Regulation of flow by an irrigation reservoir taking into account storm precipitation data from river basin weather stations

2020 ◽  
pp. 33-37
Author(s):  
Il'yas Veliev ◽  
Vitaliy Il'inich ◽  
Aleksandr Kavalli
Keyword(s):  
River Flow ◽  
Irrigation System ◽  
Water Reservoir ◽  
Scientific Paper ◽  
Storage Management ◽  
Rice Fields ◽  
Short Term ◽  
Irrigation Reservoir ◽  
Weather Stations ◽  
The Stability

The scientific paper is devoted to development the methodology of the rules for control of water reservoirs in the south of the European territory of Russia (ETR), the relevance of that has determined by necessary for more reliable and efficient of river flow regulation. The studies has based on the data of synchronous observations at the region weather stations and of corresponding runoff to the Krasnodar reservoir, it provides rice fields. A correlation analysis between rainfall at weather stations and the corresponding flood volumes have gave possibility to evaluate their rate of dependence. So a predictor weather stations were chosen, which allowed to select decisions in respect to control by water resource of the reservoir. The analysis of traditional and improved rules for control of the reservoir has carried out using a simulation model of its functioning. It has based on the balance formula for water reservoir, taking into account the logical conditions of the traditional dispatch rules for control by reservoir, which designed to compensate for water deficits in rice fields and to be safe during catastrophic floods. The model makes it possible to change the rules of water storage management taking into account short-term forecasts of precipitations and runoff for modeling according to five-day period (pentad) discreteness. The obtained results confirmed the hypothesis about the possibility of reducing the likelihood of emergencies during the catastrophe of catastrophic floods with the stability of the planned water consumption of the irrigation system.

SIMULATION MODELING OF RUNOFF REGULATION BY AN IRRIGATION WATER RESERVOIR UNDER THE CONDITIONS OF LOW-WATER

2020 ◽  
pp. 106-111
Author(s):  
I.G. VELIEV ◽  
◽  
V.V. ILJINICH ◽  
A.V. PERMINOV
Keyword(s):  
Reservoir Operation ◽  
Simulation Modeling ◽  
River Flow ◽  
Water Reservoir ◽  
Reservoir Management ◽  
Water Yield ◽  
Short Term ◽  
Runoff Regulation ◽  
Comparison Of The Results ◽  
Operation Schedule

The article is dealt with the analysis of the Krasnodar water reservoir operation carried out under various options for regulating river flow. The considered options for water reservoir management were implemented in accordance with the current operation schedule and new regulations developed on the basis of simulation modeling using the IMIT-BALANS model which uses optimization elements. Previously this model was adapted by means of a more detailed discreteness of intra-annual intervals. Comparison of the results of the reservoir operation in relation to the deficient planned water yield for dry year conditions showed that the developed new regulations for reservoir management for low water years are much more effective. Their use by the decision-maker (DM) would reduce deficit of water consumption provided that short-term and medium-term runoff forecasts are used.

Aggregation prone regions in antibody sequences raised against Vibrio cholerae: A bioinformatic approach

2020 ◽  
Vol 15 ◽  
Author(s):  
Zakia Akter ◽  
Anamul Haque ◽  
Md. Sabir Hossain ◽  
Firoz Ahmed ◽  
Md Asiful Islam
Keyword(s):  
Vibrio Cholerae ◽  
Binding Sites ◽  
Bioinformatic Analysis ◽  
Antigen Binding ◽  
Short Term ◽  
Protein Database ◽  
The Stability ◽  
Bioinformatic Approach ◽  
Self Aggregation ◽  
Complementarity Determining Region

Background: Cholera, a diarrheal illness causes millions of deaths worldwide due to large outbreaks. Monoclonal antibody used as therapeutic purposes of cholera are prone to be unstable due to various factors including self-aggregation. Objectives: In this bioinformatic analysis, we identified the aggregation prone regions (APRs) of different immunogens of antibody sequences (i.e., CTB, ZnM-CTB, ZnP-CTB, TcpA-CT-CTB, ZnM-TcpA-CT-CTB, ZnP-TcpA-CT-CTB, ZnM-TcpA, ZnP-TcpA, TcpA-CT-TcpA, ZnM-TcpA-CT-TcpA, ZnP-TcpA-CT-TcpA, Ogawa, Inaba and ZnM-Inaba) raised against Vibrio cholerae. Methods: To determine APRs in antibody sequences that were generated after immunizing Vibrio cholerae immunogens on Mus musculus, a total of 94 sequences were downloaded as FASTA format from a protein database and the algorithms such as Tango, Waltz, PASTA 2.0, and AGGRESCAN were followed to analyze probable APRs in all of the sequences. Results: A remarkably high number of regions in the monoclonal antibodies were identified to be APRs which could explain a cause of instability/short term protection of anticholera vaccine. Conclusion: To increase the stability, it would be interesting to eliminate the APR residues from the therapeutic antibodies in a such way that the antigen binding sites or the complementarity determining region loops involved in antigen recognition are not disrupted.

The stability and short-term fluctuation in serum oxytocinase activity in pregnancy

1989 ◽  
Vol 28 (4) ◽  
pp. 331-335
Author(s):  
A.A. Edebiri ◽  
D.S. Mack ◽  
D.J. McDonald ◽  
J. Philips
Keyword(s):  
Short Term ◽  
The Stability ◽  
Term Fluctuation ◽  
In Pregnancy

Remaking Medicare: The Voucher Myth

1998 ◽  
Vol 28 (1) ◽  
pp. 29-46
Author(s):  
Jonathan Oberlander
Keyword(s):  
Consumer Choice ◽  
Baby Boom ◽  
Market Competition ◽  
The Elderly ◽  
Medicare Beneficiaries ◽  
Short Term ◽  
Medicare Program ◽  
The Stability ◽  
Voucher System

There is growing enthusiasm for transforming Medicare into a voucher system. Advocates claim vouchers would increase the health care choices available to Medicare beneficiaries, reduce the regulatory burden on the federal government, and promote the benefits of fair market competition. In addition, some analysts contend vouchers are the only feasible solution to Medicare's short-term financing problems and the long-term “crisis” of the retirement of the baby-boom generation. The author argues against these claims. Vouchers would not work as advertised by proponents because of the limitations of risk-adjustment methods and unrealistic assumptions about consumer choice. Moreover, the elderly and disabled Medicare population is ill-suited to cope in a competitive insurance system. Implementation of vouchers would therefore pose a threat to both the health of beneficiaries and the stability of the Medicare program. The implications of this analysis for Medicare reform are discussed.

scholarly journals Changes in short term river flow regulation and hydropeaking in Nordic rivers

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Faisal Bin Ashraf ◽  
Ali Torabi Haghighi ◽  
Joakim Riml ◽  
Knut Alfredsen ◽  
Jarkko J. Koskela ◽  
...  
Keyword(s):  
River Flow ◽  
Flow Regulation ◽  
Short Term

scholarly journals A SLR Pre-Processing Algorithm Based on Satellite Signature Effect

2021 ◽  
Vol 11 (19) ◽  
pp. 8880
Author(s):  
Bowen Guan ◽  
Cunbo Fan ◽  
Ning An ◽  
Ricardo Cesar Podesta ◽  
Dra Ana Pacheco ◽  
...  
Keyword(s):  
Mean Value ◽  
Observation Data ◽  
Short Term ◽  
Error Sources ◽  
Effect Model ◽  
The Mean ◽  
The Stability ◽  
First Time ◽  
Satellite Signature Effect

As one of the major error sources, satellite signature effect should be reduced or even erased from the distribution of the post-fit residuals to improve the ranging precision. A simulation of satellite signature effect removal process for normal point algorithm is conducted based on a revised model of satellite response, which fully considers the structural and distribution characteristics of retroreflectors. In order to eliminate both long-term and short-term satellite signature effect, a clipping method for SLR data processing is proposed by defining the clipping location as 5.6 mm away from the mean value of the long-term fit residuals to select effective returns for normal points. The results indicate that, compared to normal points algorithm, the RMS per NP of LAGEOS-1 observation data processed by the clipping method is reduced from 62.90 ± 9.9 mm to 56.07 ± 4.69 mm, and the stability of RMS is improved 53%. This study improves the satellite signature effect model and simulates the fluctuation of normal points caused by satellite signature effect for the first time. The new method based on the simulation of satellite signature effect has stronger robustness and applicability, which can further minimize the influence of satellite signature effect on the SLR production and significantly improve the data property.

scholarly journals Analisa Rasio Keuangan Likuiditas, Profitabilitas dan Solvabilitas Terhadap Kebijakan Pembayaran Dividen Penyertaan

2013 ◽  
Vol 1 (2) ◽  
pp. 125-136
Author(s):  
Anna Setiana ◽  
Indah Melania
Keyword(s):  
Cost Efficiency ◽  
Selling Price ◽  
Operational Cost ◽  
Short Term ◽  
Current Ratio ◽  
Financial Ratio ◽  
Net Profit ◽  
The Stability ◽  
Solvency Ratio ◽  
Improve Cost

The purpose of this study is to find out the effect of the company’s performance to the welfare of shareholders by way of measuring the level of the company’s financial ratio expected having influence toward  the dividend level yielded. Based on the result of the study, the liquidity of PT Estika Yasakelola can be said has not satisfied yet because, observed from current ratio and quick ratio, PT Estika Yasakelola has found it difficult to pay short term debt that has been due date. Viewed in general, the profitability percentage has not been  satisfactory as well. It’s due to  the percentage of net profit margin  is too low, with the result that income left to cover the operational cost is too small. To improve the performance of of the company, PT Estika Yasakelola has to work more efficiently. The company must seek to improve cost efficiency by lowering cost items or increasing product selling price without reducing the competitiveness of the company. The description of solvency ratio fluctuation above reflects that the stability increase of the company in managing its dect is due to outstanding credit decrease caused by on time credit payment and because of the company keep continue to expand with its own fund. The result of this research shows that the company should improve its performance more,  work more efficiently, reduce cost items or increase product selling price so that the company will be able to reduce operational costs. PT Estika yasakelola must be able to manage the fund, so that the company’s profit increases more and more and the company will be able to survive unwaveringly. The management must be able to maintain the sharekolders’ trust. Therefore, the  level of shareholders’ welfare can be guaranteed.   Keywords: analysis of financial liquidity ratio; profitability, and solvency

scholarly journals Formulated Mathematical Model for Delayed Particle Flow in Cascaded Sub-Surface Water Reservoirs with Validation on River Flow

2018 ◽  
Author(s):  
Ombaki Richard ◽  
Kerongo Joash ◽  
Okwoyo M. James
Keyword(s):  
Mathematical Model ◽  
Time Delay ◽  
Surface Water ◽  
Discrete Time ◽  
River Flow ◽  
Water Reservoir ◽  
Point Sources ◽  
Water Reservoirs ◽  
Discrete Time Delay ◽  
Mixing Problem

Pollution of sub-surface water reservoirs mainly rivers and streams through contaminated water point sources (CWPS) was studied. The objective was to formulate a discrete time delay mathematical model which describes the dynamics of reservoir pollution using mixing-problem processes that involve single species contaminants such as nitrates, phosphorous and detergents. The concentration  of pollutants was expressed as a function of the inflow and outflow rates using the principle for the conservation of mass. Systems of ODEs generated from principles of mixing problems were refined into a system of DDEs so that the concentration of pollutant leaving the reservoir at time would be determined at some earlier instant, for the delay. The formulated model is a mathematical discrete time delay model which would be used to describe the dynamics of sub-surface water reservoir pollution. The results from the validation of the model were analyzed   to determine how time delays in the mixing processes affect the rate of particle movement in water reservoirs.

Periodic breathing in the mouse

2002 ◽  
Vol 92 (3) ◽  
pp. 1133-1140 ◽  
Author(s):  
Fang Han ◽  
Shyam Subramanian ◽  
Edwin R. Price ◽  
Joseph Nadeau ◽  
Kingman P. Strohl
Keyword(s):  
Recombinant Inbred ◽  
Periodic Breathing ◽  
Inbred Strains ◽  
Genetic Influences ◽  
Short Term ◽  
Cycle Number ◽  
Term Potentiation ◽  
Genetic Mechanisms ◽  
The Stability ◽  
Recombinant Mice

The hypothesis was that unstable breathing might be triggered by a brief hypoxia challenge in C57BL/6J (B6) mice, which in contrast to A/J mice are known not to exhibit short-term potentiation; as a consequence, instability of ventilatory behavior could be inherited through genetic mechanisms. Recordings of ventilatory behavior by the plethsmography method were made when unanesthetized B6 or A/J animals were reoxygenated with 100% O2 or air after exposure to 8% O2 or 3% CO2-10% O2 gas mixtures. Second, we examined the ventilatory behavior after termination of poikilocapnic hypoxia stimuli in recombinant inbred strains derived from B6 and A/J animals. Periodic breathing (PB) was defined as clustered breathing with either waxing and waning of ventilation or recurrent end-expiratory pauses (apnea) of ≥2 average breath durations, each pattern being repeated with a cycle number ≥3. With the abrupt return to room air from 8% O2, 100% of the 10 B6 mice exhibited PB. Among them, five showed breathing oscillations with apnea, but none of the 10 A/J mice exhibited cyclic oscillations of breathing. When the animals were reoxygenated after 3% CO2-10% O2 challenge, no PB was observed in A/J mice, whereas conditions still induced PB in B6 mice. (During 100% O2 reoxygenation, all 10 B6 mice had PB with apnea.) Expression of PB occurred in some but not all recombinant mice and was not associated with the pattern of breathing at rest. We conclude that differences in expression of PB between these strains indicate that genetic influences strongly affect the stability of ventilation in the mouse.

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