Multi-non-binary turbo codes

International audienceThis paper presents a new family of turbo codes called multi-non-binary turbo codes (MNBTCs) that generalizes the concept of turbo codes to multi-non-binary (MNB) parallel concatenated convolutional codes (PCCC). An MNBTC incorporates, as component encoders, recursive and systematic multi-non-binary convolutional encoders. The more compact data structure for these encoders confers some advantages on MNBTCs over other types of turbo codes, such as better asymptotic behavior, better convergence, and reduced latency. This paper presents in detail the structure and operation of an MNBTC: MNB encoding, trellis termination, Max-Log-MAP decoding adapted to the MNB case. It also shows an example of MNBTC whose performance is compared with the state-of-the-art turbo code adopted in the DVB-RCS2 standard

Aspects of aerobic endurance in middle school students

The general, harmonious physical development of school youth is a major desideratum included among the aims of physical education promoted by all authors with concerns in this field, being the most important requirement of the ideal of physical education, a presence in any stage of design, planning, organization and development. this activity. In accordance with this task of great importance for school physical education, we mention that this paper aims primarily at the student, but also to improve the activities of teachers in the direction of achieving higher levels, a very important goal in general physical training of students and mainly the development / optimization of aerobic endurance. Goal: the role of this paper is to highlight the effects that “application paths” can generate as means oriented towards the development of aerobic endurance. Methods: In carrying out the research we mainly used the field test method, the observation method and the statistical-mathematical method. Results: The means used in the form of "application path" influence and demand at the same time the cardiovascular and respiratory systems and automatically lead to the increase of somato-functional indices of students

Romanian athletics in numbers-a brief analysis

Sport system is a very complex mechanism whose proper functioning depends on the efficient operation of each component. ”Functional requirements (a.n.: of a system) describe the desired end function of a system operating within normal parameters, so as to assure the design is adequate to make the desired product and the end product reaches its potential of the design in order to mett user expectations”. 1 The qualitative and quantitative evolution of some aspects that define the organization and functioning of the Romanian athletics system can be viable instruments for determining the potential/resources of evolution, as well as indicators for possible adaptive measures correlated with the tendencies. We have carried out a quantitative analysis of the evolution of some components of Romanian athletics system, of the number of clubs and athletes in the National Athletics Championships (by age/categories and events), the stability of the competitors over several years, and the evolution of recorded performances in order to identify progress and trends. The statistically processed informations, comes from the database of the Romanian Athletics Federation. 2 In this context, we mention that the period covered by the research (2009- 2017) was limited by the limited content of the mentioned electronic archive

Provide all the details that you can remember : assessing the quantity and quality of autobiographical retrieval

People asked to recall the memory of an event during testimony are encouraged to prioritize both quantity and quality – "the whole truth and nothing but the truth". Extensive research has shown that people can provide detailed, confident accounts that nevertheless prove to be inaccurate (Loftus, 1996). However, the question remains of how pressuring people to give confident and elaborate accounts of their memories subsequently changes these accounts. We conducted an experiment in which 51 participants provided accounts of autobiographical events and film plots (control condition), and later re-told these accounts under the instruction to retrieve more information. We measured the effects of task demands on the quantity (number of words and number of facts) and quality (confidence ratings) of information retrieved, as well as on the affective and cognitive language used during each account. Task demands at re-telling led to participants providing a greater amount of information, with their likelihood of doing so and their confidence in these newly communicated memory details linked to rumination tendencies and mood. These findings give insights into the cognitive processing of autobiographical memories, and provide a better understanding of the factors affecting eyewitness testimony

Winter activity of terrestrial isopods from thermal habitats in western Romania

Terrestrial isopods from warm shores neighboring the thermal waters from western Romania remain active in the winter. This phenomenon is registered in 35 habitats, affecting 12 species (Hyloniscus transsilvanicus, H. riparius, Haplophthalmus danicus, Trichoniscus sp., Androniscus roseus, Cylisticus convexus, Protracheoniscus politus, Trachelipus nodulosus, T. rathkii, Porcellio dilatatus, Armadillidium vulgare, A. versicolor), the most common being T. nodulosus. Females with a marsupium were observed in the cold season in the case of some small-sized species that are present in the immediate vicinity of the shores of thermal waters (A. roseus, H. riparius and H. transsilvanicus). The high temperatures of the thermal waters warm the surrounding terrestrial environment, affecting the life cycle of the terrestrial isopods

First genome edited poinsettias: targeted mutagenesis of flavonoid 3′-hydroxylase using CRISPR/Cas9 results in a colour shift

The CRISPR/Cas9 system is a remarkably promising tool for targeted gene mutagenesis, and becoming ever more popular for modification of ornamental plants. In this study we performed the knockout of flavonoid 3′-hydroxylase (F3′H) with application of CRISPR/Cas9 in the red flowering poinsettia (Euphorbia pulcherrima) cultivar ‘Christmas Eve’, in order to obtain plants with orange bract colour, which accumulate prevalently pelargonidin. F3′H is an enzyme that is necessary for formation of cyanidin type anthocyanins, which are responsible for the red colour of poinsettia bracts. Even though F3′H was not completely inactivated, the bract colour of transgenic plants changed from vivid red (RHS 45B) to vivid reddish orange (RHS 33A), and cyanidin levels decreased significantly compared with the wild type. In the genetically modified plants, an increased ratio of pelargonidin to cyanidin was observed. By cloning and expression of mutated proteins, the lack of F3′H activity was confirmed. This confirms that a loss of function mutation in the poinsettia F3′H gene is sufficient for obtaining poinsettia with orange bract colour. This is the first report of successful use of CRISPR/Cas9 for genome editing in poinsettia

Platelet rich fibrin as a gingival tissue regeneration enhancer.

Tissue regenerative procedures aim to enhance regeneration of altered tissue. Extensive research has been carried out in this area and all proposed procedures present limitations. In this context the area of platelet-rich fibrin (PRF) research has gained tremendous awareness in the latest years. PRF is a low-cost regenerative modality that facilitates soft tissue regeneration derived from 100% autologous sources. It forms a fibrin mesh that liberates growth factors in a slow and prolonged manner and also contains supra-physiological concentrations of leukocytes. Reports from the literature have suggested that these leukocyte-rich blood-preparations are capable of improving wound healing, diminishing post-operative pain, and additionally minimizing the risk of infection. In our article we present the first clinical case where PRF was used as a wound healing accelerator of gingival lesions in a chemical soft tissue burn after teeth whitening