Claim Missing Document
Check
Articles

ANALISIS SIRKULASI UDARA PADA TANAMAN KOPI BERDASARKAN TINGKAT KEKASARAN TUMBUHAN DAN POLA TANAM GRAF TANGGA PERMATA MENGGUNAKAN METODE VOLUME HINGGA Riastutik, Ervin Eka; Dafik, D; Fatahillah, Arif
KadikmA Vol 6, No 1: April 2015
Publisher : KadikmA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (751.298 KB)

Abstract

Abstract. Coffee beans are one of Indonesian main export commodities. It can be seen from the amount of coffee exported to other countries, especially Europe. However, the vast area of coffee plantation does not make the productivity of the coffee beans become maximum. There are several factors which influence this condition. One of them is the cropping pattern of coffee plant and the air circulation that affect the pollination process of coffee flower. In this research, an air condition models was designed to solve the problem by employing Volume Hingga method. The models were designed based on the level of plant roughness, distance between coffee plants, and the cropping pattern of coffee (Diamond Ladder Graph). The results of the research is the mathematical models that influenced the level of plant roughness and the cropping pattern of coffee with angle. The symbol of plant roughness in this model is . Coefficient is limited at 0 until 1 (0< <1). The high value of plant roughness coefficient shows the high level of plant roughness. Key Words: coffee plant, air circulation, level of plant roughness, Volume Hingga Method, Diamond Ladder Graph.
ANALISIS KECEPATAN ALIRAN HIDROGEN PEROKSIDA (H2O2) PADA STERILISASI SALURAN AKAR GIGI MENGGUNAKAN METODE NUMERIK VOLUME HINGGA Hardiyanti, Siska Aprilia; Dafik, D; Fatahillah, Arif
KadikmA Vol 6, No 2 (2015)
Publisher : KadikmA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (605.848 KB)

Abstract

Abstract. The sterilization of tooth root canal is one of phases at treatment of endodontic or pulp treatment or commonly called tooth root canal treatment. This treatment is necessary because over the years many doctors assumed cavities tooth that cause pain and can not cure, should be pulled out. Endodontic treatment is the appropriate treatment for patient. Endodontic treatment is one of the measures to maintain the tooth in the mouth as long as possible when the pulp tissue has been infected. This research construct a model of tooth root canal and solve sterilization problem by using the finite volume method. Model of simulation process is solved using MATLAB and FLUENT software. The model which is constructed based on direction syringe spray and impeller pressure. Based on the result of the research, if angle of syringe spray is getting greater then the velocity is getting lower, if the angle of syringe spray is getting smaller then the velocity is getting higher. If the value of impeller pressure is more than 6 Pa then velocity is higher, if the value of impeller pressure is less than 6 Pa then velocity is negative value, whereas if the value of impeller pressure is 6 Pa then velocity is moderate value and the change of domain length of tooth root canal is not to great, so the spreading of velocity is evenly. Key Words : Treatment of endodontically, Sterilization of Root Canals, Angle of Syringe Spray, Impeller Pressure, Finite Volume Method.
NILAI KETAKTERATURAN TOTAL SISI DARI GRAF GUNUNG BERAPI Sholehah, Rukmana; Slamin, S; Dafik, D
KadikmA Vol 6, No 2 (2015)
Publisher : KadikmA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (773.697 KB)

Abstract

Abstract. For a simple undirected connected graph G(V,E) with vertex set V and edge set E a labeling  : V  E → {1, 2, 3, ..., k} is called a total k-labeling. A total k-labeling is defined to be an edge irregular total k-labeling of the graph G if for every two different edges uv and xy of G there is t(uv) ≠ t(xy). The minimum k for which the graph G has an edge irregular total k-labeling is called the total edge irregularity strength of the graph G, denoted by tes(G). In this paper, we determine the total edge irregularity strength of volcano graph tes(Gbm,n) and the total edge irregularity strength of s copies volcano graph tes(sGbm,n). Key Words : edge irregular total labeling, total edge irregularity strength, volcano graph
PEMODELAN WIND TURBINE ROTOR TIPE HAWT (HORIZONTAL AXIS WIND TURBINE) MENGGUNAKAN METODE VOLUME HINGGA Zahroh, Millatuz; Dafik, D; Fatahillah, Arif
KadikmA Vol 6, No 2 (2015)
Publisher : KadikmA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (444.698 KB)

Abstract

Abstract. A Wind turbine is a wind energy converters tool into electrical energy. To optimize the electrical energy converted, it needs for further research on wind turbine process. In this research, the analysis part of wind turbine is rotor, which is the contacted part to the wind. Type of wind turbine that will be analyzed in this study is HAWT (Horizontal Axis Wind Turbine) type because this model is the most often used type and can produce great electrical energy. This research construct a model of the air flow field form of wind turbine rotor and solve these problems by using the finite volume method. Model simulation process will be done by using MATLAB and FLUENT software. The analysis was performed with the variation initial velocity level of wind. It is 3 m/s, 5 m/s, and 7 m/s. The simulation results showed that the velocity of rotation wind turbine rotor blade higher when the initial wind velocity increases. Beside that, the result is when the initial wind velocity of 7 m/s and 5 m/s, the velocity of rotation wind turbine rotor blade tend to be more stable. With 5 m/s of wind velocity to wind turbine rotor, The difference between an average direct calculation and a SOR iterative calculation is obtained the value of relative error less than 0.1%. it is 0.079%. So the finite volume method of numerical methods is effective to solve this problem. Key Words : Electrical Energy, Finite Volume Method, Velocity, Wind Turbine,.
ANALISIS SIRKULASI UDARA PADA TANAMAN KOPI BERDASARKAN POLA TANAM GRAF PRISMA DAN TINGKAT KEMIRINGAN BATANG MENGGUNAKAN METODE VOLUME HINGGA P, Moch. Avel Romanza; Dafik, D; Fatahillah, Arif
KadikmA Vol 6, No 2 (2015)
Publisher : KadikmA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (550.916 KB)

Abstract

Abstract. Coffee bean is one of the superior agricultural products in Indonesia. One of the factors that affect the productivity is the cropping pattern of coffee plants. A well organized cropping pattern will make a well organized air circulation which affects the productivity of coffee beans. In this research, a model of air circulation is built based on prism graph for the cropping pattern and solved by using Finite Volume Method (FVM). The model simulation process is done by using MATLAB and FLUENT software. The model is built according to the slope of stem and the temperature of coffee plantation. The temporary result of the research shows that prism graph cropping pattern results good air circulation and also gives good effect to the air circulation around the coffee plantation. The same thing happens to the effect of the slope of stem, the more upright the coffee plant is, the better air circulation and vice versa. Key Words : Coffee plants, air circulation, prism graph, Finite Volume Method (FVM)
ANALISIS KECEPATAN ALIRAN UDARA PADA GEDUNG BERTINGKAT KARENA PENGARUH PENGHALANG DI DEPANNYA Susanto, Joni; Dafik, D; Fatahillah, Arif
KadikmA Vol 6, No 2 (2015)
Publisher : KadikmA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (423.045 KB)

Abstract

Abstract. The air flow velocity is one of many factor which should be considered in building a skyscraper. This is because the air flow velocity can affect the comfort of house room. The method which is used to solve the air flow analysis is a finite volume withusing Quadratic Upwind Interpolation Convective Kinematics (QUICK) discretization technique. Finite volume method is used to obtain a mathematical model of air flow velocity and QUICK is used to discretize it such that it will yield a linier equation system in a matrix of size (mn)×(mn). To simulate the air flow analysis is used Matlab and Fluent softwares. The result show that if the barrier is higher the air flow velocity will be decreased and if the distance of barrier is longerthe air flow velocity will be increased. It can be conclude that this analysis can be applied to have a comfort house room. Key Words : air flow velocity,mathematic model, finite volume method,QUICK
A Super (A,D)-Bm-Antimagic Total Covering of Ageneralized Amalgamation of Fan Graphs Agustin, Ika Hesti; Dafik, Dafik; Latifah, Siti; Prihandini, Rafiantika Megahnia
CAUCHY Vol 4, No 4 (2017): CAUCHY
Publisher : Mathematics Department, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (630.746 KB) | DOI: 10.18860/ca.v4i4.3758

Abstract

All graph in this paper are finite, simple and undirected. Let G, H be two graphs. A graph G is said to be an (a,d)-H-antimagic total graph if there exist a bijective function  such that for all subgraphs H’ isomorphic to H, the total H-weights form an arithmetic progression  where a, d 0 are integers and m is the number of all subgraphs H’ isomorphic to H. An (a, d)-H-antimagic total labeling f is called super if the smallest labels appear in the vertices. In this paper, we will study a super (a, d)-Bm-antimagicness of a connected and disconnected generalized amalgamation of fan graphs on which a path is a terminal.
On The Local Metric Dimension of Line Graph of Special Graph Marsidi, Marsidi; Dafik, Dafik; Hesti Agustin, Ika; Alfarisi, Ridho
CAUCHY Vol 4, No 3 (2016): CAUCHY
Publisher : Mathematics Department, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (917.503 KB) | DOI: 10.18860/ca.v4i3.3694

Abstract

Let G be a simple, nontrivial, and connected graph.  is a representation of an ordered set of k distinct vertices in a nontrivial connected graph G. The metric code of a vertex v, where , the ordered  of k-vector is representations of v with respect to W, where  is the distance between the vertices v and wi for 1≤ i ≤k.  Furthermore, the set W is called a local resolving set of G if  for every pair u,v of adjacent vertices of G. The local metric dimension ldim(G) is minimum cardinality of W. The local metric dimension exists for every nontrivial connected graph G. In this paper, we study the local metric dimension of line graph of special graphs , namely path, cycle, generalized star, and wheel. The line graph L(G) of a graph G has a vertex for each edge of G, and two vertices in L(G) are adjacent if and only if the corresponding edges in G have a vertex in common.
On The Metric Dimension of Some Operation Graphs Marsidi, Marsidi; Agustin, Ika Hesti; Dafik, Dafik; Alfarisi, Ridho; Siswono, Hendrik
CAUCHY Vol 5, No 3 (2018): CAUCHY
Publisher : Mathematics Department, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (782.001 KB) | DOI: 10.18860/ca.v5i3.5331

Abstract

Let  be a simple, finite, and connected graph. An ordered set of vertices of a nontrivial connected graph  is  and the -vector  represent vertex  that respect to , where  and  is the distance between vertex  and  for . The set  called a resolving set for  if different vertex of  have different representations that respect to . The minimum of cardinality of resolving set of G is the metric dimension of , denoted by . In this paper, we give the local metric dimension of some operation graphs such as joint graph , amalgamation of parachute, amalgamation of fan, and .
On the Local Adjacency Metric Dimension of Generalized Petersen Graphs Marsidi, Marsidi; Dafik, Dafik; Agustin, Ika Hesti; Alfarisi, Ridho
CAUCHY Vol 6, No 1 (2019): CAUCHY: Jurnal Matematika Murni dan Aplikasi
Publisher : Mathematics Department, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/ca.v6i1.6487

Abstract

The local adjacency metric dimension is one of graph topic. Suppose there are three neighboring vertex , ,  in path . Path  is called local if  where each has representation: a is not equals  and  may equals to . Let’s say, .  For an order set of vertices , the adjacency representation of  with respect to  is the ordered -tuple , where  represents the adjacency distance . The distance  defined by 0 if , 1 if  adjacent with , and 2 if  does not adjacent with . The set  is a local adjacency resolving set of  if for every two distinct vertices ,  and  adjacent with y then . A minimum local adjacency resolving set in  is called local adjacency metric basis. The cardinality of vertices in the basis is a local adjacency metric dimension of , denoted by . Next, we investigate the local adjacency metric dimension of generalized petersen graph.
Co-Authors A Arynda A H Rahmatillah A. Y. Harsya Adawiyah, R Adelia Putri Liowardani Agnes Ika Nurvitaningrum, Agnes Ika Agrita Kanty Purnapraja, Agrita Kanty Agustina M. Agustina Muharromah, Agustina Ahmad Adi Ahmad Musyaffa' Hikamuddin Ahmad Syaiful Rizal, Ahmad Syaiful Aldyon Restu Azkarahman Alfian Futuhul Hadi Alfian Yulia Harsya, Alfian Yulia Alfin Nabila Taufik Alfiyantiningsih, Nur Amalina, Putri Nur Anindyta Anggirena Wulandari Anisa Meilinda Wardani Annadhifi, Muhammad Ilham Nurfaizi Antonius Cahya Prihandoko Arif Fatahillah Arika I. Kristiana Arika Indah Kriatiana Arika Indah Kristiana Arnasyitha Yulianti S, Arnasyitha Arnasyitha Yulianti Soelistya ArRuhimat, QurrotaA’yuniArRuhimat A’yuni Artanty Nastiti, Artanty Asy’ari, Muhammad Lutfi Awalin, Qonita Ilmi Aziza, Adinda Putri A’yun, Qurrotul Bawono, Darian Aji Bayu Aprilianto Brahmanto, Juanda Cangul, Ismail Naci Desak Made Dwika Saniriati Desi Febriani Putri Desi Febriani Putri Desy Tri Puspasari Desy Tri Puspasari, Desy Tri Devi Eka Wardani M, Devi Eka Dewi ANGGRAENI Dewy, Elitta P Dian Anita Hadi, Dian Anita Didik Sugeng Didin Trisnani, Didin Dina Tri Djoni Budi Sumarno Dliou, Kamal Dwi Agustin Retnowardani Dyna Probo Mukti Elok Asmaul Husna Elsa Yuli Kurniawati Elsa Yuli Kurniawati Endang Wahyuningrum Ermita R Albirri Ermita Rizki Albirri Ervin Eka Riastutik, Ervin Eka Ervin Oktavianingtyas Excelsa Suli Wildhatul Jannah Farah Rezita Nurtaatti, Farah Rezita Faruq, Fathulloh fatahillah, arief Fatoni, Muhamad Faizal Fia Cholidah, Fia Firdausiyah, Iftitahul Firman Firman Fitri Wulandari Gembong A. W. Hani'ah Zakin Harianto Setiawan, Harianto Hendry Dwi Saputro Herninda Lucky Oktaviana Hilmiyah Hanani Hobri Husain, Sharifah Kartini Said I H Agustin I H. Agustin I Ikhwandi I M Tirta I Made Tirta I Made Tirta Ida Ariska Ika Hesti A. Ika Hesti Agustin, Ika Hesti Ika Mareta Imanul Umar Hawari Imro’atun Rofikah Indar Setiani Indi Izzah Makhfduloh Inge Yosanda Arianti, Inge Yosanda Irma Azizah Irma Azizah, Irma Istamala Idha Retnoningsih Jackson P Mairing Jannah, Excelsa Suli Wildhatul Jesi Irwanto, Jesi Joni Susanto, Joni K Kasturi K Khasan, K Karinda Rizqy Aprilia, Karinda Rizqy Khilyah Munawaroh Kholifatu Rosyidah Kholifatur Rosyidah Khusnul, Agustina Hotimatus Kiki Kurdianto Kiswara Agung Santoso Kurniawati, Elsa Yuli Kusbudiono Kusbudiono, Kusbudiono Laili, Nuryatul Laily Anisa Nurhidayati Liliek Susilowati Liowardani, Adelia Putri Lubis Muzaki Lusia Dewi Minarti Lusia Dewi Minarti M. Wildan Athoillah Makhfudloh, I I Mardiyah, Fitriyatul Marsidi Marsidi Maylisa, Ika Nur Miftahur Roifah Millatuz Zahroh, Millatuz Moch. Avel Romanza P, Moch. Avel Romanza Mohammad Fadli Rahman Mohanapriya, N. Muhammad Lutfi Asy’ari Muhlisatul Mahmudah, Muhlisatul Mursyidah, Indah Lutfiyatul Murtini Murtini, Murtini N Maylisa N Y. Sari Nabilah Ayu Az-Zahra Nafisa Afwa Sania Nindya Laksmita Dewi, Nindya Laksmita Novalita Anjelia Novian Nur Fatihah Novita Cahya Mahendra Novita Sana Susanti Novri Anggraeni, Novri Nur Alfiyantiningsih Nur Asia Jamil, Nur Asia Nurcholif Diah Sri Lestari Nuris Hisan Nazula Nuwaila Izzatul Muttaqi O A Safiati O. A. Safiati Ojat Darojat Okti Anis Safiati Permatasari, Putri Ayu Pratiwi, Putri Indah Prihandini, R M Prihandini, Rafiantika Megahnia Prihandini, Rafiantika Megahniah Prihandini, RM Prihandoko, AC Prof. Dr.I Nengah Suparta,M.Si . Pujiyanto, Arif Putra Mahendratama Sasongko, Tito Putri Rizky H.P, Putri Rizky Q Qoriatul QurrotaA’yuniArRuhimat A’yuni ArRuhimat Qurrotul A’yun Quthrotul Aini Fuidah R M Prihandini R Ratih R Rohmatullah R. Humaizah Rafiantika M Rafiantika Megahnia Prihandini Rahmadani, M R Rahman, Md. Saidur Randhi N. Darmawan, Randhi N. Randi Pratama Murtikusuma Ratna Syafitri Reza Mega Ardhilia Ridho Alfarisi Ridho Alfarisi, Ridho Ridlo, Zainur Rasyid Riniatul Nur Wahidah Rizki Aulia Akbar Robiatul Adawiyah Robiatul Adawiyah Robiatul Adawiyah Rukmana Sholehah, Rukmana S Slamin S Suciati S Suharto S Sunardi S Susanto S. Chususiyah S. M. Yunika Saddam Hussen Safira Izza Ghafrina Safira Izza Ghafrina Saifudin, Ilham Saniriati, Desak Made Dwika Santoso, Aji Mansur Septory, Brian Juned Shapbian Novindasari, Shapbian Shela Okta Grefina, Shela Okta Sherly Citra Wuni, Sherly Citra Sholihah, Siti Mar’atus Sih Muhni Yunika, Sih Muhni Siska Aprilia Hardiyanti Siska Binastuti Siska Binastuti, Siska Siswono, Hendrik Siti Aminatus Solehah Siti Latifah Siti Mar’atus Sholihah Soleh Chudin Sri Tresnaningsih Sufirman Sufirman Sulistio, Wahyu Sullystiawati, Lusia Herni Sunder, R. Suntusia Suntusia Suparti Supratiningsih Supratiningsih Susanto Susanto Susanto Susanto Susi Setiawani Tanti Windartini, Tanti Tasrip Rudiono Thoyibah, Fifi Tommi Sanjaya Putra Toto Bara Setiawan Tri Dyah Prastiti Ulul Azmi Umi Azizah Anwar Venkatachalam, M. Viantasari, Erwinda Viqedina Rizky Noviyanti Vutikatul Nur Rohmah Wahidah, Riniatul Nur Wahyu Lestari Wahyu Nikmatus Sholihah Wardani, Putu Liana Weny Wijayanti, Weny Wicha Dwi Wicha Dwi Vikade, Wicha Dwi WIHARDJO, EDY Wijayanti, Elsy Y Yunita Yanuarsih, Elly Yessy Eki Fajar Reksi Yuli Kurniawati, Elsa Yuli Nur Azizah, Yuli Nur Z R Ridlo Zainur Rasyid Ridlo