Rumah Jurnal Online - Fakultas Sains dan Teknologi UIN Sunan Ampel Surabaya
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Representasi Pengalaman Spasial di Media Sosial Instagram:: Kasus Koridor Belanja Tradisional Malioboro Yogyakarta
Full text linkThis research aimed to examine the representation of a sense of place for a traditional shopping place on social media, both in the form of visual and narrative media. The research object was the Malioboro shopping area as represented on social media posts. The theoretical contribution of this research is as a literature review on the representation of sense of place in the Malioboro shopping area, while the practical contribution of this research is as a reference for policymakers or the government in formulating the development policy of traditional shopping streets on social media. This research was qualitative in nature, with Instagram as the data source. All posts and videos with captions were analyzed to explore the Malioboro Corridor’s physical attributes, social activities, and shared meaning. In conclusion, the three dimensions of a sense of place regarding the local conditions were presented in Instagram content..Penelitian ini bertujuan untuk mengetahui representasi sense of place koridor dalam media sosial baik dalam bentuk visual dan narasi. Obyek penelitian adalah kawasan belanja Malioboro dalam tayangan media sosial. Adapun penelitian ini akan memberikan manfaat teoritis dan praktis. Manfaat teoritis yang akan diperoleh adalah akan memberikan peran sebagai literatur mengenai representasi sense of place Koridor Belanja Malioboro pada media sosial. Sedangkan secara praktis, hasil penelitian ini dapat berguna bagi penentu kebijakan atau pemerintah dalam melakukan saran pengembangan traditional shopping street pada media sosial. Penelitian ini merupakan penelitian kualitatif dengan sumber data media sosial Instagram. Tayangan gambar dan video beserta deskripsinya dianalisis secara mendetail untuk mendapatkan atribut fisik, aktivitas sosial, makna personal dan kolektif yang terdapat pada Koridor Malioboro. Penelitian ini menyimpulkan dimensi-dimensi sense of place telah direpresentasikan dalam konten Instragram
Pengaruh Penambahan Abu Ketel (Ash Boiler) Terhadap Nilai Kuat Tekan Mortar
No full textKettle ash is the solid waste left over from burning bagasse. Boiler ash which can be used as a substitute for cement is planned to reduce pollution and greenhouse gas emissions such as CO2 from the cement industry. Due to the high SiO2 content of the boiler ash, it is expected that the ash will improve the quality of the mortar mix. Mortar composition with cement 1:4 using kettle ash instead of cement. This study aims to replace cement in the manufacture of mortar in the amount of 0%, 5%, 15% and 25%. Because it is equivalent to mortar that does not contain boiler ash, the compressive strength test results on a mixture containing 5% boiler ash are the best. The average compressive strength of mortar without boiler ash was 84.73 kg/cm2, while the average compressive strength of mortar with 5% mixture was 81.50 kg/cm2Abu ketel merupakan limbah padat sisa hasil pembakaran ampas tebu. Abu ketel yang dapat dimanfaatkan sebagai pengganti semen direncanakan untuk mengurangi polusi dan emisi gas rumah kaca seperti CO2dari industri semen. Karena kandungan SiO2abu ketel yang tinggi, diharapkan abu tersebut akan meningkatkan kualitas campuran mortar. Komposisi mortar dengan semen 1:4 yang menggunakan abu ketel sebagai pengganti semen. Penelitian ini bertujuan untuk mengganti semen dalam pembuatan mortar dalam jumlah 0%, 5%, 15%, dan 25%. Karena setara dengan mortar yang tidak mengandung abu boiler, maka hasil uji kuat tekan pada campuran yang mengandung 5% abu boiler adalah yang terbaik. Kuat tekan rata-rata mortar tanpa abu boiler adalah 84,73 kg/cm2, sedangkan kuat tekan rata-rata mortar dengan campuran 5% adalah 81,50 kg/cm2
Optimasi Suhu dan Waktu SSF untuk Produksi Bioetanol dari Sampah Daun Menggunakan Trichoderma Viride dan Zymomonas Mobilis
Full text linkFoliage from gardens or parks is biomass whose organic fraction can be decomposed. Foliage can be utilized by converting it into bioethanol. Various studies have shown that Trichoderma viride and Zymomonas mobilis play a role in the production of bioethanol from biomass, but until now there has been no report on the production of bioethanol from foliage using a mixture of T. viride and Z. mobilis. The purpose of this study was to determine the optimal SSF temperature and time for bioethanol production from foliage using T. viride and Z. mobilis. The fermentation process used the Simultaneous Saccharification and Fermentation (SSF) method with a mixture of T. viride and Z. mobilis with a composition of 5% : 5% (w/v). SSF was carried out at several variations of time and temperature, 60 hours, 72 hours, 80 hours and 96 hours for times and temperatures used are 32oC, 35oC and 38oC. The fermented bioethanol was purified by distillation and finally, the ethanol content was tested with GC. Bioethanol was successfully produced from foliage using T. viride and Z. mobilis with the highest ethanol content obtained in SSF with a temperature of 35oC and a time of 72 hours, which is 0.2151%
Perancangan Fasilitas Wisata Edukasi Mangrove Di Pantai Timur Surabaya Dengan Pendekatan Ekologi Arsitektur
Full text linkIndonesia merupakan negara kepulauan terbesar di dunia dan dikenal mempunyai hutan mangrove terluas di dunia dengan tingkat keanekaragaman hayati tinggi. Namun, menurunnya kualitas mangrove masih terjadi dan menjadi ancaman serius bagi hutan mangrove. Menanggapi isu tersebut, kawasan ini akan difokuskan penataan wisatanya, karena keberadaan ekosistem mangrove cukup mendukung untuk dijadikan objek wisata dan sarana edukasi Dalam hal ini, pemerintah saat ini melakukan pengembangan wisata bahari mangrove di Surabaya yaitu di kawasan Gunung Anyar. Penggunaan pendekatan ekologi arsitektur merupakan tanggapan sebagai solusi membangun yang tidak merusak ekosistem mangrove, dengan mengintegrasikan desain eko-arsitektur secara fisik, sistemik dan menekankan pentingya interaksi manusia dengan lingkungan
Efektifitas Bioporidrainase sebagai Resapan Air
Full text linkDevelopment of cities increasing rapidly and low of green open space cause availability of soil surface for water infiltration decreasing. In Contrast, the water runoff in hight affects the puddles like in UIN Sunan Ampel Surabaya Campus in rainy season, especially after heavy rain. The aim of study is to know how many hight of puddles in drainage channel with low of gradient hydraulic value and to know soil ability in site to infiltrate water. Many tests of laboratory were conducted such as: properties soil test, permeability, and infiltration test to analysis the biodrain need in 5 (five) of drainage channel. The result show that channel C-D needs 16 biodrain, channel K-M needs 5 biodrain, channel M1-M dan P1-Q1 needs 12 biodrain, Moreover, channel Q-T needs 30 biodrain to infiltrate water to soil effectively.
Keywords: Bioporedrainage, water infiltration, Runoff.Perkembangan kota yang terus meningkat dengan pesat dan rendahnya ruang terbuka hijau menyebabkan ketersediaan permukaan tanah untuk infiltrasi air tanah semakin berkurang. Sebaliknya air runoff mempengaruhi terjadinya genangan air di dalam kampus UIN Sunan Ampel Surabaya pada saat musim penghujan. Tujuan penelitian ini adalah untuk mengetahui berapa tinggi genangan di dalam saluran drainase dengan nilai gradien hidrolik yang rendah dan untuk mengetahui kemampuan permukaan tanah dalam menyerap air. Beberapa tes laboratorium dilakukan seperti: tes propertis tanah, permeabilitas dan tes infiltrasi pada 5 (lima) saluran drainase. Hasil dari penelitian ini menunjukkan bahwa saluran C-D memerlukan 16 biopori, saluran K-M memerlukan 5 (lima) biopori, saluran M1-M dan P1-Q1 memerlukan 12 biopori. Selanjutnya saluran Q-T memerlukan 30 biopori untuk meresapkan air ke dalam tanah dengan efektif.
Kata kunci: Bioporedrainage, resapan air, Limpasan
A Functional Form of The Zenga Curve Based on Rohde’s Version of the Lorenz Curve
Full text linkThe Zenga curve is a tool to measure income inequality that represents the income ratio between the bottom income group and the top income group. A proper Zenga curve is a Zenga curve that can detect variations in the Ratio. In this paper, we derive the functional form of the Zenga curve from Rohde's Lorenz curve model. The result of this paper is that the functional form of the Zenga curve from Rohde's version of the Lorenz curve model is a constant. It cannot represent the truly happening phenomenon of inequality
STUDI RONA AWAL LINGKUNGAN PEMBANGUNAN TEMPAT PEMROSESAN AKHIR (TPA) GOHONG KABUPATEN PULANG PISAU
No full textThe local government of Pulang Pisau, Central Kalimantan plans to build a municipal solid waste landfill located in Gohong Village, Kahayan Hilir District. The Gohong landfill is planned to be built with a sanitary landfill system located in Gohong Village, Kahayan Hilir District, Pulang Pisau Regency with an area of 64,260 m2. Based on this, it is necessary to conduct an initial environmental study of the initial environmental components before planning and development begin, to then be managed and monitored during the activity. This study uses two types of data, which are secondary data and primary data. Secondary data includes topographic data and rainfall at the construction site, while the primary data used is groundwater and river quality, and water biota analysis. The results of the study on the development plan for the Gohong landfill show that this area has a medium category of rainfall. The soil types at the site of the development plan are podsol and alluvial soil types. The quality of river water around the planned development site is class 4 water type with good groundwater quality and has diverse biological components with healthy ecosystems.Pemerintah daerah Pulang Pisau, Kalimantan Tengah merencanakan untuk membangun Tempat PemrosesanAkhir (TPA) yang terletak di Desa Gohong Kecamatan Kahayan Hilir. Tempat Pemrosesan Akhir Sampah (TPA)Gohong direncanakan untuk dibangun dengan sistem sanitary landfill yang berlokasi di Desa Gohong,Kecamatan Kahayan Hilir, Kabupaten Pulang Pisau seluas 64.260 m2. Berdasarkan hal tersebut diperlukanstudi lingkungan awal mengenai komponen-komponen lingkungan awal sebelum perencanaan danpembangunan fisik dimulai, untuk kemudian dikelola dan dipantau selama kegiatan berjalan. Studi inimenggunakan dua jenis data yaitu data sekunder dan data primer. Data sekunder meliputi data topgrafi dancurah hujan di lokasi pembangunan, sedangkan data primer yang digunakan adalah data kualitas air tanah dansungai, serta analisa biota air. Hasil studi rona awal lokasi rencana pembangunan TPA Gohong menunjukkanwilayah ini memiliki curah hujan kategori menengah. Jenis tanah di lokasi rencana pembangunan merupakantanah jenis podsoll dan aluvial. Kualitas badan air di sekitar lokasi rencana pembangunan merupakan jenis airkelas 4 dengan kulitas air tanah yang memenuhi standar, dan memiliki komponen biologis beragam denganekosistem yang sehat.Kata Kunci: rona awal, tempat pembuangan akhir, Gohong, Pulang Pisau
Analisis Perbandingan Algoritma AES Dan RC4 Pada Enkripsi dan Dekripsi Data Teks Berbasis CrypTool 2
Full text linkThe development of technology is followed by a large amount of data. Not all of the data is presented to the general public, some data are strictly kept confidential because of certain interests. This study aims to test the encryption and decryption of text data (with *.txt format) to maintain confidentiality and compare the performance of the AES algorithm with RC4. This study uses the AES and RC4 algorithms with a key length of 256 bits using CrypTool 2 for encryption and decryption processes. The result of the first trial is that the encryption and decryption test of the AES algorithm on text data results in a different ciphertext size from the original text data. While the second trial was carried out by encryption and decryption of the RC4 algorithm on text data, resulting in the same ciphertext size before the simulation process was carried out. So from this research, the RC4 algorithm produces a smaller ciphertext size than using the AES algorithm.Berkembangnya teknologi diikuti dengan bertambahnya data yang cukup besar. Data tersebut tidak semuanya disajikan untuk khalayak umum, beberapa data sangat dijaga kerahasiannya karena kepentingan tertentu. Penelitian ini bertujuan untuk melakukan uji coba enkripsi dan dekripsi pada data teks (dengan format *.txt) untuk menjaga kerahasiannya dan membandingkan kinerja dari algoritma AES dengan RC4. Penelitian ini menggunakan metode algoritma AES dan RC4 dengan panjang kunci 256 bit menggunakan CrypTool 2 untuk proses enkripsi dan dekripsi. Hasilnya uji coba pertama yaitu dilakukan uji coba enkripsi dan dekripsi algortima AES pada data teks menghasilkan ukuran ciphertext yang berbeda dari data teks asli. Sedangkan uji coba kedua dilakukan enkripsi dan dekripsi algoritma RC4 pada data teks dihasilkan ukuran ciphertext yang sama sebelum dilakukan proses simulasi. Sehingga dari penelitian ini diperoleh algoritma RC4 menghasilkan ukuran ciphertext lebih kecil dari pada menggunakan algoritma AES
On the Relation of the Total Graph of a Ring and a Product of Graphs
Full text linkThe total graph of a ring R, denoted as T(Γ(R)), is defined to be a graph with vertex set V(T(Γ(R)))=R and two distinct vertices u,v∈V(T(Γ(R))) are adjacent if and only if u+v∈Z(R), where Z(R) is the zero divisor of R. The Cartesian product of two graphs G and H is a graph with the vertex set V(G×H)=V(G)×V(H) and two distinct vertices (u_1,v_1 ) and (u_2,v_2 ) are adjacent if and only if: 1) u_1=u_2 and v_1 v_2∈H; or 2) v_1=v_2 and u_1 u_2∈E(G). An isomorphism of graphs G dan H is a bijection ϕ:V(G)→V(H) such that u,v∈V(G) are adjacent if and only if f(u),f(v)∈V(H) are adjacent. This paper proved that T(Γ(Z_2p )) and P_2×K_p are isomorphic for every odd prime p
Developing A Secure Cryptosystem with Rainbow Vertex Antimagic Coloring of Cycle Graph
Full text linkAn edge labeling of graph G is a function g from the edge set of graph G to the first natural numbers up to the number of the edge set. Graph G admits a rainbow vertex antimagic coloring if, for any two vertices, there is a path with different colors of all internal vertices. The vertex color of graph G is assigned by vertex weight. The vertex weight of graph G is obtained by summing all edge labels that incident with that vertex. The rainbow vertex antimagic connection number of graph G, denoted by rvac(G) is the smallest number of different colors induced by rainbow vertex antimagic coloring. In this research, we determine the upper bound of the rainbow vertex antimagic connection number (rvac) on a cycle graph (Cn) and create a secured cryptosystem using a modified Affine Cipher based on rainbow vertex antimagic coloring