On-body antenna wit parasitic elements

An antenna with multi-elements that act together to form an array is required to increase the gain. One example is the well-known Yagi-Uda antenna. Such an antenna is widely used for television communication in which it operates at high frequency (HF), very high frequency (VHF) and ultra high frequency (UHF). It consists of a driven element and a number of parasitic radiators in which currents are induced by mutual coupling. Some applications consider the mutual coupling effect undesirable because it degrades the performance. However, in the parasiticaray it is central to the operation. The parasite elements are useful to increase the gain, create a directional beam and enhance the bandwidth impedance of the antenna

Social Entrepreneurship as the Savior of Food Security Issues Among the Elderly: a Proposal

Food security among senior citizen is a new phenomenon inthe caring of senior citizens. Apart from making foodaffordable with the required nutrients, sustainability of thesupply at affordable prices is of utmost importance. Relyingon government funds as in most care centers in Malaysia;and donations in providing food to enhance the better healthqualities is not sustainable. In a Laureate project involving aliving lab in the outskirts of Kuala Lumpur, we piloted acaring service to transform the well-being of the seniorcitizens. With the community assets available in the vicinityof the lab, we present a proposal on monetizing thecommunity assets available around the senior citizen\u27shome. Solving the food security problem will beapproached from the perspective of social entrepreneurshipwhere an initial proposal of a community based foodsecurity project is proposed, known as the Enterprise SocialPreneur Project. This paper will introduce the trends of theaging society in Malaysia and define food security in thecontext of social entrepreneurship. This will be followed bya description of the Laureate project at the Al-Fikrah LivingLab where the idea of food security started. The nextsection will discussed on the findings of the communityassets and finally propose a solution to ensure sustainabilityof the food security and caring services from among thesenior citizens

A Profile Analysis of Potential Investors in Ireit Waqf Investment Products

The objective of this study is to provide a profile analysis of potential investors in iREIT as an instrument for waqf asset development. By adopting a survey questionnaire approach, a total of 365 respondents participated in the survey, which assessed information pertaining to the understanding of iREIT as an investment instrument, level of acceptance towards the idea of its introduction in the context of waqf, the medium of promotion and collection that they most prefer, the suitable price, and the unique features that they agreed to have in this hybrid iREIT. The results suggest that majority of the respondents are interested to participate as investors rather than donors, indicating that greater amount of funds can be tapped from the issuance of the iREITs waqf if these preferences of the investors are given priority. Findings of this study would assist in the formulation of an innovative investment structure based on iREIT waqf that is both practical and appealing to the widest pool of investors, and further contribute towards the development of the waqf sector.     Keywords: Waqf, iREITs, investment, profiling, Islamic financ

Mathematical HOTS cultivation via online learning environment and 5E inquiry model: cognitive impact and the learning activities

An ideal education is the one that enhance cognitive ability. In Malaysia, educators are currently putting enormous effort to uplift higher order thinking skills (HOTS) among students at various educational levels. The advancement of technology enables educators to apply online learning environment to further catalyze the effort. Integration of correct pedagogy is essential, 5E inquiry model by Bybee was implemented to 5E online learning environment-a learning environment developed for this research. The purpose of this research is to enhance HOTS among the samples. Thus, the cognitive impact of the learning environment was studied. The current gap of the learning activities that improve HOTS was addressed by probing into the activities done by samples. Samples are thirty-three secondary school students and had treatment with the learning environment for 4 weeks. T-test conducted found that samples' HOTS statistically significant higher after treatment compared to prior to the treatment, t (32) =-20.95, p < 0.05 that indicates the treatment improve samples' HOTS. The learning activities that materialize HOTS improvement is engaging learning module and HOTS related video. This research proves that human HOTS ability can be nurtured by using technology enhanced learning environment with the appropriate pedagogical approach. Deeper fundamental research regarding the process of learning that nurture HOTS is highly recommended in the future-one of the authors is currently working on

Environmental Factors and Students\u27 Learning Approaches: a Survey on Malaysian Polytechnics Students

Several studies have shown the impact of environmental factors on student learning approaches. Despite the importance of such studies, studies on technical learners are few. Thus, this study aimed to determine the influence of learning environment on Polytechnics students\u27 learning approaches in Malaysia. Learning environment plays an important role in the cognitive, effective and social domains of students because it could improve students\u27 learning outcomes. Learning approaches refer to the ways students deal with academic tasks that are related to learning outcomes. This study used Course Experience Questionnaire (CEQ) and Revised Two-Factor Study Process Questionnaire (RSPQ-2F) to collect the research data. Data were analyzed using AMOS Version 18. Multiple regressions were conducted to predict learning environment factors that influenced the level of students\u27 learning approaches. The result shows that effective teaching is a major factor that influences students\u27 deep approach followed by the assessment, learning resources and clear objectives

Towards 3D smart campus via 3D city modelling

The smart city concept may aid in improving the city management, enhance the efficiency and thus increase the effectiveness of the city, where it is mainly focused on both information and technologies. This concept appears to be applicable for a smaller area such as university campus. Based on this idea, this research tries to implement the 3D smart campus for Universiti Teknologi Malaysia (UTM). This is an initial research towards a real implementation of 3D smart campus and conceivably 3D smart cities. This research focuses on the development of UTM smart campus by using 3D city modelling. The QGIS software was used to develop the 3D models. Then, the 3D model is viewed in a web browser for better 3D visualization and navigation. Furthermore, the results show that the 3D developed models for UTM smart campus can be a reliable platform to manage the spatial query and viewing the attributes of UTM campus buildings and facilities. This can be seen beneficial to the physical future development of the UTM campus area

Ultra wideband printed monopole antenna with dual-band circular polarization

An ultra wideband printed monopole antenna with dual band circular polarization for wireless application is presented. The antenna dimensions are 30 × 30 × 1.6 mm3. The proposed antenna is able to cover frequency range between 2.65 GHz and 11 GHz with impedance bandwidth is around 122%. With the use of I-shape slit in the radiation element and the T-slot in the ground plane, the ultra wideband and circular polarization are excited. In addition, the rectangular slit is added in the ground plane, to enhance the impedance- and Axial Ratio - bandwidth. Furthermore, the dual band circular polarization with right hand circular polarization at 3.1 GHz and the left hand circular polarization at 7 GHz are obtained. Also, the 3-dB axial ratio bandwidths are about 242 and 246 MHZ at the lower and upper band without rectangular slit and 356 and 546 MHZ at the lower and upper band with rectangular slit, respectively

Classification of Cornel Arcus using Texture Features with Bayesian Regulation Back Propagation

The corneal arcus (CA) is an eye problem frequently faced by some group of people. The CA signs indicate the presence of abnormal lipid in blood and can cause  several problems such as  blood pressure, diabetes, and hyperlipidemia. This paper presents a comparison of classification of the abnormal eye using a neural network. In order to extract the image features,  the gray level co-occurrence matrix (GLCM)was used. This matrix measures the texture of the image, where the statistical calculation can be used to present the image features. The Bayesian Regulation (BR) algorithm has been proposed, in which this classifier classifies the obtained results better than previous works by other researchers. In this experiment, two classes data-set of the eye image, normal and abnormal images CA are used. The results from this BR classifier demonstrate a sensitivity of 96.1 % and a specificity of 98.6 %. The overall accuracy of this proposed system is 97.6 %. Although this classifier does not obtain 100 % accuracy, however its result is  proven to be able to classify the CA images successfully

Effect of organic and inorganic fertilizer on the growth and yield components of traditional and improved rice (Oryza sativa L.) genotypes in Malaysia

Rice is the most important staple cereal human nutrition and consumed by 75% of the global population. Rice plants need a supply of essential nutrients for their optimal growth. Rice production has increased tremendously in Malaysia insensitive irrigation and the use of inorganic fertilizers and pesticides. However, the effect of using inorganic fertilizers resulted in contamination of ground water and decreased the productivity of soil, which in turn affected the rice production in the long term. The use of organic manure may help to regain the soil health, but that is insufficient for providing the essential nutrients to achieve optimal growth. Therefore, the use of organic manure combined with inorganic fertilizers is applied to obtain optimum yields. This study aims to test the effect of organic and inorganic fertilizers on the growth and yield components of 65 rice genotypes. The pot experiment was conducted at the net house on field 10, University Putra Malaysia, UPM, Malaysia, during the period of February to June 2019 and August to December 2019 in a randomized complete block design (RCBD) with three replications. There were three treatment combinations viz. T1: 5 t ha−1 chicken manure (CM), T2: 2.5 t ha−1 CM + 50% CFRR, T3: 100% (150 N: 60 P2O5: 60 K2O kg ha−1) and chemical fertilizer recommended rate (CFRR). Grain and straw samples were collected for chemical analysis, and physical parameters were measured at the harvest stage. Results showed that most of the growth and yield components were significantly influenced due to the application of organic manure with chemical fertilizer. The application of chemical fertilizer alone or in combination with organic manure resulted in a significant increase in growth, yield component traits, and nutrient content (N, P, and K) of all rice genotypes. Treatment of 2.5 t ha−1 CM + 50% CFRR as well as 100% CFRR showed a better performance than the other treatments. It was observed that the yield of rice genotypes can be increased substantially with the judicious application of organic manure with chemical fertilizer. The benefits of the mixed fertilization (organic + inorganic) were not only the crop yields but also the promotion of soil health, the reduction of chemical fertilizer input, etc

Asymmetric patch element reflectarray with dual linear and dual circular polarization

A reflectarray antenna consisting of asymmetrical patch elements is proposed, which is capable of producing dual linear and dual circular polarized operation at 26 GHz frequency. The main purpose of this design is to support four different polarizations using the same patch element. The proposed reflectarray has a single layer configuration with a linearly polarized feed and circular ring slots in the ground plane. Asymmetric patch element is designed from a square patch element by tilting its one vertical side to some optimized inclination. A wide reflection phase range of 600° is obtained with the asymmetric patch element during unit cell measurements. A 332 element circular aperture reflectarray is designed with the proposed configuration and experimentally validated with a linearly polarized prime feed configuration. Two different orientations of mirror and non-mirror asymmetric patch elements on the surface of reflectarray are analyzed. Dual linear polarization is obtained with the mirror orientation of the asymmetric patch elements on the surface of reflectarray. Alternatively, asymmetric patch elements without mirror orientation are demonstrated to produce dual circular polarization with the same linearly polarized feed. A maximum measured gain of 24.4 dB and 26.1 dB is achieved for dual linear and dual circular polarization, respectively. Their respective measured efficiencies are 28% and 41.3%, which are supported by a maximum −3 dB gain bandwidth of 13.8% and 11.5%. The circular polarization operation of the reflectarray is also supported by a 6 dB axial ratio bandwidth of 9.2%. The proposed asymmetric patch reflectarray antenna with polarization diversity, wide bandwidth and high gain is suitable to be used in many high frequency applications of 5G communication