Displaying publications 21 - 40 of 83 in total

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  1. Awaludin IS, Ishak A, Pop I
    Sci Rep, 2018 Sep 11;8(1):13622.
    PMID: 30206256 DOI: 10.1038/s41598-018-31777-9
    The steady two dimensional magnetohydrodynamic (MHD) boundary layer flow and heat transfer over a stretching/shrinking permeable wedge is numerically investigated. The partial differential equations governing the flow and heat transfer are transformed into a system of ordinary differential equations using a similarity transformation. These equations are then solved numerically using the boundary value problem solver, bvp4c in Matlab software. It is found that dual solutions exist for a certain range of the shrinking strength. A stability analysis is performed to identify which solution is stable and physically reliable.
    Matched MeSH terms: Problem Solving
  2. Abdollahi A, Abu Talib M, Carlbring P, Harvey R, Yaacob SN, Ismail Z
    J Health Psychol, 2018 09;23(10):1321-1331.
    PMID: 27352885 DOI: 10.1177/1359105316653265
    This study was designed to examine the relationships between problem-solving skills, hardiness, and perceived stress and to test the moderating role of hardiness in the relationship between problem-solving skills and perceived stress among 500 undergraduates from Malaysian public universities. The analyses showed that undergraduates with poor problem-solving confidence, external personal control of emotion, and approach-avoidance style were more likely to report perceived stress. Hardiness moderated the relationships between problem-solving skills and perceived stress. These findings reinforce the importance of moderating role of hardiness as an influencing factor that explains how problem-solving skills affect perceived stress among undergraduates.
    Matched MeSH terms: Problem Solving*
  3. Mustafar F, Harvey MA, Khani A, Arató J, Rainer G
    eNeuro, 2018 07 11;5(4).
    PMID: 30073190 DOI: 10.1523/ENEURO.0167-18.2018
    Our understanding of the neurobiological underpinnings of learning and behavior relies on the use of invasive techniques, which necessitate the use of animal models. However, when different species learn the same task, to what degree are they actually producing the same behavior and engaging homologous neural circuitry? This question has received virtually no recent attention, even as the most powerful new methodologies for measuring and perturbing the nervous system have become increasingly dependent on the use of murine species. Here, we test humans, rats, monkeys, and an evolutionarily intermediate species, tree shrews, on a three alternative, forced choice, visual contrast discrimination task. As anticipated, learning rate, peak performance, and transfer across contrasts was lower in the rat compared to the other species. More interestingly, rats exhibited two major behavioral peculiarities: while monkeys and tree shrews based their choices largely on visual information, rats tended to base their choices on past reward history. Furthermore, as the task became more difficult, rats largely disengaged from the visual stimulus, reverting to innate spatial predispositions in order to collect rewards near chance probability. Our findings highlight the limitation of muridae as models for translational research, at least in the area of visually based decision making.
    Matched MeSH terms: Problem Solving/physiology*
  4. Sahoo S, Mohammed CA
    Korean J Med Educ, 2018 Jun;30(2):109-118.
    PMID: 29860777 DOI: 10.3946/kjme.2018.86
    PURPOSE: This intervention was aimed to analyse the effect of academic writing and journal critiquing as educational approaches in improving critical thinking and collaborative learning among undergraduate medical students.

    METHODS: A research proposal writing format was created for the 4th year medical students of Melaka Manipal Medical College, Malaysia during their ophthalmology clinical postings. The students worked in small groups and developed research protocols through an evidence based approach. This was followed by writing reflective summaries in academic portfolios about the activity undertaken. A mixed methods study was designed to explore the possible role of collaborative research proposal writing in enhancing critical thinking and collaborative learning.

    RESULTS: Analysis of reflections submitted by 188 medical students after the intervention indicate that majority of them found an improvement in their skills of critical thinking and collaborative learning as a result of research protocol writing. All participants agreed that the model helped in applying concepts to new situations in the form of designing their own study, which reflected in enhanced higher order cognitive skills.

    CONCLUSION: This study shows that the introduction of a structured module in the core medical curriculum that focuses on research writing skills embedded with collaborative and reflective practices can enhance collaborative learning, critical thinking, and reasoning among medical students.

    Matched MeSH terms: Problem Solving*
  5. Jamil DM, Al-Okbi AK, Al-Baghdadi SB, Al-Amiery AA, Kadhim A, Gaaz TS, et al.
    Chem Cent J, 2018 Feb 05;12(1):7.
    PMID: 29404816 DOI: 10.1186/s13065-018-0376-7
    BACKGROUND: Relatively inexpensive, stable Schiff bases, namely 3-((4-hydroxybenzylidene)amino)-2-methylquinazolin-4(3H)-one (BZ3) and 3-((4-(dimethylamino)benzylidene)amino)-2-methylquinazolin-4(3H)-one (BZ4), were employed as highly efficient inhibitors of mild steel corrosion by corrosive acid.

    FINDINGS: The inhibition efficiencies were estimated based on weight loss method. Moreover, scanning electron microscopy was used to investigate the inhibition mechanism. The synthesized Schiff bases were characterized by Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy and micro-elemental analysis. The inhibition efficiency depends on three factors: the amount of nitrogen in the inhibitor, the inhibitor concentration and the inhibitor molecular weight.

    CONCLUSIONS: Inhibition efficiencies of 96 and 92% were achieved with BZ4 and BZ3, respectively, at the maximum tested concentration. Density functional theory calculations of BZ3 and BZ4 were performed to compare the effects of hydroxyl and N,N-dimethylamino substituents on the inhibition efficiency, providing insight for designing new molecular structures that exhibit enhanced inhibition efficiencies.

    Matched MeSH terms: Problem Solving
  6. Mardiana Mansor, Ayu Sulaini Jusoh, Lim, Chin Choon
    MyJurnal
    The purpose of this article is to discuss the strengths and limitations of two teaching strategies currently utilized
    in Diploma in Nursing, in Malaysia. The diploma was started in 1994 with a 3 years duration of study. It also
    requires certificates of qualification from the Malaysian Quality Agency (MQA) and the Malaysian Board of
    Nursing.
    Teaching strategies of individual teachers differ according to their teaching styles and generalized lesson plans,
    which include structures, instructional objectives, outlines of teaching and learning tactics, and other
    accessories needed to implement the strategies. A strategy does not necessarily follow a single track all the
    time, but changes according to the demands of the situations such as the age, level, needs, interests and abilities
    of the students. Thus, strategy is a method that is more comprehensive. It is directional in nature and refers to
    the goal oriented activities of the teacher. Hence, it resembles science rather than arts.
    Lecture and simulation methods are the best teaching strategies for nursing students in Malaysia. The lecture
    method allows clarification on difficult concepts, organizes thinking, and promotes problem solving attitudes,
    whereas simulation provides students with the opportunity for proper social, emotional and intellectual
    development. Moreover, students are highly motivated by educational simulation, for they enjoy the learning
    process while participating in it.
    Matched MeSH terms: Problem Solving
  7. SAUD AMERROUF SIAN, TERRY LUCAS
    MyJurnal
    When we heard Retro design, people will think about the fashion, music, poster, style and trend of the 1940s to1980s. The trend retro-futurism, however, is entirely different. It is a trend that was created by writers, artists and film directors in the past and is closely related to science fiction. This research concentrates on investigating the characteristics of retro-futurism and how it can be used to incorporate its features into building design for 3D animation. An exploratory method was used to analyse the architectural design of the past. The gathered information could give some insights and understanding of what retro-futurism is and the reason behind why the architectural design in the previous era was created that way. The process and challenges of implementing retro-futurism visual style are also discussed. As the result of the collected data, developing a design with the aesthetic of retro-futurism become more accessible and well-planned.
    Matched MeSH terms: Problem Solving
  8. Ponnusamy V, Lines RLJ, Zhang CQ, Gucciardi DF
    PeerJ, 2018;6:e4778.
    PMID: 29780672 DOI: 10.7717/peerj.4778
    Background: The majority of past work on athletes' use of psychological skills and techniques (PSTs) has adopted a variable-centered approach in which the statistical relations among study variables are averaged across a sample. However, variable-centered-analyses exclude the possibility that PSTs may be used in tandem or combined in different ways across practice and competition settings. With this empirical gap in mind, the purposes of this study were to identify the number and type of profiles of elite athletes' use of PSTs, and examine differences between these clusters in terms of their self-reported mental toughness.

    Methods: In this cross-sectional survey study, 285 Malaysian elite athletes (170 males, 115 females) aged 15-44 years (M = 18.89, SD = 4.49) completed measures of various PSTs and mental toughness. Latent profile analysis was employed to determine the type and number of profiles that best represent athletes' reports of their use of PSTs in practice and competition settings, and examine differences between these classes in terms of self-reported mental toughness.

    Results: Our results revealed three profiles (low, moderate, high use) in both practice and competition settings that were distinguished primarily according to quantitative differences in the absolute levels of reported use across most of the PSTs assessed in practice and competition settings, which in turn, were differentially related with mental toughness. Specifically, higher use of PSTs was associated with higher levels of mental toughness.

    Conclusion: This study provides one of the first analyses of the different configurations of athletes' use of PSTs that typify unique subgroups of performers. An important next step is to examine the longitudinal (in) stability of such classes and therefore provide insight into the temporal dynamics of different configurations of athletes' use of PSTs.

    Matched MeSH terms: Problem Solving
  9. Choudhry FR, Khan TM, Park MS, Golden KJ
    Front Public Health, 2018;6:187.
    PMID: 30065918 DOI: 10.3389/fpubh.2018.00187
    The Kalasha are a religious, ethnic, and linguistic minority community in Pakistan. They are indigenous people living in remote valleys of the Hindu Kush Mountains in northern Pakistan, neighboring Afghanistan. The Kalasha are pastoral, as well as agricultural people to some extent, although they are increasingly facing pressures from globalization and social change, which may be influencing youth and community development. Their traditional world view dichotomizes and emphasizes on the division of the pure (Onjeshta) and the impure (Pragata). There remains a scarcity of literature on mental health and resilience of indigenous communities in South Asia and Pakistan generally, and the polytheistic Kalasha community specifically. Thus, the current study was conducted with the aim to explore the cultural protective factors (resilience) of the Kalasha youth (adolescents and emerging adults) and to explore their perceived etiological understandings and preferred interventions for mental health support systems. The theoretical framework of Bronfenbrenner's (1, 2) ecological systems model was used. Interpretative Phenomenological Analysis (IPA) was conducted, considering the advantage of its idiographic approach and the "double hermeneutic" analytic process. This methodology was consistent with the aim to understand and make sense of mental health and resilience from the Kalasha indigenous perspective. A total of 12 in-depth interviews were conducted with adolescents and emerging adults (5 males, 7 females), along with ethnographic observations. The analysis revealed 3 superordinate themes of mental health perceptions and interventions, each with more specific emergent themes: (1) Psychological Resilience/Cultural Protective Factors Buffering Against Mental Health Problems (Intra-Communal Bonding & Sharing; Kalasha Festivals & Traditions; Purity Concept; Behavioral Practice of Happiness and Cognitive Patterns); (2) Perceived Causes of Mental Health Issues (Biological & Psychosocial; Supernatural & Spiritual; Environmental); and (3) Preferred Interventions [Shamanic Treatment; Ta'awiz (Amulets); Communal Sharing & Problem Solving; Medical Treatment; Herbal Methods]. The overall findings point to the need for developing culturally-sensitive and indigenous measures and therapeutic interventions. The findings highlighted the Kalasha cultural practices which may promote resilience. The findings also call for indigenous sources of knowledge to be considered when collaboratively designing public health programs.
    Matched MeSH terms: Problem Solving
  10. Yuanita P, Zulnaidi H, Zakaria E
    PLoS One, 2018;13(9):e0204847.
    PMID: 30261056 DOI: 10.1371/journal.pone.0204847
    This study aims to identify the role of mathematical representation as a mediator between mathematical belief and problem solving. A quasi-experimental design was developed that included 426 Form 1 secondary school students. Respondents comprised 209 and 217 students in the treatment and control groups, respectively. SPSS 23.0, ANATES 4 and Amos 18 were used for data analysis. Findings indicated that mathematical representation plays a significant role as mediator between mathematical belief and arithmetic problem solving. The Realistic Mathematics Education (RME) approach successfully increased the arithmetic problem-solving ability of students.
    Matched MeSH terms: Problem Solving
  11. Rabihah Md. Sum
    MyJurnal
    Risk management requires human judgements, from risk identification, assessment to response. Although automated tools are useful in handling large amounts of data and in performing complex calculations rapidly, humans undertake the entire risk management process. They bring to the process their intuitions, insights, previous experiences and skills. Therefore, creating a rich source of information of risks faced by an organisation. Ignoring human factors may impoverish information and limit risk management to only measurable factors. This study contributes to the field of decision-making and risk assessment by investigating and discussing in detail how to quantify subjective judgements using the Analytic Hierarchy Process (AHP). AHP is used to assess risk of an insurance company. It discusses how to do risk assessment by combining both intuition and analytic in the decision-making process. The study defines intuition as knowledge and experience, and analytic as the mathematics or quantitative analysis to derive the result. It demonstrates how Analytic Hierarchy Process (AHP) - a flexible multi-attribute or multi-criteria decision making tool, enables risk managers to use both intuition and analytic to do risk assessment. Risk assessment using AHP produces global priority weights representing the overall risk ranking of an insurance company. The study develops a risk assessment problem and uses AHP to organise and structure risks and sub-risks of the problem. It uses formative evaluation method with open-ended questionnaires to obtain feedbacks from risk managers on AHP. Three employees of a risk management department in a government agency assesses the risks using AHP. AHP strengths are easy to use and understand, improves risk assessment and useful for risk assessment problems that have scarce or no data. AHP limitation are the numbers and repetitiveness of the pairwise comparisons. The participants either ignore some of the pairwise questions or they answer randomly instead of deliberate judgements.
    Matched MeSH terms: Problem Solving
  12. Gorgey, Annie, Nor Azian Aini Mat
    MATEMATIKA, 2018;34(1):1-2.
    MyJurnal
    Symmetric methods such as the implicit midpoint rule (IMR), implicit trapezoidal
    rule (ITR) and 2-stage Gauss method are beneficial in solving Hamiltonian problems
    since they are also symplectic. Symplectic methods have advantages over non-symplectic
    methods in the long term integration of Hamiltonian problems. The study is to show
    the efficiency of IMR, ITR and the 2-stage Gauss method in solving simple harmonic
    oscillators (SHO). This study is done theoretically and numerically on the simple harmonic
    oscillator problem. The theoretical analysis and numerical results on SHO problem
    showed that the magnitude of the global error for a symmetric or symplectic method
    with stepsize h is linearly dependent on time t. This gives the linear error growth when
    a symmetric or symplectic method is applied to the simple harmonic oscillator problem.
    Passive and active extrapolations have been implemented to improve the accuracy of the
    numerical solutions. Passive extrapolation is observed to show quadratic error growth
    after a very short period of time. On the other hand, active extrapolation is observed to
    show linear error growth for a much longer period of time.
    Matched MeSH terms: Problem Solving
  13. Suzana Shahar, Huijin Lau, Hanis Mastura Yahya, Nor Fadilah Raj, Normah Che Din
    Jurnal Sains Kesihatan Malaysia, 2018;16(101):239-240.
    MyJurnal
    There is some evidence stated that mood states might influence cognitive functioning, such as episodic memory, working memory and creative problem solving. This study was conducted to evaluate the relationship between mood states and cognitive functioning among older adults with Mild Cognitive Impairment (MCI). This study involved 12 male and 37 female subjects from Klang Valley aged 60 year old and above. MCI was defined based on criteria proposed by Peterson. Cognitive functions of the subjects were accessed using Mini Mental State Examination (MMSE), Rey Auditory Verbal Learning Test (RAVLT), Digit Span, Digit Symbol Substituition Test (DSST) and Visual Reproduction; while mood states including tension, depression, anger, vigour, esteem related affect, fatigue and confusion were accessed using Profile of Mood States (POMS) questionnaire. Total positive subscales score, total negative subscales score and total mood disturbance (TMD) were also calculated. There were significant positive correlations between tension (r = 0.325, p = 0.30), vigour (r = 0.235, p = 0.036), esteem related affect (r = 0.316, p = 0.034) and total positive subscales score (r = 0.307, p = 0.040) with verbal episodic memory as measured using RAVLT fifth trial. In addition, positive correlations were also observed between vigour (r = 0.228, p = 0.035) and total positive subscales score (r = 0.237, p = 0.025) with DSST. After adjusted for confounding factors, subjects who scored higher in esteem related affect (Adjusted OR = 0.390, 95% CI [0.069-0.711], p = 0.019) and tension (Adjusted OR = 0.253, 95% CI [0.075-0.431], p = 0.007) had better verbal episodic memory. Subjects who have higher total positive subscales score were also had faster processing speed (OR = 0.856, 95% CI [0.099-1.614], p = 0.028). However after adjusted for confounding factors, the relationship was not significant (Adjusted OR = 0.383, 95% CI [-0.247-1.013], p = 2.226). Older adults with MCI who had a more positive mood tend to have a better short-term verbal memory and faster processing speed.
    Matched MeSH terms: Problem Solving
  14. Anna F, Sabariah S, Wong WK, Mariappan M
    The purpose of this study is to verify the constructs found in the technological problem solving instrument. The instrument used to measure the technological problem solving is the Technology Problem Solving Inventory (PSI-TECH), derived from the original instrument PSI-PSYCH which consists of three constructs. Exploratory Factor Analysis (EFA); KaiserMeyer-Olkin (KMO) and Barlett's analysis were applied for factor analysis in the validity and reliability of the PSI-TECH instrument. The minimum weighting factor is 0.60, used as the cut off value for factor loading. Meanwhile, the Cronbach alpha value 0.70 and above is considered reliable in this study. A total of 102 primary school students, 12 years old were randomly selected among Miri district primary school students in Sarawak. After the survey was carried out, the results of the analysis confirmed that there were three constructs that had been successfully extracted as described in the original PSI-TECH. However, 4 items were dropped from the list. The results of the analysis can provide guidance to researchers in developing this technological problem solving questionnaire, since demographics and geographies tested were diverse. As a result, the findings provide guidance to local researchers in using these instruments.
    Matched MeSH terms: Problem Solving
  15. Anna F, Sabariah S, Wong WK, Muralindran M
    Jurnal Psikologi Malaysia, 2018;32:136-146.
    This program was conducted to analyze the effect of a robotic program in assessing technological problem solving among primary school children. The content in the learning module which contain technological problem solving and visible thinking activities has been going through expert validation before it were applied in this study. The instrument used to measure the technological problem solving is Technological Problem Solving Inventory (PSI-TECH). Quasi-experiments was implemented in this study, involving experimental and control group which were equal and homogeneous in selected characteristics. The robotic and basic visual coding program was conducted for 5 months, with an hour of lesson each week, consistent with the school syllabus and activities. Result obtained by collecting the data before and after the program, and quantitative analysis of t-test and MANOVA were used. Result had shown a significance positive value for the experimental group after the program. This study contributes in the field of education, in investigating the technological problem-solving skills among students. In addition, help to diversify the studies in the field of robotics.
    Matched MeSH terms: Problem Solving
  16. Nantha YS
    Korean J Fam Med, 2017 Nov;38(6):315-321.
    PMID: 29209469 DOI: 10.4082/kjfm.2017.38.6.315
    A prescriptive model approach in decision making could help achieve better diagnostic accuracy in clinical practice through methods that are less reliant on probabilistic assessments. Various prescriptive measures aimed at regulating factors that influence heuristics and clinical reasoning could support clinical decision-making process. Clinicians could avoid time-consuming decision-making methods that require probabilistic calculations. Intuitively, they could rely on heuristics to obtain an accurate diagnosis in a given clinical setting. An extensive literature review of cognitive psychology and medical decision-making theory was performed to illustrate how heuristics could be effectively utilized in daily practice. Since physicians often rely on heuristics in realistic situations, probabilistic estimation might not be a useful tool in everyday clinical practice. Improvements in the descriptive model of decision making (heuristics) may allow for greater diagnostic accuracy.
    Matched MeSH terms: Problem Solving
  17. Ooi CHR, Ho WL, Bandrauk AD
    Sci Rep, 2017 07 27;7(1):6739.
    PMID: 28751648 DOI: 10.1038/s41598-017-05915-8
    We study the photoelectron spectra by intense laser pulses with arbitrary time dependence and phase within the Keldysh framework. An efficient semianalytical approach using analytical transition matrix elements for hydrogenic atoms in any initial state enables efficient and accurate computation of the photoionization probability at any observation point without saddle point approximation, providing comprehensive three dimensional photoelectron angular distribution for linear and elliptical polarizations, that reveal the intricate features and provide insights on the photoionization characteristics such as angular dispersions, shift and splitting of photoelectron peaks from the tunneling or above threshold ionization(ATI) regime to non-adiabatic(intermediate) and multiphoton ionization(MPI) regimes. This facilitates the study of the effects of various laser pulse parameters on the photoelectron spectra and their angular distributions. The photoelectron peaks occur at multiples of 2ħω for linear polarization while  odd-ordered peaks are suppressed in the direction perpendicular to the electric field. Short pulses create splitting and angular dispersion where the peaks are strongly correlated to the angles. For MPI and elliptical polarization with shorter pulses the peaks split into doublets and the first peak vanishes. The carrier envelope phase(CEP) significantly affects the ATI spectra while the Stark effect shifts the spectra of intermediate regime to higher energies due to interference.
    Matched MeSH terms: Problem Solving
  18. Tan FHP, Azzam G
    Malays J Med Sci, 2017 Mar;24(2):6-20.
    PMID: 28894399 MyJurnal DOI: 10.21315/mjms2017.24.2.2
    Alzheimer's disease (AD) is the most widespread neurodegenerative disorder worldwide. Its pathogenesis involves two hallmarks: aggregation of amyloid beta (Aβ) and occurrence of neurofibrillary tangles (NFTs). The mechanism behind the disease is still unknown. This has prompted the use of animal models to mirror the disease. The fruit fly, Drosophila melanogaster has garnered considerable attention as an organism to recapitulate human disorders. With the ability to monopolise a multitude of traditional and novel genetic tools, Drosophila is ideal for studying not only cellular aspects but also physiological and behavioural traits of human neurodegenerative diseases. Here, we discuss the use of the Drosophila model in understanding AD pathology and the insights gained in discovering drug therapies for AD.
    Matched MeSH terms: Problem Solving
  19. AHMED, ABUBAKAR, MURTALA MUHAMMAD
    MyJurnal
    Despite the reported limitations of the qualitative research in comparison to other methodologies, we contend that the common criticisms against it are too often using criteria explicitly analogous to quantitative reasoning. We critically analysed the reported limitations of qualitative research in the literature to deconstruct the conflicting discourses that enable an understanding of their subjectivity. Also, we provide a philosophical justification that both qualitative and quantitative methodologies are appropriate for studying a different form of reality. Lincoln and Guba’s four principles for determining the quality of qualitative research rigour along with confirmability, transferability, credibility and dependability are deemed appropriate rather than the commonly employed internal and external validity, reliability and objectivity. Finally, we argued that a widespread use of a different standard for judging the quality of qualitative research consequential to its philosophical stance is the panacea for the unfair criticisms in the future.
    Matched MeSH terms: Problem Solving
  20. Nurhafizah Jamain, Ismail Musirin, Mohd Helmi Mansor, Muhammad Murtadha Othman, Siti Aliyah Mohd Salleh
    MyJurnal
    This paper presents adaptive particle swarm optimization for solving non-convex economic dispatch problems. In this study, a new technique was developed known as adaptive particle swarm optimization (APSO), to alleviate the problems experienced in the traditional particle swarm optimisation (PSO). The traditional PSO was reported that this technique always stuck at local minima. In APSO, economic dispatch problem are considered with valve point effects. The search efficiency was improved when a new parameter was inserted into the velocity term. This has achieved local minima. In order to show the effectiveness of the proposed technique, this study examined two case studies, with and without contingency.
    Matched MeSH terms: Problem Solving
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