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The reliability of process system not only affects the production and qualified rate of the product, due to the imperfect system of process causing the defects in the manufacturing process, but also makes the product producing early fault or reducing the service life. Therefore, the reliability of process...

The fuel supply quantity of high-pressure pump and the fuel supply quality from constant pressure valve to high pressure vitta was very important to capacity of the diesel engine. In this paper, the model of the fuel injection system is established by Hydism and the model is integrated with Isight in...

In this paper, a diffractive optical element(DOE) is designed as a spectrum splitting and concentrating element which is used in lateral multi-junction solar cells. The performance of the DOE by simulation indicates that optical efficiency over 80% can be achieved based on this design. The relationship...

The construction industry faces growing pressure to reduce its environmental footprint while meeting the needs of urban growth and infrastructure development. This paper critically examines sustainable practices in construction, focusing on how policy, technology, materials, processes, and governance...

Indigenous construction innovations in Ghana offer culturally rooted, cost-efficient, and environmentally sustainable alternatives to imported technologies. Despite this potential, uptake remains marginal. This study examines the factors that drive and hinder the adoption and integration of these technologies...

In orthopaedic surgery internal fixation of bone fractures using immobilization screws and plate is common procedure. This surgical procedure involved drilling into bone and fixative components interaction. Many problems are encountered with the bone drilling process such as holes accuracy, drill wander...

National laboratories are important par-ticipants in providing science and tech-nology education to both students and teachers. Several Department of Energy (DOE) national laboratories’ educational programs are analyzed in this study. The mission of educational programs is to en-rich science, technology,...

With over 900,000 residents arriving since 2017, the Rohingya refugee crisis in Cox’s Bazar, Bangladesh, has created one of the largest and most concentrated refugee populations globally. This rapid influx has strained local infrastructure, particularly water, sanitation, and hygiene (WASH) services,...

Vacuum differential pressure casting is one of the most advanced casting process where there are still serious process defects existed in large complex thin-wall castings. Combination of computer simulation and approximation modeling is applied to improve process reliability of vacuum differential pressure...

Undercut plays a crucial role in the industry of photochemical machining technology. This paper inspects the effect of undercut on the process parameter in Photochemical Machining (PCM) of SS304. A full factorial (33) Design of Experiments (DoE) were performed consisting of twenty-seven experimental...

As the automotive industry is growing at an increasing pace today, there is severe competition and pressure to produce vehicles, which meet the ever increasing expectations of the consumers. The demand for increased vehicular refinement ensures that many manufacturers implement stringent Noise, Vibration...

In order to obtain a deep understanding on the influence of process parameters on punch force evolution during deep drawing of AA6111 sheet at elevated temperatures, the design of experiment (DOE) and analysis of variance (ANOVA) were employed. The process parameters analyzed in this paper are forming...

Decisive requirement for the long-term stability of the artificial joint is to minimize the release of debris particles. The wear/debris induced osteolysis and aseptic loosening are the result of failure of metal-on-metal joint implants. Severe plastic deformation (SPD) processes have been used to adapt...

With the development of the stock market, listing has become one of the best ways for companies to develop. These companies are able to raise money in the equity market, while different types of investors come with an expectation of benefiting from potential stocks. The evidence suggests that this is...

As a solution of high efficiency and clean energy, fuel cell technologies, especially proton exchange membrane fuel cell (PEMFC), have caught extensive attention. However, after decades of development, the performances of PEMFCs are far from achieving the target from the Department of Energy (DOE). So,...

In the paper, a visual and integrated design optimization platform based on Surrogate-in-Process (SIP), called FlowComputer, is developed to support modular process modeling in intuitive and explicit manners. Besides discipline analysis components and generic modular controlling components, several surrogate-related...

Increasing attention on the environmental issue especially the wastewater from the palm oil mill effluent (POME) has become one of the great concern to many researchers. The excessive amount of untreated POME may cause the reduction of oxygen and sunlight in the water, which in turn affects the aquatic...

Doe performance is one of the things that need to be considered in increasing doe performance per year. This study aims to assess the reproductive performance of local goats under different feeding patterns by examining kid crop (the average number of offspring produced per doe) and natural increase...

In order to solve the problem of planning and optimizing the production takt of a key link in the rocket assembly workshop. The production takt is obtained through the modeling and Simulation analysis of the actual plant based on the Plant Simulation, a professional discrete Simulation software. The...

When performing the injection molding process, the influence of the set parameters such as injection time, injection pressure, and other parameters used will affect the mold result. The problem that arises when doing injection molding using multi-cavity molds is the appearance of product defects. The...

Powder coating of metal product is essential to avoid corrosion and to improve surface properties. The coating thickness alone doesn't ensure the corrosion resistance. If surface is not covered completely, the micro-gaps can initiate rusting. Hence, microstructures should be observed for various coating...

Agrifood standards impede trade by increasing compliance costs, but they can also enhance trade by signalling quality. This paper disentangles the trade costs and demand-enhancing effects of two important standards—technical barriers to trade, and sanitary and phytosanitary measures—on (i) global agricultural...

Considering the inefficiency of classical DOE (Design Of Experiment) based polynomials RSM (Response Surface Method), this paper proposes a simplified experimental modeling method to approximate a quadratic polynomials RSM model (called Archetype in this paper). This simplified model contains the same...

Understanding the Cumulative Fertility Rate (CFR) of any country is relevant for national planning and ensuring environmental sustainability. In this article, we investigate the effect of socio-demographic and geographical factors, and their interactions on recent Fertility Rates amongst Ghanaian women....