9 research outputs found
The relationship between price volatility, maturity and volume of trade of the Malaysian bond market
Kajian ini cuba membuat eksplorasi ke atas kesan tempoh matang dan volum dagangan ke atas kemeruapan pasaran bon Malaysia. Bon MGS, Cagamas clan Korporat yang aktif didagangkan merupakan data yang digunakan di dalam kajian ini. Perhubungan di antara pembolehubah-pembolehubah ini seterusnya dicerap dengan menggunakan analisa regresi. Tempoh kajian ini dibahagikan kepada tiga tempoh iaitu tempoh krisis (Mac 1996-Jun I997), tempoh semasa krisis sebelum pegging (Julai 1997-Ogos 1998) dan tempoh krisis selepas pegging (September 1998-Mac 1999). Adalah didapati bahawa tidak wujud perhubungan di antara kemeruapan harga dan tempoh matang bagi bon MGS dan Cagamas tetapi bagi bon Korporat, perhubungan di antara pemboleh ubah tersebut adalah positif dalam semua tempoh masa. Keputusan kajian juga menunjukkan bagi bon Korporat apabila volum dagangan dimasukkan ke dalam persamaan regresi, perhubungan di antara tempoh matang dan kemeruapan harganya menjadi tidak signifikan kecuali bagi tempoh semasa krisis sebelum pegging
Hubungan kelikatan minyak enjin terhadap usia guna serta suhu
Kelikatan minyak enjin bergred tunggal mengalami perubahan apabila berlakunya perubahan pada suhu dan tekanan. Namun begitu, secara realiti kelikatan minyak enjin juga mengalami perubahan terhadap usia guna. Oleh itu, kajian ini memperkenalkan satu hubungan kelikatan minyak enjin terhadap perubahan suhu serta usia guna. Hubungan ini berasaskan kepada persamaan matematik empirik yang melibatkan teori pelincir Newtonan dan bukan Newtonan. Hubungan yang baru ini dikenali sebagai model kelikatan matematik (ηmath). Dalam model ini, kelikatan minyak enjin dipengaruh oleh dua faktor iaitu faktor suhu (ks) dan faktor masa (km). Nilai kedua-dua faktor ini bergantung kepada formula bahan tambah minyak enjin tersebut. Analisis reologi meter likat telah digunakan untuk mendapatkan nilai kedua-dua faktor ini. Hasil kajian menunjukkan kelikatan minyak enjin mengalami penurunan apabila usia guna meningkat. Ini dibuktikan melalui model kelikatan matematik (ηmath) dan juga analisis reologi meter likat
Assessment engine oil using UKM acoustic emission energy viscosity model(ηEAEUKM).
Estimation the diesel engine oil viscosity in an engine
operation is very important since it affects the engine
performance. One of the most promising engine oil viscosity
monitoring methods is based on the analysis of acoustic emission(AE) signals, which is an extremely powerful technique that canbe deployed in a wide range of application of non-destructive testing. This technique is already used for monitoring the behavior of the sliding activities almost in all bearing operations especially wear. But in this study, the AE signals were applied for
monitoring and estimate diesel engine oil viscosity by using new equation which is known as UKM acoustic emission energy viscosity model (ηEAEUKM). The AE signals generated in the piston sliding zone on engine oil surface and it’s very sensitive for correlation with engine oil viscosity. Using MATLAB, the AE signals could be translated into AE energy. By using UKM acoustic emission energy viscosity model (ηEAEUKM) newly introduced, viscosity value will be accessible of AE energy. This study was carried out with a single cylinder 4 strokes diesel engine. That engine oil also undergoes oil analysis to seek the real viscosity value as study comparison. Analysis showed that the
UKM acoustic emission energy viscosity model (ηEAEUKM) is
applicable for estimation diesel engine oil viscosity
Factors Influencing Students’ Academic Aspirations in Higher Institution: A Conceptual Analysis
AbstractHigher education is critical success of young adults. Higher education can provide a gateway for social mobility and play a critical role in countering social stratification in Malaysia, particularly for the Bumiputera students in Malaysia society. However, change hurts. The transition from school to university is a change that every school students have to face in their quest for higher education. The current scenario giving some signals that there is a challenging life transition in the development of young adults, and many students are inadequately prepared for the psychological, emotional, and academic realities of higher education. These new university students are confronted with the adaptational challenges of living apart from family and friends, adjusting to the academic regimen, assuming responsibility for the tasks of daily living, and developing a new array of social relationships with peers and faculty. Futhermore, not many research have been conducted on this issue except that focused had been made to the secondary and/or high school students only. Therefore, this paper takes the challenge of filling these gaps by analysing some crucial conceptual undertanding what factors exactly influence the student's life at the higher institution
Recent development of graphene oxide-based membranes for oil–water separation: A review
Separation of oil in water emulsion remains as a critical issue due to the high volume of oily wastewater discharged by industrial processes. Membrane technology has a great industrial interest for this oil–water separation owing to its simple operational process and high separation efficiency. However, the hydrophobicity properties of membrane can aid the membrane fouling phenomenon and shorten the life of membranes. As a result, modification of membranes, particularly on hydrophilicity enhancement, is required to optimise the membrane performances. Over the years, graphene and its derivatives, particularly graphene oxide (GO) have gained great research interest in the field of membrane for water and wastewater treatment due to its ultimate thinness and unique layered structure. These features enhance the permeation fluxes, increase hydrophilic property, improve physicochemical properties and provides rich oxygen-containing groups for further modification, making it excellent for ionic/molecular separation. This review article discusses the recent progress of GO-based membranes through various configurations, i.e., free-standing, supported, and polymer nanocomposite for oil–water separation. The advancements of using GO for membrane morphology alteration, fouling mitigations as well as mechanical strength are discussed. The key issues for the development of high-performance GO membranes and prospects for imminent research are highlighted
Safe operating procedure for administration of Intravenous (bolus) medications
This guideline will be useful for nurses in the clinical field who need to perform and master in this procedure especially for the privileging process. It not only protects patient and the health facility by lowering the risk of medical errors that may be caused by incompetent healthcare providers but also enhances the reputation and credibility of the health facility and the health care communit