer is expected to betransported during normal usage which includes Mobile communication, Hardware, Software. Many of thesesystems operate within degraded network, power, or computing environments, such as for first-responders ina catastrophe, mobile phone users in remote regions or in countries where communication infrastructure isdegraded. The emergence of inexpensive remote-controlled aircraft in the market place for hobbyists and...

Lakshmi Prasanna, N.; Krishnaiah?, Dr R. V.

2013-01-01

157

Mobile Immersive Music  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Due to obvious portability constraints, mobile technology excludes large electronic displays for visual immersion. On the contrary, sound heard over headphones is ideally suited for mobile applications. The use of stereo headphones or stereo speakers on mobile devices enables to take advantage of binaural technology which can provide an immersive sound experience for a variety of applications ranging from stereo widening of music (creating an out of the head listening experience) to full 3-D ...

Lemordant, Jacques; Guerraz, Agnes

2007-01-01

158

Mobile computing for radiology.  

Science.gov (United States)

The rapid advances in mobile computing technology have the potential to change the way radiology and medicine as a whole are practiced. Several mobile computing advances have not yet found application to the practice of radiology, while others have already been applied to radiology but are not in widespread clinical use. This review addresses several areas where radiology and medicine in general may benefit from adoption of the latest mobile computing technologies and speculates on potential future applications. PMID:24200475

Auffermann, William F; Chetlen, Alison L; Sharma, Arjun; Colucci, Andrew T; DeQuesada, Ivan M; Grajo, Joseph R; Kung, Justin W; Loehfelm, Thomas W; Sherry, Steven J

2013-12-01

159

Mobile instrumentation platform and robotic accessory for real-time screening of hazardous waste  

International Nuclear Information System (INIS)

An innovative mobile laboratory for real-time field screening of soils for inorganic hazardous waste using laser ablation-inductively coupled plasma-atomic emission spectrometry sampling and analysis technique is being developed at Ames Laboratory. This sampling technique as well as the concept for installing, monitoring, and controlling the instrumentation and utilities in the mobile laboratory, the robotic sampling accessory, and manual sampling method are discussed. Benefits of this mobile configuration and future development plans also are described

160

Best Sale Mobile Application  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The aim of this thesis was to find a best way to advertise short-term sales and reduce paper waste. Another aim was to help the seller to identify a potential customer for a specific product, by means of providing a number of people accessing an advertisement. A mobile phone is one of the widely used electronic devices by many people. Modern mobile phones support a good internet connection. Also, people carry their mobile devices with them even outside their homes. So a mobile application ...

Chittugnanamoorthy, Balakumar

2014-01-01

 
 
 
 
161

Guest Editorial ~ Mobile Learning  

Directory of Open Access Journals (Sweden)

Full Text Available This special IRRODL issue on mobile learning is timely because of the proliferation of mobile technology in society, globalization, and the need to re-examine how learning materials are designed and delivered for the new generation of learners. In today’s world, people are on the move and are demanding access to learning materials and information anytime and anywhere. At the same time, there is increasing use of mobile technology in different sectors of society to meet the needs of people on the move. In business, there is increasing use of mobile technologies for individuals to conduct their business anywhere and anytime. In healthcare, medical staff are using mobile technologies to access just-in-time information and to enter information in real time. People working in the field away from the central office use mobile technologies to access information and to communicate with other workers. Also, younger generations of learners are using mobile technologies for entertainment and socialization. These learners are using mobile devices to access information and multimedia materials and to communicate with friends. These new generations of learners do not see technology as something foreign. They readily accept technology and consider technology to be part of their lives. Moreover, the use of mobile technology is a 21st Century skill that students and workers must have to function in society.

Mohamed Ally

2007-06-01

162

Gideros mobile game development  

CERN Document Server

This book is a detailed guide to create and deploy mobile games on multiple mobile platforms with an emphasis on practical examples that help you learn how to make your own games quickly and efficiently.This book is for developers who are new to mobile game development or who have tried the native development of mobile games and want a simpler, faster tool that can support a wide variety of platforms and devices. Readers are expected to be at least partially familiar with the Lua game scripting language that Gideros uses for its scripts.

Sosins, Arturs

2013-01-01

163

Practical mobile forensics  

CERN Document Server

The book is an easy-to-follow guide with clear instructions on various mobile forensic techniques. The chapters and the topics within are structured for a smooth learning curve, which will swiftly empower you to master mobile forensics. If you are a budding forensic analyst, consultant, engineer, or a forensic professional wanting to expand your skillset, this is the book for you. The book will also be beneficial to those with an interest in mobile forensics or wanting to find data lost on mobile devices. It will be helpful to be familiar with forensics in general but no prior experience is re

Bommisetty, Satish; Mahalik, Heather

2014-01-01

164

Exploring the mobility of mobile phone users  

Science.gov (United States)

Mobile phone datasets allow for the analysis of human behavior on an unprecedented scale. The social network, temporal dynamics and mobile behavior of mobile phone users have often been analyzed independently from each other using mobile phone datasets. In this article, we explore the connections between various features of human behavior extracted from a large mobile phone dataset. Our observations are based on the analysis of communication data of 100,000 anonymized and randomly chosen individuals in a dataset of communications in Portugal. We show that clustering and principal component analysis allow for a significant dimension reduction with limited loss of information. The most important features are related to geographical location. In particular, we observe that most people spend most of their time at only a few locations. With the help of clustering methods, we then robustly identify home and office locations and compare the results with official census data. Finally, we analyze the geographic spread of users’ frequent locations and show that commuting distances can be reasonably well explained by a gravity model.

Csáji, Balázs Cs.; Browet, Arnaud; Traag, V. A.; Delvenne, Jean-Charles; Huens, Etienne; Van Dooren, Paul; Smoreda, Zbigniew; Blondel, Vincent D.

2013-03-01

165

The Microbial Colonisation of Mobile Phone Used by Healthcare Staffs  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Mobile phones are dispensable accessories in social life and normally they are not cleaned properly. Therefore, they serve as a reservoir of bacteria and may cause nosocomial infections in hospitals. The purpose of this study was to investigate microbiological colonization of mobile phones used by healthcare staffs. The study was carried out collecting swab samples with Cary-Blair transport medium from mobile phones of attending healthcare staffs from different departments of three hosp...

Kilic, I. H.; Ozaslan, M.; Karagoz, I. D.; Zer, Y.; Davutoglu, V.

2009-01-01

166

Sampling Distribution of Sample Means  

Science.gov (United States)

This applet generates a graph of the sampling distribution of sample means and displays the probabilities associated with that distribution. Users enter the mean and standard deviation of the source population and the size of the samples. The applet also calculates the standard error of the sample means.

Lowry, Richard

2009-01-08

167

Sampling Distributions  

Science.gov (United States)

This applet simulates and plots the sampling distribution of various statistics (i.e. mean, standard deviation, variance). The applet allows the user to specify the population distribution, sample size, and statistic. An animated sample from the population is shown and the statistic is plotted. This can be repeated to produce the sampling distribution of the statistic. After the sampling distribution is plotted it can be compared to a normal distribution by overlaying a normal curve. These features make it useful for introducing students in a first course to the idea of a sampling distribution. The site also includes instructions and exercises.

Lane, David M.

2009-11-26

168

Predictors of Social Mobilization Speed  

CERN Document Server

Mobilization across social networks is becoming increasingly influential, but little is known about what traits of individuals and their relationships affect their speed of mobilization between them. We ran a global social mobilization contest and recorded personal traits of the participants and those they mobilized. We examined how those traits influenced the speed of mobilization. Individuals mobilized faster when they heard about the contest directly from the contest organization, and decreased in speed when hearing from less personal source types (e.g. family vs. media). Mobilization was faster when the mobilizer and the mobilized heard about the contest through the same source type, and slower when both individuals were in different countries. Females mobilized other females faster than males mobilized other males. Mobilization was faster with young recruiters and old recruits, and slower with old recruiters and young recruits. These findings suggest ways to optimize the speed of social mobilization.

Alstott, Jeff; Velu, Chander

2013-01-01

169

Facial Expression Driven Mobile Learning System  

Directory of Open Access Journals (Sweden)

Full Text Available Processing human facial expressions is a computer vision challenge in a mobile technology environment. On the other hand, facial expression is an effective tool in behavioral studies on learning environment. Since, mobile technologies possess educating potential for today’s generation, the introduction of behavior as a consideration for mobile user opens up many opportunities for the design and development of a mobile learning system that can cater personalized learning. This undertaking was concerned with the enhancement of learners’ learning engagement and the enrichment of learners’ benefits. The mobile learning system approximates the learners’ facial expressions. The facial expressions will be used to identify the learning moods that will then be used to match the appropriate learning materials and activities of the learners. These steps are done to achieve optimal experience in learning. Approximation of learners’ facial expressions, learning moods, and matching of learning materials and activities to the learners are done through the use of intelligent computing techniques. In order for the stated endeavors to be achieved this undertaking considered three (3 stages of actions. Stage one focused on identifying the requirements needed to design, develop and assess the proposed facial expression driven mobile learning system. The second stage focused on the actual design and development of a prototype for the proposed facial expression driven mobile learning system and the third stage focused on the assessment of the prototype of the proposed facial expression driven mobile learning system. Assessment was done by pilot testing the mobile learning system prototype to a student sample from the researchers’ locality.

Jeffrey S. Ingosan

2014-02-01

170

Mobilizing community energy  

International Nuclear Information System (INIS)

What explains the galvanising of communities to participate actively in energy projects? How do groups mobilize to overcome the often formidable barriers highlighted in the existing literature? Drawing on original qualitative research of 100 community energy groups in Scotland, including six in-depth case studies, we explain how effective mobilization occurs and the political dynamics surrounding such mobilization. To capture these dynamics, we adapt theories offered by literature on social movements, with a particular focus on resource mobilization theories. Applying our adapted framework, we identify two particular sets of resources shaping community energy mobilization: (i) structural resources, which refer to the broad political context structuring and constraining opportunities for community energy mobilization; and (ii) symbolic resources—less tangible resources used to galvanise participants. We investigate to what extent our case study groups were able to draw upon and exploit these resources. We find that structural resources can either facilitate or hinder mobilization; what matters is how state resources are exploited and constraints mitigated. The use of symbolic resources was highly effective in aiding mobilization. Each of the groups examined – despite their considerable variation – effectively exploited symbolic resources such as shared identity or desire for strong, self reliant communities. - Highlights: ? Explains how/why community energy groups mobilize and the political dynamics surrounding it. ? Draws on original qualitative research of 100 community energy groups in Scotland. ? Identifies two particular sets of resources (structural and symbolic) and their importance. ? Explains how these resources shape community energy mobilization in Scotland. ? Provides an original application of resource mobilization theory to the field of energy studies.

171

Probability Sampling  

Science.gov (United States)

This site, created by author William M.K. Trochim, describes in detail five different types of random sampling. Some of these types include: simple random, stratified random, systematic random, cluster random, multi-stage sampling. The author provides examples, definitions, and the procedures behind the methods. Overall, this site provides a nice overview of probability sampling.

Trochim, William M.

2008-12-30

172

Mobile only users powered by fixed-mobile substitution  

Digital Repository Infrastructure Vision for European Research (DRIVER)

In a context of partial ?fixed-mobile substitution, we analyze ?fixed-mobile bundling and mobile-to-?fixed off-loading in a duopoly model in which consumers buy one or two products. A joint purchase discount mitigates ?fixed-mobile substitutability and consequently reduces mobile-only and fixed-only consumers. Practises like introducing a small discount, applied on a bundle of multiple service or mobile-to-?fixed off­loading by both operators are anal...

Liangy, Julienne; Petulowa, Marc

2012-01-01

173

Mobile phone; Mobiltelefon  

Energy Technology Data Exchange (ETDEWEB)

Almost the entire Norwegian population has cell phone. The usefulness of the cell phone is great, but can use a mobile phone to health or discomfort? How can exposure be reduced? NRPA follows research and provides advice on mobile phone use. (AG)

2009-07-01

174

Access to mobile services  

CERN Document Server

Focuses on methods for accessing broadcast based M-services from multiple wireless channels. This book presents a novel infrastructure that provides a multi-channel broadcast framework for mobile users to effectively discover and access composite M-services. It is suitable for those who work in the general area of mobile services.

Bouguettaya, Athman

2009-01-01

175

Energy and sustainable mobility  

International Nuclear Information System (INIS)

Given current needs in terms of mobility, people have turned toward a means of transportation that is both private and fast. As a consequence, cars now account for the majority of trips made in the world. The challenges raised by mobility are closely linked to energy issues via 3 main factors: the oil price, the environmental regulations and the new expectations of consumers

176

Understanding Mobile Apps  

Science.gov (United States)

... and access directly using your phone or another mobile device, like a tablet or music player. What do I need to download and use an app? You need a smart phone or another mobile device with internet access. Not all apps work ...

177

Mobility Balance Sheet 2010  

International Nuclear Information System (INIS)

The Mobility Balance Sheet 2010 provides an overview of the developments with regard to mobility in the Netherlands in the last decade. The overview also comprises the economic crisis and the consequences for traffic and transport in the Netherlands. Regarding the start of a new government also a medium-term outline is given for the next five years.

178

Mobile Applications for Extension  

Science.gov (United States)

Mobile computing devices (smart phones, tablets, etc.) are rapidly becoming the dominant means of communication worldwide and are increasingly being used for scientific investigation. This technology can further our Extension mission by increasing our power for data collection, information dissemination, and informed decision-making. Mobile

Drill, Sabrina L.

2012-01-01

179

Mobile-first Bootstrap  

CERN Document Server

A practical, step-by-step tutorial on developing websites for mobile using Bootstrap.This book is for anyone who wants to get acquainted with the new features available in Bootstrap 3 and who wants to develop websites with the mobile-first feature of Bootstrap. The reader should have a basic knowledge of Bootstrap as a frontend framework.

Magno, Alexandre

2013-01-01

180

ANALYSIS OF MOBILE AGENT  

Directory of Open Access Journals (Sweden)

Full Text Available Mobile agents are considered a very interesting technology to develop applications for mobile, pervasive, and distributed computing. Thus, they present a combination of unique features, such as their autonomy and capability to move to remote computers to process data there and save remote communications. Many mobile agent platforms have been developed since the late nineties. While some of them have been outdated, others continue releasing new versions that fix bugs detected or offer new interesting features. Moreover, other new platforms have appeared in the last few years. So, a common problem when one wants to benefit from mobile agent technology to develop distributed applications is the decision about which platform to use. In this research paper, we provide an up-to-date evaluation of existing Mobile Agent platforms.

Dr. Sushant B. Deshmukh

2011-12-01

 
 
 
 
181

Mobile Learning for All  

Directory of Open Access Journals (Sweden)

Full Text Available This paper presents research regarding the accessibility design for a mobile learning activity carried out at the Italian National Research Council, Institute for Educational Technologies. In particular, we introduce some considerations about the methodology and the design steps used to build some educational tools on mobile devices that are fully accessible for students with special needs using a compact screen reader (on a Smartphone. Briefly, we outline the common problems of accessing an online learning management system through a Smartphone (services and information, and then we introduce a mobile learning environment, the Accessible Mobile Learning (AMobiLe, which we have designed with specific features for visually impaired students. One of the main aims of our research is to explore and evaluate ways of using mobile devices to stimulate collaborative learning, as well as to demolish barriers for disabled students in order to reduce the digital divide.

Marco Arrigo

2010-04-01

182

Contextualizing mobile IT  

DEFF Research Database (Denmark)

Information and communication technologies are moving into the era of ubiquitous computing, with increased density of technology and increased mobility and continuity in use. From a design perspective, addressing the accommodation and coordination of multiple devices and services in situated use across different contexts is becoming increasingly important. In the COMIT project, ethnographic fieldwork has been combined with participatory design engaging users, designers and researchers in order to explore mobile IT use as well as the design of mobile IT concepts. Four seclected scenarios from the project are presented and discussed regarding implications for the design of mobile IT devices, with particular focus on (1) coping with multiple social contexts, and (2) the configuration and connectivity of mobile devices

Messeter, Jörn; Brandt, Eva

2004-01-01

183

Articulated body mobile robot  

International Nuclear Information System (INIS)

A mobile robot with brand new configuration, based on articulated body, is presented. The presented articulated body configuration can be considered as the basis of mobile robot, together with wheel, track and leg. The configuration is especially available for the mobile robot which have to move in narrow space and to carry heavy payload. The one third scale mechanical model KR-I, which consists of 6 segements, with 16 degrees of freedom 1391 mm in length and 27.8 kg in weight is made. Specific characteristics of high adaptability to the irregular terrain and comparatively high speed mobility is experimentally demonstrated by the KR-I. Finally a basic consideration of the control of the articulated body mobile robot is done. (author)

184

Family Mobility: An Examination of Factors Affecting Migration.  

Science.gov (United States)

The major purpose of this study was to examine one set of factors affecting family mobility, as well as to ascertain the circumstances influencing a choice of destination. Data employed were based upon the 1960 one-in-a-thousand sample Census. Family unit movement was distinguished from individual movement, as was mobility from migration. Major…

Kirschenbaum, Alan B.

185

Mobile Perspectives: On Teaching Mobile Literacy  

Science.gov (United States)

While recognizing that digital access is not evenly distributed in the United States, which is to say nothing of the global distribution, one can safely say that this transformation is already here; people are already at the moment in which the ability to use social media, and particularly social media as amplified through the power of the mobile

Parry, David

2011-01-01

186

Lunar Sample Quarantine & Sample Curation  

Science.gov (United States)

The main goal of this presentation is to discuss some of the responsibility of the lunar sample quarantine project. The responsibilities are: flying the mission safely, and on schedule, protect the Earth from biohazard, and preserve scientific integrity of samples.

Allton, Judith H.

2000-01-01

187

Soil Leachates and Contaminant Mobilization  

Science.gov (United States)

In the past 30 years, the earth's northern climate has warmed appreciably. Mounting evidence suggests that climate warming is being amplified at the earth's polar regions. A warmer northern climate could lead to the gradual loss of circumpolar permafrost. Northern soils are estimated to contain 25-33% of the world's soil carbon, much of which is frozen in permafrost as poorly decomposed plant remains. Continued warming of the earth's climate would lead to the thawing of permafrost and the mobilization of organic matter. Dissolved organic matter in water can sorb contaminants, and may serve to mobilize them in surface and ground water. Understanding the origin of organic matter in water is important to our understanding of its chemistry and capacity to sorb and mobilize contaminants. Soil cores were collected from the Caribou Poker Creek Research Watershed (CPCRW) in July 2002. The soil cores were subjected to a laboratory leaching procedure. Soil leachates were analyzed by pyrolysis-gas chromatograph and mass spectrometry (py-GC/MS). This "molecular fingerprinting" analysis was used to help determine similarities and differences in organic matter leached from different areas in the watershed. As expected, preliminary results indicated that those cores with similar vegetation were more strongly correlated (r>0.95) than those with dissimilar vegetation. Among the strongest correlated were the samples collected from areas containing spruce trees. However, the presence of aspen trees at a site caused the leachate to be statistically different, even if spruce trees were present. The results from this research will allow us to determine key differences in soil leachate composition. We seek to use this information to better understand the infiltration areas that produce organic matter with the greatest potential to mobilize contaminants.

Seelen, S.; White, D.; Yoshikawa, K.; Autier, V.

2003-12-01

188

What is mobile in entrepreneurship?  

Digital Repository Infrastructure Vision for European Research (DRIVER)

This report focuses on the relation between entrepreneurship and different aspects of mobility and provides a basis for further studies. To date the entrepreneurship field has focused little on the role of mobility and the studies that do, have predominantly focused on labour mobility. We argue that entrepreneurship and mobility are intertwined and that limiting the concept of mobility to labour mobility limits our view of the entrepreneurial process. The study is based on a literature review...

Lundmark, Erik; Waern, A?sa

2008-01-01

189

Embodied Cultures of Mobilities  

DEFF Research Database (Denmark)

The paper explores the relationship between the body and mobility by looking into a number of modes of transportation and their ways of constructing particular engagements with mobility. The ‘mobile embodiments’ are significant to a material and symbolic set of relations between human agents and material artifacts. The paper target the complex relationship between the moving, sensing body and the material and built environment of infrastructures and mobility modes in order to explore what norms, and meanings, and everyday life mobility cultures are being produced and re-produced in this process. A particular emphasis is put on how mobilities produce and re-produce norms, meanings and cultures in relation to the Everyday life perspective. By looking into walking, running, cycling, driving and mass transit mobilities different modes of embodied mobility is identified. The theoretical framework is based on a re-reading and re-interpretation of Gibson’s theories of visual perception and motion, Lynch’s theories of the mobile experiences of the city, and Goffman’s notions of ‘presentation of self’ and elaborations on ideas about interaction in motion. The new and innovative dimension to this paper is partly a new juxtaposition of three very different theorists that to the knowledge of this author never before has been combined. The theorists engaged with are all rather ‘old’ meaning that they are re-read in order to explore their underused potentials. However, this obviously also mean that more contemporary theorists understanding bodily movement, material sites of mobility, and social interactions must be consulted along the road (e.g. Latour’s work on objects and ANT, Thrift’s work on the body and ‘non-representational theory, and Massumi’s notions of affects and emotions related to bodily mobility). More importantly though, is the new insights that a theoretical framing connecting perception and bodily motion (Gibson) with an understanding of the face-to-face bodily interaction (Goffman) and an explicit awareness to the meaning of the physical design of the sites and places of the bodily mobility and interaction (Lynch). The argument is thus that understanding embodied cultures of mobilities from the vantage point of this paper lend is self to new interpretations, explorations and understandings of what it means to move within and between other social agents in particular material and physical environments.

Jensen, Ole B.

2010-01-01

190

Mobility Experiences of Adolescents with Cerebral Palsy  

Science.gov (United States)

The purpose of this study was to describe how youth with cerebral palsy experience mobility in their daily lives using a phenomenological approach. The participants were 10 youth with cerebral palsy, 17 to 20 years of age, selected using purposeful sampling with maximum variation strategies. A total of 14 interviews were completed. Transcripts…

Palisano, Robert J.; Shimmell, Lorie J.; Stewart, Debra; Lawless, John J.; Rosenbaum, Peter L.; Russell, Dianne J.

2009-01-01

191

Mobility of radiocesium in soils around Bratislava  

International Nuclear Information System (INIS)

For evaluation of contamination by radiocesium and their mobility on model territory according proposition of environmental geoinformation system (EGIS) the method based on sequential dissolution of soils artificially contaminated with radiocesium was developed. 76 samples of soil horizons from 16 probes were analyzed. Obtained results are discussed

192

Client Mobile Software Design Principles for Mobile Learning Systems  

Directory of Open Access Journals (Sweden)

Full Text Available In a client-server mobile learning system, client mobile software must run on the mobile phone to acquire, package, and send student’s interaction data via the mobile communications network to the connected mobile application server. The server will receive and process the client data in order to offer appropriate content and learning activities. To develop the mobile learning systems there are a number of very important issues that must be addressed. Mobile phones have scarce computing resources. They consist of heterogeneous devices and use various mobile operating systems, they have limitations with their user/device interaction capabilities, high data communications cost, and must provide for device mobility and portability. In this paper we propose five principles for designing Client mobile learning software. A location-based adaptive mobile learning system is presented as a proof of concept to demonstrate the applicability of these design principles.

Qing Tan

2009-01-01

193

Explaining mobile commerce services adoption by different type of customers  

Directory of Open Access Journals (Sweden)

Full Text Available Mobile phones have been proclaimed as the new service frontier. Nowadays, in addition to traditional mobile services, new mobile commerce services are ready to be used by customers based on 3G-related technologies. However, little is known about the reasons why different groups of customers adopt mobile commerce services. By means of a sample of 542 Dutch consumers, we analyze the acceptance of these services by four different groups of customers. We finish our work providing interesting conclusions for academics as well as practitioners

Francisco J. Molina-Castillo

2008-12-01

194

Soil sampling  

International Nuclear Information System (INIS)

This study attempts to survey the problems associated with techniques and strategies of soil sampling. Keeping in mind the well defined objectives of a sampling campaign, the aim was to highlight the most important aspect of representativeness of samples as a function of the available resources. Particular emphasis was given to the techniques and particularly to a description of the many types of samplers which are in use. The procedures and techniques employed during the investigations following the Seveso accident are described. (orig.)

195

33 CFR 165.835 - Security Zone; Port of Mobile, Mobile Ship Channel, Mobile, AL.  

Science.gov (United States)

...Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone; Port of Mobile, Mobile Ship Channel, Mobile, AL. 165.835 Section 165.835 Navigation and Navigable Waters COAST GUARD, DEPARTMENT...

2010-07-01

196

RESEARCH SAMPLING  

Directory of Open Access Journals (Sweden)

Full Text Available No aspect of the research plan is more critical for assuring the usefulness of a study than the sampling strategy. It will determine if the results of the study can be applied as evidence and contributes to the trustworthiness of the results. The sampling strategy is a critical part of research design. An appropriate sampling plan is vital for drawing the right conclusions from a study. Good sampling is critical for the confident application of the study findings to other people, settings, or time periods.

NISHA MD

2012-11-01

197

Mobile and contextual learning  

Directory of Open Access Journals (Sweden)

Full Text Available Is mobile learning just a part of everyday learning? This is a relevant question in an age when most people throughout the world now have access to mobile phones and mobility is increasingly taken for granted. In one sense, mobile learning is no different to carrying a textbook or learning through conversations at home, as part of formal education or in the workplace. The technology may be more engaging, but is the learning any different? Despite the ubiquity of mobile phones, smartphones, mp3 players and, increasingly, access to Wi-Fi connections and GPS navigation, the reasons for using mobile and wireless technologies in education are not yet widely known. There is significant specialist expertise, built from ten years of research (and more recently, reflective practice to demonstrate the unique characteristics of mobile learning, which include orchestrating shared learning with personal devices across formal and informal settings, providing immediately useful information, offering timely revision and reflection, connecting real and virtual locations, and enriching field trips and cultural visits. This knowledge needs to be disseminated and examined from new perspectives.

Agnes Kukulska-Hulme

2009-12-01

198

Cooperative Mobile Web Browsing  

Directory of Open Access Journals (Sweden)

Full Text Available This paper advocates a novel approach for mobile web browsing based on cooperation among wireless devices within close proximity operating in a cellular environment. In the actual state of the art, mobile phones can access the web using different cellular technologies. However, the supported data rates are not sufficient to cope with the ever increasing traffic requirements resulting from advanced and rich content services. Extending the state of the art, higher data rates can only be achieved by increasing complexity, cost, and energy consumption of mobile phones. In contrast to the linear extension of current technology, we propose a novel architecture where mobile phones are grouped together in clusters, using a short-range communication such as Bluetooth, sharing, and accumulating their cellular capacity. The accumulated data rate resulting from collaborative interactions over short-range links can then be used for cooperative mobile web browsing. By implementing the cooperative web browsing on commercial mobile phones, it will be shown that better performance is achieved in terms of increased data rate and therefore reduced access times, resulting in a significantly enhanced web browsing user experience on mobile phones.

G. P. Perrucci

2009-01-01

199

Mobile Sensing Systems  

Directory of Open Access Journals (Sweden)

Full Text Available Rich-sensor smart phones have made possible the recent birth of the mobile sensing research area as part of ubiquitous sensing which integrates other areas such as wireless sensor networks and web sensing. There are several types of mobile sensing: individual, participatory, opportunistic, crowd, social, etc. The object of sensing can be people-centered or environment-centered. The sensing domain can be home, urban, vehicular… Currently there are barriers that limit the social acceptance of mobile sensing systems. Examples of social barriers are privacy concerns, restrictive laws in some countries and the absence of economic incentives that might encourage people to participate in a sensing campaign. Several technical barriers are phone energy savings and the variety of sensors and software for their management. Some existing surveys partially tackle the topic of mobile sensing systems. Published papers theoretically or partially solve the above barriers. We complete the above surveys with new works, review the barriers of mobile sensing systems and propose some ideas for efficiently implementing sensing, fusion, learning, security, privacy and energy saving for any type of mobile sensing system, and propose several realistic research challenges. The main objective is to reduce the learning curve in mobile sensing systems where the complexity is very high.

Elsa Macias

2013-12-01

200

Mobile sensing systems.  

Science.gov (United States)

Rich-sensor smart phones have made possible the recent birth of the mobile sensing research area as part of ubiquitous sensing which integrates other areas such as wireless sensor networks and web sensing. There are several types of mobile sensing: individual, participatory, opportunistic, crowd, social, etc. The object of sensing can be people-centered or environment-centered. The sensing domain can be home, urban, vehicular… Currently there are barriers that limit the social acceptance of mobile sensing systems. Examples of social barriers are privacy concerns, restrictive laws in some countries and the absence of economic incentives that might encourage people to participate in a sensing campaign. Several technical barriers are phone energy savings and the variety of sensors and software for their management. Some existing surveys partially tackle the topic of mobile sensing systems. Published papers theoretically or partially solve the above barriers. We complete the above surveys with new works, review the barriers of mobile sensing systems and propose some ideas for efficiently implementing sensing, fusion, learning, security, privacy and energy saving for any type of mobile sensing system, and propose several realistic research challenges. The main objective is to reduce the learning curve in mobile sensing systems where the complexity is very high. PMID:24351637

Macias, Elsa; Suarez, Alvaro; Lloret, Jaime

2013-01-01

 
 
 
 
201

Mobile phone based SCADA for industrial automation.  

Science.gov (United States)

SCADA is the acronym for "Supervisory Control And Data Acquisition." SCADA systems are widely used in industry for supervisory control and data acquisition of industrial processes. Conventional SCADA systems use PC, notebook, thin client, and PDA as a client. In this paper, a Java-enabled mobile phone has been used as a client in a sample SCADA application in order to display and supervise the position of a sample prototype crane. The paper presents an actual implementation of the on-line controlling of the prototype crane via mobile phone. The wireless communication between the mobile phone and the SCADA server is performed by means of a base station via general packet radio service (GPRS) and wireless application protocol (WAP). Test results have indicated that the mobile phone based SCADA integration using the GPRS or WAP transfer scheme could enhance the performance of the crane in a day without causing an increase in the response times of SCADA functions. The operator can visualize and modify the plant parameters using his mobile phone, without reaching the site. In this way maintenance costs are reduced and productivity is increased. PMID:16480111

Ozdemir, Engin; Karacor, Mevlut

2006-01-01

202

Analysis of Mobile Users’ Perception towards SMS Voting  

Directory of Open Access Journals (Sweden)

Full Text Available Voting through Short Message Service (SMS technology is fast and reliable as the mobile technology in Malaysia is quite advanced. Most of the SMS voting mechanism is easily understood by the public. There is no need to explain the voting process in detail as almost 80% of the mobile users know how to use the SMS service. SMS voting is just another way of sending a vote to the recipient by using short code instead of using a normal mobile number. SMS voting provides a useful, secure and reliable process as mobile users are informed of the charges incurred and receive a return SMS to acknowledge that their SMS vote has been received. The objective of this study is to study the characteristics of SMS voting adopters in terms of demographic factors as well as to explore the mobile users’ perception towards SMS voting. A survey using questionnaires was conducted to gain information and opinions from a convenience sample of 300 Malaysian mobile users regarding their perceptions on using SMS to vote. The findings revealed that approximately two-thirds of the Malay respondents use SMS voting, most mobile users in the sample are single and female, and that mobile users like to send their votes using SMS. There is a significant difference between the usage of SMS voting among female respondents. Of the respondents 80 per cent perceive that the ease of use factor has greatly influenced mobile users in using SMS for voting purposes.

Ali Hussein Saleh Zolait

2008-12-01

203

MOBILE COMMERCE: A REVIEW  

Directory of Open Access Journals (Sweden)

Full Text Available As the power of wireless increases, it provides various opportunities for improving services to customers. In today s era, mobile commerce or M-Commerce has entered almost all the aspects of Business organizations like finance, retails, services, telecommunications and information technology services. This paper discusses the concept of Mobile Commerce. It looks at how the technology of Mobile Commerce has facilitated new business trends. After this there is detailed description of applications of M-Commerce, its advantages & disadvantages. In last finally it throws light on the challenges that are faced by M-Commerce.

Shruti Jain

2012-10-01

204

MOBILE COMMERCE: A REVIEW  

Directory of Open Access Journals (Sweden)

Full Text Available As the power of wireless increases, it provides various opportunities for improving services to customers. In today’s era, mobile commerce or M-Commerce has entered almost all the aspects of Business organizations like finance, retails, services, telecommunications and information technology services. This paper discusses the concept of Mobile Commerce. It looks at how the technology of Mobile Commerce has facilitated new business trends. After this there is detailed description of applications of M-Commerce, its advantages & disadvantages. In last finally it throws light on the challenges that are faced by M-Commerce.

Shruti Jain

2012-10-01

205

Guest Editorial ~ Mobile Learning  

Digital Repository Infrastructure Vision for European Research (DRIVER)

This special IRRODL issue on mobile learning is timely because of the proliferation of mobile technology in society, globalization, and the need to re-examine how learning materials are designed and delivered for the new generation of learners. In today’s world, people are on the move and are demanding access to learning materials and information anytime and anywhere. At the same time, there is increasing use of mobile technology in different sectors of society to meet the needs of people o...

Mohamed Ally

2007-01-01

206

Mobile radio channels  

CERN Document Server

Providing a comprehensive overview of the modelling, analysis and simulation of mobile radio channels, this book gives a detailed understanding of fundamental issues and examines state-of-the-art techniques in mobile radio channel modelling. It analyses several mobile fading channels, including terrestrial and satellite flat-fading channels, various types of wideband channels and advanced MIMO channels, providing a fundamental understanding of the issues currently being investigated in the field. Important classes of narrowband, wideband, and space-time wireless channels are explored in deta

Pätzold, Matthias

2011-01-01

207

Mobile networks architecture  

CERN Document Server

This book explains the evolutions of architecture for mobiles and summarizes the different technologies:- 2G: the GSM (Global System for Mobile) network, the GPRS (General Packet Radio Service) network and the EDGE (Enhanced Data for Global Evolution) evolution;- 3G: the UMTS (Universal Mobile Telecommunications System) network and the HSPA (High Speed Packet Access) evolutions:- HSDPA (High Speed Downlink Packet Access),- HSUPA (High Speed Uplink Packet Access),- HSPA+;- 4G: the EPS (Evolved Packet System) network.The telephone service and data transmission are the

Perez, Andre

2013-01-01

208

Mobile sociology. 2000.  

Science.gov (United States)

This article seeks to develop a manifesto for a sociology concerned with the diverse mobilities of peoples, objects, images, information, and wastes; and of the complex interdependencies between, and social consequences of, such diverse mobilities. A number of key concepts relevant for such a sociology are elaborated: 'gamekeeping', networks, fluids, scapes, flows, complexity and iteration. The article concludes by suggesting that a 'global civil society' might constitute the social base of a sociology of mobilities as we move into the twenty-first century. PMID:20092503

Urry, John

2010-01-01

209

Data mining mobile devices  

CERN Document Server

With today's consumers spending more time on their mobiles than on their PCs, new methods of empirical stochastic modeling have emerged that can provide marketers with detailed information about the products, content, and services their customers desire.Data Mining Mobile Devices defines the collection of machine-sensed environmental data pertaining to human social behavior. It explains how the integration of data mining and machine learning can enable the modeling of conversation context, proximity sensing, and geospatial location throughout large communities of mobile users

Mena, Jesus

2013-01-01

210

Windows Azure mobile services  

CERN Document Server

Get up and running with Windows Azure Mobile Services Windows Azure Mobile Services (WAMS) is a turn-key backend solution for applications, mobile or otherwise, to utilize structured storage in the cloud. It includes basic data access functionality and built-in authentication with Microsoft Account, Facebook, Twitter and Google, as well as push notification to the client app. This compact, to the point book gives you just what you need to get up and running with these tools. Demonstrates how to add, update, delete and retrieve data using standard .NET classes or REST-based requestsDescribes h

Johnson, Bruce

2013-01-01

211

Communication satellite studies applicable to mobile telephone services  

Science.gov (United States)

The potential use of satellites as extensions of existing terrestrial land mobile systems is discussed. Compatibility, particularly with cellular type systems, is considered. Sample technical and cost parameters and market assessments are also presented.

Anderson, R. E.; Milton, R. T.; Brown, J. P.

1979-01-01

212

Mobile Phone as Pedagogical Tools: Are Teachers Ready?  

Directory of Open Access Journals (Sweden)

Full Text Available This study examined the teachers’ perceptions on the implementation of mobile learning via mobile phone at schools. The sample for this study comprised thirty eight teachers who were teaching Information Technology (IT subjects from various primary schools in Penang, Malaysia. A quantitative survey was administered to the respondents whereby results indicated that the adoption of mobile learning via mobile phone at schools was not perceived well among respondents. Moreover, respondents also were quite skeptical about future of mobile learning should it be implemented at their schools. The article concludes with emerging concerns which may have implications for future studies, specifically on whether or not mobile phone can effectively be adopted as teaching and learning tools for Malaysian mainstream schooling.

Issham Ismail

2013-01-01

213

Sampling Development  

Science.gov (United States)

Research in developmental psychology requires sampling at different time points. Accurate depictions of developmental change provide a foundation for further empirical studies and theories about developmental mechanisms. However, overreliance on widely spaced sampling intervals in cross-sectional and longitudinal designs threatens the validity of…

Adolph, Karen E.; Robinson, Scott R.

2011-01-01

214

Sampling Bias  

Science.gov (United States)

Students will complete this activity in conjunction with an introductory statistics lesson about the importance of samples. Students will use the Oregon Reference Map and use the data to find basic statistics about samples with the help of spreadsheet software. This resource includes both a teaching guide and student lesson.

Longo, L.

2011-09-16

215

Mobile IPTV: Implications for Education  

Directory of Open Access Journals (Sweden)

Full Text Available Mobile IPTV (Internet Protocol Television provides digital content which users watch as a television broadcast via the Internet on a mobile device. This paper presents the development of IPTV, Suan Dusit Internet Broadcasting, (SDIB to mobile IPTV and discusses the implications for education. Mobile IPTV was developed as a prototype and designed to support users via wireless and mobile networks regardless of the mobile device. The system can be broadcasted through both live and video on demand (VOD utilizing a mobile browser (smart phones, smart TVs, and tablets and web browsers (Windows, Mac, and UNIX. The mobile IPTV prototype has been used and evaluated in this study. The results of student’s behavior when using mobile phones in their learning found that the highest mobile use was for Facebook and Line to communicate and share information with their classmates. The results of student’s attitudes towards using mobile phones in their learning found that the highest mobile use was for sharing information with classmates, sharing learning experiences on social networks, and using mobile phones to support their studies. The result of the IPTV and mobile IPTV system evaluation found that overall mobile IPTV had a higher user satisfaction than IPTV. Furthermore, mobile IPTV creates a good learning experience for the users. This paper provides guidelines in technical issues for helping educational institutions to develop mobile IPTV for education.

Pannee Suanpang

2013-10-01

216

Environmental sampling  

International Nuclear Information System (INIS)

Environmental Sampling (ES) is a technology option that can have application in transparency in nuclear nonproliferation. The basic process is to take a sample from the environment, e.g., soil, water, vegetation, or dust and debris from a surface, and through very careful sample preparation and analysis, determine the types, elemental concentration, and isotopic composition of actinides in the sample. The sample is prepared and the analysis performed in a clean chemistry laboratory (CCL). This ES capability is part of the IAEA Strengthened Safeguards System. Such a Laboratory is planned to be built by JAERI at Tokai and will give Japan an intrinsic ES capability. This paper presents options for the use of ES as a transparency measure for nuclear nonproliferation

217

Ion mobility analysis of lipoproteins  

Science.gov (United States)

A medical diagnostic method and instrumentation system for analyzing noncovalently bonded agglomerated biological particles is described. The method and system comprises: a method of preparation for the biological particles; an electrospray generator; an alpha particle radiation source; a differential mobility analyzer; a particle counter; and data acquisition and analysis means. The medical device is useful for the assessment of human diseases, such as cardiac disease risk and hyperlipidemia, by rapid quantitative analysis of lipoprotein fraction densities. Initially, purification procedures are described to reduce an initial blood sample to an analytical input to the instrument. The measured sizes from the analytical sample are correlated with densities, resulting in a spectrum of lipoprotein densities. The lipoprotein density distribution can then be used to characterize cardiac and other lipid-related health risks.

Benner, W. Henry (Danville, CA); Krauss, Ronald M. (Berkeley, CA); Blanche, Patricia J. (Berkeley, CA)

2007-08-21

218

Low-Cost Mobile Phone Microscopy with a Reversed Mobile Phone Camera Lens  

Science.gov (United States)

The increasing capabilities and ubiquity of mobile phones and their associated digital cameras offer the possibility of extending low-cost, portable diagnostic microscopy to underserved and low-resource areas. However, mobile phone microscopes created by adding magnifying optics to the phone's camera module have been unable to make use of the full image sensor due to the specialized design of the embedded camera lens, exacerbating the tradeoff between resolution and field of view inherent to optical systems. This tradeoff is acutely felt for diagnostic applications, where the speed and cost of image-based diagnosis is related to the area of the sample that can be viewed at sufficient resolution. Here we present a simple and low-cost approach to mobile phone microscopy that uses a reversed mobile phone camera lens added to an intact mobile phone to enable high quality imaging over a significantly larger field of view than standard microscopy. We demonstrate use of the reversed lens mobile phone microscope to identify red and white blood cells in blood smears and soil-transmitted helminth eggs in stool samples. PMID:24854188

Fletcher, Daniel A.

2014-01-01

219

Technologies for Learning? An Actor-Network Theory Critique of "Affordances" in Research on Mobile Learning  

Science.gov (United States)

How is the link between learner and technology made in mobile learning? What is the value of the concept of "affordances"? And how does research articulating this concept act to position mobile devices as "technologies for learning"? This literature review used both unstructured and structured search samples of published research on mobile

Wright, Steve; Parchoma, Gale

2011-01-01

220

Economic Mobility Project  

Science.gov (United States)

Working with partners from The American Enterprise Institute and The Urban Institute, the Economic Mobility Project is an initiative of The Pew Charitable Trusts. The aim of the Project is to focus public attention on economic mobility through well-thought out scholarly analyses, reports, public events, and discussion. In the "Reports & Research" section, visitors can download papers like "Neighborhoods and the Black-White Mobility Gap" and "Ups and Downs: Does the American Economy Still Promote Upward Mobility?" Visitors can also look over a topical list of their papers as well. Moving on, the "Newsroom" area provides access to the Project's latest press releases and information about their upcoming events. The site is rounded out by a search engine and an area where visitors can sign up to receive the latest news from the Project.

 
 
 
 
221

jQuery Mobile  

CERN Document Server

Native apps have distinct advantages, but the future belongs to mobile web apps that function on a broad range of smartphones and tablets. Get started with jQuery Mobile, the touch-optimized framework for creating apps that look and behave consistently across many devices. This concise book provides HTML5, CSS3, and JavaScript code examples, screen shots, and step-by-step guidance to help you build a complete working app with jQuery Mobile. If you're already familiar with the jQuery JavaScript library, you can use your existing skills to build cross-platform mobile web apps right now. This b

Reid, Jon

2011-01-01

222

AUSSAT mobile satellite services  

Science.gov (United States)

An overview of AUSSAT's planned mobile satellite system is given. The development program which is being undertaken to achieve the 1992 service date is described. Both business and technical aspects of the development program are addressed.

Nowland, Wayne L.; Wagg, Michael; Simpson, Daniel

1988-01-01

223

Mobile School Service  

Directory of Open Access Journals (Sweden)

Full Text Available What is in common for the majority of young people? Mobile phone. In epoch of rapid development of information technologies the time came in which only few people do not have mobiles, especially among young people in high schools. Researches which we made in our school say that this percentage (rate is really high 99,23% at this moment. The educational institutions should use this opportunity. In aim to improve the success of students the mobile service is developed, which will be described in this work. This is first result which provides a cognitive tool which is supporting the independent learning by applying mobile phones with wireless communication technology to extend learning outside of the classroom in Serbia. The service was developed during times when we didn’t know anything about how much and in which way m-learning was being used in the world.

Borislav Odadzic

2010-04-01

224

EcoMOBILE  

Science.gov (United States)

If you're not scared off by the acronym, the Ecosystems Mobile Outdoor Blended Immersive Learning Environment (EcoMOBILE) is a fabulous learning device. Developed at the Harvard Graduate School of Education with funding from the Institute of Education Sciences, EcoMOBILE is a fairly remarkable initiative that allows students to explore a virtual pond and extend their learning through one or more field trips to a local pond environment. Students can access and collect information and clues about the virtual environment via a mobile device. Then, students can extend their learning to the real world by using environmental probes that allow collection of real-time data. On the site, visitors can learn about the application via a short video, project data, and information about the primary investigators.

225

Sencha Touch Mobile JavaScript Framework  

CERN Document Server

This book is a step-by-step tutorial aimed at beginners to Sencha Touch. There is ready sample code explained with essential screenshots for better and quicker understanding. This book is ideal for anyone who wants to gain the practical knowledge involved in using Sencha Touch mobile web application framework to make attractive web apps for mobiles. If you have some familiarity with HTML and CSS, then this book is for you. This book will give designers the skills they need to implement their ideas, and provides developers with creative inspiration through practical examples. It is assumed that

Rao, SSVV Narasimha

2012-01-01

226

Towards mobile collaborative exergaming  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Today’s high calorie diets and low physical activity levels contributes towards childhood obesity. Exergaming, a combination of ”exercise” and ”gaming” was conceived as a means of addressing this problem. In this paper a mobile collaborative exergame, which is designed to be enjoyable and physically challenging, is presented. The long term objective is to harness conventional mobile computing technologies to deliver a platform for games that are adaptive to the exercise req...

Gorgu, Levent; O Hare, G. M. P.; O Grady, Michael J.

2009-01-01

227

MOBILE SOFTWARE TRAINING ?????????? ?????? ?????????? ????????  

Directory of Open Access Journals (Sweden)

Full Text Available Relevance of the material contained in the article, due to the necessity in shuku ways of optimizing the process of training in high school, which becomes possible through the use of mobile information and communication technologies. The work-rod lyanuto modern software mobile information and communication technologies and learning tools that enable students to provide ongoing access to resources, teach-ence school.???????????? ?????????, ??????????? ? ??????, ???????????? ???????????? ?????? ?????? ??????????? ??????? ???????? ? ????? ?????, ?? ???? ???????? ??????? ???????????? ????????? ????????????-?????????????? ??????????. ? ?????? ?????????? ??????? ????????? ???????? ????????????-????????????? ?????????? ? ?????? ????????, ?? ??????? ?????????? ??????????? ????????? ????????? ?????? ?? ?????????? ???????? ??????????? ???????.

Nataliya V. Rashevs’ka

2011-03-01

228

Mobile Sensing Systems  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Rich-sensor smart phones have made possible the recent birth of the mobile sensing research area as part of ubiquitous sensing which integrates other areas such as wireless sensor networks and web sensing. There are several types of mobile sensing: individual, participatory, opportunistic, crowd, social, etc. The object of sensing can be people-centered or environment-centered. The sensing domain can be home, urban, vehicular… Currently there are barriers that limit the social acceptance...

Elsa Macias; Alvaro Suarez; Jaime Lloret

2013-01-01

229

Network Handle by mobile  

Directory of Open Access Journals (Sweden)

Full Text Available Now a days Administrator has to present to at his organization if he want to put control on the existing system. He has go to individual client to keep an eye, But practically its not possible for any Administrator, now we are providing a facility to user put controller on whole system using his mobile whether he is present in the office or not he will get the all the information on his mobile in form of sms

Nitin D. Shelokar

2011-06-01

230

Implementing Strong Code Mobility  

Directory of Open Access Journals (Sweden)

Full Text Available This study presents the idea of implementing strong code mobility in terms of platform independence, microprocessor architecture reliance and resource management. Proposed system establishes a shared connection with the resources and its surrounding environment based on distributed structured XML-based knowledge. The resources managed by the process are shared between the nodes, so that the developer can program in a centralized setting. The goal is to present a solution for strong code mobility for commonly used platforms.

Muhammad Kamran Naseem

2004-01-01

231

Implementing Strong Code Mobility  

Digital Repository Infrastructure Vision for European Research (DRIVER)

This study presents the idea of implementing strong code mobility in terms of platform independence, microprocessor architecture reliance and resource management. Proposed system establishes a shared connection with the resources and its surrounding environment based on distributed structured XML-based knowledge. The resources managed by the process are shared between the nodes, so that the developer can program in a centralized setting. The goal is to present a solution for strong code mobil...

Muhammad Kamran Naseem; Sohail Iqbal; Khalid Rashid

2004-01-01

232

Storms in Mobile Networks  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Mobile networks are vulnerable to signalling attacks and storms that are caused by traffic patterns that overload the control plane, and differ from distributed denial of service (DDoS) attacks in the Internet since they directly attack the control plane, and also reserve wireless bandwidth without actually using it. Such attacks can result from malware and mobile botnets, as well as from poorly designed applications, and can cause service outages in 3G and 4G networks which...

Gorbil, Gokce; Abdelrahman, Omer H.; Pavloski, Mihajlo; Gelenbe, Erol

2014-01-01

233

The mobile devices and its mobile learning usage analysis  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The usage of mobile devices for mobile learning is becoming increasingly popular. There is a new brand of students in the universities now-a-days who are easily connected to technology and innovative mobile devices. We attempt to do an analysis on a survey done with university students on mobile device usage for mobile learning purposes. This is to find the learning trends within the student community so that some of these popular practices could be encouraged to enhance lea...

Jacob, S. M.; Issac, B.

2014-01-01

234

Mobile telephony and children  

International Nuclear Information System (INIS)

There is an ongoing debate about the possibility of adverse health effects related to radiofrequency (RF) radiation exposure from mobile phones and their associated base stations. Of particular public concern in this context are children. In its report the Independent Expert Group on Mobile Phones (IEGMP) recommended that the widespread use of mobile phones by children should be discouraged citing that children may be more vulnerable because of their developing nervous system, their greater absorption of energy in the tissue of the head and a longer lifetime of exposure. However, more recently the Health Council of the Netherlands disagreed with the IEGMP and concluded that there is no convincing scientific data to restrict children from using mobile phones. The World Health Organization states that none of there centre views have found that exposure to the RF fields form mobile phones or their base stations causes any adverse health consequence. However there has been limited scientific research specifically focussed on children. Future research will be required to address the issue of mobile telephony and children. Copyright (2004) Australasian Radiation Protection Society Inc

235

Mobility decline in old age  

DEFF Research Database (Denmark)

Mobility is important for community independence. With increasing age, underlying pathologies, genetic vulnerabilities, physiological and sensory impairments, and environmental barriers increase the risk for mobility decline. Understanding how mobility declines is paramount to finding ways to promote mobility in old age.

Rantakokko, Merja; Mänty, Minna Regina

2013-01-01

236

Libraries and the Mobile Web  

Science.gov (United States)

In 2011, cell phones and mobile devices are ubiquitous. The vast majority of Americans now own cell phones, and over half of them have mobile access to the Internet through a phone or other mobile device. For libraries to stay relevant, they must be able to offer content and services through the mobile web. In this issue of "Library Technology…

Hanson, Cody

2011-01-01

237

Coal Sampling  

Science.gov (United States)

This USGS publication explains the use of fluxes for preparation of coal for elemental analysis. The material would be useful to supplement textbooks concerning sample preparation and may be helpful in designing an XRF laboratory experiment.

Golightly, D. W.; Simon, Frederick Otto, 1939-

2011-03-29

238

Mobile Web – Enterprise Application Advantages  

Digital Repository Infrastructure Vision for European Research (DRIVER)

This paper enlightens the benefits offered by enabling web applications on Mobile devices and also addresses the current business challenges in developing Mobile Web applications. This paper is intended for all business domains irrespective of application portfolios. Mobile enterprise application platform solutions are the core technology offerings that enable mobile enterprise applications and are the basis for organizations that are building, deploying, and supporting mobile enterprise appl...

Sanjeev Narayan Bal?

2013-01-01

239

Mobile concrete factory profiability analysis  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Diploma task deals with the preparation of concrete in the mobile and stationary concrete factory, transport of concrete and the comparison between the cost of preparation of concrete in the mobile and stationary concrete factory. Represented is the way of preparation of concrete in the mobile and stationary concrete factory. I conducted an analysis of the viability of mobile concrete factory, based on a comparison of the cost of preparation of concrete in the mobile and the cost of preparing...

Bajz?elj, Grega

2009-01-01

240

Alexithymia, human relationships, and mobile phone use.  

Science.gov (United States)

Alexithymia is a personality trait associated with difficulties in identifying feelings, difficulties in describing feelings to other people, constricted imaginal processes, and an externally oriented cognitive style. It has been found to be associated with personality features that may cause interpersonally avoidant behavior and other interpersonal problems. The present study explored, in a sample of primary care patients (N = 491), whether alexithymia is associated with mobile phone usage, and whether the perceived quality and quantity of human relationships mediate its effect. Even controlling for sociodemographic variables and symptoms of depression, mania and psychoses, alexithymia, measured by the 20-Item Toronto Alexithymia Scale, was associated with less frequent mobile phone use. Not having enough relationships or a close friend, and relationships being less satisfactory mediated the effect of alexithymia on less frequent mobile phone use. The results support the findings of earlier studies that have linked interpersonal problems with alexithymia. PMID:20921862

Mattila, Aino K; Luutonen, Sinikka; Ylinen, Mikko; Salokangas, Raimo K R; Joukamaa, Matti

2010-10-01

 
 
 
 
241

Towards a Statistical Physics of Human Mobility  

CERN Document Server

In this paper, we extend some ideas of statistical physics to describe the properties of human mobility. From a physical point of view, we consider the statistical empirical laws of private cars mobility, taking advantage of a GPS database which contains a sampling of the individual trajectories of 2% of the whole vehicle population in an Italian region. Our aim is to discover possible "universal laws" that can be related to the dynamical cognitive features of individuals. Analyzing the empirical trip length distribution we study if the travel time can be used as universal cost function in a mesoscopic model of mobility. We discuss the implications of the elapsed times distribution between successive trips that shows an underlying Benford's law, and we study the rank distribution of the average visitation frequency to understand how people organize their daily agenda. We also propose simple stochastic models to suggest possible explanations of the empirical observations and we compare our results with analogo...

Gallotti, Riccardo; Rambaldi, Sandro

2012-01-01

242

MOBILIZING KNOWLEDGE IN DENMARK  

DEFF Research Database (Denmark)

Knowledge mobilization is not only a new expression in a Danish context. It is also an interesting concept to introduce and discuss. For doesn’t knowledge mobilization have more – or, at least, as much – to do with politics as with education research or education in itself? Doesn’t modern knowledge mobilization have to do with a new political will to mobilize the population by creating a connection between education research and education? On the basis of this report on the Danish efforts with respect to ’knowledge mobilization’, these questions can be answered affirmatively; the extent of knowledge mobilization in relation to education research depends on the political will for it. To what extent is it present in Denmark? On one hand, it is whole-heartedly present in Denmark, where national competitive ability is formulated from an ideal of the population’s competitive ability – a sort of popular competition state – that is to be realized by fulfilling the ambitions for comprehensive knowledge mobilization through education.1 On the other hand, Denmark is having a hard time finding a broad consensus when what is, in principle, supposed to be a common political will is to be translated into knowledge mobilization. This lack of consensus can be traced to the political-administrative level and to the relationship between representatives of education research and representatives of the education system. So, if the concept of knowledge mobilization is not especially exploited in Denmark, it can be seen as a symptom that the will to knowledge mobilization is, in reality – and until now – notstrong enough to deserve the use of the expression mobilization. The other possibility is that what is conceptualized as mobilization in other countries is conceptualized in Denmark by the use of concepts such as transfer of, communication, and knowledge sharing. At any rate, the analysis in this report of the relationship between education research and the education system during the period from 2000 to today shows that a change has, in fact, taken place; a change from speaking less about transfer ofknowledge transfer to speaking more about the need for research communication, knowledge exchange, and knowledge sharing. I have chosen to use the concept of knowledge mobilization in this report to summarize these changes.The report accounts for knowledge mobilization through two analyses. First, an analysis of the question of research affiliation of Danish universities with the Centers for Higher Education (CVUs)/university colleges during the period from 2000 to 2010. Second, an analysis and assessment of how the use of journalism as a form of communication has been idealized – in the period from the year 2003 on – with respect to creating an equal communication between universities and society, including between education research, the education system, and educational practice.

Holm, Claus

2011-01-01

243

Mobile Apps and Romanian Mobile Devices Users’ Preferences  

Directory of Open Access Journals (Sweden)

Full Text Available During the last years the development of mobile technologies generated the formation of a new segment of software industry dedicated to applications for mobile devices. At their turn, mobile apps created new tendencies in software development but also generated important revenues at the level of the specialized industry as well as at global level. From this perspective, the present article, on one hand, describes an image of the mobile infrastructure, mobile applications and their users, on the other hand, includes a study regarding Romanian users of mobile devices in order to identify the types of applications usually employed in mobile activities, the time dedicated to these activities, the number of downloaded applications and their cost levels. We consider that the results of this study may be useful to mobile app users and developers, and mobile device providers.

Mihaela Filofteia TUTUNEA

2014-10-01

244

Virtual Mobility to Improve Cooperation in Mobile Ad hoc Networks  

Directory of Open Access Journals (Sweden)

Full Text Available We study the impact of mobility on the level of cooperation between mobile nodes in a mobile ad hoc network. In a mobile ad hoc network, if the nodes are static or have a reduced mobility and if some nodes adopt a selfish behaviour, the performance of the network is affected. This is because the same nodes that are relaying the packets. On the other hand, nodes with a significant mobility affect the network topology, hence the traffic often changes routes and the probability that nodes that are not selfish relay packets is better. We exploit the advantage that the mobility provides on cooperation to propose a solution with mechanisms that generate virtual mobility in a static network or with a reduced mobility, so it seems like a dynamic network.

A. Baaziz

2008-01-01

245

5G Mobile Technology  

Directory of Open Access Journals (Sweden)

Full Text Available 5G Technology stands for fifth Generation Mobile technology. From generation 1G to 2.5G and from 3G to 5G this world of telecommunication has seen a number of improvements along with improved performance with every passing day. This fast revolution in mobile computing changes our day to day life that is way we work, interact, learn etc. This paper also focuses on all preceding generations of mobile communication along with fifth generation technology. Fifth generation network provide affordable broadband wireless connectivity (very high speed. The paper throws light on network architecture of fifth generation technology. Currently 5G term is not officially used. In fifth generation researches are being made on development of World Wide Wireless Web (WWWW, Dynamic Adhoc Wireless Networks (DAWN and Real Wireless World. Fifth generation focus on (Voice Over IP VOIP-enabled devices that user will experience a high level of call volume and data transmission. Fifth generation technology will fulfill all the requirements of customers who always want advanced features in cellular phones. The main features in 5G mobile network is that user can simultaneously connect to the multiple wireless technologies and can switch between them. This forthcoming mobile technology will support IPv6 and flat IP. Fifth generation technology will offer the services like Documentation, supporting electronic transactions (e-Payments, e-transactions etc.

Ms. Reshma S. Sapakal , Ms. Sonali S. Kadam

2013-02-01

246

[Mobility and balance].  

Science.gov (United States)

Quality of life is strongly associated with the mobility of elderly people. Falls often cause restricted mobility, a decline in activities of daily living and an increased risk of institutionalisation. Frailty, commonly associated with aging, is a biologic syndrome of decreased resistance to stressors, resulting from declines across multiple physiological systems. Changes in mobility and gait constitute part of the frailty syndrome. Since more than one third of persons over the age of 65 fall each year, prevention of falls is very important. Already while taking the patients' history special emphasis should be laid on matters associated with an increased risk of falling, such as the use of more than four medications. To assess mobility several brief tests exist (i.e. Timed up & go [17], Walking while Talking [20]) which immediately yield information regarding mobility and falling risk. Patients with poor performance on such tests or those with a history of several falls should undergo a spatio-temporal gait analysis in order to determine a possible cause as well as suitable interventions. Additionally, the objective measurement of temporo-spatial gait parameters under dual task conditions may detect deficits in cognitive function. Several interventions have been shown to have favourable effects on gait stability and the occurrence of falls. Proprioceptive problems can be partially compensated for by wearing special shoes. Also, different movement exercises such as Tai Chi Chuan, Jaques-Dalcroze eurhythmics and social dancing are associated with better balance and gait safety, and a reduction of falls. PMID:18677690

Schmitt, Katrin; Kressig, Reto W

2008-08-01

247

Overbooking in Mobile Backhaul  

Directory of Open Access Journals (Sweden)

Full Text Available The rapid increase of mobile data subscribers and deployment of broadband radio access networks pushmobile operators to upgrade their mobile backhaul from expensive legacy TDM transport to carrierEthernet for cheaper operational expenditures. The Metro Ethernet Forum has defined a set of EthernetVirtual Connection services that are adopted to provide scalable Ethernet transport for mobile backhaul.However, these services usually address single cell site backhaul per UNI handoff, neither consideringstatistical multiplexing gain at a hub site which aggregates backhaul traffics of multiple cell sites, norsupporting Quality-of-Service provisioning in overbooked backhaul pipe. This paper proposed an efficientcarrier Ethernet overbooking solution for mobile backhaul. A statistical estimation method has beendeveloped for deriving a safe overbooking factor at a given UNI. Then two efficient transport architectureswere proposed to support bandwidth sharing in cellular cluster with overbooked backhaul bandwidth incarrier Ethernet. A novel bandwidth control algorithm has been derived at customer edge device to provideQuality-of-Service for multimedia traffics over overbooked UNI, with SLA policing and protection on highpriority services. Experimental data analysis and simulations have showed that our new schemes canbenefit mobile operators in resource utilization efficiency, carrier Ethernet cost saving and backhaulperformance.

Chunming Liu

2013-08-01

248

Autonomous mobile communication relays  

Science.gov (United States)

Maintaining a solid radio communication link between a mobile robot entering a building and an external base station is a well-recognized problem. Modern digital radios, while affording high bandwidth and Internet-protocol-based automatic routing capabilities, tend to operate on line-of-sight links. The communication link degrades quickly as a robot penetrates deeper into the interior of a building. This project investigates the use of mobile autonomous communication relay nodes to extend the effective range of a mobile robot exploring a complex interior environment. Each relay node is a small mobile slave robot equipped with sonar, ladar, and 802.11b radio repeater. For demonstration purposes, four Pioneer 2-DX robots are used as autonomous mobile relays, with SSC-San Diego's ROBART III acting as the lead robot. The relay robots follow the lead robot into a building and are automatically deployed at various locations to maintain a networked communication link back to the remote operator. With their on-board external sensors, they also act as rearguards to secure areas already explored by the lead robot. As the lead robot advances and RF shortcuts are detected, relay nodes that become unnecessary will be reclaimed and reused, all transparent to the operator. This project takes advantage of recent research results from several DARPA-funded tasks at various institutions in the areas of robotic simulation, ad hoc wireless networking, route planning, and navigation. This paper describes the progress of the first six months of the project.

Nguyen, Hoa G.; Everett, Hobart R.; Manouk, Narek; Verma, Ambrish

2002-07-01

249

Mobile Communication Evolution  

Directory of Open Access Journals (Sweden)

Full Text Available Presently, there is a wide establishment of mobile computing across the globe and the number of subscribers worldwide including Nigeria is on the increase every day. It started with mobile voice communication and has gradually been extended to the capability of sending and receiving data across the cellular networks. Also, the coming of this technology has changed the face of business all over the world and will soon dominate all strata of the society. Therefore, this paper is looking at the past, present and the future of this technology, the areas of applications and vectors of mobility that are likely to shape the future of the technology. The reviews of the mobile computing technology from the First generation (1G to fourth (4G are presented. The relationships of the generations were presented. The issues relating to the emergence of new technology are also reviewed. The interworking of the technologies and how they helped in promoting the mobile technologies were also reviewed. The deployments issues from First generation (1G to 3G and later to 4G are presented. The paper has reviewed how each of the technology came to being and thus served as an eye opener to those people that are not acquainted with these technologies.

Kuboye Bamidele Moses

2014-01-01

250

Mobile propeller dynamometer validation  

Science.gov (United States)

With growing interest in UAVs and OSU's interest in propeller performance and manufacturing, evaluating UAV propeller and propulsion system performance has become essential. In attempts to evaluate these propellers a mobile propeller dynamometer has been designed, built, and tested. The mobile dyno has been designed to be cost effective through the ability to load it into the back of a test vehicle to create simulated forward flight characteristics. This allows much larger propellers to be dynamically tested without the use of large and expensive wind tunnels. While evaluating the accuracy of the dyno, several improvements had to be made to get accurate results. The decisions made to design and improve the mobile propeller dyno will be discussed along with attempts to validate the dyno by comparing its results against known sources. Another large part of assuring the accuracy of the mobile dyno is determining if the test vehicle will influence the flow going into the propellers being tested. The flow into the propeller needs to be as smooth and uniform as possible. This is determined by characterizing the boundary layer and accelerated flow over the vehicle. This evaluation was accomplished with extensive vehicle aerodynamic measurements with the use of full-scale tests using a pitot-rake and the actual test vehicle. Additional tests were conducted in Oklahoma State University's low speed wind tunnel with a 1/8-scale model using qualitative flow visualization with smoke. Continuing research on the mobile dyno will be discussed, along with other potential uses for the dyno.

Morris, Mason Wade

251

Handbook of Mobile Ad Hoc Networks for Mobility Models  

CERN Document Server

The Mobile Ad Hoc Network (MANET) has emerged as the next frontier for wireless communications networking in both the military and commercial arena. Handbook of Mobile Ad Hoc Networks for Mobility Models introduces 40 different major mobility models along with numerous associate mobility models to be used in a variety of MANET networking environments in the ground, air, space, and/or under water mobile vehicles and/or handheld devices. These vehicles include cars, armors, ships, under-sea vehicles, manned and unmanned airborne vehicles, spacecrafts and more. This handbook also describes how ea

Roy, Radhika Ranjan

2011-01-01

252

Virtual Mobility to Improve Cooperation in Mobile Ad hoc Networks  

Digital Repository Infrastructure Vision for European Research (DRIVER)

We study the impact of mobility on the level of cooperation between mobile nodes in a mobile ad hoc network. In a mobile ad hoc network, if the nodes are static or have a reduced mobility and if some nodes adopt a selfish behaviour, the performance of the network is affected. This is because the same nodes that are relaying the packets. On the other hand, nodes with a significant mobility affect the network topology, hence the traffic often changes routes and the probability that nodes that a...

Baaziz, A.; Pierre, S.

2008-01-01

253

Mobile Phone Terminal  

Science.gov (United States)

In the photo, an employee of a real estate firm is contacting his office by means of HICOM, an advanced central terminal for mobile telephones. Developed by the Orlando Division of Martin Marietta Aerospace, Orlando, Florida, and manufactured by Harris Corporation's RF Division, Rochester, N.Y., HICOM upgrades service to users, provides better system management to telephone companies, and makes more efficient use of available mobile telephone channels through a computerized central control terminal. The real estate man, for example, was able to dial his office and he could also have direct-dialed a long distance number. Mobile phones in most areas not yet served by HICOM require an operator's assistance for both local and long distance calls. HICOM improves system management by automatically recording information on all calls for accurate billing, running continual performance checks on its own operation, and reporting any malfunctions to a central office.

1978-01-01

254

CONTRAIL – ARCHITECTURE FOR MOBILE DATA SHARING APPLICATIONS?  

Directory of Open Access Journals (Sweden)

Full Text Available Collaborative applications running on 3G devices often rely on cloud-based servers forcomputation and storage. A peer to-peer approach to building these applications can provide benefits such asenhanced privacy and bandwidth efficiency. We propose a system which is based on asynchronous networkarchitecture that uses the cloud to relay messages between 3G devices. System employs selective receiverspecificfilters at sending devices to ensure that only relevant data consumes precious bandwidth. Proposedframework offers pull-based communications primitives suitable for mobile devices that are often eitherinactive or subject to poor network connectivity. This system enables robust mobile applications withoutmaking assumptions about the security of individual cloud providers. We have implemented this system withWindows cloud environment and demonstrate sample applications executing across Android mobile phone.Sample application shares the multiple contents like text, video, images and emails. In this paper, weintroduce Contrail, a new communication architecture for mobile data-sharing applications that eliminatesthe drawbacks of the client-server approach while retaining its positive attributes.

Lavanya.K

2013-09-01

255

Mobility of Plasmids†  

Science.gov (United States)

Summary: Plasmids are key vectors of horizontal gene transfer and essential genetic engineering tools. They code for genes involved in many aspects of microbial biology, including detoxication, virulence, ecological interactions, and antibiotic resistance. While many studies have decorticated the mechanisms of mobility in model plasmids, the identification and characterization of plasmid mobility from genome data are unexplored. By reviewing the available data and literature, we established a computational protocol to identify and classify conjugation and mobilization genetic modules in 1,730 plasmids. This allowed the accurate classification of proteobacterial conjugative or mobilizable systems in a combination of four mating pair formation and six relaxase families. The available evidence suggests that half of the plasmids are nonmobilizable and that half of the remaining plasmids are conjugative. Some conjugative systems are much more abundant than others and preferably associated with some clades or plasmid sizes. Most very large plasmids are nonmobilizable, with evidence of ongoing domestication into secondary chromosomes. The evolution of conjugation elements shows ancient divergence between mobility systems, with relaxases and type IV coupling proteins (T4CPs) often following separate paths from type IV secretion systems. Phylogenetic patterns of mobility proteins are consistent with the phylogeny of the host prokaryotes, suggesting that plasmid mobility is in general circumscribed within large clades. Our survey suggests the existence of unsuspected new relaxases in archaea and new conjugation systems in cyanobacteria and actinobacteria. Few genes, e.g., T4CPs, relaxases, and VirB4, are at the core of plasmid conjugation, and together with accessory genes, they have evolved into specific systems adapted to specific physiological and ecological contexts. PMID:20805406

Smillie, Chris; Garcillan-Barcia, M. Pilar; Francia, M. Victoria; Rocha, Eduardo P. C.; de la Cruz, Fernando

2010-01-01

256

Early mobilization following angioplasty  

International Nuclear Information System (INIS)

AIM: To assess the incidence of puncture site complications in in-patients undergoing early mobilization following angioplasty with a view to performing day case angioplasty. MATERIALS AND METHODS: One hundred and twenty-eight patients undergoing peripheral and renal angioplasty using a sheath size of up to 6 French were recruited prospectively. The mobilization protocol consisted of supine bed rest for 2 h, followed by gradual mobilization, so that the patient was ambulant 4 h after the procedure. Mobilization was delayed if clinically appropriate. Puncture sites were scored for discomfort, paraesthesia, visible bruising and palpable haematoma after groin compression and the following morning. RESULTS: One hundred and forty-four puncture sites were studied. There were 44 haematomas in total, of which 37 (26%) were less than 2.5 cm and seven (4.9%) were between 2.5 cm and 7.5 cm. Four patients (2.8%) had visible bruising greater than 7.5 cm. No patient assessed discomfort higher than moderate at any stage. Mobilization was delayed in 15 patients. In 11 this was due to puncture site oozing, haematoma in one, two were hypertensive and one required surgery for limb ischaemia. All complications occurred within 4 h of angioplasty. No patient required surgery or transfusion for haemorrhagic complications. CONCLUSION: Mobilization at 4 h was successful in 90% of cases but 10% require more prolonged bed rest. No delayed complications occurred. These results suggest that day coccurred. These results suggest that day case angioplasty is feasible in most cases. Butterfield, J.S. (2000)

257

Mobile network maintenance (GSM)  

CERN Multimedia

Maintenance work will be carried out on the CERN mobile network infrastructure (GSM) on the 23 and 24 July from 6 p.m. to 6 a.m. in order to replace discontinued equipment and to increase the bandwidth capacity of the GSM mobile network. All CERN GSM emitters (40 units) will be moved one by one to the new infrastructure during the maintenance. The call of a user connected to an emitter at the time of its maintenance will be cut off. However, the general overlapping of the GSM radio coverage should mean that users are able immediately to call again should their call be interrupted. IT/CS/CS

IT Department

2009-01-01

258

Capital mobility. An overview  

Directory of Open Access Journals (Sweden)

Full Text Available The article analyses the problem of international capital mobility which the Asian crisis has highlighted. It points out that the problem of capital mobility ("hot money" panics has a long history, but globalization, the opening up of national economies and technological advance have increased the risks. The article discusses four policy debated which are being pursued in the large Asian crisis literature: (i the pros and cons of capital controls; (ii the choice of exchange rate regime; (iii financial factor reform; and (iv the rule of law.

H. W. Arndt

2000-09-01

259

Professional mobile application development  

CERN Document Server

Create applications for all major smartphone platforms Creating applications for the myriad versions and varieties of mobile phone platforms on the market can be daunting to even the most seasoned developer. This authoritative guide is written in such as way that it takes your existing skills and experience and uses that background as a solid foundation for developing applications that cross over between platforms, thereby freeing you from having to learn a new platform from scratch each time. Concise explanations walk you through the tools and patterns for developing for all the mobile platfo

McWherter, Jeff

2012-01-01

260

Mobile banking Trends  

Directory of Open Access Journals (Sweden)

Full Text Available M-Banking is fast growing in India as cost effectiveness. It is virtual banking model to used banking in anywhere anytime whenever it requirement. M-Banking service used without paper, so it is help to the society make greener planet. M-Banking provided services without any restrictions. Customers have not visit branch, so its cost beneficiary of all kind. M-Banking means used banking services over through mobile network. Over the last few years, the mobile and wireless market has been one of the fastest growing markets in the world and it is still growing at a rapid pace.

Sunil Lohiya

2012-08-01

 
 
 
 
261

Mobile satellite communication networks  

CERN Document Server

Mobile satellite services are set to change with the imminent launch of satellite personal communication services (S-PCS), through the use of non-geostationary satellites. This new generation of satellites will be placed in low earth orbit or medium earth orbit, hence, introducing new satellite design concepts. One of the first texts to cover this rapidly evolving field, this text provides the reader with an overview of mobile satellite systems, from their initial introduction (Inmarsat), current satellite-PCS (referring to such systems as Globalstar), through to Satellite-UMTS and an understa

Sheriff, Ray E

2003-01-01

262

Mobile banking Trends  

Digital Repository Infrastructure Vision for European Research (DRIVER)

M-Banking is fast growing in India as cost effectiveness. It is virtual banking model to used banking in anywhere anytime whenever it requirement. M-Banking service used without paper, so it is help to the society make greener planet. M-Banking provided services without any restrictions. Customers have not visit branch, so its cost beneficiary of all kind. M-Banking means used banking services over through mobile network. Over the last few years, the mobile and wireless market has been one of...

Sunil Lohiya

2012-01-01

263

Mobility in Cloud Systems  

Directory of Open Access Journals (Sweden)

Full Text Available Cloud computing is a huge amount of distributed and dynamic resources that are provided on request to clients over the Internet. This technology improves applications services by arranging machines and distributed resources in a single huge computational entity. Normally, cloud servers don't operate at full capacity; means there's some processing power will be wasted. To make use of this wasted power, it's possible to use the mobility feature, which is the ability to move, migrate or relocate data, application software or jobs among cloud servers. In this paper I have presented a suggested framework that can deal with the mobility feature in the cloud environment.

Tariq Alwada'n

2014-05-01

264

Land mobile communications satellite  

Science.gov (United States)

The economic value and salient technical and operational characteristics of a European Land Mobile Communication Satellite (LMCS) to complement and supplement the demand for mobile services of Western European countries in the 1995 to 2005 time frames were assessed. A significant future expansion of demand for LCMS services on the part of the public is anticipated. Important augmentations of current service capabilities could be achieved by a satellite service, improving the overall system performances and/or assisting the PTT's in containing their investments in the required infrastructure. The satellite service itself could represent a profitable revenue producer.

Carnebianca, C.; Pavesi, B.; Tuozzi, A.

1986-09-01

265

Mobile Learning Anytime, Anywhere  

Science.gov (United States)

Evidence shows that portable technology tools engage students and promote learning, and the potential for teachers to add academic value to these tools is growing. Some educational institutions are taking the leap to mobile learning (m-learning) by giving out free iPods; however, any technology able to connect to wireless or mobile phone networks or to access Web-based public or private services can be used. As new resources continue to be developed, m-learning takes what we already know about the benefits of e-learning to the next level.

Oksana Hlodan (AIBS;)

2010-10-01

266

Autonomous mobile robot teams  

Science.gov (United States)

This paper describes autonomous mobile robot teams performing tasks in unstructured environments. The behavior and the intelligence of the group is distributed, and the system does not include a central command base or leader. The novel concept of the Tropism-Based Cognitive Architecture is introduced, which is used by the robots in order to produce behavior transforming their sensory information to proper action. The results of a number of simulation experiments are presented. These experiments include worlds where the robot teams must locate, decompose, and gather objects, and defend themselves against hostile predators, while navigating around stationary and mobile obstacles.

Agah, Arvin; Bekey, George A.

1994-01-01

267

Mobile telephones and health  

International Nuclear Information System (INIS)

There is at present no clear evidence that the use of mobile telephones presents any health risk, but the possibility that weak radio-frequency signals may have a negative affect cannot be ruled out. Thus it is recommended that care should be taken while waiting for the results of further research. If adverse health effects that are so far unknown should be discovered, then children may be at risk since their nervous system is developing, they stand at the beginning of a long life, and a child's head can absorb more energy than an adult's head. The article recommends that children should refrain from unnecessary use of the mobile telephone

268

Sampling Strategy  

Science.gov (United States)

Three locations to the right of the test dig area are identified for the first samples to be delivered to the Thermal and Evolved Gas Analyzer (TEGA), the Wet Chemistry Lab (WCL), and the Optical Microscope (OM) on NASA's Phoenix Mars Lander. These sampling areas are informally labeled 'Baby Bear', 'Mama Bear', and 'Papa Bear' respectively. This image was taken on the seventh day of the Mars mission, or Sol 7 (June 1, 2008) by the Surface Stereo Imager aboard NASA's Phoenix Mars Lander. The Phoenix Mission is led by the University of Arizona, Tucson, on behalf of NASA. Project management of the mission is by NASA's Jet Propulsion Laboratory, Pasadena, Calif. Spacecraft development is by Lockheed Martin Space Systems, Denver.

2008-01-01

269

Distributed Mobility Management Scheme for Mobile IPv6  

Science.gov (United States)

Mobile IPv6 and Network Mobility (NEMO) have been standardized as IP extensions. While these technologies are planned to be adopted by several communities, such as the vehicle, aviation, and cellular industries, Mobile IPv6 has serious deployment issues such as scalability, protocol resilience, and redundancy. In these technologies, a special router called a home agent is introduced to support the movement of mobile nodes. This home agent introduces overlapping, inefficient routes, and becomes a single point of failure and a performance bottleneck. In this paper, a new concept for scalable and dependable mobility management scheme is proposed. Multiple home agents serve the same set of mobile nodes. The Home Agent Reliability protocol and Home Agent migration are introduced to achieve this concept. We also propose an overlay network named a Global Mobile eXchange (GMX) that efficiently handles data traffic from and to mobile nodes, and operates home agents as would an Internet eXchange Point (IXP).

Wakikawa, Ryuji; Valadon, Guillaume; Shigechika, Noriyuki; Murai, Jun

270

Bias Sampling  

Science.gov (United States)

In this statistics lesson on bias sampling students conduct a poll of specific populations within their school to determine recommendations for homework policies. Each of three groups is assigned a population to survey and then reports their conclusions to the class. Students will then determine how to improve their survey in order to get unbiased results. A student worksheet for questions and a student template for a letter to the principal are included.

2012-01-01

271

Sample dissolution  

International Nuclear Information System (INIS)

Extensive experimental evidence indicates that variable and incomplete sample dissolution is one of the major causes of the inaccurate results being obtained widely in radiochemical analysis. This conclusion is easily demonstrated by analysis of the residues remaining after the sample has been leached. The residue often contains a significant fraction of the radionuclide being determined. Three procedures involving high-temperature fusions are recommended that ensure complete dissolution of virtually all types of inorganic samples routinely and reliably. With a few unique exceptions encountered over many years of constant use, dissolution of the entire matrix has been so complete that a Tyndall beam could not be observed when the solution of the final fusion cake was examined with a flashlight in a darkened room. Complete material balance studies using radioactive tracers have also shown no significant losses of even the large ter- and quadrivalent radionuclides that could be attributed to incomplete dissolution of high specific-activity particles of the most refractory and intractable species. The recommended fusion procedures are no more hazardous, time-consuming or difficult than other procedures giving much less complete or reliable dissolution

272

Mobility Prediction Based Neighborhood Discovery in Mobile Ad Hoc Networks.  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Hello protocol is the basic technique for neighborhood discovery in wireless ad hoc networks. It requires nodes to claim their existence/ aliveness by periodic 'hello' messages. Central to a hello protocol is the determination of 'hello' message transmission rate. No fixed optimal rate exists in the presence of node mobility. The rate should in fact adapt to it, high for high mobility and low for low mobility. In this paper, we propose a novel mobility prediction based hello protocol, named A...

Li, Xu; Mitton, Nathalie; Simplot-ryl, David

2011-01-01

273

Mobility Prediction Based Neighborhood Discovery for Mobile Ad Hoc Networks  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Hello protocol is the basic technique for neighborhood discovery in wireless ad hoc networks. It requires nodes to claim their existence/aliveness by periodic `hello' messages. Central to any hello protocol is the determination of `hello' message transmission rate. No fixed optimal rate exists in the presence of node mobility. The rate should in fact adapt to it, high for high mobility and low for low mobility. In this paper, we propose a novel mobility prediction based hello protocol, named ...

Li, Xu; Mitton, Nathalie; Simplot-ryl, David

2010-01-01

274

Mobile Environmental Education Laboratory.  

Science.gov (United States)

In May, 1972, the Kingsport (Tennessee) City School System received financial assistance from the Tennessee Valley Authority to plan, develop, and implement, as a demonstration environmental education project, the utilization of a mobile laboratory for conducting environmental studies. The project, as described in this booklet, identified four…

Childress, Ronald B.

275

Waves and mobile phones  

International Nuclear Information System (INIS)

This article reports the methodology used to assess the exposure to radio-frequency of the population. The main radio-frequency emitters are transmitting antennas, mobile phones, Wi-Fi systems, cord-less home phones, and micro-wave ovens. We have to know that the level of exposure is very different depending on the device, for instance a 10 minutes long use of a mobile phone with a DAS (specific absorption dose rate) of 0.04 W/kg is equivalent to a 15 day long exposure to a transmitting antenna at a spot where the field is 0.6 V/m. It appears that for transmitting antennas the exposure levels of the population are always very low and far below the protection standards. As for mobile phones, today's results can not exclude a risk for people having used a phone for more than 10 years. Experts recommend for children a restraint use of mobile phones and for adults to keep a safety distance of a few tens of centimeters between the speaker and his phone. The passage to the new UMTS-3G standard will be favourable. (A.C.)

276

The Mobile Costume Shop.  

Science.gov (United States)

Discusses the difficulties of costume construction for high school theater productions. Advances a plan (and provides a design) for a mobile costume shop which contains the basic needs of a functional costume facility, using only 60 square feet of space. Lists every element and implement needed. (PA)

Witherspoon, Cindy; Nelson, Steve

1998-01-01

277

Calder's Last Mobile.  

Science.gov (United States)

The evolution and change in Alexander Calder's mobiles--from the mid-1920's to his death in 1976--are discussed, and it is suggested that the creative art teacher can easily use Calder's design techniques to enhance an art education program. (KC)

Withers, Brian

1979-01-01

278

The IPA Mobility Program.  

Science.gov (United States)

The Intergovernmental Personnel Act of 1970 Mobility Program and the procedure for applying for one of the temporary positions offered by the program are discussed. It is suggested that faculty members and university administrators are strong candidates for these positions in public policy development and government research. (SF)

Ershkowitz, Miriam

1979-01-01

279

Mobile exhibition in Mexico  

International Nuclear Information System (INIS)

Since January this year, a mobile atomic energy exhibition has been touring the principal cities of Mexico. In organizing this exhibition, the National Nuclear Energy Commission of Mexico was assisted by the International Atomic Energy Agency which has placed its second mobile radioisotope laboratory at the disposal of the Mexican authorities. In many States of the Republic, the visit of the mobile laboratory has given a powerful impetus to atomic training and research. Universities have made use of the laboratory for the training of young scientists in the basic isotope techniques. As a sequel to the work initiated with its aid, some universities are planning to start regular training courses in this field. The laboratory, which is a gift to the Agency from the United States, has been put to its first assignment in Mexico. It will shortly be sent to Argentina for a period of six months for use in training courses. IAEA's first mobile radioisotope unit, also donated by the United States, has been used for training purposes in Austria, the Federal Republic of Germany, Greece and Yugoslavia, and has now been sent to the Far East

280

Mobile teleoperator remote sensing  

International Nuclear Information System (INIS)

Sensing systems are an important element of mobile teleoperators and robots. This paper discusses certain problems and limitations of vision and other sensing systems with respect to operations in a radiological accident environment. Methods which appear promising for near-term improvements to sensor technology are described. 3 refs

 
 
 
 
281

Mathematics and Mobile Learning  

Science.gov (United States)

This paper argues for an approach to mobile learning that leverages students' informal digital practices as resources for designing mathematics classrooms activities. We briefly describe two exploratory designs along these lines, one featuring the use of photos taken by students outside class and the other centered on their recording and…

White, Tobin; Martin, Lee

2014-01-01

282

Security of mobile communications  

CERN Document Server

Covers the complex security issues that face the mobile communications industry. This book discusses hacking and infecting with viruses; techniques used to provide access control, authentication, and authorization; the security of SIM-like cards; and, standards implemented by the GSM, third generation, WLAN, and ad-hoc networks.

Boudriga, Noureddine

2009-01-01

283

Mobile antenna systems handbook  

CERN Document Server

This ultimate one-stop reference is designed to save you a mountain of work. You get hands-on expertise for every type of mobile antenna base station and terminal system, including its theory of operation, application strengths and weaknesses, performance characteristics, design procedures, analysis techniques, and optimization methods, complete with examples and worked-out calculations at every step.

Fujimoto, Kyohei

2008-01-01

284

Mobile Agents Applications.  

Science.gov (United States)

Discussion of the need to filter and retrieval relevant information from the Internet focuses on the use of mobile agents, specific software components which are based on distributed artificial intelligence and integrated systems. Surveys agent technology and discusses the agent building package used to develop two applications using IBM's Aglet…

Martins, Rosane Maria; Chaves, Magali Ribeiro; Pirmez, Luci; Rust da Costa Carmo, Luiz Fernando

2001-01-01

285

Mobile Learning for All  

Science.gov (United States)

Parents and educational professionals are asking the question, "Are schools preparing students for their future lives?" Mobile technologies such as smart phones, iPods, GPS systems, iPads, and a constant stream of information drive much of people's world and work. The use of such technologies increases with each passing day. But how often do…

Bestwick, Angel; Campbell, John R.

2010-01-01

286

Privacy issues in mobile advertising  

DEFF Research Database (Denmark)

The emergence of the wired Internet and mobile telecommunication networks is creating new opportunities for advertisers to generate new revenue streams through mobile users. As consumer adoption of mobile technology continues to increase, it is only a question of time when mobile advertising becomes an important part of marketing strategies. The development of mobile advertising, however, will be dependent on acceptance and usability issues in order to ensure permission-based advertising. Growing concerns about the protection of the users' privacy have been raised since mobile advertising may become extremely intrusive practices in an intimate personal space. This article focuses on the evaluation of legal problems raised by this novel form of advertising. It is assumed that a technological design, which is in line with the legal framework, will ensure that the benefits of mobile advertising and the consumer willingness to accept mobile advertising will increase.

Cleff, Evelyne Beatrix

287

Eldercare at Home: Mobility Problems  

Science.gov (United States)

... hazards in the home Encourage activity/exercise to improve mobility and strength Report any recurrent falls or near ... recommend special posture exercises that will strengthen and improve ... mobility problems and recommend specific balance-improving exercises that ...

288

Prospects for inclusive mobile learning  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Mobile learning promises more equitable access to education, especially to those who have suffered exclusion for social or economic reasons. Yet concerns have been raised that mobile technologies also introduce certain problems and barriers. Furthermore, unforeseen technological developments in the mobile marketplace undermine the fragile stability of mobile learning, while it struggles to assert itself as an acceptable innovation within education. This paper examines the concept of inclusive...

Kukulska-hulme, Agnes

2012-01-01

289

Security threats in Prepaid Mobile  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Recent communications environment significantly expand the mobile environment. Prepaid mobile services for 3G networks enables telecommunication to sign up new users by utilizing the latest in converged billing technologies. The worldwide mobile communication market is exploding, and 50 percent of subscribers are expected to use prepaid billing . Prepaid services are driving mobile communication into emerging markets such as South America, Eastern Europe, Asia, Africa and Gu...

Arshiya Begum; Mohammed Tanveer Ali

2013-01-01

290

Collaborative Location Aware Mobile Services  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Mobile devices and services are gaining every day more and more users with new services and applications appearing every day. The high success of new powerful mobile hardware able to support innovative services, like the iPhone and its competitors Blackberry and HTC, has shown that the users are anxiously waiting and are ready to adopt new (mobile) services and applications. Today mobile services are more complementary of the fixed network services, allowing the users to access traditional fi...

Konstantas, Dimitri; Seigneur, Jean-marc

2008-01-01

291

Mobile telephony in the UK  

Digital Repository Infrastructure Vision for European Research (DRIVER)

This paper discusses aspects of recent policy towards mobile telephony in the U.K., including (i) the level of retail charges for calls from fixed to mobile networks, (ii) the level of call termination charges on mobile networks, and (iii) the level of connection subsidies offered by mobile networks. A formal model of the market is introduced, which offers a direct linkage between call termination rates and the level of connection subsidy. This provides a framework for discussing the ideal ...

Armstrong, Mark

1997-01-01

292

MOBILE ROBOT OD3W  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Diploma works presents a mobile robot OD3W and it's operation. Mobile robot OD3W is a robot width three omnidirectional wheels spaced from each other by 120°. Design and implementation of DC motor controller operating in four quadrants is also presented in the work. Next, a CMOS camera used for mobile robot artificial vision is presented. An algorithm for color object detection and tracking is implemented enabling mobile robot OD3W to move and to track objects autonomously.

S?pilak, Dus?an

2011-01-01

293

An Investigation of Initial Trust in Mobile Banking  

Directory of Open Access Journals (Sweden)

Full Text Available A global explosion in the use of electronic commerce has been witnessed in recent times with the monetary value of products and services. This Research has investigate the factors adoption of an initial trust in electronic banking. The purpose of this research is to examine the effect of initial trust on mobile banking user adoption in Kermanshah province of Iran. Based on the valid responses collected from a survey questionnaire, structural equation modeling (SEM technology was employed to examine the research model. The sample was mainly composed of users having rich mobile Internet experience, which may affect their trust in mobile banking. Future research needs to generalize these results to other samples, such as those users without much mobile Internet experience.

Fakhraddin Maroofi

2013-09-01

294

Telemedicine Based on Mobile Devices and Mobile Cloud Computing  

Directory of Open Access Journals (Sweden)

Full Text Available Mobile devices such as smartphones and tablets support kinds of mobile computing and services. They can access to the cloud or offload the computation-intensive part to the cloud computing resources. Mobile cloud computing (MCC integrates the cloud computing into the mobile environment, which extends mobile devices’ battery lifetime, improves their data storage capacity and processing power, and improves their reliability and information security. In this paper, the applications of smartphones in telemedicine and MCC-based telemedicine were presented. Issues on the information security of smartphones and tablets, challenges of smartphones in telemedicine and challenges of MCC-based telemedicine were also introduced.

Lidong Wang

2014-04-01

295

Libraries and the Mobile Revolution  

Science.gov (United States)

With the advent of mobile phones--and smartphones in particular--people are slowly moving away from the notion that mobile phones are just for making calls and texting. This coupled with the fact that the uptake of mobile phones hit the 5 billion mark in 2010 has spurred many libraries to offer services that can be used by their patrons on these…

Krishnan, Yvonne

2011-01-01

296

Mobile satellite service for Canada  

Science.gov (United States)

The Mobile Satellite (MSAT) system and a special program designed to provide interim mobile satellite services (IMSS) during the construction phase of MSAT are described. A mobile satellite system is a key element in extending voice and and data telecommunications to all Canadians.

Sward, David

1988-01-01

297

Mobile Technology in Educational Services  

Science.gov (United States)

The use of computers and the Internet has successfully enabled educational institutions to provide their students and staff members with various online educational services. With the recent developments in mobile technology, further possibilities are emerging to provide such services through mobile devices such as mobile phones and PDAs. By…

Chen, Jueming; Kinshuk

2005-01-01

298

Chromosomal aberrations in mobile phone users in Tamilnadu, southern India  

International Nuclear Information System (INIS)

Complete text of publication follows. Radiofrequency (RF) waves have long been used for different types of information exchange via the airwaves-wireless Morse code, radio, television, and wireless telephony. Increasingly larger numbers of people rely on mobile telephone technology, and health concerns about the associated RF exposure have been raised, particularly because the mobile phone handset operates in close proximity to the human body, and also because large numbers of base station antennas are required to provide widespread availability of service to large populations. In the present study chromosomal damage investigations were carried out on the peripheral blood lymphocytes of individuals using mobile phones, being exposed to MW frequency ranging from 800 to 2000 MHz. The aim of this study is to establish whether mobile phone use (n = 27) increases the frequency of chromosome aberrations (CA) in peripheral blood lymphocytes compared with controls (n = 27) in Tamilnadu, India. After signing a consent form, volunteers provided blood samples (5 ml) to establish cell cultures at 52 hrs. For CA analysis, 100 complete metaphase cells from each subject were evaluated. In the present study, in mobile phone users highly significant results were obtained when compared to control groups. These results highlight a correlation between mobile phone use (exposure to RFR) and genetic damage and require interim public health actions in the wake of widespread use of mobile tein the wake of widespread use of mobile telephony.

299

Microbiological flora of mobile phones of resident doctors  

Directory of Open Access Journals (Sweden)

Full Text Available Background: Many studies revealed that devices like stethoscope, mobile phones can act as an important source of microbes capable of causing nosocomial infections. Hence there is need of defining their role in spreading infection, so that we can take some preventive measures against it. Aims: To screen the mobile phones of resident doctors and perform microbeological study of the organisms isolated. Setting: Resident doctors working at Tertiary Care Hospital. Methods: Swabs of 50 mobile phones of resident doctors were taken by sterile cotton swab and inoculated on Blood agar, MacConkey agar, Sabaraud’s dextrose agar. Isolated organisms were processed according to standard protocol. Results: Swabs of mobile phones of 50 resident doctors were analyzed for presence of micro-organisms. Out of the 50 samples, 30 (60% were contaminated with micro-organisms. 32 micro-organisms were isolated from 50 mobile phones as shown in table 3. Among 32 isolates, Coagulase negative Staphylococci 23 (71.87% was the dominant organism followed by Diphtheroids 7 (21.87%, Aspergillus niger 2 (6.25%. Also proportion of contamination of mobile phones of male resident doctors was more than female resident doctors. Conclusion: Mobile phones may act as a potential source of micro-organisms and spread nosocomial infections. Hence proper infection control practices like proper hand washing, decontamination of mobiles should be routinely practiced.

Sandeep B. Kokate

2012-11-01

300

47 CFR 20.7 - Mobile services.  

Science.gov (United States)

...2010-10-01 2010-10-01 false Mobile services. 20.7 Section 20.7 Telecommunication...COMMERCIAL MOBILE RADIO SERVICES § 20.7 Mobile services. The following are mobile services within the meaning of sections...

2010-10-01

 
 
 
 
301

The Borders of Mobile Handset Ecosystems: Is Coopetition Inevitable?  

Science.gov (United States)

Today, the mobile phone industry witnesses important changes, shifting from a value chain to a burgeoning business ecosystem. This paper deals with the relationships that are at the very core of mobile OS ecosystems for IMTs (smartphones and PDA): Microsoft-OS, Symbian-OS, Palm-OS and RIM-OS over the period 1998-2006. Our study confirms that an ecosystem’s borders are unclear. More than half of our sample’ relationships are shared by at least two different ecosystems. The ecosystems we studied do not differ in terms of exclusive relationship which suggests that coopetitive strategies are particularly relevant in mobile platforms war.

Gueguen, Gaël; Isckia, Thierry

302

Environmental monitoring systems: a new type of mobile laboratory  

International Nuclear Information System (INIS)

hone. The latter also serves for voice communication. Currently three MOLAR systems can be operated parallel and independent from the control centre. The system is ready to be extended to more mobile labs. This combination of mobile monitoring, sample analysis and radiological assessment of environmental data in combination with process occurrences has turned out to be a powerful instrument for emergency preparedness and environmental supervising. (orig.)

303

Barriers to Adoption of Mobile banking: Evidence from Ghana  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The purpose of this research is to investigate the perceived barriers to adoption of mobile banking among consumers, and to assess whether the usage of M-Banking is constraint on the basis of different demographic characteristics such as age, income level, mobile phone usage “experience” and marital status. Data were collected using convenient sampling via self-administered questionnaire in a large university in the Ashanti region of Ghana. A total of usable 189 responses were collected f...

Faisal Iddris

2013-01-01

304

Using USB Keys to Promote Mobile Learning  

Directory of Open Access Journals (Sweden)

Full Text Available M-learning (i.e. mobile learning is a field of e-learning that provides learners learning environments using mobile technology. In this context, learning can take place anywhere and anytime, in open and distance learning. Depending on the type of technology it may be done through software called nomadic (i.e. prepared to mobility. Among these technologies, there are those composed of digital interfaces and with autonomy of treatment: Smartphone, PDA, calculator and even mp3 key. In this article we propose to take into account storage devices as mobile technologies. Our focus was on the USB key. We present a procedure to test whether a learning environment embarked on a USB key can be described as nomadic or not. This procedure has been tested on a sample of three ILE (Interactive Learning Environment. This approach has allowed us to define criteria of nomadism, criteria which were then included in the design of a synchronous Weblog on USB key.

Marilyne Rosselle

2009-07-01

305

Towards a Statistical Physics of Human Mobility  

Science.gov (United States)

In this paper, we extend some ideas of statistical physics to describe the properties of human mobility. From a physical point of view, we consider the statistical empirical laws of private cars mobility, taking advantage of a GPS database which contains a sampling of the individual trajectories of 2% of the whole vehicle population in an Italian region. Our aim is to discover possible "universal laws" that can be related to the dynamical cognitive features of individuals. Analyzing the empirical trip length distribution we study if the travel time can be used as universal cost function in a mesoscopic model of mobility. We discuss the implications of the elapsed times distribution between successive trips that shows an underlying Benford's law, and we study the rank distribution of the average visitation frequency to understand how people organize their daily agenda. We also propose simple stochastic models to suggest possible explanations of the empirical observations and we compare our results with analogous results on statistical properties of human mobility presented in the literature.

Riccardo, Gallotti; Armando, Bazzani; Sandro, Rambaldi

2012-09-01

306

Laboratory experiments in mobile robot navigation  

International Nuclear Information System (INIS)

Mobile robots have potential applications in remote surveillance and operation in hazardous areas. To be effective, they must have the ability to navigate on their own to desired locations. Several experimental navigational runs of a mobile robot developed have been conducted. The robot has three wheels of which the front wheel is steered and the hind wheels are driven. The robot is equipped with an ultrasonic range sensor, which is turned around to get range data in all directions. The range data is fed to the input of a neural net, whose output steers the robot towards the goal. The robot is powered by batteries (12V 10Ah). It has an onboard stepper motor controller for driving the wheels and the ultrasonic setup. It also has an onboard computer which runs the navigation program NAV. This program sends the range data and configuration parameters to the operator''s console program OCP, running on a stationary PC, through radio communication on a serial line. Through OCP, an operator can monitor the progress of the robot from a distant control room and intervene if necessary. In this paper the control modules of the mobile robot, its ways of operation and also results of some of the experimental runs recorded are reported. It is seen that the trained net guides the mobile robot through gaps of 1m and above to its destination with about 84% success measured over a small sample of 38 runs

307

Ion Mobility Spectrometry (IMS) and Mass Spectrometry  

Energy Technology Data Exchange (ETDEWEB)

In a media of finite viscosity, the Coulomb force of external electric field moves ions with some terminal speed. This dynamics is controlled by “mobility” - a property of the interaction potential between ions and media molecules. This fact has been used to separate and characterize gas-phase ions in various modes of ion mobility spectrometry (IMS) developed since 1970. Commercial IMS devices were introduced in 1980-s for field detection of volatile traces such as explosives and chemical warfare agents. Coupling to soft-ionization sources, mass spectrometry (MS), and chromatographic methods in 1990-s had allowed IMS to handle complex samples, enabling new applications in biological and environmental analyses, nanoscience, and other areas. Since 2003, the introduction of commercial systems by major instrument vendors started bringing the IMS/MS capability to broad user community. The other major development of last decade has been the differential IMS or “field asymmetric waveform IMS” (FAIMS) that employs asymmetric time-dependent electric field to sort ions not by mobility itself, but by the difference between its values in strong and weak electric fields. Coupling of FAIMS to conventional IMS and stacking of conventional IMS stages have enabled two-dimensional separations that dramatically expand the power of ion mobility methods.

Shvartsburg, Alexandre A.

2010-04-20

308

Mobile phones and hearing - A review  

Science.gov (United States)

Mobile phones are being widely used throughout the world. Although there is no clear evidence of harmful effects of radiofrequency (RF) radiation at the levels used by these devices, there is widespread public concern that there may be potential for harm. Of all anatomical structures, the ear is closest to the mobile phone, which may lead to relatively high energy deposition in the ear compared to other parts of the body. Till the year 2000 only a few studies had addressed potential adverse effects of EMFs on the hearing system. The potential adverse effects of mobile phone exposure on the hearing system should be investigated, because mobile phones are usually held close to the ear. Until now, most studies have assessed the influence of RF radiation on the central or peripheral auditory system. However, clear conclusions cannot be drawn from these studies regarding the presence or absence of effects because of the limitations in the audiological and/or dosimetric approaches and limited sample sizes. results. Although the presence of possible effects on hearing threshold levels cannot be dismissed entirely, the evidence available is not sufficiently strong to conclude that there are adverse effects. A replication study with a shift in hearing threshold levels at high frequencies as the a priori hypothesis is desirable to resolve this issue.

Lakshmanagowda, Preethi B.; Supe, Sanjay S.; Viswanath, Lokesh; Kunjar, Sathish

2009-01-01

309

Mobile evaporator corrosion test results  

International Nuclear Information System (INIS)

Laboratory corrosion tests were conducted on eight candidates to select a durable and cost-effective alloy for use in mobile evaporators to process radioactive waste solutions. Based on an extensive literature survey of corrosion data, three stainless steel alloys (304L, 316L, AL-6XN), four nickel-based alloys (825, 625, 690, G-30), and titanium were selected for testing. The corrosion tests included vapor phase, liquid junction (interface), liquid immersion, and crevice corrosion tests on plain and welded samples of candidate materials. Tests were conducted at 80 degrees C for 45 days in two different test solutions: a nitric acid solution. to simulate evaporator conditions during the processing of the cesium ion-exchange eluant and a highly alkaline sodium hydroxide solution to simulate the composition of Tank 241-AW-101 during evaporation. All of the alloys exhibited excellent corrosion resistance in the alkaline test solution. Corrosion rates were very low and localized corrosion was not observed. Results from the nitric acid tests showed that only 316L stainless steel did not meet our performance criteria. The 316L welded interface and crevice specimens had rates of 22.2 mpy and 21.8 mpy, respectively, which exceeds the maximum corrosion rate of 20 mpy. The other welded samples had about the same corrosion resistance as the plain samples. None of the welded samples showed preferential weld or heat-affected zone (HAZ) attack. Vapor corrosion was negligible for all alloys. All of the alloys except 316L exhibited either open-quotes satisfactoryclose quotes (2-20 mpy) or open-quotes excellentclose quotes (<2 mpy) corrosion resistance as defined by National Association of Corrosion Engineers. However, many of the alloys experienced intergranular corrosion in the nitric acid test solution, which could indicate a susceptibility to stress corrosion cracking (SCC) in this environment

310

Mobile evaporator corrosion test results  

Energy Technology Data Exchange (ETDEWEB)

Laboratory corrosion tests were conducted on eight candidates to select a durable and cost-effective alloy for use in mobile evaporators to process radioactive waste solutions. Based on an extensive literature survey of corrosion data, three stainless steel alloys (304L, 316L, AL-6XN), four nickel-based alloys (825, 625, 690, G-30), and titanium were selected for testing. The corrosion tests included vapor phase, liquid junction (interface), liquid immersion, and crevice corrosion tests on plain and welded samples of candidate materials. Tests were conducted at 80{degrees}C for 45 days in two different test solutions: a nitric acid solution. to simulate evaporator conditions during the processing of the cesium ion-exchange eluant and a highly alkaline sodium hydroxide solution to simulate the composition of Tank 241-AW-101 during evaporation. All of the alloys exhibited excellent corrosion resistance in the alkaline test solution. Corrosion rates were very low and localized corrosion was not observed. Results from the nitric acid tests showed that only 316L stainless steel did not meet our performance criteria. The 316L welded interface and crevice specimens had rates of 22.2 mpy and 21.8 mpy, respectively, which exceeds the maximum corrosion rate of 20 mpy. The other welded samples had about the same corrosion resistance as the plain samples. None of the welded samples showed preferential weld or heat-affected zone (HAZ) attack. Vapor corrosion was negligible for all alloys. All of the alloys except 316L exhibited either {open_quotes}satisfactory{close_quotes} (2-20 mpy) or {open_quotes}excellent{close_quotes} (<2 mpy) corrosion resistance as defined by National Association of Corrosion Engineers. However, many of the alloys experienced intergranular corrosion in the nitric acid test solution, which could indicate a susceptibility to stress corrosion cracking (SCC) in this environment.

Rozeveld, A.; Chamberlain, D.B.

1997-05-01

311

Clean mobility; future strategy  

International Nuclear Information System (INIS)

ers in the whole orb. In that time, the commercialization of products to scale World cup demanded that they became more and more long journeys, in a quicker way and with more load. The appearance of the machine of vapor constituted an important answer for the challenge faced by the means of that time transport, because it substituted sources of low energy density as and wind in the marine sailing and the animal traction for the mobility of people and of terrestrial load. At the beginning of the present century, the motors of internal combustion conquered earth, sea and air. The distillation of the petroleum and the domain of Otto's thermodynamic cycles and of Diesel, they responded from an overwhelming way to the necessities of a growing world population's mobility, not only in quantity but in an entire range of activities and they displaced the horses from the cities toward the field

312

Security for Mobility  

DEFF Research Database (Denmark)

We show how to use static analysis to provide information about security issues related to mobility. First the syntax and semantics of Mobile Ambients is reviewed and we show how to obtain a so-called 0CFA analysis that can be implemented in polynomial time. Next we consider discretionary access control where we devise Discretionary Ambients, based on Safe Ambients, and we adapt the semantics and 0CFA analysis; to strengthen the analysis we incorporate context-sensitivity to obtain a 1CFA analysis. This paves the way for dealing with mandatory access control where we express both a Bell-LaPadula model for confidentiality as well as a Biba model for integrity. Finally, we use Boxed Ambients as a means for expressing cryptographic key exchange protocols and we adapt the operational semantics and the 0CFA analysis.

Nielson, Hanne Riis; Nielson, Flemming

2002-01-01

313

Mobile Biomass Pelletizing System  

Energy Technology Data Exchange (ETDEWEB)

This grant project examines multiple aspects of the pelletizing process to determine the feasibility of pelletizing biomass using a mobile form factor system. These aspects are: the automatic adjustment of the die height in a rotary-style pellet mill, the construction of the die head to allow the use of ceramic materials for extreme wear, integrating a heat exchanger network into the entire process from drying to cooling, the use of superheated steam for adjusting the moisture content to optimum, the economics of using diesel power to operate the system; a break-even analysis of estimated fixed operating costs vs. tons per hour capacity. Initial development work has created a viable mechanical model. The overall analysis of this model suggests that pelletizing can be economically done using a mobile platform.

Thomas Mason

2009-04-16

314

Indigenization of Urban Mobility  

CERN Document Server

Uncovering urban mobility patterns is crucial for further predicting and controlling spatially embedded events. In this article, we analyze millions of geographical check-ins crawled from a Chinese leading location-based social networking service, Jiepang.com, which contains demographical information and thus allows the group-specific studies. We found distinguishable mobility patterns of natives and non-natives in all five large cities under consideration, and by assigning different algorithms onto natives and non-natives, the accuracy of location prediction can be largely improved compared with pure algorithms. We further propose the so-called indigenization coefficients to quantify to which extent an individual behaves like a native, which depend only on check-in behaviors, instead of any demographical information. To our surprise, a hybrid algorithm weighted by the indigenization coefficients outperforms the mixed algorithm accounting for additional demographical information.

Yang, Zimo; Xie, Xing; Lian, Defu; Rui, Yong; Zhou, Tao

2014-01-01

315

Eine Kategorisierung mobiler Applikationen  

Directory of Open Access Journals (Sweden)

Full Text Available Mobile Applikationen lassen sich auf verschiedene Arten entwickeln. Je nachdem welche Anforderungen an eine Applikation gestellt werden, sollte zwischen einer nativen Umsetzung, einer Webapplikation oder einer Mischung aus beidem gewählt werden. Die Wahl der am besten passenden dieser drei Kategorien ist nicht immer einfach und sollte im Vorfeld genau abgeklärt werden. In diesem Artikel zeigen wir die Eigenheiten dieser drei Kategorien auf und vergleichen sie miteinander anhand von Beispielen und einer fiktiven Ticketing-Applikation.

Hildebrandt Andreas

2012-01-01

316

Teleoperation of mobile robots  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: English Abstract in english This paper proposes a stable control structure for bilateral teleoperation of mobile robots. The proposed control structure includes a time-delay compensation placed on both the local and remote sites of the teleoperation system. Teleoperation experiments through a simulated and real (using Internet [...] ) communication channel are presented to illustrate the performance and stability of the proposed control structure.

E., Slawiñski; V., Mut; J. F., Postigo.

2006-04-01

317

Mobile Phone Faraday Cage  

CERN Document Server

A Faraday cage is an interesting physics phenomena where an electromagnetic wave can be excluded from a volume of space by enclosure with an electrically conducting material. The practical application of this in the classroom is to block the signal to a mobile phone by enclosing it in a metal can! The background of the physics behind this is described in some detail followed by a explanation of some demonstrations and experiments which I have used.

French, M M J

2011-01-01

318

Microcellular CDMA mobile communications  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Because of its well-known ability to both combat multipath and allow multiple users to simultaneously communicate over a channel, spread-spectrum techniques are being considered for use in cellular communication networks. Code division multiple access (CDMA) is becoming a very attractive technique for personal communications networks (PCN) and microcellular mobile communications. This paper evaluates the performance of a microcellular CDMA system by considering the effects of both intracell a...

Wang, J.

1996-01-01

319

Mint-Mobiles  

Science.gov (United States)

Students design, build and test model race cars made from simple materials (lifesaver-shaped candies, plastic drinking straws, Popsicle sticks, index cards, tape) as a way to explore independent, dependent and control variables. They measure the changes in distance travelled with the addition of mass to the vehicles. Students also practice the steps of the engineering design process by brainstorming, planning, building, testing, and improving their "mint-mobiles."

Integrated Teaching And Learning Program

320

Invenio Mobile App  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Project Specification The aim of this openlab summer student project is to enhance mobile user experience for Invenio digital library services. The project will use the Apache Cordova platform to build native Android and iOS applications. The application itself will be built using HTML5 and JavaScript technologies. An initial prototype of the application, targeting mostly search functionality, is available. The selected student will enrich existing functionality...

Cutts, Harry; Kunc?ar, Jir?i?

2014-01-01

 
 
 
 
321

New NOK mobile exhibition  

International Nuclear Information System (INIS)

By means of 20 visual aids, the NOK mobile exhibition aims to illustrate how the NOK satisfies the power requirements of two million people in nine cantons. Of particular interest are the graphs of daily and annual consumption. Examples of the exhibits are a flow model which at the touch of a button demonstrates to the visitor how a pumped-storage or nuclear power station operates, and a model of power transmission. (R.S.)

322

Teleoperation of mobile robots  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: English Abstract in english This paper proposes a stable control structure for bilateral teleoperation of mobile robots. The proposed control structure includes a time-delay compensation placed on both the local and remote sites of the teleoperation system. Teleoperation experiments through a simulated and real (using Internet [...] ) communication channel are presented to illustrate the performance and stability of the proposed control structure.

E., Slawiñski; V., Mut; J. F., Postigo.

323

Integrated mobile robot control  

Science.gov (United States)

This paper describes the structure, implementation, and operation of a real-time mobile robot controller which integrates capabilities such as: position estimation, path specification and tracking, human interfaces, fast communication, and multiple client support. The benefits of such high-level capabilities in a low-level controller was shown by its implementation for the Navlab autonomous vehicle. In addition, performance results from positioning and tracking systems are reported and analyzed.

Amidi, Omead; Thorpe, Charles

1991-01-01

324

Governmobility : The Powers of Mobility  

DEFF Research Database (Denmark)

Mobility is often associated with flow and freedom; nonetheless, it is also about power and government. While mobility studies have shown how interpersonal social relations are increasingly supported by mobile technologies, it seems less clear how mobilities are involved in governing societies. Inspired by Michel Foucault’s concept of governmentality and his 1978 lectures on security, territory and population, this article suggests that societies are increasingly governed through mobility, rather than there being government of mobility. If circulation has become a producer of, rather than an obstacle to, societies, then governmobility is a meaningful concept relating to how societies are ruled through connections. In conclusion, the article asks: what are the implications of governmobility for border studies, and more broadly, what are the powers of mobility studies?

Bærenholdt, JØrgen Ole

2013-01-01

325

Mobile Zigbee Sensor Networks  

CERN Document Server

OPNET Modeler accelerates network R&D and improves product quality through high-fidelity modeling and scalable simulation. It provides a virtual environment for designing protocols and devices, and for testing and demonstrating designs in realistic scenarios prior to production. OPNET Modeler supports 802.15.4 standard and has been used to make a model of PAN. Iterations have been performed by changing the Power of the transmitter and the throughput will has been analyzed to arrive at optimal values.An energy-efficient wireless home network based on IEEE 802.15.4, a novel architecture has been proposed. In this architecture, all nodes are classified into stationary nodes and mobile nodes according to the functionality of each node. Mobile nodes are usually battery-powered, and therefore need low-power operation. In order to improve power consumption of mobile nodes, effective handover sequence based on MAC broadcast and transmission power control based on LQ (link quality) are employed. Experimental resul...

Anantdeep, Er; Kaur, Er Balpreet

2010-01-01

326

Utopias of Mobilities  

DEFF Research Database (Denmark)

Contemporary global challenges to the distribution and organization of mobilities require new ways of envisioning and imagining to bring forward the discussion about new visions and thus policies of future mobilities. This chapter explores the imaginary visioning by using earlier utopian thoughts and visions as ‘prisms’ for the contemporary mobility debate in order to get closer to new imaginaries of technologies, complex systems and cultural change. The chapter is structured in five parts. After the introduction, part two discusses utopian and critical perspectives within urbanism in order to establish the intellectual current of ‘alternative thinking’. In part three we return to the 1950’s and 1960’s stream of what might be termed ‘Techno utopian urbanism’. From the works of Archigram and the Situationist movement in particular a perspective on the utopian imaginary is re-launched. However in order to discuss the situation of contemporary and actual proposals for urban transformation the paper in part four explore the potential to fuelling this discussion by looking at the Danish architectural company BIG. BIG is discussed from its potential as a‘wild contemporary’ shaking, stirring and stimulating the utopian stream of urban imaginary. The chapter ends in part five with some concluding reflections.

Jensen, Ole B.; Freudendal-Pedersen, Malene

2012-01-01

327

Vidas móveis / Mobile Lives  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese O sociólogo britânico John Urry dedicou sua vida acadêmica à reflexão de como os constantes avanços tecnológicos - nos transportes e na comunicação, principalmente - têm transformado a sociedade. Em 2010, com a colaboração de Anthony Elliott, Urry lança o livro Mobile Lives, no qual objetiva analisa [...] r sociologicamente como os já referidos avanços influenciam as múltiplas e novas maneiras que as identidades são constituídas e organizadas, através de vários espaços e no decorrer do tempo. Esse texto tem como objetivo destacar os principais pontos do referido livro, cotejando-o com as obras anteriores de Urry por considerar que constituem o mesmo esforço de consolidar o chamado paradigma das mobilidades. Abstract in english The British sociologist John Urry has devoted his academic life to think on how the constant technological advances - in transport and communications, especially - have transformed the society. In 2010, with the collaboration of Anthony Elliott, Urry publishes Mobile Lives, which aims to analyze soc [...] iologically, how the aforementioned technological advances affect the multiple and new ways that identities are formed and organized through various spaces and in the course time. This text aims to highlight the main points of this book, comparing it with the previous work of Urry considering that constitute the same effort to consolidate the mobilities paradigm.

João, Freitas.

2014-04-01

328

Mobile 3D tomograph  

International Nuclear Information System (INIS)

Mobile tomographs often have the problem that high spatial resolution is impossible owing to the position or setup of the tomograph. While the tree tomograph developed by Messrs. Isotopenforschung Dr. Sauerwein GmbH worked well in practice, it is no longer used as the spatial resolution and measuring time are insufficient for many modern applications. The paper shows that the mechanical base of the method is sufficient for 3D CT measurements with modern detectors and X-ray tubes. CT measurements with very good statistics take less than 10 min. This means that mobile systems can be used, e.g. in examinations of non-transportable cultural objects or monuments. Enhancement of the spatial resolution of mobile tomographs capable of measuring in any position is made difficult by the fact that the tomograph has moving parts and will therefore have weight shifts. With the aid of tomographies whose spatial resolution is far higher than the mechanical accuracy, a correction method is presented for direct integration of the Feldkamp algorithm

329

Vidas móveis / Mobile Lives  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese O sociólogo britânico John Urry dedicou sua vida acadêmica à reflexão de como os constantes avanços tecnológicos - nos transportes e na comunicação, principalmente - têm transformado a sociedade. Em 2010, com a colaboração de Anthony Elliott, Urry lança o livro Mobile Lives, no qual objetiva analisa [...] r sociologicamente como os já referidos avanços influenciam as múltiplas e novas maneiras que as identidades são constituídas e organizadas, através de vários espaços e no decorrer do tempo. Esse texto tem como objetivo destacar os principais pontos do referido livro, cotejando-o com as obras anteriores de Urry por considerar que constituem o mesmo esforço de consolidar o chamado paradigma das mobilidades. Abstract in english The British sociologist John Urry has devoted his academic life to think on how the constant technological advances - in transport and communications, especially - have transformed the society. In 2010, with the collaboration of Anthony Elliott, Urry publishes Mobile Lives, which aims to analyze soc [...] iologically, how the aforementioned technological advances affect the multiple and new ways that identities are formed and organized through various spaces and in the course time. This text aims to highlight the main points of this book, comparing it with the previous work of Urry considering that constitute the same effort to consolidate the mobilities paradigm.

João, Freitas.

330

Lazy Mobile Intruders  

DEFF Research Database (Denmark)

We present a new technique for analyzing platforms that execute potentially malicious code, such as web-browsers, mobile phones, or virtualized infrastructures. Rather than analyzing given code, we ask what code an intruder could create to break a security goal of the platform. To avoid searching the infinite space of programs that the intruder could come up with (given some initial knowledge) we adapt the lazy intruder technique from protocol verification: the code is initially just a process variable that is getting instantiated in a demand-driven way during its execution. We also take into account that by communication, the malicious code can learn new information that it can use in subsequent operations, or that we may have several pieces of malicious code that can exchange information if they \\meet". To formalize both the platform and the malicious code we use the mobile ambient calculus, since it provides a small, abstract formalism that models the essence of mobile code. We provide a decision procedurefor security against arbitrary intruder ambients when the honest ambients can only perform a bounded number of steps and without path constraints in communication.

Mödersheim, Sebastian Alexander; Nielson, Flemming

2012-01-01

331

Mobile satellite systems.  

Science.gov (United States)

Satellite communication is a technique which has been used in telemedicine, often for educational purposes. Almost all of the work has concerned the use of fixed satellite terminals. Mobile satellite services (MSS) provide two-way voice and data communication from hand-held terminals, where the final link to the subscriber is by satellite. A number of new MSS systems are expected to become operational by 2001, providing either regional or global coverage. The most well developed proposals are Globalstar, ICO, Iridium and Odyssey. All the proposed systems use non-geostationary satellites. The MSS systems will allow international travellers to make and receive calls using a unique telephone number for their handset anywhere in the world where the service has been authorized by the local regulatory authorities. Data and fax services will also be available. By 2002 the proposed MSS systems might serve a million subscribers in Western Europe, although this is less than 1% of the expected number of mobile phone users. To recoup the development costs, the price of MSS airtime is expected to be high compared with existing mobile phones. PMID:10628016

Lamminen, H

1999-01-01

332

Integron associated mobile genes  

Science.gov (United States)

Lateral gene transfer (LGT) impacts on the evolution of prokaryotes in both the short and long-term. The short-term impacts of mobilized genes are a concern to humans since LGT explains the global rise of multi drug resistant pathogens seen in the past 70 years. However, LGT has been a feature of prokaryotes from the earliest days of their existence and the concept of a bifurcating tree of life is not entirely applicable to prokaryotes since most genes in extant prokaryotic genomes have probably been acquired from other lineages. Successful transfer and maintenance of a gene in a new host is understandable if it acts independently of cell networks and confers an advantage. Antibiotic resistance provides an example of this whereby a gene can be advantageous in virtually any cell across broad species backgrounds. In a longer evolutionary context however laterally transferred genes can be assimilated into even essential cell networks. How this happens is not well understood and we discuss recent work that identifies a mobile gene, unique to a cell lineage, which is detrimental to the cell when lost. We also present some additional data and believe our emerging model will be helpful in understanding how mobile genes integrate into cell networks. PMID:22754748

Labbate, Maurizio; Boucher, Yan; Luu, Ivan; Chowdhury, Piklu Roy; Stokes, H.W.

2012-01-01

333

Mobile Probing and Probes  

DEFF Research Database (Denmark)

Mobile probing is a method, developed for learning about digital work situations, as an approach to discover new grounds. The method can be used when there is a need to know more about users and their work with certain tasks, but where users at the same time are distributed (in time and space). Mobile probing was inspired by the cultural probe method, and was influenced by qualitative interview and inquiry approaches. The method has been used in two subsequent projects, involving school children (young adults at 15-17 years old) and employees (adults) in a consultancy company. Findings point to mobile probing being a flexible method for uncovering the unknowns, as a way of getting rich data to the analysis and design phases. On the other hand it is difficult to engage users to give in depth explanations, which seem easier in synchronous dialogs (whether online or face2face). The development of the method, its application to the two projects, and the challenges and potentials which were found are discussed in this paper.

Duvaa, Uffe; Ørngreen, Rikke

2013-01-01

334

Mobile EEG in epilepsy.  

Science.gov (United States)

The sensitivity of routine EEG recordings for interictal epileptiform discharges in epilepsy is limited. In some patients, inpatient video-EEG may be performed to increase the likelihood of finding abnormalities. Although many agree that home EEG recordings may provide a cost-effective alternative to these recordings, their use is still not introduced everywhere. We surveyed Dutch neurologists and patients and evaluated a novel mobile EEG device (Mobita, TMSi). Key specifications were compared with three other current mobile EEG devices. We shortly discuss algorithms to assist in the review process. Thirty percent (33 out of 109) of Dutch neurologists reported that home EEG recordings are used in their hospital. The majority of neurologists think that mobile EEG can have additional value in investigation of unclear paroxysms, but not in the initial diagnosis after a first seizure. Poor electrode contacts and signal quality, limited recording time and absence of software for reliable and effective assistance in the interpretation of EEGs have been important constraints for usage, but in recent devices discussed here, many of these problems have been solved. The majority of our patients were satisfied with the home EEG procedure and did not think that our EEG device was uncomfortable to wear, but they did feel uneasy wearing it in public. PMID:24060755

Askamp, Jessica; van Putten, Michel J A M

2014-01-01

335

High-mobility diamond  

Science.gov (United States)

Recent improvements in the CVD diamond deposition process have made possible the fabrication of diamond photoconductive diodes with carrier mobility and lifetime exceeding the values typical of natural gemstones. One of the more surprising recent results is that the best room-temperature carrier properties have been measured on polycrystalline diamond films. The combined electron- hole mobility, as measured by transient photoconductivity at low carrier densities, is 4000 square centimeters per volt per second at electric field of 200 volts per centimeter and is comparable to that of the best single-crystal IIa natural diamonds. Carrier lifetimes measured under the same conditions are 150 picoseconds for the CVD diamond films. The collection distance within the diamond films, at the highest applied fields, is comparable to the average film grain size, indicative of little or no carrier scattering at grain boundaries. A comparison of SIMS measurements with electrical results suggest that impurity incorporation in the near grain boundary regions are responsible for controlling the carrier mobility.

Landstrass, Maurice I.

1994-04-01

336

Expectations and Levels of Understanding When Using Mobile Phones among 9-11-Year Olds in Wales, UK  

Science.gov (United States)

There is growing interest in examining the use of mobile technology among children. The present study extended this literature among a sample of 9-11-year olds in Wales, UK in three ways. First, to examine the level of mobile phone ownership; second, to consider how mobile phones are used, investigate timescales and expectations when communicating…

Turley, Joanne; Baker, Sally-Ann; Lewis, Christopher Alan

2014-01-01

337

Mobile Robots for Hospital Logistics  

DEFF Research Database (Denmark)

Hospitals are complex and dynamic organisms that are vital to the well-being of societies. Providing good quality healthcare is the ultimate goal of a hospital, and it is what most of us are only concerned with. A hospital, on the other hand, has to orchestrate a great deal of supplementary services to maintain the quality of healthcare provided. Logistics is the most resource demanding service in a hospital. The scale of the transportation tasks is huge and the material flow in a hospital is comparable to that of a factory. We believe that these transportation tasks, to a great extent, can be and will be automated using mobile robots. This talk consequently addresses the key technical issues of implementing service robots in hospitals. In simple terms, a robotic system for automating hospital logistics has to be reliable, adaptable and scalable. Robots have to be semi-autonomous, and should reliably navigate in large and dynamic environments in the hospital. The complexity of the problem has to be manageable, and the solutions have to be flexible, so that the system can be applicable in real world settings. This talk summarizes the efforts to address these issues. Upon the analysis of the transportation tasks and how they are currently handled in hospitals, a navigation system is envisaged. The concept of hybrid mapping is at the core of the solution, making it possible to efficiently represent the environment. Topological nodes greatly improve planning capabilities, and create a redundant layer for localization. The system features automatic annotation, which significantly reduces manual work and offer many advantages beyond robotics. A case study on logistics solutions is finally presented. A robotic solution is tested in a hospital to handle the transportation of blood samples between the clinic and the lab. Without any environmental modification; it is shown that lab turnover time can be reduced from hours to minutes; by simply replacing the human porter with a mobile robot.

Özkil, Ali Gürcan

338

Securing mobile code.  

Energy Technology Data Exchange (ETDEWEB)

If software is designed so that the software can issue functions that will move that software from one computing platform to another, then the software is said to be 'mobile'. There are two general areas of security problems associated with mobile code. The 'secure host' problem involves protecting the host from malicious mobile code. The 'secure mobile code' problem, on the other hand, involves protecting the code from malicious hosts. This report focuses on the latter problem. We have found three distinct camps of opinions regarding how to secure mobile code. There are those who believe special distributed hardware is necessary, those who believe special distributed software is necessary, and those who believe neither is necessary. We examine all three camps, with a focus on the third. In the distributed software camp we examine some commonly proposed techniques including Java, D'Agents and Flask. For the specialized hardware camp, we propose a cryptographic technique for 'tamper-proofing' code over a large portion of the software/hardware life cycle by careful modification of current architectures. This method culminates by decrypting/authenticating each instruction within a physically protected CPU, thereby protecting against subversion by malicious code. Our main focus is on the camp that believes that neither specialized software nor hardware is necessary. We concentrate on methods of code obfuscation to render an entire program or a data segment on which a program depends incomprehensible. The hope is to prevent or at least slow down reverse engineering efforts and to prevent goal-oriented attacks on the software and execution. The field of obfuscation is still in a state of development with the central problem being the lack of a basis for evaluating the protection schemes. We give a brief introduction to some of the main ideas in the field, followed by an in depth analysis of a technique called 'white-boxing'. We put forth some new attacks and improvements on this method as well as demonstrating its implementation for various algorithms. We also examine cryptographic techniques to achieve obfuscation including encrypted functions and offer a new application to digital signature algorithms. To better understand the lack of security proofs for obfuscation techniques, we examine in detail general theoretical models of obfuscation. We explain the need for formal models in order to obtain provable security and the progress made in this direction thus far. Finally we tackle the problem of verifying remote execution. We introduce some methods of verifying remote exponentiation computations and some insight into generic computation checking.

Link, Hamilton E.; Schroeppel, Richard Crabtree; Neumann, William Douglas; Campbell, Philip LaRoche; Beaver, Cheryl Lynn; Pierson, Lyndon George; Anderson, William Erik

2004-10-01

339

Mobile Governance - An Indian Perspective  

Directory of Open Access Journals (Sweden)

Full Text Available M-Governance is a strategy and its implementation involves the utilization of all kinds of wireless and mobile technology services, applications and devices for improving benefits for citizens, business and all Government units. The rapid diffusion of mobile ICT gadgets such as laptops, mobile phones, PDAs (Personal Digital Assistants, along with emails, instant messaging and other networking services have rapidly fuelled the mobilization of interaction. People, vehicles, air traffic, post and information have become more and more mobile around the world and our society is increasingly being recognized as a nomadic or mobile society. All these clearly indicate the burgeoning public interest in mobility and various issues relating to ‘being mobile.’ Mobility is being regarded as a new paradigm in computing. The mobile revolution will soon outpace the Internet revolution. The new paradigm shift will be marked by mobile, "Always- on" citizens, government, as well as the transient on-line communities.  In order to take the full advantage of the mobile and wireless ICT technology as well as dealing with the fluidity of the interaction with the mobile society and a booming mobile usage rates some  Government has initiated action to set up m-government Services offered by  departments identified for pilot level implementation and to deliver services though mobile phones accessible to the citizens in the field, in the street, at home or other convenient locations on a 24 x 7 basis, rather than the users having to visit Government offices or log on to the Internet portals to access services. Governments in various countries are working on several projects to deliver various services to the public using mobile phones. M-governance’s objective is to make it possible for people of the country to access different kinds of information, and eventually even equip them to effect payments of bills, using their mobile phones. At this scenario the objective of the paper is to explore the potential for m-governance in India, next section throws some light on case studies on m- governance, third section concentrates and policy and regulatory issues pertaining to m-governance in India and finally ends with conclusion.Keywords:  M-Governance: Mobile Governance, ICT: Information and Communication Technologies, Policy Issues.

ponasanapalli sree sudha

2011-08-01

340

Trusted Mobile Client for Document Security in Mobile Office Automation  

Directory of Open Access Journals (Sweden)

Full Text Available Mobile Office Automation is a popular application on the mobile platform. However, the mobile platform has no enough security protection in front of the open system, such as internet. The document security problem in this application has become a hot topic. This paper proposed a new solution to this problem. The solution based on the trusted computing technology, which implements the platform security by hardware. The solution also includes the transparent encryption technology that means application could run independent to the security module and keep the consistency of user experience. The trusted mobile client platform architecture and security functions process of the mobile document protection system are detailed. Related work also been introduced; the security analysis shows the proposed solution could provide well security enhancement for document protection in mobile platform.

Xiaojun Yu

2011-02-01

 
 
 
 
341

Developing Mobile Collaborative Learning Applications for Mobile Users  

Directory of Open Access Journals (Sweden)

Full Text Available With the rapid growth wireless communication technologies, the number of mobile applications have been developing. One of them is approached for mobile learning area since it is unique in its own way and offers learning opportunities anywhere and anytime. Mobile collaborative learning (MCL is a small group learning application based on mobile devices. MCL is a new exciting research area in which students can earn knowledge about a topic and concept via communicating with others by a mobile device. This paper introduces describes the theoretical and technical foundations for designing and developing an effective MCL environment. Also, the paper describes a new approach for building the MCL application towards mobile technology. The prototype will be constructed using Android operating system with suggesting necessary infrastructure and middleware. Finally, the paper include the result of a usability test to find valuable hidden facilitating issues to efficiently access and obtain the class contents in collaborative learning environment.

Kwang B Lee

2011-10-01

342

Mobile Web – Enterprise Application Advantages  

Directory of Open Access Journals (Sweden)

Full Text Available This paper enlightens the benefits offered by enabling web applications on Mobile devices and also addresses the current business challenges in developing Mobile Web applications. This paper is intended for all business domains irrespective of application portfolios. Mobile enterprise application platform solutions are the core technology offerings that enable mobile enterprise applications and are the basis for organizations that are building, deploying, and supporting mobile enterprise applications. Mobile enterpriseapplication platform solutions bring tremendous value to organizations and end users in the form of enhanced productivity, improved organizational efficiency, increased revenue, and better customer care.Technologies for mobile enterprise application platform are vastly improved with an opportunity for cloudbasedor on-premise solutions; native, hybrid, or mobile Web applications; and B2E, B2B, and B2Cdeployments. In addition, the promise of faster time to market and lower initial costs for mobile applicationshas allowed organizations to embrace mobile enterprise application platform solutions in a way they neverhave before.

Sanjeev Narayan Bal?

2013-02-01

343

Tongue mobility in patients with cerebral palsy  

Directory of Open Access Journals (Sweden)

Full Text Available Background/Aim. In children with cerebral palsy speech is a big problem. Speech of these children is more or less understandable, depending on the degree of reduced mobility of articulatory organs. Reduced mobility is affected by inability to control facial grimacing and poor muscle strength when performing targeted movements. The aim of this study was to determine the mobility of tongue in patients with cerebral palsy. Methods. The study included a sample of 34 children - patients with cerebral palsy who had been treated in the Special Hospital for the Cerebral Palsy and Developmental Neurology in Belgrade. The patients were divided according to the determined diagnosis into two groups: Quadriparesis spastica (n = 11 and Morbus Little (n = 16. The children, aged 8-12 years, had preserved intelectual abilities, and all of them had preserved hearing. The study was conducted during the period from January to September 2009. The functional state of articulatory organs in both groups was tested by the C-test that examines the anatomic structure and mobility of the articulatory organs. Results. Our research showed that both groups of the patients had impaired functional state of the tongue - the most mobile articulatory organ. Also, the research showed that the functional state of the tongue was worse in children diagnosed with Quadriparesis spastica. A statistically significant correlation between the diagnosis and the functional state of the tongue, the tongue test performance and the retention of the tongue in a given position was found (r = 0.594, p < 0.005; r = 0.816, p < 0.01 and r = 0.738, p < 0.001, respectively. Conclusion. A large percentage of children with cerebral palsy were not able to establish control over the position of articulatory organs, especially the tongue, and its retention in a given position, all of which affect the quality of speech.

Živkovi? Zorica

2012-01-01

344

Mobile communities importance of mobile learning in Indian education system  

Digital Repository Infrastructure Vision for European Research (DRIVER)

When the United States thinks about developing an 'iPhone University', developing economies envision a 'Mobile University'. Technology in Education has rippled from Distance-learning to e-Learning and now to m-Learning. Going forward into the 21st Century, emerging markets are witnessing a substantial rise in the use of hand-held mobile devices. Convergence of Mobile Technology and Education, therefore, is a potential breakthrough in the art of Teaching and Learning. This thesis aims to exten...

Gupta, Neha

2008-01-01

345

Alert!!! Beware of mobile phones!!! Has a great role in disease transmission, Clean them up!!!! Safe to handle…  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Socially and professionally mobile phones are indispensable and are used in an environment of high microbial flora. This study is alerting to “Beware of Mobile Phones!!! has a great role in disease transmission”. Aims and Objectives: This study deals with the spread of both hospital and community associated microbial infections from the unavoidable mobile phones.Materials and Methods: Sterile samples were obtained from 255 mobile phones and divided into 5 categories of people as follows:...

Sue Elizabeth Shajan, Mohammed Faisal Hashim

2013-01-01

346

Mobilization processes from vanadium alloys during oxidation  

International Nuclear Information System (INIS)

The mobilization of several elements from vanadium alloys in flowing air was measured for temperatures between 600 and 1200 degree C. Alloys with nominal compositions of V-5Cr-5Ti and minor amounts of calcium, scandium, and manganese added to simulate transmutation products were prepared by powder metallurgy. Mobilization of the three major alloying elements and the three minor additions was measured using a transpiration test method. Volatilization of sodium was modeled based upon equilibrium concentrations of this metal on the oxide scale resulting from the dissociation of Na2O, the concentrations of vanadium oxides (V2O4 and V2O5), and the oxygen content in the gas above the sample. 8 refs., 8 figs

347

Cooperative Distributed Sensors for Mobile Robot Localization  

Directory of Open Access Journals (Sweden)

Full Text Available This paper presents a probabilistic algorithm to collaborate distributed sensors for mobile robot localization. It uses a sample-based version of Markov localization—Monte Carlo localization (MCL, capable of localizing mobile robot in an any-time fashion. During robot localization given a known environment model, MCL method is employed to update robot’s belief whichever information (positive or negative attained from environmental sensors. Meanwhile, an implementation is presented that uses color environmental cameras for robot detection. All the parameters of each environmental camera are unknown in advance and need be calibrated independently by robot. Once calibrated, the positive and negative detection models can be built up according to the parameters of environmental cameras. A further experiment, obtained with the real robot in an indoor office environment, illustrates it has drastic improvement in global localization speed and accuracy using our algorithm.

Zhiwei Liang

2010-05-01

348

From mobile mental health to mobile wellbeing: opportunities and challenges.  

Science.gov (United States)

The combination of smart phones, wearable sensor devices and social media offer new ways of monitoring and promoting mental and physical wellbeing. In this contribution, we describe recent developments in the field of mobile healthcare (or mHealth), by focusing in particular on mobile mental health applications. First, we examine the potential benefits associated with this approach, providing examples from existing projects. Next, we identify and explain possible differences in focus between mobile mental health and mobile wellbeing applications. Finally, we discuss some open challenges associated with the implementation of this vision, ranging from the lack of evidence-based validation to privacy, security and ethical concerns. PMID:23400146

Gaggioli, Andrea; Riva, Giuseppe

2013-01-01

349

Soft Mobility and Urban Transformation Soft Mobility and Urban Transformation  

Directory of Open Access Journals (Sweden)

Full Text Available This paper examines some European cases referred to promotion of soft mobility as a new lifestyle aimed to improve benefits on environment and urban liveability. Soft mobility includes any non-motorized transport (human powered mobility. According to this, soft mobility refers to pedestrian, bicycle, roller skate and skateboard transfers. It could be indented as “zeroimpact” mobility too. As a matter of fact, the words to define this way of moving have not been codified yet, therefore mobilitè douce, soft mobility, slow traffic are synonymous in referring mainly to pedestrians and cyclists to indicate alternative to car use. Soft mobility, indeed, can be defined as a special form of sustainable mobility able to optimize urban liveability, by keeping the individual right to move. At present, cities are engaged in defining policies, procedures and interventions to further “slow traffic”, both to relieve the traffic congestion, and to work for regeneration and environmental improvements. This asks for an in-depth cooperation between different political and administrative levels to achieve common objectives of development more attentive to environmental concerns. Despite this increasing attention, the idea of a “network” for soft mobility has not been yet achieved and the supply of integrated facilities and services as an alternative to the car use seems to be still difficult of accomplishment. High disparity characterizes European countries in promoting soft mobility: despite a prolific production of laws and roles referred to emergency of adopting alternative ways of moving to minimize negatives impacts (especially air and noise pollution as very threat to health due to car dependence for urban short distance too. And yet, soft mobility could represent a real occasion of urban and territorial regeneration aimed to rehabilitate some disused paths and routes (greenways. Some successful European cases show how it is possible to capitalize territorial resources by promoting alternative way to visit them. Tourist and leisure activities, in fact, are probably the most suitable to improve a car-free lifestyle. Some pilot projects carried out in alpine regions, for instance, propose to integrate public transport supply with tourist demand of visiting different destinations. “Soft mobility” should be a different way of thinking about mobility and its impact on environment. This is what this article try to underline giving an overview of some European cases of public policies aimed at supporting soft mobility.This paper examines some European cases referred to promotion of soft mobility as a new lifestyle aimed to improve benefits on environment and urban liveability. Soft mobility includes any non-motorized transport (human powered mobility. According to this, soft mobility refers to pedestrian, bicycle, roller skate and skateboard transfers. It could be indented as “zeroimpact” mobility too. As a matter of fact, the words to define this way of moving have not been codified yet, therefore mobilitè douce, soft mobility, slow traffic are synonymous in referring mainly to pedestrians and cyclists to indicate alternative to car use. Soft mobility, indeed, can be defined as a special form of sustainable mobility able to optimize urban liveability, by keeping the individual right to move. At present, cities are engaged in defining policies, procedures and interventions to further “slow traffic”, both to relieve the traffic congestion, and to work for regeneration and environmental improvements. This asks for an in-depth cooperation between different political and administrative levels to achieve common objectives of development more attentive to environmental concerns. Despite this increasing attention, the idea of a “network” for soft mobility has not been yet achieved and the supply of integrated facilities and services as an alternative to the car use seems to be still difficult of accomplishment. High disparity characterizes European countries in promotin

Rosa Anna La Rocca

2010-04-01

350

Tethered Contactless Mobile Nuclear Environment Monitoring Robot  

Energy Technology Data Exchange (ETDEWEB)

In fact, the nuclear environment monitoring is significantly crucial for early detection of NPP accident, radiological emergency, the estimation of radiation exposure to nearby residents as well as the long term radioactivity. In the UAE, the nuclear environment monitoring is, however, quite challenging because sampling locations are far from NPPs and the outdoor temperature and humidity are very high for NPP workers to collect soil, air, and water samples. Therefore, nuclear environment monitoring robots (Nubos) are strongly needed for the NPPs in the UAE. The Nubos can be remotely controlled to collect samples in extreme environment instead of NPP workers. Moreover, the Nubos can be unmanned ground vehicles (UGVs), unmanned aerial vehicles (UAVs) and unmanned marine vehicles (UMVs) to collect soil, air, and water samples, respectively. In this paper, the prototype development of UGV type Nubos using power cable for a long distance power delivery, called Tethered contactless mobile Nubo is introduced and validated by experiments. In this paper, the prototype development of Tethered Contactless Mobile (TeCoM) Nubo, which can be powered continuously within several km distance and avoid tangled cable, and the indoor test are finished. As further works, outdoor demonstration and a grand scale R and D proposal of practical Nubo will be proceeded.

Choi, S. Y.; Lee, E. S.; Lee, Kun J.; Kim, Su H.; Rim, C. T. [Korea Advanced Institute of Science and Technology, Daejeon (Korea, Republic of)

2013-05-15

351

Tethered Contactless Mobile Nuclear Environment Monitoring Robot  

International Nuclear Information System (INIS)

In fact, the nuclear environment monitoring is significantly crucial for early detection of NPP accident, radiological emergency, the estimation of radiation exposure to nearby residents as well as the long term radioactivity. In the UAE, the nuclear environment monitoring is, however, quite challenging because sampling locations are far from NPPs and the outdoor temperature and humidity are very high for NPP workers to collect soil, air, and water samples. Therefore, nuclear environment monitoring robots (Nubos) are strongly needed for the NPPs in the UAE. The Nubos can be remotely controlled to collect samples in extreme environment instead of NPP workers. Moreover, the Nubos can be unmanned ground vehicles (UGVs), unmanned aerial vehicles (UAVs) and unmanned marine vehicles (UMVs) to collect soil, air, and water samples, respectively. In this paper, the prototype development of UGV type Nubos using power cable for a long distance power delivery, called Tethered contactless mobile Nubo is introduced and validated by experiments. In this paper, the prototype development of Tethered Contactless Mobile (TeCoM) Nubo, which can be powered continuously within several km distance and avoid tangled cable, and the indoor test are finished. As further works, outdoor demonstration and a grand scale R and D proposal of practical Nubo will be proceeded

352

Barriers to Adoption of Mobile banking: Evidence from Ghana  

Directory of Open Access Journals (Sweden)

Full Text Available The purpose of this research is to investigate the perceived barriers to adoption of mobile banking among consumers, and to assess whether the usage of M-Banking is constraint on the basis of different demographic characteristics such as age, income level, mobile phone usage “experience” and marital status. Data were collected using convenient sampling via self-administered questionnaire in a large university in the Ashanti region of Ghana. A total of usable 189 responses were collected from non-users of mobile banking and retained for analysis using SPSS version 16. The main reasons for rejecting M-Banking were explored using simple descriptive analysis, while chi-square tests were used to assess differences between socio-demographic variables and the rejection factors. The result indicates that majority of respondents do not use any kind of mobile banking service. The four main reasons for rejecting M-Banking were: M-banking requires knowledge and learning; M-banking attract additional banking charges; poor telecommunication network; consumer preference for traditional means of banking instead of mobile enabled banking services. The practical implications of this research is the revealing of the main barriers to Mobile banking adoption and suggesting of appropriate marketing strategies to overcome the obstacles to mobile banking adoption.

Faisal Iddris

2013-07-01

353

Cooperative Caching Framework for Mobile Cloud Computing  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Due to the advancement in mobile devices and wireless networks mobile cloud computing, which combines mobile computing and cloud computing has gained momentum since 2009. The characteristics of mobile devices and wireless network makes the implementation of mobile cloud computing more complicated than for fixed clouds. This section lists some of the major issues in Mobile Cloud Computing. One of the key issues in mobile cloud computing is the end to end delay in servicing a ...

Joy, Preetha Theresa; Jacob, K. Poulose

2013-01-01

354

Technologies for learning? An actor-network theory critique of ‘affordances' in research on mobile learning  

Directory of Open Access Journals (Sweden)

Full Text Available How is the link between learner and technology made in mobile learning? Whatis the value of the concept of ‘affordances'? And how does research articulatingthis concept act to position mobile devices as ‘technologies for learning'? Thisliterature review used both unstructured and structured search samples of publishedresearch on mobile learning to critically evaluate the prevalence and influenceof the concept of the affordances of mobile technologies. Actor-networktheory is drawn on as a theoretical lens through which to critically considerhow this concept is articulated, and in particular to explore the way it positionsand controls mobile devices as technologies for learning. Parallels in contemporaryaccounts of mobile learning are drawn with classifications of previous discoursesaround the introduction of computers into schools. An alternativeagenda for mobile learning research is suggested with a focus on authentic andinformal contexts rather than controlled experiments.

Gale Parchoma

2011-12-01

355

Distributed Java Mobile Information System  

Directory of Open Access Journals (Sweden)

Full Text Available Technology is now everywhere; integrated into our everyday objects and activities. Mobile computers and devices are now widely affordable and powerful enough. Because of that, developments of mobile applications become a phenomenon today. Mobile applications could be used both to connect people with each other, and to link them with crucial data from almost anywhere in mobile manner. Since mobile devices come in a variety of purposes and properties and in different communication mechanisms, a portable software platform and a flexible and extensible networking supports need to be considered. Java, specifically Java Micro Edition (JME, is particularly an attractive development environment that suits the purpose. This paper discusses a research project of a Java-based smart mobile application. The application, a client/server based application, is designed using JME. It allows the built application to be deployed on any client devices and access to a large variety of network services on the server side. The open source database.

Ahmad Shukri Mohd Noor

2009-12-01

356

Mobility Models for Systems Evaluation  

Science.gov (United States)

Mobility models are used to simulate and evaluate the performance of mobile wireless systems and the algorithms and protocols at the basis of them. The definition of realistic mobility models is one of the most critical and, at the same time, difficult aspects of the simulation of applications and systems designed for mobile environments. There are essentially two possible types of mobility patterns that can be used to evaluate mobile network protocols and algorithms by means of simulations: traces and synthetic models [130]. Traces are obtained by means of measurements of deployed systems and usually consist of logs of connectivity or location information, whereas synthetic models are mathematical models, such as sets of equations, which try to capture the movement of the devices.

Musolesi, Mirco; Mascolo, Cecilia

357

Safe Driving Using Mobile Phones  

Directory of Open Access Journals (Sweden)

Full Text Available In present days mobile phones are plays most important role in every human life, but at the same time in driving of automobile, mobile phones using is the main reason for accidents of automobiles. This Paper is designed and implemented for Safe driving using mobile phones with ARM7 and GSM modules. The use of mobile phones affected driving in different ways. Drivers missed exits, failed to observe traffic signals, and forgot to adjust the speed according to the limit. It was not unusual with incidents or near collisions with other vehicles or objects, or driving off the road, when mobile phones were used while driving. So the driver compulsory take some kind of safety precaution in conjunction with a mobile phone call. By using this system those problems are maximum reduced and safely drive the automobile.

G.SRINIVASA RAO1 , B.PREMALATHA

2013-09-01

358

Mobile phones and cancer  

International Nuclear Information System (INIS)

This presentation was given at the Annual Conference of Engineering and Physical Sciences in Medicine (EPSM 2002) in New Zealand but no paper was written. The power point presentation summarises the status of the research carried our over the last decade on the biological effects of the RF radiation, including thermal and non-thermal effects, epidemiological and relevant laboratory studies. It is concluded that there is no real scientific evidence that mobile phones cause cancer. However, since definitive epidemiological studies may be impossible to do, it cannot be proved that a cancer connection is impossible. Copyright (2002) Australasian Radiation Protection Society Inc

359

Mobility Enhancement for Elderly  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Loss of Mobility is a common handicap to senior citizens. It denies them the ease of movement they would like to have like outdoor visits, movement in hospitals, social outgoings, but more seriously in the day to day in-house routine functions necessary for living etc. Trying to overcome this handicap by means of servant or domestic help and simple wheel chairs is not only costly in the long run, but forces the senior citizen to be at the mercy of sincerity of domestic helps...

Parasuraman, Ramviyas

2014-01-01

360

Big Dipper Mobile  

Science.gov (United States)

By building their own Big Dipper mobile, kids learn that the distance between stars is not what it appears to be in this OLogy activity. The activity directions are provided as both a Web page and a printable PDF. The activity begins with a brief overview about how the small size of stars and the close distance between them are illusions. Kids then create a replica of the Big Dipper which realistically shows the relative size and distance of the constellation's stars, allowing kids to view the Big Dipper as if they were in a spaceship looking at it from the side.

 
 
 
 
361

Wireless Cellular Mobile Communications  

Directory of Open Access Journals (Sweden)

Full Text Available In this article is briefly reviewed the history of wireless cellularmobile communications, examined the progress in current secondgeneration (2G cellular standards and discussed their migration to thethird generation (3G. The European 2G cellular standard GSM and itsevolution phases GPRS and EDGE are described somewhat in detail. Thethird generation standard UMTS taking up on GSM/GPRS core network andequipped with a new advanced access network on the basis of codedivision multiple access (CDMA is investigated too. A sketch of theperspective of mobile communication beyond 3G concludes this article.

V. Zalud

2002-12-01

362

Semantics in mobile sensing  

CERN Document Server

The dramatic progress of smartphone technologies has ushered in a new era of mobile sensing, where traditional wearable on-body sensors are being rapidly superseded by various embedded sensors in our smartphones. For example, a typical smartphone today, has at the very least a GPS, WiFi, Bluetooth, triaxial accelerometer, and gyroscope. Alongside, new accessories are emerging such as proximity, magnetometer, barometer, temperature, and pressure sensors. Even the default microphone can act as an acoustic sensor to track noise exposure for example. These sensors act as a ""lens"" to understand t

Yan, Zhixian

2014-01-01

363

Secure Mobile Trade Agent  

Directory of Open Access Journals (Sweden)

Full Text Available E-commerce on the internet has the ability to produce millions of transactions and a great number of merchants whose supply merchandise over the internet. As a result, it is difficult for entities to roam over every site on the internet and choose the best merchandise to trade. So, in this paper we introduced a mobile trade agent that visit the sites to gather and evaluate the information from merchant servers and decide to trade goods on behalf of the user. We observed that the combination of public key cryptosystem with distributed object technology make this proposed scheme more secure and efficient than the already existed schemes.

Musbah M. Aqe

2007-01-01

364

Forensics mobile devices  

Directory of Open Access Journals (Sweden)

Full Text Available The article gives an overview of possibilities of digitized mobile(portable devices, and methods of research data with them.Emphasis is placed on the forensic investigation of mobilephones, but are covered by other media and research for digitalprocessing, transmission and storage of information.A special emphasis was made on the software tools in carrying out the acquisition of digital data, with the aim of sending the reader on ways and methods to protect data but also knowledgewhich is the same all be found and how they can be misused for criminal purposes

Milorad S. Markagi?

2013-02-01

365

Mobile Education-proposing a Mobile Learning Model for Designing an Institutional Mobile Scenario  

Directory of Open Access Journals (Sweden)

Full Text Available Inspired by the theory of activity, the context model and previous researches, this paper proposes a model bringing together the key concepts of a mobile learning environment based on the concept of contextualization, major advantage of mobile learning. It details the learning mobile environment, its main components, its characteristics and the different interactions between them. The proposed model meets the constraint of mobile learning complementarity, allowing flexibility in its integration with classroom learning such as e-learning or blended learning. It mainly improves upon conventional learning methods and advocates others such as situated, interactive and connectivist learning. Indeed, research several that mobile learning enhances the educational program and reinstates it into the daily lives of learners through their own mobile technologies. Properly implemented, Mobile Learning can make learning activities as fun, as beneficial and certainly more motivating for learners and educators especially in the mobile era where traditional learning methods don’t meet all learners’ needs. Mobiles, connected and in constant social interaction, learners require learning systems more adapted to their communicative and interactive nature. This paper is an early implementation of this concept in learning systems. It aims to help educators to integrate mobile technologies into their learning activities without alternating their educational goals.

Ouiame Filali Marzouki

2014-05-01

366

Method of multiplexed analysis using ion mobility spectrometer  

Science.gov (United States)

A method for analyzing analytes from a sample introduced into a Spectrometer by generating a pseudo random sequence of a modulation bins, organizing each modulation bin as a series of submodulation bins, thereby forming an extended pseudo random sequence of submodulation bins, releasing the analytes in a series of analyte packets into a Spectrometer, thereby generating an unknown original ion signal vector, detecting the analytes at a detector, and characterizing the sample using the plurality of analyte signal subvectors. The method is advantageously applied to an Ion Mobility Spectrometer, and an Ion Mobility Spectrometer interfaced with a Time of Flight Mass Spectrometer.

Belov, Mikhail E. (Richland, WA); Smith, Richard D. (Richland, WA)

2009-06-02

367

Classification and Evaluation of Mobility Metrics for Mobility Model Movement Patterns in Mobile Ad-Hoc Networks  

Directory of Open Access Journals (Sweden)

Full Text Available A mobile ad hoc network is collection of self configuring and adaption of wireless link between communicating devices (mobile devices to form an arbitrary topology and multihop wireless connectivity without the use of existing infrastructure. It requires efficient dynamic routing protocol to determine the routes subsequent to a set of rules that enables two or more devices to communicate with each others. This paper basically classifies and evaluates the mobility metrics into two categories- direct mobility metrics and derived mobility metrics. These two mobility metrics has been used to measure different mobility models, this paper considers some of mobility models i.e Random Waypoint Model, Reference Point Group Mobility Model, Random Direction Mobility Model, Random Walk Mobility Model, Probabilistic Random Walk, Gauss Markov, Column Mobility Model, Nomadic Community Mobility Model and Manhattan Grid Model.

Santosh Kumar S

2011-10-01

368

Mobile Services and Network Proximity  

Digital Repository Infrastructure Vision for European Research (DRIVER)

This paper discusses several practical use cases for deploying network proximity in mobile services. Our research presents here mobile services oriented for either discovering new data for mobile subscribers or for delivering some customized information to them. All applications share the same approach and use the common platform, based on the Wi-Fi proximity. The typical deployment areas for our approach are context-aware services and ubiquitous computing applications. Our ...

Namiot, Dmitry; Sneps-sneppe, Manfred

2013-01-01

369

Mobile parking assistant in Ljubljana  

Digital Repository Infrastructure Vision for European Research (DRIVER)

With the development of smartphones, the use of mobile applications today already covers a lot of everyday life areas and also help us to solve our everyday problems. The objective of the thesis was to create a mobile application for the Android mobile platform, which would help the user in selecting the most suitable parking space. The application includes all public parking places in Ljubljana. At the beginning the Android operating system is presented and the individual component of Androi...

Volaric?, Rok

2012-01-01

370

Cross Platform Mobile Application Development  

Directory of Open Access Journals (Sweden)

Full Text Available Now a days mobiles are replacing the use of laptops &desktops on large scales. The mobile operating system companies provide more resources for the creation of applications as per the users requirement. But due the use of various operating system, it becomes problem for developer to develop the application for each operating system individually. So this has been solved by the cross platform mobile application development tool which provide more scope in less time.

Mrs. V.C. Kulloli#1 , Ashish Pohare#2 , Sujit Raskar#2 , Tania Bhattacharyya#2 , Shashikant Bhure

2013-05-01

371

Demonstration of a mobile NDA safeguards measurement system  

International Nuclear Information System (INIS)

Increasing use is being made of nondestructive assay instruments for identification and measurements of nuclear materials. Important advantages of NDA are: timeliness, portability, and ease of use. Recent developments in computer systems and NDA allow for the integration of sample planning, control of NDA, and data analysis into one transportable system. This session acquaints the course participants with the use of mobile NDA safeguards measurement systems. This session considers the practical problems and the type of results that can be expected from field use of NDA instruments. An existing mobile safeguards system will be used to demonstrate some of the differences between field and laboratory conditions. The purpose of the session is to enable participants to: (1) cite the advantages and disadvantages of a mobile NDA safeguards measurement system; (2) identify principal NDA instruments most applicable for use in a mobile system; and (3) identify selected modifications to NDA instruments for field use

372

Safe Driving Using Mobile Phones  

Digital Repository Infrastructure Vision for European Research (DRIVER)

In present days mobile phones are plays most important role in every human life, but at the same time in driving of automobile, mobile phones using is the main reason for accidents of automobiles. This Paper is designed and implemented for Safe driving using mobile phones with ARM7 and GSM modules. The use of mobile phones affected driving in different ways. Drivers missed exits, failed to observe traffic signals, and forgot to adjust the speed according to the limit. It was not unusual with ...

G Srinivasa Rao, B. Premalatha

2013-01-01

373

Nuclear powerplants for mobile applications.  

Science.gov (United States)

Mobile nuclear powerplants for applications other than large ships and submarines will require compact, lightweight reactors with especially stringent impact-safety design. This paper examines the technical and economic feasibility that the broadening role of civilian nuclear power, in general, (land-based nuclear electric generating plants and nuclear ships) can extend to lightweight, safe mobile nuclear powerplants. The paper discusses technical experience, identifies potential sources of technology for advanced concepts, cites the results of economic studies of mobile nuclear powerplants, and surveys future technical capabilities needed by examining the current use and projected needs for vehicles, machines, and habitats that could effectively use mobile nuclear reactor powerplants.

Anderson, J. L.

1972-01-01

374

BILATERAL TELEOPERATED WHEELED MOBILE ROBOT  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The thesis describes a bilateral teleoperated wheeled mobile robot using an active joystick. The joystick is used to remote control the speed of the mobile robot and as the haptic interface. When the mobile robot has contact with an object from his environment, then the joystick reproduces the force of the contact. This is not a physical contact of the mobile robot with an environment. On the robot we measure a distance from the robot to the object in the surrounding area. This distance is th...

Puc?ko, Rok

2011-01-01

375

Spiderweb : A Social Mobile Network  

DEFF Research Database (Denmark)

Social networking sites obtained a great success in the last years. Their popularity is related to changing lifestyles, where people increasingly look for new acquaintances or cultivate old friendships by means of the Internet, typically using a PC. Yet along with the rapidly increasing amount of mobile phone users, as well as the development of so-called smart phones, the possibility for creating similar services for mobiles arises. Importantly, the mobile phones are not just entry points to existing social networks with their centralized architectures; being mobile offers one more degree of freedom. However, mobile social network services are unquestionably limited by mobile phones weaknesses (e.g. small screen, keyboards), so several challenges are necessary to be addressed. Consequently, in this paper we analyze usability and user satisfaction of mobile social networks. Thus, a mobile social network application called Spiderweb is implemented and used as a test case. Spiderweb provides to the users an opportunity to make acquaintances, search for people on the basis of certain criteria, chat, view profiles of other users, and with numerous other possibilities. Yet the application not only offers the mobile phone users services similar to social networks available on the web. Spiderweb moves beyond this concept, also giving an opportunity to interact with other users through Bluetooth connectivity. Thus, the application enables establishment of spontaneous collaborative networks which are further explored and evaluated in this paper.

Sapuppo, Antonio

2010-01-01

376

Mobile collaborative medical display system.  

Science.gov (United States)

Because of recent advances in wireless communication technologies, the world of mobile computing is flourishing with a variety of applications. In this study, we present an integrated architecture for a personal digital assistant (PDA)-based mobile medical display system that supports collaborative work between remote users. We aim to develop a system that enables users in different regions to share a working environment for collaborative visualization with the potential for exploring huge medical datasets. Our system consists of three major components: mobile client, gateway, and parallel rendering server. The mobile client serves as a front end and enables users to choose the visualization and control parameters interactively and cooperatively. The gateway handles requests and responses between mobile clients and the rendering server for efficient communication. Through the gateway, it is possible to share working environments between users, allowing them to work together in computer supported cooperative work (CSCW) mode. Finally, the parallel rendering server is responsible for performing heavy visualization tasks. Our experience indicates that some features currently available to our mobile clients for collaborative scientific visualization are limited due to the poor performance of mobile devices and the low bandwidth of wireless connections. However, as mobile devices and wireless network systems are experiencing considerable elevation in their capabilities, we believe that our methodology will be utilized effectively in building quite responsive, useful mobile collaborative medical systems in the very near future. PMID:18177976

Park, Sanghun; Kim, Wontae; Ihm, Insung

2008-03-01

377

Combine mobile monitoring conception  

Energy Technology Data Exchange (ETDEWEB)

This work is a document of joint final report of the collaboration between CHESCIR and JAERI on the Subject-1 'A Study on the Measurements and Evaluation of External Dose after Nuclear Accident' of JCP-1 project 'A Study on the Assessment, Analysis and Verification of the Consequences of the accident at Chernobyl' in the framework of the Agreement between JAERI and RIA 'PRIPYAT' (since 1994, CHESCIR) for 1995-1999. The most substantial part of the collaboration was research with using mobile gamma survey system, that was developed in JAERI and equipped with GIS - navigator that was developed in CHESCIR. During collaboration the carbone survey on the network of roads covered most are contaminated by Chernobyl fallout in Ukraine, Belorussia and Russia. Routes of carbone survey, carried out by CHESCIR team together with JAERI and alone for the last 5 years are shown in a non-complete map. Length of all routes taking into considers double raids is longer than 18,000 km. Experimental and methodological experience of mobile monitoring that collected by both sides allows to make considerations and conclusions, which are available in this final report. (J.P.N.)

Stolyarevsky, I.; Ivanov, J.A.; Arkhipov, N. [Chernobyl Scientific and Technical Center for International Researches (CHESCIR) (Ukraine)] [and others

2001-03-01

378

Intelligent mobile robots  

International Nuclear Information System (INIS)

For the purpose of the application to remote working apparatuses in nuclear power plants and others, the software and moving mechanism of mobile robots that automatically accomplish the movement by only specifying the destination were manufactured for trial. The software has the function of searching a path to determine the quasi-shortest path and the function of controlling execution to control the action of the robots and guide to the destination. By taking heuristics into the method of searching a path and utilizing ultrasonic waves for the function of sight as they can easily detect distance though the information quantity is small, the execution was accelerated. By the simulation examination and the experiment using a mobile apparatus made for trial, it was confirmed that the route plan was able to be made almost in real time, and the appearance of an unknown obstacle was detected before collision and able to be reasonably avoided by the revision of the plan. An environment model, a route planner, the program for controlling execution, the makeup and control of moving function and the experiment on the movement are reported. The shortening of the processing time by dealing with unconfirmed echo and simplifying the writing in a map is a future problem. (Kako, I.)

379

Are we aware how contaminated our mobile phones with nosocomial pathogens?  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Abstract Background The objective of this study was to determine the contamination rate of the healthcare workers' (HCWs') mobile phones and hands in operating room and ICU. Microorganisms from HCWs' hands could be transferred to the surfaces of the mobile phones during their use. Methods 200 HCWs were screened; samples from the hands of 200 participants and 200 mobile phones were cultured. Results In total, 94.5% of phones demonstrated evidence of...

Ulger Fatma; Esen Saban; Dilek Ahmet; Yanik Keramettin; Gunaydin Murat; Leblebicioglu Hakan

2009-01-01

380

Recruitment using mobile telephones in an Irish general population sexual health survey: challenges and practical solutions  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Abstract Background Non-coverage of households without a landline telephone is a major concern of telephone survey researchers. Sampling mobile telephone users in national surveys is vital in order to gain access to the growing proportion of households that use mobile telephones extensively or exclusively. The complex logistics of conducting surveys with mobile telephones have been discussed in the literature. This paper outlines the actual challenges encountered during a rec...

McBride Orla; Morgan Karen; McGee Hannah

2012-01-01

 
 
 
 
381

Elastic Calculator : A Mobile Application for windows mobile using Mobile Cloud Services  

Directory of Open Access Journals (Sweden)

Full Text Available Cloud computing is highly significant in this era as it always shows a way to increase the capacity or to add an additional features on the go and also it is worthy to extend these services to mobiledevices. It is proposed to design and implement Elastic Calculator for mobile cloud services with virtual machines. The system comprises of a flexible application that was developed partly on own machine andpartly on the cloud. Application is developed in two parts, with the front end and user interface at the mobile device and all the execution part is moved to the server running on the cloud. At runtime, the process execution is suspended at the mobile device and migrated from mobile device at a particular point to the cloud to perform all the computation and is later re-integrated back to the mobile device. This technique helps applications in achieving high processing efficiency with reduced energy on the mobile devices.

K.Lakshmi Narayanan

2013-06-01

382

The Future of Mobile Technology and Mobile Wireless Computing  

Science.gov (United States)

It is often stated that mobile wireless computing is going to be the next big technology revolution that will grip the world in the same way mobile telephones did in the 1990s. However, while the technology is rapidly improving, the rate of uptake has been lower than expected. This paper describes some of the reasons for this, and discusses some…

Hart, Jim; Hannan, Mike

2004-01-01

383

The Microbial Colonisation of Mobile Phone Used by Healthcare Staffs  

Directory of Open Access Journals (Sweden)

Full Text Available Mobile phones are dispensable accessories in social life and normally they are not cleaned properly. Therefore, they serve as a reservoir of bacteria and may cause nosocomial infections in hospitals. The purpose of this study was to investigate microbiological colonization of mobile phones used by healthcare staffs. The study was carried out collecting swab samples with Cary-Blair transport medium from mobile phones of attending healthcare staffs from different departments of three hospitals in March, 2008. All collected samples were inoculated in 5% sheep blood agar, eosin-methylene blue agar and Sabouraud Dextrose agar. Isolated bacteria were identified using by classic technique and Vitec2 (Biomerieux, France full automated bacteria identification system. Growth was observed in 65 of collected 106 samples, corresponding to 61.3%. The most frequent bacteria were Staphylococcus epidermidis followed by Staphylococcus aureus, Bacillus sp., Corynebacterium sp. and Escherichia coli, respectively. In conclusion, bacteria were colonized on mobile phones frequently and mobile phones may become reservoir of microorganism for nosocomial infections.

I.H. Kilic

2009-01-01

384

Geochemical investigation of the potential for mobilizing non-methane hydrocarbons during carbon dioxide storage in deep coal beds  

Science.gov (United States)

Coal samples of different rank (lignite to anthracite) were extracted in the laboratory with supercritical CO2 (40 ??C; 10 MPa) to evaluate the potential for mobilizing non-methane hydrocarbons during CO2 storage (sequestration) or enhanced coal bed methane recovery from deep (???1-km depth) coal beds. The total measured alkane concentrations mobilized from the coal samples ranged from 3.0 to 64 g tonne-1 of dry coal. The highest alkane concentration was measured in the lignite sample extract; the lowest was measured in the anthracite sample extract. Substantial concentrations of polycyclic aromatic hydrocarbons (PAHs) were also mobilized from these samples: 3.1 - 91 g tonne-1 of dry coal. The greatest amounts of PAHs were mobilized from the high-volatile bituminous coal samples. The distributions of aliphatic and aromatic hydrocarbons mobilized from the coal samples also varied with rank. In general, these variations mimicked the chemical changes that occur with increasing degrees of coalification and thermal maturation. For example, the amount of PAHs mobilized from coal samples paralleled the general trend of bitumen formation with increasing coal rank. The coal samples yielded hydrocarbons during consecutive extractions with supercritical CO2, although the amount of hydrocarbons mobilized declined with each successive extraction. These results demonstrate that the potential for supercritical CO2 to mobilize non-methane hydrocarbons from coal beds, and the effect of coal rank on this process, are important to consider when evaluating deep coal beds for CO2 storage.

Kolak, J.J.; Burruss, R.C.

2006-01-01

385

A Mobile IPv6 based Distributed Mobility Management Mechanism of Mobile Internet  

Science.gov (United States)

A flatter architecture is one of the trends of mobile Internet. Traditional centralized mobility management mechanism faces the challenges such as scalability and UE reachability. A MIPv6 based distributed mobility management mechanism is proposed in this paper. Some important network entities and signaling procedures are defined. UE reachability is also considered in this paper through extension to DNS servers. Simulation results show that the proposed approach can overcome the scalability problem of the centralized scheme.

Yan, Shi; Jiayin, Cheng; Shanzhi, Chen

386

Usage of Mobile Features among Undergraduates and Mobile Learning  

Directory of Open Access Journals (Sweden)

Full Text Available This study explores the gender differences in the usage of mobile features and the possibilities for implementing mobile learning among undergraduate students. A total of 351 undergraduate students participated in the study. Quantitative survey method was used to analyze the data. The study is organized into two sections. Firstly, provides the data results. Secondly, describes the features that can be used for mobile learning. The information obtained from this study will provide a baseline understanding of the usage of mobile technology among territory students in Malaysia. The results reveal no significant differences among female and male students. Furthermore, the study shows how mobile features can be used as reinforcement in the learning community.

Manimekalai Jambulingam

2013-07-01

387

CONSUMERS’ ATTITUDES TOWARDS MOBILE MARKETING AND MOBILE COMMERCE IN CONSUMER MARKETS  

Directory of Open Access Journals (Sweden)

Full Text Available Advances in information and communication technologies are not only offering new marketing channels to companies but also significantly influencing the ways in which companies conduct their businesses and marketing activities. This paper analyses the possible significant impacts of mobile phone technology developments on marketing, and offers insights into mobile commerce and mobile marketing, which have not previously been investigated in Turkey. In the survey, mobile phone users’ attitudes towards mobile commerce and mobile marketing and their intentions to benefit from mobile phones are searched. The empirical results show that the mobile phone users’ adoption of mobile shopping is low, and apart from mobile shopping, mobile phone users have positive attitudes towards mobile advertising, entertainment, discount coupons and mobile marketing. Moreover, the demographics characteristics (age, income, occupation and employment of mobile phone users who have more positive attitudes towards mobile marketing tools are determined and managerial implications and recommendations are also given to increase mobile commerce and marketing adoption rates.

Süleyman BARUTÇU

2008-01-01

388

Mobile-to-Mobile Multimedia Service Provisioning in the IMS Using REST-Based Mobile Services  

Directory of Open Access Journals (Sweden)

Full Text Available With the merging of IP and TelCo networks, Mobile-to-Mobile (M2M social networks are to be unfolded as an ultimate telecom business in the near future. By M2M, both service provider and service client are aimed to be mobile based. Hence considering mobile devices to be resource constrained and mobile networks as low-bandwidth networks, provisioning high-profile multimedia services is not somewhat straight forward. The Quality of Service (QoS has always been a great concern in this scenario. Additionally in M2M service networks, the direct IP accessibility of mobile devices is a bottleneck in seamless communication. The cellular operators typically block every incoming http access to subscribers devices inside and outside the network due to huge traffic load and security reasons. The paper addresses the issues faced in M2M service networks and presents a solution based on the IP Multimedia Subsystem (IMS. Similar to SIP Application Servers (AS in the IMS network, the concept of Mobile Application Servers (Mob-AS is introduced in order to host and execute multimedia services from a mobile device. A comprehensive design of Mob-AS is presented based on the existing REST interfaced synchronous and asynchronous mobile server framework.

Muzzamil Aziz Chaudhary

2013-07-01

389

The concept of "Mobile sky"  

Directory of Open Access Journals (Sweden)

Full Text Available  The navigation and control for light aviation based on mobile communication service in the bottom airspace have been proposed. The main principles of “Mobile sky” conception have been formulated and grounded. In the paper have been represented the main advantages for use this conception in Ukraine.

?.?. ?????????

2009-03-01

390

Mobile communications data services marketing  

Directory of Open Access Journals (Sweden)

Full Text Available Increasing revenue per user is very important for mobile operators because of shrinking growth from mobile voice services on a number of markets. At the same time, a more powerful platform enabling advanced mobile data services has emerged. Therefore, mobile data services offer great possibilities to operators in the future. Marketing plays the key role in offering new and existing data services. Experiences in launching various services, primarily a comparison of Japanese and other experiences, shows that different strategies and marketing mix employed in launching data services can lead to different business results in this area. The needs and preferences of Croatian mobile users are explored in this paper, especially in the following areas: the most used and potentially most interesting data services, a preferred way of paying for these services, the importance of transaction security in mobile payments and a comparison of the use of and interest in such services by users with more advanced mobile terminals and those with older mobile phones. Results imply that a strong and attractive presence of these services in the media is crucial to success. It is also important to communicate clearly the benefits of these services, along with lower prices (or promotional periods as well as easy activation and use. Last but not least: the existence of attractive content and applications (where fair arrangements among all providers of these services is the main prerequisite is essential for a faster adoption and use of these services.

Stanislav Maruši?

2006-12-01

391

Social Properties of Mobile Video  

Science.gov (United States)

Mobile video is now an everyday possibility with a wide array of commercially available devices, services, and content. These new technologies have created dramatic shifts in the way video-based media can be produced, consumed, and delivered by people beyond the familiar behaviors associated with fixed TV and video technologies. Such technology revolutions change the way users behave and change their expectations in regards to their mobile video experiences. Building upon earlier studies of mobile video, this paper reports on a study using diary techniques and ethnographic interviews to better understand how people are using commercially available mobile video technologies in their everyday lives. Drawing on reported episodes of mobile video behavior, the study identifies the social motivations and values underpinning these behaviors that help characterize mobile video consumption beyond the simplistic notion of viewing video only to kill time. This paper also discusses the significance of user-generated content and the usage of video in social communities through the description of two mobile video technology services that allow users to create and share content. Implications for adoption and design of mobile video technologies and services are discussed as well.

Mitchell, April Slayden; O'Hara, Kenton; Vorbau, Alex

392

Mobile Technology and Liberal Education  

Science.gov (United States)

In this article, the author offers reflections on the impact of mobile technology for liberal education. These reflections are based on his own experience of incorporating iPads in his communication courses during the 2010-2011 academic year. As a member of an interdisciplinary faculty learning community on the use of mobile tablets, he explored…

Rossing, Jonathan P.

2012-01-01

393

HTML5 Mobile Development Cookbook  

CERN Document Server

The book is written in a cookbook style, presenting examples in the style of recipes, allowing you to go directly to your topic of interest, or follow topics throughout a chapter to gain in-depth knowledge. Developers keen to create HTML5 mobile websites that are fast and responsive across a whole range of mobile devices.

Chuan, Shi

2012-01-01

394

Education & Mobility. CEE DP 100  

Science.gov (United States)

Regional labour mobility has long been viewed as a crucial component in the functioning of the labour markets of different countries. Indeed, the study of regional labour mobility has moved towards the top of the research agenda, especially in Europe, where regional unemployment differentials have been persistently larger than in the United…

Machin, Stephen; Pelkonen, Panu; Salvanes, Kjell G.

2008-01-01

395

The mobile bluff at hospitals  

International Nuclear Information System (INIS)

The article discusses interference problems of mobile telephones and other electromagnetic pollution sources with medical equipment in Norwegian hospitals. Studies show that significant interference from mobile phones may not be registered before the distance between the appliances are about 2 cm

396

Mobile Health 2010  

Science.gov (United States)

Mobile phone applications (or "apps") and their use in the world of healthcare information is the subject of this recent report from the Pew Research Center's Internet & American Life Project. Authored by associate director Susannah Fox, this 15-page report was released in October 2010, and it looks at how different cell phone users use their phones to look up health or medical information. The report was based on interviews conducted between August 9th and September 13th, 2010 with 1000 participants. Visitors who read the report will learn that 17% of all cell owners have used their phone to look up health or related medical information, and that 9% of cell owners have "apps" that help them track or manage their health. Additionally, the report contains detailed tables and graphs, along with demographic details that are helpful for those who require a more detailed portrait.

397

Mobile Supercompaction service  

International Nuclear Information System (INIS)

A mobile compaction service for processing dry active waste (DAW) using a high force supercompactor called ''Superpack'' was started up in the last quarter 1985. The 2200 ton press makes it possible to compact many types of waste previously considered uncompactible (i.e., wood, pipe, valve bodies, and other metallic items). With this capability, it is not necessary to segregate waste, thus reducing the need for procedural controls on packaging. The high volume reduction factor achieved by Supercompaction will result in reduction in burial costs and savings in valuable burial site allocation space or site storage needs. This paper addresses recent changes in regulations, the need for clearly cost effective methods of volume reduction, and the need to minimize burial site allocation needs. In addition, the design of the press and the hydraulic control system are covered along with the startup experience

398

Mobile inspection robot development  

International Nuclear Information System (INIS)

Recently, varied development work on automatic and remote-controlled equipment or apparatus such as robots has been carried out in order to reduce radiation exposures and to save on personnel time in nuclear facilities. A mobile inspection robot has been developed that is capable of moving along the floor, mainly for improving nuclear facility or components inspection during operation. The inspection robot has been developed for use in the primary containment vessel where the environmental conditions are those of relatively high humidity and temperatures (maximum 100%, 700C) and high radiation dose rates (of approx.100 R/h). The inspection robot consists of: a vehicle that moves along the floor with four crawlers; a multijoint arm mechanism for observation sensors; a mutual signal transmission circuit; a cable-handling device; and a computer system for both remote manual and automatic operation

399

Mobile Remote Control Architecture  

Directory of Open Access Journals (Sweden)

Full Text Available When mobile device become more and more popular the need to have a software bridge between them and the old fashioned computers became evident. Many different solutions have appeared to fill the void but few offer more than file sinking or remote SSH (secure shell connections. For computer professionals and other alike a tool that can do more regarding this connectivity and control gap became necessary. With this paper it is described an architecture and an implementation for creating such a system, underlining the difficulties, challenges and the many choices regarding overall system design, security and implementation that need to be made in order to provide the user with a secure, reliable and professional solution.

George Stefan Bogdan

2012-03-01

400

Sampling Theory: From Shannon Sampling Theorem to Compressing Sampling  

Directory of Open Access Journals (Sweden)

Full Text Available It is known that sampling theory lies at the heart of signal processing devices and communication systems. This study presents an account of the current state of sampling theorem after Shannon’s formulation of the sampling theorem. Our emphasis is on some new tends of sampling theory in recent decade. At first, the problem of vector sampling expansion is argued. Secondly, signal reconstruction from local averages is showed. Thirdly, the issue of sampling theorem in the wavelet subspaces is investigated and some results are given. At last, compressed sampling and its two principles are reviewed.

Yang Xiaohui

2010-01-01

 
 
 
 
401

Helium mobility in advanced nuclear ceramics  

Science.gov (United States)

The techniques of ion implantation and nuclear reaction depth profiling are used to measure helium migration parameters under thermal ageing in advanced nuclear ceramics such as TiC, ZrC and TiN. Helium release measurements and activation energy calculations have been carried out in the temperature range of 1000-1600 °C for time periods of 2 h. Activation energy values are obtained in the range 0.7-1.2 eV. Due to rare availability of stoichiometric samples, the trapping of He in native vacancies seems to affect the mobility of He. Blisters are observed only at the surface of ZrC on thermal annealing.

Agarwal, S.; Trocellier, P.; Serruys, Y.; Vaubaillon, S.; Miro, S.

2014-05-01

402

Spatiotemporal features of human mobility  

CERN Document Server

The individual movements of large numbers of people are important in many contexts, from urban planning to disease spreading. Datasets that capture human mobility are now available and many interesting features have been discovered, including the ultra-slow spatial growth of individual mobility. However, the detailed substructures and spatiotemporal flows of mobility-the sets and sequences of visited locations-have not been well studied. We show that individual mobility is dominated by small groups of frequently visited, dynamically close locations, forming primary "habitats" capturing typical daily activity, along with subsidiary habitats representing additional travel. These habitats do not correspond to typical contexts such as home or work. The temporal evolution of mobility within habitats, which constitutes most motion, is universal across habitats and exhibits scaling patterns both distinct from all previous observations and unpredicted by current models. The delay to enter subsidiary habitats is a pri...

Bagrow, James P

2012-01-01

403

WEB SERVICES FOR MOBILE COMPUTING  

Directory of Open Access Journals (Sweden)

Full Text Available In todays day to day life,mobile users are becoming popular clients to consume any type of web resources such as web service. However, there are problems in connecting mobile devices to existing WS. This paper focuses on three of the following challenge : time and speed,bandwidth/latency,limited resources. This paper implements and developes a cross-platform architecture for connecting mobile devices to the WS. The architecture includes a platform independent design of mobile client and a middleware for enhancing the communication between mobile clients and WS. Finally, the middleware can be deployed on Cloud Platforms, like Google App Engine and Amazon EC2, to enhance the scalability and reliability. The experiments evaluate the optimization/adaptation, overhead of the middleware.

Piyush M.Patil , Kushal Gohil, Rohit Madhavi

2012-05-01

404

Nahrain Mobile Learning System (NMLS  

Directory of Open Access Journals (Sweden)

Full Text Available The work in this paper involves the planning, design and implementation of a mobile learning system called Nahrain Mobile Learning System (NMLS. This system provides complete teaching resources, which can be accessed by the students, instructors and administrators through the mobile phones. It presents a viable alternative to Electronic learning. It focuses on the mobility and flexibility of the learning practice, and emphasizes the interaction between the learner and learning content. System users are categorized into three categories: administrators, instructors and students. Different learning activities can be carried out throughout the system, offering necessary communication tools to allow the users to communicate with each other through forums, SMS and e-mails. NMLS platform is based on 3G mobile phone technology and adopted WAP as a solution for the system platform. The NMLS framework is based on three layers, which are presentation layer, business logic layer and data layer.

Mumtaz AL-Mukhtar

2011-01-01

405

7 CFR 1755.509 - Mobile homes.  

Science.gov (United States)

...2010-01-01 2010-01-01 false Mobile homes. 1755.509 Section 1755...STANDARD CONTRACT FORMS § 1755.509 Mobile homes. (a) Customer access location installations at mobile homes shall be treated the same...

2010-01-01

406

39 CFR 777.26 - Mobile homes.  

Science.gov (United States)

...2010-07-01 2010-07-01 false Mobile homes. 777.26 Section 777...Relocation Assistance § 777.26 Mobile homes. (a) Moving Expenses. Displaced persons who are occupants of mobile homes are eligible for moving...

2010-07-01

407

77 FR 41331 - Commercial Mobile Alert System  

Science.gov (United States)

...07-287; FCC 08-164] Commercial Mobile Alert System AGENCY: Federal Communications...associated with the Commission's Commercial Mobile Alert System (CMS), Second Report and...requirements relating to the Commercial Mobile Alert System rules contained in the...

2012-07-13

408

39 CFR 777.26 - Mobile homes.  

Science.gov (United States)

...24 (b) or (e) with regard to the mobile home and to benefits as a tenant under...5,250. (c) Special Rules for Mobile Homes. (1) In computing replacement housing payments for mobile home owners under paragraph (b)...

2010-07-01

409

Energy optimization in mobile sensor networks  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Mobile sensor networks are considered to consist of a network of mobile robots, each of which has computation, communication and sensing capabilities. Energy efficiency is a critical issue in mobile sensor networks, especially when mobility (i.e., locomotion control), routing (i.e., communications) and sensing are unique characteristics of mobile robots for energy optimization. This thesis focuses on the problem of energy optimization of mobile robotic sensor networks, and the research result...

Yu, Shengwei

2013-01-01

410

MOODLE MOBILE-GRADER APPLICATION ON ANDROID  

Digital Repository Infrastructure Vision for European Research (DRIVER)

In this thesis, we have demonstrated a solution how to implement a mobile assessment of students in learning system Moodle on Android mobile devices. We have presented a brief historical development of mobile telephony and some of the major mobile operating systems. The Android system, SQLite database, mobile communications, internet services and learning system Moodle are described in detail. At the end, we have demonstrated the use of the given mobile application.

Kriz?anec, Bojan

2012-01-01

411

Mobile Learning System based on Cloud Computing  

Digital Repository Infrastructure Vision for European Research (DRIVER)

With the mass popularity of 3G, WIFI wireless network and intelligent mobile terminal equipment (intelligent mobile phone, tablet computer, etc), mobile learning has become one of the important ways of learning. but the traditional mobile learning mode has many disadvantages, and the mobile learning based on cloud computing is a good way to overcome the disadvantages. This paper first introduces the concept and system architecture of cloud computing, then designs a structure of mobile learnin...

Meilian Chen; Yan Ma; Yikun Liu; Fan Jia; Yanhui Ran; Jie Wang

2013-01-01

412

Model for mobile payment of lottery tickets  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Mobile and wireless technology is developing extremely fast, and highly developed mobile phones are becoming more accessible price-wise. At the same time there is an increase in the use of mobile phones for sending short text messages, internet browsing, shopping etc. Mobile business and mobile payments are gaining importance, the latter focusing on speed, safety and simplicity. A lot has already been done in the field of mobile infrastructure, since it has already been established as well as...

Zorman, Polona

2011-01-01

413

Einsatz mobiler Technologie zur Unterstützung von Geschäftsprozessen  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Recently, companies start realizing the necessity to equip their mobile workforce with a mobile solution. But this is not enough to integrate the mobile workforce into the business process. Therefore it is necessary to find for each mobile employee a mobile solution that supports his/her whole range of activities of work. To use the new potential efficiently, a Business Process Reengineering (BPR) is essential. This can be supported by use of the “Mobility-M” that was developed exclusivel...

Pousttchi, Key; Thurnher, Bettina

2006-01-01

414

Ubiquitous Mobility with Mobile Phones: A Cultural Ecology for Mobile Learning  

Science.gov (United States)

This article argues that mobile phones should be viewed as new cultural resources that operate within an individualized, mobile and convergent mass communication; such a recognition facilitates the options for a cultural ecology. A particular challenge here is to find adequate curricular functions in school where the inclusion of these new…

Cook, John; Pachler, Norbert; Bachmair, Ben

2011-01-01

415

Mobile wireless sensor network architecture: Applications to mobile sensor deployment  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Les progrès de la robotique mobile nous permettent aujourd'hui d'ajouter la notion de mobilité dans plusieurs classes de réseaux de capteurs sans fil. Le déploiement de capteurs mobiles est possible et utile dans de nombreuses applications, comme la surveillance de l'environnement, les applications dans l'industrie, dans la santé et le domaine militaire. Le terme robot mobile peut représenter n'importe quel type de robot avec la capacité de modifier sa position. Cette notion inclut une...

Erdelj, Milan

2013-01-01

416

Using Mobile Phone Diaries to Explore Children's Everyday Lives  

Science.gov (United States)

This article describes a novel approach to experience sampling as a response to the challenges of researching the everyday lives of young children at home. Parents from 11 families used mobile phones to send the research team combined picture and text messages to provide "experience snapshots" of their child's activities six times on each of three…

Plowman, Lydia; Stevenson, Olivia

2012-01-01

417

Dimensions and Issues of Mobile Agent Technology  

Directory of Open Access Journals (Sweden)

Full Text Available Mobile Agent is a type of software system which acts “intelligently” on one’s behalf with the feature ofautonomy, learning ability and most importantly mobility. Now mobile agents are gaining interest in theresearch community. In this article mobile agents will be addressed as tools for mobile computing. Mobileagents have been used in applications ranging from network management to information management. Wepresent mobile agent concept, characteristics, classification, need, applications and technical constraints inthe mobile technology. We also provide a brief case study about how mobile agent is used for informationretrieval

Yashpal Singh

2012-10-01

418

HTTP BASED STREAMMING ON MOBILE DEVICE  

Directory of Open Access Journals (Sweden)

Full Text Available In this paper, we have explain the HTTPBased Streaming on Mobile node in the field of Mobile Computing. It also suggests various technologies in the field of Mobile computing to help and to integrate to develop a Mobile Augmentation Technology. In this paper We are using the pt of Mobile Augmentation Architecture and also Develop and implement a mobile Augmentation Streaming Media algorithm. We have implemented Streaming Algorithm for Image and Video Using J2ME Platform. concept of Mobile Augmentation Architecture and also Develop and implement a mobile Augmentation Streaming Media algorithm. We have implemented Streaming Algorithm for Image and Video Using J2ME Platform.

VIJAYSINH K.JADEJA AND NOOR MOHAMMED

2012-11-01

419

Mobile Phone Tracking & Positioning Techniques  

Directory of Open Access Journals (Sweden)

Full Text Available Mobile positioning technology has become an important area of research, for emergency as well as for commercial services. Mobile positioning in cellular networks will provide several services such as, locating stolen mobiles, emergency calls, different billing tariffs depending on where the call is originated, and methods to predict the user movement inside a region. The evolution to location-dependent services and applications in wireless systems continues to require the development of more accurate and reliable mobile positioning technologies. The major challenge to accurate location estimation is in creating techniques that yield acceptable performance when the direct path from the transmitter to the receiver is intermittently blocked. This is the Non-Line-Of-Sight (NLOS problem, and it is known to be a major source of error since it systematically causes mobile to appear farther away from the base station (BS than it actually is, thereby increasing the positioning error. In this paper, we present a simple method for mobile telephone tracking and positioning with high accuracy. Through this we will discuss some technology used for mobile positioning and tracking.

LAXMANA SIRIDHARA ARIGELA

2013-04-01

420

Framework for Mobile Payments Integration  

DEFF Research Database (Denmark)

This paper derives a theoretical framework for consideration of both the technologically driven dimensions of mobile payment solutions, and the associated value proposition for customers. Banks promote traditional payment instruments whose value proposition is the management of risk for both consumers and merchants. These instruments are centralised, costly and lack decision support functionality. The ubiquity of the mobile phone has provided a decentralised platform for managing payment processes in a new way, but the value proposition for customers has yet to be elaborated clearly. This inertia has stalled the design of sustainable revenue models for a mobile payments ecosystem. Merchants and consumers in the meantime are being seduced by the convenience of on?line and mobile payment solutions. Adopting the purchase and payment process as the unit of analysis, the current mobile payment landscape is reviewed with respect to the creation and consumption of customer value. From this analysis, a framework is derived juxtaposing customer value, related to what is being paid for, with payment integration, related to how payments are being made. The framework provides a theoretical and practical basis for considering the contribution of mobile technologies to the payment industry. The framework is then used to describe the components of a mobile payments pilot project being run on a trial population of 250 students on a campus in Ireland. In this manner, weaknesses in the value proposition for consumers and merchants were highlighted. Limitations of the framework as a research tool are also discussed.

Carton, Fergal; Hedman, Jonas

2012-01-01

 
 
 
 
421

Mobile Phone Based Clinical Microscopy for Global Health Applications  

Science.gov (United States)

Light microscopy provides a simple, cost-effective, and vital method for the diagnosis and screening of hematologic and infectious diseases. In many regions of the world, however, the required equipment is either unavailable or insufficiently portable, and operators may not possess adequate training to make full use of the images obtained. Counterintuitively, these same regions are often well served by mobile phone networks, suggesting the possibility of leveraging portable, camera-enabled mobile phones for diagnostic imaging and telemedicine. Toward this end we have built a mobile phone-mounted light microscope and demonstrated its potential for clinical use by imaging P. falciparum-infected and sickle red blood cells in brightfield and M. tuberculosis-infected sputum samples in fluorescence with LED excitation. In all cases resolution exceeded that necessary to detect blood cell and microorganism morphology, and with the tuberculosis samples we took further advantage of the digitized images to demonstrate automated bacillus counting via image analysis software. We expect such a telemedicine system for global healthcare via mobile phone – offering inexpensive brightfield and fluorescence microscopy integrated with automated image analysis – to provide an important tool for disease diagnosis and screening, particularly in the developing world and rural areas where laboratory facilities are scarce but mobile phone infrastructure is extensive. PMID:19623251

Switz, Neil A.; Lam, Wilbur A.; Fletcher, Daniel A.

2009-01-01

422

Mobile phone based clinical microscopy for global health applications.  

Science.gov (United States)

Light microscopy provides a simple, cost-effective, and vital method for the diagnosis and screening of hematologic and infectious diseases. In many regions of the world, however, the required equipment is either unavailable or insufficiently portable, and operators may not possess adequate training to make full use of the images obtained. Counterintuitively, these same regions are often well served by mobile phone networks, suggesting the possibility of leveraging portable, camera-enabled mobile phones for diagnostic imaging and telemedicine. Toward this end we have built a mobile phone-mounted light microscope and demonstrated its potential for clinical use by imaging P. falciparum-infected and sickle red blood cells in brightfield and M. tuberculosis-infected sputum samples in fluorescence with LED excitation. In all cases resolution exceeded that necessary to detect blood cell and microorganism morphology, and with the tuberculosis samples we took further advantage of the digitized images to demonstrate automated bacillus counting via image analysis software. We expect such a telemedicine system for global healthcare via mobile phone -- offering inexpensive brightfield and fluorescence microscopy integrated with automated image analysis -- to provide an important tool for disease diagnosis and screening, particularly in the developing world and rural areas where laboratory facilities are scarce but mobile phone infrastructure is extensive. PMID:19623251

Breslauer, David N; Maamari, Robi N; Switz, Neil A; Lam, Wilbur A; Fletcher, Daniel A

2009-01-01

423

Vast Educational Mobile Content Broadcasting using ARMrayan Multimedia Mobile CMS  

CERN Document Server

The huge information flow currently available to young generation makes it difficult for educational centers to train them as needed. Most of these information flows occur in transportation time or while on public areas. Competing with commercial information streams is far out of educational centers time and budget. For creating enough mobile applications for vast educational mobile content broadcasting that can match young spirits as well, we designed and developed the ARMrayan Multimedia Mobile CMS as the software that helps communities, educational, cultural or marketing centers in a way that ordinary operators be able to create a variety of fully functional multimedia mobile applications such as tutorials, catalogues, books, and guides in minutes without writing even a line of code. In this paper, we present the role of our developed software in our proposed vast educational content broadcasting system using kiosks and Bluetooth advertising, which will lead to a great leap in M-commerce marketing and publ...

Fatahi, Somayeh; Jahromi, Zahra Forootan

2010-01-01

424

Life cycle of mobile devices  

Directory of Open Access Journals (Sweden)

Full Text Available Article is devoted features of life cycle of mobile devices. The article highlighted a number of disadvantages associated with managing the life cycle of the product. Disadvantages include the orientation is not on the quality of mobile devices and their design, the obsolescence of digital products. The article drew attention to the need for process improvement life cycle management of mobile devices. For since this type of product is now the most popular among the population, consumers are interested, first of all, quality, and only then, look good.

T.V. Rohal

2011-12-01

425

Security Threats in Prepaid Mobile  

Directory of Open Access Journals (Sweden)

Full Text Available Recent communications environment significantly expand themobile environment. Prepaid mobile services for 3G networksenables telecommunication to sign up new users by utilizing thelatest in converged billing technologies. The worldwide mobilecommunication market is exploding, and 50 percent ofsubscribers are expected to use prepaid billing . Prepaidservices are driving mobile communication into emergingmarkets such as South America, Eastern Europe, Asia, Africaand Gulf Countries. Prepaid phone service requires a user tomake payment before calling. It is quite common to get prepaidSIM cards on every major Network. This paper discuss aboutvarious prepaid techniques, challenges and countermeasures inprepaid mobile communication system .

Arshiya Begum

2013-04-01

426

Rural medicine via mobile network  

International Nuclear Information System (INIS)

Bhabha Atomic Research Centre (BARC) has developed a handheld Tele-ECG system for providing optimum cardiac care and a Mobile Network Based Telemedicine (MNBT) utility for providing telemedicine services to isolated rural population. The handheld Tele-ECG acquires, saves and transfers the electrocardiographic signal to the expert's mobile for his advice in dealing with cardiac emergencies. Similarly, MNBT utility transfers the medical images and relevant patient data from a PC based instrument to a mobile phone for further transmission to an expert for his advice. This paper summarizes these developments. (author)

427

Speech processing in mobile environments  

CERN Document Server

This book focuses on speech processing in the presence of low-bit rate coding and varying background environments. The methods presented in the book exploit the speech events which are robust in noisy environments. Accurate estimation of these crucial events will be useful for carrying out various speech tasks such as speech recognition, speaker recognition and speech rate modification in mobile environments. The authors provide insights into designing and developing robust methods to process the speech in mobile environments. Covering temporal and spectral enhancement methods to minimize the effect of noise and examining methods and models on speech and speaker recognition applications in mobile environments.

Rao, K Sreenivasa

2014-01-01

428

Measurement of mobile antenna systems  

CERN Document Server

If you're involved with the design, installation or maintenance of mobile antenna systems, this thoroughly revised and updated edition of a classic Artech book offers you the most current and comprehensive coverage of all the mandatory measurement techniques you need for your work in the field. This Second Edition presents critical new material in key areas, including radiation efficiency measurement, mobile phone usage position, and MIMO (multiple-input/multiple-output) antennas.This unique resource provides in-depth examinations of all relevant mobile antenna measurement theories, along with

Arai, Hiroyuki

2012-01-01

429

Virtualization techniques for mobile systems  

CERN Document Server

This book presents effective ways to partition mobile devices such that the enterprise system access and its information are completely separated from the personal information. For those using mobile devices for personal and business purposes, the ability to keep the data secure and separate is critical. The applications for security in smart platforms range from personal email accounts to global enterprise systems.Several approaches for mobile virtualization are described, all creating secure and secluded environments for enterprise information. The authors present a reference architecture th

Jaramillo, David; Agarwal, Ankur

2014-01-01

430

Mobile Web Design for Dummies  

CERN Document Server

The perfect place to learn how to design Web sites for mobile devices!. With the popularity of Internet access via cell phones and other mobile devices, Web designers now have to consider as many as eight operating systems, several browsers, and a slew of new devices as they plan a new site, a new interface, or a new sub-site. This easy-to-follow friendly book guides you through this brave new world with a clear look at the fundamentals and offers practical techniques and tricks you may not have considered.: Explores all issues to consider in planning a mobile site; Covers the tools needed for

Warner, Janine

2010-01-01

431

The GalileoMobile Program  

Science.gov (United States)

GalileoMobile is an itinerant science education program that is bringing astronomy closer to young people around the world since 2009 (http://galileo-mobile.org/). GalileoMobile acts in areas where outreach projects are scarce or non-existent. It is a purely non-profit initiative run by 22 volunteers (astronomers, educators and science communicators) from all over the world. The team seeks to promote cultural interaction among people beyond geographical borders and spread the message that we all live under the same sky.

Spinelli, P. F.

2014-10-01

432

Sampling Method for Welding Fumes and Toxic Gases in Malaysian Small and Medium Enterprises (SMEs  

Directory of Open Access Journals (Sweden)

Full Text Available In 2009 there were 28,840 small and medium enterprises (SMEs in Malaysia which represented 94.2 % of the total establishments in the manufacturing sector. Job tasks in manufacturing sectors above all involve welding processes. The issues in SMEs mainly resolve around poor working conditions contributing to worker’s safety and health problem. Welding fumes and toxic gas assessment in SMEs welding workplace is essential in order to ensure the minimum level of exposure is maintained as required by the prevailing standards. This paper outlines the methodology for fumes and toxic gas sampling by taking into account analytical method currently available for analysis in the government accredited laboratory. The proposed methods are divided into two; the pilot test and the actual measurement. Standardize sampling method using sampling pump along with direct reading measurement are consider in both the pilot test and actual measurement. The proposed sampling method hopefully will benefit researcher, stakeholders or SMEs by giving guidance on the suitable method for welding workplace assessment.

Azian Hariri

2012-06-01

433

Mobile Cosmetics Advisor: An Imaging Based Mobile Service  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Selecting cosmetics requires visual information and often benefits from the assessments of a cosmetics expert. In this paper we present a unique mobile imaging application that enables women to use their cell phones to get immediate expert advice when selecting personal cosmetic products. We derive the visual information from analysis of camera phone images, and provide the judgment of the cosmetics specialist through use of an expert system. The result is a new paradigm for mobile interactio...

Bhatti, Nina; Baker, Harlyn; Chao, Hui; Clearwater, Scott; Harville, Michael; Jain, Jhilmil; Lyons, Nic; Marguier, Joanna; Schettino, John; Su?sstrunk, Sabine

2010-01-01

434

Aerosol mobility size spectrometer  

Science.gov (United States)

A device for measuring aerosol size distribution within a sample containing aerosol particles. The device generally includes a spectrometer housing defining an interior chamber and a camera for recording aerosol size streams exiting the chamber. The housing includes an inlet for introducing a flow medium into the chamber in a flow direction, an aerosol injection port adjacent the inlet for introducing a charged aerosol sample into the chamber, a separation section for applying an electric field to the aerosol sample across the flow direction and an outlet opposite the inlet. In the separation section, the aerosol sample becomes entrained in