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Journal of Dynamics
ISSN : -     EISSN : 25020692     DOI : -
Core Subject : Engineering,
The International Journal of Dynamics in Engineering and Sciences (IJDES) is a fully refereed international journal, which publishes original research papers and survey articles in all subjects relevant to dynamics in engineering, sciences and analytical and numerical solution. The highest priority will be given to those contributions which discuss practical problems, the establishment of dynamic models, the determination of a solution, approximate or exact, analytical or numerical development of the results to the real-life problems. Manuscripts which discuss new analytical techniques for new dynamics in engineering and sciences problems in different fields of science and engineering are also encouraged.
Arjuna Subject : -
Articles 22 Documents
Design of 3D Animation Application on STIKOM Dinamika Bangsa Jambi Rico, Rico; Benny, Benny
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Publisher : Kopertis Wilayah X

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Abstract

The 3D animation is a 3D visualization or a 3D animated video that embodies the idea visually to solve a problem that suits the needs. In the current development of 3D animation can be used for as a medium to create a graphic design of a building for promotional purposes and so forth. Regarding the promotion or introduction, STIKOM Dinamika Bangsa Jambi campus has not implemented 3D animation and still uses manual way through presentation, and photographs about facilities and infrastructure facilities contained in STIKOM Dinamika Bangsa Jambi, so there are still many people do not know the facilities Found on STIKOM Dinamika Bangsa Jambi. Therefore, in this research will be built a 3D animation application that is useful to explore all areas and facilities that are found in STIKOM Dinamika Bangsa Jambi.
Visualization of West Sumatra Ocean Surface Based on Topex/Poseidon, Jason-1 and Jason-2 Sattelites Data Khasanah, Isna Uswatun
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Publisher : Kopertis Wilayah X

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Abstract

This research attempts to monitor West Sumatra ocean surface based on data from satellite altimetry. Altimetry satellite data used is the Sea Surface Height (SSH) Data and Sea Level Anomaly (SLA). Satellite altimetry data processing are complex, include post processing, disposal of data mainland and an empty data as well as the disposal of data outliers. In this study, the global test used has a 99% level of confidence of the data. The quality of the data where the sea surface waters of West Sumatra of multi-satellite altimetry has a good quality of about 90%. Value SSH waters of West Sumatra after correction of missing data and data residing on the mainland ranging between -37 to -7 m. Geoid undulation value EGM96 West Sumatra ranged between -36 to 9. While the value of the SLA in the waters of West Sumatra ranged from -5.5 to 6 m.
Ground Water Quality Analysis in the Coastal of Bengkalis City Using Geochemistry Approach Mairizki, Fitri; Cahyaningsih, Catur
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Publisher : Kopertis Wilayah X

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Abstract

Disproportion between supply and demand of clean water is a complex problem in water management, especially in the coastal of Bengkalis city. Water scarcity occurs in different parts of the region accompanied by bad quality of ground water. Therefore, it is necessary to study the potential of groundwater as clean water and drinking water using geochemistry approach. Groundwater samples obtained from wells and wells drilled in Bantan Tua village, Bengkalis district, Riau. Most groundwater samples did not meet the requirements of clean water and drinking water based on Permenkes 492/Menkes/Per/IV/2010 in terms of physical and chemical parameters with temperatures ranging from 26-29oC, turbidity 5- >100 NTU, TDS 0-30,5 mg/L, pH 4,05–7,40, Cd 0,001-0,011 mg/L, Mn 0,020–1,775 mg/L, Fe 0,291–17,100 mg/L, Cu 0,000–0,095 mg/L, Cr < 0,05 mg/L, hardness 19,669–560,184 mg/L, SO42- < 25 mg/L, NO3- 17,96–220,6 mg/L, NH4+ 0,00–3,21 mg/L, F- < 0,10– 0,13 mg/L dan Cl- 0,2–71,8 mg/ L. The  groundwater in this study was dominated by non carbonate in form of  Na+K indicates that the facies of groundwater aquifers was influenced by seawater with clay lithology and illite mineralogy. The genesis of origin rocks derived from weathering igneous rock which rich in plagioclase and feldspar minerals.
The Development and Verification of Two Time Domain Identification Algorithms Using Scientific Python Ecosystem – The Free Vibration Problems Adriyan, Adriyan
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Publisher : Kopertis Wilayah X

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Abstract

This research presented a study for verification the performance and the effectivity of identification program for modal parameters identification. The identification program was written in scientific python ecosystem by implementing Ibrahim Time Domain (ITD) and Eigensystem Realization Algorithm (ERA) method. A cantilever beam with three additional lumped masses was used as the structure under test (SUT). The SUT was modeled to produce numerically simulated responses and tested to obtain experimentally recorded responses. Especially in the first stage, the numerically simulated response was corrupted with white noise with a signal to noise ratio of 12.04 dB to imitate real vibration responses. Then, the performance was marked by capabilities to identify consecutive stable modes for every increment of model order in both stages. Both time domain method presented well those capabilities in the identification process. Hence, it can be concluded that the program can identify well even in high noise contamination in the responses and real vibration data using laboratory test scale.
Design and Manufacturing of LPG Gas Leak Detector in The Kitchen Arif, Muhammad
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Publisher : Kopertis Wilayah X

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Abstract

How to detect a gas leak is by using an early detection to prevent the occurrence of unwanted conditions. Detector as a gas leak detector can be applied to reduce the incidence of unwanted conditions such as explosion and fire that can result material losses, even death. The most common cause of the leak gas cylinders is corrosion in the gas cylinder, hose and its regulator. However, another cause is forced modification that can create accessories damage such as hose, valve, and regulator. Based on above conditions, additional effort is needed to maintain fire accident due to gas leak from cooking device that uses gas to cook in the kitchen or housing residents. Therefore, there was an action to design a leak gas detector ergonomically, effectively, and efficiently. From its function, detector can react 6 seconds if the position is above of regulator, and 9 seconds if placed on the above of stove at 35 cm distances. After the designed detector is completed and also tested, then detector was able to detect the occurrence of leak gas and it is useful to be used by the public.
Estimation of the Manufacturing Product Complexity Based on the Product Information on Turning Process Product Romiyadi, Romiyadi; Azriadi, Emon
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Publisher : Kopertis Wilayah X

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Abstract

Product complexity index was an indicator of a manufacturing product that describes the products are designed and manufactured with a level of complexity. In this study, assesment of product complexity was conducted on milling processing product. Assesment conducted on the variable of turning processing product complexity based on features of the products and specifications of materials, shapes, geometry, tolerance, general surface finish and hardness. ElMaraghy introduced the method in this study and Urbanic based on information product were absolute quantity information, diversity of information, and content of product information. The results of product complexity assesment indicated that the product of original External Thread Bearing Housing had product complexity index of 6.28. While the results of product complexity assesment indicated that, the product of redesign External Thread Bearing Housing had product complexity index of 8.96.
Hydrology Analysis and Rainwater Harversting Effectiveness as an Alternative to Face Water Crisis in Bantan Tua Village Bengkalis District-Riau Cahyaningsih, Catur
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Publisher : Kopertis Wilayah X

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Abstract

Home residence around Bantan Tua Village, Batan Subdistrict, Bengkalis District, Riau Province, have a tub for Rain Water Harvesting (PPAH), to collect and store water when rain come for cooking and drinking purposes. PPAH tub at home residence has a variety of sizes. There is a tub that size is too large and too small. PPAH tub volume size must be adapted to the rainfall data to be able need supply for community. The fundamental problem is that most people do not know the effective size PPAH tub to accommodate the abundance of rainfall harvesting because limited rainfall data information and the using of formulas hydrology calculation. Based on rainfall data in Bengkalis 2014, the average runoff of rain water per month is 141.5 mm. Houses the size of 8 x 10 m, which is the dominant type of house in Bengkalis, the ideal amount of rainwater collected in each house is 1920 m2 / month. While water demand required by equating averaged, the house is a consisting of four members is 3600m3 / month. End of month, volume of tub has deficiency is 1600m3. Recommendation of effective PPAH tube is 1500 liters, based on data rainwater runoff per month.
Interactive Multimedia CD Design Chemistry Lesson In Concept Training Material and amendment For Class X Vocational High School (SMK) Wijaya, Indra; Sefriani, Rini
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Publisher : Kopertis Wilayah X

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Abstract

This research aims to create  Multimedia Interactive CD that helps for students in the learning process, especially in learning Chemistry. This research was conducted in subjects with material chemistry concept of matter and its changes. This research is R & D (research and development). Multimedia  interkatif CD later will be tested to the students of class X Vocational High School .Instrumen used in collecting data in the form questionnaire, with Likert scale with respondents Vocational High School students from several schools. The data were analyzed using Microsoft Excel 2007. Based on the research that has been done, the obtained to display multimedia interactive CD rhitung value = 0.49 and compared with r kritis, = 0.3 the display of multimedia interactive CD declared valid, and for ease of navigation CD Multimedia interactive rhitung value = 0.48 and compared with rkritis, = 0.3  the ease of navigation interactive multimedia CD declared valid, and for aspects of Multimedia rhitung value = 0.58 and compared with rkritis, = 0.3 and Multimedia aspects declared valid,for the media  learning the value of rhitung = 0.50 and compared with rkritis, = 0.3 and the media to learn declared valid, thus Multimedia interktif CD Chemistry is feasible to be used as an additional medium / aids in teaching Chemistry for class X Vocational High School.
Feasibility Test of Refill Drinking Water in Batam Hazimah, Hazimah; Triwuri, Nurlinda Ayu
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Publisher : Kopertis Wilayah X

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Abstract

According to the Regulation of the Minister of Health No.492 Year 2010, drinking water quality is assessed from the chemistry parameters, one of them is aluminium (Al), iron (Fe), kloride (Cl) and copper (Cu), it should meet the standards that have been defined. The aim of this research is to find out the quality of refill drinking water in Batam with indicator aluminium (Al), iron (Fe), kloride (Cl) and copper (Cu). The research was conducted in the laboratory of PT. Sucofindo Batam, Riau Islands-Indonesia. The type of this research is laboratory descriptive. Data was obtained by using simple randomized sampling technique. Aluminium (Al), iron (Fe), cloride (Cl) and copper (Cu) research of drinking water used Standart Methods for Water and Waste Water American Public Health Assosiation, 22nd eddition 201. The result of this research showed that all six samples meet the qualification of the Regulation of the Minister of Health No.492 Year 2010 by chemistry parameters of Aluminium (Al), iron (Fe), cloride (Cl) and copper (Cu).
A Critical Review of Value Engineering Development in Indonesian Construction Industry Sesmiwati, Sesmiwati; Utama, Wahyudi Putra; Roza, Fielda
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Publisher : Kopertis Wilayah X

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Abstract

Instead of Value Management (VM,) term of Value Engineering (VE) in Indonesia has been known over three decades. So far, there seems to be scanty attention, if any, from academia to summarize and review practical application of VE, particularly in construction industry. This paper, therefore, attempts to encapsulate and critically review the extant of VE application in Indonesian construction industry. The review presents the development of VE, identifies the opportunities and challenges and proposes new direction for future development. Both document searching technique and literature review were undertaken to find and view the existence of the methodology. It can be said that the practical application of VE in Indonesian construction projects is running in place. Four shortfall issues contributing to this patency were identified comprising lack of regulation, promotion, knowledge and expertise. Nevertheless, there are still big opportunities to echo and develop this methodology. 

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