WorldWideScience

Sample records for public motorized travel

  1. The Impact of Carsharing on Public Transit and Non-Motorized Travel: An Exploration of North American Carsharing Survey Data

    Directory of Open Access Journals (Sweden)

    Susan Shaheen

    2011-11-01

    Full Text Available By July 2011, North American carsharing had grown to an industry of nearly 640,000 members since its inception on the continent more than 15 years ago. Carsharing engenders changes in member travel patterns both towards and away from public transit and non-motorized modes. This study, which builds on the work of two previous studies, evaluates this shift in travel based on a 6281 respondent survey completed in late-2008 by members of major North American carsharing organizations. Across the entire sample, the results showed an overall decline in public transit use that was statistically significant, as 589 carsharing members reduced rail use and 828 reduced bus use, while 494 increased rail use and 732 increased bus use. Thus for every five members that use rail less, four members use rail more, and for every 10 members that ride a bus less, almost nine members ride the bus more. The people increasing and decreasing their transit use are fundamentally different in terms of how carsharing impacts their travel environment. This reduction, however, is also not uniform across all organizations; it is primarily driven by a minority (three of eleven of participating organizations. At the same time, members exhibited a statistically significant increase in travel by walking, bicycling, and carpooling. Across the sample, 756 members increased walking versus a 568 decrease, 628 increased bicycling versus a 235 decrease, and 289 increased carpooling versus a decrease of 99  study participants. The authors found that 970 members reduced their auto commuting to work, while 234 increased it. Interestingly, when these shifts are combined across modes, more people increased their overall public transit and non-motorized modal use after joining carsharing than decreased it. Data collected on the commute distance of respondents found that carsharing members tend to have shorter commutes than most people living in the same zip code. The analysis also evaluates

  2. 75 FR 65650 - Notice of Closure to Motorized Vehicle Travel on Public Lands in the Big Pole Fire Area in Tooele...

    Science.gov (United States)

    2010-10-26

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF THE INTERIOR Bureau of Land Management Notice of Closure to Motorized Vehicle Travel on Public Lands in the Big Pole Fire Area in Tooele County, UT AGENCY: Bureau of Land Management, Interior. ACTION: Notice of...

  3. Tuning Multiple Motor Travel Via Single Motor Velocity

    Science.gov (United States)

    Xu, Jing; Shu, Zhanyong; King, Stephen J.; Gross, Steven P.

    2012-01-01

    Microtubule-based molecular motors often work in small groups to transport cargos in cells. A key question in understanding transport (and its regulation in vivo) is to identify the sensitivity of multiple-motor-based motion to various single molecule properties. Whereas both single-motor travel distance and microtubule binding rate have been demonstrated to contribute to cargo travel, the role of single-motor velocity is yet to be explored. Here, we recast a previous theoretical study, and make explicit a potential contribution of velocity to cargo travel. We test this possibility experimentally, and demonstrate a strong negative correlation between single-motor velocity and cargo travel for transport driven by two motors. Our study thus discovers a previously unappreciated role of single-motor velocity in regulating multiple-motor transport. PMID:22672518

  4. Auditory perception of motor vehicle travel paths.

    Science.gov (United States)

    Ashmead, Daniel H; Grantham, D Wesley; Maloff, Erin S; Hornsby, Benjamin; Nakamura, Takabun; Davis, Timothy J; Pampel, Faith; Rushing, Erin G

    2012-06-01

    These experiments address concerns that motor vehicles in electric engine mode are so quiet that they pose a risk to pedestrians, especially those with visual impairments. The "quiet car" issue has focused on hybrid and electric vehicles, although it also applies to internal combustion engine vehicles. Previous research has focused on detectability of vehicles, mostly in quiet settings. Instead, we focused on the functional ability to perceive vehicle motion paths. Participants judged whether simulated vehicles were traveling straight or turning, with emphasis on the impact of background traffic sound. In quiet, listeners made the straight-or-turn judgment soon enough in the vehicle's path to be useful for deciding whether to start crossing the street. This judgment is based largely on sound level cues rather than the spatial direction of the vehicle. With even moderate background traffic sound, the ability to tell straight from turn paths is severely compromised. The signal-to-noise ratio needed for the straight-or-turn judgment is much higher than that needed to detect a vehicle. Although a requirement for a minimum vehicle sound level might enhance detection of vehicles in quiet settings, it is unlikely that this requirement would contribute to pedestrian awareness of vehicle movements in typical traffic settings with many vehicles present. The findings are relevant to deliberations by government agencies and automobile manufacturers about standards for minimum automobile sounds and, more generally, for solutions to pedestrians' needs for information about traffic, especially for pedestrians with sensory impairments.

  5. When public service drama travels

    DEFF Research Database (Denmark)

    Jensen, Pia Majbritt; Nielsen, Jakob Isak; Waade, Anne Marit

    2016-01-01

    This article provides a detailed analysis of how the Danish public service broadcaster DR employs external funding for its drama productions. This investigation is carried out in order to discuss the schisms involved when a public service broadcaster – whose traditional obligations arguably pertain...... the last 15 years, our empirical data also show significant new patterns in production culture and international market orientation within DR. Interestingly, however, our study demonstrates the distinctive contribution that precisely DR’s public service remit has made to the quality of its drama...... assessed on the basis of existing theory and expert interviews conducted with significant industry professionals at DR’s Drama Division, DR Sales, German public broadcaster ZDF’s commercial sales arm ZDF Enterprises, and independent Danish production companies Nimbus Film and Miso Film. Specific cases...

  6. Public transport optimisation emphasising passengers’ travel behaviour

    DEFF Research Database (Denmark)

    Jensen, Jens Parbo

    to enhance the operations of public transport while explicitly emphasising passengers’ travel behaviour and preferences. Similar to economic theory, interactions between supply and demand are omnipresent in the context of public transport operations. In public transport, the demand is represented...... the published performance measures and what passengers actually experience, a large academic contribution of the current PhD study is the explicit consideration of passengers’ travel behaviour in optimisation studies and in the performance assessment. Besides the explicit passenger focus in transit planning...... at as the motivator for delay-robust railway timetables. Interestingly, passenger oriented optimisation studies considering robustness in railway planning typically limit their emphasis on passengers to the consideration of transfer maintenance. Clearly, passengers’ travel behaviour is more complex and multifaceted...

  7. When public service drama travels

    DEFF Research Database (Denmark)

    Jensen, Pia Majbritt; Waade, Anne Marit

    This paper will investigate how and to what extent the Danish public service broadcaster DR employs external funding for its drama productions. This investigation is carried out in order to discuss the schisms involved when a public service broadcaster – whose traditional obligations arguably...... such as canned programme export revenues, co-productions, pre-sale and format sale. We therefore believe it is relevant to explore how and to what extent DR makes use of external funding for its drama productions in order to discuss potential advantages and disadvantages in doing so for a public service...... pertain to the national sphere – becomes a player in the international market for television content and, as a consequence, partly reliant on international funding through either co-productions, canned programming export revenues, pre-sale or format sale. DR’s drama productions such as The Killing...

  8. Chaotic operation and chaos control of travelling wave ultrasonic motor.

    Science.gov (United States)

    Shi, Jingzhuo; Zhao, Fujie; Shen, Xiaoxi; Wang, Xiaojie

    2013-08-01

    The travelling wave ultrasonic motor, which is a nonlinear dynamic system, has complex chaotic phenomenon with some certain choices of system parameters and external inputs, and its chaotic characteristics have not been studied until now. In this paper, the preliminary study of the chaos phenomenon in ultrasonic motor driving system has been done. The experiment of speed closed-loop control is designed to obtain several groups of time sampling data sequence of the amplitude of driving voltage, and phase-space reconstruction is used to analyze the chaos characteristics of these time sequences. The largest Lyapunov index is calculated and the result is positive, which shows that the travelling wave ultrasonic motor has chaotic characteristics in a certain working condition Then, the nonlinear characteristics of travelling wave ultrasonic motor are analyzed which includes Lyapunov exponent map, the bifurcation diagram and the locus of voltage relative to speed based on the nonlinear chaos model of a travelling wave ultrasonic motor. After that, two kinds of adaptive delay feedback controllers are designed in this paper to control and suppress chaos in USM speed control system. Simulation results show that the method can control unstable periodic orbits, suppress chaos in USM control system. Proportion-delayed feedback controller was designed following and arithmetic of fuzzy logic was used to adaptively adjust the delay time online. Simulation results show that this method could fast and effectively change the chaos movement into periodic or fixed-point movement and make the system enter into stable state from chaos state. Finally the chaos behavior was controlled.

  9. Characteristics of ring type traveling wave ultrasonic motor in vacuum.

    Science.gov (United States)

    Qu, Jianjun; Zhou, Ningning; Tian, Xiu; Jin, Long; Xu, Zhike

    2009-03-01

    The characteristics of ultrasonic motor strongly depend on the properties of stator/rotor contact interface which are affected by ambient environment. With the developed apparatus, load properties of two ring type traveling wave ultrasonic motors in atmosphere, low vacuum and high vacuum were studied, respectively. Wear of friction material, variations of vacuum degree and the temperature of motor during the experiment were also measured. The results show that load properties of motor A in vacuum were poorer than those in atmosphere, when load torque M(f) was less than 0.55 N m. Compared to motor A, load properties of motor B were affected a little by environmental pressure. Wear of friction material in vacuum was more severe than wear in atmosphere. The temperature of motor in vacuum rose more quickly than it in atmosphere and had not reached equilibrium in 2 h experiment. However, the temperature of motor in atmosphere had reached equilibrium in about forth minutes. Furthermore, outgas was also observed during experiment under vacuum conditions.

  10. Nonlinear dynamic analysis of traveling wave-type ultrasonic motors.

    Science.gov (United States)

    Nakagawa, Yosuke; Saito, Akira; Maeno, Takashi

    2008-03-01

    In this paper, nonlinear dynamic response of a traveling wave-type ultrasonic motor was investigated. In particular, understanding the transient dynamics of a bar-type ultrasonic motor, such as starting up and stopping, is of primary interest. First, the transient response of the bar-type ultrasonic motor at starting up and stopping was measured using a laser Doppler velocimeter, and its driving characteristics are discussed in detail. The motor is shown to possess amplitude-dependent nonlinearity that greatly influences the transient dynamics of the motor. Second, a dynamical model of the motor was constructed as a second-order nonlinear oscillator, which represents the dynamics of the piezoelectric ceramic, stator, and rotor. The model features nonlinearities caused by the frictional interface between the stator and the rotor, and cubic nonlinearity in the dynamics of the stator. Coulomb's friction model was employed for the interface model, and a stick-slip phenomenon is considered. Lastly, it was shown that the model is capable of representing the transient dynamics of the motor accurately. The critical parameters in the model were identified from measured results, and numerical simulations were conducted using the model with the identified parameters. Good agreement between the results of measurements and numerical simulations is observed.

  11. Contact analysis and mathematical modeling of traveling wave ultrasonic motors.

    Science.gov (United States)

    Zhu, Meiling

    2004-06-01

    An analysis of the contact layer and a mathematical modeling of traveling wave ultrasonic motors (TWUM) are presented for the guidance of the design of contact layer and the analyses of the influence of the compressive force and contact layer on motor performance. The proposed model starts from a model previously studied but differs from that model in that it adds the analysis of the contact layer and derives the steady-state solutions of the nonlinear equations in the frequency domain, rather than in the time domain, for the analyses of vibrational responses of the stator and operational characteristics of the motor. The maximum permissible compressive force of the motor, the influences of the contact layer material, the thickness of the contact layer, and the compressive force on motor performance have been discussed. The results show that by using the model, one can understand the influence of the compressive force and contact layer material on motor performance, guide the choice of proper contact layer material, and calculate the maximum permissible compressive force and starting voltage.

  12. General Public Space Travel and Tourism. Volume 2; Workshop Proceedings

    Science.gov (United States)

    ONeil, D. (Compiler); Mankins, J. (Editor); Bekey, I. (Editor); Rogers, T. (Editor); Stallmer, E. (Editor); Piland, W. (Editor)

    1999-01-01

    The Space Transportation Association and NASA conducted a General Public Space Travel study between 1996 and 1998. During the study, a workshop was held at Georgetown University. Participants included representatives from the travel, aerospace, and construction industries. This report is the proceedings from that workshop. Sections include infrastructure needs, travel packages, policy related issues, and potential near-term activities.

  13. Trends in Automobile Travel, Motor Vehicle Fatalities, and Physical Activity: 2003-2015.

    Science.gov (United States)

    McDonald, Noreen C

    2017-05-01

    Annual per-capita automobile travel declined by 600 miles from 2003 to 2014 with decreases greatest among young adults. This article tests whether the decline has been accompanied by public health co-benefits of increased physical activity and decreased motor vehicle fatalities. Minutes of auto travel and physical activity derived from active travel, sports, and exercise were obtained from the American Time Use Survey. Fatalities were measured using the Fatality Analysis Reporting System. Longitudinal change was assessed for adults aged 20-59 years by age group and sex. Significance of changes was assessed by absolute differences and unadjusted and adjusted linear trends. Analyses were conducted in 2016. Daily auto travel decreased by 9.2 minutes from 2003 to 2014 for all ages (pmillennials. Despite suggestions to the contrary, individuals did not switch from cars to active modes nor spend more time in sports and exercise. Maintenance of the safety benefits requires additional attention to road safety efforts, particularly as auto travel increases. Copyright © 2017 American Journal of Preventive Medicine. Published by Elsevier Inc. All rights reserved.

  14. Traveling wave ultrasonic motor using polymer-based vibrator

    Science.gov (United States)

    Wu, Jiang; Mizuno, Yosuke; Tabaru, Marie; Nakamura, Kentaro

    2016-01-01

    With the characteristics of low density, low elastic modulus, and low mechanical loss, poly(phenylene sulfide) (PPS) is a promising material for fabricating lightweight ultrasonic motors (USMs). For the first time, we used PPS to fabricate an annular elastomer with teeth and glued a piece of piezoelectric-ceramic annular disk to the bottom of the elastomer to form a vibrator. To explore for a material suitable for the rotor surface coming in contact with the PPS-based vibrator, several disk-shaped rotors made of different materials were fabricated to form traveling wave USMs. The polymer-based USM rotates successfully as the conventional metal-based USMs. The experimental results show that the USM with the aluminum rotor has the largest torque, which indicates that aluminum is the most suitable for the rotor surface among the tested materials.

  15. 75 FR 2923 - Motor Carrier Safety Advisory Committee Public Meeting

    Science.gov (United States)

    2010-01-19

    ... Federal Motor Carrier Safety Administration Motor Carrier Safety Advisory Committee Public Meeting AGENCY: Federal Motor Carrier Safety Administration (FMCSA), DOT. ACTION: Notice of Motor Carrier Safety Advisory Committee Meeting. SUMMARY: FMCSA announces that its Motor Carrier Safety Advisory Committee (MCSAC)...

  16. 75 FR 72863 - Motor Carrier Safety Advisory Committee Public Meeting

    Science.gov (United States)

    2010-11-26

    ... Federal Motor Carrier Safety Administration Motor Carrier Safety Advisory Committee Public Meeting AGENCY: Federal Motor Carrier Safety Administration, DOT. ACTION: Notice of Motor Carrier Safety Advisory Committee Meeting. SUMMARY: FMCSA announces that the Agency's Motor Carrier Safety Advisory Committee...

  17. 76 FR 12214 - Motor Carrier Safety Advisory Committee Public Meeting

    Science.gov (United States)

    2011-03-04

    ... Federal Motor Carrier Safety Administration Motor Carrier Safety Advisory Committee Public Meeting AGENCY: Federal Motor Carrier Safety Administration, DOT. ACTION: Notice: Announcement of Motor Carrier Safety Advisory Committee meeting; request for comment. SUMMARY: The Federal Motor Carrier Safety...

  18. 75 FR 29384 - Motor Carrier Safety Advisory Committee Public Meeting

    Science.gov (United States)

    2010-05-25

    ... Federal Motor Carrier Safety Administration Motor Carrier Safety Advisory Committee Public Meeting AGENCY: Federal Motor Carrier Safety Administration (FMCSA), DOT. ACTION: Notice of Motor Carrier Safety Advisory Committee meeting. SUMMARY: FMCSA announces that its Motor Carrier Safety Advisory Committee (MCSAC)...

  19. 78 FR 26804 - Notice of Proposed Supplementary Rules for Travel Management on Public Lands in Gunnison...

    Science.gov (United States)

    2013-05-08

    ..., motor home, or trailer for the purpose or apparent purpose of overnight occupancy. Designated travel... mechanical device, such as a bicycle; not powered by a motor. Motorized vehicle means a vehicle that...

  20. Activity and travel choice(s) in multimodal public transport systems

    NARCIS (Netherlands)

    Krygsman, Stephan

    2004-01-01

    Transport planners and policymakers are increasingly considering multimodal public transport and travel demand management (TDM) strategies to stem the unsustainable travel behaviour trends associated with modern-day, car-dominated travel. Multimodal public transport, however, implies that people cha

  1. Reaching the Public through Traveling Exhibitions

    Science.gov (United States)

    Dusenbery, P. B.; Harold, J. B.; Morrow, C. A.

    2004-11-01

    The Space Science Institute (SSI) of Boulder, Colorado has recently developed two museum exhibits called Alien Earths and MarsQuest. It has just started to develop another exhibit called Giant Planets. These exhibitions provide research scientists the opportunity to engage in a number of activities that are vital to the success of these major outreach programs. Alien Earths was developed in partnership with various research missions. The focus of the presentation will be on MarsQuest and Giant Planets. MarsQuest is a 5000 square-foot, \\$3M, traveling exhibition that is now touring the country. The exhibit's second 3-year tour will enable millions of Americans to share in the excitement of the scientific exploration of Mars and learn more about their own planet in the process. The associated planetarium show and education program will also be described, with particular emphasis on workshops to orient museum staff (e.g. museum educators and docents) and workshops for master educators near host museums and science centers. The workshops make innovative connections between the exhibition's interactive experiences and lesson plans aligned with the National Science Education Standards. These exhibit programs are good models for actively involving scientists and their discoveries to help improve informal science education in the museum community and for forging a stronger connection between formal and informal education. The presentation will also discuss how Giant Planets, a proposed 3500 square-foot traveling exhibition on the mysteries and discoveries of the outer planets, will be able to take advantage of the connections and resources that have been developed by the MarsQuest project.

  2. 78 FR 7391 - Motorized Travel Management Plan, Tonto National Forest; Gila, Maricopa, Pinal, and Counties, AZ

    Science.gov (United States)

    2013-02-01

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Motorized Travel Management Plan, Tonto National Forest; Gila, Maricopa, Pinal, and Counties, AZ AGENCY: Forest Service, USDA. ACTION: Notice of intent to prepare an environmental...

  3. Comparison of Walking and Traveling-Wave Piezoelectric Motors as Actuators in Kinesthetic Haptic Devices.

    Science.gov (United States)

    Olsson, Pontus; Nysjo, Fredrik; Carlbom, Ingrid B; Johansson, Stefan

    2016-01-01

    Piezoelectric motors offer an attractive alternative to electromagnetic actuators in portable haptic interfaces: they are compact, have a high force-to-volume ratio, and can operate with limited or no gearing. However, the choice of a piezoelectric motor type is not obvious due to differences in performance characteristics. We present our evaluation of two commercial, operationally different, piezoelectric motors acting as actuators in two kinesthetic haptic grippers, a walking quasi-static motor and a traveling wave ultrasonic motor. We evaluate each gripper's ability to display common virtual objects including springs, dampers, and rigid walls, and conclude that the walking quasi-static motor is superior at low velocities. However, for applications where high velocity is required, traveling wave ultrasonic motors are a better option.

  4. A New Scheme for Experimental-Based Modeling of a Traveling Wave Ultrasonic Motor

    DEFF Research Database (Denmark)

    Mojallali, Hamed; Amini, R.; Izadi-Zamanabadi, Roozbeh

    2005-01-01

    In this paper, a new method for equivalent circuit modeling of a traveling wave ultrasonic motor is presented. The free stator of the motor is modeled by an equivalent circuit containing complex circuit elements. A systematic approach for identifying the elements of the equivalent circuit...

  5. A Novel Traveling Wave Ultrasonic Motor Using a Bar Shaped Transducer

    Institute of Scientific and Technical Information of China (English)

    JIN Jiamei; ZHAO Chunsheng

    2008-01-01

    A novel traveling wave ultrasonic motor was proposed.The structure of the motor is rather simple and different from the conventional traveling wave ultra.sonic motors.Its production processes are very convenient.It is composed of a stator constituted with a ring and a bar shaped transducer and two cone shaped rotors.The rotors were pressed on inner surface of the ring by means of a pre-pressure system.The bar shaped transducer has a sandwich-like configuration,where two sets of piezoelectric element are bolted.One set excites a longitudinal vibration of the bar,and the other set excites a flexural vibration of the bar.The ring's traveling wave excited with the longitudinal vibration and the bending vibration of the bar transducer was simulated with FEM (finite element method).The prototype of the motor was made and investigated experimentally for its performance.Its maximum torque and ro

  6. Analyses of the temperature field of traveling-wave rotary ultrasonic motors.

    Science.gov (United States)

    Lu, Xiaolong; Hu, Junhui; Zhao, Chunsheng

    2011-12-01

    In this paper, the transient and steady-state temperature field of a traveling-wave rotary ultrasonic motor is analyzed by the finite element method, based on a theoretical model of power loss of this motor in rated operation. Using this model, the temperature field of this motor is calculated and the effects of the heat conductivity of friction material, motor size, ambient temperature, and pressure on the temperature field are estimated. The calculated temperature distribution and transient temperature change agree with the experimental results. The variation of heat conductivity of the friction material has little effect on the minimum temperature in the motor but this variation seriously affects the maximum temperature in the motor when the heat conductivity of the friction material is lower than 0.5 W/(m°C). Two indices are defined to express the non-uniformity of temperature field and how quickly the temperature field reaches its steady state for traveling-wave ultrasonic motors of different sizes. It is found that traveling-wave ultrasonic motors with different sizes have different nonuniformity of temperature field and take different amounts of time to reach thermal steady state. The maximum temperature rise is lower when the ambient temperature is higher; the maximum temperature increases as the vacuum degree increases and it is not affected by the vacuum degree when the vacuum degree is too high (<10(-3) Pa).

  7. A rod type linear ultrasonic motor utilizing longitudinal traveling waves: proof of concept

    Science.gov (United States)

    Wang, Liang; Wielert, Tim; Twiefel, Jens; Jin, Jiamei; Wallaschek, Jörg

    2017-08-01

    This paper proposes a non-resonant linear ultrasonic motor utilizing longitudinal traveling waves. The longitudinal traveling waves in the rod type stator are generated by inducing longitudinal vibrations at one end of the waveguide and eliminating reflections at the opposite end by a passive damper. Considering the Poisson’s effect, the stator surface points move on elliptic trajectories and the slider is driven forward by friction. In contrast to many other flexural traveling wave linear ultrasonic motors, the driving direction of the proposed motor is identical to the wave propagation direction. The feasibility of the motor concept is demonstrated theoretically and experimentally. First, the design and operation principle of the motor are presented in detail. Then, the stator is modeled utilizing the transfer matrix method and verified by experimental studies. In addition, experimental parameter studies are carried out to identify the motor characteristics. Finally, the performance of the proposed motor is investigated. Overall, the results indicate very dynamic drive characteristics. The motor prototype achieves a maximum mean velocity of 115 mm s-1 and a maximum load of 0.25 N. Thereby, the start-up and shutdown times from the maximum speed are lower than 5 ms.

  8. A new visco-elastic contact model of traveling wave ultrasonic motor with stator frictional layer

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    A new contact model of traveling wave ultrasonic motor (TWUSM) with a visco-elastic stator frictional layer was presented. In this model, the initial boundaries were revised, and the rotor revolution speed could be calculated iteratively. This model was compared with compliant slider and rigid stator model. The results of motor characteristics simulations showed that the motors based on this model would gain bigger stall torque. Then the friction and wear characteristics of two models were analyzed. The motors based on this model had lower coefficient of friction and better wear resistance.

  9. 76 FR 32390 - Motor Carrier Safety Advisory Committee Public Meeting

    Science.gov (United States)

    2011-06-06

    ... Federal Motor Carrier Safety Administration Motor Carrier Safety Advisory Committee Public Meeting AGENCY: Federal Motor Carrier Safety Administration (FMCSA), DOT. ACTION: Notice of Motor Carrier Safety Advisory... MCSAC will complete action on Task 11-01, regarding Patterns of Safety Violations by Motor...

  10. 77 FR 46555 - Motor Carrier Safety Advisory Committee: Public Meeting

    Science.gov (United States)

    2012-08-03

    ... Federal Motor Carrier Safety Administration Motor Carrier Safety Advisory Committee: Public Meeting AGENCY: Federal Motor Carrier Safety Administration (FMCSA), DOT. ACTION: Notice of meeting of Motor Carrier... major motor carrier safety provisions of the recently enacted Moving Ahead for Progress in the...

  11. Actuating Mechanism and Design of a Cylindrical Traveling Wave Ultrasonic Motor Using Cantilever Type Composite Transducer

    OpenAIRE

    Yingxiang Liu; Weishan Chen; Junkao Liu; Shengjun Shi

    2010-01-01

    BACKGROUND: Ultrasonic motors (USM) are based on the concept of driving the rotor by a mechanical vibration excited on the stator via piezoelectric effect. USM exhibit merits such as simple structure, quick response, quiet operation, self-locking when power off, nonelectromagnetic radiation and higher position accuracy. PRINCIPAL FINDINGS: A cylindrical type traveling wave ultrasonic motor using cantilever type composite transducer was proposed in this paper. There are two cantilevers on the ...

  12. Desing And Implementation Of A Digitally Controlled Compact Speed Driver For Travelling Wave Ultrasonic Motor

    OpenAIRE

    Altan Gencer

    2013-01-01

    In this paper, a compact size digitally controlled speed driver for travelling wave ultrasonic motor was designed and implemented. Although the driver system is light in weight, simple, small in size, it is possible to enter speed and direction digitally as well as tracking the real motor speed, voltage and current on an LCD. The implemented system was tested in a laboratory for different speed and load cases and obtained results are presented.

  13. Desing And Implementation Of A Digitally Controlled Compact Speed Driver For Travelling Wave Ultrasonic Motor

    Directory of Open Access Journals (Sweden)

    Altan Gencer

    2013-05-01

    Full Text Available In this paper, a compact size digitally controlled speed driver for travelling wave ultrasonic motor was designed and implemented. Although the driver system is light in weight, simple, small in size, it is possible to enter speed and direction digitally as well as tracking the real motor speed, voltage and current on an LCD. The implemented system was tested in a laboratory for different speed and load cases and obtained results are presented.

  14. Free Stator Modeling of a Traveling Wave Ultrasonic Motor

    DEFF Research Database (Denmark)

    Izadi-Zamanabadi, Roozbeh; Helbo, Jan; Mojallali, Hamed

    2005-01-01

    An equivalent circuit method describing the free stator of piezoelectric motor is presented in this paper, while the circuit elements have complex values. The mechanical, dielectric and piezoelectric losses associated with the vibrator are accounted for by the imaginary components of the circuit ...

  15. A dendritic mechanism for decoding traveling waves: principles and applications to motor cortex.

    Directory of Open Access Journals (Sweden)

    Stewart Heitmann

    2013-10-01

    Full Text Available Traveling waves of neuronal oscillations have been observed in many cortical regions, including the motor and sensory cortex. Such waves are often modulated in a task-dependent fashion although their precise functional role remains a matter of debate. Here we conjecture that the cortex can utilize the direction and wavelength of traveling waves to encode information. We present a novel neural mechanism by which such information may be decoded by the spatial arrangement of receptors within the dendritic receptor field. In particular, we show how the density distributions of excitatory and inhibitory receptors can combine to act as a spatial filter of wave patterns. The proposed dendritic mechanism ensures that the neuron selectively responds to specific wave patterns, thus constituting a neural basis of pattern decoding. We validate this proposal in the descending motor system, where we model the large receptor fields of the pyramidal tract neurons - the principle outputs of the motor cortex - decoding motor commands encoded in the direction of traveling wave patterns in motor cortex. We use an existing model of field oscillations in motor cortex to investigate how the topology of the pyramidal cell receptor field acts to tune the cells responses to specific oscillatory wave patterns, even when those patterns are highly degraded. The model replicates key findings of the descending motor system during simple motor tasks, including variable interspike intervals and weak corticospinal coherence. By additionally showing how the nature of the wave patterns can be controlled by modulating the topology of local intra-cortical connections, we hence propose a novel integrated neuronal model of encoding and decoding motor commands.

  16. A cylindrical traveling wave ultrasonic motor using a circumferential composite transducer.

    Science.gov (United States)

    Liu, Yingxiang; Liu, Junkao; Chen, Weishan

    2011-11-01

    This paper intends to present and verify a new idea for constructing traveling wave ultrasonic motors that may effectively avoid the drawbacks of conventional traveling wave motors using bonded PZT plates as the exciting elements. In the configuration of the motor's stator, a composite sandwich type transducer is used to excite a traveling wave in a cylinder with two cantilevers as the coupling bridges between the transducer and the cylinder. The design process of the stator is described using the FEM modal analysis method, and the establishment of traveling wave on the cylindrical stator was simulated by FEM transient analysis. To verify the theoretical analysis results, a laser Doppler scanner was employed to test the mode shapes of a prototype stator excited by the longitudinal and bending vibrations respectively. Finally, to validate the design idea, a prototype motor was fabricated and tested; the typical output features are no-load speed of 156 rpm and maximum torque of 0.75 N·m under exciting voltages of 70 V(rms) applied to excite the longitudinal vibration of the transducer and 200 V(rms) applied to excite the bending vibration.

  17. Research on resonance and antiresonance states of free stator of traveling wave ultrasonic motors

    Institute of Scientific and Technical Information of China (English)

    ZU Jiakui; ZHAO Chunsheng

    2004-01-01

    Under the condition of high-power drive, the experimental phenomena of free stator of traveling wave ultrasonic motor takes on strong nonlinear effects. Firstly, its corresponding theories are established to analyze and compare the stator's performances at the resonance and antiresonance states. At the same time, some important parameters, such as resonance/antiresonance frequency, mechanical quality, electro-mechanic coupling, and the relative vibration effect, are selected elaborately to evaluate the vibrational performances of free stator. Then, some experimental schemes based on the laser vibration measurement are designed respectively. Under the different drives conditions, the experimental characterizations of free stator at the resonance and antiresonance states are analyzed systematically. Finally, The investigative results show that the performance at the antiresonance state is much better than that at the resonance state. Some conclusions of this paper can provide novel idea and guidance for the choosing of the operating states and driving modes of traveling wave ultrasonic motor.

  18. Actuating mechanism and design of a cylindrical traveling wave ultrasonic motor using cantilever type composite transducer.

    Directory of Open Access Journals (Sweden)

    Yingxiang Liu

    Full Text Available BACKGROUND: Ultrasonic motors (USM are based on the concept of driving the rotor by a mechanical vibration excited on the stator via piezoelectric effect. USM exhibit merits such as simple structure, quick response, quiet operation, self-locking when power off, nonelectromagnetic radiation and higher position accuracy. PRINCIPAL FINDINGS: A cylindrical type traveling wave ultrasonic motor using cantilever type composite transducer was proposed in this paper. There are two cantilevers on the outside surface of cylinder, four longitudinal PZT ceramics are set between the cantilevers, and four bending PZT ceramics are set on each outside surface of cantilevers. Two degenerate flexural vibration modes spatially and temporally orthogonal to each other in the cylinder are excited by the composite transducer. In this new design, a single transducer can excite a flexural traveling wave in the cylinder. Thus, elliptical motions are achieved on the teeth. The actuating mechanism of proposed motor was analyzed. The stator was designed with FEM. The two vibration modes of stator were degenerated. Transient analysis was developed to gain the vibration characteristic of stator, and results indicate the motion trajectories of nodes on the teeth are nearly ellipses. CONCLUSIONS: The study results verify the feasibility of the proposed design. The wave excited in the cylinder isn't an ideal traveling wave, and the vibration amplitudes are inconsistent. The distortion of traveling wave is generated by the deformation of bending vibration mode of cylinder, which is caused by the coupling effect between the cylinder and transducer. Analysis results also prove that the objective motions of nodes on the teeth are three-dimensional vibrations. But, the vibration in axial direction is minute compared with the vibrations in circumferential and radial direction. The results of this paper can guide the development of this new type of motor.

  19. General Public Space Travel and Tourism. Volume 1; Executive Summary

    Science.gov (United States)

    ONeil, Daniel (Compiler); Bekey, Ivan; Mankins, John; Rogers, Thomas F.; Stallmer, Eric W.

    1998-01-01

    Travel and tourism is one of the world's largest businesses. Its gross revenues exceed $400 billion per year in the U.S. alone, and it is our second largest employer. U.S. private sector business revenues in the space information area now approximate $10 billion per year, and are increasing rapidly. Not so in the human spaceflight area. After spending $100s of billions (1998 dollars) in public funds thereon, and continuing to spend over $5 billion per year, the government is still the only customer for human spaceflight goods and services. Serious and detailed consideration was first given to the possibility of space being opened up to trips by the general public three decades ago, and some initial attempts to do so were made a dozen years ago. But the difficulties were great and the Challenger disaster put an end to them. In recent years professional space tourism studies have been conducted in the United Kingdom, Germany and, especially, Japan. In the U.S., technological progress has been pronounced; we have had nearly a decade's experience in seeing our astronauts travel to-from low Earth orbit (LEO) safely, and we expect to commence assembly of a LEO space station housing a half-dozen people this year. Too, NASA and our space industry now have new and promising space transportation development programs underway, especially the X-33 and X-34 programs, and some related, further generation, basic technology development programs. And five private companies are also working on the design of new surface - LEO vehicles. The first professional space tourism market studies have been conducted in several countries in the past few years, especially in Japan and here. The U.S. study makes it clear that, conceptually, tens of millions of us would like to take a trip to space if we could do so with reasonable safety, comfort and reliability, and at an acceptable price. Initial businesses will address the desires of those willing to pay a greater price and accept a greater

  20. A new traveling wave ultrasonic motor using thick ring stator with nested PZT excitation.

    Science.gov (United States)

    Chen, Weishan; Shi, Shengjun; Liu, Yingxiang; Li, Pei

    2010-05-01

    To avoid the disadvantages of conventional traveling wave ultrasonic motors--lower efficiency PZT working mode of d(31), fragility of the PZT element under strong excitation, fatigue of the adhesive layer under harsh environmental conditions, and low volume of the PZT material in the stator--a new type of traveling wave ultrasonic motor is presented in this paper. Here we implement the stator by nesting 64 PZT stacks in 64 slots specifically cut in a thick metal ring and 64 block springs nested within another 64 slots to produce preloading on the PZT stacks. In this new design, the d33 mode of the PZT is used to excite the flexural vibrations of the stator, and fragility of the PZT ceramics and fatigue of the adhesive layer are no longer an issue. The working principle, FEM simulation, fabrication, and performance measurements of a prototype motor were demonstrated to validate the proposed ideas. Typical output of the prototype motor is no-load speed of 15 rpm and maximum torque of 7.96 N x m. Further improvement will potentially enhance its features by increasing the accuracy in fabrication and adopting appropriate frictional material into the interface between the stator and the rotor.

  1. Validity of three accelerometers during treadmill walking and motor vehicle travel.

    Science.gov (United States)

    Maddocks, Matthew; Petrou, Andrea; Skipper, Lindsay; Wilcock, Andrew

    2010-06-01

    To determine the relative accuracy during treadmill walking and motor vehicle travel of the ActivPAL, PALlite and Digi-Walker accelerometers. Forty healthy volunteers wearing all accelerometers undertook either five treadmill walks (n=20) at speeds ranging between 0.6 and 1.4 m/s or a 15 min motor vehicle journey (n=20). Step counts recorded by each accelerometer were compared with the actual step count determined by video analysis (treadmill walking) or with an actual step count of zero (motor vehicle). Mean percentage measurement error was calculated and compared between devices by one-way ANOVA and Student t test. For treadmill walking, the measurement error was lowest for the ActivPAL, with no significant differences between the ActivPAL and the PALlite monitors. The measurement error was significantly higher for the Digi-Walker at speeds of Digi-Walker (25 steps), but not the ActivPAL monitor (0 steps). The ActivPAL accelerometer accurately measures step count over a range of walking speeds and, unlike the other accelerometers tested, is not falsely triggered by motor vehicle travel.

  2. A finite volume method and experimental study of a stator of a piezoelectric traveling wave rotary ultrasonic motor.

    Science.gov (United States)

    Bolborici, V; Dawson, F P; Pugh, M C

    2014-03-01

    Piezoelectric traveling wave rotary ultrasonic motors are motors that generate torque by using the friction force between a piezoelectric composite ring (or disk-shaped stator) and a metallic ring (or disk-shaped rotor) when a traveling wave is excited in the stator. The motor speed is proportional to the amplitude of the traveling wave and, in order to obtain large amplitudes, the stator is excited at frequencies close to its resonance frequency. This paper presents a non-empirical partial differential equations model for the stator, which is discretized using the finite volume method. The fundamental frequency of the discretized model is computed and compared to the experimentally-measured operating frequency of the stator of Shinsei USR60 piezoelectric motor.

  3. Associations between time spent traveling in motor vehicles and physical activity in Colombian adults from urban areas.

    Science.gov (United States)

    Paez, Diana C; Gomez, Luis F; Mallarino, Christina; Arango, Carlos M; Flórez, Alberto; Nylander, Andrew; Parra, Diana C

    2014-11-01

    Sedentary behaviors are associated with less physical activity. Little evidence exists about this association and its relation with commuting time in Latin America. This study examined the association between time spent traveling in motor vehicles and physical activity levels in the domains of leisure time physical activity and transportation, among Colombian adults in urban areas. A secondary data analysis of the 2010 National Nutrition Survey was conducted. Time spent traveling in motor vehicles and physical activity were assessed using the International Physical Activity Questionnaire. Binary logistic regressions were conducted. Time spent traveling in motor vehicles for 120 minutes or more was reported among 27.6% of the sample. The prevalence of walking and bicycling as a means of transportation for at least 150 minutes per week was 34% and 4.4%, respectively. Achieving at least 150 minutes of leisure time physical activity a week was reported by 18.4% of the sample. This study suggests negative associations between time spent traveling in motor vehicles and active transport, with significant trend associations in stratified analyses. No significant associations were found between time spent traveling in motor vehicles and leisure time physical activity.

  4. A bipedal DNA motor that travels back and forth between two DNA origami tiles.

    Science.gov (United States)

    Liber, Miran; Tomov, Toma E; Tsukanov, Roman; Berger, Yaron; Nir, Eyal

    2015-02-04

    In this work, the successful operation of a dynamic DNA device constructed from two DNA origami building blocks is reported. The device includes a bipedal walker that strides back and forth between the two origami tiles. Two different DNA origami tiles are first prepared separately; they are then joined together in a controlled manner by a set of DNA strands to form a stable track in high yield as confirmed by single-molecule fluorescence (SMF). Second, a bipedal DNA motor, initially attached to one of the two origami units and operated by sequential interaction with "fuel" and "antifuel" DNA strands, moves from one origami tile to another and then back again. The operational yield, measured by SMF, was similar to that of a motor operating on a similar track embedded in a single origami tile, confirming that the transfer across the junction from one tile to the other does not result in dissociation that is any more than that of steps on a single tile. These results demonstrate that moving parts can reliably travel from one origami unit to another, and it demonstrates the feasibility of dynamic DNA molecular machines that are made of more than a single origami building block. This study is a step toward the development of motors that can stride over micrometer distances.

  5. 78 FR 5243 - Motor Carrier Safety Advisory Committee (MCSAC): Public Meeting of Subcommittees

    Science.gov (United States)

    2013-01-24

    ... Federal Motor Carrier Safety Administration Motor Carrier Safety Advisory Committee (MCSAC): Public Meeting of Subcommittees AGENCY: Federal Motor Carrier Safety Administration (FMCSA), DOT. ACTION: Notice of meeting of Motor Carrier Safety Advisory Committee (MCSAC). SUMMARY: FMCSA announces that...

  6. 76 FR 62496 - Motor Carrier Safety Advisory Committee Series of Public Subcommittee Meetings

    Science.gov (United States)

    2011-10-07

    ... Federal Motor Carrier Safety Administration Motor Carrier Safety Advisory Committee Series of Public Subcommittee Meetings AGENCY: Federal Motor Carrier Safety Administration (FMCSA), DOT. ACTION: Notice of meeting. SUMMARY: The FMCSA's Motor Carrier Safety Advisory Committee (MCSAC) will hold working group...

  7. 77 FR 60507 - Motor Carrier Safety Advisory Committee (MCSAC): Public Subcommittee Meeting

    Science.gov (United States)

    2012-10-03

    ... Federal Motor Carrier Safety Administration Motor Carrier Safety Advisory Committee (MCSAC): Public Subcommittee Meeting AGENCY: Federal Motor Carrier Safety Administration (FMCSA), DOT. ACTION: Notice of Meeting of Compliance, Safety, Accountability (CSA) Subcommittee of Motor Carrier Safety...

  8. Final Report Phase I Study to Characterize the Market Potential for Non-Motorized Travel

    Energy Technology Data Exchange (ETDEWEB)

    Hwang, Ho-Ling [ORNL; Reuscher, Tim [Macrosys; Wilson, Daniel W [ORNL; Schmoyer, Richard L [ORNL

    2012-06-01

    The idea of livable communities suggests that people should have the option to utilize non-motorized travel (NMT), specifically walking and bicycling, to conduct their daily tasks. Forecasting personal travel by walk and bike is necessary as part of regional transportation planning, and requires fine detail not only about individual travel, but also on transportation and neighborhood infrastructure. In an attempt to characterize the 'market' potential for NMT, the Office of Planning, Federal Highway Administration (FHWA) funded the Center for Transportation Analysis (CTA) of the Oak Ridge National Laboratory (ORNL) to conduct a study. The objectives of this effort were to identify factors that influence communities to walk and bike and to examine why, or why not, travelers walk and bike in their communities. This study relied on information collected under the 2009 National Household Travel Survey (NHTS) as the major source of data, and was supplemented with data from the American Community Survey (ACS), educational survey, health, employment, and others. Initial statistical screening methods were applied to sort through over 400 potential predictor variables, and examined with various measures (e.g., walk trip per person, walk mileage per person, bike trip per person, bike mileage per person) as the dependent variables. The best geographic level of detail used in the modeling for this study was determined to be the Census block group level for walking and Census tract level for biking. The need for additional supplemental private data (i.e., Walk Scores and Nielsen employment data), and geospatial information that reflects land use and physical environments, became evident after an examination of findings from the initial screening models. To be feasible, in terms of costs and time, the geographic scale of the study region was scaled down to nine selected NHTS add-on regions. These regions were chosen based on various criteria including transit

  9. Bus Operation Monitoring Oriented Public Transit Travel Index System and Calculation Models

    Directory of Open Access Journals (Sweden)

    Jiancheng Weng

    2013-01-01

    Full Text Available This study proposed a two-dimensional index system which is concerned essentially with urban travel based on travel modes and user satisfaction. First, the public transit was taken as an example to describe the index system establishing process. In consideration of convenience, rapid, reliability, comfort, and safety, a bus service evaluation index system was established. The indicators include the N-minute coverage of bus stops, average travel speed, and fluctuation of travel time between stops and bus load factor which could intuitively describe the characteristics of public transport selected to calculate bus travel indexes. Then, combined with the basic indicators, the calculation models of Convenience Index (CI, Rapid Index (RI, Reliability Index (RBI, and Comfort Index (CTI were established based on the multisource data of public transit including the real-time bus GPS data and passenger IC card data. Finally, a case study of Beijing bus operation evaluation and analysis was conducted by taking real bus operation data including GPS data and passenger transaction recorder (IC card data. The results showed that the operation condition of the public transit was well reflected and scientifically classified by the bus travel index models.

  10. ersonal smart travel agent for empowering persons with disabilities using public transport

    Directory of Open Access Journals (Sweden)

    Jörn SCHLINGENSIEPEN

    2015-12-01

    Full Text Available Today's public transport is not easy to use by people having mental problems or those who are disabled. Traffic planning today is powered by online time tables calculating the optimal way to use public transport in terms of time and costs. Therefore usually a graph representing the public transport network is set up and algorithms taken from graph theory or operations research are used to find optimal routes. This is not suitable for a group of travellers having constraints in using vehicles, vehicle types or particular stations for health reasons. On the other hand, since most of those people are not able to drive a car on their own, making public transport available and moreover easily usable enable these people to improve their mobility and their quality of life in general. This paper shows an approach developed within the mobile project funded by The German Federal Ministry of economy and energy that allows supporting this group of users during a travel using public transport and undertaking personal constraints in route planning. This allows getting personalized advice during travel and while travel planning. This is implemented by generation of a second graph representing the public transport network not in dimension of time and costs but in preferences and dislike of a given traveller. The second graph is an overlay to the standard graph to get a personalized graph that allows finding a suitable route respecting the constraints of the user.

  11. Promoting public transport as a subscription service: Effects of a free month travel card

    DEFF Research Database (Denmark)

    Thøgersen, John

    2009-01-01

    alone or together with a customised travel plan or a planning intervention. A control group receiving no intervention was also included. Attitudinal variables, car habits and travel behaviour were measured before and immediately after the intervention and again six months later. The only intervention...... that had an effect was the free month travel card, which led to a significant increase in commuting by public transport.As expected, the effect was mediated through a change in behavioural intentions rather than a change in perceived constraints. As expected, the effect became weaker when the promotion...... on a solid behaviouraltheoretical framework. By measuring important antecedents and mediators, the applied approach offers important insights not only on what behavioural outcomes were produced by the intervention, but why they were produced. Copenhagen car owners received a free month travel card, either...

  12. Novel modeling technique for the stator of traveling wave ultrasonic motors.

    Science.gov (United States)

    Pons, José L; Rodríguez, Humberto; Ceres, Ramón; Calderón, Leopoldo

    2003-11-01

    Traveling wave ultrasonic motors (TWUM) are a promising type of piezoelectric transducers, which are based on the friction transmission of mechanical propagating waves. These waves are excited on the stator by using high Q piezoelectric ceramics. This article presents a modeling strategy, which allows for a quick and precise modal and forced analysis of the stator of TWUM. First-order shear deformation laminated plate theory is applied to annular subdomains (super-elements) of the stator. In addition to shear deformations, the model takes into account the effect of rotary inertia, the stiffness contribution of the teeth, and the linear varying thickness of the stator. Moreover, the formulation considers a more realistic function for the electric field inside the piezoelectric ceramic, i.e., a linear function, instead of the generally assumed constant electric field. The Ritz method is used to find an approximated solution for the dynamic equations. Finally, the modal response is obtained and compared against the results from classical simplified models and the finite element method. Thus, the high accuracy and short computation times of the novel strategy were demonstrated.

  13. Facilitators for travelling with local public transport among people with mild cognitive limitations after stroke.

    Science.gov (United States)

    Ståhl, Agneta; Månsson Lexell, Eva

    2017-01-24

    Previous research of how people with stroke manage public transport has mainly focused on barriers due to physical limitations whereas the influence of cognitive limitations is scarce. There is also a lack of knowledge of facilitators that can help to overcome these barriers. The aim of this study was to describe facilitators for travelling with public transport, e.g. local buses, among people with mild cognitive limitations after stroke. A multiple case study research design was used, where quantitative and qualitative data were utilized, and analysed according to a mixed methods design. The case descriptions reveal how people with mild cognitive limitations after stroke manage their trips but constantly have to be prepared to solve problems to unexpected events. Personal characteristics and other individual strategies together with support and solutions from society were important facilitators for travelling with bus. This study takes a new approach by specifically describing facilitators for travelling with public transport among people with mild cognitive limitations after stroke. To facilitate participation in society for this particular traveller group, occupational therapists have an important role when new technology and interventions that target bus travels, and other modes of transport are developed.

  14. 75 FR 66718 - Helena National Forest; Montana; Blackfoot Travel Plan EIS

    Science.gov (United States)

    2010-10-29

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Helena National Forest; Montana; Blackfoot Travel Plan EIS AGENCY: Forest Service, USDA... the existing motorized public access routes and prohibitions within the Blackfoot travel planning...

  15. Examining the Potential Travellers in Catchment Areas for Public Transport

    DEFF Research Database (Denmark)

    Landex, Alex; Hansen, Stephen

    2006-01-01

    The paper presents a method to examine the catchment areas for stops in high quality public transport systems based on the actual street network in the examined area. This is achieved by implementing the service area functions from the ArcGIS extension Network Analyst. The method is compared...... to a more simple method using only the Euclidean distance from the examined stop and the paper describes the differences in detail-level of the results. Furthermore, the paper describes how the Network Analyst method can be use to examine improvements in the catchment areas by adding extra entrances...... to stations or by making changes in the street network around the station. It is concluded that the Network Analyst method improves the detail-level and accuracy in catchment area analyses. It is these improvements which makes it possible to examine changes in station entrances and/or street network....

  16. Modelling of the travelling wave piezoelectric motor stator: an integrated review and new perspective

    Directory of Open Access Journals (Sweden)

    Rodríguez, H.

    2004-06-01

    Full Text Available Articles from different areas which are closely related to the modelling of the stator of travelling wave ultrasonic motors (TWUMs are reviewed in this work. Thus, important issues relevant to this problem are identified from the areas of vibration of annular plates, laminated plate theories, and modelling of piezoelectric transducers. From this integrated point of view, it becomes clear that there are some very important issues yet to be addressed in the modelling of TWUMs. Firstly, the influence of material properties and stator dimensions on output efficiency, electromechanical coupling coefficients (EMCC and maximum output energy is to be investigated in more detail. Secondly, the modelling of the electric potential field (by explicitly including the charge equation for TWUMs seems to be a must for better prediction of displacements and electric fields close to the resonance, as suggested by some recent works [1]. Moreover, the improvement of current models by using shear deformation (or higher order laminated plate theories (LPTs in conjunction with approximated methods of solution are discussed. In addition to analytical models, those works using Finite Element and Finite difference Methods (FEM and FDM for the modelling and simulation of the TWUM stator dynamics are reviewed.

    En este trabajo se realiza una revisión de los trabajos de investigación realizados en diversas áreas sobre el modelado del estátor de los motores ultrasónicos de onda viajera (TWUMs. Entre los problemas relevantes que se han estudiado podemos citar la vibración de placas anulares, las teorías de placas laminadas y el modelado de transductores piezoeléctricos. A raíz de este punto de vista integral se hace manifiesto que todavía quedan asuntos importantes que estudiar en el modelado de los TWUMs. En primer lugar, la influencia de las propiedades del material y las dimensiones del estátor en la eficiencia del motor, los coeficientes de acoplamiento

  17. A novel two-degree-of-freedom spherical ultrasonic motor using three travelling-wave type annular stators

    Institute of Scientific and Technical Information of China (English)

    王剑; 胡锡幸; 王班; 郭吉丰

    2015-01-01

    In order to promote the tolerance and controllability of the multi-degree-of-freedom (M-DOF) ultrasonic motor, a novel two-degree-of-freedom (2-DOF) spherical ultrasonic motor using three traveling-wave type annular stators was put forward. Firstly, the structure and working principle of this motor were introduced, especially a spiral spring as the preload applied component was designed for adaptive adjustment. Then, the friction drive model of 2-DOF spherical motor was built up from spatial geometric relation between three annular stators and the spherical rotor which was used to analyze the mechanical characteristics of the motor. The optimal control strategy for minimum norm solution of three stators’ angular velocity was proposed, using Moore-Penrose generalized inverse matrix. Finally, a 2-DOF prototype was fabricated and tested, which ran stably and controllably. The maximum no-load velocity and stall torque are 92 r/min and 90 mN·m, respectively. The 2-DOF spherical ultrasonic motor has compact structure, easy assembly, good performance and stable operation.

  18. Pre-travel malaria chemoprophylaxis counselling in a public travel medicine clinic in São Paulo, Brazil.

    Science.gov (United States)

    Chaves, Tânia do Socorro Souza; Monteiro, Wuelton Marcelo; Alves, Jessé Reis; Lacerda, Marcus; Lopes, Marta Heloisa

    2017-02-07

    Malaria is one of the most prevalent parasitic diseases in the world and represents a threat to travellers visiting endemic areas. Chemoprophylaxis is the prevention measure used in travel medicine, avoiding clinical manifestations and protecting against the development of severe disease and death. Retrospective and descriptive analysis of malaria prevention data in travellers was recorded from a travel medicine clinic in São Paulo, Brazil, between January 2006 and December 2010. All the medical records of travellers, who had travelled to areas with risk of disease transmission, including Brazil, were analysed. Demographic characteristics of travellers, travel details and recommendations for preventing malaria were also seen. During the study period, 2836 pre-travel consultations were carried out on 2744 individuals (92 were consulted twice). The most common reasons for travelling were tourism and work. The most common destinations were Africa (24.5%), Europe (21.2%), Asia (16.6%) and locations within Brazil (14.9%). In general prophylaxis against malaria was recommended in 10.3% of all the consultations. African destinations vs Asian, Brazilian and other destinations and length of stay ≤30 days were independently associated with the higher odds of chemoprophylaxis recommendation after the logistic regression. The prophylaxis against malaria was recommended in 10.3% of the consultations. The authors believe that a coherent measure of malaria prevention in Brazil and for international travellers would be to recommend for all parts of the North Brazil, avoidance of mosquito bites and immediate consultation of a physician in case of fever during or after the journey is recommended.

  19. 76 FR 14014 - Public Roundtables: Protecting Consumers in the Sale and Leasing of Motor Vehicles

    Science.gov (United States)

    2011-03-15

    ... Public Roundtables: Protecting Consumers in the Sale and Leasing of Motor Vehicles AGENCY: Federal Trade... pertaining to motor vehicle sales and leasing, the FTC is hosting a series of public roundtables in 2011. The... interested parties to discuss consumer protection issues in connection with motor vehicle sales and...

  20. 49 CFR 369.10 - Public release of motor carrier of property data.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 5 2010-10-01 2010-10-01 false Public release of motor carrier of property data... REGULATIONS REPORTS OF MOTOR CARRIERS § 369.10 Public release of motor carrier of property data. (a) In general. Unless otherwise provided in this section, the data contained in a report filed under §...

  1. Integrated Traffic Information Service System for Public Travel Based on Smart Phones Applications: A Case in China

    Directory of Open Access Journals (Sweden)

    Chonghua Zhou

    2013-11-01

    Full Text Available Owing to its outstanding performance and rich features, Smart phones have been the rapid development over the past decade, more and more people love to use its mobile Application to process the day-to-day affairs instead of PC, including the normal call and Short Messaging Service, Personal Information Management, send and receive e-mail, browse Web, multimedia Applications and online shopping. In April 2011, the Taipei people began to use the free smart phone Apps “Good Travel in Taipei” to check the real-time traffic information of Taipei City Department of Transportation and get the best route plans according to your location, the Apps software brings together road, bus, subway, bike, high-speed rail, airport, parking and other traffic information, can be easily, simple and fast delivery to the public. The papers will introduce the case of “Good Travel in Taipei” firstly, then Zhengzhou is as an example in China to illustrate the Application of integrated traffic information service system for public travel based on smart phones, we hope it can provide a reference for the future construction of the similar mobile App of traffic information service system in the other cities for public travel.

  2. 行波超声波电动机混沌建模与分析%Chaos Modeling and Analysis of Traveling Wave Ultrasonic Motor

    Institute of Scientific and Technical Information of China (English)

    李文娟; 史敬灼

    2012-01-01

    作为一个复杂的非线性动力学系统,在一定的参数范围和外部输入条件下,行波超声波电动机系统存在复杂的混沌运动,但至今未见相关研究.在建立行波超声波电动机非线性混沌分析模型基础上,分析行波超声波电动机转速控制系统的Lyapunov指数谱、分岔图及电压相对于转速的轨迹图等非线性运行特性,为超声波电动机的混沌控制及反控制研究奠定了基础.%The traveling wave ultrasonic motor, which is a nonlinear dynamic system, can exhibit a variety of chaotic phenomenon under some choices of system parameters and external inputs, and its chaotic characteristics have not been studied until now. Based on the non-linear chaos model of a traveling wave ultrasonic motor, its nonlinear characteristics were analyzed with respect to the bifurcation diagram, Lyapunov exponent map and the locus of voltage relative to speed. The results show that the traveling wave ultrasonic motor has chaos characteristic under certain working condition. The theoretic foundation was established for the control and anti-control of chaos in traveling wave ultrasonic motor.

  3. Promoting public transport as a subscription service: Effects of a free month travel card

    DEFF Research Database (Denmark)

    Thøgersen, John

    2009-01-01

    alone or together with a customised travel plan or a planning intervention. A control group receiving no intervention was also included. Attitudinal variables, car habits and travel behaviour were measured before and immediately after the intervention and again six months later. The only intervention...... offer had expired, but an effect was still evident five months later. Possible reasons and implications of this are discussed....

  4. 78 FR 66420 - Proposed Enhancements to the Motor Carrier Safety Measurement System (SMS) Public Web Site

    Science.gov (United States)

    2013-11-05

    ... System (SMS) Public Web Site AGENCY: Federal Motor Carrier Safety Administration (FMCSA), DOT. ACTION... enhancements to the display of information on the Agency's Safety Measurement System (SMS) public Web site... and Fitness Electronic Records System (SAFER) Web site. Displaying current insurance and authority...

  5. 78 FR 76391 - Proposed Enhancements to the Motor Carrier Safety Measurement System (SMS) Public Web Site

    Science.gov (United States)

    2013-12-17

    ... System (SMS) Public Web Site AGENCY: Federal Motor Carrier Safety Administration (FMCSA), DOT. ACTION... Safety Measurement System (SMS) public Web site. On December 6, 2013, Advocates ] for Highway and Auto... Management System Number FMCSA-2013-0392 by any of the following methods: Federal eRulemaking Portal: http...

  6. Comparison of motor and cognitive performance of children attending public and private day care centers

    Directory of Open Access Journals (Sweden)

    Mariana M. Santos

    2013-12-01

    Full Text Available BACKGROUND: Given that environmental factors, such as the school environment, can influence child development, more attention should be paid to the development of children attending day care centers. OBJECTIVE: Todetermine whether there are differences in the gross motor, fine motor, or cognitive performances of children between 1 and3 years-old of similar socioeconomic status attending public and private day care centers full time. METHOD: Participants were divided into 2 groups, 1 of children attending public day care centers (69 children and another of children attending private day care centers (47 children. All children were healthy and regularly attended day care full time for over 4 months. To assess cognitive, gross and fine motor performance, the Bayley Scales of Infant and Toddler Development III was used. The Mann-Whitney test was used for comparative analyses between groups of children between 13 and 24 months, 25 and 41 months, and 13 and 41 months. RESULTS: Children in public day care centers exhibited lower scores on the cognitive development scale beginning at 13 months old. The fine and gross motor performance scores were lower in children over the age of 25 months attending public centers. Maternal education was not related to the performance of children in either group. CONCLUSION: The scores of cognitive performance as well as fine and gross motor performance of children of similar socioeconomic status who attend public day care centers are lower than children attending private daycare centers.

  7. Comparison of motor and cognitive performance of children attending public and private day care centers

    OpenAIRE

    Santos,Mariana M.; Carolina Corsi; Marques, Luisa A. P.; Nelci A. C. F. Rocha

    2013-01-01

    BACKGROUND: Given that environmental factors, such as the school environment, can influence child development, more attention should be paid to the development of children attending day care centers. OBJECTIVE: Todetermine whether there are differences in the gross motor, fine motor, or cognitive performances of children between 1 and3 years-old of similar socioeconomic status attending public and private day care centers full time. METHOD: Participants were divided into 2 groups, 1 of...

  8. Predictors for the uptake of recommended vaccinations in Mecca travelers who visited the Public Health Service Amsterdam for mandatory meningitis vaccination.

    Science.gov (United States)

    Keles, Havva; Sonder, Gerard J B; van den Hoek, Anneke

    2011-01-01

    Hajj, the pilgrimage to Mecca, is one of the obligatory religious duties of Islam. The travel clinic of the Public Health Service (PHS) Amsterdam administers vaccinations, including the required meningitis ACYW135 vaccine, and provides travelers with individual recommendations for all their travels. We extracted all data from the PHS database pertaining to Muslims who visited the clinic before travel to Mecca. From 2001 to 2009, the characteristics are described and trends are analyzed retrospectively. Acceptance of dTP vaccine was used as a proxy for acceptance of recommended vaccinations. For the years 2007 to 2009, predictive factors for the acceptance of advised vaccinations are analyzed. From 2001 to 2009, significantly more women and people older than 50 years of age traveled to Mecca. Since 2007, only 527 of 2,156 (24%) of those who were advised to take vaccines accepted the recommendation. Independent factors for acceptance were being female, of younger age, and being less healthy. Specifically, Mecca travelers with heart disorders and with liver or gastrointestinal disorders accepted recommended vaccinations more often than those without. Only a quarter of Mecca travelers who visit the travel clinic for their mandatory meningitis vaccination also take other, recommended, vaccinations. To improve the acceptance rate, Islamic organizations that inform Mecca travelers in preparation for their travel should be supplied with up-to-date advice, not only about the requirements but also about recommended vaccinations and health precautions. © 2011 International Society of Travel Medicine.

  9. 77 FR 62214 - Travel Management Supplemental Environmental Impact Statement (SEIS), Eldorado National Forest...

    Science.gov (United States)

    2012-10-12

    ... Public Wheeled Motorized Travel Management EIS Record of Decision, March 2008 that were found by the... Forest Service Travel Management Supplemental Environmental Impact Statement (SEIS), Eldorado National... supplemental environmental impact statement. SUMMARY: In March 2008, the U.S. Forest Service completed...

  10. Backcountry Travel Emergencies in Arctic Canada: A Pilot Study in Public Health Surveillance.

    Science.gov (United States)

    Young, Stephanie K; Tabish, Taha B; Pollock, Nathaniel J; Young, T Kue

    2016-03-03

    Residents in the Canadian Arctic regularly travel in remote, backcountry areas. This can pose risks for injuries and death, and create challenges for emergency responders and health systems. We aimed to describe the extent and characteristics of media-reported backcountry travel emergencies in two Northern Canadian territories (Nunavut and Northwest Territories). A case-series of all known incidents between 2004 and 2013 was established by identifying events in an online search of two media outlets, Nunatsiaq News and Northern News Services. We identified 121 incidents; these most commonly involved young men, and death occurred in just over 25% of cases. The territories differed in the seasonal patterns. News media provides a partial source of data to estimate the extent and characteristics of backcountry emergencies. This information is needed to improve emergency preparedness and health system responsiveness in the Arctic.

  11. Travel Fever

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    China to become the world’s No.1 tourist destination by 2015 May 19 is a special day in China’s history. On that day 400 years ago,Xu Xiake (1587-1641),wellknown geographer,traveler and explorer of the Ming Dynasty (1368-1644),started a lifelong journey,leading to the publication of the monumental Xu Xiake’s Travel Notes,known for its detailed and accurate geographical information. The book also provided valuable insight into local customs and habits.

  12. 75 FR 50958 - Federal Motor Vehicle Safety Standards; Motorcoach Definition; Occupant Crash Protection

    Science.gov (United States)

    2010-08-18

    ... National Highway Traffic Safety Administration 49 CFR Part 571 RIN 2127-AK56 Federal Motor Vehicle Safety... Action Plan, NHTSA is issuing this NPRM to propose to amend the Federal motor vehicle safety standard... crash must involve a motor vehicle traveling on a traffic way customarily open to the public, and...

  13. Desempenho motor de lactentes frequentadores de berçários em creches públicas Motor performance of infants attending the nurseries of public day care centers

    Directory of Open Access Journals (Sweden)

    Letícia Baltieri

    2010-09-01

    Full Text Available OBJETIVO: Analisar o desempenho motor axial, apendicular e global e sua correlação com as características neonatais, familiares e de tempo de exposição à creche em crianças com idade entre 12-24 meses, frequentadoras de creches públicas. MÉTODOS: Estudo transversal com 40 lactentes (idade média 14,3±2,4 meses frequentadores de creches públicas. Os participantes foram avaliados quanto ao desempenho motor com a Bayley Scales of Infant and Toddler Development-III, a qual possibilita análise do desempenho motor e comparação dos domínios motores axial e apendicular. Foram coletados dados neonatais, familiares e de exposição à creche e pesquisou-se a correlação destes fatores ao desempenho motor. Foi utilizado o teste t pareado para comparar médias e a correlação de Pearson. RESULTADOS: O desempenho motor do grupo esteve, em média, abaixo da referência, com 22,5% das crianças classificadas como suspeitas de atraso nos desempenhos axial e global, contrastando com nenhuma no domínio apendicular. A comparação axial e apendicular apontou diferença significativa, com desempenho axial aquém do apendicular, além de 35% do grupo ter apresentado discrepância significativa entre esses domínios. Não foi encontrada correlação linear entre os domínios motores avaliados e as variáveis neonatais, familiares e de exposição à creche. CONCLUSÕES: O desempenho motor global do grupo esteve abaixo da média de referência, com desempenho motor axial inferior ao apendicular e importante discrepância entre esses. Recomenda-se atenção às habilidades motoras axiais e às oportunidades de exploração que o ambiente em creches pode propiciar, especialmente no decorrer dos dois primeiros anos de vida.OBJECTIVE: To analyze gross, fine and global motor performance and its correlation with neonatal and familial variables and day care exposure among children between 12-24 months of age attending public day care centers. METHODS: This

  14. 77 FR 72296 - Public Meeting of the U.S.-Canada Regulatory Cooperation Council (RCC) Motor Vehicles Working Group

    Science.gov (United States)

    2012-12-05

    ... Cooperation Council (RCC) Motor Vehicles Working Group AGENCY: National Highway Traffic Safety Administration... 30 and 31, 2012, the RCC and its bi-national working groups facilitated stakeholder meetings in Washington, DC. This notice announces a public meeting of the RCC Motor Vehicles Working Group. DATES:...

  15. Traveling Policies: Mobility, Transformation and Continuities in Higher Education Public Policy

    Science.gov (United States)

    Britez, Rodrigo G.

    2012-01-01

    This article presents an assessment of the impact and implications of the international mobilities operating in the national public policy environment. In fact, patterns of transformations that take place in national higher education systems are generating diverse and complex outcomes in different countries, in ways that may preclude a simple…

  16. Traveling Policies: Mobility, Transformation and Continuities in Higher Education Public Policy

    Science.gov (United States)

    Britez, Rodrigo G.

    2012-01-01

    This article presents an assessment of the impact and implications of the international mobilities operating in the national public policy environment. In fact, patterns of transformations that take place in national higher education systems are generating diverse and complex outcomes in different countries, in ways that may preclude a simple…

  17. Modified Motor Vehicles Travel Speed Models on the Basis of Curb Parking Setting under Mixed Traffic Flow

    Directory of Open Access Journals (Sweden)

    Zhenyu Mei

    2012-01-01

    Full Text Available The ongoing controversy about in what condition should we set the curb parking has few definitive answers because comprehensive research in this area has been lacking. Our goal is to present a set of heuristic urban street speed functions under mixed traffic flow by taking into account impacts of curb parking. Two impacts have been defined to classify and quantify the phenomena of motor vehicles' speed dynamics in terms of curb parking. The first impact is called Space impact, which is caused by the curb parking types. The other one is the Time impact, which results from the driver maneuvering in or out of parking space. In this paper, based on the empirical data collected from six typical urban streets in Nanjing, China, two models have been proposed to describe these phenomena for one-way traffic and two-way traffic, respectively. An intensive experiment has been conducted in order to calibrate and validate these proposed models, by taking into account the complexity of the model parameters. We also provide guidelines in terms of how to cluster and calculate those models' parameters. Results from these models demonstrated promising performance of modeling motor vehicles' speed for mixed traffic flow under the influence of curb parking.

  18. Comprehensive care of travelers.

    Science.gov (United States)

    Pust, R E; Peate, W F; Cordes, D H

    1986-12-01

    Travel, especially if it is international, often means major changes for the family. Family physicians should assess the epidemiologic risk and psychosocial significance of travel or relocation in light of the family's life-cycle stage and antecedent health. Using core references, which are kept current in partnership with public health agencies, family physicians are able to provide comprehensive immunization, medications, and patient education for all travel risks. Families are given medical record summaries and recommended sources of care at their destination. Eight weeks after their return patients are reassessed for newly acquired illness and helped to integrate the perspectives gained during the travel into the family's future dynamics. Taking advantage of growing travel medicine opportunities, family medicine educators should base the care of travelers and teaching of residents on defined competence priorities. Travelers' health provides a mutually rewarding model of shared care with public health consultants in the community medicine curriculum.

  19. Time spent traveling in motor vehicles and its association with overweight and abdominal obesity in Colombian adults who do not own a car.

    Science.gov (United States)

    Flórez Pregonero, Alberto; Gómez, Luis Fernando; Parra, Diana C; Cohen, Daniel D; Arango Paternina, Carlos Mario; Lobelo, Felipe

    2012-06-01

    This study examined associations between time spent traveling in motor vehicles per week (TSTMV) and BMI and abdominal obesity (AO) among Colombian adults residing in urban areas who do not own car. Secondary data analysis of the 2005 National Nutrition Survey of Colombia was conducted. TSTMV was assessed using the long International Physical Activity Questionnaire. Body composition was measured in 7900 adults. Polytomous and binary logistic regressions were conducted, stratified by gender and adjusted for confounders, including physical activity (PA). Forty-two percent of participants were either overweight or obese according to their BMI, and 22.4% had AO. Males in the middle (10 to 149 min) and highest (>150 min) TSTMV tertiles were more likely to be overweight (POR=1.58, 95% CI=1.13-2.21 and POR=1.55, 95% CI=1.12-2.15 respectively, p-trend=0.012), obese (POR=2.39, 95% CI=1.43-3.99 and POR=1.93, 95% CI=1.22-3.08 respectively, p trend=0.019) and to have AO (POR=1.81, 95% CI=1.18-2.78 and POR=1.73, 95% CI=1.18-2.54 respectively, p-trend=0.009). Associations were not significant in females. TSTMV was positively associated with overweight and AO in adult Colombian males even after adjusting for PA. These findings highlight the potential deleterious health effects of sedentary behaviors such as prolonged traveling time, independently of having met PA recommendations. Copyright © 2012 Elsevier Inc. All rights reserved.

  20. Travel epidemiology: the Saudi perspective.

    Science.gov (United States)

    Memish, Ziad A; Venkatesh, S; Ahmed, Qanta A

    2003-02-01

    The Kingdom of Saudi Arabia occupies four-fifths of the Arabian Peninsula, with a land area of 2 million square kilometres. Saudi Arabia holds a unique position in the Islamic world, as the custodian of the two holiest places of Islam, in Mecca and Medina. Annually, some 2 million Muslims from over 140 countries embark on Hajj. This extraordinary en masse migration is a unique forum for the study of travel epidemiology since the Hajj carries various health risks, both communicable and non-communicable, often on a colossal scale. Non-communicable hazards of the Hajj include stampede and motor vehicle trauma, fire-related burn injuries and accidental hand injury during animal slaughter. Communicable hazards in the form of outbreaks of multiple infectious diseases have been reported repeatedly, during and following the Hajj. Meningococcal meningitis, gastroenteritis, hepatitis A, B and C, and various zoonotic diseases comprise some of the possible infectious hazards at the Hajj. Many of these infectious and non-infectious hazards can be avoided or averted by adopting appropriate prophylactic measures. Physicians and health personnel must be aware of these risks to appropriately educate, immunize and prepare these travellers facing the unique epidemiological challenges of Hajj in an effort to minimize untoward effects. Travel epidemiology related to the Hajj is a new and exciting area, which offers valuable insights to the travel specialist. The sheer scale of numbers affords a rare view of migration medicine in action. As data is continually gathered and both national and international policy making is tailored to vital insights gained through travel epidemiology, the Hajj will be continually safeguarded. Practitioners will gain from findings of travel related epidemiological changes in evolution at the Hajj: the impact of vaccinating policies, infection control policies and public health are afforded a real-world laboratory setting at each annual Hajj, allowing us to

  1. Hypothesis: Is frequent, commercial jet travel by the general public a risk factor for developing cutaneous melanoma? [version 1; referees: 2 approved, 1 approved with reservations

    Directory of Open Access Journals (Sweden)

    Harvey Arbesman

    2015-08-01

    Full Text Available Melanoma incidence has been increasing worldwide over the past 50 years and various risk factors have been identified. Interestingly, multiple studies have shown a multifold increased risk of developing melanoma in jet pilots and airline crew. There has also been a dramatic increase in the availability and frequency of jet travel by the general population during this time period.. Therefore, it is hypothesized that frequent commercial jet travel may represent an additional risk factor for the development of cutaneous melanoma in susceptible individuals of the general public.

  2. The effect of friction reduction in presence of ultrasonic vibrations and its relevance to travelling wave ultrasonic motors.

    Science.gov (United States)

    Storck, H; Littmann, W; Wallaschek, J; Mracek, M

    2002-05-01

    In many ultrasonic applications frictional effects play an important role (e.g. ultrasonic machining, ultrasonic motors). For optimising the applications in terms of quality, efficiency and lifetime it is important to understand the frictional coupling of the vibrating and the non-vibrating part. This contribution is devoted to give an explanation for the reduction of friction forces which is often observed when ultrasonic vibrations are superimposed to macroscopic motions. Usually adopted coefficients of friction are used for modelling such conditions suggesting special frictional mechanisms for high frequency oscillations, whereas the present paper shows that Coulomb's friction law provides a very good description of the observed phenomena if the kinematics of the system is taken into account. Two systems are investigated. In the first system the ultrasonic and macroscopic movements are parallel and in the second they are perpendicular to each other but also within the plane of contact. Both systems were investigated analytically and experimentally using a specially designed test rig. The measurements confirmed the analytically derived equations and therefore the validity of Coulomb's friction law even for ultrasonic conditions.

  3. From research to public policy: the prevention of motor vehicle injuries, childhood drownings, and firearm violence.

    Science.gov (United States)

    Wintemute, G J

    1992-01-01

    The purpose of this article is to review the development of the modern sciences of injury epidemiology and injury prevention and to illustrate the use of applied research in formulating effective public policy. MEDLINE searches were conducted from 1966 to 1990, and bibliographies of articles thus obtained were reviewed. Fugitive sources were identified by multiple means. Motor vehicle fatality rates on a per mile driven basis have been reduced by 50% over the past 25 years, largely through attention to the road environment and design of motor vehicles. Passive restraint systems such as air bags promise further reductions. Drowning has emerged as a leading cause of death among young children. Complete pool fencing is expected to prevent many of these events. Firearm violence, particularly among young people, is rapidly increasing. Firearms are hazardous consumer products but are not addressed as such by our current regulatory structure and intervention agenda. Epidemiologic and other applied research can make important contributions to the development of public policies designed to prevent injury. Such policies often address the design and performance of hazardous products and environments and consider individual behavior change as only a secondary objective.

  4. Connected Traveler

    Energy Technology Data Exchange (ETDEWEB)

    Schroeder, Alex

    2015-11-01

    The Connected Traveler project is a multi-disciplinary undertaking that seeks to validate potential for transformative transportation system energy savings by incentivizing efficient traveler behavior. This poster outlines various aspects of the Connected Traveler project, including market opportunity, understanding traveler behavior and decision-making, automation and connectivity, and a projected timeline for Connected Traveler's key milestones.

  5. Travelers' Health: Pregnant Travelers

    Science.gov (United States)

    ... Zika is present and take precautions to avoid sexual transmission of the virus. If travel cannot be avoided, pregnant women should strictly follow steps to prevent mosquito bites. Additional information, including the most current list of countries and territories where Zika virus is a risk, ...

  6. [Travelers' vaccines].

    Science.gov (United States)

    Ouchi, Kazunobu

    2011-09-01

    The number of Japanese oversea travelers has gradually increased year by year, however they usually pay less attention to the poor physical condition at the voyage place. Many oversea travelers caught vaccine preventable diseases in developing countries. The Vaccine Guideline for Oversea Travelers 2010 published by Japanese Society of Travel Health will be helpful for spreading the knowledge of travelers' vaccine and vaccine preventable diseases in developing countries. Many travelers' vaccines have not licensed in Japan. I hope these travelers' vaccines, such as typhoid vaccine, meningococcal vaccine, cholera vaccine and so on will be licensed in the near future.

  7. 75 FR 39251 - Control of Air Pollution From New Motor Vehicles: Announcement of Public Workshop for Heavy-Duty...

    Science.gov (United States)

    2010-07-08

    ... AGENCY Control of Air Pollution From New Motor Vehicles: Announcement of Public Workshop for Heavy-Duty... manufacturers have recently begun utilizing a NO X emission control technology called selective catalyst... ensure, among other things, that SCR-equipped engines are designed to properly control emissions as...

  8. Connected Traveler

    Energy Technology Data Exchange (ETDEWEB)

    2016-06-01

    The Connected Traveler framework seeks to boost the energy efficiency of personal travel and the overall transportation system by maximizing the accuracy of predicted traveler behavior in response to real-time feedback and incentives. It is anticipated that this approach will establish a feedback loop that 'learns' traveler preferences and customizes incentives to meet or exceed energy efficiency targets by empowering individual travelers with information needed to make energy-efficient choices and reducing the complexity required to validate transportation system energy savings. This handout provides an overview of NREL's Connected Traveler project, including graphics, milestones, and contact information.

  9. Intergalactic Travel Bureau

    Science.gov (United States)

    Koski, Olivia; Rosin, Mark; Guerilla Science Team

    2014-03-01

    The Intergalactic Travel Bureau is an interactive theater outreach experience that engages the public in the incredible possibilities of space tourism. The Bureau is staffed by professional actors, who play the role of space travel agents, and professional astrophysicists, who play the role of resident scientists. Members of the public of all ages were invited to visit with bureau staff to plan the vacation of their dreams-to space. We describe the project's successful nine day run in New York in August 2013. Funded by the American Physical Society Public Outreach and Informing the Public Grants.

  10. Public health response to commercial airline travel of a person with Ebola virus infection - United States, 2014.

    Science.gov (United States)

    Regan, Joanna J; Jungerman, Robynne; Montiel, Sonia H; Newsome, Kimberly; Objio, Tina; Washburn, Faith; Roland, Efrosini; Petersen, Emily; Twentyman, Evelyn; Olaiya, Oluwatosin; Naughton, Mary; Alvarado-Ramy, Francisco; Lippold, Susan A; Tabony, Laura; McCarty, Carolyn L; Kinsey, Cara Bicking; Barnes, Meghan; Black, Stephanie; Azzam, Ihsan; Stanek, Danielle; Sweitzer, John; Valiani, Anita; Kohl, Katrin S; Brown, Clive; Pesik, Nicki

    2015-01-30

    Before the current Ebola epidemic in West Africa, there were few documented cases of symptomatic Ebola patients traveling by commercial airline, and no evidence of transmission to passengers or crew members during airline travel. In July 2014 two persons with confirmed Ebola virus infection who were infected early in the Nigeria outbreak traveled by commercial airline while symptomatic, involving a total of four flights (two international flights and two Nigeria domestic flights). It is not clear what symptoms either of these two passengers experienced during flight; however, one collapsed in the airport shortly after landing, and the other was documented to have fever, vomiting, and diarrhea on the day the flight arrived. Neither infected passenger transmitted Ebola to other passengers or crew on these flights. In October 2014, another airline passenger, a U.S. health care worker who had traveled domestically on two commercial flights, was confirmed to have Ebola virus infection. Given that the time of onset of symptoms was uncertain, an Ebola airline contact investigation in the United States was conducted. In total, follow-up was conducted for 268 contacts in nine states, including all 247 passengers from both flights, 12 flight crew members, eight cleaning crew members, and one federal airport worker (81 of these contacts were documented in a report published previously). All contacts were accounted for by state and local jurisdictions and followed until completion of their 21-day incubation periods. No secondary cases of Ebola were identified in this investigation, confirming that transmission of Ebola during commercial air travel did not occur.

  11. Epidemiology of traveler's diarrhea.

    Science.gov (United States)

    Castelli, F; Carosi, G

    1995-01-01

    Annually, over 75 million international passengers travel to tropical areas, more than 20 million of whom come from industrialized countries. They experience a high rate of traveler's diarrhea (TD), varying from 20 to 56%, which may result in serious limitations to their activities. The cause of TD is considered to be infectious in the overwhelming majority of cases and, apart from differences in relative importance, the list of responsible microbial agents is fairly constant regardless of geographic origin. The ingestion of contaminated food or water is considered to be the principal mode of transmission of the enteric pathogens of TD. Several factors have been proposed as playing a role in the etiogenesis of diarrhea in travelers, including personal (age, socioeconomic status, body weight, preexisting gastrointestinal illnesses), behavioral (mode of travel, standard of accommodation, eating in public places, dietary errors) and travel-related (destination, duration of stay, country of origin, season) factors, which are reviewed in detail.

  12. Public opinion on motor vehicle-related injury prevention policies: a systematic review of a decade of research.

    Science.gov (United States)

    Debinski, Beata; Clegg Smith, Katherine; Gielen, Andrea

    2014-01-01

    Legislation is an effective strategy for reducing road-related fatalities and injuries. Public opinion can be an impetus for passing new laws and can affect the success of their implementation, but little is known about the current state of public opinion toward existing and proposed road-related policies in the United States. This review describes the scope and results of research on public support for state- and local-level evidence-based motor vehicle- and bicycle-related policies. We identify gaps in our understanding of public support for these policies. Published U.S. literature and all reports from the NHTSA from the past decade (2003-2012) were searched for data on opinions about existing or proposed policies related to motor vehicle or bicycle injury prevention. Twenty-six studies fulfilled the inclusion criteria. In all, studies reported public opinion about 7 injury prevention topic areas: all-terrain vehicles (n = 1), automated enforcement with red light and speed cameras (n = 5), distracted driving (n = 4), drinking and driving (n = 5), graduated driver licensing (n = 7), helmets (n = 7), and seat belts (n = 4). Twenty-three studies focused only on one topic, and 3 sought public opinion about multiple topic areas. The studies revealed generally high levels of support for injury prevention policies in all topic areas. Fifteen studies collected information from national samples, and only 7 studies reported data from the state (n = 5) or local (n = 2) level. There is a relatively small evidence base on public opinion related to motor vehicle- and bicycle-related evidence-based policies; even less is less known for state- or county-specific policies. The findings of this review suggest that the public's opinion toward injury prevention legislation is generally favorable. This information can be used to communicate with the media and policy makers to reinforce the need for effective policy solutions to continuing motor vehicle injury problems. More research

  13. 基于UCC3895的行波型超声波电机驱动器设计%Design of traveling wave rotary ultrasonic motor driver based on UCC3895

    Institute of Scientific and Technical Information of China (English)

    宋人权; 王剑; 郭吉丰

    2012-01-01

    Previous ultrasonic motor driver based on non-intelligent chip is limited by its disadvantage of complex circuit and difficult phase-modulation. Aiming at this problem, the basic principle and characteristics of traveling wave type ultrasonic motor driver was introduced. According to the requirement of ultrasonic motor driven signal,a multi-function adjustable traveling wave type ultrasonic motor driver was designed based on BiCMOS advanced phase shift pulse width modulation(PWM) controller UCC3895. The relevant circuits and experiment waveforms were also provided. Experimental results verify the feasibility of design.%以往的基于非智能芯片的超声波电机驱动器往往存在电路复杂,调相困难等不足,因而限制了其使用范围.针对这一问题,首先简要介绍了行波型超声波电机驱动电路基本原理和性能要求;在比较以往驱动器优缺点的基础上提出了一种基于UUC3895的多功能可调节的行波型超声波电机驱动器,该驱动器基于BiCMOS相移谐振脉宽调制(PWM)控制原理,具有调频、调压和调相功能,并可扩展外部控制器;最后,给出了实验数据与波形图.实验结果验证了该设计的可行性.

  14. Integrated Traffic Information Service System for Public Travel Based on Smart Phones Applications: A Case in China

    OpenAIRE

    Chonghua Zhou; Zhiyong Weng; Chen Xu; Zhizhe Su

    2013-01-01

    Owing to its outstanding performance and rich features, Smart phones have been the rapid development over the past decade, more and more people love to use its mobile Application to process the day-to-day affairs instead of PC, including the normal call and Short Messaging Service, Personal Information Management, send and receive e-mail, browse Web, multimedia Applications and online shopping. In April 2011, the Taipei people began to use the free smart phone Apps “Good Travel in Taipei” to ...

  15. Demanda energética de uma semeadora-adubadora em diferentes velocidades de deslocamento e rotações do motor Energy needs of a planter at different travel and engine speeds

    Directory of Open Access Journals (Sweden)

    João Cleber Modernel da Silveira

    2013-03-01

    Full Text Available A velocidade de operação do trator influencia diversos aspectos, entre eles o consumo de combustível, a capacidade operacional e a qualidade de semeadura. Este trabalho teve como objetivo avaliar a demanda energética de um conjunto trator-semeadora-adubadora em sistema plantio direto, em função das velocidades de deslocamento e rotações no eixo do motor, na semeadura da cultura do milho. Os 12 tratamentos foram constituídos de quatro velocidades de deslocamento, obtidas em função dos escalonamentos de marchas e de três rotações do motor do trator. Durante a semeadura, monitoraram-se a velocidade de operação, a rotação do motor, a força de tração e o consumo horário de combustível. Os resultados mostraram que o requerimento de potência na barra de tração, média, por linha de semeadura, por profundidade do sulco e por área mobilizada aumentou com o aumento da velocidade de operação do conjunto mecanizado. O consumo horário de combustível foi elevado com o aumento da velocidade de operação e da rotação do motor, sendo menor na rotação do motor de 1.500 rpm.The operating speed of the tractor influences various aspects, including fuel consumption, operational capacity and sowing quality. This study aimed to assess the energy needs of a tractor-planter when sowing maize in a no-tillage system, according to its travel speed and the rotation speed of the motor shaft. The 12 treatments consisted of four travel speeds, obtained by staggering the gears, and three tractor-engine rotation speeds. During sowing, the speed of operation, engine speed, the traction force and hourly consumption of fuel were monitored. The results showed that the average power requirement on the drawbar per seeding row, groove depth, and worked area, increased with an increase in the operating speeds of the mechanism. Hourly fuel consumption went up with the increase in operating and engine-rotation speeds, being lowest at a speed of 1,500 rpm.

  16. Game theory approach to optimizing of public transport traffic under conditions of travel mode choice by passengers

    Directory of Open Access Journals (Sweden)

    Mark KORYAGIN

    2014-09-01

    Full Text Available Consideration was given to the problem of making decisions on public transport management. Three parties making decisions were marked out: passenger flow, transport operator and municipal authorities. Passengers choose between public and private transport evaluating the value of time. The value of time is modeled by uniform distribution. The transport operator seeks to maximize the profit by varying the public transport frequency. The decrease in the frequency decreases the passenger flow of the public transport and cost of transportation. It’s important for the municipal authorities to determine the frequency minimizing the time loss of the population and cost of transportation. The existence of the decision concerning the problems of management was proven. The numerical example characterizing the influence of the parameters on the problem solution was given.

  17. Travelling diabetics.

    Science.gov (United States)

    Chełmińska, Katarzyna; Jaremin, Bogdan

    2002-01-01

    During the past several decades, the number of both business and tourist travels has greatly increased. Among them are persons suffering from chronic diseases, including diabetics for whom travels pose the additional health-hazard. Irrespective of better education, self-control and constantly improving quality of specialistic equipment available, diabetics still are the group of patients requiring particular attention. In the case of travelling diabetics, problems may occur concerning the transport and storage of insulin, as well as control of glycaemia, all caused by irregularity of meals, variable diet, physical activity, stress, kinetosis (sea voyages), and the change of time zones. The travel may as well evoke ailments caused by the change of climate and concomitant diseases such as traveller's diarrhoea, malaria, etc. Apart from avoiding glycaemia fluctuations, important for retaining health of diabetics is the prevention of other diseases and carrying the necessary drugs.

  18. Travelers' Health: Travel and Breastfeeding

    Science.gov (United States)

    ... I J K L M N O P Q R S T U V W X Y Z # ... search/groups ). Mothers who plan to use a breast pump while traveling may need an electrical current ... during travel because exclusive breastfeeding means feeding only breast milk, no other foods or drinks, which protects ...

  19. [Travel medicine].

    Science.gov (United States)

    Schubert, S; Grimm, M

    2009-07-01

    Travel medicine deals with travellers' diseases. The target group is therefore distinct from tropical medicine. It has gained in significance due to the increase in tourism and professional work abroad in the last 50 years. Dangerous and widespread diseases in tropical countries, in particular tropical malaria, have come into focus in industrialized countries because of their appearance in travellers. Travel medicine deals not only with infectious or transmittable diseases, but also with the ability of patients with chronic diseases to travel, the medical aspects of flying, as well as the health hazards of professional work or high-risk sports abroad. The risk of disease as a result of travelling can be minimized by advice and prophylactic measures, such as vaccinations and drug prophylaxis against malaria, if indicated. On return, medical symptoms should be investigated promptly to ensure early detection of life-threatening disease courses, particularly tropical malaria, as well as to prevent the occurrence of small-scale epidemics. A small number of diseases can also emerge after several years, such as benign types of malaria, amoebic liver abscess and visceral leishmaniasis (kala-azar). Aids also belongs to these diseases. Therefore, in this era of HIV pandemic travellers concerned should be made aware of the risks.

  20. The influence of gymnastics in motor coordination and reaction time in urban public bus drivers

    Directory of Open Access Journals (Sweden)

    Stela Paula Mezzomo

    2014-12-01

    Full Text Available This study investigated the influence of labour gymnastics (LG on bus drivers' basic skills such as reaction time and gross motor coordination. Sixty male bus drivers (37.06 ± 7.66 years old from two bus lines in the city of Santa Maria (RS took part of this study. The participants were split into two groups, experimental group (EG and control group (CG. Subjects that were part of the EG took part in a LG intervention program, 2-3 times a week, over a year. Gross motor coordination was assessed by BURPEE Protocol (Johnson & Nelson, 1979, whereas reaction time by software providing a visual stimulus. Data normality was checked through Shapiro-Wilk test, which pointed to normal distribution only for the variables simple reaction time (SRT and choice reaction time (CRT in the EG. Therefore the non-parametric Mann-Whitney U test was selected to compare differences between groups. A statistically significant difference for gross motor coordination was found (z= −2.525, p= 0.012, suggesting the effectiveness of LG to improve motor skills. As regards SRT and CRT, no significant difference was found, in spite of better outcomes having been recorded after the LG program.

  1. Travel and migration associated infectious diseases morbidity in Europe, 2008

    NARCIS (Netherlands)

    Field, V.; Gautret, P.; Schlagenhauf, P.; Burchard, G.D.; Caumes, E.; Jensenius, M.; Castelli, F.; Gkrania-Klotsas, E.; Weld, L.; Lopez-Velez, R.; de Vries, P.; von Sonnenburg, F.; Loutan, L.; Parola, P.

    2010-01-01

    Background: Europeans represent the majority of international travellers and clinicians encountering returned patients have an essential role in recognizing, and communicating travel-associated public health risks. Methods: To investigate the morbidity of travel associated infectious diseases in

  2. Travel and migration associated infectious diseases morbidity in Europe, 2008

    NARCIS (Netherlands)

    Field, V.; Gautret, P.; Schlagenhauf, P.; Burchard, G.D.; Caumes, E.; Jensenius, M.; Castelli, F.; Gkrania-Klotsas, E.; Weld, L.; Lopez-Velez, R.; de Vries, P.; von Sonnenburg, F.; Loutan, L.; Parola, P.

    2010-01-01

    Background: Europeans represent the majority of international travellers and clinicians encountering returned patients have an essential role in recognizing, and communicating travel-associated public health risks. Methods: To investigate the morbidity of travel associated infectious diseases in Eur

  3. TRAVEL INFORMATION

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Mauritius Travel From August 31 to September 6, a high- level government delegation from Mauritius visited China. The delegation was headed by the President of Mauritius, Sir Anerood Jugnauth, and included the Minister of Tourism,

  4. 微型化矩形振子近似行波型直线超声波电动机%Quasi-Traveling Wave Ultrasonic Linear Motor Using a Miniature Rectangular Vibrator

    Institute of Scientific and Technical Information of China (English)

    张顺鑫; 李朝东

    2012-01-01

    With the aim of realizing quasi-traveling wave drive in ultrasonic linear micromotor, a novel quasi-traveling wave ultrasonic linear motor using a ring type rectangular vibrator with the size of 39 mmx6 mmxl2. 7 mm was proposed. Combined with the finite element modal analysis, the motor operating principle was described, that the traveling wave was excited and propagated along the ring type rectangular vibrator depending on the superposition of two orthogonal flexural-vi-bration modes with a spatial phase shift of 90 degrees. 7 piezoelectric ceramic elements were used to excite two working modes of the vibrator. In order to amplify the amplitude, the comb-tooth structure was designed in the bottom of the vibrator. The vibrator structure was designed and eigenfrequency degeneration was realized by Finite Element Analysis ( FEA) method. The modal test showed that the design scheme was tenable. The excitation and propagation of quasi-traveling wave was proved by tip rotation direction test. The trial motor gave a maximum driving velocity of 162. 5 mm/s and a maximum load of 8. 5 N,while the excitation frequency was 66 kHz and voltage peak-peak was 160 V. The motor can satisfy the preliminary design objective.%探索了在微型直线超声波电动机中实现近似行波驱动的途径,研制了一种外形尺寸为39 mm×6 mm×12.7 mm的环状矩形振子近似行波型直线超声波电动机.结合电机振子的有限元模态分析,阐述了依靠激发空间相位差为90°的两个正交弯曲振动模态,实现行波在环状矩形振子上被激发和传播的电机运动原理.使用7块压电陶瓷片来分别激发振子的两个工作模态.在振子底部设计了梳齿状结构,以放大振幅.利用有限元法进行结构设计,使两个工作模态的频率简并.通过激光测振,证实了电机振子设计方案的有效性.通过对实际样机的驱动齿旋向测试,初步证实近似行波的形成及传播的存在.初步的样机特

  5. Travelling Concepts

    DEFF Research Database (Denmark)

    Simonsen, Karen-Margrethe

    2013-01-01

    Review of "Travelling Concepts, Metaphors, and Narratives: Literary and Cultural Studies in an Age of Interdisciplinary Research" ed. by Sibylle Baumgarten, Beatrice Michaelis and Ansagar Nünning, Trier; Wissenschaftlicher Verlag Trier, 2012......Review of "Travelling Concepts, Metaphors, and Narratives: Literary and Cultural Studies in an Age of Interdisciplinary Research" ed. by Sibylle Baumgarten, Beatrice Michaelis and Ansagar Nünning, Trier; Wissenschaftlicher Verlag Trier, 2012...

  6. [Traveller's diarrhoea].

    Science.gov (United States)

    Vila, Jordi; Oliveira, Ines; Zboromyrska, Yuliya; Gascon, Joaquim

    2016-11-01

    Traveller's diarrhoea (TD) is acquired primarily through ingestion of food and drinks contaminated with pathogens that cause diarrhoea. They can be bacteria, protozoa, helminths, and viruses. Globally, the most common causes of TD are two pathotypes of Escherichia coli (enterotoxigenic and enteroaggregative) and Campylobacter, although there are significant variations by geographic area visited. Most TD occurs in individuals traveling to low-middle income countries. The type of travel, length of stay, traveller's age, and the presence of certain underlying conditions are important risk factors to consider for the acquisition of TD. While TD is usually a mild and self-limiting disease, half of travellers with TD experience some limitation of activities during their trip, while up to 10% will experience persistent diarrhoea or other complications. The purpose of this article is to provide an updated microbiological, epidemiological, and clinical profile of traveller's diarrhoea, including known risk factors, as well as to make recommendations on the prevention and treatment of TD. Copyright © 2016 Elsevier España, S.L.U. and Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica. All rights reserved.

  7. Economic study of a water pumping system for traveling gun machine; Estudo economico de uma adutora, para sistema autopropelido de irrigacao, operando com motor diesel e alcool

    Energy Technology Data Exchange (ETDEWEB)

    Faria, Lessandro Coll; Viola, Marcelo R.; Bilibios, Carolina; Oliveira, Henrique F.E. de; Lima Junior, Joaquim A. de [Universidade Federal de Lavras (UFLA), Lavras, MG (Brazil)

    2009-07-01

    This study aimed at comparing the set-up and operation costs of a water pumping system using engines which run on two different fuels (diesel oil and alcohol) for application in traveling gun machines. The study was carried out by considering fuel prices in Minas Gerais State on 10/11/2008. The results showed that annual costs with diesel oil engines (R$ 67,460.64) were less than those for alcohol engines (R$ 82,608.12). Nevertheless, it is worthwhile to point out that the operation with alcohol engines was found to be viable only when this fuel price does not exceed R$ 1.40 per liter. (author)

  8. The Impact of Policy, Environmental, and Educational Interventions: A Synthesis of the Evidence from Two Public Health Success Stories

    Science.gov (United States)

    Gielen, Andrea C.; Green, Lawrence W.

    2015-01-01

    Motor vehicle safety and tobacco control are among the greatest public health achievements of the 20th century, according to the Centers for Disease Control and Prevention. As the number of miles traveled in the United States multiplied 10 times from the 1920s to the 1990s, the annual motor vehicle crash death rate per vehicle mile traveled…

  9. The Impact of Policy, Environmental, and Educational Interventions: A Synthesis of the Evidence from Two Public Health Success Stories

    Science.gov (United States)

    Gielen, Andrea C.; Green, Lawrence W.

    2015-01-01

    Motor vehicle safety and tobacco control are among the greatest public health achievements of the 20th century, according to the Centers for Disease Control and Prevention. As the number of miles traveled in the United States multiplied 10 times from the 1920s to the 1990s, the annual motor vehicle crash death rate per vehicle mile traveled…

  10. Travelers' Health: Cruise Ship Travel

    Science.gov (United States)

    ... vectorborne diseases such as malaria, dengue, yellow fever, Japanese encephalitis, and Zika are endemic. New diseases might ... environmental conditions, as well as unaccustomed changes in diet and physical activity. Foreign travel may increase the ...

  11. Travelers' Health: Cruise Ship Travel

    Science.gov (United States)

    ... Water Disinfection Infographics for Travelers MERS Health Advisory poster Food and Water: What's Safer Health Advisory: MERS ... cruise ships can vary widely depending on ship size, itinerary, length of cruise, and passenger demographics. Generally, ...

  12. Research on a Linear Piezoelectric Motor Working in Low Frequency with Unlimit Travel Range%一种低频大行程直线型压电电机的研究

    Institute of Scientific and Technical Information of China (English)

    李艳林; 黄卫清

    2009-01-01

    基于叠层式压电陶瓷在低频带范围内的变形幅值大,与驱动电压线性度好且基本不随驱动频率变化的特点,提出并研制了一种低频大行程直线型压电电机.与共振式压电电机相比,该电机在低频范围内输出速度与驱动频率的线性度好,可控性较好.对电机的工作机理进行了分析,同时利用有限元软件对电机的结构进行设计,并试制了原理样机.实验结果表明,电机可在100 Hz~2 kHz的频带工作,其速度在100 Hz~1 kHz的频带内基本和频率成正比,最大空载速度为60 mm/min.%Based on characteristic of piezoelectric stack, such as the amplitude of displacement was big, linear to the driving voltage and almost the same at low frequency, a linear motor based on non-resonant vibration of piezoelectric ceramics stack was investigated. In contrast to the ultrasonic motor with resonant vibration, the speed of this motor was linear to the driving frequency and the control performance was more acceptable at low frequency. The working principle of the motor was presented. The structure was designed by finite element software. The motor could work in the frequency between 100 Hz and 2 kHz with virtually unlimited travel rang. And the highest no-load speed was 60 mm/min. In the frequency between the 100 Hz and 1 kHz, the speed of stator was linear to the driving frequency.

  13. Public transport subsidies. The impacts of regional bus cards on the travel demand and energy use in Finish urban areas

    Energy Technology Data Exchange (ETDEWEB)

    Dargay, J. [Univ. College London (United Kingdom); Pekkarinen, S. [Univ. of Oulu (Finland)

    1996-12-01

    This study is a part of a larger Finnish project financed by the Ministry of Transport and Communications concerned with evaluating the impacts of new integrated fare and ticket policies. The objective of the policy is to encourage a modal shift from cars to public transport, thereby reducing energy use and the harmful environmental effects of transport. The regional bus card systems (RBC) provide the opportunity to purchase a monthly ticket, at a substantial discount of normal fares, which is valid on all buses in an area covering a city centre and the smaller independent communities surrounding. RBC systems are subsidized by both Local Authorities and the state government and are currently operating in over ten urban areas in Finland. The objectives of this research project are: (1) to estimate the fare elasticities of the demand of bus services and the price elasticities of RBC demand, (2) to evaluate the effectiveness of the adopted subsidizing policy and (3) to assess the consequences of the fares policy on energy use in transport. This paper deals specifically with the latter two issues. (EG)

  14. Tracing Airline Travelers for a Public Health Investigation: Middle East Respiratory Syndrome Coronavirus (MERS-CoV) Infection in the United States, 2014.

    Science.gov (United States)

    Regan, Joanna J; Jungerman, M Robynne; Lippold, Susan A; Washburn, Faith; Roland, Efrosini; Objio, Tina; Schembri, Christopher; Gulati, Reena; Edelson, Paul J; Alvarado-Ramy, Francisco; Pesik, Nicki; Cohen, Nicole J

    2016-01-01

    CDC routinely conducts contact investigations involving travelers on commercial conveyances, such as aircrafts, cargo vessels, and cruise ships. The agency used established systems of communication and partnerships with other federal agencies to quickly provide accurate traveler contact information to states and jurisdictions to alert contacts of potential exposure to two travelers with Middle East Respiratory Syndrome Coronavirus (MERS-CoV) who had entered the United States on commercial flights in April and May 2014. Applying the same process used to trace and notify travelers during routine investigations, such as those for tuberculosis or measles, CDC was able to notify most travelers of their potential exposure to MERS-CoV during the first few days of each investigation. To prevent the introduction and spread of newly emerging infectious diseases, travelers need to be located and contacted quickly.

  15. 41 CFR 301-52.14 - What must I do with any travel advance outstanding at the time I submit my travel claim?

    Science.gov (United States)

    2010-07-01

    ... travel advance outstanding at the time I submit my travel claim? 301-52.14 Section 301-52.14 Public Contracts and Property Management Federal Travel Regulation System TEMPORARY DUTY (TDY) TRAVEL ALLOWANCES... § 301-52.14 What must I do with any travel advance outstanding at the time I submit my travel claim? You...

  16. 14 CFR 1204.1600 - Issuance of motor vehicle for home-to-work.

    Science.gov (United States)

    2010-01-01

    ... ADMINISTRATIVE AUTHORITY AND POLICY Temporary Duty Travel-Issuance of Motor Vehicle for Home-to-Work... travel is authorized to travel by Government motor vehicle and the official authorizing the travel determines that there will be a significant savings in time, a Government motor vehicle may be issued at...

  17. Time travel?

    CERN Document Server

    Deser, Stanley D; Deser, Stanley; Jackiw, Roman

    1992-01-01

    To travel into the past, to observe it, perhaps to influence it and correct mistakes of one's youth, has been an abiding fantasy of mankind for as long as we have been aware of a past. Here are described some recent scientific investigations on this topic.

  18. Traveler's Diarrhea

    Science.gov (United States)

    ... probably safe to eat or drink the following:Soft drinks that are carbonated (such as cola).Hot drinks, ... for Staying HealthyInternational travel has its share of health and safety challenges. Talk to your doctor about the area ...

  19. Piezoelectric Torsional Vibration Driven Motor

    Science.gov (United States)

    2000-10-29

    20 which can provide large amplitude rotational motion with a high torque. 21 Piezoelectric ultrasonic motors have been developed using traveling...Motor for High Torque", T. S. Glenn, W.G. Hagwood, SPIE Volume 3041, 4 1997. These piezoelectric ultrasonic motors are of limited application

  20. Plains Traveler

    Science.gov (United States)

    2006-01-01

    10 April 2006 This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows a dust devil traveling across a plain west-southwest of Schiaparelli Crater, in far eastern Sinus Meridiani. The dust devil is casting a shadow toward the northeast, just south (below) of an egg-shaped crater. Location near: 6.4oS, 349.3oW Image width: 3 km (1.9 mi) Illumination from: lower left Season: Southern Summer

  1. Differences in Gross Motor Achievements among Children of Four to Five Years of Age in Private and Public Institutions in Prishtine, Kosovo

    Science.gov (United States)

    Shala, Merita; Bahtiri, Abedin

    2011-01-01

    This study was undertaken in order to examine differences in gross motor achievements among children of four to five years of age as the result of the development of physical education programmes offered by private and public institutions in Kosovo. Research was focused on 118 children, out of which 61 (27 girls, 34 boys) were from the public…

  2. Travel during Pregnancy

    Science.gov (United States)

    ... Events Advocacy For Patients About ACOG Travel During Pregnancy Home For Patients Search FAQs Travel During Pregnancy ... Pregnancy FAQ055, February 2016 PDF Format Travel During Pregnancy Pregnancy When is the best time to travel ...

  3. When public service drama travels

    DEFF Research Database (Denmark)

    Jensen, Pia Majbritt; Waade, Anne Marit

    (Forbrydelsen) and The Bridge (Broen) have in recent years experienced an unprecedented export success. Especially The Killing’s relative success with the British audience in its original version on BBC Four and its sale as a format to the USA, where it was adapted for the cable network AMC, marked...... an interesting shift. It became apparent that DR drama in particular – and Danish television drama in general – had something to offer even to the two most impenetrable television markets in the world. This success, however, has not happened over-night but is a result of a conscious and two-decade long strategy...... on behalf of DR’s Drama Division to open up to international markets and to win more international prizes, all of which has been achieved. The success has also lead to an unprecedented interest in DR’s drama productions and paved the way for alternative and external ways of funding productions...

  4. Travelling with HIV

    DEFF Research Database (Denmark)

    Nielsen, Ulla S; Jensen-Fangel, Søren; Pedersen, Gitte

    2013-01-01

    We aimed to describe travel patterns, extent of professional pre-travel advice and health problems encountered during travel among HIV-infected individuals.......We aimed to describe travel patterns, extent of professional pre-travel advice and health problems encountered during travel among HIV-infected individuals....

  5. A model of multidestination travel

    DEFF Research Database (Denmark)

    Morisugi, H.; Tussyadiah, Iis; Kono, T.

    2006-01-01

    , specifically address the choice of a single destination. This article is intended to explain multiple destination choice using Lancaster's characteristics model and a discussion of model implications of some marketing strategies for destinations as well as for tour operators. The model developed herein...... explains that packages of multiple destinations can create preferable combinations of characteristics for certain travelers. Furthermore, the model provides useful strategies for tour operators in combining destinations into a travel menu or package. © 2006 Sage Publications....

  6. Post-harmonised European National Travel Surveys

    DEFF Research Database (Denmark)

    Christensen, Linda; Sobrino Vázquez, Natalia

    of walking trips rather similar with a higher level of cycling in the Netherlands, more public transport in Switzerland, and more air traffic in Sweden. Normally kilometres per respondent / inhabitant is used for national planning purpose and this is very affected by the share of mobile travellers......Look-up tables are collected and analysed for 12 European National Travel Surveys (NTS) in a harmonized way covering the age group 13-84 year. Travel behaviour measured as kilometres, time use and trips per traveller is compared. Trips per traveller are very similar over the countries whereas...

  7. Electric motor for laser-mechanical drilling

    Energy Technology Data Exchange (ETDEWEB)

    Grubb, Daryl L.; Faircloth, Brian O.; Zediker, Mark S.

    2017-10-10

    A high power laser drilling system utilizing an electric motor laser bottom hole assembly. A high power laser beam travels within the electric motor for performing a laser operation. A system includes a down hole electrical motor having a hollow rotor for conveying a high power laser beam having a wavelength less than 1060 nm through the electrical motor.

  8. Electric motor for laser-mechanical drilling

    Energy Technology Data Exchange (ETDEWEB)

    Grubb, Daryl L.; Faircloth, Brian O.; Zediker, Mark S.

    2015-07-07

    A high power laser drilling system utilizing an electric motor laser bottom hole assembly. A high power laser beam travels within the electric motor for advancing a borehole. High power laser drilling system includes a down hole electrical motor having a hollow rotor for conveying a high power laser beam through the electrical motor.

  9. Financial Incentives to Promote Active Travel

    Science.gov (United States)

    Martin, Adam; Suhrcke, Marc; Ogilvie, David

    2012-01-01

    Context Financial incentives, including taxes and subsidies, can be used to encourage behavior change. They are common in transport policy for tackling externalities associated with use of motor vehicles, and in public health for influencing alcohol consumption and smoking behaviors. Financial incentives also offer policymakers a compromise between “nudging,” which may be insufficient for changing habitual behavior, and regulations that restrict individual choice. Evidence acquisition The literature review identified studies published between January 1997 and January 2012 of financial incentives relating to any mode of travel in which the impact on active travel, physical activity, or obesity levels was reported. It encompassed macroenvironmental schemes, such as gasoline taxes, and microenvironmental schemes, such as employer-subsidized bicycles. Five relevant reviews and 20 primary studies (of which nine were not included in the reviews) were identified. Evidence synthesis The results show that more-robust evidence is required if policymakers are to maximize the health impact of fiscal policy relating to transport schemes of this kind. Conclusions Drawing on a literature review and insights from the SLOTH (sleep, leisure, occupation, transportation, and home-based activities) time-budget model, this paper argues that financial incentives may have a larger role in promoting walking and cycling than is acknowledged generally. PMID:23159264

  10. Public health benefits of strategies to reduce greenhouse-gas emissions: urban land transport.

    Science.gov (United States)

    Woodcock, James; Edwards, Phil; Tonne, Cathryn; Armstrong, Ben G; Ashiru, Olu; Banister, David; Beevers, Sean; Chalabi, Zaid; Chowdhury, Zohir; Cohen, Aaron; Franco, Oscar H; Haines, Andy; Hickman, Robin; Lindsay, Graeme; Mittal, Ishaan; Mohan, Dinesh; Tiwari, Geetam; Woodward, Alistair; Roberts, Ian

    2009-12-05

    We used Comparative Risk Assessment methods to estimate the health effects of alternative urban land transport scenarios for two settings-London, UK, and Delhi, India. For each setting, we compared a business-as-usual 2030 projection (without policies for reduction of greenhouse gases) with alternative scenarios-lower-carbon-emission motor vehicles, increased active travel, and a combination of the two. We developed separate models that linked transport scenarios with physical activity, air pollution, and risk of road traffic injury. In both cities, we noted that reduction in carbon dioxide emissions through an increase in active travel and less use of motor vehicles had larger health benefits per million population (7332 disability-adjusted life-years [DALYs] in London, and 12 516 in Delhi in 1 year) than from the increased use of lower-emission motor vehicles (160 DALYs in London, and 1696 in Delhi). However, combination of active travel and lower-emission motor vehicles would give the largest benefits (7439 DALYs in London, 12 995 in Delhi), notably from a reduction in the number of years of life lost from ischaemic heart disease (10-19% in London, 11-25% in Delhi). Although uncertainties remain, climate change mitigation in transport should benefit public health substantially. Policies to increase the acceptability, appeal, and safety of active urban travel, and discourage travel in private motor vehicles would provide larger health benefits than would policies that focus solely on lower-emission motor vehicles.

  11. When CERN travels abroad

    CERN Multimedia

    CERN Bulletin

    2010-01-01

    For the first time the new CERN travelling exhibition has gone abroad. The venue is Torino, in Italy, where it is being shown at the Museum of Natural Science in the framework of the activities of the EuroScience Open Forum (ESOF 2010). Soon after the event, the exhibition will fly to Copenhagen. The CERN traveling exhibition was inaugurated in 2009. The new ‘Accelerating Science’ exhibition was inaugurated in 2009 as part of the celebrations to mark the 450th anniversary of the University of Geneva. “CERN’s travelling exhibition is an important tool for outreach in our Member states as it carries the main messages that constitute the backbone of the Laboratory’s education and communication policy”, explains Rolf Landua, head of the Education Group, which manages the exhibition. “The 2010 European Science Open Forum in Torino will gather a lot of experts and visitors from the general public who will be able to experience in an ...

  12. 77 FR 67366 - Federal Acquisition Regulation; Information Collection; Travel Costs

    Science.gov (United States)

    2012-11-09

    ... Regulation; Information Collection; Travel Costs AGENCY: Department of Defense (DOD), General Services... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF DEFENSE... collection requirement concerning Travel Costs. Public comments are particularly invited on: Whether...

  13. Travelers' Health: Water Disinfection for Travelers

    Science.gov (United States)

    ... Chapter 2 - Food Poisoning from Marine Toxins Water Disinfection for Travelers Howard D. Backer RISK FOR TRAVELERS ... of iodine and chlorine (see Halogens below). Chemical Disinfection HALOGENS The most common chemical water disinfectants are ...

  14. Travel/Travelers and Parasitic Diseases

    Science.gov (United States)

    ... care providers. Health departments, the travel industry, multinational corporations, missionary and volunteer organizations, and travelers can also ... PPT, MPEG) on this site? Adobe PDF file Microsoft PowerPoint file Microsoft Word file Microsoft Excel file ...

  15. Travel Time Variability and Airport Accessibility

    OpenAIRE

    Koster, P.R.; Kroes, E.P.; Verhoef, E.T.

    2010-01-01

    This discussion paper resulted in a publication in Transportation Research Part B: Methodological (2011). Vol. 45(10), pages 1545-1559. This paper analyses the cost of access travel time variability for air travelers. Reliable access to airports is important since it is likely that the cost of missing a flight is high. First, the determinants of the preferred arrival times at airports are analyzed, including trip purpose, type of airport, flight characteristics, travel experience, type of che...

  16. Travelers' Health: HIV Infection

    Science.gov (United States)

    ... Last-Minute Travel Long-Term Travel Mass Gatherings Medical Tourism Mental Health Motion Sickness Natural Disasters Pregnant Travelers ... for purposes of medical treatment (see Chapter 2, Medical Tourism ), the blood and blood products used in the ...

  17. Travelers' Health: Mumps

    Science.gov (United States)

    ... submit Start of Search Controls Search Form Controls Travelers' Health Note: Javascript is disabled or is not ... FAQ Stamaril clinics Disease Directory Resources Resources for Travelers Adventure Travel Animal Safety Blood Clots Bug Bites ...

  18. Travelers' Health: Motion Sickness

    Science.gov (United States)

    ... Disease Directory Resources Resources for Travelers Adventure Travel Animal Safety Blood Clots Bug Bites Business Travel Cold ... motion sickness. Adding distractions—controlling breathing, listening to music, or using aromatherapy scents such as mint or ...

  19. 基于SP调查的城市公共交通出行时间价值估计%Estimation of Travel Time Values for Urban Public Transport Passengers Based on SP Survey

    Institute of Scientific and Technical Information of China (English)

    陈旭梅; 刘巧仙; 杜光

    2011-01-01

    Quantitative study on the travel costs of urban transit passengers has great significance for scientifically evaluating social benefits of public transportation system. Analysis of travel time values is one of the most important parts of traveler' s travel cost estimation. According to the stated preference (SP) survey data for Beijing residents, factors that influence public transport values of travel time are analyzed and a Logit-based model is used. An improved SP survey based model is proposed, in which traveler's income is introduced as a variable. The parameters estimating the travel time values under the trip purposes of work/ business and leisure are calibrated. Then the values of travel time under different conditions in Beijing are obtained (I. E. Different trip purposes and with/without transferring). The results indicate that the travel time values for work are generally higher than those for leisure. The waiting time values are higher than transferring time values and in-vehicle time values under any circumstances, and the waiting time values are higher with transferring than those without transferring.%城市公共交通乘客出行成本的量化研究,对于科学合理地评价公共交通系统的社会效益意义重大,而出行时间价值是进行乘客出行成本估计的一个重要环节.本文以北京市市区居民SP调查数据为依托,通过分析公共交通出行时间价值的影响因素,选取Logit模型为基础模型,引入“出行者收入”作为模型新增变量,并针对工作商务、社会娱乐两种出行目的在不同换乘情况下出行时间价值模型进行参数标定,建立了基于SP调查数据的改进型时间价值求解模型,并计算得到北京市公共交通出行者在不同出行目的和有无换乘情况下的换乘时间价值、候车时间价值以及运行时间价值.研究发现,工作商务出行目的出行时间价值普遍高于社会娱乐的出行时间价值,出行者在不同出

  20. The Connected Traveler

    Energy Technology Data Exchange (ETDEWEB)

    Young, Stanley

    2017-04-24

    The Connected Traveler project is a multi-disciplinary undertaking that seeks to validate potential for transformative transportation system energy savings by incentivizing energy efficient travel behavior.

  1. Travel time and travel cost in European air travel

    OpenAIRE

    Dusek, Tamas

    2012-01-01

    The aim of the study is to examine two issues of consumer air travel accessibility in Europe, namely flight time and ticket costs. The first part of the paper discusses the various methodological problems of creating time matrix and cost matrix of air travel. Because of problems of conceptualizing of the air travel network and the modifiable areal unit problem the analysis is conducted on several spatial levels. The smallest network consists of 15 busiest airports and the largest network has ...

  2. 上海市闵行区公共自行车出行特征研究%Research on the Travel Characteristics of Public Bicycle in Minhang District, Shanghai

    Institute of Scientific and Technical Information of China (English)

    朱玮; 庞宇琦; 王德; 余雄伟

    2012-01-01

      以上海闵行区公共自行车系统为例,考察该系统自实施以来对闵行区居民出行产生的影响,以期为闵行以及我国的公共自行车事业发展提供借鉴。研究以使用者的刷卡数据样本以及实地问卷调查获得的样本为数据基础,首先总结不同区域、不同用地类型的公共自行车网点的运行特征。接着以居民为对象,总结使用公共自行车的出行目的、频率变化、网点使用时空分布、出行方式转换、使用公共自行车的原因以及使用模式。最后分析在虚拟收费和费用返还的情景下,人们使用公共自行车的意愿变化。%  The paper takes the public bicycle system (PBS) in Minhang District, Shanghai, as the case and studies the impact brought by the system on the travel behavior of residents in Minhang, in hope that it may contribute to the development of PBS in China. The study uses a sample of PB users’ IC card records and data col ected from a questionnaire survey as the base, and firstly summarizes the PB stations’ operational characteristics in different areas and land use types. Secondly, the paper studies residents’ travel behavior related to PB, including travel purpose, travel frequency, spatio-temporal distributions of using the stations, travel mode shift, reasons of using and not using PB and mode of PB travel. Final y, people’s wil ingness to use PB is analyzed under the virtual scenarios of charging and reimbursing for using PB.

  3. 41 CFR 301-53.3 - How may I use promotional materials and frequent traveler benefits?

    Science.gov (United States)

    2010-07-01

    ... promotional materials and frequent traveler benefits? 301-53.3 Section 301-53.3 Public Contracts and Property... TRAVELER PROGRAMS § 301-53.3 How may I use promotional materials and frequent traveler benefits? Promotional materials and frequent traveler benefits may be used as follows: (a) You may use frequent traveler...

  4. 41 CFR 301-10.7 - How should I route my travel?

    Science.gov (United States)

    2010-07-01

    ... General § 301-10.7 How should I route my travel? You must travel to your destination by the usually traveled route unless your agency authorizes or approves a different route as officially necessary. ... travel? 301-10.7 Section 301-10.7 Public Contracts and Property Management Federal Travel...

  5. Evaluation of oral-motor movements and facial mimic in patients with head and neck burns by a public service in Brazil

    Directory of Open Access Journals (Sweden)

    Dicarla Motta Magnani

    2015-05-01

    Full Text Available OBJECTIVES: The purpose of this study was to analyze the characteristics of oral-motor movements and facial mimic in patients with head and neck burns. METHODS: An observational descriptive cross-sectional study was conducted with patients who suffered burns to the head and neck and who were referred to the Division of Orofacial Myology of a public hospital for assessment and rehabilitation. Only patients presenting deep partial-thickness and full-thickness burns to areas of the face and neck were included in the study. Patients underwent clinical assessment that involved an oral-motor evaluation, mandibular range of movement assessment, and facial mimic assessment. Patients were divided into two groups: G1 - patients with deep partial-thickness burns; G2 - patients with full-thickness burns. RESULTS: Our final study sample comprised 40 patients: G1 with 19 individuals and G2 with 21 individuals. The overall scores obtained in the clinical assessment of oral-motor organs indicated that patients with both second- and third-degree burns presented deficits related to posture, position and mobility of the oral-motor organs. Considering facial mimic, groups significantly differed when performing voluntary facial movements. Patients also presented limited maximal incisor opening. Deficits were greater for individuals in G2 in all assessments. CONCLUSION: Patients with head and neck burns present significant deficits related to posture, position and mobility of the oral myofunctional structures, including facial movements.

  6. Childhood and Travel Literature.

    Science.gov (United States)

    Espey, David

    If children are not present in most travel literature--precisely because the genre has most typically been the domain of solitary male travelers who are escaping domestic obligation, routine, the familiar, and the family--they nevertheless are an integral part of the genre. The traveler is in many ways a child, an innocent abroad. Traveler writers…

  7. Travel-related illness.

    Science.gov (United States)

    Ziegler, Carol C

    2013-06-01

    Travel abroad for business and pleasure should be safe and meaningful for the traveler. To assure that safe experience, certain processes should be considered before travel. A thorough pretravel health assessment will offer patients and health care providers valuable information for anticipatory guidance before travel. The destination-based risk assessment will help determine the risks involved in travel to specific locations and guide in the development of contingency plans for all travelers, especially those with chronic conditions. Diseases are more prevalent overseas, and immunizations and vaccinations are all important considerations for persons traveling abroad.

  8. The Use of Counter-Attack in Apologetic Public Relations Crises: The Case of General Motors vs. Dateline NBC.

    Science.gov (United States)

    Hearit, Keith Michael

    1996-01-01

    Analyzes an apologetic exchange between General Motors (GM) and NBC in 1992-93 over the safety of GM's C/K trucks. Concludes that NBC and GM used "kategoria-based apologiae," a heavy-handed strategy, in their interchange, but that, when used correctly, the strategy can be an important resource in challenging inaccurate and/or misleading…

  9. Evaluation of oral-motor movements and speech in patients with tetanus of a public service in Brazil.

    Science.gov (United States)

    Mangilli, L D; Sassi, F C; Jacomo, A; de Andrade, C R F

    2011-08-01

    The characterisation of oral-motor movements and speech of patients with tetanus were investigated to determine the existence of possible signs that are characteristic of this pathology. Thirteen patients clinically diagnosed with tetanus (10 with severe tetanus and three with very severe tetanus) and admitted to an intensive care unit underwent clinical evaluation of oral-motor movements and speech. Statistical analysis indicated significant between-group differences for speech motor functions, suggesting that individuals with very severe tetanus present rigidity as a characteristic interfering in articulatory precision (P = 0·035) and movement rate (P = 0·038). For lip closure, tongue movement, palatal elevation, gag reflex and voice quality, no between-group differences were identified for the specific abnormal characteristics. The observed abnormal results indicate that muscle strength and functional status of the oral-motor system presented by most of the participants of the study did not ensure the necessary integrity for satisfactory performance. The characterisation of the oral myofunctional aspects of patients with tetanus provides medical teams, patients and families with a wider and better description of the clinical situation, giving support to the diagnosis, prognostics and treatment. © 2010 Blackwell Publishing Ltd.

  10. Rabies in travelers.

    Science.gov (United States)

    Gautret, Philippe; Parola, Philippe

    2014-03-01

    Most cases of rabies in travelers are associated with dog bites and occur in adults who are commonly migrants. The incidence of injuries to travelers caused by potentially rabid animals is approximately 0.4 % per month of stay. Dogs account for 51 % of cases, but nonhuman primates are the leading animals responsible for injuries in travelers returning from Southeast Asia. Travel to Southeast Asia, India and North Africa, young age, and traveling for tourism are risk factors for potential exposure. More than 70 % of travelers are not immunized prior to departing and do not receive adequate care when injured. The intradermal vaccination route has been proven economical, safe and immunogenic in travelers. The immunity provided by the three-dose series is long-lasting and should be considered an investment for future travel. Abbreviated schedules may be used for last-minute travelers.

  11. The Travelling Telescope

    Science.gov (United States)

    Murabona Oduori, Susan

    2015-08-01

    The telescope has been around for more than 400 years, and through good use of it scientists have made many astonishing discoveries and begun to understand our place in the universe. Most people, however, have never looked through one. Yet it is a great tool for cool science and observation especially in a continent and country with beautifully dark skies. The Travelling Telescope project aims to invite people outside under the stars to learn about those curious lights in the sky.The Travelling Telescope aims to promote science learning to a wide range of Kenyan schools in various locations exchanging knowledge about the sky through direct observations of celestial bodies using state of the art telescopes. In addition to direct observing we also teach science using various hands-on activities and astronomy software, ideal for explaining concepts which are hard to understand, and for a better grasp of the sights visible through the telescope. We are dedicated to promoting science using astronomy especially in schools, targeting children from as young as 3 years to the youth, teachers, their parents and members of the public. Our presentation focuses on the OAD funded project in rural coastal Kenya.

  12. 41 CFR 102-34.85 - What motor vehicles require motor vehicle identification?

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 3 2010-07-01 2010-07-01 false What motor vehicles require motor vehicle identification? 102-34.85 Section 102-34.85 Public Contracts and Property Management... 34-MOTOR VEHICLE MANAGEMENT Identifying and Registering Motor Vehicles Motor Vehicle...

  13. Travel Inside the Ear

    Science.gov (United States)

    ... Home » Health Info » Hearing, Ear Infections, and Deafness Travel Inside the Ear Video When sound waves reach ... are smaller than an orange seed. It then travels into the inner ear, which is filled with ...

  14. Traveling Safely with Medicines

    Science.gov (United States)

    ... Medications Safely My Medicine List How to Administer Traveling Safely with Medicines Planes, trains, cars – even boats ... your trip, ask your pharmacist about how to travel safely with your medicines. Make sure that you ...

  15. Travelers' Health: Yellow Fever

    Science.gov (United States)

    ... Drugs Cruise Ship Travel Families with Children Fish Poisoning in Travelers Food and Water Getting Health Care ... removal of their thymus or have had indirect radiation therapy in the distant past, these people can ...

  16. End to End Travel

    Data.gov (United States)

    US Agency for International Development — E2 Solutions is a web based end-to-end travel management tool that includes paperless travel authorization and voucher document submissions, document approval...

  17. Modelling urban travel times

    NARCIS (Netherlands)

    Zheng, F.

    2011-01-01

    Urban travel times are intrinsically uncertain due to a lot of stochastic characteristics of traffic, especially at signalized intersections. A single travel time does not have much meaning and is not informative to drivers or traffic managers. The range of travel times is large such that certain tr

  18. Modelling urban travel times

    NARCIS (Netherlands)

    Zheng, F.

    2011-01-01

    Urban travel times are intrinsically uncertain due to a lot of stochastic characteristics of traffic, especially at signalized intersections. A single travel time does not have much meaning and is not informative to drivers or traffic managers. The range of travel times is large such that certain

  19. Traveling and Asthma

    Science.gov (United States)

    ... Emergency Room? What Happens in the Operating Room? Traveling and Asthma KidsHealth > For Kids > Traveling and Asthma A A A What's in this ... t have to get in the way of travel fun. Let's find out how to be prepared ...

  20. Travel epidemiology. WHO perspective.

    Science.gov (United States)

    Gezairy, Hussein A

    2002-12-01

    International travel is undertaken by large, and ever increasing numbers of people for professional, social, recreational and humanitarian purposes, and this upward trend looks set to continue. Travelers are exposed to a variety of health risks of the unfamiliar environment of the visited area. The risk of exposure is determined by destination, duration of the visit, purpose of the visit, behavior of the traveler and underlying physical and biological status of the traveler. However, most risks can be minimized by suitable precautions taken before, during and after travel. Travelers can themselves, also, easily introduce any infectious agents they may harbor to the visited area. Many infectious diseases have been introduced in many parts of the world through travel and trade. Travel has been identified as a prime factor in the global spread of infectious diseases. In a world of rapid air travel, no country is safe from infectious diseases. An outbreak in one country can easily and rapidly be transmitted across long distances to affect other countries through travel and trade. The World Health Organization devotes great attention to prevention and control of global spread of infectious diseases and minimizing the negative effect of international travel on health. The main strategies of the World Health Organization for minimizing the negative effects of expanding travel on global health security include developing the necessary strategies, rules and regulations; strengthening global communicable diseases surveillance and response; dissemination of related information throughout the world and strengthening national capacity for communicable diseases surveillance and response.

  1. Modelling urban travel times

    NARCIS (Netherlands)

    Zheng, F.

    2011-01-01

    Urban travel times are intrinsically uncertain due to a lot of stochastic characteristics of traffic, especially at signalized intersections. A single travel time does not have much meaning and is not informative to drivers or traffic managers. The range of travel times is large such that certain tr

  2. Health precautions for travelers to Mexico.

    Science.gov (United States)

    Peate, W F; Pust, R E

    1985-03-01

    After Canada, Mexico is the most popular destination for Americans traveling outside the United States. As a developing country, Mexico presents numerous health hazards to American visitors, including the prevalent travelers' diarrhea (turista), from which 40% will suffer, and the less common typhoid, dengue, rabies, malaria, taeniasis, cysticercosis, and trichinosis. Environmental hazards, including sun, heat, high altitude, motion sickness, and accidents, also threaten the unwary traveler. In the event of illness or injury, Americans may find medical facilities unfamiliar and less well equipped than those in the United States. Utilizing both an individualized risk assessment for each traveler and readily available references, physicians, in partnership with local public health agencies, can develop comprehensive preventive health plans for their patients traveling to Mexico.

  3. Limitations of typhoid vaccination for travellers.

    Science.gov (United States)

    Stephen, J; Mara, N; Nathwani, D

    1996-12-01

    Around one-third of travellers to endemic areas receive pre-travel typhoid vaccination, increasingly with the new parenteral vaccination Typhim Vi (Mérieux). More than 200 cases of Salmonella typhi and S. paratyphi infection are imported into the UK each year. Despite the widespread use of immunisation, non-specialist clinicians and the travelling public do not appear to fully appreciate the limitations of currently available vaccination. These limitations are not adequately highlighted in either the Green Book of Immunisation against Infectious Diseases (HMSO, 1992) or the new handbook Health Information for Overseas Travel (HMSO, 1995) which are important sources of reference for clinicians and practice nurses. This may delay consideration of diagnosis and presentation for treatment in immunised travellers.

  4. Travelers' Health: Water Disinfection for Travelers

    Science.gov (United States)

    ... Water Disinfection Infographics for Travelers MERS Health Advisory poster Food and Water: What's Safer Health Advisory: MERS ... prevent recontamination during storage Table 2-10. Microorganism size and susceptibility to filtration ORGANISM AVERAGE SIZE (µm) ...

  5. 72 FR 21045 - Notice of Emergency Temporary Closure of Certain Public Lands, to Motorized Vehicles, in Owyhee...

    Science.gov (United States)

    2007-04-27

    ... Vehicles, in Owyhee County ID, Under Sailor Cap Emergency and Rehabilitation Plan AGENCY: Bureau of Land... and extend, modify, or rescind the order at that time. This order affects public lands in...

  6. Enslaved Constitution: Obstructing the Freedom to Travel

    Directory of Open Access Journals (Sweden)

    Mitchell F. Crusto

    2008-04-01

    Full Text Available Does the Constitution protect a citizen’s intra-state travel (within a state from unjustified state prohibition? To date, the Supreme Court has not ruled directly on the issue, and many federal courts believe that the right to intrastate travel is not constitutionally protected. This Article explores the constitutional right of intra-state travel that is free from wrongful state infringement along public roadways by law-abiding citizens. Using critical legal history, this Article poses that federal courts’ denial of the right to intrastate travel consciously or unconsciously reflects the antebellum, Southern legal doctrine of people as property, which regulated the travel of enslaved African descendants.The constitutionality of intra-state travel arose most recently during the Hurricane Katrina Crisis when the City of Greta, Louisiana police barricaded a federal highway, denying would-be evacuees the ability to flee from the flooding City of New Orleans. In an ensuing action for infringement of the would-be evacuees’ constitutional right to intra-state travel, Federal District Judge Mary Ann Vial Lemmon dismissed the matter in Dickerson v. City of Gretna, holding that “[w]hile there is no doubt that a fundamental right of interstate travel exists, the Supreme Court has not ruled on whether a right of intra[-]state travel exists. This Court declines to find that there is a fundamental right to intra[-]state travel.” The Fifth Circuit affirmed the ruling.This Article recommends that when federal courts assess whether there is a constitutional right to intra-state travel, they should embrace the American paradigm of liberty and abandon the antebellum, Southern paradigm of enslavement. Consistent with Professor Derrick Bell’s “interestconvergence” principle, all Americans benefit when the Constitution protects the human rights of the least powerful American.

  7. Twitter for travel medicine providers.

    Science.gov (United States)

    Mills, Deborah J; Kohl, Sarah E

    2016-03-01

    Travel medicine practitioners, perhaps more so than medical practitioners working in other areas of medicine, require a constant flow of information to stay up-to-date, and provide best practice information and care to their patients. Many travel medicine providers are unaware of the popularity and potential of the Twitter platform. Twitter use among our travellers, as well as by physicians and health providers, is growing exponentially. There is a rapidly expanding body of published literature on this information tool. This review provides a brief overview of the ways Twitter is being used by health practitioners, the advantages that are peculiar to Twitter as a platform of social media, and how the interested practitioner can get started. Some key points about the dark side of Twitter are highlighted, as well as the potential benefits of using Twitter as a way to disseminate accurate medical information to the public. This article will help readers develop an increased understanding of Twitter as a tool for extracting useful facts and insights from the ever increasing volume of health information. © International Society of Travel Medicine, 2016. All rights reserved. Published by Oxford University Press. For permissions, please e-mail: journals.permissions@oup.com.

  8. International travel and the elite athlete.

    Science.gov (United States)

    Pipe, Andrew L

    2011-01-01

    International travel is a frequent occurrence in the life of the elite athlete; such travel can pose challenges to the sport medicine practitioner. Travel is also the reality of many recreational level or sub-elite athletes as opportunities for international competition and training proliferate. An appreciation of the range of responsibilities associated with the preparation for and the strategies to facilitate such travel is essential for any physician charged with the care of athletes and teams. An appreciation of (1) the medical and public health challenges associated with competition in a particular setting; (2) the requirements for vaccination and immunization; (3) the strategies for the management of jet lag and climatic or environmental extremes; (4) the range of supplies and equipment necessary for travel to certain locales; (5) the need to ensure the availability of ample familiar and nutritious foods; (6) the potential need for specialty care in strange settings; (7) the management of common travel-associated illness; and (8) the challenges associated with the evacuation of an injured athlete are fundamental to the successful management of international travel involving athletes and teams. The adoption of a methodical approach to pre-trip planning can ensure an enhanced travel experience, illness-free training and competition, and facilitate optimal performance.

  9. 41 CFR 301-71.1 - What is the purpose of an agency travel accounting system?

    Science.gov (United States)

    2010-07-01

    ... an agency travel accounting system? 301-71.1 Section 301-71.1 Public Contracts and Property Management Federal Travel Regulation System TEMPORARY DUTY (TDY) TRAVEL ALLOWANCES AGENCY RESPONSIBILITIES 71... accounting system? To: (a) Pay authorized and allowable travel expenses of employees; (b) Provide...

  10. 41 CFR 301-71.100 - What is the purpose of the travel authorization process?

    Science.gov (United States)

    2010-07-01

    ... the travel authorization process? 301-71.100 Section 301-71.100 Public Contracts and Property...-AGENCY TRAVEL ACCOUNTABILITY REQUIREMENTS Travel Authorization § 301-71.100 What is the purpose of the travel authorization process? The purpose is to: (a) Provide the employee information regarding...

  11. The Image of travelling

    DEFF Research Database (Denmark)

    Grand, Karina Lykke

    2017-01-01

    and experienced and how he interpreted this knowledge, visually and in words. Rørbye is my primary research focus, but his artistic struggles are very similar to other artists travelling in Italy at the time. I therefore use Martinus Rørbye’s Italian sojourn as a prism of interpretation.......The Danish painter Martinus Rørbye was among of the Danish artists to reinvent the traditions of the genre of travel painting in the 1830s. His changes and developments of a new complex pictorial strategy were in many ways an answer to the changes in society, especially the advent of tourism....... The new travel image had its focus on concurrency, everyday life and the secular world, resulting in images that anticipated the photographic travel image, the snapshot and the travel postcard. The advent of this new strategy proved to have a very long after-life, as tourists and travellers of today still...

  12. Histoplasmosis in Israeli travelers.

    Science.gov (United States)

    Segel, Michael J; Rozenman, Judith; Lindsley, Mark D; Lachish, Tamar; Berkman, Neville; Neuberger, Ami; Schwartz, Eli

    2015-06-01

    Histoplasmosis is a common endemic human mycoses acquired mostly in the Americas. We reviewed 23 cases of histoplasmosis in Israeli travelers; 22 had traveled to Central or South America and one to North America. Fourteen cases had been exposed to bat habitats and were symptomatic, presenting ≤ 3 months after their return. Asymptomatic patients (N = 9) were diagnosed during the evaluation of incidental radiological findings or because a travel partner had been suspected of Histoplasma infection, 16-120 months after their return. Serological testing was positive in 75% of symptomatic cases but only 22% of asymptomatic cases. Histoplasmosis should be considered in travelers returning from the Americas with respiratory or febrile illness within weeks of return, particularly if exposed to bat habitats. Travel history is essential in patients presenting with pulmonary nodules, even years after travel to endemic countries.

  13. TRAVEL AND HOME LEAVE

    CERN Multimedia

    Human Resources Division

    2002-01-01

    Administrative procedures for : Travel to the home station and home leave (hl) Additional travel to the home station (at) Travel to the home station and home leave for family reasons (hlf) As part of the process of simplifying administrative procedures, HR and AS Divisions have devised a new, virtually automatic procedure for payment of travel expenses to the home station. The changes are aimed at rationalising administrative procedures and not at reducing benefits. The conditions of eligibility are unchanged. The new procedure, which will be operational with effect from 1st June 2002, will greatly simplify the administrative processing of claims for travel expenses and the recording of home leaves. Currently, requests for payment are introduced manually into the Advances and Claims system (AVCL) by divisional secretariats. All travel to the home station starting prior to 1st June 2002 will be processed according to the existing system whereas that starting on 1st June and after will be processed accordi...

  14. 73 FR 2063 - Notice of Emergency Closure of Certain Public Lands to Motorized Vehicles in Twin Falls and...

    Science.gov (United States)

    2008-01-11

    ... Twin Falls and Owyhee Counties, ID and Elko County, NV, Under Murphy Complex Emergency Stabilization...., access limited to existing roads and trails).'' This order affects public lands in Owyhee and Twin Falls..., NV--18,631 Owyhee County, ID--435,968 Twin Falls County, ID--55,878 A total of approximately...

  15. FORMS OF YOUTH TRAVEL

    OpenAIRE

    Moisã Claudia Olimpia

    2011-01-01

    Taking into account the suite of motivation that youth has when practicing tourism, it can be said that the youth travel takes highly diverse forms. These forms are educational tourism, volunteer programs and “work and travel”, cultural exchanges or sports tourism and adventure travel. In this article, we identified and analyzed in detail the main forms of youth travel both internationally and in Romania. We also illustrated for each form of tourism the specific tourism products targeting you...

  16. Update on travelers' health.

    Science.gov (United States)

    Weber, Carol J

    2005-10-01

    As an international traveler, contact your health care provider at least 4 to 6 weeks before departure to obtain needed vaccinations and prophylactic medications. Be aware of the occurrence of any disease outbreaks in the countries you are visiting. While traveling, don't forget that one of the most important practices in preventing illness from infections is handwashing. Wash your hands carefully and frequently with soap and water, and if soap and water are not available use an alcohol-based hand rub. Be a responsible traveler by becoming informed about health risks and what to do to avoid them before you travel.

  17. Multimodal Network Equilibrium with Stochastic Travel Times

    Directory of Open Access Journals (Sweden)

    M. Meng

    2014-01-01

    Full Text Available The private car, unlike public traffic modes (e.g., subway, trolley running along dedicated track-ways, is invariably subject to various uncertainties resulting in travel time variation. A multimodal network equilibrium model is formulated that explicitly considers stochastic link capacity variability in the road network. The travel time of combined-mode trips is accumulated based on the concept of the mean excess travel time (METT which is a summation of estimated buffer time and tardy time. The problem is characterized by an equivalent VI (variational inequality formulation where the mode choice is expressed in a hierarchical logit structure. Specifically, the supernetwork theory and expansion technique are used herein to represent the multimodal transportation network, which completely represents the combined-mode trips as constituting multiple modes within a trip. The method of successive weighted average is adopted for problem solutions. The model and solution method are further applied to study the trip distribution and METT variations caused by the different levels of the road conditions. Results of numerical examples show that travelers prefer to choose the combined travel mode as road capacity decreases. Travelers with different attitudes towards risk are shown to exhibit significant differences when making travel choice decisions.

  18. Information for travellers' physicians.

    Science.gov (United States)

    Allison, D J; Blinco, K

    1990-07-01

    Physicians can obtain advice about international travel for their patients from many different sources of information. The authors review some of the most common sources based on their experience at the International Travellers' Clinic operated by the New Brunswick Department of Health and Community Services in Fredericton. They identify readily available handbooks and periodicals and compare two computer software programs.

  19. Information for Travellers' Physicians

    OpenAIRE

    Allison, David J; Blinco, Kimberley

    1990-01-01

    Physicians can obtain advice about international travel for their patients from many different sources of information. The authors review some of the most common sources based on their experience at the International Travellers' Clinic operated by the New Brunswick Department of Health and Community Services in Fredericton. They identify readily available handbooks and periodicals and compare two computer software programs.

  20. CARLSON WAGONLIT TRAVEL

    CERN Multimedia

    2006-01-01

    CARLSON WAGONLIT TRAVEL informs you that our agency will be closed from 22 December 2006 at 16:30 until 8 January 2007 at 8:30. For all URGENT MATTERS you can contact our CARLSON WAGONLIT TRAVEL branch at W.H.O. (Mr Pierre Plumettaz), phone: 022 791 55 95. We wish you already a Merry Christmas and a Happy New Year!

  1. Traveling and Asthma

    Science.gov (United States)

    ... What Happens in the Operating Room? Traveling and Asthma KidsHealth > For Kids > Traveling and Asthma A A A What's in this article? Pack ... Or how about sleepover camp? If you have asthma , you'll be packing more than your clothes ...

  2. The traveling transect

    DEFF Research Database (Denmark)

    Braae, Ellen Marie; Diedrich, Lisa; Lee, Gini

    2013-01-01

    conditions, correspond to the fields of natural sciences and to spatial aesthetics. The Travelling Transect method, inspired by Alexander von Humboldt’s method of transareal travelling and transversal collecting of ephemeral information from site, informs our exploratory fieldwork in the water landscapes...

  3. Traveler response to information

    NARCIS (Netherlands)

    Chorus, C.G.

    2007-01-01

    The past few years have witnessed an impressive progress in the capabilities of travel information services. It is expected that in a few years, travelers will be constantly informed, pre-trip as well as en-route, about their optimal departure time, route and transport mode. The information is based

  4. Travel and transport

    DEFF Research Database (Denmark)

    Bill, Jan; Roesdahl, Else

    2007-01-01

    On the interrelationship between travel, transport and society; on land transport, sea and river transport, and on winter transport;  on the related technologies and their developments......On the interrelationship between travel, transport and society; on land transport, sea and river transport, and on winter transport;  on the related technologies and their developments...

  5. Traveling with children

    Science.gov (United States)

    ... let them inspect it. Small jars of baby food travel well. They make little waste and you can dispose of them easily. Air ... not eat raw fruits or vegetables. Eat only food that is hot and has been cooked ... and hotels for guidance and assistance. For foreign travel, check ...

  6. Dengue Sentinel Traveler Surveillance: Monthly and Yearly Notification Trends among Japanese Travelers, 2006-2014.

    Directory of Open Access Journals (Sweden)

    Munehisa Fukusumi

    2016-08-01

    Full Text Available Dengue is becoming an increasing threat to non-endemic countries. In Japan, the reported number of imported cases has been rising, and the first domestic dengue outbreak in nearly 70 years was confirmed in 2014, highlighting the need for greater situational awareness and better-informed risk assessment.Using national disease surveillance data and publically available traveler statistics, we compared monthly and yearly trends in the destination country-specific dengue notification rate per 100,000 Japanese travelers with those of domestic dengue cases in the respective country visited during 2006-2014. Comparisons were made for countries accounting for the majority of importations; yearly comparisons were restricted to countries where respective national surveillance data were publicly available.There were 1007 imported Japanese dengue cases (Bali, Indonesia (n = 202, the Philippines (n = 230, Thailand (n = 160, and India (n = 152. Consistent with historic local dengue seasonality, monthly notification rate among travelers peaked in August in Thailand, September in the Philippines, and in Bali during April with a smaller peak in August. While the number of travelers to Bali was greatest in August, the notification rate was highest in April. Annually, trends in the notification rate among travelers to the Philippines and Thailand also closely reflected local notification trends.Travelers to dengue-endemic countries appear to serve as reliable "sentinels", with the trends in estimated risk of dengue infection among Japanese travelers closely reflecting local dengue trends, both seasonally and annually. Sentinel traveler surveillance can contribute to evidence-based pretravel advice, and help inform risk assessments and decision-making for importation and potentially for subsequent secondary transmission. As our approach takes advantage of traveler data that are readily available as a proxy denominator, sentinel traveler surveillance can be a

  7. Growth of motorized mobility and strategies for road safety. Paper to be published in Transport Miesjki (Public Transport), 1993, No. 9 (Polish).

    NARCIS (Netherlands)

    Koornstra, M.J.

    2012-01-01

    Free market economies have shown the dominating utility of motorized transport, both for passenger and goods transport. One negative side of motorization is the lack of road safety. Although it is shown that air, water and rail transport are much safer, the individual and company utility of motorize

  8. Test Review: Colarusso, R. P., & Hammill, D. D. (2003). "Motor-Free Visual Perception Test."(3rd ed.). Novata, CA: Academic Therapy Publications

    Science.gov (United States)

    McCane, Sara Jean

    2006-01-01

    The Motor-Free Visual Perception Test: Third edition (MVPT-3; Colarusso & Hammill, 2003) purports to measure overall visual perceptual ability. Task responses require no motor ability, eliminating the effect of motor performance on the overall visual perception score. The test authors suggested that this MVPT-3 characteristic allows for its…

  9. 基于电压调节的行波超声波电机转速模糊PID控制%Fuzzy PID Speed Control of Traveling Wave Ultrasonic Motor Using Voltage Amplitude Regulation

    Institute of Scientific and Technical Information of China (English)

    史敬灼; 张慧敏

    2011-01-01

    Accordance with ultrasonic motor's time-variable nonlinearity, a online adaptive correction based on fuzzy logic was presented. The special nature of ultrasonic motor's speed control were fully taken into account in designing fuzzy rules. The amplitude of driving voltage was used as the control parameter to realite the control method. The experiments indicate that the control characteristics are much better than that of PID controller.%针对超声波电机的时变非线性,给出了基于模糊逻辑的PID控制参数在线自适应校正方法.模糊规则设计中充分考虑了超声波电机转速控制的特殊性.采用驱动电压幅值作为控制量,实现了该控制方法.实验表明,控制性能优于PID控制器.

  10. 76 FR 58243 - Proposed Information Collection; Comment Request; Survey of International Air Travelers

    Science.gov (United States)

    2011-09-20

    ..., travel associations, destinations, lodging); Consultants; Financial Firms; Educational Institutions; and... Travelers AGENCY: International Trade Administration, Commerce. ACTION: Notice. SUMMARY: The Department of... public and other Federal agencies to take this opportunity to comment on proposed and/or...

  11. Understanding taxi travel patterns

    Science.gov (United States)

    Cai, Hua; Zhan, Xiaowei; Zhu, Ji; Jia, Xiaoping; Chiu, Anthony S. F.; Xu, Ming

    2016-09-01

    Taxis play important roles in modern urban transportation systems, especially in mega cities. While providing necessary amenities, taxis also significantly contribute to traffic congestion, urban energy consumption, and air pollution. Understanding the travel patterns of taxis is thus important for addressing many urban sustainability challenges. Previous research has primarily focused on examining the statistical properties of passenger trips, which include only taxi trips occupied with passengers. However, unoccupied trips are also important for urban sustainability issues because they represent potential opportunities to improve the efficiency of the transportation system. Therefore, we need to understand the travel patterns of taxis as an integrated system, instead of focusing only on the occupied trips. In this study we examine GPS trajectory data of 11,880 taxis in Beijing, China for a period of three weeks. Our results show that taxi travel patterns share similar traits with travel patterns of individuals but also exhibit differences. Trip displacement distribution of taxi travels is statistically greater than the exponential distribution and smaller than the truncated power-law distribution. The distribution of short trips (less than 30 miles) can be best fitted with power-law while long trips follow exponential decay. We use radius of gyration to characterize individual taxi's travel distance and find that it does not follow a truncated power-law as observed in previous studies. Spatial and temporal regularities exist in taxi travels. However, with increasing spatial coverage, taxi trips can exhibit dual high probability density centers.

  12. [Thromboembolism in travelers].

    Science.gov (United States)

    Bihari, I; Sándor, T

    2001-11-11

    The association between long haul travel and the risk of venous thromboembolism are suspected for long time. Mostly air travel related thrombosis series have been reported in the literature. Risk factors can be classified as: 1. travel related factors (coach position, immobilization, prolonged air travel, narrow seat and room, diuretic effect of alcohol, insufficient fluid intake, dehydration, direct pressure on leg veins, rare inspiration). 2. air plane related risk factors (low humidity, relative hypoxia, stress). 3. patient related factors (hereditary and acquired thrombophylia, previous deep venous thrombosis, age over 40, recent surgery or trauma, gravidity, puerperium, oestrogen containing pills, varicosity, chronic heart disease, obesity, fever, diarrhoea, vomiting, smoking). No patient related factors were found in some cases. To reduce the hazards air travellers are rightly concerned to know the level of the risk and the airlines should be responsible for this information. People should discuss with their physician what prophlylactic measures should be taken, such as compression stockings or low molecular weight heparin. Not only flight but car, bus and train travellers are also at risk of developing venous thromboembolism. Long haul travel alone is a separate risk factor for venous thromboembolism.

  13. Increasing the Road Capacity Not Always Improves the Travel Time: A Before and After Study in Tirana

    Directory of Open Access Journals (Sweden)

    Edison Barhani

    2017-01-01

    Full Text Available The rapid growth of the car ownership last two decades in Albania has increased the need for higher transportation capacity. One of the most affected cities in Albania is Tirana where the capacity has not met the demand. Inevitably, the center of Tirana (Skanderbeg Square plays a crucial part in Tirana Transportation System. After a closure of about 2 years, being under reconstruction planned to be car-free area, Skanderbeg Square opened to traffic in 2011 by motorizing it again. This study analyses performance parameters such as: Travel Time, Waiting Time, and Passenger Movements for bus and passenger cars passing through the Skanderbeg Square before and after it was opened to traffic. Kinostudio-Kombinat bus line has been selected as the only line passing through the center of Tirana. Changing the land use from car-free to motorized one has created a valuable possibility to compare the traditional approach; which focuses only on cost to the sustainable one; which includes the environment and social aspects, too in the evaluation. Wider roads, shorter travel times and higher speed travel at the center (CBD have made vehicle usage more attractive. At the same time, bus travel times have been improved at the center of Tirana. However, the total travel times were not only enhanced, but at some locations (especially near the CBD where deteriorated. This study showed that traffic congestion problems are not solved but are shifted to other parts of Tirana Transportation System. In addition, public transportation revealed to be overcrowded, forcing passengers to use other modes like passenger car. Last but not least, other modes like bike or motorcycle riding should be encouraged as alternative to the passenger car.

  14. [Traveling with immunosuppression].

    Science.gov (United States)

    Birkenfeld, G

    2014-03-01

    The rapidly increasing number of patients with immunosuppression is followed by their expectation to lead-as much as possible-a "normal" life, including long-distance travel. The advice and preventive measures for diseases associated with travelling depend overall on the mode of the patient's immunosuppression. This report explains the individual preventive possibilities, limits and risks for travellers with asplenia, common variable immunodeficiency, chronic inflammatory bowel and rheumatic diseases, HIV, as well as for patients having undergone solid organ or bone marrow transplantation or chemotherapy.

  15. Traveling the Road to Educational Leadership

    Science.gov (United States)

    Handley, Junella D.

    2009-01-01

    For several years, the author has been traveling a path in school leadership that began in 2002, when she left the classroom to become a curriculum resource teacher. Today she holds the position of an assistant principal in the Orange County Public School District in Orlando, Florida. In this position, she participated in the mandatory Preparing…

  16. Malaria and Travelers

    Science.gov (United States)

    ... a CDC Malaria Branch clinician. malaria@cdc.gov Malaria and Travelers Recommend on Facebook Tweet Share Compartir ... may be at risk for infection. Determine if malaria transmission occurs at the destinations Obtain a detailed ...

  17. Carlson Wagonlit Travel

    CERN Multimedia

    Carlson Wagonlit Travel

    2005-01-01

    Dear customers, On 3 January we informed you that the airlines had decided to cease paying commission to travel agencies in Switzerland. This measure has since been progressively introduced, with rare exceptions. Consequently, in agreement with CERN, we are obliged to apply new transaction fees for private travel, with immediate effect. Carlson Wagonlit Travel (CWT) offers: A personalized, professional and competent consultancy service To seek the most economical and best solution adapted to your needs Neutrality in comparing prices and benefits Additional information concerning e.g. visa regulations, insurance, vaccinations, etc. Support in the event of problems We draw your attention to the fact that, in spite of the increase, these prices remain very competitive on today's market. Thank you for your trust and understanding. Yours truly, Carlson Wagonlit Travel CERN agency

  18. Travelers' Health: Cryptosporidiosis

    Science.gov (United States)

    ... cryptosporidiosis was associated with travel to Asia, particularly India, and Latin America. Another study found a 6. ... 22. Lalonde LF, Gajadhar AA. Effect of storage media, temperature, and time on preservation of Cryptosporidium parvum ...

  19. Travelers' Health: Rabies

    Science.gov (United States)

    ... from rabies in a UK traveller returning from India. Euro Surveill. 2005 Jul;10(30):E050728 5. ... Follow CDC Email Recommend Tweet Post RSS CDC Media Listen Watch YouTube About CDC Employment Newsroom Training/ ...

  20. Travel Inside the Ear

    Medline Plus

    Full Text Available ... Info » Hearing, Ear Infections, and Deafness Travel Inside the Ear Video When sound waves reach your ear, ... heard a soft sound or a loud sound. The sound passes through the outer ear and is ...

  1. Travel Inside the Ear

    Medline Plus

    Full Text Available ... stirrup. These are the smallest bones in your body. Together they are smaller than an orange seed. It then travels into the inner ear, which ... organizations Related Topics ...

  2. Traveling-wave photodetector

    Science.gov (United States)

    Hietala, Vincent M.; Vawter, Gregory A.

    1993-01-01

    The traveling-wave photodetector of the present invention combines an absorptive optical waveguide and an electrical transmission line, in which optical absorption in the waveguide results in a photocurrent at the electrodes of the electrical transmission line. The optical waveguide and electrical transmission line of the electrically distributed traveling-wave photodetector are designed to achieve matched velocities between the light in the optical waveguide and electrical signal generated on the transmission line. This velocity synchronization provides the traveling-wave photodetector with a large electrical bandwidth and a high quantum efficiency, because of the effective extended volume for optical absorption. The traveling-wave photodetector also provides large power dissipation, because of its large physical size.

  3. Travelers' Health: Diphtheria

    Science.gov (United States)

    ... Traveler Registration During Trip After Your Trip CDC-TV Videos Resources For Clinicians In-Clinic Quick Links ... toxoid vaccine before departure. After a childhood primary series and a booster dose during adolescence, routine booster ...

  4. Travelling or not?

    DEFF Research Database (Denmark)

    Helles, Rasmus; Lai, Signe Sophus

    2017-01-01

    The article presents a quantitative content analysis (Krippendorff, 2013) of the first episode of the 32 Danish drama series produced between 2005 and 2014. A number of these have experienced unprecedented, international success, with series such as Borgen (2010-13) and The Killing (2007......-12) travelling to multiple countries on several continents. The article shows that there are systematic differences in terms of formal characteristics, themes, and characters’ communicative style between the series that travel and the series that do not. Especially, the analysis finds that the presence of strong...... female lead characters is systematically linked to the positive travel patterns of the series, and that this cuts across different genres of series. The analysis also finds that series, which have explicitly low production values and simple narrative structure, systematically travels poorer....

  5. Travelers' Health: Leishmaniasis, Cutaneous

    Science.gov (United States)

    ... Water Disinfection Infographics for Travelers MERS Health Advisory poster Food and Water: What's Safer Health Advisory: MERS ... noise, they are small (approximately one-third the size of mosquitoes), and their bites might not be ...

  6. Travelers' Health: Rabies

    Science.gov (United States)

    ... Water Disinfection Infographics for Travelers MERS Health Advisory poster Food and Water: What's Safer Health Advisory: MERS ... weight may be small in relation to the size and number of wounds. RIG is difficult to ...

  7. Air Travel Health Tips

    Science.gov (United States)

    ... healthy snacks, like fresh or dried fruit, veggies, trail mix, or granola bars.Other helpful carry-on ... phone number with you in case of an emergency. If you have a severe food allergy, travel ...

  8. Travelers' Health: Leishmaniasis, Cutaneous

    Science.gov (United States)

    ... Climates Humanitarian Aid Workers Humanitarian Aid Workers in Ecuador Insurance International Adoption Jet Lag Last-Minute Travel ... military personnel, construction workers, and people who do research outdoors at night or twilight. However, even short- ...

  9. Travel patterns in China.

    Directory of Open Access Journals (Sweden)

    Tini Garske

    Full Text Available The spread of infectious disease epidemics is mediated by human travel. Yet human mobility patterns vary substantially between countries and regions. Quantifying the frequency of travel and length of journeys in well-defined population is therefore critical for predicting the likely speed and pattern of spread of emerging infectious diseases, such as a new influenza pandemic. Here we present the results of a large population survey undertaken in 2007 in two areas of China: Shenzhen city in Guangdong province, and Huangshan city in Anhui province. In each area, 10,000 randomly selected individuals were interviewed, and data on regular and occasional journeys collected. Travel behaviour was examined as a function of age, sex, economic status and home location. Women and children were generally found to travel shorter distances than men. Travel patterns in the economically developed Shenzhen region are shown to resemble those in developed and economically advanced middle income countries with a significant fraction of the population commuting over distances in excess of 50 km. Conversely, in the less developed rural region of Anhui, travel was much more local, with very few journeys over 30 km. Travel patterns in both populations were well-fitted by a gravity model with a lognormal kernel function. The results provide the first quantitative information on human travel patterns in modern China, and suggest that a pandemic emerging in a less developed area of rural China might spread geographically sufficiently slowly for containment to be feasible, while spatial spread in the more economically developed areas might be expected to be much more rapid, making containment more difficult.

  10. Why They Travel Alone?

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    "WHY Chinese Women Travel Alone" was the theme of a special edition of "Truth Talk" a popular talk show on China Central Television (CCTV), which focused on a few middle-aged women from different cultural backgrounds, social classes, and various educational backgrounds who had all branched out on their own for one reason or another. Each woman spoke of her experiences and feelings while travelling alone. They were all

  11. Freedom of Movement (Common Travel Area) (Travel Documentation) Bill 2014

    DEFF Research Database (Denmark)

    Butler, Graham; Hunt, Brian; Flanagan, Terence

    2014-01-01

    Private Members' Bill (legislation) introduced in Dáil Éireann (House of Deputies), Houses of the Oireachtas (Irish Parliament). An Act to reinforce the Common Travel Area by providing for passport-free travel for persons who are entitled to travel within the Common Travel Area without a passport...

  12. Freedom of Movement (Common Travel Area) (Travel Documentation) Bill 2014

    DEFF Research Database (Denmark)

    Butler, Graham; Hunt, Brian; Flanagan, Terence

    2014-01-01

    Private Members' Bill (legislation) introduced in Dáil Éireann (House of Deputies), Houses of the Oireachtas (Irish Parliament). An Act to reinforce the Common Travel Area by providing for passport-free travel for persons who are entitled to travel within the Common Travel Area without a passport...

  13. I can do perfectly well without a car! An exploration of stated preferences for middle-distance travel using Q-methodology

    NARCIS (Netherlands)

    Exel, N.J.A.; Graaf, de G.; Rietveld, P.

    2011-01-01

    This article presents the results of a study exploring travellers' preferences for middle-distance travel using Q-methodology. Respondents rank-ordered 42 opinion statements regarding travel choice and motivations for travel in general and for car and public transport as alternative travel modes.

  14. [Vaccination for international travelers].

    Science.gov (United States)

    Arrazola, M Pilar; Serrano, Almudena; López-Vélez, Rogelio

    2016-05-01

    Traveler's vaccination is one of the key strategies for the prevention of infectious diseases during international travel. The risk of acquiring an infectious disease is determined in each case by the characteristics of the traveler and the travel, so the pre-departure medical advice of the traveler must be individualized. The World Health Organization classifies travelerś vaccines into three groups. - Vaccines for routine use in national immunization programs: Haemophilus influenzae type b, hepatitis B, polio, measles-mumps-rubella, tetanus-diphtheria-whooping a cough, and chickenpox. - Vaccinations required by law in certain countries before to enter them: yellow fever, meningococcal disease and poliomyelitis. - Vaccines recommended depending on the circumstances: cholera, japanese encephalitis, tick-borne encephalitis, meningococcal disease, typhoid fever, influenza, hepatitis A, hepatitis B, rabies and BCG. This review is intended to introduce the reader to the field of international vaccination. Copyright © 2016 Elsevier España, S.L.U. y Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica. All rights reserved.

  15. Travels in Architectural History

    Directory of Open Access Journals (Sweden)

    Davide Deriu

    2016-11-01

    Full Text Available Travel is a powerful force in shaping the perception of the modern world and plays an ever-growing role within architectural and urban cultures. Inextricably linked to political and ideological issues, travel redefines places and landscapes through new transport infrastructures and buildings. Architecture, in turn, is reconstructed through visual and textual narratives produced by scores of modern travellers — including writers and artists along with architects themselves. In the age of the camera, travel is bound up with new kinds of imaginaries; private records and recollections often mingle with official, stereotyped views, as the value of architectural heritage increasingly rests on the mechanical reproduction of its images. Whilst students often learn about architectural history through image collections, the place of the journey in the formation of the architect itself shifts. No longer a lone and passionate antiquarian or an itinerant designer, the modern architect eagerly hops on buses, trains, and planes in pursuit of personal as well as professional interests. Increasingly built on a presumption of mobility, architectural culture integrates travel into cultural debates and design experiments. By addressing such issues from a variety of perspectives, this collection, a special 'Architectural Histories' issue on travel, prompts us to rethink the mobile conditions in which architecture has historically been produced and received.

  16. Closing the gap in travel medicine: reframing research questions for a new era.

    Science.gov (United States)

    Chen, Lin H; Leder, Karin; Wilson, Mary E

    2017-07-01

    Travel medicine needs are changing. New patterns of travel, including greater travel by individuals from emerging economies with different values in costs, risks and benefits, must be considered. This review aims to (1) highlight selected studies that have been published that address previously identified gaps in knowledge; (2) propose possible ways to consider questions regarding travel medicine practice for travelers from emerging economies, underscoring priorities for research focusing on these important populations; (3) highlight potential deficiencies in relevance of current international guidelines as they pertain to travelers from emerging economies; (4) frame research questions for travelers from emerging economies and (5) consider roles for ISTM in closing the gap. We reviewed past travel medicine research priorities published in 2010 to identify publications that responded to some research questions posed. We also reviewed CDC and WHO recommendations and assessed their applicability to travelers from emerging economies. Recent publications have responded to some research questions, but gaps remain and new questions have emerged. Re-framing of several key research questions is needed for travelers from emerging economies. A new challenge looms for traditional travel medicine fields to identify and attend to knowledge and guideline gaps, particularly to rethink questions regarding travel medicine to make them relevant for travelers from emerging economies. The International Society of Travel Medicine is well positioned to assist emerging economies assess their resources and needs, formulate research priorities and tailor the development of travel medicine into a framework aligned to their requirements.

  17. Sleeping sickness in travelers - do they really sleep?

    Directory of Open Access Journals (Sweden)

    Karin Urech

    2011-11-01

    Full Text Available The number of imported Human African Trypanosomiasis (HAT cases in non-endemic countries has increased over the last years. The objective of this analysis is to describe the clinical presentation of HAT in Caucasian travelers. Literature was screened (MEDLINE, Pubmed using the terms "Human African Trypanosomiasis", "travelers" and "expatriates"; all European languages except Slavic ones were included. Publications without clinical description of patients were only included in the epidemiological analysis. Forty-five reports on Caucasians with T.b. rhodesiense and 15 with T.b. gambiense infections were included in the analysis of the clinical parameters. Both species have presented with fever (T.b. rhodesiense 97.8% and T.b. gambiense 93.3%, headache (50% each and a trypanosomal chancre (T.b. rhodesiense 84.4%, T.b. gambiense 46.7%. While sleeping disorders dominate the clinical presentation of HAT in endemic regions, there have been only rare reports in travelers: insomnia (T.b. rhodesiense 7.1%, T.b. gambiense 21.4%, diurnal somnolence (T.b. rhodesiense 4.8%, T.b. gambiense none. Surprisingly, jaundice has been seen in 24.2% of the Caucasian T.b. rhodesiense patients, but has never been described in HAT patients in endemic regions. These results contrast to the clinical presentation of T.b. gambiense and T.b. rhodesiense HAT in Africans in endemic regions, where the presentation of chronic T.b. gambiense and acute T.b. rhodesiense HAT is different. The analysis of 14 reports on T.b. gambiense HAT in Africans living in a non-endemic country shows that neurological symptoms such as somnolence (46.2%, motor deficit (64.3% and reflex anomalies (14.3% as well as psychiatric symptoms such as hallucinations (21.4% or depression (21.4% may dominate the clinical picture. Often, the diagnosis has been missed initially: some patients have even been hospitalized in psychiatric clinics. In travelers T.b. rhodesiense and gambiense present as acute illnesses

  18. 41 CFR 301-71.303 - What data must we capture in our travel advance accounting system?

    Science.gov (United States)

    2010-07-01

    ... capture in our travel advance accounting system? 301-71.303 Section 301-71.303 Public Contracts and Property Management Federal Travel Regulation System TEMPORARY DUTY (TDY) TRAVEL ALLOWANCES AGENCY... must we capture in our travel advance accounting system? You must capture the following data: (a)...

  19. "I can do perfectly well without a car!": An exploration of stated preferences for middle-distance travel

    NARCIS (Netherlands)

    N.J.A. van Exel (Job); G. de Graaf; P. Rietveld (Piet)

    2011-01-01

    textabstractThis article presents the results of a study exploring travellers' preferences for middle-distance travel using Q-methodology. Respondents rank-ordered 42 opinion statements regarding travel choice and motivations for travel in general and for car and public transport as alternative

  20. 41 CFR 301-70.902 - Do we have any special responsibilities related to space available travel on our Government...

    Science.gov (United States)

    2010-07-01

    ... responsibilities related to space available travel on our Government aircraft? 301-70.902 Section 301-70.902 Public... responsibilities related to space available travel on our Government aircraft? Yes, except for travel authorized... for official travel. You must also certify that carrying a passenger in space available does not...

  1. 41 CFR 301-73.100 - Must we require employees to use the E-Gov Travel Service?

    Science.gov (United States)

    2010-07-01

    ... ETS migration plans and schedules by March 31, 2004 to the eTravel PMO, (see § 301-73.101). You must... employees to use the E-Gov Travel Service? 301-73.100 Section 301-73.100 Public Contracts and Property Management Federal Travel Regulation System TEMPORARY DUTY (TDY) TRAVEL ALLOWANCES AGENCY RESPONSIBILITIES...

  2. Season and Weather Effects on Travel-Related Mood and Travel Satisfaction

    Science.gov (United States)

    Ettema, Dick; Friman, Margareta; Olsson, Lars E.; Gärling, Tommy

    2017-01-01

    This study examines the effects of season and weather on mood (valence and activation) and travel satisfaction (measured by the Satisfaction with Travel Scale). Analyses are presented of 562 time-sampled morning commutes to work made by 363 randomly sampled people in three different Swedish cities asking them to use smartphones to report their mood in their home before and directly after the commutes. These reports as well as satisfaction with the commute obtained in summer and winter are linked to weather data and analyzed by means of fixed-effects regression analyses. The results reveal main effects of weather (temperature and precipitation) on mood and travel satisfaction (temperature, sunshine, precipitation, and wind speed). The effects of weather on mood and travel satisfaction differ depending on travel mode. Temperature leads to a more positive mood, wind leads to higher activation for public transport users, and sunshine leads to a more negative mood for cyclists and pedestrians. Sunshine and higher temperatures make travel more relaxed although not for cycling and walking, and rain and snow lead to a higher cognitive assessed quality of travel. PMID:28220100

  3. Regular transport dynamics produce chaotic travel times.

    Science.gov (United States)

    Villalobos, Jorge; Muñoz, Víctor; Rogan, José; Zarama, Roberto; Johnson, Neil F; Toledo, Benjamín; Valdivia, Juan Alejandro

    2014-06-01

    In the hope of making passenger travel times shorter and more reliable, many cities are introducing dedicated bus lanes (e.g., Bogota, London, Miami). Here we show that chaotic travel times are actually a natural consequence of individual bus function, and hence of public transport systems more generally, i.e., chaotic dynamics emerge even when the route is empty and straight, stops and lights are equidistant and regular, and loading times are negligible. More generally, our findings provide a novel example of chaotic dynamics emerging from a single object following Newton's laws of motion in a regularized one-dimensional system.

  4. Chikungunya virus infection in travellers to Australia.

    Science.gov (United States)

    Johnson, Douglas F; Druce, Julian D; Chapman, Scott; Swaminathan, Ashwin; Wolf, Josh; Richards, Jack S; Korman, Tony; Birch, Chris; Richards, Michael J

    2008-01-07

    We report eight recent cases of Chikungunya virus infection in travellers to Australia. Patients presented with fevers, rigors, headaches, arthralgia, and rash. The current Indian Ocean epidemic and Italian outbreak have featured prominently on Internet infectious disease bulletins, and Chikungunya virus infection had been anticipated in travellers from the outbreak areas. Diagnosis was by a generic alphavirus reverse transcriptase polymerase chain reaction with confirmatory sequencing. Prompt diagnosis of Chikungunya virus infections is of public health significance as the mosquito vectors for transmission exist in Australia. There is potential for this infection to spread in the largely naïve Australian population.

  5. Risk assessment in travel medicine.

    Science.gov (United States)

    Leggat, Peter A

    2006-01-01

    Risk assessment is an integral part of pre-travel and post- assessment. Risk assessment largely determines what health and safety advice and interventions are given within the relevant prevailing travel health guidelines. Risk assessment needs time and depends on information, including that given by the traveller. Risk assessment also needs to be documented. Risk assessment of the traveller preferably starts before they enter the consulting room, where travellers may complete a pre-travel health questionnaire. Armed with this information, risk assessment may be assisted by access to computerised travel health databases and the published literature. Experience of travel to the destination may also assist in risk assessment and the tour operator, overseas employer or agency, the traveller or even the travel health advisers themselves may provide this information.

  6. Searching the Internet for evidence of time travelers

    CERN Document Server

    Nemiroff, Robert J

    2013-01-01

    Time travel has captured the public imagination for much of the past century, but little has been done to actually search for time travelers. Here, three implementations of Internet searches for time travelers are described, all seeking a prescient mention of information not previously available. The first search covered prescient content placed on the Internet, highlighted by a comprehensive search for specific terms in tweets on Twitter. The second search examined prescient inquiries submitted to a search engine, highlighted by a comprehensive search for specific search terms submitted to a popular astronomy web site. The third search involved a request for a direct Internet communication, either by email or tweet, pre-dating to the time of the inquiry. Given practical verifiability concerns, only time travelers from the future were investigated. No time travelers were discovered. Although these negative results do not disprove time travel, given the great reach of the Internet, this search is perhaps the m...

  7. Valuation of travel time savings for intercity travel: The Madrid-Barcelona corridor

    DEFF Research Database (Denmark)

    Roman, Concepcion; Carlos Martin, Juan; Espino, Raquel

    2014-01-01

    We derive values of travel time savings (VOT) for the Madrid-Barcelona corridor, linking the two largest cities in Spain, based on the estimation of discrete choice models among the main public transport services in the corridor: air transport, high speed rail (HSR) and bus. The new HSR alternative...... to provide useful information to quantify users' benefits during the lifespan of a given project. We found, as expected, that HSR and air transport users exhibit substantially higher values for saving travel time than bus travellers. Also as expected, savings of waiting time are more valued than savings...... (which started to operate in February 2008) competes directly with one of the densest airline domestic markets in the world, and its introduction produced substantial improvements in level of service, achieving reductions in travel time of more than 50% over the conventional train. A specifically...

  8. [Counsel for traveling children].

    Science.gov (United States)

    Sorge, F; Gendrel, D

    2013-01-01

    Consultation of child traveler has two main objectives: to assess of health risk related to the child's health status and history and also the risk related to travel environment; to counsel and prescribe preventive measure to reduce these travel health risks. The evaluation is based on physical examination and a detailed interview including personal history and information regarding the regions of proposed travel. Up to date knowledge of the epidemiology of visited sites, preventive measures and presumptive treatment is required. Essential health recommendations include, in case of exposure, prevention of malaria, arthropod borned diseases and vaccine preventable diseases. For all destinations advice regarding prevention of diarrhea, accident risks and aggravation of preexisting chronic diseases is needed. Universal primary prevention counselling is valuable for all travellers regardless of their age. In the case of children, special attention must be given to food and water hygiene, sun and heat exposure, swimming risks and transports security measures. Evaluation of risk and health education take time and often several visits are needed to complete the immunization schedule before departure.

  9. Colored Traveling Salesman Problem.

    Science.gov (United States)

    Li, Jun; Zhou, MengChu; Sun, Qirui; Dai, Xianzhong; Yu, Xiaolong

    2015-11-01

    The multiple traveling salesman problem (MTSP) is an important combinatorial optimization problem. It has been widely and successfully applied to the practical cases in which multiple traveling individuals (salesmen) share the common workspace (city set). However, it cannot represent some application problems where multiple traveling individuals not only have their own exclusive tasks but also share a group of tasks with each other. This work proposes a new MTSP called colored traveling salesman problem (CTSP) for handling such cases. Two types of city groups are defined, i.e., each group of exclusive cities of a single color for a salesman to visit and a group of shared cities of multiple colors allowing all salesmen to visit. Evidences show that CTSP is NP-hard and a multidepot MTSP and multiple single traveling salesman problems are its special cases. We present a genetic algorithm (GA) with dual-chromosome coding for CTSP and analyze the corresponding solution space. Then, GA is improved by incorporating greedy, hill-climbing (HC), and simulated annealing (SA) operations to achieve better performance. By experiments, the limitation of the exact solution method is revealed and the performance of the presented GAs is compared. The results suggest that SAGA can achieve the best quality of solutions and HCGA should be the choice making good tradeoff between the solution quality and computing time.

  10. Organisational travel plans for improving health.

    Science.gov (United States)

    Hosking, Jamie; Macmillan, Alexandra; Connor, Jennie; Bullen, Chris; Ameratunga, Shanthi

    2010-03-17

    Dependence on car use has a number of broad health implications, including contributing to physical inactivity, road traffic injury, air pollution and social severance, as well as entrenching lifestyles that require environmentally unsustainable energy use. Travel plans are interventions that aim to reduce single-occupant car use and increase the use of alternatives such as walking, cycling and public transport, with a variety of behavioural and structural components. This review focuses on organisational travel plans for schools, tertiary institutes and workplaces. These plans are closely aligned in their aims and intervention design, having emerged from a shared theoretical base. To assess the effects of organisational travel plans on health, either directly measured, or through changes in travel mode. We searched the following electronic databases; Transport (1988 to June 2008), MEDLINE (1950 to June 2008), EMBASE (1947 to June 2008), CINAHL (1982 to June 2008), ERIC (1966 to June 2008), PSYCINFO (1806 to June 2008), Sociological Abstracts (1952 to June 2008), BUILD (1989 to 2002), Social Sciences Citation Index (1900 to June 2008), Science Citation Index (1900 to June 2008), Arts & Humanities Index (1975 to June 2008), Cochrane Database of Systematic Reviews (to August 2008), CENTRAL (to August 2008), Cochrane Injuries Group Register (to December 2009), C2-RIPE (to July 2008), C2-SPECTR (to July 2008), ProQuest Dissertations & Theses (1861 to June 2008). We also searched the reference lists of relevant articles, conference proceedings and Internet sources. We did not restrict the search by date, language or publication status. We included randomised controlled trials and controlled before-after studies of travel behaviour change programmes conducted in an organisational setting, where the measured outcome was change in travel mode or health. Both positive and negative health effects were included. Two authors independently assessed eligibility, assessed trial

  11. [Pregnancy and traveling].

    Science.gov (United States)

    Walentiny, C

    2009-03-01

    The second trimester is the safest time for travelling, because the pregnant woman feels generally most at ease and the risk of spontaneous abortion and pre-term labour is very low. Possible risks must be discussed with the obstetrician before travelling. If the pregnancy is uncomplicated most airlines allow flying up to the 36th (domestic flights) and 35th (international flights) week of gestation. Unless the fetal oxygen supply is already impaired at ground level due to an underlying disease, flying does not pose a risk of fetal hypoxia. Radiation exposure during a long distant flight is low compared to the average annual exposure dosage, but the risk of thrombosis is increased. Altitudes up to 2,500 m pose no problem. Sufficient time to acclimatize must be taken when travelling to high altitudes and exercise kept to a minimum. Scuba diving is contraindicated. Since only a few drugs are completely safe during pregnancy a thorough risk/benefit evaluation is mandatory. Treatment of infections can be considerably complicated, but any necessary treatment should not be withheld because of the fear of potential fetal injury. Good knowledge of local medical resources is essential before travelling. Several personal protective measures minimize the risk of infection: food and water precautions, protection from insect bites and avoidance of crowds, unsafe sex and, if need be, freshwater. Many vaccinations are recommended for travellers. However, live vaccines are contraindicated in pregnant women because of theoretical considerations. Exceptionally a yellow fever vaccination may be given after the first trimester. Killed, inactivated or polysaccharide vaccines can be given after the first trimester after a thorough risk/benefit evaluation. Because of the potentially devastating effect of malaria to the mother and the child, travelling to endemic malaria regions should be avoided. If the risk of infection is high chemoprophylaxis with mefloquine is indicated. In low

  12. Culture shock and travelers.

    Science.gov (United States)

    Stewart, L; Leggat, P A

    1998-06-01

    As travel has become easier and more affordable, the number of people traveling has risen sharply. People travel for many and varied reasons, from the business person on an overseas assignment to backpackers seeking new and exotic destinations. Others may take up residence in different regions, states or countries for family, business or political reasons. Other people are fleeing religious or political persecution. Wherever they go and for whatever reason they go, people take their culture with them. Culture, like language, is acquired innately in early childhood and is then reinforced through formal and complex informal social education into adulthood. Culture provides a framework for interpersonal and social interactions. Therefore, the contact with a new culture is often not the exciting or pleasurable experience anticipated. When immersed in a different culture, people no longer know how to act when faced with disparate value systems. Contact with the unfamiliar culture can lead to anxiety, stress, mental illness and, in extreme cases, physical illness and suicide. "Culture shock" is a term coined by the anthropologist Oberg. It is the shock of the new. It implies that the experience of the new culture is an unpleasant surprise or shock, partly because it is unexpected and partly because it can lead to a negative evaluation of one's own culture. It is also known as cross-cultural adjustment, being that period of anxiety and confusion experienced when entering a new culture. It affects people intellectually, emotionally, behaviorally and physically and is characterized by symptoms of psychological distress. Culture shock affects both adults and children. In travelers or workers who have prolonged sojourns in foreign countries, culture shock may occur not only as they enter the new culture, but also may occur on their return to their original culture. Children may also experience readjustment problems after returning from leading sheltered lives in expatriate

  13. Time a traveler's guide

    CERN Document Server

    Pickover, Clifford A

    1998-01-01

    ""Bucky Fuller thought big,"" Wired magazine recently noted, ""Arthur C. Clarke thinks big, but Cliff Pickover outdoes them both."" In his newest book, Cliff Pickover outdoes even himself, probing a mystery that has baffled mystics, philosophers, and scientists throughout history--What is the nature of time? In Time: A Traveler's Guide, Pickover takes readers to the forefront of science as he illuminates the most mysterious phenomenon in the universe--time itself. Is time travel possible? Is time real? Does it flow in one direction only? Does it have a beginning and an end? What is eternity? P

  14. Malaria prevention in travelers.

    Science.gov (United States)

    Genton, Blaise; D'Acremont, Valérie

    2012-09-01

    A common approach to malaria prevention is to follow the "A, B, C, D" rule: Awareness of risk, Bite avoidance, Compliance with chemoprophylaxis, and prompt Diagnosis in case of fever. The risk of acquiring malaria depends on the length and intensity of exposure; the risk of developing severe disease is primarily determined by the health status of the traveler. These parameters need to be assessed before recommending chemoprophylaxis and/or stand-by emergency treatment. This review discusses the different strategies and drug options available for the prevention of malaria during and post travel.

  15. Design Research of TIANDITU (Map Worl)-Based Geographic Information System for Travelling Service

    Science.gov (United States)

    Zhang, J.; Zhang, H.; Wang, C.

    2014-04-01

    TIANDITU (Map World) is the public version of the National Platform for Common Geospatial Information Service, and the travelling channel is TIANDITU-based geographic information platform for travelling service. With the development of tourism, traditional ways for providing travelling information cannot meet the needs of travelers. As such, the travelling channel of TIANDITU focuses on providing travel information abundantly and precisely, which integrated the geographic information data of TIANDITU Version 2.0 and the authoritative information resources from China National Tourism Administration. Furthermore, spatial positioning, category and information query of various travelling information were offered for the public in the travelling channel. This research mainly involves three important parts: the system design, key technologies of the system design and application examples. Firstly, this paper introduced the design of TIANDITU-based geographic information system for travelling service, and the general and database design were described in detail. The designs for general, database and travelling service above should consider lots of factors which illustrated in the paper in order to guarantee the efficient service. The process of system construction, the content of geographic information for travelling and system functions of geographic information for travelling are also proposed via diagram in this part. Then several key technologies were discussed, including the travelling information integration for main node and among nodes, general architecture design and management system for travelling channel, web portals and system interface. From the perspective of main technologies, this part describes how TIANDITU travelling channel can realize various functions and reach the requirements from different users. Finally, three application examples about travelling information query were listed shortly. The functions and search results are shown clearly in this

  16. Communicating something confidential while travelling by train : the use of a telephone conversation versus silent modes

    NARCIS (Netherlands)

    Tillema, Taede; Schwanen, Tim; Dijst, Martin

    2009-01-01

    Wireless ICTs are often used in public transport. Using survey data collected amongst 98 train travellers this article aims to gain insight into important factors that affect train travellers' intentions to communicate with distant others while travelling. More specifically, the focus is on the deci

  17. 41 CFR 301-72.203 - When may we limit traveler reimbursement for a cash payment?

    Science.gov (United States)

    2010-07-01

    ... traveler reimbursement for a cash payment? 301-72.203 Section 301-72.203 Public Contracts and Property... Carrier Transportation Services § 301-72.203 When may we limit traveler reimbursement for a cash payment... the traveler must not exceed the cost which would have been properly chargeable to the Government had...

  18. Communicating something confidential while travelling by train : the use of a telephone conversation versus silent modes

    NARCIS (Netherlands)

    Tillema, Taede; Schwanen, Tim; Dijst, Martin

    Wireless ICTs are often used in public transport. Using survey data collected amongst 98 train travellers this article aims to gain insight into important factors that affect train travellers' intentions to communicate with distant others while travelling. More specifically, the focus is on the

  19. 41 CFR 109-38.5103 - Motor vehicle utilization standards.

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 3 2010-07-01 2010-07-01 false Motor vehicle... AVIATION, TRANSPORTATION, AND MOTOR VEHICLES 38-MOTOR EQUIPMENT MANAGEMENT 38.51-Utilization of Motor Equipment § 109-38.5103 Motor vehicle utilization standards. (a) The following average utilization...

  20. Greenhouse Earth: A Traveling Exhibition

    Energy Technology Data Exchange (ETDEWEB)

    Booth, W.H.; Caesar, S.

    1992-09-01

    The Franklin Institute Science Museum provided an exhibit entitled the Greenhouse Earth: A Traveling Exhibition. This 3500 square-foot exhibit on global climate change was developed in collaboration with the Association of Science-Technology Centers. The exhibit opened at The Franklin Institute on February 14, 1992, welcoming 291,000 visitors over its three-month stay. During its three-year tour, Greenhouse Earth will travel to ten US cities, reaching two million visitors. Greenhouse Earth aims to deepen public understanding of the scientific issues of global warming and the conservation measures that can be taken to slow its effects. The exhibit features hands-on exhibitry, interactive computer programs and videos, a theater production, a demonstration cart,'' guided tours, and lectures. supplemental educational programs at the Institute included a teachers preview, a symposium on climate change, and a satellite field trip.'' The development of Greenhouse Earth included front-end and formative evaluation procedures. Evaluation includes interviews with visitors, prototypes, and summative surveys for participating museums. During its stay in Philadelphia, Greenhouse Earth was covered by the local and national press, with reviews in print and broadcast media. Greenhouse Earth is the first large-scale museum exhibit to address global climate change.

  1. Travel health. Part 1: preparing the tropical traveller.

    Science.gov (United States)

    Carroll, Bernadette; Daniel, Amanda; Behrens, Ron H

    The health threats of modern day travel change as population, wealth and tourism increase across the world. A series of three articles have been written to describe the spectrum of health issues associated with travel. Pre-travel health advice has become more focused on risk assessment and educating the traveller about infectious disease and the more frequent non-infectious hazards associated with travel, while ensuring they are not unnecessarily exposed to injury from vaccines and drugs. In part one, the role of the health advisor and the needs of the traveller are examined. The importance of risk assessment during a consultation is described and factors that influence recommendations and prescribing are explored. As most travel-associated morbidity and mortality is non-vaccine preventable, the focus of the pre-travel consultation should be on educating the traveller and influencing behaviour change. The second article in this series deals with the highest risk group of travellers--residents who visit friends and relatives. It highlights their specific problems and special needs and how to influence their risk of disease by addressing their health beliefs and their cultural dimension of risk. The third article explores the common, and not so common, clinical problems found in returned travellers. Nurses have to deal with a large range of clinical problems and diagnostic dilemmas when attending to the returned traveller. The review provides a perspective on the frequency and severity of problems and how nurses should manage travel associated disease.

  2. 41 CFR 301-11.28 - As a traveler on official business, am I required to pay applicable lodging taxes?

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 4 2010-07-01 2010-07-01 false As a traveler on official business, am I required to pay applicable lodging taxes? 301-11.28 Section 301-11.28 Public... ALLOWABLE TRAVEL EXPENSES 11-PER DIEM EXPENSES General Rules § 301-11.28 As a traveler on official business...

  3. Incidence, risk factors and treatment of diarrhoea among Dutch travellers: reasons not to routinely prescribe antibiotics.

    Science.gov (United States)

    Belderok, Sanne-Meike; van den Hoek, Anneke; Kint, Joan A; Schim van der Loeff, Maarten F; Sonder, Gerard Jb

    2011-10-29

    Travellers' diarrhoea (TD) is the most common infectious disease among travellers. In the Netherlands, stand-by or prophylactic antibiotics are not routinely prescribed to travellers. This study prospectively assessed the incidence rate, risk factors, and treatment of TD among immunocompetent travellers. Persons who attended the travel clinic of the Public Health Service Amsterdam in 2006-2007 before short-term travel to tropical and subtropical countries were invited to answer a questionnaire regarding sociodemographics and travel purpose; they were also asked to keep a daily structured travel diary, recording their itinerary, symptoms, and self-medication or consultation with a doctor. Diarrhoea episodes containing blood or mucous were considered severe. Of 1202 travellers, the median age was 38 years, and the median travel duration 3 weeks. Of all episodes, 96% were mild. The median duration of TD was 2 days and significantly shorter in subsequent episodes compared to first episodes (p sex, a Western country of birth, and tourism as the purpose of travel. The lowest risk was in travellers to South America. An independent risk factor for subsequent episodes was female sex. In total, 5% of travellers used antibiotics; of those, 92% had mild diarrhoea, and 53% received antibiotics over the counter. TD is common among travellers, but the overall course is mild, not requiring treatment. The incidence rates for first and second episodes are comparable. Female sex is a risk factor for the first episode, as well as subsequent ones. Prescription antibiotics are not needed in short-term healthy travellers.

  4. Travel Inside the Ear

    Medline Plus

    Full Text Available ... Search form Search A–Z Index Español Menu Home Health Info Hearing, Ear Infections, and Deafness Balance ... Committees Contact Us Get Involved You are here Home » Health Info » Hearing, Ear Infections, and Deafness Travel ...

  5. Flu and Holiday Travel

    Centers for Disease Control (CDC) Podcasts

    2010-12-13

    This podcast explains the ways people can stay healthy and avoid the flu when traveling this winter.  Created: 12/13/2010 by National Center for Emerging and Zoonotic Infectious Diseases (NCEZID).   Date Released: 12/13/2010.

  6. Gulliver's Travels. [Lesson Plan].

    Science.gov (United States)

    Rooks, Kirsten; McLean, Mary

    Based on Jonathan Swift's novel "Gulliver's Travels," this lesson plan presents activities designed to help students understand that Swift comments on undesirable outcomes of advances in science; and other authors have also warned against abuse of science. The main activity of the lesson involves students developing a poster illustrating views of…

  7. Traveling in France.

    Science.gov (United States)

    Philyaw, Henry; And Others

    This minicourse guide for teachers of French is intended to help motivate and prepare students for travel in France. Activities are outlined in eleven related areas, including (1) planning for the trip, (2) currency, (3) going through customs, (4) tipping, (5) shopping, (6) guided tours, (7) touring on your own, (8) social life and entertainment,…

  8. Beijing Time Travel

    Institute of Scientific and Technical Information of China (English)

    ROBERT T.TUOHEY

    2010-01-01

    @@ Dally travel within Beijing need not be anymore troublesome than going about any major metropolis.Simply,certain basic facts need to be kept in mind,and ordinary precautions taken.Essentially,it's the same situation as midtown Manhattan or downtown Tokyo,except everyone's speaking Chinese.

  9. Beijing Time Travel

    Institute of Scientific and Technical Information of China (English)

    ROBERT; T.TUOHEY

    2010-01-01

    Daily travel within Beijing need not be anymore troublesome than going about any major metropolis.Simply,certain basic facts need to be kept in mind,and ordinary precautions taken.Essentially,it’s the same situation as midtown Manhattan or downtown Tokyo,except everyone’s speaking Chinese.

  10. Travelers' Health: Hepatitis A

    Science.gov (United States)

    ... total anti-HAV result and a negative IgM anti-HAV result indicate past infection or vaccination and immunity. The presence of serum IgM anti- ... the risk for adverse effects, screening for total anti-HAV before travel can be ... Postvaccination testing for serologic response is not indicated. ...

  11. Zero Energry Travel

    CERN Document Server

    Ahmad, Othman; Chekima, Ali

    2011-01-01

    It is fundamentally possible to travel with zero energy based on Newton Laws of Motion. According to the first law of motion, a body will continue to travel for infinite distance unless it is acted upon by another force. For a body in motion, the force which stops perpetual motion is friction. However, there are many circumstances that friction is zero, for example in space, where there is vacuum. On earth, gravity makes objects to be in constant contact with each other generating friction but technology exists to separate them in the air using powerful magnetic forces. At low speeds, the friction caused by air is minimal but we can create vacuum even on land for high speed travel. Another condition for travelling is for it to stop at its destination. On land, we can recover the kinetic energy back into electrical energy using brushless permanent magnet generators. These generators can also convert electric energy into kinetic energy in order to provide motion. This article reviews technologies that will allo...

  12. Motor Neurons

    DEFF Research Database (Denmark)

    Hounsgaard, Jorn

    2017-01-01

    Motor neurons translate synaptic input from widely distributed premotor networks into patterns of action potentials that orchestrate motor unit force and motor behavior. Intercalated between the CNS and muscles, motor neurons add to and adjust the final motor command. The identity and functional...... properties of this facility in the path from synaptic sites to the motor axon is reviewed with emphasis on voltage sensitive ion channels and regulatory metabotropic transmitter pathways. The catalog of the intrinsic response properties, their underlying mechanisms, and regulation obtained from motoneurons...... in in vitro preparations is far from complete. Nevertheless, a foundation has been provided for pursuing functional significance of intrinsic response properties in motoneurons in vivo during motor behavior at levels from molecules to systems....

  13. Homopolar motor with dual rotors

    Energy Technology Data Exchange (ETDEWEB)

    Hsu, John S. (Oak Ridge, TN)

    1998-01-01

    A homopolar motor (10) has a field rotor (15) mounted on a frame (11) for rotation in a first rotational direction and for producing an electromagnetic field, and an armature rotor (17) mounted for rotation on said frame (11) within said electromagnetic field and in a second rotational direction counter to said first rotational direction of said field rotor (15). The two rotors (15, 17) are coupled through a 1:1 gearing mechanism (19), so as to travel at the same speed but in opposite directions. This doubles the output voltage and output power, as compared to a motor in which only the armature is rotated. Several embodiments are disclosed.

  14. Homopolar motor with dual rotors

    Energy Technology Data Exchange (ETDEWEB)

    Hsu, J.S.

    1998-12-01

    A homopolar motor has a field rotor mounted on a frame for rotation in a first rotational direction and for producing an electromagnetic field, and an armature rotor mounted for rotation on said frame within said electromagnetic field and in a second rotational direction counter to said first rotational direction of said field rotor. The two rotors are coupled through a 1:1 gearing mechanism, so as to travel at the same speed but in opposite directions. This doubles the output voltage and output power, as compared to a motor in which only the armature is rotated. Several embodiments are disclosed. 7 figs.

  15. Valuation of Travel Time and TravelIer Information

    NARCIS (Netherlands)

    Rietveld, Piet

    2003-01-01

    The value of travel time plays an important role in cost benefit analysis of infrastructureprojects. However, the issue of uncertainty on travel times and the implications this has forestimations of travel time values has received much less attention in the literature. In thispaper we compare

  16. Valuation of Travel Time and TravelIer Information

    NARCIS (Netherlands)

    Rietveld, Piet

    2003-01-01

    The value of travel time plays an important role in cost benefit analysis of infrastructureprojects. However, the issue of uncertainty on travel times and the implications this has forestimations of travel time values has received much less attention in the literature. In thispaper we compare variou

  17. Traveler's Health: Avoid Bug Bites

    Science.gov (United States)

    ... Blood Clots Bug Bites Business Travel Cold Climates Counterfeit Drugs Cruise Ship Travel Families with Children Fish ... insect repellents that contain at least 20% DEET (products include Cutter Backwoods and Off! Deep Woods) for ...

  18. Epidemic spreading by objective traveling

    Science.gov (United States)

    Tang, Ming; Liu, Zonghua; Li, Baowen

    2009-07-01

    A fundamental feature of agent traveling in social networks is that traveling is usually not a random walk but with a specific destination and goes through the shortest path from starting to destination. A serious consequence of the objective traveling is that it may result in a fast epidemic spreading, such as SARS etc. In this letter we present a reaction-traveling model to study how the objective traveling influences the epidemic spreading. We consider a random scale-free meta-population network with sub-population at each node. Through a SIS model we theoretically prove that near the threshold of epidemic outbreak, the objective traveling can significantly enhance the final infected population and the infected fraction at a node is proportional to its betweenness for the traveling agents and approximately proportional to its degree for the non-traveling agents. Numerical simulations have confirmed the theoretical predictions.

  19. 75 FR 43395 - Campaign Travel

    Science.gov (United States)

    2010-07-26

    ... Campaign Travel AGENCY: Federal Election Commission. ACTION: Announcement of effective date. SUMMARY: On... of the Honest Leadership and Open Government Act governing campaign travel on noncommercial aircraft.... SUPPLEMENTARY INFORMATION: On December 7, 2009, the Commission published final rules governing campaign...

  20. Knowledge Representation in Travelling Texts

    DEFF Research Database (Denmark)

    Mousten, Birthe; Locmele, Gunta

    2014-01-01

    Today, information travels fast. Texts travel, too. In a corporate context, the question is how to manage which knowledge elements should travel to a new language area or market and in which form? The decision to let knowledge elements travel or not travel highly depends on the limitation...... and the purpose of the text in a new context as well as on predefined parameters for text travel. For texts used in marketing and in technology, the question is whether culture-bound knowledge representation should be domesticated or kept as foreign elements, or should be mirrored or moulded—or should not travel...... at all! When should semantic and pragmatic elements in a text be replaced and by which other elements? The empirical basis of our work is marketing and technical texts in English, which travel into the Latvian and Danish markets, respectively....

  1. Optimal Intra-Urban Hierarchy of Activity Centers—A Minimized Household Travel Energy Consumption Approach

    Directory of Open Access Journals (Sweden)

    Jie Zhang

    2015-08-01

    Full Text Available An intra-urban hierarchy of activity centers interconnected by non-motorized and public transportation is broadly believed to be the ideal urban spatial structure for sustainable cities. However, the proper hinterland area for centers at each level lacks empirical study. Based on the concentric structure of everyday travel distances, working centers, shopping centers, and neighborhood centers are extracted from corresponding types of POIs in 286 Chinese cities at the prefectural level and above. A U-shaped curve between Household Transportation Energy Consumption (HTEC per capita and center density at each of the three levels has been found through regression analysis. An optimal intra-urban hierarchy of activity centers is suggested to construct energy-efficient cities.

  2. CARLSON WAGONLIT TRAVEL

    CERN Multimedia

    CARLSON WAGONLIT TRAVEL

    2004-01-01

    CARLSON WAGONLIT TRAVEL would like to remind you of the entry formalities applicable to those travelling to the United States. Nationals of Switzerland and of the following countries : Andorra, Australia, Austria, Belgium, Brunei, Denmark, Finland, France, Germany, Iceland, Ireland, Italy, Japan, Liechtenstein, Luxemburg, Monaco, Netherlands, New Zealand, Norway, Portugal, San Marino, Singapore, Slovenia, Spain, Sweden and the United Kingdom, entering the United States under the Visa Waiver Program (no visa requirement), must be in possession of an machine-readable passport that is valid for at least six months after the date of the return trip. Children, including infants, must have their own passport. An entry in the parents' passport is not sufficient. For entry into the United States, an e-ticket (fax or e-mail confirmation or passenger receipt) or a return ticket to the departure point or a ticket to a subsequent onward destination (valid for 90 days) must be presented together with the green ...

  3. Diversity does not travel!

    DEFF Research Database (Denmark)

    Lund, Rebecca; Tienari, Janne

    2013-01-01

    In this chapter we offer insights into the social construction of diversity in Finnish organizations and society. In Finnish organizations, gender is highlighted while other markers of diversity are blotted out. 'Non-Finns' become subject to cultural assimilation. The US-based concept of Diversity...... Management becomes adopted and adapted in particular ways. Standardized concepts of diversity and its management do not travel, rather they become translated locally. In organizational practice, globalization is slow and laborious....

  4. Malaria and Tropical Travel

    Centers for Disease Control (CDC) Podcasts

    2008-05-15

    Malaria is a serious mosquito-borne disease that can lead to death. This podcast discusses malaria risk when traveling to tropical areas, as well as how to protect yourself and your family from malaria infection.  Created: 5/15/2008 by National Center for Zoonotic, Vector-Borne, and Enteric Diseases (NCZVED).   Date Released: 5/29/2008.

  5. Aging and space travel

    Science.gov (United States)

    Mohler, S. R.

    1982-01-01

    The matter of aging and its relation to space vehicle crewmembers undertaking prolonged space missions is addressed. The capabilities of the older space traveler to recover from bone demineralization and muscle atrophy are discussed. Certain advantages of the older person are noted, for example, a greater tolerance of monotony and repetitious activities. Additional parameters are delineated including the cardiovascular system, the reproductive system, ionizing radiation, performance, and group dynamics.

  6. On the Treatment of Airline Travelers in Mathematical Models

    Science.gov (United States)

    Johansson, Michael A.; Arana-Vizcarrondo, Neysarí; Biggerstaff, Brad J.; Staples, J. Erin; Gallagher, Nancy; Marano, Nina

    2011-01-01

    The global spread of infectious diseases is facilitated by the ability of infected humans to travel thousands of miles in short time spans, rapidly transporting pathogens to distant locations. Mathematical models of the actual and potential spread of specific pathogens can assist public health planning in the case of such an event. Models should generally be parsimonious, but must consider all potentially important components of the system to the greatest extent possible. We demonstrate and discuss important assumptions relative to the parameterization and structural treatment of airline travel in mathematical models. Among other findings, we show that the most common structural treatment of travelers leads to underestimation of the speed of spread and that connecting travel is critical to a realistic spread pattern. Models involving travelers can be improved significantly by relatively simple structural changes but also may require further attention to details of parameterization. PMID:21799782

  7. On the treatment of airline travelers in mathematical models.

    Directory of Open Access Journals (Sweden)

    Michael A Johansson

    Full Text Available The global spread of infectious diseases is facilitated by the ability of infected humans to travel thousands of miles in short time spans, rapidly transporting pathogens to distant locations. Mathematical models of the actual and potential spread of specific pathogens can assist public health planning in the case of such an event. Models should generally be parsimonious, but must consider all potentially important components of the system to the greatest extent possible. We demonstrate and discuss important assumptions relative to the parameterization and structural treatment of airline travel in mathematical models. Among other findings, we show that the most common structural treatment of travelers leads to underestimation of the speed of spread and that connecting travel is critical to a realistic spread pattern. Models involving travelers can be improved significantly by relatively simple structural changes but also may require further attention to details of parameterization.

  8. Logistic Regression Models to Forecast Travelling Behaviour in Tripoli City

    Directory of Open Access Journals (Sweden)

    Amiruddin Ismail

    2011-01-01

    Full Text Available Transport modes are very important to Libyan’s Tripoli residents for their daily trips. However, the total number of own car and private transport namely taxi and micro buses on the road increases and causes many problems such as traffic congestion, accidents, air and noise pollution. These problems then causes other related phenomena to the travel activities such as delay in trips, stress and frustration to motorists which may affect their productivity and efficiency to both workers and students. Delay may also increase travel cost as well inefficiency in trips making if compare to other public transport users in some Arabs cities. Switching to public transport (PT modes alternatives such as buses, light rail transit and underground train could improve travel time and travel costs. A transport study has been carried out at Tripoli City Authority areas among own car users who live in areas with inadequate of private transport and poor public transportation services. Analyses about relation between factors such as travel time, travel cost, trip purpose and parking cost have been made to answer research questions. Logistic regression technique has been used to analyse these factors that influence users to switch their trips mode to public transport alternatives.

  9. [Traveling with small children].

    Science.gov (United States)

    Olivier, C

    1997-01-01

    Traveling with children especially in the tropics requires special planning. Contraindications are rare but care providers should obtain information about medical and transfusional facilities at the destination. Children should receive all vaccinations required for international travel and for specific countries, taking into account age, location, duration of stay, and purpose of trip. A first aid kit should be packed containing a thermometer, bandages, antiseptic agents, a total sunscreen preparation, a mosquito net, sterile compresses, tablets for water disinfection, and indispensable medications (antimalarial agents, antipyretics, oral rehydration solutions, antiemetics, and eye wash). The main indication for chemoprophylaxis is malaria. Chloroquine is recommended for most locations but proguanil may be necessary in areas of resistance. Special attention must be paid to skin care in infants: maintaining cleanliness, avoiding cuts insofar as possible, and treating any wounds. Clothing must be carefully laundered and adequate to prevent overexposure to sunlight and insect bites. Insect bites must also be prevented by applying repellents, using mosquito nets, and wearing insecticide-treated garments. Handwashing by people who prepare meals and by the children before eating is important to prevent food poisoning. Breast feeding is advisable for infants. Thorough cooking of meats, rinsing of fresh produce, drinking of bottled beverages, and sterilization of water are also important food safety measures. These precautions are usually adequate to allow safe travel with children.

  10. Time - A Traveler's Guide

    Science.gov (United States)

    Pickover, Clifford A.

    1999-09-01

    "Bucky Fuller thought big," Wired magazine recently noted, "Arthur C. Clarke thinks big, but Cliff Pickover outdoes them both." In his newest book, Cliff Pickover outdoes even himself, probing a mystery that has baffled mystics, philosophers, and scientists throughout history--What is the nature of time?In Time: A Traveler's Guide , Pickover takes readers to the forefront of science as he illuminates the most mysterious phenomenon in the universe--time itself. Is time travel possible? Is time real? Does it flow in one direction only? Does it have a beginning and an end? What is eternity? Pickover's book offers a stimulating blend of Chopin, philosophy, Einstein, and modern physics, spiced with diverting side-trips to such topics as the history of clocks, the nature of free will, and the reason gold glitters. Numerous diagrams ensure readers will have no trouble following along.By the time we finish this book, we understand a wide variety of scientific concepts pertaining to time. And most important, we will understand that time travel is, indeed, possible.

  11. Carlson Wagonlit Travel

    CERN Multimedia

    2006-01-01

    Carlson Wagonlit Travel wishes to remind you of the following conditions concerning travel to the USA. Passport conditions Since 26 October 2004, nationals of the countries covered by the US Visa Waiver Programme have been required to present a valid machine-readable passport when entering the United States. Failing this, they require a valid US non-immigrant visa in addition to their passport. Passports issued after 25 October 2005 must also bear a digital photograph. Passports issued after 25 October 2006 must contain biometric data to allow visa-free entry to the US. Advanced Passenger Information System (APIS) form Since 4 October 2005, all non-US citizens travelling to the USA have been required to complete the APIS form before departure and present it when they check in. This new procedure will certainly increase the time it takes to check in. We therefore advise passengers to present themselves at the respective check-in desk in good time. The APIS form can be downloaded from our homepage: w...

  12. Motor syndromes.

    Science.gov (United States)

    Corea, Francesco; Micheli, Sara

    2012-01-01

    Motor disturbances alone or associated with other focal deficits are the most common symptoms suggesting a neurovascular event. An appropriate clinical assessment of these signs and symptoms may help physicians to better diagnose and to both better treat and predict outcome. In this paper the main clinical features of motor deficit are described together with other motor-related events such as ataxia and movement disturbances.

  13. Superluminal travel requires negative energies

    OpenAIRE

    Olum, Ken D.

    1998-01-01

    I investigate the relationship between faster-than-light travel and weak-energy-condition violation, i.e., negative energy densities. In a general spacetime it is difficult to define faster-than-light travel, and I give an example of a metric which appears to allow superluminal travel, but in fact is just flat space. To avoid such difficulties, I propose a definition of superluminal travel which requires that the path to be traveled reach a destination surface at an earlier time than any neig...

  14. Home range and travels

    Science.gov (United States)

    Stickel, L.F.; King, John A.

    1968-01-01

    The concept of home range was expressed by Seton (1909) in the term 'home region,' which Burr (1940, 1943) clarified with a definition of home range and exemplified in a definitive study of Peromyscus in the field. Burt pointed out the ever-changing characteristics of home-range area and the consequent absence of boundaries in the usual sense--a finding verified by investigators thereafter. In the studies summarized in this paper, sizes of home ranges of Peromyscus varied within two magnitudes, approximately from 0.1 acre to ten acres, in 34 studies conducted in a variety of habitats from the seaside dunes of Florida to the Alaskan forests. Variation in sizes of home ranges was correlated with both environmental and physiological factors; with habitat it was conspicuous, both in the same and different regions. Food supply also was related to size of home range, both seasonally and in relation to habitat. Home ranges generally were smallest in winter and largest in spring, at the onset of the breeding season. Activity and size also were affected by changes in weather. Activity was least when temperatures were low and nights were bright. Effects of rainfall were variable. Sizes varied according to sex and age; young mice remained in the parents' range until they approached maturity, when they began to travel more widely. Adult males commonly had larger home ranges than females, although there were a number of exceptions. An inverse relationship between population density and size of home range was shown in several studies and probably is the usual relationship. A basic need for activity and exploration also appeared to influence size of home range. Behavior within the home range was discussed in terms of travel patterns, travels in relation to home sites and refuges, territory, and stability of size of home range. Travels within the home range consisted of repeated use of well-worn trails to sites of food, shelter, and refuge, plus more random exploratory travels

  15. Travel with hydrogen

    Science.gov (United States)

    Hermans, L. J. F. Jo

    2017-03-01

    In the field of transportation, hydrogen does not have a particularly glorious history. Just think of the dozens of hydrogen airships destroyed by fire over the years, with the Hindenburg disaster in 1937 as the most famous example. Now H2 is trying a comeback on the road, often in combination with a fuel cell and an electric motor to power the car.

  16. Rabies vaccination for international travelers.

    Science.gov (United States)

    Gautret, Philippe; Parola, Philippe

    2012-01-05

    Rabies prevention in travelers is a controversial issue. According to experts, the decision to vaccinate results from an individual risk assessment based on the duration of stay, the likelihood of engagement in at-risk activities, the age of the traveler, the rabies endemicity and access to appropriate medical care in the country of destination. However, no detailed information is available regarding the last two determinants in many regions. Twenty-two cases of rabies were reported in tourists, expatriates and migrant travelers over the last decade, including three cases following short-term travel of no more than two weeks. Studies on rabies post-exposure prophylaxis (PEP) in travelers show that overall, 0.4% (range 0.01-2.3%) of travelers have experienced an at-risk bite per month of stay in a rabies-endemic country, while 31% of expatriates and 12% of tourists were vaccinated against rabies before traveling. The main reason cited by travelers for not being vaccinated is the cost of the vaccine. The majority of patients who sustained a high risk injury was not vaccinated against rabies before traveling and were not properly treated abroad. From available studies, the following risk factors for injuries sustained from potentially rabid animals may be identified: traveling to South-East Asia, India or North Africa, young age, and traveling for tourism. The duration of travel does not appear to be a risk factor. It should be noted that "at-risk activities" have not been addressed in these studies. Detailed rabies distribution maps and information on the availability of rabies biologics are urgently needed in order to identify those travelers who need pre-travel vaccination. Meanwhile, cost-minimization of rabies pre-exposure vaccination may be achieved in several ways, notably by using the intra-dermal method of vaccination.

  17. Travel Health Advice Provided by In-flight Magazines of International Airlines in Australia.

    Science.gov (United States)

    Leggat

    1997-06-01

    More than 3 million Australians travel overseas each year, and the most popular destination for these Australian travelers is Asia. Many of the countries in the Asian region are developing, and travelers to such countries may encounter tropical illness or serious injury, particularly diarrheal disease and motor vehicle accidents.1 The latter is the most common preventable cause of death in travelers.2 These problems are in addition to some of the potential problems associated with international flights, such as swelling feet, dehydration, jet lag, and venous thrombosis. There are a number of media through which travelers could receive travel health advice. However, a study of travel agent brochures by Reid et al.3 indicated that about one-third of these carried no travel health advice, with most of those that did carry travel advice providing only general information. Airline magazines also represent a possible source of in-flight and destination-specific travel health advice to which most travelers would have access.

  18. Beyond "medical tourism": Canadian companies marketing medical travel

    Directory of Open Access Journals (Sweden)

    Turner Leigh

    2012-06-01

    Full Text Available Abstract Background Despite having access to medically necessary care available through publicly funded provincial health care systems, some Canadians travel for treatment provided at international medical facilities as well as for-profit clinics found in several Canadian provinces. Canadians travel abroad for orthopaedic surgery, bariatric surgery, ophthalmologic surgery, stem cell injections, “Liberation therapy” for multiple sclerosis, and additional interventions. Both responding to public interest in medical travel and playing an important part in promoting the notion of a global marketplace for health services, many Canadian companies market medical travel. Methods Research began with the goal of locating all medical tourism companies based in Canada. Various strategies were used to find such businesses. During the search process it became apparent that many Canadian business promoting medical travel are not medical tourism companies. To the contrary, numerous types of businesses promote medical travel. Once businesses promoting medical travel were identified, content analysis was used to extract information from company websites. Company websites were analyzed to establish: 1 where in Canada these businesses are located; 2 the destination countries and health care facilities that they market; 3 the medical procedures they promote; 4 core marketing messages; and 5 whether businesses market air travel, hotel accommodations, and holiday tours in addition to medical procedures. Results Searches conducted from 2006 to 2011 resulted in identification of thirty-five Canadian businesses currently marketing various kinds of medical travel. The research project began with what seemed to be the straightforward goal of establishing how many medical tourism companies are based in Canada. Refinement of categories resulted in the identification of eighteen businesses fitting the category of what most researchers would identify as medical tourism

  19. Beyond "medical tourism": Canadian companies marketing medical travel.

    Science.gov (United States)

    Turner, Leigh

    2012-06-15

    Despite having access to medically necessary care available through publicly funded provincial health care systems, some Canadians travel for treatment provided at international medical facilities as well as for-profit clinics found in several Canadian provinces. Canadians travel abroad for orthopaedic surgery, bariatric surgery, ophthalmologic surgery, stem cell injections, "Liberation therapy" for multiple sclerosis, and additional interventions. Both responding to public interest in medical travel and playing an important part in promoting the notion of a global marketplace for health services, many Canadian companies market medical travel. Research began with the goal of locating all medical tourism companies based in Canada. Various strategies were used to find such businesses. During the search process it became apparent that many Canadian business promoting medical travel are not medical tourism companies. To the contrary, numerous types of businesses promote medical travel. Once businesses promoting medical travel were identified, content analysis was used to extract information from company websites. Company websites were analyzed to establish: 1) where in Canada these businesses are located; 2) the destination countries and health care facilities that they market; 3) the medical procedures they promote; 4) core marketing messages; and 5) whether businesses market air travel, hotel accommodations, and holiday tours in addition to medical procedures. Searches conducted from 2006 to 2011 resulted in identification of thirty-five Canadian businesses currently marketing various kinds of medical travel. The research project began with what seemed to be the straightforward goal of establishing how many medical tourism companies are based in Canada. Refinement of categories resulted in the identification of eighteen businesses fitting the category of what most researchers would identify as medical tourism companies. Seven other businesses market regional, cross

  20. Beyond "medical tourism": Canadian companies marketing medical travel

    Science.gov (United States)

    2012-01-01

    Background Despite having access to medically necessary care available through publicly funded provincial health care systems, some Canadians travel for treatment provided at international medical facilities as well as for-profit clinics found in several Canadian provinces. Canadians travel abroad for orthopaedic surgery, bariatric surgery, ophthalmologic surgery, stem cell injections, “Liberation therapy” for multiple sclerosis, and additional interventions. Both responding to public interest in medical travel and playing an important part in promoting the notion of a global marketplace for health services, many Canadian companies market medical travel. Methods Research began with the goal of locating all medical tourism companies based in Canada. Various strategies were used to find such businesses. During the search process it became apparent that many Canadian business promoting medical travel are not medical tourism companies. To the contrary, numerous types of businesses promote medical travel. Once businesses promoting medical travel were identified, content analysis was used to extract information from company websites. Company websites were analyzed to establish: 1) where in Canada these businesses are located; 2) the destination countries and health care facilities that they market; 3) the medical procedures they promote; 4) core marketing messages; and 5) whether businesses market air travel, hotel accommodations, and holiday tours in addition to medical procedures. Results Searches conducted from 2006 to 2011 resulted in identification of thirty-five Canadian businesses currently marketing various kinds of medical travel. The research project began with what seemed to be the straightforward goal of establishing how many medical tourism companies are based in Canada. Refinement of categories resulted in the identification of eighteen businesses fitting the category of what most researchers would identify as medical tourism companies. Seven other

  1. Collective Travel Planning in Spatial Networks

    KAUST Repository

    Shang, Shuo

    2015-12-17

    Travel planning and recommendation are important aspects of transportation.We propose and investigate a novel Collective Travel Planning (CTP) query that finds the lowest-cost route connecting multiple sources and a destination, via at most k meeting points. When multiple travelers target the same destination (e.g., a stadium or a theater), they may want to assemble at meeting points and then go together to the destination by public transport to reduce their global travel cost (e.g., energy, money, or greenhouse-gas emissions). This type of functionality holds the potential to bring significant benefits to society and the environment, such as reducing energy consumption and greenhouse-gas emissions, enabling smarter and greener transportation, and reducing traffic congestions. The CTP query is Max SNP-hard. To compute the query efficiently, we develop two algorithms, including an exact algorithm and an approximation algorithm. The exact algorithm is capable finding the optimal result for small values of k (e.g., k = 2) in interactive time, while the approximation algorithm, which has a 5-approximation ratio, is suitable for other situations. The performance of the CTP query is studied experimentally with real and synthetic spatial data.

  2. Travel Mode Detection Exploiting Cellular Network Data

    Directory of Open Access Journals (Sweden)

    Kalatian Arash

    2016-01-01

    Full Text Available There has been growing interest in exploiting cellular network data for transportation planning purposes in recent years. In this paper, we utilize these data for determining mode of travel in the city of Shiraz, Iran. Cellular data records -including location updates in 5minute time intervals- of 300,000 users from the city of Shiraz has been collected for 40 hours in three consecutive days in a cooperation with the major telecommunications service provider of the country. Depending on the density of mobile BTS’s in different zones of the city, the user location can be located within an average of 200 meters. Considering data filtering and smoothing, data preparation and converting them to comprehensible traces is a large portion of the work. A novel approach to identify stay locations is proposed and implemented in this paper. Origin-Destination matrices are then created based on trips detected, which shows acceptable consistency with current O-D matrices. Finally, Travel times for all trips of a user is estimated as the main attribute for clustering. Trips between same origin and destination zones are combined together in a group. Using K-means algorithm, records within each group are the portioned in two or three clusters, based on their travel speeds. Each cluster represents a certain mode of travel; walking, public transportation or driving a private car.

  3. Design and fabrication of a large vertical travel silicon inchworm microactuator for advanced segmented silicon space telescope (ASSIST)

    Science.gov (United States)

    Yang, E.; Dekany, R.; Padin, S.

    2003-01-01

    The goal of this research is to develop inchworm motor systems capable of simultaneously providing nanometer resolution, high stiffness, large output force, long travel range, and compactness for ultraprecision positioning applications in space.

  4. Smart Travel Based on Space-Time Behavior Study

    Institute of Scientific and Technical Information of China (English)

    Chai; Yanwei; Shen; Yue; Ta; Na; Qian; Fang

    2015-01-01

    In view of the significant demands and development trends of urbanization during the 12 th Five-Year Plan period, "smart city" has attracted wide attention as an advanced city development concept in China. Under the circumstance of rapid urbanization, traffic congestion and accessibility defi ciency become major challenges to many Chinese cities, as transportation and travel are closely related to the effi ciency of a city’s operation and the quality of people’s life. As essential part of smart city planning and management, smart travel offers an effective behavior planning countermeasure to reduce the amount of urban traffi c and optimize the space-time distribution of travels and provides an effective technology to enrich the theories and methodologies of urban and transportation planning. Orienting at the practical demand of citizens and focusing on their travel behavior, this paper carries out a discussion on the smart travel framework based on space-time behavior study and analyzes smart travel planning and its policy route from multiple perspectives, including a prediction on travel demand, transportation planning, public policy-making, and urban planning. What’s more, the paper suggests travel services for citizens based on space-time behavior analysis, such as providing personalized information, smart decision-making support, and individual behavior planning.

  5. Systematic experimental based modeling of a rotary piezoelectric ultrasonic motor

    DEFF Research Database (Denmark)

    Mojallali, Hamed; Amini, Rouzbeh; Izadi-Zamanabadi, Roozbeh

    2007-01-01

    In this paper, a new method for equivalent circuit modeling of a traveling wave ultrasonic motor is presented. The free stator of the motor is modeled by an equivalent circuit containing complex circuit elements. A systematic approach for identifying the elements of the equivalent circuit...

  6. 41 CFR 109-38.5105 - Motor vehicle local use objectives.

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 3 2010-07-01 2010-07-01 false Motor vehicle local use..., TRANSPORTATION, AND MOTOR VEHICLES 38-MOTOR EQUIPMENT MANAGEMENT 38.51-Utilization of Motor Equipment § 109-38.5105 Motor vehicle local use objectives. (a) Individual motor vehicle utilization cannot always...

  7. Fellow travellers: Working memory and mental time travel in rodents.

    Science.gov (United States)

    Dere, Ekrem; Dere, Dorothea; de Souza Silva, Maria Angelica; Huston, Joseph P; Zlomuzica, Armin

    2017-03-19

    The impairment of mental time travel is a severe cognitive symptom in patients with brain lesions and a number of neuropsychiatric disorders. Whether animals are also able to mentally travel in time both forward and backward is still a matter of debate. In this regard, we have proposed a continuum of mental time travel abilities across different animal species, with humans being the species with the ability to perform most sophisticated forms of mental time travel. In this review and perspective article, we delineate a novel approach to understand the evolution, characteristics and function of human and animal mental time travel. Furthermore, we propose a novel approach to measure mental time travel in rodents in a comprehensive manner using a test battery composed of well-validated and easy applicable tests. Copyright © 2017. Published by Elsevier B.V.

  8. 41 CFR 301-71.306 - Are there exceptions to collecting an advance at the time the employee files a travel claim?

    Science.gov (United States)

    2010-07-01

    ... collecting an advance at the time the employee files a travel claim? 301-71.306 Section 301-71.306 Public Contracts and Property Management Federal Travel Regulation System TEMPORARY DUTY (TDY) TRAVEL ALLOWANCES...-71.306 Are there exceptions to collecting an advance at the time the employee files a travel claim...

  9. 41 CFR 301-71.2 - What are the standard data elements and when must they be captured on a travel accounting system?

    Science.gov (United States)

    2010-07-01

    ... data elements and when must they be captured on a travel accounting system? 301-71.2 Section 301-71.2 Public Contracts and Property Management Federal Travel Regulation System TEMPORARY DUTY (TDY) TRAVEL... the standard data elements and when must they be captured on a travel accounting system? The...

  10. Travel Demand Modeling

    Energy Technology Data Exchange (ETDEWEB)

    Southworth, Frank [ORNL; Garrow, Dr. Laurie [Georgia Institute of Technology

    2011-01-01

    This chapter describes the principal types of both passenger and freight demand models in use today, providing a brief history of model development supported by references to a number of popular texts on the subject, and directing the reader to papers covering some of the more recent technical developments in the area. Over the past half century a variety of methods have been used to estimate and forecast travel demands, drawing concepts from economic/utility maximization theory, transportation system optimization and spatial interaction theory, using and often combining solution techniques as varied as Box-Jenkins methods, non-linear multivariate regression, non-linear mathematical programming, and agent-based microsimulation.

  11. Time, travel and infection.

    Science.gov (United States)

    Cliff, Andrew; Haggett, Peter

    2004-01-01

    The collapse of geographical space over the last 200 years has had profound effects on the circulation of human populations and on the transfer of infectious diseases. Three examples are used to illustrate the process: (a) the impact of the switch from sail to steamships in importing measles into Fiji over a 40-year period; (b) changes in measles epidemic behaviour in Iceland over a 150-year period; and (c) changes in the spread of cholera within the United States over a 35-year period. In each case, the link between time, travel and disease has been an intimate one.

  12. The SUN S TRAVELS

    Institute of Scientific and Technical Information of China (English)

    Robert; Louis; Stevenson

    2005-01-01

    The sun is not a-bed, when I At night upon my pillow lie; Stilt round the earth his Way he takes, And morning after morning makes. White here at home, in shining day, We round the sunny garden play, Each tittle Indian sleepy - head Is being kissed and put to bed. And When at eve I rise from tea, Day dawns beyond the Atlantic Sea; And all the children in the West Are getting up and being dressed.The SUN'S TRAVELS@Robert Louis Stevenson

  13. Health hazards of international travel.

    Science.gov (United States)

    Cossar, J H; Reid, D

    1989-01-01

    The growth of travel and the increasing numbers of those affected by travel-related illnesses, some of a serious nature, will cause this subject to demand the attention of the medical profession, the travel trade, travellers themselves and the health authorities of countries receiving tourists. Provision of appropriate advice for the traveller is a shared responsibility, best channelled mainly through travel agencies; it can moreover be shown to be cost-beneficial. Continued monitoring of illness in travellers and provision of information systems geared to this problem and its prevention are fully justified. They should be based on traditional channels of communication and currently-available modern technology, and be readily accessible to medical and related workers. Increased collaboration between medical workers, health educators and those involved in the travel trade would be a positive and useful contribution towards the reduction of illness and discomfort among travellers and the associated expense incurred by the various national health services concerned. There are clearly economic benefits from the development of international tourism, but these have to be balanced in countries accepting tourists by attention to the prevention of illnesses associated with travel.

  14. Gasoline Prices and Motor Vehicle Fatalities

    Science.gov (United States)

    Grabowski, David C.; Morrisey, Michael A.

    2004-01-01

    Fatal motor vehicle crashes per capita remained relatively stable over the 1990s, in spite of new traffic safety laws and vehicle innovations. One explanation for this stability is that the price of gasoline declined, which resulted in more vehicle miles traveled and potentially more fatalities. By using 1983-2000 monthly gasoline price and…

  15. Patterns of measles transmission among airplane travelers.

    Science.gov (United States)

    Edelson, Paul J

    2012-09-01

    With advanced air handling systems on modern aircraft and the high level of measles immunity in many countries, measles infection in air travelers may be considered a low-risk event. However, introduction of measles into countries where transmission has been controlled or eliminated can have substantial consequences both for the use of public health resources and for those still susceptible. In an effort to balance the relatively low likelihood of disease transmission among largely immune travelers and the risk to the public health of the occurrence of secondary cases resulting from importations, criteria in the United States for contact investigations for measles exposures consider contacts to be those passengers who are seated within 2 rows of the index case. However, recent work has shown that cabin air flow may not be as reliable a barrier to the spread of measles virus as previously believed. Along with these new studies, several reports have described measles developing after travel in passengers seated some distance from the index case. To understand better the potential for measles virus to spread on an airplane, reports of apparent secondary cases occurring in co-travelers of passengers with infectious cases of measles were reviewed. Medline™ was searched for articles in all languages from 1946 to week 1 of March 2012, using the search terms "measles [human] or rubeola" and ("aircraft" or "airplane" or "aeroplane" or "aviation" or "travel" or "traveler" or "traveller"); 45 citations were returned. Embase™ was searched from 1988 to week 11 2012, using the same search strategy; 95 citations were returned. Papers were included in this review if they reported secondary cases of measles occurring in persons traveling on an airplane on which a person or persons with measles also flew, and which included the seating location of both the index case(s) and the secondary case(s) on the plane. Nine reports, including 13 index cases and 23 apparent secondary cases

  16. Traveling-Wave Tubes

    Science.gov (United States)

    Kory, Carol L.

    1998-01-01

    The traveling-wave tube (TWT) is a vacuum device invented in the early 1940's used for amplification at microwave frequencies. Amplification is attained by surrendering kinetic energy from an electron beam to a radio frequency (RF) electromagnetic wave. The demand for vacuum devices has been decreased largely by the advent of solid-state devices. However, although solid state devices have replaced vacuum devices in many areas, there are still many applications such as radar, electronic countermeasures and satellite communications, that require operating characteristics such as high power (Watts to Megawatts), high frequency (below 1 GHz to over 100 GHz) and large bandwidth that only vacuum devices can provide. Vacuum devices are also deemed irreplaceable in the music industry where musicians treasure their tube-based amplifiers claiming that the solid-state and digital counterparts could never provide the same "warmth" (3). The term traveling-wave tube includes both fast-wave and slow-wave devices. This article will concentrate on slow-wave devices as the vast majority of TWTs in operation fall into this category.

  17. Time travel a history

    CERN Document Server

    Gleick, James

    2016-01-01

    From the acclaimed author of The Information and Chaos, here is a mind-bending exploration of time travel: its subversive origins, its evolution in literature and science, and its influence on our understanding of time itself. The story begins at the turn of the previous century, with the young H. G. Wells writing and rewriting the fantastic tale that became his first book and an international sensation: The Time Machine. It was an era when a host of forces was converging to transmute the human understanding of time, some philosophical and some technological: the electric telegraph, the steam railroad, the discovery of buried civilizations, and the perfection of clocks. James Gleick tracks the evolution of time travel as an idea that becomes part of contemporary culture—from Marcel Proust to Doctor Who, from Jorge Luis Borges to Woody Allen. He investigates the inevitable looping paradoxes and examines the porous boundary between pulp fiction and modern physics. Finally, he delves into a temporal shift that...

  18. Ion Acoustic Travelling Waves

    CERN Document Server

    Webb, G M; Ao, X; Zank, G P

    2013-01-01

    Models for travelling waves in multi-fluid plasmas give essential insight into fully nonlinear wave structures in plasmas, not readily available from either numerical simulations or from weakly nonlinear wave theories. We illustrate these ideas using one of the simplest models of an electron-proton multi-fluid plasma for the case where there is no magnetic field or a constant normal magnetic field present. We show that the travelling waves can be reduced to a single first order differential equation governing the dynamics. We also show that the equations admit a multi-symplectic Hamiltonian formulation in which both the space and time variables can act as the evolution variable. An integral equation useful for calculating adiabatic, electrostatic solitary wave signatures for multi-fluid plasmas with arbitrary mass ratios is presented. The integral equation arises naturally from a fluid dynamics approach for a two fluid plasma, with a given mass ratio of the two species (e.g. the plasma could be an electron pr...

  19. Cyclists' attitudes toward policies encouraging bicycle travel: findings from the Taupo Bicycle Study in New Zealand.

    Science.gov (United States)

    Tin Tin, Sandar; Woodward, Alistair; Thornley, Simon; Langley, John; Rodgers, Anthony; Ameratunga, Shanthi

    2010-03-01

    Utility cycling provides substantial health, environmental and economic benefits. Despite a favourable trend in leisure-time cycling, cycling is infrequently used for everyday travel needs in New Zealand. This study investigated cyclists' attitudes toward environmental and policy measures that would encourage them to cycle more, particularly for a trip to work. A cross-sectional analysis was undertaken using baseline data obtained from the Taupo Bicycle Study, a web-based longitudinal study. The study population comprised 2469 cyclists, aged 16 years or over, who had enrolled in the 2006 Wattyl Lake Taupo Cycle Challenge. The majority (88%) reported the provision of bicycle lanes as an important factor that would encourage them to cycle more often, followed by bicycle paths (76%), better bicycle security (64%), reduced motor vehicle speed (55%) and bike friendly public transport (38%). Of those who reported travelling to work at least once a week (N = 2223), varying proportions reported shower facilities at work (61%), fewer difficult intersections (43%), rising fuel costs (41%), fewer car parks (27%), bike designed to commute (26%) and rising cost of car parking (25%) as important factors that would encourage them to cycle to work more often. There were important differences in these perceived influences defined by the participants' socio-demographic characteristics and current cycling habits.

  20. CONCEPTUAL CLARIFICATIONS REGARDING YOUTH TRAVEL

    OpenAIRE

    Lect. Ph.D Student Moisa Claudia Olimpia

    2010-01-01

    Currently, there is no clear definition for the youth travel concept. This concept emerged much latter than the first forms of manifestation of tourism for young people, namely the beginning of the ’90s when the first studies regarding youth travel were also conducted. No doubt, the concept of youth travel ensues from three notions, namely: youth, tourism and vacation – in the sense of free time. All the definitions used by tourism organizations, by various national tourism administrations an...

  1. Motor homopolar

    OpenAIRE

    Agustín Martín Muñoz

    2007-01-01

    Mostramos la construcción de un modelo de motor homopolar, uno de los más antiguos tipos de motores eléctricos. Se caracterizan porque el campo magnético del imán mantiene siempre la misma polaridad (de ahí su nombre, del griego homos, igual), de modo que, cuando una corriente eléctrica atraviesa el campo magnético, aparece una fuerza que hace girar los elementos no fijados mecánicamente. En el sencillísimo motor homopolar colgado (Schlichting y Ucke 2004), el imán puede girar ...

  2. Minimization of Load Oscillations in Travelling Mechanisms of Cranes

    Directory of Open Access Journals (Sweden)

    Kamal Khandakji

    2005-01-01

    Full Text Available The paper presents an analysis of suspended load (cargo oscillations in traveling mechanisms of cranes. A special control algorithm has been developed in order to get minimum cargo oscillations in minimum transient time. Mathematical model simulating the effect of the suggested control algorithm on cargo oscillations has been developed. Two power electronic circuits applicable for AC drives with three-phase induction motors are suggested to obtain the required motion algorithm.

  3. Trafficati: esperienze di viaggio - Trafficked: travelling experiences

    Directory of Open Access Journals (Sweden)

    Desirée Pangerc

    2011-09-01

    Full Text Available Are trafficked also travellers? The article analyses the traveller as merchandise: migrants, clandestine and trafficked are some of the roles sometimes unwittingly performed by the social actors. During a trip a migrant can therefore become trafficked, i.e. the social actor goes through a continuous transformation of the self: every single transformation has its name. The activity of giving names is a juridical process which involves many international institutions. The example made in this article concerns the Balkan area and central-oriental Europe. The migratory routes will be examined as well as the paths which constitute them. A labyrinth which changes continuously: the paths are modified; they disappear only to re-appear later. The testimony of the trafficked is here gathered and analyzed on the basis of the documents gathered on the field or produced by the public prosecutor’s office in Trieste.

  4. Travel opinion leaders and seekers

    DEFF Research Database (Denmark)

    Yoo, Kyung-Hyan; Gretzel, Ulrike; Zach, Florian

    2011-01-01

    While opinion leadership has been recognized as important in tourism, there has been very little empirical research investigating the phenomenon. Given new developments in social media technologies, it is especially important to understand whether travel opinion leadership and seeking are drivers...... media use. The findings suggest that travel opinion leadership and seeking are distinct but connected. Both opinion leaders and seekers are technology savvy, young, educated, involved in travel planning and engaged in social media use for travel. What distinguishes opinion leaders is their greater...

  5. Communication from Carlson Wagonlit Travel

    CERN Multimedia

    2008-01-01

    Entry requirements for the USA: "ESTA" (Electronic System for Travel Authorization) online registration The requirement to register before entering the USA announced by the Department of Homeland Security (DHS) is to be introduced on 12 January 2009. Visitors to the USA will then be required to register their personal data and travel data online not less than 72 hours prior to travel. https://esta.cbp.dhs.gov/ General information on entry requirements for the USA are also available on the Carlson Wagonlit Travel website under the heading „CWT informs": http://www.carlsonwagonlit.ch

  6. Communication from Carlson Wagonlit Travel

    CERN Multimedia

    2009-01-01

    Entry requirements for the USA: "ESTA" (Electronic System for Travel Authorization) online registration The requirement to register before entering the USA announced by the Department of Homeland Security (DHS) is to be introduced on 12 January 2009. Visitors to the USA will then be required to register their personal data and travel data online not less than 72 hours prior to travel. https://esta.cbp.dhs.gov/ General information on entry requirements for the USA is also available on the Carlson Wagonlit Travel website under the heading „CWT informs": http://www.carlsonwagonlit.ch

  7. 36 CFR 261.13 - Motor vehicle use.

    Science.gov (United States)

    2010-07-01

    ... 36 Parks, Forests, and Public Property 2 2010-07-01 2010-07-01 false Motor vehicle use. 261.13... General Prohibitions § 261.13 Motor vehicle use. After National Forest System roads, National Forest... have been identified on a motor vehicle use map, it is prohibited to possess or operate a motor...

  8. 36 CFR 1004.4 - Report of motor vehicle accident.

    Science.gov (United States)

    2010-07-01

    ... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false Report of motor vehicle... SAFETY § 1004.4 Report of motor vehicle accident. (a) The operator of a motor vehicle involved in an... by this section do not relieve the operator and occupants of a motor vehicle involved in an...

  9. Travel and migration associated infectious diseases morbidity in Europe, 2008

    Directory of Open Access Journals (Sweden)

    Lopez-Velez Rogelio

    2010-11-01

    Full Text Available Abstract Background Europeans represent the majority of international travellers and clinicians encountering returned patients have an essential role in recognizing, and communicating travel-associated public health risks. Methods To investigate the morbidity of travel associated infectious diseases in European travellers, we analysed diagnoses with demographic, clinical and travel-related predictors of disease, in 6957 ill returned travellers who presented in 2008 to EuroTravNet centres with a presumed travel associated condition. Results Gastro-intestinal (GI diseases accounted for 33% of illnesses, followed by febrile systemic illnesses (20%, dermatological conditions (12% and respiratory illnesses (8%. There were 3 deaths recorded; a sepsis caused by Escherichia coli pyelonephritis, a dengue shock syndrome and a Plasmodium falciparum malaria. GI conditions included bacterial acute diarrhea (6.9%, as well as giardiasis and amebasis (2.3%. Among febrile systemic illnesses with identified pathogens, malaria (5.4% accounted for most cases followed by dengue (1.9% and others including chikungunya, rickettsial diseases, leptospirosis, brucellosis, Epstein Barr virus infections, tick-borne encephalitis (TBE and viral hepatitis. Dermatological conditions were dominated by bacterial infections, arthropod bites, cutaneous larva migrans and animal bites requiring rabies post-exposure prophylaxis and also leishmaniasis, myasis, tungiasis and one case of leprosy. Respiratory illness included 112 cases of tuberculosis including cases of multi-drug resistant or extensively drug resistant tuberculosis, 104 cases of influenza like illness, and 5 cases of Legionnaires disease. Sexually transmitted infections (STI accounted for 0.6% of total diagnoses and included HIV infection and syphilis. A total of 165 cases of potentially vaccine preventable diseases were reported. Purpose of travel and destination specific risk factors was identified for several

  10. Hybrid Modelling of a Traveling Wave Piezoelectric Motor

    DEFF Research Database (Denmark)

    El, Ghouti N.

    torque at low speed, quiet operation (ultrasonic), simple structure, compactness in size and no electromagnetic interferences. However, the mathematical model of the PEM is complex and difficult to derive due to its driving principle based on high-frequency mechanical vibrations and frictional force...... the performance characteristics of the PEM under various working conditions. The main objective of this PhD project is to derive a suitable model for investigating some nonlinear control strategies in a simulated environment. Most of the existing modeling approaches are inappropriate for the control community due......) and finally the basic laws of dynamics. In order to overcome some of the drawbacks of the existing methods, and thereby meet the needs of the control community, three main approaches are considered in this modeling task. First, the equivalent circuit method is investigated in order to derive a lumped model...

  11. The problem of space travel: The rocket motor

    Science.gov (United States)

    Noordung, Hermann; Stuhlinger, Ernst (Editor); Hunley, J. D. (Editor); Garland, Jennifer (Editor)

    1995-01-01

    This is an English translation of Noordung's 'Das Problem der Befahrung des Weltraums'. It is a part of the NASA History Series. The book provides Noordung's insight as to how a space station might be constructed. Keep in mind that the author passed away in 1929. It contains ideas that were criticized for faults and those that were acclaimed for their potentially successful ingenuity.

  12. The problem of space travel: The rocket motor

    Science.gov (United States)

    Noordung, Hermann; Stuhlinger, Ernst; Hunley, J. D.; Garland, Jennifer

    This is an English translation of Noordung's 'Das Problem der Befahrung des Weltraums'. It is a part of the NASA History Series. The book provides Noordung's insight as to how a space station might be constructed. Keep in mind that the author passed away in 1929. It contains ideas that were criticized for faults and those that were acclaimed for their potentially successful ingenuity.

  13. What are the health and greenhouse gas implications of travel patterns in different European settings?

    DEFF Research Database (Denmark)

    Woodcock, J.; Götschi, T.; Nielsen, Thomas Alexander Sick;

    population in England and Wales outside London) had the same travel patterns as people in other more active European locations. These comparator locations were the Netherlands and Denmark (noted for their high cycling), Switzerland (high walking and public transport use) and London (much higher public...... transport and low car use than in the rest of the UK). Travel patterns by age group and gender were estimated using national travel surveys and the London travel demand survey. The analysis was differentiated by gender and age. Health (physical activity, air pollution and road traffic injuries...

  14. Ultrasonic Motors

    Science.gov (United States)

    2003-06-01

    and T. Higuchi, "Cylindrical Micro Ultrasonic Motor Utilizing Bulk Lead Zirconate Titanate (PZT)," Japanese Journal of Applied Physics Part 1-Regular Papers Short Notes & Review Papers, vol. 38, pp. 3347-3350, 1999.

  15. 41 CFR 301-10.220 - What requirements must I meet to operate a Government automobile for official travel?

    Science.gov (United States)

    2010-07-01

    ... meet to operate a Government automobile for official travel? 301-10.220 Section 301-10.220 Public... ALLOWABLE TRAVEL EXPENSES 10-TRANSPORTATION EXPENSES Government Vehicle Government Automobiles § 301-10.220 What requirements must I meet to operate a Government automobile for official travel? You must...

  16. Differences in adolescents' physical activity from school-travel between urban and suburban neighbourhoods in Metro Vancouver, Canada

    Directory of Open Access Journals (Sweden)

    Amanda Frazer

    2015-01-01

    Conclusion: Urban dwelling may facilitate greater school-travel MVPA in adolescents. School-travel MVPA is an important contributor to adolescents' school-day MVPA. Where feasible, physically active options for school-travel should be promoted, including public transit.

  17. 75 FR 5553 - Federal Motor Vehicle Safety Standards; Motor Vehicle Brake Fluids

    Science.gov (United States)

    2010-02-03

    ... Federal Motor Vehicle Safety Standards; Motor Vehicle Brake Fluids AGENCY: National Highway Traffic Safety... NPRM proposes to amend FMVSS No. 116, Motor Vehicle Brake Fluids, so that brake fluids would be tested... Date VII. Rulemaking Analyses and Notices VIII. Public Participation I. Background Federal...

  18. Solar wind travel time

    Science.gov (United States)

    Russell, C. T.

    A useful rule of thumb in solar terrestrial studies is that the solar wind travels 4 Earth radii (RE) per minute. Long-term studies of solar wind velocity [e.g., Luhmann et al., 1993; 1994] show that the median velocity is about 420 km/s, corresponding to 3.96 RE min-1. The quartiles are about 370 km/s and 495 km/s, corresponding to 3.48 Re min-1 and 4.66 Re min-1 respectively. This number helps estimate the delays expected when observing a discontinuity at a solar wind monitor; one example is ISEE-3 when it was at the forward libration point (about 60 min). It is also helpful for estimating how much time passes before the dayside magnetosphere is compressed as denser solar wind flows by (about 2.5 min).

  19. SUNSCEEN FOR TRAVELLERS

    Directory of Open Access Journals (Sweden)

    Novita Lavi N

    2013-05-01

    Full Text Available The sun exposure brings negative effects on the skin such like early aging, spots and skin cancer as the most terrible effect. To reduce the adverse effects of the sun, it is not enough just to behavioral therapy, but also had no protection from the outside. Especially for travellers that exposed by the sun excessively. There is sunscreen, product specially formulated to absorb or deflect ultraviolet rays. A sunscreen preparation contains chemical compounds that can absorb, scatter or reflect sunlight on the skin. This writing contains about effect of ultraviolet, skin protection from ultraviolet from behavioral aspect, variaty and contents of sunscreen and sunscreen application for travellers. Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

  20. 75 FR 63811 - The U.S. Travel & Tourism Advisory Board: Information-Gathering Session of the U.S. Travel and...

    Science.gov (United States)

    2010-10-18

    ... International Trade Administration The U.S. Travel & Tourism Advisory Board: Information-Gathering Session of the U.S. Travel and Tourism Advisory Board AGENCY: International Trade Administration, U.S. Department... Tourism Advisory Board (``Board'') will convene a public information-gathering session in Las Vegas, where...

  1. International Travelers' Sociodemographic, Health, and Travel Characteristics: An Italian Study.

    Science.gov (United States)

    Troiano, Gianmarco; Mercone, Astrid; Bagnoli, Alessandra; Nante, Nicola

    Approximately the 8% of travelers requires medical care, with the diagnosis of a vaccine-preventable disease. The aim of our study was to analyze the socio-demographic, health and travel characteristics of the Italian international travelers. We conducted a cross sectional study from January 2015 to June 2016, at the Travel Medicine Clinic of Siena, asking the doctor to interview patients who attended the Clinic, recording socio-demographic and travel information, malaria prophylaxis, vaccinations. The data were organized in a database and processed by software Stata®. We collected 419 questionnaires. Patients chose 71 countries for their travels; the favorite destinations were: India (6.31%), Thailand (6.31%), and Brazil (5.10%). The mean length of stay was 36.17 days. Italians, students, and freelancers tended to stay abroad for a longer time (mean: 36.4 days, 59.87 days and 64.16 days respectively). 33.17% of our sample used drugs for malaria chemoprophylaxis: 71.9% of them used Atovaquone/Proguanil (Malarone®), 26.6% used Mefloquine (Lariam®), 1.5% other drugs. The vaccinations that travelers mostly got in our study were to prevent hepatitis A (n = 264), the typhoid fever (n = 187), the Tetanus + Diphtheria + Pertussis (n = 165), the Yellow fever (n = 118) and the cholera (n = 78). Twenty-eight (6.68%) refused some recommended vaccinations. The vaccines mostly refused were for Typhoid fever (n = 20), hepatitis a (n = 9), and cholera (n = 9). Our results demonstrated that Italian international travelers are at-risk because of their poor vaccinations adherence. This implies that pre-travel counseling is fundamental to increase the knowledge of the risks and the compliance of future travelers. Copyright © 2016 Icahn School of Medicine at Mount Sinai. Published by Elsevier Inc. All rights reserved.

  2. 41 CFR 101-25.402 - Motor vehicles.

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 2 2010-07-01 2010-07-01 true Motor vehicles. 101-25.402 Section 101-25.402 Public Contracts and Property Management Federal Property Management... Standards § 101-25.402 Motor vehicles. Replacement of motor vehicles shall be in accordance with...

  3. Incidence, risk factors and treatment of diarrhoea among Dutch travellers: reasons not to routinely prescribe antibiotics

    Directory of Open Access Journals (Sweden)

    Belderok Sanne-Meike

    2011-10-01

    Full Text Available Abstract Background Travellers' diarrhoea (TD is the most common infectious disease among travellers. In the Netherlands, stand-by or prophylactic antibiotics are not routinely prescribed to travellers. This study prospectively assessed the incidence rate, risk factors, and treatment of TD among immunocompetent travellers. Methods Persons who attended the travel clinic of the Public Health Service Amsterdam in 2006-2007 before short-term travel to tropical and subtropical countries were invited to answer a questionnaire regarding sociodemographics and travel purpose; they were also asked to keep a daily structured travel diary, recording their itinerary, symptoms, and self-medication or consultation with a doctor. Diarrhoea episodes containing blood or mucous were considered severe. Results Of 1202 travellers, the median age was 38 years, and the median travel duration 3 weeks. Of all episodes, 96% were mild. The median duration of TD was 2 days and significantly shorter in subsequent episodes compared to first episodes (p Conclusions TD is common among travellers, but the overall course is mild, not requiring treatment. The incidence rates for first and second episodes are comparable. Female sex is a risk factor for the first episode, as well as subsequent ones. Prescription antibiotics are not needed in short-term healthy travellers.

  4. 卫星城居民出行特征及出行方式选择模型研究%Residents′Travel Characteristics and Model of Travel Mode Choice for Satellite City

    Institute of Scientific and Technical Information of China (English)

    谢秋婷; 温旭丽

    2015-01-01

    Study on residents′travel characteristics and travel mode choice behaviors is the basis and premise to solve traffic problems of satellite city. Taking Pukou district of Nanjing as an example, the res⁃idents′travel OD survey data was processed and excavated by Access. The residents′travel characteris⁃tics status was summarized from aspects of travel frequency, travel purpose, travel mode, travel time and its distribution. The major factors influencing the travel mode choice of satellite city residents were exca⁃vated and quantified. By data mining, the multinomial travel choice Logit model was established. It was fitted and calibrated through SPSS. Taking the public transport as an example, the major factors influenc⁃ing the choice of bus travel which were gender, age and whether having bus IC card were conducted. The fitting accuracy was tested using the calculation and predicted value. The result shows that the errors of predicted values are acceptable except for non-motorized vehicle.%卫星城居民出行特征及出行方式选择研究是解决卫星城交通问题的基础和前提。以南宁市浦口区为例,通过Access数据库对居民出行OD调查数据进行处理挖掘,从居民的出行频次、出行目的、出行方式、出行时耗及出行时间分布五方面对卫星城居民出行特征进行研究,总结出浦口区居民出行特征现状;挖掘并量化影响卫星城居民出行方式选择的关键因素,利用浦口区居民出行调查数据,构建居民出行方式选择多项Logit模型,通过SPSS软件进行模型拟合和标定。在模型拟合结果中,以公交车为例进行拟合结果分析,可得到影响选择公交出行的主要因素——性别、年龄以及有无公交IC卡,并通过计算以及模型预测值对模型拟合精度进行校验。结果显示,除非机动车预测效果较差以外,其余预测误差均在可接受范围内。

  5. Carlson Wagonlit Travel is moving

    CERN Multimedia

    2013-01-01

    The renovation of the Main Building continues!   Because of this, Carlson Wagonlit Travel will move from building 62 to building 510 on 4 October and the agency will be closed in the afternoon. An emergency service will be organised for official travels only. Phone: 022 799 75 73 & 022 799 75 78 / e-mail: cern@carlsonwagonlit.ch

  6. Assessing the Predictability of Scheduled-Vehicle Travel Times

    DEFF Research Database (Denmark)

    Tiesyte, Dalia; Jensen, Christian Søndergaard

    2009-01-01

    One of the most desired and challenging services in collective transport systems is the real-time prediction of the near-future travel times of scheduled vehicles, especially public buses, thus improving the experience of the transportation users, who may be able to better schedule their travel......, and also enabling system operators to perform real-time monitoring. While travel-time prediction has been researched extensively during the past decade, the accuracies of existing techniques fall short of what is desired, and proposed mathematical prediction models are often not transferable to other...... systems because the properties of the travel-time-related data of vehicles are highly context-dependent, making the models difficult to fit. We propose a framework for evaluating various predictability types of the data independently of the model, and we also compare predictability analysis results...

  7. Assessing the Predictability of Scheduled-Vehicle Travel Times

    DEFF Research Database (Denmark)

    Tiesyte, Dalia; Jensen, Christian Søndergaard

    2009-01-01

    One of the most desired and challenging services in collective transport systems is the real-time prediction of the near-future travel times of scheduled vehicles, especially public buses, thus improving the experience of the transportation users, who may be able to better schedule their travel...... of travel times with the actual prediction errors for real bus trajectories. We have applied the proposed framework to real-time data collected from buses operating in Copenhagen, Denmark......., and also enabling system operators to perform real-time monitoring. While travel-time prediction has been researched extensively during the past decade, the accuracies of existing techniques fall short of what is desired, and proposed mathematical prediction models are often not transferable to other...

  8. Monitoring Travel Time Reliability on Freeways

    NARCIS (Netherlands)

    Tu, Huizhao

    2008-01-01

    Travel time and travel time reliability are important attributes of a trip. The current measures of reliability have in common that in general they all relate to the variability of travel times. However, travel time reliability does not only rely on variability but also on the stability of travel

  9. Monitoring Travel Time Reliability on Freeways

    NARCIS (Netherlands)

    Tu, Huizhao

    2008-01-01

    Travel time and travel time reliability are important attributes of a trip. The current measures of reliability have in common that in general they all relate to the variability of travel times. However, travel time reliability does not only rely on variability but also on the stability of travel ti

  10. The meandering mind: vection and mental time travel.

    Directory of Open Access Journals (Sweden)

    Lynden K Miles

    Full Text Available BACKGROUND: The ability to travel mentally through time sets humans apart from many other species, yet little is known about this core cognitive capacity. In particular, what shapes the passage of the mind's journey through time? Guided by the viewpoint that higher cognitive activity can have a sensory-motor grounding, we explored the possibility that mental time travel is influenced by apparent movement through space. METHODOLOGY/PRINCIPAL FINDINGS: Participants performed a mundane vigilance task, during which they were expected to daydream, while viewing a display that elicited an illusion of self-motion (i.e., vection. Afterwards, the contents of their mind wandering experiences were probed. The results revealed that the direction of apparent motion influenced the temporal focus of mental time travel. While backward vection prompted thinking about the past, forward vection triggered a preponderance of future-oriented thoughts. CONCLUSIONS/SIGNIFICANCE: Consistent with recent evidence that traveling mentally through time entails associated movements in space, the current results demonstrate the converse relationship-apparent movement through space influenced the temporal locus of mental activity. Together, these findings corroborate the viewpoint that mental time travel may be grounded in the embodiment of spatiotemporal information in a bidirectional manner.

  11. Motor Planning.

    Science.gov (United States)

    Wong, Aaron L; Haith, Adrian M; Krakauer, John W

    2015-08-01

    Motor planning colloquially refers to any process related to the preparation of a movement that occurs during the reaction time prior to movement onset. However, this broad definition encompasses processes that are not strictly motor-related, such as decision-making about the identity of task-relevant stimuli in the environment. Furthermore, the assumption that all motor-planning processes require processing time, and can therefore be studied behaviorally by measuring changes in the reaction time, needs to be reexamined. In this review, we take a critical look at the processes leading from perception to action and suggest a definition of motor planning that encompasses only those processes necessary for a movement to be executed-that is, processes that are strictly movement related. These processes resolve the ambiguity inherent in an abstract goal by defining a specific movement to achieve it. We propose that the majority of processes that meet this definition can be completed nearly instantaneously, which means that motor planning itself in fact consumes only a small fraction of the reaction time. © The Author(s) 2014.

  12. Travel Writing on the Edge: An Intermedial Approach to Travel Books and Travel Blogs

    Directory of Open Access Journals (Sweden)

    Calzati Stefano

    2015-08-01

    Full Text Available After discussing the limits and potentialities of the definitions of travel writing proposed by Paul Fussell (1980. Patrick Holland and Graham Huggan (1998 and Jan Borm (2004, the article presents a characterization of travel writing both as a genre with a precise rhetorical status, as well as a praxis of knoivledge, which derives from the interplay between travelling and writing. Building on this, a comparison between two Italian travel books and two Italian travel blogs about China is proposed. Specifically, by considering these texts as “intermedial transpositions” (Wolf 2008 that realize the same generic and epistemological matrix (i.e. travel writing, a Multimodal Critical Discourse Analysis (MCDA is conducted in order to assess: 1 how the book and the blog, as different medial formats, interpret the rhetorical features of the travel writing genre: and 2 to what extent the gnoseological and cross-cultural potentials of travel writing, as a praxis of knowledge, is affected by the process of transposition.

  13. Dynamics of Brownian motors in deformable medium

    Science.gov (United States)

    Woulaché, Rosalie Laure; Kepnang Pebeu, Fabrice Maxime; Kofané, Timoléon C.

    2016-10-01

    The directed transport in a one-dimensional overdamped, Brownian motor subjected to a travelling wave potential with variable shape and exposed to an external bias is studied numerically. We focus our attention on the class of Remoissenet-Peyrard parametrized on-site potentials with slight modification, whose shape can be varied as a function of a parameter s, recovering the sine-Gordon shape as the special case. We demonstrate that in the presence of the travelling wave potential the observed dynamical properties of the Brownian motor which crucially depends on the travelling wave speed, the intensity of the noise and the external load is significantly influenced also by the geometry of the system. In particular, we notice that systems with sharp wells and broad barriers favour the transport under the influence of an applied load. The efficiency of transport of Brownian motors in deformable systems remains equal to 1 (in the absence of an applied load) up to a critical value of the travelling wave speed greater than that of the pure sine-Gordon shape.

  14. Carlson Wagonlit Travel

    CERN Multimedia

    Carlson Wagonlit Travel

    2005-01-01

    Chères clientes, chers clients, Le 3 janvier dernier, nous vous avons informé de la décision des compagnies aériennes de supprimer les commissions versées aux agences de voyages suisses. Cette mesure a été introduite progressivement pour être appliquées maintenant par toutes les compagnies, à quelques rares exceptions près. En conséquence, en accord avec le CERN, nous serons dans l'obligation d'appliquer une nouvelle liste de prix de nos transactions pour les voyages privés. Elle sera applicable dès le lundi 25 juillet 2005. Carlson Wagonlit Travel (CWT) vous propose : Son service de conseil personnalisé, professionnel et compétent Sa recherche de la solution la plus économique et la mieux adaptée à vos besoins Sa neutralité dans les comparaisons de prix et prestations Des informations com...

  15. Do Travellers Accept m-Health Technologies? A Literature Review.

    Science.gov (United States)

    Gallos, Parisis; Kolokathi, Aikaterini; Minou, Ioannis; Mantas, John

    2016-01-01

    A literature review was conducted to present if travellers accept the mobile healthcare (m-Health) technologies. The research was run on international scientific databases using certain keywords to cover the content of the review. From the online search results, 21 publications were selected which combine the "m-Health", "travellers" and "technology acceptance" topics. The majority of the papers are using the Technology Acceptance Model (or a variation of it) on their methodology. Only few papers discuss about the above three topics simultaneously. All of the publications highlight the acceptance of the mobile technologies by their users. Based on this, it can be assumed that travellers may accept the m-Health applications. Further investigation is needed on this subject to give more accurate results.

  16. An evaluation of electric motors for ship propulsion

    OpenAIRE

    Bassham, Bobby A.

    2003-01-01

    Approved for public release; distribution is unlimited An evaluation was conducted of the various propulsion motors being considered for electric ship propulsion. The benefit of such an evaluation is that all of the propulsion options being considered by the U.S. Navy have been described in one document. The AC induction motor, AC synchronous motor, High Temperature Superconducting (HTS) motor and Superconducting DC Homopolar Motor (SDCHM) are examined. The properties, advan...

  17. Knowledge Representation in Travelling Texts

    DEFF Research Database (Denmark)

    Mousten, Birthe; Locmele, Gunta

    2014-01-01

    and the purpose of the text in a new context as well as on predefined parameters for text travel. For texts used in marketing and in technology, the question is whether culture-bound knowledge representation should be domesticated or kept as foreign elements, or should be mirrored or moulded—or should not travel...... at all! When should semantic and pragmatic elements in a text be replaced and by which other elements? The empirical basis of our work is marketing and technical texts in English, which travel into the Latvian and Danish markets, respectively....

  18. Last-Minute Travel Application

    OpenAIRE

    Hubner, Andre; Lenz, Mario; Borch, Roman; Posthoff, Michael

    2000-01-01

    In this article, we present a last-minute travel application as part of a complete virtual travel agency. Each year, a significant amount of tour packages are sold as last minute tours in Germany. It is impossible for a travel agent to keep track of all the offered tour packages. Electronic-commerce applications might present the best possible tour package for a specific customer request. Traditional database-driven applications, as used by most of the tour operators, are not sufficient enoug...

  19. Travel Inside the Ear

    Medline Plus

    Full Text Available ... Infections, and Deafness Balance Taste and Smell Voice, Speech, and Language Información en español Statistics Health Resources ... on Contact Us Privacy Accessibility Freedom of Information Act Site Map Website Policies Free Publications Content Syndication ...

  20. Danish long distance travel A study of Danish travel behaviour and the role of infrequent travel activities

    DEFF Research Database (Denmark)

    Knudsen, Mette Aagaard

    2014-01-01

    .g. socio-economic variables. The analysis of Danish travel activities described in the three different travel surveys has outlined detailed information on Danish travel behaviour at an aggregated level during the past two decades. It has above all revealed the significant role of leisure travel. Private...... in a study of leisure travel, with an analysis of the income elasticity of this travel segment. Due to the different survey methodologies, the samples of leisure activities describe the whole span from daily leisure travel activities embedded into people’s daily routines to the infrequent holiday activities....... The applied model describes the travel distance of leisure travel including the probability of having leisure activities or not. The study finds increasing income elasticities of travelling or not and increasing income elasticities of travel distances as the leisure purposes become less frequently completed...

  1. Travel Time Estimation and Prediction using Mobile Phones: A Cost Effective Method for Developing Countries

    Directory of Open Access Journals (Sweden)

    Satyakumar, M.

    2014-01-01

    Full Text Available Conventional data collection methods lack real time information and involve excessive cost of installation and maintenance. A real-time, low cost travel time data collection system can be developed using mobile phones. This project examines the use of mobile phones for travel time prediction of public transit vehicles and develops a dynamic travel time prediction model. Personnel were employed in public transit vehicles with mobile phones and these mobile phones were tracked continuously. Space information of the mobile phones represents the position of the buses and movement pattern of these mobile phones in turn represents the movement pattern of the public buses. The starting and arrival time at sections obtained from the cellular database were used to get the travel time and speed. Results obtained were statistically significant and it shows that use of mobile phone for travel time data collection is a low cost data collection technique for Indian cities.

  2. Catchment mixing processes and travel time distributions

    National Research Council Canada - National Science Library

    Botter, Gianluca

    2012-01-01

    ...) of travel, residence and evapotranspiration times, which are comprehensive descriptors of the fate of rainfall water particles traveling through catchments, and provide key information on hydrologic...

  3. Community and Public Relations.

    Science.gov (United States)

    Sweet, Harold W.

    This brief presentation describes public relations projects of Dubuque schools to popularize athletics. Among the activities cited which are used to promote community interest in sports events are public school-private school informal matches, talks, swim-a-thons, travel and adventure nights, class banquets with popular speakers, booster clubs,…

  4. THE MOTOR

    DEFF Research Database (Denmark)

    Gammelgaard Nielsen, Anders

    2011-01-01

    MOTOR is the first assignment that students at Unit 1a of the School of Architecture are introduced to. The purpose of the assignment is to shake up the students and their preconceptions of what architec- ture is. This is done by introducing them to a working method that al- lows them to develop...

  5. THE MOTOR

    DEFF Research Database (Denmark)

    Gammelgaard Nielsen, Anders

    2011-01-01

    MOTOR is the first assignment that students at Unit 1a of the School of Architecture are introduced to. The purpose of the assignment is to shake up the students and their preconceptions of what architec- ture is. This is done by introducing them to a working method that al- lows them to develop...

  6. T.T.T.--HALT Creates Traveling Teachers Teams.

    Science.gov (United States)

    Niedzielski, Henri

    1971-01-01

    The nature and function of a body of educators in Hawaii known as the Traveling Teachers Teams are examined in this article. Emulating the business practice of sending sales representatives into the field to inform prospective clients of pertinent information vital to business success, the teachers attempt to inform the general public of the value…

  7. The future of air travel

    National Research Council Canada - National Science Library

    Ben Iannotta

    2015-01-01

      Here, Iannotta discusses the future of air travel. Among other things, safety technologies that seemed exotic will become the norm, like the auto industry's hands-free Bluetooth systems and side-curtain airbags...

  8. Mosquito Bite Prevention For Travelers

    Science.gov (United States)

    ... and parasites that can cause diseases like chikungunya, dengue, Zika, and malaria. If you are traveling to an area where malaria is found, talk to your healthcare provider about malaria prevention medication that may be available. Protect yourself and ...

  9. DCHA Travel & Mission Support System

    Data.gov (United States)

    US Agency for International Development — DTRAMS is a travel data collection system for DCHA that collects information on both the basic details of an employee's trips (destination, length, purpose, etc.)...

  10. PPL Travel & Mission Support System

    Data.gov (United States)

    US Agency for International Development — PTRAMS is a travel data collection system for PPL that collects information on both the basic details of an employee's trips (destination, length, purpose, etc.) and...

  11. GH Travel & Mission Support System

    Data.gov (United States)

    US Agency for International Development — HTRAMS is a travel data collection system for GH that collects information on both the basic details of an employee's trips (destination, length, purpose, etc.) and...

  12. Travelers' Health: Viral Hemorrhagic Fevers

    Science.gov (United States)

    ... Climates Humanitarian Aid Workers Humanitarian Aid Workers in Ecuador Insurance International Adoption Jet Lag Last-Minute Travel ... Landry ML, Warnock DW, editors. Manual of Clinical Microbiology. 10th ed. Washington, DC: ASM Press; 2011. p. ...

  13. Transmedia storytelling on travel stories

    Directory of Open Access Journals (Sweden)

    Adolfo Baltar Moreno

    2016-01-01

    Full Text Available Travel stories form part of a great tradition inside Western Culture which has served historically to describe, to understand and to imagine other cul - tures and communities, far or near, being constituted into a real narra - tive genre. This type of story has been and is a reflection of the perception of the world based on the imaginary worlds created by the travelling narrators. How do modern authors of travel stories take advantage of the opportunities offered by transmedia storytelling? The present article explores the potential of these types of stories as a privileged object of study for transmedia storytelling studies, from the analysis of a sample of 80 narrative productions based on experiences of travel and presented in diverse editions of the Festival Le Grand Bivouac (France. It also shows the existence of a new contemporary trend inside this narrative form that transcends its literary nature.

  14. Consequences of mixing assumptions for time-variable travel time distributions

    NARCIS (Netherlands)

    Velde, van der Y.; Heidbüchel, I.; Lyon, S.W.; Nyberg, L.; Rodhe, A.; Bishop, K.; Troch, P.A.

    2015-01-01

    The current generation of catchment travel time distribution (TTD) research, integrating nearly three decades of work since publication of Water's Journey from Rain to Stream, seeks to represent the full distribution in catchment travel times and its temporal variability. Here, we compare conceptual

  15. 41 CFR 301-70.709 - What can we do to reduce travel charge card delinquencies?

    Science.gov (United States)

    2010-07-01

    ... agreement with the travel charge card contractor (internet training is available for the GSA SmartPay(TM... fraud cases to your agency IG for investigation. (j) For some helpful do's and don'ts for travel... is available on the Internet at http://fss.gsa.gov/services/gsa-smartpay. Click on “Publications...

  16. Consequences of mixing assumptions for time-variable travel time distributions

    NARCIS (Netherlands)

    Velde, van der Y.; Heidbüchel, I.; Lyon, S.W.; Nyberg, L.; Rodhe, A.; Bishop, K.; Troch, P.A.

    2015-01-01

    The current generation of catchment travel time distribution (TTD) research, integrating nearly three decades of work since publication of Water's Journey from Rain to Stream, seeks to represent the full distribution in catchment travel times and its temporal variability. Here, we compare

  17. 41 CFR 301-75.102 - What pre-employment interview travel expenses are not payable?

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 4 2010-07-01 2010-07-01 false What pre-employment... Management Federal Travel Regulation System TEMPORARY DUTY (TDY) TRAVEL ALLOWANCES AGENCY RESPONSIBILITIES 75... of a room at a hotel or other place to transact official business. ...

  18. 41 CFR 301-2.1 - Must I have authorization to travel?

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 4 2010-07-01 2010-07-01 false Must I have... Regulation System TEMPORARY DUTY (TDY) TRAVEL ALLOWANCES INTRODUCTION 2-GENERAL RULES § 301-2.1 Must I have authorization to travel? Yes, generally you must have written or electronic authorization prior to incurring...

  19. 41 CFR 109-38.903-50 - Reporting DOE motor vehicle data.

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 3 2010-07-01 2010-07-01 false Reporting DOE motor... AVIATION, TRANSPORTATION, AND MOTOR VEHICLES 38-MOTOR EQUIPMENT MANAGEMENT 38.9-Federal Motor Vehicle Fleet Report § 109-38.903-50 Reporting DOE motor vehicle data. (a) DOE offices and designated...

  20. 41 CFR 109-38.5104 - Other motor equipment utilization standards.

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 3 2010-07-01 2010-07-01 false Other motor equipment... AVIATION, TRANSPORTATION, AND MOTOR VEHICLES 38-MOTOR EQUIPMENT MANAGEMENT 38.51-Utilization of Motor Equipment § 109-38.5104 Other motor equipment utilization standards. No utilization standards...

  1. 41 CFR 109-38.301-1.53 - Responsibilities of motor vehicle operators.

    Science.gov (United States)

    2010-07-01

    ... motor vehicle operators. 109-38.301-1.53 Section 109-38.301-1.53 Public Contracts and Property... MANAGEMENT REGULATIONS AVIATION, TRANSPORTATION, AND MOTOR VEHICLES 38-MOTOR EQUIPMENT MANAGEMENT 38.3-Official Use of Government Motor Vehicles § 109-38.301-1.53 Responsibilities of motor vehicle...

  2. 42 CFR 84.145 - Motor-operated blower test; minimum requirements.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Motor-operated blower test; minimum requirements... Supplied-Air Respirators § 84.145 Motor-operated blower test; minimum requirements. (a) Motor-operated... connection between the motor and the blower shall be so constructed that the motor may be disengaged from...

  3. Stochastic Movement of Multiple Motor Transported Cargo

    Science.gov (United States)

    Ando, David; Gopinathan, Ajay; Xu, Jing

    2015-03-01

    Experimental observations of cargo position during transport by multiple motors are determined by several coupled stochastic processes. During collective transport, each motor can transition between multiple kinetic states, with the state of each motor influencing the states of the others via mechanical coupling through a common cargo. We measured the motion of a micron sized bead as it is transported by two kinesin motors along a single microtubule track, focusing on cargo displacements which are both axial and transverse to the microtubule. We model the effects of inter-motor interference and the state of each motor throughout time, and back out motor properties using a systematic comparison of experimental observations with simulated model traces over a wide parameter space. Our model captures a surface-associated mode of kinesin, which is only accessible via inter-motor interference in groups, in which kinesin diffuses along the microtubule surface and rapidly ``hops'' between protofilaments without dissociating from the microtubule. This enhances local exploration of the microtubule surface, possibly enabling cellular cargos to overcome macromolecular crowding and to navigate obstacles along micro- tubule tracks without sacrificing overall travel distance.

  4. A Search on the Internet for Evidence of Time Travel

    Science.gov (United States)

    Nemiroff, Robert J.; Wilson, T.

    2014-01-01

    Time travel has captured the public imagination for much of the past century, but few searches for evidence of time travel have ever been done. Here three searches on the Internet for evidence of time travel are described, all three seeking a prescient mention of information not available before a given date. The first investigation sought prescient content placed on the Internet, highlighted by a comprehensive search for specific terms in tweets on Twitter. The second investigation sought prescient inquiries submitted to a search engine, highlighted by a comprehensive search for specific search terms submitted to the Astronomy Picture of the Day (APOD) web site. The third investigation involved a request for a direct Internet communication, either by email or tweet, pre-dating to the time of the inquiry. Given practical verifiability concerns, only time travel from the future was investigated. The main terms searched for involved Comet ISON and Pope Francis, as they became popular during our search window -- between 2006 and 2013. No evidence for time travel was discovered. Although these negative results do not disprove time travel, given the great reach of the Internet, this search is perhaps the most comprehensive to date.

  5. Traveller's thrombosis: airlines still not giving passengers the WRIGHT advice!

    Science.gov (United States)

    Scurr, J R H; Ahmad, N; Thavarajan, D; Fisher, R K

    2010-10-01

    This study has examined the impact of the World Health Organization's Research into Global Hazards of Travel (WRIGHT) Project's phase 1 report on the information given by airlines to their passengers regarding traveller's thrombosis. Official websites of all airlines flying from Heathrow (UK) and John F Kennedy (USA) were located through links on the websites of these two busy international airports. In June 2007, each site was scrutinized by three independent researchers to identify if traveller's thrombosis and its risk factors were discussed and what methods of prevention were advised. This exercise was repeated a year after the publication of the WRIGHT report. One hundred and nineteen international airlines were listed in 2007 (12 were excluded from analysis). A quarter (27/107) of airlines warned of the risk of traveller's thrombosis. A year later, five airlines were no longer operational and there had been no increase in the discussion of traveller's thrombosis (23/102). Additional risk factors discussed in June 2007 versus September 2008: previous venous thromboembolism (16%, 15%); thrombophilia (14%, 15%); family history (11%, 9%); malignancy (12%, 14%); recent surgery (19%, 16%); pregnancy (17%, 16%) and obesity (11%, 12%). Prophylaxis advice given in June 2007 versus September 2008: in-flight exercise (34%, 42%); Hydration (30%, 34%); medical consultation prior to flying (20%, 18%); graduated compression stockings (13%, 12%); aspirin (airlines continue to fail to warn of the risk of traveller's thrombosis or offer appropriate advice. Alerting passengers at risk gives them an opportunity to seek medical advice before flying.

  6. 41 CFR 109-38.105 - Agency purchase and lease of motor vehicles.

    Science.gov (United States)

    2010-07-01

    ... AVIATION, TRANSPORTATION, AND MOTOR VEHICLES 38-MOTOR EQUIPMENT MANAGEMENT 38.1-Fuel Efficient Motor... 41 Public Contracts and Property Management 3 2010-07-01 2010-07-01 false Agency purchase and lease of motor vehicles. 109-38.105 Section 109-38.105 Public Contracts and Property Management...

  7. Long distance travel ‘today’

    DEFF Research Database (Denmark)

    Christensen, Linda

    2014-01-01

    This paper presents an overview of the Dane’s long distance travel. It is a part of the Drivers and Limits project about long distance travel. Long distance travel is in the project defined as infrequent travel with overnight stay. Danes 15-85 years-old travel in average 5.5 long distance travel...... per year og which a third is for international destinations, a third is for domestic second homes and a third are other domestic trips. However, 87% of the kilometres are for international destinations and only 4% are for domestic second homes. Travel activity is very uneven distributed with only half...... of the population having had a journey during the last three month. At the other hand 60% have travelled internationally during the last year and only 2% have never travelled abroad. The paper presents among other things how the travel activity is distributed on travel purpose and mode and how the mode choice...

  8. Sequentially pulsed traveling wave accelerator

    Science.gov (United States)

    Caporaso, George J.; Nelson, Scott D.; Poole, Brian R.

    2009-08-18

    A sequentially pulsed traveling wave compact accelerator having two or more pulse forming lines each with a switch for producing a short acceleration pulse along a short length of a beam tube, and a trigger mechanism for sequentially triggering the switches so that a traveling axial electric field is produced along the beam tube in synchronism with an axially traversing pulsed beam of charged particles to serially impart energy to the particle beam.

  9. Air Travel and TB: an airline perspective.

    Science.gov (United States)

    Dowdall, Nigel P; Evans, Anthony D; Thibeault, Claude

    2010-03-01

    The commercial airline industry in the 21st century is a global business, able to transport large numbers of people to almost any part of the world within a few hours. There has long been concern in public health circles about the potential for transmission of communicable diseases, such as TB, on board aircraft. The recent threats from novel and emerging infectious diseases including SARS and pandemic flu has facilitated unprecedented levels of cooperation between international industry representatives, regulators and public health authorities in addressing the issues of air travel and communicable disease. This paper reviews the regulatory environment, ways in which the risks are mitigated through aspects of aircraft design, opportunities for prevention by identifying individuals who may be suffering from a communicable disease prior to flight and the approach used in managing suspected cases of communicable disease on board aircraft.

  10. Infectious Risks of Traveling Abroad.

    Science.gov (United States)

    Chen, Lin H; Blair, Barbra M

    2015-08-01

    A popular leisure activity, international travel can be associated with some infections. The most common travel-related illnesses appear to be gastrointestinal, dermatologic, respiratory, and systemic febrile syndromes. The pretravel medical consultation includes immunizations, malaria chemoprophylaxis, self-treatment for traveler's diarrhea, and advice on the prevention of a myriad of other infectious causes including dengue, chikungunya, rickettsiosis, leptospirosis, schistosomiasis, and strongyloidiasis. Travel to locations experiencing outbreaks such as Ebola virus disease, Middle East respiratory syndrome, avian influenza, and chikungunya call for specific alerts on preventive strategies. After travel, evaluation of an ill traveler must explore details of exposure, including destinations visited; activities; ingestion of contaminated food or drinks; contact with vectors, animals, fresh water, or blood and body fluids; and other potential exposures. Knowledge of the geographic distribution of infectious diseases is important in generating the differential diagnoses and testing accordingly. Empiric treatment is sometimes necessary when suspicion of a certain diagnosis is strong and confirmatory tests are delayed or lacking, particularly for infections that are rapidly progressive (for example, malaria) or for which timing of testing is prolonged (such as leptospirosis).

  11. The 'selfie' phenomenon: reducing the risk of harm while using smartphones during international travel.

    Science.gov (United States)

    Flaherty, Gerard T; Choi, Joonkoo

    2016-02-01

    Photography is an integral component of the international travel experience. Self-photography is becoming a mainstream behaviour in society and it has implications for the practice of travel medicine. Travellers who take selfies, including with the use of selfie sticks, may be subject to traumatic injuries associated with this activity. This review article is the first in the medical literature to address this emerging phenomenon. Articles indexed on PubMed and Scopus databases through 2015 were retrieved, using the search terms 'travel', combined with 'selfie', 'self-photography', 'smartphone', 'mobile phone' and 'social media'. The reference lists of articles were manually searched for additional publications, and published media reports of travel-related self-photography were examined. The lack of situational awareness and temporary distraction inherent in selfie-taking exposes the traveller to potential hazards. A diverse group of selfie injuries has been reported, including injury and death secondary to selfie-related falls, attacks from wild animals, electrocution, lightning strikes, trauma at sporting events, road traffic and pedestrian accidents. Public health measures adopted by the Russian Federation in response to over 100 reported selfie injuries in 2015 alone are presented. The review also discusses the potential for direct trauma from the use of selfie sticks. Travel-related scenarios where selfies should be avoided include photographs taken from a height, on a bridge, in the vicinity of vehicular traffic, during thunderstorms, at sporting events, and where wild animals are in the background. Recommendations exist which discourage use of mobile phones in drivers and pedestrians. The travel medicine practitioner should routinely counsel travellers about responsible self-photography during international travel and should include this advice in printed material given to the patient. The travel and mobile phone industries should reinforce these health

  12. Similarity-Based Prediction of Travel Times for Vehicles Traveling on Known Routes

    DEFF Research Database (Denmark)

    Tiesyte, Dalia; Jensen, Christian Søndergaard

    2008-01-01

    , historical data in combination with real-time data may be used to predict the future travel times of vehicles more accurately, thus improving the experience of the users who rely on such information. We propose a Nearest-Neighbor Trajectory (NNT) technique that identifies the historical trajectory......The use of centralized, real-time position tracking is proliferating in the areas of logistics and public transportation. Real-time positions can be used to provide up-to-date information to a variety of users, and they can also be accumulated for uses in subsequent data analyses. In particular...... of vehicles that travel along known routes. In empirical studies with real data from buses, we evaluate how well the proposed distance functions are capable of predicting future vehicle movements. Second, we propose a main-memory index structure that enables incremental similarity search and that is capable...

  13. 41 CFR 302-3.512 - How many times are we required to pay for an employee's return travel?

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 4 2010-07-01 2010-07-01 false How many times are we required to pay for an employee's return travel? 302-3.512 Section 302-3.512 Public Contracts and Property Management Federal Travel Regulation System RELOCATION ALLOWANCES RELOCATION ALLOWANCES 3-RELOCATION...

  14. 41 CFR 109-26.501 - Purchase of new motor vehicles.

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 3 2010-07-01 2010-07-01 false Purchase of new motor vehicles. 109-26.501 Section 109-26.501 Public Contracts and Property Management Federal Property... motor vehicles....

  15. Spatial-Temporal Analysis on Spring Festival Travel Rush in China Based on Multisource Big Data

    Directory of Open Access Journals (Sweden)

    Jiwei Li

    2016-11-01

    Full Text Available Spring Festival travel rush is a phenomenon in China that population travel intensively surges in a short time around Chinese Spring Festival. This phenomenon, which is a special one in the urbanization process of China, brings a large traffic burden and various kinds of social problems, thereby causing widespread public concern. This study investigates the spatial-temporal characteristics of Spring Festival travel rush in 2015 through time series analysis and complex network analysis based on multisource big travel data derived from Baidu, Tencent, and Qihoo. The main results are as follows: First, big travel data of Baidu and Tencent obtained from location-based services might be more accurate and scientific than that of Qihoo. Second, two travel peaks appeared at five days before and six days after the Spring Festival, respectively, and the travel valley appeared on the Spring Festival. The Spring Festival travel network at the provincial scale did not have small-world and scale-free characteristics. Instead, the travel network showed a multicenter characteristic and a significant geographic clustering characteristic. Moreover, some travel path chains played a leading role in the network. Third, economic and social factors had more influence on the travel network than geographical location factors. The problem of Spring Festival travel rush will not be effectively improved in a short time because of the unbalanced urban-rural development and the unbalanced regional development. However, the development of the modern high-speed transport system and the modern information and communication technology can alleviate problems brought by Spring Festival travel rush. We suggest that a unified real-time traffic platform for Spring Festival travel rush should be established through the government's integration of mobile big data and the official authority data of the transportation department.

  16. Improving the accuracy of walking piezo motors.

    Science.gov (United States)

    den Heijer, M; Fokkema, V; Saedi, A; Schakel, P; Rost, M J

    2014-05-01

    Many application areas require ultraprecise, stiff, and compact actuator systems with a high positioning resolution in combination with a large range as well as a high holding and pushing force. One promising solution to meet these conflicting requirements is a walking piezo motor that works with two pairs of piezo elements such that the movement is taken over by one pair, once the other pair reaches its maximum travel distance. A resolution in the pm-range can be achieved, if operating the motor within the travel range of one piezo pair. However, applying the typical walking drive signals, we measure jumps in the displacement up to 2.4 μm, when the movement is given over from one piezo pair to the other. We analyze the reason for these large jumps and propose improved drive signals. The implementation of our new drive signals reduces the jumps to less than 42 nm and makes the motor ideally suitable to operate as a coarse approach motor in an ultra-high vacuum scanning tunneling microscope. The rigidity of the motor is reflected in its high pushing force of 6.4 N.

  17. The impact of policy, environmental, and educational interventions: a synthesis of the evidence from two public health success stories.

    Science.gov (United States)

    Gielen, Andrea C; Green, Lawrence W

    2015-04-01

    Motor vehicle safety and tobacco control are among the greatest public health achievements of the 20th century, according to the Centers for Disease Control and Prevention. As the number of miles traveled in the United States multiplied 10 times from the 1920s to the 1990s, the annual motor vehicle crash death rate per vehicle mile traveled decreased by 90%. Similarly, tobacco-related deaths from heart disease, stroke, and cancer were rapidly mounting over the first two thirds of the 20th century. Then, in the last third of the century, tobacco consumption decreased by more than 50%, and rates of heart disease and stroke deaths, and later cancer deaths, declined similarly. This analysis addresses the central question of what lessons can be learned from these success stories that will help public health professionals successfully tackle new and emerging health behavior problems of today and tomorrow? Surveillance, research, multilevel interventions, environmental modifications, and strong policies were key to reducing motor vehicle- and tobacco-related health problems. Generating public support and advocacy, and changing social norms also played critical roles in promoting the safer and smoke-free behaviors. Lessons learned include the need for evidence-based practices and interventions that are ecologically comprehensive with an emphasis on changing environmental determinants and capitalizing on the concept of reciprocal determinism. The analysis concludes with a description of how the PRECEDE-PROCEED planning framework can be used to apply the lessons from motor vehicle safety and tobacco control to other public health threats. © 2015 Society for Public Health Education.

  18. Danish long distance travel A study of Danish travel behaviour and the role of infrequent travel activities

    OpenAIRE

    Knudsen, Mette Aagaard; Rich, Jeppe; Nielsen, Otto Anker

    2014-01-01

    Historically there has been a lack of knowledge with respect to long distance travel. Due to the considerable contribution of long distance travel to total travelled kilometres and the related energy consumption from the transport sector and derived impacts on greenhouse emissions, this is problematic. The average travel distance has steadily increased during the latest decades together with the increasing motorisation of daily travel and international aviation. Previously most focus has been...

  19. A relational approach to analysing leisure travel

    NARCIS (Netherlands)

    Ettema, D.F.; Schwanen, T.

    2012-01-01

    Leisure travel makes up a very significant part of daily travel and therefore needs to be considered in any travel demand management or general land use and transportation policy. Yet, research into leisure mobility has tended to ignore important aspects of leisure travel, such as its joint characte

  20. Motor Vehicle Crash Injuries PSA (:60)

    Centers for Disease Control (CDC) Podcasts

    2014-10-07

    This 60 second Public Service Announcement is based on the October 2014 CDC Vital Signs report. Motor vehicle crashes are costly and preventable. Learn what can be done to help prevent motor vehicle injuries.  Created: 10/7/2014 by National Center for Injury Prevention and Control (NCIPC).   Date Released: 10/7/2014.

  1. Practical advice for perioperative travel nurses.

    Science.gov (United States)

    Brumley, Cindy L

    2002-10-01

    Travel nursing presents unique opportunities that permanent employees may never experience. Today's nursing shortage allows travel nurses to fill temporary staff positions while experiencing the sights, culture, and cuisine of a location of their choosing. This creates a beneficial situation for travel nurses, hospitals, travel companies, and, ultimately, patients. Knowledgeable, flexible nurses and traveler-friendly hospitals can extend contracts if mutually agreeable, thus prolonging the benefits. Before beginning the adventure, however, travelers must have realistic expectations. Many disappointed travelers may have been more successful had they done better research.

  2. The value of travel time variance

    DEFF Research Database (Denmark)

    Fosgerau, Mogens; Engelson, Leonid

    2011-01-01

    This paper considers the value of travel time variability under scheduling preferences that are defined in terms of linearly time varying utility rates associated with being at the origin and at the destination. The main result is a simple expression for the value of travel time variability...... that does not depend on the shape of the travel time distribution. The related measure of travel time variability is the variance of travel time. These conclusions apply equally to travellers who can freely choose departure time and to travellers who use a scheduled service with fixed headway. Depending...... on parameters, travellers may be risk averse or risk seeking and the value of travel time may increase or decrease in the mean travel time....

  3. Preferences for travel time variability – A study of Danish car drivers

    DEFF Research Database (Denmark)

    Hjorth, Katrine; Rich, Jeppe

    Travel time variability (TTV) is a measure of the extent of unpredictability in travel times. It is generally accepted that TTV has a negative effect on travellers’ wellbeing and overall utility of travelling, and valuation of variability is an important issue in transport demand modelling...... preferences, to exclude non-traders, and to avoid complicated issues related to scheduled public transport services. The survey uses customised Internet questionnaires, containing a series of questions related to the traveller’s most recent morning trip to work, e.g.: • Travel time experienced on this day......, • Number of stops along the way, their duration, and whether these stops involved restrictions on time of day, • Restrictions regarding departure time from home or arrival time at work, • How often such a trip was made within the last month and the range of experienced travel times, • What the traveller...

  4. Astronat Dale Gardner using MMU to travel to Westar VI satellite

    Science.gov (United States)

    1984-01-01

    Astronat Dale A. Gardner appears to be under the remote manipulator system (RMS) end effector as he makes a turn in space and preapares to use the manned maneuvering unit (MMU) to travel to Westar VI satellite. The 'stinger' he carries will enter the communications satellite through the nozzle of the spent motor.

  5. Persons with Multiple Disabilities Use Orientation Technology to Find Room Entrances during Indoor Traveling

    Science.gov (United States)

    Lancioni, Giulio E.; Singh, Nirbhay N.; O'Reilly, Mark F.; Sigafoos, Jeff; Alberti, Gloria; Scigliuzzo, Francesca; Signorino, Mario; Oliva, Doretta; Smaldone, Angela; La Martire, Maria L.

    2010-01-01

    These two studies assessed adapted orientation technology for promoting correct direction and room identification during indoor traveling by persons with multiple (e.g., sensory, motor and intellectual/adaptive) disabilities. In Study I, two adults were included who had severe visual impairment or total blindness and deafness and used a wheelchair…

  6. Analysis on Residents’ Travel Characteristics and Transport Policies: A Case Study on Tianjin

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>The history of city development in China and other countries proves that the residents’ travel demand and characteristics apparently change in both time and space terms along with the process of rapid urbanization and motorization.In recent years,

  7. Observational Study of Travelers' Diarrhea.

    Science.gov (United States)

    Meuris

    1995-03-01

    Background: European air travelers returning from Algeria, Egypt, Mexico, Morocco, and Tunisia were interviewed about their experience of travelers' diseases upon arrival in Brussels. Diarrhea was mentioned by 37% of the adults and 27% of the children. These subjects were questioned about the types of measures taken, type and duration of drug treatment (if any), and about duration of diarrhea and side effects experienced. Methods: Final analysis was performed based on 2160 interviews. The largest proportion of diarrhea was reported in the age group 15-24 years (46%). Results: The majority of the 2160 subjects had opted for drug treatment (81%): 927 subjects for loperamide alone, 235 for loperamide in combination with nifuroxazide, and 178 for nifuroxazide alone. Other drugs had been used less frequently. The median time to recovery was 2.4 days with loperamide compared to 3.2 days with nifuroxazide and to 3.4 days for the no-treatment group. Conclusions: A stratification of the results by severity of the diarrhea suggests a rank of antidiarrheal potency as follows: loperamide > nifuroxazide > no-drug treatment. The side effect with the highest incidence was constipation (2.4% with loperamide). (J Travel Med 2:11-15, 1995) Travelers' diarrhea is usually defined as the passage of at least three unformed stools per day or any number of such stools when accompanied by fever, abdominal cramping, or vomiting. The definition may be broadened to include more trivial bowel disturbance.1,2 The duration of this self-limited disease generally is 3 to 5 days. Medical intervention aims at shortening the duration of disease, thus allowing the sufferer to resume his or her usual activities at an early stage. A shortened period of recovery to physical well-being has obvious favorable economic implications if the traveler is on business and may help the maintenance of a desired level of quality of life while a traveler is on holiday. An observational study of various medical

  8. Choosing between travel agencies and the Internet

    OpenAIRE

    2015-01-01

    M.A. (Tourism and Hospitality Management) Travel agents have been traditionally seen as the key intermediary between suppliers of travel services and the traveller. Developments in the field of information technology offer consumers an alternative to booking via a travel agent - the option to plan and arrange holidays online. Due to the ever developing nature of technology, travellers have the luxury of a multitude of choices in their everyday life - particularly so in making decisions reg...

  9. Poliomyelitis--prevention in travellers.

    Science.gov (United States)

    Mayer, Cora A; Neilson, Amy A

    2010-03-01

    This article is the second in a series providing a summary of prevention strategies and vaccination for infections that may be acquired by travellers. The series aims to provide practical strategies to assist general practitioners in giving travel advice, as a synthesis of multiple information sources which must otherwise be consulted. Poliomyelitis is a potentially fatal viral illness, which may cause acute flaccid paralysis and permanent central nervous system damage. Ongoing global efforts to eradicate poliomyelitis have been under way since 1988. Travellers are at risk of infection in countries with endemic wild poliomyelitis virus or imported cases, and can spread the infection to areas where poliomyelitis has been eradicated. While all adults should be immune to poliomyelitis, it is important that at-risk travellers are vaccinated appropriately. Vaccine options and regions currently reporting poliomyelitis are presented from a number of sources, which may facilitate the process of giving travel advice in a general practice setting, although it is also important to seek up-to-date epidemiological information.

  10. Racial disparities in travel time to radiotherapy facilities in the Atlanta metropolitan area.

    Science.gov (United States)

    Peipins, Lucy A; Graham, Shannon; Young, Randall; Lewis, Brian; Flanagan, Barry

    2013-07-01

    Low-income women with breast cancer who rely on public transportation may have difficulty in completing recommended radiation therapy due to inadequate access to radiation facilities. Using a geographic information system (GIS) and network analysis we quantified spatial accessibility to radiation treatment facilities in the Atlanta, Georgia metropolitan area. We built a transportation network model that included all bus and rail routes and stops, system transfers and walk and wait times experienced by public transportation system travelers. We also built a private transportation network to model travel times by automobile. We calculated travel times to radiation therapy facilities via public and private transportation from a population-weighted center of each census tract located within the study area. We broadly grouped the tracts by low, medium and high household access to a private vehicle and by race. Facility service areas were created using the network model to map the extent of areal coverage at specified travel times (30, 45 and 60 min) for both public and private modes of transportation. The median public transportation travel time to the nearest radiotherapy facility was 56 min vs. approximately 8 min by private vehicle. We found that majority black census tracts had longer public transportation travel times than white tracts across all categories of vehicle access and that 39% of women in the study area had longer than 1 h of public transportation travel time to the nearest facility. In addition, service area analyses identified locations where the travel time barriers are the greatest. Spatial inaccessibility, especially for women who must use public transportation, is one of the barriers they face in receiving optimal treatment. Published by Elsevier Ltd.

  11. Can a polycentric structure affect travel behaviour? A comparison of Melbourne, Australia and Riyadh, Saudi Arabia

    Institute of Scientific and Technical Information of China (English)

    M. Alqhatani; S. Setunge; S. Mirodpour

    2014-01-01

    This study models the impact of the shift from a monocentric private-car-oriented city to polycentric public-transport-oriented city. Metropolitan areas have suffered traffic problems-in particular increase in travel time and travel distance. Urban expansion, population growth and road network development have led to urban sprawl in monocentric cities. In many monocentric cities, travel time and distance has steadily increased and is only expected to increase in the future. Excessive travel leads to several problems such as air pollution, noise, congestion, reduction in productive time, greenhouse emissions, and increased stress and accident rates. This study examines the interaction of land use and travel. A model was developed and calibrated to Melbourne and Riyadh conditions and used for scenario analysis. This model included two parts: a spatial model and a transport model. The scenario analysis included variations of residential and activity distribution, as well as conditions of public transport service.

  12. Future Trends in Business Travel Decision Making

    Science.gov (United States)

    Mason, Keith J.

    2002-01-01

    This research surveys twenty large companies and their travellers to identify and evaluate the effects of pressures on the business travel market in the future. The influence of the following areas on the decision making process are addressed: (1) Corporate travel policies and increasing professionalism in corporate purchasing; (2) The development of global strategic airline alliances; (3) The emergence of low cost airlines on short haul markets; and (4) The development of internet based booking tools and travel agency IT. The survey shows differences in views between travel managers, and travellers with regard to corporate travel policies. While travel managers see policy rules, travellers interpret these as guidelines, indicating travel managers will need to take further actions to exercise true control of travel budgets. The data shows that companies are more likely to prescribe a class of airline ticket, than the choice of airline itself. Corporate hierarchical bias in travel policies is still common both for short and particularly long haul flying. Other findings show that while travel managers believe that their companies are likely to sign global deals with strategic airline groups within a five year period in a bid to consolidating spending, they also believe that nearly a third of short haul flying will be taken with low cost carriers, indicating further penetration in this business travel market by these carriers. The paper also provides other predictions about the business travel market, based on the survey findings.

  13. Land use impacts on transport : how land use factors affect travel behavior

    Energy Technology Data Exchange (ETDEWEB)

    Litman, T.

    2005-11-16

    The relationship between land use patterns and travel behaviour was examined with reference to the ability of land use management strategies to achieve transportation planning objectives. The study examined how land use factors such as density, regional accessibility, roadway connectivity affect per capita motor vehicle ownership and use; mode split; non-motorized travel; and accessibility by people who are physically or economically disadvantaged. The social, economic and environmental impacts that result from higher travel were discussed with reference to the degree to which conventional planning accounts for this increased travel. Alternatives for improving mobility in urban and suburban areas were presented. It was concluded that travel behaviour can change by promoting more efficient use of existing roadway capacity, by improving travel options and providing incentives to use alternative transport modes. It was suggested that strategies such as Smart Growth and New Urbanism can be applied in a variety of land use scenarios, including urban, suburban and rural areas to help achieve transportation planning objectives. 122 refs., 16 tabs., 12 figs.

  14. Toxoplasmosis as a travel risk.

    Science.gov (United States)

    Sepúlveda-Arias, Juan C; Gómez-Marin, Jorge E; Bobić, Branko; Naranjo-Galvis, Carlos A; Djurković-Djaković, Olgica

    2014-01-01

    Toxoplasma gondii is a protozoan parasite with worldwide distribution that infects more than one third of the global population. Primary infection in immunocompetent individuals is usually asymptomatic; however, different organs can be affected in immunocompromised individuals leading to the development of encephalitis, myocarditis or pneumonitis. The prevalence of infection with Toxoplasma as well as its genetic structure varies geographically and for that reason travel may be considered as a risk factor to acquire the infection. As toxoplasmosis is a foodborne disease, health care providers should give health education on prevention measures to all prospective travelers in order to decrease the risk of infection in endemic areas. This review presents an overview of the infection with T. gondii with some considerations for travelers to and from endemic zones.

  15. Fundamental Travel Demand Model Example

    Science.gov (United States)

    Hanssen, Joel

    2010-01-01

    Instances of transportation models are abundant and detailed "how to" instruction is available in the form of transportation software help documentation. The purpose of this paper is to look at the fundamental inputs required to build a transportation model by developing an example passenger travel demand model. The example model reduces the scale to a manageable size for the purpose of illustrating the data collection and analysis required before the first step of the model begins. This aspect of the model development would not reasonably be discussed in software help documentation (it is assumed the model developer comes prepared). Recommendations are derived from the example passenger travel demand model to suggest future work regarding the data collection and analysis required for a freight travel demand model.

  16. Elasticity of Long Distance Travelling

    DEFF Research Database (Denmark)

    Knudsen, Mette Aagaard

    2011-01-01

    With data from the Danish expenditure survey for 12 years 1996 through 2007, this study analyses household expenditures for long distance travelling. Household expenditures are examined at two levels of aggregation having the general expenditures on transportation and leisure relative to five other...... aggregated commodities at the highest level, and the specific expenditures on plane tickets and travel packages at the lowest level. The Almost Ideal Demand System is applied to determine the relationship between expenditures on transportation and leisure and all other purchased non-durables within...... packages has higher income elasticity of demand than plane tickets but also higher than transportation and leisure in general. The findings within price sensitiveness are not as sufficient estimated, but the model results indicate that travel packages is far more price elastic than plane tickets which...

  17. CERN’s travelling exhibition goes to Austria

    CERN Document Server

    Mélissa Lanaro

    2011-01-01

    Since April 2009 CERN’s travelling exhibition has been touring through some of the Organization's Member States. After Italy and Denmark it has been on show since February at Austria’s Hartberg Ökopark, a very popular science museum situated some one hundred kilometres from Vienna. To coincide with the CERN exhibition, Austria’s scientific community has organised a series of events for the general public which have had marked success. The exhibition's next destination will be Portugal and preparations are already underway to ensure that it is another resounding success   The travelling exhibition was designed in collaboration with the University of Geneva, as part of the celebrations for its 450th anniversary, and has already notched up a good number of kilometres as it travels from country to country. “In 2010 the exhibition already had around 55,000 visitors,” explains Rolf Landua, who heads the Education Group. Since its inauguration ...

  18. Value of travel time savings

    DEFF Research Database (Denmark)

    Le Masurier, P.; Polak, J.; Pawlak, Janet

    2015-01-01

    A team of specialist market researchers and Value of Time experts comprising members from SYSTRA, Imperial College London and the Technical University of Denmark has conducted a formal audit and peer review of research undertaken by Arup/ITS Leeds/Accent to derive Value of Travel Time Savings...... Preference (RP) models that were used to derive final Values of Travel Time (VTT). This report contains the findings of our audit and peer review of the procedures adopted by the research team during data collection of the three surveys (SP, RP and Employers Surveys); a peer review of the reported approach...

  19. Black Holes: A Traveler's Guide

    Science.gov (United States)

    Pickover, Clifford A.

    1998-03-01

    BLACK HOLES A TRAVELER'S GUIDE Clifford Pickover's inventive and entertaining excursion beyond the curves of space and time. "I've enjoyed Clifford Pickover's earlier books . . . now he has ventured into the exploration of black holes. All would-be tourists are strongly advised to read his traveler's guide." -Arthur C. Clarke. "Many books have been written about black holes, but none surpass this one in arousing emotions of awe and wonder towards the mysterious structure of the universe." -Martin Gardner. "Bucky Fuller thought big. Arthur C. Clarke thinks big, but Cliff Pickover outdoes them both." -Wired. "The book is fun, zany, in-your-face, and refreshingly addictive." -Times Higher Education Supplement.

  20. Traveling-Wave Membrane Photomixers

    Science.gov (United States)

    Wyss, R. A.; Martin, S. C.; Nakamura, B. J.; Neto, A.; Pasqualini, D.; Siegel, P. H.; Kadow, C.; Gossard, A. C.

    2001-01-01

    Traveling-wave photomixers have superior performance when compared with lumped area photomixers in the 1 to 3 THz frequency range. Their large active area and distributed gain mechanism assure high thermal damage threshold and elimination of the capacitive frequency roll-off. However, the losses experienced by the radio frequency wave traveling along the coplanar strips waveguide (due to underlying semi-infinite GaAs substrate) were a serious drawback. In this paper we present device designs and an experimental setup that make possible the realization of photomixers on membranes which eliminate the losses.

  1. Rabies and Risk to Travelers

    Centers for Disease Control (CDC) Podcasts

    2007-10-01

    Each year over 55,000 people die because of rabies, mostly from being bitten by rabid dogs. Over half of all rabies infections occur in children under the age of 15 who live in developing countries, but travelers are not immune. This podcast discusses some of the activities that put travelers at risk for rabies and describes ways to prevent infection.  Created: 10/1/2007 by National Center for the Prevention, Detection and Control of Infectious Diseases (NCPDCID).   Date Released: 10/5/2007.

  2. Hematospermia in a returned traveler.

    Science.gov (United States)

    Lang, Raynell; Minion, Jessica; Wong, Alexander

    2017-01-01

    Hematospermia is a common complaint among patients seen in outpatient urology clinics. The differential diagnosis is broad and includes inflammatory, infectious, neoplastic, structural, systemic, and traumatic causes. The most common infectious causes are uropathogens and sexually transmitted infections. However, with increasing global travel, physicians must maintain a high clinical suspicion for pathogens not endemic to their region, including Echinococcus, Mycobacterium tuberculosis, and Schistosoma.1 We present a case of hematospermia in a traveler returning from Eastern Africa with exposure to Lake Malawi. The patient's microscopic analysis of semen was positive for Schistosoma haematobium, revealing a rare presentation of S. haematobium infection.

  3. Safe travels? HIV transmission among Britons travelling abroad.

    Science.gov (United States)

    Rice, B; Gilbart, V L; Lawrence, J; Smith, R; Kall, M; Delpech, V

    2012-05-01

    The aim of the study was to identify and describe the characteristics of persons born in the UK who acquire HIV infection abroad. Analyses using case reports and follow-up data from the national HIV database held at the Health Protection Agency were performed. Fifteen per cent (2066 of 13 891) of UK-born adults diagnosed in England, Wales and Northern Ireland between 2002 and 2010 acquired HIV infection abroad. Thailand (534), the USA (117) and South Africa (108) were the countries most commonly reported. As compared with UK-born adults acquiring HIV infection in the UK, those acquiring HIV infection abroad were significantly (P sex with a commercial sex worker (5.6% vs. 1%, respectively). Among men infected in Thailand, 11% reported sex with a commercial sex worker. A substantial number of UK-born adults are acquiring HIV infection in countries with generalized HIV epidemics, and in common holiday destinations. Of particular concern is the high proportion of men infected reporting sex with a commercial sex worker. We recommend HIV prevention and testing efforts be extended to include travellers abroad, and that sexual health advice be provided routinely in travel health consultations and in occupational health travel advice packs, particularly to those travelling to high HIV prevalence areas and destinations for sex tourism. Safer sex messages should include an awareness of the potential detrimental health and social impacts of the sex industry. © 2012 British HIV Association.

  4. Travelers' Health: Traveling Safely with Infants and Children

    Science.gov (United States)

    ... be used with caution in the presence of children to avoid burns and inadvertent ingestion. For more information about repellent ... above. These seats often must be carried from home, since availability of ... abroad. In general, children are safest traveling in the rear seat; no ...

  5. 41 CFR 302-3.219 - Is there a limit on how many times I may receive reimbursement for tour renewal travel?

    Science.gov (United States)

    2010-07-01

    ... many times I may receive reimbursement for tour renewal travel? 302-3.219 Section 302-3.219 Public Contracts and Property Management Federal Travel Regulation System RELOCATION ALLOWANCES RELOCATION....219 Is there a limit on how many times I may receive reimbursement for tour renewal travel? (a) If you...

  6. 41 CFR 301-11.10 - Am I required to record departure/arrival dates and times on my travel claim?

    Science.gov (United States)

    2010-07-01

    ... departure/arrival dates and times on my travel claim? 301-11.10 Section 301-11.10 Public Contracts and... dates and times on my travel claim? You must record the date of departure from, and arrival at, the... visited. You do not have to record departure/arrival times, but you must annotate your travel claim when...

  7. 41 CFR 302-4.204 - If my spouse does not accompany me but travels unaccompanied at a different time, what per diem...

    Science.gov (United States)

    2010-07-01

    ... accompany me but travels unaccompanied at a different time, what per diem rate will he/she receive? 302-4.204 Section 302-4.204 Public Contracts and Property Management Federal Travel Regulation System... my spouse does not accompany me but travels unaccompanied at a different time, what per diem rate...

  8. 41 CFR 301-74.26 - What is the traveler required to do if he/she is unable to attend an event for which they were...

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 4 2010-07-01 2010-07-01 false What is the traveler... RESPONSIBILITIES 74-CONFERENCE PLANNING Conference Attendees § 301-74.26 What is the traveler required to do if he... a conference or training registration fee? In all cases where a traveler is unable to attend an...

  9. 41 CFR 304-3.13 - After I begin travel to a meeting, what should I do if a non-Federal source offers to pay for one...

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 4 2010-07-01 2010-07-01 false After I begin travel to... Management Federal Travel Regulation System PAYMENT OF TRAVEL EXPENSES FROM A NON-FEDERAL SOURCE EMPLOYEE'S... night, you may not accept payment from the non-Federal source for a $200 per night hotel room); (2) You...

  10. Environmental Impact of Long Distance Travel

    DEFF Research Database (Denmark)

    Christensen, Linda

    2016-01-01

    This paper presents an analysis of the CO2 emission resulting from long distance travel by Danes. The emissions are analysed as the Danes’ footprint the whole way from Denmark to the final destination. International travel represents 31% of the Danes’ CO2 emission from passenger travel and the cl......This paper presents an analysis of the CO2 emission resulting from long distance travel by Danes. The emissions are analysed as the Danes’ footprint the whole way from Denmark to the final destination. International travel represents 31% of the Danes’ CO2 emission from passenger travel...... and the climate burden from long overseas distances is especially high even though only few travel overseas. The travel activity is furthermore increasing much more for long distances than for European destinations. Domestic travel activity with overnight stay is nearly stagnating. The study furthermore shows...

  11. Social media in travel medicine: a review.

    Science.gov (United States)

    Patel, Dipti; Jermacane, Daiga

    2015-01-01

    The use of social media is widespread and provides new opportunities for healthcare professionals and healthcare organisations to interact with patients, the public, policy makers, and each other. Social media offers the possibility of providing users with up-to-date information when, where, and how they want it, but it also brings with it some challenges. With increasing use of social media, there is potential to change the way travel medicine is delivered; practitioners should consider how to exploit the benefits in their practice, and not be afraid to experiment. However they need to be cognizant of the potential pitfalls. The information exchanged requires careful application as it may not always achieve the desired outcome, it needs to be monitored for quality, accuracy, and reliability, and confidentiality and privacy must be maintained. Most importantly, as social media becomes more sophisticated and widely adopted in the healthcare arena, further evaluation and research is required to understand its impact and its application to travel medicine.

  12. Guest editorial:Travels with the Journal

    Directory of Open Access Journals (Sweden)

    P.S. Kruger

    2012-01-01

    Full Text Available

    With due respect to: Travels with my Aunt (1969: A novel by Graham Greene and Travels with a Donkey in the Cévennes (1879: An adventure story by Robert Louis Stevenson


    The Beginning


    Now this is not the end. It is not even the beginning of the end. But it is, perhaps, the end of the beginning. Sir Winston Leonard Spencer Churchill (1874 – 1965
    Prior to the publishing of the first edition of the South African Journal of Industrial Engineering in June 1987, publishing opportunities in South Africa for Industrial Engineering material were somewhat limited. The main publications catering for some aspects of Industrial Engineering were the FWP-Journal (established 1961 and to some extent ORiON (established 1985. Even internationally rather few journals existed dedicated solely to Industrial Engineering with notable exceptions being the IIE-Transactions (established 1969 and Computers and Industrial Engineering (established 1975 both from the United States of America. At present the Directory of Open Access Journals lists a total of 18 journals with Industrial Engineering as their main subject area.

  13. Traveling, Writing and Engagement in Robyn Davidson’s Tracks

    Directory of Open Access Journals (Sweden)

    Magali Sperling Beck

    2016-06-01

    Full Text Available http://dx.doi.org/10.5007/2175-8026.2016v69n2p93 In 1980, Australian writer Robyn Davidson publishes her travel narrative Tracks, in which she describes her crossing of the central Australian deserts in the late 1970’s, on foot and by herself, being accompanied only by her dog and by four camels. The narrative became an immediate success after its publication, receiving the Thomas Cook Travel Book Award, and been widely read both in Australia and worldwide. It has also become an emblematic example of contemporary travel narratives, mainly due to the fact that it is not only a book about survival or about a woman crossing a desert alone, rather elaborating on the implications between genre and gender; it is also a narrative that recuperates the political and ideological background of an important moment in Australian history. Thus, taking into consideration Davidson’s ambivalence in relation to writing about her travel experiences, in this paper, I argue that Tracks, more than celebrating the process of self-transformation in travel, lingers on the tension between its narrator’s search for freedom and her awareness regarding the responsibilities involved in engaging with cultural difference and in representing geographical crossings.

  14. The value of travel time variance

    OpenAIRE

    Fosgerau, Mogens; Engelson, Leonid

    2010-01-01

    This paper considers the value of travel time variability under scheduling preferences that are de�fined in terms of linearly time-varying utility rates associated with being at the origin and at the destination. The main result is a simple expression for the value of travel time variability that does not depend on the shape of the travel time distribution. The related measure of travel time variability is the variance of travel time. These conclusions apply equally to travellers who can free...

  15. Communication from Carlson Wagonlit Travel

    CERN Multimedia

    2009-01-01

    We are pleased to inform our customers that the range of tourist guides and roadmaps on sale in our offices has now been extended. We aim to help you prepare your upcoming holiday or business trip in any way we can. Please do not hesitate to contact us should you need any further information. The team at CARLSON WAGONLIT TRAVEL

  16. Writing Travel in the Anthropocene

    DEFF Research Database (Denmark)

    Graulund, Rune

    2016-01-01

    by a rapid increase in the mobility of people, goods and information, but primarily examine the impact of the Anthropocene on the notion of travel. For in a world in which the peak of Mount Everest is littered with toilet paper and the Great Pacific Garbage Patch is potentially twice the size of the US...

  17. A Travel To Hong Kong

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    This summer holiday,I had travelled to Hong Kong with many other students.We went to Hong Kong by plane.Hong Kong is very small,but there are many people living there. In Hong Kong,all of the buildings are very tall.There are lots of shops there and

  18. CITM: Asian's Largest Travel Show

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    @@ Jointly hosted by China National Tourism Administration, Yunnan Provincial People's Government and General Administration of Civil Aviation of China, China International Travel Mart (CITM) is a major step to develop inbound tourism, to increase tourism receipts in foreign exchanges, and to enhance the international status of China's tourism industry.

  19. Bacterial infec tions in travellers

    African Journals Online (AJOL)

    This review will concentrate on common infections, namely bacterial ... as pyrexia of unknown origin. ... cause of fever without lung involvement (Pontiac fever). Gram- negative ... Frequent use of DEET-based insect repel- lants .... No firm evidence for chemoprophylaxis, but some studies show benefit in short-term travellers.

  20. Your Travel Dollar. Money Management.

    Science.gov (United States)

    Baran, Nancy H., Ed.

    This illustrated guide was designed to familiarize consumers with planning a vacation trip, whether domestic or abroad. The guide covers setting up a budget; package tours; cruises and charter flights; travel agencies and clubs; and arranging stays in hotels/motels, rental condominiums, bed-and-breakfasts, hostels, campsites, and private…

  1. Time Travel in the Library

    Science.gov (United States)

    Brown, Donna W.

    2005-01-01

    A Time Travel project in the library gives enthusiasm to students to connect with the past and reinforces their research skills while instilling respect for the past years. The librarian should choose one specific decade to highlight in the library and create an extravaganza that would allow memorabilia from that time period to be located without…

  2. Travel to the Rio Olympics

    Centers for Disease Control (CDC) Podcasts

    2016-07-21

    Learn how to stay healthy and safe when travelling to the 2016 Olympic Games in Rio de Janeiro.  Created: 7/21/2016 by National Center for Emerging and Zoonotic Infectious Diseases (NCEZID).   Date Released: 7/21/2016.

  3. Gross motor control

    Science.gov (United States)

    Gross motor control is the ability to make large, general movements (such as waving an arm or lifting a leg). ... Gross motor control is a milestone in the development of an infant. Infants develop gross motor control before they develop ...

  4. Danish travel activities: do we travel more and longer – and to what extent?

    DEFF Research Database (Denmark)

    Knudsen, Mette Aagaard

    Two separate Danish National travel surveys are analysed to outline the amount and extent of national and international travelling during the latest 15-20 years; the national travel survey (TU) describes mainly national daily travel activities, whereas the holiday and business travel survey...... describes national and international travel activities including overnight stay(s). When sampling only respondents with trips above 100 kilometres, they only accounts for around 2% of all daily travel activities, however, this share appears to increase and suggest in general that we do travel longer....... But due to this limited share of trips, the overall impacts of longer distance travelling vanish when considering all daily travel activities. Especially as about 95% of all daily travel destinations range less than 50 kilometres away and in total induce an average trip length of 20 kilometres. If focus...

  5. Surveillance for travel-related disease--GeoSentinel Surveillance System, United States, 1997-2011.

    Science.gov (United States)

    Harvey, Kira; Esposito, Douglas H; Han, Pauline; Kozarsky, Phyllis; Freedman, David O; Plier, D Adam; Sotir, Mark J

    2013-07-19

    In 2012, the number of international tourist arrivals worldwide was projected to reach a new high of 1 billion arrivals, a 48% increase from 674 million arrivals in 2000. International travel also is increasing among U.S. residents. In 2009, U.S. residents made approximately 61 million trips outside the country, a 5% increase from 1999. Travel-related morbidity can occur during or after travel. Worldwide, 8% of travelers from industrialized to developing countries report becoming ill enough to seek health care during or after travel. Travelers have contributed to the global spread of infectious diseases, including novel and emerging pathogens. Therefore, surveillance of travel-related morbidity is an essential component of global public health surveillance and will be of greater importance as international travel increases worldwide. September 1997-December 2011. GeoSentinel is a clinic-based global surveillance system that tracks infectious diseases and other adverse health outcomes in returned travelers, foreign visitors, and immigrants. GeoSentinel comprises 54 travel/tropical medicine clinics worldwide that electronically submit demographic, travel, and clinical diagnosis data for all patients evaluated for an illness or other health condition that is presumed to be related to international travel. Clinical information is collected by physicians with expertise or experience in travel/tropical medicine. Data collected at all sites are entered electronically into a database, which is housed at and maintained by CDC. The GeoSentinel network membership program comprises 235 additional clinics in 40 countries on six continents. Although these network members do not report surveillance data systematically, they can report unusual or concerning diagnoses in travelers and might be asked to perform enhanced surveillance in response to specific health events or concerns. During September 1997-December 2011, data were collected on 141,789 patients with confirmed or

  6. Equivalent Circuit Modeling of a Rotary Piezoelectric Motor

    DEFF Research Database (Denmark)

    El, Ghouti N.; Helbo, Jan

    2000-01-01

    In this paper, an enhanced equivalent circuit model of a rotary traveling wave piezoelectric ultrasonic motor "shinsei type USR60" is derived. The modeling is performed on the basis of an empirical approach combined with the electrical network method and some simplification assumptions about...

  7. Motor Vehicle Safety (A Cup of Health with CDC)

    Centers for Disease Control (CDC) Podcasts

    2014-10-16

    In our highly mobile society, travel in vehicles is an almost daily occurrence for most Americans. Every trip places us at risk for serious injury. In this podcast, Dr. Gwen discusses ways to avoid serious injuries in motor vehicles.  Created: 10/16/2014 by MMWR.   Date Released: 10/16/2014.

  8. Systematic modeling for free stators of rotary - Piezoelectric ultrasonic motors

    DEFF Research Database (Denmark)

    Mojallali, Hamed; Amini, Rouzbeh; Izadi-Zamanabadi, Roozbeh

    2007-01-01

    An equivalent circuit model with complex elements is presented in this paper to describe the free stator model of traveling wave piezoelectric motors. The mechanical, dielectric and piezoelectric losses associated with the vibrator are considered by introducing the imaginary part to the equivalent...

  9. Network structure and travel time perception.

    Science.gov (United States)

    Parthasarathi, Pavithra; Levinson, David; Hochmair, Hartwig

    2013-01-01

    The purpose of this research is to test the systematic variation in the perception of travel time among travelers and relate the variation to the underlying street network structure. Travel survey data from the Twin Cities metropolitan area (which includes the cities of Minneapolis and St. Paul) is used for the analysis. Travelers are classified into two groups based on the ratio of perceived and estimated commute travel time. The measures of network structure are estimated using the street network along the identified commute route. T-test comparisons are conducted to identify statistically significant differences in estimated network measures between the two traveler groups. The combined effect of these estimated network measures on travel time is then analyzed using regression models. The results from the t-test and regression analyses confirm the influence of the underlying network structure on the perception of travel time.

  10. 49 CFR 229.55 - Piston travel.

    Science.gov (United States)

    2010-10-01

    ..., DEPARTMENT OF TRANSPORTATION RAILROAD LOCOMOTIVE SAFETY STANDARDS Safety Requirements Brake System § 229.55 Piston travel. (a) Brake cylinder piston travel shall be sufficient to provide brake shoe clearance...

  11. Vegan travel- The ways how vegan diet influences travel experience.

    OpenAIRE

    Kansanen, Iiris

    2013-01-01

    Following a certain diet may create challenges when dining out, let alone when travelling to another country, where language barriers and cultural differences can set certain difficulties. Veganism is ideology based diet in which a person excludes all the animalia based products from the diet. The most common reason for veganism is animal rights, however also health, nature and other reasons are likely. This thesis has been commissioned by Vegaaniliitto ry (Finnish Vegan Society) and is a...

  12. 41 CFR 102-34.305 - What forms do we use to transfer ownership when selling a motor vehicle?

    Science.gov (United States)

    2010-07-01

    ..., farm machinery, and certain military-design motor vehicles and motor vehicles that are damaged beyond... transfer ownership when selling a motor vehicle? 102-34.305 Section 102-34.305 Public Contracts and... REGULATION PERSONAL PROPERTY 34-MOTOR VEHICLE MANAGEMENT Disposal of Motor Vehicles § 102-34.305 What...

  13. Epidemiology of Child Motor Vehicle Crash Injuries and Fatalities

    Science.gov (United States)

    Arbogast, Kristy B.; Durbin, Dennis R.

    Although children represent only 10-15 % of the overall traffic fatality burden in the United States, motor vehicle crashes (MVCs) remain the leading cause of death and disability for children and young adults; and, close to half of all unintentional injury deaths to children and adolescents (Centers for Disease Control and Prevention National Center for Injury Prevention and Control, Web-based Injury Statistics Query and Reporting System [CDC NCIPC WISQARS] 2010). Moreover, their exposure to motor vehicle risk is significant because they travel by motor vehicles nearly as much as adults. Prevention of the fatalities, injuries and disability associated with MVC must be a priority for ensuring our children's overall health.

  14. [Hospitals in Hesse in the view of enlightened travellers].

    Science.gov (United States)

    Vanja, Christina

    2006-01-01

    The "Hohen Hospitäler", hospitals founded by landgrave Philipp dem Grossmütigen during the years 1533-1542, were seen as an expression of greatest caritas in Early Modern times. These protestant institutions for the poor and sick underlings of Hesse were appreciated as charitable shelters by noblemen and commoners. This situation changed dramatically at the end of the 18th century. The first critics were travelling philosophers of the Enlightenment, who visited the "mad houses" of Hesse as well as other oddities. They published their experiences in travel reports. Although the hospitals as integrated institutions still cared for both psychiatric and somatic patients, these authors only concentrated on the mad inmates. The fact that these were kept in "dark and dirty cloistral corridors" was the central point of criticism. This negative situation was confronted by the travellers not only with a demand for more hygiene but also with a call for an academically trained physician. Furthermore, they claimed for dissecting deceased patients in order to explore the nature of madness. A comparison of these travel reports with the first psychiatric publications of the early 19th century discloses a literary discourse. It leads from the reports of travellers with a general interest to specialist literature of early psychiatry. Obviously it had a formative influence on the self-conception of this new medical field, which benefited from the criticism concerning the allegedly inhumane conditions in the old hospitals. Three questions follow from this statement: 1. Which were the images produced or reproduced by the travellers in their reports? 2. Which were the standards against which the critics measured their reports? 3. In how far were the philanthropic aims of the enlightened travellers related to the self-conception of the hospitals and their inmates? Travelling reports are compared with the circumstances in the hospitals. This comparison throws light in the "invention" of

  15. TravInfo Evaluation: Traveler Response Element; TravInfo 817-1717 Caller Study; Phase 2 Results

    OpenAIRE

    Koo, Ronald; Yim, Y. B.

    2001-01-01

    TravInfo was a federally funded Field Operational Test (FOT) of the Advanced Traveler Information System (ATIS) in the San Francisco Bay Area. The general public can obtain most current traveler information through TravInfo's Traveler Advisory Telephone System (TATS) and privately offered information services including traffic Web sites. As part of the TravInfo FOT Evaluation, two waves of TATS callers were surveyed. The first wave of the TATS caller survey was conducted in April 1997. The se...

  16. Ongoing outbreak of an acute muscular Sarcocystis-like illness among travellers returning from Tioman Island, Malaysia, 2011-2012.

    Science.gov (United States)

    Esposito, D H; Freedman, D O; Neumayr, A; Parola, P

    2012-11-08

    As of 4 November, 2012, 100 patients with an acute muscular Sarcocystis-like illness associated with travel to Tioman Island, Malaysia, have been identified. Thirty-five travelled there mostly during July and August 2011 and 65 mostly during July and August 2012, suggesting an ongoing outbreak. Epidemiological investigations are ongoing. Public health agencies and practicing clinicians should be aware of this rarely-reported disease in humans and consider it as differential diagnosis in travellers returning from Tioman Island.

  17. Cost-benefit analysis of permanent change of duty station (PCS) modes of travel for moves to Alaska

    OpenAIRE

    Massaquoi, Mohamed B.

    2013-01-01

    Approved for public release; distribution is unlimited. This research examines whether permanent change of station (PCS) travel by privately owned vehicle (POV) to Alaska is to the governments advantage. The objectives of this research are to determine estimated total costs of PCS travel to Alaska by various modes of travel; to identify which of the PCS cost drivers has the greatest impact on government expenditures; and to calculate and project potential cost savings to the government bas...

  18. A travelers' clinic in an academic setting.

    OpenAIRE

    Cordes, D H; Baca, C T; Grant, K. J.

    1989-01-01

    The Department of Family and Community Medicine at the University of Arizona has operated a travelers' clinic since 1983, staffed primarily by faculty and residents from the sections of preventive medicine, occupational medicine, and family medicine. We describe the clinic experience in providing preventive medical services to international travelers. Summer months are the busiest. Destinations of the travelers show a clear predominance of travel to less-developed countries, and this is refle...

  19. FACTORS INFLUENCING THE EVOLUTION OF YOUTH TRAVEL

    Directory of Open Access Journals (Sweden)

    Student Claudia MOISĂ

    2010-01-01

    Full Text Available Youth travel is an important part of global tourism, consequently, getting to know the evolution of this form of tourism requires an approach of the aspects regarding the permissive and restrictive factors that influence the youth travel dynamic worldwide. In terms of the factors that influence youth travel, we highlighted these two categories of factors (permissive and restrictive and, within each category, we tried to singularize the influence of every factor over youth travel.

  20. Motor control for a brushless DC motor

    Science.gov (United States)

    Peterson, William J. (Inventor); Faulkner, Dennis T. (Inventor)

    1985-01-01

    This invention relates to a motor control system for a brushless DC motor having an inverter responsively coupled to the motor control system and in power transmitting relationship to the motor. The motor control system includes a motor rotor speed detecting unit that provides a pulsed waveform signal proportional to rotor speed. This pulsed waveform signal is delivered to the inverter to thereby cause an inverter fundamental current waveform output to the motor to be switched at a rate proportional to said rotor speed. In addition, the fundamental current waveform is also pulse width modulated at a rate proportional to the rotor speed. A fundamental current waveform phase advance circuit is controllingly coupled to the inverter. The phase advance circuit is coupled to receive the pulsed waveform signal from the motor rotor speed detecting unit and phase advance the pulsed waveform signal as a predetermined function of motor speed to thereby cause the fundamental current waveform to be advanced and thereby compensate for fundamental current waveform lag due to motor winding reactance which allows the motor to operate at higher speeds than the motor is rated while providing optimal torque and therefore increased efficiency.

  1. Psychological Aspects of Travel Information Presentation

    NARCIS (Netherlands)

    Dicke-Ogenia, M.

    2012-01-01

    Congestion on road networks causes severe problems in and around large cities. Consequences of congestion include an increase in travel time and travel costs, environmental costs, economic costs, increased energy use and decreased economic growth, reduced travel time reliability, and reduced quality

  2. Travelling 'green': Is tourists' happiness at stake?

    NARCIS (Netherlands)

    J. Nawijn (Jeroen); P.M. Peeters (Paul)

    2010-01-01

    textabstractSeveral western governments have implemented environmental policies which increase the cost of air travel. Such policies aim to reduce the impact of air travel on climate change, but at the same time they restrict tourists in their travels. This study examines the extent to which the

  3. Travel related diseases and optimizing preventive strategies

    NARCIS (Netherlands)

    Wieten, R.W.

    2016-01-01

    With the figure of 1 billion annual travellers continuously increasing, travel is becoming more and more common. The binding element of this thesis is the aim to contribute to the improvement of pre-travel healthcare. The diseases studied either carry a high mortality (rabies, malaria, yellow fever)

  4. 5 CFR 630.207 - Travel time.

    Science.gov (United States)

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Travel time. 630.207 Section 630.207 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS ABSENCE AND LEAVE Definitions and General Provisions for Annual and Sick Leave § 630.207 Travel time. The travel time granted an...

  5. Travelling 'green': is tourists' happiness at stake?

    NARCIS (Netherlands)

    Nawijn, J.; Peeters, P.M.

    2010-01-01

    Several western governments have implemented environmental policies which increase the cost of air travel. Such policies aim to reduce the impact of air travel on climate change, but at the same time they restrict tourists in their travels. This study examines the extent to which the average tourist

  6. Travelling 'green': Is tourists' happiness at stake?

    NARCIS (Netherlands)

    J. Nawijn (Jeroen); P.M. Peeters (Paul)

    2010-01-01

    textabstractSeveral western governments have implemented environmental policies which increase the cost of air travel. Such policies aim to reduce the impact of air travel on climate change, but at the same time they restrict tourists in their travels. This study examines the extent to which the ave

  7. Recommended vaccines for international travelers to India.

    Science.gov (United States)

    Verma, Ramesh; Khanna, Pardeep; Chawla, Suraj

    2015-01-01

    India's tourism industry generated 6.6% of the nation's Gross Domestic Product (GDP) during 2012. International travel to India is predicted to grow at an average annual rate of ∼ 8% over the next decade. The number of foreign tourists has increased by 9% to 5.8 million. Approximately 8% of travelers to developing countries require medical care during or after travel; the main diagnoses are vaccine-preventable diseases. Travelers to India can be exposed to various infectious diseases; water-borne, water-related, and zoonotic diseases may be imported to India where the disease is not endemic. The World Health Organization (WHO) emphasizes that all international travelers should be up to date with routine vaccinations. The recommended vaccinations for travelers to India vary according to the traveler's age, immunization history, existing medical conditions, duration, legal requirements for entry into countries being visited, travelers preferences, and values. Travelers should consult with a doctor so that there is sufficient time for completion of optimal vaccination schedules. No matter where traveling, one should be aware of potential exposure to certain organisms that can cause severely illnesses, even death. There is no doubt that vaccines have reduced or virtually eliminated many diseases that killed or severely disabled children and adults just a few generations ago. Thus, travelers must take recommended vaccines per schedule before traveling to India.

  8. 38 CFR 60.5 - Travel.

    Science.gov (United States)

    2010-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 2 2010-07-01 2010-07-01 false Travel. 60.5 Section 60.5... TEMPORARY LODGING § 60.5 Travel. As a condition for receiving temporary lodging under this part, a veteran must be required to travel either 50 or more miles, or at least two hours from his or her home to...

  9. Business Travellers Vote DRAGONAIR "Best China Airline"

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

      (BEIJING) Dragonair was announced as winner of the Best China Airline category in the Business Traveller Asia-Pacific 2005 Annual Travel Awards today. The magazine asked subscribers who were frequent travellers to vote for an airline based on 17 criteria,including cabin staff, comfort, route network and scheduling.……

  10. The Traveler with Sickle Cell Disease

    Science.gov (United States)

    Willen, Shaina M.; Thornburg, Courtney D.; Lantos, Paul M.

    2014-01-01

    Background Sickle cell disease (SCD) is the most common genetic disease among persons with African ancestry. This article provides a background on SCD and reviews many important aspects of travel preparation in this population. Methods The medical literature was searched for studies about travel-associated preparedness and complications in individuals with SCD. Topics researched included malaria, bacterial infections, vaccinations, dehydration, altitude, air travel, and travel preparedness. Results There is very little published literature that specifically addresses the risks faced by travelers with SCD. Rates of medical complications during travel appear to be high. There is a body of literature that describes complications of SCD in indigenous populations, particularly within Africa. The generalizability of these data to a traveler are uncertain. Combining these sources of data and the broader medical literature we address major travel-related questions that may face a provider preparing an individual with SCD for safe travel. Conclusions Travelers with SCD face considerable medical risks when traveling to developing tropical countries; these include malaria, bacterial infections, hypovolemia, and sickle cell-associated vaso-occlusive crises. Frank counseling about risks, vigilant preventative measures, and contingency planning for illness while abroad are necessary parts of the pre-travel visit for individuals with SCD. PMID:24947546

  11. Acute Chagas Disease in a Returning Traveler

    Science.gov (United States)

    Carter, Yvonne L.; Juliano, Jonathan J.; Montgomery, Susan P.; Qvarnstrom, Yvonne

    2012-01-01

    Acute Chagas disease is rarely recognized, and the risk for acquiring the disease is undefined in travelers to Central America. We describe a case of acute Chagas disease in a traveler to Costa Rica and highlight the need for increased awareness of this infection in travelers to Chagas-endemic areas. PMID:23091192

  12. Family structure and its relationship to travel

    Science.gov (United States)

    Christine Cornell McCreedy; Joseph T. O' Leary; Daniel Fesenmaier

    1992-01-01

    This paper examines the relationship between family structure and travel to further understand what differences exist between family groups. Results indicate that the absence of a husband delays travel for single mothers and that they are not as well-off as their married counterparts. We examine other travel and leisure studies to make comparisons with these data,...

  13. Psychological Aspects of Travel Information Presentation

    NARCIS (Netherlands)

    Dicke-Ogenia, M.

    2012-01-01

    Congestion on road networks causes severe problems in and around large cities. Consequences of congestion include an increase in travel time and travel costs, environmental costs, economic costs, increased energy use and decreased economic growth, reduced travel time reliability, and reduced quality

  14. [Cyclospora cayetanensis outbreak in travelers to Cuba].

    Science.gov (United States)

    Ramírez-Olivencia, Germán; Herrero, Maria Dolores; Subirats, Mercedes; Rivas González, Pablo; Puente, Sabino

    2008-11-01

    Initially described in travelers, outbreaks of cyclosporiasis were soon linked to imported food products. An outbreak of cyclosporiasis in Spanish travelers is described. After identification of Cyclospora cayetanensis in stool analyses, a specific questionnaire was completed. Pyrosis was described in 57% of cases (4/7). Peptic symptoms can be a useful clue to indicate the diagnosis of cyclosporiasis in patients with travelers' diarrhea.

  15. Business Travellers Vote DRAGONAIR "Best China Airline"

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    @@ (BEIJING) Dragonair was announced as winner of the Best China Airline category in the Business Traveller Asia-Pacific 2005 Annual Travel Awards today. The magazine asked subscribers who were frequent travellers to vote for an airline based on 17 criteria,including cabin staff, comfort, route network and scheduling.

  16. Discounts at the Carlson Wagonlit travel agency

    CERN Multimedia

    2008-01-01

    The Carlson Wagonlit travel agency is offering exceptional discounts of up to 40% for bookings with M-Travel before 29 February 2008 and Helvetic Tours before 30 March 2008. For terms and conditions and further information please contact the CERN Carlson Wagonlit Travel office, Main Building (500), Tel. 72763.

  17. How Should Passenger Travel in Mexico City Be Priced?

    OpenAIRE

    2008-01-01

    This paper uses an analytical-simulation model to examine the optimal extent and welfare effects of pricing reforms for passenger transportation in Mexico City. The model incorporates travel by auto, microbus, public bus, and rail, plus externalities from local and global air pollution, traffic congestion, and road accidents. In our benchmark case, the optimal gasoline tax is $2.72 (29.6 pesos) per gallon, or 16 times the current tax. However, a per-mile toll would reduce traffic congestion, ...

  18. How Should Passenger Travel in Mexico City Be Priced?

    OpenAIRE

    2010-01-01

    This paper uses an analytical-simulation model to examine the optimal pricing of the passenger transportation system in Mexico City. The model incorporates travel by auto, microbus, public bus, and rail, as well as externalities from local and global air pollution, traffic congestion, and road accidents. In our benchmark case, the optimal gasoline tax is $2.72 per gallon, or 16 times the current tax. However, a per mile toll would reduce traffic congestion, the largest externality, more direc...

  19. Potential for international spread of wild poliovirus via travelers

    OpenAIRE

    Wilder-Smith, Annelies; Leong, Wei-Yee; Lopez, Luis Fernandez; Amaku, Marcos; Quam, Mikkel; Khan, Kamran; MASSAD, Eduardo

    2015-01-01

    Background: The endgame of polio eradication is hampered by the international spread of poliovirus via travelers. In response to ongoing importations of poliovirus into polio-free countries, on 5 May 2014, WHO's Director-General declared the international spread of wild poliovirus a public health emergency of international concern. Our objective was to develop a mathematical model to estimate the international spread of polio infections. Methods: Our model took into account polio endemicity i...

  20. Plasma Colloquium Travel Grant Program

    Energy Technology Data Exchange (ETDEWEB)

    Hazeltine, R.D.

    1998-09-14

    OAK B188 Plasma Colloquium Travel Grant Program. The purpose of the Travel Grant Program is to increase the awareness of plasma research. The new results and techniques of plasma research in fusion plasmas, plasma processing space plasmas, basic plasma science, etc, have broad applicability throughout science. The benefits of these results are limited by the relatively low awareness and appreciation of plasma research in the larger scientific community. Whereas spontaneous interactions between plasma scientists and other scientists are useful, a focused effort in education and outreach to other scientists is efficient and is needed. The academic scientific community is the initial focus of this effort, since that permits access to a broad cross-section of scientists and future scientists including undergraduates, graduate students, faculty, and research staff.

  1. Multiply Phased Traveling BPS Vortex

    CERN Document Server

    Kimm, Kyoungtae; Cho, Y M

    2016-01-01

    We present the multiply phased current carrying vortex solutions in the U(1) gauge theory coupled to an $(N+1)$-component SU(N+1) scalar multiplet in the Bogomolny limit. Our vortex solutions correspond to the static vortex dressed with traveling waves along the axis of symmetry. What is notable in our vortex solutions is that the frequencies of traveling waves in each component of the scalar field can have different values. The energy of the static vortex is proportional to the topological charge of $CP^N$ model in the BPS limit, and the multiple phase of the vortex supplies additional energy contribution which is proportional to the Noether charge associated to the remaining symmetry.

  2. TRAVEL IN THE SCHENGEN AREA

    CERN Multimedia

    Relations with the Host States Service

    2001-01-01

    You are reminded that holders of French residence permits (for example, the carte spéciale issued by the French Ministry of Foreign Affairs, a resident's card, a temporary residence card or a receipt issued during the renewal of such residence documents) do not need visas for tourist travel (including conferences) to countries applying the provisions of the Schengen Convention, provided that the duration of the travel is less than three months. The countries applying the provisions of the Schengen Convention are Austria, Belgium, France, Germany, Greece, Italy, Luxembourg, the Netherlands, Portugal and Spain; and since 25 March 2001 Denmark, Finland, Iceland, Norway and Sweden. For longer stays and for other than tourist visits, you are strongly advised to make enquiries at the relevant consulates.http://www.cern.ch/relations/

  3. Travel intermediaries and responsibility for compliance with EU travel law : A scattered legal picture

    NARCIS (Netherlands)

    de Vries, Anne

    2016-01-01

    Travel intermediaries, commonly known as travel agencies, are important and well-known actors in the travel sector and online travel agencies such as Expedia, Booking.com and AirBnB are booming. Although intermediaries obviously bring clear benefits for contracting parties, they also complicate the

  4. Travel intermediaries and responsibility for compliance with EU travel law : A scattered legal picture

    NARCIS (Netherlands)

    de Vries, Anne

    2016-01-01

    Travel intermediaries, commonly known as travel agencies, are important and well-known actors in the travel sector and online travel agencies such as Expedia, Booking.com and AirBnB are booming. Although intermediaries obviously bring clear benefits for contracting parties, they also complicate the

  5. On the relationship between travel time and travel distance in the Netherlands

    NARCIS (Netherlands)

    Rietveld, P.; Zwart, B.; van Wee, B.; van der Hoorn, A.I.J.M.

    1999-01-01

    This paper gives a detailed empirical analysis of the relationships between different indicators of costs of commuting trips by car: difference as the crow flies, shortest travel time according to route planner, corresponding travel distance, and reported travel time. Reported travel times are

  6. On the relationship between travel time and travel distance in the Netherlands

    NARCIS (Netherlands)

    Rietveld, P.; Zwart, B.; van Wee, B.; van der Hoorn, A.I.J.M.

    1999-01-01

    This paper gives a detailed empirical analysis of the relationships between different indicators of costs of commuting trips by car: difference as the crow flies, shortest travel time according to route planner, corresponding travel distance, and reported travel time. Reported travel times are usual

  7. Quantifying the Effect of Fast Charger Deployments on Electric Vehicle Utility and Travel Patterns via Advanced Simulation: Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Wood, E.; Neubauer, J.; Burton, E.

    2015-02-01

    The disparate characteristics between conventional (CVs) and battery electric vehicles (BEVs) in terms of driving range, refill/recharge time, and availability of refuel/recharge infrastructure inherently limit the relative utility of BEVs when benchmarked against traditional driver travel patterns. However, given a high penetration of high-power public charging combined with driver tolerance for rerouting travel to facilitate charging on long-distance trips, the difference in utility between CVs and BEVs could be marginalized. We quantify the relationships between BEV utility, the deployment of fast chargers, and driver tolerance for rerouting travel and extending travel durations by simulating BEVs operated over real-world travel patterns using the National Renewable Energy Laboratory's Battery Lifetime Analysis and Simulation Tool for Vehicles (BLAST-V). With support from the U.S. Department of Energy's Vehicle Technologies Office, BLAST-V has been developed to include algorithms for estimating the available range of BEVs prior to the start of trips, for rerouting baseline travel to utilize public charging infrastructure when necessary, and for making driver travel decisions for those trips in the presence of available public charging infrastructure, all while conducting advanced vehicle simulations that account for battery electrical, thermal, and degradation response. Results from BLAST-V simulations on vehicle utility, frequency of inserted stops, duration of charging events, and additional time and distance necessary for rerouting travel are presented to illustrate how BEV utility and travel patterns can be affected by various fast charge deployments.

  8. Breast cancer stage at diagnosis: is travel time important?

    Science.gov (United States)

    Henry, Kevin A; Boscoe, Francis P; Johnson, Christopher J; Goldberg, Daniel W; Sherman, Recinda; Cockburn, Myles

    2011-12-01

    Recent studies have produced inconsistent results in their examination of the potential association between proximity to healthcare or mammography facilities and breast cancer stage at diagnosis. Using a multistate dataset, we re-examine this issue by investigating whether travel time to a patient's diagnosing facility or nearest mammography facility impacts breast cancer stage at diagnosis. We studied 161,619 women 40 years and older diagnosed with invasive breast cancer from ten state population based cancer registries in the United States. For each woman, we calculated travel time to their diagnosing facility and nearest mammography facility. Logistic multilevel models of late versus early stage were fitted, and odds ratios were calculated for travel times, controlling for age, race/ethnicity, census tract poverty, rural/urban residence, health insurance, and state random effects. Seventy-six percent of women in the study lived less than 20 min from their diagnosing facility, and 93 percent lived less than 20 min from the nearest mammography facility. Late stage at diagnosis was not associated with increasing travel time to diagnosing facility or nearest mammography facility. Diagnosis age under 50, Hispanic and Non-Hispanic Black race/ethnicity, high census tract poverty, and no health insurance were all significantly associated with late stage at diagnosis. Travel time to diagnosing facility or nearest mammography facility was not a determinant of late stage of breast cancer at diagnosis, and better geographic proximity did not assure more favorable stage distributions. Other factors beyond geographic proximity that can affect access should be evaluated more closely, including facility capacity, insurance acceptance, public transportation, and travel costs.

  9. Travel Software using GPU Hardware

    CERN Document Server

    Szalwinski, Chris M; Dimov, Veliko Atanasov; CERN. Geneva. ATS Department

    2015-01-01

    Travel is the main multi-particle tracking code being used at CERN for the beam dynamics calculations through hadron and ion linear accelerators. It uses two routines for the calculation of space charge forces, namely, rings of charges and point-to-point. This report presents the studies to improve the performance of Travel using GPU hardware. The studies showed that the performance of Travel with the point-to-point simulations of space-charge effects can be speeded up at least 72 times using current GPU hardware. Simple recompilation of the source code using an Intel compiler can improve performance at least 4 times without GPU support. The limited memory of the GPU is the bottleneck. Two algorithms were investigated on this point: repeated computation and tiling. The repeating computation algorithm is simpler and is the currently recommended solution. The tiling algorithm was more complicated and degraded performance. Both build and test instructions for the parallelized version of the software are inclu...

  10. Minimum Covering with Travel Cost

    CERN Document Server

    Fekete, Sandor P; Schmidt, Christiane

    2011-01-01

    Given a polygon and a visibility range, the Myopic Watchman Problem with Discrete Vision (MWPDV) asks for a closed path P and a set of scan points S, such that (i) every point of the polygon is within visibility range of a scan point; and (ii) path length plus weighted sum of scan number along the tour is minimized. Alternatively, the bicriteria problem (ii') aims at minimizing both scan number and tour length. We consider both lawn mowing (in which tour and scan points may leave P) and milling (in which tour, scan points and visibility must stay within P) variants for the MWPDV; even for simple special cases, these problems are NP-hard. We show that this problem is NP-hard, even for the special cases of rectilinear polygons and L_\\infty scan range 1, and negligible small travel cost or negligible travel cost. For rectilinear MWPDV milling in grid polygons we present a 2.5-approximation with unit scan range; this holds for the bicriteria version, thus for any linear combination of travel cost and scan cost. F...

  11. 41 CFR 109-38.204-50 - Records of exempted motor vehicles.

    Science.gov (United States)

    2010-07-01

    ... motor vehicles. 109-38.204-50 Section 109-38.204-50 Public Contracts and Property Management Federal... AVIATION, TRANSPORTATION, AND MOTOR VEHICLES 38-MOTOR EQUIPMENT MANAGEMENT 38.2-Registration, Identification, and Exemptions § 109-38.204-50 Records of exempted motor vehicles. The Director, Office...

  12. 41 CFR 101-39.204 - Obtaining motor vehicles for indefinite assignment.

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 2 2010-07-01 2010-07-01 true Obtaining motor vehicles..., TRANSPORTATION, AND MOTOR VEHICLES 39-INTERAGENCY FLEET MANAGEMENT SYSTEMS 39.2-GSA Interagency Fleet Management System Services § 101-39.204 Obtaining motor vehicles for indefinite assignment. Motor vehicles...

  13. 41 CFR 109-38.204-4 - Report of exempted motor vehicles.

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 3 2010-07-01 2010-07-01 false Report of exempted motor..., TRANSPORTATION, AND MOTOR VEHICLES 38-MOTOR EQUIPMENT MANAGEMENT 38.2-Registration, Identification, and Exemptions § 109-38.204-4 Report of exempted motor vehicles. DOE offices shall provide upon request...

  14. High efficiency motors; Motores de alta eficiencia

    Energy Technology Data Exchange (ETDEWEB)

    Uranga Favela, Ivan Jaime [Energia Controlada de Mexico, S. A. de C. V., Mexico, D. F. (Mexico)

    1992-12-31

    This paper is a technical-financial study of the high efficiency and super-premium motors. As it is widely known, more than 60% of the electrical energy generated in the country is used for the operation of motors, in industry as well as in commerce. Therefore the importance that the motors have in the efficient energy use. [Espanol] El presente trabajo es un estudio tecnico-financiero de los motores de alta eficiencia y los motores super premium. Como es ampliamente conocido, mas del 60% de la energia electrica generada en el pais, es utilizada para accionar motores, dentro de la industria y el comercio. De alli la importancia que los motores tienen en el uso eficiente de la energia.

  15. Open channel flows of magnetic fluid induced by traveling magnetic field

    Science.gov (United States)

    Kuwahara, Takuya; Okubo, Masaaki; Yamane, Ryuichiro

    A theoretical analysis is made on laminar open channel flows of magnetic fluid induced by a non uniform traveling magnetic field which is applied with a stator of a single-sided linear induction motor. The induced flows are mainly in the direction opposite to the traveling direction of the magnetic field and in proportion to the phase velocity of the magnetic field. The velocity profiles are greatly affected by dimensionless wave number of the magnetic field. Near the bottom of the channel, the theoretical velocity distributions agree well with experimental ones which are measured with a laser optical fiber velocity sensor. However, the experimental velocity distributions become larger near the free surface.

  16. [Pre-travel advice for the elderly].

    Science.gov (United States)

    Potin, M

    2005-05-11

    The aging population, the multiplication of leisure activities and the many possibilities to travel will confront the primary care physician to elderly travelers who want health advice prior to their journey, sometimes in remote areas. Age itself is no contra-indication to travel, but the co-morbidities and the potential upsets that the elderly can be submitted to might render her/him more vulnerable to health problems. A medical evaluation, specific recommendations about traveling (including sufficient medication and medical material) and a medical certificate should be proposed by the primary care practitioner to her/his elderly patient planning to travel.

  17. Additive measures of travel time variability

    DEFF Research Database (Denmark)

    Engelson, Leonid; Fosgerau, Mogens

    2011-01-01

    This paper derives a measure of travel time variability for travellers equipped with scheduling preferences defined in terms of time-varying utility rates, and who choose departure time optimally. The corresponding value of travel time variability is a constant that depends only on preference...... parameters. The measure is unique in being additive with respect to independent parts of a trip. It has the variance of travel time as a special case. Extension is provided to the case of travellers who use a scheduled service with fixed headway....

  18. Tourists get US visas for group travel

    Institute of Scientific and Technical Information of China (English)

    Robert Goodman

    2008-01-01

    <正>Chinese will soon be able to travel to the United States on tourist visas,according to an agreement signed in Beijing Tuesday. The memorandum of understanding(MOU) signed between the two countries to facilitate outbound tourist group travel grants the US Approved Destination Status(ADS) after years of negotiations,making it the 134th country on China’s list. Chinese travelers will be able to travel in groups as early as in spring.Currently,the US issues only business travel visas.

  19. Zika Virus in an American Recreational Traveler.

    Science.gov (United States)

    Summers, Dyan J; Acosta, Rebecca Wolfe; Acosta, Alberto M

    2015-01-01

    We report the case of a 48-year-old American traveler who presented to our clinic with diffuse rash, malaise, fatigue, fever, arthralgia, low back pain, and bilateral exudative conjunctivitis. The patient had an extensive vaccination and travel history: most notable for prior receipt of yellow fever vaccine; extensive travel or residence in areas endemic for dengue, chikungunya, and West Nile virus; and recent travel to French Polynesia. Clinical and laboratory findings were consistent with Zika virus (ZIKV) infection. Our report highlights the need to include ZIKV in the differential diagnosis, especially in febrile patients with a rash returning from endemic areas. © 2015 International Society of Travel Medicine.

  20. Illness in the Returned International Traveler.

    Science.gov (United States)

    Sanford, Christopher A; Fung, Claire

    2016-03-01

    Familiarity with the distribution, mode of transmission, and risk factors for acquisition of illnesses commonly transmitted to travelers to low-income nations can help guide clinicians in their work-up of an ill returned traveler. The 3 most common categories of illness in returned international travelers are gastrointestinal illness, fever, and dermatoses. Diarrhea is the most common illness reported in returned international travelers. Fever is a marker of a potentially significant illness; work-up of the ill febrile returned traveler should be conducted promptly. Copyright © 2016 Elsevier Inc. All rights reserved.

  1. [True and virtual risks of travellers].

    Science.gov (United States)

    Hatz, C; Walz, A; Genton, B; Behrens, R

    2014-05-01

    Evidence-based information on travel associated mortality is scarce. Perception, intuition and the availability of interventions such as vaccinations and chemoprophylaxis often guide pre-travel advice. Important risks including accidents and cardiovascular events are not routinely included in pre-travel consultations although they cause more fatalities and costs than infectious diseases. The increased risk of sustaining a road accident in poor economy countries should always be mentioned. The general practitioner is further best placed to discuss possible problems of travellers with chronic diseases before travel.

  2. TRAVEL

    Institute of Scientific and Technical Information of China (English)

    Venice Lau

    2012-01-01

    <正>01拥抱三百六十度天堂级珊瑚水景〉马尔代夫向来都是热门的旅游胜地,最近由Dusit集团开设的Dusit Thani Maldives豪华酒店于今年二月落成,成为当地的新地标。酒店位于Baa Atoll的Mudhdhoo lsland岛上,从首都马累乘坐海上飞机三十五分钟便可到达。一百幢独立别墅充满泰式的建筑艺术气息,而且配备高科技设计。不同特色的度假别墅包括海滩别墅(Beac:h Villas)、舄湖别墅(LagoorVillas)及海洋别墅(Ocean Villas),此外更有两种极尽豪华的海洋亭阁(Ocean Pavilions)及海滩府邸(Ocean Resldences),每幢

  3. TRAVEL

    Institute of Scientific and Technical Information of China (English)

    Carrie Tsang; Phoenix

    2010-01-01

    <正>01意大利首间国家级当代艺术博物馆>由Zaha Hadid建筑事务所设计的MAXXINational Museum of XXI Century Arts位于罗马,是意大利第一个致力于当代艺术的国家公共博物馆。Zaha Hadid在1999年胜出了这个项目的国际设计比赛,2003年开始动工,工程目前已进入完竣阶段,为馆址

  4. 76 FR 51054 - Notice of Utah's Resource Advisory Council (RAC) Conference Call Meetings on the Statewide Travel...

    Science.gov (United States)

    2011-08-17

    ... the Statewide Travel and Transportation Management Planning Policy AGENCY: Bureau of Land Management... Utah RAC Subgroup on the Statewide Travel and Transportation Management Planning Policy will host a... a variety of planning and management issues associated with public land management in Utah....

  5. 49 CFR 571.404 - Standard No. 404; Platform lift installations in motor vehicles.

    Science.gov (United States)

    2010-10-01

    ... Systems for Motor Vehicles (49 CFR 571.403). S4.1.5Platform lighting on public use lifts. Public use lifts... be equipped with a public use lift certified as meeting Federal Motor Vehicle Safety Standard No. 403... subject to paragraph S4.1.1, must be equipped with a platform lift certified as meeting either the public...

  6. Business travelers: vaccination considerations for this population.

    Science.gov (United States)

    Chen, Lin H; Leder, Karin; Wilson, Mary E

    2013-04-01

    Illness in business travelers is associated with reduced productivity on the part of the employee as well as the employer. Immunizations offer a reliable method of preventing infectious diseases for international business travelers. The authors review the travel patterns of business travelers, available data on illnesses they encounter, their potential travel-associated risks for vaccine-preventable diseases and recommendations on immunizations for this population. Routine vaccines (e.g., measles, tetanus and influenza) should be reviewed to assure that they provide current coverage. The combined hepatitis A and hepatitis B vaccine with a rapid schedule offers options for those with time constraints. Other vaccine recommendations for business travelers need to focus on their destinations and activities and underlying health, taking into account the concept of cumulative risk for those with frequent travel, multiple trips or long stays.

  7. Accurate estimation of indoor travel times

    DEFF Research Database (Denmark)

    Prentow, Thor Siiger; Blunck, Henrik; Stisen, Allan

    2014-01-01

    The ability to accurately estimate indoor travel times is crucial for enabling improvements within application areas such as indoor navigation, logistics for mobile workers, and facility management. In this paper, we study the challenges inherent in indoor travel time estimation, and we propose...... the InTraTime method for accurately estimating indoor travel times via mining of historical and real-time indoor position traces. The method learns during operation both travel routes, travel times and their respective likelihood---both for routes traveled as well as for sub-routes thereof. InTraTime...... allows to specify temporal and other query parameters, such as time-of-day, day-of-week or the identity of the traveling individual. As input the method is designed to take generic position traces and is thus interoperable with a variety of indoor positioning systems. The method's advantages include...

  8. [Travel medicine for HIV-infected patients].

    Science.gov (United States)

    Rossi, M; Furrer, H

    2001-06-01

    Many HIV-infected persons travel from temperate zones to (sub)tropical destinations. HIV-specific immigration issues, medical resources abroad and problems regarding travelling with multiple medications have to be anticipated. When prescribing immunizations and specific chemoprophylaxis, the stage of immunodeficiency as well as drug interactions with antiretrovirals and medicaments against opportunistic infections have to be taken into account. Live vaccines may be contraindicated. Immunocompromised HIV-infected travellers have a higher risk for serious courses of diseases by enteropathogens. Therefore a good information about food hygiene is important and a prescription of an antibiotic to take in case of severe diarrhea may be indicated. A new antiretroviral combination therapy should not be started immediately before travelling to the tropics. The possibility to continue an established HIV treatment during travel has to be evaluated cautiously. With good pre-travel advice the risk of severe health problems is low for most HIV-infected travellers.

  9. Update on Zika Virus: Considerations for the Traveling Athlete.

    Science.gov (United States)

    Toresdahl, Brett G; Asif, Irfan M

    2016-09-01

    As public health experts work to contain the outbreak of Zika virus in South America and minimize the devastating prenatal complications, the international sports community prepares for the 2016 Summer Olympic and Paralympic Games in Rio de Janeiro, Brazil. Athletes have publicly expressed concern regarding the health risks of competition in Zika-endemic areas.(33) Ensuring the safety of the athletes during training and competition is the primary role of the team physician. Special consideration is needed for sports teams preparing for travel to areas affected by Zika virus.

  10. John Frassanito &Associates: Designer for Space Travel

    Science.gov (United States)

    Zukowsky, John

    2002-01-01

    When most people think of design for space travel they think immediately of engineers and scientists, not architects or industrial designers. Yet, one of those arts professionals has been at the center of creating "space" in space for almost four decades. John Frassanito (born 1941) is an industrial designer who trained at the Art Center (now the famous Art Center College of Design in Pasadena) in the mid 1960s. After graduation in 1968, he began his design career by working with Raymond Loewy and William Snaith at the same time that Loewy's office was designing the interiors of Skylab, America's first space station (launched 1973). Frassanito worked on Skylab while at the Loewy firm until the early 1970s, when he was hired as a designer within the Computer Terminal Corporation where, in 1972, he designed the Datapoint 2000 -- the computer that the journal Invention and Technology (Fall 1994) called the "direct ancestor of today's PC." Frassanito started his own firm in 1983, where he continued to design computers as well as products for companies such as Sani-Fresh and Scott Paper. But he has made his mark on design for space travel since the mid-1980s, where he has been an outside contractor who has worked on a variety of NASA projects through today. These include 1980s works such as interior configuration and design for Space Station Freedom, as well as concepts for inflatable TransHab structures, through 1990s computer- generated animations for NASA missions, real and conceptual. In fact, Frassanito's high quality of design and animated imaging has been consistently utilized by NASA over the past decade to present mission realities and future concepts to scientists, engineers, lawmakers, and the general public alike. A survey of his work will be the subject of this paper in an effort to document the essential role that visual arts professionals play in designing "space" for space.

  11. 41 CFR 102-34.50 - What size motor vehicles may we obtain?

    Science.gov (United States)

    2010-07-01

    ... MANAGEMENT Obtaining Fuel Efficient Motor Vehicles § 102-34.50 What size motor vehicles may we obtain? (a... 41 Public Contracts and Property Management 3 2010-07-01 2010-07-01 false What size motor vehicles may we obtain? 102-34.50 Section 102-34.50 Public Contracts and Property Management Federal...

  12. 41 CFR 109-38.5106 - Application of motor vehicle use goals.

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 3 2010-07-01 2010-07-01 false Application of motor vehicle use goals. 109-38.5106 Section 109-38.5106 Public Contracts and Property Management Federal... Equipment § 109-38.5106 Application of motor vehicle use goals. (a) At least annually, the motor...

  13. 41 CFR 301-50.8 - Are there any limits on travel arrangements I may make?

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 4 2010-07-01 2010-07-01 false Are there any limits on travel arrangements I may make? 301-50.8 Section 301-50.8 Public Contracts and Property Management... Hotel and Motel Fire Safety Act of 1990 (the Act), as amended (see 5 U.S.C. 5707a). (2) When selecting a...

  14. 41 CFR 302-3.314 - Is there a time limit when I must begin my travel and transportation upon separation?

    Science.gov (United States)

    2010-07-01

    ...-3.314 Is there a time limit when I must begin my travel and transportation upon separation? Yes, all... 41 Public Contracts and Property Management 4 2010-07-01 2010-07-01 false Is there a time limit when I must begin my travel and transportation upon separation? 302-3.314 Section 302-3.314 Public...

  15. The epidemiology of travel-related Salmonella Enteritidis in Ontario, Canada, 2010–2011

    Directory of Open Access Journals (Sweden)

    Tighe Mary-Kathryn

    2012-05-01

    Full Text Available Abstract Background Increases in the number of salmonellosis cases due to Salmonella Enteritidis (SE in 2010 and 2011 prompted a public health investigation in Ontario, Canada. In this report, we describe the current epidemiology of travel-related (TR SE, compare demographics, symptoms and phage types (PTs of TR and domestically-acquired (DA cases, and estimate the odds of acquiring SE by region of the world visited. Methods All incident cases of culture confirmed SE in Ontario obtained from isolates and specimens submitted to public health laboratories were included in this study. Demographic and illness characteristics of TR and DA cases were compared. A national travel survey was used to provide estimates for the number of travellers to various destinations to approximate rates of SE in travellers. Multivariate logistic regression was used to estimate the odds of acquiring SE when travelling to various world regions. Results Overall, 51.9% of SE cases were TR during the study period. This ranged from 35.7% TR cases in the summer travel period to 65.1% TR cases in the winter travel period. Compared to DA cases, TR cases were older and were less likely to seek hospital care. For Ontario travellers, the adjusted odds of acquiring SE was the highest for the Caribbean (OR 37.29, 95% CI 17.87-77.82 when compared to Europe. Certain PTs were more commonly associated with travel (e.g., 1, 4, 5b, 7a, Atypical than with domestic infection. Of the TR cases, 88.9% were associated with travel to the Caribbean and Mexico region, of whom 90.1% reported staying on a resort. Within this region, there were distinct associations between PTs and countries. Conclusions There is a large burden of TR illness from SE in Ontario. Accurate classification of cases by travel history is important to better understand the source of infections. The findings emphasize the need to make travellers, especially to the Caribbean, and health professionals who provide advice to

  16. Estimated Zika virus importations to Europe by travellers from Brazil

    Directory of Open Access Journals (Sweden)

    Eduardo Massad

    2016-05-01

    Full Text Available Background: Given the interconnectivity of Brazil with the rest of the world, Zika virus (ZIKV infections have the potential to spread rapidly around the world via viremic travellers. The extent of spread depends on the travel volume and the endemicity in the exporting country. In the absence of reliable surveillance data, we did mathematical modelling to estimate the number of importations of ZIKV from Brazil into Europe. Design: We applied a previously developed mathematical model on importations of dengue to estimate the number of ZIKV importations into Europe, based on the travel volume, the probability of being infected at the time of travel, the population size of Brazil, and the estimated incidence of ZIKV infections. Results: Our model estimated between 508 and 1,778 imported infections into Europe in 2016, of which we would expect between 116 and 355 symptomatic Zika infections; with the highest number of importations being into France, Portugal and Italy. Conclusions: Our model identified high-risk countries in Europe. Such data can assist policymakers and public health professionals in estimating the extent of importations in order to prepare for the scale up of laboratory diagnostic assays and estimate the occurrence of Guillain–Barré Syndrome, potential sexual transmission, and infants with congenital ZIKV syndrome.

  17. Preventing dengue and chikungunya fever among international travelers.

    Science.gov (United States)

    Tither, Pauline Herold

    2014-11-01

    To describe the vulnerability of U.S. travelers in tropical and subtropical regions of the world to dengue and chikungunya fever, to provide practical recommendations to avoid these mosquito-borne diseases, and to offer a communication tool as an aid for pretravel health consultations. Medical, epidemiological, and entomological research articles and reviews, and reports from government agencies. Dengue and chikungunya fever have growing public health impact around the world. International travelers return to the United States infected with these diseases. Mosquito bite avoidance is the only way to prevent dengue and chikungunya fever. Informed travelers have many options for simple and practical measures to lessen the risk of mosquito bites. A message map can be used as a communication tool for pretravel counseling on the prevention of dengue and chikungunya fever within the time frame of an office visit. In a pretravel health consultation, a nurse practitioner can promote travelers' health and prevent dengue, chikungunya fever, and other mosquito-borne diseases by counseling on the risk of these diseases and giving practical recommendations for prevention using a message map. ©2014 American Association of Nurse Practitioners.

  18. Sexual tourism: implications for travelers and the destination culture.

    Science.gov (United States)

    Marrazzo, Jeanne M

    2005-03-01

    Health care providers in a variety of settings need to improve their ability--along with the capabilities of supporting laboratories, surveillance systems, and services for sex partner management--to diagnose and treat STI. Whether the travel health care sector, as such, is willing to take on the additional burden of STI-related screening and risk reduction counseling has been raised by some authors. Currently, the burden of providing formalized STI care falls on the public sector; however, in the United States, most STI are actually diagnosed in the offices of private physicians. Given that the United States has the highest STI rates of any industrialized country, the undeniable synergy between STI and HIV acquisition, the failure of many American providers to screen for C trachomatis despite clear guidelines, the global resurgence of syphilis and extension of resistant N gonorrhoeae and of HIV, and the risk behaviors consistently reported by travelers, it is hard to argue against travel specialists' joining the daunting battle against these recalcitrant infections and their often devastating consequences. Most of the relevant diagnostic tests are relatively affordable, and patient-centered risk-reduction counseling, once mastered, can be brief and easily integrated into the overall conversation about protecting oneself during travel.

  19. Motor Priming in Neurorehabilitation

    OpenAIRE

    Stoykov, Mary Ellen; Madhavan, Sangeetha

    2015-01-01

    Priming is a type of implicit learning wherein a stimulus prompts a change in behavior. Priming has been long studied in the field of psychology. More recently, rehabilitation researchers have studied motor priming as a possible way to facilitate motor learning. For example, priming of the motor cortex is associated with changes in neuroplasticity that are associated with improvements in motor performance. Of the numerous motor priming paradigms under investigation, only a few ...

  20. Motor Priming in Neurorehabilitation

    OpenAIRE

    Stoykov, Mary Ellen; Madhavan, Sangeetha

    2015-01-01

    Priming is a type of implicit learning wherein a stimulus prompts a change in behavior. Priming has been long studied in the field of psychology. More recently, rehabilitation researchers have studied motor priming as a possible way to facilitate motor learning. For example, priming of the motor cortex is associated with changes in neuroplasticity that are associated with improvements in motor performance. Of the numerous motor priming paradigms under investigation, only a few ...