PDF superior Parallelization of the Motion Detection Stage in the H.263 Encoder -Edición Única

Parallelization of the Motion Detection Stage in the H.263 Encoder -Edición Única

Parallelization of the Motion Detection Stage in the H.263 Encoder -Edición Única

The main contributions of this thesis effort are: (1) the identification of H.263 code sections suitable for parallelization, (2) a parallelization framework for the H.263 (3) introduc[r]

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Modeling of DCT Coefficients in the H 264 Video Encoder Edición Única

Modeling of DCT Coefficients in the H 264 Video Encoder Edición Única

even when they are predicted using different reference frames. Due to this property, SP-frames can be used instead of I-frames in such applications as bitstream switching, splicing, random access, fast forward, fast backward, and error resilience/recovery. At the same time, since SP-frames unlike I-frames are utilizing motion-compensated predictive coding, they require significantly fewer bits than I-frames to achieve similar quality. In some of the mentioned applications, SI- frames are used in conjunction with SP-frames. An SI-frame uses only spatial prediction as an I-frame and still reconstructs identically the corresponding SP- frame, which uses motion-compensated prediction. (Karczewicz & Kurceren, 2003).
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Modeling of DCT Coefficients in the H.264 Video Encoder-Edición Única

Modeling of DCT Coefficients in the H.264 Video Encoder-Edición Única

even when they are predicted using different reference frames. Due to this property, SP-frames can be used instead of I-frames in such applications as bitstream switching, splicing, random access, fast forward, fast backward, and error resilience/recovery. At the same time, since SP-frames unlike I-frames are utilizing motion-compensated predictive coding, they require significantly fewer bits than I-frames to achieve similar quality. In some of the mentioned applications, SI- frames are used in conjunction with SP-frames. An SI-frame uses only spatial prediction as an I-frame and still reconstructs identically the corresponding SP- frame, which uses motion-compensated prediction. (Karczewicz & Kurceren, 2003).
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Parallelization of the motion detection stage in the H 263 encoder

Parallelization of the motion detection stage in the H 263 encoder

5-1: Iteration between all H.263 code with every part of its sections 5-2: First parallelization approach 5-3: Runtime for light and high level load 5-4: Speedup for light and heavy load[r]

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Three-dimensional generalized logarithmic spirals

Three-dimensional generalized logarithmic spirals

Roa and Pel´aez 7, 8 found that solving the equations of motion for the simple thrust profile found by Bacon 4 yields not only logarithmic spirals, but an entire family of solutions that they called generalized logarithmic spirals. The dynamics admit two integrals of motion, generalizations of the conservation of the energy and angular momentum. The spirals are endowed with a collection of properties that make them qualitatively similar to the Keplerian orbits. For example, the sign of the constant of the generalized energy classifies the spirals in elliptic, parabolic and hyperbolic. The spirals have been recently improved by introducing a control parameter, 9 and the spiral Lambert’s
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20 Lee mas

Multimedia news storytelling: Semiotic-narratological foundations

Multimedia news storytelling: Semiotic-narratological foundations

The concept of “multimedia syntax” (Salaverría, 2014) is related to “hypertextual syntax” (Díaz-Noci; Salaverría, 2003) or “hypertextual grammar” (Llombart, 1998). Their semiotic analysis implies “the identification of formal units and the determination of the norms that govern their integration into higher units” (Bobes-Naves, 1989, p. 83). In turn, from narra- tology, it involves analyzing different linguistic levels (Barthes, 1974), with which the story is constructed in a relationship of hierarchy, where there is a correlation between its parts, so that the whole acquires meaning integrated into a higher unit. In journalistic multimedia there is a combination of different linguistic codes that form a “digital macrodiscourse” (Alba- ladejo, 2011), establishing concordance of hyperlinks and differentiated linguistic codes - texts, sounds, photographs, vi- deos, illustrations, music, effects. It is a polypho-
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Wearable technology for occupational risk assessment: potential avenues for applications

Wearable technology for occupational risk assessment: potential avenues for applications

The latest estimate on occupational accidents pub- lished by International Labour Organization (ILO) in September 2017, shows that 2.78 million workers die each year from occupational accidents and occu- pational diseases. Occupational mortality represents 5% of the world total. The majority of work-related mortality comes from occupational diseases (2.4 mil- lion) 86.3% of the total. The remaining 13.7% is due to occupational accidents. Work-related injuries and illnesses result in the loss of 3.9% of world GDP, with an annual cost of 2680 billion €. In the case of the EU, the cost of work-related injuries and injuries accounts for 3.3% of GDP, 476 billion € per year. Occupational accidents and its costs can be signifi- cantly reduced by establishing and practicing good occupational health and safety policies (Hämäläinen et al. 2017).
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5 Lee mas

Analysis and design of an edge-technique-based Doppler wind lidar: practical assessment of a laboratory prototype

Analysis and design of an edge-technique-based Doppler wind lidar: practical assessment of a laboratory prototype

The range of wavelengths used by laser-radars, occupying in most of applications near- ultraviolet, visible and near-infrared frequency bands, determines some of their unique features as remote sensing instruments. At these frequencies, the electromagnetic radiation interacts in some cases strongly with the atmospheric constituents. Lidars, taking advantage of this interaction, can be used for deriving range-resolved information of the atmosphere state. Atmospheric science has indeed stood out as one of the main fields of application of lidar technologies. A manifold of atmospheric variables such as temperature, pressure, speed of the wind or content of aerosol particles, water vapour and trace gases, whose knowledge is important for understanding and modelling the complex processes that govern the atmospheric dynamics, have been successfully profiled using lidar instruments. Their main advantages with respect to the traditional in situ techniques, applied from sounding rockets or balloons for atmospheric profiling, are higher spatial and temporal resolution and the possibility of continuous monitoring. Radars are also used in atmospheric research and their capabilities are a good complement of lidar ones. While lidars, which need clean-air conditions to operate, are capable to measure gases and aerosols, radars rely on the scattering from atmospheric hydrometeors and are therefore better suited for rainfall monitoring, thunderstorm tracking or cloud profiling.
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164 Lee mas

The discursive construction of the public and the private spheres in media debates: the case of television talk shows

The discursive construction of the public and the private spheres in media debates: the case of television talk shows

In this view, besides the cognitive dimensión, communication and discourse also manifest an interactional dimensión. In other words, they are collectively managed, negotiated, and even [r]

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Human-computer interaction based on visual hand-gesture recognition using volumetric spatiograms of local binary patterns

Human-computer interaction based on visual hand-gesture recognition using volumetric spatiograms of local binary patterns

The detection stage searches in every frame of a video sequence potential hand poses using a binary Support Vector Machine classifier and Local Binary Patterns as feature vectors.. The[r]

12 Lee mas

A framework for implementing a Distributed Intrusion Detection System (DIDS) with interoperabilty and information analysis

A framework for implementing a Distributed Intrusion Detection System (DIDS) with interoperabilty and information analysis

With alerts reduced to a more relevant and manageable subset, the next step is determine wich alerts may be correlated. Intrusion correlation refers to the in- terpretation, combination and analysis of information from all available sources about the target system activity for the purpose of intrusion detection and re- sponse. The goal of the correlation process is to combine alerts that represent the independent detection of the same attack ocurrence by different intrusion detection agents. In fact, in our model the data can be collected from various sources, like firewalls, web server logs, NIDS, Host IDS (HIDS) and so on. The correlation of alerts produced by heterogeneous resources can provide a number of potential advantages. The only requisite is that the data are expressed in IDMEF format.
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10 Lee mas

The Politics of the Euro-Edición Única

The Politics of the Euro-Edición Única

at the international level. A state is powerful if it can influence the behavior of other states. The author noted that what really matters is not physical endowments – like the realist theory argues - but rather structures and relationships: who depends on whom and for what. Strange explains the difference between relational power – widely used by the realist approach – and structural power. On the one hand, relational power is the ability of A to get B to do something it would not otherwise do, it means to gain under the prevailing rules of the game (Strange, 1994). On the other hand, structural power is the ability to shape and determine the structures of the global political economy: the power to decide how things will be done, the power to shape frameworks within which states relate to each other (Strange, 1994), a definition that follows very closely the one provided by Lukes and his three-dimensional view of power. In this way, the notion of structural power in world politics, society and economy has liberated the study of international political economy from the realist tradition (Lawton et al., 2000).
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80 Lee mas

The Valency Structure Of English And Tatar Verbs Of Motion In The Comparative Aspect

The Valency Structure Of English And Tatar Verbs Of Motion In The Comparative Aspect

Daniel who has fallen in love with the band goes to Brussel to see them play. In these examples, the verbs yoriler and goes are combined with two obligatory (Sub - Mostafa belen Sherif, Daniel, and Ad - elgaga, to Brussel) and with one optional argument (Dest - balykka, to see). Therefore, the next, fifth valency version is transmitted using the verbs ‘yoriler’ and ‘goes’, which implement two required arguments (Sub, Ad) and one optional (Dest).

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TítuloParameter estimation in large scale systems biology models: a parallel and self adaptive cooperative strategy

TítuloParameter estimation in large scale systems biology models: a parallel and self adaptive cooperative strategy

Table 1 displays, for each benchmark and each method, the number of external iterations performed (line 7 in Algorithm 1), the average number of evaluations needed to achieve the VTR, the mean and standard deviation execution time of all the runs in the experiment and the speedup achieved versus the non-cooperative case (10-eSS). In these experiments, the computational load is not shared among processors. Therefore, the total speedup achieved over the np-eSS method depends on the impact that the cooperation among processes produces on achieving a good result, performing less evaluations and, hence, providing a better performance. We com- pare the CeSS method, that exchanges the information based on a time elapsed, and where the information to be exchanged is the complete RefSet, and the proposed saCeSS method, that exchanges the information driven by the quality of the solutions through a star topology using asynchronous communications and, thus, avoiding communication delays. Additionally, to better evaluate the efficiency of the self-adaptive procedure proposed, Table 1 also displays results for two different experiments with the saCeSS method: experiments where the self-adaptive pro- cedure was disabled, labeled as saCeSS(non-adaptive) in the table, that is, the settings of the eSS in the different islands were not dynamically tuned during the execu- tion; and, experiments where this procedure was enabled, allowing for the adaptive reconfiguration of the islands, labeled as saCeSS in the table.
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24 Lee mas

The representation of chivalry in The Knight's Tale

The representation of chivalry in The Knight's Tale

This is again a considerable departure from Boccaccio's versión, in which Arcite, with the identity of Pentheus, attempts at dissuading Palemón of the mistake of battling (cf. As in th[r]

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The colour of rhetoric in the contemporary agora

The colour of rhetoric in the contemporary agora

Having a workable system for categorizing political rhetoric, we then separately classified each statement. Following this, we compared our classifications of the 84 items and explained our reasoning. Three outcomes were possible: we could have agreed on classifications of black, white, or grey for the same reasons; for different reasons; or disagreed on classifications. When the latter two occurred, it provided useful information for altering our definition of the classification so that we agreed on our classification for the same reason. This was a useful hermeneutic process that provided greater construct validity for our classification system. For example, the description of black rhetoric in some instances required knowledge about whether a statement was true or not if classified for the reason of being dishonest. Thus, in the example provided in Text 5 below, it was necessary to have the information, which was later admitted, that Senator Evans had lied. Importantly, after discussing our reasons for classification in disputed cases and making necessary alterations to the definition, we were able to achieve unanimity on determining whether a statement represented white, black, or grey rhetoric. From this body of material, we then selected 12 examples of various types of rhetoric for this paper.
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EFFECTS OF SURFACE DIFFUSION OF REFLECTORS ON THE ACOUSTIC POWER FROM THE STAGE AREA

EFFECTS OF SURFACE DIFFUSION OF REFLECTORS ON THE ACOUSTIC POWER FROM THE STAGE AREA

The power output radiated from a sound source varies depending on the position of the source. This phenomenon has been observed in measurements of the acoustic power using a reverberation chamber; see, for example, references [1-3], and is caused by interference between the direct and the reflected waves. 4-7 Then, the frequency range affected by this phenomenon is restricted, which is relatively low. From this point of view, there have been some works regarding the design method for the layout of musical instruments for bass sounds. 8,9
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6 Lee mas

Towards fast HEVC encoding using heterogeneous architectures

Towards fast HEVC encoding using heterogeneous architectures

While all these encoding tools have a positive effect on the coding efficiency, they also have an impact on the computational complexity of the standard. Compared with H.264/MPEG-4 AVC, it has been estimated that the encoding complexity of HEVC is three or four times higher [5]. This becomes a serious limitation to the use of this standard in certain scenarios in which real-time encoding is a requirement. In fact, the computational complexity of the encoding process has become one of the most significant constraints in the implementation of HEVC in current devices. It is thus clear the importance of designing fast encoding algorithms for this standard, as it is the only way to ensure its feasibility and applicability. Accordingly, the research community is making intense efforts in this regard. Among all the novel encoding tools introduced in HEVC, it is worth mentioning the hierarchical block structure used to divide the pictures into partitions. This structure is called the coding tree unit (CTU), and can be subsequently divided into coding units (CUs), prediction units (PUs) and transform units (TUs). This wide range of possibilities provides great flexibility to the standard when adapting the partitions to the intrinsic features of the picture, which in turn results in higher coding efficiency. The process of determining the optimal partitioning requires, however, testing numerous block combinations. For this reason, many works have attempted to address the computational complexity of HEVC by omitting those combinations that are unlikely to provide the optimal results.
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"Another game in vew": the representation of the poet in The Faerie Queene

"Another game in vew": the representation of the poet in The Faerie Queene

Spenser develops Ariosto's image of the epic poem as a sea voyage, to fit the structure of his own work: the narrator compares his poem to a ship which lands some passengers in a harbo[r]

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The social status of /h/ in English

The social status of /h/ in English

dohtor, which was pronounced [’d]¡tcr]. The development of this word gave [’dZxtcr] and then [’d]¡tcr], [’d]tcr], [’d]:tcr], and [’d]:tcr(~)], where the original allophone of /h/, that is to say [¡] –which became [x] later on– has certainly been lost. However it was there in Old English and it is still there in another Germanic language: German. In this language the sentence Ich habe deine Tochter gesehen “I have seen your daughter”, is pronounced /iç ’hY:bc ‘dawnc ‘t]xtcr gc’ze:cn/, where we can clearly see that the velar fricative /x/ has been preserved. With the evidence provided by this, and regarding the phonetic development studied here, we could say that German has undergone less changes than English, where, at least, there seems to be a certain tendency to lose the sounds represented by the letter <h>.
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