Open Access Short Research Article

A Swot (Strengths, Weaknesses, Opportunities and Threats) Evaluation of University Student-Staff Partnerships in Co-creating Educational Resources, Peer Support and Research Within STEM (Science, Technology, Engineering & Mathematics) Subjects

Anita Diaz, Jennifer Hill, Rhiannon Jenkins, Alison E Kay, Andrew Pye, Dawn Morley, Natalia Tejedor Garavito

Journal of Scientific Research and Reports, Page 161-170
DOI: 10.9734/JSRR/2015/14498

The aim of this research was to compare perceived opportunities and challenges of co-creating educational resources, peer learning support and research within Science, Technology, Engineering & Mathematics (STEM) subjects. Two questions were addressed:
1) What types of STEM co-creation outputs are perceived possible within the categories of education resources, research and peer learning support?
2) What was the perceived Strengths Weaknesses, Opportunities and Threats (SWOT) analysis for co-creation of education resources, research and peer learning support?
Study Design: These questions were explored in a descriptive survey with 30 academic staff delegates from across STEM disciplines and UK universities who attended a Higher Education Academy workshop “Students as partners in co-creating STEM outputs.”
Place and Duration of Study: The one day long workshop was hosted by Bournemouth University on Jan 16th 2014.
Methodology: For question 1 the delegates gave examples from their experience for each of the following categories for co-creation: i) educational resources ii) peer learning support iii) research. For question 2 they worked as a team to consider one of these categories and, using nominal group technique, identified and themed as many strengths, weaknesses, opportunities and threats as possible to partnerships with students.
Results: 29 different co-creation outputs were identified (7 for co-created educational resources, 10 for co-created research and 12 for co-created peer support). Delegates reported proportionally most strengths for co-created research and most challenges for co-created educational resources. Strengths centered on energizing student engagement through co-creating new products/understanding. Challenges highlighted the need to ensure more widespread student engagement to maintain momentum and data quality.
Conclusion: Findings suggest that two keys ways to enhance co-creation of STEM outputs are to better understand the range of factors that motivate different students and to better enable students and staff to perceive the specific benefits to them of engaging in co-creation.

Open Access Short Research Article

Influence of Fluorescence Whitening Treatment on the UV Blocking Property of 100% Cotton Knitted Fabric

C. W. Kan, Y. L. Lam

Journal of Scientific Research and Reports, Page 171-174
DOI: 10.9734/JSRR/2015/13533

This paper was concerned with the effect of fluorescence whitening treatment on the UV blocking effect of 100% cotton knitted structure. UV measurement was carried out using a spectrophotometer and UVA transmission and UPF were obtained. The results revealed that fluorescence whitening process did affect much the UV blocking effect.

Open Access Original Research Article

Thermal Performance of High Power LED on Boron Doped Aluminium Nitride Thin Film Coated Copper Substrates

Zeng Yin Ong, Subramani Shanmugan, Devarajan Mutharasu

Journal of Scientific Research and Reports, Page 109-119
DOI: 10.9734/JSRR/2015/14232

Aims: The paper is aim to study the thermal performance of Boron doped Aluminium Nitride (B-AlN) thin film coated over Copper (Cu) substrate to improve surface configuration of the interface between two materials with different synthesis parameters.
Study Design: Synthesis of Boron doped AlN thin film by sputtering and post processed for various temperatures. The processed samples were characterized to study the behavior of B doping as well as the annealing temperature in changing the properties of B doped AlN thin film. The structural and surface properties were studied and reported.
Place and Duration of Study: Nano Optoelectronic Research Laboratory, School of Physics, University Sains Malaysia, Penang 11800, Malaysia, between December 2013 and July 2014.
Methodology: B-AlN thin films were prepared with five different gas ratios over Cu substrates by DC-RF coupled sputtering method and suggested for thin film based thermal interface material (TIM). 3W green LED package was tested with B-AlN thin films coated Cu substrates through thermal transient and surface analysis. The results are compared with the performance of bare Cu substrates.
Results: The thin film prepared with gas ratio of Ar 7: N2 13 coated at 200°C showed the lowest thermal resistance Rth (53.27 K/W), board to ambient thermal resistance RthB-A (36.03 K/W) and the lowest junction temperature Tj(120.98°C) at higher driving current (700 mA). Surface analysis results show that the thin film mentioned above exhibits low in surface roughness (8 nm) and range of valley depth (30-80 nm), which contribute in thermal performance of LED.
Conclusion: Overall, B-AlN films coated with gas ratio of Ar 7: N2 13 are more favorable in reducing both total thermal resistance and junction temperature (Tj) of LED.

Open Access Original Research Article

The Structural Design of Six-Axis Force/Torque Sensor Using Virtual Prototyping Technique

Hilman Syaeful Alam, Demi Soetraprawata, Bahrudin .

Journal of Scientific Research and Reports, Page 120-131
DOI: 10.9734/JSRR/2015/14921

The design of a six-axis F/T sensor is an important and challenging research to produce a sensor that is able to measure simultaneously the six-component force and torque accurately and efficiently. The structural design is one of the key issues to be considered to improve the performances of the sensor that cross coupling is the most important factor regarding a sensor quality. The purpose of this study is to design a six-axis F/T sensor that has a novel and compact design, has a low coupling error and can meet the design criteria such as mechanical strength, stiffness, and reliability in the receiving load. Virtual prototyping technique is applied with the aim to shorten the time and reduce the manufacturing cost of the physical prototypes. In this study, the six-axis F/T sensor is designed using four cross beam symmetrically that is able to measure three axial forces (Fx,Fy,Fz) and three axial moments (Mx,My,Mz). Based on the structural integrity evaluation, the structure of the sensor will certainly secure to the plastic failure of materials because it is still in the area of the material elasticity. Then based on the simulation results of the strain, the highest cross-coupling errors is -1.67% which is relatively small compared to the principal coupling error. Therefore, the design of six-axis F/T sensor using virtual prototyping technique is able to show satisfactory results and can be used as a guideline for manufacturing the physical prototype.

Open Access Original Research Article

Mixture Model of the Exponential, Gamma and Weibull Distributions to Analyse Heterogeneous Survival Data

Yusuf Abbakar Mohammed, Bidin Yatim, Suzilah Ismail

Journal of Scientific Research and Reports, Page 132-139
DOI: 10.9734/JSRR/2015/15014

Aims: In this study a survival mixture model of three components is considered to analyse survival data of heterogeneous nature. The survival mixture model is of the Exponential, Gamma and Weibull distributions.
Methodology: The proposed model was investigated and the Maximum Likelihood (ML) estimators of the parameters of the model were evaluated by the application of the Expectation Maximization Algorithm (EM). Graphs, log likelihood (LL) and the Akaike Information Criterion (AIC) were used to compare the proposed model with the pure classical parametric survival models corresponding to each component using real survival data. The model was compared with the survival mixture models corresponding to each component.
Results: The graphs, LL and AIC values showed that the proposed model fits the real data better than the pure classical survival models corresponding to each component. Also the proposed model fits the real data better than the survival mixture models corresponding to each component.
Conclusion: The proposed model showed that survival mixture models are flexible and maintain the features of the pure classical survival model and are better option for modelling heterogeneous survival data.

Open Access Original Research Article

Flooding Hazards and Mental Perception: A Theoretical Framework

M. A. Rakib, M. S. Akter, Md. Babul Hossain, Md. Atiur Rahman, Mohammad A. H. Bhuiyan

Journal of Scientific Research and Reports, Page 140-151
DOI: 10.9734/JSRR/2015/13706

This study was focused on flooding hazards and its negative consequences at the Bandaler char area in Bangladesh. It was performed to make out the local views, long term experiences and health impact perspective to regional feature. It was observed that, people perception and observational data indicate to latent hit in the community. People views are revealed that, concept on environment and climatic variables were varied from person to person owing to educational qualification and age. Results showed that, flood frequency and its damage rate negatively impacted on mental health. In addition, a theoretical outline is drawn which could be effective to control the situational flood risk in a society. It may implies to integrated flood risk management approach whereas it is included both upcoming stage to recovery stage.

Open Access Original Research Article

Increase in Tannin Content of Some Selected Nigerian Vegetables during Blanching and Juicing

Bamidele Adewale Salau, Kuburat Temitope Odufuwa, Olumide D. Olukanni, Adeleke K. Atunnise, Gbenga G. Daramola

Journal of Scientific Research and Reports, Page 152-160
DOI: 10.9734/JSRR/2015/14245

Aims: This study was set to investigate the content of tannin in fresh, blanched vegetables and juiced extracts from the commonly consumed vegetables in South-Western Nigeria.
Place and Duration of Study: Chemical science department, Redeemers University, Nigeria. Research work was done between January and March, 2013.
Methodology: The vegetables were obtained from four different major markets in South West, Nigeria and grouped into three: fresh, blanched, and juiced, using standard laboratory procedures to analyze tannin content.
Results: The results from fresh vegetables showed that Amaranthus viridis has the highest tannin level (30.20±1.05 mg/100g dry weight) while lowest was in Veronia amygdalina (1.02±0.02 mg/100g dry weight). Also, in blanched vegetables Amaranthus viridis has the highest tannin level (46.81 mg/100g dry weight) and lowest was found in Corchorus oliterus (5.05 mg/100g dry weight). In the juiced extract however, Launea taraxacifolia has highest tannin level (735.77 mg/100g dry weight) while lowest was recorded in Celosia argentea (67.18 mg/100g dry weight).
Conclusion: It can be concluded from this study that juicing and blanching substantially increase tannin content in most vegetables.

Open Access Original Research Article

Influence of Footedness on Dynamic Joint Stiffness during the Gait Stance Phase

Tiago Atalaia, João M. C. S. Abrantes, Alexandre Castro-Caldas

Journal of Scientific Research and Reports, Page 175-183
DOI: 10.9734/JSRR/2015/14745

Aims: Dynamic joint stiffness (DJS) is used as a joint stability indicator. The objective of the present study is to verify the influence of footedness in ankle joint stability during the gait stance phase.
Study Design: Comparative study.
Place and Duration of Study: MovLab/ CICANT/ Universidade Lusófona de Humanidades e Tecnologias, between November 2013 and June 2014
Methodology: 31 subjects (20 female and 11 male) presenting different footedness (right and left) were assessed. Ten gait stance phase trials (five each side) were recorded using a 3D motion capture system and a force platform. Synchronized ankle sagittal moment of force and angular position were used to calculate DJS for three defined sub-phases of gait stance phase: controlled plantar flexion, controlled dorsiflexion and powered plantar flexion. Mann-Whitney U test was calculated to assess footedness influence on biomechanical variables.
Results: No significant differences were found between dominant and non-dominant limb in different combinations of footedness and gender.
Conclusion: Footedness do not seem to influence DJS and consequent joint stability. Observing the trials per participant, differences can be noted but commonly used statistical approach cannot highlight those differences. Further studies should address ankle frontal plane behaviour or assess differences at the knee and hip joints, as they could present more differences that could be statistically significant.