5,731 research outputs found

    Kepercayaan Mahasiswa terhadap Kerajaan

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    The level of trust in government is important because its reflect the support of people to their government. The higher level of trust will give government more power to implement development to the country. Moreover, government that gain higher confidence from the people's can play their role effectively compared to the government who failed to gain support from them. This paper will discuss the level of trust among local universities students' in Malaysia. Their opinion is crucial because they are our future leader

    Study of Phonon Modes in Germanium Nanowires

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    The observation of pure phonon confinement effect in germanium nanowires is limited due to the illumination sensitivity of Raman spectra. In this paper we measured Raman spectra for different size germanium nanowires with different excitation laser powers and wavelengths. By eliminating the local heating effect, the phonon confinement effect for small size nanowires was clearly identified. We have also fitted the Raman feature changes to estimate the size distribution of nanowires for the first time.Comment: 11 pages,15 figure

    Symptoms versus problems (SVP) in household high speed broadband (HSBB): regaining momentum for Unifi, Malaysia

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    Problem identification is a talent and skill set required in all leaders. The objective of this study is to reveal an improved research method by integrating mixed-method research combined with problem identification method (using symptoms versus problems (SVP) framework) for telco service providers. The SVP framework discovers the primary causes to the decrease in revenue growth rates. Malaysia’s household broadband penetration rate grew from 15.2% (2007) to 67.1% (2013). Meanwhile, the growth rate for Unifi, offered by Telekom Malaysia (TM), decreased from 104% (2012) to 30% (2013). Why? There are eight causes, specifically; not prioritizing 4G LTE license; obligating social services to rural areas; providing 20-30 Mbps wireless broadband packages by the competitors; offering less competitive price; not covering all zones; offering less favorable service contracts; offering limited packages; and receiving customer complaints. The sequential methodology process began with semi-structured interviews, analysis of unpublished company data, customer survey on 164 respondents and field observation which were all summarized into a root-cause analysis tool called symptoms versus problems framework (SVP). The SVP indicates TM acquired Packed One to overcome HSBB issues; revamp its strategies to product content offering instead of head-on price war; establishing bureaucracy busting team, competitors busting teams on product innovation; collaborating with local broadcasting companies; and developing talent. Interestingly, this study discovers another framework on critical success factors for telco service providers through development of “House of Pillars for Rapid Growth” of TM in Malaysia

    Two loop electroweak corrections to BˉXsγ\bar B\rightarrow X_s\gamma and Bs0μ+μB_s^0\rightarrow \mu^+\mu^- in the B-LSSM

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    The rare decays BˉXsγ\bar B\rightarrow X_s\gamma and Bs0μ+μB_s^0\rightarrow \mu^+\mu^- are important to research new physics beyond standard model. In this work, we investigate two loop electroweak corrections to BˉXsγ\bar B\rightarrow X_s\gamma and Bs0μ+μB_s^0\rightarrow \mu^+\mu^- in the minimal supersymmetric extension of the SM with local BLB-L gauge symmetry (B-LSSM), under a minimal flavor violating assumption for the soft breaking terms. In this framework, new particles and new definition of squarks can affect the theoretical predictions of these two processes, with respect to the MSSM. Considering the constraints from updated experimental data, the numerical results show that the B-LSSM can fit the experimental data for the branching ratios of BˉXsγ\bar B\rightarrow X_s\gamma and Bs0μ+μB_s^0\rightarrow \mu^+\mu^-. The results of the rare decays also further constrain the parameter space of the B-LSSM.Comment: 33 pages, 9 figures, Published in EPJ

    Constructivist Approach to Learning Activity: The Case of Junior Secondary Students’ Misconception on the Three States of Matter in Basic Science, Nigeria

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    The paper focuses on the misconceptions of students on the states of matter and suggests the need for scienceteachers to adopt the 7E model in order to reduce these misconceptions and promote students’ learning. The paperdevelops and proposes a learning activity based on a systematic review of scholarly articles, thesis, and curriculumthat investigated the subject matter. The 7E model consists of phases such as elicit, engage, explore, explain,elaborate, evaluate, and extend. The researchers prepared a specific lesson plan on identifying the properties andstructures of states of matter using the 7Es learning cycle specifying the teacher’s activities and the correspondingstudents’ activities. The 7E model is recommended for teaching states of matter based on studies that found theapproach to be effective in helping students eliminate scientific misconception and improve understanding

    Severe Hypercapnia and Outcome of Mechanically Ventilated Patients with Moderate or Severe Acute Respiratory Distress Syndrome

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    PURPOSE: To analyze the relationship between hypercapnia developing within the first 48 h after the start of mechanical ventilation and outcome in patients with acute respiratory distress syndrome (ARDS). PATIENTS AND METHODS: We performed a secondary analysis of three prospective non-interventional cohort studies focusing on ARDS patients from 927 intensive care units (ICUs) in 40 countries. These patients received mechanical ventilation for more than 12 h during 1-month periods in 1998, 2004, and 2010. We used multivariable logistic regression and a propensity score analysis to examine the association between hypercapnia and ICU mortality. MAIN OUTCOMES: We included 1899 patients with ARDS in this study. The relationship between maximum PaCO2 in the first 48 h and mortality suggests higher mortality at or above PaCO2 of ≥50 mmHg. Patients with severe hypercapnia (PaCO2 ≥50 mmHg) had higher complication rates, more organ failures, and worse outcomes. After adjusting for age, SAPS II score, respiratory rate, positive end-expiratory pressure, PaO2/FiO2 ratio, driving pressure, pressure/volume limitation strategy (PLS), corrected minute ventilation, and presence of acidosis, severe hypercapnia was associated with increased risk of ICU mortality [odds ratio (OR) 1.93, 95% confidence interval (CI) 1.32 to 2.81; p = 0.001]. In patients with severe hypercapnia matched for all other variables, ventilation with PLS was associated with higher ICU mortality (OR 1.58, CI 95% 1.04-2.41; p = 0.032). CONCLUSIONS: Severe hypercapnia appears to be independently associated with higher ICU mortality in patients with ARDS.info:eu-repo/semantics/publishedVersio

    Synthesis and Characterization of Polyaniline Emeraldine Salt: Tunable Photoluminescence and Optoelectronic Properties for Advanced Applications

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    Polyaniline emeraldine salt (PANI-ES) is a conductive polymer with promising optoelectronic properties, synthesized via chemical oxidative polymerization and confirmed in its emeraldine salt form through structural analysis. Optical characterization revealed distinct absorption bands linked to key electronic transitions, indicating semiconducting behavior. Under UV excitation, photoluminescence studies showed two main emission features corresponding to dimer and excimer states, both exhibiting large Stokes shifts and a quantum yield of 0.27. These long Stokes shifts suggest efficient energy relaxation, while the moderate quantum efficiency highlights the material’s capability for light-emitting applications. The combination of tunable emission, stable optical response, and electrical conductivity positions PANI-ES as a versatile material for photonic technologies. Potential applications include organic light-emitting diodes (OLEDs), photodetectors, and optically pumped organic lasers. Overall, the study demonstrates that PANI-ES offers a favorable balance of structural stability, optical performance, and electronic properties, making it a strong candidate for integration into advanced optoelectronic and photonic devices

    Identification of gene modules associated with low temperatures response in Bambara groundnut by network-based analysis

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    Bambara groundnut (Vigna subterranea (L.) Verdc.) is an African legume and is a promising underutilized crop with good seed nutritional values. Low temperature stress in a number of African countries at night, such as Botswana, can effect the growth and development of bambara groundnut, leading to losses in potential crop yield. Therefore, in this study we developed a computational pipeline to identify and analyze the genes and gene modules associated with low temperature stress responses in bambara groundnut using the cross-species microarray technique (as bambara groundnut has no microarray chip) coupled with network-based analysis. Analyses of the bambara groundnut transcriptome using cross-species gene expression data resulted in the identification of 375 and 659 differentially expressed genes (p<0.01) under the sub-optimal (23°C) and very sub-optimal (18°C) temperatures, respectively, of which 110 genes are commonly shared between the two stress conditions. The construction of a Highest Reciprocal Rank-based gene co-expression network, followed by its partition using a Heuristic Cluster Chiseling Algorithm resulted in 6 and 7 gene modules in sub-optimal and very sub-optimal temperature stresses being identified, respectively. Modules of sub-optimal temperature stress are principally enriched with carbohydrate and lipid metabolic processes, while most of the modules of very sub-optimal temperature stress are significantly enriched with responses to stimuli and various metabolic processes. Several transcription factors (from MYB, NAC, WRKY, WHIRLY & GATA classes) that may regulate the downstream genes involved in response to stimulus in order for the plant to withstand very sub-optimal temperature stress were highlighted. The identified gene modules could be useful in breeding for low-temperature stress tolerant bambara groundnut varieties
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