Key Factors of Logistic Capacity of a Mining Enterprise, Management of Processes and Their Assessment Mini Review

The problem of assessment of logistic providing of the mining industry and production management with maximum efficiency is considered. The technique of integrated assessment of logistic capacity of the enterprise in the form of the sum of all product weight coefficient and ball values of components of system. It is proposed to be achieved through contour-integrated control of the logistical processes of the mining enterprise. The production logistics tasks included in the integrated system are formulated. A methodology for the operational management of the loading and transport complex has been developed. The local contour of capacity is proposed to evaluate the ratings of participants included in the matrix structure. The possibilities of the contour-integrated control of management with calculation of rating estimates of participants of organizational and logistic subsystems allow increasing reliability of material support due to streamlining of material, information and financial flows, system control of conducting organizational and logistic works at the enterprise. Use of the recommended technique allows estimating the conditions of logistic providing mining enterprise, to compare him with the existing standards.


Introduction
An analysis of the performance of large-scale industrial enterprises shows significant losses in production efficiency associated with the non-integrated management of the current and operational levels of administration, the lack of their typing, the weak information and adoption of logistics management decisions.
The efficient management of modern production requires new approaches to logistics management in industrial enterprises. There is a complex task of management of streams of deliveries of material, information and financial resources in time taking into account the performed works on objects of the enterprise for the purpose of optimization of operational expenses and increase in reliability of performance of the planned works [1][2][3]. The applied approaches have to exclude emergence of such production situations on industrial facilities which can lead to production failures, to the interruption of synchronization of the providing processes that as a result would lower production efficiency in general and has had a negative impact on its techno-economic indicators [4].
For example, the technological subsystem of working off of the mineral deposit should be supplemented with a set of components of the material, organizational, informational and financial providing entering the logistic capacity of the mountain enterprise. The weakened logistic providing constrains technological capabilities of mining for 25-30%.

Assessment of the logistics capacity of a mining enterprise
In a general sense it is accepted to understand as the capacity of the enterprise the volume and quality of the resources which are available for him, abilities of employees, financial opportunities, ability to receive and to effectively use necessary information in the activity. There are different interpretations of a concept of logistic capacity of the industrial enterprises, and there is no uniform understanding at authors about a possibility of his use in practice. The following definition is known:"Logistic potentialset of the resources providing ability of the enterprise to effective implementation of logistic operations, and an opportunity for achievement of goals with optimum expenses".
The analysis of interpretations of a concept of logistic potential of the industrial enterprise, it is possible to establish that there are no recommendations about calculation of the generalized indicator of level of logistic capacity of the enterprise (LLPE) which should be calculated for the concrete enterprise.
Before it is proposed to consider the logistics Capacity (LP) as a combination of a finite set of components, the list of which is established by expert way, and, as the knowledge accumulates, its set and extent of variation may change: where -is the j-th of the LP component, j=1 … n; min j k ( max j k )the minimum (maximum) value j-th components in points. And we believe that, 10 max j k a = points (on ten to a mark scale).
Minimum number of components sufficient for effective management of an enterprise must be at least 7 and not more than 13. The integral value of the enterprise's logistic potential (LLPE) is determined by the sum of all the weights j β and points j β (by analogy with the known works): For an example we will consider LP of the mining enterprise consisting of twelve components (n=12 in expressions (2) and (3)), necessary data for calculation of LLPE are consolidated in Table 1. It is known that conducting mining operations has a number of features, for example, on the second a component see Table 1 the mountain enterprises are removed from the main routes and highways should be given to a horizontal equivalent [5] (not only internal, but also external roads) as the car route in a quarry consists of parcels with different roadway quality and different various biases.
For simpler and effective management of a loading and transport complex of the mining enterprise it is necessary to express a set of major factors through an integrated indicator. Such indicator is the distance of transportation of mountain mass provided to a horizontal equivalent which is defined proceeding from a condition of equality of the energy necessary for movement for the movement on inclined and horizontal parcels. Automobile route [5] it is offered to estimate by formula i. at The reduced distance ( br L ) should be defined on the basis of a formula (10), proceeding from the known parameters where , , is, respectively, the length, incline and factor of routs (j = 1 ...n).
As there are a requirement to compare a line with various road cover the g problem are decide by determination of the weightedmean value of the main resistivity to motion ( ) Value of base basic specific resistance to movement should be within actual indicators of quality of roads. We recommending b b ω =30 N/kN that corresponded to the road with a covered with crushed stone coating. Though it had no basic value as it are easy to make recalculation on the formula (10) result distances at transition from one base to another. b a ω -average specific basic resistance to movement.
After an eighth component it are important to develop environmental economics management of mountain production, after a tenth component, remoteness of suppliers are characteristic.
We will note also that j k -of j component of LP in expression (1)   Sets of kits a component j k and a subcomponent j i k , constitut LP was define concretely and regulate within the limits of the konturno-integrat management of logistic processes of industrial organization.

Bases of the contour-integrated process management of logistic system of the enterprise
In the course of formation of logistic capacity of the enterprise solutions of logistic tasks collect, and an assessment of a condition of production of the enterprise and its subsystems is given, comparisons with the chosen restrictions and criteria of efficiency of a contour of management of production economic activity are carried out, deviations from reference requirements of functioning of a production system are established. If the control condition contradicted results of comparisons, then define the suitable operating logistic impact on the hierarchical system of the enterprise which will allow transferring it to the new mode of functioning with the best social and economic and ecological characteristics [4].
Under the management contour, you should understand the object that is generated by the interrelated components as necessary and sufficient to make management decisions.
The components of the contour are represented not only by qualified personnel, but also by an integrated logistics task system, office automation equipment, communication channels, and information technology and logistics infrastructure. Application of system approach in the management of logistics of the enterprise is caused by need of elimination of the losses resulting from the loss of profits. The need to address the losses resulting from the loss of profits, complexity of solvable logistic tasks and the need to integrate local contours into a coherent production system. Logistic activity of specialists of the enterprises should be considered taking into account integration of interrelations of forms of activity in the course of the decision of logistic tasks Figure  2. The main tasks, for example, the production logistics included in the integrated logistics task system, are: i.
Forming of the logistic structure of manufacturing facility and production process; ii.
The control of norm for consumption of material resources (MR) on working processes and operations of production; iii. Optimizing the pace of production, all MR reserves, unfinished production (up), volumes of finished products (FM) within the production-technology cycle and the warehousing system of the industrial enterprise; iv. Improvement of technical and economic indicators (TEF) of work of an intra-industrial transport complex; v.
Rationing of time of a production cycle; vi. Accounting, analysis of operational logistic expenses; vii. Choice of intra production management information production system of optimization of material resources; viii. Imitating modeling of an expense of material resources (MR); ix. Accounting of production wastes and assessment of effective use of secondary MR (elimination of losses from marriage); x. Formation of the synchronized and integrated material, information and financial flows in production systems; xi. Calculation of parameters of the schedule of delivery of MR on production objects of the enterprise; xiv. Justification of management methods logistic risks of the enterprise [4] (Figure 2).
The logistics system (LS) has to include: interaction of specialists of the enterprises; statement and classification of logistic tasks; packets of machine program for the solution of tasks; the integrated information database (BD), schemes of information and financial flows; computer aids and logistic infrastructure. The offer system are built on the basis of a konturno-integrated approach, by a hierarchical principle with forming of through information technology of an estimation of a condition of results of work of the enterprise, allocation of straight lines and feedback of form subsystems [6][7][8]. For example, the contour of management of transport and warehouse logistics [8,9] considering inter-functional communications is presented in the Figure 3. On Figure 3 Symbols accepted: PM -preventative maintenance; MR-material resources; TEF-technical and economic features; TWP-Transport and warehousing processes; bilateral shooters have displayed organizational and information communications. The configuration of this local contour see Figure 3 considers interaction of personnel of different divisions of the enterprise in management processes, planning, economy, logistics, the organization and technology in temporary matrix structure. Need of participation, for example, employees of dispatching service is caused by requirement of redistribution of motor transport in process of his release in internal transportations of material resources according to applications of producing departments of the enterprise as separate cars can be used not for total operational time of change and, therefore, it is required to establish them the new place of work to exclude outages of technology (Figure 3).

Creation of local contours of management of the industrial enterprise
In Figure 3 the designations PM-scheduled preventive maintenance d; MR -material resources; TEF-technical and economic indicators; TWP-transport and warehouse processes; bilateral shooters have displayed organizational and information communications. The configuration of this local contour see ii.
Calculates the planned of a shift truck (  iii. The maximum permissible number max i j n of i-th type dump trucks for each excavator is determined as: where: i λ -the planned share of i-th type dump trucks from the total number of dump trucks in the excavator-car complex.
iv. The shift manager or the mine dispatcher distributes the incoming dump trucks between excavators. When dump trucks are distributed, what is being ensured first, is the implementation of the shift's plan on ore extraction.
If the estimated work shift volume for the overburden exceeds the planned volume, and the number of unloading points exceeds the number of loading points, it is advisable to regulate the productivity of dump trucks by the distance of transportation, thereby controlling the amount of work for overburden removal. When the situation is changed depending on the number of working excavators or dump trucks, corrective calculations are performed.
The above-mentioned method may be interconnected with GPS and GLONASS systems, through this, additionally improve the management reliability and efficiency of the loading-transport process. The proposed method of transport-warehouse system allows planning the rotation of different types of vehicles, both on normative and actual databases. Accumulated statistics of the contour work is easily used in simulation modeling of the integrated transport and storage process. For the conditions of a machine-building enterprise, the solution of a similar problem was considered in [7].
The cargo transportation process under our research is supported by the work of a number of services and divisions of the enterprise: planning department, transportation department, main and auxiliary divisions, warehousing, dispatching service, information and analytical center. The need for formation of a local control contour see Figure 3 is explained by the multistage solution of the problem of distribution of vehicles and the obligatory teamwork of all specialists of the enterprise. Each division (department) solves certain particular problems (examples are shown in Figure 2), which eventually become integrated and contribute to the emergence of sudden consequences of such an association, and also improve the quality of management decisions regarding the transport and warehouse logistics of an industrial enterprise [7,8].
Monthly performance of the local control contour (see Figure  2) is recommended to evaluate via the rating system indicators ((25) ... (27)), allowing to take into account the contribution of each unit and its staff into the effectiveness of suggested activities of transport and warehouse logistics.
It is known that the creation of a reliable management team appears to be the one of the primary tasks of production management, including issues of logistics management. Such an assertion belongs to the one of specialists in the field of management Lee Jacocca [10]: "... In the end, all business operations can be reduced to three words: people, product, and profits. In the first place are people." To motivate the participants of the logistics system, we propose computing individual ratings ( ) by expression (25):   (24)) being ordered into a row (30): The value of Ri may be calculated for any employee dynamically for monthly periods or for a certain period of time as a weighted average. The need for calculation Ri arises due to preparation of objective information for each participant (employee) and serves as an integrated indicator for the formation of a "social and industrial hierarchy" in the enterprise [7,8,11].
The values of the ordered row (30) may be multiplied by a factor (10 or 100 to form the integer parts of each Ri, while maintaining the regularity of this row), and may be used as one of the main indicators of the participant's (employee's) value, also to serve as an objective criterion for encouraging and selecting candidates for promotion at work. The value of Ri may be used to distribute bonuses (formed from the sums of savings for the implemented logistics activities) between the participants of the logistics system.

Conclusion
The proposed methodology allows us to specific ate the influence of key factors on the production system of the mining enterprise and to assess the state of logistic support of the object under study, compare it with existing standards and increase the accuracy of estimates of the logistical potential. Issues of the condition and strengthening of logistical support of the mining enterprise usually included in the top-priority list of tactical and strategic tasks of logistics management.
We have developed a method of contour-integrated management with the calculation of rating scores of participants of the production system, what allows increasing the reliability of logistics streamlining of material, information and financial flows, as well as the system of control and regulation management of organizational and logistical work in an industrial plant. As a whole, this improves the quality and efficiency with regard to administrative decisions in the management of mining industry.