1,172 research outputs found

    Listening to users’ personal privacy concerns. The implication of trust and privacy concerns on the user's adoption of a MaaS-pilot

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    Mobility as a Service (MaaS) refers to the concept of integrating new mobility services electronically, thereby enabling users to access various public and private transport services via a single digital platform. Through MaaS, service providers aim at developing an integrated service that caters to various demands by mobility users. Personal data such as travel behavior is key in this context, because it allows the development, customization, and personalization of mobility services. Hence, for MaaS to become successful, service providers need to collect users' personal information, and users need to accept data collection. In turn, privacy concerns represent a potential hurdle for the success of MaaS. Therefore, understanding privacy concerns from the users' side can help MaaS providers to increase the users' willingness to share their information. This study aims to add on to earlier research findings on privacy concerns by shedding light on new dimensions emerging from the MaaS service. Understanding privacy concerns from the users' side is key in that regard, as it may enable improved service and system development. A sequential mixed-methods approach is used to collect, analyze, and “mix” both quantitative and qualitative research methods. The primary findings are as follows: (1) Privacy concerns specific to the mobility data collection context exist; (2) users are not necessarily personally worried about their privacy even though they claim privacy is an issue; (3) in contrast to traditional privacy thinking, users' trust in mobility service providers may override their privacy concerns. The study’s results indicate trust is the key to MaaS adoption. Policy recommendations are explored in the end.publishedVersio

    Physical Activity Behavior, Dietary Patterns, and Nutrition Knowledge of Third- and Fourth-Grade Students in Western Massachusetts

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    Our Extension project assessed physical activity patterns and nutrition behavior and knowledge in elementary school students in a low-income community. Dietary patterns were similar to many large-scale studies, which have shown a trend of lower fat consumption; however, these children were unfamiliar with certain nutrient terms and categories. Most physical activities were performed in PE classes; however, community organizations and family played important roles. This survey provides a basis of children\u27s nutrition knowledge and physical activity behavior. From this project we plan to develop appropriate nutrition and physical activity programs for children of similar age and socioeconomic status

    NANOSTRUCTURED MATERIALS FOR MEMORY APPLICATIONS

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    Ph.DDOCTOR OF PHILOSOPH

    The Importance of Entrepreneurship in China and Indonesia

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    Many research results stated that entrepreneurs have an important role for the economy.  Entrepreneurship is able to create an advanced and prosperous country as entrepreneurial as the creator of new jobs, new income, new innovations, and superior in quality to organize the resources needed to create added value. This paper explain the emergence of entrepreneurship in China and Indonesia by providing a practical example as a form of explanation. Keywords:Entrepreneurship, China, Indonesia, Entrepreneurial Activity, Entrepreneurs, Role of entrepreneurship

    Young pre-Low-Mass X-ray Binaries in propeller phase : Nature of the 6.7-hour periodic X-ray source 1E 161348-5055 in RCW 103

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    Discovery of the 6.7-hour periodicity in the X-ray source 1E 161348-5055 in RCW 103 has led to investigations of the nature of this periodicity. We explore a model for 1E 161348-5055, wherein a fast-spinning neutron star with a magnetic field 1012\sim 10^{12} G in a young pre-Low-Mass X-ray Binary (pre-LMXB) with an eccentric orbit of period 6.7 hr operates in the "propeller" phase. The 6.7-hr light curve of 1E 161348-5055 can be quantitatively accounted by a model of orbitally-modulated mass transfer through a viscous accretion disk and subsequent propeller emission (both Illarionov-Sunyaev type and Romanova-Lovelace et al type), and spectral and other properties are also in agreement. Formation and evolution of model systems are shown to be in accordance both with standard theories.Comment: 11 pages, 4 figures, accepted for publication in Astronomy and Astrophysics on 23/08/200

    Renormalizable parameters of the sine-Gordon model

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    The well-known phase structure of the two-dimensional sine-Gordon model is reconstructed by means of its renormalization group flow, the study of the sensitivity of the dynamics on microscopic parameters. Such an analysis resolves the apparent contradiction between the phase structure and the triviality of the effective potential in either phases, provides a case where usual classification of operators based on the linearization of the scaling relation around a fixed point is not available and shows that the Maxwell-cut generates an unusually strong universality at long distances. Possible analogies with four-dimensional Yang-Mills theories are mentioned, too.Comment: 12 pages, 7 figures. Revised form, to appear in Phys. Lett.

    Cyclical behaviour and disc truncation in the Be/X-ray binary A0535+26

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    A0535+26 is shown to display quantised IR excess flux states, which are interpreted as the first observational verification of the resonant truncation scheme proposed by Okazaki and Negueruela (2001) for BeXRBs. The simultaneity of X-ray activity with transitions between these states strongly suggests a broad mechanism for outbursts, in which material lost from the disc during the reduction of truncation radius is accreted by the NS. Furthermore changes between states are shown to be governed by a 1500 day period, probably due to precession of the Be disc, which profoundly dictates the global behaviour of the system. Such a framework appears to be applicable to BeXRBs in general.Comment: 10 pages, 11 figs, submitted to MNRA

    CLASH: Extreme Emission Line Galaxies and Their Implication on Selection of High-Redshift Galaxies

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    We utilize the CLASH (Cluster Lensing And Supernova survey with Hubble) observations of 25 clusters to search for extreme emission-line galaxies (EELGs). The selections are carried out in two central bands: F105W (Y105) and F125W (J125), as the flux of the central bands could be enhanced by the presence of [O III] 4959, 5007 at redshift of about 0.93-1.14 and 1.57-1.79, respectively. The multi-band observations help to constrain the equivalent widths of emission lines. Thanks to cluster lensing, we are able to identify 52 candidates down to an intrinsic limiting magnitude of 28.5 and to a rest-frame [O III] 4959,5007 equivalent width of about 3737 angstrom. Our samples include a number of EELGs at lower luminosities that are missed in other surveys, and the extremely high equivalent width can be only found in such faint galaxies. These EELGs can mimic the dropout feature similar to that of high redshift galaxies and contaminate the color-color selection of high redshift galaxies when the S/N ratio is limited or the band coverage is incomplete. We predict that the fraction of EELGs in the future high redshift galaxy selections cannot be neglected.Comment: 17 pages, 9 figures, 2 tables, Accepted for publication in AP
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