Papers by Keyword: Assessment

Abstract: As the concern for the welfare of elderly people is rather poor in our country, unlike the other countries in the EU, it is a legitimate priority to look for improvements of the situation. Therefore the paper aims at presenting a non-invasive and creative procedure that allows the assessment and helps the rehabilitation of elderly people who suffer various physical traumas and are also affected by other diseases like high blood pressure, osteoporosis, osteoarthritis, etc. A case study is developed as a model for other future assessments and procedures in order to open new opportunities for the improvement of elderly people life quality.

Abstract: This paper aimed to develop a methodology for assessing environmental friendliness of turning processes from energy consumption’s perspective. This methodology was limited on the process level study, which turning process was chosen as the assessed process. Recently, the green manufacturing has become a very important matter due to environmental impacts caused by manufacturing processes. Reducing the amounts of input energy or increasing efficiencies of production equipment’s can help to achieve the green manufacturing level, but it does not indicate the level of energy consumption. Therefore, a methodology is needed to determine how green a manufacturing process on energy consumption’s perspective. In this case, an energy indicator can be used to evaluate the energy usage performance. Based on the experimental data from several different machines, regression lines is constructed (using data envelopment analysis) as the efficiency reference values. According to the position of the energy efficiency from the assessed process to the efficiency reference values, it will determine whether the process has a high or low efficiency (as the assessment result). This methodology has tried to indicate the level of energy consumption, by comparing the result from energy indicator with the reference value. Energy indicator for material removing processes is commonly used to predict the total energy consumption for energy assessment without comparing the result to the reference value.

Abstract: Raw wool contains high percentage by weight of natural contaminants. It is usually treated by a scouring process in the first stage of textile processing. Wool scouring process consumes large quantities of fresh water and produces concentrated effluent with very high oxygen demand, aggravating the water resource shortage and environmental impacts. Water footprint (WF) is a multidimensional indicator that shows water consumption volumes by source and polluted volumes by type of pollution. This study discusses the environmental impacts assessment of wool scouring process based on the WF theory. Through cases study, it was found that chemical oxygen demand (COD_Cr) was the most critical pollutant associated with the largest pollutant-specific original grey WF (WF_{ori, grey}), while NH₃-N was the most critical pollutant associated with the largest pollutant-specific residuary grey WF (WF_{res, grey}). The average WF_{ori, grey} of wool scouring process was 51878 m³/d, approximately 291 times of blue WF (WF_blue). After treatment of the scouring effluent through floatation reflux-biological contact oxidizing technology, the WF_{ori, grey} reduced to 558 m³/d. Refluxing and regulating, oil removal were two important processes that contributed largely to effluent treatment as they reduced WF_{ori, grey} by 28537 m³/d and 23171 m³/d, respectively.

Abstract: In the first part, this paper deals with the current status of the innovative equipment and systems in the manufacturing companies and its importance within the global competitiveness. In the subsequent parts of the paper, the characteristics of particular multi-criteria analysis methods and the determination of the weightings of individual aspects (assessment criteria) that influence the situation in the developing the innovative production equipment and systems in the specific fields of industrial logistics in the particular manufacturing company when applying the selected methods of multi-criteria analysis are outlined. From the obtained outcomes, it is obvious that the assessment aspects of the manufacturing company are: (1) the grade and quality of the innovation status; (2) the business aspects and competitiveness; (3) the grade and quality of attributes of production equipment and systems and (4) the effectiveness of the logistics processes. The final part of this paper is focused on the selected manufacturing companies, dealing with the production of industrial equipment and systems, in the particular country and the application of the specific methods of the multi-criteria analysis in order to make the empirical statistics and the final complex assessment.

Abstract: Currently, geometric deviations of machined parts can be measured following the recommendations outlined in ISO standards such as ISO-12780, ISO-12781, ISO-12180 and ISO-12181. Coordinate measuring machines have now become widely used for inspection hence the tracing and probing strategies recommended in these standards have become much more important. Unfortunately, only minimum number of sections and points are mentioned. Generally, in each section, only a single point will be sampled for the inspection processes. However, the interval between each pair of sampling points has to be smaller than half of the wavelength of the machined surface. Hence, in this research, a method for determining a suitable number of sampling sections and points for geometrical deviation assessment of machined parts made from CNC machining centers is introduced. In this method, the wavelength of a machined surface is predicted from the results of tests used to assess machine performance. Using Finished Test Pieces in ISO 10791-7-A160 as a case study, experimental results indicated that the number of assessed sections and points, calculated according to the introduced method, can be used for accurate measurements of the geometrical deviations of machined parts.

Abstract: Subsea processing equipment’s are deployed in Deepwater / subsea marginal field, fields having challenging reservoir characteristics (which includes: high viscosity, high GVF) in order to economically recover oil and gas. They includes: multiphase booster pump, subsea separation and compression equipment’s. These equipment’s faces a high level of uncertainty as regards well and reservoir conditions, putting the equipment in an unfavorable condition covering a wide and variable range of processes including transient Flow, variable oil flow, fluid pressures, temperature and gas compression effects. More so, knowledge engineers in different areas are assessing this domain in different ways making the performance parameters and relations to be defined differently when utilizing computer based tools for assessment and selection. A four step process is proposed which are: domain knowledge acquisition, failure data analysis, knowledge model and a knowledge base system will reveal the key components and parameters that are needed to make an optimum decision. The applicability of these four step process is demonstrated in the assessment and selection of subsea multiphase booster pumps.

Abstract: This article introduces an interactive multimedia application used for GMDSS training in the Romanian Maritime Training Centre - CERONAV by maritime/ river officers and cadets. The application actually covers the theoretical, introductory part as well as the assessment of theoretical knowledge as additional tool to the practical training in the simulator and demonstrates how an interactive platform supports the practical training to achieve the required competences for the radio operators’ job. The content of application could be very easily updated by instructors and trainees.

Abstract: This research introduces KPS (Korea Production System), which is a type of manufacturing innovation methodology. The KPS has been developed by KPC (Korea Productivity Center), which is a special corporation with the objective of industrial productivity improvement. In this paper, we show theoretical validity of the KPS, in which there are 6 principles (People Involvement, Field Standardization, Continuous Innovation, Flexibility of Production, Commercialization of production Information) and thirty core activities based on the above 6 principles, and the KPS has a list of 140 assessment items for evaluations of the above core activities. In addition, we summarize some differentiations between the KPS and other manufacturing innovation methodologies. During the past three years, the KPS has been used in productivity innovation partnership program between major companies and SMEs (small and mediums-sized enterprises) in Korea. In this program, the KPS has been applied in production lines of various SMEs, which are almost cooperative firms of global and major companies such as Samsung elec., POSCO, LG elec. and so on. To show the effectiveness of the KPS, we introduce outcomes of some real implementation cases in the production lines of SMEs, finally.

Abstract: Following the development of regional economy, especially the construction of Tianjin Binhai new district, environmental pollution and ecological hazards has been resulted from the pollutant discharge and reclamation etc. The environmental air quality is very important for the health of human being, so it is very important for analyzing and evaluating the environmental air quality for guiding the environmental management and control. In this paper, the environmental air quality of recent fourteen years in Tianjin is analyzed. Multiple scales method is applied to obtain the environmental air current situation. The results of analysis and assessment show the environmental air quality is becoming worse in recent years.

Abstract: Chlorine-based or per-oxygen-based decontaminants could be used for destruction of cyanide ion in the emergency management of leakage. During destruction, poisonous gases like ClCN and HCN were often produced. It may lead to serious damage for personal safety and quality of environment. In this study, the amount of gaseous products of ClCN and HCN during destruction of KCN by hypochlorite solutions and peroxyl acid were first measured. And quantitative risks assessments correspond to different damage criterions were established. Results showed that toxic HCN gas would form once KCN aqueous exposed to atmosphere. And different decontaminants would result in different hazardous gasses. Chlorine-based decontaminants reacted with KCN would cause toxic gas of ClCN, and it lead to relatively larger depth of damage. It would cause medial lethal depth of damage under certain conditions, such as higher concentration of decontaminant, lower flow speed, higher temperature and large volume of KCN being destructed. For per-oxygen-based decontaminants, toxic HCN gas produced would cause relatively smaller depth of damage.