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Hartono .
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The Use of Spot Image for Mangrove Inventory in Cimanuk Delta West Java, Indonesia Hartono .
Indonesian Journal of Geography Vol 26, No 28 (1994): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.2205

Abstract

This study deals with an application of SPOT satellite data for mangrove forest inventory in Cimauuk Delta West Java (Indonesia). Mangrove of the area (7100 Ha) has been gradually decreasing by human pressure especially for fisheries purposes. In fact, mangrove here is a result of afforestation since1960, with Rhizophora mucronata and R. apiculata as main planted species. Other species are Lunmitzera racemosa, Excoecaria agallocha, Bruguiera gymnorhiza and Avicennia which grow naturally. SPOT data were digitally analysed using Didactim software. A color composite image was analysed. A barycentric supervised classification and textural analysis were applie.d. As an intermediate data, infrared color aerial photographs at 1130,000 (1981) were interpreted manually.At least two mangrove types of mangrove could be identified from the SPOT image. Dense mangrove was found in Petak 7, Petak 8, Petak 9 and Petak 12. In the other Petaks, mangrove were less than 20% of their surface. Mangrove of Rhizophora in 26 Petaks covered 290 Ha only.
TOWARD A FULLY AND ABSOLUTELY RASTER-BASED EROSION MODELING BY USING RS AND GIS Bambang Sulistyo; Totok Gunawan; Hartono .; Projo Danoedoro
Indonesian Journal of Geography Vol 41, No 2 (2009): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.2269

Abstract

The erosion map data is one of important data used in planningconservation of degraded land. Generally, erosion data is predicted using a modelbecause to gain actual erosion requires much resource (timely, costly and labourintensive). USLE (Universal Soil Loss Equation) is one of existing erosion modelsapplied worlwide, including Indonesia. Nevertheless, erosion analysis conducted isbased on analysis using vector-based maps. This method involves simplification,either algorithms or procedures, and subject to subjectivity, so the result has highuncertainty. This article deals with the idea to build a fully raster-based erosionmodeling. Steps required to obtain raster-based data was highlighted as from thebeginning up to the model validation to get an absolute model. The integration ofremote sensing and GIS was inevitably usedfor the analysis.
EFEKTIVITAS WEBLOG DAN FACEBOOK TERINTEGRASI UNTUK PEMBELAJARAN VIRTUAL Hartono .
Jurnal Cakrawala Pendidikan CAKRAWALA PENDIDIKAN FEBRUARI 2014, TH. XXXIII, NO. 1
Publisher : LPMPP Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (648.386 KB) | DOI: 10.21831/cp.v1i1.1868

Abstract

Abstrak: Saat ini, banyak mahasiswa menghabiskan waktu mereka di internet. Mereka melakukan kegiatan seperti membuat blog, mengunduh, mengunggah, chatting, dan berinteraksi melalui facebook. Mahasiswa sekarang ini hidup dengan teknologi. Penelitian menunjukkan bahwa weblog dan facebook berpotensi mendukung belajar dan mengajar. Guru dan pendidik menggunakan kegiatan tersebut untuk meningkatkan kualitas belajar. Penelitian ini bertujuan untuk mengetahui efektivitas weblog dan facebook ketika digunakan secara integratif untuk melengkapi pembelajaran. Penelitian ini menggunakan metode kuantitatif deskriptif. Data dikumpulkan dari halaman-halaman facebook yang diamati dari responden yang mengambil mata kuliah Introduction of Second Language Acquisition (SLA). Data kemudian dideskripsikan dan dianalisis. Temuan penelitian menunjukkan bahwa weblog dan facebook dapat digunakan secara efektif untuk melengkapi kegiatan belajar. Kata Kunci: weblog, facebook, pembelajaran virtual
Uji Aktivitas Hipoglikemik Kombinasi Sirsak (Annona muricata) Dan Kelor (Moringa oleifera) Pada Tikus Diabetes Mellitus Yang Diinduksi Aloxan Activity test of Hypoglycemic of combination of sourson (Annona muricata) and moringa (Moringa oleifera) in Mi Hartono .; Agil Novianto - STIKES Nasional Surakarta
Indonesian Journal on Medical Science Vol 5 No 1 (2018): IJMS 2018
Publisher : Unit Penelitian dan Pengabdian Masyarakat Politeknik Kesehatan Bhakti Mulial

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (299.16 KB)

Abstract

Abstract: Increase level of glucose can lead oxidative sress which is sign by anormaly level of free radical on the body. Research from the past, soursop and moringa extract can reduce glucose level on the single dose.The study was conducted to determine the dose of optimal from a combination of extracts ethanol leaves soursop and moringa  more effective decrease of blood glucose levels in male mice wistar strain induced alloxan as compared to the provision of a single.The test as much as 36 mouse that were divided into eight groups, namely : normal, negative (CMC-Na), positive (glibenklamid), soursop extract 100 mg/bw (S 100), moringa extract 200 mg/bw (K100), SK 75:25, SK 50:50 and SK 25:75. All the test animals, except the normal induced aloxan on the day zero, followed by the test animals of the day 1st to 14th day. The data collected in the form of blood sugar levels of serum taken on the day zero, the 7th day and the 14th day and be measured using the method of GOD-PAP and measured of glucose level and analyzed to ge % hypoglycemic level. All data then analyzed with ANOVAextrac (Analysis of Varians) with (α = 0,05). A combination of extracts soursop and moringa  extract more effectively decreasing blood glucose levels significantly (p<0,05). Both extract single or combination can reduce glucose level. Dosages of optimal from a combination of extracts soursop and moringa  extract to decrease blood glucose levels, doses SK 50:50  with the percentage of a hypoglycemic level by 36,56 %> This combination more effectively decreasing blood glucose levels compared to each  single dose.Key word: sourson, morina, diabetic mellitus, aloxan Abstrak: Kenaikan kadar gula dalam darah akan memicu terjadinya kondisi stress oksidatif yang ditandai dengan ketidakseimbangan antara jumlah radikal bebas dan antioksidan. Penelitian yang terakhir dilakukan ekstrak sirsak dan kelor efektif untuk menurunkan kadar gula dalam darah namun penelitian yang ada masih dilakukan dalam bentuk tunggalnya dan belum pernah dilakukan kombinasi antar kedua ekstrak. Penelitian ini dilakukan untuk mengetahui pengaruh kombinasi ekstrak sirsak dan kelor terhap kadar glukosa pada tikus yang diinduksi aloxan. Hewan uji sebanyak 36 ekor yang dibagi menjadi 6 kelompok yaitu: kelompok normal (aquadest), kontrol negatif (CMC Na 0,5 %), kontrol positif (glibenclamide dosis 1,26 mg/kgBB), ekstrak sirsak 100 mg/kg BB, ekstrak kelor dosis 200 mg/kg BB dan kombinasi I (75:25), II (50:50)dan III (25:75) dalam persen. Semua Kelompok hewan uji, kecuali kelompok normal diinduksi aloksan dosis 150mg/kgBB pada hari ke-0, dilanjutkan dengan perlakuan hewan uji dari hari ke-1 sampai hari ke-14. Dilakukan pengambilan sampel darah pada hari ke-0, 7, dan 14 untuk anallisis kadar gula darah dan selanjutnya ditentukan besar % daya hipoglikemik. Penggunaan ekstrak daun kelor dan sisrsak baik itu tunggal dan kombinasi mampu menurunkan kadar glucose darah. Aktivitashipoglikemik optimal pada kombinasi sirsak kelor 50:50 dengan aktivitas hipoglikemik 36,56 %. Kombinasi ini memeberikan hasil yang lebih bagus dibandingkan bentuk tunggalnyaKata kunci : Sirsak, Kelor, Diabetes Mellitus, aloxan
PENGARUH BEBERAPA JENIS PAKAN TANAMAN KEHUTANAN TERHADAP KUALITAS DAN KUANTITAS KOKON ULAT SUTERA EMAS (Cricula trifenestrata Helf) Hartono .; Terry M. Frans; Josephus I. Kalangi
COCOS Vol. 7 No. 5 (2016)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i5.13765

Abstract

ABSTRACTTHE INFLUENCE OF SOME KIND OF FORESTRY FEED PLANTS TO THEQUALITY AND QUANTITY OF Cricula trifenestrata Helf COCOONSThe research aims to look at the influence of some types on liking of forestry plantsfeed (preference), life cycle, and the quantity and quality of gold silkworm cocoons C.Trifenestrata. This research was conducted from July to October 2015. Data collection wasperformed by the method of completely randomized design (CRD). Data collection wasperformed by completely randomized design (CRD) method.Specifically to see the effect on the quantity of cocoon, research using the completelyrandomized design (CRD) method. Observation is done by counting the number of larvae oneach type of feed. Data were analyzed to find the value of the average percentage for eachtype of feed.The results showed that avocado feed into the main host of C. trifenestrata forpreferred and easy to digest, and provide the best effect against the liking (preference) that is: 24.5%, while eating cinnamon lower than the avocado feed 22.2%, compared to eatingavocado and cinnamon Nantu feed have a lower preference level that is 19.2%, a lower levelcompared to eating avocado, cinnamon, Nantu feed, indicated by the cempaka feed that is17.7%, while feed with the lowest preference level is mahogany feed with 16.7%. TheAverage of long life cycle of insects that are kept on each type of feed as the host,respectively : Cempaka (61,7 days), Mahogany ( 55,9 days), Nantu (49,3 days), Avocado(72,3 days), dan Cinnamon (64,7 days). Avocado feed give the best effect on the quantity ofcocoons prodeced, that is: cocoons weight (95,56 g), heavy leather cocoons (13,9 g), andpercentage cocoons leather (27,07 g). Avocado feed give the best effect on the quality ofcocoon formed (shape and cocoons colour)Keyword : Liking research (preference), Cricula trifenestrata Helf, wood.
THE TENTH GRADERS’ PERCEPTION OF THE EFFECTIVENESS OF PROJECT-BASED LEARNING TO IMPROVE ENGLISH WRITING SKILL Ikfina Khoirun Nisa; Hartono .
Jurnal Ilmiah Penelitian Mahasiswa Vol 2, No 2 (2023): September 2023
Publisher : Jurnal Ilmiah Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The purpose of this study was to gather empirical data on how the 10th-grade students at SMA Islam Sultan Agung 01 Semarang felt about the effectiveness of project-based learning in enhancing their English writing abilities. This research is of the qualitative variety. The population of this study consisted of 10th-grade students who had taken classes using a project-based learning approach and an autonomous curriculum. Six students made up the sample in this study, including two high achievers, two average achievers, and two below average achievers. Interviews were the primary method of gathering data. The researcher looked about the school before the interview. Project-based learning is one of the approaches that students prefer, according to the research findings. The project-based learning approach is quite successful. Keywords: students’ perception, writing skill, project-based learning
THE TENTH GRADERS’ PERCEPTION OF THE EFFECTIVENESS OF PROJECT-BASED LEARNING TO IMPROVE ENGLISH WRITING SKILL Ikfina Khoirun Nisa; Hartono .
Jurnal Ilmiah Penelitian Mahasiswa Vol 2, No 2 (2023): September 2023
Publisher : Jurnal Ilmiah Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The purpose of this study was to gather empirical data on how the 10th-grade students at SMA Islam Sultan Agung 01 Semarang felt about the effectiveness of project-based learning in enhancing their English writing abilities. This research is of the qualitative variety. The population of this study consisted of 10th-grade students who had taken classes using a project-based learning approach and an autonomous curriculum. Six students made up the sample in this study, including two high achievers, two average achievers, and two below average achievers. Interviews were the primary method of gathering data. The researcher looked about the school before the interview. Project-based learning is one of the approaches that students prefer, according to the research findings. The project-based learning approach is quite successful. Keywords: students’ perception, writing skill, project-based learning
ANALISIS KEKONVERGENAN PADA BARISAN FUNGSI Restu Puji Setiyawan; Hartono .
Jurnal Kajian dan Terapan Matematika Vol 6, No 1 (2017): Jurnal Matematika
Publisher : Jurnal Kajian dan Terapan Matematika

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Abstract

Penelitian  analisis  kekonvergenan  pada bariasan  fungsi  ini  memiliki  dua  tujuan.  Pertama, mengindentifikasi  kekonvergenan  pada  barisan  fungsi.  Kedua,  menganailisis  sifat  dari  barisan  fungsi yang  konvergen. Ada  dua  jenis  kekonvergenan  pada  barisan  fungsi  yaitu  konvergen titik  demi  titik (pointwise) dan konvergen seragam. Terkait dengan jenis kekonvergenan dapat diturunkan beberapa sifatyang terkait dengan kekontinuan, integral, dan turunan. Pertama, limit dari barisan fungsi kontinu yang konvergen seragam merupakan fungsi kontinu. Kedua, limit dari barisan integral fungsi yang konvergen seragam pada interval tertutup memiliki nilai yang sama dengan integral dari limit barisan fungsi tersebut. Ketiga, misalkan  suatu barisan  fungsi konvergen  ke sedangkan barisan dari turunannya  merupakan barisan fungsi kontinu dan konvergen seragam ke , maka merupakan fungsi kontinu dan turunan sama dengan . Kata kunci: Barisan fungsi, konvergen, kekontinuan, integral, turunan
ANALISIS BIFURKASI PADA MODEL MATEMATIS PREDATOR PREY DENGAN DUA PREDATOR Lia Listyana; Hartono .; Kus Prihantoso Krisnawan
Jurnal Kajian dan Terapan Matematika Vol 5, No 6 (2016): Jurnal Matematika
Publisher : Jurnal Kajian dan Terapan Matematika

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Abstract

Penelitian ini bertujuan untuk menganalisis model matematis sistem  predator prey  dengan dua predator dan  mengetahui jenis  bifurkasi  sistem  tersebut  dengan  perubahan  laju  kematian  kedua jenis  predator. Model predator  prey  dengan  dua  predator  memiliki  lima  titik  ekuilibrium  yang  keberadaan  tiga  di  antaranya bergantung pada laju kematian kedua jenis  predator  dan titik ekuilibrium yang lain tidak bergantung pada laju kematian kedua jenis  predator. Kestabilan masing-masing titik ekuilibrium ditentukan berdasarkan nilai eigen masing-masing  titik  ekuilibrium.  Perubahan  kestabilan  masing-masing  titik  ekuilibrium  dan  perubahan banyaknya  titik  ekuilibrium  sebagai  penanda  terjadinya  bifurkasi.  Hasil  perhitungan  nilai  eigen  dan  analisis secara  numerik  menunjukkan  terjadinya  bifurkasi  pada  sistem  predator  prey  dengan  dua  predator  saat  laju kematian  predator  jenis I adalah         per satuan waktu dan laju kematian  predator  jenis II adalah        per satuan waktu.Kata kunci : sistem predator prey, sistem predator prey dengan dua predator, titik ekuilibrium, bifurkasi
ANALISIS DINAMIK DARI MODEL MATEMATIKA PADA PENJERNIHAN AIR YANG TERKONTAMINASI LOGAM BERAT DENGAN MENGGUNAKAN BAKTERI BACILLUS SUBTILIS Riris Eka Lestari; Hartono .; Kus Prihantoso Krisnawan
Jurnal Kajian dan Terapan Matematika Vol 5, No 6 (2016): Jurnal Matematika
Publisher : Jurnal Kajian dan Terapan Matematika

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Abstract

Penelitian  ini  bertujuan  untuk  membentuk  model  matematika  dari  penjernihan  air  yang terkontaminasi logam berat dan menganalisa kestabilan titik ekuilibrium dari sistem tersebut. Penjernihan air  dilakukan  dengan  menggunakan  bakteri  B.subtilis.  Tahapan  dalam  penelitian  ini  yaitu  membentuk model  predator-prey  dengan  fungsi  repon  tak  monoton,  mencari  titik  ekuilibrium,  menentukan  nilai  ????(tingkat kematian bakteri)  dan  ????  (tingkat pertambahan logam)  dan  menganalisis kestabilan di sekitar titik ekuilibrium.  Diperoleh  dua  model  matematika  yaitu  model  pipa  tertutup  dan  model  pipa  terbuka  yang merupakan pengembangan dari model  predator-prey    dengan fungsi respon tak monoton.  Hasil analisis menunjukkan  bahwa  model  pipa  tertutup  dengan  nilai  ???? = 9,  memiliki  tiga  titik  ekuilibrium  dengan semua titik ekuilibrium bernilai tidak stabil untuk semua nilai ????. Model pipa terbuka memiliki jumlah titik ekuilibrium yang berbeda-beda tergantung pada nilai  ????  dan  ????.  Pada model pipa terbuka  titik  ????1= (0,0)????stabil  saat nilai   ???? 0  dan   ???? 0,  ????2stabil  saat nilai  ???? 0  dan  0 ???? 0.202034  dan  ????3stabil  saat nilai ???? 0  dan  −0.202034 ≤ ???? 0.  Dengan  menggunakan  kriteria  Dulac,  diketahui  bahwa  sistem  tidak memiliki periodik orbit.Kata kunci:  Model  predator-prey, fungsi respon tak monoton, model  pipa tertutup,  model pipa terbuka, analisis kestabilan.
Co-Authors Agil Novianto - STIKES Nasional Surakarta Agus Supratama Bambang Sulistyo Dhiandra Dwi Hapsari Dian Nastiti Dwi Mahanani Erica Halim Evi . Hadi Sudrajad Harsini . Ikfina Khoirun Nisa Josephus I. Kalangi Kus Prihantoso Krisnawan Lia Listyana Mariska Sisillia Mochammad Imron Awalludin Nikenasih Binatari Prima Wijaya Projo Danoedoro Restu Puji Setiyawan Riris Eka Lestari Terry M. Frans Totok Gunawan Wulandari .