Articles
Desain dan Purwarupa Fuzzy Logic Control untuk Pengendalian Suhu Ruangan
Wahab, Faisal;
Sumardiono, Arif;
Al Tahtawi, Adnan Rafi;
Mulayari, Agus Faisal Aziz
JTERA (Jurnal Teknologi Rekayasa) Vol 2, No 1: June 2017
Publisher : Politeknik Sukabumi
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DOI: 10.31544/jtera.v2.i1.2017.1-8
Fuzzy Logic Control (FLC) merupakan salah satu metode pengendalian sistem yang saat ini banyak digunakan di beberapa disiplin ilmu, khususnya di bidang sistem kendali. Dalam perancangan FLC tidak diperlukan model matematis dari sistem yang akan dikendalikan. Hal ini menjadi salah satu keunggulan FLC sehingga perancangan pengendali lebih mudah dilakukan dengan hanya mengandalkan aturan logika. Pada makalah ini, akan dirancang FLC untuk sistem pendingin ruangan dan direalisasikan dalam bentuk prototype untuk kesederhanaan perancangan. Sistem ini memiliki masukan suhu ruangan dan banyaknya orang di ruangan, sedangkan keluarannya adalah tingkat pendinginan ruangan  tersebut. Pengujian sistem ini dilakukan dengan membandingkan hasil keluaran pengendali melalui simulasi Fuzzy Logic Toolbox yang tersedia pada MATLAB. Dua unit purwarupa dirancang dengan sensor masukan yang berbeda sebagai perbandingan. Hasilnya menunjukkan bahwa purwarupa sistem pertama dan kedua mampu mengendalikan suhu ruangan dengan rata-rata kesalahan berturut-turut 1,31% dan 4,06% jika dibandingkan dengan simulasi MATLAB.
Perancangan dan Realisasi Anemometer Digital untuk Aplikasi Sistem Peringatan Dini
Mahar, Muhammad Lahnan;
Al Tahtawi, Adnan Rafi;
Sudrajat, Sudrajat
JTERA (Jurnal Teknologi Rekayasa) Vol 2, No 2: December 2017
Publisher : Politeknik Sukabumi
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DOI: 10.31544/jtera.v2.i2.2017.91-96
Makalah ini menyajikan perancangan dan realisasi pendeteksi kecepatan angin digital yang dikenal dengan Anemometer untuk sistem peringatan dini di rumah. Perangkat keras dirancang menggunakan mikrokontroler sebagai perangkat utama yang berfungsi untuk menghitung kecepatan angin. Perangkat ini menggunakan sensor rotary encoder yang berfungsi mengukur kecepatan angin. Perangkat antarmuka yang digunakan yaitu dot matrix, indikator LED, dan buzzer. Hasil pengujian menggunakan kipas angin menunjukkan Anemometer digital yang dirancang mampu mendeteksi kecepatan angin dengan baik dan memiliki kesalahan relatif sebesar 1,18% pada jarak 10 cm, 1,41% pada jarak 30 cm, 1,55% pada jarak 50 cm, dan 2,44% pada jarak 70 cm jika dibandingkan dengan Anemometer komersial. Hasil pengujian angin alami menunjukkan alat ini juga mampu mendeteksi kecepatan angin dengan rata-rata kesalahan relatif sebesar 21,21% dan 18,80% dibandingkan Anemometer BMKG pada dua hari berbeda. Nilai kesalahan relatif ini lebih besar jika dibandingkan dengan pengujian menggunakan angin buatan. Hal ini terjadi karena kondisi perubahan arah angin alami yang tiba-tiba tidak dapat terdeteksi alat ini. Namun demikian, perangkat ini berguna untuk peralatan rumah sebagai sistem peringatan dini.
PENGARUH DUKUNGAN KELUARGA TERHADAP PEMBERIAN MAKANAN PENDAMPING ASI (MP-ASI) PADA BAYI USIA KURANG DARI 6 BULAN
Ekasari, Tutik
JI-KES (Jurnal Ilmu Kesehatan) Vol 1, No 2 (2018): JI-KES (Jurnal Ilmu Kesehatan)
Publisher : LPPM STIKes Hafshawaty Pesantren Zainul Hasan Probolinggo
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DOI: 10.33006/ji-kes.v1i2.82
AbstrakMakanan pendamping ASI merupakan makanan peralihan dari ASI ke makanan keluarga. Pengenalan dan pemberian MP-ASI harus dilakukan secara bertahap. Cakupan pemberian MP ASI pada anak usia 6-24 bulan di Kabupaten Probolinggo tahun 2014 adalah 40,43% dan turun pada tahun 2015 yaitu 27,43% tetapi masih belum mencapai target sebesar 100%. Berdasarkan survei pendahuluan melalui wawancara kepada 15 ibu dengan bayi umur <6 bulan, ternyata mayoritas ibu tidak memberikan ASI Ekslusif (60%). Hal ini dikarenakan masih banyak ibu yang memberikan MP-ASI pada bayinya yang berusia <6 bulan. Tujuan penelitian ini adalah menganalisis pengaruh dukungan keluarga terhadap pemberian makanan pendamping ASI (MP-ASI) pada bayi usia <6 bulan. Desain penelitian ini adalah analitik korelasional dengan pendekatan crosssectional. Populasi adalah semua ibu dengan bayi umur <6 bulan sebanyak 66 orang. Teknik pengambilan sampel dengan simple random sampling. Sampel adalah sebagian ibu dengan bayi umur <6 bulan yaitu sebanyak 40 orang. Uji statistik menggunakan Chi Square. Hasil penelitian ini menginformasikan 26  ibu (65%)   memberikan MP ASI pada bayi usia <6 bulan. Hasil uji Chi Square diperoleh pvalue 0,002 artinya ada pengaruh dukungan keluarga terhadap pemberian makanan pendamping ASI (MP-ASI) pada bayi usia <6 bulan. Disarankan petugas kesehatan lebih optimal dalam penyuluhan pentingnya ASI Eksklusif. Kata kunci : dukungan keluarga, MP-ASI, bayi usia kurang 6 bulan AbstractASI complementary food is a transition food from breastfeeding to family food. The identification and distribution of MP-ASI must be done gradually. The scope of MP ASI distribution for children aged 6-24 months in Probolinggo was 40.43% during 2014 and decreased to 27.43% in 2015, but it still did not reach the target of 100%. Based on the preliminary survey, interview to15 mothers whoes babies aged < 6 months old did not give their exclusive breastfeeding (60%). This is because there are still many mothers who give MP-ASI to their babies aged < 6 months old. The purpose of this study was to analyze the effect of family support on the distribution of complementary foods for breastfeeding to infants aged <6 months. The design used in this study was correlational analysis with crosssectional approach. The population was all mothers whose babies aged < 6 months, 66 people. The sampling technique is simple random sampling. The sample is some mothers whose babies aged <6 months, 40 people. The statistical test used chi square. The result of this study was 26 ( 65%) mothers gave MP ASI to babies  aged <6 months.The chi square test resulted pvalue 0.002 means that there was influence of family support on complementary feeding of ASI (MP-ASI) for babies aged <6 months. It is expected that health workers optimize in providing counseling about the importance of exclusive breastfeeding.Keyword : family support, MP ASI, babies less than 6 months old
ENKRIPSI CITRA DIGITAL MENGGUNAKAN KOMBINASI ALGORITME HILL CIPHER DAN CHAOS MAP DENGAN PENERAPAN TEKNIK SELEKTIF PADA BIT MSB
Ratnasari, Devi;
Sejati, Hajar Puji
Jurnal Teknologi Technoscientia Vol 10, No 1 (2017): Vol 10 No 1 Agustus 017
Publisher : IST AKPRIND YOGYAKARTA
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This paper represents a digital image encryption algorithm using a combination of hill cipher and chaos map algorithms. The hill cipher algorithm is one of the coding techniques by applying a square matrix as an encryption key. In this paper, the key matrix used is a 3x3 invertible matrix. While chaos map technique chosen is Logistic Map technique as a random number generator that will be used as keystream. Application of selective encryption techniques to MSB bits (Most Significant Bit) is also used to reduce computing by only performing operations on four major bits of each RGB pixel (Red, Green and Blue). To encrypt, an image is first mapped based on RGB color components (Red, Green and Blue) and then encrypted using a hill cipher key matrix. The encryption result on each RGB channel is then selected four bits MSB from each pixel and then XOR with keystream as a result from Logistic Map. Experimental results performed on multiple color images show that the image can be succesfully encrypted. It can be seen from the resulting histogram is flat on each RGB channel of the encrypted image, the average value of entropy is 7.99 and the correlation value is close to 0.
PENGARUH STRUKTUR AKTIVA (ASSETS STRUCTURE), RETURN ON ASSETS DAN PERTUMBUHAN PENJUALAN (GROWTH OF SALES) TERHADAP STRUKTUR MODAL (CAPITAL STRUCTURE) PADA PERUSAHAAN PROPERTY DAN REAL ESTATE DI BURSA EFEK INDONESIA TAHUN 2011 â 2015
Chandra, Annie;
Tantoni, Wenny;
Villany, Windy;
Lubis, Mahmuddin Syah;
Akbar, Faisal
JURNAL RISET AKUNTANSI GOING CONCERN Vol 13, No 04 (2018): Going Concern Vol.13 No.4 Desember 2018
Publisher : JURNAL RISET AKUNTANSI GOING CONCERN
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The purpose of the research is to know and analyze the effect of Assets Structure, Return On Assets (ROA) and Growth of Sales on Debt Equity ratio. The research used some theories relating to Assets Structure, Return On Assets, Growth of Sales and Capital Structure. The research approach of this research was quantitative. This type of research is descriptive explanatory. The populations in this research are 53 companies of Property and Real Estate in the Indonesia Stock Exchange in the year of 2011-2015. The result of the research samples were 25 companies of Property and Real Estate in the Indonesia Stock Exchange in the year of 2011-2015. The result of the research as well as a conclusion from this research stated that partially Assets Structure had a negative significant effect on Capital Structure, Partially ROA and Growth of Sales did not have a significant effect on Capital Structure. Simultaneously, Assets Structure, Return On Assets and Growth of Sales had a significant effect on Capital Structure.Keyword: Assets Structure, Return On Assets, Growth of Sales, Debt to Equity Ratio
ANALISA SIMPANG BERSINYAL AKIBAT PEMBANGUNAN FLY OVER (AIR HITAM) KOTA SAMARINDA
FATAH, ABDUL
KURVA S JURNAL MAHASISWA Vol 4, No 2 (2014)
Publisher : KURVA S JURNAL MAHASISWA
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Persimpangan adalah bagian terpenting dari sistem jaringan jalan, yangsecara umum kapasitas persimpangan dapat dikontrol dengan mengendalikanvolume lalu lintas dalam sistem jaringan tersebut. Pada prinsipnya persimpanganadalah pertemuan dua atau lebih jaringan jalan.Fly Over (jalan layang) adalah jalan yang dibangun tidak sebidangmelayang untuk menghindari daerah/kawasan yang selalu menghadapipermasalahan kemacetan lalu lintas, melewati persilangan kereta api untukmeningkatkan keselamatan lalu lintas dan efisiensi, mengatasi hambatan karenakonflik dipersimpangan, melalui kawasan kumuh yang sulit ataupun melaluikawasan rawa-rawa.Ruas simpang Air Hitam merupakan salah satu persimpangan jalan diKota Samarinda yang berupa simpang bersinyal. Simpang tersebut merupakantitik pertemuan antara daerah pemukiman dengan daerah pertokoan danperkantoran di Samarinda.Metode pengambilan data dilakukan dengan cara survey volume lalulintas dan data geometrik jalan langsung dilapangan, sedangkan metode analisaperhitungan dengan menggunakan standar pedoman Manual Kapasitas JalanIndonesia (MKJI) Tahun 1997 oleh Departemen Pekerjaan Umum, DirektoratJenderal Bina Marga.Dari hasil perhitungan dapat disimpulkan bahwa, dari hasil kinerjapersimpangan saat ini didapatkan volume lalu lintas (Q) sebesar 1153 smp/jam,dan hasil analisa persimpangan setelah dibangun fly over (jalan lyang)didapatkan sekitar 32% kendaraan melewati fly over (jalan layang) sedangkan68% kendaraan lainnya melewati persimpangan Air Hitam. Dari hasil analisiskinerja simpang Air Hitam dalam kondisi sekarang, memang layak dibangun flyover (jalan layang) untuk mengurangi kemacetan yang sering dihadapi pada jamjamsibuk.
Antagonist Mold Exploration of Phytophthora spp. Pathogen on Apple Plant
Nugrahani, Meisarina;
Suharjono, Suharjono;
Endarto, Otto
Natural B, Journal of Health and Environmental Sciences Vol 1, No 3 (2012)
Publisher : Natural B, Journal of Health and Environmental Sciences
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DOI: 10.21776/ub.natural-b.2012.001.03.4
The attack of Phytophthora spp. caused the descrease of apple crops production up to 90 %. Some antagonist mold species are able to inhibit the growth of Phytophthora pathogens onapple crops. The objectives of this research were to identifify and to study the potency of antagonist mold for inhibite the growth of Phytophthora spp. pathogens on apple crops. The Phytophthora spp. were isolated using baiting method with apple fruit while antagonist molds were isolated by dilution method from soil sample of apple plantation. The inhibition assay of antagonist molds against Phytophthora was carried out by dual culture method. The isolated both of Phytophthora spp. and antagonist mold isolates were identified based on phenotype characters. The research result showed six molds namely Trichoderma sp.1, Trichoderma sp.4, Trichoderma sp.6, Aspergillus sp.2, Aspergillus sp.3 and Penicillium sp.1 which were antagonist on the Phytophthora pathogens onapple crops. Among the antagonist mold species, Trichoderma sp.6 had the highest inhibitory potency (62.95 %) while Penicillium sp.1 had the lowest inhibitory potency (28.82 %) against the growth of Phytophthora.Â
TERAPI TAWA UNTUK MENURUNKAN KECENDERUNGAN BURNOUT PADA GURU PENDAMPING ANAK BERKEBUTUHAN KHUSUS
Hayati, Risna;
Widyana, Rahma;
Sholichah, Mutingatu
HUMANITAS Vol 12, No 1: Vol 12 No 1 Feb 2015
Publisher : Universitas Ahmad Dahlan
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DOI: 10.26555/humanitas.v12i1.3832
AbstractThe purpose of this study was to determine the effect of laughter therapy in reducing the tendency of burnout in special needs teacher assistant. Subject of this research is 10 people with medium burnout indication, and five people of experimental group and five people of controlled group. The instrument used to measure the tendency of burnout with burnout propensity scale based on the symptoms of burnout. The experimental design uses design experimental quasi of pre-test and post-test of control group. Interventions given to subject are laugther therapy to experimental group for 8 meetings for two weeks. The quantitative analysis uses non parametric test with Mann Whitney test on gain score pre-post of experimental groups and controlled groups, its results Z value of -2,009 with significant level of 0,045 (p<0,05). The qualitative analysis is done by analyzing the result of interview and observation. The results show that there are significant differences in levels of burnout tendencies between the experimental group and the control group. The experimental group showed decrease of burnout indication while controlled group did not experience the decreasing.Keywords: burnout, laughter therapy, tendency of burnout
PENGARUH PERSEPSI REMAJA TENTANG KONFLIK ANTAR ORANG TUA DAN RESILIENSI TERHADAP DEPRESI DAN KECEMASAN
Sholichah, Mutingatu
HUMANITAS Vol 13, No 1: Vol. 13 No. 1 Februari 2016
Publisher : Universitas Ahmad Dahlan
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DOI: 10.26555/humanitas.v13i1.3837
AbstrackThe family plays a very important role in the development of children and adolescents, but not all families can provide an enabling environment for children to grow and develop optimally, such as family tinged conflicts between parents. This study was intended to findout the effects of adolescents perception about interparental conflict on anxiety and depression and the role of resilience to mediate those effects. Participants were 102 junior and senior highs school students aged 12-17 years old, who completed four scales used asinstruments in the study: T-Mas anxiety scale from Taylor, Kurcher Adolescent Depression Scale (KADS ) 11 items version, The Resilience Scale developed by Wagnild & Young, and The Children’s Perception of Interparental Conflict Scale (The CPIC) from Grych dan Finchman. Data obtained from 4 scales were analyzed with Path analysis. The findings indicated all hypotheses were accepted, that The Children’s Perception on Interparental Conflict shows a direct significant effect on anxiety as well as depression but the effect was not significant when mediated by resilience. Resilience plays an important role toprotect adolescence from adversity resulted from interparental conflict.Key words: anxiety, depression, internalizing problem,resilience
Peran Core Self Evaluation dalam Memprediksi Persipan Pensiun
Widyowati, Arini;
Hadjam, Noor Rochman
HUMANITAS Vol 11, No 2: Agustus 2014
Publisher : Universitas Ahmad Dahlan
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DOI: 10.26555/humanitas.v11i2.2332
ABSTRACTThis study examines the role of core self evaluation on predicting retirement preparation of pre retirement employees. This research involves 50 pre retirement employee of the exploration section of “ X Company” who get pre retirement program on 2013. Retirement preparation scale is used to measure effort of the employee’s retirement planning and core self evaluation is measured through core evaluation scale. Results show that there is no significant effect of core self evaluation on retirement preparation (F = 0.581, p = 0.679, p > 0.05). Based on data analysis it indicated that core self evaluation does not have effect on retirement preparation. It’s mean that core self evaluation could not predict employee’s retirement preparation. Thera are non-motivational and cultural factors that affect employees’ intention on retirement preparation.Keywords: core self evaluation, emotional stability, self esteem, self efficacy, locus of control, retirement preparation