INTI INTERNATIONAL
UNIVERSITY
LIST OF RESEARCH
PAPERS
·
FOBCAL FACULTY OF SCIENCE, TECHNOLOGY,
ENGINEERING AND MATHEMATICS - FOSTEM ______________________________________________________________________________________________________ Akel, M., Al-Hawat,
S., & Lee, S. (2010). “Pinch current and soft X-ray yield limitations by numerical
experiments on nitrogen plasma focus”. Journal of fusion energy, 29(1),
94-99. Akel, M., Al-Hawat,
S., Saw, S. H., & Lee, S.
(2010). Numerical experiments on oxygen soft X-ray emissions
from low energy plasma focus using Lee model. Journal of Fusion Energy,
29(3), 223-231. Ang, W. T., & Park, Y. S. (1996). “Stresses around a periodic
array of planar cracks in an anisotropic biomaterial”. International journal of engineering science, 34(13), 1457-1466. Carver,Andy,
Halpin,Terry. (2013). “Reference Scheme Reduction
on Subtypes in ORM.” OTM 2013
Workshop, LNCS 8186 : 457-466 Choong,Chieh Wean, Choong,S.M., Thong,Weng Hing.
(2013). “A defined culture medium suitable for sensitive Phalaenopsis species seedlings.” Biotechnology (Advance online publication),
Vol.12, Issue 3 : 163-167 Fat, L. T.,
Mahadi, W., & Soin,
N. (2009). “The
performance of tapered feed network and quarter-wavelength transformer feed
network at KU-Band”. In 2009 International Conference for Technical
Postgraduates (TECHPOS). Foong, K. C., Chee, C. T., & Wei, L. S. (2009). “Adaptive network fuzzy inference
system (ANFIS) handoff algorithm”. In Future Computer and Communication, 2009. ICFCC 2009. International
Conference on (pp. 195-198). IEEE. Fuller,
A., McFarlane, P., & Lam, K.
(2002). “Remote
collaborative teaching for computer Science”. Halpin,
T. (2009).”Predicate
Reference and Navigation in ORM”. In On the Move to Meaningful
Internet Systems: OTM 2009 Workshops (pp. 723-734). Springer Berlin
Heidelberg. Halpin,
T., & Wijbenga, J. P. (2010). “FORML 2”. In Enterprise, Business-Process
and Information Systems Modeling (pp. 247-260). Springer Berlin Heidelberg Halpin,
T. (2010). “Object-role
modeling: principles and benefits”. International Journal of
Information System Modeling and Design (IJISMD), 1(1), 33-57. Halpin,
T., Curland, M., Stirewalt, K., Viswanath, N., McGill, M., & Beck, S. (2010). Mapping ORM to datalog: An overview.
In On the Move to Meaningful Internet Systems: OTM 2010 Workshops (pp.
504-513). Springer Berlin Heidelberg. Halpin,
T. (2011). Structural
aspects of data modeling languages.
In Enterprise, Business-Process and Information Systems Modeling (pp.
428-442). Springer Berlin Heidelberg. Idrus, N. “Knowledge capacity building through quality
management of education and
institutions of higher
learning”. Nirwan Idrus PhDMonashIQALondon, 4(1),
111. Lee, J., Hong, N. L., & Ling,
N. L. (2001). “An analysis of
students' preparation for the virtual learning environment”.
The internet and higher education,
4(3), 231-242. Lee, S., & Saw, S. H. (2008). “Pinch current limitation effect in plasma focus”.
Applied Physics Letters, 92(2), 021503. Lee, S., Saw, S. H., Lee, P. C. K., Rawat, R.
S., & Schmidt, H. (2008). “Computing plasma focus pinch current from total current measurement.” Applied Physics Letters, 92(11),
111501-111501. Lee, S., Lee, P., Saw, S. H., & Rawat,
R. S. (2008). “Numerical experiments on plasma focus pinch current
limitation”. Plasma Physics and Controlled Fusion,50(6), 065012 Lee, S., & Saw, S. H. (2010). Numerical
experiments providing new insights into plasma focus fusion devices. Energies,
3(4), 711-737. Morgan,
T. (2010). A proposal for
folding in ORM diagrams.
In On the Move to Meaningful Internet Systems: OTM 2010 Workshops (pp.
474-483). Springer Berlin Heidelberg. Sannasi, P., Kader, J., Ismail, B. S., & Salmijah, S. (2006). “Sorption of Cr
(VI), Cu (II) and Pb (II) by growing and non- growing
cells of a bacterial consortium”. Bioresource technology, 97(5),
740-747. Sannasi, P., Kader, J., Othman, O., & Salmijah, S. (2006). “Single and Multi‐Metal
Removal by an Environmental Mixed Bacterial
Isolate”. Modern
Multidisciplinary Applied Microbiology:
Exploiting Microbes and Their Interactions, 136-141. Saw, S. H., Lee, S., Roy, F., Chong, P.
L., Vengadeswaran, V., Sidik,
A. S. M.,& Singh,
A.(2010). “In situ determination of the static inductance and resistance of a
plasma focus capacitor bank”. Review of
Scientific Instruments, 81(5), 053505. Soh, S. C., & Abdullah, M. P. (2007). “Determination of
volatile organic compounds pollution sources in Malaysian drinking
water using multivariate analysis”. Environmental monitoring and
assessment”, 124(1-3), 39-50. Srinivasan, M., & Praslad,
S. M. (2005). “Advanced thermoelectric energy recovery system in light
duty and heavy duty vehicles: Analysis on technical and marketing challenges”. In Power Electronics and Drives
Systems, 2005. PEDS
2005. International Conference on (Vol. 2, pp.977-982). IEEE. Subbarayan, S., & Ramanathan, S. K. (2009). “Effective
Watermarking of Digital Audio and Image Using Matlab
Technique”. In Machine Vision,
2009. ICMV'09. Second International Conference on (pp. 317-319). IEEE Suresh, G. R.,
Sudha, S., & Sukanesh,
R. (2009). “Performance
evaluation of shape adaptive discrete wavelet transform based magnetic
resonance images coding”. In
Future Computer and Communication, 2009. ICFCC 2009. International Conference
on (pp. 182- 186). IEEE. Wong,Ling
Shing,
Lee,Yook Heng, Surif,Salmijah. (2013). “Performance of
a cyanobacteria whole cell-based fluorescence biosensor for heavy metal and
pesticide detection.” Sensors,
Vol.13, Issue 5 : 6394 Wong,Ling
Shing,
Lee,Yook Heng, Surif,Salmijah. (2013). “Whole cell
biosensor using Anabaena torulosa with optical transduction for environmental
toxicity evaluation.” Journal of
Sensors, Vol.2013, Article ID 567272 Yee-Loong
Chong, A., & Ooi, K. B. (2008). “Adoption of interorganizational
system standards in supply chains: an
empirical analysis of RosettaNet standards”.
Industrial Management & Data Systems, 108(4), 529-547. Abstract Stresses around a periodic array of planar
cracks in an anisotropic biomaterial Ang, W.T.,
Park, Y.S. (1996) The
problem of calculating the stress distribution around a periodic array of
planar cracks in an anisotropic elastic half-space which adhere perfectly to
another anisotropic half-space is considered. It is formulated in terms of a
system of hypersingular integral equations with the
crack-opening displacements as unknown functions. For a specific case
involving transversely-isotropic materials, the integral equations are solved
numerically through the use of a collocation technique and numerical values
of useful quantities, such as the crack tip stress intensity factors, are
computed. Document type : Article Source type : Journal Sources
: Sciencedirect Link: http://www.sciencedirect.com/science/article/pii/0020722596000651 ______________________________________________________________________________________________________ A defined culture medium suitable for sensitive Phalaenopsis
species seedlings Choong,Chieh
Wean, Choong,S.M., Thong,Weng Hing. 2013 Half strength MS medium supplemented with peptone was found
to inhibit growth of considerable number of Phalaenopsis
species seedlings and this hamper conservation effort. It is therefore
important to design a reproducible defined medium that is not selective and
could support a wide range of genotypes. This could be achieved by adjusting
the macronutrient concentrations. A new defined medium was designed with
nitrate-nitrogen (NO3-N) to ammonium-nitrogen (NH4-N) ratio of 5 and N to S
ratio of 15, buffered with 800 mg dm-3 KH2PO4 andNPK
ratio of 2.0:0.8:3.1. Mean fresh weight, dry weight and root to shoot ratio
was compared with control medium. In contrary to control medium that stunted
growth of significant number of Phalaenopsis aphrodite, Phalaenopsis bellina and Phalaenopsis violacea seedlings, the new medium was found to
significantly support growth of the seedlings and improved root development.
In addition, the new medium was not selective against sensitive seedlings as
the data from new medium pass normality test while data from control medium
was skewed in P. bellina. This new medium is
recommended for maintaining genetic diversity in conservation programs by
improving seedling survival and growth in vitro. Source : Biotechnology Document type : Article Source type : Journal Keywords: Moth
orchid, germination, germinated seedlings, nitrate nutrition Link : http://docsdrive.com/pdfs/ansinet/biotech/0000/54975-54975.pdf ______________________________________________________________________________________________________ Wong,Ling
Shing,
Lee,Yook Heng, Surif,Salmijah. 2013 Whole cell biosensors always face the challenge of low stability of biological components and short storage life. This paper reports the effects of poly(2-hydroxyethyl methacrylate) (pHEMA) immobilization on a whole cell fluorescence biosensor for the detection of heavy metals (Cu, Pb, Cd), and pesticides (dichlorophenoxyacetic acid (2,4-D), and chlorpyrifos). The biosensor was produced by entrapping the cyanobacterium Anabaena torulosa on a cellulose membrane, followed by applying a layer of pHEMA, and attaching it to a well. The well was then fixed to an optical probe which was connected to a fluorescence spectrophotometer and an electronic reader. The optimization of the biosensor using several factors such as amount of HEMA and drying temperature were undertaken. The detection limits of biosensor without pHEMA for Cu, Cd, Pb, 2,4-D and chlorpyrifos were 1.195, 0.027, 0.0100, 0.025 and 0.025 μg/L respectively. The presence of pHEMA increased the limits of detection to 1.410, 0.250, 0.500, 0.235 and 0.117 μg/L respectively. pHEMA is known to enhance the reproducibility of the biosensor with average relative standard deviation (RSD) of ±1.76% for all the pollutants tested, 48% better than the biosensor without pHEMA (RSD = ±3.73%). In storability test with Cu 5 μg/L, the biosensor with pHEMA performed 11.5% better than the test without pHEMA on day-10 and 5.2% better on day-25. pHEMA is therefore a good candidate to be used in whole cell biosensors as it increases reproducibility and enhances biosensor storability. Source : SENSORS Document type : Article Source type : Journal Keywords: Biosensors;
Cyanobacteria; Bacterial cells; Fluorescence; Heavy metals; Pesticides –
Testing; Polymethacrylates Link : http://www.mdpi.com/1424-8220/13/5/6394/pdf ______________________________________________________________________________________________________ Reference Scheme Reduction
on Subtypes in ORM Carver,Andy,
Halpin,Terry. 2013 Object-Role Modeling (ORM) allows composite reference schemes for object types to be portrayed using either objectification (in the sense of situational nominalization) or coreference (as defined in ORM rather than linguistics). In practical modeling, cases can arise where a subtype of a compositely identified object type has a natural reference scheme that utilizes only some components of the supertype’s reference scheme. Using the supertype’s reference scheme to verbalize facts for the subtype then leads to redundancy or other irrelevance in the verbalization. Moreover, if such cases are input directly to the ORM’s standard relational mapping procedure (Rmap), this can lead to table schemes that are not fully normalized. The paper identifies ways in which such problems can arise, and proposes ways to avoid these problems, partly by extending earlier work on reference scheme reduction, role redirection, and disjunctive reference, illustrating the approach with some practical examples. Source : OTM 2013
WORKSHOPS Document type : Conference
paper Source type : Book
series Keywords: Object-role
modeling, Practical model, Relational mapping, Supertype;
Artificial intelligence Link : http://link.springer.com/chapter/10.1007/978-3-642-41033-8_59
______________________________________________________________________________________________________ Whole cell biosensor
using Anabaena torulosa
with optical transduction for environmental toxicity evaluation Wong,Ling
Shing,
Lee,Yook Heng, Surif,Salmijah. 2013 A whole cell-based biosensor using Anabaena torulosa for
the detection of heavy metals (Cu, Pb, and Cd), 2,4-dichlorophenoxyacetate (2,4-D), and chlorpyrifos
was constructed. The cyanobacteria were entrapped on a cellulose membrane
through filtration. Then, the membrane was dried and fixed into a cylindrical
well, which was designed to be attached to an optical probe. The probe was
connected to fluorescence spectrometer with optical fibre.
The presence of the toxicants was indicated by the change of fluorescence
emission, before and after the exposure. The linear detection ranges for Cu, Pb, and Cd were 2.5–10.0 µg/L, 0.5–5.0 µg/L,
and 0.5–10.0 µg/L, respectively, while 2,4-D
and chlorpyrifos shared similar linear ranges of
0.05–0.75 µg/L. The biosensor showed good sensitivity with the lowest limits
of detection (LLD) for Cu, Pb, Cd, 2,4-D and chlorpyrifos determined
at 1.195 µg/L, 0.100 µg/L, 0.027 µg/L, 0.025 µg/L,
and 0.025 µg/L, respectively. The overall reproducibility of the
biosensor ()
was <±6.35%. The biosensor had been tested with different combinations of
toxicants, with the results showing predominantly antagonistic responses. The
results confirmed that the biosensor constructed in this report is suitable
to be used in quantitative and qualitative detections of heavy metals and
pesticides. Source : Journal of Sensors Document type : Article Source type : Journal Keywords: Whole
cell; biosensor; heavy metals; environment toxicants Link : http://www.hindawi.com/journals/js/2013/567272/
An analysis of students' preparation for
the virtual learning environment, Lee, J., Hong, N.L., Ling, N.L. (2001) While improving quality, reducing costs, and increasing access
are the key issues being discussed by administrators and academics of higher
education, the advances in the information and communication technologies
(ICT) have been perceived as the solution to problems relating to these
issues. The literature on the uses of ICT in higher education has provided
much information describing the design and development of a technical framework
for supporting the virtual learning environment (e.g., Kostopoulos
[Internet Res.: Electron. Networking Appl. Policy 8 (1998) 257.]; Jafari [WebNet J. (1999).];
Chia et al. [Paper presented at the International Conference on the Emerging
Trends in Electronic Commerce 2000, Kuala Lumpur (2000).]). Many studies have
examined the designs of online courses (e.g., Human & Kilbourne
[J. Manage. Educ. 23 (1999).]; St. Pierre [WebNet
J. (1999, July–September).]; Chuang [Interact. Multimedia Electron. J. Comput.-Enhanced Learn. 1 (1999).]; Thompson &
McGrath [J. Asynchronous Learn. Networks 3 (1999).]; Leon & Parr [Am.
Stat. 54 (2000).]; Kaynama & Keesling [J. Mark. Educ. 22 (2000).]). Some studies have
compared students' learning experiences in online courses (e.g., Hiltz et al. [J. Asynchronous Learn. Networks 4 (2000).];
Wegner et al. [J. Asynchronous Learn. Networks 3 (1999).]; Ernest &
Federico [J. Asynchronous Learn. Networks 4 (2000).]; Fallah
& Ubell [ALN Mag. 4 (2000).]; Watters [J. Educ.
Bus. 75 (2000).]). The processes of collaboration and communication between
learners and teachers are increasingly computer-mediated, such as via the
Internet. From the learner's perspective, perhaps the most significant and
detrimental factors to the success of a virtual learning environment are
stress, association with technology use, and dissatisfaction towards the
technology itself. It is suggested, conceivably, that the success of any
virtual learning environment depends on the adequate skills and attitudes of
learners. This proposition is evidenced by the popularity of online course
delivery at postgraduate level when compared with undergraduate degree
courses; as it is commonly believed that postgraduate students are mature and
motivated to undertake self-study as required in most virtual learning
environments. The authors present a study with the purpose to access
preparation of learners. A questionnaire, comprised
of adoptions of several existing instruments (Teo
& Lim [Women Manage. Rev. 11 (1996).]; Stone & Arunachalam
[Issues Account. Educ. 11 (1996).]; Chau [J.
Manage. Inf. Syst. 13 (1996).]; Compeau & Higgings [MIS Q. 23 (1999).]; McMahon et al. [J. Comput. Assisted Learn. 15 (1999).]; Shaw & Peter [J.
Asynchronous Learn. Networks 4 (2000).]; Venkatesh
& Morris [MIS Q. 24 (2000).]), was administered to appraise experiences
with computers and attitudes toward computers of students enrolled in a
private college offering tertiary education in Malaysia. Awareness of
information available on the Internet, access to the Internet, age, perceived
effectiveness, and usefulness of ICT in study are suggested to be important
factors in determining learners' use of the Internet in a virtual learning
environment. The aim of this study is to identify factors that address the requirements
of learners to enable appropriate use of ICT in their learning. Source : Sciencedirect Document type : Article Source type : Journal Keywords : Virtual learning; Online education; Learner preparations;
Perceptions Link: http://www.sciencedirect.com/science/article/pii/S109675160100063X ______________________________________________________________________________________________________ Remote
collaborative teaching for computer science, Fuller, A., McFarlane, P., Lam, K. (2002) Like many
western universities, the University of Wollongong (Australia) is offering
degrees to an increasing number of offshore students. Their usual offshore
teaching model involves intensive delivery of course material. Disadvantages
of this model include the apparent secondary nature of the offshore
academic's role and its unsuitability for technical subjects. In this paper,
the authors discuss experiments using Internet technologies to overcome those
disadvantages Document type : Article Source type : Journal Keyword: Computer aided instruction, computer
science education, distance learning, teaching, remote collaborative
teaching. Link: http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1009&context=infopapers Advanced Thermoelectric Energy Recovery
System in Light Duty and Heavy Duty Vehicles: Analysis on Technical and
Marketing Challenges, Srinivasan, M.,
Praslad, S.M. 2005 Thermoelectric materials - materials that exploit a phenomenon
in which the application of heat to combination of certain metals induces an
electric current- are emerging as potentially important systems for
increasing fuel efficiency and decreasing emissions in future automotive
vehicles. The issue of thermoelectric efficiency for automotive application
is examined from the standpoint of what material figures of merit (FOMs)
enables solid-state devices to compete with conventional electricity
generator or vapor compression refrigerators. It is estimated that FOMs of
(ZT) equal to or greater than 8 is required. Some of the emerging new bulk
materials may eventually reach that level of performance. The goal is to use
that excess heat to create electricity that would support many of the
existing vehicle system and to deliver the sufficient power to be able to
replace mechanical system with electrical system. In this paper many of the
automotive marketing issues and technical challenges are taken for
discussion, like development of TE generator in light and heavy-duty
vehicles, what type TE material, what are all the optimum design parameters
like exhaust gas flow rate, its temperature, and suitable location in the
vehicle are discussed. Apart from above, how the same TE material can be used
in vehicular cooling/heating/climate control also discussed. Source: IEEE Document type: Article Source
type: Journal Link: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=1619829 Sorption of Cr(VI), Cu(II) and Pb(II) by growing and non-growing cells of a bacterial consortium, Sannasi, P., Kader, J., Ismail, B.S., Salmijah, S. 2005 This paper reports the sorption of three
metallic ions, namely Cr(VI), Cu(II) and Pb(II) in
aqueous solution by a consortium culture (CC) comprising an acclimatised mixed bacterial culture collected from point
and non-point sources. Metal sorption capability of growing and non-growing
cells at initial pH of between 3 and 8 in the 1–100 mg/L concentration range
were studied based on Qmax and Kf
values of the Langmuir and linearised Freundlich isotherm models, respectively. Maximal metal
loading was generally observed to be dependent on the initial pH. Growing cells displayed significant maximal loading (Qmax) for Pb(II) (238.09 mg/g) and Cu(II) (178.87 mg/g) at pH 6 and at
pH 7 for Cr(VI) (90.91 mg/g) compared to non-growing cells (p < 0.05). At
the pH range of 6–8, growing cells showed higher loading capacity compared to
non-growing cells i.e. 38–52% for Cr, 17–28% for Cu and 3–17% for Pb. At lower metal concentrations and at more acidic pH (3–4)
however, non-growing cells had higher metal loading capacity than growing
cells. The metal sorption capacity for both populations were as follows: Pb(II)
> Cu(II) > Cr(VI). Source :
Sciencedirect Document type: Article Source type : Journal Keywords : Bacterial consortium; Sorption; Metal
loading; Heavy metal Link: http://www.sciencedirect.com/science/article/pii/S0960852405002129 ______________________________________________________________________________________________________ Knowledge capacity building through
quality management of education and institutions of higher learning, Nirwan Idrus. 2006 The globalization of knowledge or information is
multidirectional. It only makes sense when the provider and recipient of the
knowledge or information are capable of both providing and receiving. The
fact currently is that this is not the case, especially when it involves
developing countries. While the expectations are that developing countries
should at least be able to receive, if not provide, the education
infrastructure is normally not present to allow that to happen. This paper
proposes an exploration into effective learning, a move away from current
pedagogical thinking and delivery and instilling innovative management of
institutions of higher learning, so that we could catch up with the rest of
the world and hence join them in globalizing knowledge and information. In
particular, this paper discusses the demise of rote learning in this
technological and globalised world and challenges
the Asian values concept of acceptance. In combating these educational
drawbacks, this paper advocates a fundamental change in the requirements of
teachers in the broadest sense of the word (i.e. including lecturers and
professors). At the same time this paper also discusses the need for a conducive environment to allow the above to occur. This
leads to a quality-based management of higher education institutions. This
requirement has become a given in many developed countries. Source: Seaair Document type : Article Source type : Journal Link: http://www.seaair.au.edu/journal/JIRSEA%20v4%20n1%202006%20Papers.pdf#page=111 Determination of volatile organic
compounds pollution sources in Malaysian drinking water using multivariate
analysis, Soh, S.-C.,
Abdullah, P. 2007 A field investigation was conducted at all water treatment
plants throughout 11 states and Federal Territory in Peninsular Malaysia. The
sampling points in this study include treatment plant operation, service
reservoir outlet and auxiliary outlet point at the water pipelines. Analysis
was performed by solid phase micro-extraction technique with a 100 μm polydimethylsiloxane fibre using gas chromatography with mass spectrometry
detection to analyse 54 volatile organic compounds
(VOCs) of different chemical families in drinking water. The concentration of
VOCs ranged from undetectable to 230.2 μg/l.
Among all of the VOCs species, chloroform has the highest concentration and
was detected in all drinking water samples. Average concentrations of total trihalomethanes (THMs) were almost similar among all
states which were in the range of 28.4--33.0 μg/l.
Apart from THMs, other abundant compounds detected were cis
and trans-1,2-dichloroethylene, trichloroethylene, 1,2-dibromoethane,
benzene, toluene, ethylbenzene, chlorobenzene,
1,4-dichlorobenzene and 1,2-dichloro - benzene. Principal component analysis
(PCA) with the aid of varimax rotation, and
parallel factor analysis (PARAFAC) method were used to statistically verify
the correlation between VOCs and the source of pollution. The multivariate
analysis pointed out that the maintenance of auxiliary pipelines in the
distribution systems is vital as it can become significant point source pollution
to Malaysian drinking water. Source: Springer.com Document type : Article Source type : Journal Keywords: Volatile organic compounds, Drinking
water, PCA, Parafac Link: http://link.springer.com/article/10.1007/s10661-006-9207-8#page-1 ______________________________________________________________________________________________________ Pinch current limitation effect in plasma
focus, Lee, S., Saw, S.H. 2008 The Lee model couples the electrical
circuit with plasma focusdynamics, thermodynamics,
and radiation. It is used to design and simulate experiments. A beam-target
mechanism is incorporated, resulting in realistic neutron yield scaling with
pinch current and increasing its versatility for investigating all
Mather-type machines. Recent runs indicate a previously unsuspected “pinch
current limitation” effect. The pinch current does not increase beyond a
certain value however low the static inductance is reduced to. The results
indicate that decreasing the present static inductance of the PF1000 machine
will neither increase the pinch current nor the neutron yield, contrary to
expectations. Source: Scitation.aip Document type : Article Source type : Journal Link: http://scitation.aip.org/content/aip/journal/apl/92/2/10.1063/1.2827579 ______________________________________________________________________________________________________ Single and Multi-Metal Removal by
an Environmental Mixed Bacterial Isolate, Sannasi, P., Kader, J., Othman, O., Salmijah, S. 2006 This paper reports the removal of metals from aqueous solution
containing Cd(II), Cr(VI), Cu(II), Ni(II) and Pb(II) by a consortia culture (CC) comprising of
environmental mixed bacterial culture. The metal removal capability of
growing (active) and non-growing (inactive) cell populations at initial total
metal concentrations of 100 mg/l in single and multi-metal systems were
examined by determining percentage metal removal and specific metal uptakes
(q0). The removal and uptake performance of consortia culture in the
multi-metal system was 23-58% lower compared to the single metal system (p
< 0.05). The efficiency of metal removal in the single metal systems were
in the order of : Pb > Cu > Ni > Cd >
Cr. Growing cells displayed higher metal removal and uptake capability
compared to non-growing cells for all metals tested except for Ni. For both
growing and non-growing populations, the order of metal removal was Pb > Cu > Ni > Cd > Cr. TEM studies showed
that metals were deposited both intracellularly and
extracellularly for the two cell populations. XRF
analysis confirmed the identities of the sorbed
metals. Source: Wiley.com Document type : Paper
report Source type : Book
series Keywords: bacteria, biomass, heavy metal, metal
removal, biosorption, bioaccumulation Link: http://onlinelibrary.wiley.com/doi/10.1002/9783527611904.ch24/summary ______________________________________________________________________________________________________ Computing plasma focus pinch current from
total current measurement, Lee,
S., Saw, S.H., Lee, P.C.K., Rawat, R.S., Schmidt, H. 2008 The total current Itotal
waveform in a plasma focus discharge is the most commonly measured quantity,
contrasting with the difficult measurement of Ipinch.
However, yield laws should be scaled to focus pinch current Ipinch rather than the peak Itotal.
This paper describes how Ipinch may be computed
from the Itotal trace by fitting a computed current
trace to the measured current trace using the Lee model. The method is
applied to an experiment in which both the Itotal
trace and the plasma sheath current trace were measured. The result shows
good agreement between the values of computed and measured Ipinch. Source: INTIMAL.edu Document type : Article Source type : Journal Link:http://www.intimal.edu.my/school/fas/UFLF/Papers/PP4Published%20APPLAB9211111501_1.pdf ______________________________________________________________________________________________________ Adoption
of interorganizational system standards in supply
chains: An empirical analysis of RosettaNet
standards, Alain, C.Y.L., Ooi,
K.-B. 2008 This study aims to empirically examine the factors that affect
the adoption of RosettaNet standards. The four
factors examined in this study are partners’ power, trust, products’
characteristics, and government influence. Source: Emeraldinsight Document type : Research
paper Source type : Book
series Keywords:
Standards, Data analysis, Electronic commerce, Malaysia Link: http://www.emeraldinsight.com/doi/pdfplus/10.1108/02635570810868371 Numerical experiments on plasma
focus pinch current limitation, Lee, S., Lee, P., Saw,
S.H., Rawat, R.S. 2008 Contrary to the general expectation that
performance of a plasma focus would progressively improve with progressive
reduction of its static inductance Lo, a recent paper suggests that there is
in fact an optimum Lo below which although the peak total current increases
progressively the pinch current and consequently the neutron yield of that
plasma focus would not increase, but instead decreases. This paper describes
the numerical experiments and results that led to this conclusion. Sources: IOPscience Document type : Research
paper Source type : Book
series Link: http://iopscience.iop.org/0741-3335/50/6/065012/pdf/0741-3335_50_6_065012.pdf ______________________________________________________________________________________________________ Adaptive
network fuzzy inference system (ANFIS) handoff algorithm Foong, K.C., Chee, C.T., Wei,
L.S. 2009 Mobility management in the heterogeneous environment demands different
design approach, especially in the handoff decision. This is to fulfill the
different requirements of different segments especially in the hybrid
satellite and terrestrial scenario. There are many works done to replace the
traditional handoff algorithm such as hysteresis and fuzzy logic based
handoff algorithm. The fuzzy handoff algorithm proposed by earlier work is
not optimized and required constant attention from the human experts. This
paper proposes a newer approach using adaptive network fuzzy inference system
(ANFIS) where the training element is incorporated into the existing fuzzy
handoff algorithm Source: IEEE Document type: Article Source type: Journal Keywords: Computer and
communication Link: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5189770 ______________________________________________________________________________________________________ Suresh, G.R., Sudha,
S., Sukanesh, R. 2009 Region based coding is an important feature in todaypsilas image coding techniques as it follows
different regions of the image will be encoded at different bit rates and
hence at different qualities rather than encoding the entire image with a
single quality constraints. This paper evaluates the features of using shape
adaptive wavelet transform for the region based coding of the brain magnetic
resonance images, in which the brain part will be encoded with more
importance than the background. Shape adaptive discrete wavelet transform
(SA-DWT) can transform the regions of interest and the background on the
images independently and the coefficients can be encoded by using the SPIHT
coding at different levels. This algorithm was compared with the existing
wavelet based coding techniques and a better PSNR was achieved for the same
bit rate by reconstructing the region of interest with high quality than the
background Source:
IEEE Document type:
Proceeding Source type:
Conference paper Keywords:
SPIHT, Computer and communication Link: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5189767 ______________________________________________________________________________________________________ The performance of
tapered feed network and quarter-wavelength transformer feed network at
KU-Band Fat, L.T., Mahadi, W.N.L., Soin, N. (2009) Abstract: This paper
presents the performance of 4??4 array tapered microstrip
feed network and quarter-wavelength transformer feed network at KU-Band. The
paper shows the comparison of S11 and VSWR parameters between two feed
networks at 15 GHz. ADS2008 simulation software was
used to present the useful results on both the networks at 15 GHz. Keywords: microwave spectraantenna feedsmicrostrip
antenna arraysfrequency 15 GHztapered
feed network Document type: Conference paper Sources type: Book series Sources: IEEE Link: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5412089 ______________________________________________________________________________________________________ Effective
watermarking of digital audio and image using matlab technique Subbarayan, S., Ramanathan, S.K.
(2009) Abstract: Watermarking is a
technique which allows an individual to add hidden copyright notices or other
verification messages to digital audio, video, or image signals and
documents. In our proposal, for Audio Watermarking, a Watermark is encrypted
using RSA Algorithm and is embedded on the audio file using LSB technique.
LSB technique is an old technique which is not very robust against attacks.
Here, in audio watermarking we have embedded the encrypted watermark on the
audio file, due to which removal of the watermark becomes least probable.
This would give the technique a very high robustness. In the retrieval, the
embedded watermark is retrieved and then decrypted. This method combines the
robustness of Transform domain and simplicity of spatial domain methods. For
image Watermarking, DWT technique is used. DWT technique is used in Image
watermarking. Here, we have embedded the watermark in the image as a
pseudo-noise sequence. This gives a remarkable security to the image file as
only if the exact watermark is known can the embedded watermark be removed
from the watermarked image. Keywords: Cryptography,
Data mining, Discrete wavelet transforms, Educational institutions Machine
vision, Pixel, Protection, Public key, Robustness, Watermarking Document type: Conference paper Sources type: Book series Sources: IEEE Link: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5381136 __________________________________________________________________________________________________________________ Predicate
reference and navigation in ORM Halpin,
T. (2009) Abstract: A conceptual
schema of an information system specifies the fact structures of interest as
well as related business rules that are either constraints or derivation
rules. The sole data structure used in fact-oriented modeling approaches is
the fact type, which may be understood as a set of typed predicates. In spite
of the central role played by predicates in fact-orientation, several issues
need to be resolved before their full potential can be fully realized. This
paper identifies a number of these issues relating to predicate reference and
navigation, and proposes some solutions. Specific issues addressed include
predicate disambiguation and formalization, role navigation, and automated
verbalization of predicate paths. While the discussion focuses largely on
Object-Role Modeling (ORM), many of the issues discussed are also relevant to
other fact-oriented approaches, such as Cognition enhanced Natural
Information Analysis Method (CogNIAM) and the
Semantics of Business Vocabulary and Business Rules approach (SBVR), as well
as attribute-based approaches like Entity Relationship modeling and the
Unified Modeling Language. Keywords: Electronics, Telecommunications, IT
& Software Document type: Article Sources type: Book series Sources: Springer.com Link: http://link.springer.com/chapter/10.1007/978-3-642-05290-3_88 ______________________________________________________________________________________________________ Halpin, T., Wijbenga,
J.P. (2010) Abstract: A conceptual schema
of an information system specifies the fact structures of interest as well as
the business rules that apply to the business domain being modeled. These
rules, which may be complex, are best validated with subject matter experts,
since they best understand the business domain. In practice, business domain
experts often lack expertise in the technical languages used by modelers to
capture or query the information model. Controlled natural languages offer a
potential solution to this problem, by allowing business experts to validate
models and queries expressed in language they understand, while still being
executable, with automated generation of implementation code. This paper
describes FORML 2, a controlled natural language based on ORM 2 (second
generation Object-Role Modeling), featuring rich expressive power,
intelligibility, and semantic stability. Design guidelines are discussed, as
well as a prototype implemented as an extension to the open source NORMA
(Natural ORM Architect) tool. Keywords: Finance, Business, Banking Document type: Conference
paper Sources type: Book series Sources: Springer.com Link: http://link.springer.com/chapter/10.1007/978-3-642-13051-9_21#page-1 ______________________________________________________________________________________________________ Object-role
modeling: Principles and benefits Halpin, T.
(2010) Abstract: Object-Role
Modeling (ORM) is an approach for modeling and querying information at the
conceptual level, and for transforming ORM models and queries to or from
other representations. Unlike attribute-based approaches such as
Entity-Relationship (ER) modeling and class modeling within the Unified
Modeling Language (UML), ORM is fact-oriented, where all facts and rules are
modeled in terms of natural sentences easily understood and validated by
nontechnical business users. ORM’s modeling procedure facilitates validation
by verbalization and population with concrete examples. ORM’s graphical
notation is far more expressive than that of ER diagrams or UML class
diagrams, and its attribute-free nature makes it more stable and adaptable to
changing business requirements. This article explains the fundamentals of
ORM, illustrates some of its advantages as a data modeling approach, and
outlines some recent research to extend ORM, with special attention to
mappings to deductive databases. Keywords: Information system Document type: Article Sources type: Journal Sources: Igi-global Link: http://www.igi-global.com/article/object-role-modeling/40952#article-list ______________________________________________________________________________________________________ Pinch
current and soft x-ray yield limitations by numerical experiments on nitrogen
plasma focus Akel, M.,
Al-Hawat, S.,
Lee, S. (2010) Abstract: The modified
version of the Lee model code RADPF5-15a is used to run numerical experiments
with nitrogen gas, for optimizing the nitrogen soft X-ray yield on PF-SY1.
The static inductance L 0 of the capacitor bank is progressively reduced to
assess the effect on pinch current I pinch. The experiments confirm the I
pinch, limitation effect in plasma focus, where there is an optimum L 0 below
which although the peak total current, I peak, continues to increase
progressively with progressively reduced inductance L 0, the I pinch and
consequently the soft X-ray yield, Ysxr, of that
plasma focus would not increase, but instead decreases. For the PF-SY1 with
capacitance of 25 μF, the optimum L 0 = 5 nH, at which I pinch = 254 kA, Ysxr
= 5 J; reducing L 0 further increases neither I pinch nor nitrogen Ysxr. The obtained results indicate that reducing the
present L 0 of the PF-SY1 device will increase the nitrogen soft X-ray yield. Keywords: Plasma focus SY1, Pinch current
limitation, Soft X-ray, Nitrogen gas, Lee model RADPF5.15a Document type: Article Sources type: Journal Sources: Springer.com Link: http://link.springer.com/article/10.1007/s10894-009-9238-6 __________________________________________________________________________________________________________________ Numerical
experiments providing new insights into plasma focus fusion devices Lee,
S., Saw, S.H. (2010) Abstract: Recent extensive
and systematic numerical experiments have uncovered new insights into plasma
focus fusion devices including the following: (1) a plasma current limitation
effect, as device static inductance is reduced towards very small values; (2)
scaling laws of neutron yield and soft x-ray yield as functions of storage
energies and currents; (3) a global scaling law for neutron yield as a
function of storage energy combining experimental and numerical data showing
that scaling deterioration has probably been interpreted as neutron
‘saturation’; and (4) a fundamental cause of neutron ‘saturation’. The
ground-breaking insights thus gained may completely change the directions of
plasma focus fusion research. Keywords: Plasma focus; numerical experiments; scaling laws; neutron saturation Document type: Article Sources type: Journal Sources: Energies Link: http://www.mdpi.com/1996-1073/3/4/711 __________________________________________________________________________________________________________________ In
situ determination of the static inductance and resistance of a plasma focus
capacitor bank Saw,
S.H., Lee, S., Roy, F.,
Chong, P.L., Vengadeswaran, V., Sidik,
A.S.M., Leong, Y.W., Singh, A.
(2010) Abstract: Keywords: Electric measurements, Inductance,
High pressure, Capacitors, Plasma focus Document type: Article Sources type: Journal Sources: scitation.aip Link: http://scitation.aip.org/content/aip/journal/rsi/81/5/10.1063/1.3429207 ______________________________________________________________________________________________________ Numerical
experiments on oxygen soft X-ray emissions from low energy plasma focus using
Lee model Akel,
M., Al-Hawat, Sh.,
Saw, S.H., Lee, S. (2010) Abstract: The X-ray emission
properties of oxygen plasmas are numerically investigated using corona plasma
equilibrium model. The Lee model is here modified to include oxygen in
addition to other gases. It is then applied to characterize the Rico Plasma
Focus (1 kJ), finding a
oxygen soft X-ray yield (Ysxr) of 0.04 mJ in its typical operation. Keeping the bank parameters
and operational voltage unchanged but systematically changing other
parameters, numerical experiments were performed finding the optimum
combination of pressure = 3 Torr,
anode length = 1.5 cm and anode
radius = 1.29 cm. The optimum Ysxr
was 43 mJ. Thus we expect to increase the
oxygen Ysxr of PF-1 kJ thousand-fold from its
present typical operation; without changing the capacitor bank, merely by
changing the electrode configuration and operating pressure. The modified
version of the Lee model code is also used to run numerical experiments with
oxygen gas, for optimizing the oxygen soft X-ray yield on the new plasma
focus device PF-SY2 (2.8 kJ). The static inductance L0 of the capacitor bank is
progressively reduced to assess the effect on pinch
current Ipinch. The experiments confirm
the Ipinch, limitation effect in plasma
focus, where there is an optimum L0 below which although the peak total
current, Ipeak, continues to increase
progressively with progressively reduced inductance L0, the Ipinch and
consequently the soft X-ray yield, Ysxr, of that
plasma focus would not increase, but instead decreases. The obtained results
indicate that reducing the present L0 of the PF-SY2 device will increase
the oxygen soft X-ray yield till the maximum value after that the Ysxr will decrease with Ipinch decreasing. Keywords: Low energy plasma focus, Soft
X-ray, Oxygen gas, Lee Model RADPF5.15 K Document type: Article Sources type: Journal Sources: springer.com Link: http://link.springer.com/article/10.1007/s10894-009-9262-6 ______________________________________________________________________________________________________ Mapping ORM to datalog: An overview Halpin, T., Curland, M., Stirewalt, K., Viswanath, N., McGill, M., Beck, S. (2010) Abstract: Optimization of
modern businesses is becoming increasingly dependent on business intelligence
and rule-based software to perform predictive analytics over massive data
sets and enforce complex business rules. This has led to a resurgence of
interest in datalog, because of its powerful
capability for processing complex rules, especially those involving
recursion, and the exploitation of novel data structures that provide
performance advantages over relational database systems. ORM 2 is a
conceptual approach for fact oriented modeling that provides a high level
graphical and textual syntax to facilitate validation of data models and
complex rules with nontechnical domain experts. DatalogLB
is an extended form of typed datalog that exploits
fact-oriented data structures to provide deep and highly performant
support for complex rules with guaranteed decidability. This paper provides
an overview of recent research and development efforts to extend the Natural
ORM Architect (NORMA) software tool to map ORM models to DatalogLB. Keywords: Computer Communication Networks,
Information Systems Applications (incl.Internet),
Software Engineering, Information Storage and Retrieval, Artificial
Intelligence (incl. Robotics), Programming Techniques Document type: Article Sources type: Book series Sources: Springer.com Link: http://link.springer.com/chapter/10.1007%2F978-3-642-16961-8_72 ______________________________________________________________________________________________________ A proposal for folding in ORM diagrams Morgan, T.
(2010) Abstract: Object Role
Modeling (ORM) can be used to produce conceptual models of any scale. Although
small examples are often used to illustrate specific points, it is equally
possible to produce large models covering extensive business domains. To help
users navigate around a large model, the ORM diagram is typically split over
several virtual pages. This gives a fairly coarse granularity and it is
difficult for users to change the page structure to meet some temporary
viewing need. This paper describes an alternative approach that allows
objects of lesser interest to be temporarily ’folded’ away and ’unfolded’
when required. The folding and unfolding can be dynamically controlled by the
user, but operates under the control of specific algorithms. Some possible
algorithms are discussed and illustrated with examples, and a number of
usability issues are raised. Keywords: Computer Communication Networks,
Information Systems Applications (incl.Internet),
Software Engineering, Information Storage and Retrieval, Artificial
Intelligence (incl. Robotics), Programming Techniques Document type: Article Sources type: Book series Sources: Springer.com Link: http://link.springer.com/chapter/10.1007/978-3-642-16961-8_69 ____________________________________________________________________________________________________ Structural aspects of data modeling
languages Halpin, T.
(2011) Abstract: A conceptual data
model for an information system specifies the fact structures of interest as
well as the constraints and derivation rules that apply to the business
domain being modeled. The languages for specifying these models may be
graphical or textual, and may be based upon approaches such as Entity
Relationship modeling, class diagramming in the Unified Modeling Language,
fact orientation (e.g. Object-Role Modeling), Semantic Web modeling (e.g. the
Web Ontology Language), or deductive databases (e.g. datalog).
Although sharing many aspects in common, these languages also differ in
fundamental ways which impact not only how, but which, aspects of a business
domain may be specified. This paper provides a logical analysis and critical
comparison of how such modeling languages deal with three main structural
aspects: the entity/value distinction; existential facts; and entity
reference schemes. The analysis has practical implications for modeling
within a specific language and for transforming between languages. Keywords: Finance, Business & Banking Document type: Article Sources type: Book series Sources: Springer.com Link: http://link.springer.com/chapter/10.1007/978-3-642-21759-3_31 |
Any inquiries, please email to masilah.mansor@newinti.edu.my
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