Padang, Indonesia

Andalas University
Padang, Indonesia

University of Andalas is an university in the Indonesian city of Padang, in the Province of West Sumatra. It consists of 15 faculties, most of them located at the main campus building, Limau Manis, 12 km from the centre of the city. The campus occupies 5 km². The Faculty of Medicine and Faculty of Dentistry are located in the city center, near the Central General Hospital M. Djamil.It is the oldest university in Indonesia outside of Java. Wikipedia.

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The objective of the present study was to evaluate the effects of stocking density on survival and larval development of Portunus pelagicus (Linnaeus, 1758) under laboratory conditions. First zoeal crabs were stocked in triplicate glass beaker at densities of 20, 30, 40, 50, and 60 larvae L−1. The result showed that high stocking density (40-60 larvae L−1) consistently produced low successful metamorphosis of first crab instar (19.11-20.00%). The low stocking density level (20-30 larvae L−1) tested in this study resulted in slightly higher C1 survival ranging from 22.67 to 23.11%. However, no significant difference (p > 0.05) was found in the treatments. The relationships between stocking density and larval development duration and successful metamorphosis of C1 were linear and quadratic respectively. This aims to generate further information on the relationship between stocking density and survival of C1 P. pelagicus. The result of this work will therefore provide a basis for future research on the effects of stocking density on the survival of C1 P. pelagicus. © 2017, BIOFLUX SRL. All rights reserved.

Yanuar F.,Andalas University
AIP Conference Proceedings | Year: 2016

The main objective of this present study is to demonstrate the estimation of validity values and its consistency based on structural equation model. The method of estimation was then implemented to an empirical data in case of the construction the patient loyalty model. In the hypothesis model, service quality, patient satisfaction and patient loyalty were determined simultaneously, each factor were measured by any indicator variables. The respondents involved in this study were the patients who ever got healthcare at Puskesmas in Padang, West Sumatera. All 394 respondents who had complete information were included in the analysis. This study found that each construct; service quality, patient satisfaction and patient loyalty were valid. It means that all hypothesized indicator variables were significant to measure their corresponding latent variable. Service quality is the most measured by tangible, patient satisfaction is the most mesured by satisfied on service and patient loyalty is the most measured by good service quality. Meanwhile in structural equation, this study found that patient loyalty was affected by patient satisfaction positively and directly. Service quality affected patient loyalty indirectly with patient satisfaction as mediator variable between both latent variables. Both structural equations were also valid. This study also proved that validity values which obtained here were also consistence based on simulation study using bootstrap approach. © 2016 AIP Publishing LLC.

Thamrin R.,Andalas University
MATEC Web of Conferences | Year: 2017

An analytical prediction on flexural response of reinforced concrete (RC) beams strengthened with steel plates is presented in this paper. The method used in this study is based on theoretical moment-curvature determination which able to determine the complete response of reinforced concrete cross section subjected to monotonic flexural load. A computer program named Reinforced Concrete Cross Section Analysis (RCCSA) was developed and utilized to facilitate the computation process. Two types of flexural strengthening (tension-face and web bonded steel plates) were analyzed using the software and then compared with the experimental result. Result validation using existing available software was also carried out using Respone-2000 software. The comparison shows that the analytical model can be used to predict the flexural response of strengthened reinforced concrete cross section with a good accuracy. © The Authors, published by EDP Sciences, 2017.

Namigo E.L.,Andalas University
AIP Conference Proceedings | Year: 2016

This paper presents characterizations of p-Typed and n-Typed polycrystalline silicon germanium (poly-SiGe) as key materials of thermoelectric generator for energy-scavenging application. Four key material properties-Seebeck coefficient, electrical resistivity, thermal conductivity and specific contact resistance-were measured to determine the figure-of-merit (ZT) as a performance measurement of the materials. Measured Seebeck coefficients are 34μV/K for p-Type and 185μV/K for n-Type. Thermal conductivity is around 3W/mK. Contact resistance is still considerably high and there is no significant reduce on the value as annealing temperature increased from 375°C to 475°C for annealing time of 30 and 60 minutes. The value of ZTs for p-Type and n-Type material are 0,0086 and 0,063 respectively. From ZT value alone, it can be seen that ZT of p-SiGe should be improved. Since the value of total electrical resistance is determined by the material itself, further work on Ge and doping level variations is required as well as optimization of annealing temperature and time to reduce contact resistance. © 2016 AIP Publishing LLC.

Anggraini T.,Andalas University
Pakistan Journal of Nutrition | Year: 2017

Background and Objectives: Syzygium oleana (S. oleana) is a plant that can potentially serve as a natural food colorant. Anthocyanin present in fruit and red (young) leaves also functions as an antioxidant. The purpose of this study was to obtain information about the antioxidant activity of S. oleana and to measure the total polyphenol and anthocyanin content in its fruits and red leaves using 3 kinds of solvents: Water, methanol and ethanol. Materials and Methods: This study used the exploratory method. The total phenolic content of the S. oleana fruit and leaf extract was measured using gallic acid as a standard. The DPPH was used to measure the antioxidant activities of S. oleana fruit and leaf extracts. Anthocyanin pigment concentration was calculated. Results: The results showed that the antioxidant content is activated up to 3.87, 26.4 and 65.65% with water, methanol and ethanol solvents, respectively. The total polyphenol content in water, methanol and ethanol are 55.37, 78.87 and 122.10 mg mL-1, respectively. Anthocyanin content measured in water, methanol and ethanol are 16.42, 19.20 and 15.16%, respectively. Conclusion: This study suggests that S. oleana can be applied as a food colorant and that the best solvent for extraction is methanol. © 2017 Tuty Anggraini.

It is constructed convolution of generated random variable from independent and identically exponential distribution with stabilizer constant. The characteristic function of this distribution is obtained by using Laplace-Stieltjes transform. The uniform continuity property of characteristic function from this convolution is obtained by using analytical methods as basic properties. © 2016 AIP Publishing LLC.

Bahri S.,Andalas University
AIP Conference Proceedings | Year: 2016

In this research, the minimization of the fire station model is constructed. The maximum time data required by the firefighter is used to construct the minimization model of the fire station in Padang. The model is used to determine the minimum number of the available fire station in Padang town. By using Matlab 2013a, the solution of the model can be found based on the Branch and Bound method. It denotes that the fire station must be built in Lubuk Begalung and Kuranji sub-districts. © 2016 AIP Publishing LLC.

Ridwan F.,University of Auckland | Ridwan F.,Andalas University | Xu X.,University of Auckland
Robotics and Computer-Integrated Manufacturing | Year: 2013

Tight quality requirements and stringent customer demands are the main thrust behind the development of new generation machine tool controllers that are more universal, adaptable and interoperable. The development of some international standards such as STEP and STEP-NC presents a vision for intelligent CNC machining. Implementation of STEP-NC enabled Machine Condition Monitoring (MCM) is presented in this paper. The system allows optimisation during machining in order to shorten machining time and increase product quality. In the system, an optiSTEP-NC, an AECopt controller and a Knowledge-Based Evaluation (KBE) module have been developed. The aim of the optiSTEP-NC system is to perform initial feed-rate optimisation based on STEP-NC data to assist process planners in assigning appropriate machining parameters. AECopt acts as a connector between the process planner and machining environment with the intention to provide adaptive and automatic in-process machining optimisation. KBE based-MTConnect is responsible for obtaining machining know-how. Optimisation is performed before, during or after machining operations, based on the data collected and monitored such as machining vibration, acceleration and jerk, cutting power and feed-rate. © 2012 Elsevier Ltd. All rights reserved.

Yanuar F.,Andalas University
Journal of Physics: Conference Series | Year: 2014

Structural equation modelling (SEM) is a multivariate method that incorporates ideas from regression, path-analysis and factor analysis. A Bayesian approach to SEM may enable models that reflect hypotheses based on complex theory. The development and application of Bayesian approaches to SEM has, however, been relatively slow but with modern technology and the Gibbs sampler, is now possible. The Gibbs sampler can be used to obtain samples of arbitrary size from the posterior distribution over the parameters of a structural equation model (SEM) given covariance data and a prior distribution over the parameters. Point estimates, standard deviations and interval estimates for the parameters can be computed from these samples. This study shows that the conditional distributions required in the Gibbs sampler are familiar distributions, hence the algorithm is very efficient. A goodness of fit statistic for assessing the proposed model is presented. An illustrative example with a real data is presented.

Schroder-Butterfill E.,University of Southampton | Fithry T.S.,Andalas University
Ageing and Society | Year: 2014

The provision of physical care is a sensitive matter in all cultures and is circumscribed by moral injunctions and personal preferences. Research on Western cultures has shown care networks to be narrow subsets of people's wider networks and revealed dependence to be deeply undermining of full personhood. In non-Western societies these issues have received little attention, although it is sometimes assumed that care provision and dependence are much less problematic. This paper uses longitudinal ethnographic data from two ethnic groups in rural Indonesia to compare care preferences and practices in old age and to examine the implications of care dependence. The groups manifest varying degrees of daughter preference in care and differ in the extent to which notions of shame and avoidance prohibit cross-gender intimate care and care by 'non-blood' relatives. Demographic and social constraints often necessitate compromises in actual care arrangements (e.g. dependence on in-laws, neighbours or paid carers), not all of which are compatible with quality care and a valued identity. We argue that by probing the norms and practices surrounding care provision in different socio-cultural settings, it becomes possible to arrive at a deeper understanding of kinship, personhood and sociality. These insights are not only of sociological interest but have implications for people's vulnerability to poor quality care in old age. © 2012 Cambridge University Press .

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