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Analisis Perubahan Kandungan Asam Lemak Bebas pada Nasi Lalapan yang Menggunakan Minyak Goreng Berulang di Pedagang Kaki Lima Kota Malang Rimastuti, Widi; Mariana, Rina Rifqie; Larasati, Aisyah
Teknologi dan Kejuruan: Jurnal Teknologi, Kejuruan, dan Pengajarannya Vol 42, No 2: September 2019
Publisher : Fakultas Teknik Universitas Negeri Malang

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Abstract

This research aimed to (1) find the change in free fatty acid content in "nasi lalapan" that used repeated cooking oil, (2) the content difference of "nasi lalapan" from each oil repetition. This research was experimental using a quantitative approach. The target of this research was "nasi lalapan" street vendors in Malang City. The samples were taken from one vendor in one sub-district. The samples were fried chicken, fried catfish, and fried tempeh in the 0, 5th, 10th, and 20th frying and were tested in the laboratory to find the free fatty acid content change. The data analysis in this research used the ANOVA test and further LSD test. The results showed that (1) free fatty acid in fried chicken, catfish, and tempeh increased along with the frying repetition, (2) the usage of repeated cooking oil influenced the free fatty acid content. 
SISTEM MANAJEMEN MUTU ISO 9001:2008 DIGITAL BERBASIS WEB DI SMK WIDYAGAMA MALANG Susilo, Purnomo Hadi; Tuwoso, Tuwoso; Larasati, Aisyah
Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan Vol.1, No.5, Mei 2016
Publisher : Graduate School of Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (423.978 KB) | DOI: 10.17977/jp.v1i5.6334

Abstract

The problems that often occur in the current ISO document control and distribution. Those problems can be solved by changing the conventional management into digital management through information technology which is able to distribute infornasi fast, accurate and real-time. This study aims to determine the level of use, efficiency, effectiveness, and satisfaction of users of the product to be developed. These results indicate that the products have been developed to improve the efficiency and effectiveness of the performance of teachers who served as a principal management ISO, and can be used as a solution to get the ISO quality management is more reliable in the era of digitalization. This is evidenced from the results of the field trials showed that the perpetrators of the management is satisfied by giving a value of 97.92% when using a product that has been developed.Permasalahan yang sering terjadi pada ISO yakni saat pengendalian dan pendistribusian doku­men. Permasalahan tersebut dapat diatasi dengan mengubah manajemen konvensional menjadi manajemen digital dengan memanfaatkan teknologi informasi yang mampu medistribusikan infornasi secara cepat, akurat dan realtime. Penelitian ini bertujuan untuk mengetahui tingkat penggunaan, efisiensi, efektivitas, dan kepuasan pengguna terhadap produk yang akan dikembangkan. Hasil penelitian ini menunjukkan bahwa produk yang telah dikembangkan dapat meningkatkan efisiensi dan efektivitas kinerja guru yang menjabat sebagai pelaku manajemen ISO, serta dapat digunakan sebagai solusi untuk menuju manajemen mutu ISO yang lebih handal di era digitalisasi. Hal ini dibuktikan dari hasil ujicoba dilapangan menunjukkan bahwa para pelaku manajemen merasa puas dengan memberikan nilai sebesar 97,92% saat menggunakan produk yang telah dikembangkan.
Combining Off-the-Job Productivity Regression Model with EPA’s NONROAD Model in Estimating CO2 Emissions from Bulldozer Hajji, Apif M.; Larasati, Aisyah; Lewis, Michael P.
Civil Engineering Dimension Vol 19, No 2 (2017): SEPTEMBER 2017
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (363.879 KB) | DOI: 10.9744/ced.19.2.73-78

Abstract

Heavy duty diesel (HDD) construction equipment which includes bulldozer is important in infrastructure development. This equipment consumes large amount of diesel fuel and emits high level of carbon dioxide (CO2). The total emissions are dependent upon the fuel use, and the fuel use is dependent upon the productivity of the equipment. This paper proposes a methodology and tool for estimating CO2 emissions from bulldozer based on the productivity rate. The methodology is formulated by using the result of multiple linear regressions (MLR) of CAT’s data for obtaining the productivity model and combined with the EPA’s NONROAD model. The emission factors from NONROAD model were used to quantify the CO2 emissions. To display the function of the model, a case study and sensitivity analysis for a bulldozer’s activity is also presented. MLR results indicate that the productivity model generated from CAT’s data can be used as the basis for quantifying the total CO2 emissions for an earthwork activity.
PEMS-on board and E3 Modeling: A Comparison between Real-World Measurement and Emissions Estimates from Construction Equipment M. Hajji, Apif M. Hajji; Larasati, Aisyah; P. Lewis, Michael; Yue, Huang
Civil Engineering Dimension Vol. 21 No. 2 (2019): SEPTEMBER 2019
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (352.17 KB) | DOI: 10.9744/ced.21.2.59-65

Abstract

Vehicles in construction industry are typically powered by diesel engines and are considered to be an off-road source of air pollution. Air pollutant emissions include nitrogen oxides (NOx), particulate matter (PM), hydrocarbons (HC), and carbon monoxide (CO). Any engine that combusts a nonrenewable carbonaceous fuel will have net emissions of carbon dioxide (CO2). Economic-Energy-Environmental (E3) model, a statistical-modeled tool, is developed by combining a multiple linear regression (MLR) approach for modeling equipment productivity with the emissions calculation algorithm from Environment Protection Agency (EPA)’s NONROAD model. This paper compares emissions data between the field data to E3 model outputs, and  determines the similarity of the two sources of fuel use data. It is expected the two data are not narrowly similar since the field data are for individual vehicles, while E3 results are based on NONROAD model, which was intended to estimate average fuel use for a fleet of Heavy-Duty Diesel (HDD) equipment.
Struktur dan Sifat Mekanik Film Bacterial Cellulose dengan Disintegrasi Mekanis Muhajir, Muhamad; Suryanto, Heru; Larasati, Aisyah
JPSE (Journal of Physical Science and Engineering) Vol 3, No 2 (2018): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

Film structure was greatly affected to mechanical properties of Bacterial Cellulose (BC). An engineering effort on Bacterial Cellulose Fibers (BCF) structure was changing the size and distribution of BC fiber through mechanical disintegrator process using a High Speed Blender (HSB). This study aimed to show the effect of disintegrator to the structure and mechanical properties of BCF film. The method used in this study is a synthesis of BCF from fermentation from pineapple peel waste with incubation of Acetobacter xylinum (A. xylinum) for 14 days. BC pellicle was soaked by using 1% NaOH for 24 hours then distrusted using the HSB with code speed variation of L (18000 rpm), M (21000 rpm), and H (26000 rpm) for 5 min. Then film formed by a casting method and dried in the oven at a temperature of 60 °C for 8 hours. The study result showed that the morphology of BCF formed pores, the crystallinity decreased so the tensile strength was decreased by 94%. The results of this study are expected to provide engineering information on the BCF structure potentially for filters and for sensors. DOI: http://dx.doi.org/10.17977/um024v3i22018p055 
DATA ANALYTICS SUPPORTING LEAN MANUFACTURING TOWARDS INDUSTRY 4.0 THROUGH SIMULATION: A REVIEW Abdul Rahman, Soufhwee; Mohamad, Effendi Bin; Abdul Rahman, Azrul; Hamdala, Ihwan; Larasati, Aisyah; pawenang, supawi; Ito, Teruaki
Journal of Engineering and Management in Industrial System Vol 8, No 1 (2020)
Publisher : Badan Penerbit Jurnal, Faculty of Engineering, Universitas Brawijaya

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Abstract

The Lean Manufacturing (LM) system has been increasingly used in many industrial applications, worldwide, in the last 3 decades. The LM system is based on sound philosophy and includes several tools and principles, which permit its usage in eliminating wastes and decreasing the production costs. Though the conventional LM is helpful, the new paradigm, i.e., Industry 4.0, has started challenging the system. The traditional LM system cannot analyse the complex issues present in the existing competitive market on its own. This is because the Industry 4.0 is based on data which is more diverse, complex and fast. In this review, the researchers have attempted to identify the solution for the current scenario. Literature survey showed that simulation was a relevant tool that could be used for addressing the complexity-based issues related to the new concept. Though the combination of the simulation and LM system helped in understanding the problems, there still existed a gap in the LM system with regards to the merging of the 2 technologies of Industry 4.0. 
PENGIDENTIFIKASIAN SEGMENTASI PENGGUNA SISTEM MANAJEMEN PEMBELAJARAN SEBUAH UNIVERSITAS DENGAN METODE TWO-STEP CLUSTERING Purnama, Agus Rachmad; Larasati, Aisyah
Journal of Research and Technology Vol. 6 No. 1 (2020): JRT Volume 6 No 1 Jun 2020
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (438.137 KB)

Abstract

This study aims to identify user segmentations of a learning management system at Universitas Negeri Malang using two-step clustering method. Data is collected through an on-line survey which is linked onto the academic information systems. Total number of data are 10.594 responses. This study runs three clustering methods, two-step, k-means, and kohonen clustering, in order to identify the user segmentation. Two-step clustering methods performs better than the other two clustering methods (k-means and kohonen) based on silhouette clustering index. The number of cluster resulted from two-step clustering method are three clusters. The top three of most important factors in identifying the user segmentation are the benefit of the learning management usage in helping to access information, increasing the effectiveness of accomplishing assignments, and students satisfaction on the learning management system services.
PENINGKATAN KEMAMPUAN MENGOPERASIKAN REFERENCE MANAGEMENT SOFTWARE ZOTERO DAN END-NOTE UNTUK GURU SMKN 6 MALANG Larasati, Aisyah
JURNAL PENGABDIAN KEPADA MASYARAKAT Vol 26, No 1 (2020): JANUARI - MARET
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkm.v26i1.15777

Abstract

Kewajiban untuk menulis karya ilmiah bagi guru mendorong pentingnya penguasaan reference management software agar kualitas sitasi dan daftar rujukan dalam karya ilmiah sesuai dengan format yang diinginkan. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk memberikan pengetahuan dan keterampilan bagi guru SMKN 6 Malang tentang reference management software Zotero dan EndNote. Kegiatan pengabdian dilakukan selama dua hari. Selain itu, dilakukan juga survey tentang persepsi pelatihan tentang reference management software dan operasionalnya sebelum dan sesudah pelatihan. Selain itu, survey juga berisikan tentang persepsi peserta pelatihan terhadap penyampaian materi pelatihan. Dari hasil survey, diketahui mayoritas peserta pelatihan belum memahami reference management software dan pengoperasiannya. Setelah pelatihan, mayoritas peserta pelatihan berpersepsi bahwa Zotero lebih mudah untuk digunakan dibandingkan dengan End-Note. Mayoritas peserta pelatihan berpersepsi bahwa kedua reference management software yang diajarkan, baik Zotero maupun End-Note, mudah untuk digunakan dalam menulis sitasi dan daftar pustaka. Hasil survey juga menunjukkan bahwa mayoritas peserta pelatihan menyatakan tingkat penguasaan materi baik dan cara penyampaian materi oleh penyaji menarik serta interaksi penyaji dan peserta baik.Kata kunci: Reference Management Software; Zotero; End-Note; Sitasi.AbstractThe obligation to write scientific papers for teachers encourages the importance of mastering reference management software so that the quality of citations and reference lists in scientific papers are in accordance with the desired format. This community service activity aims to provide knowledge and skills for teachers of SMKN 6 Malang about Zotero and EndNote reference management software. The workshop activities were carried out for two days. In addition, a survey of the workshop participant about reference management software and operations was also conducted before and after the workshop. The survey also contained perceptions of workshop participants regarding the delivery of training materials. From the survey results, it is known that the majority of workshop participants did not understand the reference management software and its operation before attending the workshop. After the workshop, most of the participants perceived that Zotero was easier to use compared to End-Note. Most of the participants also perceived that the two reference management software taught, both Zotero and End-Note, were easy to use in writing citations and references. The survey results also showed that the majority of participants stated that the level of mastery of the material was good and the way the material was presented by the presenters was interesting and the interaction between presenters and participants was good.Keywords: Reference Management Software; Zotero; End-Note; Citation.
PENGARUH PENAMBAHAN TEPUNG TERIGU TERHADAP MUTU BAKSO JAMUR TIRAM PUTIH Hertanto, Mohamad Yogi; Larasati, Aisyah; Issutarti, Issutarti
Teknologi dan Kejuruan: Jurnal Teknologi, Kejuruan, dan Pengajarannya Vol 41, No 2: September 2018
Publisher : Fakultas Teknik Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um031v41i22018p164

Abstract

Tujuan penelitian untuk menganalisis kandungan proksimat dan sifat organoleptik bakso jamur tiram. Penelitian eksperimen ini menggunakan Rancangan Acak Lengkap (RAL) dengan dua kali pengulangan. Data kandungan proksimat dianalisis menggunakan ANOVA dilanjutkan dengan uji DMRT. Hasil penelitian menunjukan bahwa kandungan proksimat bakso jamur tiram dengan penambahan tepung terigu meliputi protein, lemak, air, abu, serat kasar, dan serat kasar secara berurutan untuk perlakuan 1% yaitu 11,64%, 4,03%, 46,73%, 5,31%, 1,55% dan 28,51%, untuk perlakuan 2% yaitu 12,53%, 3,29%, 48,75%, 5,59%, 1,86%, dan 29,84% dan untuk perlakuan 3% yaitu 13,18%, 2,86%, 49,79%, 5,66%, 2,20% dan 32,28%. Penambahan tepung berpengaruh terhadap tekstur dan rasa. Hasil skor tekstur 4,33 (cukup kenyal) dan skor rasa 4,17 (cukup sedap). Penambahan tepung terigu berpengaruh terhadap tekstur, dengan hasil skor 4,16 (agak suka). Kesimpulan dari penelitian ini adalah kadar abu bakso jamur tiram masih belum memenuhi syarat SNI bakso 2014.
PENGARUH TEKNIK SANGRAI DAN PANGGANG DALAM PEMBUATAN TEPUNG KACANG HIJAU (Phaseolus radiates L.) TERHADAP MUTU KATETONG Pertiwi, Rosa Putri; Larasati, Aisyah; Hidayati, Laili
Teknologi dan Kejuruan: Jurnal Teknologi, Kejuruan, dan Pengajarannya Vol 41, No 1: Februari 2018
Publisher : Fakultas Teknik Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um031v41i12018p089

Abstract

Tujuan penelitian adalah menganalisis : (1) kandungan protein tepung ka-cang hijau dan cookies katetong tepung kacang hijau, kadar air tepung kacang hijau; (2) sifat fisik warna; (3) mutu hedonik aroma dan tekstur; dan 4) tingkat kesukaan panelis terhadap aroma, tekstur, dan rasa pada cookies katetong tepung kacang hijau. Data dianalisis menggunakan uji t. Hasil penelitian menunjukkan perlakuan sangrai dan oven pada proses pembuatan tepung kacang hijau tidak berpengaruh terhadap kandungan protein tepung kacang hijau, namun berpengaruh pada kadar air tepung kacang hijau dan protein cookies katetong tepung kacang hijau. Perlakuan sangrai dan oven pada pembuatan tepung kacang hijau tidak berpengaruh terhadap sifat mutu tekstur, aroma, dan rasa cookies katetong tepung kacang hijau, sedangkan pada mutu aroma dan hedonik tektur cookies katetong tepung kacang hijau menunjukkan adanya pengaruh yang nyata.