930 research outputs found
The use of cement leftovers from the hollow of spun piles as an additive in self-compacting concrete
Spun piles have been used widely by developing countries, including Malaysia, to construct the foundation of most construction projects. A spun pile is a reinforced precast and prestressed concrete that is compacted in a mould through spinning compaction. The spinning compaction produces cement leftovers in the hollow part of spun piles that can be added to concrete mixtures as an additive. The cement leftovers of spun piles were used as an additive in cement in range of 0%, 10%, 20% and 30% (equal percentages). The resulting compressive strength after curing periods of 7 days and 28 days were presented to investigate the properties of self-compacting concrete containing cement leftovers from the spun piles. Other properties investigated include the physical properties of fresh concrete and water absorption. The results indicated that higher compressive strength and lower water absorption were achieved by the concrete samples containing cement leftovers compared to controlled concrete
Employability skills for hospitality students in Malaysia
Malaysia needs high skilled workforce to support growth of the industry. With dynamically changing job market and progressive technological change, employees are expected to keep abreast of global economics. In the process of achieving the status of developed nation by the year 2020, Malaysia needs to restructure its workforce to ensure that middle level workers are highly skilled. Current job environment demands multi-task and skills. Thus, university graduates must be prepared to meet the demand especially in the hospitality industry. The purpose of this study is to identify the level of employability skills in the hospitality field. This research applied quantitative methodology. The respondents consist of final year students in bakery and culinary programme. Stratified sampling was used to select students in hospitality programs from 22 vocational colleges in Malaysia. Questionnaires were distributed to 841 students in five regions which are Central, South, North, East and East Malaysia (Sarawak) in Malaysia. Descriptive analysis was used to analyse the quantitative data. The results showed that the level of hospitality employability skills among vocational students in Malaysia were at high level of competence (93.2%). The research has brought meaningful implications for hospitality vocational students, employers and policy makers
Exploring classification for sentiment analysis from halal based tweets
Globally, social media is gaining popularity and
redefining how people interact with one another online.
Malaysian individuals, for example, are increasingly reliant on
social media platforms such as Facebook and Twitter as well as
LinkedIn, Pinterest, Instagram, and other similar sites.
Consider sentiment analysis to be a sub-category of social
listening. A social media sentiment analysis has uncovered the
public's current feelings on a particular topic or brand.
Sentiment analysis is a technique for characterizing and
capturing emotional states from unstructured text. The most
important part of sentiment analysis is to evaluate a body of
text to comprehend the opinion expressed by it. It usually
assigns a polarity of “positive”, “negative” or “neutral”. It uses
an algorithmic technique to capture people's thoughts,
sentiments, and emotions by incorporating Natural Language
Processing and Machine Learning technology. Sentiment
analysis in Malaysia's social media is challenging to perform
since posts are frequently written in a mixed language, usage of
English and Malay with embedded jargon and various district
dialect. The classification was performed based on Malaysia
halal certification scheme for each tweet to acquire the class
label's frequency value based on the sentiment analysis
process's polarity results. It will demonstrate social media
users' proclivity for posting and can act as a reference point for
users when making decisions. An analysis of amounted 500
tweets with the hashtag #sijilhalal elicited information
regarding people's feelings, preconceptions, and attitudes
toward various issues related to halal certification in Malaysia.
The discovery of a person's emotions concerning halal topics is
visualized. Muslims' views are of importance to #sijilhalal
awareness
Simulation analysis of ultrasonic testing in steel-based butt weld joint
Within this study, a simulation analysis based on Ultrasonic Testing (UT)
is made using Comsol Multiphysics. Comsol Multiphysics is a software that can
simplify many aspects of building UT method and also can be used to obtain a fast
understanding of the results of altering the fundamental parameters. The software
program has useful features which can help in technique development especially for
UT inspectors in Non- destructive Testing (NDT) field. The focus of this study is to
conduct a simulation analysis of internal weld defects by developing the model of
defects in a weld structure sample configured using the software. The model is
developed based on actual parameters and characterization of weld structure sample
and internal weld defects. The results of analysis show that each type of defects which
are incomplete penetration, slag inclusion and lack of fusion have different signal
pattern and signal amplitude which are depended on the characterizations of those
defects themselves
Pembangunan portal pendidikan teknik dan vokasional: satu kajian awal di kalangan Pelajar Sarjana PTV Jabatan Pendidikan Teknik dan Vokasional Fakulti Teknologi Kejuruteraan
Tujuan kajian ini adalah untuk mengkaji sejauh manakah keperJuan pelajar
terhadap portal Pendidikan Teknik dan Vokasional (PTV). Sebuah portal PTV
dibangunkan dalam kajian berasaskan produk ini. Sampel bagi kajian ini terdiri
daripada pelajar sarjana pendidikan teknik dan vokasional, semester 3. Dapatan kajian
ini dianalisis dengan menggunakan perisian SPSS versi 10. Pada peringkat awal projek
ini, keperluan pelajar terhadap portal PTV dikenal pasti. Selepas itu, ciri-ciri yang perlu
dibangunkan dalam portal PTV dikenal pasti dengan menggunakan kaedah borang soal
selidik. Satu portal PTV dibangunkan berdasarkan dapatan kajian tersebut. Pada
peringkat akhir projek ini, penilaian dilakukan ke atas portal PTV yang telah
dibangunkan. Tujuan penilaian ini adalah untuk mengenal pasti sejauh manakah portal
PTV ini memenuhi keperluan pelajar. Daripada dapatan kajian didapati portal PTV
amat diperlukan oleh pelajar. Selain daripada itu, daripada dapatan kajian, portal PTV
yang telah dibangunkan ini beryaya memenuhi keperluan pelajar. Cadangan untuk
memperbaiki portal PTV yang telah dibangunkan ini diberi oleh responden. Kajian
lanjutan patut dilakukan ke atas portal PTV yang telah dibangunkan bagi memperbaiki
serta memumikan konsep reka bentuk dan pengurusan maklumat
Overview of permanent-magnet brushless drives for electric and hybrid electric vehicles
With ever-increasing concerns on our environment, there is a fast growing interest in electric vehicles (EVs) and hybrid EVs (HEVs) from automakers, governments, and customers. As electric drives are the core of both EVs and HEVs, it is a pressing need for researchers to develop advanced electric-drive systems. In this paper, an overview of permanent-magnet (PM) brushless (BL) drives for EVs and HEVs is presented, with emphasis on machine topologies, drive operations, and control strategies. Then, three major research directions of the PM BL drive systems are elaborated, namely, the magnetic-geared outer-rotor PM BL drive system, the PM BL integrated starter-generator system, and the PM BL electric variable-transmission system. © 2008 IEEE.published_or_final_versio
SRM drives for electric traction
"GAECE" -- PortadaDescripció del recurs: 11 maig 2020GAECE (Grup d’accionaments elèctrics amb commutació electrònica). The group of electronically commutated electrical drives is a research team of Universitat Politècnica de Catalunya (UPC BARCELONATECH), which conducts investigation in four areas: electrical drives, power electronics, mechanics and energy and sustainability. Regarding electrical drives, research focuses on the development of new reluctance, permanent magnet and hybrid electrical drives. The main goal of those electrical drives is the integration of the power converter/controller and the mechanical transmission, being specially intended for the traction of light electric vehicles. That research is carried out by using the analysis of finite elements, taking into account eco-design criteria, considering new materials and new control strategies.First editio
Permanent Magnet Vernier Machine: A Review
Permanent magnet vernier machines (PMVMs) gained a lot of interest over the past couple of decades. This is mainly due to their high torque density enabled by the magnetic gearing effect. This study will provide a thorough review of recent advances in PMVMs. This review will cover the principle of operation and nature of magnetic gearing in PMVMs, and a better understanding of novel PMVM topologies using different winding configuration as well as different modulation poles and rotor structures. Detailed discussions on the choice of gear ratio, slot-pole combinations, design optimisation and role of advanced materials in PMVMs will be presented. This will provide an update on the current state-of-the art as well as future areas of research. Furthermore, the power factor issue, fault tolerance as well as cost reduction will be discussed highlighting the gap between the current state-of-the art and what is needed in practical applications
Comparative evaluation QoS of FTP over LEO and GEO Satellite Networks with diffserv architecture
This paper presents studies of the end-to-end QoS of IP over integrated terrestrial and NGSN (next generation satellite
network) for file transfer service using FTP. The authors compare between LEO and GEO satellites constellations for the QoS
parameters (i.e., delay, jitter, loss rate and throughput) of file transfer between one server in London and a client in Boston. The
authors model the file transfer with multiple connections and file size variation according to exponential and Pareto distributions
respectively. The authors create the scenario with error model to simulate transmission loss environment using the NS-2 simulation
software. A Diffserv (differentiated services) queue interface is placed in the server side to regulate the traffic flows across the
narrow bandwidth of the satellite links. The authors compare the empirical TCP throughput traces with analytical model for
validation. The results showed the performance evaluation and presented a good comparison of the QoS parameters involved in the
data transfer across LEO and GEO satellites systems
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