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Christian Rojas - One of the best experts on this subject based on the ideXlab platform.
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how much is an Incoming Message worth estimating the call externality
Information Economics and Policy, 2017Co-Authors: Christian RojasAbstract:Abstract A feature of electronic communication markets is that a consumer's decision to join or use a communications network can generate two effects on other users of the network: a network externality and a call externality. The former effect is defined as the benefit that users receive when a new subscriber joins the network (an expanded customer base can now be reached). The existence and magnitude of this effect is important from both theoretical and policy points of view. As a consequence, its empirical importance in various network markets has been documented in the literature. A call externality is defined as the benefit that a consumer derives when receiving a Message (e.g. call) from another user, and it plays a crucial role both in the equilibrium predictions of theories of network competition and in the results of recent empirical work; however, as opposed to the network externality, no attempt has been made to quantify its empirical importance. In this paper I report results of a study designed to elicit and estimate the call externality. The data were generated using a stated-preference choice experiment designed to match theory and several characteristics of the mobile industry in Ecuador. To enhance the external validity of the results, the choice experiment was administered to over 2,500 individuals using 492 different internet-equipped government-run locations throughout the country. I find that call externalities are quite important in this market, but that their intensity depends heavily on the type of call (on-net v. off-net) as well as on the type of user (pre-paid v. post-paid). The call externality parameter for on-net calls is estimated at 0.67, while the significance of the call externality for off-net calls is significantly smaller (economically and statistically). Further, I find that the existence of call externalities in the market are mostly driven by pre-paid users.
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how much is an Incoming Message worth estimating the call externality
Social Science Research Network, 2015Co-Authors: Christian RojasAbstract:A feature of electronic communication markets is that a consumer’s decision to join or use a communications network can generate two effects on other users of the network: a network externality and a call externality. The former effect is defined as the benefit that users receive when a new subscriber joins the network (an expanded customer base can now be reached). The existence and magnitude of this effect is important from both theoretical as well as policy points of view; as a consequence, its empirical importance in various network markets has been documented in the literature. A call externality is defined as the benefit that a consumer derives when receiving a Message (e.g. call) from another user, and it plays a crucial role both in the equilibrium predictions of several theoretical models of network competition as well as for the results of recent empirical work; however, as opposed to the network externality, no attempt has been made to quantify its empirical importance. This paper reports the results of a study designed to elicit and estimate consumers’ valuation of Incoming calls (measured as the ratio between the marginal utility of an Incoming call with respect to the marginal utility of an outgoing call – a value that is, theoretically, bounded between zero and 1) in the mobile industry in Ecuador. The data was generated using a stated preference choice experiment designed to match theory as well as several characteristics of the industry in this country. To enhance the external validity of the results, the choice experiment was administered to over 2,500 individuals using 492 different internet-equipped government-run locations spread throughout the country. My main finding is that call externalities are quite important in this market, but that its intensity depends heavily on the type of call (on-net v. off-net) as well as on the type of user (pre-paid v. post-paid). The call externality parameter for on-net calls is estimated at 0.67 while the call externality for off-net calls is significantly smaller and often statistically insignificant. Further, I find that the existence of call externalities in the market are mostly driven by pre-paid users as the parameter ceases to be important when post-paid users are excluded from the estimation.
Matthias Brand - One of the best experts on this subject based on the ideXlab platform.
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is it beneficial to use internet communication for escaping from boredom boredom proneness interacts with cue induced craving and avoidance expectancies in explaining symptoms of internet communication disorder
PLOS ONE, 2018Co-Authors: Elisa Wegmann, Matthias Brand, Sina OstendorfAbstract:The use of online-communication applications including messengers (e.g. WhatsApp) or social networking services (e.g. Facebook) on the smartphone has turned into daily practice for billions of people, for example during waiting times. An increasing number of individuals show diminished control over their usage of these applications despite negative consequences in everyday life. This can be referred to as Internet-communication disorder (ICD). The current study investigated the effect of boredom proneness on symptoms of an ICD. It further examined the mediating role of cognitive and affective mechanisms, namely expectancies to avoid negative feelings online and cue-induced craving. The results of a structural equation model (N = 148) illustrate that boredom proneness is a risk factor for the development and maintenance of an ICD as it had a significant direct effect on ICD symptoms. Furthermore, boredom proneness predicted avoidance expectancies as well as cue-induced craving. Both in turn enhanced the risk of developing ICD tendencies. Moreover, both variables mediated the effect of boredom proneness on ICD and interacted among each other. In summary, the results demonstrate that people who have a higher susceptibility to experience boredom show higher expectancies to avoid negative emotions online, which promotes higher craving reactions when being confronted with specific cues (e.g. an Incoming Message), and could result in ICD tendencies.
Akira Naruse - One of the best experts on this subject based on the ideXlab platform.
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interference aware Incoming Message detection for mpi threaded progression
IEEE ACM International Symposium Cluster Cloud and Grid Computing, 2013Co-Authors: Masahiro Miwa, Kohta Nakashima, Akira NaruseAbstract:To enable overlap of computation and communication with non-blocking collective communication, it is required to progress asynchronously a sequence of communications. One of the naive implementation is to use a separate thread for communitation and run it in back of computation thread. However if the total number of threads is greater than the number of physical cores, context switches cause performance degradation of the computation thread. Simultaneous MultiThread (SMT) can be used to avoid this problem. However, commonly-used busy polling for Incoming Message detection also causes performance degradation of the computation thread. In this paper, we propose Incoming Message detection method using MONITOR/MWAIT instructions to reduce the performance degradation. Experiment results show that the performance of computation thread is improved largely compared to the busy polling method while latency is suppressed by a small increase.
Masahiro Miwa - One of the best experts on this subject based on the ideXlab platform.
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interference aware Incoming Message detection for mpi threaded progression
IEEE ACM International Symposium Cluster Cloud and Grid Computing, 2013Co-Authors: Masahiro Miwa, Kohta Nakashima, Akira NaruseAbstract:To enable overlap of computation and communication with non-blocking collective communication, it is required to progress asynchronously a sequence of communications. One of the naive implementation is to use a separate thread for communitation and run it in back of computation thread. However if the total number of threads is greater than the number of physical cores, context switches cause performance degradation of the computation thread. Simultaneous MultiThread (SMT) can be used to avoid this problem. However, commonly-used busy polling for Incoming Message detection also causes performance degradation of the computation thread. In this paper, we propose Incoming Message detection method using MONITOR/MWAIT instructions to reduce the performance degradation. Experiment results show that the performance of computation thread is improved largely compared to the busy polling method while latency is suppressed by a small increase.
Fajar Mirza Zulfi - One of the best experts on this subject based on the ideXlab platform.
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ANALISIS SMSC GATEWAY ANTARA TELKOMFLEXI DAN MOBILE 8 STUDI KASUS DI MENARA MULTIMEDIA JAKARTA PUSAT (SMSC Gateway Analysis Between TelkomFlexi and Mobile 8 Case Study in Menara Multimedia Jakarta Pusat)
Universitas Telkom, 2006Co-Authors: Fajar Mirza ZulfiAbstract:ABSTRAKSI: Teknologi telekomunikasi berperan sangat besar bagi kebutuhan hidup manusia pada jaman sekarang ini. TelkomFlexi ikut andil pula dalam memenuhi kebutuhan tersebut agar dapat memudahkan manusia dalam berkomunikasi secara mobile. Layanan dalam telekomunikasi yang paling banyak dipergunakan oleh konsumen adalah SMS ( Short Message Service ), karena kemudahan dalam pengiriman dan tarif yang relative terjangkau.Bandung merupakan kota yang berkembang cukup pesat, tidak luput pula dalam perkembangan telekomunikasi. Kandatel Bandung pun telah mengembangkan TelkomFlexi dalam memenuhi kebutuhan masyarakat agar dapat menikmati layanan telekomunikasi yang berbasiskan CDMA 2000 1x.Layanan SMS merupakan suatu gateway yang berfungsi sebagai penghubung antara penyedia layanan informasi. Gateway ini yang akan memproses jenis layanan yang diinginkan sesuai kebutuhan pelanggan, karena SMS gateway memiliki kemampuan untuk menerima dan menterjemahkan pesan dari pelanggan, kemudian mengakses database sesuai permintaan untuk dikirimkan kembali ke pelanggan dalam bentuk pesan.Analisa yang dilakukan bertujuan untuk mengetahui tentang performansi dari SMSC gateway pada TelkomFlexi dalam menagani pesan yang keluar maupun pesan yang masuk. Parameter-parameter yang akan dianalisa diantaranya adalah laju kedatangan rata-rata pesan yang menuju ke TelkomFlexi, delay time, factor utilitas sistem, throughput sistem untuk trafik dari TelkomFlexi ke operator CDMA lainnya dan untuk trafik ke TelkomFlexi, paket loss dari dan ke TelkomFlexi.Kata Kunci : ABSTRACT: Telecommunication technology has become more important as one of people needs nowadays. Telkomflexi was involved in order to fulfill that people’s need in telecommunication technology so they can mobile in communication. The services which used most by the user of telecommunication technology is SMS ( Short Message Service ), it is because it’s simple of use and it’s reachable tariff.Bandung is fast-growing developed city in Indonesia nowadays is also developing their telecommunication. Kandatel Bandung has developed Telkomflexi in order to fulfill the peoples needs of telecommunication in Bandung so they can use this CDMA 2000 1x telecommunication-based services.Short Message Service is a gateway which is it’s function as a connector between information service provider. The gateway will proceed kinds of service which needs by the customer, and then accessed the database as the request and send it again to the customer in Message form.The purpose of doing this analysis is to know the performance of SMSC gateway on Telkomflexi in handling Incoming and outcoming Messages. Some of the parameters which will be analysed are the average speed of Incoming Message on Telkomflexi, delay time, system utility factor, throughput system for traffic from and to Telkomflexi with another CDMA operator, Loss package from and to Telkomflexi.Keyword
