Quasiparticle light elements and quantum condensates in nuclear matter

Nuclei in dense matter are influenced by the medium. In the cluster mean field approximation, an effective Schr\"odinger equation for the $A$-particle cluster is obtained accounting for the effects of the surrounding medium, such as self-energy and Pauli blocking. Similar to the single-baryon states (free neutrons and protons), the light elements ($2 \le A \le 4$, internal quantum state $\nu$) are treated as quasiparticles with energies $E_{A,\nu}(P; T, n_n,n_p)$ that depend on the center of mass momentum $\vec P$, the temperature $T$, and the total densities $n_n,n_p$ of neutrons and protons, respectively. We consider the composition and thermodynamic properties of nuclear matter at low densities. At low temperatures, quartetting is expected to occur. Consequences for different physical properties of nuclear matter and finite nuclei are discussed.Comment: 5 pages, 1 figure, 2 table

The Key Success Factors for Lean Manufacturing versus Six Sigma

The aim of this study is to investigate and identify the key success factors of implementing lean manufacturing and six sigma in separate ways. The study applies a quantitative approach and statistical analysis to determine the results collected from the French industry. Findings revealed that there exist statistically significant differences in the level of importance between the implementation of lean manufacturing and six sigma across the common success factors such as culture change, communication and involvement of employees, among others. On the other hand, there were similarities in the degrees of importance regarding the common success including top management commitment, skill and expertise and linking method to supplier, etc. The findings can assist an organization to be more careful with the success factors of each method, in addition to helping them in determining the appropriate method that enables exploration between lean manufacturing and six sigma based on the capacity of an organization to apply the success factors. Literature reviews regarding comparison of key success factors of lean manufacturing and six sigma had not been tested earlier, which have been considered in this study.

Impacts of Lean Manufacturing and Six sigma

International audienceThe purpose of this article is to determine the companies performance for industries applied lean manufacturing and six sigma. Study results indicate that companies implementing lean manufacturing and six sigma have wealthy performance across financial performance, operational performance and innovation performance. It discovers various lean six sigma tools such as Kanban, TPM, 5S, VOC, Gemba etc, associated to improve financial or operational or innovation performance. Corporations get more advantage in using quality practices to improve quality, reduce cost, improve productivity and so on, compared to companies that have not implemented at all

Evaluation of the Operational Performance in Implementing Lean Manufacturing and Six Sigma

International audienc

Assessment of Lean Manufacturing and Six sigma operation with decesion making based on the Analytic Hierarchy Process

In this paper, an AHP model was used for determining the optimal method and the most efficient methodologies of lean manufacturing and six sigma in various industries based on three criteria. These criteria are financial performance, operational performance, and innovation performance. Study results show the impact of three categories that are based on the implementation of a specific method. Findings show that companies implementing lean and six sigma were more effective than companies that implemented either lean manufacturing only or used limited tools of lean six sigma across operational and financial performance. Meanwhile companies that used limited tools of lean six sigma gained minimal performance improvements. Additionally, the results illustrated that automobile industries followed by service and electronics industries have the most effectiveness in innovation, operational and financial performance. Moreover, this study shows struggle of lean manufacturing and/or six sigma implementation with transportation and health industries. Bibliographic investigation showed there is limited scientific research focusing on lean manufacturing and six sigma implementation within French industries

A comparative exploration of lean manufacturing and six sigma in terms of their critical success factors

Lean manufacturing and six sigma methodologies have been widely used in a large number of companies worldwide. However, many companies have found it difficult to successfully implement and sustain lean manufacturing and six sigma. It is, therefore, very important for companies to identify and understand the critical success factors for successfully implementing either six sigma or lean manufacturing. A comparative examination of lean manufacturing versus six sigma was conducted, and the success factors relevant to these two methodologies were identified. It was found that the most important success factors differed in terms of their significance for six sigma and lean manufacturing. Specifically, for organizations that have successfully implemented six sigma, skills and expertise ranked highest in importance. In contrast, for organizations that have successfully implemented lean manufacturing, employee involvement and culture change ranked highest. This study builds on current knowledge and fills a gap in the literature by providing more insight into the most critical success factors within companies that have already successfully implemented these methodologies. The results of the study will help organizations to make more mature and careful decisions regarding the critical success factors of each method. Therefore, in the pre-implementation stage, organizations can identify how their capabilities and resources can be utilized to accomplish the critical success factors for the implementation of lean manufacturing and six sigma, either simultaneously or sequentially. This is the first study that has conducted an examination to compare lean manufacturing and six sigma in terms of the importance of the same specific critical success factors

A new conceptual framework for environmental decision based on fractal philosophy

The expression „environmental decision” cannot be explained or summarized by a simple formula containing all the ideas focused on it. This paper aims to develop a conceptual framework for environmental decision (at organizations level) using fractal paradigm philosophy in its construction, with the purpose to bring order and simplicity for this type of decision. The study is based on the analysis of several environmental documentations (existing at the level of large organizations located in the North Easter Region of Romania), discussions with specialists in the field, and literature review. The new conceptual framework for environmental decision brings a real and substantial contribution materialized in ordering the levels of different environmental “problems”, at organizational level, and implicitly the related environmental decisions. The need for this new theoretical framework results from the analysis of existing inconsistencies at organizations level regarding the environmental decisions. The inconsistencies are generated by an incorrect delimitation or even the absence of environmental responsabilities absolutely necessary for effective environmental decision making process, and not only. This conceptual framework developed as a support tool for environmental decision making is founded on multidisciplinary principles (fractal philosophy) as the first attempt of this kind retrieved so far in the literature of general environmental management

Conceptual Research Model of Factors that Influence Environmental Knowledge Management at Organizational Level

Accelerated development of humanity in recent decades generated a double effect as a result: (a) the development of economies, creating social welfare, on the one hand, and (b) a enormous pressure on the environment, causing pollution, on the other hand. Therefore the organizations need efficient management systems - which can be considered - to give them a plus on the competitive market; environmental management system with environmental knowledge management subsystem (EKMS) can be considered as the key to success of industrial organization. Low efficienty level of environmental knowledge management, operated by decisional agents (simple employee or manager in the position they hold) in the Romanian organizations (mainly the industrial organizations) is the main problem approached by this paper (MP). This paper intends to resolve the problem covered above (MP) designing a quality analysis model for environmental knowledge management and sinecvanon identifying the important factors that influence it (collecting data / information from: a. analysis of different documents (environmental documentation / job descriptions / organization and operation regulations) from the 10 industrial organizations of NE Region of Romania and beyond; b. analysis of the specialized literature (focusing on previous studies conducted))