Совершенствование системы подбора и отбора персонала предприятия

Объектом исследования является действующая система подбора и отбора персонала на предприятии АО "НПЦ "Полюс". Предметом исследования является совершенствование действующей системы подбора и отбора персонала на предприятии АО "НПЦ "Полюс". Цель работы – разработка рекомендаций по совершенствованию системы подбора и отбора персонала на предприятии АО "НПЦ "Полюс". Задачи: 1)рассмотреть понятие подбора и отбора персонала на предприятии; 2)дать краткую характеристику деятельности предприятия; 3)дать характеристику персоналу предприятия; 4)проанализировать действующую систему подбора и отбор персонала на предприятии; 5)выявить проблемы системы подбора и отбора персонала; 6)разработать рекомендации по совершенствованию подбора и отбора; 7)оценить эффективность от применения мероприятий.The object of research is the current system of selection and selection of personnel at the enterprise of JSC "Scientific and Production Center" Polyus ". The subject of the study is the improvement of the existing personnel selection and selection system at the enterprise of Polyus Scientific and Production Center JSC. The purpose of the work is to develop recommendations for improving the personnel selection and selection system at the enterprise of Polyus Scientific and Production Center JSC. Tasks: 1) to consider the concept of selection and selection of personnel in the enterprise; 2) to analyze the dynamics of the number, structure and movement of personnel; 3) to develop recommendations for improving the system of selection and selection of personnel in the enterprise

Experimental investigation of the thermosiphonic phenomenon in domestic solar water heaters

The deeper understanding of the ‘thermosiphonic phenomenon’ and the identification of the key parameters affecting it, is the main aim of a research project currently in process in Cyprus. In this work a review of the existing standards and scientific knowledge concerning domestic solar water heaters is presented. The first preliminary results of the experimental investigation of the ‘thermosiphonic phenomenon’ in domestic solar water heaters are also presented. For this purpose a special test rig was set up and equipped with all sensors necessary to measure all parameters that are most likely to affect the ‘thermosiphonic phenomenon’. All tests were conducted according to ISO 9459- 2:1995(E). At first, the solar collector was tested according to EN12975-2:2006 in order to determine the thermal performance characteristics at a flow and operation conditions specified by the standard. Consequently, the efficiency of the collector operating thermosiphonically was calculated based on quasi-dynamic approach. Finally, a series of correlations were attempted using the data acquired when the collector is operating themosiphonically which are the following: (i) the temperature difference of the water at the outlet and the inlet of the collector (ΔΤ) with the solar global radiation, (ii) the water mass flow with the solar global radiation, (iii) the water mass flow with the temperature difference of the water at the outlet and the inlet of the collector (ΔΤ). The results of the data analysis showed that these parameters are very well correlated between them since the coefficient of determination (R2) is over 0.91 in all cases

Aortic Root Motion Correction in C-Arm Flat-Detector CT

Abstract—Treatment of cardiac diseases via minimally invasive procedures is of major interest in the clinics. An angiographic C-arm CT system is state-of-the-art in an interventional cardiac laboratory. It opens up the possibility of 3D reconstruction during the procedure. Due to the long acquisition time of several seconds of the C-arm, imaging of dynamic structures is a challenging problem. Therefore, motion correction for cardiac applications is an issue for this imaging device. New minimally invasive procedures like the recently introduced TAVI (transcatheter aortic valve implantation) suffer from cardiac motion. The 3D image of the aorta is acquired during rapid pacing of the patient to minimize the cardiac motion and to reduce the blood flow. We present a new algorithmic approach for motion compensation of the aortic root for TAVI procedures under sinus rythm to make rapid pacing unnecessary. Our optimization routine was tested on three clinical datasets of the aortic root, wherein all three show promising results. Index Terms—Flat-Detector CT, Cardiac imaging, Aortic root, Motion correction. placed in one of the cusps (typically the non-coronary cusp). Thus, only the aortic root is contrasted. Unfortunately we do not see the aortic outflow tract since this object is beyond the aortic valves. In order to minimize artifacts caused by cardiac motion, rapid ventricular pacing is applied of 180-220 bpm and patient breathing is supended. Figure 1 shows an aortic root segmentation illustrating the basic anatomy of a normal aortic valve with three cusps and the ostium of the two coronary arteries. I

Structure–Function Analysis of the Two-Peptide Bacteriocin Plantaricin EF

Plantaricin EF is a two-peptide bacteriocin that depends on the complementary action of two different peptides (PlnE and PlnF) to function. The structures of the individual peptides have previously been analyzed by nuclear magnetic resonance spectroscopy (Fimland, N. et al. (2008), Biochim. Biophys. Acta 1784, 1711−1719), but the bacteriocin structure and how the two peptides interact have not been determined. All two-peptide bacteriocins identified so far contain GxxxG motifs. These motifs, together with GxxxG-like motifs, are known to mediate helix–helix interactions in membrane proteins. We have mutated all GxxxG and GxxxG-like motifs in PlnE and PlnF in order to determine if any of these motifs are important for antimicrobial activity and thus possibly for interactions between PlnE and PlnF. Moreover, the aromatic amino acids Tyr and Trp in PlnE and PlnF were substituted, and four fusion polypeptides were constructed in order to investigate the relative orientation of PlnE and PlnF in target cell membranes. The results obtained with the fusion polypeptides indicate that PlnE and PlnF interact in an antiparallel manner and that the C-terminus of PlnE and N-terminus of PlnF are on the outer part of target cell membranes and the N-terminus of PlnE and C-terminus of PlnF are on the inner part. The preference for an aromatic residue at position 6 in PlnE suggests a positioning of this residue in or near the membrane interface on the cells inside. Mutations in the GxxxG motifs indicate that the G₅xxxG₉ motif in PlnE and the S₂₆xxxG₃₀ motif in PlnF are involved in helix–helix interactions. Atomistic molecular dynamics simulation of a structural model consistent with the results confirmed the stability of the structure and its orientation in membranes. The simulation approved the anticipated interactions and revealed additional interactions that further increase the stability of the proposed structure

Experimental Investigation of the Effect of Solar Collector’s Inclination Angle on the Generation of Thermosiphonic Flow

Cyprus is currently the leading country in the world with respect to the application of solar water heaters for domestic applications, with more than 93 % of the houses equipped with such a system. The great majority of these solar water heaters are of the thermosiphonic type. Currently, the knowledge about the parameters affecting the ‘thermosiphonic phenomenon’ is rather poor while on an international level (International Organization for Standardization, ISO, and Comité Européen de Normalisation CEN committees) there is no standard available to test thermosiphon solar collectors. The deeper understanding of the ‘thermosiphonic phenomenon’ and the identification of the key parameters affecting it is the main aim of a research project currently in process in Cyprus. In this chapter, the experimental results of the research project are presented. Specifically, a special test rig was set up and equipped with all the sensors necessary to measure all the parameters that are most likely to affect the ‘thermosiphonic phenomenon’. All tests were conducted according to ISO 9459-2:1995(E). The system was able to operate in various weather and operating conditions and could accommodate the change of inclination of the collector. During the experimental procedure, three different inclination angles of the solar collector were tested in order to evaluate their effect on the generation of thermosiphonic flow. The thermal performance of the collector was calculated both in thermosiphonic operation and also according to EN12975-2:2006 in order to determine the thermal performance at a flow and operation conditions specified by the standard. Finally, a series of correlations were attempted using the experimental results for the thermosiphonic operation of the collector which are the following: (i) the temperature difference of the water at the outlet and the inlet of the collector (ΔT) with solar global radiation, (ii) the water mass flow with the solar global radiation and (iii) the water mass flow with the temperature difference of the water at the outlet and the inlet of the collector. The results of the data analysis showed that the examined parameters were well correlated and also the optimum inclination angle in terms of the highest thermosiphonic flow generation was that of 45°