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INDONESIA
MATEMATIKA
Published by Universitas Diponegoro
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
Mathematics
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Articles 7 Documents
 1 
Search results for , issue "Vol 17, No 2 (2014): Jurnal Matematika" : 7 Documents clear
OPTIMALISASI LAMA PEMANFAATAN AREA TEPI DANAU BUATAN SEBAGAI FASILITAS REKREASI DI LINGKUNGAN PERUMAHAN Alifiani, Amalia; Supriyadi, Bambang; Prianto, Eddy; Irawanto, Bambang
MATEMATIKA Vol 17, No 2 (2014): Jurnal Matematika
Publisher : MATEMATIKA

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Abstract

Much residential  built by developers who are equipped with an artificial lake as its attractiveness. Recreation area in a residential environment promotes the maintenance of security and generally are closed. Likely users recreation area is a internal  residential community and has more  the long term to do recreation activities. To take advantage of the length time of community recreation activities it could take effective visit, but in fact the use of recreation area on the time of artificial lake tends to be limited due to security In this paper to determine the optimal value of long utilization of the limited time constrains of use for users from within and outside the housing. Linear Programming method to use for analysis the three approach maximal visit time from deferent time, visit time 12 our, 15 our and 24 our,  obtained the higher of visitation time the longer  utilization.The users most optimal to use recreation area the community from internal residential because it is influenced by environment.
MODEL OPTIMASI ECONOMIC PRODUCTION QUANTITY DENGAN SISTEM DELIVERY ORDER Puspita, Nikken Prima; Khabibah, Siti; Ratnasari, Lucia
MATEMATIKA Vol 17, No 2 (2014): Jurnal Matematika
Publisher : MATEMATIKA

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Abstract

The aims of Economic Production Quantity models are for manage the production schedule and product inventory. The first Economic Production Quantity model developed by E.W Taft on 1918. Taft make some asumption such as daily demand rate constant, daily production rate constant, not stockout allowed, single item product and daily production rate are more than daily demand rate. On the process of delivery product,  there is not transportation cost. Pasandideh dan Niaki on 2010 was constructed an Economic Production Quantity models with discrete delivery order. In this research we discussed the Economic Production Quantity model which products delivered by multiple palet system and with transportation cost.
PELABELAN GRACEFUL GENAP BARU PADA GRAF CmPn Ratnasari, Lucia; Surarso, Bayu; Utomo, Robertus Heri Soelistyo
MATEMATIKA Vol 17, No 2 (2014): Jurnal Matematika
Publisher : MATEMATIKA

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Abstract

Pelabelan Graceful pada graf dengan q sisi merupakan pemetaan injektif   , yang mengakibatkan pemetaan , yang didefinisikan dengan  bersifat bijektif. Graf yang memenuhi pelabelan graceful disebut graf graceful. T. Mahalaksmi Senthil Kumar, T. Abarna Parthiban dan T. Vanadhi [4], membuktikan graf CmÈPn merupakan graf graceful genap untuk m ganjil yang memenuhi kondisi tertentu. Marry U dan Saranya D [2], membuktikan bahwa graf CmÈPn merupakan graf graceful genap untuk m genap yang memenuhi kondisi tertentu. Pelabelan graceful genap didefinisikan sebagai pemetaan injektif  yang mengakibatkan pemetaan , yang didefinisikan  bersifat bijektif.  Tetapi pada pembuktian [4] dan [2], syarat injektif dan bijektif fungsinya tidak terpenuhi. Artikel ini mendefinisikan kembali pelabelan graceful genap pada graf CmÈPn sehingga syarat injektif dan bijektif fungsinya terpenuhi.  
ESSENTIALLY SMALL RIEMANN SUMS FUNGSI TERINTEGRAL HENSTOCK-DUNFORD PADA [a,b] ., Solikhin; Sumanto, Y.D; Khabibah, Siti
MATEMATIKA Vol 17, No 2 (2014): Jurnal Matematika
Publisher : MATEMATIKA

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Abstract

In this paper we study Henstock-Dunford integral on [a,b]. We discuss some properties of the integrable. We shall define essentially small Riemann sums (ESRS)  and show that it is necessary and sufficient condition for function to be Henstock-Dunford integral on [a,b].
PENYELESAIAN MODEL DISTRIBUSI SUHU BUMI DI SEKITAR SUMUR PANAS BUMI DENGAN METODE KOEFISIEN TAK TENTU Niswah, Lutfiyatun; ., Widowati; ., Djuwandi
MATEMATIKA Vol 17, No 2 (2014): Jurnal Matematika
Publisher : MATEMATIKA

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Abstract

Mathematical model in this paper describes the formation temperature distribution related to the process of heat transfer in geothermal wellbore. The model of formation temperature is based on the single thermal conduction equation. The form of the model is ordinary differential equation. Further, we derived an analytical solution with the method of undetermined coeffisient. The simulation  is done to determine the model’s behavior based on the secondary data. Based  on the simulation result is found that if the increasing depth hence the temperature increases.
KELAS-KELAS BCI-ALJABAR DAN HUBUNGANNYA SATU DENGAN YANG LAIN ., Winarsih; ., Suryoto
MATEMATIKA Vol 17, No 2 (2014): Jurnal Matematika
Publisher : MATEMATIKA

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Abstract

Several classes of BCI-algebras as the class of weakly implicative BCI-algebras, BCK-algebras, medial BCI-algebras, branchwise implicative BCI-algebras and branchwise commutative BCI-algebras have relation one another. A branchwise implicative BCI-algebras is a class of BCI-algebras which to fulfill condition of branchwise implicative. By using characters of the class of BCK-algebras and element of the class of medial BCI-algebras, we investigate relations between branchwise implicative BCI-algebras exist with others classes of the class of BCI-algebras as the class of weakly implicative BCI-algebras and branchwise commutative BCI-algebras.
ENDOMORFISMA RIGID DAN COMPATIBLE PADA RING DERET PANGKAT TERGENERALISASI MIRING Faisol, Ahmad
MATEMATIKA Vol 17, No 2 (2014): Jurnal Matematika
Publisher : MATEMATIKA

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Abstract

Given a ring R, a strictly ordered monoid and monoid homomorphism  .  Constructed the set of all function from S to R whose support is artinian and narrow, with pointwise addition and the skew convolution multiplication, it becomes a ring called the skew generalized power series rings (SGPSR)  and denoted by . A ring R is called  reduced if it contains no nonzero nilpotent elements, reversible if for all ,  implies .  Let  be a ring endomorphism,  if for ,  implies , then  is called rigid. If for all ,  if and only if , then  is called compatible.  In this paper we will discuss about the constructing of SGPSR homomorphism.  Beside that, we also discuss about rigid and compatible endomorphism on SGPSR .

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