Work Analysis of Maritime Passenger Terminals for Particular Region Based on Circos Plot

In terms of a systematic approach, till now it was not possible to investigate separately sea passenger terminals and the operation of ferry or cruise lines. So it is necessary to investigate their mutual influence, analyze the intensities, take into account the influence of the external environment and solve forecasting problems. This circumstance justifies the need to use new tools and models that allow analyzing the macro-level, consisting of all the ports in the region and the available ferry lines. For solving short-term forecasting problems, the class of polynomial problems has recommended itself well. But, when taking into account the mutual influence of the terminals and ferry lines on each other, the task becomes much more complicated. The discrete nature of the initial data, schedules of ship calls which need to be combined into a single array of data, comes to the fore in the study of processes. The process of functioning of an individual terminal with varying degrees of accuracy can be represented as a sequence of several typical design modes, each of which corresponds to a change in a certain set of characteristics and number of ship calls. But when solving problems at the macro-level, the article proposes to use optimization based on the circos plot. The construction of this type of diagram is associated with the fulfillment of certain boundary conditions, which makes it possible to define the boundaries of the region, to study and to form the completeness of the initial data. The object of the study is the interconnection of selected marine passenger terminals and the existing ferry lines. Based on the initial data, transformations were carried out and a circular (circos) plot of relations was constructed. Such diagram takes into account the analysis of the mutual influence of the terminals of one region. The obtained results make it possible to improve the quality of decision making, since a representation of the macro-level planning system of the «marine passenger terminals - ferry lines» is formed within the framework of the selected marine region

Research and Analysis Container Shipping Line on the Basis of Simulation

Container transport is the main and leading form of transportation in shipping. Selection of the route for each voyage is determined by the nature of the traffic and operating conditions of the fleet. The best way to avoid any inconvenience when solving the predictive task of the liner ships is to use simulation taking into account both deterministic and stochastic processes arising from the operation of liner ships. The article describes a simulation model of a sea container line, for example, the company Fesco, working on a regular container line in St. Petersburg (Russia), using mathematical model and proposed model “follow the leader” to describe the movement of ships. The main task in the simulation is to achieve an optimal balance between ship traffic and the decision on group forecast issues with the composition of the ships on the line

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

Contact potential that recognizes the correct folding of globular proteins

We have devised a continuous function of interresidue contacts in globular proteins such that the X-ray crystal structure has a lower function value than that of thousands of protein-like alternative conformations. Although we fit the adjustable parameters of the potential using only 10,000 alternative structures for a selected training set of 37 proteins, a grand total of 530,000 constraints was satisfied, derived from 73 proteins and their numerous alternative conformations. In every case where the native conformation is adequately globular and compact, according to objective criteria we have developed, the potential function always favors the native over all alternatives by a substantial margin. This is true even for an additional three proteins never used in any way in the fitting procedure. Conformations differing only slightly from the native, such as those coming from crystal structures of the same protein complexed with different ligands or from crystal structures of point mutants, have function values very similar to the native's and always less than those of alternatives derived from substantially different crystal structures. This holds for all 95 structures that are homologous to one or another of various proteins we used. Realizing that this potential should be useful for modeling the conformation of new protein sequences from the body of protein crystal structures, we suggest a test for deciding whether a nearly correct approximation to the native conformation has been found.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/29791/1/0000133.pd

Size-independent comparison of protein three-dimensional structures

Protein structures are routinely compared by their root-mean-square deviation (RMSD) in atomic coordinates after optimal rigid body superposition. What is not so clear is the significance of different RMSD values, particularly above the customary arbitrary cutoff for obvious similarity of 2–3 Å. Our earlier work argued for an intrinsic cutoff for protein similarity that varied with the number of residues in the polypeptide chains being compared. Here we introduce a new measure, Ρ, of structural similarity based on RMSD that is independent of the sizes of the molecules involved, or of any other special properties of molecules. When Ρ is less than 0.4–0.5, protein structures are visually recognized to be obviously similar, but the mathematically pleasing intrinsic cutoff of Ρ>1.0 corresponds to overall similarity in folding motif at a level not usually recognized until smoothing of the polypeptide chain path makes it striking. When the structures are scaled to unit radius of gyration and equal principle moments of inertia, the comparisons are even more universal, since they are no longer obscured by differences in overall size and ellipticity. With increasing chain length, the distribution of Ρ for pairs of random structures is skewed to higher values, but the value for the best 1% of the comparisons rises only slowly with the number of residues. This level is close to an intrinsic cutoff between similar and dissimilar comparisons, namely the maximal scaled Ρ possible for the two structures to be more similar to each other than one is to the other's mirror image. The intrinsic cutoff is independent of the number of residues or points being compared. For proteins having fewer than 100 residues, the 1% Ρ falls below the intrinsic cutoff, so that for very small proteins, geometrically significant similarity can often occur by chance. We believe these ideas will be helpful in judging success in NMR structure determination and protein folding modeling. © 1995 Wiley-Liss, Inc.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/38521/1/340220308_ftp.pd

Some Experiences of Specialists in Maritime Transport Education at SUAI (Russia) and the University of Dubrovnik (Croatia)

Transport sector is traditionally globally oriented, so education is necessarily connected with standardization. The importance of experience exchange between education centers and schools is obvious. More and more skills that are necessary for specialist in transport sector are connected with logistics and ICT. The most effective approach is that one in which the education is governed by simulators and especially educated instructors with great experience from real sector. In this paper, we have presented some experiences from Saint-Petersburg State University of Aerospace Instrumentation (SUAI) in Russia and Maritime Department from The University of Dubrovnik in Croatia