Recognition Of Several Types Research Articles

Analysis of Video Game Players’ Emotions and Team Performance: An Esports Tournament Case Study

Video gaming and eSports is a quickly developing industry already involving billions of players worldwide. Gaming and eSports tournaments require strong mental abilities to avoid severe stress and other negative consequences upon completing the game. In this article, we report on the impact of emotions on a team performance. For this reason, we collect audio recordings and game logs from the players in real conditions at an eSports tournament. This data is further used in trained machine learning models for analysis of players' emotional conditions from the voice during the game. We considered recognition of several types of emotions as well as the background sounds. To do this, we trained 92.7% accuracy classifier of six most common classes of emotions and sounds in eSports audio and applied it to eSports data. As a result, we demonstrate that there is an opportunity to measure the eSports team's performance from the players' emotional conditions obtained from the voice communication. We found that there is a strong correlation among the performance of the team, communication between the players, and emotional sentiment of communication. The teams achieve much better results when they had much more internal conversations during the game.

Recognition of English vowels, consonants, words, and sentences for Chinese college students

The goals of this study were to first, investigate the recognition of several types of English speech sounds such as vowels, consonants, words, and sentences in quiet and long-term speech-shaped (LTSS) noise for Chinese college students; second, examine relationship among the perception of these speech materials, e.g., whether students with better sentence recognition also showed better phonemic perception. Speech stimuli included twelve isolated English vowels, twenty-one English consonants in the /aCa/ context, NU6 words, the coordinate response measure (CRM), Hearing in noise test (HINT) sentences, and IEEE sentences. Preliminary data analysis indicated that at the phonetic level, Chinese students performed significantly better in consonant identification than in vowel identification; at the word level, students did significantly with CRM than NU6; and at the sentence level, students had significantly higher recognition scores for HINT sentences than for IEEE sentences. The correlations among the recognition of these speech materials will examined and discussed. [Work supported by China National Natural Science Foundation 31628009.]

Saint John Baptistery in Florence (Italy): Studies for Conservation of the External Marble Cladding

Saint John’s Baptistery in Florence (Italy), dating back to the XI century, represents one of the most outstanding historical buildings in the city, and has been under the UNESCO patronage as Cultural Heritage since 1982. In recent years, in the frame of a conservation project, detailed studies and mapping of all the tiles covering the Baptistery have been developed. Based on a laser-scan survey, a detailed wireframe model of all the external sides, reporting all the tiles and decor, has been developed. This model was implemented into a 2D-GIS, georeferenced in real scale and spatial position. An in situ survey of all the tiles, ashlars, inlays and columns, made in contradiction by experts in historical ornamental stones, allowed the recognition of several types of marble in place. All these marbles have been analyzed and characterized as geometric, geological and historical data, and the information implemented into a GIS for obtaining a spatial geodatabase representing a “box” to store all information achieved. All these data are manageable by web through smartphone, tablet and PC for querying or updating, thus representing an effective management tool for further conservation of such important historical cultural buildings.

Primary Human Tumor Cells Expressing CD155 Impair Tumor Targeting by Down-Regulating DNAM-1 on NK Cells

The activating NK cell receptor DNAX accessory molecule-1 (DNAM-1) contributes to tumor immune surveillance and plays a crucial role in NK cell-mediated recognition of several types of human tumors, including ovarian carcinoma. Here, we have analyzed the receptor repertoire and functional integrity of NK cells in peritoneal effusions from patients with ovarian carcinoma. Relative to autologous peripheral blood NK cells, tumor-associated NK cells expressed reduced levels of the DNAM-1, 2B4, and CD16 receptors and were hyporesponsive to HLA class I-deficient K562 cells and to coactivation via DNAM-1 and 2B4. Moreover, tumor-associated NK cells were also refractory to CD16 receptor stimulation, resulting in diminished Ab-dependent cellular cytotoxicity against autologous tumor cells. Coincubation of NK cells with ovarian carcinoma cells expressing the DNAM-1 ligand CD155 led to reduction of DNAM-1 expression. Therefore, NK cell-mediated rejection of ovarian carcinoma may be limited by perturbed DNAM-1 expression on tumor-associated NK cells induced by chronic ligand exposure. Thus, these data support the notion that tumor-induced alterations of activating NK cell receptor expression may hamper immune surveillance and promote tumor progression.

Gene selection for cancer classification

PurposeThe purpose of this paper is to discover the most important genes generated by the gene expression arrays, responsible for the recognition of particular types of cancer.Design/methodology/approachThe paper presents the analysis of different techniques of gene selection, including correlation, statistical hypothesis, clusterization and linear support vector machine (SVM).FindingsThe correctness of the gene selection is proved by mapping the distribution of selected genes on the two‐coordinate system formed by two most important principal components of the PCA transformation. Final confirmation of this approach are the classification results of recognition of several types of cancer, performed using Gaussian kernel SVM.Originality/valueThe results of selection of the most significant genes used for the SVM recognition of seven types of cancer have confirmed good accuracy of results. The presented methodology is of potential use in practical application in bioinformatics.

Identification of a damaged-DNA binding domain of the XPA protein.

The XPA (xeroderma pigmentosum group A) protein is a zinc metalloprotein consisting of 273 amino acids which binds preferentially to UV- or chemical carcinogen-damaged DNA, suggesting that it is involved in the recognition of several types of DNA damage during nucleotide excision repair processes. Here we identify a DNA binding domain of the XPA protein. The region of the XPA protein responsible for preferential binding to DNA damaged by UV or cis-diammine-dichloroplatinum(II) (cisplatin) is contained within a truncated derivative of the XPA protein, MF122, consisting of 122 amino acids and containing a C4 type zinc finger motif. CD (circular dichroism) measurements of the MF122 protein showed that it has a helix-rich secondary structure, suggesting that it is a discretely folded, functional mini-domain. The MF122 protein should be useful for structural investigation of the XPA protein and of its interaction with damaged DNA.

Assessment of right ventricular outflow tract in children by two-dimensional echocardiography using a new subcostal view Angiocardiographic and morphologic correlative study

Evaluation of the right ventricular (RV) outflow tract in congenital heart disease is extremely important for surgical management. Therefore, the value of 2-dimensional echocardiography (2-D echo) to assess the RV outflow tract was studied using a new approach: the subcostal elongated right oblique view. Twenty normal children and 49 children with congenital heart disease, aged 1 day to 11 years, were studied. Significant pulmonary infundibular obstruction was present in 22 patients with conotruncal malformations. To obtain the subcostal elongated right oblique view from the short-axis view at the aortic valve level, the transducer was slightly rotated clockwise with an anterior angulation of about 30° so that the ascending aorta was seen in its long axis, providing an image similar to that obtained by a right ventriculogram in the elongated right anterior oblique view. The deviation of infundibular septum was appreciated by measurement of the angle α, defined by the long axis of the infundibular septum and the plane of aortic cusps. This view could be obtained in 64 patients (92%). In correlation with angiographic or anatomic data, the subcostal elongated right oblique view permitted recognition of several types of RV outflow tract: type I—normally formed RV outflow tract; type II—disorganized RV outflow tract with obstruction (α <90°); type III and IV—disorganized RV outflow tract with obstruction (α >90°). This view could visualize the crista supraventricularis in type I, but also the anatomic components of RV outflow tract that may contribute to obstruction in the other types: infundibular septum, septoparietal trabeculations and trabecula septomarginalis. The subcostal elongated right oblique view was superior to standard 2-D echo views in imaging the RV outflow tract anatomy and defining the severity and type of infundibular obstruction. Thus, 2-D echo using the subcostal elongated right oblique view provides a safe, noninvasive technique for the serial evaluation of RV outflow tract in children both before and after surgical correction.

The arrhythmias of dual-chamber cardiac pacemakers and their management.

The field of cardiac pacing has developed exponentially in the past several years. The widespread use of atrioventricular synchronous pacemakers has resulted in the recognition of several types of pacemaker-associated arrhythmias. Certain of these arrhythmias follow asynchronous stimulation of either cardiac chamber; others are the result of the artificial bypass tract created with dual-chamber sensing and pacing. All the arrhythmias, however, are associated with normal pacemaker function.

Small Intestine Bacterial Overgrowth

The gastrointestinal tract proximal to the distal ileum is usually sparsely populated with bacteria. When overgrowth of bacteria in the small intestine is accompanied by nutrient malabsorption and clinical manifestations of weight loss and malnutrition, the setting has been called the stasis, stagnant loop, or blind loop syndrome. Since the publication of a number of excellent general reviews of the subject several years ago, 1–4 there has been an increased understanding of some of the pathophysiologic events accompanying overgrowth of bacteria in the small intestine. In particular attention has been drawn to the potential addition of mucosal injury to disturbances of the intraluminal environment in the altered handling of various nutrients. In addition, clinical recognition of the entity has increased with the use of noninvasive screening tests, with improvement in culture technique, and with increased recognition of several types of disordered intestinal motility predisposing to overgrowth. The purpose of this review will be to (a) analyze recent developments in the understanding of this syndrome, putting them into perspective with the previously reviewed material; (b) point out the clinical ramifications of the recent information, especially with the perspective that most conditions predisposing to bacterial overgrowth are lifelong, once present; and (c) suggest several areas where future investigation might prove fruitful in furthering our understanding of the pathophysiology and management of small intestine bacterial overgrowth.

Noise in Traveling-Wave Tubes

After a discussion of gain, noise factor and attenuation in conventional traveling-wave tubes (twt), a dispersive twt is described and experimental results given. Examination of results and theory lead to the recognition of several types of partition noise as the cause of much of the noise in traveling-wave tubes. These are analyzed and approximate expressions for their magnitude are obtained. Noise due to electron-wave type amplification and thermal noise originating in the resistive part of the helix are also discussed. Experiments are described.