INTEGRATED SYNOPTICAL METHOD FOR CALCULATING ASSIMILATION CAPACITY OF SEA WATERS

Pollution of sea waters is one of major attributes of coastal industrial centers and the norming of such emissions is one of major countermeasures. The assimilation capacity of sea waters is a major factor relevant at norming and planning of outflows into sea waters. At present time the synoptical method has been developed, which doesn’t require carrying out long time and repeated observing of the level of pollution of sea waters. This method has formed the basis for developing the integrated synoptical method for calculating sea water assimilation capacity. The suggested method provides for division of the sea waters into separated homogenous water masses. The aim of the study is to develop an inverse integrated synoptical method allowing synthesizing of such an optimum order for loading separate water masses with pollutants upon, at which the calculated total value of assimilation capacity would reach its maximum. The article shows the possibility of utilization of known synoptical method for determining assimilation capacity of sea waters in the inverse order, i.e. for calculating the maximum value of pollutant put into the fixed zone of sea waters, upon a condition of reaching the given amount of assimilation capacity and absence of essential negative effect on ecosystem. The task of calculating an optimum regime function of discrete type, upon which the integrated value of assimilation capacity would reach the maximum value, has been formulated. The solution of analogue equivalent of the formed optimization task is carried out using the Euler equation for a non-conditional variation optimization task, taking into account the accepted limitation condition. The recommendations on optimum loading of different sea water zones with determined type of pollutant have been given.

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LUMINESCENCE OF THE BLACK SEA MICROSCOPIC FUNGI CULTURES

Proceedings of International Conference "Managinag risks to coastal regions and communities in a changinag world" (EMECS'11 - SeaCoasts XXVI) ◽

10.31519/conferencearticle_5b1b946ac0fc74.55415483 ◽

2017 ◽

Author(s):

Olga Mashukova ◽

Yuriy Tokarev ◽

Nadejda Kopytina ◽

...

Keyword(s):

Fresh Water ◽

Black Sea ◽

Ethyl Alcohol ◽

Light Emission ◽

Sea Water ◽

Control Culture ◽

Chemical Stimulation ◽

The Black Sea ◽

The Given ◽

First Time

We studied for the first time luminescence characteristics of the some micromycetes, isolated from the bottom sediments of the Black sea from the 27 m depth. Luminescence parameters were registered at laboratory complex “Svet” using mechanical and chemical stimulations. Fungi cultures of genera Acremonium, Aspergillus, Penicillium were isolated on ChDA medium which served as control. Culture of Penicillium commune gave no light emission with any kind of stimulation. Culture of Acremonium sp. has shown luminescence in the blue – green field of spectrum. Using chemical stimulation by fresh water we registered signals with luminescence energy (to 3.24 ± 0.11)•108 quantum•cm2 and duration up to 4.42 s, which 3 times exceeded analogous magnitudes in a group, stimulated by sea water (p < 0.05). Under chemical stimulation by ethyl alcohol fungi culture luminescence was not observed. Culture of Aspergillus fumigatus possessed the most expressed properties of luminescence. Stimulation by fresh water culture emission with energy of (3.35 ± 0.11)•108 quantum•cm2 and duration up to 4.96 s. Action of ethyl alcohol to culture also stimulated signals, but intensity of light emission was 3–4 times lower than under mechanical stimulation. For sure the given studies will permit not only to evaluate contribution of marine fungi into general bioluminescence of the sea, but as well to determine places of accumulation of opportunistic species in the sea.

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Tritium distributions in Weddell Sea water masses

Journal of Geophysical Research Atmospheres ◽

10.1029/jc083ic12p06192 ◽

1978 ◽

Vol 83 (C12) ◽

pp. 6192 ◽

Cited By ~ 21

Author(s):

Robert L. Michel

Keyword(s):

Sea Water ◽

Weddell Sea ◽

Water Masses

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Assessment of Research and Development Financing Based on the Strategies in EU: Case of Sweden, Slovakia and Romania

Sustainability ◽

10.3390/su13158628 ◽

2021 ◽

Vol 13 (15) ◽

pp. 8628

Author(s):

Emília Duľová Spišáková ◽

Barbora Gontkovičová ◽

Emil Spišák

Keyword(s):

European Union ◽

Research And Development ◽

Economic Reform ◽

The European Union ◽

2030 Agenda ◽

Processing Data ◽

Europe 2020 ◽

Europe 2020 Strategy ◽

Long Time ◽

The Given

Research and development have been of interest to the European Union for a long time. This topic is also underlined in economic reform agendas and plans that have the form of strategies with clearly set targets. The article deals with the issue of financing R&D activities from the perspective of the share of expenditure to GDP, the total amount of funds spent on R&D, the share of expenditure per capita, and the structure of expenditure. The aim is to analyze and compare development in the field of R&D financing in selected countries of the European Union with emphasis on achieving the Europe 2020 target and to point out the expected development of the indicator for the first years of the validity of the 2030 Agenda for Sustainable Development. During the processing of the article, mathematical and statistical methods (regression and correlation analysis) were used in addition to standard logic methods intended for processing data and drawing conclusions (synthesis, induction). The final evaluates the achievement of the target in the field of R&D financing in accordance with the target of the Europe 2020 strategy and, using regression, predicts the development of the given indicator for coming years.

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Use of immunocorrectors in patients with chronic lymph leukemia

Kazan medical journal ◽

10.17816/kazmj65309 ◽

1986 ◽

Vol 67 (2) ◽

pp. 99-101

Author(s):

V. Ya. Shustov ◽

N. A. Afanasyeva ◽

P. P. Kuznetsov ◽

A. K. Myshkina

Keyword(s):

Immune System ◽

Outpatient Treatment ◽

Infectious Complications ◽

Chronic Lymphatic Leukemia ◽

Cytostatic Drugs ◽

Ability To Work ◽

Lymphatic Leukemia ◽

Long Time ◽

Negative Effect

Chronic lymphatic leukemia is second only to acute leukemia in the frequency of infectious complications. In most cases, severe infectious complications are the cause of death in these patients. Modern chemotherapy makes it possible to preserve the ability to work and the life expectancy of patients for a long time. However, the negative effect of cytostatic drugs on the already altered immune system leads to an even greater suppression of immunity and an increase in the number of infectious complications. The search for new ways to combat infections has shown the advisability of long-term outpatient treatment with antibacterial drugs.

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Prophet Inequalities for Independent and Identically Distributed Random Variables from an Unknown Distribution

Mathematics of Operations Research ◽

10.1287/moor.2021.1167 ◽

2021 ◽

Author(s):

José Correa ◽

Paul Dütting ◽

Felix Fischer ◽

Kevin Schewior

Keyword(s):

Stopping Time ◽

Random Variables ◽

Optimal Solution ◽

Random Order ◽

Secretary Problem ◽

Maximum Value ◽

Optimal Stopping Theory ◽

Long Time ◽

Object Of Study ◽

Independent And Identically Distributed

A central object of study in optimal stopping theory is the single-choice prophet inequality for independent and identically distributed random variables: given a sequence of random variables [Formula: see text] drawn independently from the same distribution, the goal is to choose a stopping time τ such that for the maximum value of α and for all distributions, [Formula: see text]. What makes this problem challenging is that the decision whether [Formula: see text] may only depend on the values of the random variables [Formula: see text] and on the distribution F. For a long time, the best known bound for the problem had been [Formula: see text], but recently a tight bound of [Formula: see text] was obtained. The case where F is unknown, such that the decision whether [Formula: see text] may depend only on the values of the random variables [Formula: see text], is equally well motivated but has received much less attention. A straightforward guarantee for this case of [Formula: see text] can be derived from the well-known optimal solution to the secretary problem, where an arbitrary set of values arrive in random order and the goal is to maximize the probability of selecting the largest value. We show that this bound is in fact tight. We then investigate the case where the stopping time may additionally depend on a limited number of samples from F, and we show that, even with o(n) samples, [Formula: see text]. On the other hand, n samples allow for a significant improvement, whereas [Formula: see text] samples are equivalent to knowledge of the distribution: specifically, with n samples, [Formula: see text] and [Formula: see text], and with [Formula: see text] samples, [Formula: see text] for any [Formula: see text].

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Long-term investigation of phosphorus removal by iron electrocoagulation in small-scale wastewater treatment plants

Water Science & Technology ◽

10.2166/wst.2018.402 ◽

2018 ◽

Vol 78 (6) ◽

pp. 1304-1311 ◽

Cited By ~ 3

Author(s):

I. Mishima ◽

M. Hama ◽

Y. Tabata ◽

J. Nakajima

Keyword(s):

Wastewater Treatment ◽

Phosphorus Removal ◽

Wastewater Treatment Plants ◽

Phosphorus Release ◽

Small Scale ◽

Operational Conditions ◽

Long Time ◽

Negative Effect ◽

Iron Electrolysis

Abstract Small-scale wastewater treatment plants (SWTPs), called Johkasou, are widely used as decentralized and individual wastewater treatment systems in sparsely populated areas in Japan. Even in SWTPs, nutrients should be removed to control eutrophication. An iron electrolysis method is effective to remove phosphorus chemically in SWTPs. However, it is necessary to determine the precise conditions under which phosphorus can be effectively and stably removed in full scale SWTPs for a long period. Therefore, long-term phosphorus removal from SWTPs was investigated and optimum operational conditions for phosphorus removal by iron electrolysis were analyzed in this study. Efficient phosphorus removal can be achieved for a long time by adjusting the amount of iron against the actual population equivalent. The change of the recirculation ratio had no negative effect on overall phosphorus removal. Phosphorus release to the bulk phase was prevented by the accumulated iron, which was supplied by iron electrolysis, resulting in stable phosphorus removal. The effect of environmental load reduction due to phosphorus removal by iron electrolysis was greater than the cost of power consumption for iron electrolysis.

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THE STATIC OPTIMIZATION TASK OF OPTIMAL DESIGN OF NONLINEAR ELECTRONIC SCHEME

10.46813/2019-121-109 ◽

2019 ◽

pp. 109-115

Author(s):

Didmanidze Ibraim ◽

Donadze Mikheil

Keyword(s):

Optimal Design ◽

Optimality Criteria ◽

Pareto Optimal Solutions ◽

Optimal Solutions ◽

Design Task ◽

Optimization Task ◽

Minimum Capacity ◽

Optimal Values ◽

The Given ◽

Selection Of

The article deals with such an important selection of the elements of electronic scheme of the given conﬁguration, when the certain requirements of technical task are satisﬁed and at the same time the selected optimality criteria reach the extreme value. The gives task has been solved by the method of one-criterion optimization, in particular, the method of center gravity. To formalize the given scheme we have compiled a mathematical model of optimization, which considers the requirements of technical task. The optimal design task of the presented electronic scheme was brought to the task of multi criteria optimization. The computational experiments have been resulted in the Pareto-optimal solutions, from which there was selected a compromise on that corresponds to the minimum capacity, required by the scheme. According to the optimal values of resistors, we have conducted a computerized analysis of the transient process of the given electronic scheme with the help of a computer program Electronics Workbench.

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Application of Latent Dirichlet Allocation (LDA) for clustering financial tweets

E3S Web of Conferences ◽

10.1051/e3sconf/202129701071 ◽

2021 ◽

Vol 297 ◽

pp. 01071

Author(s):

Sifi Fatima-Zahrae ◽

Sabbar Wafae ◽

El Mzabi Amal

Keyword(s):

Language Processing ◽

Latent Dirichlet Allocation ◽

Sentiment Classification ◽

Research Areas ◽

Preprocessing Method ◽

Long Time ◽

Standard Text ◽

The Given ◽

Dirichlet Allocation

Sentiment classification is one of the hottest research areas among the Natural Language Processing (NLP) topics. While it aims to detect sentiment polarity and classification of the given opinion, requires a large number of aspect extractions. However, extracting aspect takes human effort and long time. To reduce this, Latent Dirichlet Allocation (LDA) method have come out recently to deal with this issue.In this paper, an efficient preprocessing method for sentiment classification is presented and will be used for analyzing user’s comments on Twitter social network. For this purpose, different text preprocessing techniques have been used on the dataset to achieve an acceptable standard text. Latent Dirichlet Allocation has been applied on the obtained data after this fast and accurate preprocessing phase. The implementation of different sentiment analysis methods and the results of these implementations have been compared and evaluated. The experimental results show that the combined uses of the preprocessing method of this paper and Latent Dirichlet Allocation have an acceptable results compared to other basic methods.

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WATER MASSES CHARACTERISTICS AT THE SANGHIE TALAUD ENTRY PASSAGE OF INDONESIAN THROUGHFLOW USING INDEX SATAL DATA 2010

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.28930/jitkt.v6i2.9027 ◽

2015 ◽

Vol 6 (2) ◽

Author(s):

Ivonne M Radjawane ◽

Paundra P Hadipoetranto

Keyword(s):

North Pacific ◽

Water Mass ◽

Sea Water ◽

Core Layer ◽

South Pacific ◽

New Guinea ◽

Water Masses ◽

Coastal Current ◽

Indonesian Throughflow ◽

Pacific Water

ABSTRACT Measurement of ocean physical parameters using the CTD was conducted by deep water expedition INDEX-SATAL 2010 (Indonesian Expedition Sangihe-Talaud) in July-August 2010. The aim of this study was to determine the characteristics of water masses around the Sangihe Talaud Water where there was an entry passage of Indonesian throughflow (ITF) at the west pathway that passed through the primary pathway i.e., the Sulawesi Sea and Makassar Strait and the secondary pathway (east pathway) that passed through the Halmahera Sea. The analyses were performed by the method of the core layer and was processed with software Ocean Data View (ODV). The results showed that in the Sangihe Talaud waters there was a meeting water masses from the North Pacific and the South Pacific. The water mass characteristics in main pathway through the Sulawesi Sea was dominated by surface and intermediate North Pacific water masses and carried by the Mindanao Currents. While the Halmahera Sea water mass was dominated by surface and intermediate South Pacific water masses carried by the New Guinea Coastal Current that moved along the Papua New Guinea and Papua coast enters to the Halmahera Sea. Keywords: Index-Satal 2010, Northern Pacific Water Masses, Southern Pacific Water Masses, Sangihe Talaud

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Edge (m,k)-choosability of graphs

Discrete Mathematics Algorithms and Applications ◽

10.1142/s1793830922500252 ◽

2021 ◽

Author(s):

P. Soorya ◽

K. A. Germina

Keyword(s):

Connected Graph ◽

Matching Number ◽

Graph Theoretic ◽

Maximum Value ◽

Choice Number ◽

The Given ◽

Simple Connected Graph

Let [Formula: see text] be a simple, connected graph of order [Formula: see text] and size [Formula: see text] Then, [Formula: see text] is said to be edge [Formula: see text]-choosable, if there exists a collection of subsets of the edge set, [Formula: see text] of cardinality [Formula: see text] such that [Formula: see text] whenever [Formula: see text] and [Formula: see text] are incident. This paper initiates a study on edge [Formula: see text]-choosability of certain fundamental classes of graphs and determines the maximum value of [Formula: see text] for which the given graph [Formula: see text] is edge [Formula: see text]-choosable. Also, in this paper, the relation between edge choice number and other graph theoretic parameters is discussed and we have given a conjecture on the relation between edge choice number and matching number of a graph.

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