Technology Reports of Kansai University (ISSN: 04532198) is a monthly peer-reviewed and open-access international Journal. It was first built in 1959 and officially in 1975 till now by kansai university, japan. The journal covers all sort of engineering topic, mathematics and physics. Technology Reports of Kansai University (TRKU) was closed access journal until 2017. After that TRKU became open access journal. TRKU is a scopus indexed journal and directly run by faculty of engineering, kansai university.
Technology Reports of Kansai University (ISSN: 04532198) is a peer-reviewed journal. The journal covers all sort of engineering topic as well as mathematics and physics. the journal's scopes are
in the following fields but not limited to:
The article deals with the internal ballistic of an air gun that utilizes the energy of compressed air to propel the projectile out of the barrel. In this study, a thermodynamic mathematical model describing the internal ballistic phenomena inside the working chambers of an airgun is developed. The core of this work is to derive a governing equation modeling the variation of gas temperature in a control volume including one or several incoming and outgoing mass airflow rates. A novel universal algorithm that allows to solve internal ballistics of all types of airguns is also developed and applied for the case of spring-piston airgun. To verify the mathematical model, the projectile muzzle velocity is measured using a Dopler radar system and compared to the theoretical result. The comparison reveals that the measured and calculated results of the projectile muzzle velocity are well agreed with the deviation less than 4%. Thus, the developed internal ballistic model of airguns and its solving algorithm can be used as a powerful tool to predict and improve the existing airguns performance or to design novel airgun systems.
In this work, modeling and determination of the stationary eccentricity and attitude angle for a short journal bearing with single external pressurization at an arbitrary point injection port are treated. As for hybrid journal bearing, both hydrodynamic and injection forces are simultaneously considered in the Reynolds Equation. Modeling of this point injection port is performed using a Dirac spatial delta function, which allows obtain pressure fields in closed analytical form. The pressure field given by analytical expression allows to determine, also in analytical form, the pressure force components, equilibrium eccentricity and attitude angle. A special case, when the applied load is collinear with the pressurized injection direction is analyzed, which corresponds to an injection port located at the upper part of the journal bearing. Tables relating eccentricity, attitude angle, external pressurization force and Sommerfeld number for the attained stationary position are given.
Today’s popularity of the Internet has since proven an effective and efficient means of information sharing. However, this has consequently advanced the proliferation of adversaries who aim at unauthorized access to information being shared over the Internet medium. These are achieved via various means one of which is the Distributed denial of service attacks – which has become a major threat to the electronic society. These are carefully crafted attacks of large magnitude that possess the capability to wreak havoc at very high levels and national infrastructures. This study posits intelligent systems via the use of machine learning frameworks to detect such. We employ the Deep learning approach to distinguish between benign exchange of data and malicious attacks from data traffic. Results shows consequent success in the employment of deep learning neural network to effectively differentiate between acceptable and non-acceptable data packets (intrusion) on a network data traffic (9pt).
The increasing awareness of the depletion of fossil fuel resources and their bad impact towards environmental lead to an application of biofuel as alternative choice. The production of biofuel from waste offers a triplet-facet solution includes economic, environmental and waste management. In the present study, the use of biofuel that most abundantly available for power generation is applicable in the form of waste. Coconuts are the abundant renewable resource of energy can be found in all around the world especially Southeast Asia like Malaysia, Indonesia and Philippines. In this study, the waste of coconut shell was prepared to become a biofuel in form of powder or pulverized. The sample was undergo burning process at five different air flow rate that been set up. The effect of burning pulverized coconut shell on environmental impact was studied from CO2 and CO emission. The influence of air flow rate on ash properties were studied using SEM image and EDX analysis. The results revealed that microstructure of coconut shell ash are irregular, asymmetrical, disperse and non-overlap compare to coal. The influence of air flow rate of primary gave effect on the CO2 and CO emission. As the air flow rate increased, the weight of carbon fly ash increases while oxygen experiencing the decreases. In addition, the existed elements such as C, O, Mg, Fe and Ni for each cases were determined. It was also found that the coconut shell is lower in ash content, it tends to produce less particulates and has almost no Sulphur oxides compare to coal. At the end of this work, research would like to recommend use of coconut shell as an additive material in heat generation as it is not containing harmful ash content.
The permeable asphalt surface has offered an alternative technology for storm water management, and its benefits include both environmental and safety. This paper is, therefore, focused on the application of permeable asphalt as alternative means for storm water control in order to contribute to the increasing environmental awareness and an evolving paradigm shift in control techniques. One of the keys to the success of this pavement surface type is in the design of the asphalt mix. The air void percentage, which is ultimately related to the effectiveness of the pavement surface to adequately control the runoff, is a critical component of the mix. However, special consideration is required in order to obtain higher air void percentages, while maintaining strength and durability within a wet climate. Permeable asphalt mix designs produced with PG-76 and PG 60/70 binders were evaluated at binder contents of 3.5, 4,4.5 and 5%and tested for durability and strength properties (drain down, indirect tensile strength, air void, Marshal Stability and water permeability) in cold climate conditions. Results show that an optimal permeable asphalt mix of permeability range 0.116cm/sec was recommended for use.
