Displaying publications 141 - 160 of 2097 in total

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  1. Fulltext Informed consent in clinical trials with reference to information disclosure to patient-subjects
    Yuhanif Yusof, Anisah Che Ngah, Zaki Morad Mohamad Zaher
    Int J Public Health Res, 2014;4(1):384-390.
    MyJurnal
    Introduction The aim of this study was to examine the aspect of information disclosure by doctor-investigator during the process of obtaining informed consent in clinical trials.
    Methods This research employed a mixed-method data collection that is library research and interview. A qualitative methodology and analysis were used in an open-ended, face-to-face interviews with 17 patient-subjects. The interview questions were based on information that needed to be disclosed to patient-subjects during the process of obtaining informed consent. Each interview took place in Kajang Hospital and National Heart Institute and lasted 25-30 minutes. Interviews were conducted in Bahasa Melayu and English. The interviews were tape-recorded, and the main points from the interviews were jotted down to ensure that all information was adequately gathered. Interviewed occurred in Kajang Hospital and National Heart Institute. The participants were patients who had been referred to the Kajang Hospital and National Heart Institute. They were recruited (8 from Kajang Hospital and 9 from National Heart Institute) by their own doctors to participate in a study to evaluate the safety and effectiveness of the investigational stent after been diagnosed with coronary artery disease and also in a study to investigate drug for antidepressant. respectively.
    Results The study revealed that doctor-investigators fail to disclose full information to patient-subjects. Instead, doctor-investigators only disclosed information which they thought were necessary for the patient-subjects to know. The study also showed that there were doctor-investigators who did not disclose information at all to the patient-subjects.
    Conclusions This study implies that the aspect of information disclosure in the process of obtaining informed consent in clinical trials is rather poor and did not fulfill the criterion of good medical practice. A random monitoring task to be conducted by the research ethics commitees during the informed consent process is suggested.
    Matched MeSH terms: Research; Research Personnel; Ethics, Research
  2. Fulltext Focus group discussion: a tool for health and medical research
    Wong LP
    Singapore Med J, 2008 Mar;49(3):256-60; quiz 261.
    PMID: 18363011
    Focus group discussion is a research methodology in which a small group of participants gather to discuss a specified topic or an issue to generate data. The main characteristic of a focus group is the interaction between the moderator and the group, as well as the interaction between group members. The objective is to give the researcher an understanding of the participants' perspective on the topic in discussion. Focus groups are rapidly gaining popularity in health and medical research. This paper presents a general introduction of the use of focus groups as a research tool within the context of health research, with the intention of promoting its use among researchers in healthcare. A detailed methodology for the conduct of focus groups and analysis of focus group data are discussed. The potentials and limitations of this qualitative research technique are also highlighted.
    Matched MeSH terms: Biomedical Research/methods*; Qualitative Research
  3. Fulltext Exploring community behaviours and stakeholder challenges in engaging communities with dengue prevention behaviour in Malaysia: implementation research for a qualitative study with a community-based participatory research design
    Samsudin NA, Karim N, Othman H, Naserrudin NA, Sahani M, Hod R, et al.
    BMJ Open, 2024 Mar 12;14(3):e074222.
    PMID: 38479731 DOI: 10.1136/bmjopen-2023-074222
    OBJECTIVES: To use a community-based participatory research (CBPR) design to explore local community behaviours and stakeholders' challenges in engaging communities in dengue prevention behaviours in Hulu Langat, Selangor, Malaysia.

    DESIGN: This CBPR design in implementation comprised in-depth interviews (IDIs) and focus group discussions (FGDs). Themes were identified from the data with inductive and deductive thematic analysis.

    SETTING: FGDs were conducted in local community areas and IDIs were conducted in the local authority (LA) office and the Hulu Langat district health office.

    PARTICIPANTS: All FGD and IDI participants consented to the study, and included health authorities (n=4), LAs (n=7), community leader (n=1), faith leader (n=1), patients diagnosed with dengue (IDIs, n=2) and permanent residents of Hulu Langat who had been exposed to dengue infectious disease (FGDs, n=27).

    RESULTS: The main themes were categorised into community behaviour and stakeholder challenges. The community behaviour-related themes were awareness of dengue disease and Aedes mosquitoes, perception of risk and severity, and involvement of authorities. The themes related to stakeholder challenges were resource constraints and capacity issues, jurisdictional constraints and coordination, and educational dissemination and vandalism.

    CONCLUSIONS: The actions of the authorities shape community and stakeholder behaviours. Effective communication, including clear and aesthetically pleasing messages, motivates individuals to take appropriate actions. It is crucial for the authorities to engage in inclusive communication and consider diverse perspectives, such as those of residents and individuals exposed to dengue infection. Authorities that provide accurate and unbiased information foster transparency and enable informed decision-making by all stakeholders.

    Matched MeSH terms: Qualitative Research; Community-Based Participatory Research*
  4. Fulltext Strategies and approaches to vector control in nine malaria-eliminating countries: a cross-case study analysis
    Smith Gueye C, Newby G, Gosling RD, Whittaker MA, Chandramohan D, Slutsker L, et al.
    Malar J, 2016;15:2.
    PMID: 26727923 DOI: 10.1186/s12936-015-1054-z
    There has been progress towards malaria elimination in the last decade. In response, WHO launched the Global Technical Strategy (GTS), in which vector surveillance and control play important roles. Country experiences in the Eliminating Malaria Case Study Series were reviewed to identify success factors on the road to elimination using a cross-case study analytic approach.
    Matched MeSH terms: Research Design
  5. Fulltext A review of roll-to-roll nanoimprint lithography
    Kooy N, Mohamed K, Pin LT, Guan OS
    Nanoscale Res Lett, 2014;9(1):320.
    PMID: 25024682 DOI: 10.1186/1556-276X-9-320
    Since its introduction in 1995, nanoimprint lithography has been demonstrated in many researches as a simple, low-cost, and high-throughput process for replicating micro- and nanoscale patterns. Due to its advantages, the nanoimprint lithography method has been rapidly developed over the years as a promising alternative to conventional nanolithography processes to fulfill the demands generated from the recent developments in the semiconductor and flexible electronics industries, which results in variations of the process. Roll-to-roll (R2R) nanoimprint lithography (NIL) is the most demanded technique due to its high-throughput fulfilling industrial-scale application. In the present work, a general literature review on the various types of nanoimprint lithography processes especially R2R NIL and the methods commonly adapted to fabricate imprint molds are presented to provide a clear view and understanding on the nanoimprint lithography technique as well as its recent developments.
    Matched MeSH terms: Research Design
  6. Fulltext Non-Linearity in Wide Dynamic Range CMOS Image Sensors Utilizing a Partial Charge Transfer Technique
    Shafie S, Kawahito S, Halin IA, Hasan WZ
    Sensors (Basel), 2009;9(12):9452-67.
    PMID: 22303133 DOI: 10.3390/s91209452
    The partial charge transfer technique can expand the dynamic range of a CMOS image sensor by synthesizing two types of signal, namely the long and short accumulation time signals. However the short accumulation time signal obtained from partial transfer operation suffers of non-linearity with respect to the incident light. In this paper, an analysis of the non-linearity in partial charge transfer technique has been carried, and the relationship between dynamic range and the non-linearity is studied. The results show that the non-linearity is caused by two factors, namely the current diffusion, which has an exponential relation with the potential barrier, and the initial condition of photodiodes in which it shows that the error in the high illumination region increases as the ratio of the long to the short accumulation time raises. Moreover, the increment of the saturation level of photodiodes also increases the error in the high illumination region.
    Matched MeSH terms: Research
  7. Fulltext A Quantum-Based Similarity Method in Virtual Screening
    Al-Dabbagh MM, Salim N, Himmat M, Ahmed A, Saeed F
    Molecules, 2015;20(10):18107-27.
    PMID: 26445039 DOI: 10.3390/molecules201018107
    One of the most widely-used techniques for ligand-based virtual screening is similarity searching. This study adopted the concepts of quantum mechanics to present as state-of-the-art similarity method of molecules inspired from quantum theory. The representation of molecular compounds in mathematical quantum space plays a vital role in the development of quantum-based similarity approach. One of the key concepts of quantum theory is the use of complex numbers. Hence, this study proposed three various techniques to embed and to re-represent the molecular compounds to correspond with complex numbers format. The quantum-based similarity method that developed in this study depending on complex pure Hilbert space of molecules called Standard Quantum-Based (SQB). The recall of retrieved active molecules were at top 1% and top 5%, and significant test is used to evaluate our proposed methods. The MDL drug data report (MDDR), maximum unbiased validation (MUV) and Directory of Useful Decoys (DUD) data sets were used for experiments and were represented by 2D fingerprints. Simulated virtual screening experiment show that the effectiveness of SQB method was significantly increased due to the role of representational power of molecular compounds in complex numbers forms compared to Tanimoto benchmark similarity measure.
    Matched MeSH terms: Research Design
  8. Fulltext Procedure for Detecting Outliers in a Circular Regression Model
    Rambli A, Abuzaid AH, Mohamed IB, Hussin AG
    PLoS One, 2016;11(4):e0153074.
    PMID: 27064566 DOI: 10.1371/journal.pone.0153074
    A number of circular regression models have been proposed in the literature. In recent years, there is a strong interest shown on the subject of outlier detection in circular regression. An outlier detection procedure can be developed by defining a new statistic in terms of the circular residuals. In this paper, we propose a new measure which transforms the circular residuals into linear measures using a trigonometric function. We then employ the row deletion approach to identify observations that affect the measure the most, a candidate of outlier. The corresponding cut-off points and the performance of the detection procedure when applied on Down and Mardia's model are studied via simulations. For illustration, we apply the procedure on circadian data.
    Matched MeSH terms: Research
  9. Fulltext Focus group discussions on the coverage of the southern separatist movement crisis in Yemeni newspapers
    Al-Majdhoub FM, Hamzah AB, Ariffin MY
    Springerplus, 2015;4:229.
    PMID: 26110101 DOI: 10.1186/s40064-015-1000-0
    A qualitative method using focus group discussions (FGDs) was applied in this study to identify people's perceptions on newspaper reporting pertaining to the Southern Separatist Movement (SSM) by different Yemeni newspapers. This paper also looked into the attitudes towards the movement and the popularity of the issue of Yemeni unification. Five FGD groups with a total of 30 participants discussed the subject and some other aspects related to it. The findings of the focu19 groups showed that the southern crisis and SSM had shaken the people's trust on the current form of the unity. The discussion with the groups revealed that media in general and the selected four papers from various political persuasions have no credibility and objectivity, but these papers are trying to instill democratic values which is consistent with their ideology, which have a serious impact on the value of liberal democracy. The participants assured that reporting on the southern cause and the SSM indicated the absence of professional journalism in the media and the political discourse in general.
    Matched MeSH terms: Qualitative Research
  10. Fulltext Efficient Matrix-Based Channel Hopping Schemes for Blind Rendezvous in Distributed Cognitive Radio Networks
    Al-Mqdashi A, Sali A, Noordin NK, Hashim SJ, Nordin R
    Sensors (Basel), 2018 Dec 10;18(12).
    PMID: 30544684 DOI: 10.3390/s18124360
    Channel rendezvous is an initial and important process for establishing communications between secondary users (SUs) in distributed cognitive radio networks. Due to the drawbacks of the common control channel (CCC) based rendezvous approach, channel hopping (CH) has attracted a lot of research interests for achieving blind rendezvous. To ensure rendezvous within a finite time, most of the existing CH-based rendezvous schemes generate their CH sequences based on the whole global channel set in the network. However, due to the spatial and temporal variations in channel availabilities as well as the limitation of SUs sensing capabilities, the local available channel set (ACS) for each SU is usually a small subset of the global set. Therefore, following these global-based generated CH sequences can result in extensively long time-to-rendezvous (TTR) especially when the number of unavailable channels is large. In this paper, we propose two matrix-based CH rendezvous schemes in which the CH sequences are generated based on the ACSs only. We prove the guaranteed and full diversity rendezvous of the proposed schemes by deriving the theoretical upper bounds of their maximum TTRs. Furthermore, extensive simulation comparisons with other existing works are conducted which illustrate the superior performance of our schemes in terms of the TTR metrics.
    Matched MeSH terms: Research
  11. Fulltext Computing the performance of FFNN for classifying purposes
    Ullah, Hadaate, Kiber, Adnan, Huq, Asadul, Mohammad Arif Sobhan Bhuiyan
    Malaysian Journal of Applied Sciences, 2018;3(2):8-20.
    MyJurnal
    Classification is one of the most hourly encountered problems in real world. Neural networks have
    emerged as one of the tools that can handle the classification problem. Feed-Forward Neural Networks
    (FFNN's) have been widely applied in many different fields as a classification tool. Designing an efficient
    FFNN structure with the optimum number of hidden layers and minimum number of layer's neurons for
    a given specific application or dataset, is an open research problem and more challenging depend on
    the input data. The random selections of hidden layers and neurons may cause the problem of either
    under fitting or over fitting. Over fitting arises because the network matches the data so closely as to
    lose its generalization ability over the test data. In this research, the classification performance using
    the Mean Square Error (MSE) of Feed-Forward Neural Network (FFNN) with back-propagation algorithm
    with respect to the different number of hidden layers and hidden neurons is computed and analyzed to
    find out the optimum number of hidden layers and minimum number of layer's neurons to help the
    existing classification concepts by MATLAB version 13a. By this process, firstly the random data has
    been generated using an suitable matlab function to prepare the training data as the input and target
    vectors as the testing data for the classification purposes of FFNN. The generated input data is passed
    on to the output layer through the hidden layers which process these data. From this analysis, it is find
    out from the mean square error comparison graphs and regression plots that for getting the best
    performance form this network, it is better to use the high number of hidden layers and more neurons in
    the hidden layers in the network during designing its classifier but so more neurons in the hidden layers
    and the high number of hidden layers in the network makes it complex and takes more time to execute.
    So as the result it is suggested that three hidden layers and 26 hidden neurons in each hidden layers
    are better for designing the classifier of this network for this type of input data features.
    Matched MeSH terms: Research
  12. General practice research and the family physician
    Md Shajahan MY
    Family Physician, 1994;6:3-3.
    Matched MeSH terms: Research
  13. Comparison of semivariogram models in rain gauge network design
    Mohd Khairul Bazli Mohd Aziz, Fadhilah Yusof, Zalina Mohd Daud, Zulkifli Yusop, Mohammad Afif Kasno
    MATEMATIKA, 2019;35(2):157-170.
    MyJurnal
    The well-known geostatistics method (variance-reduction method) is commonly used to determine the optimal rain gauge network. The main problem in geostatistics method to determine the best semivariogram model in order to be used in estimating the variance. An optimal choice of the semivariogram model is an important point for a good data evaluation process. Three different semivariogram models which are Spherical, Gaussian and Exponential are used and their performances are compared in this study. Cross validation technique is applied to compute the errors of the semivariograms. Rain-fall data for the period of 1975 – 2008 from the existing 84 rain gauge stations covering the state of Johor are used in this study. The result shows that the exponential model is the best semivariogram model and chosen to determine the optimal number and location of rain gauge station.
    Matched MeSH terms: Research Design
  14. Fulltext Co-creation or Co-destruction: A Perspective of Online Customer Engagement Valence
    Siddique J, Shamim A, Nawaz M, Faye I, Rehman M
    Front Psychol, 2020;11:591753.
    PMID: 33613353 DOI: 10.3389/fpsyg.2020.591753
    The increasing interest in online shopping in recent years has increased the importance of understanding customer engagement valence (CEV) in a virtual service network. There is yet a comprehensive explanation of the CEV concept, particularly its impact on multi-actor networks such as web stores. Therefore, this study aims to fill this research gap. In this study, past literature in the marketing and consumer psychology field was critically reviewed to understand the concept of CEV in online shopping, and the propositional-based style was employed to conceptualize the CEV within the online shopping (web stores) context. The outcomes demonstrate that the valence of customer engagement is dependent on the cognitive interpretation of signals that are prompted by multiple actors on a web store service network. If the signals are positively interpreted, positive outcomes such as service co-creation are expected, but if they are negatively interpreted, negative outcomes such as service co-destruction are predicted. These notions create avenues for future empirical research and practical implications.
    Matched MeSH terms: Empirical Research
  15. Fulltext Laser research at the University of Technology Malaysia
    Bidin, N.
    ASM Science Journal, 2008;2(2):179-182.
    MyJurnal
    The laser technology laboratory (LTL) of the Physics Department, University of Technology Malaysia was established in 1989 to support research and development activities. The laboratory provides activities for short- and long-term projects to serve final year undergraduate and post-graduate students in masters and PhD programmes.
    Matched MeSH terms: Research
  16. Fulltext Systematic review and meta-analysis: a glossary
    Wong, L.P.
    JUMMEC, 2007;10(1):3-10.
    MyJurnal
    Systematic review is a comprehensive review of research findings in which all of the primary studies are systematically identified, appraised and summarised using an explicit and reproducible methodology. Meta-analysis is the statistical component of a systematic review in which combinable studies are drawn together via a statistical process. Systematic reviews and meta-analyses are routinely being used in the evidence-based approach to medicine. These short notes intend to highlight important terms in systematic-review and meta-analysis. It is a beginner’s guide for health care professional of any discipline involved in research or practice who seeks to gain more comprehensive understanding of important terms used in systematic review and meta-analysis.
    Matched MeSH terms: Research
  17. Analysis on Target Detection and Classification in LTE Based Passive Forward Scattering Radar
    Raja Abdullah RS, Abdul Aziz NH, Abdul Rashid NE, Ahmad Salah A, Hashim F
    Sensors (Basel), 2016 Sep 29;16(10).
    PMID: 27690051
    The passive bistatic radar (PBR) system can utilize the illuminator of opportunity to enhance radar capability. By utilizing the forward scattering technique and procedure into the specific mode of PBR can provide an improvement in target detection and classification. The system is known as passive Forward Scattering Radar (FSR). The passive FSR system can exploit the peculiar advantage of the enhancement in forward scatter radar cross section (FSRCS) for target detection. Thus, the aim of this paper is to show the feasibility of passive FSR for moving target detection and classification by experimental analysis and results. The signal source is coming from the latest technology of 4G Long-Term Evolution (LTE) base station. A detailed explanation on the passive FSR receiver circuit, the detection scheme and the classification algorithm are given. In addition, the proposed passive FSR circuit employs the self-mixing technique at the receiver; hence the synchronization signal from the transmitter is not required. The experimental results confirm the passive FSR system's capability for ground target detection and classification. Furthermore, this paper illustrates the first classification result in the passive FSR system. The great potential in the passive FSR system provides a new research area in passive radar that can be used for diverse remote monitoring applications.
    Matched MeSH terms: Research
  18. Fulltext Methodologies for measuring sustainability of product/process: a review
    Pezhman Ghadimi, Noordin Mohd Yusof, Muhamad Zameri Mat Saman, Mahmood Asadi
    Pertanika Journal of Science & Technology, 2013;21(2):303-326.
    MyJurnal
    Academic and corporate interest in sustainable product and process development has risen considerably
    in recent years. This can be seen by the number of papers published and in particular by special issued of journals. This paper reports the results of a review of published peer-reviewed literature from 1987 to 2012 to provide an up-to-date picture of sustainability and sustainable assessment. A structured methodology is followed to narrow down the search from around 3500 papers to 111. A variety of different sustainability assessment methodologies are reviewed in two classified research areas: product sustainability assessment and process sustainability assessment. In presenting a detailed taxonomy of product and process sustainability assessment methods, the paper also outlines the advantages and weaknesses of the sustainability assessment methods. The review sheds light on the weak points of current research in this area. The paper also highlights several key issues which have to be taken into account in attempting to develop a product or process sustainability assessment research paradigm for future applications in manufacturing systems.
    Matched MeSH terms: Research
  19. The central role of national programme management for the achievement of malaria elimination: a cross case-study analysis of nine malaria programmes
    Smith Gueye C, Newby G, Tulloch J, Slutsker L, Tanner M, Gosling RD
    Malar J, 2016 Sep 22;15(1):488.
    PMID: 27659770
    A malaria eradication goal has been proposed, at the same time as a new global strategy and implementation framework. Countries are considering the strategies and tools that will enable progress towards malaria goals. The eliminating malaria case-study series reports were reviewed to identify successful programme management components using a cross-case study analytic approach.
    Matched MeSH terms: Research Design
  20. Fulltext Aerodynamic study of a modern sepak takraw ball using Smoke flow visualization technique
    Abdul Syakir Abdul Mubin, Norhafizan Ahmad
    Movement Health & Exercise, 2015;4(2):19-30.
    MyJurnal
    It has been shown in previous studies that the flight trajectories of sports balls are influenced by their aerodynamic characteristics. These aerodynamic characteristics are primarily dependent on the physical shape and surface texture of the balls. Even though sepak takraw is well established as a sport, little is known regarding the aerodynamic characteristics of the sepak takraw ball, which has a rather complex shape and surface texture. Hence, the main objective of this research is to investigate the aerodynamic characteristics (specifically the drag and lift coefficients) and flow features of a modern sepak takraw ball commercially available in the market by means of numerical simulations and wind tunnel experiments using the smoke flow visualization technique. The aerodynamic characteristics and flow features of the ball are determined for non-spinning conditions at a wind speed of 3 m/s. It is found that the drag coefficient and lift coefficient of the sepak takraw ball is 0.4868400 and - 0.0130915, respectively. The images captured from the smoke flow visualization experiments reveal that the sepak takraw ball is in the subcritical flow regime at a wind speed of 3 m/s, which is the regime before the drag crisis. The laminar boundary layer separates from the upper and lower surfaces of the ball at points upstream of the equator of the ball, creating a large wake region downstream of the sepak takraw ball and resulting in high drag. This in turn, influences the trajectory of the sepak takraw ball in flight. The flow features observed from the smoke flow visualization experiments are representative of the flow during a sepak takraw game. Owing to the complexity of sepak takraw ball, it is recommended that the aerodynamic characteristics of the sepak takraw ball are investigated for spinning conditions in future studies.
    Matched MeSH terms: Research
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