WorldWideScience
1

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

2

Direct reading spectrochemical analysis of nuclear graphite  

International Nuclear Information System (INIS)

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

3

Zirconium and zircaloy production control using a direct reading spectrometer  

International Nuclear Information System (INIS)

The present work deals with the characterization of trace critical impurities in zirconium and its various alloys which are used as structural materials for thermal reactors. Using the Direct Reading spectrometer, considerable improvements in detection limits has been achieved. DC arc source in the spectrometer has been effectively employed for analyzing powder samples. RSD for majority of the elements were found to be with in 10%. (author)

4

Direct-reading spectrochemical analysis of soils and plant ashes  

International Nuclear Information System (INIS)

Two different techniques haves been tried to determine trace elements in soils and plant ashes using a direct reading spectrometer :1) the samples are mixed with graphite powder and excited on 2x4 mm graphite rods with a 13 amperes direct current arc: 2) a mixture of graphite and strontium carbonate is used as spectrochemical buffer, and 2x6 mm cup graphite rods in a 10 amperes direct current arc. We have studies the influence of sodium, potassium and calcium on the results. (Author)

5

A direct-reading electroscope type pocket exposure meter  

International Nuclear Information System (INIS)

The construction, principle and performance of a direct-reading electroscope type pocket exposure meter are described. Its main performances are: electrical leakage is 0.5% per day; calibration accuracy is +-10%; energy dependence is +-20%

6

Effective Mobile Sampling In Broad Cast Network  

Science.gov (United States)

Mobile objects can be used to gather samples from a sensor field. Civilian vehicles or even human beings equipped with proper wireless communication devices can be used as mobile sinks that retrieve sensor-data from sampling points within a large sensor field. A key challenge is how to gather the sensor data in a manner that is energy efficient with respect to the sensor nodes that serve as sources of the sensor data. In this paper, an algorithmic technique called Band-based Directional Broadcast is introduced to control the direction of broadcasts that originate from sensor nodes. The goal is to direct each broadcast of sensor data toward the mobile sink, thus reducing costly forwarding of sensor data packets. The technique is studied by simulations that consider energy consumption and data deliverability.

Sivakumar, K.; Ravichandran, T.

2012-08-01

7

Direct reading spectrochemical analysis of sodium uranate  

International Nuclear Information System (INIS)

We describe the application of the quantometer to the analysis of sodium uranate. To determine boron, cadmium, phosphorus and molybdenum contents, the samples are mixed with graphite powder (1:30) and excited in a 10 amperes direct current arc with 4x4,,5 mm cup graphite rods, using silver as internal standard. A not se deep cup and a dilution factor of 90 are more suitable for calcium, copper, iron, silicon and vanadium determination; cobalt and chromium are the internal standards. (Author) 6 refs

8

Mobile Variable Depth Sampling System Design Study  

International Nuclear Information System (INIS)

A design study is presented for a mobile, variable depth sampling system (MVDSS) that will support the treatment and immobilization of Hanford LAW and HLW. The sampler can be deployed in a 4-inch tank riser and has a design that is based on requirements identified in the Level 2 Specification (latest revision). The waste feed sequence for the MVDSS is based on Phase 1, Case 3S6 waste feed sequence. Technical information is also presented that supports the design study

9

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

10

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

11

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)

12

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

13

Direct reading spectrochemical determination of aluminium, iron and silicon in fluorite  

International Nuclear Information System (INIS)

A quantitative spectrochemical method for the determination of Al, Fe and Si in fluorite has been worked out. The sample was supported in a graphite electrode with crater of 5 mm. in diameter, 2,5 mm deep, and burned by a d.c. are in a direct reading spectrometer. The excitation of samples has been studied without dilution as well as using graphite powder as diluent in the ratios 1:1, 1:4, and 1:9; the latter factor was chosen. Ag, Ca, Co, Cr, Mo and Sn were tested as internal standards. It has not been found any significant inter element effect. It is necessary to use natural fluorite as base material for the standards. (Author) 5 refs

14

A Refined Experience Sampling Method to Capture Mobile User Experience  

OpenAIRE

This paper reviews research methods used to understand the user experience of mobile technology. The paper presents an improvement of the Experience Sampling Method and case studies supporting its design. The paper concludes with an agenda of future work for improving research in this field. Keywords: Research methods, topology, case study, contrasting graph, Experience Sampling Method

Cherubini, Mauro; Oliver, Nuria

2009-01-01

15

Experience-Sampling Methodology with a Mobile Device in Fibromyalgia  

OpenAIRE

This work describes the usability studies conducted in the development of an experience-sampling methodology (ESM) system running in a mobile device. The goal of the system is to improve the accuracy and ecology in gathering daily self-report data in individuals suffering a chronic pain condition, fibromyalgia. The usability studies showed that the developed software to conduct ESM with mobile devices (smartphones, cell phones) can be successfully used by individuals with fibromyalgia of diff...

Miralles Ignacio; Farfallini Luis; García-Palacios Azucena; Botella Cristina; Castilla Diana

2012-01-01

16

Direct-reading spectrochemical analysis of magnesium alloys  

International Nuclear Information System (INIS)

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

17

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

18

Improved configuration space sampling: Langevin dynamics with alternative mobility  

Science.gov (United States)

We present a new and efficient method for determining optimal configurations of a large number (N) of interacting particles. We use a coarse-grained stochastic Langevin equation in the overdamped limit to describe the dynamics of this system and replace the standard mobility by an effective space dependent inverse Hessian correlation matrix. Due to the analogy of the drift term in the Langevin equation and the update scheme in Newton's method, we expect accelerated dynamics or improved convergence in the convex part of the potential energy surface ?. The stochastic noise term, however, is not only essential for proper thermodynamic sampling but also allows the system to access transition states in the concave parts of ?. We employ a Broyden-Fletcher-Goldfarb-Shannon method for updating the local mobility matrix. Quantitative analysis for one and two dimensional systems shows that the new method is indeed more efficient than standard methods with constant effective friction. Due to the construction, our effective mobility adapts high values/low friction in configurations which are less optimal and low values/high friction in configurations that are more optimal.

Chau, C. D.; Sevink, G. J. A.; Fraaije, J. G. E. M.

2008-06-01

19

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

Science.gov (United States)

The performances of five portable direct-reading dust monitors were investigated in a wind tunnel for a range of industrial dusts and three sizes of aluminium 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. These were the IOM sampler for the inhalable fraction and the Casella cyclone sampler for the respirable fraction. All instruments are predominantly responsive to and are designed to measure particles in the respirable size range, although two of the instruments, the Split 2 and Respicon TM, are claimed to be capable of measuring inhalable-sized particles. For the purpose of the tests, major modifications to an existing wind tunnel dust injection system were made to facilitate the generation of uniform concentrations of large inhalable-sized dust particles at low air velocities. 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, defined as the ratio of reference inhalable concentration to monitor concentration, were especially sensitive to changes in particle size as the response of the instruments decreased rapidly with increasing 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 head of the Split 2 monitor incorporates an IOM inlet and filter to gravimetrically collect the inhalable fraction of airborne dust. This can give a concurrent reference measure of inhalable airborne dust concentration. However, poor sealing within the sampling head resulted in some of the sampled dust not reaching the backup filter. This resulted in the Split 2 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. PMID:16799158

Thorpe, Andrew

2007-01-01

20

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 evaluatprotection 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)

21

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

Energy Technology Data Exchange (ETDEWEB)

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{reg_sign} gloves are promising for tank farm applications. However, permeation testing documentation is needed for the COPC and mixtures for Silver Shield{reg_sign} gloves to evaluate their protectiveness. North Safety Products is expected to provide the requested documentation. Multiple Tychem{reg_sign} 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{reg_sign} 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).

BUTLER, N.K.

2004-11-01

22

AN OVERVIEW OF MOBILE SAMPLING OF SENSOR FIELD INFORMATION USING RESTRICTED TRANSMIT  

OpenAIRE

In recent times, the perception of employing mobile objects i.e. sometimes referred to as mobile sinks to query a sensor network has been proposed. Applications can make use of this mobility to vigorously sample a sensor field. Mobile objects can be used to collect samples from a sensor field. Inhabitant vehicles or even human beings set with proper wireless communication devices can be used as mobile sinks that recover sensor-data from sampling points within a huge sensor field. A key challe...

Jagadeesh Paluru; Anusha, K.

2013-01-01

23

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

24

Optical design and performance of a dual-grating, direct-reading spectrograph for spectrochemical analyses  

International Nuclear Information System (INIS)

An all-mirror optical system is used to direct the light from a variety of spectroscopic sources to two 2-m spectrographs that are placed on either side of a sturdy vertical mounting plate. The gratings were chosen so that the first spectrograph covers the ultraviolet spectral region, and the second spectrograph covers the ultraviolet, visible, and near-infrared regions. With the over 2.5 m of focal curves, each ultraviolet line is available at more than one place. Thus, problems with close lines can be overcome. The signals from a possible maximum of 256 photoelectric detectors go to a small computer for reading and calculation of the element abundances. To our knowledge, no other direct-reading spectrograph has more than about 100 fixed detectors. With an inductively-coupled-plasma source, our calibration curves, and detection limits, are similar to those of other workers using a direct-reading spectrograph

25

The Explicit Instruction of Reading Strategies: Directed Reading Thinking Activity vs. Guided Reading Strategies  

Directory of Open Access Journals (Sweden)

Full Text Available Investigating the efficiencies and deficiencies of reading strategies is one of the noticeable issues in the related theory and research in reading comprehension instruction. This study was to examine the impact of Directed Reading Thinking Activity (DRTA and Guided Reading (GR on reading comprehension. Sixty three Iranian students of grade one in Shahed high school in the city of Bojnourd took part in the study. They were assigned in three groups, one control and two experimental groups. The instruction lasted for ten weeks. This study utilized a pretest posttest control group in quantitative quasi- experimental design. The same reading comprehension test was administered as pre-test and post-test. The results were twofold: First, the instruction of learning strategies could foster reading comprehension skill. Second, while the explicit instruction of both strategies could improve the students' reading comprehension skill, Directed Reading Thinking Activity had a more significant positive effect than Guided Reading.Keywords: reading strategy, explicit, directed reading thinking activity (DRTA, guided reading (GR

Mohammad Mehdi Yazdani

2015-05-01

26

Direct-reading inhalable dust monitoring--an assessment of current measurement methods.  

Science.gov (United States)

Direct-reading dust monitors designed specifically to measure the inhalable fraction of airborne dust are not widely available. Current practice therefore often involves comparing the response of photometer-type dust monitors with the concentration measured with a reference gravimetric inhalable sampler, which is used to adjust the dust monitor measurement. However, changes in airborne particle size can result in significant errors in the estimation of inhalable concentration by this method. The main aim of this study was to assess how these dust monitors behave when challenged with airborne dust containing particles in the inhalable size range and also to investigate alternative dust monitors whose response might not be as prone to variations in particle size or that could be adapted to measure inhalable dust concentration. Several photometer-type dust monitors and a Respicon TM, tapered element oscillating microbalance (TEOM) personal dust monitor (PDM) 3600, TEOM 1400, and Dustrak DRX were assessed for the measurement of airborne inhalable dust during laboratory and field trials. The PDM was modified to allow it to sample and measure larger particles in the inhalable size range. During the laboratory tests, the dust monitors and reference gravimetric samplers were challenged inside a large dust tunnel with aerosols of industrial dusts known to present an inhalable hazard and aluminium oxide powders with a range of discrete particle sizes. A constant concentration of each dust type was generated and peak concentrations of larger particles were periodically introduced to investigate the effects of sudden changes in particle size on monitor calibration. The PDM, Respicon, and DataRam photometer were also assessed during field trials at a bakery, joinery, and a grain mill. Laboratory results showed that the Respicon, modified PDM, and TEOM 1400 observed good linearity for all types of dust when compared with measurements made with a reference IOM sampler; the photometer-type dust monitors on the other hand showed little correlation. The Respicon also accurately measured the inhalable concentration, whereas the modified PDM underestimated it by ~27%. Photometer responses varied considerably with changing particle size, which resulted in appreciable errors in airborne inhalable dust concentration measurements. Similar trends were also observed during field trials. Despite having limitations, both the modified PDM and Respicon showed promise as real-time inhalable dust monitors. PMID:23704135

Thorpe, Andrew; Walsh, Peter T

2013-08-01

27

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

28

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

OpenAIRE

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...

Liu Hong-Jiang; Wang Ren-Huang; Li Xue-Cong

2012-01-01

29

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

30

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

31

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.

32

Direct reading microwave interferometer for measurements of the local electron density in a plasma  

International Nuclear Information System (INIS)

The direct reading microwave interferometer for measurments of the local electron density in a low-pressure plasma has been described and the performance principle has been discussed. In this interferometer, which operates in X band, special phase-sensitive detecting system and the section of the Lecher line together with two field transformers to create converged microwave fields in the examined plasma are used. Some results of the measurements which have been carried out using the interferometer are presented. The reported sensitivity is about 4.109cm-3 and accuracy 10%. The space resolutions in two directions perpendicular to the Lecher line are about 10 mm and 5mm. The time resolution depends on the properties of semiconductor diodes and amplifiers of the used oscilloscop. (S.B.)

33

Passive, Direct-Read Monitoring System for Selective Detection and Quantification of Hydrogen Chloride  

Science.gov (United States)

Monitoring the exposure of an employee to hydrogen chloride or hydrochloric acid in the presence of other acids has been a challenge to the industrial hygiene community. The capability of a device to differentiate the levels of acid vapors would allow for more accurate determinations of exposure and therefore improved occupational health. In this work, a selective direct-read colorimetric badge system was validated for Short Term Exposure Limit (STEL) monitoring of hydrogen chloride. The passive colorimetric badge system consists of a direct reading badge and a color scale. The badge has a coated indicator layer with a diffusive resistance in the shape of an exclamation mark. An exclamation mark will appear if hydrogen chloride is present in the atmosphere at concentrations at or above 2.0 ppm. By using the color scale, the intensity of the color formed on the badge can be further quantified up to 25 ppm. The system was validated according to a protocol based on the NIOSH Protocol for the Evaluation of Passive Monitors. The badge was exposed to relative humidities ranging from 11% to 92%, temperatures ranging from 7 C to 400 C and air velocities ranging from 5 cm/sec to 170 cm/sec. All experiments were conducted in a laboratory vapor generation system. Hydrofluoric acid, nitric acid, sulfuric acid, chlorine, hydrogen sulfide and organic acids showed no effect on the performance of the hydrogen chloride monitoring system. The passive badge and color scale system exceeded the accuracy requirements as defined by NIOSH. At ambient conditions, the mean coefficient of variation was 10.86 and the mean bias was 1.3%. This data was presented previously at the American Industrial Hygiene Conference and Exposition in Toronto, Canada in June 1999.

Chapman, K. B.; Mihaylov, G. M.; Kirollos, K. S.

2000-01-01

34

AN OVERVIEW OF MOBILE SAMPLING OF SENSOR FIELD INFORMATION USING RESTRICTED TRANSMIT  

Directory of Open Access Journals (Sweden)

Full Text Available In recent times, the perception of employing mobile objects i.e. sometimes referred to as mobile sinks to query a sensor network has been proposed. Applications can make use of this mobility to vigorously sample a sensor field. Mobile objects can be used to collect samples from a sensor field. Inhabitant vehicles or even human beings set with proper wireless communication devices can be used as mobile sinks that recover sensor-data from sampling points within a huge sensor field. A key challenge is how to collect the sensor information in a way that is energy resourceful with respect to the sensor nodes that serve as sources of the sensor data. In this paper, to control the direction of broadcasts that originate from sensor nodes, an algorithmic technique called Band-based Directional Broadcast is proposed. The goal is to express each broadcast of sensor data toward the mobile sink, thus dropping costly forwarding of sensor data packets. The method is studied by simulations that regard as energy utilization and information deliverability.  

Jagadeesh Paluru

2013-08-01

35

Spray nebulization for sample introduction in ion mobility spectrometry.  

Science.gov (United States)

A new sample introduction system based on spray nebulization has been successfully developed to perform direct analysis of liquid samples by IMS. The system comprises a concentric nebulizer that generates a spray plume which is introduced in the ionization region of the IMS instrument through a temperature controlled transfer line. This system avoids previous problems of direct injection of liquid samples and maintains the countercurrent flow of inert gas necessary for the operation of the IMS instrument. Evaluation of the qualitative and quantitative capabilities of the methodology has been performed after a carefully study of the main variables affecting the spray nebulization and the transport of the analyte molecules through the transfer line. To demonstrate the usefulness of the new sample introduction system, direct analysis of drugs and drug metabolites in saliva or urine samples have been performed, obtaining accurate, reliable and sensitive results. Moreover, analytes with physico-chemical properties that limited the capability of thermal desorption as sample introduction method such as amino acids can be analyzed by using the spray nebulization methodology. PMID:23498126

Armenta, S; Gonzálvez, A; Blanco, M

2013-03-26

36

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

37

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

Scientific Electronic Library Online (English)

Full Text Available 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.

2005-09-01

38

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

39

The Influence of Social Network in Mobile Experience Sampling -Development and Implementation of Android based Mobile Experience Sampling tool  

OpenAIRE

The Experience Sampling Method (ESM), a research technique, was initiated to understand human experience and behavior upon a certain subject. This subject can be a commercial product, a period of time or even the quality of our lives. The mostly used pattern in the ESM is questionnaire, a common example of which can be customer satisfactory survey. During the past three decades, the technology used in this kind of research has changed dramatically: from primitively written on paper to vividly...

Huang, Chengcheng

2012-01-01

40

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.

41

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

42

Radiation dosimetry at the ''Salyut'' station with the aid of directly reading dosemeters  

Energy Technology Data Exchange (ETDEWEB)

Using PPD-2 directly reading dosimeters, daily radiation doses were measured in the same site of the Salyut-3. Salyut-4 and Salyut-5 stations (1974-1977). The doses were estimated to be about 13-16 mrad/day. During the flight of the Salyut-6 station (1977-1979) daily doses were measured in different sites and were found to vary significantly. By 1980, due to an increase in solar activity and lack of solar flares, the difference in the daily doses inside the station (except for the transfer module) reached the level of the error of measurements, i. e. +-20%.

Markelov, V.V.; Chernykh, I.V.

43

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

44

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

45

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.

HovmØller, M.S.; Munk, L.

1995-01-01

46

Central aperture detection for auto direct read-write photoresist fabrication and inspection  

Science.gov (United States)

We show the design for a laser scanning microscopy defect detection system based upon the idea that the light can reflect off a photoresist-laden fused-silica sample containing defects, allowing height and depth information to be obtained through changes in light intensity. Image registration using predefined points is employed. Image processing techniques involving median and deconvolution filtering are used. Results show that the 2.1-?m resolution of these defects is obtainable, and receiver operating characteristic curves are used for quantifying results. Discriminabilities of 0.73 are achieved. Preliminary results for larger-array patterns through stitching processes are also shown.

Sierchio, Justin M.; Zaverton, Melissa; Johnson, Lee; Densmore, Victor; Milster, Thomas

2014-08-01

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

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

49

Classification and quantitative optical analysis of liquid and solid samples using a mobile phone as illumination source and detector  

OpenAIRE

A mobile phone has been used both as illumination source and image detector for quantitative optical analysis of colored liquid samples (4 different colorants) and solid samples (printed color patterns, plastic beads and colored sand grains). Even though the measurement conditions were far from ideal, because the light source was strongly polychromatic and the illumination was not a collimated light beam with homogeneous light intensity, a logarithmic concentration dependence, in accordance w...

Iqbal, Zafar; Eriksson, Mats

2013-01-01

50

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.

51

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.

52

Distribution, accumulation and mobility of mercury in superficial sediment samples from Tianjin, northern China.  

Science.gov (United States)

Seventeen sediment samples at three representative sites (the Yuqiao Reservoir, the Haihe River and the Haihe River Estuary) in Tianjin, northern China, were analyzed to investigate the pollution status, accumulation and mobility of mercury (Hg). The results show that the Haihe River has to be considered as moderate to strongly contaminated with Hg (2 River Estuary sediments have to be considered as unpolluted to moderately polluted with Hg (0 River Estuary was found to be predominantly associated with the organo-chelated phase of the sediment (38.3% and 50.5%, respectively). However, unlike the Yuqiao Reservoir and the Haihe River Estuary, Hg in the Haihe River sediments existed mainly as sulfide Hg and elemental Hg, which accounted for 54.2% and 30.7% of total Hg, respectively. The availability of this element seemed restricted. The majority of Hg contamination in the Haihe River sediments had been attributed to historic and modern atmospheric deposition and Hg released from the Haihe River sediments didn't seem to be an important pollutant pathway into the Haihe River Estuary. The results provide new insights into Hg contamination in this region. PMID:21805008

Wu, Guanghong; Wei, Zheng; Su, Ruixian

2011-09-01

53

Mobile sources of polycyclic aromatic hydrocarbons (PAH) and nitro-PAH: Results of samples collected in a roadway tunnel  

International Nuclear Information System (INIS)

A recent review article emphasized the need for further characterizations of the carbonaceous fraction of mobile source emissions, particularly with the impending removal of lead alkyl octane boosters and bromine-containing lead scavengers from regular leaded gasolines. The lead and bromine emitted from the combustion of these fuels have been used as tracers of mobile source emissions for a number of years. Single vehicle emission studies have shed light on the relationship between engine operating parameters and the chemical characteristics of the emissions but they are not suitable for use in source apportionment studies which require emission data from a large number of different vehicles. Air particulate samples collected near a busy highway or in a roadway tunnel would be more appropriate for use in estimating the mobile source contribution of organic compounds to a region. Suspended particle samples collected in a heavily-travelled roadway tunnel (Baltimore Harbor Tunnel, Baltimore, Maryland) were characterized for polycyclic aromatic hydrocarbons (PAH) and some nitro-PAH by gas and liquid chromatographic techniques. These samples included those collected on Teflon filters and on glass fiber filters for investigating any differences in samples collected on an inert (Teflon) and more reactive (glass-fiber) medium. All samples collected on Teflon were backed-up with polyurethane foam plugs (PUF) which trapped any inherent vapor-phase PAH as well as any compounds 'vapor-phase PAH as well as any compounds ''blown-off'' the particles during collection

54

Mobilization Protocols for Hybrid Sensors for Environmental AOP Sampling (HySEAS) Observations  

Science.gov (United States)

The protocols presented here enable the proper mobilization of the latest-generation instruments for measuring the apparent optical properties (AOPs) of aquatic ecosystems. The protocols are designed for the Hybrid Sensors for Environmental AOP Sampling (HySEAS) class of instruments, but are applicable to the community of practice for AOP measurements. The protocols are organized into eleven sections beyond an introductory overview: a) cables and connectors, b) HySEAS instruments, c) platform preparation, d) instrument installation, e) cable installation, f) test deployment, g) test recovery, h) maintenance, i) shipping, j) storage, and k) smallboat operations. Each section concentrates on documenting how to prevent the most likely faults, remedy them should they occur, and accomplishing both with the proper application of a modest set of useful tools. Within the twelve sections, there are Socratic exercises to stimulate thought, and the answers to these exercises appear in Appendix A. Frequently asked questions (FAQs) are summarized in a separate section after the answers to the exercises in Appendix B. For practitioners unfamiliar with the nautical terms used throughout this document plus others likely encountered at sea, an abbreviated dictionary of nautical terms appears in Appendix C. An abbreviated dictionary of radiotelephone terms is presented in Appendix D. To ensure familiarity with many of the tools that are presented, Appendix E provides a description of the tools alongside a thumbnail picture. Abbreviated deployment checklists and cable diagrams are provided in Appendix F. The document concludes with an acknowledgments section, a glossary of acronyms, a definition of symbols, and a list of references.

Hooker, Stanford B.

2014-01-01

55

Direct-reading design charts for 75S-T6 aluminum-alloy flat compression panels having longitudinal extruded Z-section stiffeners  

Science.gov (United States)

Direct-reading design charts are presented for 75S-T6 aluminum-alloy flat compression panels having longitudinal extruded Z-section stiffeners. These charts, which cover a wide range of proportions, make possible the direct determination of the stress and all panel dimensions required to carry a given intensity of loading with a given skin thickness and effective length of panel.

Hickman, William A; Dow, Norris F

1951-01-01

56

Development of direct reading dosimeters for the dose 0-3 mSv and 0-5 mSv ranges for personnel monitoring  

International Nuclear Information System (INIS)

Direct reading dosimeters (DRDs) are widely used to measure cumulative dose received by personnel working at nuclear reactor sites or in other environment having x- and gamma rays. A DRD operates on the principle of gold leaf electroscope, and is a small, rugged, hermetically sealed, self reading type device easily carried by an individual in his pocket. The development of dosimeters suitable for the dose ranges 0-3 mSv and 0-5 mSv is reported

57

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

58

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

59

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

60

Effect of mobile phase anionic additives on selectivity, efficiency, and sample loading capacity of cationic drugs in reversed-phase liquid chromatography  

OpenAIRE

In the present work, we study the effect of mobile phase anionic additives type and concentration on selectivity, efficiency, and sample loading capacity of cationic drugs in reversed-phase liquid chromatography (RPLC).

Dai, Jun; Carr, Peter W.

2009-01-01

61

Assessing the Risk Factors of Cyber and Mobile Phone Bullying Victimization in a Nationally Representative Sample of Singapore Youth.  

Science.gov (United States)

This study utilized routine activity theory to examine the relationships between online behaviors, target suitability, and cyber and mobile phone-based bullying victimization in a nationally representative sample of youth from nine schools across Singapore. Key measures in all three categories-access to technology, online routine behaviors, and target suitability-were significant predictors of both forms of bullying victimization. In particular, females and victims of physical bullying were more likely to experience both forms of victimization. Access to technology and online routine behaviors predicted cyber and mobile phone-based bullying victimization differently. These findings demonstrate that routine activity theory is a viable framework to understand online bullying in non-Western nations, consistent with the existing literature on Western nations. PMID:25326463

Holt, Thomas J; Fitzgerald, Sarah; Bossler, Adam M; Chee, Grace; Ng, Esther

2014-10-16

62

Dynamic Acquisition and Retrieval Tool (DART) for Comet Sample Return : Session: 2.06.Robotic Mobility and Sample Acquisition Systems  

Science.gov (United States)

The 2011 Decadal Survey for planetary science released by the National Research Council of the National Academies identified Comet Surface Sample Return (CSSR) as one of five high priority potential New Frontiers-class missions in the next decade. The main objectives of the research described in this publication are: develop a concept for an end-to-end system for collecting and storing a comet sample to be returned to Earth; design, fabricate and test a prototype Dynamic Acquisition and Retrieval Tool (DART) capable of collecting 500 cc sample in a canister and eject the canister with a predetermined speed; identify a set of simulants with physical properties at room temperature that suitably match the physical properties of the comet surface as it would be sampled. We propose the use of a dart that would be launched from the spacecraft to impact and penetrate the comet surface. After collecting the sample, the sample canister would be ejected at a speed greater than the comet's escape velocity and captured by the spacecraft, packaged into a return capsule and returned to Earth. The dart would be composed of an inner tube or sample canister, an outer tube, a decelerator, a means of capturing and retaining the sample, and a mechanism to eject the canister with the sample for later rendezvous with the spacecraft. One of the significant unknowns is the physical properties of the comet surface. Based on new findings from the recent Deep Impact comet encounter mission, we have limited our search of solutions for sampling materials to materials with 10 to 100 kPa shear strength in loose or consolidated form. As the possible range of values for the comet surface temperature is also significantly different than room temperature and testing at conditions other than the room temperature can become resource intensive, we sought sample simulants with physical properties at room temperature similar to the expected physical properties of the comet surface material. The chosen DART configuration, the efforts to identify a test simulant and the properties of these simulants, and the results of the preliminary testing will be described in this paper.

Badescu, Mircea; Bonitz, Robert; Kulczycki, Erick; Aisen, Norman; Dandino, Charles M.; Cantrell, Brett S.; Gallagher, William; Shevin, Jesse; Ganino, Anthony; Haddad, Nicolas; Walkemeyer, Phillip; Backes, Paul; Shiraishi, Lori

2013-01-01

63

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

Directory of Open Access Journals (Sweden)

Full Text Available 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

2011-06-01

64

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

OpenAIRE

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

2011-01-01

65

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

66

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

67

Interstitial oxygen mobility in superconducting samples of Bi2Sr2CaCu2O8+y  

International Nuclear Information System (INIS)

Since high-temperature superconductors were discovered, several studies have been made on their physical properties, attempting to associate them to the origin of superconductivity. Obviously, the oxygen atoms interstitially dissolved in the matrix have an important role in superconductivity, since they move easily in the lattice. In addition, they contribute to hole creation in the CuO2 planes. Anelastic spectroscopy (internal friction) measurements are sensitive tools for the study of defects in solids, in particular for oxygen mobility. In this paper, Bi2Sr2CaCu2O8+y samples with several different amounts of interstitial oxygen were analysed by means of anelastic spectroscopy measurements. The measurements were performed by using a torsion pendulum operating at a frequency of about 40 Hz. Complex relaxation structures were observed and attributed to the shift of the oxygen interstitial atoms in BiO chains

68

Mobile Payload Element (MPE): Concept study for a sample fetching rover for the ESA Lunar Lander Mission  

Science.gov (United States)

In late 2010, the DLR Space Administration invited the German industry to submit a proposal for a study about a Mobile Payload Element (MPE), which could be a German national contribution to the ESA Lunar Lander Mission. Several spots in the south polar region of the moon come into consideration as landing site for this mission. All possible spots provide sustained periods of solar illumination, interrupted by darkness periods of several 10 h. The MPE is outlined to be a small, autonomous, innovative vehicle in the 10 kg class for scouting and sampling the environment in the vicinity of the lunar landing site. The novel capabilities of the MPE will be to acquire samples of lunar regolith from surface, subsurface as well as shadowed locations, define their geological context and bring them back to the lander. This will enable access to samples that are not contaminated by the lander descent propulsion system plumes to increase the chances of detecting any indigenous lunar volatiles contained within the samples. Kayser-Threde, as prime industrial contractor for Phase 0/A, has assembled for this study a team of German partners with relevant industrial and institutional competence in space robotics and lunar science. The primary scientific objective of the MPE is to acquire clearly documented samples and to bring them to the lander for analysis with the onboard Lunar Dust Analysis Package (L-DAP) and Lunar Volatile Resources Analysis Package (L-VRAP). Due to the unstable nature of volatiles, which are of particular scientific interest, the MPE design needs to provide a safe storage and transportation of the samples to the lander. The proposed MPE rover concept has a four-wheeled chassis configuration with active suspension, being a compromise between innovation and mass efficiency. The suspension chosen allows a compact stowage of the MPE on the lander as well as precise alignment of the solar generators and instruments. Since therefore no further complex mechanics are necessary, the active suspension significantly contributes to the lightweight MPE design. The thermal control system enables the MPE to operate in shaded areas for about 2 h and hibernate darkness periods of about 14 h. Increasing the hibernation capability requires additional battery capacity and thus increases the MPE mass. As operational modes teleoperations from earth and autonomous navigation are foreseen. The MPE payload includes navigation cameras, a close-up imager and a mole as sampling device. The MPE phase 0/A study finished in early 2012. This article describes the resulting MPE rover concept with focus on its scientific benefit for the Lunar Lander Mission.

Haarmann, R.; Jaumann, R.; Claasen, F.; Apfelbeck, M.; Klinkner, S.; Richter, L.; Schwendner, J.; Wolf, M.; Hofmann, P.

2012-12-01

69

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

70

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.

71

A Wheeled Mobile Device for Deployment of Surface and Subsurface Instruments and for Subsurface Sampling on Planets  

Science.gov (United States)

As a result of the ESA TRP activity MIDD (Mobile Instrument Deployment Device), an advanced Breadboard Model of a wheeled mobile device for use on planetary surfaces has recently been completed and functionally tested. The vehicle is based on previous mechanical component development work for small wheeled devices performed since 1995 and serves to demonstrate the scientific potential of a 4 kg-class system for supporting surface and subsurface science on a planetary landing mission. Moreover, the device is being extensively used to study general problems of locomotion on regolith-like surface materials and of obstacle negotiation. As payload elements, two spectrometers for mineralogical and elemental studies on surface materials - including rocks - have been foreseen, as well as an acoustic subsurface sounder, a close-up imager and a self-penetrating "Mole" for subsurface measurements and sampling. In addition, a dust removal device was accommodated for preparing rock surfaces for measurements. The mass of the payload, excluding their electronics, amounts to 1.5 kg. Following an accommodation study for the instruments, the vehicle chassis was sized by taking into account planetary surface rock distributions with ground clearance as well as mean straight path constraints, while restricting the number of wheels to four for reasons of simplicity and mass. The two front wheels are mounted on folding levers which allow to contact the soil with the cab and to place the spectrometers and the close-up imager against their targets. Also for operations of the Mole sampling system - reaching depths of more than 1 m and being derived from the "Beagle 2" Mole - , the front wheels are preferably rotated upwards to achieve a larger vehicle base. In order to minimize the stowage volume, a dual wheel configuration was chosen which allows the front wheels to be folded back while overlapping the rear wheels. The folding lever feature also provides a re-righting capability by shifting the center-of-mass, should the vehicle fall on its side. All wheels and the two folding levers are individually driven by brushless DC motors located inside a thermal enclosure in the vehicle cab. Except for the actuators and drive mechanisms, the enclosure houses a central electronics unit which also provides pre-processing of payload data. For the power supply and communications, a tether link to the lander is used, allowing a maximum range of some 20 m. As to the tether type, a flexible printed circuit was chosen which allows efficient packaging of the tether on board the vehicle. The wheel design was based on theoretical and experimental studies on tractive performance of small wheels on planetary soils being one of the subjects of the MIDD activity, involving a dedicated soil channel at DLR. As a result, the vehicle wheels were chosen to be rigid while featuring a wire mesh running surface and chevron-shaped grousers. Mass of a flight unit is projected to be around 2.9 kg, excluding the vehicle payload. The principal design philosophy for MIDD has been: conservative design with sufficient margins (i.e., provision of thermal enclosure for instruments); early component development and realistic environmental testing (mechanism functional testing in Thermal Vacuum; dust sealing test with mechanisms operating in simulated airborne dust environment of Mars).

Richter, L.; Bernasconi, M.; Haapanala, S.; Steiner, R.; Coste, P.

2003-04-01

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

Mobility of Po and U-isotopes under acid mine drainage conditions: an experimental approach with samples from Río Tinto area (SW Spain).  

Science.gov (United States)

Under acid mine drainage (AMD) conditions, the solubilities and mobilities of many elements are vastly different from conditions prevailing in most natural waters. Studies are underway in the Río Tinto area (Iberian Pyrite Belt), in order to understand the behavior and mobility of long-lived U-series radionuclides under AMD conditions. A set of leaching experiments utilizing typical country rocks from the Tinto River basin, waste rock pile composite materials, iron-rich riverbed sediments and gossan (weathered naturally rock) were performed towards this purpose. Initial leaching experiments using distilled water kept in contact with solid material for 300, 100, 50 and 1 h resulted in very low concentrations of U with (234)U/(238)U activity ratios close to equilibrium and activity concentrations of (210)Po < 0.03 mBq/g. Leaching experiments performed with sulfuric acid media (0.1 and 0.01 M), and contact times between the solid and solution for 24 h were conducted to quantify the amount of U-isotopes and (210)Po leached, and the radioactive disequilibria generated between the radionuclides in the leachate. These experiments show that Po mobility in acidic conditions (pH around 1-2) is very low, with (210)Po activity in the leachate to be 6% in average for the solid sample. By contrast, mobility of U-isotopes is higher than that of Po, around 1.2%. PMID:24308958

Barbero, L; Gázquez, M J; Bolívar, J P; Casas-Ruiz, M; Hierro, A; Baskaran, M; Ketterer, M E

2014-12-01

74

Dynamic studies on the mobility of trace elements in soil and sediment samples influenced by dumping of residues of the flood in the Mulde River region in 2002.  

Science.gov (United States)

In the analysis of soil samples, batch sequential extraction procedures are traditionally used for the fractionation of trace elements to access their mobility and potential risk for the contamination of groundwater. In the present work a continuous-flow technique has been used that enables not only the fast and efficient leaching of trace elements but as well as time-resolved studies on the mobilization of arsenic and selected heavy metals in different forms to be made. Rotating coiled columns (RCC) earlier used mainly in countercurrent chromatography have been successfully applied to the dynamic leaching of heavy metals from soils contaminated by flooding sludge's. The sample was retained in a PTFE rotating column as the stationary phase whereas aqueous solutions were continuously pumped through. The contents of elements were determined by on-line coupling of RCC and inductively coupled plasma atomic emission spectrometry (ICP-AES). This enables real-time data on the leaching process to be obtained. Dynamic and traditional batch procedures were compared. It has been shown that the aqueous elution under centrifugal forced conditions is much more effective for the mobilization of heavy metals. Hence, the dynamic leaching is characterized by a substantially more intensive interaction between solid and water and is besides substantially more time-saving than the conventional batch procedure. The RCC procedure was also employed for preliminary leaching studies with a simulated "acid rain". In comparison with the water leaching, the mobilization of heavy metals and arsenic from soil samples with employment of simulated acid rain as eluent was less effective. PMID:16157173

Schreiber, Mathias; Otto, Matthias; Fedotov, Petr S; Wennrich, Rainer

2005-09-01

75

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

76

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)

77

Mobile units to hydro geochemistry characterization  

International Nuclear Information System (INIS)

This report shows the mobile units for hydro geochemical studies. The authors analyze the work of mobile unit and the cars that conform the unit: Sampling car and analysis car: The sampling and equipment are took into account as well

78

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)

Document available in extended abstract form only. In environmental studies, Natural Organic Matter (NOM) plays a key role on the bioavailability and the toxicity of metallic compounds. If one wants to evaluate the mobility of heavy metals / radionuclides, which is in natura in most of the cases dependant on their interactions with NOM. One part of the organic inventory in the Callovo-Oxfordian formation (COx) exists as small dissolved compounds in the pore water but the weak content and the weak porosity of the formation (? 8 % of water in weight) make the complexation study with metal ions difficult. One part of the organic matter attached to the sediment (? 1 % in weight) can be mobilized in a synthetic pore water 1 and can be considered as similar to in situ pore water dissolved organic matter (DOM) regarding its size distribution. The collection of clay pore water has been done through percolation experiment, a unique and original experimental process developed to get pore water from a core sample,that have been described previously. From these experiments, it was shown that mobile organic matter concentration could reach 0.01 mol C/L by application of a pressure gradient up to 100 bars. Since part of the OM from the COx is known to be sensitive to air oxidation, the characterization and quantification of DOM were then performed under anoxic conditions (about - 170 mV vs Standard Hydrogen Electrode SHE). In addition, the chemical composition of NOM contained 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 compo

79

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

80

Mobile Phones, Financial Inclusion, and Growth  

OpenAIRE

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 fin...

Mihasonirina Andrianaivo; Kangni Kpodar

2012-01-01

81

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

OpenAIRE

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)...

Barr Margo L; van Ritten Jason J; Steel David G; Thackway Sarah V

2012-01-01

82

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

83

Design and performance of a direct-reading, multichannel spectrometer for the determination of chlorinated purgeable organic compounds by flame infrared-emission spectrometry.  

Science.gov (United States)

The feasibility of determining chlorinated, purgeable organic compounds (POCs) in aqueous samples by flame infrared-emission (FIRE) spectrometry was evaluated with a specially designed, multichannel, dispersive spectrometer having sufficient resolving power to prevent interference from large amounts of non-halogenated POCs that could also be present in the sample. The polychromator was based on a Czerny-Turner optical mounting with a 0.15-m focal length, a nominal focal ratio of f/3, and a reciprocal linear dispersion of 0.15 mum/mm in the first order. The HCl and CO(2) infrared emission bands (3.77 and 4.42 mum, respectively) were monitored in two analytical channels, while a third reference channel, used for background subtraction, monitored the H(2)O background emission at 2.8 mum. Instrumental performance was evaluated with dichloromethane, trichloromethane, trichloroethylene, 1,1,2,2-tetrachloroethane and monochlorobenzene as test compounds, and parameters such as the linear dynamic range, reproducibility, detection limit and signal-to-noise ratio, and extent of spectral crosstalk between channels were determined. The feasibility of performing a quantitative analysis of a two-component mixture of dichloromethane and trichloromethane at trace levels was demonstrated. PMID:18965190

Kubala, S W; Tilotta, D C; Busch, M A; Busch, K W

1991-06-01

84

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

85

Mobile Advertising  

OpenAIRE

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

86

Mobile Election  

OpenAIRE

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

87

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

88

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

89

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

90

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

91

Direct-reading type microwave interferometer  

International Nuclear Information System (INIS)

A new microwave interferometer has been developed and applied to the electron density measurement on JIPP T-II plasma device. The interferometer generates an output voltage proportional to the number of fringe shifts and also output pulses which indicate the change of electron density for the convenience of data processing, where the resolution is a quarter of fringe shift. The principle is based on the digitization of fringe shifts utilizing the phase detection of microwave signals with two-level modulation of source frequency. With this system and 70 GHz microwave source, a change of electron density as rapid as about 2 x 1013 cm-3 in 1 ms has been measured at the tokamak operation of JIPP T-II. (auth.)

92

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, Günter

2014-01-01

93

Mobility Challenges  

OpenAIRE

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 pr...

Jensen, Ole B.; Lassen, Claus

2011-01-01

94

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

95

Mobile Semiotics - signs and mobilities  

DEFF Research Database (Denmark)

This paper is about how to comprehend the mobile condition of contemporary life with a particular view to the signifying dimension of the environment and its ‘readability’. The paper explores the potentials of semiotics and its relationship to the new mobilities literature. The theoretical scope is therefore an attempt to mobilize semiotics by drawing on a central body of theory within and adjacent to the discipline. For instance the founding works of C. S. Peirce will be related to the contemporary notions of ‘geosemiotics’ by Scollon & Scollon. The paper’s theoretical claim is that semiotics hold a potential for mobilities studies if the awareness of seeing the environment as a semiotic layer and system can be sensitized to the insights of the ‘mobilities turn’. Empirically the paper tentatively explores the usefulness of a mobile semiotics approach to cases such as street signage, airport design, and wayfiding systems.

Jensen, Ole B.

96

Mobile Forces  

Science.gov (United States)

The application of engineering principles is explored in the creation of mobiles. As students create their own mobiles, they take into consideration the forces of gravity and convection air currents. They learn how an understanding of balancing forces is important in both art and engineering design.

Integrated Teaching and Learning Program,

97

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)

98

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

99

User Experience Evaluation in the Mobile Context  

Science.gov (United States)

Multimedia services on mobile devices are becoming increasingly popular. Whereas the mobile phone is the most likely platform for mobile TV, PDAs, portable game consoles, and music players are attractive alternatives. Mobile TV consumption on mobile phones allows new kinds of user experiences, but it also puts designers and researchers in front of new challenges. On the one hand, designers have to take these novel experience potentials into account. On the other hand, the right methods to collect user feedback to further improve services for the mobile context have to be applied. In this chapter the importance of user experience research for mobile TV within the mobile context is highlighted. We present how different experience levels can be evaluated taking different mobile context categories into account. In particular, we discuss the Experience Sampling Method (ESM), which seems to be a fruitful approach for investigating user TV experiences.

Obrist, Marianna; Meschtscherjakov, Alexander; Tscheligi, Manfred

100

Staying Mobile  

Science.gov (United States)

... the Independent Care System of NY addresses the importance of selecting the wheeled mobility device that best ... Design These regulations apply to places of public accommodation. Learn More Learn More Publication Driving with Multiple ...

101

Irish mobilities  

OpenAIRE

The ‘mobility turn’ in sociology challenges our easy equation of ‘society’ with a given territorial area. The chapter begins by examining the arguments involved, pointing out how much sociological theorising about ‘fluidity’ (e.g. Bauman) shares common assumptions with the extreme free market globalisation writers (e.g. Freeman). Using arguments from the sociology of technology, it is argued that we need to examine how new mobilities are created and also constrained, the uses that...

Wickham, James John Rufus

2007-01-01

102

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

103

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

104

Designing Mobilities  

DEFF Research Database (Denmark)

How is the width of the pavement shaping the urban experience? How is the material design of transport infrastructure and mobile technology affording social interaction in everyday life spaces? How do people inhabit these spaces with their bodies and in accordance to social and cultural norms? These are some of the questions that this book raises in order to explore how the design of mobile sites and situations affect people's everyday life. The book takes point of departure in the author's book 'Staging Mobilities' (Routledge, 2013) in which it is argued that mobility is much more than simple movements of people, goods, and information 'from A to B'. Accordingly, the way people, goods, and information moves shapes the way we understand our built environment, other consociates, and ourselves. The book contributes with a new and critical-creative gaze on what might seem to be trivial and mundane acts of moving in the city. 'Designing Mobilities' is based on more than a decade of academic research by Professor of Urban Theory, Ole B. Jensen and a must-read for students and scholars with an interest in urban studies, urban design, architecture, urban planning, transport planning and geography, urban geography, anthropology, design studies, interaction design, and urban sociology.

Jensen, Ole B.

2014-01-01

105

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

106

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

107

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.

American Museum of Natural History

2012-06-26

108

A MOBILITY MODEL FOR MOSFET DEVICE DIMULATION  

OpenAIRE

The device characteristics of sub-micron MOS transistors depend strongly on the mobility of the charge carriers in the inversion layer. A new low lateral field mobility model for the normal field dependence will be presented. Good agreement was found between the predicted and measured mobilities for a large variety of samples. The model was successfully incorporated into a two - dimensional device simulation program which gave predictions agreeing well with experimental data.

Walker, A.; Woerlee, P.

1988-01-01

109

Intergenerational Income Mobility and Family Dissolution  

OpenAIRE

This study examines the intergenerational income mobility between intact families and families disrupted due to divorce or parental death. The data samples consist of children born in 1960 and 1970 along with their biological fathers and mothers. The income mobility is explored between sons and fathers, sons and mothers, daughters and fathers and daughters and mothers. The results of the analyses show that the income mobility differs between intact and disrupted families where the deviations ...

Rieck, Karsten Marshall Elseth

2008-01-01

110

Mobile TV  

OpenAIRE

This article explores how mobile television is being constructed and understood, focusing on four concepts used in contemporary public debate to discuss the technology, namely 'TV in your pocket', 'TV anytime, anywhere', 'TV on the go', and 'Enhanced TV'. Drawing on an analysis of industry reports, conference proceedings, websites, academic studies, press coverage, results of trials, advertisements and expert interviews, we examine the ways in which experts involved in the production, marketi...

Orgad, Shani

2009-01-01

111

Exploring the Mobility of Mobile Phone Users  

OpenAIRE

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

112

CBRN mobile laboratories in Italy  

Science.gov (United States)

The paper describes the experiences in Italy with the CBRN (Chemical Biological Radiological Nuclear) defense mobile laboratories. These laboratories were constructed by the Italian Army and the Italian Fire Brigades. The purpose of these mobile laboratories is to allow quick transport of the labs to the area of crisis in order to support emergency response in case of CBRN events. The differences between two alternative solutions will be developed in the paper. The first solution is when the lab is to be located in the "dangerous area" (this solution was chosen by the Italian Army) and the alternative approach is to place the mobile lab just outside the dangerous area (this approach was selected by the Italian Fire Brigades). One of the most important devices inside the lab is the isolator (also called "glove box") which allows safe ingress and handling of the "suspicious" samples from the external environment. The isolator has a special chamber for transfer of the sample from the outside. The pressure of the isolator is permanently kept below the air pressure inside the lab by means of one (or more) fan. The operators perform the sample preparations or part of the analysis by handling the sample with the gloves. The material flow inside the lab will be described depending on the kind of identification analysis to be done on the samples. Other devices installed on the mobile CBRN laboratories are: biohazard hood (UE regulation, containment level 2); autoclave; freezer; cleaning skid (tanks, pumps, etc.).

Mari, Giorgio; Giraudi, Giampaolo; Bellino, Mariarosa; Pazienza, Michele; Garibaldi, Claudio; Lancia, Corrado

2009-05-01

113

Social mobility and spatial mobility  

OpenAIRE

There is no subject more central to sociology than social mobility.1 The degree to which modern industrialized societies enable talented, ambitious or lucky individuals to move up in status, or conversely the extent to which they reproduce inherited inequalities or social hierarchies from one generation to the next, are questions that still dominate much of the empirical mainstream of the discipline under the general rubric of stratification. Some of the most longstanding and detailed debates...

Favell, Adrian; Recchi, Ettore

2011-01-01

114

Mobile resonance enhanced multiphoton ionisation-time-of-flight mass spectrometer with a novel hybrid laser desorption/molecular beam ion source for rapid detection of aromatic trace compounds from gas phase and solid samples.  

Science.gov (United States)

A mobile, field applicable resonance enhanced multiphoton ionisation-time-of-flight mass spectrometer (REMPI-TOFMS) for direct-inlet gas-phase analysis as well as for characterisation of solid samples, has been developed. For solid-sample analysis, laser desorption (LD) with IR-laser pulses is used for volatilisation of the neutral analytes from a target in the ion source prior to REMPI-TOFMS analysis. For direct inlet gas-phase analysis, a needle gas inlet is used and the formed molecular beam is REMPI-ionised directly in the ion source. A special ion source was developed, which can be rapidly interchanged between the REMPI-TOFMS and the LD-REMPI-TOFMS modes. The system is equipped with a tuneable optical parametrical oscillator (OPO)-laser system. The analytical properties are characterised for both modes of operations. In both cases, analytical performance is similar to that achieved with instruments specifically designed for either gas-phase or solid-phase characterisation. Results from field measurements of a wood combustion flue gas of a 174 kW bio mass furnace are given. Gas-phase analysis was applied for time-resolved on-line REMPI-TOFMS of the semi-volatile aromatic flue gas constituents. The low-volatile aromatic compounds, which were precipitated with the particulate matter in the filtering unit of the sampling train, were characterised by direct LD-REMPI-TOFMS of the glass fibre filter material. By combining the gas-phase and particulate results a rather comprehensive characterisation of the aromatic species present in the flue gas (i.e. aerosol--gas phase plus particulate matter) was achieved. PMID:15595650

Hauler, T E; Boesl, U; Kaesdorf, S; Zimmermann, R

2004-11-26

115

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.

116

Role of indigenous arsenate and iron(III) respiring microorganisms in controlling the mobilization of arsenic in a contaminated soil sample.  

Science.gov (United States)

In this study two different treatment options were investigated for the release of arsenic from a contaminated soil sample. The first option was based on the "bioaugmentation" principle and involved addition of a pure Fe(III)-reducing culture, i.e. Desulfuromonas palmitatis. The second option consisted in the "biostimulation" of indigenous bacteria and involved simple addition of nutrients. Due to the strong association of As with soil ferric oxides, the reductive dissolution of soil oxides by D. palmitatis lead to 45 % arsenic release in solution (2.15 mM). When only nutrients were supplied to the soil, the same amounts of Fe and As were dissolved with slower rates and most aqueous As was found to be in the trivalent state, indicating the presence of arsenate reducing species. The arsenate reducing microorganisms were enriched with successive cultures, using Na2HAsO4 as electron acceptor. The phylogenetic analysis revealed that the enriched microbial consortium contained Desulfosporosinus species, which are known arsenate reducers. PMID:25588567

Vaxevanidou, K; Christou, C; Kremmydas, G F; Georgakopoulos, D G; Papassiopi, N

2015-03-01

117

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

118

Mobile Scientific Calculator  

OpenAIRE

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

119

Accept mobile: a mobile tool for the SINMETRO accept information system  

OpenAIRE

Increasing demand of mobile applications for on-site data acquisition pushes the development of flexible and easy to use mobile tools, with great advantages over the traditional computer-based approaches. The Accept System from SINMETRO allows data gathering for quality control, in the form of Inspection sheets. Such tool allows quality assurance by monitoring some samples of a given material, for instance milk, wine, and even maintenance management. This paper presents a mobile applicatio...

Caldeira, Joa?o; Dias, Edgar; Paulo, Bruno; Neves, Paulo

2009-01-01

120

Mobile Phone as Pedagogical Tools: Are Teachers Ready?  

OpenAIRE

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 als...

Issham Ismail; Siti Norbaya Azizan; Nizuwan Azman

2013-01-01

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

Mobile Operating Systems  

OpenAIRE

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

123

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

124

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

125

Mobile, flexible user interfaces  

OpenAIRE

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

126

Mobile and contextual learning  

OpenAIRE

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, mp...

Agnes Kukulska-Hulme; Mike Sharples

2009-01-01

127

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

128

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

129

MOBILE BUSINESS APPROACH BASED ON MOBILE AGENT  

OpenAIRE

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 es...

Ahmed Aloui; Okba Kazar

2011-01-01

130

Mobile Commerce and Related Mobile Security Issues  

OpenAIRE

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, Rugved Mehta

2013-01-01

131

Mobility Management Framework  

CERN Document Server

This paper investigates mobility management strategies from the point of view of their need of signalling and processing resources on the backbone network and load on the air interface. A method is proposed to model the serving network and mobile node mobility in order to be able to compare the different types of mobility management algorithms. To obtain a good description of the network we calculate descriptive parameters from given topologies. Most mobility approaches derived from existing protocols are analyzed and their performances are numerically compared in various network and mobility scenarios. We developed a mobility management framework that is able to give general designing guidelines for the next generation mobility managements on given network, technology and mobility properties. With our model an operator can design the network and tune the parameters to obtain the optimal implementation of course revising existing systems is also possible. We present a vertical handover decision method as a sp...

Fulop, Peter; Imre, Sandor

2008-01-01

132

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.

133

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

134

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

135

Mobile Router Technology Development  

Science.gov (United States)

Cisco Systems and NASA have been performing joint research on mobile routing technology under a NASA Space Act Agreement. Cisco developed mobile router technology and provided that technology to NASA for applications to aeronautic and space-based missions. NASA has performed stringent performance testing of the mobile router, including the interaction of routing and transport-level protocols. This paper describes mobile routing, the mobile router, and some key configuration parameters. In addition, the paper describes the mobile routing test network and test results documenting the performance of transport protocols in dynamic routing environments.

Ivancic, William D.; Stewart, David H.; Bell, Terry L.; Kachmar, Brian A.; Shell, Dan; Leung, Kent

2002-01-01

136

Head First Mobile Web  

CERN Document Server

Despite the huge number of mobile devices and apps in use today, your business still needs a website. You just need it to be mobile. Head First Mobile Web walks you through the process of making a conventional website work on a variety smartphones and tablets. Put your JavaScript, CSS media query, and HTML5 skills to work-then optimize your site to perform its best in the demanding mobile market. Along the way, you'll discover how to adapt your business strategy to target specific devices. Navigate the increasingly complex mobile landscapeTake both technical and strategic approaches to mobile

Gardner, Lyza; Grigsby, Jason

2011-01-01

137

Undergraduate Attitudes and Expectations for Mobile Banking  

OpenAIRE

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 stud...

Hanudin Amin; Mohamad Rizal Abdul Hamid; Geoffrey Harvey Tanakinjal; Suddin Lada

2006-01-01

138

Cooperative Distributed Sensors for Mobile Robot Localization  

OpenAIRE

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 ...

Zhiwei Liang; Songhao Zhu

2010-01-01

139

Ion mobility sensor system  

Science.gov (United States)

An ion mobility sensor system including an ion mobility spectrometer and a differential mobility spectrometer coupled to the ion mobility spectrometer. The ion mobility spectrometer has a first chamber having first end and a second end extending along a first direction, and a first electrode system that generates a constant electric field parallel to the first direction. The differential mobility spectrometer includes a second chamber having a third end and a fourth end configured such that a fluid may flow in a second direction from the third end to the fourth end, and a second electrode system that generates an asymmetric electric field within an interior of the second chamber. Additionally, the ion mobility spectrometer and the differential mobility spectrometer form an interface region. Also, the first end and the third end are positioned facing one another so that the constant electric field enters the third end and overlaps the fluid flowing in the second direction.

Xu, Jun; Watson, David B.; Whitten, William B.

2013-01-22

140

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)

141

Mobile Content Revenue Assurance  

OpenAIRE

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

142

Mobile Claims Management  

OpenAIRE

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

143

Mobile Learning Applications Audit  

OpenAIRE

While mobile learning (m-learning) applications have proven their value in educational activities, there is a need to measure their reliability, accessibility and further more their trustworthiness. Mobile devices are far more vulnerable then classic computers and present inconvenient interfaces due to their size, hardware limitations and their mobile connectivity. Mobile learning applications should be audited to determine if they should be trusted or not, while multimedia contents like auto...

Pocatilu, Paul; Pocovnicu, Adrian

2010-01-01

144

Mobile Services Adoption Model  

OpenAIRE

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

145

IMC - Implementing Mobile Code  

OpenAIRE

IMC is a Java framework for implementing distributed applications possibly with code mobility. The name is due to the fact that originally this framework was built for helping implementing the run time system of mobile calculi implementation, i.e., calculi accessing remote resources and nodes, and, possibly, exchanging code, processes and mobile agents. Of course, if you don't need code mobility features you can simply ignore them and use IMC for building any distributed and network application.

Bettini, Lorenzo

2006-01-01

146

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

147

Ion mobility sensor  

Science.gov (United States)

An ion mobility sensor which can detect both ion and molecules simultaneously. Thus, one can measure the relative arrival times between various ions and molecules. Different ions have different mobility in air, and the ion sensor enables measurement of ion mobility, from which one can identify the various ions and molecules. The ion mobility sensor which utilizes a pair of glow discharge devices may be designed for coupling with an existing gas chromatograph, where various gas molecules are already separated, but numbers of each kind of molecules are relatively small, and in such cases a conventional ion mobility sensor cannot be utilized.

Koo, Jackson C.; Yu, Conrad M.

2005-08-23

148

Mobile intention recognition  

CERN Document Server

Mobile Intention Recognition addresses problems of practical relevance for mobile system engineers: how can we make mobile assistance systems more intelligent? How can we model and recognize patterns of human behavior which span more than a limited spatial context? This text provides an overview on plan and intention recognition, ranging from the late 1970s to very recent approaches. This overview is unique as it discusses approaches with respect to the specificities of mobile intention recognition. This book covers problems from research on mobile assistance systems using methods from artific

Kiefer, Peter

2011-01-01

149

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

150

Supersampling and network reconstruction of urban mobility  

CERN Document Server

Understanding human mobility is of vital importance for urban planning, epidemiology, and many other fields that aim to draw policies from the activities of humans in space. Despite recent availability of large scale data sets related to human mobility such as GPS traces, mobile phone data, etc., it is still true that such data sets represent a subsample of the population of interest, and then might give an incomplete picture of the entire population in question. Notwithstanding the abundant usage of such inherently limited data sets, the impact of sampling biases on mobility patterns is unclear -- we do not have methods available to reliably infer mobility information from a limited data set. Here, we investigate the effects of sampling using a data set of millions of taxi movements in New York City. On the one hand, we show that mobility patterns are highly stable once an appropriate simple rescaling is applied to the data, implying negligible loss of information due to subsampling over long time scales. On...

Sagarra, Oleguer; Santi, Paolo; Diaz-Guilera, Albert; Ratti, Carlo

2015-01-01

151

Key determinants of students’ mobile phone choice  

Directory of Open Access Journals (Sweden)

Full Text Available As there is still only limited research on students brand choice of mobile phones, the focus of this study was to ascertain drivers of tertiary students’ mobile phone brand choice in Ghana. Using a structured questionnaire, data was collected from a random sample of 840 students from three tertiary institutions in Ghana. The study revealed that the most significant determinant of the students brand choice of mobile phones was perceived quality (p0.05. The study concludes that in spite of their economic handicaps, students brand choice was driven most by perceived quality and not price. Recommendations on how information technology manufacturers’ particularly mobile phone companies and marketers can exploit these drivers to sustain and improve their brand equity among students have been made.

Michael Dzigbordi Dzandu

2014-08-01

152

Mobile healthcare informatics.  

Science.gov (United States)

Advances in wireless technology give pace to the rapid development of mobile applications. The coming mobile revolution will bring dramatic and fundamental changes to our daily life. It will influence the way we live, the way we do things, and the way we take care of our health. For the healthcare industry, mobile applications provide a new frontier in offering better care and services to patients, and a more flexible and mobile way of communicating with suppliers and patients. Mobile applications will provide important real time data for patients, physicians, insurers, and suppliers. In addition, it will revolutionalize the way information is managed in the healthcare industry and redefine the doctor - patient communication. This paper discusses different aspects of mobile healthcare. Specifically, it presents mobile applications in healthcare, and discusses possible challenges facing the development of mobile applications. Obstacles in developing mobile healthcare applications include mobile device limitations, wireless networking problems, infrastructure constraints, security concerns, and user distrust. Research issues in resolving or alleviating these problems are also discussed in the paper. PMID:16777784

Siau, Keng; Shen, Zixing

2006-06-01

153

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

154

Mobility in single crystal Bi2Se3.  

Science.gov (United States)

Galvanomagnetic effects are measured in p-type Bi2Se3 in magnetic fields to 8 tesla. Both Hall and conductivity mobilities are determined between 4.2 and 300 K. Carrier compensation, as well as nearly equal electron and hole mobilities are found in samples with approximately 10 to the 25th power per cu m 3 total carrier concentration.

Woollam, j. A.; Beale, H.; Spain, I. L.

1972-01-01

155

Mobility versus quality in two-dimensional semiconductor structures  

Science.gov (United States)

We consider theoretically effects of random charged impurity disorder on the quality of high-mobility two-dimensional (2D) semiconductor structures, explicitly demonstrating that the sample mobility is not necessarily a reliable or universal indicator of the sample quality in high-mobility modulation-doped 2D GaAs structures because, depending on the specific system property of interest, mobility and quality may be controlled by different aspects of the underlying disorder distribution, particularly since these systems are dominated by long-range Coulomb disorder from both near and far random quenched charged impurities. We show that in the presence of both channel and remote charged impurity scattering, which is a generic situation in modulation-doped high-mobility 2D carrier systems, it is quite possible for higher (lower) mobility structures to have lower (higher) quality as measured by the disorder-induced single-particle level broadening. In particular, we establish that there is no reason to expect a unique relationship between mobility and quality in 2D semiconductor structures as both are independent functionals of the disorder distribution, and are therefore, in principle, independent of each other. Using a simple, but reasonably realistic, "2-impurity" minimal model of the disorder distribution, we provide concrete examples of situations where higher (lower) mobilities correspond to lower (higher) sample qualities. We discuss experimental implications of our theoretical results and comment on possible strategies for future improvement of 2D sample quality.

Das Sarma, S.; Hwang, E. H.

2014-07-01

156

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

157

Mobile Immersive Music  

OpenAIRE

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 Trillium Engine  

OpenAIRE

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

159

Mobile service platform competition  

OpenAIRE

Mobile service platforms are becoming particularly important as play a significant role in consumers' decisions to accept, adopt and use mobile services and applications. Literature on mobile service platforms focuses mainly on strategic issues in managing multi-sided platforms and economic issues of two sided markets, still literature is highly conceptual and empirical research on the awareness and preferences of consumers is lacking. Yet, there is a lack of empirical research on platforms d...

Nikou, Shahrokh; Bouwman, Harry

2012-01-01

160

Gridless Overtone Mobility Spectrometry  

OpenAIRE

A novel overtone mobility spectrometry (OMS) instrument utilizing a gridless elimination mechanism and cooperative radio frequency confinement is described. The gridless elimination region uses a set of mobility-discriminating radial electric fields that are designed so that the frequency of field application results in selective transmission and elimination of ions. To neutralize ions with mobilities that do not match the field application frequency, active elimination regions radially defoc...

Zucker, Steven M.; Ewing, Michael A.; Clemmer, David E.

2013-01-01

161

NEXT GENERATION MOBILE COMPUTING?  

OpenAIRE

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

162

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

163

Programming the Mobile Web  

CERN Document Server

Today's market for mobile apps goes beyond the iPhone to include BlackBerry, Nokia, Windows Phone, and smartphones powered by Android, webOS, and other platforms. If you're an experienced web developer, this book shows you how to build a standard app core that you can extend to work with specific devices. You'll learn the particulars and pitfalls of building mobile apps with HTML, CSS, and other standard web tools. You'll also explore platform variations, finicky mobile browsers, Ajax design patterns for mobile, and much more. Before you know it, you'll be able to create mashups using Web 2.

Firtman, Maximiliano

2010-01-01

164

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

165

Trust in Mobile Commerce  

OpenAIRE

This paper describes how a citizen, in our case a user of a mobile phone, is confronted with several aspects of trust when he/she uses different mobile commercial objects in a digital world. In particular, the topic of m-commerce and how a client mitigates trust all the way from his/her mobile device to the merchant is dealt with. To assess the trust chain, especially in respect to privacy and data protection, objects (for example a voucher) are used to model the mobile commerce domain.

Kounelis, Ioannis; Loeschner, Jan

2012-01-01

166

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

167

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 grolains 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.

168

Mobile software on mobile hardware. Experiences with TACOMA on PDAs.  

OpenAIRE

In this paper, we present experiences from adding software mobility to mobile, hand-held computers. In particular, we have built TACOMA Lite, a mobile code system, for this environment. With TACOMA Lite installed, hand-held computers can host and execute mobile code. TACOMA Lite has been used as platform for several mobile code applications. Through experience with these applications, we have derived a 3-layer software architecture suitable for this type of mobile computing. We conclude that,...

Jacobsen, Kjetil; Johansen, Dag

1997-01-01

169

Attitudes of young Italians towards mobility experiences  

OpenAIRE

The research carried out by Euroguidance Italy aimed at exploring behaviours, practices and meanings attributed by Italian young people to international and national mobility experiences, outside their regional areas, for studying and working reasons. A sample of 1787 individuals, between the age of 15 and 30, living in different Italian regions were interviewed through the CATI methodology. The outcomes show that only 16% of the sample spent a period in studying and working abroad and only ...

Grimaldi, Anna; Franciosa, Giuliana; Fonzo, Concetta; Iorio, Anna

2009-01-01

170

Understanding mobile information needs  

OpenAIRE

In this paper we describe the results of a four-week diary study of mobile information needs, focusing on the intent behind mobile needs and the importance on context on such needs. We identified three key intents among diary entries: informational, geographical and personal information management (PIM). Furthermore, we found many of these information needs have high temporal and location dependencies.

Church, Karen; Smyth, Barry

2008-01-01

171

Wireless mobile Internet security  

CERN Document Server

  The mobile industry for wireless cellular services has grown at a rapid pace over the past decade. Similarly, Internet service technology has also made dramatic growth through the World Wide Web with a wire line infrastructure. Realization for complete wired/wireless mobile Internet technologies will become the future objectives for convergence of these technologies thr

Rhee, Man Young

2013-01-01

172

Mobility Test Article (MTA)  

Science.gov (United States)

A concept of a possible Lunar Roving Vehicle (LRV) built for NASA's Marshall Space Flight Center (MSFC). This Mobility Test Article (MTA) is one of many that provided data contributing to the design of the LRV, developed under the direction of MSFC. The LRV was designed to allow Apollo astronauts a greater range of mobility during lunar exploration missions.

1965-01-01

173

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

174

Mobile communications design fundamentals  

CERN Document Server

Revised and enlarged version that discusses how to design a mobile communications system. Comprehensively examines the mobile radio environment. Covers prediction of propagation loss, calculation and methods of reducing fades, interference, frequency plans and associated schemes, design parameters, signaling and channel access, cellular CDMA, microcell systems, and miscellaneous related systems. Contains chapter-by-chapter references and problems.

Lee, William C Y

2010-01-01

175

Mastering Mobile Security  

Science.gov (United States)

Without proper security, mobile devices are easy targets for worms, viruses, and so-called robot ("bot") networks. Hackers increasingly use bot networks to launch massive attacks against eCommerce websites--potentially targeting one's online tuition payment or fundraising/financial development systems. How can one defend his mobile systems against…

Panettieri, Joseph C.

2007-01-01

176

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

177

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

178

Passive sampling of ambient ozone by solid phase microextraction with on-fiber derivatization  

International Nuclear Information System (INIS)

The solid phase microextraction (SPME) device with the polydimethylsiloxane/divinylbenzene (PDMS/DVB) fiber was used as a passive sampler for ambient ozone. Both O-2,3,4,5,6-(pentafluorobenzyl)hydroxylamine hydrochloride (PFBHA) and 1,2-di-(4-pyridyl)ethylene (DPE) were loaded onto the fiber before sampling. The SPME fiber assembly was then inserted into a PTFE tubing as a passive sampler. Known concentrations of ozone around the ambient ground level were generated by a calibrated ozone generator. Laboratory validations of the SPME passive sampler with the direct-reading ozone monitor were performed side-by-side in an exposure chamber at 25 deg. C. After exposures, pyriden-4-aldehyde was formed due to the reaction between DPE and ozone. Further on-fiber derivatizations between pyriden-4-aldehyde and PFBHA were followed and the derivatives, oximes, were then determined by portable gas chromatography with electron capture detector. The experimental sampling rate of the SPME ozone passive sampler was found to be 1.10 x 10-4 cm3 s-1 with detection limit of 58.8 ?g m-3 h-1. Field validations with both SPME device and the direct-reading ozone monitor were also performed. The correlations between the results from both methods were found to be consistent with r = 0.9837. Compared with other methods, the current designed sampler provides a convenient and sensitive tool for the exposure assessments of ozonesure assessments of ozone

179

Passive sampling of ambient ozone by solid phase microextraction with on-fiber derivatization.  

Science.gov (United States)

The solid phase microextraction (SPME) device with the polydimethylsiloxane/divinylbenzene (PDMS/DVB) fiber was used as a passive sampler for ambient ozone. Both O-2,3,4,5,6-(pentafluorobenzyl)hydroxylamine hydrochloride (PFBHA) and 1,2-di-(4-pyridyl)ethylene (DPE) were loaded onto the fiber before sampling. The SPME fiber assembly was then inserted into a PTFE tubing as a passive sampler. Known concentrations of ozone around the ambient ground level were generated by a calibrated ozone generator. Laboratory validations of the SPME passive sampler with the direct-reading ozone monitor were performed side-by-side in an exposure chamber at 25 degrees C. After exposures, pyriden-4-aldehyde was formed due to the reaction between DPE and ozone. Further on-fiber derivatizations between pyriden-4-aldehyde and PFBHA were followed and the derivatives, oximes, were then determined by portable gas chromatography with electron capture detector. The experimental sampling rate of the SPME ozone passive sampler was found to be 1.10 x 10(-4) cm(3) s(-1) with detection limit of 58.8 microg m(-3) h(-1). Field validations with both SPME device and the direct-reading ozone monitor were also performed. The correlations between the results from both methods were found to be consistent with r=0.9837. Compared with other methods, the current designed sampler provides a convenient and sensitive tool for the exposure assessments of ozone. PMID:18291125

Lee, I-Su; Tsai, Shih-Wei

2008-03-10

180

What is mobile in entrepreneurship?  

OpenAIRE

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, åsa

2008-01-01

181

Innovation for future mobile services  

OpenAIRE

The mobile telecom industry has developed a substantial amount of mobile services that have attracted few end-users. The new mobile telephony systems will offer even more possibilities to develop mobile services, and frequent use of mobile services is necessary to warrant the high investment cost in those systems. But how do we then meet users and their needs with continued development of mobile services and prod-ucts? In this project we have started a work to find new...

Helgeson, Bo; Hardemo, Isa; Olofsson, Sarah; Pettersson, Ma?rten; Hederstierna, Anders; Wrenne, Anders; Hallqvist, Klas

2003-01-01

182

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

183

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

Switz, Neil A; D'Ambrosio, Michael V; Fletcher, Daniel A

2014-01-01

184

Robustness analyses for repeated mobility surveys in outdoor advertising  

OpenAIRE

A growing number of companies use mobility data in their day-to-day business. However, as the data grows older, new data has to be collected in order to keep applications up-to-date. Consequently, it is of great importance to know the impact that a different mobility sample may cause. This aspect of analysis has been largely neglected in mobility data mining research so far. In this paper we therefore analyze the robustness of performance measures with respect to a changed GPS sample in outdo...

Hecker, Dirk; Ko?rner, Christine; May, Michael

2011-01-01

185

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

186

Prevalence of antibacterial resistant bacterial contaminants from mobile phones of hospital inpatients  

OpenAIRE

Mobile phones contaminated with bacteria may act as fomites. Antibiotic resistant bacterial contamination of mobile phones of inpatients was studied. One hundred and six samples were collected from mobile phones of patients admitted in various hospitals in Jazan province of Saudi Arabia. Eighty-nine (83.9%) out of 106 mobile phones were found to be contaminated with bacteria. Fifty-two (49.0%) coagulase-negative Staphylococcus, 12 (11.3%) Staphylococcus aureus, 7 (6.6%) Enterobacter cloacae, ...

Vinod Kumar, B.; Hobani, Yahya Hasan; Abdulhaq, Ahmed; Jerah, Ahmed Ali; Hakami, Othman M.; Eltigani, Magdeldin; Bidwai, Anil K.

2014-01-01

187

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

188

Aero particles characterization emitted by mobile sources  

International Nuclear Information System (INIS)

In our country, the mobile sources that conform most of the emissions at the atmosphere, are concentrated on the urban areas. For the present work, samples coming from the escapes of terrestrial transport were obtained, such as: passenger buses, load transport and particular vehicles of the Metropolitan area of the Toluca valley. The material was analyzed by means of scanning electron microscopy of low vacuum and X-ray diffraction. The objective was to characterize the emitted particles by mobile sources, morphological and chemically to know the structure, size and elements that compose them. (Author)

189

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

190

Cooperative Mobile Web Browsing  

DEFF Research Database (Denmark)

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 trafic 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. Copyright (C) 2009 G. P. Perrucci et al.

Perrucci, GP; Fitzek, FHP

2009-01-01

191

Warehousing Massive Mobile Datasets  

Directory of Open Access Journals (Sweden)

Full Text Available Nowadays, scientists can collect and analyze massive mobile data generated by various sensors and applications of smart phones. smart phones have become an important platform for the understanding of social activities, such as community detection, social dynamics and influence. It is extremely important to store and retrieve mobile data efficiently for various data mining tasks. In this paper, we propose Mobile Data Warehouse (MobileDW model which is based on GraphChi, a system designed for large-scale graph computation on one PC. We propose multi-shard data structure and Time-based Parallel Sliding Windows (TPSW to store Social data such as call logs and SMS. We further propose Mobile Index (MIndex structure and Mobile Position Compression Algorithm (MPCA to warehouse Position data such as GPS, Bluetooth etc. The MIndex structure can compress Position data significantly. The data compression process is based on the following observations: (1 The position of the individual users within a certain period of time often unchanged. (2 A crowd of people tend to move and stay together.  Experimental results demonstrate the effectiveness and efficiency of Mobile Data Warehouse.

Zhipeng Liu

2014-09-01

192

Mobile code security  

Science.gov (United States)

A highly secure mobile agent system is very important for a mobile computing environment. The security issues in mobile agent system comprise protecting mobile hosts from malicious agents, protecting agents from other malicious agents, protecting hosts from other malicious hosts and protecting agents from malicious hosts. Using traditional security mechanisms the first three security problems can be solved. Apart from using trusted hardware, very few approaches exist to protect mobile code from malicious hosts. Some of the approaches to solve this problem are the use of trusted computing, computing with encrypted function, steganography, cryptographic traces, Seal Calculas, etc. This paper focuses on the simulation of some of these existing techniques in the designed mobile language. Some new approaches to solve malicious network problem and agent tampering problem are developed using public key encryption system and steganographic concepts. The approaches are based on encrypting and hiding the partial solutions of the mobile agents. The partial results are stored and the address of the storage is destroyed as the agent moves from one host to another host. This allows only the originator to make use of the partial results. Through these approaches some of the existing problems are solved.

Ramalingam, Srikumar

2001-11-01

193

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

194

Editorial: Mobile (March 2010  

Directory of Open Access Journals (Sweden)

Full Text Available Open source software and hardware has become an accepted way of developing new and interesting applications in many information and communication technology domains: operating systems, databases, Web infrastructure, and applications. It's not surprising that with the increasing popularity of mobile handheld devices, users and researchers have explored the power of open approaches to providing innovative new applications and services in this domain. However, unlike personal computers and the Internet, mobile handsets were tightly controlled by mobile network operators (MNOs who developed a vertical ecosystem by integrating the communication infrastructure, the handheld device hardware, and often the applications installed on those devices. The software and protocols running the mobile communications infrastructure and devices are often standardized by membership-only bodies, where large MNOs and manufacturers have a predominant influence. These players invest significant financial resources into shaping the industry along their vision to gain a competitive advantage. A current example is the ongoing battle about the dominant radio access technology for 4G cellular systems: LTE vs. Wimax. These trends have changed recently. Companies such as Google, Nokia, or Openmoko and Industry Alliances such as the Open Handset Alliance are providing the core building blocks, both in hardware as well as software, of increasingly open mobile devices. This issue of the OSBR reviews the relevant trends in the open mobile platform space from a number of perspectives. As the articles in these issue show, there is a lot of exciting ongoing work that brings the power of open source development to the mobile space. This trend is not just confined to the mobile devices as there are also efforts in the development of open mobile infrastructure elements and whole systems.

Thomas Kunz

2010-02-01

195

Research in Mobile Intelligence Mobile Computing and Computational Intelligence  

CERN Document Server

* Focuses on learning patterns and knowledge from data generated by mobile users and mobile technology. * Covers research and application issues in applying computational intelligence applications to mobile computing. * Delivers benefits to a wide range of applications. * Introduces the state of the art of computational intelligence to the mobile paradigm

Yang, Laurence T

2010-01-01

196

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

197

Mobile ad hoc networking  

CERN Document Server

"Assimilating the most up-to-date information on research and development activities in this rapidly growing area, Mobile Ad Hoc Networking covers physical, data link, network, and transport layers, as well as application, security, simulation, and power management issues in sensor, local area, personal, and mobile ad hoc networks. Each of the book's sixteen chapters has been written by a top expert and discusses in-depth the most important topics in the field. Mobile Ad Hoc Networking is an excellent reference and guide for professionals seeking an in-depth examination of topics that also provides a comprehensive overview of the current state-of-the-art."--Jacket.

John Wiley & Sons

2004-01-01

198

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

199

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

200

Guest Editorial ~ Mobile Learning  

OpenAIRE

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

201

Abrechnung mobiler Mehrwertdienste  

OpenAIRE

The availability of appropriate payment functionality is an important condition for business profit of mobile commerce supply in B2C context. Value-added services are the most important subset of B2C mobile commerce and consist of a combination of content and data transfer. The payment occurs via bill of telecommunication services by the mobile network operator (MNO). If the content is not provided by the MNO but by a third party (content provider) a revenue sharing is necessary. There are th...

Pousttchi, Key

2003-01-01

202

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

203

Mobile technology and place  

CERN Document Server

An international roster of contributors come together in this comprehensive volume to examine the complex interactions between mobile media technologies and issues of place. Balancing philosophical reflection with empirical analysis, this book examines the specific contexts in which place and mobile technologies come into focus, intersect, and interact. Given the far-reaching impact of contemporary mobile technology use - and given the lasting importance of the concept and experiences of place - this book will appeal to a wide range of scholars in media and cultural studies, sociology, and phi

Wilken, Rowan

2013-01-01

204

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

205

5G Mobile Technology  

OpenAIRE

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 affordab...

Ms Reshma S Sapakal, Ms Sonali S. Kadam

2013-01-01

206

Mobile Database System: Role of Mobility on the Query Processing  

CERN Document Server

The rapidly expanding technology of mobile communication will give mobile users capability of accessing information from anywhere and any time. The wireless technology has made it possible to achieve continuous connectivity in mobile environment. When the query is specified as continuous, the requesting mobile user can obtain continuously changing result. In order to provide accurate and timely outcome to requesting mobile user, the locations of moving object has to be closely monitored. The objective of paper is to discuss the problem related to the role of personal and terminal mobility and query processing in the mobile environment.

Sharma, Samidha Dwivedi

2010-01-01

207

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

208

Virtuous mobility: moralising vs measuring geographical mobility in Africa  

OpenAIRE

Mobility practices, discourse and measurement need rethinking in an age of energy shortages, environmental anxiety and virtual mobility. Standard numerical indexes and other proxies for geographical mobility can be misleading, not least in formulating public policy. The extremes of spatial mobilities in Africa may require particularly sensitive consideration; the peculiar social, psychological and economic dimensions of geographical mobility on the continent certainly need registering. Yet th...

Pirie, G. H.

2009-01-01

209

Mobile Apps and Romanian Mobile Devices Users’ Preferences  

OpenAIRE

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 ...

Tutunea, Mihaela Filofteia

2014-01-01

210

Developing Mobile Collaborative Learning Applications for Mobile Users  

OpenAIRE

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 d...

Lee, Kwang B.

2011-01-01

211

Interactive TV meets Mobile Computing  

OpenAIRE

The talk presents some recent developments in interactive digital television and discusses the trends and challenges of bringing TV services to mobile devices. Two areas will be addressed: portable use of mobile devices to complement the TV set in the home and mobile TV services while on the move using mobile broadcasting technology.

Rauschenbach, Uwe

2005-01-01

212

Mobile Learning Applications Audit  

Directory of Open Access Journals (Sweden)

Full Text Available While mobile learning (m-learning applications have proven their value in educational activities, there is a need to measure their reliability, accessibility and further more their trustworthiness. Mobile devices are far more vulnerable then classic computers and present inconvenient interfaces due to their size, hardware limitations and their mobile connectivity. Mobile learning applications should be audited to determine if they should be trusted or not, while multimedia contents like automatic speech recognition (ASR can improve their accessibility. This article will start with a brief introduction on m-learning applications, then it will present the audit process for m-learning applications, it will iterate their specific security threats, it will define the ASR process, and it will elaborate how ASR can enhance accessibility of these types of applications.

Paul POCATILU

2010-01-01

213

Education and Social Mobility  

Science.gov (United States)

In egalitarian societies, the allocation of employment positions should approach random probability. It is from this perspective that the relationship between education and mobility is examined in this paper. (Author/RK)

Neelsen, John

1975-01-01

214

Mobile Augmented Reality Applications  

OpenAIRE

Augmented reality have undergone considerable improvement in past years. Many special techniques and hardware devices were developed, but the crucial breakthrough came with the spread of intelligent mobile phones. This enabled mass spread of augmented reality applications. However mobile devices have limited hardware capabilities, which narrows down the methods usable for scene analysis. In this article we propose an augmented reality application which is using cloud computi...

Prochazka, David; Stencl, Michael; Popelka, Ondrej; Stastny, Jiri

2011-01-01

215

Mobile Sensing Systems  

OpenAIRE

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

216

Indigenization of Urban Mobility  

OpenAIRE

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 ...

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

2014-01-01

217

Stem cell mobilization.  

Science.gov (United States)

Successful blood and marrow transplant (BMT), both autologous and allogeneic, requires the infusion of a sufficient number of hematopoietic progenitor/stem cells (HPCs) capable of homing to the marrow cavity and regenerating a full array of hematopoietic cell lineages in a timely fashion. At present, the most commonly used surrogate marker for HPCs is the cell surface marker CD34, identified in the clinical laboratory by flow cytometry. Clinical studies have shown that infusion of at least 2 x 10(6) CD34(+) cells/kg recipient body weight results in reliable engraftment as measured by recovery of adequate neutrophil and platelet counts approximately 14 days after transplant. Recruitment of HPCs from the marrow into the blood is termed mobilization, or, more commonly, stem cell mobilization. In Section I, Dr. Tsvee Lapidot and colleagues review the wide range of factors influencing stem cell mobilization. Our current understanding focuses on chemokines, proteolytic enzymes, adhesion molecules, cytokines and stromal cell-stem cell interactions. On the basis of this understanding, new approaches to mobilization have been designed and are now starting to undergo clinical testing. In Section II, Dr. Michele Cottler-Fox describes factors predicting the ability to mobilize the older patient with myeloma. In addition, clinical approaches to improving collection by individualizing the timing of apheresis and adjusting the volume of blood processed to achieve a desired product are discussed. Key to this process is the daily enumeration of blood CD34(+) cells. Newer methods of enumerating and mobilizing autologous blood HPCs are discussed. In Section III, Dr. John DiPersio and colleagues provide data on clinical results of mobilizing allogeneic donors with G-CSF, GM-CSF and the combination of both as relates to the number and type of cells collected by apheresis. Newer methods of stem cell mobilization as well as the relationship of graft composition on immune reconstitution and GVHD are discussed. PMID:14633793

Cottler-Fox, Michele H; Lapidot, Tsvee; Petit, Isabelle; Kollet, Orit; DiPersio, John F; Link, Dan; Devine, Steven

2003-01-01

218

Social mobility and fertility  

OpenAIRE

Intra- and inter-generational social mobility have in the past played an important role in attempts to explain fertility behaviour, and continue to do so today. The opinions expressed by social scientists in the first part of the 20th century are renewed and confirmed. More specifically: (1) intra-generational social mobility has been reinforced by the personal well-being aspirations and job careers of women; (2) status anxiety parents feel for their children pushes fertility down in large ar...

Gianpiero Dalla Zuanna

2007-01-01

219

Mobile Communication Evolution  

OpenAIRE

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 ...

Kuboye Bamidele Moses

2014-01-01

220

SMS Based Mobile Banking  

OpenAIRE

M-banking has one of the main division of m-commerce. Mobile banking services consists of information inquiry, notifications and alerts, applications and payment transfer.Mobile based application is used for connecting customer handset with bank server for all such services. Current M-banking applications used by banks are facing security challenges for payment transfer banks are using secure payment gateway and other security measures which increases cost and infrastructure for bank but majo...

Surapaneni Pujitha, B. Veera Mallu

2013-01-01

221

TIMED Spacecraft Mobile  

Science.gov (United States)

This is a mobile for learners to assemble, aimed at enhancing their knowledge of NASA spacecraft and scientific facts. Each hanging element of the mobile contains an image and one fact or scientific concept related to the TIMED (Thermosphere, Ionosphere, Mesosphere, Energetics, and Dynamics) spacecraft mission. The cover contains background information about NASA's TIMED mission and two language arts exercises to reinforce space science vocabulary.

2012-08-03

222

A mobile agent manager  

OpenAIRE

Friendliness on user interfaces has been mostly forgot in mobile agent research. In fact the multitude of problems that have to be solved have left this more "simple" piece of the package out of target. However, the success of technology comes also from this important layer in the product development. This paper describes an application that integrates monitoring data from the mobile agents environment, process and presents information in different ways according to different user requirement...

Lopes, Rui Pedro; Oliveira, Jose? Lui?s

2003-01-01

223

"Mobile Fashion" Application  

OpenAIRE

This master thesis investigates studies on fashion oriented people according to the "Outfit-Centric Accessories" concept. The outfit-centric accessories concept originated from recent research study by Juhlin and Zhang (2011) about mobile phone representation in fashion and Aesthetic of Interaction area of Human-Computer Interaction (HCI). The term outfit-centric accessories originated from clothing and wearer. In this concept an outfit is playing a role as the centerpiece and a mobile phone ...

Kashanipour, Morvarid

2012-01-01

224

Anthropometric Mobility During Childhood  

OpenAIRE

While childhood obesity has become a significant public health concern over the last few decades, knowledge concerning the origins of or persistence in childhood anthropometric measures is incomplete. Here, we utilize several nonparametric measures of mobility to assess the evolution of weight, height, and body mass index during early childhood. We find that mobility is quite high prior to primary school and then declines noticeably. However, there are important sources of heterogeneity, incl...

Millimet, Daniel L.; Tchernis, Rusty

2013-01-01

225

Being Mobile: Cognitive Multiplicity  

OpenAIRE

Being mobile has become crucial for the organization of our everyday work and life. New communications technologies provide the opportunity to organize activities more and more flexibly and effectively. However, this increasing ease of organizational activities has its special price: the traditional division between the different fields of activities - work and spare time, official engagement and privacy - and concomitant scheduling has started to break down. Mobile phones have often been con...

Kondor, Zsuzsanna

2006-01-01

226

Predicting mobile device battery life  

OpenAIRE

Mobile phones and other mobile devices have one resource in common that is essential to all of them: battery life. Once the battery is empty, the device is useless until it is recharged. Limited battery life has become an issue especially in the newest mobile devices. The evolution of mobile devices during the last ten years has changed them from mobile phones into multi-functional mobile computers. Today's mobile device can contain for example a web browser, a music player and a navigator. T...

Korhonen, Kaisa

2011-01-01

227

Mobile Computing Trends in Saudi Arabia: An Exploratory Study  

Directory of Open Access Journals (Sweden)

Full Text Available The main purpose of this research was to gain an understanding of the adoption behavior of mobile computing in Saudi Arabia. In particular, it aimed to acquire new insight into mobile computing trends, specifically in Saudi Arabia, in order to develop hypotheses and formulate precise criteria for mobile computing evaluation. In order to achieve these aims, the researcher created a focus group by recruiting eight participants with solid background knowledge of usability engineering and mobile computing. The focus group proposed a four-phase process: determination, qualification, categorization and evaluation of the mobile computing applications developed by Saudi organizations. During the determination phase, two hundred and twenty seven (n=227 mobile applications were determined as having been developed by organizations in Saudi Arabia. During the qualification phase, one hundred and forty two (n=142 mobile applications were qualified. Within the categorization phase, the experts categorized only the qualified applications into a two-level categorization hierarchy. Finally, in the evaluation phase, the qualified applications were evaluated in terms of purpose, platform, visual appearance, content, organization and usability. The results herein revealed that 43% of the mobile applications in Saudi Arabia were M-Government applications, while 57% were M-Business applications. In addition, the study proposed a sample of thirty six (n=36 applications as having statistical significance from all of the mobile applications in Saudi Arabia.

Mutlaq B. Alotaibi

2014-12-01

228

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

229

Mars sample return: Site selection and sample acquisition study  

Science.gov (United States)

Various vehicle and mission options were investigated for the continued exploration of Mars; the cost of a minimum sample return mission was estimated; options and concepts were synthesized into program possibilities; and recommendations for the next Mars mission were made to the Planetary Program office. Specific sites and all relevant spacecraft and ground-based data were studied in order to determine: (1) the adequacy of presently available data for identifying landing sities for a sample return mission that would assure the acquisition of material from the most important geologic provinces of Mars; (2) the degree of surface mobility required to assure sample acquisition for these sites; (3) techniques to be used in the selection and drilling of rock a samples; and (4) the degree of mobility required at the two Viking sites to acquire these samples.

Nickle, N. (editor)

1980-01-01

230

An investigation of the mobility separation of some peptide and protein ions using a new hybrid quadrupole/travelling wave IMS/oa-ToF instrument  

Science.gov (United States)

Ion mobility coupled with mass spectrometry has evolved into a powerful analytical technique for investigating the gas-phase structures of bio-molecules. Here we present the mobility separation of some peptide and protein ions using a new hybrid quadrupole/travelling wave ion mobility separator/orthogonal acceleration time-of-flight instrument. Comparison of the mobility data obtained from the relatively new travelling wave separation device with data obtained using various other mobility separators demonstrate that whilst the mobility characteristics are similar, the new hybrid instrument geometry provides mobility separation without compromising the base sensitivity of the mass spectrometer. This capability facilitates mobility studies of samples at analytically significant levels.

Pringle, Steven D.; Giles, Kevin; Wildgoose, Jason L.; Williams, Jonathan P.; Slade, Susan E.; Thalassinos, Konstantinos; Bateman, Robert H.; Bowers, Michael T.; Scrivens, James H.

2007-03-01

231

Presence experience in mobile gaming  

OpenAIRE

Wireless mobile gaming is becoming more popular. A growing number of people play computer games with small-screen mobile devices such as handheld computers, mobile phones and handheld game consoles. One reason to the success of these devices is that they provide the opportunity to play games nearly everywhere. However, despite of the popularity of mobile gaming, quite little is known about the game experience when people use mobile devices. For example, it could be hypothesized that the game ...

Laarni, Jari

2005-01-01

232

Security in Unlicensed Mobile Access  

OpenAIRE

Unlicensed Mobile Access (UMA) provides transparent access to 2G and 3G networks for Mobile Stations over the unlicensed radio interface. Unlicensed radio tehnologies such as Bluetooth or WLAN technology connects the Mobile Station to the fixed IP network of the home or office and delivers high bandwith to the Mobile Station. The purpose of this report is to examine if subscribers can feel as secure using UMA as they do when using any of the alternetive mobile technologies that UMA supports. ...

Eriksson, Martin

2005-01-01

233

Mobile concrete factory profiability analysis  

OpenAIRE

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

234

This is Mobile TV Broadcasting  

OpenAIRE

Mobile reception is a new feature evolved in TV broadcasting. Mobile reception requires a robust signal to overcome the complexity of mobile propagation channel. Though DVB-T, primarily intended for fixed terrestrial reception, has limited capacity for mobile TV broadcasting; addition of powerful ?Forward Error Correction?(MPE-FEC); new operational Mode-?4K? and new ?Time Slicing? technique for power conservation in the mobile handset, gave birth to a...

Paul K

2008-01-01

235

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

236

Sampling and Sample Preparation  

Science.gov (United States)

Quality attributes in food products, raw materials, or ingredients are measurable characteristics that need monitoring to ensure that specifications are met. Some quality attributes can be measured online by using specially designed sensors and results obtained in real time (e.g., color of vegetable oil in an oil extraction plant). However, in most cases quality attributes are measured on small portions of material that are taken periodically from continuous processes or on a certain number of small portions taken from a lot. The small portions taken for analysis are referred to as samples, and the entire lot or the entire production for a certain period of time, in the case of continuous processes, is called a population. The process of taking samples from a population is called sampling. If the procedure is done correctly, the measurable characteristics obtained for the samples become a very accurate estimation of the population.

Morawicki, Rubén O.

237

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

238

Compatibility Heuristics for Modern Mobile games. : Mobile games.Mobile Game testing  

OpenAIRE

The purpose of this study was to demonstrate ways to perform a compatibility test for a modern mobile game. These tests were performed by running a tastephone midlet to the mobile handset to determine its characteristics and the equivalent implementation.Compatibility check test was also aimed to help a specified mobile game application to run successfully into a mobile phone. Compatibility heuristics for modern mobile games was also designed to study the factors that should be considered...

Gitau, Paul

2010-01-01

239

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

240

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

241

Are mobile phones harmful?  

DEFF Research Database (Denmark)

There is increasing public interest in health risks of mobile phone use. Although there is a vast body of material on the biological effects of radiofrequency fields, current risk assessment is still limited. The article describes several hypotheses and results of biological effects such as thermal effect, genetic and carcinogenic effects and cancer related investigations. Mobile phones transmit and receive waves of frequencies mainly at 800-1800 MHz. Findings on the thermal effect of acute exposure to radiofrequency fields were consistent, resulting in an increase of cellular, tissue or body temperature by 1 degree C or more. Guidelines for risk limits are based on this thermal effect. Experimental investigation suggests that radiofrequency fields are not tumor initiators and that if they are related to carcinogenicity, this would be by tumor promotion or by increasing the uptake of carcinogens in cells. Implications of these experimental results on public health concerns are yet unclear. Few epidemiologicalstudies are available on the use of mobile phones or on the radiofrequency exposure and the development of cancer. Most of these studies have no or little quantitative exposure data and they are limited by the small number of observations. Large epidemiological studies are necessary in order to investigate the use of mobile phones on the development of cancer. It should be emphasized that even a small elevated risk may have a large implication for public health, as the use of mobile phones and the exposure is rapidly increasing.

Blettner, M; Berg, Gabriele

2000-01-01

242

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

243

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

244

EPRI Mobile Geothermal Chemical Analysis Trailer  

Energy Technology Data Exchange (ETDEWEB)

The EPRI Mobile Geothermal Chemical Analysis Trailer, fabricated by the Energy Systems Group of Rockwell International, is a modern well-equipped chemical analysis laboratory. This mobile laboratory, sketched in Figure 1, has complete capability for sampling of geothermal fluids and analysis of brine, steam, and noncondensible gases. The objective of the laboratory is to provide accurate onsite chemical analyses in a timely manner that results in preservation of the sample integrity and the efficient implementation of a test program. The laboratory is built on a standard 40-ft truck trailer bed. The trailer chassis has been modified to carry requisite gas cylinders, compressor, and vacuum pump equipment in undercarriage bins, and has been equipped with air-ride shock absorbers to minimize road vibrations.

Eaton, W.S.; Nealy, C.L.; Sudar, S.

1980-12-01

245

Mobile Robot Navigation  

DEFF Research Database (Denmark)

Abstract Robots will soon take part in everyone’s daily life. In industrial production this has been the case for many years, but up to now the use of mobile robots has been limited to a few and isolated applications like lawn mowing, surveillance, agricultural production and military applications. The research is now progressing towards autonomous robots which will be able to assist us in our daily life. One of the enabling technologies is navigation, and navigation is the subject of this thesis. Navigation of an autonomous robot is concerned with the ability of the robot to direct itself from the current position to a desired destination. This thesis presents and experimentally validates solutions for road classification, obstacle avoidance and mission execution. The road classification is based on laser scanner measurements and supported at longer ranges by vision. The road classification is sufficiently sensitive to separate the road from flat roadsides, and to distinguish asphalt roads from gravelled roads. The vision-based road detection uses a combination of chromaticity and edge detection to outline the traversable part of the road based on a laser scanner classified sample area. The perception of these two sensors are utilised by a path planner to allow a number of drive modes, and especially the ability to follow road edges are investigated. The navigation mission is controlled by a script language. The navigation script controls route sequencing, junction detection, junction crossing calculations and drive mode selection. The entire system is tested on a combination of narrow asphalt and gravelled roads connected by a number of junctions. Missions of up to 3km in length have been successfully completed using the described system. The main focus of the thesis has been the experimental validation of the implemented solutions and the ability of the methods to solve real world problems. The amount of software needed by an autonomous robot can be overwhelming. Software reuse and distributed development are therefore important issues. The thesis describes a new component architecture for robotics software that promotes software reuse and distributed development and maintenance.

Andersen, Jens Christian

2007-01-01

246

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

247

Instant XenMobile MDM  

CERN Document Server

Get to grips with a new technology, understand what it is and what it can do for you, and then get to work with the most important features and tasks. Written in a user friendly style, this guide will get readers up and running with XenMobile MDM.If you want to run your mobile enterprises on XenMobile, or work on a BYOD strategy within your organization, then this is the ideal book for you. XenMobile MDM comprehensively explores how to set up and use XenMobile to provision, secure, and manage mobile devices.

Lakhani, Aamir

2013-01-01

248

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

249

SMS Based Mobile Banking  

Directory of Open Access Journals (Sweden)

Full Text Available M-banking has one of the main division of m-commerce. Mobile banking services consists of information inquiry, notifications and alerts, applications and payment transfer.Mobile based application is used for connecting customer handset with bank server for all such services. Current M-banking applications used by banks are facing security challenges for payment transfer banks are using secure payment gateway and other security measures which increases cost and infrastructure for bank but major day-to-day banking applications are inquiries, notifications and alerts. The problem with current banking applications is that they send data directly to customer in plain text form compromising with security.We present SMS based secure mobile banking which enhances security with minimum cost. In this approach bank hides customer transaction data is secure SMS using AES symmetric cryptographic algorithm and send it customer application supported handset.Customer application decrypts data in secure manner

Surapaneni Pujitha*, B Veera Mallu

2013-04-01

250

Virtuous mobility: moralising vs measuring geographical mobility in Africa  

Directory of Open Access Journals (Sweden)

Full Text Available Mobility practices, discourse and measurement need rethinking in an age of energy shortages, environmental anxiety and virtual mobility. Standard numerical indexes and other proxies for geographical mobility can be misleading, not least in formulating public policy. The extremes of spatial mobilities in Africa may require particularly sensitive consideration; the peculiar social, psychological and economic dimensions of geographical mobility on the continent certainly need registering. Yet the exceptionalism of the African case is overdrawn and the developmentalism inherent in yearnings for more mobility is a short-term exaggeration. Revaluing totemic mechanised mobility is urgently required. The way we act on, and the way we think, talk and write about, geographical mobility needs reconceptualising in terms of fairness, equity, environmental justice, and human rights.

G. H. Pirie

2009-01-01

251

Mobile agents basic concepts, mobility models, and the tracy toolkit  

CERN Document Server

Mobile agents are software nomads that act as your personal representative, working autonomously through networks. They are able to visit network nodes directly using available computing power and are not limited by platform. This emerging field is now poised to become a cornerstone for new Web-based ubiquitous computing environments. Mobile Agents provides a practical introduction to mobile agent technology and surveys the state of the art in mobile agent research. Students and researchers can use the book as an introduction to the concepts and possibilities of this field and as an overview of ongoing research. Developers can use it to identify the capabilities of the technology to decide if mobile agents are the right solution for them. Practioners can also gain hands-on experience in programming mobile agents through exploration of the source code for a complete mobile agent environment available through the companion website.*Summarizes the state of the art in mobile agent research*Identifies the benefits...

Braun, Peter

2005-01-01

252

Barriers to Adoption of Mobile banking: Evidence from Ghana  

OpenAIRE

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

253

Mobility in n-doped wurtzite III-Nitrides  

OpenAIRE

A study of the mobility of n-doped wurtzite III-Nitrides is reported. We have determined the nonequilibrium thermodynamic state of the III-Nitrides systems driven far away from equilibrium by a strong electric field in the steady state, which follows after a very fast transient. The dependence of the mobility (which depends on the nonequilibrium thermodynamic state of the sample) on the electric field strength is derived, which decreases with the strength of electric field. We analyzed the co...

Rodrigues, C. G.; Freire, Valder N.; Vasconcellos, A?urea R.; Roberto Luzzi

2003-01-01

254

Consumer Attitude Toward Mobile Marketing in Bosnia and Herzegovina  

Directory of Open Access Journals (Sweden)

Full Text Available Driven by the ongoing evolution in mobile technologies and the increasing popularity of the internet, the mobile marketing is becoming more and more popular to marketers whose aim is definitely to promote their goods and services to the consumer. Since many people are still unaware of the potential of marketing via mobile devices this research aimed to examine factors based on content of mobile marketing (entertainment, information, irritation, utility and personalization and frequency factor that are affecting the formation of attitude toward mobile marketing targeting BH consumers, and also will try bring to light the response behavior of consumers attitude toward mobile marketing practices and how consumers perceive mobile marketing in BH. The research approach for this study is descriptive and the data was collected by 200 online surveys from young population of BH. The data was analyzed using the software program SPSS. Based on analysis and findings, variables of content have different effect on consumer attitude. Research has shown that a lot of respondents believe mobile marketing is a good idea and that they certainly eases the need for products and services. This paper could be used as a good basis for future research on bigger sample.

Irma Jasarspahic

2014-08-01

255

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.

256

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

257

Mobile betatron laboratory  

Energy Technology Data Exchange (ETDEWEB)

Three versions of mobile betatron laboratories were developed, which permit product control under nonstationary conditions. The laboratory equipment was installed in the covered body of a motor vehicle, and includes a betatron electromagnet, power supply, a control desk, as well as photolaboratory equipment. Laboratory versions PBL-1, PBL-2 and PBL-2A differ from each other in the type of betatron used, the equipment assembly for film processing and, accordingly, in the resources for controlling film thickness, exposure and the speed of film processing. A three-year testing period has been completed for mobile defectoscopic betatron laboratories.

Vorob' ev, V.A.; Gavlakov, Yu.D.; Kunitsyn, G.A.; Shumikhin, V.F.; Yaroslavtsev, V.D.

1975-01-01

258

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

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  

OpenAIRE

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

261

Mobile Tracking Application  

Directory of Open Access Journals (Sweden)

Full Text Available Personal Tracking Systems are the tracking devices specially built up for personal information. The person takes it with him and the information of where he is presently is provided. The same system has been implemented in this mobile tracking application i.eTrackMeApp but various extended features that the existing system does not have. This system is GPS enabled android mobile phone whose location is tracked. Our application provides the functionality of defining the geo-fence areas as safe, risky and highly risky.

RADHIKA KINAGE

2013-03-01

262

Mobile light in roses  

OpenAIRE

In order to quantify the claimed differences between mobile and static lighting, and to clarify the mechanisms causing these differences, an experiment with rose `First Red¿ was carried out. In a greenhouse compartment half of the area was equipped with mobile lamps, and the other half with static lamps. By mounting the lamps in the centre of the greenhouse, a light gradient was achieved in both treatments. Experimental plots were chosen with daily light integrals of 1 to 3 and 3 to 5 mol m-...

Marissen, A.; Snel, J. F. H.; Elings, A.; Warmenhoven, M. G.

2006-01-01

263

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

264

Mobile Application Recommender System  

OpenAIRE

With the amount of mobile applications available increasing rapidly, users have to put a lot of effort into finding applications of interest. The purpose of this thesis is to investigate how to aid users in the process of discovering new mobile applications by providing them with recommendations. A prototype system is then built as a proof-of-concept. The work of the thesis is divided into three phases where the aim of the first phase is to study related work and related systems to identify p...

Davidsson, Christoffer

2010-01-01

265

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

266

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

267

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

268

Resource Identification Using Mobile Queries  

OpenAIRE

Location based mobile services (LBS) are budding significantly along with development of GPS-enabled mobile phones, smart phones and PDAs. Mobile users may submit the query to the server for knowing about nearest resources such as fuel stations, hospitals, ATM centers etc to get the services. In this scenario, identifying locations of resources is highly significant. This paper focuses on query management in mobile environments to locate the most appropriate location of the required services.

Balasundaram, S. R.; Saravanan, A.

2010-01-01

269

Characteristics of Mobile Payment Procedures  

OpenAIRE

Companies are not going to invest into the development of innovative applications or services unless these can be charged for appropriately. Thus, the existence of standardized and widely accepted mobile payment procedures is crucial for successful business-to-customer mobile commerce. The acceptance of mobile payment procedures depends on costs, security and convenience issues. For the latter, it is important that a procedure can be used over the different payment scenarios mobile commerce, ...

Kreyer, Nina; Pousttchi, Key; Turowski, Klaus

2002-01-01

270

Vehicular Mobility Simulation For VANET  

OpenAIRE

The study of vehicular ad-hoc networks (VANETs) requires efficient and accurate simulation tools. As the mobility of vehicles and driverbehaviour can be affected by network messages, these tools must include a vehicle mobility model integrated with a quality network simulator. We present the first implementation of a well known vehicle mobility model to NS-3.Vehicular ad-hoc networks are self organised networks built up from moving vehicles, and are part of the broader class of Mobile ad-hoc ...

Khope, Miss Shruti S.; Gayakwad, Miss Swati V.; Dhagdi, Prof Sandip T.

2013-01-01

271

Security Threats in Prepaid Mobile  

OpenAIRE

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

272

Consumer attitudes toward mobile advertising  

OpenAIRE

PURPOSE OF THE STUDY Academic research in the field of mobile advertising has to date been fragmented and the results have been controversial. The purpose of this research is to study the consumer view of mobile advertising in order to discover how consumers in Finland perceive mobile advertisements. A thorough literature review of previous studies in the fields of social psychology, advertising psychology and mobile advertising was conducted to establish the theoretical foundations of th...

Friman, Julia

2010-01-01

273

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

274

Mobility of photosynthetic proteins.  

Czech Academy of Sciences Publication Activity Database

Ro?. 116, 2-3 (2013), s. 465-479. ISSN 0166-8595 R&D Projects: GA ?R GAP501/12/0304; GA MŠk(CZ) ED2.1.00/03.0110 Institutional support: RVO:61388971 Keywords : Photosynthesis * Protein mobility * FRAP Subject RIV: EE - Microbiology, Virology Impact factor: 3.185, year: 2013

Ka?a, Radek

2013-01-01

275

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

276

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

277

Gridless overtone mobility spectrometry.  

Science.gov (United States)

A novel overtone mobility spectrometry (OMS) instrument utilizing a gridless elimination mechanism and cooperative radio frequency confinement is described. The gridless elimination region uses a set of mobility-discriminating radial electric fields that are designed so that the frequency of field application results in selective transmission and elimination of ions. To neutralize ions with mobilities that do not match the field application frequency, active elimination regions radially defocus ions toward the lens walls. Concomitantly, a lens-dependent radio frequency waveform is applied to the transmission regions of the drift tube resulting in radial confinement for mobility-matched ions. Compared with prior techniques, which use many grids for ion elimination, the new gridless configuration substantially reduces indiscriminate ion losses. A description of the apparatus and elimination process, including detailed simulations showing how ions are transmitted and eliminated is presented. A prototype 28 cm long OMS instrument is shown to have a resolving power of 20 and is capable of attomole detection limits of a model peptide (angiotensin I) spiked into a complex mixture (in this case peptides generated from digestion of ?-casein with trypsin). PMID:24125033

Zucker, Steven M; Ewing, Michael A; Clemmer, David E

2013-11-01

278

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.)

279

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

280

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

281

Mobile automatic metabolic analyzer  

Science.gov (United States)

Two flexible pipes, attached to face mask, are connected to spirometers in mobile cart. Inhaled air volume is measured as it is drawn from one spirometer, and exhaled air volume is measured as it is breathed into second spirometer. Sensor is used to monitor heartbeat rate.

Bynum, B. G.; Currie, J. R.

1975-01-01

282

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

283

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

284

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

285

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

286

Investigations of the inductively coupled plasma source for analyzing NURE water samples at the Los Alamos Scientific Laboratory  

International Nuclear Information System (INIS)

A 3.4-meter direct-reading spectrograph is being used with an inductively coupled plasma source for the simultaneous determination of Ag, Bi, Cd, Cu, Nb, Ni, Pb, Sn, and W in water samples. We have attached a small digital computer to the system in order to obtain intensity data on each element once a second. After the intensities during a run on a sample have stabilized, the computer records the intensity data and outputs the average concentration for each element. To approach the published detection limits, a peristaltic pump must be used to force the water sample into the usual cross-flow nebulizer. We have studied several different nebulizer designs with the goal of improving efficiency and hence sensitivity. One design, the fritted-disk nebulizer, has an efficiency over 60 percent, as compared with the 5 percent efficiency of the original nebulizer

287

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

288

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

289

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

OpenAIRE

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 integrati...

Ouiame Filali Marzouki; Asmaâ Retbi; Mohammed Khalidi Idrissi; Samir Bennani

2014-01-01

290

Mobility-Based Mobile Relay Selection in MANETs  

Science.gov (United States)

The future wireless mobile communication networks are expected to provide seamless wireless access and data exchange to mobile users. In particular, it is expected that the demand for ubiquitous data exchange between mobile users will increase with the widespread use of various wireless applications of the intelligent transportation system (ITS) and intelligent vehicles. Mobile ad hoc networks (MANETs) are one of the representative research areas pursuing the technology needed to satisfy the increasing mobile communication requirements. However, most of the works on MANET systems do not take into account the continuous and dynamic changes of nodal mobility to accommodate system design and performance evaluation. The mobility of nodes limits the reliability of communication between the source and the destination node since a link between two continuously moving nodes is established only when one node enters the transmission range of the other. To alleviate this problem, mobile relay has been studied. In particular, it is shown that relay selection is an efficient way to support nodal mobility in MANET systems. In this paper, we propose a mobility-based relay selection algorithm for the MANET environment. Firstly, we define the lifetime as the maximum link duration for which the link between two nodes remains active. Therefore, the lifetime indicates the reliability of the relay link which measures its capability to successfully support relayed communication when requested by the source node. Furthermore, we consider a series of realistic scenarios according to the randomness of nodal mobility. Thus, the proposed algorithm can be easily applied in practical MANET systems by choosing the appropriate node mobility behavior. The numerical results show that the improved reliability of the proposed algorithm's relayed communication is achieved with a proper number of mobile relay nodes rather than with the conventional selection algorithm. Lastly, we show that random mobility of the individual nodes enhances reliability of the network in a sparse network environment.

Kim, Gilnam; Lee, Hyoungjoo; Lee, Kwang Bok

291

Mobile devices tools and technologies  

CERN Document Server

Mobile Devices: Tools and Technologies provides readers with an understanding of the mobile landscape available to app developers, system and network engineers, and the avid techie. As the trend of mobile technology has enabled the continuous development of ubiquitous applications, this book offers insights into tools and technologies critical to evaluating and implementing mobile strategies.The book is organized into four parts of 18 contributed chapters written by engineers in the areas of application and database development, mobile enterprise strategy, and networking and security. Througho

Collins, Lauren

2015-01-01

292

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

293

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

294

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

295

Mobile Autonomous Humanoid Assistant  

Science.gov (United States)

A mobile autonomous humanoid robot is assisting human co-workers at the Johnson Space Center with tool handling tasks. This robot combines the upper body of the National Aeronautics and Space Administration (NASA)/Defense Advanced Research Projects Agency (DARPA) Robonaut system with a Segway(TradeMark) Robotic Mobility Platform yielding a dexterous, maneuverable humanoid perfect for aiding human co-workers in a range of environments. This system uses stereo vision to locate human team mates and tools and a navigation system that uses laser range and vision data to follow humans while avoiding obstacles. Tactile sensors provide information to grasping algorithms for efficient tool exchanges. The autonomous architecture utilizes these pre-programmed skills to form human assistant behaviors. The initial behavior demonstrates a robust capability to assist a human by acquiring a tool from a remotely located individual and then following the human in a cluttered environment with the tool for future use.

Diftler, M. A.; Ambrose, R. O.; Tyree, K. S.; Goza, S. M.; Huber, E. L.

2004-01-01

296

Equivalence Testing Mobile Apps  

Directory of Open Access Journals (Sweden)

Full Text Available Mobile apps are often developed and then evolved on more than one mobile operating system. For the publisher of such apps, the problem is how to ensure equivalence of the product on the various platforms, in the sense of acting equivalently with respect to a test set. In this paper we present an approach that tackles this problem from two directions: architecture and testing. First we will explain the role and pitfalls of reference architectures. Then we will present our equivalence testing framework. It is based on mocking components of the target implementation. Instead of implementing mock components for all platforms, our approach is to implement these mocks only once and run them on a central server. On the tested target device, stub components are injected that forward to their server-based counterparts. Thus the exactly same test code is applied to all platform specific implementations.

Denzler Christoph

2012-01-01

297

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

298

Mobile nuclear power systems  

International Nuclear Information System (INIS)

This report is meant to present a general survey of the mobile nuclear power systems and not a detailed review of their technical accomplishments. It is based in published material mainly up to 1987. Mobile nuclear power systems are of two fundamentally different kinds: nuclear reactors and isotopic generators. In the reactors the energy comes from nuclear fission and in the isotopic generators from the radioactive decay of suitable isotopes. The reactors are primarily used as power sourves on board nuclear submarines and other warships but have also been used in the space and in remote places. Their thermal power has ranged from 30 kWth (in a satellite) to 175 MWth (on board an aircraft carrier). Isotopic generators are suitable only for small power demands and have been used on board satellites and spaceprobes, automatic weatherstations, lighthouses and marine installations for navigation and observation. (author)

299

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

300

Call-related factors influencing output power from mobile phones.  

Science.gov (United States)

Mobile phone use is increasing but there is also concern for adverse health effects. Well-designed prospective studies to assess several health outcomes are required. In designing a study of mobile phone use, it is important to assess which factors need to be considered in classifying the exposure to radiofrequency fields (RF). A pilot study was performed in Sweden and in the UK 2002 to 2003 to test the feasibility of recruiting a cohort of mobile phone users from a random population sample and from mobile phone subscription lists for a prospective study. As one part of this pilot study, different factors were evaluated regarding possible influence on the output power of the phones. By local switch logging, information on calls made from predefined subscriptions or dedicated handsets were obtained and the output power of phones during calls made indoors and outdoors, in moving and stationary mode, and in rural as well in urban areas were compared. In this experiment, calls were either 1, 1.5 or 5 min long. The results showed that high mobile phone output power is more frequent in rural areas whereas the other factors (length of call, moving/stationary, indoor/outdoor) were of less importance. Urban and rural area should be considered in an exposure index for classification of the exposure to RF from mobile phones and may be assessed by first base station during mobile phone calls or, if this information is not available, possibly by using home address as a proxy. PMID:16670713

Hillert, Lena; Ahlbom, Anders; Neasham, David; Feychting, Maria; Järup, Lars; Navin, Roshan; Elliott, Paul

2006-11-01

301

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

OpenAIRE

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 bacterial contamination with different types...

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

2009-01-01

302

Lessons by mobile learning  

OpenAIRE

A consortium of two Dutch universities, Wageningen University, Wageningen and Free University, Amsterdam, started in 2003 with the MANOLO-project founded by the Dutch National Organization SURF. The SURF foundation supports innovation and dissemination of information and communication technology (ICT) in higher and academic education. By the MANOLO project guidelines for wireless and mobile learning technology (W- and M-learning) have to be developed

Lammeren, R. J. A.

2005-01-01

303

Mobile Remote Control Architecture  

OpenAIRE

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...

George Stefan Bogdan

2012-01-01

304

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

305

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

306

Mobile analysis systems  

International Nuclear Information System (INIS)

In a project funded by the Federal Minister for Research and Technology (BMFT), a mobile monitoring system (all-terrain vehicle with GC/MS spectrometer, on-board computer imcluding user software, and power supply system) was employed for chemical-analytical monitoring and evaluation of organic contaminations in suspected pollution sites in the urban agglomeration of Leipzig with the aim to establish an emission cadastre. (orig./BBR)

307

Mobile Software Licensing  

OpenAIRE

Licensing models and license management systems are going through major changes because the traditional shrink-wrapped software way of licensing does not meet the needs of the modern software market. In particular the emergence of new platforms, such as mobile computing and the assumption by software vendors of clients possessing network connected software, will revolutionize how software is licensed and managed. Software license systems are moving towards more exibility and s...

Dusparic, Ivana

2003-01-01

308

The sustainable mobility paradigm  

OpenAIRE

This paper has two main parts. The first questions two of the underlying principles of conventional transport planning on travel as a derived demand and on travel cost minimisation. It suggests that the existing paradigm ought to be more flexible, particularly if the sustainable mobility agenda is to become a reality. The second part argues that policy measures are available to improve urban sustainability in transport terms but that the main challenges relate to the necessary conditions for ...

Prof David Banister

2008-01-01

309

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

310

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

311

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

312

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

313

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

314

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

315

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

316

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 processes when the honest processes can only perform a bounded number of steps and without path constraints in communication. We show that this problem is NP-complete.

Mödersheim, Sebastian Alexander; Nielson, Flemming

2013-01-01

317

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

318

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

319

Authorisation Issues for Mobile Code in Mobile Systems  

OpenAIRE

This thesis is concerned with authorisation issues for mobile code in mobile systems. It is divided into three main parts. Part I covers the development of a policy-based framework for the authorisation of mobile code and agents by host systems. Part II addresses the secure download, storage and execution of a conditional access application, used in the secure distribution of digital video broadcast content. Part III explores the way in which trusted computing technology may...

Gallery, Eimear

2008-01-01

320

Mobile Advertising : A Case study of Mobile advertising Solutions  

OpenAIRE

This report has been produced as a result of a Thesis assignment conducted at Ericsson. Itspurpose is to give an overview of the Mobile Advertising industry. In this report an overviewof mobile advertising is presented and thru which channels advertising could be used. Thenthree mobile advertising campaigns are shown and described with background, strategy andresults. The different global markets, the different actors in the value chain and how the onlinebehavior has changed are analyzed. The...

Salim, Ali; Alikhani, Nima

2009-01-01

321

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

322

System Architecture and Mobility Management for Mobile Immersive Communications  

Directory of Open Access Journals (Sweden)

Full Text Available We propose a system design for delivery of immersive communications to mobile wireless devices based on a distributed proxy model. It is demonstrated that this architecture addresses key technical challenges for the delivery of these services, that is, constraints on link capacity and power consumption in mobile devices. However, additional complexity is introduced with respect to application layer mobility management. The paper proposes three possible methods for updating proxy assignments in response to mobility management and compares the performance of these methods.

Farzad Safaei

2007-02-01

323

User-oriented Mobile Filesystem Middleware for Mobile Cloud Systems  

Directory of Open Access Journals (Sweden)

Full Text Available More and more mobile equipment use independent filesystem to expand their capacity, however the mobile storage systems often perform undesirable when plenty of users participate in these systems. In this paper, we present a novel mobile storage framework, which is aiming to provide convenient mechanism for mobile equipments. In the proposed storage framework, several optimization mechanisms are incorporated for improving the performance of massive data synchronization and backup. The results show that it is more flexible and reliable than other existing systems. In addition, its exhibits highly robustness when the system is in presence of a large number of concurrent users.

Dongbo Liu

2013-09-01

324

Mobile Design Pattern Gallery UI Patterns for Mobile Applications  

CERN Document Server

When you're under pressure to produce a well designed, easy-to-navigate mobile app, there's no time to reinvent the wheel. This concise book provides a handy reference to 70 mobile app design patterns, illustrated by more than 400 screenshots from current iOS, Android, BlackBerry, WebOS, Windows Mobile, and Symbian apps. User experience professional Theresa Neil (Designing Web Interfaces) walks you through design patterns in 10 separate categories, including anti-patterns. Whether you're designing a simple iPhone application or one that's meant to work for every popular mobile OS on the mark

Neil, Theresa

2012-01-01

325

Selective blubber fatty acid mobilization in lactating gray seals (Halichoerus grypus).  

Science.gov (United States)

During negative energy balance periods, fatty acids (FAs) are mobilized to cover the metabolic demands of the body. FAs from adipose tissue are selectively mobilized according to their carbon length (CL) and number of double bonds (DBs); however, studies in vivo have focused only on fasting and nonlactating animals. During lactation, UK gray seals fast for 18 d, mobilizing a large amount of lipid from blubber to sustain their own metabolic demands and the nutritional requirements of pups. We investigated FA mobilization in individual gray seal mothers from two UK colonies sampled in 2005 and 2006. Linear mixed-effects models were used to examine to what extent the mobilization observed from FAs in blubber can be explained as a function of FAs' CL and number of DBs. FAs were mobilized according to their structure, such that for a given CL, mobilization increased with the number of DBs, and for a given number of DBs, mobilization decreased as CL increased. This pattern of selective mobilization was very similar between colonies, although the relative amounts of component FAs in blubber at early lactation were different between them. FAs, which are considered crucial to pup development, were mobilized more than predicted by the model. This suggests that selective mobilization of FAs is not related solely to the physicochemical characteristics of the FAs but also to the needs of a growing pup. PMID:23799838

Arriola, Aline; Biuw, Martin; Walton, Mike; Moss, Simon; Pomeroy, Patrick

2013-01-01

326

Environmental monitoring systems: a new type of mobile laboratory  

International Nuclear Information System (INIS)

Nuclear facilities are obligated to monitor the environmental radiation in their vicinity, which is often fulfilled by monitoring cars, combined with fixed monitoring stations. The MOLAR Mobile Laboratory for Environmental Radiation Monitoring as described here is being used under normal and accident conditions as a spot check monitoring system or to perform continuous measurements along a driving track. The mobile laboratories are continuously connected with the control centre's CRCS Central Radiological Computer System, where the RIS Radiological Information System provides corresponding evaluation functions. The mobile labs contain measuring and controlling units like ?-dose rate monitors, ?-spectrometer with a HpGe High Purity Germanium detector, a lead shielded measuring cell and MCA Multi-Channel Analyser, portable ?-contamination monitor, ?/?/? multipurpose quick measuring unit, aerosol and iodine sampling units. The collected samples are safely stored for the transport to the environmental laboratory for being analysed later. The geographical location of the moving car is continuously determined by the satellite based GPS Global Positioning System and transferred in the on-board rack mounted computer system for being stored and locally displayed. Real-time data transmission via radio and mobile phone is continuously performed to supply the RIS Radiological Information System in the control centre via radio and mobile phone. The latter also serves for voihone. 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.)

327

IMPACT OF ADVERTISEMENT ON CONSUMERS OF NAGPUR CITY FOR BUYING MOBILE PHONES  

OpenAIRE

The purpose of present study has been conducted to investigate the impact of advertisement on consumer behavior of Mobile phones in Nagpur City (N = 200). This paper aims to explore the role of advertisement on attitudes towards buying behavior. A questionnaire has prepared to evaluate the impact of advertisement. The sample data has mobile users belonging to different age and income groups.

Paunikar, A. N.

2014-01-01

328

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

329

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

330

Passive sampling of ambient ozone by solid phase microextraction with on-fiber derivatization  

Energy Technology Data Exchange (ETDEWEB)

The solid phase microextraction (SPME) device with the polydimethylsiloxane/divinylbenzene (PDMS/DVB) fiber was used as a passive sampler for ambient ozone. Both O-2,3,4,5,6-(pentafluorobenzyl)hydroxylamine hydrochloride (PFBHA) and 1,2-di-(4-pyridyl)ethylene (DPE) were loaded onto the fiber before sampling. The SPME fiber assembly was then inserted into a PTFE tubing as a passive sampler. Known concentrations of ozone around the ambient ground level were generated by a calibrated ozone generator. Laboratory validations of the SPME passive sampler with the direct-reading ozone monitor were performed side-by-side in an exposure chamber at 25 deg. C. After exposures, pyriden-4-aldehyde was formed due to the reaction between DPE and ozone. Further on-fiber derivatizations between pyriden-4-aldehyde and PFBHA were followed and the derivatives, oximes, were then determined by portable gas chromatography with electron capture detector. The experimental sampling rate of the SPME ozone passive sampler was found to be 1.10 x 10{sup -4} cm{sup 3} s{sup -1} with detection limit of 58.8 {mu}g m{sup -3} h{sup -1}. Field validations with both SPME device and the direct-reading ozone monitor were also performed. The correlations between the results from both methods were found to be consistent with r = 0.9837. Compared with other methods, the current designed sampler provides a convenient and sensitive tool for the exposure assessments of ozone.

Lee, I-S. [Institute of Environmental Health, College of Public Health, National Taiwan University, No. 17, Xuzhou Road, Taipei 100, Taiwan (China); Tsai, S.-W. [Institute of Environmental Health, College of Public Health, National Taiwan University, No. 17, Xuzhou Road, Taipei 100, Taiwan (China)], E-mail: shihweitsai@ntu.edu.tw

2008-03-10

331

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

332

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.K.

333

Diffusion of mobile Internet services  

OpenAIRE

Mobile Internet is an outcome of the merging of two significant domains of technological innovation over recent years: mobile/wireless and the Internet. This merging will lead to new forms of end-user behaviour and also provide business opportunities for companies from the converging telecommunications, IT/Internet, and media industries. The diffusion of technological innovations is widely discussed in the literature. However, applications of the diffusion theory to mobile services have mostl...

Kivi, Antero

2011-01-01

334

Information Technologies supporting students’ mobility  

OpenAIRE

Purpose: ESMOS is a project financially supported by the SOCRATES/Minerva European Commission initiative, which aims to enhance student mobility through online support. The ESMOS partnership has explored existing practice in student mobility support, particularly investigating how technology is being utilised to support students. It has also examined the factors that affect exchange students and has identified problems with meeting student mobility numbers.Design/methodology/approach: The r...

Morawska-walasek, D.; Pia?tkowski, J.; Walasek, T.

2007-01-01

335

Mobile Application Threats and Security  

OpenAIRE

the movement to mobile computing solutions provides flexibility to different users whether it is a business user, a student, or even providing entertainment to children and adults of all ages. Due to these emerging technologies mobile users are unable to safeguard private information in a very effective way and cybercrimes are increasing day by day. This manuscript will focus on security vulnerabilities in the mobile computing industry, especially focusing on tablets and smart phones. This ...

Timur Mirzoev; Michael Brannon; Shamimara Lasker; Mark Miller

2014-01-01

336

Innovative Secure Mobile Banking Services  

OpenAIRE

Due to the widespread use of computer technologies in almost all aspects of life, organisations that are connected to the Internet started extending their services to their customers to include new applications and services that satisfy their customers’ desires to make better businesses. One of these emerging applications is mobile banking. The term mobile banking (or m-banking) describes the banking services that the user can perform via a mobile device ubiquitously at anytime and from any...

Al-akhras, Mousa T.; Rizik Al-Sayyed; Marwah Alian; Doaa Qwasmi

2011-01-01

337

Mobile Services and Network Proximity  

OpenAIRE

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

338

Quality Analysis of Mobile Applications  

OpenAIRE

Mobile applications are defined and different types of mobile applications are identified. Characteristics of quality are defined and their indicators are constructed to measure levels. Take into account 11 parameters analysis for mobile applications, which are arranged using weights and do a detailed analysis of the system of weights. For SMSEncrypt application performance measurement is done using an aggregate indicator based on the obtained weights system.

Ivan, Ion; Zamfiroiu, Alin

2011-01-01

339

Reweaving UMA: Urbanism Mobility Architecture:  

OpenAIRE

The immediate context of this book is the changing theoretical debate within and around mobility. After decades of stagnation into quantitative problem-solving approaches and models of functional organisation the discourse on mobility is now taking its moves - once again - from within the fields of urban design and architecture. However, although there is a growing awareness that mobility is part of the changing perspective towards the built environment, there is still a great deal to do. As ...

Calabrese, L. M.

2004-01-01

340

Mobile Intelligent Autonomous Systems  

Directory of Open Access Journals (Sweden)

Full Text Available Mobile intelligent autonomous systems (MIAS is a fast emerging research area. Although it can be regarded as a general R&D area, it is mainly directed towards robotics. Several important subtopics within MIAS research are:(i perception and reasoning, (ii mobility and navigation,(iii haptics and teleoperation, (iv image fusion/computervision, (v modelling of manipulators, (vi hardware/software architectures for planning and behaviour learning leadingto robotic architecture, (vii vehicle-robot path and motionplanning/control, (viii human-machine interfaces for interaction between humans and robots, and (ix application of artificial neural networks (ANNs, fuzzy logic/systems (FLS,probabilistic/approximate reasoning (PAR, Bayesian networks(BN and genetic algorithms (GA to the above-mentioned problems. Also, multi-sensor data fusion (MSDF playsvery crucial role at many levels of the data fusion process:(i kinematic fusion (position/bearing tracking, (ii imagefusion (for scene recognition, (iii information fusion (forbuilding world models, and (iv decision fusion (for tracking,control actions. The MIAS as a technology is useful for automation of complex tasks, surveillance in a hazardousand hostile environment, human-assistance in very difficultmanual works, medical robotics, hospital systems, autodiagnosticsystems, and many other related civil and military systems. Also, other important research areas for MIAScomprise sensor/actuator modelling, failure management/reconfiguration, scene understanding, knowledge representation, learning and decision-making. Examples ofdynamic systems considered within the MIAS would be:autonomous systems (unmanned ground vehicles, unmannedaerial vehicles, micro/mini air vehicles, and autonomousunder water vehicles, mobile/fixed robotic systems, dexterousmanipulator robots, mining robots, surveillance systems,and networked/multi-robot systems, to name a few.Defence Science Journal, 2010, 60(1, pp.3-4, DOI:http://dx.doi.org/10.14429/dsj.60.92

Jitendra R. Raol

2010-01-01

341

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

342

The mobile application hacker's handbook  

CERN Document Server

See your app through a hacker's eyes to find the real sources of vulnerability The Mobile Application Hacker's Handbook is a comprehensive guide to securing all mobile applications by approaching the issue from a hacker's point of view. Heavily practical, this book provides expert guidance toward discovering and exploiting flaws in mobile applications on the iOS, Android, Blackberry, and Windows Phone platforms. You will learn a proven methodology for approaching mobile application assessments, and the techniques used to prevent, disrupt, and remediate the various types of attacks. Coverage i

Chell, Dominic; Colley, Shaun; Whitehouse, Ollie

2015-01-01

343

Mobility Integration of ERP systems  

Directory of Open Access Journals (Sweden)

Full Text Available Nowadays a lot of enterprises work with ERP systems. It usefulness is generally used in office environments and different enterprises which offer this software are developing mobile applications. These mobile applications work with their own system and they don’t usually work in other platforms. Currently any mobile application can communicate with more than one ERP system because each one has its own communications methods. This article presents a system that expect unify the communication between different ERP systems and allows mobile applications to communicate with them in a homogeneous way.

Álvaro LOZANO

2015-03-01

344

Mobile device security for dummies  

CERN Document Server

The information you need to avoid security threats on corporate mobile devices Mobile devices have essentially replaced computers for corporate users who are on the go and there are millions of networks that have little to no security. This essential guide walks you through the steps for securing a network and building a bulletproof framework that will protect and support mobile devices in the enterprise. Featuring real-world case scenarios, this straightforward guide shares invaluable advice for protecting mobile devices from the loss of sensitive and confidential corporate informati

Campagna, Rich; Krishnan, Ashwin

2011-01-01

345

Mobile Communication Systems and Security  

CERN Document Server

Mobile Communication Systems and Security arms readers with a thorough understanding of all major cellular air-interface technologies and their security layer techniques. Rhee covers the technological development of wireless mobile communications in compliance with each iterative generation up to 3G systems and beyond, with an emphasis on wireless security aspects. By progressing in a systematic manner, presenting the theory and practice of wireless mobile technologies along with various security problems, readers will gain an intimate sense of how mobile systems operate and how to address com

Rhee, Man Young

2009-01-01

346

Speech Recognition on Mobile Devices  

DEFF Research Database (Denmark)

The enthusiasm of deploying automatic speech recognition (ASR) on mobile devices is driven both by remarkable advances in ASR technology and by the demand for efficient user interfaces on such devices as mobile phones and personal digital assistants (PDAs). This chapter presents an overview of ASR in the mobile context covering motivations, challenges, fundamental techniques and applications. Three ASR architectures are introduced: embedded speech recognition, distributed speech recognition and network speech recognition. Their pros and cons and implementation issues are discussed. Applications within command and control, text entry and search are presented with an emphasis on mobile text entry.

Tan, Zheng-Hua; Lindberg, BØrge

2010-01-01

347

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

348

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

349

Trigonometry via Mobile Device  

Science.gov (United States)

Students investigate the relationships between angles and side lengths in right triangles with the help of materials found in the classroom and a mobile device. Using all or part of a meter stick or dowel and text books or other supplies, students build right triangles and measure the angles using a clinometer application on an Android® (phone or tablet) or iOS® device (iPhone® or iPad®). Then they are challenged to create a triangle with a given side length and one angle. The electronic device is used to measure the accuracy of their constructions.

IMPART RET Program,

350

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

351

Mobile multiwave lidar complexes  

International Nuclear Information System (INIS)

Multiwave mobile lidar complexes (MLCs) are designed and developed. A number of vehicle-based MLCs are built. The set of complex lidar probing data obtained with the help of MLCs is synchronised in space and time, covers a large area (the operation range of an MLC is 15 km), and is based on a unified methodological approach. The results of probing contain information on the concentration and physical nature of atmospheric aerosol, chemical composition of the gaseous phase of the atmosphere, wind and turbulence. The obtained data form the basis for a complex analysis of the ecological situation and prognosis of its development. (laser applications and other topics in quantum electronics)

352

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

353

Principles of mobile communication  

CERN Document Server

Preface. 1. Introduction: Wireless Systems and Standards; Frequency Reuse and the Cellular Concept; Mobile Radio Propagation Environment; Co-channel Interference and Noise; Receiver Sensitivity and Link Budget; Coverage; Spectral Efficiency and Capacity. 2. Propagation Modeling: Frequency-Non-Selective (Flat) Multipath-Fading; Frequency-Selective Multipath-Fading; Laboratory Simulation of Multipath-Fading Channels; Shadowing; Path Loss Models. 3. Co-Channel Interference: Multiple Log-normal Interferers; Probability of Outage; Multiple Ricean-Rayleigh Interferers; Multiple Log-normal N

Stüber, Gordon L

2007-01-01

354

76 FR 41522 - In the Matter of Certain Electronic Devices, Including Mobile Phones, Mobile Tablets, Portable...  

Science.gov (United States)

...Matter of Certain Electronic Devices, Including Mobile Phones, Mobile Tablets, Portable Music Players, and Computers...within the United States after importation of certain mobile phones, mobile tablets, portable music players, and...

2011-07-14

355

76 FR 24051 - In the Matter of Certain Electronic Devices, Including Mobile Phones, Mobile Tablets, Portable...  

Science.gov (United States)

...Matter of Certain Electronic Devices, Including Mobile Phones, Mobile Tablets, Portable Music Players, and Computers...importation of certain electronic devices, including mobile phones, mobile tablets, portable music players, and...

2011-04-29

356

Slovenian Mobile Radiological Laboratory - Preparedness Programme  

International Nuclear Information System (INIS)

Full text: The overall monitoring programme of radioactivity in Slovenia consists of three major parts: a general monitoring programme of radioactivity in the country, three specific monitoring programmes, and emergency monitoring programmes. Specific monitoring programmes are performed in the surroundings of nuclear facilities. The most comprehensive one is the monitoring programme around the Krsko NPP. It consists of three sub-programmes named A, B and C, programme C being the emergency preparedness programme of the Ecological Laboratory with a Mobile Unit. While Programme A represents the regular monitoring programme of the environment, Programme B defines sampling locations, representative samples and frequencies of sampling for control measurements of liquid and gaseous effluents. The objectives of Programme C are intercomparison measurements between Mobile Radiological Laboratory (MRL) and Krsko NPP, overall tests of emergency capabilities of MRL, identification of any actual or potential weaknesses in equipment, procedures, or team skills, team acquaintance with the surroundings of the NPP, routes, measuring locations and normal radiological parameters in the environment, and finally improvements of the response plans, procedures and co-ordination. Programme C provides for an adequate and efficient response in radiological emergencies and is of exceptional importance. The paper presents training and drills, which are organised three times per year in the surrouganised three times per year in the surrounding of NPP Krsko, and lessons learned are discussed. (author)

357

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

358

Mobility of solid 4He  

Science.gov (United States)

Recent torsional oscillator measurements [1,2] on solid ^4He in the pores of Vycor and in bulk demonstrated non-classical rotational inertia and showed a decrease in period below about 200 mK, suggestive of a transition to a supersolid phase. It becomes interesting to see whether solid ^4He exhibits any of the other unusual flow properties of a superfluid. We have performed capacitive measurements on the mobility of solid ^4He in Vycor. By suddenly increasing the pressure in a cell containing a Vycor sample, we were able to monitor the pressure induced flow of solid ^4He in the pores. Near its melting temperature the solid ^4He does flow in/out of the pores, but the flow rate decreases rapidly with temperature, until no flow is observable below 700 mK. We do not see any flow at temperatures down to 25 mK, implying that either supersolid ^4He in Vycor does not flow in response to a large pressure difference or that superflow occurs at a rate far slower than the critical velocities observed by Kim and Chan. We have also begun work on pressure induced flow of bulk solid ^4He. This work was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC). 1. E. Kim and M.H.W. Chan, Nature 427, 225 (2004). 2. E. Kim and M.H.W. Chan, Science 305, 1941 (2004).

Day, James

2005-03-01

359

Helium mobility in advanced nuclear ceramics  

Energy Technology Data Exchange (ETDEWEB)

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., E-mail: shradha.agarwal@cea.fr [CEA/DEN/Service de Recherches de Métallurgie Physique, Laboratoire JANNUS (France); Trocellier, P.; Serruys, Y. [CEA/DEN/Service de Recherches de Métallurgie Physique, Laboratoire JANNUS (France); Vaubaillon, S. [CEA/DEN/Service de Recherches de Métallurgie Physique, Laboratoire JANNUS (France); CEA-INSTN/UEPTN, Centre d’Etudes de Saclay, F-91191 Gif sur Yvette (France); Miro, S. [CEA/DEN/Service de Recherches de Métallurgie Physique, Laboratoire JANNUS (France)

2014-05-01

360

Helium mobility in advanced nuclear ceramics  

International Nuclear Information System (INIS)

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

361

Mobilized by Mobile Media. How Chinese People use mobile phones to change politics and democracy  

OpenAIRE

This dissertation examines the use of the mobile phone in contentious politics in contemporary China. It undertakes a qualitative analysis of multiple cases to investigate how Chinese people adopt and appropriate mobile media to meet their communication needs, struggle against the authorities, and facilitate an inexpensive counter-public sphere. Drawing on Negt and Kluge's conceptual framework of the counter-public sphere, specifically, this study addresses the role of the mobile phone in gua...

Jun, Liu

2013-01-01

362

Characterization and recovery of polymers from mobile phone scrap.  

Science.gov (United States)

Electronic scrap is part of a universally wide range of obsolete, defective, or used materials that need to be disposed of or recycled in an ecologically friendly manner. The present study focused on the polymers present in mobile phone scrap. In mobile phones, polymers are found in frames and in printed circuit boards (PCBs). The frames are mainly made of polymers whereas PCBs use a variety of material (polymers, ceramics, and metals) which makes recycling more difficult. As a first step, mobile phones were collected, separated by manufacturer/model, and weighed, and the principal polymer types identified. The frames and PCBs were processed separately. The metals in PCBs were separated out by an electrostatic separation process. The resulting polymeric material was identified and mixed with the polymers of frames to fabricate the samples. Two types of samples were made: one with polymeric frames, and the other with a mixture of frames and polymeric fraction from the PCBs. Both kinds of sample were fabricated by injection moulding. The samples were evaluated by mechanical tests (tensile, impact, and hardness) to verify the feasibility of recycling the polymers present in mobile phone scrap. The results demonstrated the technical viability of recovering polymers using mechanical processing followed by an injection process. PMID:21382879

Kasper, Angela C; Bernardes, Andréa M; Veit, Hugo M

2011-07-01

363

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

364

Environmental control plan for the 3728 Building and mobile laboratories  

International Nuclear Information System (INIS)

This environmental control plan is for the Hanford Site's 3728 Building located in the 300 Area and the mobile laboratories, located in the 200 Areas and 300 Area. The 3728 Building is a sample receiving and shipping facilities that supports cleanup actions conducted by the Environmental Restoration Contractor

365

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

366

Combine mobile monitoring conception  

International Nuclear Information System (INIS)

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.)

367

Mobile contingency unit  

Energy Technology Data Exchange (ETDEWEB)

This paper is aimed at presenting what is already a reality in TRANSPETRO in the area covered by OSBRA, a pipeline that carries by-products to the Mid-West region of Brazil. In order to meet the needs of covering occasional accidents, TRANSPETRO counts on a standardized system of emergency management. It is a great challenge to secure an efficient communication along the 964 km of extension, considering that there are shadow zones where it is not possible to use conventional means of communication such as mobile telephony and internet. It was in this context that the Mobile Contingency Unit Via Satellite - MCU was developed, to extend the communication facilities existing in fixed installations to remote places, mainly the pipeline right of ways. In case of emergency, simulation and work in the pipeline right of way, MCU is fully able to provide the same data, voice, closed-circuit TV and satellite video conference facilities that are available in any internal area of the PETROBRAS system. (author)

Silva, Sergio O. da; Magalhaes, Milton P. de [Petroleo Brasileiro S.A. (PETROBRAS), Rio de Janeiro, RJ (Brazil); Junqueira, Rodrigo A.; Torres, Carlos A.R. [PETROBRAS Transporte S/A (TRANSPETRO), Rio de Janeiro, RJ (Brazil)

2009-07-01

368

Whirlpool routing for mobility  

KAUST Repository

We present the Whirlpool Routing Protocol (WARP), which efficiently routes data to a node moving within a static mesh. The key insight in WARP\\'s design is that data traffic can use an existing routing gradient to efficiently probe the topology, repair the routing gradient, and communicate these repairs to nearby nodes. Using simulation, controlled testbeds, and real mobility experiments, we find that using the data plane for topology maintenance is highly effective due to the incremental nature of mobility updates. WARP leverages the fact that converging flows at a destination make the destination have the region of highest traffic. We provide a theoretical basis for WARP\\'s behavior, defining an "update area" in which the topology must adjust when a destination moves. As long as packets arrive at a destination before it moves outside of the update area, WARP can repair the topology using the data plane. Compared to existing protocols, such as DYMO and HYPER, WARP\\'s packet drop rate is up to 90% lower while sending up to 90% fewer packets.

Lee, Jung Woo

2010-01-01

369

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.)

370

The Mobile Chamber  

Science.gov (United States)

A document discusses a simulation chamber that represents a shift from the thermal-vacuum chamber stereotype. This innovation, currently in development, combines the capabilities of space simulation chambers, the user-friendliness of modern-day electronics, and the modularity of plug-and-play computing. The Mobile Chamber is a customized test chamber that can be deployed with great ease, and is capable of bringing payloads at temperatures down to 20 K, in high vacuum, and with the desired metrology instruments integrated to the systems control. Flexure plans to lease Mobile Chambers, making them affordable for smaller budgets and available to a larger customer base. A key feature of this design will be an Apple iPad-like user interface that allows someone with minimal training to control the environment inside the chamber, and to simulate the required extreme environments. The feedback of thermal, pressure, and other measurements is delivered in a 3D CAD model of the chamber's payload and support hardware. This GUI will provide the user with a better understanding of the payload than any existing thermal-vacuum system.

Scharfstein, Gregory; Cox, Russell

2012-01-01

371

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.

372

Two measurement modes for mobile phone optical sensing  

OpenAIRE

The use of a mobile phone for classification and quantification of liquid samples is described. The screen of the phone is used for controlled illumination and the front side camera for imaging. No additional optical equipment is needed. It is shown that there are different regions of the captured image containing different information about the sample. One region contains light that has been specular reflected at the air-liquid interface and one is dominated by light that has propagated thro...

Eriksson, Mats; Iqbal, Zafar

2014-01-01

373

Fringe Benefits and Labor Mobility.  

Science.gov (United States)

Reports the results of testing a microeconomic model of the effects of fringe benefits on labor mobility. Results indicate that the probability of worker mobility drops 20 percent when a pension promise is made to male workers. Females' response is somewhat less. Other fringes affect turnover less strongly. (CT)

Mitchell, Olivia S.

1982-01-01

374

A Mobile Consumer Analysis Platform  

OpenAIRE

Advances in mobile communication, computing and positioning technologies allow the real–time acquisition of continuously evolving locations of moving objects, e.g., users carrying location-aware mobile devices. This short paper proposes the geo-contextual analysis and data mining of these location traces to deliver deep insight into consumer behavior and enable a number of promising Business Intelligence services.

Gidofalvi, Gyo?zo?

2010-01-01

375

Individual mobility: issues and assessment  

Energy Technology Data Exchange (ETDEWEB)

Problems relating to mobility will intensify in developing countries due to explosive growth in motorization. In the Western countries, individual travel needs will change as a result of demographics (e.g. an increase in the elderly population, working women and single person households), and new information and communication technology. Increased congestion and global warming are the principal concerns that impact mobility. To respond to these concerns, significant mobility improvements can be realized by replicating successful mobility strategies that have been implemented in some cities throughout the world. However, a more fundamental reappraisal will be necessary that considers mobility in an overall sustainability context. Intelligent transportation systems (ITS) may provide a framework for a new mobility infrastructure that enables implementation of a dynamic transportation system. Such a system can adapt on a real-time basis to customer needs and social concerns. ITS enables pricing and control strategies to be more easily utilized on an episodic basis. Development of a rational approach to sustainable mobility requires the public and private sectors as well as various stakeholders to develop a shared vision of the future, since mobility goes beyond national and competitive interests. (author) 3 figs.

Roos, D. [Massachusetts Inst. of Technology, Center for Technology, Policy and Industrial Development, Cambridge, MA (United States)

1996-11-01

376

Perancangan Dashboard Mobil Pedesaan Multiguna  

Directory of Open Access Journals (Sweden)

Full Text Available Mobil GEA yang merupakan mobil nasional akan dikembangkan menjadi mobil pedesaan multiguna. Salah satu bagian dalam mobil GEA yang menjadi perhatian adalah dashboard. Selama ini dashboard mobil GEA diproduksi secara manual, yaitu menggunakan proses wet lay-up dengan bahan komposit. Rencana ke depan produksi mobil pedesaan multiguna adalah produksi massa. Untuk memenuhi kebutuhan tersebut dirancang proses cetakan injeksi plastik (injection molding untuk pembuatan dashboard mobil pedesaan multiguna. Dibuat dua buah konsep dashboard, yaitu konsep A dan konsep B yang mengacu pada list of requirements. Simulasi pembebanan dan proses injection molding dengan material acrylonitrile butadiene styrene dilakukan pada kedua konsep tersebut. Beban yang diberikan adalah beban statis sebesar 100 N pada bagian atas dashboard dan 50 N pada masing-masing laci dashboard. Dari hasil perancangan, khususnya proses scoring ditetapkan konsep B sebagai alternatif dashboard untuk mobil pedesaan multiguna. Dari hasil simulasi pembebanan yang dilakukan, didapatkan nilai tegangan maksimal yang terjadi pada dashboard adalah 1.35 MPa dengan defleksi sebesar 0.237 mm. Sedangkan dari hasil simulasi proses injection molding didapatkan waktu produksi tiap dashboard adalah 246 detik (4.1 menit dengan gaya cekam maksimal 2370 ton.

Nurul Madinah

2013-09-01

377

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

378

Social Mobility and Educational Selection  

Science.gov (United States)

There is a close interactive relationship between social mobility and educational selection. On one side, the character, direction, speed, level, methods and trends of social mobility affect the aims, goals, functions, scope, strategy, content and methods of choice in education. On the other side, the goals, basis and means of choosing education…

Dong, Zefang; Wang, Yanbin; Chen, Wenjiao

2009-01-01

379

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

380

Bi-Modal Biometric Authentication on Mobile Phones in Challenging Conditions  

OpenAIRE

This paper examines the issue of face, speaker and bi-modal authentication in mobile environments when there is significant condition mismatch. We introduce this mismatch by enrolling client models on high quality biometric samples obtained on a laptop computer and authenticating them on lower quality biometric samples acquired with a mobile phone. To perform these experiments we develop three novel authentication protocols for the large publicly available MOBIO database. We evaluate state-of...

Khoury, Elie; El Shafey, Laurent; Mccool, Chris; Gu?nther, Manuel; Marcel, Se?bastien

2013-01-01

381

Pseudo-Random Sequence Modifications for Ion Mobility Orthogonal Time of Flight Mass Spectrometry  

OpenAIRE

Due to the inherently low duty cycle of ion mobility spectrometry (IMS) experiments that sample from continuous ion sources, a range of experimental advances have been developed to maximize ion utilization efficiency. The use of ion trapping mechanisms prior to the ion mobility drift tube has demonstrated significant gains over discrete sampling from continuous sources; however, these technologies have traditionally relied upon a signal averaging to attain analytically relevant signal-to-nois...

Clowers, Brian H.; Belov, Mikhail E.; Prior, David C.; Danielson, William F.; Ibrahim, Yehia; Smith, Richard D.

2008-01-01

382

Acceptance of Mobile Banking Services in Makassar: A Technology Acceptance Model (TAM) Approach  

OpenAIRE

Mobile banking services is a relatively new banking services. This study aims to look customer acceptance of mobile banking services in Makassar and the influencing factors using the Technology Acceptance Model (TAM) framework. The design of this study is causal and descriptive with sample of 180 customers selected by convenience and accidental sampling. Data were collected through structured interviews with a questionnaire. The results showed that (1) Perceived Ease of Use signif...

Munir, Abdul Razak

2008-01-01

383

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

384

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

385

Vehicular Mobility Simulation For VANET  

Directory of Open Access Journals (Sweden)

Full Text Available The study of vehicular ad-hoc networks (VANETs requires efficient and accurate simulation tools. As the mobility of vehicles and driverbehaviour can be affected by network messages, these tools must include a vehicle mobility model integrated with a quality network simulator. We present the first implementation of a well known vehicle mobility model to NS-3.Vehicular ad-hoc networks are self organised networks built up from moving vehicles, and are part of the broader class of Mobile ad-hoc networks (MANET.One of the main challenges posed by VANET simulation is the faithful characterization of vehicular mobility at both macroscopic and microscopic levels, leading to realistic non-uniform distributions of cars and velocity, and unique connectivity dynamics. In this paper, we first present and describe VanetMobiSim, a freely available generator of realistic vehicular movement traces for networks simulators.

Miss.Shruti S.Khope

2013-05-01

386

Clean mobility; future strategy  

International Nuclear Information System (INIS)

As much the energy as the transport have been fundamental pillars of the humanity's development. Their importance is evidenced when observing the map of Colombia: our more old, bigger or more important cities are located along the axis demarcated by the natural access roads of our geography: the rivers Magdalena and Cauca. Regions of big natural wealth, as the oriental plains, are punctually developed and you only consent to the progress when roads that connect them with the rest of the country appear. The transport allows the connection among the sources of resources, the production complexes and the consumption centers. It is clear that it has deep relationship with the employment, the health, the education and other activities that impact in the quality of life of the towns and it also constitutes the essential nucleus of industrial and commercial processes to whose surroundings rotate the economic development of regions or countries. Without physical access to resources and markets is stagnation of the development and the mitigation of the poverty is untenable in the time. During the second half of the century nineteen, with the population's growth and of the trade activities, derived of the industrial revolution, the sector transports it was developed in two big fronts of a part, it gave answer to the necessities of mobility in the nascent cities and of another it connected the productive centers with the consumption centers in the whole orb. In that time, the coers 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

387

Scenario Analysis on LTE mobile network virtualization  

OpenAIRE

The LTE mobile network has dominated the mobile market nowadays. However, the LTE mobile network cannot deal with the growing data traffic due to the insufficient capacity and lack of network flexibility. The LTE mobile network virtualization, on the other hand, is a technology enable the LTE mobile network to meet those increasing requirements. Some researches of the LTE mobile network virtualization have been done in terms of the technology study and cost measurement. Yet, no research deplo...

Bai, Xue

2013-01-01

388

Factors Influencing the Quality of Mobile Applications  

OpenAIRE

Mobile applications are becoming increasingly used. Mobile devices are becoming indispensable for the user. In the material are claiming the sales of mobile devices internationally and the use of mobile applications compared to traditional internet use on desktop systems for the United States. Are presented influences the quality of mobile applications and based on these influencing factors built a model of choice for optimal application of mobile applications and traditional desktop applicat...

Zamfiroiu, Alin

2014-01-01

389

THE IMPACT OF INTERNET AND MOBILE BANKING  

Directory of Open Access Journals (Sweden)

Full Text Available INTRODUCTION MEANING OFMOBILE BANKING Mobile banking is a system that allows customers of a financial institution to conduct a number of financial transactions through a mobile device such as a mobile phone or personal digital assistant. Mobile banking differs from mobile payments, which involve the use of a mobile device to pay for goods or services either at the point of sale or remotely,[1] analogously to the use of a debit or credit card to effect an EFTPOS payment.

R. Sundhararaman

2015-03-01

390

Einsatz mobiler Technologie zur Unterstützung von Geschäftsprozessen  

OpenAIRE

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

391

Throughput Optimization in Mobile Backbone Networks  

OpenAIRE

This paper describes new algorithms for throughput optimization in a mobile backbone network. This hierarchical communication framework combines mobile backbone nodes, which have superior mobility and communication capability, with regular nodes, which are constrained in mobility and communication capability. An important quantity of interest in mobile backbone networks is the number of regular nodes that can be successfully assigned to mobile backbone nodes at a given throughput level. This ...

Craparo, Emily M.; How, Jonathan P.; Modiano, Eytan H.

2009-01-01

392

Mobile Learning System based on Cloud Computing  

OpenAIRE

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

393

Data Management Infrastructure for the Mobile Web  

DEFF Research Database (Denmark)

The Internet is going mobile, and indications are that the mobile Internet will be "bigger" than the conventional Internet. Due to aspects such as user mobility, much more diverse use situations, and the form factor of mobile devices, context awareness is important on the mobile Internet. Focusing on geo-spatial context awareness, this talk covers research that aims to build infrastructure for mobile data management.

Jensen, Christian SØndergaard

2009-01-01

394

Developing Online Promotion Mix For Mobile Application  

OpenAIRE

The proliferation of mobile phones has led to a growing number of mobile applications on the market. As a result, the mobile application market has been more competitive than ever with many players. This requires any mobile application company to adopt a strategic online promotion mix to increase its market share and user base. Company X is a mobile application company whose main product is a mobile web browser called product X. Product X aims at providing better browsing experiences to t...

Dieu Hong Tran, Thi

2013-01-01

395

Distinctive Features of Mobile Messages Processing  

OpenAIRE

World’s mobile market pushes past 2 billion lines in 2005. Success in these competitive markets requires operational excellence with product and service innovation to improve the mobile performance. Mobile users very often prefer to send a mobile instant message or text messages rather than talking on a mobile. Well developed “written speech analysis” does not work not only with “verbal speech” but also with “mobile text messages”. The main purpose of our paper is, f...

Braithwaite, Ken; Lishman, Mark; Lovitskii, Vladimir; Traynor, David

2007-01-01

396

Environmental sampling  

International Nuclear Information System (INIS)

Following the discovery of Iraq's clandestine nuclear weapons program after the Gulf War, the IAEA Standing Advisory Group on safeguards Implementation submitted its recommendations for improving the effectiveness and efficiency of the safeguards system. One of the principal recommendations for a strengthened safeguards system was to assess the effectiveness and costs of environmental monitoring to detect undeclared nuclear activities at declared sites and at sites not declared. The implementation of swipe sampling for routine IAEA safeguards under the 1995 strengthening measures is well underway. Sampling guidelines and plans have been developed to optimize sample collection and analysis. Baseline swipe samples have been collected at some 900 sampling points in more than 60 enrichment plants and hot cell complexes under safeguards with additional facilities to ne samples this year. Some 150 inspectors have been trained in proper techniques for sample collection and handling using approved procedures with standardized sampling kits. The IAEA Clean laboratory supports the implementation in receiving, screening, distributing, and archiving of the swipe samples. It is anticipated that implementation of environmental sampling under existing Agency authority will be extended to other types of nuclear facilities. With the approval of the Model Protocol by the Boards of Governors in May 1997 which provides the Agency with complementary legal authority to apply safeguards, environmental sampling may eventually include the collection of other types of samples exterior to facilities and sites

397

An Empirical Assessment of Service Quality of Cellular Mobile Telephone Operators in Pakistan  

Directory of Open Access Journals (Sweden)

Full Text Available Purpose:  The purpose of this study was to examine the dimensions of users’ perceived service quality of cellular mobile telephone operators in Pakistan.Research design / methodology: A structured questionnaire, covering SERVQUAL dimensions of tangible, reliability, assurance, empathy, responsiveness, and additional dimensions of network quality and convenience, was used to measure mobile phone users’ perception about service quality. Convenience sample of 800 mobile phone users was used to collect the data. Confirmatory factor and multiple regression analysis were conducted.Finding: The adapted SERVQUAL with additional dimensions was found to be a valid instrument to measure service quality in mobile phone services. The dimensions of tangible, assurance, responsiveness, empathy, convenience, and network quality found to have positive and statistically significant relationship with mobile phone users’ perceived service quality. Convenience and network quality dimensions found to be relatively most important dimensions affecting users’ perception. The dimension of reliability did not reflect significant effect on customers’ perception of quality.Research limitations/implications: Convenience sample was used to measure mobile phone users’ perception of service quality. Practical implications: SERVQUAL is a valid instrument to measure service quality in cellular mobile telephone operators in Pakistan. Inclusion of additional dimensions and items make it more comprehensive for application in telecommunication services. The dimensions of network quality, convenience, and reliability are important aspects that need managerial attention to attract and retain customers. The regulators in telecommunication industry should take appropriate measure to include these dimensions in undertaking objective assessment of quality of service of cellular mobile telephone operators in Pakistan in safeguarding customers’ interest.Originality/value:  Few studies on cellular mobile phone users’ perception of service quality using SERVQUAL, and additional dimensions of convenience and network quality has been carried out in Pakistan. The current study has improved the understanding of mobile phone users’ perception of quality for mobile phone operators, and regulators, beside its practical implications for telecommunication industry in Pakistan. Key Words: Customer service quality, SERVQUAL, Mobile communication service, Pakistan

Muhammad Asif Khan

2010-09-01

398

An Investigation about obstacles of Mobile Commerce in Iran (A case study in Saravan City  

Directory of Open Access Journals (Sweden)

Full Text Available The main purpose of the present paper is an investigation about obstacles and challenges in development of mobile commerce in Iran. To notice the present infrastructure and the ratio of high influence of mobile commerce and its availability and being at the hand of common people as one of main tools in mobile commerce, in the world as well as in Iran, people have tendency and are going for mobile commerce and it is also attracting general attentions of people. In this paper it investigate the unique benefits of mobile commerce using a descriptive field survey to access barriers and obstacles which are facing to the development of mobile commerce. Samples and statistical research population are teachers in Saravan city of Sistan and Baluchestan in south of Iran which are using mobile phone for paying light and water bills or doing business and financial transactions. The samples were choosing among 300 of so-call teachers which selected in order random tools of data collection was questionnaire which collected after 15 days. The data were analyzed by SPSS software. The result of this analysis is showing that information technology, in the development of mobile commerce is facing many problems and challenges such as: the limitation in extension of internet band, inappropriate user accepted connector mobile equipments, none existence of using mobile commerce culture in trade, lack of the security feeling for users technical equipment limitations and also mobile network stability. And scale of importance of each one from the view of users is different. At the end to overcome these problems and barriers and to accelerate the development of mobile commerce which is the requirement of the modern life, with the results based on and come out from the present paper some strategies are going to be shown.

Baqer Kord

2012-03-01

399

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

400

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

401

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

402

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.

403

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

404

Appliance Mobile Positioning System (AMPS) (An Advanced mobile Application)  

OpenAIRE

An AMP is a project where the goal is to enhance the experience of locating friends and family by using GPS and standard web technology. This has lead to a design consisting of three parts: a mobile client, a repository, a web client, and a map service. The mobile client, which consists of a mobile phone and a GPS receiver, can be used to find the location of family and friends and send sms, when someone is nearby by users to see the real location and positions. These data can be sends it thr...

Arash Habibi Lashkari; Edmund Ng Giap Weng; Behrang Parhizkar,; Hameedur Rahman

2010-01-01

405

Mobile and Social: Ten Best Practices for Designing Mobile Applications  

OpenAIRE

This paper gives ten best practices for designing mobile applications that have social-networking functions. The need for such an approach is given by the rapid growth in impor-tance of both social networks and mobile applications. In order to make it easy to follow where the best practices come from, the paper starts with a look at why social networks are more than just a buzz word and at how the field of mobile applications is evolving. It also shows how and why the two fields go together s...

Lica, Liviu

2010-01-01

406

Analysis of the Contextual Behaviour of Mobile Subscribers  

Science.gov (United States)

In this paper, contextual behavior of mobile subscribers is studied with data collected straight from smartphones. The paper develops an approach to study how people use mobile devices in different contexts, by proposing an algorithm that works with device-based sensor data. This approach consists of context detection and data analysis. The context detection algorithm analyses cellular network radio logs in modeling the location of people. This paper then analyses usage patterns over different contexts. Demonstration of the contextual modeling with a sample of Finnish smartphone users proves that the applications of the approach are numerous.

Verkasalo, Hannu; Salmeron, Borja Jimenez

407

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

408

Leucocyte mobilization to skin lesions  

International Nuclear Information System (INIS)

Leucocyte mobilization to a chamber covering a skin lesion was studies in healthy volunteers.111Indium-labelled blood leucocytes accumulated in the chambers, indicating mobilization of leucocytes from the blood. The concentration of autologous serum in the chamber medium influenced the number of leucocytes mobilized, while heat inactivation of serum or the repeated use of the same serum had no effect on the counts. The use of zymosan-treated increased the mobilization by up to 53 %. The kinetics for the mobilization of leucocytes to chambers containing autologous serum was followed in healthy subjects. The mobilization showed a uniform pattern, viz. a lag phase of 2-4 hours and maximal migration rates after 20-24 hours. The cumulated counts were 74 x 106 leucocytes/cm2/24 hours and 200 x 106leucocytes/cm2/48 hours. Females and males exhibited the same kinetics and cumulated counts. Chamber leucocytes were predominantly neutrophil granulocytes (85-100 %) with 2.9-3.6 nuclear segments. The chamber technique provides a simple method permitting quantitation of in vivo mobilization of leucocytes from the blood to an inflammatory lesion. (author)

409

The Coevolution of Mobile OS User Market and Mobile Application Developer Community  

Directory of Open Access Journals (Sweden)

Full Text Available Mobile computing is becoming increasingly popular. Accordingly, mobile OS (operating systems are becoming standard platforms for regular computer and phone users. This paper studies the evolution and the current status of mobile OS user market and mobile application developer community. In particular, we study how smartphone mobile OS user market coevolves with its application developer community. Through this study, we highlight the symbiosis relations between mobile OS user market and mobile apps developer community.

Liguo Yu

2013-02-01

410

Mobile Agents and Mobile Devices: Friendship or Dif?cult Relationship?  

OpenAIRE

Mobile agent technology has traditionally been recognized as a very useful approach to build applications for mobile computing and wireless environments. However, only a few studies report practical experiences with mobile agents in a mobile medium. This leads us to the following question: can current mobile agent platforms be used effectively in environments with mobile devices?
In this paper, we study existing mobile agent platforms by analyzing if they are suitable or not in a ...

Eduardo Mena; Raquel Trillo; Sergio Ilarri; Oscar Urra

2009-01-01

411

Room-temperature observations of the weak localization in low-mobility graphene films  

Energy Technology Data Exchange (ETDEWEB)

We report room-temperature observations of the quantum conductance corrections caused by the weak localization in graphene films synthesized using solid-state-source chemical vapor deposition. Both Raman spectroscopy and Hall measurements showed strong disorder in the samples with a low mobility of ?430 cm{sup 2}/V s. The emergence of weak localization at room temperature arises from the competition between the valley-dependent scattering and the thermal dephasing in such low-quality samples, although quantum effects normally appear in the samples that have an ideal structure at cryogenic temperatures. The large disorder in our low-mobility samples unexpectedly preserved the quantum mechanical weak localization.

Han, Junhao; Wang, Shanyue; Qian, Di; Song, Fengqi, E-mail: songfengqi@nju.edu.cn, E-mail: bgwang@nju.edu.cn; Wang, Baigeng, E-mail: songfengqi@nju.edu.cn, E-mail: bgwang@nju.edu.cn; Han, Min; Zhou, Jianfeng [National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093 (China); Wang, Xinran; Wang, Xuefeng [School of Electrical and Electronic Engineering, Nanjing University, Nanjing 210093 (China)

2013-12-07

412

Hydrogen mobility in Wadsleyite at low temperatures  

Science.gov (United States)

Mantle ringwoodite and wadsleyite may incorporate large amount of H in their structure (up to several wt % H2O). A good knowledge of hydrogen diffusion in these mineral phases and its relationship with their electrical conductivity is critical to estimate the real amount of water present in the transition zone. We synthesized wadsleyite samples from forsterite powder with a minute amount of water by multi-anvil presses at 16 GPa - 1100°C and 19 GPa - 1600°C. The two different conditions produced samples with different grains size: less than 5 ?m and 150 - 200 ?m, respectively. The fine grained sample contains around 300 ppm wt% H2O while samples with coarse grains contain around 40 ppm wt% H2O. All synthesized samples show major IR peaks at 3322, 3350 and 3372 cm-1 with minor peaks at 3726, 3665, 3615, 3472 and 3208 cm-1. 100 to 200 microns thick slices were annealed at room pressure in OD enriched atmosphere at 350°C for the fine grained sample and 400 and 450°C for the coarse grained samples. The same OH extraction behaviour is observed in the three slides annealed: Bands at 3372, 3350 and 3322 cm-1 are rapidely lost with a kinetics of the order of 10-15 m-2/s at 350°C, while bands at 3615 and 3208 cm-1 are more stable with a diffusion rate almost 100 times slower. H-D exchange performed on the fine grained sample shows a diffusion rate intermediate between the two extraction rates (5 10-16 m2/s). The dual kinetics behaviour observed shows clearly the presence of two different types of hydrogen-defects in wadsleyite. It is the first time that hydrogen "self-diffusion" is measured in wadsleyite through H-D exchange experiments an essential parameter for understanding H mobility.

Vigouroux, E.; Ingrin, J.; Depecker, C.; Bolfan-Casanova, N.; Frost, D. J.

2012-12-01

413

Mobile and Social: Ten Best Practices for Designing Mobile Applications  

Directory of Open Access Journals (Sweden)

Full Text Available This paper gives ten best practices for designing mobile applications that have social-networking functions. The need for such an approach is given by the rapid growth in impor-tance of both social networks and mobile applications. In order to make it easy to follow where the best practices come from, the paper starts with a look at why social networks are more than just a buzz word and at how the field of mobile applications is evolving. It also shows how and why the two fields go together so well. To further make the point, there is a case study of four interesting mobile applications that are textbooks examples of successful applications. The best practices are based on research done for this article and on the extensive knowledge of the author.

Liviu LICA

2010-01-01

414

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

415

NASA's mobile satellite development program  

Science.gov (United States)

A Mobile Satellite System (MSS) will provide data and voice communications over a vast geographical area to a large population of mobile users. A technical overview is given of the extensive research and development studies and development performed under NASA's mobile satellite program (MSAT-X) in support of the introduction of a U.S. MSS. The critical technologies necessary to enable such a system are emphasized: vehicle antennas, modulation and coding, speech coders, networking and propagation characterization. Also proposed is a first, and future generation MSS architecture based upon realized ground segment equipment and advanced space segment studies.

Rafferty, William; Dessouky, Khaled; Sue, Miles

1988-01-01

416

Exploring mobile learning success factors  

OpenAIRE

This paper is a comparative account and analysis of three mobile Web 2.0 projects instigated within a tertiary learning environment during 2008. Following the successful instigation of a mobile Web 2.0 project in the third year of a Bachelor of Product Design course during semester one, similar projects were initiated in semester two within the first-year and second-year Bachelor of Product Design courses. A common methodology for supporting and facilitating mobile Web 2.0 projects was used f...

Cochrane, Thomas D.

2010-01-01

417

Sustainable Mobility : Concerns from Practice  

DEFF Research Database (Denmark)

This paper combines strands of mobilities theory and planning theory, and develops a qualitative approach to look across emerging planning practices. By actively following 8 Danish urban and transport planners, over the course of 2 years, we learn how their practices have changed, inspired by mobility management, a concept aiming to reduce carbon emissions from transportation in western societies. The article focuses on how municipal planners formulate the role of mobility management activities organized around private companies, and how their practices are connected to wider ideas on planning.

Kjærulff, Aslak Aamot

418

Mobile versus fixed site lithotripsy.  

OpenAIRE

The efficacy of a mobile Dornier HM4 lithotriptor, was compared with that of a fixed site Siemens Lithostar. A total of 115 calculi in 98 patients were treated, 55 on the mobile Dornier and 60 on the Lithostar. The groups were similar except for stone size, the mean of the Lithostar group being 11 mm compared with 7.7 mm in the Dornier group. Fragmentation rates were not significantly different, 88% and 75% on the mobile and fixed site machines, respectively and, at 3 months follow-up 66% and...

Lewis, C.; Burgess, N. A.; Feneley, R. C.; Matthews, P. N.

1991-01-01

419

Mission Management for Mobile Robots  

OpenAIRE

For at least a decade a forthcoming advent of mobile robots in our everyday environments has been predicted by both media and researchers. Still we rarely meet relatives to the SciFi robots R2D2 or C3PO in our livingrooms or in our oces at work. Despite the constant evolution of advanced algorithms for mobile robot navigation, applications for mobile robots are eectively limited by the capabilities of planning and error-handling in the robot control software frameworks. T...

Beck, Anders Billesø; Andersen, Nils Axel; Ravn, Ole

2009-01-01

420

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

421

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

422

Dengue epidemics and human mobility  

CERN Document Server

In this work we explore the effects of human mobility on the dispersion of a vector borne disease. We combine an already presented stochastic model for dengue with a simple representation of the daily motion of humans on a schematic city of 20x20 blocks with 100 inhabitants in each block. The pattern of motion of the individuals is described in terms of complex networks in which links connect different blocks and the link length distribution is in accordance with recent findings on human mobility. It is shown that human mobility can turn out to be the main driving force of the disease dispersal.

Barmak, Daniel H; Otero, Marcelo; Solari, Hernán G

2011-01-01

423

Dengue epidemics and human mobility  

Science.gov (United States)

In this work we explore the effects of human mobility on the dispersion of a vector borne disease. We combine an already presented stochastic model for dengue with a simple representation of the daily motion of humans on a schematic city of 20×20 blocks with 100 inhabitants in each block. The pattern of motion of the individuals is described in terms of complex networks in which links connect different blocks and the link length distribution is in accordance with recent findings on human mobility. It is shown that human mobility can turn out to be the main driving force of the disease dispersal.

Barmak, D. H.; Dorso, C. O.; Otero, M.; Solari, H. G.

2011-07-01

424

Value Creation of Mobile Coupons  

OpenAIRE

AbstractTitleValue Creation of Mobile CouponsBackgroundCoupons have been around for years in traditional paper form where they have for instance been found in grocery stores located directly by the product they offer a discount on. Lately, mobile phones have come to play a greater part of our lives where they are also getting integrated into activities we conduct. This has been of interest for the fast moving consumer goods (FMCG) industry where integration of the mobile phone has arisen to a...

Lundquist, Filip; Vera, George

2011-01-01

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

Mobile prototyping with Axure 7  

CERN Document Server

This book is a step-by-step tutorial which includes hands-on examples and downloadable Axure files to get you started with mobile prototyping immediately. You will learn how to develop an application from scratch, and will be guided through each and every step.If you are a mobile-centric developer/designer, or someone who would like to take their Axure prototyping skills to the next level and start designing and testing mobile prototypes, this book is ideal for you. You should be familiar with prototyping and Axure specifically, before you read this book.

Hacker, Will

2013-01-01

427

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

428

The Future of Mobile Security  

OpenAIRE

Mobile devices are more than just phones, they are a lifeline to the outdoor world, entertainment platform, GPS system, a little black book and a shopping and banking tool. What is not well known is that these devices are also gateways. Mobile devices can be used by a hacker as an access point into many other aspects of your digital life as well the lives of others in your network, making mobile security about more than just protecting your phone. This is an overview of tech...

Certic, Stefan

2013-01-01

429

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

430

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)

431

Sample Size  

Science.gov (United States)

In this interactive, online activity students elect a simple random sample to draw conclusions from data as presented in the Hubble Deep Field-North and Hubble Deep Field-South images. The optimal sample size is determined by exploring sample variability, which is introduced through a min/max plot. The mean and median are added in order to pinpoint the spot where variability settles down and the measures of central tendency approach a constant value. The point where that first occurs is the smallest reasonable sample size. Students may work independently or in small groups to complete each activity. This interactive online activity is apart of the online exploration "Galaxy Hunter." Detailed teacher pages, identified as Teaching Tips on the title pages of the activity, provide science background information, lesson plan ideas, related resources, and alignment with national education standards. Use sample variability to determine optimal sample size.

2012-08-03

432

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.)

433

The Mobile Data Challenge: Big Data for Mobile Computing Research  

OpenAIRE

This paper presents an overview of the Mobile Data Challenge (MDC), a large-scale research initiative aimed at generating innovations around smartphone-based research, as well as community-based evaluation of related mobile data analysis methodologies. First we review the Lausanne Data Collection Campaign (LDCC) an initiative to collect unique, longitudinal smartphone data set for the basis of the MDC. Then, we introduce the Open and Dedicated Tracks of the MDC; describe the specific data set...

Laurila, J. K.; Gatica-perez, Daniel; Aad, I.; J, Blom; Bornet, Olivier; Do, Trinh-minh-tri; Dousse, O.; Eberle, J.; Miettinen, M.

2012-01-01

434

Assessing Mobile Phone Service with the Greatest Positive Effect on Firm Performance: A Case Study of Thika Town in Kenya  

Directory of Open Access Journals (Sweden)

Full Text Available The purpose of this study was to assess mobile phone service with the greatest positive effect on firm performance in Thika town in Kenya. It adopted an exploratory design where a two-stage, Stratified and Simple random sampling, technique was employed. A total of 120 questionnaires were personally administered- yielding a response rate of 100%. Data was subjected to detailed exploratory analysis through descriptive procedures. Reliability and internal consistency of the measurement models was tested using Cronbach’s alpha. Results of the study revealed that mobile calls have the greatest positive effect on performance of manufacturing firms. M-pesa ranked second, Mobile messaging third while mobile internet and mobile banking ranked fourth and fifth respectively. It is evident that mobile phone calls, M-pesa, and Mobile instant messaging had positive significant effect on sales volume, Profit, worker productivity and Customer satisfaction ratings among others

Professor H.Bwisa

2012-04-01

435

AN AGENT BASED TRANSACTION PROCESSING SCHEME FOR DISCONNECTED MOBILE NODES  

OpenAIRE

We present a mobile transaction framework in which mobile users can share data which is stored in the cache of a mobile agent. This mobile agent is a special mobile node which coordinates the sharing process. The proposed framework allows mobile affiliation work groups 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. The data Access Manager mod...

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

2010-01-01

436

Scaling behavior in ranking mobility of Chinese stock market  

Science.gov (United States)

As an aggregate measure of the variations in individuals, the analysis of mobility provides a substantial and comprehensive perspective into the complexity of socio-economic systems. In this paper, we introduced the ranking mobility index to measure the ranking variations of the stocks in Chinese stock market over time. Using the daily data of 837 constituent stocks of the Shanghai A-Stock Composite Index from January 1, 2002 to December 31, 2012, we examined respectively the dependence of ranking mobility with respect to the absolute return, trading volume and turnover ratio on the sampling time interval. The scaling property is observed in all three relations. The fact of long relaxation times gives evidence of long memory property in the stock ranking orders.

Wu, Ke; Xiong, Wanting; Weng, Xin; Wang, Yougui

2014-08-01

437

Mobility of heavy metals in dredged harbor sediments  

International Nuclear Information System (INIS)

Solubility, mobility, and bioavailability of sediment-bound metals can be increased by four major factors: (1) Lowering of pH; (2) changing of redox conditions; (3) formation of organic complexes; and (4) increasing salinity. While the first two factors are particularly important for on-land deposition of dredged materials, the effect of salinity is particularly important for resuspended cadmium-rich sediments in estuaries. Chemical extraction studies, which were carried out under carefully controlled conditions on both fresh and freeze-dried samples, indicate that aeration of anoxic sediments (e.g., on-land disposal) may both increase and decrease the mobility of heavy metals. Transformation from sulfidic or carbonatic associations to oxidic phases will reduce mobility of manganese, wherease the respective changes from moderately reducible forms to carbonatic and easily reducible phases will enhance the reactivity of zinc during oxidation of dredged material

438

DESIGN ARCHITECTURE FOR NEXT GENERATION MOBILE TECHNOLOGY  

Directory of Open Access Journals (Sweden)

Full Text Available The need for fourth generation mobile networks originates with ever increasing mobility and the convergence of traditional telecommunication networks and content services. A fourth generation (4G mobile network combines several traditional technologies toprovide personal communication and content services for its mobile users

E.Bharathi1

2011-12-01

439

DESIGN ARCHITECTURE FOR NEXT GENERATION MOBILE TECHNOLOGY  

OpenAIRE

The need for fourth generation mobile networks originates with ever increasing mobility and the convergence of traditional telecommunication networks and content services. A fourth generation (4G) mobile network combines several traditional technologies toprovide personal communication and content services for its mobile users

Bharathi, E.

2011-01-01

440

Securing Mobile Cloud Using Finger Print Authentication  

Directory of Open Access Journals (Sweden)

Full Text Available Mobile cloud computing becomes part of mobile usersdaily life transactions. Mobile devices with Internetcapabilities have increased the use of mobile clouding computing. Due to hardware limitations in mobiledevices, these devices can't install and run applications require heavy CPU processing or extensivememory. Cloud computing allows mobile users to synchronize their data with remote storage and utilizeapplications require heavy CPU processing or extensive memory such as Microsoft Office or AdobePhotoshop, as they run in a desktop computer.The combination of cloud computing and mobile computing introduces mobile cloud computing, which alsopresent new issues of security threats such as unauthorized access to resources exist in mobile cloud.Protecting mobile cloud computing from illegitimateaccess becomes an important concern to mobile users.This paper proposes and implements a new user authentication mechanism of mobile cloud computingusing fingerprint recognition system. Fingerprint images of mobile users can be captured and processedusing mobile phone camera to access mobile cloud computing . The implementation of the proposedsolution in different mobile operating systems anddevices show security enhancement in mobile cloudcomputing with accepted performance level

IehabALRassan

2013-11-01

441

Adaptive Device Context Based Mobile Learning Systems  

Science.gov (United States)

Mobile learning is e-learning delivered through mobile computing devices, which represents the next stage of computer-aided, multi-media based learning. Therefore, mobile learning is transforming the way of traditional education. However, as most current e-learning systems and their contents are not suitable for mobile devices, an approach for…

Pu, Haitao; Lin, Jinjiao; Song, Yanwei; Liu, Fasheng

2011-01-01

442

Viewing Mobile Learning from a Pedagogical Perspective  

Science.gov (United States)

Mobile learning is a relatively new phenomenon and the theoretical basis is currently under development. The paper presents a pedagogical perspective of mobile learning which highlights three central features of mobile learning: authenticity, collaboration and personalisation, embedded in the unique timespace contexts of mobile learning. A…

Kearney, Matthew; Schuck, Sandra; Burden, Kevin; Aubusson, Peter

2012-01-01

443

Advances in mobile mapping technology  

CERN Document Server

The growing market penetration of Internet mapping, satellite imaging and personal navigation has opened up great research and business opportunities to geospatial communities. Multi-platform and multi-sensor integrated mapping technology has clearly established a trend towards fast geospatial data acquisition. Sensors can be mounted on various platforms, such as satellites, aircrafts or helicopters, terrestrial vehicles, water-based vessels, and may even be hand-carried by individuals. Mobile mapping refers to a means of collecting geospatial data using mapping sensors mounted on a mobile platform. Its development was primarily driven by the advances in digital imaging and direct-georeferencing technologies. With the escalating use of telecommunication networks and the increasing availability of low-cost and portable sensors, mobile mapping has become more dynamic, and even pervasive. The book addresses a wide variety of research issues in the mobile mapping community, ranging from system development to sens...

Tao, C Vincent

2007-01-01

444

ASA24-Mobile (Under Development)  

Science.gov (United States)

A team of researchers at NCI in conjunction with a contract awarded to Westat, a research firm in Rockville, MD, is currently working to develop ASA24-Mobile. At this time, there is no projected completion date.

445

Mobile versus fixed site lithotripsy.  

Science.gov (United States)

The efficacy of a mobile Dornier HM4 lithotriptor, was compared with that of a fixed site Siemens Lithostar. A total of 115 calculi in 98 patients were treated, 55 on the mobile Dornier and 60 on the Lithostar. The groups were similar except for stone size, the mean of the Lithostar group being 11 mm compared with 7.7 mm in the Dornier group. Fragmentation rates were not significantly different, 88% and 75% on the mobile and fixed site machines, respectively and, at 3 months follow-up 66% and 46% were stone free or with fragments of less than 2 mm. There were no serious complications, and the incidence of mild complications was similar in the two groups. We conclude that the mobile Dornier HM4 is an effective lithotriptor and can offer several advantages over fixed site machines. PMID:1929134

Lewis, C.; Burgess, N. A.; Feneley, R. C.; Matthews, P. N.

1991-01-01

446

Going mobile: free and easy.  

Science.gov (United States)

After almost two decades, mobile technologies are now such a part of the fabric of the hospital environment that hospital libraries must take this opportunity to continue to positively impact health outcomes by providing health professionals with valuable information and services via personal digital assistants (PDAs) and smartphones. This article provides background information on mobile technology use and handheld devices. It describes how hospital librarians, regardless of staff, budget, or access to technology, can position the hospital library to connect health professionals to clinically relevant mobile resources and library services. Suggestions for the promotion of mobile resources are included, as well as tips for keeping current. A significant amount of free content is identified. PMID:21271453

Klatt, Carolyn A

2011-01-01

447

Understanding Human Mobility from Twitter  

CERN Document Server

We analyse a large dataset with more than six million get-tagged tweets posted in Australia, and demonstrate that Twitter can be a reliable source for studying human mobility patterns. We find that crucial information of human mobility, such as its multi-scale and multi-modal nature, returning tendency and regularity, as well as the heterogeneous moving scale among individuals, can be extracted from geo-tagged tweets using various statistical indicators. Our analysis of the spatial-temporal patterns for people with different moving scales shows that long-distance travellers have highly concentrated urban movements. Our study not only deepens overall understanding of human mobility but also opens new avenues for tracking human mobility.

Jurdak, Raja; Liu, Jiajun; AbouJaoude, Maurice; Cameron, Mark; Newth, David

2014-01-01

448

Promoting Function, Independence, and Mobility  

Science.gov (United States)

... Walking? Download Brochure Maximizing Independence: A Guide to Planning for Changing MS Care Needs (.pdf) Download Brochure How to Choose the Mobility Device that is Right for You (.pdf) Download ...

449

Mobile ATM Buffer Capacity Analysis  

CERN Document Server

This paper extends a stochastic theory for buffer fill distribution for multiple ``on'' and ``off'' sources to a mobile environment. Queue fill distribution is described by a set of differential equations assuming sources alternate asynchronously between exponentially distributed periods in ``on'' and ``off'' states. This paper includes the probabilities that mobile sources have links to a given queue. The sources represent mobile user nodes, and the queue represents the capacity of a switch. This paper presents a method of analysis which uses mobile parameters such as speed, call rates per unit area, cell area, and call duration and determines queue fill distribution at the ATM cell level. The analytic results are compared with simulation results.

Bush, S F; Evans, J B; Frost, V S; Bush, Stephen F.; Jagannath, Sunil; Evans, Joseph B.; Frost, Victor

1996-01-01

450

From Encounters to Plausible Mobility  

CERN Document Server

Inferring plausible node mobility based only on information from wireless contact traces is a difficult problem. Working with mobility information allows richer protocol simulations, particularly in dense networks, but requires complex set-ups to measure. On the other hand, contact information is easier to measure but only allows for simplistic simulation models. In a contact trace a lot of node movement information is irretrievably lost so the original positions and velocities are in general out of reach. In this paper, we propose a fast heuristic algorithm, inspired by dynamic force-based graph drawing, capable of inferring a plausible movement from any contact trace, and evaluate it on both synthetic and real-life contact traces. Our results reveal that (i) the quality of the inferred mobility is directly linked to the precision of the measured contact trace, and (ii) the simple addition of appropriate anticipation forces between nodes leads to an accurate inferred mobility.

Whitbeck, John; Conan, Vania; Ammar, Mostafa; Zegura, Ellen

2010-01-01

451

Unraveling stem cell and progenitor subsets in autologous grafts according to methods of mobilization : implications for prediction of hematopoietic recovery  

DEFF Research Database (Denmark)

In the autologous setting, granulocyte colony-stimulating factor (G-CSF) (G), or, when failing, G plus plerixafor (G+P), are common regimens for mobilization of stem cells into peripheral blood. To delineate mobilization effects on graft composition and hematopoietic recovery, we compared contents of stem cells and progenitor cells in products of G+P- and G patients. Paired samples of G+P patients and prior insufficient G mobilization were available for analyses.

Roug, Anne Stidsholt; Hokland, Lea Bjerre

2014-01-01

452

Mobile Thread Task Manager  

Science.gov (United States)

The Mobile Thread Task Manager (MTTM) is being applied to parallelizing existing flight software to understand the benefits and to develop new techniques and architectural concepts for adapting software to multicore architectures. It allocates and load-balances tasks for a group of threads that migrate across processors to improve cache performance. In order to balance-load across threads, the MTTM augments a basic map-reduce strategy to draw jobs from a global queue. In a multicore processor, memory may be "homed" to the cache of a specific processor and must be accessed from that processor. The MTTB architecture wraps access to data with thread management to move threads to the home processor for that data so that the computation follows the data in an attempt to avoid L2 cache misses. Cache homing is also handled by a memory manager that translates identifiers to processor IDs where the data will be homed (according to rules defined by the user). The user can also specify the number of threads and processors separately, which is important for tuning performance for different patterns of computation and memory access. MTTM efficiently processes tasks in parallel on a multiprocessor computer. It also provides an interface to make it easier to adapt existing software to a multiprocessor environment.

Clement, Bradley J.; Estlin, Tara A.; Bornstein, Benjamin J.

2013-01-01

453

Mobile Energy Laboratory Procedures  

Energy Technology Data Exchange (ETDEWEB)

Pacific Northwest Laboratory (PNL) has been tasked to plan and implement a framework for measuring and analyzing the efficiency of on-site energy conversion, distribution, and end-use application on federal facilities as part of its overall technical support to the US Department of Energy (DOE) Federal Energy Management Program (FEMP). The Mobile Energy Laboratory (MEL) Procedures establish guidelines for specific activities performed by PNL staff. PNL provided sophisticated energy monitoring, auditing, and analysis equipment for on-site evaluation of energy use efficiency. Specially trained engineers and technicians were provided to conduct tests in a safe and efficient manner with the assistance of host facility staff and contractors. Reports were produced to describe test procedures, results, and suggested courses of action. These reports may be used to justify changes in operating procedures, maintenance efforts, system designs, or energy-using equipment. The MEL capabilities can subsequently be used to assess the results of energy conservation projects. These procedures recognize the need for centralized NM administration, test procedure development, operator training, and technical oversight. This need is evidenced by increasing requests fbr MEL use and the economies available by having trained, full-time MEL operators and near continuous MEL operation. DOE will assign new equipment and upgrade existing equipment as new capabilities are developed. The equipment and trained technicians will be made available to federal agencies that provide funding for the direct costs associated with MEL use.

Armstrong, P.R.; Batishko, C.R.; Dittmer, A.L.; Hadley, D.L.; Stoops, J.L.

1993-09-01

454

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.

455

Advances in Stem Cell Mobilization  

OpenAIRE

Use of granulocyte colony stimulating factor (G-CSF)–mobilized peripheral blood hematopoietic progenitor cells (HPC) has largely replaced bone marrow (BM) as a source of stem cells for both autologous and allogeneic cell transplantation. With G-CSF alone, up to 35% of patients are unable to mobilize sufficient numbers of CD34 cells/kg to ensure successful and consistent multi-lineage engraftment and sustained hematopoietic recovery. To this end, research is ongoing to identify new agents or...

Hopman, Rusudan K.; Dipersio, John F.

2014-01-01

456

Event management for mobile users  

OpenAIRE

This technical report presents the results of the project "Event Management for Mobile Users", a research cooperation between Universität Stuttgart and Microsoft. In Vienna, Microsoft chief executive Bill Gates recently expressed his vision of a seamless interaction of different computing devices, from PC to mobile phone, that proactively support the users wherever they go. Among other things, he said: "For example, if you want to be notified about something that's changing, that's impor...

Bauer, Martin

2004-01-01

457

Personalized Mobile Search Engine (PMSE)  

OpenAIRE

we propose a PMSE (Personalized Mobile Search Engine) that captures the users’ preferences in the form of concepts by mining their click-through data. Due to the importance of location information in mobile search, PMSE classifies these concepts into content concepts and location concepts. Using GPS users’ locations are used to supplement the location concepts in PMSE. The user preferences are organized in an ontology based, multi-facet user profile, which are used to adapt a personalized...

Prathmesh Sanjay Powar; Patil, Yogesh N.; Parshuram Nandu Shingote

2014-01-01

458

Trustworthy execution on mobile devices  

CERN Document Server

This brief considers the various stakeholders in today's mobile device ecosystem, and analyzes why widely-deployed hardware security primitives on mobile device platforms are inaccessible to application developers and end-users. Existing proposals are also evaluated for leveraging such primitives, and proves that they can indeed strengthen the security properties available to applications and users, without reducing the properties currently enjoyed by OEMs and network carriers. Finally, this brief makes recommendations for future research that may yield practical and deployable results.

Vasudevan, Amit; Newsome, James

2013-01-01

459

Environment insensitive mobile terminal antennas  

OpenAIRE

The main emphasis of this licentiate thesis is in investigating and developing novel mobile terminal antennas having optimal performance in different operating environments. The mobile terminal antenna should work efficiently regardless whether the user is in the vicinity of the antenna or not. In addition, the electromagnetic radiation absorbed by the user should be as small as possible. First, the effect of the user's hand on the antenna performance is studied, and a novel antenna shield...

Ilvonen, Janne

2012-01-01

460

Pulls of international student mobility  

OpenAIRE

Economic theory suggests that high-skilled immigration generally has positive effects on the receiving economy. International student mobility is an important channel through which high-skilled immigrants arrive. The purpose of this paper is to identify some of the key determinants of international student mobility among higher education policies. For this purpose we review the existing evidence and compile a longitudinal dataset covering inflows of international students into a number of adv...

Kahanec, Martin; Kra?likova?, Rena?ta

2011-01-01

461

Mobile Localization Based on Clustering  

OpenAIRE

This work presents a mobile location management technique based on the clustering. This technique can be implemented on next generation mobile networks by exploiting the data available on the users (age, function, address, workplace… etc), existing infrastructure (roads, location of base stations… etc) and the users' displacements history.The simulations are carried out using a realistic model of movements. The results show that our strategy requires a minimum number of location messages ...

Belkadi, Malika; Aoudjit, Rachida; Daoui, Mehammed; Lalam, Mustapha

2013-01-01

462

Bendix Mobility Test Article (MTA)  

Science.gov (United States)

A concept of a possible Lunar Roving Vehicle (LRV) built by the Bendix Corporation for NASA's Marshall Space Flight Center (MSFC). This Mobility Test Article (MTA) is being inspected by a Bendix technician. The data provided by the MTA helped in designing the LRV, developed under the direction of MSFC. The LRV was designed to allow Apollo astronauts a greater range of mobility during lunar exploration missions.

1965-01-01

463

Grumman Mobility Test Article (MTA)  

Science.gov (United States)

This Mobility Test Article (MTA) was a concept of a possible dual mode Lunar Roving Vehicle (LRV) built by the Grumman Industries for NASA's Marshall Space Flight Center (MSFC). The data provided by the MTA helped in designing the Lunar Roving Vehicle (LRV), developed under the direction of MSFC. The LRV was designed to allow Apollo astronauts a greater range of mobility during lunar exploration missions.

1965-01-01

464

Spatial mobility and social outcomes:  

OpenAIRE

This paper examines the nature and extent of socio-spatial mobility in Great Britain. In contrast with previous studies, we investigate the entire spectrum of moves within and across the hierarchical structure of neighbourhoods. We use data from the British Household Panel Survey to trace moves between neighbourhoods defined using the Indices of Multiple Deprivation. We define upward socio-spatial mobility as moving to neighbourhoods with greater levels of advantage (lower levels of deprivati...

Clark, W. A. V.; Ham, M.; Coulter, R.

2013-01-01

465

British mobile satellite earth stations  

Science.gov (United States)

British military and civil earth stations for mobile satellite services are discussed. Special attention is given to an SHF-band terminal for application to medium-to-large military aircaft in maritime, tanker, transport, and communications roles. Commercial mobile earth stations considered include shipborne terminals, a suitcase version of the Inmarsat Standard A terminal, an L-band Land Rover terminal, and aircraft metrological terminals.

Painter, M. J.; Cummings, D.

466

Factor mobility and international trade  

OpenAIRE

This paper develops a two-country model of trade and factor mobility, in which capital is sector-specific but internationally mobile. The model avoids the indeterminacy and propensity to specialize of Heckscher-Ohlin models and exhibits a rich variety of responses to exogenous shocks, including transfers, capital taxes, and tariffs. The results throw light on the relationship between goods and factor trade, reconciling the conflicting views of previous writers. It is argued that the model hol...

Neary, J. Peter

1994-01-01

467

Comparing Architectures of Mobile Applications  

OpenAIRE

This article describes various advantages and disadvantages of SMS, WAP, J2ME and Windows CE technologies in designing mobile applications. In defining the architecture of any software application it is important to get the best trade-off between platform's possibilities and design requirements. Achieving optimum software design is even more important with mobile applications where all computer resources are limited. Therefore, it is important to have a comparative analysis ...

Fertalj, Kresimir; Horvat, Marko

2007-01-01

468

MOBILE GOVERNMENT: AN EMERGING DIRECTION  

OpenAIRE

The new developments in ICT along with the growth of mobile co