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Atmospheric and Oceanic Science Letters 2014年第5期7卷 464-470页

作者： Clemente Augusto Souza TANAJURA Alex Novaes SANTANA Davi MIGNAC Leonardo Nascimento LIMA konstantin BELYAEV XIE Ji-Ping Physics Institute Federal University of Bahia (UFBA) Salvador 40170-280 Brazil Oceanographic Modeling and Observation Network (REMO) Center for Research in Geophysics and Geology Federal University of Bahia (UFBA) Salvador 40170-280 Brazil Ocean Sciences Department University of California Santa Cruz (UCSC) USA Graduate Program in Geophysics Federal University of Bahia (UFBA) Salvador Brazil Shirshov Institute of Oceanology Russian Academy of Sciences (SHIRSHOV/RAS) Moscow Russia Institute of Atmospheric Physics(IAP) Chinese Academy of Sciences (CAS)

The first version of the Brazilian Oceanographic Modeling and Observation Network(REMO)ocean data assimilation system into the Hybrid Coordinate Ocean Model(HYCOM)(RODAS_H) has recently been constructed for research and operational *** system is based on a multivariate Ensemble Optimal Interpolation(EnOI) scheme and considers the high frequency variability of the model error co-variance *** EnOI can assimilate sea surface temperature(SST),satellite along-track and gridded sea level anomalies(SLA), and vertical profiles of temperature(T) and salinity(S) from Argo. The first observing system experiment was carried out over the Atlantic Ocean(78°S–50°N,100°W–20°E) with HYCOM forced with atmospheric reanalysis from 1 January to 30 June 2010. Five integrations were performed, including the control run without assimilation. In the other four, different observations were assimilated: SST only(A_SST); Argo T-S profiles only(A_Argo); along-track SLA only(A_SLA); and all data employed in the previous runs(A_All). The A_SST,A_Argo, and A_SLA runs were very effective in improving the representation of the assimilated variables, but they had relatively little impact on the variables that were not assimilated. In particular, only the assimilation of S was able to reduce the deviation of S with respect to observations. Overall, the A_All run produced a good analysis by reducing the deviation of SST, T, and S with respect to the control run by 39%, 18%, and 30%, respectively,and by increasing the correlation of SLA by 81%.

关键词：资料同化海洋模式系统海水表面温度运行控制观测网络协方差矩阵 T-S曲线

Mathematical Study of the Dynamics of the Development of HIV

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Journal of Applied Mathematics and Physics 2016年第1期4卷 66-72页

作者： Gabriel Iyam Ogban konstantin Andreyevich Lebedev Department of Computational Mathematics and Informatics Kuban State University Krasnodar Russia

Over the history of humankind, they is no disease that has received so much attention as the HIV infection and mathematical models have been applied successfully to the investigation of HIV dynamics. It is, however, of note that, few of these investigations are able to explain the observation that host cell counts reduce while viral load increases as the infection progress. Also, various clinical studies of HIV infection have suggested that high T-cell activation levels are positively correlated with rapid disease development in untreated patients. This activation might be a major reason for the depletion of cells observed in most cases of long-term untreated HIV infection. In this paper, we use a simple mathematical model without treatment to investigate the stability of the system and compare the results with that obtained numerically by the use of MATHCAD. Our model which is a system of differential equations describing the interaction of the HIV and the immune system is divided into three compartments: uninfected CD4T cells, infected CD4Tcells and the virus population. This third compartment includes an extra source of the virus since it is believed that the virus in the blood constitute less than 2% of the total population. We obtain a linearization of the original system, and using Routh-Hurwitz condition for the non-linear system, the critical points are unstable.

关键词： Model HIV CD4+T Cell Infected Cell Uninfected Cell Stability Linearization Equilibrium

Thermodynamic Properties of Li-LiH (LiD, LiT) Systems. The Phase Diagram

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Open Journal of Physical Chemistry 2012年第3期2卷 141-146页

作者： konstantin A. Yakimovich Tatiana Biryukova Joint Institute for High Temperatures Russian Academy of Sciences Moscow Russia The Institute of Informatics Problems Russian Academy of Sciences Moscow Russia

The paper presents a comprehensive critical review and detailed analysis of the literature, published in the field of the phase diagram solution Li-LiH (LiD, LiT). Special attention is paid to the completeness of the source information on the paper’s topic resulting in an extended reference list. Particularly, paper reviews rarely used sources including little-known publications from research centers, proceedings of the international scientific meetings and dissertations. These publications were more thoroughly analyzed in order to make the information available to the scientific society.

关键词： Diagram Phase Equilibrium Lithium Hydride Deuteride

Nutrition and Immunity

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Nutrition and Immunity

A Direct Effective Viscosity Approach for Modeling and Simulating Bingham Fluids with the Cumulant Lattice Boltzmann Method

中华医学会第十一届全国营养支持学术会议

作者： konstantin Mayer University of Giessen Lung Center Pulmonary and Critical Care Medicine

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Open Journal of Fluid Dynamics 2021年第1期11卷 34-54页

作者： Martin Geier konstantin Kutscher Manfred Krafczyk Institute for Computational Modeling in Civil Engineering TU Braunschweig Braunschweig Germany

Modeling of fluids with complex rheology in the lattice Boltzmann method (LBM) is typically realized through the introduction of an effective viscosity. For fluids with a yield stress behavior, such as so-called Bingham fluids, the effective viscosity has a singularity for low shear rates and may become negative. This is typically avoided by regularization such as Papanastasiou’s method. Here we argue that the effective viscosity model can be re-interpreted as a generalized equilibrium in which no violation of the stability constraint is observed. We implement a Bingham fluid model in a three-dimensional cumulant lattice Boltzmann framework and compare the direct analytic effective viscosity/generalized equilibrium method to the iterative approach first introduced by Vikhansky which avoids the singularity in viscosity that can arise in the analytic method. We find that both methods obtain similar results at coarse resolutions. However, at higher resolutions the accuracy of the regularized method levels off while the accuracy of the direct method continuously improves. We find that the accuracy of the proposed direct method is not limited by the singularity in viscosity indicating that a regularization is not strictly necessary.

关键词： Lattice Boltzmann Method Bingham Fluids Generalized Equilibrium

Development of a Remotely Controlled Testing Platform with Low-drag Air-ventilated Hull

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Journal of Marine Science and Application 2015年第1期14卷 25-29页

作者： konstantin I. Matveev Nicholaus I. Perry Alexander W. Mattson Christopher S. Chaney School of Mechanical and Materials Engineering Washington State University Pullman WA 99164-2920 USA

这份报纸探讨发展并且有创新的通气空气的壳的一个遥远地控制的船平台严峻。轮船壳的下侧上的空气洞的申请是一答应为减少水动力学的工具拖和污染物质排出物和增加的海洋的交通效率。尽管有这个概念潜力，设计优化和新奇空气洞轮船的高... 详细信息

这份报纸探讨发展并且有创新的通气空气的壳的一个遥远地控制的船平台严峻。轮船壳的下侧上的空气洞的申请是一答应为减少水动力学的工具拖和污染物质排出物和增加的海洋的交通效率。尽管有这个概念潜力，设计优化和新奇空气洞轮船的高效的操作仍然是一个挑战性的问题。赫尔建设和模型规模空气洞船的传感器乐器学在纸被描述。壳的模块化的结构允许容易的修正，和一个电的推进单位启用自己推动的操作。船经由一个收音机传播系统遥远地被控制。起始的测试的结果被报导，包括在几的戳，速度，和气流率装载条件。构造平台能被用于优化空气洞系统并且测试另外的创新的壳图案。这个系统能也被开发进一只高效的无人的船。

关键词：测试平台远程控制低阻力通风空气开发船体结构传输系统

GIS-Approach to Estimate Ground Transport Accessibility of Forest Resources (Case Study: Novosibirsk Region, Siberian Federal District, Russia)

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Journal of Geographic Information System 2020年第5期12卷 451-469页

作者： Ekaterina Podolskaia Dmitriy Ershov konstantin Kovganko Laboratory of Forest Ecosystems Monitoring Center for Forest Ecology and Productivity Russian Academy of Sciences Moscow Russia

In the big forest countries, there is an actual challenge of accessing the forests for their resources, operational wildfire management, and economic estimations for various purposes. In Russia, there are two ways to access the forests: by air and by ground means. The first way is quite expensive for any country. The second one is less expensive but has the spatial planning challenges to create access routes by existing public roads and forest glades. Regional authorities and firefighting departments are paying attention to the access by ground means, but there is a certain room to improve their management and cooperation methods on a limited budget. These tasks could be solved by GIS-technologies in a more operational manner to automate the routes’ construction especially during the fire season. We used combined geoinformation technology (developed previously) and satellite product, namely vegetation map from Moderate Resolution Imaging Spectroradiometer (MODIS) to estimate how accessible any forest area is when moving by public roads and forest glades from a fire station as a starting point. These stations are the main centers to fight the forest fires within the territory of ground protection zones in Russia and we have considered them as the logistic centers to manage the forest resources also. Transport model was created in two variants: no-barriers and barriers-based (forestries). By using these two models we have shown two different scenarios of action. The key area was Novosibirsk Region located in the Siberian Federal District, Russia. We have created a series of maps to show the transport accessibility of forest areas from the fire stations. Estimation of “located” pixels or forest areas accessible from the fire stations for the key area is about 66% - 83%;the most accessible forest type is mixed forests. The number of inaccessible pixels has been increased by more than two times in barriers scenario. Technology can be used for different thematic data sour

关键词： Ground Accessibility GIS Barriers Forest Resources Forestry Fire Station MODIS

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气体动力学方程系统的数值方法

气体动力学方程系统的数值方法

作者： Bushuev konstantin 华东师范大学

学位级别：硕士

在现代科学和技术的许多领域中,许多问题涉及气体动力学方程组。气体动力学方程组的强烈的非线性使得数值方法成为求解方程组最有效和最通用的方法之一。本文将给出在拉格朗日坐标下对于一维气体动力学方程组系统的一类数值解法,同...

在现代科学和技术的许多领域中,许多问题涉及气体动力学方程组。气体动力学方程组的强烈的非线性使得数值方法成为求解方程组最有效和最通用的方法之一。本文将给出在拉格朗日坐标下对于一维气体动力学方程组系统的一类数值解法,同时给出几个数值算例。对气体动力学方程组的相关科学论文数量与日俱增,这个现象说明人们对于相关的科学计算领域的兴趣越来越浓厚。气体动力学方程组的数值解法目前仍是一个热门的数学研究分支。一维气体动力学方程的数值解的发展得益于文献[1],[2],[3],[4],[5]和[17],完整的概述也可以在[10]找到。一些气体动力学方程可以考虑拉格朗日方法（如爆炸的问题、气流的问题等）,所以许多的论文致力于构建拉格朗日变量的数值解法（[9],[16]）。对于一维问题,通常不只是考虑拉格朗日变量方法,也有使用拉格朗日质量坐标法（[17]）。然而拉格朗日质量坐标法对于高维问题只能用于圆柱或球对称的情况。许多有限差分方案的另一个缺点：算法仅适用于解是光滑的情况;在解不光滑处,采用的算法必须有所改变。这些问题的精确计算中,一个关键的问题是如何保证气体动力学方程组近似解在不连续处的实际逼近精度。克服困难的方法之一是在气体不连续的位置采用显格式（[4],[7]）。然而,虽然这种方法提供了必要的精度,但实现太过于复杂,特别是在多维的情况下,实际应用很难找到所有的不连续性（[1]）。另一种方法是使用同种的差分格式（[3],[14]）,其允许算法单独进行光滑解和间断解的计算。一个最基本的原则是由A. Tikhonov和A. A. Samarskiy提出的守恒型差分格式。[18]指出,在计算中,这一原则的违反可能会导致误差,这种误差即使网格细化也不会消失的。因此,目前只讨论守恒型的差分格式。然而,同种（尽管是守恒的）差分格式经常处理以下情况：控制方程的直接近似导致间断点附近的强烈振荡（s[17]）。一种常用的消除这个缺陷的方法是引入所谓的人工粘性的项（[15]）,即在带黏性和其它系数随网格细化而趋于零的耗散过程的近似解的差分方程中引入附加项。这种方法已经在用拉格朗日变量解决气体动力学问题中广泛应用（[8]）,因为拉格朗日坐标的广泛使用实际上在显式格式中分配了接触不连续性,只保留了如冲击波的不连续性,这有利于人工粘性系数的正确选择。在欧拉和欧拉-拉格朗日变量中,最重要的参数是耗散传播接触边界。因此,由于算法格式的高要求性和现有的算法的不足,对于气体动力学方程组会出现新的差分格式。本文所提出的算法在解的光滑区域具有二阶逼近精度,并同时具有单调性。有限差分格式建立在积分插值法上,所以差分格式自然满足原问题的守恒定律。算法在不做修改的情况下可以建立不同的解。它同样可推广用于n维的情况,并进一步得到拉格朗日变量和欧拉变量的解。

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A Novel Method of Fruit Raw Material Reprocessing

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Engineering（科研） 2010年第12期2卷 962-968页

作者： Alexander A. Emelyanov konstantin A. Emelyanov 不详

We introduced a method of deep resources-economy reprocessing of fruit raw material. Based on the raw material fractionation at decreased temperatures the method results in the production of bioactive food stuffs, which are dry juice and refuse and natural water. The method includes the production of directly extracted juice and pulp refuse, juice evaporation in vacuum with the production of concentrate and natural water, and air drying the concentrate and the refuse. The method is realized for garden strawberry and cucurbit pulp. The mass concentration of solid in the fractions of cucurbit pulp is defined and the specific weight of the fractions are defined. It is shown that the solid of the cucurbit pulp is uniformly allocated between the fractions and amounts 34% for the dry juice, 31% for the dry refuse, and 35% for the natural water. Food and biological values of the cucurbit pulp fractions are determined. It is determined that the cucurbit includes silicium, nickel, and chromium. Silicium is contained only in dry fractions;nickel is present everywhere;chromium is discovered only in the natural water. Food and biological values of the cucurbit pulp are defined and their allocation between the fractions is determined. Separate components concentrations of the solid considerably differ between the fractions. Thus, two thirds of pulp protein is concentrated in the dry juice and a third is concentrated in the refuse. The natural water contains up to 90% of fat and sugar, from a half to two thirds of B-group vitamins, and the bulk of the mineral substances (K, Na, Ca, Mg, S, Co, Cu, Ni, Cr, and Zn), which concentration composes from 73% for potassium up to 100% for chromium.

关键词： Fruit Raw Material Vacuum Evaporation Air Drying Bioactive Fractions Dry Juice Dry Pulp Refuse Nature Fruit Water