AiGERM: A logic programming front end for GERM

AiGerm (Artificially Intelligent Graphical Entity Relation Modeler) is a relational data base query and programming language front end for MCC (Mission Control Center)/STP's (Space Test Program) Germ (Graphical Entity Relational Modeling) system. It is intended as an add-on component of the Germ system to be used for navigating very large networks of information. It can also function as an expert system shell for prototyping knowledge-based systems. AiGerm provides an interface between the programming language and Germ

Geometrical design of stand pipe air distributors for the combustion of municipal solid waste in a fluidised bed

The new geometrical design of stand-pipe air distributor for the combustion of the municipal solid waste was presented. The new design of the air distributors enables penetration of incombustible and unburnt carbon through opening between the air distributors, thus providing easy maintenance work. The fluidized bed experimental rig was constructed using Perspex column in which air was supplied through the distributors below it. In order to establish the final geometrical design of the air distributors, several design parameters were investigated. The effect of orifice size, distance between orifice and distance between distributor pipes on the fluidization behaviour were studied. Investigation on the effects of various orifice sizes of 1.5 mm, 2 mm, 3 mm, 4 mm and 5 mm showed that the 3 mm orifice size exhibited the most stable fluidization behaviour. Investigation on some selected orifice distances of 10 mm, 20 mm, 30 mm and 40 mm also found that the 10 mm orifice distance exhibited stable growths of bubbles. Various pipe distances of 30 mm, 40 mm, 50 mm, 60 mm and 70 mm were also investigated and the most suitable pipe distance was 70 mm

Epitaxial growth of Cu (001) on Si (001): Mechanisms of orientation development and defect morphology

We describe the evolution of microstructure during ultrahigh vacuum ion beam sputter deposition of Cu (001) at room temperature on hydrogen-terminated Si (001). In situ reflection high energy electron diffraction indicates growth of an epitaxial Cu (001) film on Si (001) with the intensity of the Bragg rods sharpening during 5–20 nm of Cu film growth. Post-growth x-ray diffraction indicates the Cu film has a mosaic spread of (001) textures of about ±2° and that a small fraction (0.001–0.01) is of (111) textures. High-resolution transmission electron microscopy shows an abrupt Cu/Si interface with no interfacial silicide, and reveals an evolution in texture with Cu thickness so as to reduce the mosaic spread about (001). Moiré contrast suggests a nearly periodic elastic strain field extending into the Cu and Si at the interface. Other aspects of film growth which are critical to epitaxy are also discussed

Comparison of Lung Functions Among Asthmatic Children in Malaysia

A comparative study was conducted on 163 asthmatic children from Kuala Lumpur (polluted area) and 38 asthmatic children from Terengganu (less polluted area). The objective of this study was to compare the lung functions of the asthmatic children between the 2 sexes and study areas. Questionnaires and diary cards were used to obtain background information and frequency of asthma attacks. A spirometer was used to measure lung functions of the asthmatic children. Findings showed that there was a significant difference in the FEV,% predicted (p=0.002), FEV/FVC % predicted (p =0.001) and the %FEV/FVC (p=0.002) between male children in the two areas. However, only the FEV,% predicted (p=O.Oll) was significantly different between the female children in the two areas. Significant correlation was also found between the frequency of asthma attacks with FEV)% predicted (p=0.008), FEV/FVC % predicted (p=O.OOI) and % FEV/FVC (p=O.OOI) among the asthmatic children Kuala Lumpur but no significant correlation was found among the asthmatic children in Terengganu

Turboelectric Distributed Propulsion System for NASA Next Generation Aircraft

Next generation aircraft, more specifically NASA aircraft concepts, will include new technologies and make many advancements in fuel economy and noise. However, there are some challenges associated with the latest technologies that NASA is planning to use for the next generation aircraft. For example, these aircraft concepts require large amounts of electrical power to generate the required thrust throughout a notional flight profile. One of the new technologies is using advanced propulsion systems, such as the Turboelectric Distributed Propulsion (TeDP) system, which is significantly different from current aerospace high bypass turbofan based propulsion system. The TeDP propulsion system replaces the traditional turbofan engines with a series of embedded electrical fans. The blended wing body aircraft, N3-X (Boeing 777 class), that NASA proposed will have as many as 14 electric fans mounted on the upper aft surface of the aircraft wings. In addition to improved aircraft efficiency, this propulsion system change will significantly reduce noise generation, and provide the capability of short take-off and landing. A dynamic model of the ducted fan distributed propulsion system was developed and simulated for different notional flight profiles. The results show that the ducted fan distributed propulsion system dynamic model and the control system successfully generate the required thrust for the flights and capture the transient behavior of the system throughout the flight profiles. In addition, the dynamic model was used to model a 50 passenger regional aircraft. This study shows the benefit of both the TeDP system and the flexibility of the developed model. The contribution to knowledge is the evolution of the evaluation model that helps researcher\u27s understand propulsion systems such as the TeDP system of NASA N+3 class aircraft. By identifying and understanding the principal challenges and possibilities provided by the technology, this research further contributes to defining a roadmap of the new technology propulsion system for future research

A Framework to Detect the Susceptibility of Employees to Social Engineering Attacks

Social engineering attacks (SE-attacks) in enterprises are hastily growing and are becoming increasingly sophisticated. Generally, SE-attacks involve the psychological manipulation of employees into revealing confidential and valuable company data to cybercriminals. The ramifications could bring devastating financial and irreparable reputation loss to the companies. Because SE-attacks involve a human element, preventing these attacks can be tricky and challenging and has become a topic of interest for many researchers and security experts. While methods exist for detecting SE-attacks, our literature review of existing methods identified many crucial factors such as the national cultural, organizational, and personality traits of employees that enable SE-attacks not considered by the other researchers. Thus, this thesis aims to address the gap by identifying and analyzing all the factors that make the SE-attack possible. We have developed a framework that operates in an enterprise environment and can detect the susceptibility of victims to SE-attacks. It relies on mapping Gragg’s psychological triggers of social engineering to three groups of factors, namely the national cultural factors, the organizational factors, and the personality traits of employees. Our analysis demonstrates that there is a correlation between the social engineering triggers and the three-layered factors that make employees susceptible to social engineering attacks. Thus, adding these factors in the proposed framework detects susceptibility of victims. Finally, we introduce a proposed framework that would detect and recognize weaknesses and susceptibility of employees in an organization which can be used for enhancing awareness and employee training to better recognize and prevent SE-attacks

Evolution of structural and magnetic properties in Ta/Ni_81Fe_(19) multilayer thin films

The interdiffusion kinetics in short period (12.8 nm) Ta/Ni81Fe19 polycrystalline multilayer films has been investigated and related to the evolution of soft magnetic properties upon thermal annealing in the temperature range 300-600-degrees-C. Small angle x-ray diffraction and transmission electron microscopy were used to estimate the multilayer period. Interdiffusion in the multilayers was directly computed from the decay of the satellites near (000) in a small angle x-ray diffraction spectrum. A kinetic analysis of interdiffusion suggests that grain growth is concurrent with grain boundary diffusion of Ta in Ni81Fe19. The evolution of soft magnetic properties of Ni81Fe19, i.e., lowering of 4piM(s) and increase in coercivity H(c), also lend support to the above analysis

Assessment 0f Proximate, Mineral Elements and Amino Acids Profile of Weaning Food Formulated From a Local Variety of Pennisetum Glaucum, Roasted Sesanum Indicum and Euastacus Spp

Sprouted cereal and legume complementary weaning food were prepared from a local variety of Millet, Sesame seed and crayfish, the complementary flour blends were mixed into various ratios 60:20:20 as MSC (60 parts of millet: 20 parts of sesame and 20 parts of crayfish), 65:35 as MS (65 parts of millet and 35 parts sesame) and 75:25 MC (75 parts of millet, and 25 parts of crayfish) respectively, hence compared with commercial weaning food celarac Cl. A standard methods were used for the analysis .Crude protein, crude fat, crude fiber of the formulation increase significantly (p≤0.05) which ranged from 20.10±0.15, 17.52±0.02 and 9.22±0.06 compared to the reference value of 18.50±0.34, 8.31±0.30 and 0.11±0.01 respectively. Moisture and ash content values were higher compared to the reference values as 8.25±0.025 and 4.78±0.08 to 5.58±0.01 and 1.94±0.01. Elements composition of sodium 114.71±1.33, iron 4.72±0.05, calcium 389.14±0.03 and zinc 3.03±0.03 were significantly higher than the reference value 15.86±0.08, 1.62±0.01, 110.62±0.39 and 1.28±0.01 respectively. While the values of Magnesium, Phosphorous, and potassium are lower compared to the reference value. Amino acids content showed a significant increase in the contents of lysine 3.95±0.01, methionine 2.43±0.01 and tryptophan 3.75±0.02 to that of the reference value 2.70±0.0.01, 1.24±0.01 and 2.27±0.01. Functional properties with WSI and FC are significantly low compared to the formulated diets as 288.00±1.00 and 360.00±1.00 to 391.00±1.00 and 502.00±1.00 respectively. Key words: Sprouted, formulation, weaning food, millet, sesame and crayfish. DOI: 10.7176/JNSR/13-18-07 Publication date: December 31st 202