Исследование температурного поля пневматического молотка

Представлены результаты экспериментального исследования изменения температуры поверхности рубильного пневматического молотка М-6 по времени при рубке в различных режимах стальной полосы и плиты, чугунной плиты

Влияние неопределенности при расчёте средневзвешенного пластового давления на оценку запасов газового месторождения методом материального баланса

Ключевые слова: материальный баланс, аудит запасов, газ, средневзвешенное давление, сеноманская залежь, неопределенность в определении среднего давления, синтетическая модель. Объектом исследования является степень неопределенности средневзвешенного пластового давления газового месторождения Цель работы – сравнительный анализ методов определения среднего давления, их неопределенности, влияющие на оценку запасов газового месторождения методом материального баланса. В процессе исследования были изучены: материальный баланс для газового месторождения; способы усреднения пластового давления; неопределенности в определении средневзвешенного пластового давления; специальные программные продукты- 슫Петрель슻, 슫Сёрфер슻. В результате исследования были получены: сравнительные характеристики методовKey words: material balance, audit of reserves, gas, average pressure, senoman formation, uncertainty in average pressure estimation, synthetic model. The object of research is uncertainty in average reservoir pressure estimation. The aim of research – ranking of methods of average pressure estimation, their uncertainties that affect the gas field OGIP estimation by the methods of material balance application. In the process of research the following topics were studied: material balance for gas filed; methods of formation pressure averaging; uncertainties in average pressure estimation; “Petrel” and “Surfer” program products. The obtained results are: ranking of result of averaging methods; the comparison of OGIP between geological model and OGIP provided by material balance; the analysi

A 14-year prospective study of autonomic nerve function in Type 1 diabetic patients: association with nephropathy.

Aims Prospective studies of autonomic nerve function are rare. We have followed the progression of autonomic dysfunction in relation to nephropathy over 14 years in Type 1 diabetic patients. Methods Autonomic nerve function was assessed by heart-rate responses to deep breathing (E/I ratio) and tilting (acceleration and brake indices) and by the postural blood pressure reaction in 58 patients, 43 of whom were reassessed after 14 years. Nephropathy was evaluated by the degree of albuminuria (albuminuria > 20 µg/min or > 0.03 g/24 h) and glomerular filtration rate (51Cr-EDTA plasma clearance). The acceleration index had deteriorated after 7 years (P = 0.0155), whereas the E/I ratio (P = 0.0070) and the diastolic postural blood pressure reaction (P = 0.0054) had deteriorated 14 years after the baseline examination (age-corrected values). All those with albuminuria at the third examination showed signs of autonomic neuropathy at baseline (10 of 10) compared with only nine of 22 without (P = 0.0016). Multiple regression analysis showed that the association between autonomic dysfunction and future albuminuria was due to the E/I ratio. In addition, individuals with an abnormal postural diastolic blood pressure fall (n = 7) at baseline showed a greater fall in glomerular filtration rate more than others 7-14 years later [29 (16.5) ml/min/1.72 m2 vs. 11 (9) ml/min/1.72 m2; P = 0.0074]. Conclusion Autonomic nerve function had deteriorated after 14 years. Autonomic neuropathy and abnormal postural diastolic blood pressure falls at baseline were associated with future renal complications

Data-Driven Audio Feature Space Clustering for Automatic Sound Recognition in Radio Broadcast News

This is an Open Access article published by World Scientific Publishing Company. It is distributed under the terms of the Creative Commons Attribution 4.0 (CC-BY) License. Further distribution of this work is permitted, provided the original work is properly cited. T. Theodorou, I. Mpoas, A. Lazaridis, N. Fakotakis, 'Data-Driven Audio Feature Space Clustering for Automatic Sound Recognition in Radio Broadcast News', International Journal on Artificial Intelligence Tools, Vol. 26 (2), April 2017, 1750005 (13 pages), DOI: 10.1142/S021821301750005. © The Author(s).In this paper we describe an automatic sound recognition scheme for radio broadcast news based on principal component clustering with respect to the discrimination ability of the principal components. Specifically, streams of broadcast news transmissions, labeled based on the audio event, are decomposed using a large set of audio descriptors and project into the principal component space. A data-driven algorithm clusters the relevance of the components. The component subspaces are used by sound type classifier. This methodology showed that the k-nearest neighbor and the artificial intelligent network provide good results. Also, this methodology showed that discarding unnecessary dimension works in favor on the outcome, as it hardly deteriorates the effectiveness of the algorithms.Peer reviewe

Adaptation of plasminogen activator sequences to known protease structures

AbstractThe sequences of urokinase (UK) and tissue-type plasminogen activator (TPA) were aligned with those of chymotrypsin, trypsin, and elastase according to their ‘structurally conserved regions’. In spite of its trypsin-like specificity UK was model-built on the basis of the chymotrypsin structure because of a corresponding disulfide pattern. The extra disulfide bond falls to cysteines 50 and 111d. Insertions can easily be accommodated at the surface. As they occur similarly in both, UK and TPA, a role in plasminogen recognition may be possible. Of the functional positions known to be involved in substrate or inhibitor binding, Asp 97, Lys 143 and Arg 217 (Leu in TPA) may contribute to plasminogen activating specificity. PTI binding may in part be impaired by structural differences at the edge of the binding pocket

The influence of stereotypes about old age on the perception of elderly employees’ labor activity

In this article the problem of increasing retirement age in terms of age discrimination and creating conditions encouraging elderly people to continue to work is discussed. This paper presents a study of stereotypes that affect students of management specialties in Russian institutions of higher education between the ages of 20 to 25 years old. The stereotype is investigated in the context of emotionally colored image of reality simplifying the process of perceiving it. The correlation between the students’ existing stereotypes about elderly people and their perception of older employees has been conducted. As a result, 5 stereotypes that exist in young people have been defined. An analysis of the words chosen by students to describe the elderly shows little diversity in young people’s perception of them. Lexical analysis shows that in the Russian language there are practically no concepts which allow creating a positive image of the elderly. The influence of the stereotypes on the perception of elderly people in terms of employment shows that older specialists are perceived as people with experience and knowledge but these experience and knowledge are irrelevant to the present

Учет оплаты труда на примере ООО «Клининговая компания Моррис»

В работе рассмотрены теоретические аспекты начисления заработной платы, начисления и удержания. Приведена практическая реализация на примере ООО. Выявлены ошибки и предложены рекомендации предприятию.The paper considers the theoretical aspects of payroll, accrual and retention. The practical implementation of the example of LLC. Errors were identified and recommendations made to the enterprise