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Stress analysis on the frame of peanut skin peeler using autodesk inventor software

IOP Conference Series: Earth and Environmental Science 2019年第1期343卷

作者： Cipto K A Rahangmetan F Sariman Hariyanto S B Bahar M T Sapsal Departemen of Mechanical Engineering Faculty of Engineering Universitas Musamus Merauke Indonesia Civil Engineering Study Program Universitas Muhammadiyah Buton Indonesia Department of Agricultural Technology Hasanuddin University Makassar Indonesia

The framework of the peanut shelling machine functions as a supporting structure for the components of the peanut shelling machine, namely the top funnel, funnel retaining frame, the lid on the peeler shaft, pulley, sieve shaft, sieve, engine body. Frame material is mild steel equal leg angles size 45 x 45 x 5, yield strength is 3,002E + 04 psi and tensile strength is 5.004E + 04 psi. Skeletal strength analysis was carried out using the autodesk inventor professional 2015 software. The engine frame was given axial loading of 500 N, 600 N, 700 N, 800 N, 900 N, and 1000 N. The analysis results of the maximum stress occur at 1000 N loading, amount to 16.85 Mpy, and the maximum deformation occurs at 1000 N loading, amounting to 0.07727 mm.

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Yet Another Algorithm for the Computation of Polyhedral Positive Invariant Sets

Yet Another Algorithm for the Computation of Polyhedral Posi...

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IEEE Conference on Control technology and Applications

作者： Daniel Y. Rubin Hoai-Nam Nguyen Per-Olof Gutman Autonomous Systems Program Israel Institute of Technology Haifa Israel Control Signal and System Department IFP Energies Nouvelles Lyon France Faculty of Civil and Environmental Engineering Israel Institute of Technology Haifa Israel

We present a new algorithm for the computation of polyhedral positive invariant sets. A set given by its half-spaces is used to yield an optimized positive invariant set w.r.t. a given autonomous system. The algorithm requires the solution of a single semi-definite program followed by a linear program. Extensions to the plant uncertain case, and to a symmetric set case are presented. Two numerical examples demonstrate the algorithm usage and capabilities.

关键词： Yet Another Algorithm Computation Polyhedral Positive Invariant Sets

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Identifying occurrences of accident at work place in terms of occupational safety on roads and bridges infrastructure in Indonesia

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IOP Conference Series: Materials Science and engineering 2019年第1期513卷

作者： Mairizal Edrizal Mohammad Ismail Rosli Mohamad Zin School of Civil Engineering Faculty of Engineering Universiti Teknologi Malaysia 81310 Johor Malaysia Program of Industrial Engineering Faculty of Industrial Technology Universitas Pamulang 15417 Banten Indonesia Post Graduate of Civil Engineering Universitas Bung Hatta 25133 Padang West Sumatera Indonesia

The economic growth of a country will be greatly influenced by road and bridge infrastructure that serves as a connecting flow of goods and human transportation. There are still some road and bridge construction projects in Indonesia that show the occurrence of accidents because lack of awareness by the management of the adverse effects of safety. Therefore, the author tries to find solutions to the improvement measures in minimizing the occurrence of occupational accidents by providing safety knowledge to the Project Managers and related staff, to be more concerned about the safety and the environment around the project. Based on data collected from the Ministry of Public Works and Indonesian People's Housing, there are several work accidents in toll road projects in Indonesia from August 2017 to February 2018. When viewed from several of these accidents, it can be concluded that the main cause is the lack of knowledge of the management staff about the need to enforce safety regulations, especially in the work of lifting object to the upper structure. Therefore, a commitment is needed to implement serious occupational safety regulations from all stakeholders who play a role in developing this infrastructure project.

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Human Dimensions: Journey and Future of the Inclusive Ecology Section

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The Bulletin of the Ecological Society of America 2021年第3期102卷

作者： Anne Marie Aramati Casper Kennedy F. Rubert-Nason Wilnelia Recart Kylea Rose Garces Civil and Environmental Engineering Graduate Degree Program in Ecology Colorado State University 400 Isotope Dr Fort Collins Colorado 80521 USA Natural Sciences University of Maine at Fort Kent 23 University Drive Fort Kent Maine 04734 USA Biology Department University of San Diego Shiley Center for Science & Technology 372 San Diego California 92110 USA Department of Biology University of Louisville Life Sciences Building of 40292 #139 Louisville Kentucky 40208 USA

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Ambient noise analysis for characterizing sub-surface dynamic parameters

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IOP Conference Series: Materials Science and engineering 2020年第1期712卷

作者： B Setiawan T Saidi A Yuliannur U Polom P J Ramadhansyah M I Ali Program Studi Teknik Geologi Fakultas Teknik Universitas Syiah Kuala Indonesia Jurusan Teknik Sipil Fakultas Teknik Universitas Syiah Kuala Indonesia Leibniz Institute for Applied Geophysics Stilleweg 2 30655 Hannover Germany Faculty of Civil Engineering Technology Universiti Malaysia Pahang 26300 Kuantan Pahang Malaysia

Ambient noise analysis of horizontal to vertical spectral ratio (HVSR) method has been used widely to provide reliable estimates of the site fundamental frequency and to constrain the inversion of near-surface shear wave velocity. The present paper focuses on the site measurement using the aforementioned analysis by means of the HVSR method for characterizing sub-surface dynamic parameters in the City of Banda Aceh, Indonesia. A Guralp CMG-6TD broadband seismometer was used in this study to cover a wide frequency range from 0.033 Hz to 50 Hz in standard operation. The instrument was deployed at two different sites (i.e. Location#1 of Blang Padang and Location#2 of Stadion Dirmutala) in the City of Banda Aceh for at least 2 hours for ambient noise recording. This continuous of 2 hours' microtremor time series was separated into 30 minutes record from which the site fundamental frequency and shear wave velocity of the measured site were deduced. The later sub-surface dynamic parameter was validated using another technique of reflection seismic. This investigation suggests the fundamental frequency of 0.45 Hz at Location#1 and of 0.65 Hz at Location#2. The estimated shear wave velocity of the top 30 m, Vs,30 of this investigation is 165 m/s at Location#1 and 156 m/s at Location#2. Both the site fundamental frequency and shear wave velocity are important for infrastructure design in the high seismic region of Banda Aceh, Indonesia.

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Meteorological drought monitoring across different rainfall regimes of Ethiopia using chirps V2- Rainfall data 38

Meteorological drought monitoring across different rainfall ...

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38th Asian Conference on Remote Sensing - Space Applications: Touching Human Lives, ACRS 2017

作者： Goshu, Estifanos Lemma Upadhyaya, Shruti Ramsankaran, R.A.A.J. Department of Civil Engineering Indian Institute of Technology Bombay Mumbai400076 India Interdisciplinary Program in Climate Studies Indian Institute of Technology Bombay Mumbai400076 India

Drought is a recurrent phenomenon in the arid and semi-arid regions of Ethiopia. In the past two decades, millions of people are affected by drought throughout the country. To assess and monitor droughts, accurate rainfall record is crucial at different spatial and temporal scales. However, rain gauges are sparsely distributed across Ethiopia. To overcome this limitation, considering the high spatial resolution and longer period record of the Climate Hazard group Infrared Precipitation with Stations (CHIRPS) v2 satellite rainfall data, the same has been used as an input to Effective drought index (EDI) for drought monitoring in Ethiopia . The study has been carried out across the three different rainfall regimes of Ethiopia for the period from 1981 to 2016. The obtained results show that the historical drought years across rainfall regime of Ethiopia are well captured by EDI with CHIRPS rainfall product as input variable. Thus, highlighting the efficacy of EDI index and CHIRPS rainfall product for operational drought monitoring in Ethiopia. © 2017 ACRS. All rights reserved.

关键词： Drought

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Determination of retention basin and infiltration well zone for groundwater recharge using GIS-based approach: Case study: Bantaeng regency, South Sulawesi, Indonesia

Determination of retention basin and infiltration well zone ...

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2017 International Symposium on Geoinformatics, ISyG 2017

作者： Devianto, Luhur Akbar Suwarman, Rusmawan Rohman, Asep Iqbal, Rofiq Environmental Engineering Study Program Faculty of Agriculture Technology Brawijaya University Malang Indonesia Meteorology and Hydrogeology Department Faculty of Earth Science and Technology Bandung Institute of Technology Bandung Indonesia Bandung Education and Training Center for Geology Bandung Indonesia Environmental Engineering Study Program Faculty of Civil and Environmental Engineering Bandung Institute of Technology Bandung Indonesia

ISBN: (纸本)9781538616833

Currently, the biggest challenges of the Indonesian Government in water sector is the availability and quality of clean water. The causes of water vulnerability are land use change, rapid population growth, climate change, as well as residential and agricultural activities. In this study, GIS was utilized as tool for determining for retention basin and infiltration well zone as groundwater and surface water conservation. Several criteria were adapted from references such as SNI 03-2453-2002 and Maryland Storm water Design Manual. Several Thematic maps were developed which are slope between 8-30%;clay soil type;open space landuse as paddy field, moor, garden, etc. for developing retention basin zone. While infiltration well zone were needed thematic maps with water table elevation more than 3 m with rock permeability > 2 cm/hr that located outside of hazard zone as well as free of potential pollution as the criteria. Retention basin and infiltration well for aquifer recharge were studied in Bantaeng Regency using GIS tool. Several criteria were set up which allowed building six thematic map and resulting recommendation of retention basin zone as well as infiltration well zone. The results of retention basin zone potentially can be built in Uluere (12.99 km2), Eremerasa (14.19 km2), Sinoa (14.33 km2), and Tompobulu (18.22 km2) districts. While the infiltration well zone are within Eremerasa (20.22 km2) Tompobulu (40.68 km2) and Uluere (45.65 km2) districts. © 2017 IEEE.

关键词： Geographic information systems

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Application of fungi as bioflocculant for mine drainage treatment with extra high total suspended solid

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AIP Conference Proceedings 2020年第1期2245卷

作者： Reza Adhi Fajar Jayen Aris Kriswantoro Pingkan Aditiawati Lilik Eko Widodo Ahmad Baiquini Post Graduate Program in Mining Engineering ITB Ganesa 10 Bandung Indonesia Department of Civil and Mining Engineering Poliban Kayutangi Banjarmasin Indonesia Graduate Program in Biotechnology School of Life Sciences and Tech. ITB Ganesa 10 Bandung Indonesia Department of Microbiology School of Life Sciences and Technology ITB Ganesa 10 Bandung Indonesia Research Group for Earth Resources Exploration ITB Ganesa 10 Bandung Indonesia Senior Hydrogeology PT.BC Pemuda 40 Tanjung Redeb Berau Indonesia

Liquid waste with a high amount of total suspended solids (TSS) is one of the significant environmental issues from coal mining activities in Kalimantan island under high precipitation in of an extensive zone of coverage. The TSS concentration with Nano-sized particle in mine drainage is caused by clay minerals which are dominated by montmorillonite type. Therefore, a vast chemical agent is usually used to treat TSS concentrations of liquid waste less than 300 mg/L based on government regulation. However, in this case, the chemical flocculant triggers the onset of secondary pollutant because of carcinogenic and non-biodegradable conditions. This study aims to observe specific fungi, Marasmius sp, as bio-flocculant for the treatment of mine drainage with extra high TSS. The fungi can produce a biodegradable polymer that precipitate the montmorillonite with two-mode action, namely bio-flocculant polymerization and mycelial trapping. A role model was performed in a laboratory-scale less than 1 L in several graduated/measuring cylinders under 22-30 °C. The results of clarity and flocculation rate tests indicated that the minerals in the mine drainage samples from *** mining excavation area, had been precipitated rapidly. The clarity test by using spectrophotometer indicated that eighty six percent (86%) clarity value averagely in one-hour treatment, while the TSS concentration amount decreased down to 110.1 mg/L from original measured at 11,000 mg/L based on the flocculation rate test.

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Measurement model of good governance in government procurement

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IOP Conference Series: Materials Science and engineering 2019年第1期639卷

作者： T Chaitongrat N Leungbootnak W Kusonkhum W Deewong S Liwthaisong K Srinavin Faculty of Architecture Urban Design and Creative Arts Mahasarakham University Mahasarakham Thailand Department of civil engineering Faculty of Engineering Khon Kaen University Khon Kaen Thailand Civil Architecture Program Faculty of Technology Udon Thani Rajabhat University Thailand

This research aimed to develop competency factors for Good Governance in Government Procurement. The research adopted structural relationship models and is descriptive in nature. The research sample was drawn from 353 government sectors. The research tool was an expert questionnaire which had content validity and reliability of 0.986. The data was statistically analyzed by 1) exploratory factor analysis and 2) second-order confirmatory factor analysis. The research found that the model for the Good Governance in Government Procurement had high construct validity by both exploratory and confirmatory factor analysis. The model composed of 1 factor and 14 sub-factors from 15 selected variables.

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Assessing faculty and organizational change in a professional development program with workshops and disciplinary communities of practice 125

Assessing faculty and organizational change in a professiona...

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125th ASEE Annual Conference and Exposition

作者： Krause, Stephen J. Hjelmstad, Keith D. Judson, Eugene Middleton, James A. Culbertson, Robert J. Ankeny, Casey Jane Chen, Ying-Chih Ross, Lydia Mayled, Lindy Hamilton Hjelmstad, Kara L. Arizona State University Materials Science Program Fulton Schools of Engineering United States Department of Civil Engineering School of Sustainable Engineering and the Built Environment Arizona State University United States Mary Lou Fulton Teachers College Arizona State University United States Department of Mechanical and Aerospace Engineering Center for Research on Education in Science Mathematics Engineering and Technology Arizona State University United States Arizona State University Department of Physics United States Northwestern University Department of Instruction in Biomedical Engineering United States Arizona State University Division of Teacher Preparation Mary Lou Fulton Teachers College TempeAZ United States

To achieve more effective teaching and learning in undergraduate engineering education, professional development needs to promote change toward innovation of use of evidence-based instructional strategies (EBIS) in faculty beliefs and practice as well as change in organizational attitudes and norms. To develop an effective program, a strategy for change needs to be utilized and assessed at the individual level and the organizational level. Rogers Diffusion of Innovation (DOI) is an individual change model which consists of five steps of a progression towards any type of adoption of innovation change such as sports, business or teaching. The steps for adoption of change consist of awareness, interest, evaluation, trial, and adoption. Coburn's organizational innovation (COI) change model for organizations consists of four components necessary to support broader change in an educational organization, which include the following. Depth is deep change in faculty beliefs and practice. Sustainability of Innovation refers to flexibility of innovation in differing contexts or disciplines. Spread of Innovation refers to change in beliefs, norms, and principles of individuals across an organization. Shift of Ownership refers to shift in ownership from external facilitators to internal ownership by individuals and their organization. These change theories have been used to develop and assess a large scale NSF IUSE project at a large southwestern university called Just-in-Time-Teaching with Two Way Formative Feedback for Multiple Disciplines (JTFD). The first year of the project has trained 43 faculty in four disciplines using a train-the-trainer model with one semester of 8 biweekly workshops followed by a second semester of 6 disciplinary community of practice (CoP) discussion sessions. Assessment of elements of the two change theories was done with pre-post measurements of participants with surveys, questions and classroom observations. For the DOI model, Awareness of evidenc

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