Simplification of wastes for a warehouse using Boolean logic: A conceptual paper

Warehouse accumulate wastes consisting of inventory, waiting and transportation. However, the existence of warehouse will increase the operation expenditure and can lead to profit losses. Therefore, manufacturers need to identify and minimize wastes to reduce the consumption of resources and keep minimum inventory in the warehouse. Value Stream Mapping (VSM) is an approach to minimize waste. This tool visualizes the information and material flow of manufacturing activities. The development of a model based from VSM determined the current state of wastes in a warehouse. From the information flow, the optimum combination of wastes was determined through Boolean concept. The wastes are simplified and combined by passing through the Boolean operators consist of AND Gate and OR Gate. The outcomes of this paper is to propose a conceptual model of new VSM to identify and minimize wastes in a warehouse. At the same time, to propose a method that can cater for time consumed in every activity which differs from one station to another

Waste simplification for warehouse using Boolean logic

Warehouse accumulates non-value added or wastes activities consist of inventory, waiting and transportation. The warehouse is a must to prevent any unforeseen events causing failures to implement the Just-In-Time concept. However, the existence of the warehouse will increase the operation expenditure and can lead to the profit losses. Therefore, the manufacturer needs to identify and eliminate the wastes to reduce the consumption of the resources and keep minimum requirement of the activities such as inventory, waiting and transportation in the warehouse. Value Stream Mapping is one of the Lean tools as an approach to eliminate the non-value added or wastes. This tool visualizes the information and material flow of the manufacturing activities. The development of a model based from Value Stream Mapping determined the current state of the wastes existed in the warehouse activities. The model is used to identify and eliminate the waste in the warehouse. From the information flow, the optimum combination of the wastes was determined through Boolean concept. The wastes are simplified and combined by passing through the Boolean operators consist of AND Gate and OR Gate. The expected outcome of this paper is to propose a conceptual model of new value stream mapping to identify and eliminate the waste in the warehouse. From the removal of wastes, the profit can be increased by reduction of the operation expenditure of the manufacturer

Knowledge management to boost productivity in manufacturing

Data are the crucial element for productivity improvement and the evaluation or measurement process in the manufacturing sector because the data can tell the real situation about the production site. The dataare useful for productivity improvement by using certain lean manufacturing’s tools such as Value Stream Mapping (VSM), Single Minutes of Exchange Die (SMED), Total Productive Maintenance (TPM), and others. The data are also necessary for performance measurement. In this paper, we discuss the necessary data that should be included in a knowledge repository for manufacturing where the data then will be used by an assessment tool. The assessment tool is an important factor because knowledge management has a deep relationship with performance evaluation and measurement. Data Management to boost productivity in manufacturing can be divided into five phase and consists of in fourteen steps

Salinity effects on the embryonic and larval development of the tropical species of Indo-Pacific sea urchin, Salmacis sphaeroides (Linnaeus, 1758)

Salmacis sphaeroides (Linnaeus, 1758), is one of the regular echinoids, distributed in the warm Indo-West Pacific Ocean including Johor Straits between Malaysia and Singapore. It has significant biological, ecological, aquacultural, conservational and nutritional values but still under the states of determination and exploration in Malaysia. Effects of salinity tolerances on fertilization, embryonic, early larval development and growth performances of this high-valued sea urchin, S. sphaeroides were examined in a controlled laboratory condition. The experiment was designed with seven different salinity treatments (15, 20, 25, 30, 35, 40 and 45 PSU), each of which was replicated. Fertilization rate was significantly highest (P 0.05) recognized among these three salinity levels on prism larval length and width. However, significance differences (P> 0.05) were noted in morphometric characters of 2-arm and 4-arm pluteus larvae. The findings of the this study indicate that S. sphaeroides is stenohaline and do not survive and develop out of the range from 25 to 35 PSU salinities. This study represents the first successful attempt to investigate the effects of different salinity levels on the embryonic and early larval development in tropical sea urchin, S. sphaeroides. The findings from the present study would immensely be helpful towards the development of breeding, larval rearing and seed production of this commercially important sea urchin for aquaculture production

Structural performance of bolted moment connection of cold-formed single channel section

This paper presents an experimental investigation on bolted moment connections between single cold-formed channels connected back-to-back at the joints. A total of ten column-base connection tests and beam-column sub frame tests with different connection configurations were conducted to investigate the performance of the connections in term of strength and stiffness. Two modes of failure were identified from the tests; 1) Mode BFcsw: Bearing failure in section web around bolt hole. 2) Mode FFcs: Flexural failure of connected section. Among all the tests, the moment resistance of bolted moment connections with four bolts per member ranged 70 - 90 % of the moment capacities of the connected members. Consequently, it can be concluded that the use of cold-formed steel sections connected back-to-back at the joints allows simple and effective connection to be formed among cold-formed steel sections leading to improved build ability

Knowledge Management To Boost Productivity In Manufacturing

Data are the crucial element for productivity improvement and the evaluation or measurement process in the manufacturing sector because the data can tell the real situation about the production site. The data are useful for productivity improvement by using certain lean manufacturing’s tools such as Value Stream Mapping (VSM), Single Minutes of Exchange Die (SMED), Total Productive Maintenance (TPM), and others. The data are also necessary for performance measurement. In this paper, we discuss the necessary data that should be included in a knowledge repository for manufacturing where the data then will be used by an assessment tool. The assessment tool is an important factor because knowledge management has a deep relationship with performance evaluation and measurement. Data Management to boost productivity in manufacturing can be divided into five phase and consists of in fourteen steps

Effects of salinity on embryonic and early larval development of a tropical sea urchin, Salmacis sphaeroides

Effects of salinity on fertilization, embryonic stage, and early larval development and growth performances of short-spined white sea urchin, Salmacis sphaeroides were conducted under a controlled laboratory condition. The experiment was carried out with seven salinity treatments (15, 20, 25, 30, 35, 40 and 45 PSU), each of which was triplicated. Significantly highest fertilization success was achieved at 30 PSU, followed by those at 25, 35, 20, 40 and 45 PSU, while the lowest value was obtained at 15 PSU, decreased with increasing and decreasing salinities (p.05) were noted among these three salinity levels on prism larval length and width. However, significance differences (p>.05) were noted in morphometric characters of 2-arm and 4-arm pluteus larvae. The findings of the this study indicate that S. sphaeroides is stenohaline and do not survive and develop out of the range from 25 to 35 PSU