1,051 research outputs found

    Design and realization of client application for cooperation with ONET Modeler

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    Bakalářská práce „Návrh a realizace klientské aplikace pro spoluprácí s OPNET MODELEREM“ pojednává o snaze přiblížit klienta ke snadnější a kvalitnější komunikaci se serverem. Otevřít nové možnosti pro efektní práci v síti. Cílem práce je propojit dvě komunikační stanice, které budou spolu komunikovat. OPNET komunikuje s externím programem, který přesměruje data do síťové vrstvy. Práce popisuje jednotlivé kroky ve vytváření klientského modelu. Součástí práce je úvod do simulačního prostředí OPNET Modeler na který navazuje podrobný popis naprogramování externí aplikace.The bachelor thesis „Design and realization of client application for cooperation with OPNET Modeler“ is about trying to bring a client to easier and better communication with the server. Open new opportunities for effective work in the network. Goal of this work is to interconnect two communication stations, which will together communivate. OPNET communicates with an external program which redirects the data to the network layer. The work describes the individual steps in creating a model client. Part of the work is introduction to the OPNET Modeler simulation environment, whereupon it is tied together a detailed desciption of programming of an external application.

    IPv6 for Wireless Sensor Networks

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    Diplomová práce se zabývá problematikou protokolu 6LoWPAN a implementace protokolu IPv6 na zadané platformě. Úvod práce se zabývá objasněním bezdrátový senzorových sítí. Následně bylo popsáno protokol 6LoWPAN, který mapuje protokol IPv6 na standard IEEE 802.15.4. Dál se práce věnuje průzkumu moľných operačních systémů, které jsou určeny pro senzorových sítě a následuje porovnání jejich vlastností a předností. V kapitole páte bylo zaměřeno na implementaci operačního systému do senzorového uzlu Iris, seznámení se s strukturou operačního systému ContikiOS. Na konci práce se nachází detailně popsaná implementace tohoto systému do senzorového uzlu Iris.This thesis deals with the issues 6LoWPAN protokolu and implementation of IPv6 on the specied platform. Introduction thesis deals with the explanation of wireless sensor networks. Next it was descibed 6LoWPAN protocol, which maps IPv6 on standard IEEE 802.15.4. The thesis further concentrates to exploration of possible operation systems, that are designed for sensor networks and then followed by comparison of their characteristics and advantages. The fth chapter is focused on he implementation of the operating system to the sensor node Iris, introduction Iris and with the structure of the operating system Contiki OS. At the end of thesis is description of the implementation of this system in the sensor node Iris.

    Die Macht des Defaults — Wirkung von Empfehlungen und Vorgaben auf das individuelle Entscheidungsverhalten

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    Zusammenfassung: Bei der Wahl vieler Produkte ist der Kunde mit Empfehlungen und Vorgaben der Hersteller und Händler (Defaults) konfrontiert. Bei der online-Konfiguration eines Erzeugnisses (z. B. Pkw) ist für alle zwingend erforderlichen Merkmale (z. B. Motor) jeweils ein Default (d. h. eine Ausprägung, z. B. 3.2 Liter) vorgegeben. Zudem geben die Anbieter Empfehlungen bezüglich bestimmter Merkmalsausprägungen ab, an denen sich die Nachfrager orientieren. Obgleich der grundsätzliche Einfluss von Defaults auf das Entscheidungsverhalten unbestritten ist, sind wichtige Fragen etwa nach dem Effekt unterschiedlicher Default-Varianten noch nicht beantwortet. Anhand einer empirischen Studie, in deren Mittelpunkt ein Car-Konfigurator steht, kann gezeigt werden, wie verschiedene Defaults das Entscheidungsverhalten der Individuen beeinflussen. Die Befunde erlauben Rückschlüsse über den Prozess der Herausbildung von Produktpräferenze

    BORM - Business Object Relation Modeling

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    BORM is an object-oriented and process-based analysis and design methodology, which has proved to be effective in the development of business systems. The effectiveness gained is largely due to an unified and simple method for presenting necessary aspects of the relevant business model, which can be simulated, verified and validated for subsequent software implementation. The BORM methodology makes extensive use of business process modeling towards the area of software engineering. This paper outlines BORM and presents it on an application example created in Craft.CASE analysis and modeling tool

    Water governance in the Kyrgyz agricultural sector: on its way to integrated water resource management?

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    "As a reaction to growing water scarcity worldwide, sustainable water allocation and use, and in particular the role of agriculture as a major water user, have become important topics in the development discourse. In recent years Integrated Water Resources Management (IWRM) emerged as an answer to many water management problems. IWRM approaches water management from a holistic perspective and encompasses, among others, the integration of economic, ecological and social aspects. Is implementation of such a holistic approach feasible in developing countries and countries in transition or does it rather overburden them? First experiences have been made with the implementation of IWRM in several developing and transition countries. The aim of this study is to provide some answers to the question of what has been achieved so far. Based on an analysis of Kyrgyz water governance, the study assesses the status quo as well as the potentials for and obstacles to the realization of the normative framework of IWRM in a transition country. Comparing today's institutional framework of water management with this normative concept, it reveals the most significant gaps between norm and reality, but also identifies progress towards IWRM. Recommendations on how to further develop Kyrgyz water governance towards IWRM are provided." (author's abstract

    Development of "in vitro-in vivo" correlation/relationship modeling approaches for immediate release formulations using compartmental dynamic dissolution data from "Golem" : a novel apparatus

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    Different batches of atorvastatin, represented by two immediate release formulation designs, were studied using a novel dynamic dissolution apparatus, simulating stomach and small intestine. A universal dissolution method was employed which simulated the physiology of human gastrointestinal tract, including the precise chyme transit behavior and biorelevant conditions. The multicompartmental dissolution data allowed direct observation and qualitative discrimination of the differences resulting from highly pH dependent dissolution behavior of the tested batches. Further evaluation of results was performed using IVIVC/IVIVR development. While satisfactory correlation could not be achieved using a conventional deconvolution based-model, promising results were obtained through the use of a nonconventional approach exploiting the complex compartmental dissolution data

    Value of Ascitic Lipids in the Differentiation between Cirrhotic and Malignant Ascites

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    Ascitic fluid concentrations of cholesterol, triglycerides and phospholipids, were compared with ascitic fluid total protein in 40 patients with chronic liver disease, 51patients with various neoplasms and 1 patient with cardiac failure. Seven patients withboth chronic liver disease and malignancy were considered separately. The first 54 patients (23 cirrhotic and 31 with malignancy) were used to determine median values and ranges and to define the most suitable cutoff concentrations between both groups. Median values for cholesterol (75 mg per dl), phospholipids (0.79 mmole per liter), triglycerides (75 mg per dl) and protein (3.8 gm per dl)were higher in malignant ascites compared to ascitic fluid concentrations of cholesterol (20 mg per dl), phospholipids (0.33 mmole per liter), triglycerides (51 mg per dl) and protein (1.9 gm per dl) in patients withcirrhosis. The best discrimination values were 48 mg per dl for cholesterol, 0.6 mmole per liter for phospholipids, 65 mg per dl for triglycerides and 2.5 gm per dl for protein. Application of these cutoff points to 38 subsequent patients (17 cirrhotic, 1 with cardiac failure and 20 with malignancy) revealed an efficiency of 86.8% for cholesterol, 86.8% for phospholipids, 68.4% for triglycerides and 79.0% for protein. From the data of all 92 patients, an efficiency of 92.3% forcholesterol, 79.4% for phospholipids, 72.8% for triglycerides and 79.4% for protein was calculated. We conclude that ascitic fluid cholesterol determination offers an excellent, cost-effective discrimination of ascites due to cirrhosis vs. ascites caused by malignancies
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