Evaluasi Desain Antarmuka Dengan Pendekatan Kemudahan Penggunaan (Studi Kasus Mobile App Sport Galaxy Center)

Penelitian ini bertujuan untuk mengevaluasi desain antar muka pada mobile app sport galaxy center menggunakan pendekatan interpretasi faktor manusia dan ergonomi, sehingga diharapkan dapat meningkatkan kemudahan dan kegunaan (userfulness) pada sistem tersebut. Metode evaluasi yang digunakan adalah evaluasi heuristic, dimana secara umum desain antar muka (interface), kemudahan penggunaan (USAbility) dari mobile app sport galaxy center cukup baik berdasarkan kedua metode tersebut, tetapi ada beberapa hal yang perlu diperbaiki terutama dalam karakteristik kemudahan penggunaan

Fundamentals Studies Of Electro-Silver Plating Process.

The growth of electronic industry as a whole, and the demand to support the expansion of its underlying infrastructure will continue to drive the improvements in electroplating process. In order to improve existing electroplating process, the study of fundamentals aspects for electroplating process has become important

Temperature influence on total volatile compounds (TVOCs) inside the car cabin of visible light transmittance

In the automotive industry indoor air quality or Vehicle Indoor Air Quality (VIAQ) are caused by various substances emitted from interior materials inside a vehicle. The volatile organic compounds (VOCs) are an example of emitted substances from the interior materials which is harmful to the human body. As stated by previous researches, there is a strong correlation between the total VOCs emission and interior temperature. This occurs due to the solar radiation through the back window glasses, windscreen and side window glasses. This trapped heat can accelerate the melting process of trim materials such as hard plastic and rubber, thus causing the emission of total VOCs (TVOCs). Therefore, reducing the percentage of visible light transmittance (VLT) will help to reduce radiation process. The aim of this study is to investigate the effect of VLT level on TVOCs emission in the vehicle cabin under static condition (parked and unventilated) and operating condition (driving and air-conditioned). For static condition the result shows that the TVOCs concentration linearly decreases whenever the percentage of VLT level decreases. However, for operating condition the percentage of VLT have less significance after 50 minutes driving time. In conclusion, the VLT levels have a strong relationship to the TVOCs concentration despite after a long driving time

PI Controller Design Using Model Reference Adaptive Control Approaches For A Chemical Process

This paper discusses the application of Model Reference Adaptive Control (MRAC) concepts in designing an adaptive feedback controller to tune a given PI controller. The approaches of using the gradient (MIT) and stability (Lyapunov) methods are shown. The effectiveness of the two methods are shown through simulation and comparison is made to show which method give the best result. The results show that the stability method produces a better result

Distributed Cooperative Spectrum Sensing in Cognitive Radio Networks with Adaptive Detection Threshold

This paper proposes a cooperative sensing algorithm based on distributedfusion strategy and maintained probability of false alarm for cognitive radio. It furtherintroduces a reporting strategy that discusses how cooperative sensing in distributedmanner can select among possible candidates in order to reduce bandwidthrequirement. We adopted a dynamic distributed architecture for cooperative sensingbased on the link quality and found condition on the channel quality for cooperation tobe beneficial. Using probability of detection, and BER metrics we evaluated theperformance improvement of distributed cooperation over direct cooperation and noncooperativesensing. We used analytical formulation with possible candidate selectioncriteria to investigate and maximize the cooperation gain. By employing suchdistribution and selection technique, the reporting error due to the fading channel isreduced. Results show that the method effectively improve performance of sensing, itincrease the probability of detection up to 0.9 at <0.1 probability of false alarm.Sensitivity requirement is reduced with network scale and the number of nodesparticipate in decision fusion is reduced about 42% at probability of false alarm 0.1.ROC curve has obvious improvement compared with existing methods

Swelling kinetic behavior of biochar-graft superabsorbent polymer composites

Superabsorbent polymers (SAPs) are crosslinked three dimensional structures that poses high swelling capacity in aqueous medium. Its application in agriculture beneficial as it is able to retain moisture in soil. SAPs incorporated with bio-char have been prepared via solution polymerization of polyacrylic acid with co-monomer of polyacrylamide in the presence of bio-char using methylenebisacryalmide (MBA) as a crosslinking agent and ammonium persulfate (APS) as an initiator. In this research, the swelling kinetic behavior of SAP with biochar was studied on the effect of biochar percentage loading from 0-0.8wt. SEM imaging of sap icorporated biochar shows a porous structure which influences water absorbency. The maximum of water absorbency capacity reached an optimum value of 129.89 g/g at 0.4 % before decreasing with increasing bio-char loading. Mathematical model of kinetic diffusivity also revealed that the SAP-biochar incorporated follows a second order kinetic. The presence of bio-char could enhance physical properties by increasing the water-holding capacity, enhancing its water absorbency ability. Application of SAP incorporated biochar not only able to retain water, it could also help to fertilize agriculture

Congenital biliary anomaly with secondary cholangiohepatitis in a Siamese cross kitten

A 5-month-old Siamese cross kitten was presented with jaundice and a palpable abdominal mass at the right cranial quadrant. The extra-hepatic biliary system was markedly distended upon abdominal ultrasonography. Complete bile duct obstruction was ruled out due to the presence of urobilinogen, light brown stool, and consistently normal alkaline phosphatase (ALP) levels. Head tremors developed on the second day of hospitalization. Tentative diagnoses of congenital biliary anomaly and hepatic encephalopathy were derived and exploratory laparotomy revealed a severely distended and tortuous bile duct indistinguishable from the gallbladder with negative duodenal filling. Modified cholechoduodenostomy was performed however the kitten did not recover from general anaesthesia. Secondary cholangiohepatitis and hepatic encephalopathy were confirmed upon histopathologic examination.Primary congenital biliary atresia or choledochal cyst with secondary cholangiohepatitis was suspected. Biliary anomalies are rare in cats with only two cases reported in the literature. These conditions are often challenging to diagnose and due to the limited treatment options, have a poor prognosis

Development of Standard Approach for Sickle Blade Manufacturing

The sickle blade used in the motorised palm cutter known as “CANTAS” provides fast, easy and safe pruning and harvesting for those hard to reach applications. Jariz Technologies Company is experiencing problem in the consistency of sickle blade which was supplied by various blade manufacturers. Identifying the proper blade material with a certain hardness value would produce a consistent as well as long lasting sickle blade. A Standard Operating Procedure (SOP) in the manufacturing of the sickle blades was suggested to ensure a consistent blade. From this study, the optimum temperature for hardening and tempering of SUP 9 had been identified as 850 °C for hardening and 480 °C for tempering. The final hardness after heat treatment for SUP 9 was around 55HRC

Simulation and analysis for harvesting Dioscorea hispida tubers

This study discussed an analysis and simulation of fixture stand structure that will use for data collection of force required for harvesting the tubers of Dioscorea hispida. The tubers were surrounded by roots which were well gripped to the soil which made harvesting process difficult. Therefore, a new tool fixture equipped with digital force gauge device to gripped stem dioscorea hispida is required. Imada digital force measurement gauges are state-of-the-art, instruments capable of the highly accurate measurements required in quality testing to determine the strength or functionality of a part or product. The information from the experiments is used to model and simulate the tool in Computer Aided Design (CAD) environment. The solid modelling software Solidworks was used for the design, modelling and simulation of the equipment and the finite element analysis to determine the stress affected on various fixture designs