84 research outputs found
Upptäcka felkopplade Telia kunder i nätverket
No full textAbstract The project consists of creating a program that can detect fiber customers that has been misconnected on the switch connecting them to the Telia network. The program will be able compare what customer is configured on the port against the customer who has received and the Telia router connected to the port. If there is a mismatch then there is a chance the customer has been misconnected. The comparison can be done because the unique serial number of the Telia router is both registered in the session database over active Telia routers and also in the database of products delivered to customers. This will only work on customers with Telia routers, but it will still be helpful as it would give an indication of what switches might have misconnect customers. If there is one misconnected customer on a switch there is likely to be more. The program was created with MySQL and PHP in the form of a web tool. The program can be run against certain switches or the program can be run against all active Telia routers and look for mismatches. To make the program work it required access to the session database over active Telia routers, the database over customer configuration on the port and the database over Telia routers sent to customers. These are three different systems and because of the time constraint only a part of the data was used or retrieved from testing environments. With the available data the program could do the comparison against 8627 customers and of those 303 customers had a mismatch in the comparison. This does not necessarily mean that all of them are misconnected. In most cases it was another person in the household receiving the Telia router than the person that was signed up on Telia services. This could be sort out by ensuring that the person receiving the Telia router also was signed up to a Telia service. This left 57 customers out of the 303. Out of those 57 customers a part of them had special services and some had split the services on two persons in one household. After sorting them out manually there was around 15 customers left who was likely misconnected There is still no way to be certain those 15 customer are misconnected, however there a possibility they are and if there are several mismatches on a single switch it is certainly worth investigating further as it is a large possibility there are misconnected customers.Sammanfattning Projektet består i att skapa ett program som kan upptäcka fiber kunder som har blivit felkopplade på switchen som ansluter dem till Telias nätverk. Programmet kommer att jämföra kunden som är konfigurerad på porten mot personen som har mottagit Teliaroutern som sitter på porten. Om de inte stämmer överens så finns det en risk att kunden har blivit felkopplad. Jämförelsen kan göras på grund av det unika serie numret på Teliaroutern som är registrerad både i sessionsdatabasen över aktiva Telia routrar och databasen över produkter levererade till kunder. Detta kommer bara fungera för kunder med Telia routrar, men kommer fortfarande vara användbart då det ger en indikation om vilka switchar som eventuellt kan ha felkopplade kunder. Om det finns en felkopplad kund så är det stor risk att det finns fler. Programmet skapades med MySQL och PHP i formen av ett webbverktyg. Programmet kan köras mot valda switchar eller kan det köras mot alla aktiva Telia routrar och hitta kunder där jämnföring inte stämmer överens. För att programmet ska fungera så behövdes det tillgång till sessionsdatabasen över aktiva Telia routrar, databasen över kundens tjänster konfigurerade på porten och databasen över utskickade Telia routrar. Det är alltså tre olika system och på grund av tidsbegränsning så användes bara en del av informationen eller så hämtades informationen från testmiljöer. Med den tillgängliga informationen kunde programmet köras mot 8627 kunder och av dem så stämde inte 303 kunder överens i jämförelsen. Detta betyder inte nödvändigtvis att alla är felkopplade. I de flesta fall så var det en annan person i hushållet som hade tagit emot Teliaroutern än den personen som stod skriven på Teliatjänsten. Dessa fall kunde sorteras bort genom att bara ta fall där mottagaren av Teliaroutern också står skriven på en Teliatjänst. Efter denna utsortering så lämnades 57 kunder kvar av 303. Av de 57 kunderna så hade några av dem specialtjänster och vissa hade delat upp tjänsterna på två personer i samma hushåll. Efter att ha manuellt sorterat dem så fanns det 15 kunder kvar som troligen är felkopplade. Det finns fortfarande inget sätt att garantera att de 15 kunderna har blivit felkopplade, men det finns en stor risk att dem är felkopplade och om programmet hittar flera misstänkta felkopplingar på samma switch är mycket troligt att det finns felkopplade kunder
Charting the complete elastic properties of inorganic crystalline compounds
No full textMaterials Science and EngineeringMechanical, Maritime and Materials Engineerin
Internet Exchanges for Used Books: An Empirical Analysis of Welfare Implications
No full textInformation technology-enabled exchanges have enhanced the viability of a variety of secondary
markets, notably markets for used books. Electronic used book exchanges, in particular, offer a wider selection, lower search costs, and significantly lower prices than physical used bookstores do. The increased viability of these used book markets has caused concern among groups such as the Book Publishers Association and AuthorâÃÂÃÂs Guild who believe that used book markets will significantly cannibalize new book sales.
This proposition, while theoretically possible, is based on speculation as opposed to empirical
evidence. In this research, we use a unique dataset collected from Amazon.comâÃÂÃÂs new and used
marketplaces to estimate the impact of IT-enabled used book markets on new book sales. We use
these data to calculate the impact of these secondary market exchanges on consumer and publisher welfare by calculating the cross-price elasticity of new books sales with respect to used
book prices.
Our analysis suggests that IT-enabled secondary market exchanges increase consumer surplus by
approximately 32 million in gross profit annually (about 0.2% of total gross profit) due to the
presence of AmazonâÃÂÃÂs used book markets. Further, the additional used book readership gain
from these electronic markets may mitigate author losses through increased revenue from secondary
sources such as speaking and licensing fees. These surplus changes, combined with the estimated
$64 million the used book market added to AmazonâÃÂÃÂs gross profits, show that IT-enabled used markets for books have a strong positive first-order impact on total welfare.Information Systems Working Papers Serie
Author Correction: Hobit- and Blimp-1-driven CD4+ tissue-resident memory T cells control chronic intestinal inflammation
No full textIn the version of this article initially published, a portion of the Acknowledgements section (“the Clinical Research Group CEDER of the German Research Council (DFG)”) was incorrect. The correct statement is as follows: “..the Collaborative Research Center TRR241 of the German Research Council (DFG)..”. The error has been corrected in the HTML and PDF version of the article
The Myth of the Double-Blind Review? Author Identification Using Only Citations
No full textPrior studies have questioned the degree of anonymity of the double-blind review process for scholarly research articles. For example, one study based on a survey of reviewers concluded that authors often could be identified by reviewers using a combination of the author's reference list and the referee's personal background knowledge. For the KDD Cup 2003 competition's "Open Task" we examined how well various automatic matching techniques could identify authors within the competition's very large archive of research papers. This paper describes the issues surrounding author identification, how these issues motivated our study, and the results we obtained. The best method, based on discriminative self-citations, identified authors correctly 40-45% of the time. One main motivation for double-blind review is to eliminate bias in favor of well-known authors. However, identification accuracy for authors with substantial publication history is even better (60% accuracy for the top-10% most prolific authors, 85% for authors with 100 or more prior papers).NYU, Stern School of Business, IOMS Department, Center for Digital Economy Researc
Integrationsplattformar inom hälso- och sjukvård : Avgörande egenskaper vid investering av integrationsplattform
No full textDen här studien syftar till att undersöka och skapa en större förståelse för bakgrunden till val av integrationsplattform inom regionerna i Sverige. Integrationsplattformar inom hälso- och sjukvården är ett komplext område, delvis på grund av den politiska styrningen men även för att IT-hanteringen idag är decentraliserad. Författaren har tittat på valet som de olika regionerna har gjort utifrån strategiska, ekonomiska, tekniska, verksamhetsmässiga och kulturella egenskaper. Studien tittar även på skillnader beroende på om det är ett större respektive mindre landsting. En integrationsplattform kan underlätta och agera en mellanhand samt låter systemen kommunicera med varandra utan att behöva en point-to-point koppling. Många av regionerna har en budget att förhålla sig till och vill bedriva sin verksamhet till så låg kostnad som möjlig utan att behöva påverka organisationen och deras processer. I dagsläget finns det ingen integrationsplattform som ligger i framkant till att stödja alla de olika behoven som de olika regionerna har och därav kommer varje region finna den lösning som är bäst för regionen. I jämförelse med tidigare studier där de strategiska egenskaperna visas det att i den här studien att det främst de ekonomiska egenskaperna inom den offentliga verksamheten som är av störst betydelse.This study aims to investigate and create a better understanding of why the different regions of Sweden have chosen their integration platform within the healthcare sector. Due to the decentralisation and political governance there is a complexity within the healthcare sector various integration platforms. The author has looked at the choices that the different regions have made based on strategic, economical, technical, operational and cultural characteristics. The various regions size is also investigated as a factor, making a distinction between higher and lower populated regions. An integration platform acts as an intermediary, allowing the various systems to communicate with each other without having a point-to-point connection. At present there is no integration platform at the forefront of supporting all the different needs of the different regions, each region finds the solution that is best for itself
Path-oriented synchronized transit scheduling using time-dependent data
No full textWith the emergence of innovations associated with public transport (PT) services, such as Mobility-as-a-Service, demand responsive transit, and autonomous vehicles, the door-to-door PT journey is achievable via multiple transfers between and within different PT modes. As such, seamless transfers between different modes of public transportation become an increasingly important factor for the attractiveness of PT services. At the same time, recent developments in travel time prediction methodologies offer new, reliable data sources for the optimization of PT operations. This work, with the consideration of these two elements, develops a mixed integer linear programming model for the PT schedule synchronization problem. The novelty is threefold. First, a novel concept of path-oriented scheduling is proposed. The path transfer time is explicitly formulated and minimized to provide a seamless travel experience considering that the emerging multimodal mobility inevitably induces multiple transfers. Second, time-dependent travel time data is also utilized in the model, which allows us to harness new and more representative data sources for improving PT services. Third, in order to complement the increase in computational complexity as a result of the utilization of time-dependent travel time data, three novel valid inequalities (VIs) are derived. Numerical studies show that the use of time-dependent travel time data is beneficial in terms of reducing path transfer times, when compared to using the mean historical travel times. The numerical study also reveals a tradeoff between the maximum allowable path transfer time and trip time. Using simulation studies on three bus lines in Copenhagen, we demonstrate that the valid inequalities could reduce the computation time by 8.5% on average, where the maximum reduction of computation time could reach 54.0%. The proposed valid inequalities are benchmarked against two classes of valid inequalities in the literature. It is found that the proposed valid inequalities could outperform those in the literature. We also found that further improvement in computational performance can be attained by using a combination of the proposed valid inequalities.Signal Processing System
Palacio de Iturbide: Ciudad de México
No full textLa información de esta miniguía se basa en documentos del Archivo de la Subdirección de Documentación y Biblioteca CNMH-INAH, y en textos del Fomento Cultural Banamex.En el espacio que hoy ocupa esta construcción estaba la casa del Contador Mayor del Reino, Francisco de Córdova. Tiempo después pasó a manos de las monjas de Santa Brígida, antes de que los condes de San Mateo de Valparaíso y los marqueses de Jaral de Berrio la mandaran reedificar. Estos habitaban el palacio hoy ocupado por el Banco Nacional de México, €ñ las calles de Isabel la Católica y Venustiano Carranza, el cual, una vez terminada la casa principal, pensaban ceder a su única hija María Ana de Berrio y Campa. Esta se encontraba casada con el italiano Pedro de Moncada, Marqués de Villafont, quien sugirió la forma interior del nueva casa, inspirándose en el patio del Palacio Real de Palermo, de donde era originario.</p
Quais os rumos da bioética?
No full textO autor descreve sua crescente preocupação com os próximos passos do pensamento bioético e enfatiza a necessidade de se manter um compromisso com os problemas legítimos do nosso mundo, ao invés de se ceder à atração de alguns tópicos que chamam mais a atenção, mas podem ser eventualmente fúteis.The author summarizes his increasing worries on the next steps of bioethical thinking and emphasizes the strong need to keep in pace with the legitimate problems of our world, instead of the apparent atractiveness of some colourful, but maybe futile, topics
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