204,399 research outputs found
Artificial Intelligence (AI) and data science-based policy response to COVID-19 in low and middle-income countries
No full textTahir M. Nisar and Henry Agyei-Boapeah discuss how effectively low and middle-income (LMICs) can tackle the challenge of COVID-19 by designing and implementing AI and data science-based policy responses
Personalization and digital social markets: disrupting the capitalist economy
No full textTahir Nisar presents a cogent, compelling account of recent developments and disruptions within the digital economy, and particularly within the industrial and service sectors. Through an original, overarching framework rooted in the concept of personalization and its antecedents, Nisar identifies radically new forms of relationships, both economic and social, among firms and customers. These new relationships are driving major changes in commercial and industrial firms' policies and practices, and in turn, in the entire market economy. E-commerce trading, user-generated content, virtual communities, co-creation, influencer movements, FinTech, and sharing economies have strengthened the hands of consumers and have encouraged developments in cognitive technologies such as AI automation, which in turn create new ways of working and disruptions to traditional capital-labour relations. Ultimately, what emerges from this study is a picture of how digital technologies unleash forces of change that are creating new forms of social and economic sharing arrangements and new forms of social organization.For its empirical depth and and theoretical rigor, this book is essential reading for researchers and students interested in emerging, alternative forms of economics, business, and management, and particularly those interested in the digital economy and the state and future of capitalist markets
Interview with M. Tahir Kasmani
No full textM. Tahir Kasmani is an Indonesian who studied at Flinders University in 1987-1990. He completed a PhD in Social Demography, specifically focussing on rural women and development in Indonesia. The interview was conducted in English by Dr. Jemma Purdey of Deakin University and Dr. Ahmah Suaedy of the Abdurrahman Wahid Centre for Inter-faith Dialogue and Peace at Universitas Indonesia on 24 October 2014. This set comprises: an interview recording, a photograph, and a timed summary
Interview with M. Tahir Kasmani
No full textM. Tahir Kasmani is an Indonesian who studied at Flinders University in 1987-1990. He completed a PhD in Social Demography, specifically focussing on rural women and development in Indonesia. The interview was conducted in English by Dr. Jemma Purdey of Deakin University and Dr. Ahmah Suaedy of the Abdurrahman Wahid Centre for Inter-faith Dialogue and Peace at Universitas Indonesia on 24 October 2014. This set comprises: an interview recording, a photograph, and a timed summary
Investor influence in portfolio company growth and development strategy
No full textThe author empirically investigates these ideas, especially how investors, through a network of contacts, affect portfolio company growth and development
The Debt of the Nation
No full textThe debt of the nation comprises two parts, the external debt and the internal debt. After rapidly accumulating arrears of external debt in the post-sanctions period, Pakistan has had to seek re-scheduling of her external debt as part of a financing and reform package negotiated with the IMF. While re-scheduling has not been sought for the first time, the rising burden of this debt has generated a serious debate for the first time. In the heat of this debate, the heavier burden of the costlier internal debt has been nearly ignored. Although this paper takes account of the totality of the debt towards the end, its main focus is on the problem of external debt for reasons not only of its immediacy but the prospects of forced self-reliance raised by the financial and economic fall-out of the nuclear explosions of May 1998. Section II looks for the data sources and discovers that there are as many sizes of the debt as there are sources. In its latest report, the State Bank of Pakistan (SBP) characterises the economy as “highly indebted” in terms of its external debt, while the latest Economic Survey (ES) does not consider the external debt as large as it appears. Section III analyses these claims in terms of the internationally recognised debt burden indicators. In Section IV, attention is devoted to debt sustainability criteria. Section V of the paper examines the question as to how debt, which also shows access to capital required for economic growth, was allowed to become a burden over time. The last Section presents main conclusions and suggests an agenda for action.
Feridun Tahir Özaltan ile sözlü tarih görüşmesi
No full textBu görüşme, Genç Hayat Vakfı tarafından, Sokağımdan Tarih Yazıyorum başlığı altında gerçekleştirilmiştir. Görüşmeler, İstanbul'un, Beyoğlu, Fatih, Eyüp, Kağıthane, Şişli, Maltepe, Üsküdar, Tuzla, Beykoz ve Sarıyer ilçelerinde yaşayan ve bu ilçelerdeki ortaöğretim kurumlarında eğitim gören lise öğrencileri tarafından yapılmıştır. Bu proje kapsamında, Fatih ilçesinde yapılan görüşmelerin sayısı 12'dir.İstanbul ilinin Fatih ilçesine bağlı Şehremini semtinde doğan Feridun Tahir Özaltan’ın tüm hayatı Fatih’te geçer. Çocukluğunda Fatih’teki evlerin en fazla iki katlı ve bahçeli olduğunu, yerleşimin henüz yoğun olmadığı ilçede oyun oynamak için çok fazla mekanları bulunduğunu söyler. 4 tane yazlık sineması bulunan Şehremini’de ünlü sanatçıların konserler verdiğinden ve bunun dışında bazı bayram eğlencelerinin olduğundan bahseder. Adnan Menderes’in başbakanlık yaptığı dönemde gerçekleştirilen yıkım ve imar işleriyle değişen ilçenin çok kültürlü yapısına da değinir.Genç Hayat VakfıBatman, M., Aktürk, A., Akçay, E., Taşkın, D., Karagöz, B.. "Kar yağdı mı bütün mahalle toplanır, Vefa'ya boza içmeye giderdik". Sokağımdan Tarih Yazıyorum. 02 Fatih
Advanced vehicular communications through cellular and short-range networks exploiting road weather and traffic observation data
No full textAbstract
Good road infrastructure and an efficient transportation system form the foundations of modern societies. The development of road traffic systems places safety as a top priority. In recent years, weather information has developed as an increasingly important factor in road traffic safety. Icy and slippery roads have become the leading cause of road accidents in the winter season, especially in the northern regions of Europe and North America. For the safety of road traffic, the most important factors are accurate information on real-time weather and road traffic. Short-range vehicular networking based on the IEEE 802.11p (ITS-G5), Wi-Fi and visible light communications (VLC) can be utilised to provide vehicular communications. Cellular communication in the form of the fourth (4G) and fifth generation (5G) networks is currently considered as a potential system for vehicular communication. During this dissertation research, we conducted pilot measurements of both short-range and long-range wireless technologies in different realistic vehicular environments. The research was carried out at the Petäjämaa and Sodankylä airport test tracks, which are operated by the Finnish Meteorological Institute (FMI) in Sodankylä, Finland. This dissertation presents a system-level performance analysis of short-range and long-range communication, taking into account various parameters such as latency, goodput, throughput, packet loss, and location-based services. The security of vehicular communications is also essential for ensuring secure and reliable communication for road traffic safety. The communication layer in vehicular communications is vulnerable to eavesdropping, jamming, and spoofing attacks. At FMI, we also developed SafeCOP, an embedded safety feature, to provide a secure and reliable communication platform for V2V and V2I scenarios.
The outcome of this doctoral research will contribute to the improvement of the overall safety of road by demonstrating the reduced packet loss, low latency, and improved data rates while exchanging road traffic and road weather data in different vehicular communication scenarios. This thesis also assesses the performance of the implemented heterogeneous platform by facilitating higher data rates, improving network reliability through a heterogeneous approach, reducing latency, and expanding bandwidth, ultimately enhancing road traffic safety. Moreover, the long-range and short-range (hybrid) model will demonstrate network behavior in extreme winter conditions. Original papers Tahir, M. N., Mäenpää, K., & Sukuvaara, T. (2021). Wireless vehicular communication: C-ITS field measurements using ITS-G5. 2021 International Conference on Software, Telecommunications and Computer Networks (SoftCOM), 1–4. https://doi.org/10.23919/SoftCOM52868.2021.9559125 https://doi.org/10.23919/SoftCOM52868.2021.9559125 Tahir, M. N., & Katz, M. (2022). Performance evaluation of IEEE 802.11p, LTE and 5G in connected vehicles for cooperative awareness. Engineering Reports, 4(4), e12467. https://doi.org/10.1002/eng2.12467 https://doi.org/10.1002/eng2.12467 Self-archived version Tahir, M. N., Katz, M., & Javed, Z. (2021). Poster: Connected vehicles using short-range (Wi-Fi & IEEE 802.11p) and long-range cellular networks(LTE & 5G). 2021 IEEE 29th International Conference on Network Protocols (ICNP), 1–2. https://doi.org/10.1109/ICNP52444.2021.9651959 https://doi.org/10.1109/ICNP52444.2021.9651959 Tahir, M. N., & Katz, M. (2021). ITS performance evaluation in direct short-range communication (IEEE 802.11p) and cellular network(5G)(TCP vs UDP). In U. Z. A. Hamid & F. Al-Turjman (Eds.), Towards Connected and Autonomous Vehicle Highways (pp. 257–279). Springer International Publishing. https://doi.org/10.1007/978-3-030-66042-0_10 https://doi.org/10.1007/978-3-030-66042-0_10 Tahir, M. N., Leviäkangas, P., & Katz, M. (2022). Connected vehicles: V2V and V2I road weather and traffic communication using cellular technologies. Sensors, 22(3), 1142. https://doi.org/10.3390/s22031142 https://doi.org/10.3390/s22031142 Self-archived version Tahir, M. N., & Rashid, U. (2020). Demo: Intelligent transport system (ITS) assisted road weather & traffic services. 2020 IEEE Vehicular Networking Conference (VNC), 1–2. https://doi.org/10.1109/VNC51378.2020.9318377 https://doi.org/10.1109/VNC51378.2020.9318377 Tahir, M. N., Mäenpää, K., & Hippi, M. (2020). Pedestrian motion detection & pedestrian communication(P2J & V2P). 2020 International Conference on Software, Telecommunications and Computer Networks (SoftCOM), 1–3. https://doi.org/10.23919/SoftCOM50211.2020.9238338 https://doi.org/10.23919/SoftCOM50211.2020.9238338 Tahir, M. N., & Katz, M. (2021). Heterogeneous (ITS-G5 and 5G) vehicular pilot road weather service platform in a realistic operational environment. Sensors, 21(5), 1676. https://doi.org/10.3390/s21051676 https://doi.org/10.3390/s21051676 Self-archived version Tahir, M. N., Mäenpää, K., Sukuvaara, T., & Leviäkangas, P. (2021). Deployment and analysis of cooperative intelligent transport system pilot service alerts in real environment. IEEE Open Journal of Intelligent Transportation Systems, 2, 140–148. https://doi.org/10.1109/OJITS.2021.3085569 https://doi.org/10.1109/OJITS.2021.3085569 Self-archived version Tahir, M. N., Katz, M., & Rashid, U. (2021). Analysis of VANET wireless networking technologies in realistic environments. 2021 IEEE Radio and Wireless Symposium (RWS), 123–125. https://doi.org/10.1109/RWS50353.2021.9360381 https://doi.org/10.1109/RWS50353.2021.9360381 Self-archived version Tiivistelmä
Hyvä tieinfrastruktuuri ja tehokas liikennejärjestelmä muodostavat modernien yhteiskuntien perustan. Tieliikennejärjestelmien kehittäminen asettaa turvallisuuden etusijalle. Viime vuosina säätieto on kehittynyt yhä tärkeämmäksi liikenneturvallisuuden tekijäksi. Jäiset ja liukkaat tiet ovat nousseet yleisimmäksi liikenneonnettomuuksien syyksi talvikaudella erityisesti Euroopan pohjoisilla alueilla ja Pohjois-Amerikassa. Tieliikenteen turvallisuuden kannalta tärkeimmät tekijät ovat tarkka reaaliaikainen sää- ja tieliikennetieto. Lyhyen kantaman ajoneuvoverkkoa, joka perustuu IEEE 802.11p-standardiin (ITS-G5), Wi-Fi-verkkoon ja näkyvän valon tietoliikenteeseen (VLC, visible light communication), voidaan hyödyntää ajoneuvoviestinnän tarjoamiseen. Mobiiliviestintää 4G- ja 5G-verkoissa pidetään tällä hetkellä potentiaalisena ajoneuvojen viestintäjärjestelmänä. Tämän väitöstutkimuksen aikana teimme pilottimittauksia sekä lyhyen että pitkän kantaman langattomista tekniikoista erilaisissa realistisissa ajoneuvoympäristöissä. Tutkimus tehtiin Ilmatieteen laitoksen operoimilla Petäjämaan ja Sodankylän lentokentän testiradoilla. Tämä väitöskirja esittää järjestelmätason suorituskykyanalyysin lyhyen ja pitkän kantaman viestinnästä, jossa otetaan huomioon erilaiset parametrit, kuten latenssi, hyvä suorituskyky, pakettihäviö ja sijaintipohjaiset palvelut. Ajoneuvojen viestinnän turvallisuus on olennaista myös turvallisen ja luotettavan viestinnän takaamiseksi tieliikenneturvallisuuden kannalta. Ajoneuvojen viestinnän viestintäkerros on altis salakuuntelu-, häirintä- ja huijaushyökkäyksille. Ilmatieteen laitos on kehittänyt SafeCOP:n, sulautetun turvaominaisuuden, joka tarjoaa turvallisen ja luotettavan viestintäalustan V2V- ja V2I-skenaarioille.
Tämän väitöstutkimuksen tulokset edistävät tien yleisen turvallisuuden parantamista osoittamalla pienentyneen pakettihäviön, alhaisen latenssin ja parannetut tiedonsiirtonopeudet samalla kun vaihdetaan tieliikenne- ja tiesäätietoja eri ajoneuvojen viestintäskenaarioissa. Tässä opinnäytetyössä arvioidaan myös toteutetun heterogeenisen alustan suorituskykyä mahdollistamalla suurempia tiedonsiirtonopeuksia, parantamalla verkon luotettavuutta heterogeenisen lähestymistavan avulla, vähentämällä latenssia ja laajentamalla kaistanleveyttä, mikä viime kädessä lisää tieliikenneturvallisuutta. Lisäksi pitkän ja lyhyen kantaman (hybridi) malli osoittaa verkon käyttäytymistä äärimmäisissä talviolosuhteissa. Osajulkaisut Tahir, M. N., Mäenpää, K., & Sukuvaara, T. (2021). Wireless vehicular communication: C-ITS field measurements using ITS-G5. 2021 International Conference on Software, Telecommunications and Computer Networks (SoftCOM), 1–4. https://doi.org/10.23919/SoftCOM52868.2021.9559125 https://doi.org/10.23919/SoftCOM52868.2021.9559125 Tahir, M. N., & Katz, M. (2022). Performance evaluation of IEEE 802.11p, LTE and 5G in connected vehicles for cooperative awareness. Engineering Reports, 4(4), e12467. https://doi.org/10.1002/eng2.12467 https://doi.org/10.1002/eng2.12467 Rinnakkaistallennettu versio Tahir, M. N., Katz, M., & Javed, Z. (2021). Poster: Connected vehicles using short-range (Wi-Fi & IEEE 802.11p) and long-range cellular networks(LTE & 5G). 2021 IEEE 29th International Conference on Network Protocols (ICNP), 1–2. https://doi.org/10.1109/ICNP52444.2021.9651959 https://doi.org/10.1109/ICNP52444.2021.9651959 Tahir, M. N., & Katz, M. (2021). ITS performance evaluation in direct short-range communication (IEEE 802.11p) and cellular network(5G)(TCP vs UDP). In U. Z. A. Hamid & F. Al-Turjman (Eds.), Towards Connected and Autonomous Vehicle Highways (pp. 257–279). Springer International Publishing. https://doi.org/10.1007/978-3-030-66042-0_10 https://doi.org/10.1007/978-3-030-66042-0_10 Tahir, M. N., Leviäkangas, P., & Katz, M. (2022). Connected vehicles: V2V and V2I road weather and traffic communication using cellular technologies. Sensors, 22(3), 1142. https://doi.org/10.3390/s22031142 https://doi.org/10.3390/s22031142 Rinnakkaistallennettu versio Tahir, M. N., & Rashid, U. (2020). Demo: Intelligent transport system (ITS) assisted road weather & traffic services. 2020 IEEE Vehicular Networking Conference (VNC), 1–2. https://doi.org/10.1109/VNC51378.2020.9318377 https://doi.org/10.1109/VNC51378.2020.9318377 Tahir, M. N., Mäenpää, K., & Hippi, M. (2020). Pedestrian motion detection & pedestrian communication(P2J & V2P). 2020 International Conference on Software, Telecommunications and Computer Networks (SoftCOM), 1–3. https://doi.org/10.23919/SoftCOM50211.2020.9238338 https://doi.org/10.23919/SoftCOM50211.2020.9238338 Tahir, M. N., & Katz, M. (2021). Heterogeneous (ITS-G5 and 5G) vehicular pilot road weather service platform in a realistic operational environment. Sensors, 21(5), 1676. https://doi.org/10.3390/s21051676 https://doi.org/10.3390/s21051676 Rinnakkaistallennettu versio Tahir, M. N., Mäenpää, K., Sukuvaara, T., & Leviäkangas, P. (2021). Deployment and analysis of cooperative intelligent transport system pilot service alerts in real environment. IEEE Open Journal of Intelligent Transportation Systems, 2, 140–148. https://doi.org/10.1109/OJITS.2021.3085569 https://doi.org/10.1109/OJITS.2021.3085569 Rinnakkaistallennettu versio Tahir, M. N., Katz, M., & Rashid, U. (2021). Analysis of VANET wireless networking technologies in realistic environments. 2021 IEEE Radio and Wireless Symposium (RWS), 123–125. https://doi.org/10.1109/RWS50353.2021.9360381 https://doi.org/10.1109/RWS50353.2021.9360381 Rinnakkaistallennettu versio Academic dissertation to be presented with the assent of the Doctoral Programme Committee of Information Technology and Electrical Engineering of the University of Oulu for public defence in the Oulun Puhelin auditorium (L5), Linnanmaa, on 16 August 2024, at 12 noonAbstract
Good road infrastructure and an efficient transportation system form the foundations of modern societies. The development of road traffic systems places safety as a top priority. In recent years, weather information has developed as an increasingly important factor in road traffic safety. Icy and slippery roads have become the leading cause of road accidents in the winter season, especially in the northern regions of Europe and North America. For the safety of road traffic, the most important factors are accurate information on real-time weather and road traffic. Short-range vehicular networking based on the IEEE 802.11p (ITS-G5), Wi-Fi and visible light communications (VLC) can be utilised to provide vehicular communications. Cellular communication in the form of the fourth (4G) and fifth generation (5G) networks is currently considered as a potential system for vehicular communication. During this dissertation research, we conducted pilot measurements of both short-range and long-range wireless technologies in different realistic vehicular environments. The research was carried out at the Petäjämaa and Sodankylä airport test tracks, which are operated by the Finnish Meteorological Institute (FMI) in Sodankylä, Finland. This dissertation presents a system-level performance analysis of short-range and long-range communication, taking into account various parameters such as latency, goodput, throughput, packet loss, and location-based services. The security of vehicular communications is also essential for ensuring secure and reliable communication for road traffic safety. The communication layer in vehicular communications is vulnerable to eavesdropping, jamming, and spoofing attacks. At FMI, we also developed SafeCOP, an embedded safety feature, to provide a secure and reliable communication platform for V2V and V2I scenarios.
The outcome of this doctoral research will contribute to the improvement of the overall safety of road by demonstrating the reduced packet loss, low latency, and improved data rates while exchanging road traffic and road weather data in different vehicular communication scenarios. This thesis also assesses the performance of the implemented heterogeneous platform by facilitating higher data rates, improving network reliability through a heterogeneous approach, reducing latency, and expanding bandwidth, ultimately enhancing road traffic safety. Moreover, the long-range and short-range (hybrid) model will demonstrate network behavior in extreme winter conditions.Tiivistelmä
Hyvä tieinfrastruktuuri ja tehokas liikennejärjestelmä muodostavat modernien yhteiskuntien perustan. Tieliikennejärjestelmien kehittäminen asettaa turvallisuuden etusijalle. Viime vuosina säätieto on kehittynyt yhä tärkeämmäksi liikenneturvallisuuden tekijäksi. Jäiset ja liukkaat tiet ovat nousseet yleisimmäksi liikenneonnettomuuksien syyksi talvikaudella erityisesti Euroopan pohjoisilla alueilla ja Pohjois-Amerikassa. Tieliikenteen turvallisuuden kannalta tärkeimmät tekijät ovat tarkka reaaliaikainen sää- ja tieliikennetieto. Lyhyen kantaman ajoneuvoverkkoa, joka perustuu IEEE 802.11p-standardiin (ITS-G5), Wi-Fi-verkkoon ja näkyvän valon tietoliikenteeseen (VLC, visible light communication), voidaan hyödyntää ajoneuvoviestinnän tarjoamiseen. Mobiiliviestintää 4G- ja 5G-verkoissa pidetään tällä hetkellä potentiaalisena ajoneuvojen viestintäjärjestelmänä. Tämän väitöstutkimuksen aikana teimme pilottimittauksia sekä lyhyen että pitkän kantaman langattomista tekniikoista erilaisissa realistisissa ajoneuvoympäristöissä. Tutkimus tehtiin Ilmatieteen laitoksen operoimilla Petäjämaan ja Sodankylän lentokentän testiradoilla. Tämä väitöskirja esittää järjestelmätason suorituskykyanalyysin lyhyen ja pitkän kantaman viestinnästä, jossa otetaan huomioon erilaiset parametrit, kuten latenssi, hyvä suorituskyky, pakettihäviö ja sijaintipohjaiset palvelut. Ajoneuvojen viestinnän turvallisuus on olennaista myös turvallisen ja luotettavan viestinnän takaamiseksi tieliikenneturvallisuuden kannalta. Ajoneuvojen viestinnän viestintäkerros on altis salakuuntelu-, häirintä- ja huijaushyökkäyksille. Ilmatieteen laitos on kehittänyt SafeCOP:n, sulautetun turvaominaisuuden, joka tarjoaa turvallisen ja luotettavan viestintäalustan V2V- ja V2I-skenaarioille.
Tämän väitöstutkimuksen tulokset edistävät tien yleisen turvallisuuden parantamista osoittamalla pienentyneen pakettihäviön, alhaisen latenssin ja parannetut tiedonsiirtonopeudet samalla kun vaihdetaan tieliikenne- ja tiesäätietoja eri ajoneuvojen viestintäskenaarioissa. Tässä opinnäytetyössä arvioidaan myös toteutetun heterogeenisen alustan suorituskykyä mahdollistamalla suurempia tiedonsiirtonopeuksia, parantamalla verkon luotettavuutta heterogeenisen lähestymistavan avulla, vähentämällä latenssia ja laajentamalla kaistanleveyttä, mikä viime kädessä lisää tieliikenneturvallisuutta. Lisäksi pitkän ja lyhyen kantaman (hybridi) malli osoittaa verkon käyttäytymistä äärimmäisissä talviolosuhteissa
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