bluuebunny/crossref_metadata_2025_split huggingface dataset:
STATUS SEDIMEN SUNGAI BREMI KABUPATEN PEKALONGAN DITINJAU DARI ASPEK KIMIA DAN BIOLOGI
Authors: Istiqomah Nurbaity , Purwanti Frida , Haeruddin - 
Published: September 2020

Sepanjang aliran Sungai Bremi, terdapat banyak industri batik rumahan yang membuang limbah ke sungai sehingga Sungai Bremi tersebut mengalami penurunan kualitas perairan. Bahan pencemar yang masuk ke dalam perairan tersebut akan terakumulasi dalam sedimen, khususnya logam berat seperti kromium dan fenol. Masuknya bahan pencemar ke dalam sedimen dapat mempengaruhi organisme yang tinggal dalam sedimen. Penelitian ini bertujuan untuk mengetahui konsentrasi kromium, fenol, tekstur sedimen, struktur komunitas makrobentos, pola hubungan antara konsentrasi kromium dan fenol dengan struktur komunitas (keanekaragaman dan kelimpahan) makrobentos di Sungai Bremi, dan status sedimen Sungai Bremi ditinjau dari konsentrasi kromium, fenol, dan struktur komunitas makrobentos. Penelitian ini dilakukan pada bulan Mei-Juni 2013 di tiga stasiun. Alat dan bahan yang digunakan dalam penelitian ini adalah sampel sedimen sungai dan sampel makrobentos. Ekman Grab digunakan untuk mengambil sampel Rose bengole digunakan untuk memberi warna pada sampel makrobentos dan formalin 4% untuk mengawetkan sampel makrobentos. Teknik pengambilan sampel menggunakan metode purposive sampling di 3 stasiun secara komposit, kemudian substrat disaring menggunakan saringan yang bermesh size 0,5 mm. Material-material yang tertinggal kemudian dimasukkan kedalam botol sampel, setelah itu diberi formalin 4 % dan 1-2 tetes rose bengole. Hasil pengamatan menunjukkan bahwa konsentrasi kromium berkisar 3,395-8,768 ppm, fenol antara 0,035-0,0623 ppm, dan fraksi sedimen dari ketiga stasiun tersebut adalah lanau berpasir. Makrobentos hanya ditemukan di stasiun I yang terdiri atas 4 spesies yakni Chironomus sp, Lymnea sp, Nereis sp, dan Tubifex sp dengan kelimpahan sebesar 1270 ind/m3. Nilai indeks keanekaragamannya 0,687, indeks keseragamannya 0,49, dan indeks dominasinya 0,66. Nilai koefisien korelasi (r) antara konsentrasi kromium, fenol dengan struktur komunitas berkisar 0,617-0,797. Nilai tersebut menunjukkan bahwa adanya hubungan kuat antara konsentrasi kromium, fenol dengan struktur komunitas makrobentos memiliki korelasi yang kuat. Hasil konsentrasi kromium, fenol dibandingkan dengan kriteria atau baku mutu sedimen menunjukkan bahwa sedimen Sungai Bremi dalam keadaan tercemar.
DISTRIBUSI DAN KANDUNGAN KARBON PADA LAMUN (Enhalus acoroides) DI PULAU KEMUJAN TAMAN NASIONAL KARIMUNJAWA BERDASARKAN CITRA SATELIT
Authors: Zulfikar Alfian , Hartoko Agus , Hendrarto Boedi 
Published: September 2020

ABSTRAKPadang lamun merupakan salah satu ekosistem yang sangat penting di wilayah pesisir. Salah satu fungsi dari lamun yaitu sebagai penyerap karbon. Adanya berbagai kegiatan yang dilakukan oleh masyarakat di Pulau Kemujan dikhawatirkan dapat mengganggu fungsi lamun tersebut. Lamun tersebar sepanjang pantai sebelah barat Pulau Kemujan sehingga penggunaan teknologi penginderaan jauh diharapkan dapat membantu dalam penelitian ini. Tujuan dari penelitian ini yaitu mengetahui pengaruh dari kegiatan manusia terhadap fungsi lamun sebagai penyerap karbon dengan cara membangun pemodelan algoritma berdasarkan citra satelit Aster. Adapun pengambilan sampel dilakukan secara purposive sampling. Analisis kandungan karbon pada lamun menggunakan metode Walkley & Black. Hasil kandungan karbon tertinggi terdapat pada rhizome berkisar antara 12,498 – 55.967 g C/m2 sedangkan akar berkisar antara 0,475 – 27,147 g C/m2 dan daun berkisar antara 4,374 – 30,346 g C/m2. Hasil penelitian menyimpulkan bahwa distribusi biomassa dan kandungan karbon lamun (Enhalus acoroides) di Pulau Kemujan Taman Nasional Karimunjawa menyebar tidak merata, hal tersebut menunjukkan adanya pengaruh dari kegiatan manusia terhadap fungsi lamun sebagai penyerap karbon. Kata kunci: Lamun, Kandungan karbon, Pulau Kemujan Taman Nasional Karimunjawa ABSTRACTSeagrass beds are one of the very important ecosystems in coastal areas. One function of seagrass is carbon sinks. Activities in Kemujan island was suspected to interfere function of seagrass. Seagrass was found along the west of Kemujan island, so that using of remote sensing technology can help in this research. The aimed of this research was to determine the influence of human activities on the functioning of seagrass as a carbon sink by building modeling algorithm based on Aster satellite. Sampling teqhnique was purposive sampling. Analysis of carbon biomass in seagrass using Walkley & Black method. The results of the highest carbon biomass was found in the rhizome ranged from 12.498 to 55,967 g C /m2 while the roots ranged from 0.475 to 27.147 g C /m2 and leaves ranged from 4.374 to 30.346 g C /m2. This research, concluded that the distribution of biomass and carbon biomass of seagrass (Enhalus acoroides) in Kemujan Island Karimunjawa National Park spread unevenly, it showed the influence of human activities on seagrass function as carbon sinks. Keywords: Seagrass, carbon biomass, Kemujan Island Karimunjawa National Park.
KELAYAKAN WISATA ALAM DI MAROON MANGROVE EDU PARK SEMARANG
Authors: Tarigan Novia Putri , Purwanti Frida , Hendrarto Boedi 
Published: September 2020

ABSTRAK Wisata alam mangrove merupakan salah satu kegiatan yang dapat mendukung konservasi mangrove. Setiap kawasan wisata perlu kajian kelayakan perencanaan pengembangannya. Penelitian lapangan dilaksanakan pada bulan Februari 2017 dengan metode deskriptif. Tujuan utama penelitian untuk menganalisis kelayakan MMEP Semarang sebagai destinasi wisata alam, dengan tujuan antara untuk mengidentifikasi profil dan persepsi pengunjung tentang potensi mangrove dan kelayakan MMEP. Pengumpulan data dilakukan dengan teknik wawancara berdasarkan kuesioner terhadap 50 pengunjung, 6 pengelola dan 4 orang pembina kawasan MMEP Semarang. Observasi dilakukan untuk mengamati biofisik mangrove. Wawancara untuk melihat persepsi berdasarkan hasil pengisian kuisoner dengan 4 skala rating. Penilaian kelayakan dihitung berdasarkan parameter potensi ekologis/biofisik, aksesibilitas, dan fasilitas. Hasil penelitian menunjukkan profil pengunjung didominasi kalangan muda usia 20-25 tahun berasal dari Semarang. Persepsi pengunjung sebagian besar menyatakan MMEP layak untuk dikembangkan. Kelayakan wisata di MMEP masuk dalam kategori S2 (layak) dengan nilai 73,65%. Kata Kunci: Wisata Alam; Kelayakan; Potensi Ekologis; Aksesibilitas; Fasilitas; Maroon Mangrove Edu Park ABSTRACT Nature tourism mangrove is one of the activities that can support conservation of mangroves. Each tourist area needs a feasibility study for it’s development planning. The field research was conducted in February 2017 with descriptive method. The main objective of the study was to analyze the feasibility of MMEP Semarang as a natural tourist destination, with the aims of identifying visitor profiles and it’s perceptions. The data were collected by interviewing 50 respondens, 6 management staff and 4 consellor of MMEP Semarang. Observations were made to observe the biophysical mangroves. Interview to see perception based on questionnaires result with 4 rating scales. The feasibility assessment is calculated based on parameter of ecological / biophysical potential, accessibility, and facilities. The result of the multiplication of scores and respondents determines the feasibility grade. The research showed that profile of the visitors dominated by young people aged 20-25 years come from Semarang. Perception of most visitors stated that MMEP is feasible to be developed. The MMEP tourism feasibility categories in S2 (feasible) with value 73,65%. Keywords: Nature Tourism; Feasibility; Ecological Potential; Accessibility; Facilities; Maroon Mangrove Edu Park
ANALISIS KERENTANAN PANTAI MENGGUNAKAN COASTAL VULNERABILITY INDEX (CVI) DI WILAYAH PESISIR TANJUNG PANDAN, KABUPATEN BELITUNG
Authors: Rachmadianti Anditya Devi , Purwanti Frida , Latifah Nurul 
Published: September 2020

Wilayah pesisir Tanjung Pandan terdiri atas Kelurahan Air Saga, Tanjung Pendam dan Kampung Parit dan merupakan pusat ibukota Pulau Belitung. Tingginya kegiatan perikanan dan aktivitas manusia di wilayah ini menyebabkan perlunya kajian mengenai analisis kerentanan pantai guna melakukan upaya pencegahan kerusakan pantai dan pengelolaan wilayah pantai secara berkelanjutan. Tujuan dari penelitian ini adalah untuk mengetahui tingkat kerentanan dan lokasi kerentanan pantai yang paling tinggi serta variabel yang paling berpengaruh terhadap kerentanan pantai. Penelitian ini dilaksanakan pada bulan Mei 2018 dengan menganalisis variabel geomorfologi, erosi/akresi, kemiringan pantai, jarak tumbuhan dari pantai, pasang surut dan tinggi gelombang sesuai dengan indeks kerentanan pantai. Metode pengambilan data lapangan dilakukan melalui pengamatan secara langsung dengan pembagian sel pantai sebanyak 7 sel serta berdasarkan data sekunder. Hasil penelitian menunjukkan bahwa nilai CVI sel pantai 1-5 dan 7 tergolong kategori kerentanan rendah dengan nilai CVI berkisar antara 14,43 – 20,41, sedangkan sel pantai 6 tergolong kategori kerentanan menengah dengan nilai CVI 22,82. Lokasi kerentanan paling tinggi berada pada sel pantai 6 dengan kondisi geomorfologi pantai pasir serta paling dipengaruhi oleh variabel perubahan garis pantai akibat terjadinya peristiwa erosi. Tanjung Pandan Coastal Area consists of Air Saga, Pendam Cape and Kampung Parit region that are the centre of Belitung Island. The high activity of human and fisheries in the area cause the coastal vulnerability that need to be examined to prevent coastal damage and to manage the coastal area in a sustainable way. This study was conducted in May 2018 by analyzing geomorphology, shoreline erosion/accretion, coastal slope, plants distance from the coast, mean tide range and mean wave height based on coastal vulnerability index within direct observation at seven coastal cells and based on secondary data. The research showed that the CVI value on the 1st – 5th cells and the 7th cell categorized at low level with a range between 14,43 – 20,41, while the 6th cell categorized at medium level with the CVI value 22,82. The highest vulnerability located on the 6th cell with a sandy beach geomorphology and most affected by coastline changes variable due to the occurrence of erosion.
ANALISIS KESESUAIAN WISATA PANTAI BONDO DI KABUPETEN JEPARAJAWA TENGAH
Authors: Vera Grecya Christa , Suprapto Djoko , Purwanti Frida 
Published: September 2020

Pantai Bondo merupakan salah satu objek wisata pantai yang terdapat di Kabupaten Jepara yang menawarkan keindahan pantai dengan pasir putih. Karakteristik Pantai Bondo perlu dianalisis untuk pengembangan wisata pantai. Tujuan penelitian ini untuk mengetahui karakteristik masyarakat dan pengunjung, persepsi responden tentang potensi wisata, dan nilai Indeks Kesesuaian Wisata (IKW) Pantai Bondo. Penelitian dilakukan pada bulan Maret-April 2018 di Pantai Bondo, Kabupaten Jepara. Metode yang digunakan pada penelitian ini adalah metode kualitatif dengan menyebar kuesioner kepada 30 responden masyarakat dengan penentuan responden menggunakan teknik purposive sampling dan 30 responden pengunjung dengan penentuan responden menggunakan teknik accidental sampling serta metode penelitian kuantitatif menggunakan Indeks Kesesuaian Wisata (IKW) yang terdiri dari 3 stasiun. Responden pada umumnya berusia dewasa dengan tingkat pendidikan SMP-SMA. Pengunjung mendapatkan informasi secara lisan, sudah datang lebih dari dua kali dengan tujuan rekreasi atau berlibur dengan temannya serta pengunjung memiliki kepuasan dalam berwisata sehingga memiliki keinginan untuk kembali berkunjung. Persepsi responden untuk potensi, daya tarik, dan fasilitas memberikan penilaian yang baik, sedangkan untuk aksesibilitas dan kepedulian lingkungan mendapat penilaian cukup baik dari responden. Nilai Kesesuaian Pantai Bondo untuk ketiga stasiun termasuk dalam kategori S1 atau sangat sesuai untuk wisata pantai dengan rata-rata persentase 92,4%. Bondo Beach is one the beach tourism object in the Jepara Regency that offers beauty of the white sandy beach. Characteristics of the Bondo Beach needs to be analyzed for coastal tourism development. The purpose of this research were to know the characteristic of community and visitor, respondent’s perception about potency, and value of Tourism Suitability Index of the Bondo Beach. The study was conducted in March-April 2018 at Bondo Beach, Jepara Regency. The method used in this research was qualitative method by spreading questionnaires to 30 respondents using purposive sampling technique and 30 respondents using accidental sampling and quantitative research method using Tourism Suitability Index consisting of 3 stations. Respondents are generally adults with Junior High School until Senior High School education. Visitors get information orally, have come more than twice with purpose a recreation or holiday, come with friends and visitors have satisfy in the tour so have desire to return. Respondents' perceptions of potential, attractiveness, and facilities provide good judgment, while for accessibility and environmental awareness is considered good enough from respondents. The Bondo Beach Suitability Value for the three stations is included in the S1 or is particularly suitable for coastal tourism with an average percentage of 92,4%.
LAJU SEDIMENTASI PERAIRAN SUNGAI SILANDAK, SEMARANG BARAT Sedimentation Rate of Silandak River, West Semarang
Authors: Dominig Amryta , Muskananfola Max Rudolf , A’in Churun 
Published: September 2020

ABSTRAK Sungai Silandak merupakan salah satu sungai yang bermuara di Perairan Teluk Semarang bagian tengah berada di kawasan industri, memiliki fungsi sebagai sistem drainase Kota Semarang. Tujuan dari penelitian ini adalah untuk mengetahui laju sedimentasi, hubungan laju sedimentasi dengan kecepatan arus dan mengetahui komposisi sedimentasi melalui hasil analisis fraksi sedimen di perairan Sungai Banjir Kanal Barat dan Silandak. Penelitian ini dilaksanakan pada tanggal 17 Oktober – 1 November 2018 di Sungai Silandak. Metode yang digunakan dalam penelitian ini menggunakan metode kuantitatif. Pengambilan sampel menggunakan metode purposive sampling, dilakukan 2 (dua) kali pengambilan sampel dengan selang 14 hari. Data yang dianalisis adalah debit sungai, Total Suspended Solid (TSS), laju sedimentasi, dan fraksi sedimen. Laju sedimentasi Sungai Silandak 0,08-55,81 ton/hari dan fraksi sedimen di dominasi pasir dan liat. Hasil Penelitian dari hulu menuju hilir menunjukkan sedimentasi semakin meningkat dan fraksi butir sedimen halus juga semakin meningkat. ABSTRACT Silandak river is one of the rivers in the industrial area that flow into central of Semaran, it has a function as the drainage system of Semarang city. The purpose of the study was to determine the sedimentation rate and composition, relationship between the sedimentation rate and current velocity and sediment composition based on analysis of sediment fraction. The study was conducted from 17 October-1 November 2018 at the Silandak River. The method using quantitative methods. Sampling using a purposive sampling with two replicate and sampling interval of 14 days. The analyzed data were the total river discharge, Total Suspended Solid (TSS), sedimentation rate and fractions. Silandak river sedimentation rate from 0.08-55.81 tons/day and the dominant fraction of the sediment are sand and clay. Results showed that sedimentation rate and clay increased from the upstream to downstream.
VALUASI EKONOMI OBJEK WISATA PANTAI WEDIOMBO KABUPATEN GUNUNGKIDUL YOGYAKARTA DENGAN PENDEKATAN TRAVEL COST Economic Valuation of Tourism Destination of Wediombo Beach Gunungkidul Regency Yogyakarta with Travel Cost Approach
Authors: Panjaitan Theresia , Saputra Suradi Wijaya , Rudiyanti Siti 
Published: September 2020

ABSTRAKPantai Wediombo terletak di Desa Jepitu, Kecamatan Girisubo, Kabupaten Gunungkidul. Pantai Wediombo merupakan salah satu ekosistem perairan yang memiliki daya tarik untuk dapat dijadikan objek wisata. Manfaat yang diberikan oleh pantai Wediombo belum terukur secara ekonomi sehingga penting untuk dilakukan studi tentang besarnya nilai ekonomi kawasan wisata. Tujuan dari penelitian ini yaitu untuk mengetahui potensi dan nilai ekonomi Pantai Wediombso. Penelitian dilaksanakan pada bulan Maret 2019 di Pantai Wediombo. Penelitian menggunakan metode deskriptif. Pengumpulan data diperoleh melalui wawancara kepada 100 wisatawan dan 1 pengelola wisata menggunakan kuisioner dengan teknik sampling accidental sampling. Analisis valuasi ekonomi wisata menggunakan pendekatan Travel Cost Method. Potensi yang dimiliki oleh Pantai Wediombo mencakup keindahan dan kondisi daya tarik pantai termasuk dalam kategori sangat baik, sarana dan prasarana yang sudah memadai, pelayanan pengelola yang cukup baik serta potensi budaya masyarakat seperti Upacara Ngalangi. Nilai ekonomi Pantai Wediombo sebesar Rp.52.787.622.096,00/tahun dengan rata-rata biaya perjalanan individu sebesar Rp. 208.296,00/kunjungan. ABSTRACTWediombo Beach located in Jepitu Village, Girisubo District, Gunungkidul Regency. Wediombo Beach is one of the aquatic ecosystems which has attraction that can be a good tourist destination. The benefits from Wediombo Beach were not yet measure in economic terms and it is important to study the magnitude of the economic value of tourist areas. The purpose of this research is to find out the potential and economic value of the beach. The research held on March at Wediombo Beach. The study used descriptive methods. Data obtained through interviews with 100 tourists and 1 tourism manager using questionnaires with accidental sampling. Analysis of tourism economic valuation using Travel Cost Method approach. The potential of Wediombo Beach including the beauty and conditions of coastal appeal is in a very good category, adequate facilities and infrastructure, good management services and potential cultural communities such as the Ngalangi ceremony. The economic value of Wediombo Beach based on tourist travel cost is about Rp.52.787.622.096.00 / year and average individual travel cost about Rp.208.296 / visit.
The relationship between mobile learning and self-regulated learning: A systematic review
Authors: Palalas Agnieszka , Wark Norine 
Published: September 2020

A systematic review of 38 primary research peer-reviewed articles, drawn from six databases and spanning from January 2007 to January 2019, was conducted to determine the principle information that they collectively offered on the relationship between mobile learning (m-learning) and self-regulated learning (SRL). In answering the research questions posed, a synthesis of the following 12 key elements was undertaken: (1) research aims, (2) research methodologies, (3) outcomes, (4) education discipline areas, (5) educational levels, (6) educational contexts, (7) geographic location, (8) time frame, (9) type of device, (10) m-learning and SRL definitions, (11) theoretical models, and (12) m-learning, self-regulation (SR), and SRL variable measurement instruments. The frequency of studies on the relationship between m-learning and SRL increased in more recent years, as did the types of devices used in these studies. More than three quarters of the studies concluded that m-learning enhanced SRL, SRL enhanced m-learning, or m-learning and SRL enhanced other learning factors (e.g., health, curriculum development). Moreover, the relationship between m-learning and SRL was dynamic and complex. A primary recommendation was to intentionally integrate m-learning and SRL into formal curricula guided by informed, technologically adept educators who provided appropriate, ever-decreasing support and scaffolding as learners became more self-determined.

Implications for practice or policy:

M-learning research and practice should be founded upon relevant theory and validated definitions of m-learning that consider ever-advancing technologies and related pedagogies that include participatory activities.
M-learning designers should ensure that mobile technologies are used intentionally and selectively, guided by clearly defined learning objectives, and integrated into the curriculum by technologically adept educators who provide appropriate, ever-decreasing support and scaffolding as learners become more self-determined.
When designing m-learning, educators should consider digital safety and privacy issues.
Robust controller for cancer chemotherapy dosage using nonlinear kernel-based error function
Authors: Mohite Utkarsha L. , Patel Hirenkumar G. 
Published: September 2020

Abstract
It is well-known that chemotherapy is the most significant method on curing the most death-causing disease like cancer. These days, the use of controller-based approach for finding the optimal rate of drug injection throughout the treatment has increased a lot. Under these circumstances, this paper establishes a novel robust controller that influences the drug dosage along with parameter estimation. A new nonlinear error function-based extended Kalman filter (EKF) with improved scaling factor (NEF-EKF-ISF) is introduced in this research work. In fact, in the traditional schemes, the error is computed using the conventional difference function and it is deployed for the updating process of EKF. In our previous work, it has been converted to the nonlinear error function. Here, the updating process is based on the prior error function, though scaled to a nonlinear environment. In addition, a scaling factor is introduced here, which considers the historical error improvement, for the updating process. Finally, the performance of the proposed controller is evaluated over other traditional approaches, which implies the appropriate impact of drug dosage injection on normal, immune and tumor cells. Moreover, it is observed that the proposed NEF-EKF-ISF has the ability to evaluate the tumor cells with a better accuracy rate.
The Effects of a Parenting Program on Maternal Well-Being: Evidence from a Randomized Controlled Trial
Authors: Camehl Georg F. , Spiess Christa Katharina , Hahlweg Kurt 
Published: September 2020

AbstractThis paper evaluates how a light-touch parenting program for parents of children below school entry age affects maternal family well-being. We analyze data from a randomized controlled trial focusing on non-disadvantaged parents. Overall, results show no short-term effects but a relatively large positive effect of the intervention on maternal family well-being in the medium term. With a 20- to 30-percent standard deviation, the effects appearing three years after treatment are relatively large. Mechanisms such as improvements in child behavior are further explored.