Prior researchers indicate that mental load is one of the most important contributors to a traffic accident. The aim of the paper is to investigate the impact and the correlation of road condition and driving experience on driver’s mental workload. The driving test consists of 3 road complicity situation (urban road, highway, rural road) with 26 drivers with average 21 years old in different experience level (average 4.08 years’ experience). NASA TLX questioner is used as subjective driver’s mental load measurement with three dimensions relate to the demands imposed on the subject (Mental, Physical and Temporal Demands) and three to the interaction of a subject with the task (Effort, Frustration, and Performance). There are 3 cameras placed on the left side, right side and front car to identify the road condition. According to experiment, it was found that drivers felt that frustration level, business, and mental-demand factors dominate the impact on high-level workload (96.15%). Highway road conditions provide an average overall workload score of 62 (OWS) which was better compared to city road (OWS = 69) and rural road (OWS = 66). Based on street complexity, it is necessary to improve road conditions that resemble highway road by reducing potential hazard.
1 January 2018 in Journal of Ecological Engineering
This study investigates the eco-innovation variable which has the significant effecton creative industries center’s performance of marble and natural stone craft sector in Tulungagung, Indonesia. The object of the study is the creative industries center with the non-renewable raw material....
The dairy cattle productivity is very depending on the quality of their environment and physiological aspect. Hence, the purpose of the paper is to looking for the relationship model of physiological, environmental and milk productivity by using artificial intelligence (AI). The model will be useful for the user to decide the best cow treatment in order to gain the best milk production. The research is started with literature review and early survey of cattle physiological, environment factors and milk productivity. The next step is measuring the environment data (temperature, wind speed, and relative humidity) and measuring physiological aspect (heart rate, body temperature) correlated with milk productivity in 500 pairs of data. All the data are collected and stored into the database and then trained and validated using Back Propagation Neural Network (BPNN) with Genetic Algorithm (GA) optimization. The initial BPNN architectures are selected in 2 hidden layer, delta bar delta learning rule, sigmoid transfer function and epoch 10000. As a result, the system successfully developed an intelligent tool to predict milk production in any levels of environment and physical condition. Based on sensitivity analysis, the relative humidity, heart rate, environment and cow body temperature are categorized in strong impact, beside that are in weak impact on milk production.
The aim of this research is to investigate the hardness of implant material Stainless Steel (SS) 316L due to ball peening at low temperature. In this paper, SS316L ball peening was conducted in various cryogenic temperature. The steel ball peening mechanism was bombarded on metal surface using peening ball. The shot peening treatment was performed for 10 minutes using steel balls with the size of 5 mm and 6 Bar compressed air flow. The treatment temperatures were carried out at-35°C, -45°C, and-55°C respectively. The results show that the hardness of SS316L after steel ball peening processes increasing as decreasing temperature treatment.
31 January 2017 in International Review of Mechanical Engineering (IREME)
This paper reveals Gus Dur's ijtihād paradigm of contemporary fiqh in Indonesia in answering the problems of life. This study is a type of library research by tracing Gus Dur's works, Gus Dur's thought studies and other related scientific studies. This research uses the approach of Milton K. Munitz's thinking and the frame of mind ‘Abd al-Majīd al-Najjār. This research found that the conservative ijtihād paradigm has led to conservative fiqh which is unable to establish dialectics between fiqh norms and socio-cultural and humanitarian values, which can even lead to radical Islamic movements and acts of terrorism. Therefore, Gus Dur's contemporary jurisprudential ijtihād paradigm is needed to build this dialectic. Theoretically, the Gus Dur ijtihād paradigm has characteristics promoting different socio-cultural and humanitarian values from Islamic reformers. In practical terms, the Gus Dur ijtihād paradigm has made Indonesian socio-cultural values a consideration in understanding and applying contemporary fiqh without changing existing fiqh norms. Gus Dur's contemporary fiqh has also become the basis for maintaining the Pancasila ideology, the 1945 Constitution, the Unitary State of the Republic of Indonesia and Unity in Diversity.