WorldWideScience

Sample records for mobile direct-reading sampling

  1. Comparison of fine particle measurements from a direct-reading instrument and a gravimetric sampling method.

    Science.gov (United States)

    Kim, Jee Young; Magari, Shannon R; Herrick, Robert F; Smith, Thomas J; Christiani, David C

    2004-11-01

    Particulate air pollution, specifically the fine particle fraction (PM2.5), has been associated with increased cardiopulmonary morbidity and mortality in general population studies. Occupational exposure to fine particulate matter can exceed ambient levels by a large factor. Due to increased interest in the health effects of particulate matter, many particle sampling methods have been developed In this study, two such measurement methods were used simultaneously and compared. PM2.5 was sampled using a filter-based gravimetric sampling method and a direct-reading instrument, the TSI Inc. model 8520 DUSTTRAK aerosol monitor. Both sampling methods were used to determine the PM2.5 exposure in a group of boilermakers exposed to welding fumes and residual fuel oil ash. The geometric mean PM2.5 concentration was 0.30 mg/m3 (GSD 3.25) and 0.31 mg/m3 (GSD 2.90)from the DUSTTRAK and gravimetric method, respectively. The Spearman rank correlation coefficient for the gravimetric and DUSTTRAK PM2.5 concentrations was 0.68. Linear regression models indicated that log, DUSTTRAK PM2.5 concentrations significantly predicted loge gravimetric PM2.5 concentrations (p DUSTTRAK and log, gravimetric PM2.5 concentrations was found to be modified by surrogate measures for seasonal variation and type of aerosol. PM2.5 measurements from the DUSTTRAK are well correlated and highly predictive of measurements from the gravimetric sampling method for the aerosols in these work environments. However, results from this study suggest that aerosol particle characteristics may affect the relationship between the gravimetric and DUSTTRAK PM2.5 measurements. Recalibration of the DUSTTRAK for the specific aerosol, as recommended by the manufacturer, may be necessary to produce valid measures of airborne particulate matter. PMID:15673091

  2. Direct reading dosimeter

    International Nuclear Information System (INIS)

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

  3. Direct reading spectrochemical analysis of nuclear graphite

    International Nuclear Information System (INIS)

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

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

    International Nuclear Information System (INIS)

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

  5. On Optimal Sampling Trajectories for Mobile Sensing

    OpenAIRE

    Unnikrishnan, Jayakrishnan; Vetterli, Martin

    2013-01-01

    We study the design of sampling trajectories for stable sampling and reconstruction of bandlimited spatial fields using mobile sensors. As a performance metric we use the path density of a set of sampling trajectories, defined as the total distance traveled by the moving sensors per unit spatial volume of the spatial region being monitored. We obtain new results for the problem of designing stable sampling trajectories with minimal path density, that admit perfect reconstruction of bandlimite...

  6. Mobile Variable Depth Sampling System Design Study

    Energy Technology Data Exchange (ETDEWEB)

    BOGER, R.M.

    2000-08-25

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

  7. Mobile Variable Depth Sampling System Design Study

    International Nuclear Information System (INIS)

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

  8. Analytical laboratory and mobile sampling platform

    International Nuclear Information System (INIS)

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

  9. Direct reading fast microwave interferometer for ELMO Bumpy Torus

    International Nuclear Information System (INIS)

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

  10. Value of information and mobility constraints for sampling with mobile sensors

    OpenAIRE

    Ballari, D. E.; Bruin, S.; Bregt, A. K.

    2012-01-01

    Wireless sensor networks (WSNs) play a vital role in environmental monitoring. Advances in mobile sensors offer new opportunities to improve phenomenon predictions by adapting spatial sampling to local variability. Two issues are relevant: which location should be sampled and which mobile sensor should move to do it? This paper proposes a form of adaptive sampling by mobile sensors according to the expected value of information (EVoI) and mobility constraints. EVoI allows decisions to be made...

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

    International Nuclear Information System (INIS)

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

  12. Stable arrangements of mobile sensors for sampling physical fields

    OpenAIRE

    Kumar, Sumeet; Deshpande, Ajay; Sarma, Sanjay Emani

    2011-01-01

    Today's wireless sensor nodes can be easily attached to mobile platforms such as robots, cars and cell phones enabling pervasive sensing of physical fields (say of temperature, vibrations, air quality and chemicals). We address the sensor arrangement problem, i.e. when and where sensors should take samples to obtain a good estimate of a field using mobile sensors. In particular, we focus on incidentally mobile sensors that move passively under the influence of the environment (e.g. sensors at...

  13. Performance test of SAUNA xenon mobile sampling system

    International Nuclear Information System (INIS)

    In this article, the structure and basic functions of SAUNA noble gas xenon mobile sampling system are introduced. The sampling capability of this system is about 2.2 mL per day, as a result from a 684-h operation. The system can be transported to designated locations conveniently to collect xenon sample for routine or emergency environment monitoring. (authors)

  14. Value of information and mobility constraints for sampling with mobile sensors

    Science.gov (United States)

    Ballari, Daniela; de Bruin, Sytze; Bregt, Arnold K.

    2012-12-01

    Wireless sensor networks (WSNs) play a vital role in environmental monitoring. Advances in mobile sensors offer new opportunities to improve phenomenon predictions by adapting spatial sampling to local variability. Two issues are relevant: which location should be sampled and which mobile sensor should move to do it? This paper proposes a form of adaptive sampling by mobile sensors according to the expected value of information (EVoI) and mobility constraints. EVoI allows decisions to be made about the location to observe. It minimises the expected costs of wrong predictions about a phenomenon using a spatially aggregated EVoI criterion. Mobility constraints allow decisions to be made about which sensor to move. A cost-distance criterion is used to minimise unwanted effects of sensor mobility on the WSN itself, such as energy depletion. We implemented our approach using a synthetic data set, representing a typical monitoring scenario with heterogeneous mobile sensors. To assess the method, it was compared with a random selection of sample locations. The results demonstrate that EVoI enables selecting the most informative locations, while mobility constraints provide the needed context for sensor selection. This paper therefore provides insights about how sensor mobility can be efficiently managed to improve knowledge about a monitored phenomenon.

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

    OpenAIRE

    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

  16. Experience-Sampling Methodology with a Mobile Device in Fibromyalgia

    OpenAIRE

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

    2012-01-01

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

  17. EFFICIENT DATA AGGREGATION FOR MOBILE SAMPLING IN WIRELESS SENSOR NETWORKS

    OpenAIRE

    Sivakumar, K.; Ravichandran, Dr T.

    2012-01-01

    Mobile objects can be used to gather samples from a sensor field. Civilian vehicles or even human beings equipped with proper wireless communication devices can be used as mobile sinks that retrieve sensor-data from sampling points within a large sensor field. A key challenge is how to gather the sensor data in a manner that is energy efficient with respect to the sensor nodes that serve as sources of the sensor data. In this paper, an algorithmic technique called Band-based Directional Broad...

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

    International Nuclear Information System (INIS)

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

  19. Sampling and reconstructing spatial fields using mobile sensors

    OpenAIRE

    Unnikrishnan, Jayakrishnan; Vetterli, Martin

    2012-01-01

    The classical approach to sampling time-invariant spatial fields uses static sensors distributed over space. We study a new approach involving mobile sensors that move through space measuring the field values along their paths. A single moving sensor can take measurements over a wide spatial area thus acting as a substitute for a potentially large number of static sensors. A moving sensor encounters the spatial field in its path in the form of a time-domain signal. Hence a time-domain anti-al...

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

    Science.gov (United States)

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

    2015-07-01

    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

  1. Direct-reading spectrochemical analysis of magnesium alloys

    International Nuclear Information System (INIS)

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

  2. Application of an inductively coupled plasma/direct reading polychromator to the multielement analysis of natural waters

    International Nuclear Information System (INIS)

    The Uranium Resource Evaluation Program requires the multielement analysis of a large number of stream and ground water samples. Inductively coupled plasma-optical emission spectrometry is the most viable technique presently available to the analytical chemist to meet the sample throughput rates required by this program. A commercially available inductively coupled plasma-direct reading polychromator has been successfully implemented into the analytical portion of this program. Several modifications which were required to further automate the standard commercial instrument will be described. The problems encountered in ultratrace analysis which arise from shifts in the spectral background produced by stray light, line broadening, and radiative recombination have been adequately documented. An evaluation of the degree of compensation produced by the background correction system supplied by the instrument manufacturer is presented. Several additional problems encountered in the automated analysis of natural water samples are discussed. Effective or at least partially effective solutions to these problems are described

  3. Industrial Component-based Sample Mobile Robot System

    OpenAIRE

    Péter Kucsera

    2007-01-01

    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...

  4. Sampling mobile opinion: A contextual postcard questionnaire study

    OpenAIRE

    Axup, Jeff; Viller, Stephen

    2006-01-01

    Understanding requirements of mobile communities is challenging because of their geographical distribution and frequent movement. We present a study of backpackers travelling in Australia which utilizes a research method called contextual postcard questionnaires. The method uses brief, open–ended questions to solicit contextual responses from backpackers that are relevant for development of tourism and mobile communication technologies. Eight hundred postcards were distributed via hoste...

  5. Industrial Component-based Sample Mobile Robot System

    Directory of Open Access Journals (Sweden)

    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.

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

    International Nuclear Information System (INIS)

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

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

    International Nuclear Information System (INIS)

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

  8. Mobile field sampling system for determining submicron aerosol size distributions

    International Nuclear Information System (INIS)

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

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

    Directory of Open Access Journals (Sweden)

    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

  10. Adaptive sampling for learning gaussian processes using mobile sensor networks.

    Science.gov (United States)

    Xu, Yunfei; Choi, Jongeun

    2011-01-01

    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. PMID:22163785

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

    Directory of Open Access Journals (Sweden)

    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.

  12. 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...

  13. The Nexus between Direct Reading Instruction, Reading Theoretical Perspectives, and Pedagogical Practices of University of Swaziland Bachelor of Education Students

    Science.gov (United States)

    Sibanda, Jabulani

    2010-01-01

    The present study investigated the influence direct reading instruction had on university student teachers' reading cognition and the influence their theoretical perspectives had on their pedagogical practices. The study was conducted on all the seven year 2 (2008) Bachelor of Education (primary) students at the University of Swaziland.…

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

    Energy Technology Data Exchange (ETDEWEB)

    Shaw, K.R.

    1993-07-01

    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.

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

    Scientific Electronic Library Online (English)

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

    2005-09-01

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

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

    International Nuclear Information System (INIS)

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

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

    Science.gov (United States)

    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.

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

    International Nuclear Information System (INIS)

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

  19. Sampling Urban Mobility through On-line Repositories of GPS Tracks

    OpenAIRE

    Piorkowski, Michal

    2009-01-01

    We analyze urban mobility by relying on the short-term mobility traces gathered from a publicly available web-based repository of GPS tracks - the Nokia Sports Tracker service. All mobility traces are obtained from a set of kml files. We show how the data collected voluntarily by individuals, equipped with GPS-enabled mobile phones, can be used to infer accurate, large-scale footprint of urban mobility. This method, unlike others - for example, personal interviewing, is more scalable and less...

  20. A comparison of two direct-reading aerosol monitors with the federal reference method for PM 2.5 in indoor air

    Science.gov (United States)

    Yanosky, Jeff D.; Williams, Phillip L.; MacIntosh, David L.

    Two types of direct-reading aerosol monitoring devices, the TSI, Inc. Model 3320 Aerodynamic Particle Sizer (APS), and the TSI, Inc. Model 8520 DustTrak Aerosol Monitor (DustTrak), were collocated indoors with a US EPA designated Federal Reference Method (FRM) PM 2.5 sampler, the BGI, Inc. PQ200, to assess the comparability of the sampling methods. Simultaneous 24-h samples were collected from two APS instruments, one DustTrak and one FRM sampler for 20 sample periods. The 30-min average concentrations during the 24-hour sample periods were also logged and compared for the APS and DustTrak. Statistical analysis on the mass concentrations obtained from each sampler type included paired t-tests and linear regression. The 24-h average PM 2.5 levels from the FRM samplers were approximately normally distributed and ranged from 5.0 to 20.4 ?g m -3 with mean and standard deviation 11.4 and 4.0 ?g m -3, respectively. The 24-h average DustTrak levels are well correlated with FRM levels ( R2=0.859) but show significant proportional bias ( ?1=2.57, pDustTrak provides precise measurements of PM 2.5, the accuracy of the measurements compared to the FRM can be improved through statistical adjustment. In contrast, APS PM 2.5 measurements are less precise and less accurate compared to the FRM and therefore results from the APS should be interpreted with caution.

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

    DEFF Research Database (Denmark)

    HovmØller, M.S.; Munk, L.

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

  2. Mobilities

    DEFF Research Database (Denmark)

    2015-01-01

    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-of-the-art reference work for all students and scholars with an interest in the ‘mobilities turn’ and its contributions to a deeper understanding of the contemporary and mobile world. The entries chosen all are amongst the most creative, thought provoking, and thoughtful of this diverse field of analysis and thought. The selection will cover diverse topics such as theories, concepts, methods, and approaches as well as it will explore various modes of mobilities and the relationship to everyday life practices. The selection also covers the ‘politics of mobilities’ from local urban planning schemes to geopolitical issues of refugees and environmental degradation. The spaces and territories marked by mobilities as well as the sites marked by the bypassing of such are explored. Moreover, the architectural and technological dimensions to infrastructures and sites of mobilities will be included as well as the issues of power, social exclusion, consumption, surveillance and mobilities history to mention some of the many themes covered by this reference work. This new title will focus on the academic contributions to this understanding by primarily focusing on works and publications in the aftermath of the seminal book and landmark text ‘Sociology Beyond Societies. Mobilities for the 21th Century’ by John Urry (Routledge, 2000) which in many ways have worked as the starting point for the ‘mobilities turn’. However, the issue of earlier ‘foundations’ will be addressed as a point of departure as will relevant works falling before Urry’s landmark text in order to avoid a too rigid line of historical demarcation.

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

    International Nuclear Information System (INIS)

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

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

    International Nuclear Information System (INIS)

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

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

    OpenAIRE

    Iqbal, Zafar; Eriksson, Mats

    2013-01-01

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

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

    International Nuclear Information System (INIS)

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

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

    OpenAIRE

    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 ...

  8. Inkjet-printed bioassays for direct reading with a multimode DVD/Blu-Ray optical drive.

    Science.gov (United States)

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

    2014-09-16

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

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

    Directory of Open Access Journals (Sweden)

    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.

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

    Directory of Open Access Journals (Sweden)

    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.

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

    Science.gov (United States)

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

    2014-10-16

    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

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

    Science.gov (United States)

    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.

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

    International Nuclear Information System (INIS)

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

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

    Directory of Open Access Journals (Sweden)

    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.

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

    Scientific Electronic Library Online (English)

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

    2011-06-01

    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.

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

    International Nuclear Information System (INIS)

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

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

    Science.gov (United States)

    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.

  18. Sampling

    CERN Document Server

    Thompson, Steven K

    2012-01-01

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

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

    International Nuclear Information System (INIS)

    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. An introduction to the technique of combined ion mobility spectrometry-mass spectrometry for the analysis of complex biological samples

    International Nuclear Information System (INIS)

    Full Text: Ultra Performance Liquid Chromatography (UPLC) offers several advantages compared with conventional High Performance Liquid Chromatography (HPLC) as an 'inlet system' for mass spectrometry. UPLC provides improved chromatographic resolution, increased sensitivity and reduced analysis time. This is achieved through the use of sub 2?m particles (stationary phase) combined with high-pressure solvent delivery (up to 15,000 psi). When coupled with orthogonal acceleration time-of-flight (oa-TOF) mass spectrometry (MS), UPLC presents a means to achieve high sample throughput with reduced spectral overlap, increased sensitivity, and exact mass measurement capabilities with high mass spectral resolution (Ca 20,000 FWHM). Dispersive ion mobility spectrometry (IMS) implemented within a traveling-wave ion guide provides an orthogonal separation strategy for ions in the gas phase that can resolve isobaric ions formed by either Electrospray of MALDI ionization typically in Ca 20 mille seconds. All three techniques have the potential to be combined on-line (e.g. UPLC-IMS-MS/MS) in real time to maximize peak capacity and resolving power for the analysis of complex biological mixtures including; intact proteins, modified peptides and endogenous/exogenous metabolites

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

    International Nuclear Information System (INIS)

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

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

    Science.gov (United States)

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

    2003-04-01

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

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

    Directory of Open Access Journals (Sweden)

    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.

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

    Science.gov (United States)

    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

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

    Energy Technology Data Exchange (ETDEWEB)

    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.

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

    Science.gov (United States)

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

  7. Headspace-solid phase microextraction of selenium(IV) from human blood and water samples using polypyrrole film and analysis with ion mobility spectrometry.

    Science.gov (United States)

    Shahdousti, Parvin; Alizadeh, Naader

    2011-01-17

    Headspace-solid phase microextraction (HS-SPME) with a polypyrrole (PPy)-coated fiber was applied as a sample preparation method for determination of selenite [Se(IV)] following derivatization with 1,2-diaminobenzene to convert into the piaselenol form and analysis by ion mobility spectrometry (IMS). The HS-SPME-IMS method presents good repeatability (RSDs <6%), simplicity, good sensitivity and short analysis times. The influence of the various analytical parameters on microextraction procedure, i.e. ligand concentration, pH, ionic strength, equilibrium time and temperature has been evaluated and optimized. The calibration graph was linear in the range of 20-320 ng mL(-1) with a detection limit of 12 ng mL(-1). The method was applied for determination of selenium in human serum and environmental surface water samples with satisfactory recovery. PMID:21167986

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

    International Nuclear Information System (INIS)

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

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

    Science.gov (United States)

    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.

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

    International Nuclear Information System (INIS)

    Document available in extended abstract form only. In environmental studies, Natural Organic Matter (NOM) plays a key role on the bioavailability and the toxicity of metallic compounds. If one wants to evaluate the mobility of heavy metals / radionuclides, which is in natura in most of the cases dependant on their interactions with NOM. One part of the organic inventory in the Callovo-Oxfordian formation (COx) exists as small dissolved compounds in the pore water but the weak content and the weak porosity of the formation (? 8 % of water in weight) make the complexation study with metal ions difficult. One part of the organic matter attached to the sediment (? 1 % in weight) can be mobilized in a synthetic pore water 1 and can be considered as similar to in situ pore water dissolved organic matter (DOM) regarding its size distribution. The collection of clay pore water has been done through percolation experiment, a unique and original experimental process developed to get pore water from a core sample,that have been described previously. From these experiments, it was shown that mobile organic matter concentration could reach 0.01 mol C/L by application of a pressure gradient up to 100 bars. Since part of the OM from the COx is known to be sensitive to air oxidation, the characterization and quantification of DOM were then performed under anoxic conditions (about - 170 mV vs Standard Hydrogen Electrode SHE). In addition, the chemical composition of NOM contained chemical composition of NOM contained in the pore water from the argillite clay rock has been determined in in-situ like conditions by ESI-MS and APCI-MS, which are suitable techniques to identify the chemical composition of NOM contained in the COx pore water available from boreholes. Mostly low molecular weight molecules were identified, of whom structural features observed were mainly acidic compounds, fatty acids as well as aldehydes and amino acids. Fulvic and Humic Acids have such low concentrations in the COx formation, leading to a probable low velocity, that the inventory was focused on the small organic molecules. The influence of the sampling was studied, notably by performing an experiment in which the argillite core sample was squeezed for 28 days at 175 MPa. The initial water content of the sample was 5.3% and the concentration of organic matter XX mol C/L. The structural features observed for the DOM were different from the percolated water samples either obtained in situ from the POX 1601 borehole or in lab from EST 34399 cores than for the squeezed water sample. The influence of the water collection will be discussed. Additionally, a part of organic matter can be extracted and isolated by HCl/HF treatment. This corresponds to the kerogen fraction which is insoluble in the pore water. 150 Myears solid-bound organic matter of the COx has been already investigated in several studies and originates from a mixture of marine and terrestrial sources. In addition to this, the CCl4 soluble organic fraction (bitumen) has been already characterized by liquid and gas chromatography coupled to mass spectrometry. And finally, a small fraction of the kerogen can be mobilized under alkaline conditions from the COx, a scenario which could happen at the COx/cement interface. This fraction (approx. 0,002 mol C/L) could be transported in the pore water and has been characterized to contain small molecules with carboxylic and phenolic groups. Nonetheless, in order to predict the speciation of metals and radionuclides for a given scenario, Dissolved Organic Matter (DOM) either in the pore water or that could be mobilized from the kerogen fraction must be supported by quantitative data. Thus, the present study is focused the quantification of these low molecular weight compounds using mass spectrometry. Several simple, sensitive, and reproducible methods of quantification, such as internal calibration, calibrated addition of external standard or sequential tandem mass spectrometry, have been developed and are discussed in this paper, mainly focused on acidic compo

  11. Staging Mobilities / Designing Mobilities

    DEFF Research Database (Denmark)

    Jensen, Ole B.

    2015-01-01

    In recent years, urban research has taken a ‘mobilities turn’. There has been a developing realisation that mobilities do not ‘just happen.’ Mobilities are carefully and meticulously designed, planned and staged (from above). However, they are equally importantly acted out, performed and lived as people are ‘staging themselves’ (from below). Staging mobilities is a dynamic process between ‘being staged’ (for example, being stopped at traffic lights) and the ‘mobile staging’ of interacting individuals (negotiating a passage on the pavement). Staging mobilities is about the fact that mobility is more than movement between point A and B. It explores how the movement of people, goods, information, and signs influences human understandings of self, other and the built environment. Moving towards a new understanding of the relationship between movement, interaction and environments, the project asks: what are the physical, social, technical, and cultural conditions to the staging of contemporary urban mobilities? The theoretical framing in the Staging mobilities book is applied to four in-depth cases in the accompanying volume Designing mobilities.This book explore how places, sites, and systems 'hosting' these multiple and complex mobilities are designed and how they are staging these in terms of their physical layout. By analysing specific cases of ‘mobilities design’ related to the four modes of moving; Walk, Bike, Train, and Car, the book uncover important and until now neglected 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 ‘mobilities design’. The dissertation is published in two volumes: Jensen, O. B. (2013) Staging Mobilities, London: Routledge and Jensen, O. B. (2014) Designing Mobilities, Aalborg: Aalborg University Press.

  12. Conceptualising mobility

    OpenAIRE

    Deschryvere, Matthias

    2010-01-01

    The information on the impact of mobility on society is plenty but scattered. A good understanding of the impact of mobility requires first an understanding of what mobility actually means. This paper lists aspects of mobility that can contribute to a useful conceptualisation. It is found that in its core mobility is about connectivity of individuals. In addition mobility is more than just geographical mobility of human interactions. Mobility also has important temporal and contextual dimensi...

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

    OpenAIRE

    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...

  14. Mobile units to hydro geochemistry characterization

    International Nuclear Information System (INIS)

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

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

    Science.gov (United States)

    Crawford, C L; Hill, H H

    2013-09-17

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

  16. Mobile Phones, Financial Inclusion, and Growth

    OpenAIRE

    Mihasonirina Andrianaivo; Kangni Kpodar

    2012-01-01

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

  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).

    Science.gov (United States)

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

    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

  18. The Deterioration and Mobilization Effects of Trauma on Social Support: Childhood Maltreatment and Adulthood Military Violence in a Palestinian Community Sample

    Science.gov (United States)

    Punamaki, R.L.; Komproe, I.; Qouta, S.; El-Masri, M.; de Jong, J.T.V.M.

    2005-01-01

    Objectives:: To show that exposure to childhood maltreatment deteriorates, whereas exposure to adulthood military violence mobilizes social support; Second, to show that associations between traumatic events and mental health problems are mediated through social support and, subsequently, adulthood military violence is associated with low level…

  19. Mobile learning in medicine

    Science.gov (United States)

    Serkan Güllüoü?lu, 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.

  20. Mobile Advertising

    OpenAIRE

    Alamuri, Lavanya

    2009-01-01

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

  1. Mobile Election

    OpenAIRE

    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...

  2. Mobile Workforce, Mobile Technology, Mobile Threats

    International Nuclear Information System (INIS)

    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)

  3. Mobile payment

    CERN Document Server

    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.

  4. Staging Mobilities

    DEFF Research Database (Denmark)

    Jensen, Ole B.

    2013-01-01

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

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

    Science.gov (United States)

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

    2014-11-01

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

  6. Mobile Probes in Mobile Learning

    DEFF Research Database (Denmark)

    Ørngreen, Rikke; BlomhØj, Ulla

    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). 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 knowledge base available in the design decision process.

  7. Mobile Semiotics

    DEFF Research Database (Denmark)

    Jensen, Ole B.

    2014-01-01

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

  8. Mobile Platforms and Development Environments

    CERN Document Server

    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

  9. Mobility Challenges

    OpenAIRE

    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 pr...

  10. Mobile Semiotics - signs and mobilities

    DEFF Research Database (Denmark)

    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 wayfiding systems.

  11. User Experience Evaluation in the Mobile Context

    Science.gov (United States)

    Obrist, Marianna; Meschtscherjakov, Alexander; Tscheligi, Manfred

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

  12. Separating mobility from mobile agents

    OpenAIRE

    Lauvset, Kåre J.; Marzullo, Keith; Johansen, Dag

    2001-01-01

    In this paper we argue that the traditional model of a mobile agent provides a poor programming structure. We base our argument on our experience since 1993 in building distributed applications and mobile agent platforms. We have observed that every distributed applications contain three distinct aspects, which we call function, mobility and management. Separating an application into these three aspects and programming them separately affords great flexibility and leverage when designing mobi...

  13. [Lymph mobilization].

    Science.gov (United States)

    Froneberg, W; Fabian, G

    1989-07-01

    Following a review of the literature lymph mobilization is described. Function and causalities of lymph mobilization and their interactions are explained giving examples and an evaluation of the experience available up to date. In many cases, manual neurotherapy may result in coordination and normalization of disorders which do not respond to other forms of therapy. PMID:2672664

  14. Mobile phone

    International Nuclear Information System (INIS)

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

  15. Correlation ion mobility spectroscopy

    Science.gov (United States)

    Pfeifer, Kent B. (Los Lunas, NM); Rohde, Steven B. (Corrales, NM)

    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.

  16. Mobility Challenges

    DEFF Research Database (Denmark)

    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.

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

    DEFF Research Database (Denmark)

    Cuttone, Andrea; JØrgensen, Sune Lehmann

    2014-01-01

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

  18. Predictable mobility

    OpenAIRE

    Iagnemma, Karl; Kewlani, Gaurav; Ishigami, Genya

    2009-01-01

    In this article, a statistical mobility prediction for planetary surface exploration rovers has been described. This method explicitly considers uncertainty of the terrain physical parameters via SRSM and employs models of both vehicle dynamics and wheel-terrain interaction mechanics. The simulation results of mobility prediction using three different techniques, SMC, LHSMC, and SRSM, confirms that SRSM significantly improves the computational efficiency compared with those conventional metho...

  19. Mobile Mechanic

    OpenAIRE

    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...

  20. Measuring Mobility

    OpenAIRE

    Cowell, Frank A.; Flachaire, Emmanuel

    2011-01-01

    Our new approach to mobility measurement involves separating out the valuation of positions in terms of individual status (using income, social rank, or other criteria) from the issue of movement between positions. The quantification of movement is addressed using a general concept of distance between positions and a parsimonious set of axioms that characterise the distance concept and yield a class of aggregative indices. This class of indices induces a superclass of mobility measures over t...

  1. Mobility Collector

    OpenAIRE

    Prelipcean, Adrian Corneliu; Gidofalvi, Gyo?zo?; Susilo, Yusak Octavius

    2014-01-01

    Despite the availability of mobile positioning technologies and scientists' interests in tracking, modelling and predicting the movements of individuals and populations, these technologies are seldom efficiently used. The continuous changes in mobile positioning and other sensor technologies overburden scientists who are interested in data collection with the task of developing, implementing and testing tracking algorithms and their efficiency in terms of battery consumption. To this extent, ...

  2. Mobile Phones, Financial Inclusion, and Growth

    Directory of Open Access Journals (Sweden)

    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.

  3. Mobile phones and mobile communication

    DEFF Research Database (Denmark)

    Ling, Richard; Donner, Jonathan

    2009-01-01

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

  4. Professional Flash Lite Mobile Development

    CERN Document Server

    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

  5. Hall mobility in multicrystalline silicon

    Science.gov (United States)

    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 healthcare.

    Science.gov (United States)

    Morgan, Stephen A; Agee, Nancy Howell

    2012-01-01

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

  7. Designing Mobilities

    DEFF Research Database (Denmark)

    Jensen, Ole B.

    2014-01-01

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

  8. The African Mobile Story

    DEFF Research Database (Denmark)

    2014-01-01

    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

  9. Kids' Quest: Mobility

    Science.gov (United States)

    ... Fact Check Up Hearing Loss Questions I Have Mobility Quest Mobility Fact Check Up Mobility Questions I Have Tourette Syndrome (TS) Quest Tourette ... Â What should you know? Children who have mobility challenges are sometimes confined to a wheelchair. By ...

  10. MOBILE DATABASE SECURITY THREATS

    Directory of Open Access Journals (Sweden)

    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.

  11. Mobile Customer Relationship Management and Mobile Security

    Science.gov (United States)

    Sanayei, Ali; Mirzaei, Abas

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

  12. Intergenerational Income Mobility and Family Dissolution

    OpenAIRE

    Rieck, Karsten Marshall Elseth

    2008-01-01

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

  13. Mobile Payments : Comparison of Mobile Wallet Concepts

    OpenAIRE

    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...

  14. Mobile TV

    OpenAIRE

    Orgad, Shani

    2009-01-01

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

  15. Optimum Mobility Performance with Mobile IP & SIP?

    OpenAIRE

    B. Naresh Kumar; DR. R. V. KRISHNAIAH?

    2013-01-01

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

  16. Exploring the Mobility of Mobile Phone Users

    OpenAIRE

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

    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 ran...

  17. Adapting mobile systems using logical mobility primitives

    OpenAIRE

    Zachariadis, S.

    2005-01-01

    Mobile computing devices, such as personal digital assistants and mobile phones, are becoming increasingly popular, smaller, more capable and even fashionable personal items. Combined with the recent advent of wireless networking techniques, users are equipped with mobile devices of significant computational abilities, which are able to wirelessly access information by dynamically connecting to many different networks. Despite the ubiquity of mobile devices, mobile systems are built using mon...

  18. Capital Mobility in African Countries

    Directory of Open Access Journals (Sweden)

    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.

  19. Exploring technology acceptance for mobile services

    Directory of Open Access Journals (Sweden)

    Kenny Phan

    2011-07-01

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

  20. Mobility Divides : ‘Staging’ and designing differential mobilities

    DEFF Research Database (Denmark)

    Jensen, Ole B.

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

  1. Mobile video with mobile IPv6

    CERN Document Server

    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

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

    OpenAIRE

    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...

  3. Mobile Misfortune

    DEFF Research Database (Denmark)

    Vigh, Henrik Erdman

    2015-01-01

    This article examines how the emergent cocaine trade in Bissau, the capital of the west African country of Guinea-Bissau, has become entangled with and trickled into the life worlds, hopes and fears of the city’s many impoverished young men. The article is divided into two parts. While the first 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 for themselves and their families, it shows how involvement in the cocaine trade is both a curse and a catalyst. Though trading the drug may facilitate migration and mobility, generating social being and worth in the process, it is an activity that is haunted by the threat of deportation and the termination of the mobility it enables. This article, thus, looks at the motives and manners in which young men in Bissau becomecaught 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, and how migration from the global South often has negative potentiality as an end-point via the ascription of illegality and condition of deportability that shade it.

  4. Mobile Search and Advertising

    OpenAIRE

    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...

  5. Mobile Scientific Calculator

    OpenAIRE

    Mohammed Abdulrahim Hamdi

    2012-01-01

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

  6. Mobile Schools for a Mobile World

    Science.gov (United States)

    Booth, Susan

    2013-01-01

    Overwhelmingly, independent schools are embracing mobile devices--laptops, iPads or other tablets, and smartphones--to enhance teaching and learning. This article describes the results of the "NAIS 2012 Mobile Learning Survey." Among its findings were that 75 percent of NAIS-member schools currently use mobile learning devices in at…

  7. Mobile Operating Systems

    OpenAIRE

    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

  8. Mobile Operating Systems

    Directory of Open Access Journals (Sweden)

    Vipin Kamboj

    2012-04-01

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

  9. Next generation mobile broadcasting

    CERN Document Server

    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

  10. Abrechnung mobiler Dienste im Mobile-Payment-Referenzmodell

    OpenAIRE

    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.

  11. Mobile Cloud Computing.

    OpenAIRE

    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...

  12. Mobility and Java RMI

    OpenAIRE

    Wall, Thomas

    2000-01-01

    Recent advances in computing device and wireless communication technologies are enabling the widespread use of mobile computing devices. Mobile computing presents many problems not encountered in a static computing environment. The limited storage and processing power on the mobile device, the limited bandwidth available on wireless networks and the difficulties of locating a mobile device mean that mobile environments are more difficult to design distributed systems for than ...

  13. Akzeptanzkriterien für mobile Bezahlverfahren

    OpenAIRE

    Pousttchi, Key; Selk, Bernhard; Turowski, Klaus

    2002-01-01

    The availability of accepted mobile payment procedures is an important condition for business profit of mobile commerce supply in business-to-customer context. Firstly, general considerations lead to the assumption about acceptance of mobile payment and mobile payment procedures that the decision about acceptance or not-acceptance of a mobile payment procedure is almost only made by the customer. Secondly, it is examined which criteria would be the most important ones for the decision. The re...

  14. Mobile, flexible user interfaces

    OpenAIRE

    Jansson, Tommy

    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 adapte...

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

    International Nuclear Information System (INIS)

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

  16. Undergraduate Attitudes and Expectations for Mobile Banking

    Directory of Open Access Journals (Sweden)

    Hanudin Amin

    2006-12-01

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

  17. Evaluating Mobile Applications for Urban Tourism

    Directory of Open Access Journals (Sweden)

    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.

  18. Nonprobability Sampling

    Science.gov (United States)

    Trochim, William M.K.

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

  19. Undergraduate Attitudes and Expectations for Mobile Banking

    OpenAIRE

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

    2006-01-01

    This study analyzed the undergraduate students' willingness on adopting the usage of mobile phone in banking transaction' focusing on Islamic banking in FT, Labuan. Research has been conducted to analyze the students' attitudes and expectations toward mobile banking. Furthermore, students' socio-demographic elements were also studied and analyzes in relations with the study. As noted, sample was taken from students of Universiti Malaysia Sabah, Labuan International Campus. A total of 615 stud...

  20. Neighborhood Amenities and Mobility in Older Adults

    OpenAIRE

    Rosso, Andrea L.; Grubesic, Tony H.; Auchincloss, Amy H.; Tabb, Loni P.; Michael, Yvonne L.

    2013-01-01

    Diversity of neighborhood amenities may promote the mobility of older adults. A 2010 community-based sample of 510 adults aged ?65 years in Philadelphia, Pennsylvania, and geospatial data from the Esri Business Analyst database (Esri, Inc., Redlands, California) were used to assess associations of neighborhood amenity diversity with mobility. Neighborhoods were defined by census tract, and diversity of amenities was derived by using the Leadership in Energy and Environmental Design's neighb...

  1. Mobile Commerce and Related Mobile Security Issues

    OpenAIRE

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

    2013-01-01

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

  2. MOBILE BUSINESS APPROACH BASED ON MOBILE AGENT

    OpenAIRE

    Ahmed Aloui; Okba Kazar

    2011-01-01

    Users today want the opportunity to make (or manage) a businesses in anytime and anywhere via their mobile devices. This paper proposes the architecture with mobile agent for the mobile businesses (m-business). M-business appeared as the promising approach to drive the vague following one of electronic business (e-business). Most of the e-busines [9] applications uses the traditional model client/server in which a commercial operation requires generally a link of stable communication being es...

  3. Mobile Commerce and Related Mobile Security Issues

    Directory of Open Access Journals (Sweden)

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

    2013-04-01

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

  4. Mobility analysis with mobile phone data

    OpenAIRE

    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...

  5. Designing Mobilities : Staging Materialities of Mobilities

    DEFF Research Database (Denmark)

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

  6. Head First Mobile Web

    CERN Document Server

    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

  7. Sampling Distribution of Sample Means

    Science.gov (United States)

    Lowry, Richard

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

  8. Gone Mobile? (Mobile Libraries Survey 2010)

    Science.gov (United States)

    Thomas, Lisa Carlucci

    2010-01-01

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

  9. A* Sampling

    OpenAIRE

    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 algori...

  10. Ion mobility sensor system

    Science.gov (United States)

    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.

  11. Make a Mobile!

    Science.gov (United States)

    Chicago Children's Museum

    2010-01-01

    In this activity, learners make mobiles to explore the concepts of balance, counterbalance, weight, and counterweight. Learners are encouraged to work in groups or with their families to create balanced mobiles using a variety of materials of varying weights.

  12. Tandem mobile robot system

    Science.gov (United States)

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

    2003-01-01

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

  13. Exploring the Mobility of Mobile Phone Users

    CERN Document Server

    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 ...

  14. MOBILE COMMERCE APPROACH BASED ON MOBILE AGENT

    Directory of Open Access Journals (Sweden)

    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.

  15. Mobile Claims Management

    OpenAIRE

    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...

  16. Fixed mobile convergence handbook

    CERN Document Server

    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

  17. PSiS Mobile

    OpenAIRE

    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...

  18. Mobile Learning Applications Audit

    OpenAIRE

    Paul POCATILU; 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...

  19. Experiences with Linux Mobile

    OpenAIRE

    Sivertsen, Frode

    2007-01-01

    Mobile phones are becoming more and more complex in terms of both hardware and software. Linux Mobile, as a term covering both the kernel and its surrounding components that together form the operating system, is said to have the potential to become the de-facto standard operating system for mobile phones and an enabler for advanced future mobile services. This master thesis evaluates key aspects and central mechanisms of the Linux kernel and how it supports its surrounding hardware and...

  20. Mobile Services Adoption Model

    OpenAIRE

    Abu Ghannam, Bashar

    2011-01-01

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

  1. Mobile Student Information System

    Science.gov (United States)

    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…

  2. Random Samples

    Science.gov (United States)

    Siegrist, Kyle

    Created by Kyle Siegrist of the University of Alabama-Huntsville, this is an online, interactive lesson on random samples. The author provides examples, exercises, and applets concerning many different topics. Some of these include: sample mean, law of large numbers, sample variance, partial sums, central limit theorem, special properties of normal samples, order statistics, and sample covariance and correlation. Additionally, the author provides links to external resources for students wanting to engage further with the topic. This is simply one of seventeen lessons. They are all easily accessible as the author has formatted his site much like an online textbook.

  3. The Microbial Colonisation of Mobile Phone Used by Healthcare Staffs

    OpenAIRE

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

    2009-01-01

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

  4. From spaces to places: emerging contexts in mobile privacy

    OpenAIRE

    Mancini, Clara; Thomas, Keerthi; Rogers, Yvonne; Price, Blaine A.; Jedrzejczyk, Lukasz; Bandara, Arosha K.; Joinson, Adam N.; Nuseibeh, Bashar

    2009-01-01

    Mobile privacy concerns are central to Ubicomp and yet remain poorly understood. We advocate a diversified approach, enabling the cross-interpretation of data from complementary methods. However, mobility imposes a number of limitations on the methods that can be effectively employed. We discuss how we addressed this problem in an empirical study of mobile social networking. We report on how, by combining a variation of experience sampling and contextual interviews, we have started focusing o...

  5. Estimating and Learning the Trajectory of Mobile Phones

    OpenAIRE

    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...

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

    OpenAIRE

    Karikoski, Juuso; Ma?kinen, Olli

    2012-01-01

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

  7. Supersampling and network reconstruction of urban mobility

    CERN Document Server

    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...

  8. Ion mobility sensor

    Science.gov (United States)

    Koo, Jackson C.; Yu, Conrad M.

    2005-08-23

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

  9. Mobile intention recognition

    CERN Document Server

    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

  10. Mobile satellite communications handbook

    CERN Document Server

    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 communications Describes and explains historic, current, and planned civil, commercial, and military mobile satellite communication systems.  1st Edition charts and tables updated and expanded with current material for today's mobile satellite technology

  11. Sample Size

    Science.gov (United States)

    2012-08-03

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

  12. Key determinants of students’ mobile phone choice

    Directory of Open Access Journals (Sweden)

    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.

  13. Ubiquitous Mobile Awareness from Sensor Networks

    Science.gov (United States)

    Kanter, Theo; Pettersson, Stefan; Forsström, Stefan; Kardeby, Victor; Österberg, Patrik

    Users require applications and services to be available everywhere, enabling them to focus on what is important to them. Therefore, context information (e.g., spatial data, user preferences, available connectivity and devices, etc.) has to be accessible to applications that run in end systems close to users. In response to this, we present a novel architecture for ubiquitous sensing and sharing of context in mobile services and applications. The architecture offers distributed storage of context derived from sensor networks wirelessly attached to mobile phones and other devices. The architecture also handles frequent updates of sensor information and is interoperable with presence in 3G mobile systems, thus enabling ubiquitous sensing applications. We demonstrate these concepts and the principle operation in a sample ubiquitous Mobile Awareness service.

  14. Client Mobile Software Design Principles for Mobile Learning Systems

    OpenAIRE

    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 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 res...

  15. Mobility in single crystal Bi2Se3.

    Science.gov (United States)

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

    1972-01-01

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

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

    Science.gov (United States)

    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…

  17. Connecting Mobile Users Through Mobile Social Networks

    Directory of Open Access Journals (Sweden)

    Faisal Alkhateeb

    2012-10-01

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

  18. Sample preparation

    International Nuclear Information System (INIS)

    Sample preparation prior to HPLC analysis is certainly one of the most important steps to consider in trace or ultratrace analysis. For many years scientists have tried to simplify the sample preparation process. It is rarely possible to inject a neat liquid sample or a sample where preparation may not be any more complex than dissolution of the sample in a given solvent. The last process alone can remove insoluble materials, which is especially helpful with the samples in complex matrices if other interactions do not affect extraction. Here, it is very likely a large number of components will not dissolve and are, therefore, eliminated by a simple filtration process. In most cases, the process of sample preparation is not as simple as dissolution of the component interest. At times, enrichment is necessary, that is, the component of interest is present in very large volume or mass of material. It needs to be concentrated in some manner so a small volume of the concentrated or enriched sample can be injected into HPLC. 88 refs

  19. Mobile Service Architecture in Future Mobile Environments

    OpenAIRE

    Kamal Bashah, Nor Shahniza

    2013-01-01

    Nowadays, most mobile phones are equipped with multiple wireless access technologies, which allow the user to maintain connections while moving across networks (e.g. having a telephony service in GSM while moving to a WLAN area). The IEEE 802.21 Media Independent Handover (MIH) Services is a standard aiming at facilitating handover between these heterogeneous networks. In the current situation, in order for the mobile device to detect other wireless access network (e.g. WLAN), the user has to...

  20. Mobile healthcare informatics.

    Science.gov (United States)

    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

  1. Explaining mobile commerce services adoption by different type of customers

    Directory of Open Access Journals (Sweden)

    Francisco J. Molina-Castillo

    2008-12-01

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

  2. Mobile Web Analytics

    Directory of Open Access Journals (Sweden)

    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.

  3. CERN Mobility Survey

    CERN Multimedia

    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 ...

  4. Staging interrail mobilities

    DEFF Research Database (Denmark)

    Jensen, Martin Trandberg; Gyimóthy, Szilvia

    2015-01-01

    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 of rail travel, by exploring how interrail travel is embedded in, and (im)mobilised by socio-material environments and institutional design decisions. More precisely, it explores the affordances of three objects that shape interrail mobility: the interrail pass, the RailPlanner application and seat 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.

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

    Science.gov (United States)

    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

  6. Mobility of radiocesium in soils around Bratislava

    International Nuclear Information System (INIS)

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

  7. MOBILE LABORATORY FOR BACILLUS ANTHRACIS DETECTION

    Science.gov (United States)

    In response to a bioterrorism event in the Washington, DC area in October 2001 a mobile laboratory (ML) was set up in the city to conduct rapid molecular tests on environmental samples for the detection of Bacillus anthracis spores. The ML contained two Class I laminar flow hoods, a small autoclave,...

  8. Mobility Experiences of Adolescents with Cerebral Palsy

    Science.gov (United States)

    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. Predictors of Social Mobilization Speed

    CERN Document Server

    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.

  10. Mobile Web Analytics

    OpenAIRE

    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...

  11. Mobile Immersive Music

    OpenAIRE

    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 ...

  12. On Mobile Bluetooth Tags

    OpenAIRE

    Namiot, Dmitry; Sneps-sneppe, Manfred

    2015-01-01

    This paper presents a new approach for hyper-local data sharing and delivery on the base of discoverable Bluetooth nodes. Our approach allows customers to associate user-defined data with network nodes and use a special mobile application (context-aware browser) for presenting this information to mobile users in proximity. Alternatively, mobile services can request and share local data in M2M applications rely on network proximity. Bluetooth nodes in cars are among the best ...

  13. Mobile Collaborative Learning System

    OpenAIRE

    Kuadey, Noble

    2010-01-01

    This project work is about mobile learning system that will enable people to learn and collaborate anywhere and at anytime. It is the continuation of the work carried out in autumn 2009, by Noble and Izaz.In this project work, a Mobile Collaborative Learning System (MCLS) prototype was designed and implemented. The project work has been carried out according to the design science research methodology. An evaluation of the usability of the prototype was conducted. Mobile Services Acceptance Mo...

  14. Residential Mobility and Migration

    Science.gov (United States)

    Crowder, Kyle

    In this module you will have the opportunity to explore the frequency of different types of residential moves carried out by Americans. You will examine some of the basic determinants of residential mobility by looking at variations in different types of mobility by age, marital status, education, and housing tenure. Finally, you will have an opportunity to test hypotheses, drawn from a popular theoretical perspective, about racial differences in residential mobility.

  15. Education and social mobility

    OpenAIRE

    Cremer, Helmuth; Donder, Philippe; Pestieau, Pierre

    2010-01-01

    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-...

  16. Limits of social mobilization

    OpenAIRE

    Rutherford, Alex; Cebrian, Manuel; Dsouza, Sohan; Moro, Esteban; Pentland, Alex; Rahwan, Iyad

    2013-01-01

    The Internet and social media have enabled the mobilization of large crowds to achieve time-critical feats, ranging from mapping crises in real time, to organizing mass rallies, to conducting search-and-rescue operations over large geographies. Despite significant success, selection bias may lead to inflated expectations of the efficacy of social mobilization for these tasks. What are the limits of social mobilization, and how reliable is it in operating at these limits? We build on recent re...

  17. Attitudes of young Italians towards mobility experiences

    OpenAIRE

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

    2009-01-01

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

  18. Programming the Mobile Web

    CERN Document Server

    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.

  19. Intrinsic mobility in graphene

    International Nuclear Information System (INIS)

    Recent studies have shown that a high K dielectric solvent screens the impurities for room temperature transport in graphene and the mobility has been found to increase by orders of magnitude. This gives what is probably the intrinsic, phonon limited mobility at room temperature, and we have confirmed this with simulation. Mobility as high as 44 000 cm2 V-1 s-1 was achieved. At very low density, impurity scattering still is the determining factor for mobility, but this is significantly reduced in the recent experiments due to the dielectric screening. At high density, impurity scattering becomes negligible. (fast track communication)

  20. Practical mobile forensics

    CERN Document Server

    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

  1. Trust in Mobile Commerce

    OpenAIRE

    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. Best Sale Mobile Application

    OpenAIRE

    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 ...

  3. Making Everyday Mobility

    DEFF Research Database (Denmark)

    Wind, Simon

    Based upon a qualitative PhD study of 11 families everyday mobility, this paper inquiries into the everyday mobility of families with children in the Greater Copenhagen Area and the role mobility plays in contributing to coping in the families’ everyday life. Drawing on Mobilities theory (Jensen 2013; Urry 2007) and family theory (Holdsworth 2013; Morgan 2011), it is argued that family mobility is far from only an instrumental phenomenon, displacing family members back and forth between activities and doings, but also a type of family practice (Morgan, 2011) carrying social and emotional 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 atmospheres. Moreover, the performances of these mobility practices themselves play an important role in the process of coping as family members micro-coordinate and re-order the family mobility on the move to avoid disruptions in the socio-temporal ordering in family life. To conceptualise this dynamic 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 contingent and dynamic environment in which everyday life is lived. References: Holdsworth, C. (2013) Family and Intimate Mobilities, Palgrave Macmillan, New York Jensen, O.B. (2013) Staging Mobilities, Routledge, London & New York Morgan, D.H. (2011) Rethinking family practices, Palgrave Macmillan Urry, J. (2007) Mobilities, Polity, Cambridge Vannini, P. (2012) Ferry tales: Mobility, place, and time on Canada's west coast, Taylor & Francis

  4. Neighborhood amenities and mobility in older adults.

    Science.gov (United States)

    Rosso, Andrea L; Grubesic, Tony H; Auchincloss, Amy H; Tabb, Loni P; Michael, Yvonne L

    2013-09-01

    Diversity of neighborhood amenities may promote the mobility of older adults. A 2010 community-based sample of 510 adults aged ?65 years in Philadelphia, Pennsylvania, and geospatial data from the Esri Business Analyst database (Esri, Inc., Redlands, California) were used to assess associations of neighborhood amenity diversity with mobility. Neighborhoods were defined by census tract, and diversity of amenities was derived by using the Leadership in Energy and Environmental Design's neighborhood development index (US Green Building Council, Washington, DC). Generalized estimating equations adjusted for demographic, socioeconomic, and neighborhood characteristics were used to estimate differences in mobility score by tertile of amenity diversity. Analyses were stratified by participants' routine travel habits (stayed at home, stayed in home zip code, or traveled beyond home zip code). We found that for those who spent most of their time in their home neighborhoods, mobility scores (from the Life-Space Assessment, which ranges from 0 to 104 points) were 8.3 points higher (95% confidence interval: 0.1, 16.6) among those who lived in neighborhoods with the most amenity diversity compared with those who lived in neighborhoods with the least amenity diversity. No significant associations between amenity diversity and mobility were observed for those who did not leave home or who regularly traveled outside their neighborhoods. Neighborhoods with a high diversity of amenities may be important promoters of mobility in older adults who do not routinely travel outside their neighborhoods. PMID:23666814

  5. Mobile phone based SCADA for industrial automation.

    Science.gov (United States)

    Ozdemir, Engin; Karacor, Mevlut

    2006-01-01

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

  6. Exploring the mobility of mobile phone users

    Science.gov (United States)

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

    2013-03-01

    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 100,000 anonymized and randomly chosen individuals in a dataset of communications in Portugal. We show that clustering and principal component analysis allow for a significant dimension reduction with limited loss of information. The most important features are related to geographical location. In particular, we observe that most people spend most of their time at only a few locations. With the help of clustering methods, we then robustly identify home and office locations and compare the results with official census data. Finally, we analyze the geographic spread of users’ frequent locations and show that commuting distances can be reasonably well explained by a gravity model.

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

    OpenAIRE

    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,...

  8. Mobilizing community energy

    International Nuclear Information System (INIS)

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

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

    OpenAIRE

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

    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. Promoting Function, Independence, and Mobility

    Science.gov (United States)

    Mobility and Accessibility - National Multiple Sclerosis Society Skip to navigation Skip to content Menu Navigation National Multiple ... Email Home Living Well with MS Mobility & Accessibility Mobility & Accessibility Explore tools and strategies that will allow ...

  11. Energy and sustainable mobility

    International Nuclear Information System (INIS)

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

  12. Mobility Test Article (MTA)

    Science.gov (United States)

    1965-01-01

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

  13. Wireless mobile Internet security

    CERN Document Server

    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

  14. Mobile Applications for Extension

    Science.gov (United States)

    Drill, Sabrina L.

    2012-01-01

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

  15. Mobile Apps for Librarians

    Science.gov (United States)

    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,…

  16. Mastering Mobile Security

    Science.gov (United States)

    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…

  17. Mobile-first Bootstrap

    CERN Document Server

    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.

  18. Access to mobile services

    CERN Document Server

    Bouguettaya, Athman

    2009-01-01

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

  19. Mobile communications design fundamentals

    CERN Document Server

    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.

  20. What is mobile in entrepreneurship?

    OpenAIRE

    Lundmark, Erik; Waern, åsa

    2008-01-01

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

  1. Aero particles characterization emitted by mobile sources

    International Nuclear Information System (INIS)

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

  2. Sencha Touch Mobile JavaScript Framework

    CERN Document Server

    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

  3. Sample Means

    Science.gov (United States)

    Lacey, Michelle

    This site, presented by the Department of Statistics at Yale University, gives an explanation of, a definition for and an example of sample means. Topics include mean, variance, distribution, and the central limit theorem. Overall, this is a great resource for any mathematics classroom studying statistics.

  4. Mobile Learning for All

    Directory of Open Access Journals (Sweden)

    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.

  5. Client Mobile Software Design Principles for Mobile Learning Systems

    Directory of Open Access Journals (Sweden)

    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.

  6. Ion mobility analysis of lipoproteins

    Science.gov (United States)

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

    2007-08-21

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

  7. Stackable differential mobility analyzer for aerosol measurement

    Energy Technology Data Exchange (ETDEWEB)

    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.

  8. Characterizing Industrial Emissions using a Mobile Laboratory

    Science.gov (United States)

    Herndon, S. C.; Wood, E. C.; Knighton, W. B.; Oluwole, L.; Albo, S.; Onasch, T. B.; Fortner, E.; Wormhoudt, J.; Zavala, M. A.; Molina, L. T.; Kolb, C. E.

    2010-12-01

    Several compounds emitted from petrochemical refining and chemical production facilities are highly reactive volatile organic compounds (HR-VOC). The measurements undertaken during the Study of Houston Area Radical Precursors (SHARP) were designed to improve inventory assessments of industrial HR-VOC emissions as well as understand the near field plume evolution from unique partial combustion point sources such as industrial flares. The measurements were conducted using a mobile laboratory equipped with real-time, in-situ sampling instrumentation for several of the top HR-VOC compounds and other combustion tracer compounds. The mobile laboratory was maneuvered downwind from several industrial facilities during the campaign. These measurements have been evaluated using a state of the art dispersion model. The sampling method, plume characteristics, and model comparison will be discussed. The measurement effort was coordinated with other approaches, including open path techniques and airborne sampling methods. The comparison of source strengths deduced from different characterization methods will be presented.

  9. 76 FR 24051 - In the Matter of Certain Electronic Devices, Including Mobile Phones, Mobile Tablets, Portable...

    Science.gov (United States)

    2011-04-29

    ...Mobile Phones, Mobile Tablets, Portable Music Players, and Computers, and Components...mobile phones, mobile tablets, portable music players, and computers, and components...mobile phones, mobile tablets, portable music players, and computers, and...

  10. Embodied Cultures of Mobilities

    DEFF Research Database (Denmark)

    Jensen, Ole B.

    2010-01-01

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

  11. ‘Optimum mobility’ facelift. Part 2 – the technique

    OpenAIRE

    Fanous, Nabil; Karsan, Naznin; Zakhary, Kristina; Tawile, Carolyne

    2006-01-01

    In the first of this two-part article on the ‘optimum mobility’ facelift, facial tissue mobility was analyzed, and three theories or mechanisms emerged: ‘intrinsic mobility’, ‘surgically induced mobility’ and ‘optimum mobility points’.

  12. Mobile IPTV: Implications for Education

    Directory of Open Access Journals (Sweden)

    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.

  13. Mobile and contextual learning

    Directory of Open Access Journals (Sweden)

    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.

  14. Mobile Sensing Systems

    Directory of Open Access Journals (Sweden)

    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.

  15. Cooperative Mobile Web Browsing

    DEFF Research Database (Denmark)

    Perrucci, GP; Fitzek, FHP

    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 trafic requirements resulting from advanced and rich content services. Extending the state of the art, higher data rates can only be achieved by increasing complexity, cost, and energy consumption of mobile phones. In contrast to the linear extension of current technology, we propose a novel architecture where mobile phones are grouped together in clusters, using a short-range communication such as Bluetooth, sharing, and accumulating their cellular capacity. The accumulated data rate resulting from collaborative interactions over short-range links can then be used for cooperative mobile web browsing. By implementing the cooperative web browsing on commercial mobile phones, it will be shown that better performance is achieved in terms of increased data rate and therefore reduced access times, resulting in a significantly enhanced web browsing user experience on mobile phones. Copyright (C) 2009 G. P. Perrucci et al.

  16. Mobile sensing systems.

    Science.gov (United States)

    Macias, Elsa; Suarez, Alvaro; Lloret, Jaime

    2013-01-01

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

  17. Warehousing Massive Mobile Datasets

    Directory of Open Access Journals (Sweden)

    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.

  18. Research in Mobile Intelligence Mobile Computing and Computational Intelligence

    CERN Document Server

    Yang, Laurence T

    2010-01-01

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

  19. Towards a Statistical Physics of Human Mobility

    CERN Document Server

    Gallotti, Riccardo; Rambaldi, Sandro

    2012-01-01

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

  20. Editorial: Mobile (March 2010

    Directory of Open Access Journals (Sweden)

    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.

  1. Barcode Payment System in Trusted Mobile Devices

    OpenAIRE

    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...

  2. Mobile technology and place

    CERN Document Server

    Wilken, Rowan

    2013-01-01

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

  3. Mobility of Hellenistic women

    OpenAIRE

    Loman, Pasi

    2004-01-01

    The purpose of the current thesis is to study various aspects of women’s 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 women’s mobility for the Greek societies as a whole will also be evaluated. To study the mobility of Hellenistic women we shall use a wi...

  4. Mobile networks architecture

    CERN Document Server

    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

  5. Abrechnung mobiler Mehrwertdienste

    OpenAIRE

    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...

  6. Mobile ad hoc networking

    CERN Document Server

    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.

  7. MOBILE COMMERCE: A REVIEW

    Directory of Open Access Journals (Sweden)

    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.

  8. Windows Azure mobile services

    CERN Document Server

    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

  9. Mobile communication and intermediality

    DEFF Research Database (Denmark)

    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 all contexts of daily life

  10. Mobile Game Probes

    DEFF Research Database (Denmark)

    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.

  11. Mobile radio channels

    CERN Document Server

    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

  12. Data mining mobile devices

    CERN Document Server

    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

  13. Telemedicine Based on Mobile Devices and Mobile Cloud Computing

    OpenAIRE

    Lidong Wang

    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 smartph...

  14. Compatibility Heuristics for Modern Mobile Games : Mobile games, Game testing.

    OpenAIRE

    Gitau, Paul

    2010-01-01

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

  15. Mobile Apps and Romanian Mobile Devices Users’ Preferences

    OpenAIRE

    Mihaela Filofteia TUTUNEA

    2014-01-01

    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 ...

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

    OpenAIRE

    G. H. Pirie

    2009-01-01

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

  17. How Mobility Increases Mobile Cloud Computing Processing Capacity

    OpenAIRE

    Nguyen, Anh Dung; Sénac, Patrick; Ramiro, Victor

    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...

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

    OpenAIRE

    Samidha Dwivedi Sharma; Dr. R. S. Kasana

    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 close...

  19. Libraries and the Mobile Web

    Science.gov (United States)

    Hanson, Cody

    2011-01-01

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

  20. Mobility decline in old age

    DEFF Research Database (Denmark)

    Rantakokko, Merja; Mänty, Minna Regina

    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 promote mobility in old age.

  1. Mobility. Snapshot Report, Fall 2011

    Science.gov (United States)

    National Student Clearinghouse, 2011

    2011-01-01

    This paper presents information on student mobility for 2011. It offers data on the following: (1) Mobility Rates by Student Enrollment Status; (2) Mobile Student Enrollment at 2-/4-Year Institutions; and (3) Mobile Student Enrollment at Public/Private Institutions.

  2. Interactive TV meets Mobile Computing

    OpenAIRE

    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.

  3. Predicting mobile device battery life

    OpenAIRE

    Korhonen, Kaisa

    2011-01-01

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

  4. Economic Mobility Project

    Science.gov (United States)

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

  5. jQuery Mobile

    CERN Document Server

    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

  6. Understanding Mobile Apps

    Science.gov (United States)

    ... type of apps that go with it. The Android, Apple, Microsoft and BlackBerry mobile operating systems have ... less than trustworthy. If you’re using an Android operating system, you will have an opportunity to ...

  7. Mobile Learning Applications Audit

    Directory of Open Access Journals (Sweden)

    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.

  8. EcoMOBILE

    Science.gov (United States)

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

  9. Distribution over Mobile Environments

    OpenAIRE

    Le Mouël, Frédéric; André, Françoise

    2000-01-01

    The development of mobile computing, combined with the large-scale information systems growth, makes it possible to access an important volume of information and services anywhere anytime. However, due to this dynamic environment, applications are subject to important variations which must be addressed by an adaptive behavior. We propose in this paper an approach which consists in an adaptive distribution of applications or services over mobile environments. This distribution uses contextual ...

  10. Mobile Ad Hoc Network

    OpenAIRE

    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...

  11. "Mobile Fashion" Application

    OpenAIRE

    Kashanipour, Morvarid

    2012-01-01

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

  12. Mobile Sensing Systems

    OpenAIRE

    Elsa Macias; Alvaro Suarez; Jaime Lloret

    2013-01-01

    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...

  13. Auctioning Bulk Mobile Messages

    OpenAIRE

    Meij, S.; Pau, L-f; Heck, H. W. G. M.

    2003-01-01

    The search for enablers of continued growth of SMS traffic, as well as the take-off of the more diversified MMS message contents, open up for enterprises the potential of bulk use of mobile messaging , instead of essentially one-by-one use. In parallel, such enterprises or value added services needing mobile messaging in bulk - for spot use or for use over a prescribed period of time - want to minimize total acquisition costs, from a set of technically approved providers of ...

  14. Mobile Tracking Application

    OpenAIRE

    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...

  15. Mobile Learning for All

    OpenAIRE

    Marco Arrigo; Giovanni Ciprì

    2010-01-01

    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...

  16. Education and mobility

    OpenAIRE

    Machin, Stephen J.; Pelkonen, Panu; Salvanes, Kjell Gunnar

    2008-01-01

    We show that the length of compulsory education has a causal impact on regional labour mobility. The analysis is based on a quasi-exogenous staged Norwegian school reform, and register data on the whole population. Based on the results, we conclude that part of the US-Europe difference, as well as the European North-South difference in labour mobility, is likely to be due to differences in levels of education in the respective regions.

  17. SMS Based Mobile Banking

    OpenAIRE

    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...

  18. Indigenization of Urban Mobility

    OpenAIRE

    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 ...

  19. Mobile Computation with Functions

    OpenAIRE

    K?rl?, Zeliha D.

    2002-01-01

    The practice of computing has reached a stage where computers are seen as parts of a global computing platform. The possibility of exploiting resources on a global scale has given rise to a new paradigm -- the mobile computation paradigm -- for computation in large-scale distributed networks. Languages which enable the mobility of code over the network are becoming widely used for building distributed applications. This thesis explores distributed computation with languages which adopt f...

  20. REST based mobile applications

    Science.gov (United States)

    Rambow, Mark; Preuss, Thomas; Berdux, Jörg; Conrad, Marc

    2008-02-01

    Simplicity is the major advantage of REST based webservices. Whereas SOAP is widespread in complex, security sensitive business-to-business aplications, REST is widely used for mashups and end-user centric applicatons. In that context we give an overview of REST and compare it to SOAP. Furthermore we apply the GeoDrawing application as an example for REST based mobile applications and emphasize on pros and cons for the use of REST in mobile application scenarios.

  1. Mobile Uninterruptible Power Supply

    Science.gov (United States)

    Mears, Robert L.

    1990-01-01

    Proposed mobile unit provides 20 kVA of uninterruptible power. Used with mobile secondary power-distribution centers to provide power to test equipment with minimal cabling, hazards, and obstacles. Wheeled close to test equipment and system being tested so only short cable connections needed. Quickly moved and set up in new location. Uninterruptible power supply intended for tests which data lost or equipment damaged during even transient power failure.

  2. Cooperative Mobile Web Browsing

    OpenAIRE

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

    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...

  3. Essays on economic mobility

    OpenAIRE

    Yalonetzky, Gaston Isaias; Fafchamps, Marcel

    2008-01-01

    This thesis is a collection of three essays with contributions to the intergenerational and intra-generational mobility literature. The essay on full risk insurance and measurement error examines the likelihood that measurement error may reconcile observed departures from perfect rank immobility in insurable consumption with the mobility predictions of full risk insurance, by generating spurious rank-breaking transitions. The essay shows that under certain assumptions full risk insurance pred...

  4. CONTRAIL – ARCHITECTURE FOR MOBILE DATA SHARING APPLICATIONS?

    Directory of Open Access Journals (Sweden)

    Lavanya.K

    2013-09-01

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

  5. Mobile-to-Mobile Video Recommendation

    OpenAIRE

    Seshadri, Padmanabha Venkatagiri; Chan, Mun Choon; Ooi, Wei Tsang

    2012-01-01

    Mobile device users can now easily capture and socially share video clips in a timely manner by uploading them wirelessly to a server. When attending crowded events, such as an exhibition or the Olympic Games, however, timely sharing of videos becomes difficult due to choking bandwidth in the network infrastructure, preventing like-minded attendees from easily sharing videos with each other through a server. One solution to alleviate this problem is to use direct device-to-d...

  6. Mobile Web – Enterprise Application Advantages

    OpenAIRE

    Sanjeev Narayan Bal?

    2013-01-01

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

  7. Distributed Java Mobile Information System

    OpenAIRE

    Ahmad Shukri Mohd Noor

    2009-01-01

    Technology is now everywhere; integrated into our everyday objects and activities. Mobile computers and devices are now widely affordable and powerful enough. Because of that, developments of mobile applications become a phenomenon today. Mobile applications could be used both to connect people with each other, and to link them with crucial data from almost anywhere in mobile manner. Since mobile devices come in a variety of purposes and properties and in different communication mechanisms, a...

  8. Mobile concrete factory profiability analysis

    OpenAIRE

    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...

  9. Presence experience in mobile gaming

    OpenAIRE

    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 ...

  10. Mobile telephony and children

    International Nuclear Information System (INIS)

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

  11. Mobile medical image retrieval

    Science.gov (United States)

    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.

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

    OpenAIRE

    Yunfei Xu; Jongeun Choi

    2011-01-01

    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 ...

  13. An Investigation of Initial Trust in Mobile Banking

    Directory of Open Access Journals (Sweden)

    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.

  14. A study of malware detection on smart mobile devices

    Science.gov (United States)

    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%.

  15. Travelling salesman-based variable density sampling

    OpenAIRE

    Chauffert, Nicolas; Ciuciu, Philippe; Kahn, Jonas; Weiss, Pierre

    2013-01-01

    Compressed sensing theory indicates that selecting a few measurements independently at random is a near optimal strategy to sense sparse or compressible signals. This is infeasible in practice for many acquisition devices that acquire sam- ples along continuous trajectories. Examples include magnetic resonance imaging (MRI), radio-interferometry, mobile-robot sampling, ... In this paper, we propose to generate continuous sampling trajectories by drawing a small set of measur...

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

    OpenAIRE

    Gitau, Paul

    2010-01-01

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

  17. MOBILIZING KNOWLEDGE IN DENMARK

    DEFF Research Database (Denmark)

    Holm, Claus

    2011-01-01

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

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

    Science.gov (United States)

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

    2014-01-01

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

  19. Handbook of Mobile Ad Hoc Networks for Mobility Models

    CERN Document Server

    Roy, Radhika Ranjan

    2011-01-01

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

  20. Spectral Fingerprinting on a Standard Mobile Phone

    OpenAIRE

    Daniel Filippini; Zafar Iqbal

    2010-01-01

    Spectral fingerprinting of chemical indicators, using computer screens as light sources and web cameras as imaging detectors, is an emerging approach for chemical sensing with the potential to coexist in common consumer electronic devices.The migration of this technique to mobile phones is key to extend this sensing approach to the most ubiquitous and familiar type of instrumentation. Here, we investigate the feasibility and performance of spectral fingerprinting on reference samples using a ...

  1. Coulombic Effects in Ion Mobility Spectrometry

    OpenAIRE

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

    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...

  2. The Borders of Mobile Handset Ecosystems: Is Coopetition Inevitable?

    Science.gov (United States)

    Gueguen, Gaël; Isckia, Thierry

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

  3. Barriers to Adoption of Mobile banking: Evidence from Ghana

    OpenAIRE

    Faisal Iddris

    2013-01-01

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

  4. On the empirics of social mobility: A macroeconomic approach

    OpenAIRE

    Berthold, Norbert; Gru?ndler, Klaus

    2014-01-01

    What are the causes of social mobility in a society? Whereas this question is of great interest for both researchers and policymakers, empirical studies concerning cross-country evidence usually suffer from small sample biases as intergenerational income elasticities are only available for a small number of countries. In this paper, we provide two measures based on widely available macro data enabling the estimation of social mobility for a large number of countries. Based on these measures w...

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

    OpenAIRE

    Alwraikat, Mansour A.; 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...

  6. Consumer Attitude Toward Mobile Marketing in Bosnia and Herzegovina

    Directory of Open Access Journals (Sweden)

    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.

  7. Chromosomal aberrations in mobile phone users in Tamilnadu, southern India

    International Nuclear Information System (INIS)

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

  8. Microbiological flora of mobile phones of resident doctors

    Directory of Open Access Journals (Sweden)

    Sandeep B. Kokate

    2012-11-01

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

  9. Mobile Robot Navigation

    DEFF Research Database (Denmark)

    Andersen, Jens Christian

    2007-01-01

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

  10. Mobile systems capability plan

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-09-01

    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.

  11. Are mobile phones harmful?

    DEFF Research Database (Denmark)

    Blettner, M; Berg, Gabriele

    2000-01-01

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

  12. Mobile systems capability plan

    International Nuclear Information System (INIS)

    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

  13. Financial disclosure and international capital mobility in Latin America

    Scientific Electronic Library Online (English)

    Otavio R. de, Medeiros; Luis Gustavo do Lago, Quinteiro.

    2008-06-01

    Full Text Available The extant literature provides evidence on the impact of financial disclosure environments on international capital mobility. However, to our knowledge, there are no such studies including Latin-American countries. We aimed to fill this void by assessing the influence of accounting information on in [...] ternational capital mobility in a twenty-two-country sample, including the three largest Latin-American countries: Argentina, Brazil and Mexico. The countries included in the sample represent around 80% of the world's GDP from 1995 to 2001. Our empirical results show with a 99% confidence level that the degree of disclosure of value-relevant accounting information has positively influenced international capital mobility. We also show, with a 95% confidence level, that countries where financial accounting is less aligned with tax accounting present higher international capital mobility. The three Latin-American countries studied present relatively low levels of disclosure among the sampled countries. However, whereas Argentina and Brazil show low levels of capital mobility, Mexico stands out with a high capital mobility, which we reckon could be accounted for by the country's trade and investment connections with the US and by its participation in the NAFTA.

  14. Instant XenMobile MDM

    CERN Document Server

    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.

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

    CERN Document Server

    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...

  16. Creation of a mobile intervention group

    International Nuclear Information System (INIS)

    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

  17. SMS Based Mobile Banking

    Directory of Open Access Journals (Sweden)

    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

  18. Efficient mobility pattern stream matching on mobile devices

    OpenAIRE

    Florescu, Simona-claudia; Mock, Michael; Ko?rner, Christine; May, Michael

    2012-01-01

    The increasing amount of mobile phones that are equipped with localization technology offers a great opportunity for the collection of mobility data. This data can be used for detecting mobility patterns. Matching mobility patterns in streams of spatiotemporal events implies a trade-off between efficiency and pattern complexity. Existing work deals either with low expressive patterns, which can be evaluated efficiently, or with very complex patterns on powerful machines. We propose an approac...

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

    OpenAIRE

    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 ...

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

    OpenAIRE

    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...

  1. Mobile satellite communication networks

    CERN Document Server

    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

  2. Professional mobile application development

    CERN Document Server

    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

  3. Mobility in Cloud Systems

    Directory of Open Access Journals (Sweden)

    Tariq Alwada'n

    2014-05-01

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

  4. Mobile Learning Anytime, Anywhere

    Science.gov (United States)

    Oksana Hlodan (AIBS; )

    2010-10-01

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

  5. Mobile Tracking Application

    Directory of Open Access Journals (Sweden)

    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.

  6. Nokia and mobile gaming

    OpenAIRE

    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 recommendati...

  7. Mobile network maintenance (GSM)

    CERN Multimedia

    IT Department

    2009-01-01

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

  8. Adding mobility to non-mobile web robots

    OpenAIRE

    Sudmann, Nils P.; Johansen, Dag

    2000-01-01

    In this paper we will show that it is possible to combine mobile agent technology with existing non-mobile data mining applications. The motivation for this is the advantage mobile agents offer in moving the computation closer to the data in a distributed system. This can save bandwidth and increase performance when the data is condensed as a result of data mining.

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

    Science.gov (United States)

    Steinberg, Matthew D; Kassal, Petar; Kerekovi?, Irena; Steinberg, Ivana Murkovi?

    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

  10. Mobility Models in Adhoc Networks

    Directory of Open Access Journals (Sweden)

    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. 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...

  12. Privacy issues in mobile advertising

    DEFF Research Database (Denmark)

    Cleff, Evelyne Beatrix

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

  13. Laboratory experiments in mobile robot navigation

    International Nuclear Information System (INIS)

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

  14. Mobile phones and hearing - A review

    Science.gov (United States)

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

    2009-01-01

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

  15. Security threats in Prepaid Mobile

    OpenAIRE

    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 Gu...

  16. On using Mobile IP Protocols

    OpenAIRE

    Fayza A. Nada

    2006-01-01

    The recent advances in wireless communication technology and the unprecedented growth of the Internet have paved the way for wireless networking and IP mobility. Mobile Internet protocol has been designed within the IETF to support the mobility of users who wish to connect to the Internet and maintain communications as they move from place to place. This study describes and summarizes the current Internet draft for mobile IP (MIPv4) with its major components: agent discovery, registration and...

  17. Mobility Models in Adhoc Networks

    OpenAIRE

    Sandeep Kaur Gill

    2012-01-01

    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 patt...

  18. Resource Identification Using Mobile Queries

    OpenAIRE

    Balasundaram, S. R.; Saravanan, A.

    2010-01-01

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

  19. Collaborative Location Aware Mobile Services

    OpenAIRE

    Konstantas, Dimitri; Seigneur, Jean-marc

    2008-01-01

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

  20. Characteristics of Mobile Payment Procedures

    OpenAIRE

    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, ...

  1. Mobile-Assisted Language Learning

    OpenAIRE

    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...

  2. Mobile Governance - An Indian Perspective

    OpenAIRE

    ponasanapalli sree sudha

    2011-01-01

    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 a...

  3. Mobile technologies for every library

    CERN Document Server

    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.

  4. Mobile evaporator corrosion test results

    International Nuclear Information System (INIS)

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

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

    Directory of Open Access Journals (Sweden)

    Gale Parchoma

    2011-12-01

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

  6. Creating a Mobile Library Website

    Science.gov (United States)

    Cutshall, Tom C.; Blake, Lindsay; Bandy, Sandra L.

    2011-01-01

    The overwhelming results were iPhones and Android devices. Since the library wasn't equipped technologically to develop an in-house application platform and because we wanted the content to work across all mobile platforms, we decided to focus on creating a mobile web-based platform. From the NLM page of mobile sites we chose the basic PubMed/…

  7. Webshop Optimization for Mobile Devices

    OpenAIRE

    Mei, Long

    2009-01-01

    This thesis deals with the programming technology which can be used to optimize the webshop design for mobile devices. The purpose of this thesis is to demonstrate several possible solutions when doing implementation of webshop applications for mobile devices. web application developers and companies who wants to optimize their products for mobile devices could also benefit from this study.

  8. Libraries and the Mobile Revolution

    Science.gov (United States)

    Krishnan, Yvonne

    2011-01-01

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

  9. Mobile Agents Applications.

    Science.gov (United States)

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

    2001-01-01

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

  10. Teleoperation of mobile robots

    Scientific Electronic Library Online (English)

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

    2006-04-01

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

  11. Mobile Library Filming Device.

    Science.gov (United States)

    Martin, Claud E.

    This report contains details of the study and performance test of the Mobile Filming Library Device which consists of a camera and self contained power source. Because of the cost savings and service improvement characteristics, this technique involving the use of a microfilm intermediate in the preparation of copies of material filed in full size…

  12. Mobile exhibition in Mexico

    International Nuclear Information System (INIS)

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

  13. Security of mobile communications

    CERN Document Server

    Boudriga, Noureddine

    2009-01-01

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

  14. Mobility of photosynthetic proteins.

    Czech Academy of Sciences Publication Activity Database

    Ka?a, Radek

    2013-01-01

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

  15. Mobile lighting apparatus

    Science.gov (United States)

    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. Mobile Learning for All

    Science.gov (United States)

    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…

  17. Waves and mobile phones

    International Nuclear Information System (INIS)

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

  18. Mobile Processes: Enhancing Cooperation in Distributed Mobile Environments

    Directory of Open Access Journals (Sweden)

    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.

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

    OpenAIRE

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

    2009-01-01

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

  20. Residential mobility and the spatial dispersion of personal networks: effects on social support

    OpenAIRE

    Viry, Gil

    2011-01-01

    Using a representative national sample of personal networks, this article explores how the spatial dispersion of networks, residential mobility and social support are linked. Three issues will be addressed here. Firstly, how is the spatial dispersion of personal networks related to individuals’ social characteristics, network composition and residential mobility? Secondly, how do the spatial dispersion of networks, residential mobility and their combined effect influence the number and (thi...

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

    OpenAIRE

    Muhammad Asif Khan

    2010-01-01

    Purpose:  The purpose of this study was to examine the dimensions of users’ perceived service quality of cellular mobile telephone operators in Pakistan.Research design / methodology: A structured questionnaire, covering SERVQUAL dimensions of tangible, reliability, assurance, empathy, responsiveness, and additional dimensions of network quality and convenience, was used to measure mobile phone users’ perception about service quality. Convenience sample of 800 mobile phone users was used...

  2. Humanoid Mobile Manipulation Using Controller Refinement

    Science.gov (United States)

    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.

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

    OpenAIRE

    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...

  4. Financial Disclosure and International Capital Mobility in Latin America

    Directory of Open Access Journals (Sweden)

    Luis Gustavo do Lago Quinteiro

    2008-04-01

    Full Text Available The extant literature provides evidence on the impact of financial disclosure environments on international capital mobility. However, to our knowledge, there are no such studies including Latin-American countries. We aimed to fill this void by assessing the influence of accounting information on international capital mobility in a twenty-two-country sample, including the three largest Latin-American countries: Argentina, Brazil and Mexico. The countries included in the sample represent around 80% of the world’s GDP from 1995 to 2001. Our empirical results show with a 99% confidence level that the degree of disclosure of value-relevant accounting information has positively influenced international capital mobility. We also show, with a 95% confidence level, that countries where financial accounting is less aligned with tax accounting present higher international capital mobility. The three Latin-American countries studied present relatively low levels of disclosure among thesampled countries. However, whereas Argentina and Brazil show low levels of capital mobility, Mexico stands out with a high capital mobility, which we reckon could be accounted for by the country’s trade and investment connections with the US and by its participation in the NAFTA.

  5. Barriers to Adoption of Mobile banking: Evidence from Ghana

    Directory of Open Access Journals (Sweden)

    Faisal Iddris

    2013-07-01

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

  6. Mobile devices tools and technologies

    CERN Document Server

    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

  7. Tethered Contactless Mobile Nuclear Environment Monitoring Robot

    International Nuclear Information System (INIS)

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

  8. Tethered Contactless Mobile Nuclear Environment Monitoring Robot

    Energy Technology Data Exchange (ETDEWEB)

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

    2013-05-15

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

  9. Mobile Robots for Hospital Logistics

    DEFF Research Database (Denmark)

    Özkil, Ali Gürcan

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

  10. Demonstration of a mobile NDA safeguards measurement system

    International Nuclear Information System (INIS)

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

  11. Governmobility : The Powers of Mobility

    DEFF Research Database (Denmark)

    Bærenholdt, JØrgen Ole

    2013-01-01

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

  12. Process analysis using ion mobility spectrometry.

    Science.gov (United States)

    Baumbach, J I

    2006-03-01

    Ion mobility spectrometry, originally used to detect chemical warfare agents, explosives and illegal drugs, is now frequently applied in the field of process analytics. The method combines both high sensitivity (detection limits down to the ng to pg per liter and ppb(v)/ppt(v) ranges) and relatively low technical expenditure with a high-speed data acquisition. In this paper, the working principles of IMS are summarized with respect to the advantages and disadvantages of the technique. Different ionization techniques, sample introduction methods and preseparation methods are considered. Proven applications of different types of ion mobility spectrometer (IMS) used at ISAS will be discussed in detail: monitoring of gas insulated substations, contamination in water, odoration of natural gas, human breath composition and metabolites of bacteria. The example applications discussed relate to purity (gas insulated substations), ecology (contamination of water resources), plants and person safety (odoration of natural gas), food quality control (molds and bacteria) and human health (breath analysis). PMID:16132133

  13. Programmable Baseband Filter for Multistandard Mobile Phones

    DEFF Research Database (Denmark)

    Jensen, Rasmus Glarborg; Christensen, Kåre Tais

    2003-01-01

    This paper describes a channel selection filter for mobile communication systems using a direct down conversion architecture. The filter can be programmed to meet the requirements of different communication standards, including GSM (Global System for Mobile communication), WCDMA (Wideband Code Division Multiple Access), and Bluetooth. The filter includes a novel DC offset compensation circuit that combines offset sampling in GSM mode with high pass filtering in WCDMA mode. The filter can be programmed to different noise performance levels by programming the impedance level and power consumption of the input transconductor. The entire filter consumes between 2.5 mW and 7.5 mW, depending on the desired noise performance. It is implemented in a standard 0.25 mum CMOS process. A test circuit has been developed and fabricated and measurements show that both the required programmability and the required transfer functions can be obtained from the designed circuit.

  14. Activation analysis with small mobile reactors

    International Nuclear Information System (INIS)

    A small nuclear reactor (a low-power reactor without heat removal devices) usually has thermal power output under 100 W and an average in-core thermal neutron flux below 109 n/cm2s. Conventional activation analysis is restricted to determination of specific elements with large neutron capture cross sections in sizable samples. In-vivo prompt gamma activation analysis (IVPGAA) can be used for diagnosis of elemental composition of the human body, particularly the essential elements Ca, Cl, N, and P in the whole body, and toxic Cd and Hg in contaminated organs. In this chapter, activation analysis using an external neutron beam from the Tsing Hua Mobile Educational Reactor (THMER) for in vivo activation is described. Characteristics of the mobile reactor, in-vivo medical diagnosis, and radiation safety are emphasized. 17 refs, 12 figs, 3 tabs

  15. Mobilization processes from vanadium alloys during oxidation

    International Nuclear Information System (INIS)

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

  16. The microbial colonisation of mobile phone used by healthcare staffs.

    Science.gov (United States)

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

    2009-06-01

    Mobile phones are dispensable accessories in social life and normally they are not cleaned properly. Therefore, they serve as a reservoir of bacteria and may cause nosocomial infections in hospitals. The purpose of this study was to investigate microbiological colonization of mobile phones used by healthcare staffs. The study was carried out collecting swab samples with Cary-Blair transport medium from mobile phones of attending healthcare staffs from different departments of three hospitals in March, 2008. All collected samples were inoculated in 5% sheep blood agar, eosin-methylene blue agar and Sabouraud Dextrose agar. Isolated bacteria were identified using by classic technique and Vitec2 (Biomerieux, France) full automated bacteria identification system. Growth was observed in 65 of collected 106 samples, corresponding to 61.3%. The most frequent bacteria were Staphylococcus epidermidis followed by Staphylococcus aureus, Bacillus sp., Corynebacterium sp. and Escherichia coli, respectively. In conclusion, bacteria were colonized on mobile phones frequently and mobile phones may become reservoir of microorganism for nosocomial infections. PMID:19803124

  17. The Microbial Colonisation of Mobile Phone Used by Healthcare Staffs

    Directory of Open Access Journals (Sweden)

    I.H. Kilic

    2009-01-01

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

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

    OpenAIRE

    Muzzamil Aziz Chaudhary; Matthias Jarke

    2013-01-01

    With the merging of IP and TelCo networks, Mobile-to-Mobile (M2M) social networks are to be unfolded as an ultimate telecom business in the near future. By M2M, both service provider and service client are aimed to be mobile based. Hence considering mobile devices to be resource constrained and mobile networks as low-bandwidth networks, provisioning high-profile multimedia services is not somewhat straight forward. The Quality of Service (QoS) has always been a great concern in this scenario....

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

    OpenAIRE

    Paunikar, A. N.

    2014-01-01

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

  20. Equivalence Testing Mobile Apps

    Directory of Open Access Journals (Sweden)

    Denzler Christoph

    2012-01-01

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

  1. Mobile Autonomous Humanoid Assistant

    Science.gov (United States)

    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.

  2. Indigenization of Urban Mobility

    CERN Document Server

    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. Mobile nuclear power systems

    International Nuclear Information System (INIS)

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

  4. Mobile Remote Control Architecture

    OpenAIRE

    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...

  5. Lessons by mobile learning

    OpenAIRE

    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

  6. Skoda mobile measuring system

    International Nuclear Information System (INIS)

    A mobile system equipped with measuring and computer equipment is described which is also used for measuring temperature during the welding of the inner side of a nuclear reactor pressure vessel. 12 thermocouples are used which are installed on the outer side of the vessel. The measured values are computer processed. Parallel measurements are carried out using conventional measuring and recording equipment. (J.B.)

  7. Mobile analysis systems

    International Nuclear Information System (INIS)

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

  8. Qualified Mobile Server Signature

    OpenAIRE

    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...

  9. Miniaturized Ion Mobility Spectrometer

    Science.gov (United States)

    Kaye, William J. (Inventor); Stimac, Robert M. (Inventor)

    2015-01-01

    By utilizing the combination of a unique electronic ion injection control circuit in conjunction with a particularly designed drift cell construction, the instantly disclosed ion mobility spectrometer achieves increased levels of sensitivity, while achieving significant reductions in size and weight. The instant IMS is of a much simpler and easy to manufacture design, rugged and hermetically sealed, capable of operation at high temperatures to at least 250.degree. C., and is uniquely sensitive, particularly to explosive chemicals.

  10. Eine Kategorisierung mobiler Applikationen

    Directory of Open Access Journals (Sweden)

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

  11. Mobility and conflict

    OpenAIRE

    Bhattacharya, Sourav; Deb, Joyee; Kundu, Tapas

    2012-01-01

    We study the role of inter-group differences in the emergence of conflict. In our setting, two groups compete for the right to allocate societys resources, and we allow for costly intergroup mobility. The winning group offers an allocation, that the opposition can either accept, or reject and wage conflict. Expropriating a large share of resources increases political strength by attracting opposition members, but such economic exclusion implies lower per capita shares and higher risk of confl...

  12. Mobile signature service integration

    OpenAIRE

    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...

  13. Educational mobility during socialism.

    Czech Academy of Sciences Publication Activity Database

    Simonová, Natalie

    Brno : FSS MU, 2006, s. 1-29. [European Graduate School for Social Sciences: international seminar. Tel? (CZ), 18.05.2006-21.05.2006] R&D Projects: GA ?R(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

  14. Capital Mobility in Russia

    OpenAIRE

    Ketenci, Natalya

    2014-01-01

    This paper investigates the level of capital mobility in Russia, testing the Feldstein-Horioka puzzle proposed by Feldstein and Horioka (1980). The study examines relations between saving and investment flows in Russia in the presence of structural breaks. It employs the quarterly data for the period 1995-2013, where all estimations are made for two periods, the full period 1995-2013, and 2000-2013, the post Russian crisis period. The empirical analysis includes the Kejriwal and Perron (2008,...

  15. Environmental monitoring systems: a new type of mobile laboratory

    International Nuclear Information System (INIS)

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

  16. GLIMMPSE Lite: Calculating Power and Sample Size on Smartphone Devices

    OpenAIRE

    Munjal, Aarti; Sakhadeo, Uttara R.; Muller, Keith E.; Glueck, Deborah H.; Kreidler, Sarah M.

    2014-01-01

    Researchers seeking to develop complex statistical applications for mobile devices face a common set of difficult implementation issues. In this work, we discuss general solutions to the design challenges. We demonstrate the utility of the solutions for a free mobile application designed to provide power and sample size calculations for univariate, one-way analysis of variance (ANOVA), GLIMMPSE Lite. Our design decisions provide a guide for other scientists seeking to produce statistical soft...

  17. Utopias of Mobilities

    DEFF Research Database (Denmark)

    Jensen, Ole B.; Freudendal-Pedersen, Malene

    2012-01-01

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

  18. Mobile Probing and Probes

    DEFF Research Database (Denmark)

    Duvaa, Uffe; Ørngreen, Rikke

    2013-01-01

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

  19. Lazy Mobile Intruders

    DEFF Research Database (Denmark)

    Mödersheim, Sebastian Alexander; Nielson, Flemming

    2013-01-01

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

  20. Vidas móveis / Mobile Lives

    Scientific Electronic Library Online (English)

    João, Freitas.

    2014-04-01

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

  1. Selected overtone mobility spectrometry.

    Science.gov (United States)

    Ewing, Michael A; Conant, Christopher R P; Zucker, Steven M; Griffith, Kent J; Clemmer, David E

    2015-05-19

    A new means of acquiring overtone mobility spectrometry (OMS) data sets that allows distributions of ions for a prescribed overtone number is described. In this approach, the drift fields applied to specific OMS drift regions are varied to make it possible to select different ions from a specific overtone that is resonant over a range of applied frequencies. This is accomplished by applying different fields for fixed ratios of time while scanning the applied frequency. The ability to eliminate peaks from all but a single overtone region overcomes a significant limitation associated with OMS analysis of unknowns, especially in mixtures. Specifically, a priori knowledge via selection of the overtone used to separate ions makes it possible to directly determine ion mobilities for unknown species and collision cross sections (assuming that the ion charge state is known). We refer to this selection method of operation as selected overtone mobility spectrometry (SOMS). A simple theoretical description of the SOMS approach is provided. Simulations are carried out and discussed in order to illustrate the advantages and disadvantages of SOMS compared with traditional OMS. Finally, the SOMS method (and its distinction from OMS) is demonstrated experimentally by examining a mixture of peptides generated by enzymatic digestion of the equine cytochrome c with trypsin. PMID:25892116

  2. Mobile Governance - An Indian Perspective

    Directory of Open Access Journals (Sweden)

    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-governance’s objective is to make it possible for people of the country to access different kinds of information, and eventually even equip them to effect payments of bills, using their mobile phones. At this scenario the objective of the paper is to explore the potential for m-governance in India, next section throws some light on case studies on m- governance, third section concentrates and policy and regulatory issues pertaining to m-governance in India and finally ends with conclusion.Keywords:  M-Governance: Mobile Governance, ICT: Information and Communication Technologies, Policy Issues.

  3. Cooperative Caching Framework for Mobile Cloud Computing

    OpenAIRE

    Joy, Preetha Theresa; Jacob, K. Poulose

    2013-01-01

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

  4. Dimensions and Issues of Mobile Agent Technology

    OpenAIRE

    Yashpal Singh; Kapil Gulati; Niranjan, S.

    2012-01-01

    Mobile Agent is a type of software system which acts "intelligently" on one's behalf with the feature of autonomy, learning ability and most importantly mobility. Now mobile agents are gaining interest in the research community. In this article mobile agents will be addressed as tools for mobile computing. Mobile agents have been used in applications ranging from network management to information management. We present mobile agent concept, characteristics, classification, n...

  5. Mobile Web – Enterprise Application Advantages

    Directory of Open Access Journals (Sweden)

    Sanjeev Narayan Bal?

    2013-02-01

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

  6. Securing mobile code.

    Energy Technology Data Exchange (ETDEWEB)

    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.

  7. System Architecture and Mobility Management for Mobile Immersive Communications

    OpenAIRE

    Farzad Safaei; Mehran Dowlatshahi

    2007-01-01

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

  8. Mobile Advertising : A Case study of Mobile advertising Solutions

    OpenAIRE

    Salim, Ali; Alikhani, Nima

    2009-01-01

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

  9. Mobile Design Pattern Gallery UI Patterns for Mobile Applications

    CERN Document Server

    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

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

    Science.gov (United States)

    Gaggioli, Andrea; Riva, Giuseppe

    2013-01-01

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

  11. MobileMAN: Mobile Metropolitan Ad hoc Networks

    OpenAIRE

    Conti, Marco

    2003-01-01

    The project aims to define and develop a metropolitan area, self-organizing and totally wireless network that we call Mobile Metropolitan Ad-hoc Network (MobileMAN). In a MobileMAN the users device are the network, no infrastructure is strictly required. A MobileMAN is finalized at providing, at a low cost and where and when is needed, the communication and interaction platform for people inside a man. It will support a kind of citizens network by which people could avoid the operators infras...

  12. Soft Mobility and Urban Transformation Soft Mobility and Urban Transformation

    Directory of Open Access Journals (Sweden)

    Rosa Anna La Rocca

    2010-04-01

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

  13. Route Optimization in Network Mobility

    Directory of Open Access Journals (Sweden)

    Md. Hasan Tareque

    2013-01-01

    Full Text Available NEtwork MObility (NEMO controls mobility of a number of mobile nodes in a comprehensive way using one or more mobile routers. To choose a route optimization scheme, it is very important to have a quantitative comparison of the available route optimization schemes. The focus of this paper is to analyze the degree of Route Optimization (RO, deploy-ability and type of RO supported by each class in general. The comparison shows the differences among the schemes in terms of issues, such as additional header, signaling and memory requirement. We classify the schemes established on the basic method for route optimization, and equal the schemes based on protocol overhead, such as header overhead, amount of signaling, and memory requirements. Lastly the performance of the classes of different schemes has to be estimated under norms such as available bandwidth, topology of the mobile network and mobility type.

  14. Advances in Mobile Cloud Computing

    Directory of Open Access Journals (Sweden)

    Timur Mirzoev

    2015-05-01

    Full Text Available As advances in technology occur, mobile cloud computing is able to overcome the issue of resource poverty that occurs in mobile devices. Manufacturers now look at cloud computing as an asset because they can run their products better. The number of businesses and individuals that are investing in cloud computing services is anticipated to grow rapidly. Rapid growth of this nature will have a large impact in the IT industry. This study shows that cloud computing, including mobile computing, is a major contribution to the expansion of output and employment within the IT sector. An improvement in performance is making mobile cloud computing a better choice for consumers. In recent years, changes in the mobile cloud computing framework have enabled engineers to offload computational processing to other systems in the cloud that dramatically improve the mobile device experience.

  15. Distributed Java Mobile Information System

    Directory of Open Access Journals (Sweden)

    Ahmad Shukri Mohd Noor

    2009-12-01

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

  16. The Impact of Digital Mobile Devices in Higher Education

    Science.gov (United States)

    Sevillano-García, M.ª Luisa; Vázquez-Cano, Esteban

    2015-01-01

    This research examined the acceptance, incidence, and use of digital mobile devices (tablets and smartphones) among university students in the European Higher Education Area (EHEA). The research was contextualized in a sample of 419 students from three Spanish public universities. Through a quantitative methodology, we identified the factors and…

  17. 76 FR 41522 - In the Matter of Certain Electronic Devices, Including Mobile Phones, Mobile Tablets, Portable...

    Science.gov (United States)

    2011-07-14

    ...Devices, Including Mobile Phones, Mobile Tablets, Portable Music Players, and Computers, and Components Thereof; Notice of...importation of certain mobile phones, mobile tablets, portable music players, and computers. 76 FR 24051 (Apr. 29,...

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

    Directory of Open Access Journals (Sweden)

    Süleyman BARUTÇU

    2008-01-01

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

  19. Mobile Services and Network Proximity

    OpenAIRE

    Namiot, Dmitry; Sneps-sneppe, Manfred

    2013-01-01

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

  20. Reweaving UMA: Urbanism Mobility Architecture:

    OpenAIRE

    Calabrese, L. M.

    2004-01-01

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

  1. Akzeptanz mobiler Bezahlverfahren in Deutschland

    OpenAIRE

    Khodawandi, Darius; Pousttchi, Key; Wiedemann, Dietmar Georg

    2003-01-01

    The avaiability of wide accepted mobile payment procedures is an important condition for the business profit of mobile commerce offers in the B2C area. Based on a bundle of acceptance criterias an empirical analysis of customer sight on mobile payment procedures was executed at the end of 2002 by the authors. There were three primary objectives: to disclose reasons for using or refusal, to find out the relevance of different acceptance criterias as well as to indentify the importance of sever...

  2. Diffusion of mobile Internet services

    OpenAIRE

    Kivi, Antero

    2011-01-01

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

  3. Spiderweb : A Social Mobile Network

    OpenAIRE

    Sapuppo, Antonio

    2010-01-01

    Social networking sites obtained a great success in the last years. Their popularity is related to changing lifestyles, where people increasingly look for new acquaintances or cultivate old friendships by means of the Internet, typically using a PC. Yet along with the rapidly increasing amount of mobile phone users, as well as the development of so-called smart phones, the possibility for creating similar services for mobiles arises. Importantly, the mobile phones are not just entry points to...

  4. Reciprocity of mobile phone calls

    OpenAIRE

    Kovanen, Lauri; Saramaki, Jari; Kaski, Kimmo

    2010-01-01

    We present a study of the reciprocity of human behaviour based on mobile phone usage records. The underlying question is whether human relationships are mutual, in the sense that both are equally active in keeping up the relationship, or is it on the contrary typical that relationships are lopsided, with one party being significantly more active than the other. We study this question with the help of a mobile phone data set consisting of all mobile phone calls between 5.3 mi...

  5. Mobile Phone Tracking & Positioning Techniques

    OpenAIRE

    LAXMANA SIRIDHARA ARIGELA; PUTTA ADITYA VEERENDRA; SIMHADRI ANVESH; KOLISETTY SANDEEP SATYA HANUMAN

    2013-01-01

    Mobile positioning technology has become an important area of research, for emergency as well as for commercial services. Mobile positioning in cellular networks will provide several services such as, locating stolen mobiles, emergency calls, different billing tariffs depending on where the call is originated, and methods to predict the user movement inside a region. The evolution to location-dependent services and applications in wireless systems continues to require the development of more ...

  6. Building Evacuation with Mobile Devices

    OpenAIRE

    Merkel, Sabrina

    2014-01-01

    The rapidly growing world population and increasingly dense settlements demand ever-larger and more complex buildings from today's engineers. In comparison to this technological progress, a building's equipment for emergency evacuation has been hardly developed further. This work presents a concept for a building evacuation system based on mobile devices. Furthermore, various algorithms for route planning with mobile devices and for indoor localization of mobile devices are addressed.

  7. Security for Mobile Payment Transaction

    OpenAIRE

    Desta, Girmay

    2012-01-01

    The advancement of ICT in a variety of sectors helped in improving the time consuming and rigid service into fast and flexible service that is closer to the reach of individuals. For instance, mobile applications have evolved in different sectors such as healthcare patient support, geographic mapping and positioning, banking, e-commerce payment services and others. This study focuses on one of the most sensitive applications, which is mobile payment. Mobile payment system being one of the wid...

  8. MOBILE DEVICES IN MEDICAL EDUCATION

    Directory of Open Access Journals (Sweden)

    Carlos F. Muñoz Núñez

    2010-07-01

    Full Text Available The great popularity and growing availability of several mobile devices brings the opportunity of their use as educational tools. PDAs (Personal Digital Assistants, portable multimedia players and smartphones have been are familial devices that can be used for mobile learning (mLearning,  learning that happens when the learner takes advantage of the learning opportunities offered by mobile technologies, anywhere/anytime. This work explores the diverse alternatives these devices offer in medical education.

  9. Intergenerational earnings mobility: changes across cohorts in Britain

    OpenAIRE

    Ermisch, John; Nicoletti, Cheti

    2005-01-01

    The aim of this paper is to analyse intergenerational earnings mobility in Britain for cohorts of sons born between 1950 and 1972. Since there are no British surveys with information on both sons and their fathers earnings covering the above period, we consider two separate samples from the British Household Panel Survey: a first sample containing information on sons earnings and a set of occupational and education characteristics of their fathers and a second one with data on the same set of...

  10. Two measurement modes for mobile phone optical sensing

    OpenAIRE

    Eriksson, Mats; Iqbal, Zafar

    2014-01-01

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

  11. Does acute exposure to mobile phones affect human attention?

    OpenAIRE

    Russo, R.; Fox, E.; Cinel, C.; Boldini, A.; Defeyter, Ma; Mirshekar-syahkal, D.; Mehta, A.

    2006-01-01

    Recent studies have indicated that acute exposure to low level radiofrequency (RF) electromagnetic fields generated by mobile phones affects human cognition. However, the relatively small samples used, in addition to methodological problems, make the outcomes of these studies difficult to interpret. In our study we tested a large sample of volunteers (168) using a series of cognitive tasks apparently sensitive to RF exposure (a simple reaction task, a vigilance task, and a subtraction task). ...

  12. Using Mobile Devices for User Authentication

    Science.gov (United States)

    Lach, Jacek

    One of the most common methods of user authentication utilizes passwords. This technique is widely spread and well known. Its main drawback is that it stresses human memory to allow for successful authentication and still remains in the domain which is called weak authentication. This paper presents a solution to this problem by introducing a form of two factor authentication by utilization of smartphones. The idea of such system is presented as well as a sample implementation, called MOTH (an acronym for MObile auTHentication), which allows for user authentication. The discussion of the system's security and its limitations is also presented.

  13. Helium mobility in advanced nuclear ceramics

    Energy Technology Data Exchange (ETDEWEB)

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

    2014-05-01

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

  14. Helium mobility in advanced nuclear ceramics

    Science.gov (United States)

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

    2014-05-01

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

  15. Helium mobility in advanced nuclear ceramics

    International Nuclear Information System (INIS)

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

  16. Bi-Modal Biometric Authentication on Mobile Phones in Challenging Conditions

    OpenAIRE

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

    2013-01-01

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

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

    OpenAIRE

    Munir, Abdul Razak

    2008-01-01

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

  18. Mobile environmental radiation monitoring station

    International Nuclear Information System (INIS)

    A mobile environmental radiation monitoring station has been developed and established for the Israeli Ministry of Environment. The radiation monitoring station is ready for immediate placing in any required location, or can be operated from a vehicle. The station collects data Tom the detector and transfers it via cellular communication network to a Computerized Control Center for data storage, processing, and display . The mobile station is fully controlled from the. Routinely, the mobile station responses to the data request accumulated since the last communication session. In case of fault or alarm condition in the mobile station, a local claim is activated and immediately initiates communication with the via cellular communication network. (authors)

  19. The mobile application hacker's handbook

    CERN Document Server

    Chell, Dominic; Colley, Shaun; Whitehouse, Ollie

    2015-01-01

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

  20. Nuclear powerplants for mobile applications.

    Science.gov (United States)

    Anderson, J. L.

    1972-01-01

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

  1. Mobile device security for dummies

    CERN Document Server

    Campagna, Rich; Krishnan, Ashwin

    2011-01-01

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

  2. Speech Recognition on Mobile Devices

    DEFF Research Database (Denmark)

    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 ASR in the mobile context covering motivations, challenges, fundamental techniques and applications. Three ASR architectures are introduced: embedded speech recognition, distributed speech recognition and network speech recognition. Their pros and cons and implementation issues are discussed. Applications within command and control, text entry and search are presented with an emphasis on mobile text entry.

  3. Spiderweb : A Social Mobile Network

    DEFF Research Database (Denmark)

    Sapuppo, Antonio

    2010-01-01

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

  4. Mobility Integration of ERP systems

    Directory of Open Access Journals (Sweden)

    Álvaro LOZANO

    2015-03-01

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

  5. Mutual Mobile Membranes with Timers

    CERN Document Server

    Aman, Bogdan

    2009-01-01

    A feature of current membrane systems is the fact that objects and membranes are persistent. However, this is not true in the real world. In fact, cells and intracellular proteins have a well-defined lifetime. Inspired from these biological facts, we define a model of systems of mobile membranes in which each membrane and each object has a timer representing their lifetime. We show that systems of mutual mobile membranes with and without timers have the same computational power. An encoding of timed safe mobile ambients into systems of mutual mobile membranes with timers offers a relationship between two formalisms used in describing biological systems.

  6. Mobile Intelligent Autonomous Systems

    Directory of Open Access Journals (Sweden)

    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

  7. 76 FR 43689 - Draft Guidance for Industry and Food and Drug Administration Staff; Mobile Medical Applications...

    Science.gov (United States)

    2011-07-21

    ...Drug Administration Staff; Mobile Medical Applications; Availability AGENCY...use on mobile platforms (mobile applications or ``mobile apps...is calling mobile medical applications (mobile medical apps). This...

  8. Principles of mobile communication

    CERN Document Server

    Stüber, 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

  9. Secure Mobile Trade Agent

    Directory of Open Access Journals (Sweden)

    Musbah M. Aqe

    2007-01-01

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

  10. Trigonometry via Mobile Device

    Science.gov (United States)

    IMPART RET Program,

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

  11. Mobile phones and cancer

    International Nuclear Information System (INIS)

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

  12. Semantics in mobile sensing

    CERN Document Server

    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

  13. Mobile Bay turbidity study

    Science.gov (United States)

    Crozier, G. F.; Schroeder, W. W.

    1978-01-01

    The termination of studies carried on for almost three years in the Mobile Bay area and adjacent continental shelf are reported. The initial results concentrating on the shelf and lower bay were presented in the interim report. The continued scope of work was designed to attempt a refinement of the mathematical model, assess the effectiveness of optical measurement of suspended particulate material and disseminate the acquired information. The optical characteristics of particulate solutions are affected by density gradients within the medium, density of the suspended particles, particle size, particle shape, particle quality, albedo, and the angle of refracted light. Several of these are discussed in detail.

  14. A shrike for mobility

    OpenAIRE

    Moore, Peter D.

    1999-01-01

    Getting from one place to another is a problem for a plant. One of the most efficient solutions to wrap seeds in an attractive, preferably tasty, envelope and so encourage gluttonous animals to transport therm. Wandering frugivores may thus become inadvertent vehicles of plant migration, but they could also find themselves the target of higher predators - so what then is the fate of the fruits? Is this where the story ends for the passively mobile plant? Apparently not. Work on fruit-eating l...

  15. Sampling Distribution of Sample Mean Differences

    Science.gov (United States)

    Lowry, Richard

    This page generates a graph of the sampling distribution of the difference between two means and displays the probabilities associated with that distribution. Users enter the population standard deviation and the sample sizes, Na and Nb. The applet also calculates the standard error of the sample mean difference.

  16. The Future of Mobile Technology and Mobile Wireless Computing

    Science.gov (United States)

    Hart, Jim; Hannan, Mike

    2004-01-01

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

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

    OpenAIRE

    Jun, Liu

    2013-01-01

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

  18. Modern survey sampling

    CERN Document Server

    Chaudhuri, Arijit

    2014-01-01

    Exposure to SamplingAbstract Introduction Concepts of Population, Sample, and SamplingInitial RamificationsAbstract Introduction Sampling Design, Sampling SchemeRandom Numbers and Their Uses in Simple RandomSampling (SRS)Drawing Simple Random Samples with and withoutReplacementEstimation of Mean, Total, Ratio of Totals/Means:Variance and Variance EstimationDetermination of Sample SizesA.2 Appendix to Chapter 2 A.More on Equal Probability Sampling A.Horvitz-Thompson EstimatorA.SufficiencyA.LikelihoodA.Non-Existence Theorem More Intricacies Abstract Introduction Unequal Probability Sampling Stra

  19. Sampling the cometary nucleus

    Science.gov (United States)

    Clark, B. C.; Amundsen, R. J.; Blanchard, D. P.

    1986-12-01

    Three modes for obtaining samples of cometary material: remote sampling, hover mode sampling, and landed (anchored) sampling are discussed. For each mode, trade-offs involving complexity, risk factors, and cost must be analyzed for the spacecraft and the sampling system. Flyby results for comet Halley indicate heterogeneity in the cometary nucleus that could dictate sampling at several different locations. Coring drills, drive tubes, and specialized mantle sampling devices must operate at cold temperatures (100 to 180 K) without heating the sample. Sample selections must be accomodated by the sample return canister, which must also be protected from thermal excursions.

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

    Directory of Open Access Journals (Sweden)

    Muhammad Asif Khan

    2010-09-01

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

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

    Directory of Open Access Journals (Sweden)

    Baqer Kord

    2012-03-01

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

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

    Directory of Open Access Journals (Sweden)

    Muzzamil Aziz Chaudhary

    2013-07-01

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

  3. Mobile contingency unit

    Energy Technology Data Exchange (ETDEWEB)

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

    2009-07-01

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

  4. Combine mobile monitoring conception

    International Nuclear Information System (INIS)

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

  5. Whirlpool routing for mobility

    KAUST Repository

    Lee, Jung Woo

    2010-01-01

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

  6. Mobile Health Technology Evaluation

    Science.gov (United States)

    Kumar, Santosh; Nilsen, Wendy J.; Abernethy, Amy; Atienza, Audie; Patrick, Kevin; Pavel, Misha; Riley, William T.; Shar, Albert; Spring, Bonnie; Spruijt-Metz, Donna; Hedeker, Donald; Honavar, Vasant; Kravitz, Richard; Lefebvre, R. Craig; Mohr, David C.; Murphy, Susan A.; Quinn, Charlene; Shusterman, Vladimir; Swendeman, Dallas

    2013-01-01

    Creative use of new mobile and wearable health information and sensing technologies (mHealth) has the potential to reduce the cost of health care and improve well-being in numerous ways. These applications are being developed in a variety of domains, but rigorous research is needed to examine the potential, as well as the challenges, of utilizing mobile technologies to improve health outcomes. Currently, evidence is sparse for the efficacy of mHealth. Although these technologies may be appealing and seemingly innocuous, research is needed to assess when, where, and for whom mHealth devices, apps, and systems are efficacious. In order to outline an approach to evidence generation in the field of mHealth that would ensure research is conducted on a rigorous empirical and theoretic foundation, on August 16, 2011, researchers gathered for the mHealth Evidence Workshop at NIH. The current paper presents the results of the workshop. Although the discussions at the meeting were cross-cutting, the areas covered can be categorized broadly into three areas: (1) evaluating assessments; (2) evaluating interventions; and, (3) reshaping evidence generation using mHealth. This paper brings these concepts together to describe current evaluation standards, future possibilities and set a grand goal for the emerging field of mHealth research. PMID:23867031

  7. Autonomous mobile platform

    Science.gov (United States)

    Prakashan, A.; Samuel, S. D.; Shankar, J.; Vishal, Moondhra; Shivaswaroopa, S.; Vijayasimha, K.

    1993-05-01

    This paper presents the design and development of a partially intelligent mobile platform. The mobile robot derives its intelligence from sensors such as ultrasonic range finders, a mouse and a set of microswitches. Motion is assumed to bee on a plane two dimensional surface. The platform consists of two front wheels and two rear wheels. While the front wheels are undriven, the rear wheels are individually driven by two motors to realize both forward movement as well as steering. Ultrasonic range finders have been employed to plan an obstacle free path. A mouse like arrangement is fitted in the platform's underside, with the mouse ball in contact with the surface of travel, to help the host to keep track of the platform's current position. A single chip microcontroller based card has been designed for communication between the platform and the host IBM PC. This is part of the work carried out at the department of Electronics, S.J. College of Engineering, Mysore, India.

  8. 76 FR 34871 - Mobile Barcode Promotion

    Science.gov (United States)

    2011-06-15

    ...mailpiece. The mobile barcodes must be used for marketing, promotional...readable by a mobile smartphone with...must be used for marketing, promotional...not considered marketing, promotional...Mailpieces with mobile barcodes...

  9. 39 CFR 777.26 - Mobile homes.

    Science.gov (United States)

    2010-07-01

    ...separately from the mobile home.) (b) Replacement Housing Payments. Displaced persons...day occupants of mobile homes qualify for replacement housing payments under § 777.24...replacement housing payments for mobile home owners...

  10. 77 FR 41331 - Commercial Mobile Alert System

    Science.gov (United States)

    2012-07-13

    ...Testing Requirements for the Commercial Mobile Alert System...final rules to establish a Commercial Mobile Alert System (CMAS), under which the Commercial Mobile Service (CMS...ensure the availability and viability of both gateway...

  11. The mobile bluff at hospitals

    International Nuclear Information System (INIS)

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

  12. Moving towards low carbon mobility

    OpenAIRE

    Givoni, Moshe; Banister, David; Beyazit, Eda; Markovich, Julia; Macmillen, James; Hickman, Robin; Al-chalabi, Malek; Bishop, Justin; Tran, Martino; Akyelken, Nihan; Liu, Jian; Neves, Andre; Schwanen, Tim

    2013-01-01

    The transport sector has been singularly unsuccessful in becoming low carbon and less resource intensive. This book takes an innovative and holistic social, cultural and behavioural perspective, as well as covering the more conventional economic and technological dimensions, to provide a more complete understanding of the mobility and transport system and its progress towards high carbon mobility.

  13. Social Mobility and Educational Selection

    Science.gov (United States)

    Dong, Zefang; Wang, Yanbin; Chen, Wenjiao

    2009-01-01

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

  14. Mobile communications data services marketing

    Directory of Open Access Journals (Sweden)

    Stanislav Maruši?

    2006-12-01

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

  15. Mobile Technology and Liberal Education

    Science.gov (United States)

    Rossing, Jonathan P.

    2012-01-01

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

  16. HTML5 Mobile Development Cookbook

    CERN Document Server

    Chuan, Shi

    2012-01-01

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

  17. Individual mobility: issues and assessment

    Energy Technology Data Exchange (ETDEWEB)

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

    1996-11-01

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

  18. A Mars Sample Return Sample Handling System

    Science.gov (United States)

    Wilson, David; Stroker, Carol

    2013-01-01

    We present a sample handling system, a subsystem of the proposed Dragon landed Mars Sample Return (MSR) mission [1], that can return to Earth orbit a significant mass of frozen Mars samples potentially consisting of: rock cores, subsurface drilled rock and ice cuttings, pebble sized rocks, and soil scoops. The sample collection, storage, retrieval and packaging assumptions and concepts in this study are applicable for the NASA's MPPG MSR mission architecture options [2]. Our study assumes a predecessor rover mission collects samples for return to Earth to address questions on: past life, climate change, water history, age dating, understanding Mars interior evolution [3], and, human safety and in-situ resource utilization. Hence the rover will have "integrated priorities for rock sampling" [3] that cover collection of subaqueous or hydrothermal sediments, low-temperature fluidaltered rocks, unaltered igneous rocks, regolith and atmosphere samples. Samples could include: drilled rock cores, alluvial and fluvial deposits, subsurface ice and soils, clays, sulfates, salts including perchlorates, aeolian deposits, and concretions. Thus samples will have a broad range of bulk densities, and require for Earth based analysis where practical: in-situ characterization, management of degradation such as perchlorate deliquescence and volatile release, and contamination management. We propose to adopt a sample container with a set of cups each with a sample from a specific location. We considered two sample cups sizes: (1) a small cup sized for samples matching those submitted to in-situ characterization instruments, and, (2) a larger cup for 100 mm rock cores [4] and pebble sized rocks, thus providing diverse samples and optimizing the MSR sample mass payload fraction for a given payload volume. We minimize sample degradation by keeping them frozen in the MSR payload sample canister using Peltier chip cooling. The cups are sealed by interference fitted heat activated memory alloy caps [5] if the heating does not affect the sample, or by crimping caps similar to bottle capping. We prefer cap sealing surfaces be external to the cup rim to prevent sample dust inside the cups interfering with sealing, or, contamination of the sample by Teflon seal elements (if adopted). Finally the sample collection rover, or a Fetch rover, selects cups with best choice samples and loads them into a sample tray, before delivering it to the Earth Return Vehicle (ERV) in the MSR Dragon capsule as described in [1] (Fig 1). This ensures best use of the MSR payload mass allowance. A 3 meter long jointed robot arm is extended from the Dragon capsule's crew hatch, retrieves the sample tray and inserts it into the sample canister payload located on the ERV stage. The robot arm has capacity to obtain grab samples in the event of a rover failure. The sample canister has a robot arm capture casting to enable capture by crewed or robot spacecraft when it returns to Earth orbit

  19. Developing Online Promotion Mix For Mobile Application

    OpenAIRE

    Dieu Hong Tran, Thi

    2013-01-01

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

  20. THE IMPACT OF INTERNET AND MOBILE BANKING

    Directory of Open Access Journals (Sweden)

    R. Sundhararaman

    2015-03-01

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

  1. Distinctive Features of Mobile Messages Processing

    OpenAIRE

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

    2007-01-01

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

  2. Factors Influencing the Quality of Mobile Applications

    OpenAIRE

    Alin ZAMFIROIU

    2014-01-01

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

  3. Tracking of Mobile Devices Through Bluetooth Contacts

    OpenAIRE

    Ristanovic, Nikodin; Tran, Dang Khoa; Le Boudec, Jean-yves

    2010-01-01

    We investigate if it is possible to reconstruct a mobile phone’s mobility using its Bluetooth contacts with other mobile devices, some of which are equipped with GPS receivers. Our data mining analysis, based on two different data sets, shows that in certain environments coarse grained mobility of a significant portion of mobile phones can be obtained using this technique. For this reason, anyone capable of collecting Bluetooth and, if available, GPS logs for a large population of mobile ph...

  4. Mobile Learning System based on Cloud Computing

    OpenAIRE

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

    2013-01-01

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

  5. Scenario Analysis on LTE mobile network virtualization

    OpenAIRE

    Bai, Xue

    2013-01-01

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

  6. Study on payments through mobile phones

    Directory of Open Access Journals (Sweden)

    Anca Ioana ANDREESCU

    2006-01-01

    Full Text Available The evolution of information and communications technology, together with the increasing use of electronic commerce, phones and mobile applications, have facilitated mobile payments to become an alternative payment method for buyers and vendors. Mobile payments offer various opportunities to business environment and became a starting point in the transition from electronic to mobile. This paper aims to analyze the present situation of the mobile payment methods and to identify the effects that mobile payment systems have on electronic commerce.

  7. Gender Differences in German Upward Income Mobility

    OpenAIRE

    Gang, Ira N.; Landon-Lane, John; Yun, Myeong-Su

    2002-01-01

    We examine the upward labor income mobility of men and women in Germany using the GSOEP Cross National Equivalent File. Women have greater overall income mobility. However, utilizing a measure of upward income mobility and calculating the posterior probability that men?s upward income mobility is greater than women?s, we find that men have overall greater upward income mobility. Women have greater upward mobility in the lower initial income classes, in the upper initial income brackets men?s ...

  8. SIMPS: Using Sociology for Personal Mobility

    OpenAIRE

    Borrel, Vincent; Legendre, Franck; De Amorim, Marcelo Dias; Fdida, Serge

    2006-01-01

    Assessing mobility in a thorough fashion is a crucial step toward more efficient mobile network design. Recent research on mobility has focused on two main points: analyzing models and studying their impact on data transport. These works investigate the consequences of mobility. In this paper, instead, we focus on the causes of mobility. Starting from established research in sociology, we propose SIMPS, a mobility model of human crowd motion. This model defines two complimen...

  9. A FRAMEWORK FOR INTEGRATED MOBILE CONTENT RECOMMENDATION

    OpenAIRE

    Worapat Paireekreng; Kok Wai Wong; Chun Che Fung

    2013-01-01

    Content filtering in a mobile recommendation system plays a vital role in providing solution to help mobile device users obtain their desire content. However, mobile content recommendation systems have problems and limitations related to cold start and sparsity. These problems can be viewed as a user’s first time connection to a mobile recommendation system and initial rating of the content in an early stage of the system. Hence, to obtain personalized content for mobile user, mobile content ...

  10. Data Management Infrastructure for the Mobile Web

    DEFF Research Database (Denmark)

    Jensen, Christian SØndergaard

    2009-01-01

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

  11. The Models and Politics of Mobile Media

    OpenAIRE

    Gerard Goggin

    2008-01-01

    In this paper I seek to critically evaluate the models at play in an important area of new media cultures -- mobile media. By 'mobile', I mean the new technologies, cultural practices, and arrangements of production, consumption, and exchange, emerging with hand-held, networked devices --especially those based on mobile cellular networks. These mobile phone technologies are now commonly being framed as media; and so we see the appearance of objects such as mobile television, mobile film, mobi...

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

    International Nuclear Information System (INIS)

    We report room-temperature observations of the quantum conductance corrections caused by the weak localization in graphene films synthesized using solid-state-source chemical vapor deposition. Both Raman spectroscopy and Hall measurements showed strong disorder in the samples with a low mobility of ?430 cm2/V s. The emergence of weak localization at room temperature arises from the competition between the valley-dependent scattering and the thermal dephasing in such low-quality samples, although quantum effects normally appear in the samples that have an ideal structure at cryogenic temperatures. The large disorder in our low-mobility samples unexpectedly preserved the quantum mechanical weak localization

  13. Tracking Human Mobility using WiFi signals

    OpenAIRE

    Sapiezynski, Piotr; Stopczynski, Arkadiusz; Gatej, Radu; Lehmann, Sune

    2015-01-01

    We study six months of human mobility data, including WiFi and GPS traces recorded with high temporal resolution, and find that time series of WiFi scans contain a strong latent location signal. In fact, due to inherent stability and low entropy of human mobility, it is possible to assign location to WiFi access points based on a very small number of GPS samples and then use these access points as location beacons. Using just one GPS observation per day per person allows us ...

  14. Analysis of the Contextual Behaviour of Mobile Subscribers

    Science.gov (United States)

    Verkasalo, Hannu; Salmeron, Borja Jimenez

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

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

    Directory of Open Access Journals (Sweden)

    Mansour A Alwraikat

    2014-06-01

    Full Text Available 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 gender in favor of (female faculty members, academic rank in favor of (instructor, and academic experience in favor of (21 years of experience and more.

  16. On using Mobile IP Protocols

    Directory of Open Access Journals (Sweden)

    Fayza A. Nada

    2006-01-01

    Full Text Available The recent advances in wireless communication technology and the unprecedented growth of the Internet have paved the way for wireless networking and IP mobility. Mobile Internet protocol has been designed within the IETF to support the mobility of users who wish to connect to the Internet and maintain communications as they move from place to place. This study describes and summarizes the current Internet draft for mobile IP (MIPv4 with its major components: agent discovery, registration and tunneling. In addition, we outline the available encapsulation techniques and route optimization procedure. In the end, we describe the design of the new protocol for transparent routing of IPv6 packets to mobile IPv6 nodes operating in the Internet.

  17. Spatiotemporal features of human mobility

    CERN Document Server

    Bagrow, James P

    2012-01-01

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

  18. WEB SERVICES FOR MOBILE COMPUTING

    Directory of Open Access Journals (Sweden)

    Piyush M.Patil , Kushal Gohil, Rohit Madhavi

    2012-05-01

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

  19. Calculating the return on investment of mobile healthcare

    Directory of Open Access Journals (Sweden)

    Bennet Jennifer

    2009-06-01

    Full Text Available Abstract Background Mobile health clinics provide an alternative portal into the healthcare system for the medically disenfranchised, that is, people who are underinsured, uninsured or who are otherwise outside of mainstream healthcare due to issues of trust, language, immigration status or simply location. Mobile health clinics as providers of last resort are an essential component of the healthcare safety net providing prevention, screening, and appropriate triage into mainstream services. Despite the face value of providing services to underserved populations, a focused analysis of the relative value of the mobile health clinic model has not been elucidated. The question that the return on investment algorithm has been designed to answer is: can the value of the services provided by mobile health programs be quantified in terms of quality adjusted life years saved and estimated emergency department expenditures avoided? Methods Using a sample mobile health clinic and published research that quantifies health outcomes, we developed and tested an algorithm to calculate the return on investment of a typical broad-service mobile health clinic: the relative value of mobile health clinic services = annual projected emergency department costs avoided + value of potential life years saved from the services provided. Return on investment ratio = the relative value of the mobile health clinic services/annual cost to run the mobile health clinic. Results Based on service data provided by The Family Van for 2008 we calculated the annual cost savings from preventing emergency room visits, $3,125,668 plus the relative value of providing 7 of the top 25 priority prevention services during the same period, US$17,780,000 for a total annual value of $20,339,968. Given that the annual cost to run the program was $567,700, the calculated return on investment of The Family Van was 36:1. Conclusion By using published data that quantify the value of prevention practices and the value of preventing unnecessary use of emergency departments, an empirical method was developed to determine the value of a typical mobile health clinic. The Family Van, a mobile health clinic that has been serving the medically disenfranchised of Boston for 16 years, was evaluated accordingly and found to have return on investment of $36 for every $1 invested in the program.

  20. Üniversite Ö?rencilerinin Mobil Reklamlara Yönelik Tutumlar?n?n ?zinli Pazarlama Ekseninde ?ncelenmesi(Attitudes of University Students’ Towards Mobile Advertising within the Scope of Permission Marketing

    Directory of Open Access Journals (Sweden)

    Ay?e ?AH?N

    2012-01-01

    Full Text Available Mobile advertising, which means delivering promotion messages directly to mobile phones with different applications, has been the frequently preferred method by the companies in recent years. The rapid increase in the use of mobile phones in our country has increased the interest in this method even further and the use of mobile phones for marketing purposes has become more common.Within the scope of the survey, the attitudes of students towards mobile advertisements are measured with a field research on 800 students studying at Mersin and Celal Bayar Universities. In addition, it has also been researched if there is a difference between the students’ attitudes of these two universities regarding the related information, entertainment, reliability, personalization and irritation dimensions of mobile advertising or not. As a result of the independent two-sample t test, it was concluded that there was a significant difference between the two groups only regarding the entertainment and irritation dimensions of mobile advertising.