International Journal of Engineering & Technology, 2018
Reinforced concrete steel (RCS) moment resisting frames consist of structural steel beams joined ... more Reinforced concrete steel (RCS) moment resisting frames consist of structural steel beams joined to reinforced concrete columns. In the last decades, extensive research has been carried out for RCS structures because of the efficiency and economy in application for low to mid-rise structures in moderate to high seismic regions. This study aims to investigate the possibility of improvements or limitations of using RCS composite system for high rise RCS structures in regions of high seismicity. This paper presents the results of a parametric study using a finite element analysis. The study involves both linear elastic time history as well as design response spectrum analyses. The parametric study involves the effect of material (reinforced concrete and steel), plan aspect ratio, floor height and beam span. The findings indicate that the use of RCS composite material not only provides a more economic solution, but also increases efficiency in terms of resilience towards dynamic loadin...
International Journal of Engineering & Technology, 2018
This paper explores the question as to whether designs found in nature can assist in improving cu... more This paper explores the question as to whether designs found in nature can assist in improving current design of structures. The objective of replication of nature is to increase strength and durability with further emphasis on reducing material usage. The basis of this investigation starts with frame structure in the shape of the slope of a tree stump. The study focusses on the effectiveness of various truss design and how it compares to the design found in nature. Although the tree design was found to be no better than the existing frame structures (in terms of rigidity), it still may be potential in other application. In comparison to conventional truss design, the design following tree stump demonstrates a higher flexibility that may prove to be potentially beneficial in resisting lateral load resulting from wind or earthquake.
This paper presents the outcomes of investigating the dynamic behaviour experienced by composite ... more This paper presents the outcomes of investigating the dynamic behaviour experienced by composite footbridges and concrete footbridges when subjected to footfall induced vibration incurred by walking pedestrians. The study focuses on three set of varying parameters including bridge’s deck thickness, span length and width of footbridge. Models are generated and analysed using finite element method. Dynamic responses obtained from the footfall analysis are expressed in term of vertical displacements and accelerations. Data are tabulated and evaluated based on different parameters incorporated; meanwhile comparisons are made between concrete and composite footbridges. It was found that for both composite and concrete footbridges, the displacement and acceleration decrease exponentially with the increase of deck thickness. They also show decreasing trend with the increase of span length. Besides, an increase in displacement and acceleration is observed with the increase of footbridge width.
ABSTRACT This chapter addresses automatic printed Arabic text recognition. Arabic text recognitio... more ABSTRACT This chapter addresses automatic printed Arabic text recognition. Arabic text recognition has its own difficulties due to the cursive nature of the scripts, overlapping characters, large number of dots and diacritics, etc. In this chapter, we present a general framework for a printed Arabic text recognition system. We then discuss different phases of such a system, e.g., pre-processing, feature extraction, and classification. We present different reported techniques for each phase. In addition, different databases for printed Arabic text recognition are discussed here. We conclude this chapter by presenting several experimental results for hidden Markov model (HMM)-based printed Arabic text recognition.
Background: Although the conventional awake fiber-optic nasal intubation is most commonly used in... more Background: Although the conventional awake fiber-optic nasal intubation is most commonly used in anticipated difficult tracheal intubation, it has several potential difficulties. Aims: The aim of this study is to compare another technique modified tube first (MTF) technique with the conventional one in terms of time taken, ease of glottis visualization, number of attempts needed, and complications. Settings and Design: This was a prospective, randomized, open-label trial conducted on 60 patients with an anticipated difficult airway undergoing oromaxillofacial surgery at a tertiary care center. Materials and Methods: The patients were randomized into the MTF and conventional technique groups. Times from insertion of the fiber-optic scope into nares till vocal cord visualization (T1) and from T1 to complete intubation (T2) were measured and compared. Statistical Analysis Used: Statistical analysis was performed using the Statistical Package for the Social Sciences (SPSS) software ver...
International Journal of Engineering & Technology, 2018
Reinforced concrete steel (RCS) moment resisting frames consist of structural steel beams joined ... more Reinforced concrete steel (RCS) moment resisting frames consist of structural steel beams joined to reinforced concrete columns. In the last decades, extensive research has been carried out for RCS structures because of the efficiency and economy in application for low to mid-rise structures in moderate to high seismic regions. This study aims to investigate the possibility of improvements or limitations of using RCS composite system for high rise RCS structures in regions of high seismicity. This paper presents the results of a parametric study using a finite element analysis. The study involves both linear elastic time history as well as design response spectrum analyses. The parametric study involves the effect of material (reinforced concrete and steel), plan aspect ratio, floor height and beam span. The findings indicate that the use of RCS composite material not only provides a more economic solution, but also increases efficiency in terms of resilience towards dynamic loadin...
International Journal of Engineering & Technology, 2018
This paper explores the question as to whether designs found in nature can assist in improving cu... more This paper explores the question as to whether designs found in nature can assist in improving current design of structures. The objective of replication of nature is to increase strength and durability with further emphasis on reducing material usage. The basis of this investigation starts with frame structure in the shape of the slope of a tree stump. The study focusses on the effectiveness of various truss design and how it compares to the design found in nature. Although the tree design was found to be no better than the existing frame structures (in terms of rigidity), it still may be potential in other application. In comparison to conventional truss design, the design following tree stump demonstrates a higher flexibility that may prove to be potentially beneficial in resisting lateral load resulting from wind or earthquake.
This paper presents the outcomes of investigating the dynamic behaviour experienced by composite ... more This paper presents the outcomes of investigating the dynamic behaviour experienced by composite footbridges and concrete footbridges when subjected to footfall induced vibration incurred by walking pedestrians. The study focuses on three set of varying parameters including bridge’s deck thickness, span length and width of footbridge. Models are generated and analysed using finite element method. Dynamic responses obtained from the footfall analysis are expressed in term of vertical displacements and accelerations. Data are tabulated and evaluated based on different parameters incorporated; meanwhile comparisons are made between concrete and composite footbridges. It was found that for both composite and concrete footbridges, the displacement and acceleration decrease exponentially with the increase of deck thickness. They also show decreasing trend with the increase of span length. Besides, an increase in displacement and acceleration is observed with the increase of footbridge width.
ABSTRACT This chapter addresses automatic printed Arabic text recognition. Arabic text recognitio... more ABSTRACT This chapter addresses automatic printed Arabic text recognition. Arabic text recognition has its own difficulties due to the cursive nature of the scripts, overlapping characters, large number of dots and diacritics, etc. In this chapter, we present a general framework for a printed Arabic text recognition system. We then discuss different phases of such a system, e.g., pre-processing, feature extraction, and classification. We present different reported techniques for each phase. In addition, different databases for printed Arabic text recognition are discussed here. We conclude this chapter by presenting several experimental results for hidden Markov model (HMM)-based printed Arabic text recognition.
Background: Although the conventional awake fiber-optic nasal intubation is most commonly used in... more Background: Although the conventional awake fiber-optic nasal intubation is most commonly used in anticipated difficult tracheal intubation, it has several potential difficulties. Aims: The aim of this study is to compare another technique modified tube first (MTF) technique with the conventional one in terms of time taken, ease of glottis visualization, number of attempts needed, and complications. Settings and Design: This was a prospective, randomized, open-label trial conducted on 60 patients with an anticipated difficult airway undergoing oromaxillofacial surgery at a tertiary care center. Materials and Methods: The patients were randomized into the MTF and conventional technique groups. Times from insertion of the fiber-optic scope into nares till vocal cord visualization (T1) and from T1 to complete intubation (T2) were measured and compared. Statistical Analysis Used: Statistical analysis was performed using the Statistical Package for the Social Sciences (SPSS) software ver...
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