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INDONESIA
Jurnal technoscientia
Published by Institut Sains dan Teknologi AKPRIND
ISSN : 19798415     EISSN : -     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
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Articles 11 Documents
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Search results for , issue "Academia Ista Vol 9 Edisi Khusus Oktober 2004" : 11 Documents clear
PENERAPAN FUNGSI PRODUKSI COBB-DOUGLAS GUNA MENGANALISIS PROSES TRANSFORMASI DALAM SISTEM PRODUKSI Sodikin, Imam; Sarsito, Bambang Mudo
JURNAL TEKNOLOGI TECHNOSCIENTIA Academia Ista Vol 9 Edisi Khusus Oktober 2004
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (314.374 KB) | DOI: 10.34151/technoscientia.v0i0.1881

Abstract

Simply production system can be described as a relation usher the input element, process and input. The element have to be supported with the feed back to control the system produce that to be able to improve the continuous repair. PT. Barata Indonesia in the early year 2003 was doing program to improve of output by performing variously repair of the task department. From the repair result will be was done by a measurement with to compare with the production process previous period. In this research, the method used is function produce of the Cobb-Douglas by using of software SPSS analysis. From data processing result, got an equation of linear regression which have transformed into function produce the following Cobb Douglas: For the year of 2002 equation is Q = 90,92.I10,75.I40,53 and for the year of 2003 Q = 79,04.I10,66.I40,39. Based of the result analyze by using the function produce the Cobb-Douglas have given is Return to scale ( RTS) with the value 1,28 for the year of 2002 and 1,05 for the year of 2003. Because value RTS > 1 so this matter is inferential that production process of two period known of the Increasing to Scale, meaning that proportion of factors of production, such as input will be increase the production the larger ones. While for the calculation of elasticity given the following value: Year 2002 raw material elasticity = 0,75%, meaning each every addition 1% raw material by use of constant machine man hours, product become will increase 0,75%, for the elasticity of use of machine man hours = 0,53% meaning each every accretion 1% machine man hours by use constant raw material, will increase the product addition become equal to 0,53%. Year 2003 raw material elasticity = 0,66%, meaning each every addition 1% raw material by use of constant machine man hours, product become will increase 0,66%, for the elasticity of use of machine man hours = 0,39% meaning each every accretion 1% machine man hours by use constant raw material, will increase the product addition become equal to 0,39%.
PENJADWALAN BATCH PADA SISTEM PRODUKSI JOB SHOP SINGLE ITEM MULTI Asih, Endang Widuri
JURNAL TEKNOLOGI TECHNOSCIENTIA Academia Ista Vol 9 Edisi Khusus Oktober 2004
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (291.533 KB) | DOI: 10.34151/technoscientia.v0i0.1884

Abstract

Peripatetic company in area manufacture will not get out of the that company ability to run its operation. Environmental problems optimation of manufacture usually hit the finite resource allocation of its amount in a few work area. With the certain criterion performance, the problems optimation is usually finished. One of form optimalitation in system manufacture is by scheduling existing production facility to finish some job. Two general criterion which often weared to evaluate the performance scheduling is makespan and flow time. At this research is conducted to compare the minimum makespan is by using overlapping method and without using overlapping method. Overlapping method is division of a number of part to be produced by multi stage into some batch in such a way that the batch can be parallelly processed. Batch scheduling by using overlapping method represent the optimal solution by minimation makespan. Total the optimal batch as much 2. Makespan got is equal to 148745,08 minute, smaller than makespan got without using overlapping method that is equal to 152000 minute. Big of time thrift is equal to 2,14%.
PENGARUH CAHAYA,TEMPERATUR DAN SHIFT KERJA TERHADAP KINERJA OPERATOR Simanjuntak, Risma Adelina; Christy, Nikolaus
JURNAL TEKNOLOGI TECHNOSCIENTIA Academia Ista Vol 9 Edisi Khusus Oktober 2004
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (271.355 KB) | DOI: 10.34151/technoscientia.v0i0.1885

Abstract

The result from operator worked was influenced by various existing system. This condition is not quit from the condition of physical environment work around operator and indirectly influence result of human being performance / the operator. This condition will be happened at one particular work which is needing high concentration and yield optimal performance time. Therefore this research purposes and objectives is to analyse the influence between light, work shift and temperature either through individual and or simultan. This research is done in soundproof space so the operator can yielding the optimal output. Pursuant to result of analysis with factorial experiment, ANOVA, 3 factor, test T, Test F which have known that having influence to operator performance is light, temperature, and work shift either through individual and or simultan with mistake storey level : 5 % shown with f value (count) > F( tables). Result of this research depict about yielded ability storey; level by human being in working which is resulted by the existence of third factor which is treatment was tested.the three condition which has been tested give conclusion that yielding optimal in working is light 170 Lux.,Temperatur 30-32 0 C, and shift work morning.
MENGHITUNG TINGKAT PRODUKTIVITAS TOTAL DALAM UPAYA MENINGKATKAN DAYA SAING PERUSAHAAN Parwati, Indri
JURNAL TEKNOLOGI TECHNOSCIENTIA Academia Ista Vol 9 Edisi Khusus Oktober 2004
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (277.657 KB) | DOI: 10.34151/technoscientia.v0i0.1886

Abstract

Tourism is a kind sector that can make increase of devisa and promotion to other country. A support factor for tourism to enjoy their facation is hotel’s industry. TRIM III Hotel need to do productivity calculating as base planning to increasing productivity in future. To calculating productivity in TRIM III Hotel using OMAX method, Marvin E. Mundhel, and Kendrick and D. Creamer. Based on calculating result by OMAX method gotten the higgest attainment indicator value at March 2005 equal to 737,71 % with increase to early period equal to 145,90 % and experiencing increase of productivity to previous period equal to 50,14 %, while the lowest attainment indicator at October 2004 equal to 227,05 % with decrease of productivity to previous period equal to 24,32 % and experiencing decrease of productivity to previous period equal to 55,57 %. By use Marvin E. Mundhel method the higgest productivity index’s value at April 2004 equal to 109,16 % with increase of productivity equal to 9,75% to previous period and the lowest productivity index value at October 2005 equal to 72,34 % with decrease of productivity equal to 13,14 % to previous period. Kendrick and D. Creamer method the higgest productivity index’s value at April 2004 equal to 154,88 % with increase of productivity equal to 18,35 % to previous period and the lowest productivity index’s value at October 2005 equal to 106,45 % with decrease of productivity equal to 22,81 to previous period.
PELAPISAN NIKEL PADA PELAT TEMBAGA DENGAN WAKTU 5, 10 DAN 15 MENIT DAN KOMPOSISI NIKEL KLORID 50 GRAM, 60 GRAM DAN 70 GRAM Waluyo, Joko; Huda, Saiful; wuryanto, Toto Sri
JURNAL TEKNOLOGI TECHNOSCIENTIA Academia Ista Vol 9 Edisi Khusus Oktober 2004
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v0i0.1888

Abstract

Electroplating is plating of metal on the metal or something has conductor charateristic by aiding direct current (DC) of electricity in the electrolyte solution function as metal ions solvent media, so it gives performance and smoothness that is interesting on the metal surface. The aim of this research is to know the plating result quality by using the difference chloride nickel composition. The are 50 gramn 60 gram and 70 gran of NiCL with plating duration 5 minutes, 10 minutes and 15 minutes, on the material with dimension 100 mmx70mm with thickness 3 mm. Plating process is done in the trapezium solution reservoir tank or called by Hull Cell. The result of this research is obtained that the best composition is 70 gran NiCl, with 15 A/dm2 current dense and with 15 minutes plating duration, the highest hardness value= 188.5 VHN and the lowest = 71.1 VHN, the highgest thicknees = 53.84 µm and the lowest = 3.07 µm, the best fltnees with value of Ra= 0.0573 µm, Rz = 0.400 µm and R max = 0.4500 µm and the worst flatness with the value of Ra = 0.4723 µm, Rz = 3.8250 µm and R max = 4.500 µm whereas the highest result glossy result = 72 % and the lowest = 33 %.
IMPLEMENTASI QUALITY FUNCTION DEPLOYMENT (QFD) UNTUK PENCEGAHAN KEGAGALAN PRODUKSI DRUM MINYAK PELUMAS di PT. X Waluyo, Joko; Purwanto, Adi; S, Achmad Taufiq
JURNAL TEKNOLOGI TECHNOSCIENTIA Academia Ista Vol 9 Edisi Khusus Oktober 2004
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (209.013 KB) | DOI: 10.34151/technoscientia.v0i0.1889

Abstract

Quality Function Deployment is a process to translate the costumer needs into gathering of product specification, the technique or the way to choose combination of product attributes in direction to maximize costumer satisfaction will be finish with a method or an idea. The relationship between needs and size (volume) that guarantee all of costumer needs has been measure are made into the matrix. This matrix is the keywords that used on the house of quality. This research focused on Quality Function Deployment to search the failure cause that happened as the compentation between procees of production. Grouping failure choose the one that caused the biggest failure based on the research and then we try to solve the problem. The result of QFD and HOQ describes that priority based on the highest raw weight is the” price attribute” with nominal result 7.06, besides that the attribute of “importance to costumer” are on the deliver/dispatch precisely with nominal result 3.00. The highest “costumer satisfaction” attribute is on the paint guarantee with the nominal result 2.91. The company highest priority to realize is the paint guarantee with the sales point nominal 1.5, raw weight nominal 5.65, improvement ratio nominal 1.37, and costumer satisfaction nominal 2.91 with the goal nominal 4. On the second diagram, componen deployment matrix with the highest “design implementation weight” are sorting the type of paint with nominal 880,08 and relative weight nominal 21,81%.
HUBUNGAN ANTARA NOMOR FERIT DENGAN LAJU KOROSI PADA BAJA TAHAN KARAT AUSTENITIK DALAM KONDISI AS CAST DAN AS WELD Huda, Saiful
JURNAL TEKNOLOGI TECHNOSCIENTIA Academia Ista Vol 9 Edisi Khusus Oktober 2004
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (431.768 KB) | DOI: 10.34151/technoscientia.v0i0.1890

Abstract

Austenitic stainless steel has superior characteristic in corrosion resistance, but it tends to crack when welded. To prevent the crack during the welding, Cr equivalent can be increased to produce fasa ferit in austenitic metric. Austenitic stainless steel containing minimum 4% of ferit will avoid weld cracking; however, it will decrease the corrosion resistance. The aim of this research is to know the corrosion rate of austenitic stainless steel with different ferit content in the as cast and as weld conditions. The different content of ferit is obtained in two ways. First, in as cast condition it is obtained by choosing 3 different materials with different chemical compound. Cr equivalent and Ni equivalent are calculated so that by using Schaeffer diagram the ferit content in the main metal ( austenitic steel) can be identified that is ferit number 7, 9, and 10.The second way is obtained through the welding process using different electrode for different main metal. By taking 20% of the delusion, austenitic stainless steel containing ferit number 6,8,and 9 is obtained. Corrosion rate, tensile strength, and impact tests are done on these six materials. The findings show that in the same ferit number, as weld stainless steel is more corrosive and the impact strength is much lower than that of as cast. Meanwhile, in the same material(as weld as well as as cast) the bigger the ferit number the more the corrosion and the lower the tensile strength and the impact are.
JALUR INSTALASI LISTRIK SEBAGAI SISTEM TRANSMISI SINYAL AUDIO Pambudi, Prastyono Eko
JURNAL TEKNOLOGI TECHNOSCIENTIA Academia Ista Vol 9 Edisi Khusus Oktober 2004
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (164.833 KB) | DOI: 10.34151/technoscientia.v0i0.1892

Abstract

Audio frequency represent an vibration voice which can be heard by human being, generally an completed system will contain a transmission with the information which transmission and a receiver yielding a replica or copy of input information released. In communications system which information transmission very relate to the modulation or time change of certain signal sinusoidal named by signal carrier. With a designing to develop the electronics apparatus which not expected complicated of installation of house electrics can be exploited for as media of transmission of signal audio from an peripheral to other peripheral. This matter cause the speaker not need the other, dissimilar transmission cables which long enough so that seen regular and natty.
APLIKASI PENGUBAH DAYA TEGANGAN DC KE AC BERBASIS TRANSFORMATOR NON CT DAN TRANSISTOR MOSFET Pambudi, Prastyono Eko
JURNAL TEKNOLOGI TECHNOSCIENTIA Academia Ista Vol 9 Edisi Khusus Oktober 2004
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (314.374 KB) | DOI: 10.34151/technoscientia.v0i0.1896

Abstract

Distorting of energy of tension DC to AC used to support the social life of society. There by will arise an problems form of electric current from PLN desisted sudden and long time. The problems of course can be disregarded with the installation of power plant byself like generator AC or use the accumulator. Using of transistor energy of type MOSFET also used especially at final of switching showing optimal performance. This matter is showing with the temperature speed which relative lower and ideal performance temperature stability. The result of comparison of output power and efficiency of changer of energy of tension DC to AC with the transformator non-CT indicate that the appliance can only work 90% from maximal appliance ability. This problems because of accumulator use ably small current or standart.
PENGARUH PEMAKAIAN ALAT PENGHEMAT BAHAN BAKAR POWER X TERHADAP PERFORMANCE MOTOR DIESEL -, Sudarsono
JURNAL TEKNOLOGI TECHNOSCIENTIA Academia Ista Vol 9 Edisi Khusus Oktober 2004
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (450.566 KB) | DOI: 10.34151/technoscientia.v0i0.1897

Abstract

The performance of combustion engine of torak can be seen from torque, break power, , the break mean effective pressure, fuel consumption, specific fuel consumption, AFR and efficiency produced. The research discusses the effect of fuel saving consumption “Power X” to the performance of diesel motor. The research used speed average such as 1600, 1950, 2300, 2650, 3000 Rpm. The result showed that the use of Power X caused torque increased 3,160782 Nm or 2,72%, power increased 0,7613 kW or 2,74%, effective pressure increased 18,3622 kPa or 2.73%. Fuel consumption decreased 0,3572 gr/second or 14,34 %, specific fuel consumption decreased 0,01516 mg/joule or 16,83%. Ratio between air and fuel increased 1,8476 or 14,67%. Thermal efficiency increased 0,05102 or 20,19 %.

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