167 10 2068 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource e-Journal USK Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Tenri Pada, Andi Ulfa; Universitas Syiah Kuala Date A point or period of time associated with an event in the lifecycle of the resource 2013-04-27 Description An account of the resource This research is conducted to reveal : (1) the application of science study strategy with CLIS study model to improve the students’ understanding of earth and universe concept, (2) the science study strategy with CLIS study model to improve the academic attitude of students, (3) the teacher’s and students’ response to science study strategy with CLIS. Method of the research is a Classroom Action Research  (CAR), consisting of three cycles. The data were collected using a test, an observation, and an interview. The result of the students’ concept understanding test was processed statistically using “t-Test”. The improvement of student’s understanding was corelated with Pearson Correlation Technique, while the interview and observation were described, then concluded. The result of data analysis indicate that the model of CLIS for universe and earth concept can improve the mastery of concept. In the first cycle action, it is seen that the acquirement of t0 was 9.069; in the second cycle the t value was 4.054; and in the third cycle it was 9.442; which is bigger than tt of only 2.025. It indicates that CLIS study method has improved the students’ concept understanding in every cycle. The correlation result of the first cycle indicates that the value of r is  - 0.273; in the second cycle, the value of r was equal to 0.222. While in the third cycle, the value of r is 0.000. It indicates that the CLIS model study does not influence the improvement of the students’ academic attitude. This study model requires much longer time than study method usually used by the teacher, but the students are happy to study with CLIS study model. Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context http://jurnal.unsyiah.ac.id/JBE/article/view/447 Language A language of the resource ind Publisher An entity responsible for making the resource available Jurnal Biologi Edukasi Relation A related resource http://jurnal.unsyiah.ac.id/JBE/article/view/447/607 Source A related resource from which the described resource is derived Jurnal Biologi Edukasi; Vol 2, No 3 (2010): Jurnal Biologi Edukasi; 41-48 2085-6725 Subject The topic of the resource CLIS; Science; Students’ Understanding; Concept Title A name given to the resource Penerapan Model Pembelajaran Children Learning In Science Untuk Meningkatkan Pemahaman Siswa Kelas IV SD Muhammadiyah Condongcatur Pada Konsep Bumi Dan Alam Semesta Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource e-Journal USK Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Syahrial, Syahrial; Syiah Kuala University Sulastri, Sulastri; Universitas Syiah Kuala Mukhlis, Mukhlis; Universitas Syiah Kuala Nazar, Muhammad; Universitas Syiah Kuala Date A point or period of time associated with an event in the lifecycle of the resource 2014-02-05 Description An account of the resource Penelitian ini bertujuan memanfaatkan getah pepaya (Carica papaya) sebagai katalis pada pembuatan biodisel dari minyak jelantah. Getah pepaya (Carica papaya) diperoleh dari Lembah Seulawah Aceh Besar dan minyak jelantah berasal dari Kentucky Fried Chiken (KFC). Target khusus yang ingin dicapai adalah mendapatkan informasi tentang kemampuan getah papaya (Carica papaya) bertindak sebagai sumber enzim lipase. Hasil penelitian memperlihatkan bahwa getah pepaya (Carica papaya) dapat berfungsi sebagai sumber enzim lipase pada proses transesterifikasi antara minyak jelantah dan 1-butanol. Struktur butil ester ditegaskan oleh spektrum FT-IR pada 1746 cm-1 untuk regang  C=O dan pada 1213,7 cm -1 untuk regang C-O. Meskipun demikian, butil ester yang dihasilkan masih bercampur dengan alkohol dan asam lemak bebas yang ditegaskan adanya puncak pada 3350,5 cm-1 untuk regang –O-H. Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context http://jurnal.unsyiah.ac.id/JBE/article/view/1044 Language A language of the resource ind Publisher An entity responsible for making the resource available Jurnal Biologi Edukasi Relation A related resource http://jurnal.unsyiah.ac.id/JBE/article/view/1044/981 Source A related resource from which the described resource is derived Jurnal Biologi Edukasi; Vol 2, No 1 (2010): Jurnal Biologi Edukasi; 54-57 2085-6725 Subject The topic of the resource getah pepaya, minyak jelantah, biodisel Title A name given to the resource Pemanfaatan Getah Pepaya (Carica papaya) sebagai Katalis pada Pembuatan Biodisel dari Minyak Jelantah Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource e-Journal USK Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Kamal, Samsul; IAIN Ar-Raniry Jailani, Jailani; Universitas Serambi Mekkah Rahmi, Rahmi Date A point or period of time associated with an event in the lifecycle of the resource 2013-04-28 Description An account of the resource Paradigm of education requires a better change in students’ behavior. To challenge these problems, the improvement way of learning is needed. Inquiry method is associated to improve student learning outcomes and activities. The purpose of this study was to determine the differences of student learning outcomes and activities that is learned between the inquiry method and conventional learning. The population of this study was all students from five classes in grade VII MTsN Bakti Pidie City academic year of 2010/2011. The samples were randomly selected (random sampling) with VII2 grade students as the experimental group and VII4 grade students as a control group. The data was collected through paper and pencil test: pretest and posttest and non-test through observation sheet. The data is analyzed using t-test, moreover student activities were analyzed by percentage formula. The analysis of data shows t count= 3.80 and ttable = 2.64, it is indicated that the student learning outcomes by methods of inquiry is significantly different from student learning outcomes with conventional methods. Students teaching by Inquiry learning are more active than students teaching by conventional learning. Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context http://jurnal.unsyiah.ac.id/JBE/article/view/474 Language A language of the resource ind Publisher An entity responsible for making the resource available Jurnal Biologi Edukasi Relation A related resource http://jurnal.unsyiah.ac.id/JBE/article/view/474/899 Source A related resource from which the described resource is derived Jurnal Biologi Edukasi; Vol 4, No 1 (2012): Jurnal Biologi Edukasi; 30-35 2085-6725 Subject The topic of the resource Inquiry learning method; student outcome; student activity Title A name given to the resource EFEKTIVITAS PEMBELAJARAN INQUIRY TERHADAP HASIL DAN AKTIVITAS BELAJAR SISWA MTsN SAKTI KOTA BAKTI KABUPATEN PIDIE Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource e-Journal USK Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Rahmatan, Hafnati; Syiah Kuala University Date A point or period of time associated with an event in the lifecycle of the resource 2013-10-20 Description An account of the resource The purpose of this research is to investigate the performance of contracting Biology teachers working on preparing teaching plan and teaching learning process. The population was 54 contracting Biology teachers who were teaching at SLTP and SMU in Nanggroe Aceh Darusssalam province. The sample taken by purposive random sampling was 24 teachers. The instruments used in this study were an essay test which was used for measuring the performance of teaching plan and teaching learning process by IPKM-1 and IPKM-2. The analyzed data showed that the contracting Biology teachers’ working on making teaching plan and t teaching learning process stay at level “enough and good”. It is supported by the average score 2.53 for making teaching plan and 2.14 for teaching learning process. Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context http://jurnal.unsyiah.ac.id/JBE/article/view/797 Language A language of the resource ind Publisher An entity responsible for making the resource available Jurnal Biologi Edukasi Relation A related resource http://jurnal.unsyiah.ac.id/JBE/article/view/797/737 http://jurnal.unsyiah.ac.id/JBE/article/downloadSuppFile/797/1 Source A related resource from which the described resource is derived Jurnal Biologi Edukasi; Vol 1, No 1 (2009): Jurnal Biologi Edukasi; 1-5 2085-6725 Subject The topic of the resource teaching ability, contracting biology teachers Title A name given to the resource Analisis Kinerja Mengajar Guru Perbantuan Sementara (GPS) Biologi SLTP dan SMU Se-Provinsi Nanggroe Aceh Darussalam Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource e-Journal USK Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Sari, Widya; Universitas Syiah Kuala Zanaria, Tjut Mariam; Universitas Syiah Kuala Zanaria, Tjut Mariam; Universitas Syiah Kuala Agustina, Elita; Universitas Syiah Kuala Agustina, Elita; Universitas Syiah Kuala Date A point or period of time associated with an event in the lifecycle of the resource 2013-04-27 Description An account of the resource The research on species of  Anopheles’ breeding places has been carried out at Desa Rukoh in the District of Syiah Kuala, Banda Aceh from February to June 2007. The aim of the research was to identify species of Anopheles’  breeding places at Desa Rukoh. In this research, the purposive sampling method has been implemented to obtain the samples from ten different locations around Desa Rukoh. Data collection was conducted by catching the larva at breeding places and catching the adult Anopheles  trapped by using Aspirator and Light Trap. CCD microscope was  used to identify the species of Anopheles. Furthermore, the data were analyzed by using the descriptive approaches. Based on laboratory analysis, it has been identified that three species of Anopheles namely, An. subpictus, An. vagus,  and An. sundaicus. The breeding places of Anopheles  at Desa Rukoh were ponds, buffalo’s trash dam, ex man’s footprint, ditches and swamp. Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context http://jurnal.unsyiah.ac.id/JBE/article/view/456 Language A language of the resource ind Publisher An entity responsible for making the resource available Jurnal Biologi Edukasi Relation A related resource http://jurnal.unsyiah.ac.id/JBE/article/view/456/616 Source A related resource from which the described resource is derived Jurnal Biologi Edukasi; Vol 3, No 1 (2011): Jurnal Biologi Edukasi; 31-34 2085-6725 Subject The topic of the resource Anopheles; breeding place; Rukoh Title A name given to the resource Studi Jenis Nyamuk Anopheles pada Tempat Perindukannya di Desa Rukoh Kecamatan Syiah Kuala Kota Banda Aceh Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource e-Journal USK Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Helmi, Helmi Date A point or period of time associated with an event in the lifecycle of the resource 2015-06-16 Description An account of the resource The study has been done to determine the effect of various types of biochar  and consentration of agrodyke fertilizer on the growth of mahoni  seedlings.The  study used  block randomized factorial design which were types of biochar (B) as the first factor, namely: soil + imperata cylindrica charcoal (B1), soil + coconut husk charcoal  (B2), Soil + charcoal of sawdust (B3), and  agrodyke fertilizer concentration as the second factor (A), namely: 0 g polybag-1 (A0), 25 g polybag-1 (A1), 50 g polybag-1 (A2), 75 g polybag-1 (A3) as other factors. Each treatment was replicated three times. The results showed that all types of  biochar  have increased in plant height and number of leaves mahoni seedlings significantly at 40, 60, and 80 days after weaning (DAW). Various concentration of Agrodyke fertilizer have affected  considerably on plant height and number of leaves at 40 and 60  days after weaning (DAW) and root length  at 80 days after weaning (DAW). However, there were no significant effects of types of biochar and various concentration of agrodyke fertilizer on  all parameters. Biochar Soil+Charcoal Sawdust (B3) and 75 g of agrodyke fertilizer polibag-1 (A3)  have produced the best growth rate of mahoni seedlings Identifier An unambiguous reference to the resource within a given context http://jurnal.unsyiah.ac.id/JBE/article/view/2396 Language A language of the resource ind Publisher An entity responsible for making the resource available Jurnal Biologi Edukasi Rights Information about rights held in and over the resource Copyright (c) 2015 Jurnal Biologi Edukasi Source A related resource from which the described resource is derived Jurnal Biologi Edukasi; Vol 6, No 2 (2014): Jurnal Biologi Edukasi; 71-77 2085-6725 Subject The topic of the resource types of biochar; fertilizers agrodyke; Mahoni seedlings growth Title A name given to the resource The Effect of Type Biochar and Agrodyke Fertilizer Concentration on the Growth of Seedling of Mahoni (Swietenia macrophylla King.) Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Contributor An entity responsible for making contributions to the resource Format The file format, physical medium, or dimensions of the resource application/pdf Relation A related resource http://jurnal.unsyiah.ac.id/JBE/article/view/2396/2873 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource e-Journal USK Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Abdullah, Abdullah; Syiah Kuala University Dahlian, Dahlian; Syiah Kuala University Mukhlisin, Mukhlisin; Syiah Kuala University Date A point or period of time associated with an event in the lifecycle of the resource 2013-10-20 Description An account of the resource The research about food preference of Sumatran elephant have conducted in Jantho Natural Reserve Aceh Besar District inAcehProvincein April to June 2006. The aim of this research was to identified elephant food species vegetation in elephant habitat. This research used direct observation method in 20 transect. We found 22 species eaten Sumatran elephant in Jantho Natural Reserve Aceh Besar District. The food preference consist of Moraceae, 11 species (18,74%), Poaceae, 15 species (15,64%), Arecaceae, 9 species (14,52%), Euphorbiaceae, 6 spesies (9,95%), Mimosaceae, 5 spesies (6,25%), Caesalpiniaceae, 2 spesies (3,30%), Cyperaceae,4 spesies, (3,27%), Bombacaceae, 2 species (3.23 %), Gleicheniaceae, 4 species (3.22%), Zingiberaceae 4 species (2.77%),Fabaceae, 2 species (2.58%), Musaceae, 1 species (2,10%), Apocynaceae, 2 species (1.94 %), Ebonaceae, 1 species (1,70%), Sapindaceae, 1 species (1.41%). Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context http://jurnal.unsyiah.ac.id/JBE/article/view/807 Language A language of the resource ind Publisher An entity responsible for making the resource available Jurnal Biologi Edukasi Relation A related resource http://jurnal.unsyiah.ac.id/JBE/article/view/807/746 Source A related resource from which the described resource is derived Jurnal Biologi Edukasi; Vol 1, No 1 (2009): Jurnal Biologi Edukasi; 66-68 2085-6725 Subject The topic of the resource Preferensi makan, gajah Sumatera Title A name given to the resource Preferensi Makan Gajah Sumatera (Elephas maximus sumatranus) di Kawasan Hutan Cagar Alam Jantho Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource e-Journal USK Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Yonvitner, Yonvitner; Institut Pertanian Bogor Date A point or period of time associated with an event in the lifecycle of the resource 2013-04-27 Description An account of the resource Green mussel is a mollusk class that has been developing to culture system.  The perna viridis culture using bagan with rope as settling media.  Settlement of perna on rope that strongly will support the survival rate of mussel.  This research done to assessing bysus on rope media in water column.   Sampel take from culturing area in Muara Kamal station.  The Measurement of bysus strength use Shimadzu Autograp AGS-D Series.  Data collected analyzed are descriptive and  principal component  analyses.  Water quality that measure are temperature (30,1 oC), current (0,115 m/dt), Salinity (28,89 promil).  Bysus elongasi strength between 4,598-7,892 with bysus line reach 20-60 piece.  Break point  yarn much happen at plaque site from bysus. Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context http://jurnal.unsyiah.ac.id/JBE/article/view/432 Language A language of the resource ind Publisher An entity responsible for making the resource available Jurnal Biologi Edukasi Relation A related resource http://jurnal.unsyiah.ac.id/JBE/article/view/432/590 Source A related resource from which the described resource is derived Jurnal Biologi Edukasi; Vol 2, No 2 (2010): Jurnal Biologi Edukasi; 15-20 2085-6725 Subject The topic of the resource Green mussel; Bysus; Settlement Title A name given to the resource Kekuatan Penempelan Bysus Kerang Hijau (Perna viridis) Pada Media Penempel Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource e-Journal USK Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Fitri, Lenni; Universitas Syiah Kuala Yasmin, Yekki; Universitas Syiah Kuala Date A point or period of time associated with an event in the lifecycle of the resource 2013-04-28 Description An account of the resource The research is aimed to isolate and observe the morphology of chitinolitic bakteria. The research was conducted since November 2010 until Apryl 2011 at Microbiology Laboratory ofMathematics and Sciences Faculty, University of Syiah Kuala. The method used is experimental method. Locations of water sample taken are at sea, river, and embankment which taken in some areas around Banda Aceh and Aceh Besar. The results showed that there are 18 pure cultuated chitinolitic bacteria isolates. And the results of morphologycal bakteria colony showed that all isolates were circle shape colony. It was found that the flat shape of colony is 14 isolates and 4 serrated. The sizes of colony were found from 1,0 mm until 3,5 mm. The white isolate are 13 and 5 yellowish. The most of isolates are negative gram which bacil and coccus cell shape. Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context http://jurnal.unsyiah.ac.id/JBE/article/view/465 Language A language of the resource ind Publisher An entity responsible for making the resource available Jurnal Biologi Edukasi Relation A related resource http://jurnal.unsyiah.ac.id/JBE/article/view/465/626 Source A related resource from which the described resource is derived Jurnal Biologi Edukasi; Vol 3, No 2 (2011): Jurnal Biologi Edukasi; 20-25 2085-6725 Subject The topic of the resource chitinolitic bakteria; isolation; morphology bakteria Title A name given to the resource ISOLASI DAN PENGAMATAN MORFOLOGI KOLONI BAKTERI KITINOLITIK Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource e-Journal USK Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Wardiah, Wardiah Linda, Linda Rahmatan, Hafnati Date A point or period of time associated with an event in the lifecycle of the resource 2015-04-01 Description An account of the resource Limbah air cucian beras mengandung senyawa organik yang dapat dimanfaatkan sebagai sumber hara. Pengaruh limbah air cucian beras terhadap pertumbuhan tanaman pakchoy belum diketahui. Penelitian bertujuan untuk mengetahui pengaruh air cucian beras dan dosis yang tepat air cucian beras terhadap pertumbuhan tanaman pakchoy. Pendekatan penelitian adalah kuantitatif dan jenis penelitian adalah eksperimen. Rancangan penelitian adalah Rancangan Acak Kelompok (RAK) non faktorial, dengan 5 perlakuan dan 4 ulangan. Dosis perlakuan yang digunakan dalam penelitian ini yaitu P0 (kontrol/0% air cucian beras), P1 (25% air cucian beras), P2 (50% air cucian beras), P3 (75% air cucian beras), dan P4 (100% air cucian beras). Air cusian beras yang digunakan adalah air cucian beras yang pertama. Parameter yang diukur yaitu tinggi tanaman (cm), jumlah daun (helai), dan berat kering (gram). Data dianalisis menggunakan Analisis Of Varians (ANOVA), sedangkan uji lanjut berdasarkan nilai KK yang diperoleh. Hasil penelitan diperoleh bahwa terdapat pengaruh yang signifikan dari berbagai konsentrasi air cucian beras terhadap  tinggi tanaman pakchoy pada umur 10 dan 20 HST) dan berat kering, namun tidak pada jumlah daun. Dosis yang paling baik bagi pertumbuhan tanaman pakchoy adalah 100% air cucian beras  untuk semua parameter, sehingga dapat disimpulkan bahwa air cucian beras berpotensi sebagai pengganti pupuk kimia untuk meningkatkan pertumbuhan pakchoy Identifier An unambiguous reference to the resource within a given context http://jurnal.unsyiah.ac.id/JBE/article/view/2274 Language A language of the resource ind Publisher An entity responsible for making the resource available Jurnal Biologi Edukasi Rights Information about rights held in and over the resource Copyright (c) 2015 Jurnal Biologi Edukasi Source A related resource from which the described resource is derived Jurnal Biologi Edukasi; Vol 6, No 1 (2014): Jurnal Biologi Edukasi; 34-38 2085-6725 Subject The topic of the resource Limbah air cucian beras, pakchoy, pertumbuhan Title A name given to the resource POTENSI LIMBAH AIR CUCIAN BERAS SEBAGAI PUPUK ORGANIK CAIR PADA PERTUMBUHAN PAKCHOY (Brassica rapa L.) Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Contributor An entity responsible for making contributions to the resource Format The file format, physical medium, or dimensions of the resource application/pdf Relation A related resource http://jurnal.unsyiah.ac.id/JBE/article/view/2274/2865