System Approach to the Simulation of Transport Infrastructure of Container Terminals

This article describes a systematic approach to the simulation and provides practical application of the seaport infrastructure analysis

IMPROVEMENT OF THE QUALITY OF THE SEA PASSENGER TERMINAL BASED ON METHODS OF FORECASTING

Modern processes in the world economy directly affect the development and changes in sea passenger ports and their infrastructure. The principles of organization of the “city - sea passenger port” system are changing and becoming more complex. Recently there has been a significant increase in passenger traffic and cruise ship and ferry traffic in Baltic Sea. Since these objects are complex technical systems consisting of many elements, in their study it is necessary to use the system approach, to solve the problem of structure synthesis and the determination of objective functions. The objective of this publication was to study how the forecast for the development of demand for sea passenger ports (number cruise ships and passengers flow for next year) could be done by combining simulation and forecast functions. These tasks depend on the qualitative construction of specialized information simulation models. Such subsystems should be used by passenger port management for both operational everyday tasks and strategic tasks. One of the main goals of the forecast is the qualitative construction of an analytical function work of the terminal that determines the passenger flow based on real data. The article considers the solution of this problem by using the method of average growth rate and polynomial extrapolation. In the article, the characteristics and infrastructural features of the passenger ports of St. Petersburg are given, and the main directions of development based on the results of simulation are considered. The paper discusses advantages of using such forecast and their introduction in the early stages of operation of the terminal. The study represents an example of analytical information used for the forecast of the terminal load, the analysis of the workload and efficiency of the organization of the marine terminal in operational tasks using analytical function based on real data

Legal Basis of the Police’s Activity to Ensure the Safety of Road Participants in the Chinese People’s Republic

The article provides a general description of the organizational and legal model of the functioning of the police of the People’s Republic of China to ensure the safety of road users. The purpose and structuralfunctional interrelation of a number of state bodies included in the road safety system are considered: the Department of State Security at the State Council of the People’s Republic of China, the Ministry of Public Security (MOB), the transport departments of the MOB and the Traffic Police. The analysis of the laws of the People’s Republic of China “On the People’s Police” and “On measures of road safety”. Attention is focused on the high level of training requirements for the People’s Police of China. Administrative and legal sanctions for violations of road safety rules in the PRC are investigated

Design of Force Fields from Data at Finite Temperature

We investigate the problem of how to obtain the force field between atoms of an experimentally determined structure. We show how this problem can be efficiently solved, even at finite temperature, where the position of the atoms differs substantially from the ground state. We apply our method to systems modeling proteins and demonstrate that the correct potentials can be recovered even in the presence of thermal noise.Comment: 10 pages, 1 postcript figure, Late

Observation of narrow baryon resonance decaying into pKs0pK^0_s in pA-interactions at 70GeV/c70 GeV/c with SVD-2 setup

SVD-2 experiment data have been analyzed to search for an exotic baryon state, the $\Theta^+$-baryon, in a $pK^0_s$ decay mode at $70 GeV/c$ on IHEP accelerator. The reaction $pA \to pK^0_s+X$ with a limited multiplicity was used in the analysis. The $pK^0_s$ invariant mass spectrum shows a resonant structure with $M=1526\pm3(stat.)\pm 3(syst.) MeV/c^2$ and $\Gamma < 24 MeV/c^2$. The statistical significance of this peak was estimated to be of $5.6 \sigma$. The mass and width of the resonance is compatible with the recently reported $\Theta^+$- baryon with positive strangeness which was predicted as an exotic pentaquark ($uudd\bar{s}$) baryon state. The total cross section for $\Theta^+$ production in pN-interactions for $X_F\ge 0$ was estimated to be $(30\div120) \mu b$ and no essential deviation from A-dependence for inelastic events $(\sim A^{0.7})$ was found.Comment: 8 pages, 7 figures, To be submitted to Yadernaya Fizika. v3-v5 - Some references added, minor typos correcte

Dynamics and Radiation of Young Type-Ia Supernova Remnants: Important Physical Processes

We examine and analyze the physical processes that should be taken into account when modeling young type-Ia SNRs, with ages of several hundred years. It is shown, that energy losses in the metal-rich ejecta can be essential for remnants already at this stage of evolution. The influence of electron thermal conduction and the rate of the energy exchange between electrons and ions on the temperature distribution and the X-radiation from such remnants is studied. The data for Tycho SNR from the XMM-Newton X-ray telescope have been employed for the comparison of calculations with observations.Comment: 19 pages, 8 figure

Прогностическая ценность шкалы оценки трудной интубации в бариатрической хирургии

   The objective was to assess the predictive value of the risk scale for difficult intubation in obese patients.   Materials and methods. The object of the study was 110 patients (90 women and 20 men) operated on as planned in 2022. The mean age of the patients was 42 ± 11 years. The median body mass index (BMI) was 43.7 kg/m 2 (Q1–Q3: 37.9–49.1). All patients underwent a standard preoperative examination with the identification of the risk of difficult airways according to the intubation difficulty scale (IDS): mouth opening, neck mobility, mandibular protrusion, Mallampati class, sternomental and thyromental distances, and history of previous intubations were assessed.   Results. Difficult intubation (3–4 degrees according to Cormack–Lehane) were detected in 19 patients (17.3 %). ROC-analysis revealed the dependence of the probability of difficult intubation on the total points on the intubation difficulty scale. The area under the ROC curve was 0.809 ± 0.063 with 95 % CI: 0.685 – 0.932. The model was statistically significant (p &lt; 0.001). The cut-off point value for the total points on the intubation difficulty scale, which corresponded to the highest value of the Youden index, was 4. The sensitivity and specificity of the model were 100.0 % and 47.3 %, respectively. Significant differences (p &lt; 0.001) were found in the analysis of the risk of difficult intubation depending on the total points on the intubation difficulty scale. The most significant differences (p &lt; 0.001) were demonstrated by the mouth opening width and neck mobility. There were no differences (p = 0.547) when analyzing the history of difficult airways and nighttime snoring.   Conclusion. Overall, the intubation difficulty scale showed predictive value in terms of assessing the risk of difficult airways (p = 0.002, χ2 = 13.230). The most reliable indicators for predicting the risks of difficult intubation were mouth opening less than 4 cm (p &lt; 0.001, χ2 = 11.185) and head and neck flexion in the atlanto-occipital joint less than 90о (p &lt; 0.001, χ2 = 10.858). Assessment of thyromental and sternomental distances, mandibular protrusion ability, and Mallampati class also showed statistical significance. Prior history of difficult intubation and nighttime snoring showed no statistically significant risk in predicting difficult airways (p = 0.547, χ2 = 0.363).   Цель – оценить прогностическую ценность шкалы риска трудной интубации у больных ожирением.   Материалы и методы. Объектом исследования послужили 110 пациентов (90 женщин и 20 мужчин), оперированных в плановом порядке в 2022 г. Возраст пациентов – 42 ± 11 лет. Медиана индекса массы тела (ИМТ) составила 43,7 кг/м2 (Q1–Q3 : 37,9–49,1). Всем пациентам проводили стандартный предоперационный осмотр с выявлением риска трудных дыхательных путей по шкале оценки трудной интубации (ШОТИ): оценены открывание рта, подвижность шеи, способность к выдвижению нижней челюсти, класс по Маллампати, стерноментальная и тироментальная дистанции, а также анамнез предшествующих интубаций.   Результаты. Трудная интубация (3–4 степени по Cormack–Lehane) выявлена у 19 пациентов (17,3 %). ROC-анализ выявил зависимость вероятности трудной интубации от суммы баллов по шкале оценки трудной интубации (площадь под ROC-кривой 0,809 ± 0,063 с 95 % ДИ: 0,685–0,9320, p &lt; 0,001). Пороговое значение суммы баллов по ШОТИ в точке cut-off, которому соответствовало наивысшее значение индекса Юдена, составило 4. Чувствительность и специфичность модели составили 100,0 % и 47,3 %, соответственно. Установлены значимые различия (p &lt; 0,001) при анализе риска трудной интубации в зависимости от суммы баллов по ШОТИ. Наиболее достоверные различия (p &lt; 0,001) продемонстрировали показатели ширины открывания рта и подвижности шеи. Не выявлено различий (p = 0,547) при анализе анамнеза трудных дыхательных путей и ночного храпа.   Заключение. Шкала оценки трудной интубации продемонстрировала прогностическую ценность в отношении оценки рисков трудных дыхательных путей (р = 0,002, χ2 = 13,230). Наиболее достоверными показателями в отношении прогнозирования рисков трудной интубации оказались открывание рта менее 4 см (р &lt; 0,001, χ2 = 11,185) и сгибание головы и шеи в атланто-окципитальном сочленении менее 90о (р &lt; 0,001, χ2 = 10,858). Оценка тироментальной и стерноментальной дистанций, способности к выдвижению нижней челюсти и классу по Маллампати также показали статистическую значимость. Предшествующий анамнез трудной интубации и ночной храп не выявили статистически значимого риска в отношении прогнозирования трудных дыхательных путей (р = 0,547, χ2 = 0,363)

Learning about protein folding via potential functions

Over the last few years we have developed an empirical potential function that solves the protein structure recognition problem : given the sequence for an n -residue globular protein and a collection of plausible protein conformations, including the native conformation for that sequence, identify the correct, native conformation. Having determined this potential on the basis of only some 6500 native/nonnative pairs of structures for 58 proteins, we find it recognizes the native conformation for essentially all compact, soluble, globular proteins having known native conformations in comparisons with 10 4 to 10 6 reasonable alternative conformations apiece. In this sense, the potential encodes nearly all the essential features of globular protein conformational preference. In addition it “knows” about many additional factors in protein folding, such as the stabilization of multimeric proteins, quaternary structure, the role of disulfide bridges and ligands, pro proteins vs. processed proteins, and minimal strand lengths in globular proteins. Comparisons are made with other sorts of protein folding problems, and applications in protein conformational determination and prediction are discussed. © 1994 Wiley-Liss, Inc.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/38520/1/340200206_ftp.pd