Critical Success Factors Of Customer Relationship Management At Private Hospitals In Malaysia

The purpose of this study is to explore the critical success factors of Customer Relationship Management (CRM) in Malaysian private hospitals. After reviewing the related literatures about CRM success factors, it was found out that the among critical success factors are the top management support, technological readiness, and knowledge management capability are the independent variables that the researcher is interested to study. These are main factors that were defined by Croteau and Li (2003)

Fast Terahertz Metamaterial/Graphene-Based Optoelectronic Devices for Wireless Communication

Research in the terahertz (THz) band, which is broadly defined as 0.1-10 THz, is an active area of research driven by applications in sixth generation (6G) and beyond for communications, spectroscopy, imaging, and sensing. In order to exploit the full potential of all these applications, fast integrated circuitry is required. This work revolves around removing this bottleneck. Achievement of efficient dynamic modulation requires the implementation of active material. Amongst many different approaches to achieve active modulation, metamaterials/graphene-based technology is establishing itself as a benchmark for THz operation due to its versatility, power efficiency, small footprint, and integration capabilities. Our devices have been modulated all-electronically, as described in Chapters 4 and 6, and all-optically as reported in Chapter 5. The fabrication of the novel design based on metamaterial (MM) and graphene for amplitude, phase, and polarization modulations is reported in Chapter 3. The optoelectronic behaviour of this modulator is tested in a THz time-domain spectroscopy (THz-TDS) setup as demonstrated in Chapter 4. By choosing the appropriate THz-TDS setup configuration, a spectral amplitude extinction ratio of >10 dB (>93%) at the resonant frequency of 0.8 THz is demonstrated. The spectral phase of THz radiations is actively tuned by >27o at 0.62 THz frequency. Linear to circular polarization conversion with nearly 100% of conversion efficiency is reported demonstrating almost an independent control of circular dichroism (CD) and optical activity (OA) as mentioned explicitly in Chapter 6. Dynamic changes of ellipticity are reported to exceed 0.3 in ratio at resonance. The OA of transmitted THz radiations is continuously rotated by >21.5o at 0.71 THz by varying the gate. These values are in line with acquainted literature with graphene-based or 2-dimensional electron gas modulators but with higher reconfiguration speed. The helicity, either right or left circular polarization states, of elliptical waves can be controlled. These results are of great importance for fundamental research of polarization spectroscopy, polarization imaging, or THz applications in the pharmaceutical and biomedical fields. An all-electronic controlled metamaterial-based THz modulator is demonstrated to achieve a recorded operating speed >3 GHz which is limited by the available instrumentation as illustrated in Section 7.1. The achievements in the modulation speed (in GHz range), amplitude extinction ratio (>10 dB), phase shift tuning (27o), and nearly decoupled control of OA and CD of THz waves are the key values of this device, which is undoubtedly meaningful for communication applications and has a certain impact on the THz modulator technology. The achieved GHz modulation speed of this hybrid MMs/graphene device is within very good agreement with previous literature reported on pristine graphene. This result provides an upper intrinsic limit of the maximum reconfiguration speed of these devices to 100s of GHz and, at the same time, reinforces the use of metamaterial/graphene optoelectronic devices for ultrafast modulation of terahertz waves. This overall remarkable performance of an optoelectronic modulator based on metamaterial/graphene resonators is capable of efficiently modulating THz radiation all-electronically with GHz-reconfiguration speed. It is worth highlighting that this exceptionally high reconfiguration speed, the highest reported so far to the best of our knowledge for a graphene-based integrated device, was not achieved at the expense of the other performances, e.g. amplitude and polarization modulation depths. These results represent great progress for several terahertz research and ultrafast photonic applications, such as the realization of fast deep, and efficient THz circuitry for the investigation of exotic quantum phenomena, wireless communications, and laser diodes stabilization in quantum electronics

Feasibility study on utilization of palm fibre waste into fired clay brick

Malaysia is the second largest of palm oil producer after Indonesia, which contribute to 50 % of palm oil production. With this demand, the increasing of palm oil plantation over the years has led to the large production of agricultural waste, for example palm fibre waste. This study investigates different percentages of palm fibre (0 %, 1 %, 5 % and 10 %) to be incorporated into fired clay brick. Manufactured bricks were fired at 1 °C/min heating rate up to 1050 °C. The effects of manufacture bricks on the physical and mechanical properties of manufactured brick were also determined. All brick samples were tested due to the physical and mechanical properties which include dry density, firing shrinkage, initial rate of suction (IRS), water absorption, porosity and compressive strength. Findings show that increasing palm fibre waste affected the properties of brick, which decreased their density, besides increased firing shrinkage, IRS, water absorption, porosity and compressive strength. However, all the manufactured brick still followed the requirement

Minimization of tool path length of drilling process using particle swarm optimization (PSO)

In the era of challenging economic, the industry in our country has been forced to produce a good quality product and increase the productivity of machining process simultaneously in order to compete with other countries. Drrilling process is one of a very important cutting process in industry. In a drilling for machining by Computer Numerical Control (CNC) such as drilling machines, the parameter of the tool routing path for the machining operation plays a very important role to minimize the machining time (Tiwari 2013, Rao and Kalyankar 2012) . This machine can be used with procedures for drilling, spreading, weaning and threading with a lot of the holes precisely. In order to increase the efficiency and productivity of drilling process, optimization on parameters of process can lead to better performance. Optimization of holes drilling operations will lead to reduction in time order and better productivity of manufacturing systems. Optimizing the tool path has played an important role, especially in mass production because reducing the time to produce one piece eventually lead to a significant reduction in the cost of the entire series (Pezer, 2016). In various publications and articles, scientists and researchers adapted several methods of artificial intelligence (AI) or hybrid optimization method for tool path artificial immune system (AIS), genetic algorithms (GA), Artificial Neural networks (ANN) Ant Colony Optimization (ACO) and Particle Swarm Optimization (PSO) (Narooei and Ramli, 2014). These methods were been proven that can produce better performance and increase the productivity of drilling process. Therefore, in this study, the Particle Swarm Optimization (PSO) algorithm was develop in order to minimizing the tool path length in the drilling process which can produce the better results for the required machining time process. For this study, the main purpose is to apply the Particle Swarm Optimization (PSO) algorithm for use in searching for the optimal tool routing path for in simulation of drilling proces

Hazard identification, risk assessment and risk control: a study at construction site

Occupational Safety and Health Act (OSHA) is an Act to make further provisions for securing the safety, health and welfare of persons at work, for protecting others against risks to safety or health in connection with the activities of persons at work, to establish the National Council for Occupational Safety and Health, and for matters connected therewith. This study focuses on infrastructure construction in Pagoh Education Hub. In present days, despite of knowledge in OSHA act, workers often proceed the work without considering any safety precaution or act at workplace as stated in OSHA Act. Due to ignorance of workers and employee on OSHA Act, workers are exposed to danger and hazard at their workplace causing them minor or worst fatal injury. The data collection was carried out through site investigation using Preliminary Hazard Analysis (PHA), HIRARC form and interview session with several workers in the constructio. The main objective of this study is to support the idea to coordinate and redefined the practice of occupational safety and health as workers discipline at their workplace based on existing potential hazard. This study was conducted to identify the hazard that occur at the workplace and analyse the safety precaution taken by the workers and employer to avoid accidents. As a result, this study listed several suggestions to improve the practice of occupational safety and health among workers in the workplace

Perceptions of Local People toward Community Development and Forest Conservation in Bangladesh: The Case of Sal Forests

ArticleJournal of Forest Planning. 22(1): 29-38. (2017)journal articl

Treatment of Scoliosis by Hartshill Rectangle and Sublaminar Wiring

Background: Scoliosis is a complex three dimensional deformity characterized by coronal, sagittal and horizontal plane deviation. Treatment of scoliosis has made significant development in techniques and modalities of internal fixation. Objective: To see the efficacy of Hartshill rectangle and sublaminar wiring for correction of scoliotic deformity, clinical outcome and patients satisfaction. Methods: During the period of July 2008 to June 2011, 14 patients of scoliotic spinal deformities of various etiologies (Congenital-02, idiopathic-12) were operated. Age ranged from 11 to 23 years with mean 16.71 ± 03.22 years. Female 09 and male 05 patients were included where Hartshill rectangles with sublaminar wiring were used for every case. Results: At least 12 months (range 12-36 months) follow up regarding clinico-radiological evaluation and patients satisfaction were accounted as per the SRS-24 questionnaire. The mean scoliosis in the coronal plane (Cobbs angle) measured 53.50o ± 03.98o preoperatively reducing significantly to 21.14o ± 02.77o (p<0.05) and the mean preoperative sagittal plane angle 60.14o ± 07.30o reducing significantly to average 42.14o ± 05.28o (p<0.05) at 1 year as determined by paired t-test. No neurological complication was seen except transient hyperesthesia in 02 patients, superficial wound infection in 01 patient and 01 wire breakage. All the patients were happy to live with their present back status. Conclusion: Overall outcome in segmental spinal fixation with sublaminar wire and Hartshill rectangle is satisfactory and effective.DOI: http://dx.doi.org/10.3329/bsmmuj.v5i1.10981 BSMMU J 2012; 5(1):6-1