This paper presents analysis of still image IP transmission in the tactical network. The analysis is provided through the delivery time, packets sent/received/lost and the display of the images after the reconstruction on the receiving side. Image transmission is analyzed through multiple scenarios - without and with compression, without and in the presence of jamming. It has been shown that delivery time can be significantly reduced by data compression, without significant loss of visual information. It has also been shown that for analyzing the quality of transmission and usefulness of received information, it is better to use the display of reconstructed images than the degree of packet losses. Furthermore, it has been shown that in the tactical networks of limited bandwidth, it is very important to comply bit rates from source of information to the end user, and in this way to avoid buffer memory overflow and packet losses.
Abstract Prospects for democracy in multi-ethnic societies are generally more promising if elections are not mere ethnic censuses, in which people vote predominantly for co-ethnic parties and candidates. But what institutions facilitate or hinder ethnic voting? Unlike past studies, this article explores ethnic voting by conducting a natural experiment (rather than surveys or laboratory experiments). It examines the case of Fribourg, a bilingual (French/German) Swiss canton where elections at different levels of government, within the same electoral district, are held under both majoritarian and proportional systems. Coupled with the high territorial homogeneity of the linguistic groups, this unique setting allows us to conduct a robust empirical analysis of voter behaviour. We find that cross-ethnic voting is significantly more frequent in multi-member majoritarian elections than in list-PR elections or in two-member majoritarian elections. Our results yield qualified support to the centripetalist approach to electoral design in multi-ethnic societies, that favours majoritarian systems, rather than to the consociational school that advocates proportional representation.
A new sensitive analytical method using capillary electrophoresis with laser induced fluorescence (CE‐LIF) was applied for the simultaneous detection of DNA methylation and hydroxymethylation levels in human cancers of different origin. DNA hydroxymethylation, measured as 5‐hydroxymethylcytosine (5hmC) levels, was decreased in gliomas with mutation in the isocitrate dehydrogenase 1 (IDH1) gene when compared to IDH1‐wildtype gliomas. Independent from IDH1 mutation, 5hmC levels were decreased in lung carcinomas when compared to normal lung tissue. Reduced DNA hydroxymethylation was also observed upon dedifferentiation in cultured murine embryonic fibroblasts. Our data show that reduced DNA hydroxymethylation is related to cellular dedifferentiation and can be detected in various types of cancers, independent from the IDH1 mutation status. Quantitative determination of altered 5hmC levels may therefore have potential as a biomarker linked to cellular differentiation and tumorigenesis.
J Public Affairs. 2019;19:e1720. https://doi.org/10.1002/pa.1720 To date, there is no comprehensive treatment of interests and interest groups in Bosnia and Herzegovina (BiH). This article seeks to fill that gap. It does so by explaining that interest groups reflect the country's complex political system with multiple levels of power sharing along societal cleavages. Political parties are the major power centers, and the link between ethnicity and party allegiance is most significant in defining the role of interest groups. The result is a pillarized (separate, intragroup) and bifurcated group system with 3 separate interest group subsystems with little interchange between them. This fragmentation has been challenged by international institutional organizations promoting multiethnic interests. Nevertheless, with the persistence of many informal interests, the group system is stymied in moving toward an integrated system, a development that is key to strengthening BiH's consociational democracy.
One of the most important tasks associated with theoretical prediction of performance of explosives by thermochemical calculation is accurate description of the equation of state (EOS) of detonation products. Widely used empirical equations of state, such is Becker-Kistiakowsky-Wilson (BKW EOS), have limited accuracy when it comes to energetic materials with unusual elemental composition. -Replacing empirical EOS with more sophisticated and theoretically based EOS, the accuracy of thermochemical calculations can be increase. We present an equation of state of detonation products based on the Buckingham a-exponential-6 equation (Exp-6) and an analytical representation of the excess thermodynamic functions for classical fluid mixture. The excess Helmholtz free energy, as a function of reduced density, temperature, and stiffness parameter, is calculated applying KLRR perturbation statistical mechanical theory, and so obtained data are approximated by multinomial coefficients. The interpolation domain is defined so to describe accurately the range of pressures, densities, and temperatures relevant for detonation studies. The equation is incorporated in EXPLO5 thermochemical code. Good agreement with Monte-Carlo calculations is obtained, as well as between calculated and experimental detonation parameters for a series of explosives.
ISO 20000-1:2011 is the most important standard for the management of IT services. ISO 27001:2013 is the most important standard for information security. This paper compares these two standards in the real environment of IPTV/VoIP service of Telecom operator in Bosnia and Herzegovina. This paper produces a new improved version of ISO 20000 standard in the field of information security based on recommendations from ISO 27001 standard in the field of information security. A new improved version of ISO 20000 standard is implemented in a real environment of Telecom operator and it produced a better results then the previous model.
This paper compares two project management methodologies PRINCE 2 and Scrum in a case study of digital business transformation. There is no universal methodology, that could work for all projects, but digital transformation or Industry 4.0 indicates new management strategies, for which right framework is almost mandatory. Paper also emphasizes that digital transformation of an organisation can not be just an IT project. In case study we discuss budget, time and value for a project. We analyzed project of digital transforamation of insurance company, where we had case study of issuing a travel insurance policy. PRINCE 2 definitely provides wide range of guidelines that help managing project, but all the documentation demands certain knowledge, usually more time, and not lot of flexibility in project control. On the other side, Scrum does not provide enough documentation, and it’ better for small projects, with fast delivery needs. Every methodology goal is efficiency and effectiveness, and we try to give guidelines which one to use, based on simple comparison.
This paper presents a nonlinear flatness-based approach for simultaneous control of the active and reactive power of a self-excited induction generator (SEIG) in wind energy conversion system (WECS). The proposed flatness-based controller (FBC) generates the control outputs which are applied to the current-controlled voltage source inverter (CC-VSI) and gearbox. A differential flatness theory is exploited to derive the flat outputs of the SEIG generator as well as to prove that the overall system is differentially flat one. This enables a transformation of this system into the linear canonical (Brunovsky) form and facilitates the design of the controller. The design methodology of the flatness-based controller relies on using a flux-based mathematical model of the SEIG in rotating $dq$ reference frame. The set points of the active and reactive powers are converted into system variables using a high-level reference trajectory generator (HLRTG). The proposed approach provides an efficient decoupled control for both the active and reactive power of the SEIG generator. The efficiency of the proposed control system is confirmed through simulation experiments.
Abstract Aims Raised blood pressure (BP) is the biggest contributor to mortality and disease burden worldwide and fewer than half of those with hypertension are aware of it. May Measurement Month (MMM) is a global campaign set up in 2017, to raise awareness of high BP and as a pragmatic solution to a lack of formal screening worldwide. The 2018 campaign was expanded, aiming to include more participants and countries. Methods and results Eighty-nine countries participated in MMM 2018. Volunteers (≥18 years) were recruited through opportunistic sampling at a variety of screening sites. Each participant had three BP measurements and completed a questionnaire on demographic, lifestyle, and environmental factors. Hypertension was defined as a systolic BP ≥140 mmHg or diastolic BP ≥90 mmHg, or taking antihypertensive medication. In total, 74.9% of screenees provided three BP readings. Multiple imputation using chained equations was used to impute missing readings. 1 504 963 individuals (mean age 45.3 years; 52.4% female) were screened. After multiple imputation, 502 079 (33.4%) individuals had hypertension, of whom 59.5% were aware of their diagnosis and 55.3% were taking antihypertensive medication. Of those on medication, 60.0% were controlled and of all hypertensives, 33.2% were controlled. We detected 224 285 individuals with untreated hypertension and 111 214 individuals with inadequately treated (systolic BP ≥ 140 mmHg or diastolic BP ≥ 90 mmHg) hypertension. Conclusion May Measurement Month expanded significantly compared with 2017, including more participants in more countries. The campaign identified over 335 000 adults with untreated or inadequately treated hypertension. In the absence of systematic screening programmes, MMM was effective at raising awareness at least among these individuals at risk.
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