Vintan L., Morariu D., Cretulescu R., Vintan M.. (2017) An Extension of the VSM Documents Representation, International Journal of Computers, Communications & Control, ISSN 1841-9836, Vol. 12, Issue 3, pp. 403 - 414, June 2017
In the paper the possibilities of process re-organizing in relation to simple principles for limiting waste in the production cycle have been presented. Based on value stream mapping and monitoring of performance indicators, the possibilities of changes identification of in the assembly line process have been presented. Furthermore, based on the availability, performance and quality values, it has been proved that relatively small changes can have a very positive effect on the assembly process. Based on the OEE coefficient, it has been found that the proposed changes improved the process's efficiency by more than 20%.
Lean Management is currently one of the best-known and is the most widely used management concepts in production enterprises. Lean creates such a culture of work in an organization that makes all participants in the organization interested in raising the level of quality, reducing costs and delivery time. However, there is no information about the influence of lean tools on the level of safety in production organizations. The paper presents the influence of five lean tools on the safety level by the example of metal manufacturing organization. The number of potentially dangerous situations and the number of accidents were taken as the measure of safety level. The obtained results indicates that the most important for the safety level is 5S, TPM while Kaizen, Poka-Yoka and VSM are smaller. The paper aims to broaden the knowledge about the dependence of the use of lean tools on the level of occupational safety.
K. Ramarao, B. Rajesh Babu, B. Kishore Babu, V. Veeraiah, K. Rajasekhar, B. Ranjith Kumar and B. Swarna Latha
In this work, Ni substituted magnesium spinel ferrites having general formula Mg1−xNixFe2O4 (where x = 0.0, 0.1, 0.15, 0.2, 0.25 and 0.3) were synthesized by standard solid state reaction method. All the samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), vibrating sample magnetometer (VSM), DC resistivity measurements. X-ray diffraction analysis confirmed the single spinel phase. The lattice constant decreased with increasing Ni content due to the difference in the ionic radii of Mg2+ and Ni2+ ions. The FT-IR spectra reveled two prominent frequency bands in the wave number range of 400 cm−1 to 600 cm−1, which confirmed the cubic spinel structure of obtained compound and completion of chemical reaction. Magnetic studies revealed that the saturation magnetization increased with the substitution of Ni. The increase in magnetization was explained on the basis of distribution of magnetic and non-magnetic cations among A and B sites of the spinel lattice. A significant influence of cation distribution on DC electrical resistivity and activation energy was observed.
Konrad M. Gruszka, Marcin Nabiałek, Katarzyna Błoch and Jacek Olszewski
Thermal treatment, undertaken at just below the crystallization temperature, has led to nanocrystallization and has had a significant impact on the shape of the hyperfine field induction distributions of Fe62Co10Y8B20 alloy and on its soft magnetic properties. In the amorphous ferromagnetic alloys, it is possible to indirectly determine the effect of the structure stresses, resulting from the presence of structural defects, on the soft magnetic properties of these materials. It has been found that a change in the parameters associated with the presence of structural defects affects the shape of the hyperfine field distributions of 57Fe.
D. Siva Kumar, K. Chandra Babu Naidu, M. Mohamed Rafi, K. Prem Nazeer, A. Ayisha Begam and G. Ramesh Kumar
Superparamagnetic iron oxide nanoparticles (SPIONs) have been synthesized using co-precipitation method. Their microstructure and dielectric properties were studied. The sugar solutions like glucose, fructose and sucrose were used as stabilizers to control the size of the SPIONs. The crystal structure and grain size of the particles were determined by X-ray diffraction. The magnetic studies of the samples were carried out using the vibrating sample magnetometer and their surface morphology was studied by HRTEM, FE-SEM and zeta potential. The dielectric properties of glucose-SPIONs (GF), fructose-SPIONs (FF) and sucrose-SPIONs (SF) were investigated in the frequency range of 10 Hz to 5 MHz at selected temperatures. The FF showed a high dielectric constant of 62 at 1 MHz and the dielectric properties of SPIONs were found to have been significantly improved, especially in the low frequency regime according to the Maxwell-Wagner interfacial polarization. The AC conductivity measurements revealed that the electrical conduction depends on both frequency and temperature. Impedance analysis was carried out using Cole-Cole plot and the conduction mechanism of the studied compounds was explained. R and C values were further calculated using RC-circuit.
Market situation and development in recent years shows, that organization's ability to meet customer requirements is not enough. Successful organizations are able to exceed the expectations of all stakeholders. They are building their excellence systematically. Our contribution basically how the excellence in automotive is created using EFQM Excellence Model in Total Quality Management.
One of the five primary objectives of the European Union within the framework of Europe 2020 is to increase the proportion of the tertiary educated population. The research task titled “The motivation of the student in the 21st century” is intended to address the factors that have both an impact on the decision of students to pursue higher studies and affect the choice of a specific field of study and a preferred form of study. The stimulus to the exploration was sparked by the mentioned EU initiative, interesting statistical data, the growing number of students studying in the external form compared to the daily option, and an increase of students from abroad. Therefore, it is necessary to identify the causes of these trends. Motivation of students is not researched in a systematic way in Slovakia, even though it is an important factor in a student’s decisionmaking process to study. Information was obtained by a questionnaire distributed to 105 students, evaluated using SPSS software and application of descriptive statistics.
Mohammad Hassan Omidi, Mahboobeh Alibeygi, Farideh Piri and Mohammad Masoudifarid
nanocomposite were studied by VSM, XRD and FT-IR.
Electrochemical experiments were performed with a 797 VA Computrace (Metrohm) for cyclic voltammetry studies (CVS). A conventional three-electrode system was used, including a platinum wire as an auxiliary electrode, Ag/AgCl (saturated KCl) as a reference electrode, and the prepared electrode made from the nanocomposite as the working electrode. A 1 M LiCl solution was used as an electrolyte. For characterization of the nanocomposite FT-IR (Fourier transform infrared) spectra were
Alicke, K. & Losch, M. (2010). Lean and mean: how does your supply chain shape up? Mckinney&Company
Benavides-Pena, I., Garza-Amaya, V., Garza-Madero, C. & Villarreal, B. (2017). Improving On-time delivery eliminating routing waste- a case study. Morocco, International Conference on Industrial Engineering and Operations Management, Apr. 11-13
Brown, A., Amundson & J., Badurdeen, F. (2014). Sustainable value stream mapping (VSM) indifferent manufacturing system configurations; applications and studies