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  1. Essays on smartphones' effects on attention and behavior
    Erschienen: [2021]

    Since the introduction of the iPhone in 2007, smartphones have become an integrated part of human life. Smartphones are excellent tools that help us access information, coordinate journeys, connect with friends and family, and much, much more.... mehr

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    Since the introduction of the iPhone in 2007, smartphones have become an integrated part of human life. Smartphones are excellent tools that help us access information, coordinate journeys, connect with friends and family, and much, much more. However, in parallel with the proliferation of smartphones, more and more concerns about adverse effects on human life have been raised. Research has shown that smartphones can be addictive, affect cognitive abilities, negatively influence social and intimate relationships, reduce academic performance, and correlate with depression and low well-being. In this Ph.D. dissertation, I analyze how smartphones affect human life through three separate chapters. Though examining different domains of human life, the chapters have several things in common. First, they all relate to how smartphones affect human attention. Second, they all use data collected from smartphones to examine the influence of smartphones. Third, in all three chapters, analyzes are made based on advanced data structuring and the use of econometric models seeking to establish causal claims when possible.

     

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    Quelle: Verbundkataloge
    Sprache: Englisch
    Medientyp: Dissertation
    Format: Online
    Weitere Identifier:
    hdl: 10419/266049
    Schriftenreihe: PhD thesis / University of Copenhagen, Department of Economics ; [222]
    Schlagworte: Mobiltelefon; Mobilkommunikation; Verhalten; Natur; Wahrnehmung; Zufriedenheit; Zeitverwendung; Soziale Gruppe; Dänemark; EU-Staaten
    Umfang: 1 Online-Ressource (circa 102 Seiten), Illustrationen
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    Dissertation, University of Copenhagen, 2021

  2. Viewing Indian Smartphone industry through the lens of SEP litigation
    an analysis
    Autor*in: Unni, V. K.
    Erschienen: August 2021
    Verlag:  Indian Institute of Management Calcutta, Calcutta

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    Sprache: Englisch
    Medientyp: Buch (Monographie)
    Format: Online
    Schriftenreihe: Working paper series / Indian Institute of Management Calcutta ; no. 867
    Schlagworte: Telekommunikationsausrüster; Mobiltelefon; Patentrecht; Standardisierung; Wettbewerbsrecht; Indien; Standard Essential Patents /SEPs; FRAND; SSOs; patent infringement; Competition Commission of India
    Umfang: 1 Online-Ressource (circa 22 Seiten)
  3. Transformacja cyfrowa organizacji i społeczeństw
    praca naukowa
    Beteiligt: Ziemba, Ewa (HerausgeberIn); Karmańska, Anna (HerausgeberIn)
    Erschienen: 2021
    Verlag:  Wydawnictwo Uniwersytetu Ekonomicznego, Katowice

    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
    B 427737
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    Beteiligt: Ziemba, Ewa (HerausgeberIn); Karmańska, Anna (HerausgeberIn)
    Sprache: Polnisch
    Medientyp: Buch (Monographie)
    Format: Druck
    ISBN: 9788378757306
    Schlagworte: Digitalisierung; Informationssystem; Betriebliches Informationssystem; E-Learning; Telekonferenz; Telearbeit; Internetnutzung; Electronic Commerce; Mobiltelefon; Polen
    Umfang: 395 Seiten, Illustrationen
  4. Machine Learning and Mobile Phone Data Can Improve the Targeting of Humanitarian Assistance
    Erschienen: 2021
    Verlag:  National Bureau of Economic Research, Cambridge, Mass

    The COVID-19 pandemic has devastated many low- and middle-income countries (LMICs), causing widespread food insecurity and a sharp decline in living standards. In response to this crisis, governments and humanitarian organizations worldwide have... mehr

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    Helmut-Schmidt-Universität, Universität der Bundeswehr Hamburg, Universitätsbibliothek
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    Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky
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    The COVID-19 pandemic has devastated many low- and middle-income countries (LMICs), causing widespread food insecurity and a sharp decline in living standards. In response to this crisis, governments and humanitarian organizations worldwide have mobilized targeted social assistance programs. Targeting is a central challenge in the administration of these programs: given available data, how does one rapidly identify the individuals and families with the greatest need? This challenge is particularly acute in the large number of LMICs that lack recent and comprehensive data on household income and wealth. Here we show that non-traditional "big" data from satellites and mobile phone networks can improve the targeting of anti-poverty programs. Our approach uses traditional survey-based measures of consumption and wealth to train machine learning algorithms that recognize patterns of poverty in non-traditional data; the trained algorithms are then used to prioritize aid to the poorest regions and mobile subscribers. We evaluate this approach by studying Novissi, Togo's flagship emergency cash transfer program, which used these algorithms to determine eligibility for a rural assistance program that disbursed millions of dollars in COVID-19 relief aid. Our analysis compares outcomes - including exclusion errors, total social welfare, and measures of fairness - under different targeting regimes. Relative to the geographic targeting options considered by the Government of Togo at the time, the machine learning approach reduces errors of exclusion by 4-21%. Relative to methods that require a comprehensive social registry (a hypothetical exercise; no such registry exists in Togo), the machine learning approach increases exclusion errors by 9-35%. These results highlight the potential for new data sources to contribute to humanitarian response efforts, particularly in crisis settings when traditional data are missing or out of date

     

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    Sprache: Englisch
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    Schriftenreihe: NBER working paper series ; no. w29070
    Schlagworte: Armutsbekämpfung; Humanitäre Hilfe; Mobilkommunikation; Mobiltelefon; Bargeldloser Zahlungsverkehr; Künstliche Intelligenz; Togo
    Umfang: 1 Online-Ressource, illustrations (black and white)
    Bemerkung(en):

    Hardcopy version available to institutional subscribers

  5. Marketing-tech - essays on personlized advertising and voice assistants
    Erschienen: 2021

    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
    B21-1272
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    Quelle: Verbundkataloge
    Sprache: Englisch
    Medientyp: Dissertation
    Format: Druck
    Schlagworte: Online-Marketing; Mobile Anwendung; Social Web; Mobiltelefon; Konsumentenverhalten; Beziehungsmarketing; Hochschulschrift
    Umfang: III, 113 Seiten, Illustrationen, Diagramme
    Bemerkung(en):

    Dissertation, Ludwig-Maximilians-Universität München, 2021

  6. Digital Addiction
    Erschienen: 2021
    Verlag:  National Bureau of Economic Research, Cambridge, Mass

    Many have argued that digital technologies such as smartphones and social media are addictive. We develop an economic model of digital addiction and estimate it using a randomized experiment. Temporary incentives to reduce social media use have... mehr

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    Helmut-Schmidt-Universität, Universität der Bundeswehr Hamburg, Universitätsbibliothek
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    Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky
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    Technische Informationsbibliothek (TIB) / Leibniz-Informationszentrum Technik und Naturwissenschaften und Universitätsbibliothek
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    Many have argued that digital technologies such as smartphones and social media are addictive. We develop an economic model of digital addiction and estimate it using a randomized experiment. Temporary incentives to reduce social media use have persistent effects, suggesting social media are habit forming. Allowing people to set limits on their future screen time substantially reduces use, suggesting self-control problems. Additional evidence suggests people are inattentive to habit formation and partially unaware of self-control problems. Looking at these facts through the lens of our model suggests that self-control problems cause 31 percent of social media use

     

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    Schriftenreihe: NBER working paper series ; no. w28936
    Schlagworte: Mediennutzung; Internetnutzung; Digitale Medien; Mobiltelefon; Social Web; Sucht; Habit-Persistence-Hypothese
    Umfang: 1 Online-Ressource, illustrations (black and white)
    Bemerkung(en):

    Hardcopy version available to institutional subscribers

  7. The Welfare Effect of a Consumer Subsidy with Price Ceilings
    The Case of Chinese Cell Phones
    Erschienen: 2021
    Verlag:  National Bureau of Economic Research, Cambridge, Mass

    Subsidies to consumers may cause firms to charge higher prices, which offsets consumer benefits from subsidies. We study a subsidy program design that mitigates such price increases by making products' eligibility for a subsidy dependent on firms'... mehr

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    Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky
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    Subsidies to consumers may cause firms to charge higher prices, which offsets consumer benefits from subsidies. We study a subsidy program design that mitigates such price increases by making products' eligibility for a subsidy dependent on firms' commitment to price ceilings. To quantify the importance of such competition for eligibility, we develop a structural model and an estimation procedure that accommodate binding pricing constraints. We find that competition for eligibility mitigates the price increases arising from the subsidy and even leads to a reduction in prices for some products. It improves consumer and total surpluses while limiting government subsidy payments

     

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    Schriftenreihe: NBER working paper series ; no. w28659
    Schlagworte: Mobiltelefon; Subvention; Preismanagement; Preisregulierung; Konsumentenrente; China
    Umfang: 1 Online-Ressource, illustrations (black and white)
    Bemerkung(en):

    Hardcopy version available to institutional subscribers

  8. Consumption Access and Agglomeration
    Evidence from Smartphone Data
    Erschienen: 2021
    Verlag:  National Bureau of Economic Research, Cambridge, Mass

    We provide new theory and evidence on the role of consumption access in understanding the agglomeration of economic activity. We combine smartphone data that records user location every 5 minutes of the day with economic census data on the location... mehr

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    We provide new theory and evidence on the role of consumption access in understanding the agglomeration of economic activity. We combine smartphone data that records user location every 5 minutes of the day with economic census data on the location of service-sector establishments to measure commuting and non-commuting trips within the Greater Tokyo metropolitan area. We show that non-commuting trips are frequent, more localized than commuting trips, strongly related to the availability of nontraded services, and occur along trip chains. Guided by these empirical findings, we develop a quantitative urban model that incorporates travel to work and travel to consume non-traded services. Using the structure of the model, we estimate theoretically-consistent measures of travel access, and show that consumption access makes a sizable contribution relative to workplace access in explaining the observed variation in residents and land prices across locations. Undertaking counterfactuals for changes in travel costs, we show that abstracting from consumption trips leads to a substantial underestimate of the welfare gains from a transport improvement (because of the undercounting of trips) and leads to a distorted picture of changes in travel patterns within the city (because of the different geography of commuting and non-commuting trips)

     

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    Schriftenreihe: NBER working paper series ; no. w28497
    Schlagworte: Konsumentenverhalten; Agglomerationseffekt; Ballungsraum; Pendelverkehr; Mobiltelefon; Japan; Tokio
    Umfang: 1 Online-Ressource, illustrations (black and white)
    Bemerkung(en):

    Hardcopy version available to institutional subscribers

  9. Measuring Commuting and Economic Activity inside Cities with Cell Phone Records
    Erschienen: 2021
    Verlag:  National Bureau of Economic Research, Cambridge, Mass

    We show how to use commuting flows to infer the spatial distribution of income within a city. A simple workplace choice model predicts a gravity equation for commuting flows whose destination fixed effects correspond to wages. We implement this... mehr

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    Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky
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    Technische Informationsbibliothek (TIB) / Leibniz-Informationszentrum Technik und Naturwissenschaften und Universitätsbibliothek
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    We show how to use commuting flows to infer the spatial distribution of income within a city. A simple workplace choice model predicts a gravity equation for commuting flows whose destination fixed effects correspond to wages. We implement this method with cell phone transaction data from Dhaka and Colombo. Model-predicted income predicts separate income data, at the workplace and residential level, and by skill group. Unlike machine learning approaches, our method does not require training data, yet achieves comparable predictive power. We show that hartals (transportation strikes) in Dhaka reduce commuting more for high model-predicted wage and high-skill commuters

     

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    Schriftenreihe: NBER working paper series ; no. w28516
    Schlagworte: Mobiltelefon; Pendelverkehr; Einkommensverteilung; Räumliche Verteilung; Gravitationsmodell; Dacca; Bangladesch; Colombo; Sri Lanka
    Umfang: 1 Online-Ressource, illustrations (black and white)
    Bemerkung(en):

    Hardcopy version available to institutional subscribers

  10. Smart(Phone) Investing?
    A within Investor-time Analysis of New Technologies and Trading Behavior
    Erschienen: 2021
    Verlag:  National Bureau of Economic Research, Cambridge, Mass

    Using transaction-level data from two German banks, we study the effects of smartphones on investor behavior. Comparing trades by the same investor in the same month across different platforms, we find that smartphones increase purchasing of riskier... mehr

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    Using transaction-level data from two German banks, we study the effects of smartphones on investor behavior. Comparing trades by the same investor in the same month across different platforms, we find that smartphones increase purchasing of riskier and lottery-type assets and chasing past returns. After the adoption of smartphones, investors do not substitute trades across platforms and buy also riskier, lottery-type, and hot investments on other platforms. Using smartphones to trade specific assets or during specific hours contributes to explain our results. Digital nudges and the device screen size do not mechanically drive our results. Smartphone effects are not transitory

     

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    Schriftenreihe: NBER working paper series ; no. w28363
    Schlagworte: Mobiltelefon; Anlageverhalten; Deutschland
    Umfang: 1 Online-Ressource, illustrations (black and white)
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    Hardcopy version available to institutional subscribers

  11. Monitoring the digital economy and electronic communications services in the Western Balkans and Turkey
    market report : 2020 third and final study report : SMART 2016/0024 : final report
    Erschienen: 2021
    Verlag:  Publications Office of the European Union, [Luxembourg]

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    Quelle: Verbundkataloge
    Sprache: Englisch
    Medientyp: Ebook
    Format: Online
    ISBN: 9789276240907
    Weitere Identifier:
    Schlagworte: Electronic Commerce; Internetnutzung; Breitbandkommunikation; IT-Infrastruktur; E-Government; Mobiltelefon; Albanien; Bosnien-Herzegowina; Kosovo; Nordmazedonien; Montenegro; Serbien; Türkei
    Umfang: 1 Online-Ressource (circa 79 Seiten), Illustrationen