Sundanese Ethnomathematics: Mathematical Activities in Estimating, Measuring, and Making Patterns

Mathematics is a form of culture integrated in all aspects of society, wherever there are, including the sundanese ethnic communities. This enables the mathematical concepts embedded in cultural practices and recognizes that all people develop a special way of doing mathematics called ethnomathematics activities. Sundanese ethnomathematics is mathematics in sundanese culture implemented in community activities. Sundanese ethnic sundanese people living in the area of West Java Indonesia, speaking sundanese language, and having activities reflecting sundanese culture. Sundanese ethnomathematics in this study has three activities, namely estimating, measuring, and making patterns appearing in the activities in term of kibik (a unit for measuring volume), bata (a unit for measuring surface area), and path pihuntuan (a model of cane work).DOI: http://dx.doi.org/10.22342/jme.8.2.4055.185-19

Pemberian Intervensi Senam Lansia Pada Lansia Dengan Nyeri Lutut

Aging is a process of eliminating the network's ability to repair itself gradually. Elderly tend to get the decreased on the musculoskeletal system. The decreased of the musculoskeletal system is characterized by pain in the joints, for example the knee joint. Knee pain is a regenerative joint diseaseand also one signs and symptoms of osteoarthritis. One way to reduce the knee pain is using the non-pharmacologic therapy with elderly gymnastic. The purpose of this research is to provide elderly exercise intervention in older adults with knee pain to reduce the pain. The benefit of this research is to train the ability of muscles and joints to reduce the knee pain scale in the elderly. The method used a quantitative research design with experimental and one type of group pre-post test design. The population in this study were elderly men and women in the Social Rehabilitation Unit "Margo Mukti" Rembang District.The instrument used a VAS pain scale or Baourbanis and observation sheet. Sampling used a minimum number of samples for quantitative experimental studies as many as 15respondents. Implementation of the elderly gymnastic can be done in the morning before breakfast for about 15 - 45 minutes. The research was conducted on February 27, 2012 until March 3, 2012 at the Social Rehabilitation Unit "Margo Mukti” Rembang District. This study used a statistical test of Wilcoxon. The resultof this research showed that the significance p-value 0.001, which means the sig <α = (0.05). It was concluded that elderly gymnastic are effectively overcome the knee pain in elderly at the Social Rehabilitation Unit"Margo Mukti" Rembang District and this elderly gymnastic is expected to help community to reduce the knee joint pai

DETERMINAN KEBIJAKAN DIVIDEN DI INDONESIA

The purpose of this research is to examine dividend policy determinants. The independent variables are board characteristics, disclosure transparency, shareholders transparency, firm size, firm profitability and firm growth and the dependent variable is dividend policy This research uses secondary data from financial reports and annual reports from banking firms that listed in Bursa Efek Indonesia. This research uses purposive sampling method. Samples that choosen is banking firms that published their annual reports and financial reports in 2012-2015 and paid dividends. This research uses regression analysis method to examine the relation between independent variables and dependent variable. The results shows firm size and firm profitability have positive relation to dividend policy, disclosure transparency has negative relation to dividend policy. This research also shows that board characteristics, shareholder transparency and firms growth do not have any relation to dividend policy

Uji Linearitas Data TIME Series Dengan Reset Test

Tulisan ini membahas prosedur pengujian linearitas data time series menggunakan uji RESET test versi Ramsey dan Lagrange Multiplier. Uji yang digunakan adalah uji yang telah diperbaiki dengan pembentukan komponen utama dari bentuk polinomial pada persamaan uji. Prosedur uji kemudian diterapkan pada data simulasi untuk model linear AR(2), AR(2) dengan outlier dan model nonlinear LSTAR(2) dengan n = 200. Pengujian menunjukkan hasil yang mirip diantara kedua uji dimana data simulasi dari model linear tidak menjamin kelinearan, sedangkan data simulasi model nonlinear secara signifikan berbentuk nonlinear pada taraf 5%

Pemodelan Jaringan Syaraf Tiruan Dengan Algoritma One Step Secant Backpropagation Dalam Return Kurs Rupiah Terhadap Dolar Amerika Serikat

Exchange rate is the currency value of a country that is expressed by the value of another country's currency. Changes in exchange rates indicate risks or uncertainties that would return obtained by investors. With the predicted value of return, investors can make informed decisions when to sell or buy foreign currency to gain an advantage. Forecasting of return values can be using artificial neural network with backpropagation. In backpropagation procedure, data is divided into two pairs, namely training data for training process and testing data for testing process. In the training process, the network is trained to minimize the MSE. One of optimization method that can minimize the MSE is one step secant backpropagation. In this research, the data used is the return of the exchange rate of rupiah against US dollar in the period of January 1st, 2015 until December 31st, 2015. The results were obtained architecture best model neural network that was built from 8 neurons in the hidden layer, 1 unit of input layer with input xt-1 and 1 unit of output layer. The activation function used in the hidden layer and output layer are bipolar sigmoid and linear, respectively. The architecture chosen based on the smallest MSE of testing data is 0.0014. After obtaining the best model, data is foreseen in the period of November 2016 produce MAPE=153.23%

Dinamika Transformasi Gelombang Menggunakan Model Cms-wave (Coastal Modelling System - Wave) Di Pantai Boom Tuban, Jawa Timur

Gelombang merupakan salah satu parameter oseanografi yang mempengaruhi dinamika pantai. Gelombang laut menjalar menuju pantai akan mengalami transformasi yang berpengaruh terhadap tinggi dan arah gelombang serta distribusi energi gelombang di sepanjang pantai. Tujuan penelitian ini adalah mengkaji dinamika transformasi gelombang di Pantai Boom Tuban, Jawa Timur, dengan menggunakan software CMS – Wave (Coastal Modelling System – Wave). Penelitian dilaksanakan pada tanggal 27 – 29 Juni 2014 di Pantai Boom Tuban, Jawa Timur. Data primer berupa pengukuran gelombang laut menggunakan palem gelombang sedangkan data sekunder berupa data angin 5 tahun (2009-2013) dan peta Lingkungan Pantai Indonesia wilayah Tuban tahun 2005. Metode yang digunakan dalam penelitian ini adalah kuantitatif. Peramalan gelombang laut menggunakan metode SMB (Sverdrup Munk Bretchneider) dengan inputan data angin. Penjalaran gelombang menuju pantai disimulasikan dengan model CMS – Wave (Coastal Modelling System – Wave).Berdasarkan hasil perhitungan data gelombang laut lapangan diketahui bahwa gelombang di Pantai Boom Tuban, Jawa Timur, merupakan gelombang laut transisi dengan Hs sebesar 0,33 meter dan Ts sebesar 6,23 detik. Berdasarkan hasil peramalan gelombang laut, pada musim barat didapatkan Hs 0,21 meter dan Ts 1,96 detik, pada musim peralihan I didapatkan Hs 0,17 meter dan Ts 1,95 detik, pada musim timur didapatkan Hs 0,20 meter dan Ts 2,22 detik, lalu pada musim peralihan II didapatkan Hs 0,19 meter dan Ts 2,16 detik. Transformasi gelombang laut yaitu refraksi dan difraksi dapat dilihat berdasarkan peta tinggi gelombang tiap musim dari hasil pemodelan