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This article describes a programme planning tool for complex research and development projects called the Process Tree Management Tool (PTMT). The PTMT was developed for use in programme management for a particular large, diverse, advanced weapon system. The PTMT includes a set of logic diagrams and specially developed software for manipulating the information represented by the logic diagrams. Two logic diagrams are included in the PTMT in its current form. One diagram, called a process tree, graphically represents the physical processes that occur when an engineered system functions successfully. Another, called a programme tree, includes gates representing elements of a successful research, development, and fabrication programme. These trees are used in conjunction to store programmatic and scientific information useful for a manager of a large, technical research and development programme. The objective of this article is to explain the methodology involved in development of the process tree and its associated programme tree and to describe a computer software tool based on the HYPERTALK language that make the logic diagrams vastly more useful to the manager. The methodology is illustrated by a relatively simple and understandable example.

To introduce a research carried out in a real world for implementing a dust control system (DCS) for controlling the indoor air quality (IAP) on the production floor of one of the major electronics company in Malaysia.

The paper is arranged as follows, a brief description of the significant of DCS in electronic industry and brief introduction to the electronic company as a case study company for introducing the DCS. The discussion on the characteristics management and planning tools (MPTs) that have been adopted as the analysing tools for assisting in the decision‐making process in identifying the problems and improvement strategies. It follows by the detail analysis phase regarding the implementation process that it as backbone for introducing the DCS. Finally a discussion about the result obtained from the MPT analysis on the techniques for identifying the root causes of the dust pollution problem as well as the best improvement strategies that can be adopted by the case study company.

Three analysis techniques from MPT have been used; there are relation diagram, tree diagram and prioritization matrices analyses. These techniques are very powerful for analysing the specific problem using verbal data. The outputs (results) from these techniques have been used as the solutions to the dust pollution problem. As a result, the implementations of DCS successfully reduce the dust level and stabilise the dust distribution on the production floor.

This paper offer a systematic way in identifying and controlling the IAP in industry.

This paper introduces very useful methods in decision making for identifying the solutions for environmental problem and implementation of DCS in a real world environment.

XML Schema Definition (XSD) is in the logical level of XML model and is used in most web applications. At present, there is no standard format for the conceptual level of XML model. Therefore, we introduce an XML Tree Model as an XML conceptual schema for representing and confirming the data semantics according to the user requirements in a diagram. The XML Tree Model consists of nodes representing all elements within the XSD. We apply reverse engineering from an XSD to an XML Tree Model to assist end users in applying an XML database for information highway on the Internet. The data semantics recovered for visualization include root element, weak elements, participation, cardinality, aggregation, generalization, categorization, and n‐ary association, and which can be derived by analyzing the structural constraints of XSD based on its key features such as key, keyref, minOccurs, maxOccurs, Choice, Sequence and extension. We use the Eclipse user interface for generating a graphical view for XML conceptual schema.

The main objective of this study is to investigate the 7 new quality control or the 7 new management tools and their use in manufacturing organisations. This research investigates the understanding, knowledge of the tools and the level of application of the tools within the manufacturing sector. In addition, this paper aims to identify the benefits, challenges and critical success factors (CSFs) for the application of the 7 new quality control (QC) tools.

An online survey instrument was developed, and data collection was performed utilising a stratified random sampling strategy. The primary strata/clusters were formed by quality professionals working in all aspects of manufacturing organisations and functions. A total of 86 participants from different countries responded to the survey.

The main finding of this study is that 10% of participants within the manufacturing sector perceived that the 7 new QC tools could solve above 80% of organisational problems. Another relevant finding presented in this paper is that tree diagrams were the most utilised of the 7 new QC tools within the manufacturing sector. The least utilised tools are arrow diagrams. The common benefits of using 7 new QC tools in the manufacturing sector are helping people define, measure and analyse the problem areas or even prioritises them and providing some form of structure to the problem-solving efforts. This paper also revealed that the 7 new QC tools were most used in the manufacturing area but least utilised in the new products and research and development (R&D) functions. This work also presents a list of CSFs and challenges required to properly apply the 7 new QC tools in the manufacturing sector.

This study was just carried out in manufacturing organisations. It would be interesting to try and expand to services sectors and compare use within the services sector.

Authors understand that this is the very first empirical study analysing the use and understanding of the 7 new QC or management tools within the manufacturing sector. The results of this study represent an important first step towards a complete understanding of the applicability of these tools in continuous improvement programs on a global scale and the context in which they can be utilized.

In the present worldwide situation, the survival of a business is a major crucial aspect. The business cannot be succeeded unless it produces the anticipated production levels. Achievement of this can be possible only by maintaining the equipment into an adequate level. Load-Haul-Dumpers (LHDs), as the main workhorse and massive transporting machines, are highly utilized in underground mining operations. Despite the usage of LHDs, these are prone to the uneven and unexpected occurrence of potential failures. These are causes to minimize the production and productivity of capital intensive equipment. To get a good profitability index, it is very necessary to have the required levels of equipment reliability and availability. Estimation of reliabilities and availabilities play a critical role in the performance evaluation of equipment.

By keeping the significance of the present research work in view in this research paper one of the well appropriate techniques such as fault tree analysis (FTA) was utilized to assess the reliability of the LHD system based on the function flow diagram. Best fit distribution of data sets were made by the utilization of Kolmogorov–Smirnov (K-S) test. Parametric estimation of theoretical probability distributions was done by utilizing the maximum likelihood estimation (MLE). Failure rate of each LHD system has computed based on the best fit results from “Isograph Reliability Workbench 13.0”. Reliability configuration of each LHD system has modeled using reliability block diagram (RBD), as well as the FTA.

Independent and identical distribution (IID) assumption of data sets was validated through statistic U-test (Chi Squared test). On the basis of test results, the data sets are in accordance with IID assumption. Therefore renewal process approach has been utilized for further investigation. Allocations of best fit distribution of data sets were made by the utilization ofK-S test. Parametric estimation of theoretical probability distributions was made by utilizing maximum likelihood estimation (MLE) method. Reliability of each individual subsystem has been computed according to the best fit distribution. The deductive method called RBD was utilized to investigate the given system reliability by analyzing with graphical representations of logic system and observed highest percentage of reliability as 69.44% (LH29). FTA has been utilized to investigate the availability percentage of a system and observed highest percentage value as 79.51% (LH29). This technique also helps to identify the most critical parts/cut sets by using Fussell-Vesely (F-V) importance measure.

As the reliability analysis is one of the complex techniques, it requires strategic decision-making knowledge for the selection of methodology to be used. As the present case study was from a public sector company, operating under financial constraints the conclusions/findings may not be universally applicable.

The present study throws light on this equipment that need a tailored maintenance schedules, partly due to the peculiar mining conditions, under which they operate. This analysis provides the information on several aspects such as present working condition of the machines, occurrence of various potential failure modes, influence of failure modes on its performance and reliable life aspects etc. Also, these investigations asses the forecasting of necessary managerial practices or control measures like possible design modifications and replacement actions of components to ensure the required levels of availability and utilization of the equipment. Both qualitative and quantitative analysis of FTA has been performed to determine the minimal/most influencing cut sets of the system and to estimate overall system availability within the work environment. Based on the computed results reasons for performance drop of each machine was identified and suitable recommendations were suggested to improve the performance of capital intensive systems.

In implementing Six Sigma and/or Lean Six Sigma, a practitioner often faces a dilemma of how to select the subset of root causes from a superset of all possible potential causes, popularly known as root cause analysis (RCA). Generally one resorts to the cause and effect diagram for this purpose. However, the practice adopted for identification of root causes is in many situations quite arbitrary and lacks a systematic, structured approach based on the rigorous data driven statistical analysis. This paper aims at developing a methodology for validation of potential causes to root causes to aid practitioners.

Discussion has been made on various methods for identification and validation of potential causes to root causes with the help of a few real life examples for effective Lean Six Sigma implementation.

The cause and effect diagram is the frequently adopted method for identifying potential causes out of a host of methods available for such identification. The method of validation depends on the practitioners’ knowledge on the relationship between cause and effect and controllability of the causes.

The roadmap thus evolved for the validation of root causes will be of great value to the practitioners as it is expected to help them understand the ground reality in an unambiguous manner resulting in a superior strategy for cause validation and corrective actions.

Discusses how, in response to a desire by Japanese quality practitioners to promote QC technique, seven new QC tools were brought together. Provides the recommended manner for the utilisation of these techniques. Asserts quality thinking should become pro‐active rather than re‐active. Exemplifies the tools. Describes a number of relations methods. Discusses the process decision programme chart. Asserts this is also used to anticipate the unexpected and to plan contingencies. Concludes that the seven new QC tools are being promoted by the Japanese Society for QC Technique Development indicating they can be used most effectively when combined in an interrelated manner.