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Sample records for mobile direct-reading sampling

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

    Evans, Douglas E.; Ku, Bon Ki; BIRCH, M. EILEEN; Dunn, Kevin H.

    2010-01-01

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

  2. Direct reading dosimeter

    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

  3. Direct reading spectrochemical analysis of nuclear graphite

    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

  4. Direct-reading spectrochemical analysis of soils and plant ashes

    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. Analytical laboratory and mobile sampling platform

    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

  6. Analytical laboratory and mobile sampling platform

    Stetzenbach, K.; Smiecinski, A.

    1996-04-30

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

  7. Direct-reading dial for noise temperature and noise resistance

    Diamond, J.M.

    1967-01-01

    An attenuator arrangement for a noise generator is described. The scheme permits direct reading of both noise resistance and noise temperature¿the latter with a choice of source resistance.......An attenuator arrangement for a noise generator is described. The scheme permits direct reading of both noise resistance and noise temperature¿the latter with a choice of source resistance....

  8. Measuring electron drift mobility and its lifetime in tetramethylsilicon samples

    The results obtained on measuring electron drift mobility and its lifetime in tetramethylsilicon (TMS) samples produced with fine purification facility are described. Electron drift mobility in TMS was 43 cm2/Vxs and the lifetime constant was ? = 6 ?s. The results obtained for the drift mobility allow one to use these TMS samples in the construction of the calorimetric detectors. 5 refs.; 2 figs

  9. Direct reading spectrochemical analysis of sodium uranate

    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

  10. A Refined Experience Sampling Method to Capture Mobile User Experience

    Cherubini, Mauro; Oliver, Nuria

    2009-01-01

    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

  11. Radiological Design Review Screening Mobile Variable Depth Sampling System

    This document provides the calculated basis for the level of radiological design review required for the proposed Mobile, Variable-Depth Sampling System (MVDSS). This analysis includes the sample station portion of the MVDSS and the associated hose management and sampler positioning system. This analysis does not include the riser interface and the mast deployment system since these two components are internal to the sampled tank

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

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

    1964-07-01

    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.

  13. Direct-reading dosimeters for space life science experiments

    Thomson, I.; Mackay, G.

    Future space missions will require more detailed knowledge of radiation effects on electronics and humans. The longer the flight duration, the greater the potential hazard, as is shown in an overview of space radiation issues. Space radiation is very different from radiation of concern in terrestrial applications; not only is the physical nature of the radiation different, but its temporal and spatial variations add another dimension of complexity. It is very important to be able to measure space radiation with real time electronic devices which are small and can measure the different types of space radiation and warn of dangerously high levels. New, direct-reading electronic radiation monitoring techniques are described along with their application to dosimetry in space. It is shown that miniature silicon sensors can be used for the separate measurement of trapped high-energy protons and electrons, and cosmic rays. Two examples are used to illustrate the potential of these new technologies in life sciences and electronics applications.

  14. Mobility, bioavailability, and toxic effects of cadmium in soil samples

    Total concentration is not a reliable indicator of metal mobility or bioavailability in soils. The physicochemical form determines the behavior of metals in soils and hence the toxicity toward terrestrial biota. The main objectives of this study were the application and comparison of three approaches for the evaluation of cadmium behavior in soil samples. The mobility and bioavailability of cadmium in five selected soil samples were evaluated using equilibrium speciation (Windermere humic aqueous mode (WHAM)), extraction procedures (Milli-Q water, DMSO, and DTPA), and a number of bioassays (Microtox, growth inhibition test, contact toxicity test, and respiration). The mobility, represented by the water-extractable fraction corresponded well with the amount of cadmium in the soil solution, calculate using the WHAM (r2=0.96, P<0.001). The results of the ecotoxicologica evaluation, which represent the bioavailable fraction of cadmium, correlated well with DTPA extractability and also with the concentration of free cadmium ion, which is recognized as the most bioavailable metal form. The results of the WHAM as well as the results of extraction experiments showed a strong binding of cadmium to organic matter and a weak sorption of cadmium to clay minerals

  15. A direct reading exposure monitor for radiation processing

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

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

    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

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

    Mike Stears

    2010-07-01

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

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

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

    2008-09-05

    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.

  19. Minimum Arc Threshold Voltage Experiments on Extravehicular Mobility Unit Samples

    Schneider, Todd; Hansen, Harold; Caruth, M. Ralph, Jr.

    2002-01-01

    The International Space Station (ISS) is now under construction in Low Earth Orbit (LEO). The process of building the ISS requires that astronauts carry out many Extravehicular Activities. To protect the astronauts form the hazardous space environment, they are required to wear a suit known as the Extravehicular Mobility Unit (EMU). For most Extra-Vehicular Activities (EVAs) the EMU is tethered to ISS via a steel safety tether. During the course of an EVA it is common for the safety tether to contact exposed metal on both the ISS and the EMU. In this case, the single point ground of the EMU would be at the same potential as the ISS with respect to the LEO Plasma. In the event that the metal structure of the ISS begins to charge negative of the plasma potential as a result of electron collection by the ISS photovoltaic arrays, then the EMU would also be driven to a negative potential. Anodized aluminum components on the EMU would then begin to develop a charge across their amortization layer as ions from the plasma are collected. In the case where large negative potentials are applied to the EMU, dielectric breakdown may occur as a large voltage difference is developed across the thin amortization layer (oxide). The resulting arc plasma may in turn couple to the charge accumulated on the nearby ISS anodized debris shields and thereby generate a large current flow through the metal EMU structure. Current flow through the EMU could result in an electrocution hazard for the Crew Member inside the EMU - and therefore represents an important safety concern. To address this concern, a series of experiments have been undertaken. In each experiment specially prepared anodized aluminum samples were placed in a LEO representative plasma and charged until dielectric breakdown occurred in the form of an arc. This process was repeated a number of times for three sets of samples. During each test the arc voltage and current were monitored. A statistical treatment of the arc voltage threshold will be presented. In addition, safe operating voltages for the EMU are suggested.

  20. Industrial Component-based Sample Mobile Robot System

    Péter Kucsera

    2007-12-01

    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.

  1. Direct Reading Particle Counters: Calibration Verification and Multiple Instrument Agreement via Bump Testing.

    Jankovic, John; Zontek, Tracy L; Ogle, Burton R; Hollenbeck, Scott

    2015-01-01

    The calibration records of two direct reading instruments designated as condensation particle counters were examined to determine the number of times they were found to be out of tolerance at annual manufacturer's recalibration. Both instruments were found to be out of tolerance more times than within tolerance. And, it was concluded that annual calibration alone was insufficient to provide operational confidence in an instrument's response. Therefore, a method based on subsequent agreement with data gathered from a newly calibrated instrument was developed to confirm operational readiness between annual calibrations, hereafter referred to as bump testing. The method consists of measuring source particles produced by a gas grille spark igniter in a gallon-size jar. Sampling from this chamber with a newly calibrated instrument to determine the calibrated response over the particle concentration range of interest serves as a reference. Agreement between this reference response and subsequent responses at later dates implies that the instrument is performing as it was at the time of calibration. Side-by-side sampling allows the level of agreement between two or more instruments to be determined. This is useful when simultaneously collected data are compared for differences, i.e., background with process aerosol concentrations. A reference set of data was obtained using the spark igniter. The generation system was found to be reproducible and suitable to form the basis of calibration verification. The bump test is simple enough to be performed periodically throughout the calibration year or prior to field monitoring. PMID:25625686

  2. Direct-reading spectrochemical analysis of magnesium alloys

    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

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

    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.

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

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

  5. Rock Gripper for Sampling, Mobility, Anchoring, and Manipulation

    Parness, Aaron

    2013-01-01

    A new gripper mechanism can be used as an end effector for a long arm that reaches out from a nearby spacecraft for a touch-and-go type of mission. The gripper would stabilize the arm and allow samples to be collected and in situ science to be done from a fixed platform. In the long term, this style of gripper could even be used as handholds for astronauts trying to move about on/near small asteroids. The prototype developed has demonstrated a 120 N gripping force, and improvements continue to be made.

  6. Adaptive Sampling for Learning Gaussian Processes Using Mobile Sensor Networks

    Yunfei Xu

    2011-03-01

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

  7. Safety Risk of Mobile Phone Use while Driving in Sample of Taxi Drivers

    Dar?n, Murat; Alkan, Murat

    2015-01-01

    Previous research has shown that mobile phone use while driving increases the risk of being involved in an accident. This paper investigates the reported frequency of taxi drivers' mobile phone use and its effects on traffic safety. A representative sample of taxi drivers was included in an interview-based survey by trained interviewers. It was found that 81% of the taxi drivers reported talking by using hand-held phone while driving. There is a relationship between the phoning while driving ...

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

    Huang, Chengcheng

    2012-01-01

    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...

  9. Volatile/mobile trace elements in meteoritic, non-lunar basalts: Guides to Martian sample contents

    Lipschutz, M. E.; Paul, R. L.

    1988-01-01

    A variety of genetic processes on or in extraterrestrial objects can be examined by study of volatile/mobile trace elements. Doubtless, considerable efforts will be expended on determining these elements in returned Martian samples. The purpose is to estimate levels of such elements expected to be present in returned Martian samples. Some ideas about Martian genesis were already advanced from the volatile/mobile element contents in SNC meteorites, assuming that Mars was their parent body. Even is Mars and the SNC meteorite parent body are identical, compositional ranges for returned Martian samples should exceed those of SNC meteorites. It is expected, therefore, that Martian samples returned from locations other than Polar regions will have indigenous volatile/mobile element contents within howardite-diogenite ranges. Elements with strong lithophile tendences may be more abundant, as they are in many lunar samples. Most of these elements should be at ppb levels except for Co, Ga, Zn, and Rb, which should lie at ppm levels. If Martian volcanism was accompanied by fumarolic emanations, it should be reflected in occasional huge enrichments of mobile trance elements, as in lunar meteorite Y 791197. During collection and transport Earthward, samples must be contained under conditions appropriate to ppb concentrations. Materials must be used that will not cause contamination which occurred during the Apollo program, where indium from seals contaminated many samples.

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

    Mohammad Mehdi Yazdani; Mojtaba Mohammadi

    2015-01-01

    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. T...

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

    Mohammad Mehdi Yazdani

    2015-05-01

    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

  12. Sampled-data Control of Two-wheeled Nonholonomic Mobile Robot Systems

    Yamada, Manabu; Ichikawa, Yasutaka; Funahashi, Yasuyuki

    This paper considers the problem of controlling both the position and the angle of two-wheeled nonholonomic mobile robot systems by sampled-data control. The two-wheeled nonholonomic mobile robot system is discretized directly by a zero order hold and a sampler without transformation such as a chained form, and a new discrete-time state feedback controller is presented for global exponential stabilization of the system. A time-varying discrete-time coordinate transformation is utilized to reduce the stabilization problem to a standard pole assignment problem for a controllable linear time-invariant discrete-time system. The design method is simple and straightforward. Moreover, a useful global exponential stabilization problem is solved for a two-wheeled nonholonomic mobile robot system considering the dynamics in sampled-data control system. Some simulation results are performed to validate the effectiveness of the proposed controllers.

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

    Li Shu; Jia Jian; Gao Xiaoguang; He Xiuli [State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190 (China); Li Jianping, E-mail: jpli@mail.ie.ac.cn [State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190 (China)

    2012-03-30

    Highlights: Black-Right-Pointing-Pointer The reduced mobilities of 18 antibiotics are determined. Black-Right-Pointing-Pointer Establishing antibiotic mass-mobility correlation using (12,4) potential model. Black-Right-Pointing-Pointer Multi-component characteristics of antibiotics can be revealed using ESI-IMS. Black-Right-Pointing-Pointer Most mixtures of antibiotics can be analyzed using ESI-IMS. Black-Right-Pointing-Pointer 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{sup -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.

  14. PEMBELAJARAN MEMBACA TERBIMBING DENGAN TEKNIK DIRECTED READING THINKING ACTIVITIES DI SEKOLAH DASAR

    Alif Mudiono

    2012-04-01

    Full Text Available Abstract: Teaching Guided Reading based on Directed Reading Thinking Activities at the Elemen­tary Schools. This  study is aimed at describing the elementary school teachers knowledge about guided reading thinking model by the Directed Reading Thinking Activities, the learning need analysis and the elementary school teacher perception on DRTA technique. The subject of the research is the teachers teaching the reading comprehension in class V in the elementary school. Data collected by using questionnaire, interview, and observation. The descriptive design is done by validating, identifying, classifying data. Data are analyzed by computing the percentage. The result of the study points out that reading comprehension in the elementary school in Blitar can be developed through DRTA model. Yet, the development of the DRTA model is much dependent on the teacher's creativity. Furthermore, this model can be packaged so that it can increase the students' critical power towards the content of the texs. Abstrak: Pembelajaran Membaca Terbimbing dengan Teknik Directed Reading Thinking Activities di Sekolah Dasar. Penelitian ini bertujuan mendeskripsikan (1 persepsi guru tentang perlunya pembe­lajaran membaca terbimbing, (2 kebutuhan pembelajaran, dan (3 persepsi guru tentang model rancangan pembelajaran membaca terbimbing dengan teknik DRTA di SD. Subjek penelitian adalah guru bahasa Indonesia di kelas V SD. Data diambil dengan menggunakan instrumen angket yang dilengkapi pedoman wawancara dan observasi. Data dianalisis dengan rancangan deskriptif melalui pengecekan keabsahan data, pengklasifikasian data, dan analisis data. Hasil penelitian membuktikan bahwa sebagian besar guru menanggapi positif bahwa pembelajaran membaca pemahaman di SD yang semula dilaksanakan secara terpisah dengan aspek keterampilan berbahasa lainnya, dapat dikembangkan dengan model pembelajaran membaca terbimbing dengan teknik DRTA.

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

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

  16. Sediment Sampling for Poly-Aromatic Hydrocarbons (PAHs) in Mobile Bay and Mississippi Sound in 2013 (NODC Accession 0116480)

    National Oceanic and Atmospheric Administration, Department of Commerce — Sediment samples were collected at ten sites within Mobile Bay and Mississippi Sound on January 28, 2013, for PAH analysis. All samples tested were below detection...

  17. Direct-reading spectrochemical analysis of soils and plant ashes; Analisis espectroquimico de lectura directa de suelos y cenizas de plantas

    Roca, M.; Alvarez, F.; Cellini, R. F.; Burriel, F.

    1966-07-01

    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)

  18. Mobilities

    The world is on the move. This is a widespread understanding by many inhabitants of contemporary society across the Globe. But what does it actually mean? During over one decade the ‘mobilities turn’ within the social sciences have provided a new set of insights into the repercussions of mobilities...... to social networks, personal identities, and our relationship to the built environment. The omnipresence of mobilities within everyday life, high politics, technology, and tourism (to mention but a few) all point to a key insight harnessed by the ‘mobilities turn’. Namely that mobilities is much more...... than simple movements of people, goods, and information from A to B. The ‘mobilities turn’ has made it its hallmark to explore the ‘more than’ effects of a world increasingly on the move. This new title in the Routledge Series ‘Critical Concepts in Built Environment’ creates a state...

  19. Field portable mobile phone based fluorescence microscopy for detection of Giardia lamblia cysts in water samples

    Ceylan Koydemir, Hatice; Gorocs, Zoltan; McLeod, Euan; Tseng, Derek; Ozcan, Aydogan

    2015-03-01

    Giardia lamblia is a waterborne parasite that causes an intestinal infection, known as giardiasis, and it is found not only in countries with inadequate sanitation and unsafe water but also streams and lakes of developed countries. Simple, sensitive, and rapid detection of this pathogen is important for monitoring of drinking water. Here we present a cost-effective and field portable mobile-phone based fluorescence microscopy platform designed for automated detection of Giardia lamblia cysts in large volume water samples (i.e., 10 ml) to be used in low-resource field settings. This fluorescence microscope is integrated with a disposable water-sampling cassette, which is based on a flow-through porous polycarbonate membrane and provides a wide surface area for fluorescence imaging and enumeration of the captured Giardia cysts on the membrane. Water sample of interest, containing fluorescently labeled Giardia cysts, is introduced into the absorbent pads that are in contact with the membrane in the cassette by capillary action, which eliminates the need for electrically driven flow for sample processing. Our fluorescence microscope weighs ~170 grams in total and has all the components of a regular microscope, capable of detecting individual fluorescently labeled cysts under light-emitting-diode (LED) based excitation. Including all the sample preparation, labeling and imaging steps, the entire measurement takes less than one hour for a sample volume of 10 ml. This mobile phone based compact and cost-effective fluorescent imaging platform together with its machine learning based cyst counting interface is easy to use and can even work in resource limited and field settings for spatio-temporal monitoring of water quality.

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

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

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

    Hovmøller, M.S.; Munk, L.; Østergård, Hanne

    1995-01-01

    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 ...

  2. Thermoluminescent dosimeter-direct reading dosimeter dose discrepancy: studies on the role of beta radiation fields

    Dosimetry studies pertaining to thermoluminescent dosimeter (TLD) and direct reading dosimeter (DRD) have been performed for photons, beta fields and mixed field of photons and beta particles. In lab conditions, for pure photon radiation fields, the doses estimated using DRD and TLD match within the acceptable limits whereas in the mixed fields of photons and high energy beta particles, it has been found that the DRD doses are always higher than the corresponding whole body doses estimated by the TLD. This is due to the fact that DRD responds to high energy beta particles and the typical response of the DRD to high energy beta particles is observed to be in the range of 15-30%. This may lead to TLD-DRD dose discrepancy at workplaces where the skin doses received by the radiation workers from high energy beta sources in a given monitoring period are significant. The paper also provides a comparison of three different TLD-DRD discrepancy identification criteria available in literature for exposure conditions with a significant dose due to beta radiations. In addition, estimate of threshold beta dose which may lead to discrepancy as per the criteria have been studied. The results reported in this paper would be helpful in understanding the discrepancy arising out of variable response of DRD to beta radiations and will be useful in resolving the discrepancy in such cases. (author)

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

    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

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

    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

  5. Direct reading spectrochemical determination of aluminium, iron and silicon in fluorite; Determinacion espectroquimica de lectura directa de aluminio, hierro y silicio en fluorita

    Roca, M.

    1966-07-01

    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.

  6. Using Directed Reading Thinking Activity Strategies To Teach Students Reading Comprehension Skills in Middle Grades Language Arts.

    DeFoe, Marguerite Corbitt

    This practicum was designed to use directed reading thinking activity strategies to teach reading comprehension skills to middle grades language arts students who frequently failed to make passing scores in reading comprehension exercises. The program included three specific strategies. The first strategy was to teach the students higher-order…

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

    Serin, Oguz

    2012-01-01

    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…

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

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

  9. Development of a portable direct reading instrument for the triaxial evaluation of electric and magnetic fields at extremely low frequencies

    Concerned by the growing studies linking low frequency exposure and certain types of cancer and by the lack of a suitable direct reading instrument capable of analyzing specific frequencies, IRSSTQ has developed a portable direct reading microprocessor based instrument capable of measuring triaxially both electric and magnetic fields at any frequency in the 50 to 720 Hz range with a dynamic range of at least 70 db. The sensitivity of the instrument is 0.5 V/m and 10 nT. Accuracy is within ± 5% and the bandwidth at 60 Hz is ± 2 Hz at - 60 db. At 720 Hz it is ± 41 Hz at - 60 db. In addition, the instrument has the capability of producing a printout of selected parameters via an RS-232 fibre optics port. (author)

  10. State of the Art of Language Learning Design Using Mobile Technology: Sample Apps and Some Critical Reflection

    Bárcena, Elena; Read, Timothy; Underwood, Joshua; Obari, Hiroyuki; Cojocnean, Diana; Koyama, Toshiko; Pareja-Lora, Antonio; Calle, Cristina; Pomposo, Lourdes; Talaván, Noa; Ávila-Cabrera, José; Ibañez, Ana; Vermeulen, Anna; Jordano, María; Arús-Hita, Jorge; Rodríguez, Pilar; Castrillo, María Dolores; Kétyi, Andras; Selwood, Jaime; Gaved, Mark; Kukulska-Hulme, Agnes

    2015-01-01

    In this paper, experiences from different research groups illustrate the state-of-the-art of Mobile Assisted Language Learning (henceforth, MALL) in formal and non-formal education. These research samples represent recent and on-going progress made in the field of MALL at an international level and offer encouragement for practitioners who are…

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

    Hooker, Stanford B.

    2014-01-01

    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.

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

    Wu, Guanghong; Wei, Zheng; Su, Ruixian

    2011-09-01

    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 urban area were found to have very high Hg concentrations, which were significantly related to Hg emissions from coal-fired utility boilers. In the Yuqiao Reservoir, the surface sediments have to be considered as unpolluted with Hg (mean I(geo) = -0.05 < 0) and the Haihe River Estuary sediments have to be considered as unpolluted to moderately polluted with Hg (0 < mean I(geo) = 0.18 < 1). Sediment-bound Hg in the Yuqiao Reservoir and the Haihe 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

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

    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 ''blown-off'' the particles during collection

  14. Direct Reading of Bona Fide Barcode Assays for Diagnostics with Smartphone Apps

    Wong, Jessica X. H.; Li, Xiaochun; Liu, Frank S. F.; Yu, Hua-Zhong

    2015-06-01

    The desire to develop new point-of-care (POC) diagnostic tools has led to the adaptation of smartphones to tackle limitations in state-of-the-art instrumentation and centralized laboratory facilities. Today’s smartphones possess the computer-like ability to image and process data using mobile apps; barcode scanners are one such type of apps. We demonstrate herein that a diagnostic assay can be performed by patterning immunoassay strips in a bona fide barcode format such that after target binding and signal enhancement, the linear barcode can be read directly with a standard smartphone app. Quantitative analysis can then be performed based on the grayscale intensities with a customized mobile app. This novel diagnostic concept has been validated for a real-world application, i.e., the detection of human chorionic gonadotropin, a pregnancy hormone. With the possibility of multiplex detection, the barcode assay protocol promises to boost POC diagnosis research by the direct adaptation of mobile devices and apps.

  15. Internet mobility survey sampling biases in measuring frequency of use of transport modes

    Diana, Marco

    2012-01-01

    We develop a quantitative analysis of the biases that arise when measuring trip frequencies for a general population through an online survey instrument. Data from a national official survey in Italy, concerning both mobility behaviors and skills in using computers and internet, have been deployed to assess differences in mobility levels between those that can answer a computer/internet survey and those that cannot. Positive correlations were found between ability in using ICT tools and trip ...

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

    M. Zavala

    2008-04-01

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

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

    M. Zavala

    2009-01-01

    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.

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

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

    2016-04-01

    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

  19. Impact of a Mobile Phone Intervention to Reduce Sedentary Behavior in a Community Sample of Adults: A Quasi-Experimental Evaluation

    Kendzor, Darla E.; Shuval, Kerem; Gabriel, Kelley Pettee; Businelle, Michael S; Ma, Ping; High, Robin R.; Cuate, Erica L; Poonawalla, Insiya B.; Rios, Debra M; Demark-Wahnefried, Wendy; Swartz, Michael D; WETTER, DAVID W.

    2016-01-01

    Background Greater time spent sedentary is linked with increased risk of breast, colorectal, ovarian, endometrial, and prostate cancers. Given steadily increasing rates of mobile phone ownership, mobile phone interventions may have the potential to broadly influence sedentary behavior across settings. Objective The purpose of this study was to examine the short-term impact of a mobile phone intervention that targeted sedentary time in a diverse community sample. Methods Adults participated in...

  20. Particulates and aerosols characterized in real time for harsh environments using the UMR mobile aerosol sampling system (MASS)

    Hagen, Donald E.; Whitefield, Philip D.; Trueblood, Max B.; Lilenfeld, Harvey V.

    1993-06-01

    Over the past 10 years a compact mobile aerosol sampling and characterization facility has been developed and operated by the Cloud and Aerosol Sciences Laboratory at UMR. In this presentation its measurement capabilities which include: total number density, size distribution and hydration property determination in real time for aerosols/particles greater than 0.007 micron, and operational methodology will be described. Its application in harsh environments will be evidenced with data from recent measurement campaigns where the system was used to (1) sample and characterize particulates from the supersonic reacting flow of a high energy chemical laser, (2) detect the presence of an invisible jet engine exhaust plume minutes after the aircraft had passed and discriminate the recently generated jet engine aerosol from ambient background carbonaceous aerosol, and (3) characterize engine and fuel specific aerosol sampled during jet engine testing.

  1. Direct reading spectrochemical analysis of sodium uranate; Analisis espectroquimico de lectura directa de uranato sodico

    Roca, M.; Capdevila, C.

    1966-07-01

    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.

  2. Experiences with a new direct-reading oxygen saturation photometer using ultrasound for hemolyzing the blood.

    Siggaard-Andersen, O

    1977-01-01

    The new oxygen saturation meter (OSM2, Radiometer A/S, Copenhagen) is fully automatic and measures the oxygen saturation and the hemoglobin concentration of whole blood or packed red cells. Volume requirement 20 mul, time 40 s. The blood is hemolyzed directly in the capillary cuvette by means of ultrasound generated piezo-electrically. The instrument measures the absorbance at wave lengths of 505 nm and 600 nm. Absorbance range 0-3. The results are calculated electronically and appear in digital display. Other applications are (1) determination of the oxygen affinity of the hemoglobin (P50) after equilibrating the blood with a known pO2 or after measuring the pO2 in the blood sample, (2) determination of carboxyhemoglobin after complete reduction of the hemoglobin by means of dithionite, (3) determination of methemoglobin after complete oxygenation of the blood. PMID:834960

  3. A profile of US-Mexico border mobility among a stratified random sample of Hispanics living in the El Paso-Juarez area.

    Lapeyrouse, L M; Morera, O; Heyman, J M C; Amaya, M A; Pingitore, N E; Balcazar, H

    2012-04-01

    Examination of border-specific characteristics such as trans-border mobility and transborder health service illuminates the heterogeneity of border Hispanics and may provide greater insight toward understanding differential health behaviors and status among these populations. In this study, we create a descriptive profile of the concept of trans-border mobility by exploring the relationship between mobility status and a series of demographic, economic and socio-cultural characteristics among mobile and non-mobile Hispanics living in the El Paso-Juarez border region. Using a two-stage stratified random sampling design, bilingual interviewers collected survey data from border residents (n = 1,002). Findings show that significant economic, cultural, and behavioral differences exist between mobile and non-mobile respondents. While non-mobile respondents were found to have higher social economic status than their mobile counterparts, mobility across the border was found to offer less acculturated and poorer Hispanics access to alternative sources of health care and other services. PMID:21336846

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

    Panayirci, Erdal; Poor, H Vincent

    2009-01-01

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

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

    Bau, Sébastien; Witschger, Olivier; Gensdarmes, François; Thomas, Dominique

    2009-05-01

    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 [1]. 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-AeroTrak™ 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.

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

    Marcos César Lima de Mendonça

    2011-06-01

    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.

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

    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

    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.

  8. Interstitial oxygen mobility in superconducting samples of Bi2Sr2CaCu2O8+y

    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

  9. 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

    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

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

    Barr Margo L

    2012-11-01

    Full Text Available Abstract Background In Australia telephone surveys have been the method of choice for ongoing jurisdictional population health surveys. Although it was estimated in 2011 that nearly 20% of the Australian population were mobile-only phone users, the inclusion of mobile phone numbers into these existing landline population health surveys has not occurred. This paper describes the methods used for the inclusion of mobile phone numbers into an existing ongoing landline random digit dialling (RDD health survey in an Australian state, the New South Wales Population Health Survey (NSWPHS. This paper also compares the call outcomes, costs and the representativeness of the resultant sample to that of the previous landline sample. Methods After examining several mobile phone pilot studies conducted in Australia and possible sample designs (screening dual-frame and overlapping dual-frame, mobile phone numbers were included into the NSWPHS using an overlapping dual-frame design. Data collection was consistent, where possible, with the previous years’ landline RDD phone surveys and between frames. Survey operational data for the frames were compared and combined. Demographic information from the interview data for mobile-only phone users, both, and total were compared to the landline frame using χ2 tests. Demographic information for each frame, landline and the mobile-only (equivalent to a screening dual frame design, and the frames combined (with appropriate overlap adjustment were compared to the NSW demographic profile from the 2011 census using χ2 tests. Results In the first quarter of 2012, 3395 interviews were completed with 2171 respondents (63.9% from the landline frame (17.6% landline only and 1224 (36.1% from the mobile frame (25.8% mobile only. Overall combined response, contact and cooperation rates were 33.1%, 65.1% and 72.2% respectively. As expected from previous research, the demographic profile of the mobile-only phone respondents differed most (more that were young, males, Aboriginal and Torres Strait Islanders, overseas born and single compared to the landline frame responders. The profile of respondents from the two frames combined, with overlap adjustment, was most similar to the latest New South Wales (NSW population profile. Conclusions The inclusion of the mobile phone numbers, through an overlapping dual-frame design, did not impact negatively on response rates or data collection, and although costing more the design was still cost-effective because of the additional interviews that were conducted with young people, Aboriginal and Torres Strait Islanders and people who were born overseas resulting in a more representative overall sample.

  11. Mapping Vineyard Leaf Area Using Mobile Terrestrial Laser Scanners: Should Rows be Scanned On-the-Go or Discontinuously Sampled?

    Ignacio del-Moral-Martínez

    2016-01-01

    Full Text Available The leaf area index (LAI is defined as the one-side leaf area per unit ground area, and is probably the most widely used index to characterize grapevine vigor. However, LAI varies spatially within vineyard plots. Mapping and quantifying this variability is very important for improving management decisions and agricultural practices. In this study, a mobile terrestrial laser scanner (MTLS was used to map the LAI of a vineyard, and then to examine how different scanning methods (on-the-go or discontinuous systematic sampling may affect the reliability of the resulting raster maps. The use of the MTLS allows calculating the enveloping vegetative area of the canopy, which is the sum of the leaf wall areas for both sides of the row (excluding gaps and the projected upper area. Obtaining the enveloping areas requires scanning from both sides one meter length section along the row at each systematic sampling point. By converting the enveloping areas into LAI values, a raster map of the latter can be obtained by spatial interpolation (kriging. However, the user can opt for scanning on-the-go in a continuous way and compute 1-m LAI values along the rows, or instead, perform the scanning at discontinuous systematic sampling within the plot. An analysis of correlation between maps indicated that MTLS can be used discontinuously in specific sampling sections separated by up to 15 m along the rows. This capability significantly reduces the amount of data to be acquired at field level, the data storage capacity and the processing power of computers.

  12. Mapping Vineyard Leaf Area Using Mobile Terrestrial Laser Scanners: Should Rows be Scanned On-the-Go or Discontinuously Sampled?

    del-Moral-Martínez, Ignacio; Rosell-Polo, Joan R; Company, Joaquim; Sanz, Ricardo; Escolà, Alexandre; Masip, Joan; Martínez-Casasnovas, José A; Arnó, Jaume

    2016-01-01

    The leaf area index (LAI) is defined as the one-side leaf area per unit ground area, and is probably the most widely used index to characterize grapevine vigor. However, LAI varies spatially within vineyard plots. Mapping and quantifying this variability is very important for improving management decisions and agricultural practices. In this study, a mobile terrestrial laser scanner (MTLS) was used to map the LAI of a vineyard, and then to examine how different scanning methods (on-the-go or discontinuous systematic sampling) may affect the reliability of the resulting raster maps. The use of the MTLS allows calculating the enveloping vegetative area of the canopy, which is the sum of the leaf wall areas for both sides of the row (excluding gaps) and the projected upper area. Obtaining the enveloping areas requires scanning from both sides one meter length section along the row at each systematic sampling point. By converting the enveloping areas into LAI values, a raster map of the latter can be obtained by spatial interpolation (kriging). However, the user can opt for scanning on-the-go in a continuous way and compute 1-m LAI values along the rows, or instead, perform the scanning at discontinuous systematic sampling within the plot. An analysis of correlation between maps indicated that MTLS can be used discontinuously in specific sampling sections separated by up to 15 m along the rows. This capability significantly reduces the amount of data to be acquired at field level, the data storage capacity and the processing power of computers. PMID:26797618

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

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

    2012-12-01

    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.

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

    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

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

    Hickman, William A; Dow, Norris F

    1951-01-01

    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.

  16. Simultaneous Determination of Trigonelline, Caffeine, Chlorogenic Acid and Their Related Compounds in Instant Coffee Samples by HPLC Using an Acidic Mobile Phase Containing Octanesulfonate.

    Arai, Kana; Terashima, Hiroyuki; Aizawa, Sen-ichi; Taga, Atsushi; Yamamoto, Atsushi; Tsutsumiuchi, Kaname; Kodama, Shuji

    2015-01-01

    In order to analyze trigonelline, caffeine, chlorogenic acid, and their related compounds simultaneously, an HPLC method using an InertSustain C18 column and a mobile phase containing octanesulfonate as an ion-pairing reagent under an acidic condition was developed. The optimum mobile phase conditions were determined to be 0.1% phosphoric acid, 4 mM octanesulfonate, and 15% methanol at 35C. Using the proposed method, trigonelline, nicotinic acid, caffeine, theophylline, chlorogenic acid, and caffeic acid in ten instant coffee samples were analyzed. These analytes except for theophylline were detected in all samples. An increase in the caffeine content in instant coffee samples tended to decrease in both trigonelline and chlorogenic acid contents, and the trigonelline content was found to be correlated well with the chlorogenic acid content (R(2) = 0.887). PMID:26256608

  17. Evaluation of drift gas selection in complex sample analyses using a high performance drift tube ion mobility-QTOF mass spectrometer.

    Kurulugama, Ruwan T; Darland, Ed; Kuhlmann, Frank; Stafford, George; Fjeldsted, John

    2015-10-21

    A recently developed uniform-field high resolution ion mobility (IM) quadrupole time of flight (Q-TOF) mass spectrometer is used for evaluating the utility of alternate drift gases for complex sample analyses. This study provides collision cross section comparison for 275 total pesticides including structural isomers in nitrogen, helium, carbon dioxide, nitrous oxide and sulfur hexafluoride drift gases. Furthermore, a set of small molecules and Agilent tune mix compounds were used to study the trends in experimentally derived collision cross section values in argon and the alternate drift gases. Two isomeric trisaccharides, melezitose and raffinose, were used to evaluate the effect of the drift gasses for mobility separation. The hybrid ion mobility Q-TOF mass analyzer used in this study consists of a low pressure uniform field drift tube apparatus coupled to a high resolution Q-TOF mass spectrometer. Conventionally, low pressure ion mobility instruments are operated using helium drift gas to obtain optimal structural information and collision cross-section (CCS) values that compare to theoretical CCS values. The instrument employed in this study uses nitrogen as the standard drift gas but also allows the utility of alternate drift gases for improved structural analysis and selectivity under certain conditions. The use of alternate drift gases with a wide range of polarizabilities allows the evaluation of mobility separation power in terms of induced dipole interactions between the drift gas and the analyte ions. PMID:26178817

  18. Continuous-flow leaching in a rotating coiled column for studies on the mobility of toxic elements in dust samples collected near a metallurgic plant.

    Fedotov, Petr S; Ermolin, Mikhail S; Ivaneev, Alexandr I; Fedyunina, Natalia N; Karandashev, Vasily K; Tatsy, Yury G

    2016-03-01

    Continuous-flow (dynamic) leaching in a rotating coiled column has been applied to studies on the mobility of Zn, Cd, Cu, Pb, Ni, Sb, As, S, and other potentially toxic elements in atmospherically deposited dust samples collected near a large copper smelter (Chelyabinsk region, Russia). Water and simulated "acid rain" (pH 4) were used as eluents. The technique enables not only the fast and efficient leaching of elements but as well time-resolved studies on the mobilization of heavy metals, sulphur, and arsenic in environmentally relevant forms to be made. It is shown that up to 1.5, 4.1, 1.9, 11.1, and 46.1% of Pb, As, Cu, Zn, and S, correspondingly, can be easily mobilized by water. Taking into consideration that the total concentrations of these elements in the samples under investigation are surprisingly high and vary in the range from 2.7 g/kg (for arsenic) to 15.5 g/kg (for sulphur), the environmental impact of the dust may be dramatic. The simulated acid rain results in somewhat higher recoveries of elements, except Cu and Pb. The proposed approach and the data obtained can very useful for the risk assessment related to the mobility of potentially toxic elements and their inclusion in the biogeochemical cycle. PMID:26741541

  19. Top down viewing of the inductively coupled plasma using a dual grating, direct reading spectrograph and an all mirror optical system

    Using an all-mirror optical system, an inductively coupled plasma is viewed top down and the light is directed to a dual grating, direct reading spectrograph. Top down viewing of the plasma, with masking of the image of the argon plasma torus at the spectrograph entrance slit, significantly reduces background signal from the source and permits the use of the depth of field of the optical system to achieve compromise conditions for viewing the plasma. Light from the plasma source is introduced to the optical system by means of a mirror situated directly over the plasma. The system is exhausted in such a way that cool air flowing past the mirror forms a thermal barrier between the mirror and the plasma. Elements such as copper and lead have atomic and ionic lines which tend to exhibit self absorption when viewed top down through the cooler ground state atoms in the plume of the plasma. One of the approaches to this problem is to shear off the plume of the plasma with a jet of air directed across the tip of the plasma. A second approach is to make use of the dual grating, direct reading spectrograph and real-time computer system which easily permits the setting of alternate lines for each element so that self absorption and matrix effects are minimized. The design of the dual-grating, direct-reading spectrograph allows for the mounting of more than 200 13-mm-dia photomultiplier tubes along the focal curves. In an effort to demonstrate the use of fiber optics as a viable technique for the closer placement of exit slits, a red sensitive photomultiplier tube was coupled with a 30-cm fiber-optic ribbon to detect light from the Li 670.784 nm line on the focal curve. It was successful and had the added advantages of absorbing second-order ultraviolet light

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

    Liu Yang

    2014-11-01

    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.

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

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

    2014-01-01

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

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

    Barbero, L; Gzquez, M J; Bolvar, J P; Casas-Ruiz, M; Hierro, A; Baskaran, M; Ketterer, M E

    2014-12-01

    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 Ro 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 1h resulted in very low concentrations of U with (234)U/(238)U activity ratios close to equilibrium and activity concentrations of (210)Poradionuclides 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 tobe6% in average for the solid sample. By contrast, mobility of U-isotopes is higher than that of Po, around 1.2%. PMID:24308958

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

    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 234U/238U activity ratios close to equilibrium and activity concentrations of 210Po < 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 210Po 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 210Po 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%

  4. Bayesian prediction and adaptive sampling algorithms for mobile sensor networks online environmental field reconstruction in space and time

    Xu, Yunfei; Dass, Sarat; Maiti, Tapabrata

    2016-01-01

    This brief introduces a class of problems and models for the prediction of the scalar field of interest from noisy observations collected by mobile sensor networks. It also introduces the problem of optimal coordination of robotic sensors to maximize the prediction quality subject to communication and mobility constraints either in a centralized or distributed manner. To solve such problems, fully Bayesian approaches are adopted, allowing various sources of uncertainties to be integrated into an inferential framework effectively capturing all aspects of variability involved. The fully Bayesian approach also allows the most appropriate values for additional model parameters to be selected automatically by data, and the optimal inference and prediction for the underlying scalar field to be achieved. In particular, spatio-temporal Gaussian process regression is formulated for robotic sensors to fuse multifactorial effects of observations, measurement noise, and prior distributions for obtaining the predictive di...

  5. A rapid and non-invasive method to determine toxic levels of alcohols and γ-hydroxybutyric acid in saliva samples by gas chromatography-differential mobility spectrometry.

    Criado-García, L; Ruszkiewicz, D M; Eiceman, G A; Thomas, C L P

    2016-03-01

    A polydimethylsiloxane oral sampler was used to extract methanol, ethanol, ethylene glycol, 1,3-propandiol and γ-hydroxybutyric acid from samples of human saliva obtained using a passive drool approach. The extracted compounds were recovered by thermal desorption, isolated by gas chromatography and detected with differential mobility spectrometry, operating with a programmed dispersion field. Complex signal behaviours were also observed that were consistent with hitherto unobserved fragmentation behaviours in differential mobility spectrometry. These yielded high-mobility fragments obscured within the envelope of the water-based reactant ion peak. Further, compensation field maxima shifts were also observed which were attributable to transport gas modification phenomena. Nevertheless, the responses obtained indicated that in vivo saliva sampling with thermal desorption gas chromatography may be used to provide a semi-quantitative diagnostic screen over the toxicity threshold concentration ranges of 100 mg dm(-3) to 3 g dm(-3). A candidate method suitable for use in low resource settings for the non-invasive screening of patients intoxicated by alcohols and volatile sedatives has been demonstrated. PMID:26744364

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

    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

  7. Membrane set up combined with photoionization-ion mobility spectrometer to improve analytical performance and avoid humidity interference on the determination of aromatics in gaseous samples.

    Criado-Garca, L; Arce, L; Valcrcel, M

    2016-01-29

    UV-ion mobility spectrometry (UV-IMS) is a reliable and inexpensive technique which allows efficient monitoring of BTX (benzene, toluene, m-xylene, o-xylene and p-xylene) in different air samples. Water molecules are unavoidably present in every on-field measurement affecting sensitivity and selectivity of the UV-IMS method. For this reason, the influence of humidity on the mobility spectra when measuring BTX is discussed here. Furthermore, a polydimethyl siloxane (PDMS) membrane assembled on an ad-hoc designed membrane holder coupled to UV-IMS was proposed for online measurement of analytes in humid gaseous samples without sample preparation/pre-treatment steps. The use of this membrane reduces the moisture of the gaseous sample before entering into the IMS, and the consequent distortion of the signal. The limit of detection (LOD) and the limit of quantification (LOQ) achieved with the method proposed were in the range of 0.49-1.21mgL(-1) and 1.63-4.03mgL(-1), respectively for all analytes. The precision of the method was evaluated in terms of repeatability and reproducibility obtaining values lower than 1.1% for drift time and 12.0% for peak height when the membrane was used coupled to the UV-IMS for all target analytes in the humidity range of 10-75% RH. Thus, BTX can be determined directly and quantified unequivocally with the membrane system in ambient air even at humid condition. PMID:26792452

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

    Roca Adell, M.

    1964-07-01

    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.

  9. Aqueous sulfuric acid as the mobile phase in cation ion chromatography for determination of histamine, putrescine, and cadaverine in fish samples.

    Liao, Benjamin S; Sram, Jackie; Cain, Teresa T; Halcrow, Kenneth R

    2011-01-01

    Aqueous sulfuric acid can be used as the mobile phase in cation ion chromatography to separate the three biogenic amines, putrescine, cadaverine, and histamine, from fish. Various concentrations of aqueous sulfuric acid were investigated to optimize the separation of these three biogenic amines. Aqueous sulfuric acid (5.0 mM) was found to be optimum for the separation and was used to determine the three biogenic amines in fish. The LOQ, defined as the lowest level of the standard calibration curve, was 0.055 ppm (equivalent to 0.55 microg/g sample) for putrescine, 0.05 ppm (equivalent to 0.5 microg/g sample) for cadaverine, and 1.0 ppm (equivalent to 10 microg/g sample) for histamine. From statistical analysis of the LOQ, the method detection limit was 0.003 ppm for putrescine, 0.009 ppm for cadaverine, and 0.16 ppm for histamine. For sample preparation, the fish was composited, homogenized in methanol-water (75 + 25, v/v), incubated for 15 min at 60 degrees C, and centrifuged. The sample solution was micron-filtered before injection. The mobile phase flow rate was 0.8 mL/min under isocratic conditions at room temperature (15-25 degrees C). The three biogenic amines were separated in the order of increasing retention time, i.e., putrescine, cadaverine, and histamine, within 30 min. The chromatograms showed complete peak separation of the three amines regardless of the difference in fish matrixes. PMID:21563692

  10. Staging Mobilities / Designing Mobilities

    Jensen, Ole B.

    2015-01-01

    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...... areas of social and cultural importance. Taken together the two volumes form a dissertation that both makes a theoretical and empirical contribution to the ‘mobilities turn’, as well as an innovative approach to bridging design research and mobilities research by articulating a new research field of...

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

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

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

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

    2012-12-01

    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.

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

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

    2012-01-01

    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)...

  14. Highly sensitive tITP-CZE determination of l-histidine and creatinine in human blood plasma using field-amplified sample injection with mobility-boost effect.

    Hattori, Takanari; Fukushi, Keiichi

    2016-01-01

    2D computer simulation revealed that amino acids and weak electrolytes were cationized because of the migration of counter-ion from a BGE zone to a sample zone, which encouraged electrokinetic injection (EKI) of these analytes (by the mobility-boost (MB) effect). To investigate the effects of kinds and concentrations of counter-ions on the MB effect and the analyte amount injected into the capillary, experiments, and 1D computer simulations were performed. When acetate was used as the counter-ion, the LODs (S/N = 3) of l-histidine and creatinine, respectively, reached 0.10 and 0.25 nM because of the concentration effect by transient ITP (tITP). The concentrations of l-histidine and creatinine in human blood plasma obtained using the proposed method were agreed with those obtained using the conventional methods. The proposed method can be applied to the analysis of amino acids and weak bases that have similar pI and pKa to l-histidine and creatinine. PMID:26454141

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

    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

  16. Mobile Learning Using Mobile Phones

    Vicente, Paula

    2013-01-01

    The participation in mobile learning programs is conditioned by having/using mobile communication technology. Those who do not have or use such technology cannot participate in mobile learning programs. This study evaluates who are the most likely participants of mobile learning programs by examining the demographic profile and mobile phone usage…

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

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

    2014-01-01

    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 mod...

  18. Mobile Election

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

    2009-01-01

    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...

  19. Mobile units to hydro geochemistry characterization

    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

  20. Mobile Probes in Mobile Learning

    Ørngreen, Rikke; Blomhøj, Ulla; Duvaa, Uffe

    2011-01-01

    In this paper experiences from using mobile probes in educational design of a mobile learning application is presented. The probing process stems from the cultural probe method, and was influenced by qualitative interview and inquiry approaches. In the project, the mobile phone was not only acting as an agent for acquiring empirical data (as the situation in hitherto mobile probe settings) but was also the technological medium for which data should say something about (mobile learning). Conse...

  1. Mobile Workforce, Mobile Technology, Mobile Threats

    Mobile technologies' introduction into the world of safeguards business processes such as inspection creates tremendous opportunity for novel approaches and could result in a number of improvements to such processes. Mobile applications are certainly the wave of the future. The success of the application ecosystems has shown that users want full fidelity, highly-usable, simple purpose applications with simple installation, quick responses and, of course, access to network resources at all times. But the counterpart to opportunity is risk, and the widespread adoption of mobile technologies requires a deep understanding of the threats and vulnerabilities inherent in mobile technologies. Modern mobile devices can be characterized as small computers. As such, the threats against computing infrastructure apply to mobile devices. Meanwhile, the attributes of mobile technology that make it such an obvious benefit over traditional computing platforms all have elements of risk: pervasive, always-on networking; diverse ecosystems; lack of centralized control; constantly shifting technological foundations; intense competition among competitors in the marketplace; the scale of the installation base (from millions to billions); and many more. This paper will explore the diverse and massive environment of mobile, the number of attackers and vast opportunities for compromise. The paper will explain how mobile devices prove valuable targets to both advanced and persistent attackers as well as less-skilled casual hackers. Organized crime, national intelligence agencies, corporate espionage are all part of the landscape. (author)

  2. Mobile learning in medicine

    Serkan Güllüoüǧlu, Sabri

    2013-03-01

    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.

  3. 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).

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

    2014-09-01

    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

  4. Staying Mobile

    ... Text Larger Text Print Mobility and Accessibility Staying Mobile Increasing Accessibility Emotional Adjustment Publication Minimizing Your Risk of Falls: A Guide for People with MS Learn how you can ...

  5. Mobile payment

    Lerner, Thomas

    2013-01-01

    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.

  6. Subversive Mobilities

    Thelle, Mikkel

    2013-01-01

    The article approaches mobility through a cultural history of urban conflict. Using a case of “The Copenhagen Trouble,“ a series of riots in the Danish capital around 1900, a space of subversive mobilities is delineated. These turn-of-the-century riots points to a new pattern of mobile gathering...

  7. Designing Mobilities

    Jensen, Ole B.

    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 ...... of: motorway ecologies, bicycle systems design, urban shopping malls and a train transit hub....

  8. Staging Mobilities

    Jensen, Ole B.

    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...

  9. Mobile Probes in Mobile Learning

    Ørngreen, Rikke; Blomhøj, Ulla; Duvaa, Uffe

    In this paper experiences from using mobile probes in educational design of a mobile learning application is presented. The probing process stems from the cultural probe method, and was influenced by qualitative interview and inquiry approaches. In the project, the mobile phone was not only acting...... as an agent for acquiring empirical data (as the situation in hitherto mobile probe settings) but was also the technological medium for which data should say something about (mobile learning). Consequently, not only the content of the data but also the ways in which data was delivered and handled......, provided a valuable dimension for investigating mobile use. The data was collected at the same time as design activities took place and the collective data was analysed based on user experience goals and cognitive processes from interaction design and mobile learning. The mobile probe increased the...

  10. Mobility Work

    Bardram, Jakob Eyvind; Bossen, Claus

    2005-01-01

    We posit the concept of Mobility Work to describe efforts of moving about people and things as part of accomplishing tasks. Mobility work can be seen as a spatial parallel to the concept of articulation work proposed by the sociologist Anselm Strauss. Articulation work describes efforts of...... coordination necessary in cooperative work, but focuses, we argue, mainly on the temporal aspects of cooperative work. As a supplement, the concept of mobility work focuses on the spatial aspects of cooperative work. Whereas actors seek to diminish the amount of articulation work needed in collaboration by...... constructing Standard Operation Procedures (SOPs), actors minimise mobility work by constructing Standard Operation Configurations (SOCs). We apply the concept of mobility work to the ethnography of hospital work, and argue that mobility arises because of the need to get access to people, places, knowledge and...

  11. Mobile Clouds

    Fitzek, Frank; Katz, Marcos

    networks with social networks, creating a vast fertile ground for novel developments in both research and practical applications Considers research directions, emerging trends and visions This book is an excellent resource for wireless/networking researchers in industry and academia, students and mobile...... examples of mobile clouds applications, based on both existing commercial initiatives as well as proof-of-concept test-beds. Visions and prospects are also discussed, paving the way for further development. As mobile networks and social networks become more and more reliant on each other, the concept of...... and their relationship with Social networks. Key Features: Provides fundamental ideas and promising concepts for exploiting opportunistic cooperation and cognition in wireless and mobile networks Gives clear definitions of mobile clouds from different perspectives Associates mobile and wireless...

  12. Mobile Semiotics - signs and mobilities

    Jensen, Ole B.

    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...

  13. Mobility Divides

    Jensen, Ole B.

    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...

  14. Mobile phone

    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)

  15. Mobile Semiotics

    Jensen, Ole B.

    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 ‘mob...

  16. Born In Bradford Mobile Application

    Lee, Stella; Walda, Martin; Vasiliki, Delimpasi

    2015-01-01

    The Born In Bradford mobile application is an Android mobile application and a working prototype that enables interaction with a sample cohort of the Born in Bradford study. It provides an interface and visualization for several surveys participated in by mothers and their children. This data is stored in the Born In Bradford database. A subset of this data is provided for mothers and children. The mobile application provides a way to engage the mothers and promote their consistency in partic...

  17. Intensive mobilities:

    Vannini, Phillip; Bissell, David; Jensen, Ole B.

    This paper explores the intensities of long distance commuting journeys as a way of exploring how bodily sensibilities are being changed by the mobilities that they undertake. The context of this paper is that many people are travelling further to work than ever before owing to a variety of factors...... which relate to transport, housing and employment. Yet we argue that the experiential dimensions of long distance mobilities have not received the attention that they deserve within geographical research on mobilities. This paper combines ideas from mobilities research and contemporary social theory...... with fieldwork conducted in Canada, Denmark and Australia to develop our understanding of the experiential politics of long distance workers. Rather than focusing on the extensive dimensions of mobilities that are implicated in patterns and trends, our paper turns to the intensive dimensions of this...

  18. Mobility Challenges

    Jensen, Ole B.; Lassen, Claus

    2011-01-01

    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....

  19. Accentual mobility

    Olander, Thomas Kristoffer

    slaviske mobile accentparadigmer i høj grad stemmer overens med hinanden, er det sandsynligt at accentmobiliteten i de to sproggrupper går tilbage til et fælles udgangspunkt. Formålet med afhandlingen er at bestemme den urindoeuropæiske baggrund for de baltoslaviske mobile accentparadigmer. I de to...... paradigmatiske accent i urbaltoslavisk på grundlag af materiale fra de tre baltiske sprog og urslavisk. I kapitel IV foretages af en undersøgelse af den foreslåede accentlov ud fra en sammenligning af de rekonstruerede urindoeuropæiske endelser og de tilsvarende former i de urbaltoslaviske mobile...

  20. Sustainable Mobility

    Kjærulff, Aslak Aamot

    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....

  1. Going Mobile?

    Tallon, Loic; Froes, Isabel Cristina G.

    2011-01-01

    If the future is mobile, how is the museum community developing within that future? What are the challenges museums face within it? In which directions should we be seeking to evolve our collective knowledge share? It was to gain observations on questions such as these that the 2011 Museums & Mob...... & Mobile survey was developed: 660 museum professionals responded. In this paper the authors highlight nine survey observations that they believe are important to the museum community’s increased understanding of and continued progress within mobile interpretation....

  2. Mobilities Design

    Jensen, Ole B.; Lanng, Ditte Bendix; Wind, Simon

    2016-01-01

    In this paper, we identify the nexus between design (architecture, urban design, service design, etc.) and mobilities as a new and emerging research field. In this paper, we apply a “situational mobilities” perspective and take point of departure in the pragmatist question: “What design decisions...... of contemporary sites of mobilities and technology. Furthermore, the paper argues that heightened material sensitivity with an acute focus on situations and the multi-sensorial dimensions of human mobilities is largely under-prioritised within much contemporary city planning and transport planning as...

  3. Heteroduplex mobility assay-guided sequence discovery: elucidation of the small subunit (18S) rDNA sequences of Pfiesteria piscicida and related dinoflagellates from complex algal culture and environmental sample DNA pools.

    Oldach, D W; Delwiche, C F; Jakobsen, K S; Tengs, T; Brown, E G; Kempton, J W; Schaefer, E F; Bowers, H A; Glasgow, H B; Burkholder, J M; Steidinger, K A; Rublee, P A

    2000-04-11

    The newly described heterotrophic estuarine dinoflagellate Pfiesteria piscicida has been linked with fish kills in field and laboratory settings, and with a novel clinical syndrome of impaired cognition and memory disturbance among humans after presumptive toxin exposure. As a result, there is a pressing need to better characterize the organism and these associations. Advances in Pfiesteria research have been hampered, however, by the absence of genomic sequence data. We employed a sequencing strategy directed by heteroduplex mobility assay to detect Pfiesteria piscicida 18S rDNA "signature" sequences in complex pools of DNA and used those data as the basis for determination of the complete P. piscicida 18S rDNA sequence. Specific PCR assays for P. piscicida and other estuarine heterotrophic dinoflagellates were developed, permitting their detection in algal cultures and in estuarine water samples collected during fish kill and fish lesion events. These tools should enhance efforts to characterize these organisms and their ecological relationships. Heteroduplex mobility assay-directed sequence discovery is broadly applicable, and may be adapted for the detection of genomic sequence data of other novel or nonculturable organisms in complex assemblages. PMID:10760297

  4. Sample selection

    ARMOOGUM, J; MADRE, JL

    2003-01-01

    Optimising the sample is very important, especially for long-distance travel diaries, because, although not very person or household undertakes long-distance journeys, those who do generally travel a lot. It seems obvious, then to over-represent this type of people in the sample when the authors want to undertake a survey on long-distance mobility. The issue varies depending on whether they want to estimate the global number of trips or to calibrate an origin-destination (o-d) matrix.

  5. Mobile Platforms and Development Environments

    Helal, Sumi; Li, Wengdong

    2012-01-01

    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

  6. Mobile Lexicography

    Køhler Simonsen, Henrik

    Users are already mobile, but the question is to which extent knowledge-based dictionary apps are designed for the mobile user situation. The objective of this article is to analyse the characteristics of the mobile user situation and to look further into the stationary user situation and the...... mobile user situation. The analysis is based on an empirical survey involving ten medical doctors and a monolingual app designed to support cognitive lexicographic functions, cf. (Tarp 2006:61-64). In test A the doctors looked up five medical terms while sitting down at a desk and in test B the doctors...... looked up the same five medical terms while walking around a hospital bed. The data collected during the two tests include external and internal recordings, think-aloud data and interview data. The data were analysed by means of the information scientific star model, cf. (Simonsen 2011:565), and it was...

  7. Portable computing for taking part of the lab to the sample types of applications. From hand held personal digital assistants to smart phones for mobile spectrometry

    Weagant, Scott; Karanassios, Vassili

    2015-06-01

    The use of portable hand held computing devices for the acquisition of spectrochemical data is briefly discussed using examples from the author's laboratory. Several network topologies are evaluated. At present, one topology that involves a portable computing device for data acquisition and spectrometer control and that has wireless access to the internet at one end and communicates with a smart phone at the other end appears to be better suited for "taking part of the lab to the sample" types of applications. Thus, spectrometric data can be accessed from anywhere in the world.

  8. Bridging Mobilities

    Nyamnjoh, Henrietta Mambo

    2013-01-01

    With a focus on Cameroonian migrants from Pinyin and Mankon who are currently living in Cape Town and the Netherlands, this volume examines the workings of the social fabric of mobile communities. It sheds light on how these communities are crafting lives for themselves in the host country and simultaneously linking up with the home country thanks to advances in Information and Communication Technologies (ICTs) and road and air transport. ICTs and mobilities have complemented social relationa...

  9. Mobile Mechanic

    Stefán Gunnarsson 1976; Karl Jóhann Karlssson 1987

    2013-01-01

    Making repairs in the field has changed little over the decades. We believe that Mobile Mechanic will be a useful and easy-to-use tool, for mechanics and supervisors alike, giving both parties a better overview, organization and cutting their paperwork close to zero. Mobile Mechanic, facilitates the identification of outstanding cases in terms of scope and time, and allows work to be easily planned ahead, cutting out tedious paperwork. Using this tool will lessen mistakes that can occur in...

  10. Irish mobilities

    WICKHAM, JAMES JOHN RUFUS

    2007-01-01

    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 actors make...

  11. Correlation ion mobility spectroscopy

    Pfeifer, Kent B.; Rohde, Steven B.

    2008-08-26

    Correlation ion mobility spectrometry (CIMS) uses gating modulation and correlation signal processing to improve IMS instrument performance. Closely spaced ion peaks can be resolved by adding discriminating codes to the gate and matched filtering for the received ion current signal, thereby improving sensitivity and resolution of an ion mobility spectrometer. CIMS can be used to improve the signal-to-noise ratio even for transient chemical samples. CIMS is especially advantageous for small geometry IMS drift tubes that can otherwise have poor resolution due to their small size.

  12. Direct Reading Instruction and the NYS ELA

    Jones-Carey, Margaret H.

    2013-01-01

    This study analyzed the impact of classroom based reading instruction ("direct instruction") on the standardized test scores of 6th grade students as measured by the New York State English Language Arts assessment (NYS ELA). It was hypothesized that the implementation of direct instruction in reading in grade 6 would improve NYS ELA

  13. Role of natural organic matter on iodine and (239)(,240)Pu distribution and mobility in environmental samples from the northwestern Fukushima Prefecture, Japan.

    Xu, Chen; Zhang, Saijin; Sugiyama, Yuko; Ohte, Nobuhito; Ho, Yi-Fang; Fujitake, Nobuhide; Kaplan, Daniel I; Yeager, Chris M; Schwehr, Kathleen; Santschi, Peter H

    2016-03-01

    In order to assess how environmental factors are affecting the distribution and migration of radioiodine and plutonium that were emitted from the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident, we quantified iodine and (239,240)Pu concentration changes in soil samples with different land uses (urban, paddy, deciduous forest and coniferous forest), as well as iodine speciation in surface water and rainwater. Sampling locations were 53-63 km northwest of the FDNPP within a 75-km radius, in close proximity of each other. A ranking of the land uses by their surface soil ( deciduous forest > urban > paddy, and (239,240)Pu concentrations ranked as deciduous forest > coniferous forest > paddy ≥ urban. Both were quite distinct from that of (134)Cs and (137)Cs: urban > coniferous forest > deciduous forest > paddy, indicating differences in their sources, deposition phases, and biogeochemical behavior in these soil systems. Although stable (127)I might not have fully equilibrated with Fukushima-derived (129)I, it likely still works as a proxy for the long-term fate of (129)I. Surficial soil (127)I content was well correlated to soil organic matter (SOM) content, regardless of land use type, suggesting that SOM might be an important factor affecting iodine biogeochemistry. Other soil chemical properties, such as Eh and pH, had strong correlations to soil (127)I content, but only within a given land use (e.g., within urban soils). Organic carbon (OC) concentrations and Eh were positively, and pH was negatively correlated to (127)I concentrations in surface water and rain samples. It is also noticeable that (127)I in the wet deposition was concentrated in both the deciduous and coniferous forest throughfall and stemfall water, respectively, comparing to the bulk rainwater. Further, both forest throughfall and stemflow water consisted exclusively of organo-iodine, suggesting all inorganic iodine in the original bulk deposition (∼28.6% of total iodine) have been completely converted to organo-iodine. Fukushima-derived (239,240)Pu was detectable at a distance ∼61 km away, NW of FDNPP. However, it is confined to the litter layer, even three years after the FDNPP accident-derived emissions. Plutonium-239,240 activities were significantly correlated with soil OC and nitrogen contents, indicating Pu may be associated with nitrogen-containing SOM, similar to what has been observed at other locations in the United States. Together, these finding suggest that natural organic matter (NOM) plays a key role in affecting the fate and transport of I and Pu and may warrant greater consideration for predicting long-term stewardship of contaminated areas and evaluating various remediation options in Japan. PMID:26773510

  14. Restricted Mobilities

    Nielsen, Mette; Lassen, Claus

    2012-01-01

    Privatisation of public spaces in the contemporary city has increased during the last decades but only few studies have approached this field from a mobility perspective. Therefore the article seeks to rectify this by exploring two Australian examples of private spaces in the city; gated communit......Privatisation of public spaces in the contemporary city has increased during the last decades but only few studies have approached this field from a mobility perspective. Therefore the article seeks to rectify this by exploring two Australian examples of private spaces in the city; gated...... communities and shopping centres through mobility lenses. The article shows how different mobility systems enable and restrict the public access to private-public spaces, and it points out that proprietary communities create an unequal potential for human movement and access in the city. The main argument in...... the article is that the many mobility systems enable specialization of places that are targeted at a special section of the population. This means that various forms of motilities not only create new opportunities for urban life but it is also one of the most critical components of production of new...

  15. Graphene mobility mapping

    Buron, Jonas Christian Due; Pizzocchero, Filippo; Jepsen, Peter Uhd; Petersen, Dirch Hjorth; Caridad, Jose; Jessen, Bjarke Sørensen; Booth, Tim; Bøggild, Peter

    2015-01-01

    Carrier mobility and chemical doping level are essential figures of merit for graphene, and large-scale characterization of these properties and their uniformity is a prerequisite for commercialization of graphene for electronics and electrodes. However, existing mapping techniques cannot directly...... assess these vital parameters in a non-destructive way. By deconvoluting carrier mobility and density from non-contact terahertz spectroscopic measurements of conductance in graphene samples with terahertz-transparent backgates, we are able to present maps of the spatial variation of both quantities over...... graphene indicates dominance by charged scatterers. Unexpectedly, significant variations in mobility rather than doping are the cause of large conductance inhomogeneities, highlighting the importance of statistical approaches when assessing large-area graphene transport properties....

  16. Mobile Applications

    Semerád, David

    2011-01-01

    The mobile app market is one of the fastest growing in the world. The Apple company has become the most valuated company in the world, mainly due to its App Store. Considering the fact, that nearly all the trends from abroad are soon or later adapted in the Czech Republic, there is quite a big potential value for all the projects on mobile apps including the local market specifics. The subject of this thesis is to consider whether such an app could be successful in such an old school environm...

  17. Mobile Usability

    Aryana, Bijan; Clemmensen, Torkil

    2013-01-01

    In this article, a country specific comparative mobile usability study is presented, using Iran and Turkey as the two chosen emerging/emergent nation exemplars of smartphone usage and adoption. In a focus group study, three mobile applications were selected by first-time users of smartphones. In...... personal contacts. The results and analysis establish the existence of country specific issues and concerns, as well as reveal generic usability issues. The article concludes that the source of these issues is most likely due to a combination of certain contextual features endemic to both Iran and Turkey...

  18. Inferring Human Mobility from Sparse Low Accuracy Mobile Sensing Data

    Cuttone, Andrea; Jørgensen, Sune Lehmann; Larsen, Jakob Eg

    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......, 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....... 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...

  19. Designing Mobilities

    Jensen, Ole B.

    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....

  20. Mobil nationalisme

    Koefoed, Lasse Martin

    , varer, mennesker og kapital men derimod en integreret del af disse tendenser. Gennem begrebet mobil nationalisme argumenteres der for en analytisk optik, hvor nationalisme forstås som en proces hvorigennem skiftende relationer og bevægelser mellem forskellige socio-rumlige skalaer som kroppen...

  1. Tempo Mobile

    Gunnar Agnarsson 1992; Árni Fannar Þráinsson 1989; Sindri Sigurjónsson 1989; Theodór Tómas Theodórsson 1986

    2015-01-01

    In these reports we discuss the B.Sc project titled “Tempo Mobile”. The project was conducted at Reykjavík University in the spring 2015 in collaboration with Tempo. In the project we created a mobile application for Tempo based on their Timesheet plug-in in Atlassian JIRA.

  2. Mobile phones and mobile communication

    Ling, Richard; Donner, Jonathan

    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 w....... 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....

  3. Mobile-to-mobile wireless channels

    Zajic, Alenka

    2013-01-01

    Present-day mobile communications systems can be classified as fixed-to-mobile because they allow mobility on only one end (e.g. the mobile phone to a fixed mobile operator's cell tower). In answer to the consumer demand for better coverage and quality of service, emerging mobile-to-mobile (M-to-M) communications systems allow mobile users or vehicles to directly communicate with each other. This practical book provides a detailed introduction to state-of-the-art M-to-M wireless propagation. Moreover, the book offers professionals guidance for rapid implementation of these communications syste

  4. MOBILE DATABASE SECURITY THREATS

    Mapkar Atiqua Yunus

    2015-04-01

    Full Text Available Ubiquitous use of mobile phones has caused an emergence of applications targeted to mobile platforms. Since mobile devices become the major mobile platforms for users to transfer and exchange diverse mobile data over the wireless networks or wireless internet, mobile security for mobile accesses becomes very important and critical to assure secured mobile transactions, mobile data integrity and confidentiality. Mobile security also is critical to protect mobile users and mobile-based application systems from unauthorized accesses and diverse attacks. This paper shows different mobile database security threats that may be occurs for mobile database in the real world and gives possible solution to eliminate them. This paper discusses all the security issues in both mobile database system and mobile network and discusses their solutions.

  5. Hall mobility in multicrystalline silicon

    Schindler, F.; Geilker, J.; Kwapil, W.; Warta, W.; Schubert, M. C.

    2011-08-01

    Knowledge of the carrier mobility in silicon is of utmost importance for photovoltaic applications, as it directly influences the diffusion length and thereby the cell efficiency. Moreover, its value is needed for a correct quantitative evaluation of a variety of lifetime measurements. However, models that describe the carrier mobility in silicon are based on theoretical calculations or fits to experimental data in monocrystalline silicon. Multicrystalline (mc) silicon features crystal defects such as dislocations and grain boundaries, with the latter possibly leading to potential barriers through the trapping of charge carriers and thereby influencing the mobility, as shown, for example, by Maruska et al. [Appl. Phys. Lett. 36, 381 (1980)]. To quantify the mobilities in multicrystalline silicon, we performed Hall measurements in p-type mc-Si samples of various resistivities and different crystal structures and compared the data to majority carrier Hall mobilities in p-type monocrystalline floatzone (FZ) silicon. For lack of a model that provides reliable values of the Hall mobility in silicon, an empirical fit similar to existing models for conductivity mobilities is proposed based on Hall measurements of monocrystalline p-type FZ silicon. By comparing the measured Hall mobilities obtained from mc silicon with the corresponding Hall mobilities in monocrystalline silicon of the same resistivity, we found that the mobility reduction due to the presence of crystal defects in mc-Si ranges between 0% and 5% only. Mobility decreases of up to 30% as reported by Peter et al. [Proceedings of the 23rd European Photovoltaic Solar Energy Conference, Valencia, Spain, 1-5 September 2008], or even of a factor of 2 to 3 as detected by Palais et al. [Mater. Sci. Eng. B 102, 184 (2003)], in multicrystalline silicon were not observed.

  6. Mobile Phones, Financial Inclusion, and Growth

    Mihasonirina Andrianaivo

    2012-05-01

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

  7. Robotique Mobile

    Filliat, David

    2011-01-01

    1 Introduction I Les bases de la navigation 2 Les différents types de navigation 3 Les sources d'information 4 Matériels courants en robotique mobile II Navigation réactive 5 Navigation vers un but 6 Évitement d'obstacles 7 Apprentissage par renforcement III Navigation utilisant une carte 8 Localisation, Cartographie et Planification 9 Les représentations de l'environne 10 Localisation 11 Cartographie 12 Planification

  8. Mobile computing

    Matyska, Ludek; Hladka, Eva

    2001-01-01

    Notebooks are replacing other personal computers in everyday use. Efficient use of such mobile devices requires a creation of an "illusion" of permanent high speed on-line connection. Infrastructure support including middle-ware services is necessary for such environment. E-mail, (distributed) filesystems or computational experiment steering are examples of services which utility is qualitatively increased by such a support. A model of middle-ware support that is based on tunneling and cachin...

  9. The African Mobile Story

    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......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...

  10. Professional Flash Lite Mobile Development

    Anderson, J G

    2010-01-01

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

  11. Mobile Payments : Comparison of Mobile Wallet Concepts

    Narayan, Srikant

    2013-01-01

    Mobile payments are an emerging trend and an alternative to traditional payment methods. Mobile payments involve the usage of the mobile phone to handle credit transfers during purchase of goods and peer to peer money transfers referred to as mobile wallet service, instead of depending on bank cards and cash. In this scenario, while the mobile wallet industry still being in its infancy there exist a few drivers of mobile wallet solutions aiming to create a de-facto standard in the mobile mark...

  12. Mobile Misfortune

    Vigh, Henrik Erdman

    2015-01-01

    part looks at the predicament of youth and the hope of migration in Bissau, the second illuminates the anguish of deportation and the despair of being forcefully ‘displaced back home.’ Following in the footsteps of the young men that seek to navigate the cocaine trade, in order to obtain better lives...... termination of the mobility it enables. This article, thus, looks at the motives and manners in which young men in Bissau become caught up in transnational flows of cocaine. It shows how motion is emotively anchored and affectively bound: tied to and directed toward a feeling of worth and realisation of being...

  13. Classical mobility of highly mobile crystal defects.

    Swinburne, T D; Dudarev, S L; Sutton, A P

    2014-11-21

    Highly mobile crystal defects such as crowdions and prismatic dislocation loops exhibit an anomalous temperature independent mobility unexplained by phonon scattering analysis. Using a projection operator, without recourse to elasticity, we derive analytic expressions for the mobility of highly mobile defects and dislocations which may be efficiently evaluated in molecular dynamics simulation. The theory explains how a temperature-independent mobility arises because defect motion is not an eigenmode of the Hessian, an implicit assumption in all previous treatments. PMID:25479502

  14. Mobility Impact on Performance of Mobile Grids

    A. S. Nandeppanavar,; M. N. Birje,; S. S. Manvi,; Shridhar

    2010-01-01

    Wireless mobile grids are one of the emerging grid types, which help to pool the resources of several willing and cooperative mobile devices to resolve a computationally intensive task. The mobile grids exhibit stronger challenges like mobility management of devices, providing transparent access to grid resources, task management and handling of limited resources so that resources are shared efficiently. Task execution on these devices should not be affected by their mobility. The proposed wo...

  15. Exploring the Mobility of Mobile Phone Users

    Csaji, Balazs Cs.; BROWET, Arnaud; TRAAG, V.A.; Delvenne, Jean-Charles

    2012-01-01

    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 randomly chosen indiv...

  16. Mobile Security with Smartcards

    Kilian-Kehr, Roger

    2002-01-01

    Mobility in conjunction with communication facilities in the form of mobile telephony seems to be one of the major technology trends observed throughout the last decade. Many experts and analysts expect that the arrival of mobile services such as mobile commerce, location-based services, multi-media messaging, and mobile gaming in the third generation of mobile networks will be the next step in this success story. However, protecting service providers from fraud and mobile users from new thre...

  17. 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)

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

    2014-01-01

    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 transf...

  18. Drivers of sustainable future mobility

    Sigurdardottir, Sigrun Birna

    sample consisted of young people divided into four age groups: 15-19 year old, 20-24 year old, 25-29 year old and 30-34 year old. The analysis explores the development of gender gaps for rural and urban living location. The mobility indicators analysed were; driving licence status, travel mode, distance...... is a gender related gap in transport behaviour, the gap progresses across age groups and is different for rural and urban areas. The convergence trends are in line with mainstream trends but there is still a pattern of gendered mobilities observable for the older groups. The findings highlight that......This PhD thesis presents three complementary studies that aimed to enhance knowledge of young people’s longitudinal mobility trends and the factors influencing adolescents’ future mobility intentions. First study was an analysis of Danish national travel survey data (TU) from 1995 to 2012. The...

  19. Understanding Mobile Apps

    ... Español Vea esta página en español Understanding Mobile Apps PDF Version Related Items Tips for Using Public ... App User Reviews Kids and Mobile Apps Mobile App Basics What’s a mobile app? A mobile app ...

  20. Mobile video with mobile IPv6

    Minoli, Daniel

    2012-01-01

    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

  1. Key determinants of students mobile phone choice

    Michael Dzigbordi Dzandu; Henry Boateng; Cynthia Esinu Dzandu

    2014-01-01

    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 the...

  2. CBRN mobile laboratories in Italy

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

    2009-05-01

    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.).

  3. Mobile Inquiry Based Learning

    Specht, Marcus

    2012-01-01

    Specht, M. (2012, 8 November). Mobile Inquiry Based Learning. Presentation given at the Workshop "Mobile inquiry-based learning" at the Mobile Learning Day 2012 at the Fernuniversität Hagen, Hagen, Germany.

  4. Micro Mobility Marketing

    Hosbond, Jens Henrik; Skov, Mikael B.

    2008-01-01

    considerable number of studies on push-based SMS mobile marketing campaigns. This paper explores a related yet different form of mobile marketing namely micro mobility marketing. Micro mobility marketing denotes mobility in the small, meaning that promotion of goods takes place within a circumscribed location......, in our case a medium-sized retail supermarket. Two prototypes based on push and pull marketing strategies are implemented and evaluated. Taking outset in a synthesis of central issues in contemporary research on mobile marketing, we discuss their role in micro mobility marketing to point to......Mobile marketing refers to marketing of services or goods using mobile technology and mobile marketing holds potentially great economical opportunities. Traditionally, mobile marketing has been viewed as mobility in the large taking place virtually anywhere, anytime. Further, research shows...

  5. Mobile OS Comparative Study

    Joseph, Jyothy; K, Shinto Kurian

    2013-01-01

    In the fast growing mobile revolutionary era, many operating systems are playing vital role in present market. This study is intending to identify the apt and secure mobile based on mobile operating systems capability and user requirements.

  6. Capital Mobility in African Countries

    Solo Padawassou

    2012-05-01

    Full Text Available It is well known that one of the important aspects of achieving sustainable development is to preservemacroeconomic stability, which is closely related to the extent of capital mobility. Given the importance of thesubject for open economies, this paper examines the degree of capital mobility for African countries by usingamong other methodologies the Feldstein- Horioka coefficients. To determine those coefficients, we use timeseries data and methods, along with the Dynamic Heterogeneous panel approach. We find significantcross-country heterogeneity in the dynamic of income per capita, investment rate, and saving rate; and concludethat it is invalid to pool data across our sample countries. Furthemore, the empirical findings reveal that forAfrican countries included in the sample, the estimated saving retention coefficients are at the same time, smalland high indicating respectively higher and lower degrees of capital mobility and therefore, challenging theresults of Feldstein – Horioka on developing countries.

  7. Cooperating mobile robots

    Harrington, John J.; Eskridge, Steven E.; Hurtado, John E.; Byrne, Raymond H.

    2004-02-03

    A miniature mobile robot provides a relatively inexpensive mobile robot. A mobile robot for searching an area provides a way for multiple mobile robots in cooperating teams. A robotic system with a team of mobile robots communicating information among each other provides a way to locate a source in cooperation. A mobile robot with a sensor, a communication system, and a processor, provides a way to execute a strategy for searching an area.

  8. Mobile Search and Advertising

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

    2009-01-01

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

  9. Trends in Mobile Marketing

    Chocholová, Petra

    2010-01-01

    The principal aim of this thesis is to assess the state of the mobile marketing as of the first quarter of 2011 and to discuss various scenarios of the future development. This thesis defines the terms "mobile marketing" and "mobile advertising" and identifies the main players in the industry. It explores the main categories of mobile advertising such as mobile messaging, in-content and mobile internet advertising. Later, it analyzes the latest trends in the industry and describes in detail t...

  10. Priority Based Mobile Transaction Scheme Using Mobile Agents

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

    2011-01-01

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

  11. Mobile Informal Learning

    Glahn, Christian; Brner, Dirk

    2010-01-01

    Mobile technologies play an important role in contemporary communication. Starting from mobile telephony, mobile devices are increasingly becoming ubiquitous devices for personal information management and communication through different channels. These new devices shape our perception of information, communication, participation, and learning. Moreover, new and smart mobile technology challenges the current views on education and learning more radically then the worldwide web, because differ...

  12. Mobile Operating Systems

    Vipin Kamboj; Hitesh Gupta

    2012-01-01

    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

  13. Next generation mobile broadcasting

    Gómez-Barquero, David

    2013-01-01

    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

  14. Communication, destination brands and mobile applications

    Fernndez-Cavia, J.; M LPEZ

    2013-01-01

    Tourist communication and destination branding are professional and academic fields that are witnessing expansion. Aside from traditional media, destinations also use official websites, social networks and mobile applications for communication. This article examines a sample of Spanish destination applications along with two comparative samples comprised by international destinations and commercial brands. The results show there is a clear underuse of the resources afforded by mobile appli...

  15. Mobile and contextual learning

    Kukulska-Hulme, Agnes; Sharples, Mike

    2009-01-01

    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...

  16. Mobile Cloud Computing.

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

    2013-01-01

    Despite increasing usage of mobile computing, using its full potential is difficult due to its problems such as resource scarcity, frequent disconnections, and mobility. Mobile cloud computing can address these problems by executing mobile applications on resource providers external to the mobile device. Cloud computing is the latest effort in delivering computing resources as a service. It represents a shift away from computing as a product that is purchased, to computing as a service that i...

  17. Mobile, flexible user interfaces

    2007-01-01

    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 ada...

  18. Mobile platform security

    Asokan, N; Dmitrienko, Alexandra

    2013-01-01

    Recently, mobile security has garnered considerable interest in both the research community and industry due to the popularity of smartphones. The current smartphone platforms are open systems that allow application development, also for malicious parties. To protect the mobile device, its user, and other mobile ecosystem stakeholders such as network operators, application execution is controlled by a platform security architecture. This book explores how such mobile platform security architectures work. We present a generic model for mobile platform security architectures: the model illustrat

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

    Caldeira, J.M.L.P.; Dias, Edgar; Paulo, Bruno; Neves, P.A.C.S.

    2009-01-01

    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...

  20. Mobile Notes: Mobile Devices in Creative Discussions

    Bollen, Lars; Juarez, Guillermo; Hoppe, Ulrich

    2006-01-01

    The trendy notion of "mobile learning" has different connotations: On the one hand, it can be understood as "learning on the move" - often referred to as "learning any time anywhere". Of course this interpretation relies on specific kinds of technological enabling, but the definition aims at the general setting of learning activities. Particularly, it includes informal learning settings (cf. [1]). A second interpretation sees mobile learning somewhat more pragmatically as learning with mobile...

  1. Mobility analysis with mobile phone data

    Rajna, Botond

    2014-01-01

    The thesis evaluates mobility based on mobile phone positions. The aim is to develop and assess different methods for travel demand estimation based on CDR data. Besides this estimation location data in cellular data is explained in more detail and a previous work based on mobile phone data and travel demand estimation is reviewed. The different methods of travel time estimation include both static and dynamic estimation. The static travel demand estimation evaluates movements in the city bas...

  2. Urban Mobility Flows from Mobile Phone Data

    Naboulsi, Diala; Fiore, Marco; Stanica, Razvan

    2014-01-01

    Understanding human movements is critical for different scientific domains. In order to deploy efficient networking solutions, a clear view of human mobility patterns is required. The same applies for urban planning, where the global mobility flows can determine the optimal deployment of infrastructure. Human mobility also plays a major role when analyzing the ways diseases can spread in a population. Significant research efforts have been conducted in this direction, aiming at understanding ...

  3. Abrechnung mobiler Dienste im Mobile-Payment-Referenzmodell

    Pousttchi, Key; Wiedemann, Dietmar Georg

    2005-01-01

    The purpose of the paper is to analyze mobile payments in the mobile commerce scenario. Therefore, we first classify the mobile payment in the mobile commerce scenario by explaining general offer models, charging concepts, and intermediaries. Second, we describe the mobile payment reference model, especially, the mobile payment reference organization model and different mobile payment standard types. Finally, we conclude our findings.

  4. Sampling and Sample Preparation

    Morawicki, Rubn O.

    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.

  5. Reactive mobility by failure

    Zunino, Alejandro

    2003-01-01

    Mobile agent development is mainly supported by Java-based platforms. However, the weak mobility model they use, added to the inherent complexity of building location-aware software, impose strong limitations for developing mobile agents. In this article we present MoviLog, a platform for building Prolog-based mobile agents with a strong mobility model. The major contribution of MoviLog is its Reactive Mobility by Failure (RMF) mechanism. MRF is a mechanism that acts when an agent needs a res...

  6. Mobile Portal Implementation Strategy

    Gao, Ping; Damsgaard, Jan

    Mobile portal plays an important role in mobile commerce market. Current literature focuses on static analysis on the value chain of mobile portals. This article provides a dynamic perspective on mobile portal strategy. Drawing upon network economics, we describe mobile portal implementation as a...... fourphase process. In different phase, a portal provider has various challenges to overcome and adopt diverse strategies, and correspondingly the regulator has different foci. The conceptual framework proposed in this article offers a basis for further analyses on the market dynamics of mobile commerce, and...

  7. Head First Mobile Web

    Gardner, Lyza; Grigsby, Jason

    2011-01-01

    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

  8. Mobile Router Technology Development

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

    2002-01-01

    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.

  9. Exploring the Mobility of Mobile Phone Users

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

    2013-01-01

    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 randomly chosen individuals in a dataset of communications in Portugal. We show that clustering and principal component analysis allow for a significant dimension reduction with limited loss of information. The most important features are related to geographical location. In particular, we observe that most people spend most of their time at only a few locations. With the help of clustering methods, we then robustly identify home and office locations and compare the results with official census data. Finally, we analyze the geographic spread ...

  10. MOBILE COMMERCE APPROACH BASED ON MOBILE AGENT

    Oussama Zerdoumi

    2011-01-01

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

  11. Ion mobility sensor system

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

    2013-01-22

    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.

  12. Mobile Informal Learning

    Glahn, Christian; Börner, Dirk

    2010-01-01

    Glahn, C., & Börner, D. (2009). Mobile Informal Learning. Presented at Mobile Learning in Context Symposium at the Open University of the Netherlands. September, 11, 2009, Heerlen, The Netherlands: Open University of the Netherlands.

  13. Staging interrail mobilities

    Jensen, Martin Trandberg; Gyimóthy, Szilvia; Jensen, Ole B.

    This paper applies the multiscalar ‘staging mobilities’ framework from the emergent subfield of mobilities design to analyse an enduring European rail travel phenomenon, interrail. This discussion extends and contributes to tourism mobilities research. Secondly, the paper enriches previous studies...... reservations. To reach these aims, the research design intertwines multi-sited ethnography, netnography, survey and interviews. The conclusion offers theoretical reflections pertaining to the role of mobilities designs and methodical hybrids in tourism mobilities research....

  14. Fixed mobile convergence handbook

    Ahson, Syed A

    2010-01-01

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

  15. Ion mobility spectrometry

    Eiceman, GA

    2005-01-01

    Key Developments for Faster, More Precise Detection Capabilities Driven by the demand for the rapid and advanced detection of explosives, chemical and biological warfare agents, and narcotics, ion mobility spectrometry (IMS) undergone significant refinements in technology, computational capabilities, and understanding of the principles of gas phase ion chemistry and mobility. Beginning with a thorough discussion of the fundamental theories and physics of ion mobility, Ion Mobility Spectrometry, Second Edition describes the recent advances in instrumentation and newly

  16. Mobile Claims Management

    Oliver Baecker; Lukas Ackermann; Walter Ackermann; Elgar Fleisch

    2010-01-01

    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...

  17. Mobile Learning Applications Audit

    POCATILU, PAUL; Adrian POCOVNICU

    2010-01-01

    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...

  18. Mobile internet protocol analysis

    Brachfeld, Lawrence J.

    1999-01-01

    Mobile Internet Protocol (IP) is a proposed standard that builds on the current Internet Protocol by making the fact that a user is mobile transparent to applications and higher level protocols such as Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). Mobile IP allows mobile computers to send and receive packets addressed with their home network IP address, regardless of the IP address of their current point of attachment on the Internet while maintaining any current conne...

  19. Mobile Business Intelligence

    Verkooij, K.

    2012-01-01

    The new generation of mobile devices such as smartphones and tablets enables employees to get business insights anytime, anywhere. This trend in Business Intelligence (BI) is popularized under the term mobile BI. Various studies indicate a strong increase in the adoption of this technology. However, mobile BI implementations remain unexplored and unsupported by implementation methods. This study aims to fill in this research gap by devising a Mobile BI Implementation (MOBII) framework. A firs...

  20. Mobile wallet payment solution

    Sjökran, Kenneth; Hallberg, Carl-Frederik; Möller, Johan

    2009-01-01

    Practically everyone today own and use a mobile phone, along with numerous credit cards. Paying with cash is getting rarer, and the trend is to pay electronically. Existing mobile payment trials and systems have demonstrated the success of mobile payments. However, they have all been tailored to particular actors and application areas, such as transit tickets or vending machines. This thesis focuses on the design and construction of a generalised mobile payment system able to handle every kin...

  1. PSiS Mobile

    Anacleto, Ricardo; Luz, Nuno; Figueiredo, Lino

    2010-01-01

    In this paper, we present a state of the art on applications of mobile devices to support decision of a tourist running on a trip. We focus on two types of applications, tourism recommendation and tourism guide, making a brief description of the main characteristics of each one of them. We also refer the main problems encountered on the development of applications for mobile devices, and present PSiS (Personalized Sightseeing Tours Recommendation System) Mobile, our proposal to a mobile recom...

  2. Mobile Collocated Interactions

    Lucero, Andrés; Clawson, James; Lyons, Kent; Fischer, Joel; Ashbrook, Daniel; Robinson, Simon

    Mobile devices such as smartphones and tablets were originally conceived and have traditionally been utilized for individual use. Research on mobile collocated interactions has been looking at situations in which collocated users engage in collaborative activities using their mobile devices, thus...... going from personal/individual toward shared/multiuser experiences and interactions. However, computers are getting smaller, more powerful, and closer to our bodies. Therefore, mobile collocated interactions research, which originally looked at smartphones and tablets, will inevitably include ever...

  3. Mobile element-based forensic genomics.

    Ray, David A; Walker, Jerilyn A; Batzer, Mark A

    2007-03-01

    Mobile elements are commonly referred to as selfish repetitive DNA sequences. However, mobile elements represent a unique and underutilized group of molecular markers. Several of their characteristics make them ideally suited for use as tools in forensic genomic applications. These include their nature as essentially homoplasy-free characters, they are identical by descent, the ancestral state of any insertion is known to be the absence of the element, and many mobile element insertions are lineage specific. In this review, we provide an overview of mobile element biology and describe the application of certain mobile elements, especially the SINEs and other retrotransposons, to forensic genomics. These tools include quantitative species-specific DNA detection, analysis of complex biomaterials, and the inference of geographic origin of human DNA samples. PMID:17161440

  4. Mobile Student Information System

    Asif, Muhammad; Krogstie, John

    2011-01-01

    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

  5. Mobile Student Information System

    Asif, Muhammad; Krogstie, John

    2011-01-01

    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…

  6. MOBILE BUSINESS APPROACH BASED ON MOBILE AGENT

    Ahmed Aloui

    2011-01-01

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

  7. Evaluating Mobile Applications for Urban Tourism

    Roberto Peretta

    2014-06-01

    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.

  8. Mobile satellite communications handbook

    Cochetti, Roger

    2014-01-01

    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 communicationsDescribes 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

  9. Mobile Virtual Private Networking

    Pulkkis, Gran; Grahn, Kaj; Mrtens, Mathias; Mattsson, Jonny

    Mobile Virtual Private Networking (VPN) solutions based on the Internet Security Protocol (IPSec), Transport Layer Security/Secure Socket Layer (SSL/TLS), Secure Shell (SSH), 3G/GPRS cellular networks, Mobile IP, and the presently experimental Host Identity Protocol (HIP) are described, compared and evaluated. Mobile VPN solutions based on HIP are recommended for future networking because of superior processing efficiency and network capacity demand features. Mobile VPN implementation issues associated with the IP protocol versions IPv4 and IPv6 are also evaluated. Mobile VPN implementation experiences are presented and discussed.

  10. Mobile intention recognition

    Kiefer, Peter

    2011-01-01

    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

  11. Supersampling and Network Reconstruction of Urban Mobility

    Sagarra, Oleguer; Szell, Michael; Santi, Paolo; Daz-Guilera, Albert; Ratti, Carlo

    2015-01-01

    Understanding human mobility is of vital importance for urban planning, epidemiology, and many other fields that draw policies from the activities of humans in space. Despite the recent availability of large-scale data sets of GPS traces or mobile phone records capturing human mobility, typically only a subsample of the population of interest is represented, giving a possibly incomplete picture of the entire system under study. Methods to reliably extract mobility information from such reduced data and to assess their sampling biases are lacking. To that end, we analyzed a data set of millions of taxi movements in New York City. We first show that, once they are appropriately transformed, mobility patterns are highly stable over long time scales. Based on this observation, we develop a supersampling methodology to reliably extrapolate mobility records from a reduced sample based on an entropy maximization procedure, and we propose a number of network-based metrics to assess the accuracy of the predicted vehicle flows. Our approach provides a well founded way to exploit temporal patterns to save effort in recording mobility data, and opens the possibility to scale up data from limited records when information on the full system is required. PMID:26275237

  12. Enhancing mobile browsing and reading

    Yu, Chen-Hsiang; Miller, Robert C.

    2011-01-01

    Although the web browser has become a standard interface for information access on the Web, the mobile web browser on the smartphone does not hold the same interest to mobile users. A survey with 11 mobile users shows that only 18% of the participants like mobile web browsers, whereas 82% of them like other mobile applications. This research focuses on understanding mobile users' difficulties and proposes innovative ideas to enhance mobile web browsing. This research enhances mobile browsing ...

  13. Automated mobility-classified-aerosol detector

    Russell, Lynn M.; Flagan, Richard C.; Zhang, Shou-Hua

    2001-01-01

    An aerosol detection system for measuring particle number distribution with respect to particle dimension in an aerosol sample. The system includes an alternating dual-bag sampler, a radially classified differential mobility analyzer, and a condensation nucleus counter. Pressure variations in sampling are compensated by feedback control of volumetric flow rates using a plurality of flow control elements.

  14. Mobility Charters and Manifestos

    Jensen, Ole B.

    This paper explore a number of different cases of articulating notions of ‘correct’ mobility behavior and practice by looking into charters, manifestos and codes of mobility regulation. Within such discourses of ‘correct mobility’ more or less subtle expressions of power as well as normative and...... ethical positions on mobility prevail. Such ‘imagined correct mobility behavior’ are drawing on larger issues of societal change that need to be brought out in a critical analysis and discussion reflecting the attempts to control, design and orchestrate mobility patterns. The paper therefore argues within...... 2007, the English ‘Highway Code Booklets’ from the 1930’s, 40’s and 50’s, the ‘City Slow Charter’, the ‘New Urbanism Charter’ as attempts to codify and order mobility and mobile practices....

  15. Engaging with mobile methods

    Jensen, Martin Trandberg

    2014-01-01

    This chapter showcases how mobile methods are more than calibrated techniques awaiting application by tourism researchers, but productive in the enactment of the mobile (Law and Urry, 2004). Drawing upon recent findings deriving from a PhD course on mobility and mobile methods it reveals the...... conceptual ambiguousness of the term ‘mobile methods’. In order to explore this ambiguousness the chapter provides a number of examples deriving from tourism research, to explore how mobile methods are always entangled in ideologies, predispositions, conventions and practice-realities. Accordingly, the...... engagements with methods are acknowledged to be always political and contextual, reminding us to avoid essentialist discussions regarding research methods. Finally, the chapter draws on recent fieldwork to extend developments in mobilities-oriented tourism research, by employing auto-ethnography to call for a...

  16. An Evaluation of Mobile Health Application Tools

    Sama, Preethi R; Eapen, Zubin J; Weinfurt, Kevin P.; Shah, Bimal R; Schulman, Kevin A

    2014-01-01

    Background The rapid growth in the number of mobile health applications could have profound significance in the prevention of disease or in the treatment of patients with chronic disease such as diabetes. Objective The objective of this study was to describe the characteristics of the most common mobile health care applications available in the Apple iTunes marketplace. Methods We undertook a descriptive analysis of a sample of applications in the “health and wellness” category of the Apple i...

  17. Mobile VLE vs. Mobile PLE: How Informal is Mobile Learning?

    Chen, Wen-Pin; Millard, David; Wills, Gary

    2008-01-01

    Mobile Learning Systems are often described as supporting informal learning; as such they are a good fit to the idea of Personal Learning Environments (PLEs), software systems that users choose and tailor to fit their own learning preferences. This paper explores the question of whether existing m-learning research is more in the spirit of PLEs or Virtual Learning Environments (VLEs). To do this we survey the mobile learning systems presented at M-Learn 2007 in order to see if they might be r...

  18. Mobile healthcare informatics.

    Siau, Keng; Shen, Zixing

    2006-06-01

    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

  19. Social mobility and fertility.

    Kasarda, J D; Billy, J O

    1985-01-01

    This review examines 4 possible causal links between social mobility and fertility: 1) fertility affects social mobility; 2) social mobility affects fertility; 3) fertility and social mobility simultaneously affect each other; and 4) social mobility and fertility are unrelated. Due to the lack of systematic theory guiding the research, conceptualizations and measures of social mobility and fertility vary markedly from study to study, leading to inconsistent findings. The review focuses on theoretical perspectives underpinning the research, causal operators proposed to interpret observed associations, and analytical methods used. The selectivity perspective is based on the contention that a family must be small in order to rise on the social scale. This has found little support, however. In fact, studies suggest that children induce slightly higher levels of status achievement and family responsibilities may stimulate the energy and ambition of some so that they achieve more than they would have done without a family. Most studies have concerned the hypothesis that social mobility affects fertility. 4 theoretical perspectives have emerged: status enhancement; relative economic status; social isolation; and stress and disorientation. At any time in a couple's reproductive life cycle the decision or actual experience of either social mobility or fertility may influence the decision or actual experience of the other variable. Mobility-fertility research has defined an individual's or couple's position in terms of income, education, or occupation with occupation used most often as a single index of social class and indexes of social mobility developed by comparing persons' changes in occupational position. A common theme in much of the research literature is that the existence of an effect of social mobility on fertility depends on the societal conditions of a given population. Most studies through the mid-60s used a common measurement method to assess whether a mobility effect existed. This method compared the reproductive behavior of the upwardly and/or downwardly mobile with that of the nonmobile at origin and/or destination. PMID:12313951

  20. Client Mobile Software Design Principles for Mobile Learning Systems

    Qing Tan; Kinshuk Kinshuk

    2009-01-01

    In a client-server mobile learning system, client mobile software must run on the mobile phone to acquire, package, and send students 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 resou...

  1. Embodied Cultures of Mobilities

    Jensen, Ole B.

    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......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...

  2. CERN Mobility Survey

    GS Department

    2011-01-01

    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 ...

  3. Mobile Web Analytics

    Ruchi Gupta

    2013-03-01

    Full Text Available This Paper presents an overview of the Mobile Web analytics, with a focus on providing insight and actionable outcomes from collecting and analyzing Internet data. The amazing and tremendous growth of web site over the Mobile Internet has raised many concerns for organizations to analyze the lifetime value of their customers, and also improve their marketing strategies in the competitive world through the their website. So this has uplifted the need and requirement of Mobile Web Analytics. There are short comings of applying traditional web analytics to mobile web analytics. Mobile Web analytic process converts the collected data to meaningful key performance indicators in order to measure the organizational goals or potential opportunities. Mobile Web analytics in used to improve Web systems, increase customer satisfaction, and target revenue through effective analysis of user interactions with the organization’s Website.

  4. Talk, Mobility and Materialities

    McIlvenny, Paul

    The intersection of the quotidian practices of social interaction, learning and mobility outside of the classroom – for example, the ways in which talk shapes how children learn to be actively mobile – has been little studied until recently. This paper develops a social interactional approach to...... analysing talk and mobile action in what are arguably two quintessentially Nordic mobility practices, namely cycling and skiing. More specifically the focus is on investigating and comparing how a child learns to cycle in a bike-friendly urban infrastructure, and how a child learns to ski cross...... locates similarities and differences in how specific materialities are made salient in interactional practices. For example, caregivers talk about weather and surface conditions as a resource for instructed mobile action. Also, a route, a trajectory or a line of movement in a mobile formation is...

  5. Hole mobility in aluminium implanted silicon

    Galvagno, G.; La Ferla, A.; La Via, F.; Raineri, V.; Gasparotto, A.; Carnera, A.; Rimini, E.

    1997-11-01

    The dependence of the hole mobility on the dopant concentration ranging from 0268-1242/12/11/018/img8 to 0268-1242/12/11/018/img9 was determined at room temperature in Al-implanted Si samples. The trend was obtained by the use of Hall effect and resistivity measurements on the van der Pauw pattern in combination with secondary-ion mass spectrometry and spreading resistance analysis. The mobility data are in a quite good agreement with the Wagner curve for boron in the high Al concentration region while they approach the Thurber boron curves at low concentrations. This result indicates that the neutral and ionized impurity scattering mechanisms are not critically different for Al- and B-doped samples. The mobility - dopant concentration curve can be employed to convert the resistivity profiles obtained by spreading resistance measurements into hole concentration distributions for Al-doped samples.

  6. Mobile Robots for Hospital Logistics

    Özkil, Ali Gürcan

    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...... 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....

  7. Bioinformatics with mobile devices

    Falgueras Cano, Juan

    2014-01-01

    Mobile platforms are continuously growing in popularity and importance in every aspect of everyday life. It is important that Bioinformatics and biomedical applications keep up with this trend. These platforms offer ubiquitous access, and give their users results when they really need them. However, mobile application development has its own unique challenges (i.e. limited screen size, storage, etc.). We have developed a lightweight platform independent mobile application that allows bioinfor...

  8. Mobile Phone Antenna Design

    Saif, Khalid; Alsmadi, Nazem

    2015-01-01

    This thesis focuses on mobile phones antenna design with brief description about the historical development, basic parameters and the types of antennas which are used in mobile phones. Mobile phones antenna design section consists of two proposed PIFA antennas. The first design concerns a single band antenna with resonant frequency at GPS frequency (1.575GHz). The first model is designed with main consideration that is to have the lower possible PIFA single band dimensions with reasonable ret...

  9. Mobile Learning Project Report

    Folley, Susan; Jabbar, Abdul

    2010-01-01

    Mobile learning is not a new concept, learning whilst on the move or away from formal educational settings has been happening a long time with the use of books, journal articles, television, radio etc. However what is new is the vast array of devices now available to access learning and to take advantage of being mobile but still being able to capture information and share, collaborate and upload it to a worldwide audience. Mobile learning (mlearning) is a growing area of pedagogic res...

  10. Domino inspired MOBILE networks

    Núñez, Juan; Avedillo, M. J.; Quintana, J M

    2012-01-01

    MOBILE networks can be operated in a gate-level pipelined fashion allowing high through-output. If MOBILE gates are directly chained, a four-phase clock scheme is required. A single phase scheme has been recently reported that alternates rising and falling edge-triggered MOBILE gates. A novel two-phase interconnection scheme resembling conventional domino pipelines is proposed and validated. It exhibits advantages in terms of speed with respect to both four-phase and single-phase interconnect...

  11. Education and Social Mobility

    Cremer, Helmuth; DE DONDER, Philippe; Pestieau, Pierre

    2009-01-01

    This paper shows that the design of education policy involves a potential conflict between welfare and social mobility. We consider a setting in which social mobility is maximized under the least elitist public education system, whereas welfare maximization calls for the most elitist system. We show that when private education is available, the degree of elitism that maximizes social mobility increases, while the welfare-maximizing degree of elitism decreases. The ranking between the welfare-...

  12. Mobile Web Analytics

    Ruchi Gupta; Kinjal Mehta; Kaushal Bhavsar; Dr. Hiren Joshi

    2013-01-01

    This Paper presents an overview of the Mobile Web analytics, with a focus on providing insight and actionable outcomes from collecting and analyzing Internet data. The amazing and tremendous growth of web site over the Mobile Internet has raised many concerns for organizations to analyze the lifetime value of their customers, and also improve their marketing strategies in the competitive world through the their website. So this has uplifted the need and requirement of Mobile Web Analytics. Th...

  13. Languages for Mobile Agents

    Versteeg, Steve

    2015-01-01

    Mobile agents represent a new model for network computing. Many different languages have been used to implement mobile agents. The characteristics that make a language useful for writing mobile agents are: (1) their support of agent migration, (2) their support for agent-to-agent communication, (3) how they allow agents to interact with local resources, (4) security mechanisms, (5) execution efficiency, (6) language implementation across multiple platforms, and (7) the language's ease of prog...

  14. Spatial and social mobility

    Wrede, Matthias; Borck, Rainald

    2015-01-01

    This paper analyzes the relationship between spatial mobility and social mobility. It develops a two-skill-type spatial equilibrium model of two regions with location preferences where each region consists of an urban area which is home to workplaces and residences and an exclusively residential suburban area. The paper demonstrates that both segregation and regional income inequality are negatively correlated with relative regional social mobility. In the model, segregation is driven by diff...

  15. Anonymous Mobile Payment Solution

    Alhaj Ali Jalila

    2015-01-01

    The evolution and increasing popularity of mobile handheld devices has led to the development of payment applications. The global acceptance of mobile payments is hindered by security and privacy concerns. One of the main problems evoked is the anonymity related with banking transactions. In this paper I propose a new secured architecture for mobile banking. Anonymity and privacy protection are the measures to be enhanced in order to satisfy people’s current needs. The banking platform must p...

  16. Mobile Immersive Music

    Lemordant, Jacques; Guerraz, Agnes

    2007-01-01

    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 ...

  17. Mobility decline in old age

    Rantakokko, Merja; Mänty, Minna Regina; Rantanen, Taina

    2013-01-01

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

  18. Perancangan Dashboard Mobil Pedesaan Multiguna

    Nurul Madinah; I Made Londen Batan

    2013-01-01

    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 mult...

  19. Cooperative Mobile Web Browsing

    Perrucci, GP; Fitzek, FHP; Zhang, Qi; Katz, MD

    2009-01-01

    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......-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...

  20. Mobile Test Capabilities

    Federal Laboratory Consortium — The Electrical Power Mobile Test capabilities are utilized to conduct electrical power quality testing on aircraft and helicopters. This capability allows that the...

  1. Trust in Mobile Commerce

    KOUNELIS Ioannis; LOESCHNER Jan

    2012-01-01

    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.

  2. Understanding pastoral mobility

    Adriansen, Hanne Kirstine

    2008-01-01

    '. According to this, pastoral mobility is a means to balance variability in dryland resources; hence, 'nature' is the point of departure. Another knowledge system is local pastoral knowledge. For the pastoralists, the well-being of their animals is the point of departure and mobility is used to ensure that...... the livestock are in good condition. The paper shows that it is important to distinguish between mobility of pastoralists and of their herd; even though the pastoralists of northern Senegal have become semi-sedentary, their herds are still quite mobile. The pastoralists are willing to move around...

  3. Secure Mobile Identities

    Chandrasekaran, Varun; Amjad, Fareeha; Sharma, Ashlesh; Subramanian, Lakshminarayanan

    2016-01-01

    The unique identities of every mobile user (phone number,IMSI) and device (IMEI) are far from secure and are increasingly vulnerable to a variety of network-level threats. The exceedingly high reliance on the weak SIM authentication layer does not present any notion of end-to-end security for mobile users. We propose the design and implementation of Secure Mobile Identities (SMI), a repetitive key-exchange protocol that uses this weak SIM authentication as a foundation to enable mobile users ...

  4. Mobile systems development

    Pedersen, Ole; Kristiansen, Martin Lund; Kammersgaard, Marc N.; Hosbond, Jens Henrik

    development teams in the mobile software industry. By taking a process view on development of mobile systems we seek to explore the strengths and limitations of eXtreme Programming (XP) in the context of mobile software development. Following an experimental approach a mobile systems development project...... components whenever possible. Test regularly oil real devices, since the difference between emulators and real devices are significant. Take advantage of spikes. Do not use pair programming when spiking, and remember to write unit tests for production code that was initially created during spikes. Monitor...

  5. Test for mobility

    Li Kheng

    2014-06-01

    Full Text Available Mobile application testing is a process by which application software developed for mobile devices is tested, in aspects as functionality, usability and consistency. These applications can be pre-installed or installed from distribution platforms for mobile software. Due mobile devices have witnessed of a phenomenal growth in recent years (a study by Yankee Group predicted to generate $ 4.2 billion in revenue for 2013 through 7000 million downloads of applications the U.S., it is necesary test engineers increasingly specialize. In this article are described the types of applications, the challenges of testing, and its automation.

  6. Best Sale Mobile Application

    Chittugnanamoorthy, Balakumar

    2014-01-01

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

  7. Programming the Mobile Web

    Firtman, Maximiliano

    2010-01-01

    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.

  8. Mobile computing handbook

    Ilyas, Mohammad

    2004-01-01

    INTRODUCTION AND APPLICATIONS OF MOBILE COMPUTING Wearable Computing,A. Smailagic and D.P. Siewiorek Developing Mobile Applications: A Lime Primer,G.P. Picco, A.L. Murphy, and G.-C. Roman Pervasive Application Development: Approaches and Pitfalls,G. Banavar, N. Cohen, and D. Soroker ISAM, Joining Context-Awareness and Mobility to Building Pervasive Applications,I. Augustin, A. Corrêa Yamin, J.L. Victória Barbosa, L. Cavalheiro da Silva, R. Araújo Real, G. Frainer, G.G. Honrich Cavalheiro, and C.F. Resin Geyer Integrating Mobile Wireless Devices into the Computational Grid,T. Phan, L. Huan

  9. Practical mobile forensics

    Bommisetty, Satish; Mahalik, Heather

    2014-01-01

    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

  10. Supersampling and network reconstruction of urban mobility

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

    2015-01-01

    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...

  11. Key determinants of students’ mobile phone choice

    Michael Dzigbordi Dzandu

    2014-08-01

    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.

  12. Mobilizing community energy

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

  13. Predictors of Social Mobilization Speed

    Alstott, Jeff; Velu, Chander

    2013-01-01

    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.

  14. Boat sampling

    This presentation describes essential boat sampling activities: on site boat sampling process optimization and qualification; boat sampling of base material (beltline region); boat sampling of weld material (weld No. 4); problems accompanied with weld crown varieties, RPV shell inner radius tolerance, local corrosion pitting and water clarity. The equipment used for boat sampling is described too. 7 pictures

  15. Mastering Mobile Security

    Panettieri, Joseph C.

    2007-01-01

    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

  16. Mining mobile youth cultures

    BLANKE, Tobias; Greenway, Giles; Cote, Mark; Pybus, Jennifer

    2015-01-01

    In this short paper we discuss our work on co-research devices with a young coder community, which help investigate big social data collected by mobile phones. The development was accompanied by focus groups and interviews on privacy attitudes and aims to explore how youth cultures are tracked in mobile phone data.

  17. Ion mobility spectroscopy

    The physical fundamentals and application of ion mobility spectroscopy both as an independent analytical instrument and in combination with other analytical methods are described. Particular attention is devoted to the functioning of the ion mobility detector and to the formation mechanism of the different ions. (orig.)

  18. Understanding mobile information needs

    Church, Karen; Smyth, Barry

    2008-01-01

    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.

  19. Wireless mobile Internet security

    Rhee, Man Young

    2013-01-01

      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

  20. Mobile Christian - shuttle flight

    2009-01-01

    Erin Whittle, 14, (seated) and Brianna Johnson, 14, look on as Louis Stork, 13, attempts a simulated landing of a space shuttle at StenniSphere. The young people were part of a group from Mobile Christian School in Mobile, Ala., that visited StenniSphere on April 21.

  1. Mobile Learning Anytime, Anywhere

    Hlodan, Oksana

    2010-01-01

    Some educational institutions are taking the leap to mobile learning (m-learning) by giving out free iPods. For example, Abilene Christian University gave iPods or iPhones to freshman students and developed 15 Web applications specifically for the mobile devices. The iPod is not the only ubiquitous m-learning device. Any technology that connects…

  2. Mastering Mobile Security

    Panettieri, Joseph C.

    2007-01-01

    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…

  3. Mobile Informal Learning

    Börner, Dirk; Glahn, Christian; Specht, Marcus

    2009-01-01

    Börner, D., Glahn, C., & Specht, M. (2009). Mobile Informal Learning. Presentation for the Education in the Wild: contextual and location-based mobile learning in action workshop at the STELLAR Alpine Rendez-Vous 2009. November, 30-December, 3, 2009, Garmisch-Partenkirchen, Germany.

  4. Contextualizing mobile IT

    Messeter, Jrn; Brandt, Eva; Halse, Joachim; Johansson, Martin

    across different contexts is becoming increasingly important. In the COMIT project, ethnographic fieldwork has been combined with participatory design engaging users, designers and researchers in order to explore mobile IT use as well as the design of mobile IT concepts. Four seclected scenarios from the...

  5. Mobile-first Bootstrap

    Magno, Alexandre

    2013-01-01

    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.

  6. Robotics vehicle mobility study

    Ansorge, Kurt H.; Pond, James E.

    2000-07-01

    A nine-month study was conducted under the direction of Tank-Automotive Research, Development and Engineering Center (TARDEC) in Warren, MI. to determine the best platform design for inherent all-terrain mobility of an unmanned robotic vehicle in the 15000-2500 lb. range. Reference platforms were the DEMO III 4x4 and the Utah State University 6x6 with omni-directional wheels. The study systematically developed desired top- down design-driving capabilities, operational needs, and mobility concepts supported by extensive analysis using the NATO Reference Mobility Model and literature searches. Maximizing mobility over all terrain and resisting immobilization were emphasized in order to minimize sensor computational burdens while maximizing the probability of timely mission accomplishment. Several wheeled, tracked and hybrid platform concepts were evaluated. Significant improvements in cross- country mobility, obstacle negotiation and self-extraction capability were achieved with hybrid solutions. Final concept development focused on an 8x8 swiveling wheeled platform with band track overlays. Conclusions of the study were: a technology demonstrator platform should be built for mobility validation and NRMM II refinemment; a robotic- vehicle-specific NRMM II mobility scenario should be developed; and sensor solutions for unmanned mobility platforms should be revisited.

  7. Mobile communications design fundamentals

    Lee, William C Y

    2010-01-01

    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.

  8. Mobile Apps for Librarians

    Power, June L.

    2013-01-01

    In an increasing mobile environment, library and reading-related activities often take place on a phone or tablet device. Not only does this mean that library Web sites must keep mobile navigability in mind, but also develop and utilize apps that allow patrons to interact with information and with libraries. While apps do not serve every purpose,…

  9. Mobile Media Photography

    Svabo, Connie; Shanks, Michael

    2013-01-01

    Mobile media photography marks a shift in orientation from the image towards photography as a mode of engagement. This leads is to explore the processes of experience and documentation that mobile media help to constitute. We unfold two aspects of the process of photography: photography as temporal...

  10. Increasing mobile radiography productivity.

    Wong, Edward; Lung, Ngan Tsz; Ng, Kris; Jeor, Patrick

    2013-01-01

    Mobile radiography using computed radiography (CR) cassettes is a common equipment combination with a workflow bottleneck limited by location of CR readers. Advent of direct digital radiography (DDR) mobile x-ray machines removes this limitation by immediate image review and quality control. Through the use of key performance indicators (KPIs), the increase in efficiency can be quantified. PMID:23986937

  11. Security for Mobility

    Nielson, Hanne Riis; Nielson, Flemming; Buchholtz, Mikael

    We show how to use static analysis to provide information about security issues related to mobility. First the syntax and semantics of Mobile Ambients is reviewed and we show how to obtain a so-called 0CFA analysis that can be implemented in polynomial time. Next we consider discretionary access...

  12. Security for Mobility

    Nielson, Hanne Riis; Nielson, Flemming; Buchholtz, Mikael

    2002-01-01

    We show how to use static analysis to provide information about security issues related to mobility. First the syntax and semantics of Mobile Ambients is reviewed and we show how to obtain a so-called 0CFA analysis that can be implemented in polynomial time. Next we consider discretionary access...

  13. Designing for mobile interaction

    Nazzi, Elena

    2009-01-01

    The theme of this PhD project is designing for mobile interaction with devices and services, for the accessing, making, and sharing of information, taking into account the dynamic physical and social settings that embrace this interaction. To narrow down this theme, the whole project focuses on the...... exploitation of social interaction --- in particular among senior citizens --- to enhance and support mobile interaction....

  14. Estimating and Learning the Trajectory of Mobile Phones

    Hosseini Kamal, Mahdad

    2010-01-01

    This project is based on the ongoing data collection campaign by Nokia Re- search Center-Lausanne. We use location data sampled everyday by mobile phones in the campaign to estimate position of the participants. It is with emerging mobile systems that combines different sensors in a mobile phone so, we can merge different information sources to improve our estimations. Positioning is a problem encountered frequently in many applications. GPS is widely used for positioning but its output is no...

  15. Making Everyday Mobility

    Wind, Simon

    repercussions. Moreover, family mobility does not simply happen, rather the successful performance of everyday mobility is a creative process that requires labour, skill and knowledge (Vannini 2012). It is proposed that families cope with everyday life through the on-going making and performance of mobility...... practices. Specific heterogeneous configurations in mobility practices facilitate instrumental movement of family members, but can also engender care, quality time of togetherness, recreational and productive in-betweens, as well as sensorial and emotional experiences through the orchestration of affective...... coping process in the family, it is argued that making and performing mobility practices is to be understood as creating elasticity. Following this, it is elasticity that enables family members to stretch to accommodate the family’s practical, social and emotional conditions as well as adapt to the...

  16. Mobile Learning for All

    Marco Arrigo

    2010-04-01

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

  17. Children's velo-mobility

    Carstensen, Trine Agervig; Nielsen, Thomas Sick; Olafsson, Anton Stahl

    2014-01-01

    Sustainable mobilities play a dominate role in low carbon futures and cycling is an integral element. Children are heirs of transport cultures and crucial for future sustainable mobility. Moreover cycling is important for children’s independent mobility and geographical experience. Dominating...... approaches in transport research, including cycling, understand travel behaviour individualistic and lack to grasp the relational complexities, which are inevitable when considering children’s mobilities. Furthermore has children’s cycling largely been studied as independent mobility and active school travel....... How cycling is learned and constituted, and how cycling skills are consolidated, extended and turned into a stabilized practice remains unstudied. Drawing on in-depth interview data from the region of Copenhagen, Denmark, among families with children (N=20) the paper provides new insights into how...

  18. Articulated body mobile robot

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

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

    Jacobsen, Kjetil; Johansen, Dag

    1997-01-01

    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,...

  20. Mobile IPTV: Implications for Education

    Pannee Suanpang

    2013-01-01

    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 dem...

  1. Client Mobile Software Design Principles for Mobile Learning Systems

    Qing Tan

    2009-01-01

    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.

  2. Mobile and contextual learning

    Agnes Kukulska-Hulme

    2009-12-01

    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.

  3. Mobile Sensing Systems

    Elsa Macias

    2013-12-01

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

  4. Warehousing Massive Mobile Datasets

    Zhipeng Liu

    2014-09-01

    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.

  5. Cooperative Mobile Web Browsing

    Zhang Q

    2009-01-01

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

  6. The Mobile Magazine Services Platform

    Pfeifer, Tom; Downes, Barry

    2005-01-01

    The m-Mag platform advances the state of the art in mobile services by bridging the gap between mobile Operators and content Publishers, enabling the creation of a new category of mobile service called a mobile magazine. An m-Mag mobile magazine is a next generation mobile publishing service that is made available from a mobile operator's portal, that is integrated with value added mobile data services and that uses the operator's billing capabilities to charge consumers for access to the mag...

  7. Editorial: Mobile (March 2010

    Thomas Kunz

    2010-02-01

    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.

  8. Mobile Phone as Pedagogical Tools: Are Teachers Ready?

    Ismail, Issham; Azizan, Siti Norbaya; Azman, Nizuwan

    2013-01-01

    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…

  9. Student Mobility and Its Implication for Schools' Adequate Yearly Progress

    Thompson, Sharon M.; Meyers, Joel; Oshima, T. Chris

    2011-01-01

    Correlation and regression analyses were used to investigate the relationship of student mobility (as expressed by the school-level mobility rate) and first through fifth grade reading, language arts, and mathematics achievement for a statewide sample of 1062 elementary schools. Comparison data were analyzed to further investigate the relationship

  10. Data mining mobile devices

    Mena, Jesus

    2013-01-01

    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

  11. Mobile communication and intermediality

    Helles, Rasmus

    2013-01-01

    The article argues the importance of intermediality as a concept for research in mobile communication and media. The constant availability of several, partially overlapping channels for communication (texting, calls, email, Facebook, etc.) requires that we adopt an integrated view of the various...... communicative affordances of mobile devices in order to understand how people choose between them for different purposes. It is argued that mobile communication makes intermediality especially central, as the choice of medium is detached from the location of stationary media and begins to follow the user across...

  12. Mobile networks architecture

    Perez, Andre

    2013-01-01

    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

  13. Anonymous Mobile Payment Solution

    Alhaj Ali Jalila

    2015-09-01

    Full Text Available The evolution and increasing popularity of mobile handheld devices has led to the development of payment applications. The global acceptance of mobile payments is hindered by security and privacy concerns. One of the main problems evoked is the anonymity related with banking transactions. In this paper I propose a new secured architecture for mobile banking. Anonymity and privacy protection are the measures to be enhanced in order to satisfy people’s current needs. The banking platform must provide the highest level of security for messages exchanged between bank and the customer.

  14. Mobile radio channels

    Pätzold, Matthias

    2011-01-01

    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

  15. Mobile ad hoc networking

    John Wiley & Sons

    2004-01-01

    "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.

  16. MOBILE COMMERCE: A REVIEW

    Shruti Jain

    2012-10-01

    Full Text Available As the power of wireless increases, it provides various opportunities for improving services to customers. In todays 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.

  17. Ideas in Mobile Learning

    Cook, John; Mor, Yishay; Santos, Patricia

    2015-01-01

    The contributions for this Special Collection on ‘Ideas in Mobile Learning’ expand on the trends explored in the successful ‘Bristol Ideas in Mobile Learning Symposium’ which ran on the 6th and 7th March, 2014 (see Cloudworks, 2014; BIML, 2014). Four papers in this Special Issue are expanded versions of presentations at the Bristol Symposium. Taken with the additional papers obtained from an open call we have a timely overview of mobile learning state-of-the-art research.

  18. Mobile Context Toolbox

    Stopczynski, Arkadiusz; Larsen, Jakob Eg; Skomail, Lukasz

    2010-01-01

    to the context framework. We present initial results from in-the-wild experiments where contextual data was acquired using the tool. In the experiments 6 participants were using a Nokia N900 mobile phone continuously with a logger application for an average of 33 days. The study has provided valuable......In this paper we describe an open framework utilizing sensors and application data on the Maemo mobile platform enabling rapid prototyping of context-aware mobile applications. The framework has an extensible layered architecture allowing new hardware and software sensors and features to be added...

  19. Mobility Management in Denmark

    Guasco, Clement Nicolas

    2012-01-01

    There is today an undisputed superiority of cars on any other means of transportation, both practically and psychologically. However, the reliance on cars as the main means of transportation has led to a number of social and environmental problems. Mobility Management aims at managing the way...... people fulfil their mobility needs so that they rely less on their cars and start using alternatives such as bicycles and public transport. This article analyses the possibility to use businesses as vectors for introducing Mobility Management within social practices in Denmark in the light of the recent...

  20. Windows Azure mobile services

    Johnson, Bruce

    2013-01-01

    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

  1. Abrechnung mobiler Mehrwertdienste

    Pousttchi, Key

    2003-01-01

    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...

  2. Mobile Agent Computing

    Mrigank Rajya

    2011-01-01

    In a broad sense, an agent is any program that acts on behalf of a (human) user. A mobile agent then is a program which represents a user in a computer network, and is capable of migrating autonomously from node to node, to perform some computation on behalf of the user. In computer science, a mobile agent is a composition of computer software and data which is able to migrate (move) from one computer to another autonomously and continue its execution on the destination computer. Mobile Agent...

  3. Mobile Game Probes

    Borup Lynggaard, Aviaja

    2006-01-01

    This paper will examine how probes can be useful for game designers in the preliminary phases of a design process. The work is based upon a case study concerning pervasive mobile phone games where Mobile Game Probes have emerged from the project. The new probes are aimed towards a specific target...... group and the goal is to specify the probes so they will cover the most relevant areas for our project. The Mobile Game Probes generated many interesting results and new issues occurred, since the probes came to be dynamic and favorable for the process in new ways....

  4. MOBILE COMMERCE: A REVIEW

    Shruti Jain

    2012-10-01

    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.

  5. Mobility of Hellenistic women

    Loman, Pasi

    2004-01-01

    The purpose of the current thesis is to study various aspects of womens mobility in the so-called Hellenistic period. It will attempt to provide answers to the questions why did women travel, how common was it for women to travel, and most importantly, did women take part in the Hellenistic colonisation processes. The importance of womens mobility for the Greek societies as a whole will also be evaluated. To study the mobility of Hellenistic women we shall use a wide variety of li...

  6. Mobility of radiocesium in soils around Bratislava

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

  7. Mobility Experiences of Adolescents with Cerebral Palsy

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

    2009-01-01

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

  8. Mobility Experiences of Adolescents with Cerebral Palsy

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

    2009-01-01

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

  9. Mobile IPTV: Implications for Education

    Pannee Suanpang

    2013-10-01

    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.

  10. Direct reading pocket type electroscope exposure meters - 1973

    1976-01-01

    This standard covers such instruments as reading exposure to X- and/or gamma-radiation and working in part or whole of the range from 30 keV to 3 MeV. Requirements for adjustment, sealing, cleaning, mechanical strength, performance, marking and certificate are included. It substantially agrees with ISO/R 1758.

  11. Understanding Mobile Apps

    ... its location so your phone carrier can efficiently route calls. Even if you turn off location services ... new; there are only a few on the market, including some with free versions. Mobile App User ...

  12. Making Daily Mobility

    Jensen, Ole B.; Wind, Simon

    mobilities theory (Urry 2007; Larsen et al. 2006) and practice theory (Schatzki 2001; Reckwitz 2002; Shove et al. 2012) this paper seeks to unfold a theoretical framework for understanding of the household’s mobility coping strategies and how these strategies are actualised and materialised into mobility...... practice configurations. The paper draws on empirical material collected from the project ‘Analysis of activity-based travel chains and sustainable mobility’ (ACTUM WP2), consisting of qualitative semi-structured interviews with 45 respondents in 11 children families spread across the Greater Copenhagen in...... elucidate aspects of urban everyday mobility that can be utilized in policy and planning perspectives. This knowledge can aid construction of generalized qualitative scenarios that together with quantitative transport models can serve as wider knowledge foundation in decision making process....

  13. Promoting regional mobility

    Jensen, Anne

    Pricing of transport has been part of EU's common transport policy since this gained momentum in the early 1990s. Since then, it has been closely connected to the trans-European transport network (TEN-T) and to rising demands of efficient mobility systems at a local, regional and Community scale....... Development of pricing policies is contested at Community level and has taken place in a clash between different policy rationalities. Significantly though, the effects of the pricing policies are closely related to regional mobility systems, e.g. through financing large trans-border infrastructure projects...... include ideas of mobility as a narrative in community transport policy which further that through Community pricing policies, the conditions for mobility is enhanced in a Community perspective. However, when this is connected to infrastructure pricing, the effect is largest at a regional scale. Further...

  14. jQuery Mobile

    Reid, Jon

    2011-01-01

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

  15. Mobile School Service

    Borislav Odadzic

    2010-04-01

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

  16. Intergenerational earnings mobilities

    Hussain, Azhar; Munk, Martin D.; Bonke, Jens

    This article gives various estimates of intergenerational earnings mobility by applying different earning periods, age brackets, and earning components. The methodology enables us to investigate how sensitive results are to different delimitations and, thereby, to make more accurate international...

  17. Mobile Learning Applications Audit

    Paul POCATILU

    2010-01-01

    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.

  18. Persuasive Mobile Health Applications

    Garcia Wylie, Carlos; Coulton, Paul

    With many industrialized societies bearing the cost of an increasingly sedentary lifestyle on the health of their populations there is a need to find new ways of encouraging physical activity to promote better health and well being. With the increasing power of mobile phones and the recent emergence of personal heart rate monitors, aimed at dedicated amateur runners, there is now a possibility to develop “Persuasive Mobile Health Applications” to promote well being through the use of real-time physiological data and persuade users to adopt a healthier lifestyle. In this paper we present a novel general health monitoring software for mobile phones called Heart Angel. This software is aimed at helping users monitor, record, as well as improve their fitness level through built-in cardio-respiratory tests, a location tracking application for analyzing heart rate exertion over time and location, and a fun mobile-exergame called Health Defender.

  19. Mobile Tracking Application

    RADHIKA KINAGE; JYOTSHNA KUMARI; PURVA ZALKE; MEENAL KULKARNI

    2013-01-01

    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...

  20. Mobile Ad Hoc Network

    Li, Chengcheng,

    2010-01-01

    As a new generation of wireless communication system, mobile ad-hoc network has developed greatly during the past ten years. Endowed by great mobility, dynamic topology, self-organizing and other unique features, it is commonly used in emergency operations, disaster relief efforts and military networks. However, this new wireless network has lots of technical challenges and potential benefits need to be discovered and conquered. Without a doubt, we will soon be able to see ad-hoc network depl...

  1. Mobile Communication Evolution

    Kuboye Bamidele Moses

    2014-01-01

    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 ...

  2. Mobiles for information skills

    Walsh, Andrew

    2012-01-01

    Smartphones; iPads; netbooks; iPod touches; MP3 players; and more seem to be everywhere. Pretty much all our users have at least one, so how can we use them to improve the information skills of our users? More seriously, how does information literacy change in a mobile environment and what does this mean to the services we offer our users? This presentation covers these topics and offers an opportunity to play with some mobile technology as well!

  3. Mobile Intelligent Autonomous Systems

    Jitendra R. Raol; Ajith Gopal

    2010-01-01

    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) ve...

  4. Mobile Augmented Reality Applications

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

    2011-01-01

    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 computing to enable using...

  5. Mobile Objects in Java

    Luc Moreau; Daniel Ribbens

    2002-01-01

    Mobile Objects in Java provides support for object mobility in Java. Similarly to the RMI technique, a notion of client-side stub, called startpoint, is used to communicate transparently with a server-side stub, called endpoint. Objects and associated endpoints are allowed to migrate. Our approach takes care of routing method calls using an algorithm that we studied in. The purpose of this paper is to present and evaluate the implementation of this algorithm in Java. In particular, two differ...

  6. SMS Based Mobile Banking

    Surapaneni Pujitha*, B Veera Mallu

    2013-01-01

    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...

  7. Mobile portal services

    Jansson, Erik

    2005-01-01

    The master thesis is examining the possibilities to integrate a mobile unit in a portal service built on a service oriented architecture. A portal is an overall solution for the need of public web, intranet and extranet of an enterprise. The thesis starts off by identifying interesting business concepts for mobile units. Then a specific concept is chosen to be implemented as a smart client solution. On the way to the final prototype application areas such as occasionally connected clients, di...

  8. Indigenization of Urban Mobility

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

    2014-01-01

    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 algorith...

  9. Cooperative Mobile Web Browsing

    G. P. Perrucci; F. H. P. Fitzek; Zhang, Q.; M. D. Katz

    2009-01-01

    This paper advocates a novel approach for mobile web browsing based on cooperation among wireless devices within close proximity operating in a cellular environment. In the actual state of the art, mobile phones can access the web using different cellular technologies. However, the supported data rates are not sufficient to cope with the ever increasing traffic requirements resulting from advanced and rich content services. Extending the state of the art, higher data rates can only be achiev...

  10. Chapter 4: Mobility Support

    Barceló Arroyo, Francisco; Aguayo-Torres, M.C.; Al Begain, K.; Martín Escalona, Israel; Vassilou, V.

    2009-01-01

    Wireless access allows independency between the user’s position and the physical bearer used to access services from the network. However, this independency does not imply that wireless networks show a full ability to cope with any degree of mobility. This is because other constraints can limit the mobility when accessing the network. The main constraints are registration and addressing (e.g., of user, terminal, application) and handover. In general, procedures needed to cope with those issue...

  11. Finnish Mobile Gaming Cluster

    Masira, Elijah; Chowdhury, Nafis Ahmed

    2014-01-01

    Abstract The Finnish mobile gaming cluster is one of the most promising industries that have been growing significantly in the past few years to become a substantial cultural export product / service of Finland. The main objective of this research was to gain a persuasive understanding about the emergence of the mobile gaming cluster in Finland and explore the factors behind its success. The literature review centers on M. E Porter’s publications on competitiveness and other publication...

  12. Mobile distributed wireless stereo

    Berbel Gonzalez, Elisabet

    2010-01-01

    Nowadays mobile phones are an essential part of our life. Due to ever increasing demands from the consumer, mobile devices incorporates more and more functionalities. The main aim of this project is develop an application able to transmit audio files in real time using a Internet Tablet from Nokia (N810) and analyze all the problems that can come up as the synchronization between devices.

  13. Mobile media and children

    Haddon, L.

    2013-01-01

    This article explores a range of research issues relating to children and mobile media, including the potential growth of children’s screen time, the regulation of children’s use of these media, the challenge of managing increasing media options, effects on children’s perception of time, problems posed for parental surveillance and the domestication of mobile media within peer groups. All of these are viewed in the context of broader societal change, evolving norms of childhood and parenthood...

  14. Earnings Mobility in Europe

    Sologon, Denisa Maria; O'Donoghue, Cathal

    2011-01-01

    The economic reality of the 1990s in Europe forced the labour markets to become more flexible. Using a consistent comparative dataset for 14 European countries, the European Community Household Panel (ECHP), we explore the evolution and the cross-national differences in earnings mobility across Europe between 1994 and 2001 from three angles: first, the evolution of short-term inequality and its link with cross-sectional inequality; second, the evolution of long-term mobility relat...

  15. Mobile Database System: Role of Mobility on the Query Processing

    Sharma, Samidha Dwivedi

    2010-01-01

    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.

  16. Analysis of Mobile Users Perception towards SMS Voting

    Ali Hussein Saleh Zolait

    2008-12-01

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

  17. A* Sampling

    Maddison, Chris J.; Tarlow, Daniel; Minka, Tom

    2014-01-01

    The problem of drawing samples from a discrete distribution can be converted into a discrete optimization problem. In this work, we show how sampling from a continuous distribution can be converted into an optimization problem over continuous space. Central to the method is a stochastic process recently described in mathematical statistics that we call the Gumbel process. We present a new construction of the Gumbel process and A* sampling, a practical generic sampling algorithm that searches ...

  18. INTERNET MOBILE USERS FROM ROMANIA AND MOBILE APPS

    MIHAELA TUTUNEA

    2011-01-01

    The development of mobile technologies triggered also the development of the software industry for mobile devices. Any mobile phone, depending on its features, has preinstalled basic applications, which make it functional. Along these, the user can install more applications according to his needs. Must be noticed the current trend: companies developing and offering their own mobile applications, which can be downloaded directly from the mobile websites. The present study tries to identify the...

  19. Sensor Mobility Control for Multitarget Tracking in Mobile Sensor Networks

    Yinfei Fu; Le Yang

    2014-01-01

    In emerging tracking systems using mobile wireless sensor networks, sensor mobility management is essential for balancing the tracking performance and costs under limited network resources and sensor movements. This paper considers the sensor mobility control problem for multitarget tracking (MTT), in which multiple mobile sensors are dynamically grouped and moved to track multiple targets and collaborate within each sensor group via track data fusion. A novel sensor mobility control framewor...

  20. Developing Mobile Collaborative Learning Applications for Mobile Users

    Kwang B Lee

    2011-01-01

    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...

  1. Communication models in mobile computing systems and mobile agents

    Tufekcioglu, Refik

    2000-01-01

    This thesis study covers wired and wireless mobile computing environments, introduces the components of the mobile environment, discusses the constraints of mobility, and contains a taxonomy of the current techniques/ models that reduce the overheads associated with wireless mobile communication. One of the goals of this thesis study was to identify and define communication techniques and models that are used by mobile computing systems to minimize wireless communication cost. The following c...

  2. How mobility increases mobile cloud computing processing capacity

    Nguyen, Anh-Dung; Sénac, Patrick; Ramiro, Victor; Diaz, Michel

    2011-01-01

    In this paper, we address a important and still unanswered question in mobile cloud computing ``how mobility impacts the distributed processing power of network and computing clouds formed from mobile ad-hoc networks ?''. Indeed, mobile ad-hoc networks potentially offer an aggregate cloud of resources delivering collectively processing, storage and networking resources. We demonstrate that the mobility can increase significantly the performances of distributed computation in such networks. In...

  3. Telemedicine Based on Mobile Devices and Mobile Cloud Computing

    Lidong Wang; Cheryl Ann Alexander

    2014-01-01

    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 smartphon...

  4. Mobile Learning Practice In Higher Education in Nepal

    Krishna Prasad Parajuli

    2016-03-01

    Full Text Available During the 15 years of this current century, mobile technology has become a leading technology in the support of educational outcomes. This study investigated the mobile learning practices among undergraduates in higher education in the semi-urban and rural areas of the Gorkha district of Nepal. The objectives were to explore the availability of mobile technology for learning; its costs; learning trends, institutional policies, and attitudes towards mobile learning. These factors were explored to identify implications for pedagogical practice. The study adopted a mixed methods design, in which the quantitative data were collected by using a questionnaire with a sample of 161 undergraduates from six campuses. The qualitative data were collected from 19 purposively selected respondents by the way of semi-structured interviews. The result indicated that virtually all undergraduates possessed their mobile phones and used them informally for learning both inside and outside of their classes. The majority of the students had positive attitudes towards mobile learning. However, many were not satisfied with the effectiveness of their practices or with the level of institutional support for using mobile devices to support their learning. Although comprehensive mobile learning is not widespread in Nepal, enriching conventional learning by the incremental use of mobile devices is possible in Nepalese institutes of higher education. I conclude that teachers and institutions should provide guidance to students about the effective uses of mobile technology because successful use of technology in learning largely depends on appropriate pedagogy and teacher support.

  5. Mobile library services best practices

    Harmon, Charles

    2013-01-01

    Mobile Library Services provides 11 proven ways to reach out to mobile users and increase your library's relevance to their day-to-day lives. Librarians detail how they created mobile apps to how they went mobile on a shoestring budget. Written by public, academic, and special librarians, these 11 best practices offer models for libraries of every type and size.

  6. Interactive TV meets Mobile Computing

    Rauschenbach, Uwe

    2005-01-01

    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.

  7. Mastering jQuery mobile

    Lambert, Chip

    2015-01-01

    You've started down the path of jQuery Mobile, now begin mastering some of jQuery Mobile's higher level topics. Go beyond jQuery Mobile's documentation and master one of the hottest mobile technologies out there. Previous JavaScript and PHP experience can help you get the most out of this book.

  8. Mobile medical image retrieval

    Duc, Samuel; Depeursinge, Adrien; Eggel, Ivan; Müller, Henning

    2011-03-01

    Images are an integral part of medical practice for diagnosis, treatment planning and teaching. Image retrieval has gained in importance mainly as a research domain over the past 20 years. Both textual and visual retrieval of images are essential. In the process of mobile devices becoming reliable and having a functionality equaling that of formerly desktop clients, mobile computing has gained ground and many applications have been explored. This creates a new field of mobile information search & access and in this context images can play an important role as they often allow understanding complex scenarios much quicker and easier than free text. Mobile information retrieval in general has skyrocketed over the past year with many new applications and tools being developed and all sorts of interfaces being adapted to mobile clients. This article describes constraints of an information retrieval system including visual and textual information retrieval from the medical literature of BioMedCentral and of the RSNA journals Radiology and Radiographics. Solutions for mobile data access with an example on an iPhone in a web-based environment are presented as iPhones are frequently used and the operating system is bound to become the most frequent smartphone operating system in 2011. A web-based scenario was chosen to allow for a use by other smart phone platforms such as Android as well. Constraints of small screens and navigation with touch screens are taken into account in the development of the application. A hybrid choice had to be taken to allow for taking pictures with the cell phone camera and upload them for visual similarity search as most producers of smart phones block this functionality to web applications. Mobile information access and in particular access to images can be surprisingly efficient and effective on smaller screens. Images can be read on screen much faster and relevance of documents can be identified quickly through the use of images contained in the text. Problems with the many, often incompatible mobile platforms were discovered and are listed in the text. Mobile information access is a quickly growing domain and the constraints of mobile access also need to be taken into account for image retrieval. The demonstrated access to the medical literature is most relevant as the medical literature and their images are clearly the largest knowledge source in the medical field.

  9. Sencha Touch Mobile JavaScript Framework

    Rao, SSVV Narasimha

    2012-01-01

    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

  10. Aero particles characterization emitted by mobile sources

    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)

  11. Barcode Payment System in Trusted Mobile Devices

    Vibha Kaw Raina

    2012-01-01

    Mobile payment is an application of mobile commerce which facilitates mobile commerce transactions by providing the mobile customer with a convenient means to pay. Many mobile payment methods have been proposed and implemented like user friendly, customer centric, merchant centric where security concerns are highly addressed. This paper proposes a mobile payment model with barcodes for mobile users to improve mobile user experience in mobile payment. Unlike other existing mobile payment syste...

  12. Mobility Network and Safety

    Adriana Galderisi

    2010-04-01

    Full Text Available Mobility network is crucial for ensuring territorial safety with respect to natural and technological hazards. They represent a basic support to community’s everyday life although being exposed elements often characterized by high vulnerability to different hazards and, in the meanwhile, strategic equipments for emergency management. Physical damages or the lack in functioning of those networks may greatly increase the loss of human lives caused by hazardous events as well as produce relevant economic damages at medium and long term. Although the relevance of the mobility networks in assuring territorial safety is at present largely recognized, risk analyses have been long focused on buildings’ vulnerability or, even where they have paid attention to mobility network, they have been mainly focused on the physical damages that a given hazard could may induce on individual elements of such network. It is recent the awareness that mobility network represents a system, characterized by relevant interdependences both among its elements and among network infrastructures and urban systems. Based on these assumptions, this paper points out the heterogeneous aspects of the mobility network vulnerability and their relevance in increasing the overall territorial or urban vulnerability to hazardous events. Therefore, an in-depth investigation of the concept of mobility network vulnerability is provided, in order to highlight the aspects mostly investigated and more recent research perspectives. Finally, a case study in the Campania Region is presented in order to point out how traditional risk analyses, generally referred to individual hazards, can sometimes led to invest in the mobility network improvement or development which, targeted to increase the security of a territory result, on the opposite, in an increase of the territorial vulnerability.

  13. Presence experience in mobile gaming

    Laarni, Jari

    2005-01-01

    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 ...

  14. Mobile concrete factory profiability analysis

    Bajželj, Grega

    2009-01-01

    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...

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

    Wright, Steve; Parchoma, Gale

    2011-01-01

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

  16. Stackable differential mobility analyzer for aerosol measurement

    Cheng, Meng-Dawn (Oak Ridge, TN); Chen, Da-Ren (Creve Coeur, MO)

    2007-05-08

    A multi-stage differential mobility analyzer (MDMA) for aerosol measurements includes a first electrode or grid including at least one inlet or injection slit for receiving an aerosol including charged particles for analysis. A second electrode or grid is spaced apart from the first electrode. The second electrode has at least one sampling outlet disposed at a plurality different distances along its length. A volume between the first and the second electrode or grid between the inlet or injection slit and a distal one of the plurality of sampling outlets forms a classifying region, the first and second electrodes for charging to suitable potentials to create an electric field within the classifying region. At least one inlet or injection slit in the second electrode receives a sheath gas flow into an upstream end of the classifying region, wherein each sampling outlet functions as an independent DMA stage and classifies different size ranges of charged particles based on electric mobility simultaneously.

  17. Mobile Apps and Romanian Mobile Devices Users’ Preferences

    Mihaela Filofteia TUTUNEA

    2014-10-01

    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.

  18. Mobile Communication Evolution

    Kuboye Bamidele Moses

    2014-01-01

    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.

  19. 5G Mobile Technology

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

    2013-02-01

    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.

  20. Mobile systems capability plan

    This plan was prepared to initiate contracting for and deployment of these mobile system services. 102,000 cubic meters of retrievable, contact-handled TRU waste are stored at many sites around the country. Also, an estimated 38,000 cubic meters of TRU waste will be generated in the course of waste inventory workoff and continuing DOE operations. All the defense TRU waste is destined for disposal in WIPP near Carlsbad NM. To ship TRU waste there, sites must first certify that the waste meets WIPP waste acceptance criteria. The waste must be characterized, and if not acceptable, subjected to additional processing, including repackaging. Most sites plan to use existing fixed facilities or open new ones between FY1997-2006 to perform these functions; small-quantity sites lack this capability. An alternative to fixed facilities is the use of mobile systems mounted in trailers or skids, and transported to sites. Mobile systems will be used for all characterization and certification at small sites; large sites can also use them. The Carlsbad Area Office plans to pursue a strategy of privatization of mobile system services, since this offers a number of advantages. To indicate the possible magnitude of the costs of deploying mobile systems, preliminary estimates of equipment, maintenance, and operating costs over a 10-year period were prepared and options for purchase, lease, and privatization through fixed-price contracts considered

  1. Are mobile phones harmful?

    Blettner, M; Berg, Gabriele

    2000-01-01

    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 epidemiological studies 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...

  2. Intelligent mobile security systems

    This paper reports that mobile security systems are becoming increasingly important to military (Army, Air Force) and non-military (Drug Enforcement Agency, Border Patrol) organizations as the level and sophistication of terrorist activity increases. Frequently, organizations are required to deploy at remote sites on little notice. To ensure protection of life and equipment, security systems are sometimes required. Often, the personnel deployed on these missions are not adequately trained in the selection, installation, and operation of today's complex security equipment. The Intelligent Mobile Security System (IMSS) concept, as being developed by Sandia National Laboratories (SNL), allows untrained, non-technical personnel to configure, deploy, operate, and troubleshoot temporary/mobile physical security system. The IMSS may be used at nuclear facilities

  3. Mobile Probing and Probes

    Duvaa, Uffe; Ørngreen, Rikke; Weinkouff Mathiasen, Anne-Gitte; Blomhøj, Ulla

    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...

  4. Mobile Probing and Probes

    Duvaa, Uffe; Ørngreen, Rikke; Weinkouff, Anne-Gitte; Blomhøj, Ulla

    Mobile probing is a method, which has been 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...

  5. Mobile Phone Terminal

    1978-01-01

    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.

  6. Children, Mobility, and Space

    Christensen, Pia; Romero Mikkelsen, Miguel; Nielsen, Thomas Alexander Sick; Harder, Henrik

    2011-01-01

    This article discusses the potentials of a mixed methods approach to the study of children’s mobility patterns. The methodology presented here combined ethnographic fieldwork with global positioning system technology and an interactive questionnaire that children completed via mobile phone. This...... innovative methodology allowed the researchers to generate a rich understanding of children’s everyday movements. The study combined documentation of children’s subjective experiences with systematic observations, mapping, and survey data. The article sets out lessons learned for future mixed methods...... research into children’s everyday mobility. One such lesson was that it required the interdisciplinary research team to cooperate closely through dialogue, support, and coordination of activities and perspectives. The approach also promoted the children’s commitment to the study....

  7. Supplier Resource Mobilization

    Ellegaard, Chris; Kragh, Hanne; Andersen, Poul Houman

    Companies that wish to draw benefit from supplier resources beyond standard market offerings must actively make an effort to mobilize these resources. This task has been a major topic of interest in the management literature, but the continued reported problems of companies attempting to influence...... suppliers suggests that the knowledge of this challenge is yet inadequate. The purpose of this paper is therefore to establish a research agenda on supplier resource mobilization that can improve this knowledge. To fulfill the purpose we review the management literature and identify the most prevalent...... theoretical perspectives. This review, synthesis, and resultant discussion allow us to propose that future research should look closer at the resource activation process on the supplier side, the role of the buyer-supplier relationship in resource mobilization, and the approach of the buying company in...

  8. SMS Based Mobile Banking

    Surapaneni Pujitha*, B Veera Mallu

    2013-04-01

    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

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

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

    2014-01-01

    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, ...

  10. Sampling Development

    Adolph, Karen E.; Robinson, Scott R.

    2011-01-01

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

  11. Language sampling

    Rijkhoff, Jan; Bakker, Dik

    1998-01-01

    This article has two aims: [1] to present a revised version of the sampling method that was originally proposed in 1993 by Rijkhoff, Bakker, Hengeveld and Kahrel, and [2] to discuss a number of other approaches to language sampling in the light of our own method. We will also demonstrate how our...

  12. Lazy Mobile Intruders

    Mödersheim, Sebastian Alexander; Nielson, Flemming; Nielson, Hanne Riis

    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......, since it provides a small, abstract formalism that models the essence of mobile code. We provide a decision procedure for 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...

  13. Lazy Mobile Intruders

    Mödersheim, Sebastian Alexander; Nielson, Flemming; Nielson, Hanne Riis

    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......, since it provides a small, abstract formalism that models the essence of mobile code. We provide a decision procedure for security against arbitrary intruder ambients when the honest ambients can only perform a bounded number of steps and without path constraints in communication....

  14. Mobile Tracking Application

    RADHIKA KINAGE

    2013-03-01

    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.

  15. Nokia and mobile gaming

    Martini, Robert

    2007-01-01

    This paper investigates the game market segments, size, and growth. Nokia’s participation in this market with its N-Gage product and N-Gage platform is examined in detail. Following is an industry analysis that produces a summary of the types of forces that affect Nokia’s ability to operate in this market. The value chain investigation looks at the inputs that make up the mobile game market and how Nokia uses these inputs to bring mobile gaming to the target market. The first recommendation f...

  16. Mobile satellite communication networks

    Sheriff, Ray E

    2003-01-01

    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

  17. Mobile Augmented Reality Applications

    Prochazka, David; Popelka, Ondrej; Stastny, Jiri

    2011-01-01

    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 computing to enable using of more complex computational methods such as neural networks. Our goal is to create an affordable augmented reality application suitable which will help car designers in by 'virtualizing' car modifications.

  18. Professional mobile application development

    McWherter, Jeff

    2012-01-01

    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

  19. Segway robotic mobility platform

    Nguyen, Hoa G.; Morrell, John; Mullens, Katherine D.; Burmeister, Aaron B.; Miles, Susan; Farrington, Nathan; Thomas, Kari M.; Gage, Douglas W.

    2004-12-01

    The Segway Robotic Mobility Platform (RMP) is a new mobile robotic platform based on the self-balancing Segway Human Transporter (HT). The Segway RMP is faster, cheaper, and more agile than existing comparable platforms. It is also rugged, has a small footprint, a zero turning radius, and yet can carry a greater payload. The new geometry of the platform presents researchers with an opportunity to examine novel topics, including people-height sensing and actuation modalities. This paper describes the history and development of the platform, its characteristics, and a summary of current research projects involving the platform at various institutions across the United States.

  20. Autonomous mobile robot teams

    Agah, Arvin; Bekey, George A.

    1994-01-01

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

  1. Environmental sampling

    Puckett, J.M.

    1998-12-31

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

  2. Environmental sampling

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

  3. Entropy-Based Privacy against Profiling of User Mobility

    Alicia Rodriguez-Carrion

    2015-06-01

    Full Text Available Location-based services (LBSs flood mobile phones nowadays, but their use poses an evident privacy risk. The locations accompanying the LBS queries can be exploited by the LBS provider to build the user profile of visited locations, which might disclose sensitive data, such as work or home locations. The classic concept of entropy is widely used to evaluate privacy in these scenarios, where the information is represented as a sequence of independent samples of categorized data. However, since the LBS queries might be sent very frequently, location profiles can be improved by adding temporal dependencies, thus becoming mobility profiles, where location samples are not independent anymore and might disclose the user’s mobility patterns. Since the time dimension is factored in, the classic entropy concept falls short of evaluating the real privacy level, which depends also on the time component. Therefore, we propose to extend the entropy-based privacy metric to the use of the entropy rate to evaluate mobility profiles. Then, two perturbative mechanisms are considered to preserve locations and mobility profiles under gradual utility constraints. We further use the proposed privacy metric and compare it to classic ones to evaluate both synthetic and real mobility profiles when the perturbative methods proposed are applied. The results prove the usefulness of the proposed metric for mobility profiles and the need for tailoring the perturbative methods to the features of mobility profiles in order to improve privacy without completely loosing utility.

  4. Mobile Computing Trends in Saudi Arabia: An Exploratory Study

    Mutlaq B. Alotaibi

    2014-12-01

    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.

  5. Innovation for future mobile services

    Helgeson, Bo; Hardemo, Isa; Olofsson, Sarah; Pettersson, Mårten; Hederstierna, Anders; Wrenne, Anders; Hallqvist, Klas

    2003-01-01

    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 ways to identify and sc...

  6. Instant XenMobile MDM

    Lakhani, Aamir

    2013-01-01

    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.

  7. SMS advertisements\\\\\\' adoption among Tehran mobile users

    Manizheh Haghighinasab

    2014-05-01

    Full Text Available Mobile marketing and SMS (short message services advertising in particular, have been recently used. Even though SMS-based advertising is inexpensive, interactive, and able to yield a high response rate, middle or big size companies do not use it in Iran. For as much as its adoption was unclear, this study was organized to find it out. Since the most populated city in our country, Tehran, is a good multicultural instance to study in many fields, this research has aimed at its citizens' intention to use SMS advertisement. The statistical populations included are mobile users, who came to Mobile Customer Service located in north, south, west, east and centre of Tehran. From which 384 were considered as samples. Technology Acceptance Model (TAM was used for making hypothesizes. Survey's data was collected by questionnaire with cluster and random sampling. Collected data was analyzed regarding to the method: Structural Equation Modeling (SEM in order to do which, the technique Partial List Squares (PLS were used. The results revealed that: despite the lack of adoption for the SMS advertising among mobile users in Tehran, there could be chances to improve it by better perceived usefulness as well as its ease of use. Innovativeness of the people and their trust has indirect impact on their intention to use. Moreover, getting prior permission, making a profile, and individualizing the context with richness of information and entertainers are recommended. Using the new generation 3G and shortcuts will be able to improve SMS advertisement's adoption as well.

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

    Braun, Peter

    2005-01-01

    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...

  9. Virtuous mobility: moralising vs measuring geographical mobility in Africa

    G. H. Pirie

    2009-01-01

    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.

  10. A Hierarchical Mobile IPv6 Proposal

    Castelluccia, Claude

    1998-01-01

    The IETF Mobile IPv6 protocol has been developped to manage global (macro) mobility. It is not adapted to local (micro) mobility since it does not support any kind of hierarchy. This report presents a hierarchical protocol, built on top of Mobile IPv6, that separates local mobility (within a site) from global mobility (across sites)management. Local handoffs are managed locally and transparently to a mobile node'correspondent hosts while global mobility is managed with Mobile IPv6. Our scheme...

  11. Implementing the Emerging Mobile Technologies in Facilitating Mobile Exam System

    Meng, Zhaozong; Lu, Joan

    2011-01-01

    Because of the wide possession of the handheld mobile devices, the application of the mobile technologies in enhancing learning activities attracts much research interest. This investigation aims at implementing students faced mobile technologies into test and exam to simplify the exam management and performance assessment. The research work focuses on the aspects of mobile device and platform oriented design, light-weight and efficient application, fast and convenient question navigation, an...

  12. Mobility Prediction Based Neighborhood Discovery for Mobile Ad Hoc Networks

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

    2010-01-01

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

  13. Mobility Prediction Based Neighborhood Discovery in Mobile Ad Hoc Networks.

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

    2011-01-01

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

  14. MOBILE ROBOT CONTROL SYSTEM

    Marius Sebastian Rusu

    2012-01-01

    This paper presents a simple concept of low cost mobile robot control system for source following applications. The robot uses two analog sensors and two independent motors for steering. The control system itself is a modified class D amplifier that generates complementary PWM signals modulated by the difference of the signals from the sensors.

  15. Mobile lighting apparatus

    Roe, George Michael; Klebanoff, Leonard Elliott; Rea, Gerald W; Drake, Robert A; Johnson, Terry A; Wingert, Steven John; Damberger, Thomas A; Skradski, Thomas J; Radley, Christopher James; Oros, James M; Schuttinger, Paul G; Grupp, David J; Prey, Stephen Carl

    2013-05-14

    A mobile lighting apparatus includes a portable frame such as a moveable trailer or skid having a light tower thereon. The light tower is moveable from a stowed position to a deployed position. A hydrogen-powered fuel cell is located on the portable frame to provide electrical power to an array of the energy efficient lights located on the light tower.

  16. Mathematics and Mobile Learning

    White, Tobin; Martin, Lee

    2014-01-01

    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

  17. Mobility of photosynthetic proteins

    Kaňa, Radek

    2013-01-01

    Roč. 116, 2-3 (2013), s. 465-479. ISSN 0166-8595 R&D Projects: GA ČR 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

  18. UCLA mobile clinic project.

    Hastings, Joseph; Zulman, Donna; Wali, Soma

    2007-11-01

    We report on a man seeking care at the UCLA mobile clinic, illustrating and then discussing the challenges of caring for people who are homeless (especially mental illness and potential distrust of providers). Student-run free clinics can be beneficial but further research must examine how well such clinics meet homeless patients' needs. PMID:17982203

  19. Waves and mobile phones

    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.)

  20. Measuring Mobile Phone Use

    Boase, Jeff; Ling, Richard

    2013-01-01

    In this paper we examine how well two types of self-report measures adequately operationalize frequency of mobile phone use by comparing them to server log data. Our self-report measures of voice and SMS text messaging activity are drawn from a nationally representative survey of adults living in...

  1. Mobile exhibition in Mexico

    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

  2. Mobile Learning for All

    Bestwick, Angel; Campbell, John R.

    2010-01-01

    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

  3. Mobile intercept of storms

    Arnold, R. T.

    1985-01-01

    The primary goal was to acquire lightning data to serve as ground truth for U2 overflights. Researchers were successful in instrumenting the Univ. of Mississippi/National Severe Storms Lab. (UM/NSSL) mobile laboratory and in coordinating storm intercept through communication to the U2 provided by airplane guidance at NSSL and through direct communication with the U2 pilot from a portable transceiver in the mobile lab. A demonstration showed that a mobile laboratory can be directed within a large geographical area and used to collect ground truth data for comparison with airborne data on a routine basis with proper utilization of forecasts, nowcasts, and communication among all participants. After the U2 flights, researchers turned their attention solely to intercepting severe storms within the area of Oklahoma with good Doppler radar coverage. They incorporated a second vehicle, which followed the mobile lab and from which they released instrumented balloons. This project utilized a standard meteorological rawinsonde and a balloon-borne electric field meter. They were successful in flying, tracking, and receiving data from mobily launched balloons on several days. Researchers believe that they have demonstrated the ability to obtain meteorological and electrical data in severe storms using instrumented balloons. This also includes the capability to launch into the mesocyclone region and for multiple launches in the same storm.

  4. Increasing Mobility Confidence

    ... Español In Your Area NPF Shop Increasing Mobility Confidence To increase your confidence moving, you have to move! Make Text Smaller ... It might seem counterintuitive, but to increase your confidence moving, you have to move! Build physical activity ...

  5. Mobile Probing Kit

    Larsen, Jakob Eg; Sørensen, Lene Tolstrup; Sørensen, J.K.; Schultz, Nette

    2007-01-01

    characterized as being highly nomadic and thus potential users of mobile and ubiquitous technologies. The methodology has been applied in the 1ST MAGNET Beyond project in order to obtain user needs and requirements in the process of developing pilot services. We report on the initial findings from applying this...

  6. Gridless overtone mobility spectrometry.

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

    2013-11-01

    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 β-casein with trypsin). PMID:24125033

  7. Visions of Mobile Learning

    T.H.E. Journal, 2011

    2011-01-01

    It is almost a foregone conclusion that the mobile device will become an indispensable tool for learning in the future. That's why "T.H.E. Journal" asked a number of educators to let their imaginations go wild and conjure up visions of the future of the device in the classroom. This paper presents the views of educators who conjure up the mobile…

  8. Mobile power supply

    Currie, J.A.N.; Kibble, J.D.

    1980-04-01

    This paper reports on research on the mechanization of transport and other outbye operations, in which the provision of mobile power is a serious problem. It surveys diesel engines and other ways of using chemical fuel, together with energy storage and transmissions. The concept of hybrid drives, in which advantages may be obtained from combining two forms of power, is introduced.

  9. Handbook of mobile ad hoc networks for mobility models

    Roy, Radhika Ranjan

    2010-01-01

    Describes 40 different major mobility models along with numerous associate mobility models and their impact on MANET performances comprehensively Fills a void in commercial, military, and the research arena for multihop mobile ad hoc networking Provides case studies, examples, and exercises throughout the book

  10. Mobility Models in Adhoc Networks

    Sandeep Kaur Gill

    2012-12-01

    Full Text Available In Ad-hoc wireless networks, mobility management faces many challenges. Mobility of the nodes causes the network topology to change. The routing protocols must dynamically re-adjust to these changes in order to keep the accurate routes. Therefore, the routing updates traffic overhead is very much high. Generally, different types of mobility patterns have different impact on the network protocols or applications. Thus, the network performance is strongly affected by the nature of mobility pattern. In this paper, we present a survey of various mobility models in ad-hoc networks. One of the main purpose of this paper is to investigate the impact of the mobility model on the performance of a specific network protocol or application. The results indicate that different mobility patterns affect the various protocols in different ways. Specifically, the ranking of routing algorithms is influenced by the choice of mobility pattern.

  11. Structuring mobile and contextual learning

    Glahn, Christian; Specht, Marcus

    2011-01-01

    Glahn, C., & Specht, M. (2011). Structuring mobile and contextual learning. In Proceedings of the 10th World Conference on Mobile and Contextual Learning (pp. 188-195). October, 18-21, 2011, Beijing, China.

  12. Mobiler Lernalltag - Erfahrungsbasiert und informell

    Specht, Marcus

    2013-01-01

    Specht, M. (2013, 26 April). Mobiler Lernalltag - Erfahrungsbasiert und informell. Invited talk given at the Speedlab Mobile Learning organized by the Kooperative Berlin und Bundeszentrale für politische Bildung, Hannover, Germany.

  13. EV-GHG Mobile Source

    U.S. Environmental Protection Agency The EV-GHG Mobile Source Data asset contains measured mobile source GHG emissions summary compliance information on light-duty vehicles, by model, for certification...

  14. EV-GHG Mobile Source

    U.S. Environmental Protection Agency — The EV-GHG Mobile Source Data asset contains measured mobile source GHG emissions summary compliance information on light-duty vehicles, by model, for certification...

  15. Prospects for inclusive mobile learning

    Kukulska-Hulme, Agnes

    2012-01-01

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

  16. Mobile technologies for every library

    Gleason, Ann Whitney

    2015-01-01

    If you are wondering what mobile technology adoption means for your library or how to get started, Mobile Technologies for Every Library will answer your questions! This book will detail the opportunities and pitfalls in using mobile technology in libraries. It will also address platforms, options, security, and best practices for starting new mobile services programs or improving existing services. Gleason previews many useful apps for libraries. Web links and resources are also included.

  17. Mobile-Assisted Language Learning

    Tayebeh Mosavi Miangah; Amin Nezarat

    2012-01-01

    The main characteristics of mobile learning (m-learning) are recognized as the potential for learning process to be personalized, spontaneous, informal and ubiquitous. Although learning through mobile phones may take longer time compared to computers, the learners feel a greater sense of freedom of time and place, so that they can take the advantage of spare time to learn a second language when and wherethey are. Mobile-Assisted Language Learning (MALL) deals with the use of mobile technolog...

  18. Aesthetics of mobile media art

    Baker, Camille; Schleser, Max; Molga, Kasia

    2009-01-01

    In this paper, three London based creative practitioners examine the new emerging possibilities of mobile media in the domain of art and media practice. The three practice-based research projects reflect their diverse backgrounds and perspectives of the artists within the emerging field of mobile media, in an effort to define the new genre of mobile media aesthetics. Despite the different approaches towards working with mobile media, a shared original aesthetic emerges specific to the mob...

  19. Characteristics of Mobile Payment Procedures

    Kreyer, Nina; Pousttchi, Key; Turowski, Klaus

    2002-01-01

    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, ...

  20. Security Threats in Prepaid Mobile

    Arshiya Begum; Mohammed Tanveer Ali

    2013-01-01

    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 Gulf Countries. Prep...

  1. Application for monitoring mobiles batteries

    Ortega Parrado, Sergio

    2015-01-01

    [ANGLÈS] The master thesis focuses on the development of a monitoring system of mobile devices' batteries. The main achievement of the project is the implementation of a functional version of the monitoring system which retrieves information of the mobile device, synchronizes it with the server, processes the information and finally stores it on a server. The monitoring system consists mainly of two parts, which are the mobile application and the server. The mobile application (hereafter, app...

  2. The mobile devices and its mobile learning usage analysis

    Jacob, S. M.; Issac, B.

    2014-01-01

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

  3. Mobile wave how mobile intelligence will change everything

    Saylor, Michael

    2012-01-01

    In the tradition of international bestsellers, Future Shock and Megatrends, Michael J. Saylor, CEO of MicroStrategy, brings The Mobile Wave, a ground-breaking analysis of the impact of mobile intelligence-the fifth wave of computer technology.   The Mobile Wave argues that the changes brought by mobile computing are so big and widespread that it's impossible for us to see it all, even though we are all immersed in it. Saylor explains that the current generation of mobile smart phones and tablet computers has set the stage to become the universal computing platform for the world. In the hands o

  4. Telemedicine Based on Mobile Devices and Mobile Cloud Computing

    Lidong Wang

    2014-04-01

    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.

  5. Mobile Learning in Higher Education

    Fraga, Lucretia M.

    2012-01-01

    This mixed method research study investigated the beliefs of university faculty regarding mobile learning. As well as to determine if providing technology professional development to university faculty supports the increase of mobile learning opportunities in higher education. This study used the Beliefs About Mobile Learning Inventory (BAMLI) to

  6. Speech Recognition on Mobile Devices

    Tan, Zheng-Hua; Lindberg, Børge

    2010-01-01

    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 AS....... Applications within command and control, text entry and search are presented with an emphasis on mobile text entry....

  7. How Mobility Systems Produce Inequality

    Richardson, Tim; Jensen, Ole B.

    2008-01-01

    approach is illustrated in a case study of one urban transit system: the BTS Sky Train, Bangkok, Thailand. The analysis reveals the subtle hegemony of an elite mobility system that slowly becomes not only the ‘norm' but increasingly the desired mode of mobility, emphasising how mobile elites are...

  8. The Mobile Robot "Little Helper"

    Hvilshøj, Mads; Bøgh, Simon; Madsen, Ole; Kristiansen, Morten

    2009-01-01

    Increased customer needs and intensified global competition require intelligent and flexible automation. The interaction technology mobile robotics addresses this, so it holds great potential within the industry. This paper presents the concepts, ideas and working principles of the mobile robot...... this show promising results regarding industrial integration, exploitation and maturation of mobile robotics....

  9. Coulombic Effects in Ion Mobility Spectrometry

    Tolmachev, Aleksey V.; Clowers, Brian H.; Belov, Mikhail E.; Richard D Smith

    2009-01-01

    Ion mobility spectrometry (IMS) has been increasingly employed in a number of applications. When coupled to mass spectrometry (MS), IMS becomes a powerful analytical tool for separating complex samples and investigating molecular structure. Therefore, improvements in IMS-MS instrumentation, e.g. IMS resolving power and sensitivity, are highly desirable. Implementation of an ion trap for accumulation and pulsed ion injection to IMS based on the ion funnel has provided considerably increased io...

  10. The impact of mobile phones on the performance of university students

    khan, jangraiz; Khan Malik, Zilakat; Amin, Suleman

    2014-01-01

    This Paper concentrates on the impact of mobile phones on university students with special reference to University of Peshawar. A sample of 100 students was drawn from different departments of University of Peshawar for this purpose. The study used descriptive and quantitative tools for analysis. The results showed that almost 60% of the students got mobile phones from their parents. 42% of the students keep mobile phones for contacts with friends and society. Out of the sampled students, ...

  11. 5. Sampling

    The sampling is described for radionuclide X-ray fluorescence analysis. Aerosols are captured with various filter materials whose properties are summed up in the table. Fine dispersed solid and liquid particles and gaseous admixtures may be captured by bubbling air through a suitable absorption solution. The concentration of small amounts of impurities from large volumes of air is done by adsorbing impurities on surfactants, e.g., activated charcoal, silica gel, etc. Aerosols may be captured using an electrostatic precipitator and aerosol fractions may be separated with a cascade impactor. Water sampling differs by the water source, i.e., ground water, surface water, rain or waste water. Soil samples are taken by probes. (ES)

  12. Mobile Processes: Enhancing Cooperation in Distributed Mobile Environments

    Christian P. Kunze

    2007-02-01

    Full Text Available Currently, context awareness is one of the main trends in distributed mobile computing environments. Against this background, the demand for more complex – and additionally long-term – mobile applications increases continuously. Nevertheless, most current available mobile applications – as well as their supporting middleware platforms – are still relatively monolithic and closed systems, concentrating on only short-term activities. As a consequence, most present appliances are still restricted to rather simple tasks and are therefore rather insufficient for more complex ones which consist of sequences of related long-term activities tied together in respective application-oriented processes. In order to overcome the resource and capability restrictions of mobile environments, such application processes may profit from, e.g., cooperation between devices in the mobile vicinity – a fact which is hardly supported by existing systems. Therefore, this paper introduces a concept for integrating explicit support for mobile processes into mobile system infrastructures and for distributing their execution over different nodes in the network. Additionally, a corresponding middleware platform for context-aware and cooperative mobile applications is proposed. This framework has been designed and realized in the context of project DEMAC (Distributed Environment for Mobility-Aware Computing which supports such migrating processes and helps to execute them under the restrictions imposed by realistic mobile applications. In particular, this paper proposes a corresponding process description language and an execution model for such mobile (business processes.

  13. Mobile Multicast in Hierarchical Proxy Mobile IPV6

    Hafizah Mohd Aman, Azana; Hashim, Aisha Hassan A.; Mustafa, Amin; Abdullah, Khaizuran

    2013-12-01

    Mobile Internet Protocol Version 6 (MIPv6) environments have been developing very rapidly. Many challenges arise with the fast progress of MIPv6 technologies and its environment. Therefore the importance of improving the existing architecture and operations increases. One of the many challenges which need to be addressed is the need for performance improvement to support mobile multicast. Numerous approaches have been proposed to improve mobile multicast performance. This includes Context Transfer Protocol (CXTP), Hierarchical Mobile IPv6 (HMIPv6), Fast Mobile IPv6 (FMIPv6) and Proxy Mobile IPv6 (PMIPv6). This document describes multicast context transfer in hierarchical proxy mobile IPv6 (H-PMIPv6) to provide better multicasting performance in PMIPv6 domain.

  14. Dynamical sampling

    Aldroubi, A.; Cabrelli, C.; Molter, U.; Tang, S.

    2014-01-01

    Let Y={f(i), Af(i),..., A^{li} f(i): i in Omega}, where A is a bounded operator on l^2(I). The problem under consideration is to find necessary and sufficient conditions on A, Omega, {l_i:i in Omega} in order to recover any f \\in l^2(I) from the measurements Y. This is the so called dynamical sampling problem in which we seek to recover a function f by combining coarse samples of f and its futures states A^l f. We completely solve this problem in finite dimensional spaces, and for a large cla...

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

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

    2014-01-01

    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...

  16. Mobile Biomass Pelletizing System

    Thomas Mason

    2009-04-16

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

  17. Mobile Autonomous Humanoid Assistant

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

    2004-01-01

    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.

  18. Partnership networks and mobilization

    Maria Clara Aquino Bittencourt

    2013-12-01

    Full Text Available This review of the book @internet e #rua: ciberativismo e mobilização das redes sociais (The Internet and the Street: Cyber Activism and Mobilization in Social Networks, written by Fábio Malini and Henrique Antoun, exposes some of the main subjects approached in the text that develops over a historical background of the internet and the digital communication and information technologies. This brief tour of the two researchers’ work attempts to approximate the analysis of collaboration and partnership networks with the most recent practices of production, circulation and consumption of content in the context of the mobilizations that went from the social networks to the streets from Brazil. 

  19. MOBILIZING KNOWLEDGE IN DENMARK

    Holm, Claus

    2011-01-01

    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...... 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...... 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...

  20. Mobile nuclear power systems

    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)

  1. Social mobility and fertility

    Gianpiero Dalla Zuanna

    2007-12-01

    Full Text Available 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 areas of the developed world (mainly in southern European and eastern Asian countries. Therefore, the provocative idea of Ariès that in the rich world, the child-king has now been replaced by the couple-queen does not perfectly hold.

  2. Indigenization of Urban Mobility

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

    2014-01-01

    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.

  3. An Investigation of Initial Trust in Mobile Banking

    Fakhraddin Maroofi

    2013-09-01

    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.

  4. A study of malware detection on smart mobile devices

    Yu, Wei; Zhang, Hanlin; Xu, Guobin

    2013-05-01

    The growing in use of smart mobile devices for everyday applications has stimulated the spread of mobile malware, especially on popular mobile platforms. As a consequence, malware detection becomes ever more critical in sustaining the mobile market and providing a better user experience. In this paper, we review the existing malware and detection schemes. Using real-world malware samples with known signatures, we evaluate four popular commercial anti-virus tools and our data shows that these tools can achieve high detection accuracy. To deal with the new malware with unknown signatures, we study the anomaly based detection using decision tree algorithm. We evaluate the effectiveness of our detection scheme using malware and legitimate software samples. Our data shows that the detection scheme using decision tree can achieve a detection rate up to 90% and a false positive rate as low as 10%.

  5. The Mobile Csound platform

    Lazzarini, Victor; Yi, Steven; Timoney, Joseph; Keller, Damian; Pimenta, Marco

    2012-01-01

    This article discusses the development of the Mobile Csound Platform (MCP), a group of related projects that aim to provide support for sound synthesis and processing under various new environments. Csound is itself an established computer music system, derived from the MUSIC N paradigm, which allows various uses and applications through its Application Programming Interface (API). In the article, we discuss these uses and introduce the three environments under which the MCP is be...

  6. The Mobile Robot RHINO

    Buhmann, Joachim; Burgard, Wolfram; Cremers, Armin B.; Fox, Dieter; Hofmann, Thomas; Schneider, Frank E.; Strikos, Jiannis; Thrun, Sebastian

    1995-01-01

    Rhino was the University of Bonn's entry in the 1994 AAAI Robot Competition and Exhibition. rhino is a mobile robot designed for indoor navigation and manipulation tasks. The general scientific goal of the rhino project is the development and the analysis of autonomous and complex learning systems. This article briefly describes the major components of the rhino control software as they were exhibited at the competition. It also sketches the basic philosophy of the rhino architecture and disc...

  7. Mobile Project Management

    Boja, Catalin; Marius POPA

    2006-01-01

    Based on the development of new communication and data transfer technologies, the mobile solutions for the management process have been able to provide new ways to conduct management actions. This environment describes methods and tools available only here, which will bring information, speed and efficiency to any stage and component of the management process. The paper takes into discussion the impact of the technological development on the management process paradigm. The paper presents the...

  8. Lessons by mobile learning

    Lammeren, R.J.A., van

    2005-01-01

    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

  9. Mobile Music Listening Practices

    Detry, Lionel; Music, Digitisation, Mediation. Towards Interdisciplinary Music Studies

    2013-01-01

    This poster presents my PhD research about the appropriation of the practice of mobile music listening. Following an exploratory phase, I have described and interpreted some of the salient characteristics of that practice. It broadly shows that it is an automatic, background, unfocused listening used as an accompaniment to another activity. The music is therefore functional: it helps to relax, change mood, block unwanted sounds (or people), make non-places (Augé, 1992) more pleasant. This ban...

  10. Educational mobility during socialism

    Simonová, Natalie

    Brno : FSS MU, 2006, s. 1-29. [European Graduate School for Social Sciences: international seminar. Telč (CZ), 18.05.2006-21.05.2006] R&D Projects: GA ČR(CZ) GA403/06/1241 Institutional research plan: CEZ:AV0Z70280505 Keywords : education * mobility * inequality Subject RIV: AO - Sociology, Demography http:// web .fss.muni.cz/eusoc/EUSOC2_simonova_paper.pdf

  11. Mobility report 2011

    2011-01-01

    Following strong growth in the 1980s and 1990s, the total amount of national mobility among Dutch people has not increased since 2005. This especially applies to car use. Except for the credit crisis, the reasons for this remain unclear. Moreover, other western countries have had similar experiences.In 2010, economic recovery led to increased traffic congestion on the main road network. Traffic congestion, however, was less in 2011, partly as a result of road capacity enlargements. In recent ...

  12. Partnership networks and mobilization

    Maria Clara Aquino Bittencourt

    2013-01-01

    This review of the book @internet e #rua: ciberativismo e mobilização das redes sociais (The Internet and the Street: Cyber Activism and Mobilization in Social Networks), written by Fábio Malini and Henrique Antoun, exposes some of the main subjects approached in the text that develops over a historical background of the internet and the digital communication and information technologies. This brief tour of the two researchers’ work attempts to approximate the analysis of collaboration and pa...

  13. Solar mobile power supply

    Hu, Libian

    2014-01-01

    The solar mobile power supply is a comprehensive energy saving and environment protective product. Besides, it consists of solar panels, storage battery and controller as well as other important components. Based on the traditional solar charging circuit, this solar power supply combines the 5V USB interface and 12V adjustable circuit as well as the 220V inverter and power adapter to greatly improve the function of the power system.

  14. Eine Kategorisierung mobiler Applikationen

    Hildebrandt Andreas

    2012-01-01

    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 gewhlt werden. Die Wahl der am besten passenden dieser drei Kategorien ist nicht immer einfach und sollte im Vorfeld genau abgeklrt werden. In diesem Artikel zeigen wir die Eigenheiten dieser drei Kategorien auf und vergleichen sie miteinander anhand von Beispielen und einer fiktiven Ticketing-Applikation.

  15. Editorial: Mobile (March 2010)

    Thomas Kunz; Dru Lavigne; François Lefebvre

    2010-01-01

    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 I...

  16. Future Mobility Survey

    Cottrill, Caitlin; Pereira, Francisco; Zhao, Fang; Lim, Hock; Ben-Akiva, Moshe; Zegras, P. Christopher; Dias, Ines

    2013-01-01

    The Future Mobility Survey (FMS) is a smartphone-based prompted-recall travel survey that aims to support data collection initiatives for transport-modeling purposes. This paper details the considerations that have gone into the survey's development, including the smartphone apps for iPhone and Android platforms, the online activity diary and user interface, and the background intelligence for processing collected data into activity locations and travel traces. The various trade-offs concerni...

  17. Mobile analysis systems

    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)

  18. Mobile Remote Control Architecture

    George Stefan Bogdan

    2012-01-01

    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...

  19. Integrated mobile robot control

    Amidi, Omead; Thorpe, Charles

    1991-01-01

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

  20. Mobile soil washing system

    Cleaning contaminated soil is becoming more and more important in environmental protection. One economically viable and technically feasible method is washing soil contaminated with organic, metallic or radioactive substances. The effectiveness of the mobile technique has been demonstrated at the Bruni, Texas, uranium ore mine. The process combines physical and chemical separation processes, has a throughput of approx. 18 t/h, and attains a decontamination level of 99%. (orig.)

  1. Qualified Mobile Server Signature

    Orthacker, Clemens; Centner, Martin; Kittl, Christian

    2010-01-01

    A legal basis for the use of electronic signatures exists since the introduction of qualified electronic signatures in EU Directive 1999/ 93/EC. Although considered as key enablers for e-Government and e-Commerce, qualified electronic signatures are still not widely used. Introducing amobile component addresses most of the shortcomings of existing qualified signature approaches but poses certain difficulties in the security reasoning. The proposed server based mobile signature approach authen...

  2. Mobile signature service integration

    Venho, Joonas

    2012-01-01

    Tivoli Access Manager for e-business (TAMeb) is an IBM Security Systems product for single sign-on solutions (SSO) on the web. It is software for handling authentication and authorization issues and managing the security policies of application resources. In addition to normal authentication TAMeb provides an interface for external authentication. The recent appearance of mobile signature service in Finland, which was developed jointly by DNA, Elisa and Sonera, raised the question of whe...

  3. Mobile robot control system

    Jiruška, Jiří

    2015-01-01

    This thesis deals with differential drive wheeled mobile robot which is running under a real-time operating system. Introductory part is focused on theoretical description of robot and its original firmware. Practical part deals with creating software and implementation several methods that allow following the line by robot using reflectance sensor array. Significant part of this thesis is focused on design and implementation of communication protocol, based on IEEE 802.15.4 which provides co...

  4. Forensics mobile devices

    Milorad S. Markagić

    2013-01-01

    The article gives an overview of possibilities of digitized mobile(portable) devices, and methods of research data with them.Emphasis is placed on the forensic investigation of mobilephones, but are covered by other media and research for digitalprocessing, transmission and storage of information.A special emphasis was made on the software tools in carrying out the acquisition of digital data, with the aim of sending the reader on ways and methods to protect data but also knowledgewhich is th...

  5. Mobile devices tools and technologies

    Collins, Lauren

    2015-01-01

    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

  6. 33 CFR 165.835 - Security Zone; Port of Mobile, Mobile Ship Channel, Mobile, AL.

    2010-07-01

    ... definition covers passenger vessels that must comply with 33 CFR parts 120 and 128. (b) Location. The... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone; Port of Mobile, Mobile Ship Channel, Mobile, AL. 165.835 Section 165.835 Navigation and Navigable Waters COAST...

  7. Sampling methods

    Methods for the collection of soil samples to determine levels of 137Cs and other fallout radionuclides, such as excess 210Pb and 7Be, will depend on the purposes (aims) of the project, site and soil characteristics, analytical capacity, the total number of samples that can be analysed and the sample mass required. The latter two will depend partly on detector type and capabilities. A variety of field methods have been developed for different field conditions and circumstances over the past twenty years, many of them inherited or adapted from soil science and sedimentology. The use of them inherited or adapted from soil science and sedimentology. The use of 137Cs in erosion studies has been widely developed, while the application of fallout 210Pb and 7Be is still developing. Although it is possible to measure these nuclides simultaneously, it is common for experiments to designed around the use of 137Cs along. Caesium studies typically involve comparison of the inventories found at eroded or sedimentation sites with that of a 'reference' site. An accurate characterization of the depth distribution of these fallout nuclides is often required in order to apply and/or calibrate the conversion models. However, depending on the tracer involved, the depth distribution, and thus the sampling resolution required to define it, differs. For example, a depth resolution of 1 cm is often adequate when using 137Cs. However, fallout 210Pb and 7Be commonly has very strong surface maxima that decrease exponentially with depth, and fine depth increments are required at or close to the soil surface. Consequently, different depth incremental sampling methods are required when using different fallout radionuclides. Geomorphic investigations also frequently require determination of the depth-distribution of fallout nuclides on slopes and depositional sites as well as their total inventories

  8. Topographical Panoramic Imageproduction using Mobile Cloud

    ATHULYA AJAYAN

    2013-01-01

    Increasing usage of mobile computing, exploiting its full potential is difficult due to its inherent problems. The main problems are resource scarcity, frequent disconnections, battery problems and mobility. Mobile cloud computing can address the above problems by executing mobile applications on resource providers external to the mobile device. Mobile cloud computing aims to empower the mobile user by providing a high functionality, because of the resource limitations of mobiles. Here consid...

  9. Mobile Zigbee Sensor Networks

    Anantdeep, Er; Kaur, Er Balpreet

    2010-01-01

    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...

  10. Mobile 3D tomograph

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

  11. Consumer Attitude Toward Mobile Marketing in Bosnia and Herzegovina

    Irma Jasarspahic

    2014-08-01

    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.

  12. Mobile evaporator corrosion test results

    Rozeveld, A.; Chamberlain, D.B.

    1997-05-01

    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.

  13. Mobile evaporator corrosion test results

    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

  14. Mobility decline in old age

    Nilsson, C.J.; Siersma, V.; Mänty, Minna Regina; Avlund, K.; Vass, M.; Lund, R.

    2014-01-01

    BACKGROUND: Mobility-related fatigue and low socioeconomic position predicts mobility limitations and disability in old age, but the interplay between these two factors is unknown. To evaluate whether mobility-related fatigue is a stronger risk factor for mobility limitations in certain socioecon......BACKGROUND: Mobility-related fatigue and low socioeconomic position predicts mobility limitations and disability in old age, but the interplay between these two factors is unknown. To evaluate whether mobility-related fatigue is a stronger risk factor for mobility limitations in certain...... estimating equations were performed using four waves of data on 2874 individuals without mobility limitations at baseline from The Danish Intervention Study on Preventive Home Visits. RESULTS: Low socioeconomic position and mobility-related fatigue are risk factors for mobility limitations in old age. The...... those with concomitant exposure to low socioeconomic position, compared with those with high socioeconomic position. Preventive strategies must focus on vulnerable groups of older people with low socioeconomic position as well as on individuals with fatigue....

  15. Privacy issues in mobile advertising

    Cleff, Evelyne Beatrix

    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......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...... 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...

  16. Privacy issues in mobile advertising

    Cleff, Evelyne Beatrix

    2007-01-01

    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......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...... 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...

  17. Linking migration, mobility and HIV.

    Deane, Kevin D; Parkhurst, Justin O; Johnston, Deborah

    2010-12-01

    Population mobility is commonly identified as a key driver of the HIV epidemic, both linking geographically separate epidemics and intensifying transmission through inducing riskier sexual behaviours. However, beyond the well-known case studies of South African miners and East African truck drivers, the evidence on the links between HIV and mobility is nuanced, contradictory and inconclusive and is in part attributed to the abstract definitions of mobility used in different studies. This problematic conception of mobility, with no reference to who moves, their motivations for moving, or the characteristics of sending and receiving areas, can have a dramatic impact on how one understands the influence which this structural factor has on HIV risk in different settings. Future research on mobility and HIV transmission must incorporate an understanding of migration and mobility as dynamic processes and link different patterns and forms of mobility with location-specific sexual networks and HIV epidemiology. PMID:20958895

  18. Occupational participation through community mobility among older men and women

    Fristedt, Sofi

    2012-01-01

    The overall aim of the present thesis was to explore and characterise occupational participation and community mobility from an occupational perspective of health and well-being, and to elucidate potential barriers and facilitators for occupational participation and community mobility in older men and women. In Study I, questionnaires were sent to a sample of older citizens (75+) in three Swedish mid-sized municipalities. This survey focused on actual and preferred travel opportunities and wa...

  19. Worker mobility, displacement, redeployment and wage dynamics in Italy

    Contini, Bruno; VILLOSIO, Claudia

    2007-01-01

    We investigate various stylized facts on wage growth, labor mobility and firm size, to date unexplored in Italy. Using a wage decomposition that allows to separate individual premiums from firm-effects, we ascertain: (1) whether movers are better off than stayers; (2) whether firm size affects the outcome of workers' mobility across; and (3) the extent to which did job displacement and redeployment inflict wage losses to downsized workers. The sample - a closed panel of full-time male employe...

  20. Exploring the Potential of Mobile Learning Use Among Faculty Members

    Mansour A Alwraikat; Hiam Al Tokhaim

    2014-01-01

    The purpose of this study was to investigate faculty members' attitudes toward mobile learning in King Saud University. The sample of the study consisted of 362 faculty members from King Saud University in Saudi Arabia during the academic year 2012-2013. A questionnaire consisted of 37 items was developed to measure the attitudes. The results showed that the attitudes of faculty members towards mobile learning are positive and there are statistically significant differences attributed to gend...

  1. Mobile Phone Use Behaviors and Postures on Public Transportation Systems

    Liang, Huey-Wen; Hwang, Yaw-Huei

    2016-01-01

    Mobile phones are common in our daily life, but the users’ preferences for postures or screen operating styles have not been studied. This was a cross-sectional and observational study. We randomly sampled passengers who used mobile phones on the Mass Rapid Transit (MRT) system in metropolitan Taipei. A checklist was used to observe their body postures and screen operating styles while sitting or standing. As a result, 1,230 subjects from 400 trips were observed. Overall, of all the passenger...

  2. Creation of a mobile intervention group

    This document presents the different missions and equipment of the Mobile Intervention Group which is supposed to intervene on a site of accident involving radioactive products. The authors indicate the various missions inside and outside a nuclear centre, the vehicles (with a laboratory, a decontamination set, an intervention vehicle for four persons, a liaison vehicle), the intervention equipment, the control and sampling equipment (samplers, counters), the analysis equipment, and the personnel (engineer, chemist, electronics technician, drivers, decontamination agents, sampling agents). They describe the alert procedure and the successive operations

  3. Residential mobility, well-being, and mortality.

    Oishi, Shigehiro; Schimmack, Ulrich

    2010-06-01

    We tested the relation between residential mobility and well-being in a sample of 7,108 American adults who were followed for 10 years. The more residential moves participants had experienced as children, the lower the levels of well-being as adults. As predicted, however, the negative association between the number of residential moves and well-being was observed among introverts but not among extraverts. We further demonstrated that the negative association between residential mobility and well-being among introverts was explained by the relative lack of close social relationships. Finally, we found that introverts who had moved frequently as children were more likely to have died during the 10-year follow-up. Among extraverts, childhood residential mobility was unrelated to their mortality risk as adults. These findings indicate that residential moves can be a risk factor for introverts and that extraversion can be an interpersonal resource for social relationships and well-being in mobile societies. PMID:20515253

  4. Laboratory experiments in mobile robot navigation

    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

  5. Securing mobile code.

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

    2004-10-01

    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.

  6. Mobile Governance - An Indian Perspective

    ponasanapalli sree sudha

    2011-08-01

    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-governances 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.

  7. Developing Mobile Collaborative Learning Applications for Mobile Users

    Kwang B Lee

    2011-10-01

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

  8. Use of mobile phone data to estimate visitors mobility flows

    Gabrielli, Lorenzo; Furletti, Barbara; GIANNOTTI, Fosca; Nanni, Mirco; Rinzivillo, Salvatore

    2015-01-01

    Big Data originating from the digital breadcrumbs of human activities, sensed as by-product of the technologies that we use for our daily activities, allows us to observe the individual and collective behavior of people at an unprecedented detail. Many dimensions of our social life have big data "proxies", such as the mobile calls data for mobility. In this paper we investigate to what extent data coming from mobile operators could be a support in producing reliable and timely estimates of in...

  9. Industrial Mobile Application Design and Development : Transformer Monitoring Mobile Application

    Liu, Jing

    2013-01-01

    This thesis shows how mobile communication and information technology can be used on power industry domain. More specifically, the goal of this thesis is to design and develop a software concept demonstrator that gives operators a better possibility to check the status on ABB high voltage products, utilizing mobile devices, such as mobile phones and tablets. At the beginning of this thesis, user study and information gathering was conducted at ABB Corporate Research Center, Västerås, Sweden a...

  10. A wireless potentiostat for mobile chemical sensing and biosensing.

    Steinberg, Matthew D; Kassal, Petar; Kereković, Irena; Steinberg, Ivana Murković

    2015-10-01

    Wireless chemical sensors are used as analytical devices in homeland defence, home-based healthcare, food logistics and more generally for the Sensor Internet of Things (SIoT). Presented here is a battery-powered and highly portable credit-card size potentiostat that is suitable for performing mobile and wearable amperometric electrochemical measurements with seamless wireless data transfer to mobile computing devices. The mobile electrochemical analytical system has been evaluated in the laboratory with a model redox system - the reduction of hexacyanoferrate(III) - and also with commercially available enzymatic blood-glucose test-strips. The potentiostat communicates wirelessly with mobile devices such as tablets or Smartphones by near-field communication (NFC) or with personal computers by radio-frequency identification (RFID), and thus provides a solution to the 'missing link' in connectivity that often exists between low-cost mobile and wearable chemical sensors and ubiquitous mobile computing products. The mobile potentiostat has been evaluated in the laboratory with a set of proof-of-concept experiments, and its analytical performance compared with a commercial laboratory potentiostat (R(2)=0.9999). These first experimental results demonstrate the functionality of the wireless potentiostat and suggest that the device could be suitable for wearable and point-of-sample analytical measurements. We conclude that the wireless potentiostat could contribute significantly to the advancement of mobile chemical sensor research and adoption, in particular for wearable sensors in healthcare and sport physiology, for wound monitoring and in mobile point-of-sample diagnostics as well as more generally as a part of the Sensor Internet of Things. PMID:26078146

  11. Mobile Intelligent Autonomous Systems

    Jitendra R. Raol

    2010-01-01

    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

  12. Humanoid Mobile Manipulation Using Controller Refinement

    Platt, Robert; Burridge, Robert; Diftler, Myron; Graf, Jodi; Goza, Mike; Huber, Eric; Brock, Oliver

    2006-01-01

    An important class of mobile manipulation problems are move-to-grasp problems where a mobile robot must navigate to and pick up an object. One of the distinguishing features of this class of tasks is its coarse-to-fine structure. Near the beginning of the task, the robot can only sense the target object coarsely or indirectly and make gross motion toward the object. However, after the robot has located and approached the object, the robot must finely control its grasping contacts using precise visual and haptic feedback. This paper proposes that move-to-grasp problems are naturally solved by a sequence of controllers that iteratively refines what ultimately becomes the final solution. This paper introduces the notion of a refining sequence of controllers and characterizes this type of solution. The approach is demonstrated in a move-to-grasp task where Robonaut, the NASA/JSC dexterous humanoid, is mounted on a mobile base and navigates to and picks up a geological sample box. In a series of tests, it is shown that a refining sequence of controllers decreases variance in robot configuration relative to the sample box until a successful grasp has been achieved.

  13. Mobile Design Pattern Gallery UI Patterns for Mobile Applications

    Neil, Theresa

    2012-01-01

    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

  14. User-oriented Mobile Filesystem Middleware for Mobile Cloud Systems

    Dongbo Liu

    2013-09-01

    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.

  15. Wireless Cellular Mobile Communications

    V. Zalud

    2002-12-01

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

  16. Principles of mobile communication

    Stber, Gordon L

    2007-01-01

    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

  17. Differential mobility in plasm

    Theoretical considerations about the technique based on differential plasma mobility are made for the analysis of trace amounts of chemical products. The mechanisms for the formation of reagent-ion, reaction between ion and molecule, separation of ions and molecules and production of plasmogram, are explained. Despite being a very modern technique and the equipment has not yet been put in the market, it is already confirmed that the structural sensitivity of the fluctuation time in DPM is greater than the retention time in chromatographic techniques. (CLB)

  18. Semantics in mobile sensing

    Yan, Zhixian

    2014-01-01

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

  19. Location and daily mobility

    Engebretsen, Øystein

    2005-01-01

    The aim of this paper is to discuss the interaction of location and daily mobility in cities. According to previous research the length of daily travel and the amount of car use in cities are influenced by urban density and residential location, thus focusing on urban sprawl as one of the main challenges for sustainable urban planning. However, during the last 10-15 years it has been more popular to settle in the inner city areas of Norwegian cities. This re-urbanisation has resulted in a sta...

  20. Trauma and Mobile Radiography

    Trauma and Mobile Radiography focuses on the radiography of trauma patients and of patients confined to bed. This book offers students a foundation in the skills they need to produce quality radiograms without causing additional injury or pain to the patient. Features of this new book include: coverage of the basics of radiography and patient care, including monitoring of heavily sedated, immobile, and accident patients. Information on the injuries associated with certain types of accidents, and methods for dealing with these problems. Detailed explanation of the positioning of each anatomical area. A Quick Reference Card with information on evaluating, monitoring and radiographing trauma patients