End-to-End Speech Synthesis for Tibetan Multidialect

The research on Tibetan speech synthesis technology has been mainly focusing on single dialect, and thus there is a lack of research on Tibetan multidialect speech synthesis technology. This paper presents an end-to-end Tibetan multidialect speech synthesis model to realize a speech synthesis system which can be used to synthesize different Tibetan dialects. Firstly, Wylie transliteration scheme is used to convert the Tibetan text into the corresponding Latin letters, which effectively reduces the size of training corpus and the workload of front-end text processing. Secondly, a shared feature prediction network with a cyclic sequence-to-sequence structure is built, which maps the Latin transliteration vector of Tibetan character to Mel spectrograms and learns the relevant features of multidialect speech data. Thirdly, two dialect-specific WaveNet vocoders are combined with the feature prediction network, which synthesizes the Mel spectrum of Lhasa-Ü-Tsang and Amdo pastoral dialect into time-domain waveform, respectively. The model avoids using a large number of Tibetan dialect expertise for processing some time-consuming tasks, such as phonetic analysis and phonological annotation. Additionally, it can directly synthesize Lhasa-Ü-Tsang and Amdo pastoral speech on the existing text annotation. The experimental results show that the synthesized speech of Lhasa-Ü-Tsang and Amdo pastoral dialect based on our proposed method has better clarity and naturalness than the Tibetan monolingual model.

Formation of the phenotype “epilepsy–autism” in childhood

The combination of autistic spectrum disorders (ASD) with epilepsy is one of the most common neuropsychiatric comorbidities, which occurs with a frequency of up to 46 %. Such a high frequency is explained by the similarity of the pathophysiological mechanisms of each of the nosologies development. The common basis for both epileptogenesis and the development of ASD is the anomalies of neural communication mediated by the inversion of neurotransmission. In the formation of the epilepsy–autism phenotype the most significant is impairment of the departments responsible for the verbal-mediated social functioning. Such disorders are manifested in the lag of mental functions development, as well as in the epileptiform activity forming and epileptic seizures triggering. The epilepsy – autism comorbid phenotype core is represented by forms with an established genetic defect associated with structural pathology of the CNS. However, other ways of forming such a phenotype are also possible. Thus, in the epileptic or epileptiform encephalopathies picture there are often symptoms of ASD called an acquired epileptic neuropsychological syndrome. On the other hand, ASD (or the pervasive developmental disorder semiotics) may develop against the epileptiform changes background. In such cases, autistic epileptiform (in case of clinical seizures–epileptic) regression is diagnosed. Our concept of the epilepsy–autism phenotype forming is based on a detailed comparison of the etiology and pathogenesis of epilepsy and ASD. It is presented in the original cyclic sequence form. The variability of the epilepsy–autism phenotype is also presented in the form of the diagram explaining the perspective of each of the nosologies relationship.

Topological transition in measurement-induced geometric phases

The state of a quantum system, adiabatically driven in a cycle, may acquire a measurable phase depending only on the closed trajectory in parameter space. Such geometric phases are ubiquitous and also underline the physics of robust topological phenomena such as the quantum Hall effect. Equivalently, a geometric phase may be induced through a cyclic sequence of quantum measurements. We show that the application of a sequence of weak measurements renders the closed trajectories, hence the geometric phase, stochastic. We study the concomitant probability distribution and show that, when varying the measurement strength, the mapping between the measurement sequence and the geometric phase undergoes a topological transition. Our finding may impact measurement-induced control and manipulation of quantum states—a promising approach to quantum information processing. It also has repercussions on understanding the foundations of quantum measurement.

A Note on the Linear Cycle Cover Conjecture of Gyárfás and Sárközy

A linear cycle in a $3$-uniform hypergraph $H$ is a cyclic sequence of hyperedges such that any two consecutive hyperedges intersect in exactly one element and non-consecutive hyperedges are disjoint. Let $\alpha(H)$ denote the size of a largest independent set of $H$.We show that the vertex set of every $3$-uniform hypergraph $H$ can be covered by at most $\alpha(H)$ edge-disjoint linear cycles (where we accept a vertex and a hyperedge as a linear cycle), proving a weaker version of a conjecture of Gyárfás and Sárközy.

Radar Communication Integrated Waveform Design Based on OFDM and Circular Shift Sequence

Based on the orthogonal frequency division multiplexing (OFDM) technique, an intelligent waveform is designed, which is suitable for simultaneously performing data transmission and radar sensing. In view of the inherent high peak-to-mean envelope power ratio (PMERP) and poor peak-to-side-lobe ratio (PSLR) problems in the OFDM based radar and communication (RadCom) waveform design, we propose two technologies to deal with that. To be specific, we adopt Gray code technology to reduce the PMERP and simultaneously choose an optimal cyclic sequence to improve the PSLR of RadCom waveform. In our method, the optimal cyclic sequence is dynamically generated to continuously provide the best waveform according to the change of communication data. In addition, to meet the requirements of different radar detection tasks, two simple methods are utilized to adjust the bandwidth of RadCom waveform. To verify the advantages of the designed waveform, we conduct several simulation experiments to compare with some existing RadCom waveforms. The results show that our designed RadCom waveform can simultaneously achieve lower PMERP and higher PSLR. In addition, our designed RadCom waveform has a thumbtack type fuzzy function and shows the good ability to do multitarget detection.

PROCESS OF MANAGEMENT DECISION-MAKING AT THE REGIONAL LEVEL ON THE BASIS OF INFORMATION ADVISING SYSTEM

Author's experience of studying of managerial de-cision-making features by managers of the regional government on the example of the Bryansk region is presented in the article, the information approach al-lowing to increase efficiency of decision-making on the basis of information advising system is offered. The author defines decision-making process at the regional level as a cyclic sequence of managers’ ac-tions of the regional government aimed at solving tasks. The assessment of features of managerial deci-sion-making at the regional level was carried out by direct observation method. Labor duties, main functio-nality, a zone of managers’ responsibility of elementa-ry, middle and top management of the Government of the Bryansk region have been studied for this purpose. So, in process of management decision-making at the regional level managers should rely on own profes-sional skills, last experience, intuition. Information, which is a basis for decision-making, is formed by the external environment, and, respectively, is characte-rized by increased complexity, heterogeneity and dis-crepancy. When tasks are difficult and vaguely formu-lated the reliance only on intuition increases the risk of incorrect or non-optimal decision-making. Thus, auto-mation of decision-making support is the way of opti-mization of administrative activity. Use of the information advising system is defined by the author as a science-practical approach with support of decision-making at the regional level because it is based on processing of a large amount of information using statistical methods, method of expert evaluations, fuzzy sets, etc. Thus, formation of a management decision com-plex proposed by the information advising system al-lows to increase the accuracy and reliability of recom-mendations, and favorably differs from the decisions made by means of the traditional methods based on an intuition of the managing director or on a concept of "common sense".

A method for estimating apparent displacement vectors from time-lapse seismic images

Reliable estimates of vertical, inline, and crossline components of apparent displacements in time-lapse seismic images are difficult to obtain for two reasons. First, features in 3D seismic images tend to be locally planar, and components of displacement within the planes of such features are poorly resolved. Second, searching directly for peaks in 3D crosscorrelations is less robust, more complicated, and computationally more costly than searching for peaks of 1D crosscorrelations. I estimate all three components of displacement with a process designed to mitigate these two problems. I address the first problem by computing for each image sample a local phase correlation instead of a local crosscorrelation. I address the second problem with a cyclic sequence of searches for peaks of correlations computed for lags constrained to one of the three image axes.

ON GRAPH-THEORETIC IDENTIFICATIONS OF ADINKRAS, SUPERSYMMETRY REPRESENTATIONS AND SUPERFIELDS

In this paper, we discuss off-shell representations of N-extended supersymmetry in one dimension, i.e. N-extended supersymmetric quantum mechanics, and following earlier work on the subject, we codify them in terms of graphs called Adinkras. This framework provides a method of generating all Adinkras with the same topology, and so also all the corresponding irreducible supersymmetric multiplets. We develop some graph theoretic techniques to understand these diagrams in terms of a relatively small amount of information, namely, at what heights various vertices of the graph should be "hung." We then show how Adinkras that are the graphs of N-dimensional cubes can be obtained for superfields satisfying constraints that involve superderivatives. This dramatically widens the range of supermultiplets that can be described using the superspace formalism and also organizes them. Other topologies for Adinkras are possible, and we show that it is reasonable that these are also the result of constraining superfields using superderivatives. We arrange the family of Adinkras with an N-cubical topology, and so also the sequence of corresponding irreducible supersymmetric multiplets, in a cyclic sequence, which we call the main sequence. We produce the N = 1 and N = 2 main sequences in detail, and indicate some aspects of the situation for higher N.