scholarly journals Distribusi spasial komunitas makrozoobentos di Sungai Cilalawi Kabupaten Purwakarta, Jawa Barat

DEPIK ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 164-172
Author(s):  
Hana Septiani Suminar ◽  
Zahidah Zahidah ◽  
Herman Hamdani ◽  
Asep Sahidin
Keyword(s):  
Aquatic Organisms ◽  
Disposal Site ◽  
Survey Method ◽  
Purposive Sampling ◽  
Community Activities ◽  
The Difference ◽  
Morisita Index ◽  
Physical And Chemical ◽  
The Impact ◽  
Index Of Diversity

Reservoir inlet. The Cilalawi River receives pollutant from households, as well as agriculture around the river. Utilization of the river as a waste disposal site is the impact of community activities on the environment that causes changes in environmental factors that will adversely affect the life of aquatic organisms. This research aims to map the spatial distribution of macrozoobenthos community along the Cilalawi River. This research was conducted from March-May 2019. The research method used a survey method by taking water and macrozoobenthos samples along the Cilalawi River. Data collection techniques using purposive sampling by setting 4 stations and four times sampling every two weeks. Based on the observation location, composition at station 1 consisted of 3 classes and 12 species of macrozoobenthos. The composition at station 2 consists of 3 classes and 10 species. Composition at station 3 consists of 3 classes and 16 species and composition at station 4 consists of 2 classes and 7 species. The difference in species deficit value at each station is different, this is influenced by physical and chemical parameters according to conditions around the aquatic environment. The index of diversity in the Cilalawi River ranges from 1,59 – 2,94 and the Uniformity Index of the Cilalawi River ranges from 0,2 to 0,9. The distribution pattern of makrozoobentos in the waters of the Cilalawi River based on the Morisita Index is uniform and grouped at station 1 to station 4 Keywords: Distribution, Makrozoobenthos, Cilalawi River, Jatiluhur, Pollutant ABSTRAKSungai Cilalawi merupakan salah satu anak Sungai Citarum yang menjadi inlet Waduk Jatiluhur. Sungai Cilalawi menerima buangan limbah yang berasal dari rumah tangga, serta pertanian yang berada di sekitar aliran sungai. Pemanfaatan Sungai untuk pembuangan limbah merupakan dampak dari aktivitas masyarakat terhadap lingkungan yang menyebabkan perubahan faktor lingkungan yang akan berakibat buruk bagi kehidupan organisme air. Riset ini bertujuan untuk memetakan distribusi spasial makrozoobentos di sepanjang aliran Sungai Cilalawi. Riset ini dilakukan dari bulan Maret –Mei 2019. Metode riset menggunakan metode survey yaitu dengan cara melakukan pengambilan sampel air dan sampel makrozoobentos di sepanjang Sungai Cilalawi. Teknik pengambilan data menggunakan purposive sampling dengan menetapkan 4 stasiun dan empat kali pengambilan sampling setiap dua minggu sekali. Berdasarkan lokasi pengamatan secara komposisi di stasiun 1 terdiri dari 3 kelas dan 12 spesies makrozoobentos. Komposisi di stasiun 2 terdiri dari 3 kelas dan 10 spesies. Komposisi di stasiun 3 terdiri dari 4 kelas dan 16 spesies dan komposisi di stasiun 4 terdiri dari 2 kelas dan 7 spesies. Perbedaan nilai spesies defisit pada masing – masing stasiun berbeda, hal ini dipengaruhi oleh parameter fisik dan kimiawi sesuai kondisi di sekitar lingkungan perairan tersebut. Indeks keanekaragaman di Sungai Cilalawi berkisar 1,59 – 2,94 dan Indeks Keseragaman berkisar 0,2 – 0,9. Pola distribusi makrozoobentos di perairan Sungai Cilalawi berdasarkan Indeks Morisita adalah seragam dan berkelompok di stasiun 1 hingga stasiun 4.Kata kunci: Distribusi, Makrozoobentos, Sungai Cilalawi, Jatiluhur, Bahan Pencemar 

scholarly journals Investigation on compatibility of PLA/PBAT blends modified by epoxy-terminated branched polymers through chemical micro-crosslinking

e-Polymers ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 39-54 ◽  
Author(s):  
Bo Wang ◽  
Yujuan Jin ◽  
Kai’er Kang ◽  
Nan Yang ◽  
Yunxuan Weng ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Glass Transition ◽  
Sem Analysis ◽  
Branched Polymers ◽  
Poly Lactic Acid ◽  
Elongation At Break ◽  
Butylene Terephthalate ◽  
The Difference ◽  
Physical And Chemical ◽  
The Impact

AbstractIn this study, a type of epoxy-terminated branched polymer (ETBP) was used as an interface compati- bilizer to modify the poly lactic acid (PLA)/poly(butylene adipate-co-butylene terephthalate) (PBAT) (70/30) blends. Upon addition of ETBP, the difference in glass transition temperature between PLA and PBAT became smaller. By adding 3.0 phr of ETBP, the elongation at break of the PLA/PBAT blends was found increased from 45.8% to 272.0%; the impact strength increased from 26.2 kJ·m−2 to 45.3 kJ·m−2. In SEM analysis, it was observed that the size of the dispersed PBAT particle decreased with the increasing of ETBP content. These results indicated that the compatibility between PLA and PBAT can be effectively enhanced by using ETBP as the modifier. The modification mechanism was discussed in detail. It proposes that both physical and chemical micro-crosslinking were formed, the latter of which was confirmed by gel content analysis.

scholarly journals KESESUAIAN TINGKAT PENCAHAYAAN GEDUNG SEKOLAH DASAR DAN PEMAHAMAN GURU TENTANG SISTEM PENCAHAYAAN SEKOLAH

2020 ◽  
Vol 1 (2) ◽  
pp. 1-7
Author(s):  
Erni Kurniati ◽  
Soeprijanto ◽  
Irzan Zakir
Keyword(s):  
Primary School ◽  
Energy Saving ◽  
Multiple Choice ◽  
Electrical Energy ◽  
Survey Method ◽  
Lighting System ◽  
Multiple Choice Questions ◽  
Purposive Sampling ◽  
Science Laboratories ◽  
The Impact

Abstract This research has the purpose to knowing the value of the lighting level in the room at primary school, is in conformity with applicable regulations or not and to knowing teacher’s knowledge and understanding level about the school lighting system. This research conducted in May until July 2016 at primary school in Kelurahan Rawamangun, East Jakarta. This research is quantitative descriptive with survey method. The sampling technique used in this research is random purposive sampling, where purposive that schools are not taken in a period of improvement and the respondent teachers are permanent teachers. Samples taken random with a degree of error of ± 10 %, so sample taken is 10 schools and 80 teachers. The results of this research is a translation percentage descriptive of the data suitability lighting levels at one to six classrooms, a teachers' room, library and science laboratories when sunny weather use the lights and do not use lights. And data of teacher’s understanding of school lighting system, which divided into five dimensions is healthy condition in classrooms, the lighting in the classrooms, electrical energy-saving concept of the school, the impact of lighting on health and health dan safety in the classroom as stated in 15 item multiple-choice questions. The results of this research stated that 10 schools have measured lighting levels can be concluded that the 0 % suitability rate of illumination for the one classroom, second classroom, third classroom, fourth classroom and science laboratories, 10 % suitability for the five classroom, six classroom dan teacher’s room when using the lights and do not use the lights. And suitability for the library is 11.1 % when not using lights and 12.5 % when using light. And from the research data of objective tests 15 item multiple-choice question for teacher's understanding can be concluded that the percentage of comprehension for the dimensions of healthy condition in classroom is 83.33 %, the dimensions of the lighting in the classroom is 40.416 % , the dimensions of the electrical energy-saving concept of the school is 92.5 % , dimensions of the impact of lighting on health is 68.75 % , and the dimensions of health and safety in the classroom is 49.58 % . There are several dimensions that are not understood by the teacher’s, because it need an advanced program for theacher’s follow-up to can better understand the kind of school lighting system. Abstrak Penelitian ini bertujuan untuk mengetahui nilai tingkat pencahayaan pada ruang-ruang sekolah dasar apakah sudah sesuai dengan ketentuan yang berlaku dan untuk mengetahui tingkat pemahaman guru mengenai sistem pencahayaan sekolah. Penelitian ini dilaksanakan pada bulan Mei sampai dengan bulan Juli 2016 di sekolah dasar di lingkungan kelurahan Rawamangun, Jakarta Timur. Penelitian ini merupakan penelitian kuntitatif deskriptif dengan menggunakan metode survei. Teknik pengambilan sampel yang digunakan dalam penelitian ini yaitu teknik acak dengan pertimbangan tertentu (random purposive sampling), dimana pertimbangannya yaitu sekolah yang diambil tidak dalam masa perbaikan dan responden guru-guru merupakan guru tetap. Sampel pada penelitian ini diambil secara acak (random) dengan taraf kesalahan penelitian ±10 %, sehingga jumlah sampel yang diambil yaitu sebanyak 10 sekolah dan 80 orang guru-guru Hasil penelitian ini berupa penjabaran secara persentase deskriptif mengenai data kesesuaian tingkat pencahayaan pada ruang kelas satu sampai enam, ruang guru, perpustakaan dan laboratorium IPA saat cuaca cerah menggunakan lampu dan tidak menggunakan lampu. Serta data pemahaman responden guru-guru tentang sistem pencahayaan sekolah yang terjabarkan dalam lima dimensi yaitu kondisi ruang belajar yang sehat, pencahayaan pada ruang belajar, konsep hemat energi listrik sekolah, dampak pencahayaan terhadap kesehatan dan kesehatan dan keselamatan kerja pada ruang belajar yang tertuang dalam 15 item pertanyaan pilihan ganda. Hasil penelitian ini menyatakan bahwa dari 10 sekolah yang diukur tingkat pencahayaan didapatkan kesimpulan bahwa 0% kesesuaian tingkat pencahayaan untuk ruang kelas satu, kelas dua, kelas tiga, kelas empat dan ruang laboratorium IPA, 10 % kesesuaian untuk ruang kelas lima, ruang kelas enam dan ruang guru baik saat menggunakan lampu dan tidak menggunakan lampu. Untuk ruang perpustakaan yaitu 11.1 % kesesuaiannya saat tidak menggunakan lampu dan 12.5 % kesesuaiannya saat menggunakan lampu. Dari data hasil penelitian tes objektif berbentuk pilihan ganda 15 item pertanyaan untuk pemahaman guru dapat ditarik kesimpulan bahwa persentase pemahaman untuk dimensi kondisi ruang belajar yang sehat yaitu 83.33%, dimensi pencahayaan pada ruang belajar yaitu 40.416%, dimensi konsep hemat energi listrik sekolah yaitu 92.5%, dimensi dampak pencahayaan terhadap kesehatan yaitu 68.75%, dan dimensi kesehatan dan keselamatan kerja pada ruang belajar yaitu 49.58%. Masih terdapat beberapa dimensi yang tidak dipahami oleh guru dengan baik oleh karena itu perlu diadakan sebuah program lanjutan agar guru-guru dapat lebih memahami sistem pencahayaan yang baik pada sekolah.

scholarly journals Efektivitas Social Media Marketing E-Commerce dalam Meningkatkan Brand Image Perusahaan (Survei Pada Pelanggan Tokopedia)

Prologia ◽  
2019 ◽  
Vol 3 (2) ◽  
pp. 505
Author(s):  
Defrianto Defrianto ◽  
Riris Loisa
Keyword(s):  
Social Media ◽  
Communication Theory ◽  
Brand Image ◽  
Social Media Marketing ◽  
Survey Method ◽  
Marketing Communication ◽  
Purposive Sampling ◽  
Image Dimension ◽  
The Social ◽  
The Impact

The research was done to determine the impact the of social media marketing will have on brand image Tokopedia. The research uses marketing communication theory, social media marketing, and brand image. Tokopedia is an e-commerce that offers a variety of products for its users starting with bill payment, electronics, beauty, automotive, and daily necessities. The approach used for this study is a quantitative approach with a survey method. The population in this study is the user of Tokopedia and the number of samples taken as much as 218 individuals and are using nonprobability sampling techniques with the purposive sampling approach. The data collected in this study is from a questionnaire. Based on the results of the research, it has been obtained that partial, there is an impact that social media marketing has had on the brand image Tokopedia. On the dimension of social media marketing, communication indicators are the highest indicator, and on the brand image dimension, brand benefit and competence indicators are the highest indicator. The relation that happened is only 28,3%. The rest of the 71,7% are affected by other factors outside the social media marketing activity.Penelitian ini dilakukan untuk mengetahui pengaruh social media marketing terhadap brand image Tokopedia. Penelitian ini menggunakan teori komunikasi pemasaran, social media marketing, dan brand image. Tokopedia merupakan e-commerce yang menawarkan berbagai macam produk-produk untuk penggunanya dimulai dari pembayaran tagihan, elektronik, kecantikan, otomotif, dan kebutuhan sehari-hari. Pendekatan yang digunakan untuk penelitian ini adalah pendekatan kuantitatif dengan metode survey. Populasi dalam penelitian ini adalah pengguna Tokopedia dan jumlah sampel yang diambil sebanyak 218 orang dan menggunakan teknik nonprobability sampling dengan pendekatan purposive sampling. Data yang dikumpulkan dalam penelitian ini dengan menggunakan kuisioner. Berdasarkan hasil penelitian, maka diperoleh hasil bahwa secara parsial, ada pengaruh social media marketing terhadap brand image Tokopedia. Pada dimensi social media marketing, indikator komunikasi merupakan indikator yang tertinggi, dan pada dimensi brand image, indikator brand benefit and competence merupakan indikator tertinggi. Hubungan yang terjadi hanya sebesar 28,3%. Sisanya 71,7% dipengaruhi oleh faktor lain diluar kegiatan social media marketing. 

scholarly journals Evaluation of Limnological Status of Jagadishpur Reservoir, Kapilvastu District, Nepal

2018 ◽  
Vol 6 (3) ◽  
pp. 255-260
Author(s):  
R.K. Chaudahary ◽  
A. Devkota
Keyword(s):  
Nitrogen Concentration ◽  
Water Reservoir ◽  
Aquatic Organisms ◽  
Decision Makers ◽  
Nutrient Concentrations ◽  
Reservoir Water ◽  
Central Nepal ◽  
Physical And Chemical ◽  
The Impact ◽  
Land Water

The aim of this research was to analyze physical and chemical characteristics of low altitude lake of Jagadishpur Reservoir, a Ramsar site in central Nepal lies about 197 m altitude. The reservoir water was studied for three seasons (rainy, winter and summer) to compare the changes in the parameters. Water quality in reservoir was found less favorable to aquatic organisms, with low pH and transparency, low dissolved oxygen (DO), and high nutrient concentrations (Nitrogen). The reservoir was found eutrophic in nature by nitrogen concentration and transparency criteria. The findings created a database for present status of low land water reservoir of Nepal, which can be used for the management of lakes as well as to study the impact on water quality.This study provided useful information for decision makers aimed to the conservation and sustainable management of the reservoir.Int. J. Appl. Sci. Biotechnol. Vol 6(3): 255-260

scholarly journals PERANAN PEMELIHARAAN TANAMAN MANGGIS TERHADAP PENDAPATAN PETANI DI JAWA BARAT

2016 ◽  
Vol 1 (2) ◽  
Author(s):  
Eti Suminartika
Keyword(s):  
Family Income ◽  
Foreign Market ◽  
Primary Data ◽  
Survey Method ◽  
Farm Income ◽  
Cultivation Method ◽  
The Family ◽  
Plant Maintenance ◽  
The Difference ◽  
The Impact

ABSTRAKPangsa pasar manggis masih terbuka lebar baik di dalam maupun di luar negeri, namun hanya 10persen manggis kita yang dapat diekspor, hal tersebut disebabkan oleh budidaya tanaman manggismasih sangat tradisional, jarang dipupuk, dibersihan dan dipangkas. Tujuan penelitian ini adalahmenganalisis pemeliharaan tanaman manggis, menganalisis perbedaan pendapatan usahatanimanggis dan menganalisis kontribusi pendapatan usahatani manggis terhadap pendapatan keluargapetani. Penelitian ini menggunakan data sekunder dan primer dengan menggunakan metoda survey.Selanjutnya data dianalisis dengan menggunakan analisis deskriptif, matematik dan ekonometrik.Penelitian dilaksanakan di sentra produksi manggis Jawa Barat yaitu di kabupaten Tasikmalaya danSubang. Hasil penelitian menunjukkan petani manggis di kabupaten Tasikmalaya lebih lebihmemelihara tanaman manggisnya dibandingkan di kabupaten Subang, meskipun demikianpemeliharaan tanaman di kedua kabupaten tersebut masih dibawah standar, dampaknya, pendapatandan keuntungan usahatani manggis di kabupaten Tasikmalaya lebih tinggi dibanding di kabupatenSubang dengan perbedaan yang signifikan secara statistik, oleh karenanya, pendapatan usahatanimanggis memiliki peranan yang besar terhadap pendapatan keluarga petani di kabupatenTasikmalaya.Kata kunci: manggis, pendapatan, keuntungan, pemeliharaan tanaman.ABSTRACTMarket share of mangosteen is still high both in the local and foreign market, but only 10 per cent ofIndonesian mangosteen can be exported. This is due to improper cultivation method such as rarelyfertilizing, weeding and other maintenance. Lack of maintenance of mangosteen farm can lowers thequality and productivity of trees. The purpose of this study was to analyse the maintenance ofmangosteen farm, the differences of mangosteen farm income and the contribution of mangosteenfarm income to the family income. This study used secondary and primary data which obtained fromfarmers, by using survey method. The data were analysed by using descriptive, mathematics andeconometrics analysis. Research was conducted in two of mangosteen production centres in WestJava, namely Tasikmalaya and Subang district. The results show that mangosteen farmers in theTasikmalaya is better at maintaining their garden than those in Subang, though the maintenance ofthe two districts are still below standard. The impact of the mangosteen farm income in Tasikmalayais higher than in Subang, the difference of income is statistically significant for both area. Therefore,mangosteen farm income has a major contribution on the family income, especially in Tasikmalaya.Keywords: mangosteen, farm income, plant maintenance.

scholarly journals The Impact of Brand Image, Product Quality, Price, and Promotion on Premium Plan Purchase Decisions on the Spotify Music Streaming App

FOCUS ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 1-11
Author(s):  
Suharyono Suharyono ◽  
Ajeng Suasti Astuti
Keyword(s):  
Product Quality ◽  
Structural Equation ◽  
Brand Image ◽  
Equation Modeling ◽  
Survey Method ◽  
Purchase Decisions ◽  
The Difference ◽  
Service Application ◽  
The Impact ◽  
Music Streaming

Digitalization in every industry continues to develop, which is also happened to the music industry. Music streaming applications are a technology that is in great demand today. Spotify is an on-demand music service application that is popular among music lovers. Spotify offers a free package and paid (premium) package services. The difference between the two service models lies in the quality and different service features. The purpose of this thesis is to analyze the influence of brand image, product quality, price, and promotion on premium package purchase decisions on the Spotify music streaming application. Research data obtained by survey method using a questionnaire. With a sample of 100 respondents. The analysis technique used is Structural Equation Modeling (SEM) using the AMOS 22 program. The results of this study showed that brand image, product quality, price, and promotion simultaneously have a positive effect on purchasing decision. Then brand image and product quality variables partially have a positive and significant effect on purchasing decisions, evidenced by the value of each CR is greater than 1.96 (CR> 1.96) and the significance value is smaller than 0.05 (P <0.05).

scholarly journals ANALISIS KONSENTRASI LOGAM BERAT TIMBAL (Pb) DAN KADMIUM (Cd) DI SUNGAI SILANDAK, SEMARANG Heavy Metal Lead (Pb) and Cadmium (Cd) Concentration Analysis in Silandak River, Semarang

2019 ◽  
Vol 8 (3) ◽  
pp. 257-264
Author(s):  
Nisrina Nurfitria Hanifah ◽  
Siti Rudiyanti ◽  
Churun Ain
Keyword(s):  
Heavy Metal ◽  
Government Regulation ◽  
Water Discharge ◽  
Strong Relationship ◽  
Quality Standards ◽  
Survey Method ◽  
Purposive Sampling ◽  
Central Java ◽  
The Difference ◽  
The Government

ABSTRAKSungai Silandak terletak di Kota Semarang, Jawa Tengah yang menerima limbah dari hasil kegiatan transportasi, industri dan domestik masyarakat sekitar. Limbah tersebut mengandung logam berat Timbal (Pb) dan Kadmium (Cd) yang mengalami perubahan konsentrasi disebabkan oleh berbagai faktor, salah satunya curah hujan. Curah hujan menyebabkan debit air menjadi lebih tinggi sehingga terjadi proses pengenceran konsentrasi pada badan perairan. Tujuan dari penelitian ini adalah untuk mengetahui konsentrasi Pb dan Cd yang kemudian dibandingkan dengan baku mutu lingkungan, perbedaan konsentrasi Pb dan Cd pada Bulan Oktober – Desember 2018 serta hubungan debit air dengan konsentrasi Pb dan Cd. Metode penelitian yang digunakan adalah metode survei dengan teknik sampling purposive sampling. Pengambilan sampel dilakukan empat kali (pada Oktober – Desember 2018) di lima stasiun. Hasil penelitian menunjukkan konsentrasi Pb = 0,03 – 0,003 mg/l dan Cd = 0,001 – 0,005 mg/l. Konsentrasi tersebut berada di bawah baku mutu lingkungan menurut PP No. 82 Tahun 2001 (Pb < 0,03 mg/l dan Cd < 0,01 mg/l) namun beberapa masih berada di atas baku mutu lingkungan menurut Kepmen LH No. 51 Tahun 2004 (Pb > 0,008 mg/l dan Cd > 0,001 mg/l). Terdapat perbedaan konsentrasi Pb dan Cd pada Bulan Oktober – Desember 2018, (Sig. < 0,05) Pb = 0,048 dan Cd = 0,037. Debit air dengan konsentrasi Pb dan Cd menunjukkan hubungan yang cukup erat, Pb (R = 0,576) dan Cd (R = 0,563).ABSTRAKSungai Silandak terletak di Kota Semarang, Jawa Tengah yang menerima limbah dari hasil kegiatan transportasi, industri dan domestik masyarakat sekitar. Limbah tersebut mengandung logam berat Timbal (Pb) dan Kadmium (Cd) yang mengalami perubahan konsentrasi disebabkan oleh berbagai faktor, salah satunya curah hujan. Curah hujan menyebabkan debit air menjadi lebih tinggi sehingga terjadi proses pengenceran konsentrasi pada badan perairan. Tujuan dari penelitian ini adalah untuk mengetahui konsentrasi Pb dan Cd yang kemudian dibandingkan dengan baku mutu lingkungan, perbedaan konsentrasi Pb dan Cd pada Bulan Oktober – Desember 2018 serta hubungan debit air dengan konsentrasi Pb dan Cd. Metode penelitian yang digunakan adalah metode survei dengan teknik sampling purposive sampling. Pengambilan sampel dilakukan empat kali (pada Oktober – Desember 2018) di lima stasiun. Hasil penelitian menunjukkan konsentrasi Pb = 0,03 – 0,003 mg/l dan Cd = 0,001 – 0,005 mg/l. Konsentrasi tersebut berada di bawah baku mutu lingkungan menurut PP No. 82 Tahun 2001 (Pb < 0,03 mg/l dan Cd < 0,01 mg/l) namun beberapa masih berada di atas baku mutu lingkungan menurut Kepmen LH No. 51 Tahun 2004 (Pb > 0,008 mg/l dan Cd > 0,001 mg/l). Terdapat perbedaan konsentrasi Pb dan Cd pada Bulan Oktober – Desember 2018, (Sig. < 0,05) Pb = 0,048 dan Cd = 0,037. Debit air dengan konsentrasi Pb dan Cd menunjukkan hubungan yang cukup erat, Pb (R = 0,576) dan Cd (R = 0,563).  ABSTRACTThe Silandak River is located in Semarang City, Central Java, that receives a lot of waste from the transportation, industrial, and local’s (domestic) activities. These waste contained the heavy metal Lead (Pb) and Cadmium (Cd), that concentration in waters caused by many factors, one of which is rainfall. Rainfall caused a rise in water discharge and causes a dilution of concentration in the waters. The purpose are to identify Pb and Cd concentration that will be compared with the quality of the environment, the difference of Pb and Cd concentration in October – December 2018, and also the correlation of water discharge with Pb and Cd concentration. The survey method was used in this study with purposive sampling for the sampling method. The sampling was done four times (in October – December 2018) at five stations. The result showed concentration of Pb = 0,03 – 0,003 mg/l and Cd = 0,001 – 0,005 mg/l. The concentration are below the quality standards according to The Government Regulation No. 82, Year 2001 (Pb < 0,03 mg/l and Cd < 0,01 mg/l), but some are still above the quality standards according to Minister of Environment Decree No. 51, Year 2004 (Pb > 0,008 mg/l dan Cd > 0,001 mg/l). There is a difference in the Pb and Cd concentration on October – December 2018, (Sig. < 0,05) Pb = 0,048 and Cd = 0,037. The water discharge and the concentration of Pb (R = 0,576) and Cd (R = 0,563) showed a quite strong relationship.

scholarly journals STRATEGI PENGEMBANGAN EKOWISATA DI KAWASAN KONSERVASI MANGROVE PANTAI KERTOMULYO, TRANGKIL, PATI Ecotourism Development Strategy for Mangrove Conservation Area of Kertomulyo Beach, Trangkil, Pati

2019 ◽  
Vol 8 (3) ◽  
pp. 169-176
Author(s):  
Amida Urfah Khoirun Nisa ◽  
Bambang Sulardiono ◽  
Djoko Suprapto
Keyword(s):  
Development Strategy ◽  
Swot Analysis ◽  
Sampling Technique ◽  
Survey Method ◽  
Regional Government ◽  
Conservation Area ◽  
Purposive Sampling ◽  
Educational Tourism ◽  
The Impact ◽  
Mangrove Conservation

ABSTRAKKawasan Konservasi Mangrove di Pantai Kertomulyo merupakan salah satu wisata alam di Kota Pati yang berpotensi untuk dikembangkan sebagai wisata edukasi. Tujuan penelitian ini untuk mengetahui potensi daya tarik pengunjung, persepsi, aspirasi, dan partisipasi pengunjung maupun masyarakat dalam pengembangan ekowisata. Penelitian ini dilakukan pada Januari 2019. Metode yang digunakan adalah survey dengan menggunakan kuesioner untuk pengunjung maupun masyarakat. Responden terdiri dari 25 masyarakat sekitar, 75 pengunjung, dan 1 ketua umum PORDAKWIS “Trisno Segoro” Desa Kertomulyo. Teknik pengambilan sampel untuk masyarakat dan pengelola ekowisata dengan purposive sampling, sedangkan untuk pengunjung dengan accidental sampling. Data dianalisis menggunakan analisis SWOT. Persepsi respoden mengenai daya tarik ekowisata, fasilitas, dan aksesibilitas tergolong baik. Partisipasi responden dalam menjaga lingkungan sekitar tergolong baik karena sebagian besar responden tidak setuju dengan adanya tindakan negatif terhadap kawasan ekowisata. Aspirasi responden yaitu pengoptimalan tentang sarana prasarana di kawasan ekowisata. Strategi pengembangan ekowisata yaitu pengembangan ekowisata dengan konsep pelestarian ekosistem serta melakukan koordinasi dengan Pemerintah Daerah; peningkatan pemberdayaan masyarakat sekitar dalam mengoptimalkan fasilitas kawasan ekowisata; menjaga ekosistem mangrove dengan cara mengefektifkan rehabilitasi dan penegakan peraturan perlindungan mangrove; serta meningkatkan fasilitas yang dapat digunakan untuk meminimalkan dampak dari abrasi. ABSTRACTThe Mangrove Conservation Area in the Kertomulyo Beach is one of the natural attractions in Pati which has the potential to be developed as an educational tourism destination. The purpose of this study is to determine the potential of visitor attraction, perceptions, aspirations, and participation of visitors and the community in developing ecotourism. This research was conducted in January 2019. The survey method is used by using a questionnaire for visitors and the community. The respondents consists of 25 surrounding communities, 75 visitors, and 1 the general chairman of PORDAKWIS "Trisno Segoro" Kertomulyo Village. The sampling technique for the community and ecotourism caretaker is purposive sampling, and the sampling technique for visitors is accidental sampling. The data is analyzed using SWOT analysis. The respondents’ perception of the attractiveness of ecotourism, facilities and accessibility is good. The participation of respondents in maintaining the surrounding environment is relatively good because most respondents do not agree with the negative actions towards the ecotourism area. The aspirations of respondents are the optimization of infrastructure in ecotourism areas. The ecotourism development strategy are developing ecotourism with the concept of ecosystem preservation and coordination with the Regional Government, increasing the empowerment of the communities in optimizing ecotourism facilities, safeguarding mangrove ecosystems by doing effective rehabilitation and enforcement of mangrove protection regulations, and improving facilities that can be used to minimize the impact of abrasion.

scholarly journals Evaluating the Impact of Building Information Modeling (BIM) on Mass House Building Projects

Buildings ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 35 ◽  
Author(s):  
Hadi Sarvari ◽  
Daniel W. M. Chan ◽  
Mansooreh Rakhshanifar ◽  
Nerija Banaitiene ◽  
Audrius Banaitis
Keyword(s):  
Building Information Modeling ◽  
Great Influence ◽  
Information Modeling ◽  
Survey Method ◽  
Building Projects ◽  
Factors Affecting ◽  
Building Information ◽  
The Difference ◽  
The Impact ◽  
Whole Life Cycle

This paper aims to identify and investigate the factors affecting the goals of mass-housing building projects due to the use of building information modeling (BIM). A descriptive-survey method was used to collect necessary data. Fifty respondents from the target sectors and experts in the field of modeling building information participated in self-selection survey. The tools of collecting data included three questionnaires regarding three phases of construction work: pre-construction, during construction and post-construction, which were developed based on the three indices of cost, time and quality. The face, content and construct validity of the questionnaires were confirmed after several rounds of testing. The reliability coefficient of the pre-construction, during the construction and post-construction questionnaires were 0.923, 0.917 and 0.876, respectively. The results show that the F-statistic is significant for the difference between the three groups (pre-construction, during construction and post-construction) at the 0.01 level. The results confirmed that BIM has a great influence on a project in terms of meeting time, cost and quality objectives through the whole life cycle of a construction project: during pre-construction, construction, and post-construction stages.

POLA INTERAKSI SOSIAL SISWA PENGGUNA GADGET DI SEKOLAH DASAR KOTA YOGYAKARTA

2021 ◽  
Vol 12 (2) ◽  
pp. 305-319
Author(s):  
Ivan Stevanus ◽  
Lusila Parida
Keyword(s):  
Elementary School ◽  
Social Interaction ◽  
Elementary School Students ◽  
Survey Method ◽  
Interaction Patterns ◽  
School Students ◽  
Purposive Sampling ◽  
Technological Advances ◽  
The Impact ◽  
The City

ABSTRAKPenelitian ini bertujuan memberikan bukti empiris terkait pola interaksi sosial antar siswa, dan memaparkan gambaran terkait dampak pemanfaatan gadget dikalangan siswa sekolah dasar kota Yogyakarta. Penelitian ini menggunakan metode survei, dengan teknik pengumpulan data melalui angket. Populasi dan sampel penelitian diambil secara purposive sampling yaitu siswa kelas II dan Kelas V dari empat sekolah dasar swasta dan negeri di kota Yogyakarta dengan tingkat perbedaan predikat akreditasi sekolah. Hasil penelitian menunjukan bahwa ada dua gambaran yang dominan dari pola interaksi sosial siswa sekolah dasar dalam memanfaatkan gadget yakni pola asosiatif dan disasosiatif. Kehadiran dan berkembangnya gadget sangat positif membantu siswa dalam kegiatan belajar, dan dipihak lain gadget juga mereduksi pola interaksi sosial dan personal dikalangan siswa. Untuk menghidupkan pola interaksi sosial siswa dengan adanya gadget maka sekolah perlu membuat pendekatan pembelajaran yang edukatif adaptif dalam memanfaatkan kemajuan teknologi sebagai instrumen kunci keberhasilan pembelajaran abad 21.Kata Kunci: gadget,  interaksi sosial, pola asosiatif dan disasosiatif ABSTRACTThis study aims to provide empirical evidence regarding patterns of social interaction between students, and to describe the impact of using gadgets among elementary school students in the city of Yogyakarta. This study uses a survey method, with data collection techniques through questionnaires. The population and sample of the study were taken by purposive sampling, namely class II and class V students from four private and public elementary schools in the city of Yogyakarta with different levels of school accreditation predicate. The results showed that there were two dominant images of the social interaction patterns of elementary school students in using gadgets, namely associative and dissociative patterns. The presence and development of gadgets is very positive in helping students in learning activities, and on the other hand gadgets also reduce social and personal interaction patterns among students. To turn on students' social interaction patterns with gadgets, schools need to make an adaptive educative learning approach in utilizing technological advances as a key instrument for the success of 21st century learning.Keywords: gadgets, social interaction, associative and dissociative patterns

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