Politeknosains http://jurnal.politama.ac.id/index.php/jp <p>Jurnal Teknik Politeknik Pratama Mulia</p> Politeknik Pratama Mulia Surakarta en-US Politeknosains 1829-6181 <p><strong><span style="text-decoration: underline;">Authors who publish with this journal agree to the following terms:</span></strong></p> <ul> <li style="text-align: justify;">Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.</li> <li style="text-align: justify;">Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.</li> <li style="text-align: justify;">Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).</li> </ul> EVA SEBAGAI ALTERNATIF PENGUKURAN KINERJA MANAJEMEN http://jurnal.politama.ac.id/index.php/jp/article/view/250 <p>This paper reviews the concept of EVA as a tool of management<br>performance measurement. EVA based to concept that management<br>objective is creating value for shareholder. With EVA, management has to<br>be selective in identifying and chooses value added activity and minimizing<br>non value added activities. EVAis the Adjusted Net Operating Tax After Tax<br>(NOPAT) for a period minus the capital charge of the investment over that<br>period. Management called create value for shareholder when EVApositive<br>and destroyed value when EVAnegative. EVA also applied as management<br>based incentives compensation. The idea that management will be given<br>more bonus or incentives when their action or strategies maximize<br>shareholders wealth by increasing EVA. Study about EVA still debatable.<br>Many research done to test which measurement that is most precise,<br>accurate and most compatible applied in measuring management<br>performance. Even a lot supports to EVA, there’s critics about EVAtoo. <br>Keyword: economic value added, value added activities,management<br>compensation.</p> Sri Yuliati Huriyah Huriyah ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 2012-03-01 2012-03-01 11 1 18 30 BUDIDAYA TANAMAN BUAH SALAH SATU ALTERNATIF REHABILITASI LAHAN KRITIS DAN MENINGKATKAN KESEJAHTERAAN PETANI http://jurnal.politama.ac.id/index.php/jp/article/view/251 <p>From so much kinds of fruits in Indonesia, therefore to rehabilitate<br>crisis area than can gives advantageous economically which at last gives<br>prosperity to the farmers.<br>The farmers must choose fruit plant correctly, that is :<br>The fruits those are liked by the consumens although they are difficult to<br>find the lovest fruits but infact looked for by them.<br>To get maximal production must be begun by true plantation fruit<br>plants, included in the way to plant and the way to keep it, those are :<br>clipping, fertilizing, irrigation, desease domination and germ with together<br>how to harvest and fruits management in harvest time.<br>A kind of excellent fruit has some characteristics, such as :<br>a. The production is highest than the same fruit plant<br>b. The duration is younger relative fast to bear fruit<br>c. The fruit plant proof against from desease<br>d. The delicious of fragrance fruit and its taste are more average of<br>the other fruits<br>e. The shape of the size and the fruit’s colour are similar so become<br>export potention.</p> Nugroho Nugroho ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 2012-03-01 2012-03-01 11 1 31 40 ANALISIS PENERIMAAN PAJAK BUMI DAN BANGUNAN DI KANTOR PELAYANAN PAJAK PRATAMA SURAKARTA TAHUN 2008-2010 http://jurnal.politama.ac.id/index.php/jp/article/view/252 <p>Land and Building Tax is included in the taxes that contributed as a<br>source of State revenues, to finance national development and the potential<br>revenue. Tax is also the backbone of Income and Expenditure Budget<br>(APBN). The purpose of this study is to determine and perform an analysis<br>of the rate of increase or decrease the target and the realized revenue Land<br>and Building Tax years 2008-2010 in the Tax Office Pratama Surakarta<br>(KPP Pratama Surakarta). The types of data used in research is the primary<br>data and secondary data, with data collection methods: interviews,<br>observation, and literature study. While the method of analysis used in this<br>research is the analysis of qualitative data and quantitative data analysis.<br>Based on analysis performed by the writer can be seen that the PBB target<br>and realized revenue in the year 2008-2010 in the KPP Pratama Surakarta<br>is experiencing fluctuations, there is rising and there is a down. PBB year<br>revenue target of 2008-2010 the lowest was in 2008 and highest in 2009.<br>For the realized revenue from the year 2008-2010 the PBB the lowest in<br>2008 and highest in 2010. Determination of revenue targets PBB are based<br>on realized revenue PBB the previous year. Reception PBB at KPP Pratama<br>Surakarta in 2008 and 2009 can not exceed the set targets, but revenues the<br>PBB in 2010 may exceed the target set. Although the revenues the PBB in<br>KPP Pratama Surakarta in 2008 and 2009 can not exceed the set targets,<br>but the rate of revenues the PBB from 2008 to 2010 has increased<br>continuously with the base year of 2008. The increase and decrease in<br>revenues was caused by the PBB land values, increase in the intensification<br>of the PBB, and result of rectification of land and buildings. With the<br>explain the increase and decrease in revenues the PBB, KPP Pratama<br>Surakarta then made attempts through the socialization of taxation, Last<br>week the PBB Role Model socialization, active billing and Operation<br>Comb. It is hoped these efforts can be realized with the better and the Tax<br>Payer has the consciousness to fulfill their obligations so as to increase the<br>revenues the PBB in KPP Pratama Surakarta.<br>Keywords: Land and Building Tax</p> Legowo Dwi Resihono ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 2012-03-01 2012-03-01 11 1 41 54 PEMANFAATAN APLIKASI MULTIMEDIA SEBAGAI SARANA PENYEBARLUASAN INFORMASI DAN PROMOSI http://jurnal.politama.ac.id/index.php/jp/article/view/253 <p>Multimedia comes from the word "multi" and "media". Multi means<br>many, so that multimedia can be defined as a composite of a variety of<br>integrated media. Combination of various media are to be harmonized and<br>integrated so as to produce an application with a variety of purposes.<br>Multimedia applications through user interaction can be said to be divided<br>into two types, namely static applications and applications that are<br>interactive. In the static version of the user is only able to enjoy any<br>multimedia show presented, such as movies and multimedia presentations.<br>While in the interactive version, the user can interact with the following<br>instructions on the application. Besides interactive version can be two-way<br>means of communication is very effective.<br>Development of communications infrastructure technology also helps<br>media deployment of multimedia applications, in addition to offline media,<br>which is known as CD, DVD or BlueRay. By utilizing the communication<br>line such as LAN or the Internet, applications can be used as a promotional<br>dissemination of effective products. In the interactive multimedia<br>application infrastructure can be used as collaboration tool.<br>For Education multimedia service can be used as a means for<br>disseminating information on the students and the public service to<br>determine the extent of development of the institution. By taking advantage<br>of infrastructure that has been mentioned above, the dissemination of<br>information, college / higher education can be presented either static<br>version (offline) as well as interactive.<br>This paper outlines the use of multimedia as a means of information<br>dissemination and promotion of the concept of the development,<br>implementation, obstacles, and challenges faced.<br>keyword<br>Key words: Multimedia Interactive, educational information, promotions</p> Didik Warasto ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 2012-03-01 2012-03-01 11 1 55 63 PENGARUH METODE PENDINGINAN PADA PERLAKUAN PANAS PASCA PENGELASAN TERHADAP KARAKTERISTIK SAMBUNGAN LAS LOGAM BERBEDA ANTARA BAJA KARBON RENDAH SS 400 DENGAN BAJA TAHAN KARAT AUSTENITIK AISI 304 http://jurnal.politama.ac.id/index.php/jp/article/view/254 <p>The dissimilar metal welding between SS 400 low carbon steel and AISI<br>304 austenitic stainless steel had a problem where chromium carbide<br>(Cr23C6) was formed on the grain boundary region of HAZ austenitic<br>stainless steel. As we know, the fact that chromium carbide will decreased<br>the corrosion resistant on austenitic stainless steel, so we have to<br>minimized the forming of chromium carbide.<br>Gas Metal Arc Welding (GMAW) was used to joint the base metal. Post<br>weld heat treatment temperature was carried out at 1100 <br>0<br>C with 1 hour<br>holding time. Water cooling, oil cooling, and air cooling was used for the<br>cooling methods. While for the corrosion test carried out based on ASTM A<br>262.93a (Practice B) and ASTM G1.90 (Practice C 7.5) standard.<br>Generally, post weld heat treatment on austenitic stainless steel could<br>increase the corrosion resistant. The highest corrosion resistant was found<br>on the water cooling method. In the corrosion test within 88 hours, it was<br>found that the decrease of average corrosion rate on the water cooling<br>method was 27.88 % slower than average corrosion rate without specific<br>treatment. While the decrease of average corrosion rate on the oil cooling<br>method and air cooling method were 18.31 % and 8.16 % respectively<br>slower than average corrosion rate without specific treatment.<br><strong>Keywords</strong> : chromuim carbide, post weld heat treatment, the cooling<br>method</p> Achmad Nurhidayat ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 2012-03-01 2012-03-01 11 1 64 78 PENGARUH PUTARAN MESIN DAN BAHAN BAKAR TERHADAP KAPASITAS POMPA http://jurnal.politama.ac.id/index.php/jp/article/view/255 <p>The obyective of this research is to investigate the effect af the consumsing<br>at different fuel to the pump capasity. The used fuel are premium and<br>petrolium. The analisyses used in this research, are factorial analisys, BNT<br>analisys and regresion analisys. The factorial analisys does not show<br>significant effect to the pump capacity. But, the BNT and regresion<br>analisyses have significant an the effect of the pump capacity.<br>Keywords: <em>Faktorial analyze, smallest different fact analyze, regress analyze</em></p> Sugiyanto Sugiyanto ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 2012-03-01 2012-03-01 11 1 79 86 PENGARUH SUHU LARUTAN ELEKTROLIT DAN WAKTU PELAPISAN TEMBAGA PADA PLAT BAJA LUNAK TERHADAP NILAI KETEBALAN http://jurnal.politama.ac.id/index.php/jp/article/view/256 <p>Effect of solution temperature and time parameters of copper coating<br>on mild steel plate of the thickness of the electroplating process studies will<br>be needed to get maximum results. The method used is an experimental<br>method to perform the test specimen with the thickness of the coating<br>parameters menvariasikan 5, 10 and 15 minutes at a voltage of 9 volts.<br>Meanwhile, the temperature in the coating process is varied in conditions<br>of 45o, 55o and 65o Celsius.<br>Temperature and time parameters of the coating solution used for<br>copper plating process will affect the results in terms of quantity, wherein<br>the coating the longer time and higher temperatures are used then it will be<br>even thicker layer formed.<br>From the obtained results of tests performed best at 65o Celsius<br>temperature condition coating with coating time of 15 minutes at a voltage<br>of 9 volts, the results obtained 16.4940 μm layer thickness.<br><strong>Keywords</strong>: Electroplating, temperature, time and thickness.</p> B a s m a l B a s m a l ##submission.copyrightStatement## 2012-03-01 2012-03-01 11 1 87 98 PENGARUH KUAT ARUS PROSES PELAPISAN NIKEL TERHADAP LAJU MASA http://jurnal.politama.ac.id/index.php/jp/article/view/257 <p>Electroplating is a process of deposition of substances (metal ions) on the <br>electrode (cathode) by means of electrolysis. There was a precipitate in this<br>process is due to an electricity were charged ions move from one electrode <br>through the electrolyte, the results of these elektrlit will mengedap on the <br>other electrode (negative / cathode).<br>Based on existing research results and also discusses the basic theory <br>about the theory of the metal coating of the title of the research to be <br>undertaken can be taken as the following hypothesis: The greater the <br>current that flows stronger it will get heavy pelpisan (a substance that is <br>formed will be higher).<br>The parameters that affect the quality of nickel plating, are: Concentration <br>Dengah solution pH from 1.5 to 5.2, Meeting of the electric current flows <br>which is the number needed to obtain the metal atoms per unit area on the <br>surface of the workpiece to be coated. Temperature and time of the coating <br>will affect the quantity of coating results that occur on the surface of the <br>coated product.<br>Keywords: electroplating, nickel</p> Sugiyarta Sugiyarta ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 2012-03-01 2012-03-01 11 1 99 106 KEKUATAN TARIK DAN GESER DENGAN PENGELASAN RESISTANCE SPOT WELDING (RSW) ANTARA BAJA KARBON RENDAH DENGAN ALUMINIUM http://jurnal.politama.ac.id/index.php/jp/article/view/258 <p>This study aims to determine the mechanical properties of the image area<br>of a welded connection of two different metals. Resistant Welding Spot<br>Welding method. In this welding jointing material is low carbon steel SS<br>400 with a 1 mm thick aluminum 6061 TI 2 mm and were given assistance<br>filler powder between steel and aluminum alloys (Fe - 10% Al). Welding<br>performed on two samples with the welding time and voltage output 5<br>seconds each - each 2.02 volt and 2.30 volt. Tests carried out by tensileshear testing machine, tension and metallographic cross. The test results<br>showed for tensile shear test on the output voltage of 2.30 volts and 843<br>MPa for 2.02 volt output voltage of 830 MPa. Was to test tensile (cross<br>tension) respectively - each amounting to 434 MPa and 6 MPa. Further to<br>the metallographic photos with the same time and the higher the load<br>voltage shows the union between a low carbon steel with a bridged<br>aluminum filler, the better.<br>Keyword, Las points, low carbon steel and aluminum, filler, tensile test -shear, cross tension and metallography.</p> Salim Salim Triyono Triyono ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 2012-03-01 2012-03-01 11 1 107 116 PENGARUH PENAMBAHAN CUPPER RADIATOR PADA MOBIL HUBUNGANNYA DENGAN TINGKAT PERUBAHAN SUHU ENGINE DAN PEMAKAIAN BAHAN BAKAR http://jurnal.politama.ac.id/index.php/jp/article/view/259 <p>Cars are a set of pipes, cables and other parts arranged in such a<br>way that it becomes a vehicle for people who a lot of benefits for a variety<br>of human needs, then made a wide range of vehicles that are tailored to<br>the demands of human need.Thus, the cars on the market currently consists<br>of various models that have the appearance and the cost of making a<br>different, but in all modes of modern cars have the same working principle,<br>not attached to theform or model of car in question.<br>Quality of work of the car is affected by factors such as: cooling<br>system, ignition system, lubrication system, engine temperature, fuel<br>delivery systems, Tune-up, fuel conditions, ignition setting, the conditions<br>of compression and combustion conditions and outside air<br>temperature.<br>The present era is a lot of vehicles that use a radiator Cupper to<br>collect exhaled air by the rotation of the fan so that the cooling water in the<br>radiator fins can be perfect, so that the working temperature of the engine<br>is stable. Use of Cuper radiator function also helps to keep the temperature<br>of the engine work is not over heating or over cooling, because the overheating occurs due to excessive heat caused the motor if the cooling system<br>is not working properly, over-heating resulting in decreased motor power<br>and motor components easily damaged, so it will result in its wasteful fuel,<br>over-cooling is an event where the working temperature of the engine cold<br>conditions, so that it will result in wasteful of fuel.</p> <p>Key words: car, over heating, Cupper radiator, fuel</p> Rohmat Subodro ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 2012-03-01 2012-03-01 11 1 117 125 PENGARUH TEMPER DENGAN QUENCHING MEDIA PENDINGIN OLI MESRAN SAE 40 TERHADAP KEKUATAN TARIK DAN STRUKTUR MIKRO BAJA ST 60 http://jurnal.politama.ac.id/index.php/jp/article/view/260 <p>This study aims to determine the effect of tempering with quenching media<br>Mesran Oil SAE 40 for tensile strength and the microstructure of steel ST<br>60. Temperature tempering process carried out by quenching at a<br>temperature of 6000C to 8300C. The method used in this study was<br>descriptive using raw material for steel ST 60 specimens were produced by<br>PT. Bhineka BAJANAS. Tensile test specimens using the standard ASTM E8<br>A48. The test results showed the composition of the basic material is<br>included in the class of medium carbon steel or high carbon steel with<br>carbon content of 0.452%. The tensile strength of steel ST 60 67.74 kg/mm2<br>and an increase of 28.26% when the quenching process is carried out with<br>a maximum voltage of 86.88 kg/mm2 with an increase of 20.09% in the<br>specimens tempered with a tensile strength of 81, 35%. The results of<br>tensile testing which ended with a fracture of the specimen showed<br>extension of the raw material 12.38%, 9.80% on quenching, and 14.06% in<br>the temper. Greatest contraction occurred in the specimens tempered at<br>49.15% has decreased by 44.16% on quenching specimens, and 46.88% in<br>raw materials. Testing shows the microstructure of the microstructure<br>consists of ferrite rawmaterials and perlite with a large crystal form and a<br>balanced according to the carbon content of 0.452%.</p> Jeni Fariadhie ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 2012-03-01 2012-03-01 11 1 126 138 SISTEM INFORMASI GEOGRAFIS LOKASI KANTOR PEMERINTAH DENGAN DUKUNGAN PERANGKAT MOBILE (MOBILE DEVICE) DAN PENCARIAN JALUR TERPENDEK DENGAN ALGORITMA SEMUT (ANT COLONY) http://jurnal.politama.ac.id/index.php/jp/article/view/249 <p>Government office is a public facilities that exist in every town. Such<br>facilities were built at every strategic location, easily accessible by every<br>society, but not all residents know the location of government offices. The<br>progress of information technology so rapidly and the potential for widespread<br>utilization, opening opportunities for access, management, and utilization of<br>information in large volumes quickly and accurately increase the use of the<br>global Internet, which integrate with mobile technology has put this<br>technology in a real option. <br>Seeing the development of these technologies, this research will<br>concentrate in the manufacture of a Geographic Information System in<br>Government Offices which can be accessed via mobile devices that have<br>internet connection facilities using SVG Tiny as the representation of spatial<br>map data with vector data model, so that the resulting system is expected as<br>the central government office location information with digital mapping<br>support and assist in determining the optimal path to reach a government<br>office locations. The system is built to be used in applications of mobile<br>devices, so users get real-time information from the GIS Web server.<br>Geographic Information System built a client-server system, consisting<br>of a Web application server (ServerMap) to generate the maps stored in the<br>database server and an application Mobile Client (MobileMap) to request<br>pata to the server and display the response from the server. Map displayed in<br>the SVG XML format that can be read by the Mobile Client.<br>Kata Kunci: Sistem Informasi Geografis, SVG Tiny, Sistem Client-server,<br>Server Map, Mobile Client(MobileMap), XML SVG, real-time</p> Hardianto Hardianto Muhammad Alhan ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 2012-03-01 2012-03-01 11 1 1 17