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Pamungkas, Wahyu, Nunung Sadtomo, and Erlinda Febrianingtyas. "Analisis Kualitas Jaringan Akses Tembaga Terhadap Layanan Speedy Studi Kasus Di PT.Telkom,Tbk Divisi Access Site Operation Purwokerto." JURNAL INFOTEL - Informatika Telekomunikasi Elektronika 4, no. 2 (November 10, 2012): 23. http://dx.doi.org/10.20895/infotel.v4i2.105.
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The development of fast evolving telecomunication technologies starting from communications cable to wireless communications. One of the communication cable for data is a technology Asymetric Digital Subscriber Line (ADSL). ADSL technology is an access technology that enable data communications, voice and video simultaneously at cooper access network media. Speedy service is one example of the use of ADSL technology. Telkom Speedy offers internet access speeds ranging from 384 Kbps for downstream speed and 3 Mbps for upstream speed. Speed of access internet is affected by the quality of the network. Parameters that effect the quality of network are : attenuation, Signal to Noise Ratio (SNR), Packet Loss, Bit Error Ratio (BER), jitter and time to life (TTL). In this study analysis of network quality affected by these parameters were measured advance to the quality of the network by using the EMBASSY software, while the perform measurements speedtest by using internal web aplications PT.Telkom,Tbk. After measurement is complete then performed the analysis for determine network quality. Based on observations can be known on the upload and download speed the capacity of 384 Kbps, 1024 Kbps and 3 Mbps. Of these three on capacity can be known to the average percentage of the upload speed is found to be 83,33 %, while the percentage of download speeds is found to be 76,67 %
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Ferrers, Richard Anthony. "Enhancing NBN's Value." Journal of Telecommunications and the Digital Economy 8, no. 2 (May 15, 2020): 1–17. http://dx.doi.org/10.18080/jtde.v8n2.252.
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The NBN, Australia’s National Broadband Network, is nearing its 2020 completion. The value of the NBN depends on what you compare it to. While Australia’s broadband has significantly improved over the last ten years, it is useful to compare Australia’s NBN with similar activity in the OECD and with Australia’s Top 10 Trading Partners to gain a richer understanding of NBN’s value. Australia’s broadband performance compares poorly with other OECD countries on download speed, especially over 100 Mbps download subscriptions and average download speed. However, imminent release in May 2020 of new NBN gigabit pricing could significantly improve Australia’s world ranking on this average download speed comparison. Recommendations for improving NBN’s value beyond speed are made, including encouraging affordable gigabit NBN services; ongoing NBN upgrades; encouraging NBN use; focussing NBN Corporate Reporting on customer satisfaction and ongoing international comparison.
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Manlove, Jacob L., Aaron M. Shew, and Oladipo S. Obembe. "Arkansas producers value upload speed more than download speed for precision agriculture applications." Computers and Electronics in Agriculture 190 (November 2021): 106432. http://dx.doi.org/10.1016/j.compag.2021.106432.
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Nam, Youngju, Hyunseok Choi, Yongje Shin, Euisin Lee, and Eun-Kyu Lee. "Adaptive Content Precaching Scheme Based on the Predictive Speed of Vehicles in Content-Centric Vehicular Networks." Sensors 21, no. 16 (August 9, 2021): 5376. http://dx.doi.org/10.3390/s21165376.
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Content-Centric Vehicular Networks (CCVNs) are considered as an attractive technology to efficiently distribute and share contents among vehicles in vehicular environments. Due to the large size of contents such as multimedia data, it might be difficult for a vehicle to download the whole of a content within the coverage of its current RoadSide Unit (RSU). To address this issue, many studies exploit mobility-based content precaching in the next RSU on the trajectory of the vehicle. To calculate the amount of the content precaching, they use a constant speed such as the current speed of the vehicle requesting the content or the average speed of vehicles in the next RSU. However, since they do not appropriately reflect the practical speed of the vehicle in the next RSU, they could incorrectly calculate the amount of the content precaching. Therefore, we propose an adaptive content precaching scheme (ACPS) that correctly estimates the predictive speed of a requester vehicle to reflect its practical speed and calculates the amount of the content precaching using its predictive speed. ACPS adjusts the predictive speed to the average speed starting from the current speed with the optimized adaptive value. To compensate for a subtle error between the predictive and the practical speeds, ACPS appropriately adds a guardband area to the precaching amount. Simulation results verify that ACPS achieves better performance than previous schemes with the current or the average speeds in terms of the content download delay and the backhaul traffic overhead.
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Zhang, Ming, and Jin Qiu Yang. "Idle Users Management for Improved BitTorrent Performance." Key Engineering Materials 439-440 (June 2010): 859–64. http://dx.doi.org/10.4028/www.scientific.net/kem.439-440.859.
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In the past few years, there have been tremendous interest in the peer-to-peer(P2P) content delivery. This communication paradigm dramatically increases the traffic over inter-ISP links. In particular, BitTorrent(BT), the most popular P2P application, generates a huge amount of traffic on the Internet. BitTorrent’s performance is limited by the fact that typical internet users have much lower upload bandwidths than download bandwidths. This results in the overall average download speed of a BitTorrent-like file download system to be bottle-necked by the much lower upload capacity. We think about to utilize idle users’ spare upload capacity to largely improve the download speed beyond what can be achieved in a conventional BitTorrent network. In this paper, we design a system that is completely compatible with the already existing clients who conform to the BitTorrent protocol, at the same time, we analyze this system’s steady-state performance and present simulation results.
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Wu, Qing Xiang, Jian Mei Shuai, and Xiao Shuang Lu. "A Multi-Node Co-Allocation Parallel Downloading Algorithm." Applied Mechanics and Materials 58-60 (June 2011): 1590–95. http://dx.doi.org/10.4028/www.scientific.net/amm.58-60.1590.
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In distributed data storage, a particular dataset can reside at multiple locations in order to get high availability .Thus, the dataset can be downloaded in parallel from multiple nodes.Throughput between server and client changes dynamically, so the downloading speed can vary unpredictably. A dynamic parallel downloading algorithm based on measurement of bandwidth and bandwidth prediction is produced in this paper and server caching is adopted in order to improve downloading speed. The algorithm dynamically adjusts downloading of the last block to make parallel downloading from multiple servers end almost simultaneously. With this approach, the download time is reduced and the robustness of the downloading system is improved. Besides, the algorithm not only avoids complicated server selecting mechanism, but also improves load balance of the servers.
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Sundar, S. Shyam, and Carson B. Wagner. "The World Wide Wait: Exploring Physiological and Behavioral Effects of Download Speed." Media Psychology 4, no. 2 (May 2002): 173–206. http://dx.doi.org/10.1207/s1532785xmep0402_04.
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Jones, Joshua P., Kurama Okubo, Tim Clements, and Marine A. Denolle. "SeisIO: A Fast, Efficient Geophysical Data Architecture for the Julia Language." Seismological Research Letters 91, no. 4 (April 29, 2020): 2368–77. http://dx.doi.org/10.1785/0220190295.
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Abstract SeisIO for the Julia language is a new geophysical data framework that combines the intuitive syntax of a high-level language with performance comparable to FORTRAN or C. Benchmark comparisons against recent versions of popular programs for seismic data download and analysis demonstrate significant improvements in file read speed and orders-of-magnitude improvements in memory overhead. Because the Julia language natively supports parallel computing with an intuitive syntax, we benchmark test parallel download and processing of multiweek segments of contiguous data from two sets of 10 broadband seismic stations, and find that SeisIO outperforms two popular Python-based tools for data downloads. The current capabilities of SeisIO include file read support for several geophysical data formats, online data access using a variety of services, and optimized versions of several common data processing operations. Tutorial notebooks and extensive documentation are available to improve the user experience. As an accessible example of performant scientific computing for the next generation of researchers, SeisIO offers ease of use and rapid learning without sacrificing computational efficiency.
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Mohanad Ali Meteab Al-Obaidi, Basim Jamil Ali, and Bassam Alkindy. "A comparative Study of the Evolution Different Mobile Generations for Wireless Communication." journal of the college of basic education 26, no. 109 (April 2, 2022): 488–97. http://dx.doi.org/10.35950/cbej.v26i109.5352.
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The mobile communication system has revolutionized human life and made the world a small village through communications and data transmission in the form of voice calls, messages or videos with very high download speeds. This paper discusses the different communication technologies for mobile phone generations, starting from the first generation of primitive to the second and third generation, in terms of mobile voice technologies, then the fourth generation as signs of rapid data download speed started, as the speed of connection to the fourth generation networks is ten times higher than the generation connection The third, which led to the improvement of data traffic in the communications network, the high mobility recipe for people who make calls, in addition to improving global system management and improving voice quality, then the great revolution in the fifth generation that is characterized by covering all geographical areas with an increase in the high-frequency spectrum, which is characterized at high frequencies starting from 6 GHz to 100 GHz, in addition to comparing all these generations through illustrative tables.
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Park, Yong-Hyeon, Jahwan Koo, and Ung-Mo Kim. "Improving File Download Speed Based on the Selection of Healthy Peers in BitTorrent." Journal of Korean Institute of Information Technology 16, no. 1 (January 31, 2018): 133–43. http://dx.doi.org/10.14801/jkiit.2018.16.1.133.
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Gao, Ning, Fan Zheng, Xin Wang, Xiaoxue Jiang, and Jun Lin. "High-speed download of seismographs using private cloud technology and a proportional integral derivative controller." Instrumentation Science & Technology 44, no. 1 (July 15, 2015): 12–22. http://dx.doi.org/10.1080/10739149.2015.1067821.
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Lelkes, Yphtach. "A Bigger Pie: The Effects of High-Speed Internet on Political Behavior." Journal of Computer-Mediated Communication 25, no. 3 (May 1, 2020): 199–216. http://dx.doi.org/10.1093/jcmc/zmaa002.
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Abstract The impact of broader media choice on political behavior is central to the study of political communication. The availability of high-speed Internet, which allows for high bandwidth media on demand, has given consumers virtually unlimited information choices. Most research assumes that the time spent online is fixed; therefore, broader media choice decreases news consumption, political knowledge, and turnout, especially among the politically uninterested. In this article, I explore another possibility: as Internet quality improves, we spend more time online and consume more information, which subsequently increases knowledge and turnout. To test this possibility, I link geocoded Internet download speed data with survey data. A series of studies indicate that higher quality Internet increases political information search, news consumption, and political knowledge, although perhaps not turnout. This work suggests that our assumption of trade-offs between news consumption and entertainment may need reconsideration.
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Lencse, Gábor, Ákos Kovács, and Keiichi Shima. "Gaming with the Throughput and the Latency Benchmarking Measurement Procedures of RFC 2544." International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems 9, no. 2 (June 10, 2020): 10. http://dx.doi.org/10.11601/ijates.v9i2.288.
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In this paper, we investigate three potential issues of the benchmarking measurement procedures defined in RFC 2544 and also used in RFC 5180 and RFC 8219. One of them is the lack of proper timeout usage. We use a Linux box, which can selectively delay a specified ratio of the packets. Using carefully selected parameters based on our preliminary measurements, we demonstrate that the experienced speed of the HTTP download is much less, than what could have been expected on the basis of the throughput results of the RFC 2544 tests. The other critical issue is the strict, absolutely zero loss criterion. We use a Linux box, which drops a specified small ratio of the packets. Whereas the RFC 2544 throughput results tend to be zero, the experienced speed of the HTTP download is quite good. The third problem is the lack of requirement for statistically relevant number of tests in the RFC 2544 benchmarking procedures. We demonstrate its severity with the latency benchmarking procedure defined in RFC 2544 and kept unchanged in RFC 5180 but redefined in RFC 8219.
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Хаджиева, Л. К., М. Р. Хаджиев, and И. У. Хашумов. "PROSPECTS FOR THE IMPLEMENTATION OF 5G TECHNOLOGY AND INTERACTION WITH THE “SMART HOUSE” SYSTEM." Вестник ГГНТУ. Технические науки, no. 4(26) (December 28, 2021): 21–32. http://dx.doi.org/10.34708/gstou.2021.32.99.003.
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В статье рассматриваются вопросы, связанные с внедрением и реализацией технологии 5G, а также взаимодействие 5G с системой «Умный дом». Пятое поколение сетей, является следующим за 4G и 3G, и, как и при переходе от 3G к 4G, мы получаем гораздо более высокие скорости, чем на любом из технологий, которые были раньше. Теоретически максимальная скорость загрузки, которую ожидают от 5G, равна 10-50 Гбит/с, но мы еще не достигли этого уровня, по имеющимся данным, пиковая скорость загрузки уже достигла 753 Мбит / с, а в некоторых сетях утверждается, что скорости более 1 Гбит/с уже наблюдаются.Следующее поколение телекоммуникационных сетей (пятое поколение или 5G) начало выходить на рынок в конце 2018 года и будет продолжать расширяться по всему миру.Ожидается, что помимо повышения скорости эта технология откроет огромную экосистему 5G IoT (Интернет вещей), в которой сети могут обслуживать коммуникационные потребности миллиардов подключенных устройств с правильным компромиссом между скоростью, задержкой и стоимостью. The article discusses issues related to the introduction and implementation of 5G technology, as well as the interaction of 5G with the “Smart Home” system. The fifth generation of networks is next to 4G and 3G, and as with the transition from 3G to 4G, we are getting much faster speeds than any of the technologies that came before. Theoretically, the maximum download speed expected from 5G is 10-50 Gbps, but we have not yet reached this level, according to the available data, the peak download speed has already reached 753 Mbps, and in some networks it is claimed to be over 1 Gbps.The next generation of telecommunications networks (fifth generation or 5G) began to hit the market at the end of 2018 and will continue to expand around the world.In addition to increasing speed, this technology is expected to open up a huge 5G IoT (Internet of Things) ecosystem in which networks can serve the communication needs of billions of connected devices with the right trade-off between speed, latency and cost.
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Yang, Jun, Wei Ping Zhang, Ping Ping Shu, Xiao Jun Wang, Ga Zhao, and Heng Fen Yang. "The Design and Implementation of a High-Speed Parallel AES Crypto-Chip." Advanced Materials Research 468-471 (February 2012): 1721–25. http://dx.doi.org/10.4028/www.scientific.net/amr.468-471.1721.
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This paper direct to security and real-time requirements in high-speed network transmission processing, based on SOPC technology, design a High throughput AES encryption/ decryption processing unit with pipelining. The design goal is to optimize the hardware structure and improve the throughput, S-box design and parallel processing structure. Compared with traditional AES crypto-chip has faster rate with encryption and less consumption of resources advantages. This design adopts VHDL hardware description language, use Quartus II 8.0 for the synthesis and routing, and this processing unit is packaged an independent IP core, attached to the Altera provided the Nios II system, finally download and test validation on the DE2 development platform.
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Smirnova, I., E. Lipenbergs, and V. Bobrovs. "Mathematical Algorithm for Processing Measurement Results of Internet Access Service in the Scope of Net Neutrality." Latvian Journal of Physics and Technical Sciences 55, no. 3 (June 1, 2018): 63–69. http://dx.doi.org/10.2478/lpts-2018-0022.
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Abstract Since Regulation (EU) 2015/2120 of the European Parliament and of the Council came into force, Internet service providers have to fulfill various additional requirements in order to guarantee access to the open internet and provide transparent information to the end-users. Of the utmost importance is to ensure achievable, meaningful and comparable results of the internet quality indicators, particularly upload and download speed values. Regulation (EU) 2015/2120 stipulates that specific speeds should be indicated in the contracts: for fixed internet access service those are maximum, minimum, normally available and advertised speed and for mobile internet access service – estimated maximum and advertised speed. However, there are no common methods put in place to calculate required speed indicators that can lead to a large amount of noncomparable and unreviewable information and create difficulties for internet providers to describe quality indicators. Within the framework of the present research, a mathematical estimation algorithm has been elaborated and applied in order to ensure that required quality parameters are represented objectively and that they are intercomparable among different internet service providers. Unified calculation principle would foster end-user awareness of the meaning of quality indicators and also of the quality of received internet services. It would also facilitate the indication of the required information for internet service providers.
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Rusmiyati, Anna. "Impact Of Media QR Code To Grow The Interest Of Students Learn Sociology In Social Conflict Materials." Metafora: Education, Social Sciences and Humanities Journal 3, no. 2 (December 1, 2019): 1. http://dx.doi.org/10.26740/metafora.v3n2.p1-16.
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The existence of innovative learning allows dynamism in learning. The presence of technology in the world of education is to help teachers and students to obtain the speed of information, create innovative learning, and facilitate all teaching and learning activities. One result of technology that can be utilized in learning is the presence of a smartphone. On the smartphone, there is a QR Code media that can be downloaded via Google Play. One of the sociological materials, namely social conflict is the choice to be presented with QR Code media. The implementation is that students from one of the groups download the QR Code on their smartphone so that they can scan the assignments given by the teacher in the form of barcodes. Previously the teacher had prepared questions about the subject of social conflict in the form of barcodes. Gurupun also download a barcode generator on a smartphone to be able to write the problem, then the final result in the form of a barcode. The results in the form of barcodes are then printed. Then students do the scanning on the printed barcode and the task or problem to appear will appear. Completion of tasks is done in groups so as to accelerate the process. Learning with QR Code media also includes 21st century educational abilities, including literacy, strengthening character education, and 4C (critical, communicative, collaborative, and creative). By using the QR Code media it turns out to be very effective in fostering students' interest in studying sociology. Keywords : Innovative learning, QR Code, Barcode Generator, Scaning, Social Conflict
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Fawaid, Ibnu Haris, Diah Risqiwati, and Denar Regata Akbi. "Rancang Bangun Mirror Repository Linux Menggunakan Load-Balanced Mirror Service System (LMSS) Pada Private Cloud." Jurnal Repositor 2, no. 1 (January 4, 2020): 35. http://dx.doi.org/10.22219/repositor.v2i1.327.
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Abstrak Meningkatnya permintaan pembaharuan aplikasi berbasis open source karena seiring meningkatnya jumlah pengguna sistem operasi Linux, oleh karenanya ketika banyak pengguna linux yang melakukan permintaan pembaharuan aplikasi menyebabkan lambatnya kecepatan unduh dan membutuhkan waktu lama. Salah satu solusinya yaitu dengan membuat mirror repository linux agar memudahkan dan menawarkan koneksi pengguna yang lebih baik. Namun demikian, suatu saat ketika semakin bertambah jumlah pengguna mirror tersebut akan mengalami penurunan kualitas download hingga dapat mengalami down, sehingga tidak dapat melayani permintaan pembaharuan pengguna dengan baik. Penelitian ini bertujuan untuk merancang dan membangun Mirror Repository Linux dengan menggunakan Load-balanced Mirror Service System (LMSS) dengan mengintegrasikan beberapa MIrror Server yang dibangun secara generate melalui Manage Large Network (MLN), dengan pembagian beban menggunakan Linux Virtual Server (LVS) pada metode Network Address Translation (NAT). Sehingga beban permintaan dari client dapat ditangani Mirror Server secara bersama – sama. Dengan demikian, rata – rata waktu download dapat berkurang sebanyak 17,2 % daripada menggunakan Single Server.AbstractThe increasing demand for open source-based application updates is due to the increasing number of users of Linux operating systems, therefore when many Linux users who request an application update cause slow download speed and takes a long time. One solution is to create Mirror Repository Linux in order to facilitate and offer better user connections. However, a time when the number of mirror users will decrease the quality of download until it can down, so it can not serve user renewal request well. This research aims to design and build linux mirror repositories by using Load-balanced Mirror Service System (LMSS) by integrating multiple Mirror Server generated via Manage Large Network (MLN), with load sharing using Linux Virtual Server (LVS) Network Address Translation (NAT). LMSS there is a Director Server as a counter / load manager that passes on the server, which will be forwarded to the destination server. So that the request load from the client can be handled Mirror Server together. Thus, the average download time can be reduced by 17.2% rather than using a single server.
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Du, Ru Jian, Jun Liu, and Yan Song Li. "Research of DSP Code Generation Based on Matlab-DSP Integrated Design." Applied Mechanics and Materials 551 (May 2014): 244–47. http://dx.doi.org/10.4028/www.scientific.net/amm.551.244.
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The super capacitor can effectively prolong the operation of the energy storage system, improve its economic performance and power output capacity. But the design of the super capacitor is not perfect, the design method is also very troublesome.In this paper, through studying the different implementations of Matlab - DSP integrated design methods,I tried to find the optimal method to achieve the most simple and rapid Matlab - DSP integrated design. Build models in the Simulink, complete the design of the model, and convert it to DSP assembly language and download to the target board. The main process of this method is that the above steps. Apply this method in the design of the super capacitor , we can greatly speed up the development speed.
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Yakovliev, M., and K. Filonenko. "EFFECTS OF LOADING SPEED ON THE SITE TRAFFIC CONVERSION." Системи управління, навігації та зв’язку. Збірник наукових праць 5, no. 57 (October 30, 2019): 92–94. http://dx.doi.org/10.26906/sunz.2019.5.092.
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The subject of this article is the impact of site loading speed to increase user conversions. The goal is to determine what is the optimal site loading speed for users and further site optimization. Tasks: identify and optimize the components that take the longest load time. The methods used are: optimization of the server part of the site; Configuring Apache and Ngix Server Using server side gzip compression Using CDNs to download popular JavaScript libraries server-side caching settings; database optimization; optimization of TCP, TLS, HTTP / 2; client side optimization. The following results are obtained. Using the methods described above, on the example of a working draft, it was possible to optimize the site loading speed by 40%. Taking statistics for the period of 7 days, with the same amount of traffic, the conversion of users to customers increased from 7% to 15%. The number of failures on the first visit to the site decreased by 30%. Conclusions. In the course of work, the correlation between the speed of loading the site and the conversion of users to customers was confirmed. By optimizing the speed of loading the site, it was possible to increase the conversion of users by 2 times and reduce the percentage of failure on the first visit to the site.
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Messerli, A., N. B. Karlsson, and A. Grinsted. "Brief Communication: 2014 velocity and flux for five major Greenland outlet glaciers using ImGRAFT and Landsat-8." Cryosphere Discussions 8, no. 6 (December 20, 2014): 6235–50. http://dx.doi.org/10.5194/tcd-8-6235-2014.
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Abstract. This study presents average velocity fields, mass flux estimates and central flowline profiles for five major Greenland outlet glaciers; Jakobshavn Isbræ, Nioghalvfjerdsbræ, Kangerdlugssuaq, Helheim and Petermann glaciers, spanning the period (August) 2013–(September) 2014. The results are produced by the feature tracking toolbox, ImGRAFT using Landsat-8, panchromatic data. The resulting velocity fields agree with the findings of existing studies. Furthermore, our results show an unprecedented speed of over 50 m day−1 at Jakobshavn Isbræ as it continues to retreat. All the processed data will be freely available for download at http://imgraft.glaciology.net.
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Sari, Ira Puspita, and Sukri Sukri. "Analisis Penerapan Metode Antrian Hirarchical Token Bucket untuk Management Bandwidth Jaringan Internet." Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) 2, no. 2 (June 30, 2018): 522–29. http://dx.doi.org/10.29207/resti.v2i2.458.
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Internet is one of the needs of the community, especially among education and academics such as universities. The high level of internet users is not comparable with the facilities owned by an agency, this makes the internet network manager in Higher Education feel difficult. The cause of the problem that is always a problem is the speed and internet connection is always disjointed, resulting in the slow loading process data while browsing, both at the time of download and at the time of upload. To make internet users in campus area balanced and stable then need bandwidth management based on traffic usage of internet path better. Bandwidth management that can stabilize traffic lanes and equal bandwidth distribution, it can use bandwidth management by Hierarchical Token Bucket (HTB) method. The calculation result in HTB method testing through file download, the average value obtained by TIPHON category standard for throughtput value index is 2 with "Medium" category, delay parameter index is 4 with "Very Good" category, jitter parameter index is 3 with the "Good" category and the packet loss parameter index is 4 with the "Very Good" category.
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Hao, Zhi Feng, Ze Bin Zhang, Zhao Quan Cai, and Han Huang. "An Improved Crawler Algorithm Based on Hierarchical Structure Preservation." Key Engineering Materials 474-476 (April 2011): 2120–24. http://dx.doi.org/10.4028/www.scientific.net/kem.474-476.2120.
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This paper proposes an improved web crawler algorithm to climb more useful information since the basic web crawler algorithm is low-efficiency and easy to climb useless repeated information. By the proposed algorithm, the website urls are hierarchical saved to store websites overall topology, which will make crisscross complex web URL system from a graphic structure into a tree structure. The actual website BBS experiments show that the algorithm is much better than the basic web crawler algorithm in crawling speed and download information such as the usefulness of baking. Furthermore, it provides a performing structure mode for the increment crawler algorithm.
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Yang, Xiao-Peng. "Evaluation Model and Approximate Solution to Inconsistent Max-Min Fuzzy Relation Inequalities in P2P File Sharing System." Complexity 2019 (March 14, 2019): 1–11. http://dx.doi.org/10.1155/2019/6901818.
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Considering the requirement of biggest download speed of the terminals, a BitTorrent-like Peer-to-Peer (P2P) file sharing system can be reduced into a system of max-min fuzzy relation inequalities. In this paper we establish an evaluation model by the satisfaction degree, for comparing two arbitrary potential solutions of such system. Besides, based on the evaluation model, concept of approximate solution is defined. It is indeed a potential solution with highest satisfaction degree. Furthermore, effective algorithm is developed for obtaining the approximate solutions to inconsistent system. Numerical examples are provided to illustrate our proposed model and algorithm.
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Rich, Robert. "Inverting the Truck-Drone Network Problem to Find Best Case Configuration." Advances in Operations Research 2020 (January 22, 2020): 1–10. http://dx.doi.org/10.1155/2020/4053983.
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Many industries are looking for ways to economically use truck/rail/ship fitted with drone technologies to augment the “last mile” delivery effort. While drone technologies abound, few, if any studies look at the proper configuration of the drone based on significant features of the problem: delivery density, operating area, drone range, and speed. Here, we first present the truck-drone problem and then invert the network routing problem such that the best case drone speed and range are fitted to the truck for a given scenario based on the network delivery density. By inverting the problem, a business can quickly determine the drone configuration (proper drone range and speed) necessary to optimize the delivery system. Additionally, we provide a more usable version of the truck-drone routing problem as a mixed integer program that can be easily adopted with standardized software used to solve linear programming. Furthermore, our computational metaheuristics and experiments conducted in support of this work are available for download. The metaheuristics used herein surpass current best-in-class algorithms found in literature.
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Erbe, Christine, David Peel, Joshua N. Smith, and Renee P. Schoeman. "Marine Acoustic Zones of Australia." Journal of Marine Science and Engineering 9, no. 3 (March 19, 2021): 340. http://dx.doi.org/10.3390/jmse9030340.
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Underwater sound is modelled and mapped for purposes ranging from localised environmental impact assessments of individual offshore developments to large-scale marine spatial planning. As the area to be modelled increases, so does the computational effort. The effort is more easily handled if broken down into smaller regions that could be modelled separately and their results merged. The goal of our study was to split the Australian maritime Exclusive Economic Zone (EEZ) into a set of smaller acoustic zones, whereby each zone is characterised by a set of environmental parameters that vary more across than within zones. The environmental parameters chosen reflect the hydroacoustic (e.g., water column sound speed profile), geoacoustic (e.g., sound speeds and absorption coefficients for compressional and shear waves), and bathymetric (i.e., seafloor depth and slope) parameters that directly affect the way in which sound propagates. We present a multivariate Gaussian mixture model, modified to handle input vectors (sound speed profiles) of variable length, and fitted by an expectation-maximization algorithm, that clustered the environmental parameters into 20 maritime acoustic zones corresponding to 28 geographically separated locations. Mean zone parameters and shape files are available for download. The zones may be used to map, for example, underwater sound from commercial shipping within the entire Australian EEZ.
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Oh, Se-Won, Seung-Joon Seok, and Min-Soo Jung. "An improvement for applets download speed using transaction buffer based on RAM memory of Java Card system using IC chip." IEICE Electronics Express 8, no. 10 (2011): 705–9. http://dx.doi.org/10.1587/elex.8.705.
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Chen, Meixu, Dominik Fahrner, Daniel Arribas-Bel, and Francisco Rowe. "A reproducible notebook to acquire, process and analyse satellite imagery." REGION 7, no. 2 (December 5, 2020): R15—R46. http://dx.doi.org/10.18335/region.v7i2.295.
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Satellite imagery is often used to study and monitor Earth surface changes. The open availability and extensive temporal coverage of Landsat imagery has enabled changes in temperature, wind, vegetation and ice melting speed for a period of up to 46 years. Yet, the use of satellite imagery to study cities has remained underutilised, partly due to the lack of a methodological approach to capture features and changes in the urban environment. This notebook offers a framework based on Python tools to demonstrate how to batch-download high-resolution satellite imagery; and enable the extraction, analysis and visualisation of features of the built environment to capture long-term urban changes.
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Wilkinson, Shaun P. "aphid: an R package for analysis with profile hidden Markov models." Bioinformatics 35, no. 19 (March 6, 2019): 3829–30. http://dx.doi.org/10.1093/bioinformatics/btz159.
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Abstract Summary Hidden Markov models (HMMs) and profile HMMs form an integral part of biological sequence analysis, supporting an ever-growing list of applications. The aphid R package can be used to derive, train, plot, import and export HMMs and profile HMMs in the R environment. Computationally-intensive dynamic programing recursions, such as the Viterbi, forward and backward algorithms are implemented in C++ and parallelized for increased speed and efficiency. Availability and implementation The aphid package is released under the GPL-3 license, and is freely available for download from CRAN and GitHub (https://github.com/shaunpwilkinson/aphid). Supplementary information Supplementary data are available at Bioinformatics online.
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Xu, Zhigang, Xiaochi Li, Xiangmo Zhao, Michael H. Zhang, and Zhongren Wang. "DSRC versus 4G-LTE for Connected Vehicle Applications: A Study on Field Experiments of Vehicular Communication Performance." Journal of Advanced Transportation 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/2750452.
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Dedicated short-range communication (DSRC) and 4G-LTE are two widely used candidate schemes for Connected Vehicle (CV) applications. It is thus of great necessity to compare these two most viable communication standards and clarify which one can meet the requirements of most V2X scenarios with respect to road safety, traffic efficiency, and infotainment. To the best of our knowledge, almost all the existing studies on comparing the feasibility of DRSC or LTE in V2X applications use software-based simulations, which may not represent realistic constraints. In this paper, a Connected Vehicle test-bed is established, which integrates the DSRC roadside units, 4G-LTE cellular communication stations, and vehicular on-board terminals. Three Connected Vehicle application scenarios are set as Collision Avoidance, Traffic Text Message Broadcast, and Multimedia File Download, respectively. A software tool is developed to record GPS positions/velocities of the test vehicles and record certain wireless communication performance indicators. The experiments have been carried out under different conditions. According to our results, 4G-LTE is more preferred for the nonsafety applications, such as traffic information transmission, file download, or Internet accessing, which does not necessarily require the high-speed real-time communication, while for the safety applications, such as Collision Avoidance or electronic traffic sign, DSRC outperforms the 4G-LTE.
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Kusumaningrum, Anggraini. "PENGUJIAN KINERJA JARINGAN SISTEM AKSES FILE BERBASIS CLIENT SERVER MENGGUNAKAN SAMBA SERVER." Conference SENATIK STT Adisutjipto Yogyakarta 2 (November 15, 2016): 129. http://dx.doi.org/10.28989/senatik.v2i0.31.
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Data communication is the process of exchanging data between two or more devices through a transmission medium such as a cable. In order for the data communication can occur, the device must be connected to communicate with each other or be a part of a communication system consisting of hardware (hardware) and software (software). Samba server is a software bridge between the two operating systems that run within a computer network. Samba is able to share files with computers that use operating system linux, unix and windows with a peer to peer system. The time needed on the LAN network access system based on client file servers using Samba server with a minimum file size of 3MB and a maximum of 1GB for the download process is 04 minutes 54 seconds while the upload is 09 minutes 24 seconds. Speed transfer rate that is produced with a minimum file size of 3MB and a maximum of 1GB for the download process is 4.762Kbps and to upload is 1.896Kbps. On QoS testing conducted on 5 PCs, 10PC, 15pc and client 20PC result more and more PC client that accesses 1 file the success rate will be getting worse, it is because the bottleneck on the network.Kata Kunci : Network, client server, Samba Server
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Riady, Alvin, and Aan Restu Mukthi. "Penerapan Manajemen Bandwith Menggunakan Hierarchical Token Bucket Di PT. Bukit Energi Servis Terpadu." Jurnal Pengembangan Sistem Informasi dan Informatika 2, no. 2 (November 23, 2021): 87–96. http://dx.doi.org/10.47747/jpsii.v2i2.549.
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Bukit Energi Servis Terpadu (BEST) is a company engaged in Operation & Maintenance (O&M) services which are members of the PT group. Bukit Asam Tbk. PT. Bukit Energi Servis Terpadu (BEST) already has a computer network in the form of adequate wired and wireless networks and has been connected to the internet. The bandwidth used for the scope of the office uses a bandwidth of 30 Mbps, but the problem of internet speed is not maximized where there is download activity and video streaming which causes the internet bandwidth in the office to be slow, thus affecting the activities of employees who are accessing the internet in the office either through wired networks and wireless internet hotspots. The results of the measurement of packet loss parameters (%) after Bandwidth Management with HTB is better, namely 0.12 % while before Bandwidth Management with HTB is carried out with a value of 0.52 %. The results of measuring the throughput parameters before using Bandwidth Management with HTB where the use of throughput after using Management Bandwidth with HTB obtained results of 624.9 kbps while the throughput before Bandwidth Management was carried out was 624.4 kbps. By limiting bandwidth using the Hierarchical Token Bucket (HTB) facility, bandwidth can be divided into certain sections or prioritized for those who need higher internet speeds, while those that do not require an internet connection are provided with a small speed.
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Acuña, Andres Valencia, Brian Meneses Claudio, and Alexi Delgado. "Design Radio Network Links to Provide Internet for Pupulation of San Andres de Llamellin-Ancash." International Journal of Emerging Technology and Advanced Engineering 12, no. 1 (January 16, 2022): 51–62. http://dx.doi.org/10.46338/ijetae0122_06.
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In recent years being able to have access to the internet has become a tool not only to be able to communicate in the distance but it is a great tool to be able to feed knowledge, it is because of them that children have a great educational utility and after this pandemic in Peru it was necessary to close schools, to be able to give remote classes or virtual classes. To solve the problem, we propose to be able to design a network of radio links whereby means of a base station of emission and reception, with an antenna of sectorial type and directional antennas to be able to realize a Point – Multipoint link which will be able to manage the quality of signal by means of a routing with functions of control of speeds for each connection of each home. It was the result that the connections of the radio link at an average distance from the coverage that the network had the signal was better and that the connections that were very far or close to the coverage area had complications, but despite this the connections were sufficient to be able to maintain the virtual classes that is what was planned. It is recommended that for a better connection and complete coverage it would be to reinforce the broadcast base with more sectoral antennas in the network. Keywords- Radio link, Point - Multipoint, Router, Download speed, Upload speed.
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Tamchyna, Aleš, Ondřej Dušek, Rudolf Rosa, and Pavel Pecina. "MTMonkey: A Scalable Infrastructure for a Machine Translation Web Service." Prague Bulletin of Mathematical Linguistics 100, no. 1 (October 1, 2013): 31–40. http://dx.doi.org/10.2478/pralin-2013-0009.
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Abstract We present a web service which handles and distributes JSON-encoded HTTP requests for machine translation (MT) among multiple machines running an MT system, including text pre- and post-processing. It is currently used to provide MT between several languages for cross-lingual information retrieval in the EU FP7 Khresmoi project. The software consists of an application server and remote workers which handle text processing and communicate translation requests to MT systems. The communication between the application server and the workers is based on the XML-RPC protocol. We present the overall design of the software and test results which document speed and scalability of our solution. Our software is licensed under the Apache 2.0 licence and is available for download from the Lindat-Clarin repository and Github.
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Suchanek, Michał. "The costs of retrofitting smart tachographs in HDVS in European Union." Transport Economics and Logistics 77 (December 17, 2018): 125–30. http://dx.doi.org/10.26881/etil.2018.77.12.
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The paper focuses on the costs connected with the idea of retrofitting smart tachographs in all heavy duty vehicles in the European Union. Such a motion has been proposed, in order to increase the road safety. The new class of tachographs, ie. the smart tachographs are supposed to be fitted with a GNSS device ensuring a constant monitoring of the vehicle’s speed and other parameters but also a transmitter which should allow to send data in real time without the necessity to download the data manually. However, such a vast process will generate severe costs for the Member States’ administration but also for private companies which will need to handle the cost of fitting the device in their vehicles. The purpose of the article is to estimate this cost.
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Dutta, Anirban, Mohammed Monzoorul Haque, Tungadri Bose, C. V. S. K. Reddy, and Sharmila S. Mande. "FQC: A novel approach for efficient compression, archival, and dissemination of fastq datasets." Journal of Bioinformatics and Computational Biology 13, no. 03 (May 15, 2015): 1541003. http://dx.doi.org/10.1142/s0219720015410036.
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Sequence data repositories archive and disseminate fastq data in compressed format. In spite of having relatively lower compression efficiency, data repositories continue to prefer GZIP over available specialized fastq compression algorithms. Ease of deployment, high processing speed and portability are the reasons for this preference. This study presents FQC, a fastq compression method that, in addition to providing significantly higher compression gains over GZIP, incorporates features necessary for universal adoption by data repositories/end-users. This study also proposes a novel archival strategy which allows sequence repositories to simultaneously store and disseminate lossless as well as (multiple) lossy variants of fastq files, without necessitating any additional storage requirements. For academic users, Linux, Windows, and Mac implementations (both 32 and 64-bit) of FQC are freely available for download at: https://metagenomics.atc.tcs.com/compression/FQC .
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Zhang, Guo Yin, and Yan Liu. "Research on Content Distribution Mechanism of MP2P Networks." Applied Mechanics and Materials 568-570 (June 2014): 1403–11. http://dx.doi.org/10.4028/www.scientific.net/amm.568-570.1403.
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In consideration of the current MP2P network disturbance from frequent location changes of the mobile nodes, the limited computing power and storage capacity, this paper proposes a flexible strategy of partition management by assigning different functions to nodes according to some standards, regarding a subnet as a unit and using super-nodes to manage subnets. In order to speed up the data transmission and replacement efficiency, data is processed with partial network coding technology. Additionally, a trans-subnet query algorithm is proposed to link subnets, conduct information exchange between subnets and resource location. Results of the experiment manifested that this strategy can efficiently increase the resource download success rate and hit rate, reduce the average delay, improve the content distribution efficiency of MP2P networks, and simultaneously enhance system robustness.
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Abu-Taieh, Evon, and Issam AlHadid. "CRUSH: A New Lossless Compression Algorithm." Modern Applied Science 12, no. 11 (October 29, 2018): 387. http://dx.doi.org/10.5539/mas.v12n11p387.
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Multimedia is highly competitive world, one of the properties that is reflected is speed of download and upload of multimedia elements: text, sound, pictures, animation. This paper presents CRUSH algorithm which is a lossless compression algorithm. CRUSH algorithm can be used to compress files. CRUSH method is fast and simple with time complexity O(n) where n is the number of elements being compressed.Furthermore, compressed file is independent from algorithm and unnecessary data structures. As the paper will show comparison with other compression algorithms like Shannon–Fano code, Huffman coding, Run Length Encoding, Arithmetic Coding, Lempel-Ziv-Welch (LZW), Run Length Encoding (RLE), Burrows-Wheeler Transform.Move-to-Front (MTF) Transform, Haar, wavelet tree, Delta Encoding, Rice &Golomb Coding, Tunstall coding, DEFLATE algorithm, Run-Length Golomb-Rice (RLGR).
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Abu-Taieh, Evon, and Issam AlHadid. "CRUSH: A New Lossless Compression Algorithm." Modern Applied Science 12, no. 11 (October 29, 2018): 406. http://dx.doi.org/10.5539/mas.v12n11p406.
Full textAbstract:
Multimedia is highly competitive world, one of the properties that is reflected is speed of download and upload of multimedia elements: text, sound, pictures, animation. This paper presents CRUSH algorithm which is a lossless compression algorithm. CRUSH algorithm can be used to compress files. CRUSH method is fast and simple with time complexity O(n) where n is the number of elements being compressed.Furthermore, compressed file is independent from algorithm and unnecessary data structures. As the paper will show comparison with other compression algorithms like Shannon–Fano code, Huffman coding, Run Length Encoding, Arithmetic Coding, Lempel-Ziv-Welch (LZW), Run Length Encoding (RLE), Burrows-Wheeler Transform.Move-to-Front (MTF) Transform, Haar, wavelet tree, Delta Encoding, Rice &Golomb Coding, Tunstall coding, DEFLATE algorithm, Run-Length Golomb-Rice (RLGR).
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Yankotinu Al Qod'r Jonnata, Fahrudin Mukti Wibowo, and Iqsyahiro Kresna A. "Prototype Pendeteksi Daerah Rawan Kecelakaan Berbasis Internet of Things." Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) 4, no. 6 (December 24, 2020): 1017–27. http://dx.doi.org/10.29207/resti.v4i6.2530.
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The high number of deaths due to traffic accidents is still a problem for every country where Indonesia ranks third in Asia with 38,279 deaths according to the 2015 Global Status Report on Road Safety. Blackspots scattered in Indonesia has a role in contributing to the death rate, however not all blackspots are equipped with warning signs. Based on these problems then developed a prototype in the form of a device for detecting and website as the central information system of blackspots based Internet of Things. The prototype is designed using an Arduino Uno Rev 3 microcontroller equipped with a GPS module to measure vehicle speed and distance from the setpoint before arriving on blackspots, a GSM module to download blackspots data and upload speed and distance data to the database, and LED components, speakers/buzzer, OLED display to provide notification every time crossing the setpoint of blackspots. The usability testing performance measurement method is used to measure the performance of the device prototype and the black box testing method is used to validate each function of the website system. The results of this research obtained the success rate of the prototype device was 60% with the highest error rate of 19.09% at the 1500m setpoint for speed and 57.98% at 10m setpoint for the distance.
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Nugroho, Fredy Aga, Raden Sumiharto, and Roghib Muhammad Hujja. "Pengembangan Sistem Ground Control Station Berbasis Internet Webserver pada Pesawat Tanpa Awak." IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) 8, no. 1 (April 30, 2018): 1. http://dx.doi.org/10.22146/ijeis.30126.
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In unmanned aerial operations, the ground control station duties as a monitoring and command station so that operators on land can send mission orders, monitor the mission's course and monitor the condition of the UAV during the mission. It is necessary to have a GCS system capable of connecting with UAV that not limited with control transmitter range.This research develops GCS system using internet network and web server based. the system consists of two units, namely flying units and GCS units. The flying unit consists of Raspberry pi, modem, webcam, ADAHRS module and quadrotor with MultiWii controller. on the GCS unit consists of Raspberry pi connected on the internet network with 10Mbps download speed and 1.5Mbps upload.The GCS system can display aircraft conditions, stream video and perform command controls. Configure streaming video for delay time of no more than one second with 240x144 pixel resolution, 256kbps maximum bitrate and 5 fps framerate. This configuration runs at a 1.1 Mbps upload speed with a percentage of 93.83% bitrate compression. Aircraft condition data sent to GCS is optimal if internet bandwidth exceeds the bitrate of streaming video used on the system
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Walker-Gibbs, Bernadette, Louise Paatsch, Janet Moles, Bonnie Yim, and Terri Redpath. "A view through the long lens: Pre-service teachers' perceptions of multi-campus course delivery." Journal of University Teaching and Learning Practice 13, no. 5 (December 1, 2016): 155–63. http://dx.doi.org/10.53761/1.13.5.12.
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This paper explores the results of a survey that was conducted with 277 pre-service teachers studying at two regional university campuses in Victoria, Australia in 2014. Data showed that participants expressed high level of satisfaction with the quality of their undergraduate courses in education including the flexible teaching and learning experiences. However, many reported experiencing frustration with accessing cloud-based learning materials and support services, including communication with lecturers. Challenges in accessing learning materials were mainly attributed to slow internet speed which increased the time taken to download resources. Access to support services and lecturers was made difficult because many key staff were located at the larger, urban campuses, thus sometimes causing delay in communication with them. This study recommends that university faculties review the accessibility of services, facilities and resources for rural and remote students. Recommendations include greater attention to the presentation of online learning materials to ensure accessibility for all students, regardless of internet speed and location. Moreover, findings showed that by closer examination of the accessibility of services to reflect the reality and complexity of students’ lives, universities could increase equity for rural and remote students.
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Roberge, Vincent, and Mohammed Tarbouchi. "Parallel Algorithm on GPU for Wireless Sensor Data Acquisition Using a Team of Unmanned Aerial Vehicles." Sensors 21, no. 20 (October 15, 2021): 6851. http://dx.doi.org/10.3390/s21206851.
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This paper proposes a framework for the wireless sensor data acquisition using a team of Unmanned Aerial Vehicles (UAVs). Scattered over a terrain, the sensors detect information about their surroundings and can transmit this information wirelessly over a short range. With no access to a terrestrial or satellite communication network to relay the information to, UAVs are used to visit the sensors and collect the data. The proposed framework uses an iterative k-means algorithm to group the sensors into clusters and to identify Download Points (DPs) where the UAVs hover to download the data. A Single-Source–Shortest-Path algorithm (SSSP) is used to compute optimal paths between every pair of DPs with a constraint to reduce the number of turns. A genetic algorithm supplemented with a 2-opt local search heuristic is used to solve the multi-travelling salesperson problem and to find optimized tours for each UAVs. Finally, a collision avoidance strategy is implemented to guarantee collision-free trajectories. Concerned with the overall runtime of the framework, the SSSP algorithm is implemented in parallel on a graphics processing unit. The proposed framework is tested in simulation using three UAVs and realistic 3D maps with up to 100 sensors and runs in just 20.7 s, a 33.3× speed-up compared to a sequential execution on CPU. The results show that the proposed method is efficient at calculating optimized trajectories for the UAVs for data acquisition from wireless sensors. The results also show the significant advantage of the parallel implementation on GPU.
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Putri, Hasanah, Tri Nopiani Damayanti, and Rohmat Tulloh. "Analysis of Mobility Impacts on LTE Network for Video Streaming Services using Distributed Antenna System." IJAIT (International Journal of Applied Information Technology) 1, no. 02 (December 7, 2017): 79. http://dx.doi.org/10.25124/ijait.v1i02.1044.
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LTE (Long Term Evolution) is a Broadband Wireless Access (BWA) technology that allows high speed and a wide range of access. LTE is designed to meet the needs for Quality of Service (QoS), i.e. the ability to download up to 300 Mbps and upload up to 75 Mbps. This study investigated the impacts of user mobility on the LTE network for video streaming services. The approach employed in this study included multi-user with Distributed AntennaSystem (DAS) and various variations of user mobility speed. Observations were made on the condition of the user moving from one cell to another so that the handover occurred. The throughput value will increase by 33% and 47% when the user’s distances are respectively 1250 m and 2000 m from eNode B. In addition, the delay value will reduce by 66.32% an 67.58% when the user’s distances are respectively 1250 m and 2000 m from eNode B. Moreover, the PDR value will increase by 48.74% and 55.45% when the user’s distances are respectively 1250 m and 2000 m from eNode B. The use of a distributed antenna system (DAS) model on LTE network has resulted in improved quality of performance when the user streams a video.
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Yamazaki, Taku, Kazuma Asano, Satoshi Arai, Yusuke Shimomura, and Takumi Miyoshi. "LoCO: Local Cooperative Data Offloading System Based on Location Information." Journal of Telecommunications and Information Technology 1 (March 29, 2019): 67–75. http://dx.doi.org/10.26636/jtit.2019.130518.
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The development of high speed mobile networks and the widespread use of smartphones have enabled users to easily obtain large data volumes via the Internet. This causes a heavy consumption of network resources, a burden on the available bandwidth. To solve such problems, a data offloading method with a wireless LAN access point has been used to distribute traffic from mobile to fixed networks. However, the method using wireless LAN access points can only change the communication paths but cannot reduce the overall traffic. This paper proposes a local cooperative data offloading system (LoCO) that reduces the overall traffic by sharing data, with direct communication between neighbors based on their location-related information. Moreover, the authors implemented the LoCO system on Android smartphones and clarified its performance in comparison with a traditional client/server system through experiments to download data in a real-world environment.
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Mishra, Abhishek kumar, Sara Ayoubi, Giulio Grassi, and Renata Teixeira. "NemFi." ACM SIGCOMM Computer Communication Review 51, no. 3 (July 11, 2021): 2–8. http://dx.doi.org/10.1145/3477482.3477484.
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This paper presents NemFi: a trace-driven WiFi emulator. NemFi is a record-and-replay emulator that captures traces representing real WiFi conditions, and later replay these traces to reproduce the same conditions. In this paper, we demonstrate that the state-of-the-art emulator that was developed for cellular links cannot emulate WiFi conditions. We identify the three key differences that must be addressed to enable accurate WiFi record-and-replay: WiFi packet losses, medium-access control, and frame aggregation. We then extend the existing cellular network emulator to support WiFi record-and-replay. We evaluate the performance of NemFi via repeated experimentation across different WiFi conditions and for three different types of applications: speed-test, file download, and video streaming. Our experimental results demonstrate that average application performance over NemFi and real WiFi links is similar (with less than 3 percent difference).
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Delorme, Vincent, Minjeong Woo, Virginia Carla de Almeida Falcão, and Connor Wood. "PlateEditor: A web-based application for the management of multi-well plate layouts and associated data." PLOS ONE 16, no. 5 (May 28, 2021): e0252488. http://dx.doi.org/10.1371/journal.pone.0252488.
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Multi-well plates are convenient tools to work with in biology experiments, as they allow the probing of multiple conditions in a compact and economic way. Although both free and commercial software exist for the definition of plate layout and management of plate data, we were looking for a more flexible solution, available anywhere, free from download, installation and licensing constraints. In this context, we created PlateEditor, a free web-based, client-side application allowing rapid creation of even complex layouts, including dose-response curves and multiple combination experiments for any plate format up to 1536 wells. PlateEditor also provides heatmap visualization and aggregation features to speed-up the process of data analysis and formatting for export in other application. Written in pure JavaScript, it is fully open-source, can be integrated in various workflows and has the potential to be extended with more functionalities in the future.
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Habib, Abdurrahman Al. "Penerapan Fungsi Hash dengan Algoritma RIPEMD-128 Pada Aplikasi Duplicate PDF Scanner." Journal of Computer System and Informatics (JoSYC) 3, no. 1 (November 30, 2021): 16–25. http://dx.doi.org/10.47065/josyc.v3i1.822.
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The development of the digital world era continues to grow and is increasing. Many industries have switched to digital technology such as photos, videos, music, and so on. Of course, this change brings many benefits in terms of speed and data access. Ease of accessing the internet also has a major impact on human life. The ease of accessing documents online is very helpful if you want to find and download pdf documents online. With this convenience, many of the same pdf files are downloaded more than once. This will definitely burden the storage space. To distinguish one pdf file from another, it is done by viewing and reading the contents of the pdf file. This is very inconvenient and time consuming. To overcome this, we need a practical way that can be used to search for the same pdf document so that it can delete duplicate pdf files. One way that can be used to overcome this problem is to use a hash function. The hash function in cryptography is a very important tool in various cryptographic applications, for example in digital signature formation, authentication, and so on. Since the discovery of the MD4 hash algorithm by Ron Rivest, many other hash algorithms have been developed based on the principles of this algorithm. One of them is the RIPEMD-128 algorithm. RIPEMD-128 is an iterative hash function that operates on 32-bit words. By using a hash function, the identity of the pdf file can be generated. If the pdf files are the same it will produce the same hash value as well. This will make it easier to group the same pdf documents so that it will speed up the process of deleting the same pdf files. With the pdf file scanner application, pdf files will be searched for all folders and will group pdf files based on the same hash value. So that it will be easier for users to delete the same pdf file.
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Jia, Han, Chun Guo, and Xiaozhong Liu. "Smartphone and Tablet Application (App) Life Cycle Characterization via Apple App Store Rank." Data and Information Management 4, no. 1 (March 24, 2020): 44–67. http://dx.doi.org/10.2478/dim-2020-0002.
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AbstractWith the rapid growth of the smartphone and tablet market, mobile application (App) industry that provides a variety of functional devices is also growing at a striking speed. Product life cycle (PLC) theory, which has a long history, has been applied to a great number of industries and products and is widely used in the management domain. In this study, we apply classical PLC theory to mobile Apps on Apple smartphone and tablet devices (Apple App Store). Instead of trying to utilize often-unavailable sales or download volume data, we use open-access App daily download rankings as an indicator to characterize the normalized dynamic market popularity of an App. We also use this ranking information to generate an App life cycle model. By using this model, we compare paid and free Apps from 20 different categories. Our results show that Apps across various categories have different kinds of life cycles and exhibit various unique and unpredictable characteristics. Furthermore, as large-scale heterogeneous data (e.g., user App ratings, App hardware/software requirements, or App version updates) become available and are attached to each target App, an important contribution of this paper is that we perform in-depth studies to explore how such data correlate and affect the App life cycle. Using different regression techniques (i.e., logistic, ordinary least squares, and partial least squares), we built different models to investigate these relationships. The results indicate that some explicit and latent independent variables are more important than others for the characterization of App life cycle. In addition, we find that life cycle analysis for different App categories requires different tailored regression models, confirming that inner-category App life cycles are more predictable and comparable than App life cycles across different categories.
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Antonini, Amado, Winter Guerra, Varun Murali, Thomas Sayre-McCord, and Sertac Karaman. "The Blackbird UAV dataset." International Journal of Robotics Research 39, no. 10-11 (March 18, 2020): 1346–64. http://dx.doi.org/10.1177/0278364920908331.
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This article describes the Blackbird unmanned aerial vehicle (UAV) Dataset, a large-scale suite of sensor data and corresponding ground truth from a custom-built quadrotor platform equipped with an inertial measurement unit (IMU), rotor tachometers, and virtual color, grayscale, and depth cameras. Motivated by the increasing demand for agile, autonomous operation of aerial vehicles, this dataset is designed to facilitate the development and evaluation of high-performance UAV perception algorithms. The dataset contains over 10 hours of data from our quadrotor tracing 18 different trajectories at varying maximum speeds (0.5 to 13.8 ms-1) through 5 different visual environments for a total of 176 unique flights. For each flight, we provide 120 Hz grayscale, 60 Hz RGB-D, and 60 Hz semantically segmented images from forward stereo and downward-facing photorealistic virtual cameras in addition to 100 Hz IMU, ~190 Hz motor speed sensors, and 360 Hz millimeter-accurate motion capture ground truth. The Blackbird UAV dataset is therefore well suited to the development of algorithms for visual inertial navigation, 3D reconstruction, and depth estimation. As a benchmark for future algorithms, the performance of two state-of-the-art visual odometry algorithms are reported and scripts for comparing against the benchmarks are included with the dataset. The dataset is available for download at http://blackbird-dataset.mit.edu/ .