The second precise levelling network of Peninsular Malaysia

The measurement of Second Precise Levelling Network (PLN) for the Peninsular Malaysia which was completed in 2000 by Department of Surveying and Mapping Malaysia (DSMM) is set to replace the First Order Levelling Network of 1967. The new network consists of 113 levelling lines with more than 5000 bench marks and covers a total distance of over 5000 km. Precise levelling technique is used to establish the network where the allowable misclosure between fore and back levelling is less than 3 mm per root kilometre of length along a line. Its configuration is predominantly dictated by the land transportation pattern. The mean sea level (MSL) at Port Kelang, based upon a 10-year tidal observation (1984-93), was later being adopted as the new Peninsular Malaysia Geodetic Vertical Datum (PMGVD). A consistent and accurate set of adjusted heights of benchmarks has been achieved in the adjustment of the Precise Levelling Network of Peninsular Malaysia on the datum defined by MSL height at Port Klang. These adjusted heights are based on the Helmert orthometric height system. By fixing Port Kelang, the precision of the PLN can be expressed as 1.14 mmvkm. This implies that for any of the 5,295 first-order levelling bench mark across the nation, a height precision of better than 3 cm can be expected

Enhancement of height system for Malaysia using space technology: the study of the datum bias inconsistencies in Peninsular Malaysia

The algorithm for orthometric height transfer using GPS has been widely presented. Its practical limitations are mostly due to datum bias inconsistencies and lack of precise geoid. In most applications, datum biases are assumed to be systematic over short baselines and therefore could be eliminated by differential heighting techniques. In this study, optimal algorithms were investigated to model biases between local vertical datum in Peninsular Malaysia and the datums implied by by EGM96, OSU91A and the regional Gravimetric Geoid in South_East Asia. The study has indicated that local vertical datum is not physically parallel to the datums implied by the above geoids. The shift parameters between the datums implied by the GPS/leveling data, and the EGM96, OSU91A and the gravimetric datums are about – 41cm, -54 cm and – 8 cm respectively. Also the maximum tilts of the planes fitting the residual geoids above these datums relative to GPS/Leveling datum are of the order of 36, 51 and 33 centimeters per degree. It is therefore necessary to take into account the effect of inconsistent datum bias particularly for baseline height transfer. The level of accuracy achieved by the bias corrected relative orthometric height differences of the EGM96, OSU91A and the gravimetric geoid models combined with GPS/leveling data for baseline lengths up to 36 km, is sufficient to replace the conventional tedious, time consuming ordinary leveling technique for rapid height transfer for land surveying and engineering applications

Public Perception: Heritage Building Conservation in Kuala Lumpur

AbstractMalaysia had initiated the effort of conserving heritage buildings just approximately 30 to 40 years ago. The awareness is slowly increasing; though it is rather slow. Extra efforts on conserving these buildings can bring immense benefits to the country especially for future generation. However, whether those buildings are important to be conserved is always a question asked by many. Is Malaysian aware on the withstanding of those buildings at present, and is it important to them? This paper aims to review Malaysian public's perception on heritage buildings conservation besides identifying their physical accessibility to those buildings in Kuala Lumpur

Attribution styles as correlates of technical drawing task-persistence and technical college students’ performance

Technical drawing is a means of communicating between the designer and the manufacturers to bring ideas into reality by means of drafting. This study investigated attribution styles as collates of students’ technical drawing task-persistence and academic performance using correlational research design. The population for this study consisted of 864 students of year II and the sample study comprised of 150 (93 males and 57 females) randomly selected from six technical colleges in Edo State, Nigeria. Three instruments, Academic Performance Attribution Style Questionnaire (APASQ), Technical Drawing Taskpersistent Rating Scale (TDTPRS); and Technical Drawing Performance Test (TDPT) were developed and used for data collection. Cronbach Alpha reliability method was used to determine the reliability of the instruments and the results were obtained: SAASQ = .87; TDTPRS=.79; AND TDAT = .85. The findings of the study revealed that the technical drawing task-persistence of students was positively correlated by functional attribution style; and was negatively correlated by dysfunctional attribution style; functional attribution style positively correlated academic performance of students. Based on the findings of the study, it was recommended among others that technical drawing teachers should model and teach the students the right attribution style that will enhance their learning of technical drawing

Optimization of EDM Injection Flushing Type Control Parameters Using Grey Relational Analysis on AISI 304 Stainless Steel Workpiece

This paper deals with optimization of Electrical Discharge Machining (EDM) Injection flushing type control parameters on multi-performance optimization characteristics instead of single performance optimization using Grey Relational Analysis (GRA) Method. The experimental control parameters were being optimized according to their various machining characteristics namely material removal rate (MRR), electrode wear ratio (EWR) and surface roughness (SR) using copper as the tool and AISI 304 stainless steel as the workpiece. This parameters optimization was based on Taguchi’s orthogonal array (OA) combined with GRA. A grey relational grade (GRG) calculated based on GRA was used to optimize the EDM process with multiple performance characteristics and Taguchi’s L18 OA was used to plan the experiments. The machining parameters selected are polarity, pulse on duration, discharge current, discharge voltage, machining depth, machining diameter and dielectric liquid pressure. Results shown that machining performance was improved effectively using this approach. The predicted responses at optimum parameter levels are in good agreement with the results of confirmation experiments conducted for verification tests

Memperkasa warga Indonesia menerusi kurikulum pendidikan baru: kajian persepsi guru terhadap perlaksanaan Kurikulum 2013 di Aceh Jaya

Kemampuan pedagogi guru dapat mempengaruhi kemampuan pelajar dalam mengikuti proses pembelajaran dengan baik. Kurikulum 2013 bertujuan untuk mempersiapkan warga Indonesia agar mempunyai kemampuan hidup sebagai peribadi dan warga negara yang beriman, produktif, kreatif dan afektif serta mampu berkontribusi pada kehidupan bermasyarakat, berbangsa dan bernegara. Kajian ini bertujuan untuk mengenalpasti persepsi guru terhadap pelaksanaan Kurikulum 2013 pada Sekolah Menengah Kejuruan (SMK) di Aceh Jaya. Kajian ini merupakan kajian kuantitatif yang menggunakan instrumen soal selidik untuk mendapatkan persepsi 30 guru yang disampel secara rawak mudah berdasarkan faktor bahan kurikulum, kesediaan guru, kesediaan pelajar, kemudahan dan sokongan. Data dianalisis menggunakan Statistical Package for Social Science (SPSS) version 21.0 dan ditampilkan dalam peratusan dan min dan melibatkan skala Likert 4 mata. Hasil kajian mendapati guru-guru bersetuju bahawa faktor kesediaan guru (min= 2.81), faktor kesediaan pelajar (min= 3.79) dan faktor sokongan yang diterima (min= 2.66) telah menunjukkan persediaan bagi melaksanakan kurikulum 2013. Berkenaan kemampuan pelajar mengikut pembelajaran juga didapati perbezaan persepsi yang signifikan antara guru vokasional dengan guru bukan vokasional dengan nilai p= 0.04. Persepsi guru vokasional ialah pelajar dapat mengikuti dan memahami proses pembelajaran dengan baik sementara persepsi guru bukan vokasional pula adalah sebaliknya. Kajian lanjutan perlu dijalankan untuk mengenalpasti hubungan di antara kemampuan pedagogi guru dengan kesediaan pelajar

Pengaruh minat terhadap pembentukan pekerja berkemahiran di Malaysia: kajian kes pelatih Institut Latihan Perindustrian Kuala Lumpur (ILPKL)

Pendidikan vokasional adalah komponen penting dalam pembentukan sumber manusia di negara pesat membangun seperti Malaysia. Masalahnya pendidikan teknikal dan vokasional sering dianggap sebagai pendidikan kelas kedua dan ini melemahkan minat terhadap bidang ini dan dengan itu merendahkan bilangan enrolmen pelatih . Kajian ini menerokai fenomena pembentukan kemahiran dalam kalangan pelatih Institiut Latihan Perindustrian. Dengan menggunakan kaedah kualitatif Grounded Theory data primer didapati dari soalselidik mendalam 32 responden yang terdiri daripada pentadbir, pengajar, pelatih, majikan, dan rakan pelatih di Institut Latihan Perindustrian Kuala Lumpur (ILPKL) yang telah dipilih secara pensampelan bertujuan. Dapatan kajian menunjukkan bahawa tekad dan minat pelatih merupakan faktor utama dalam pembentukan pekerja berkemahiran tinggi. Pembentukan tekad ini dipengaruhi oleh pelbagai faktor seperti dorongan keluarga, pengajar dan pentadbir. Implikasi dapatan kajian ini mengukuhkan peranan tekad dan minat di dalam mentransformasi pendidikan teknikal dan vokasional di Malaysia

Carbon emission from vehicular source in selected industrial areas in Malaysia

Vehicle emission has been the major source of environmental pollution for the past 30 years. The urbanization, industrialization and traffic systems growth are causing more air pollution problem in the city creating an uncomfortable atmosphere to live in. Carbon emission is one of the main air pollutants causing problems in the local and global community. This paper discusses the effect of increasing vehicular traffic on the road in a few industrial sites within cities in Malaysia to the release of carbon dioxide and carbon monoxide in the atmosphere. This paper studies the traffic trend using census data from JKJR and converted into carbon emission using DEFRA GHG Conversion Factors and air quality trend from Alam Sekitar Malaysia in three selected industrial area in Malaysia, which are Shah Alam Industrial Area, Seremban-Senawang Industrial Area and Kuantan-Pekan Industrial Area. Carbon monoxide concentration trend in Shah Alam and Seremban-Senawang fluctuates with the highest concentration of 1.78ppm for Shah Alam and 0.77ppm in Seremban-Senawang in the earlier years and becoming lower in 2010 and 2011 compared to the trend in Kuantan-Pekan, which increased since 2001 to 2011 with the highest concentration of 0.54ppm. Carbon dioxide concentration is highest at Shah Alam ranging from 18067.17 to 88150.01 kg CO2 /km travelled compared to Kuantan-Pekan ranging from 3520.39 to 6953.69 kg CO2 /km travelled and Seremban-Senawang ranging from 3783.29 to 5734.30 kg CO2 /km travelled. Based on the early findings, the increasing vehicular traffic resulted in increment of carbon emission in the atmosphere

Prevalence of Enterobacteriaceae producing carbapenemase (OXA-48) responsible for urinary tract infections in Casablanca.

In recent years, we have witnessed the appearance of strains increasingly resistant to antibiotics. The large-scale spread of this resistance in the community today suggests that it will become a major public health problem shortly. Among the resistant strains are Enterobacteriaceae, which are responsible for numerous infections, particularly urinary tract infections. The present study focused on the phenotypic and genotypic characterization of uropathogenic enterobacteria isolated from the community environment. Our study included a total of 78 strains collected from UTIs during the year 2019. The confirmation of the species was performed by the Biomérieux VITEK system. The study of their antibiotic resistance was carried out by the method of diffusion on agar Mueller Hinton according to the recommendations of SFM-EUCAST 2019.The search for resistance genes bla(NDM, KPC, OXA-48) was performed by PCR. The results obtained showed that out of 78 samples of urinary enterobacteria, E.coli species dominated by a percentage of 58%, followed by K.pneumonia at 33%, and E.cloacae 8%. The study of antibiotic resistance profile showed high resistance to penicillins 91% followed by cephalosporins 58%. Carbapenems have a low activity on the studied strains with resistance percentages of 41% and 33% for imipenem and ertapenem respectively. The carbapenems resistance study allowed the detection of the blaOXA-48gene in three strains among the studied strains